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cve-2024-38477/httpd-2.4.59/server/core.c
gbucchino 86ef235216 First commit
2025-06-05 15:09:30 +02:00

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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_lib.h"
#include "apr_fnmatch.h"
#include "apr_hash.h"
#include "apr_thread_proc.h" /* for RLIMIT stuff */
#include "apr_random.h"
#include "apr_version.h"
#if APR_MAJOR_VERSION < 2
#include "apu_version.h"
#endif
#define APR_WANT_IOVEC
#define APR_WANT_STRFUNC
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_protocol.h" /* For index_of_response(). Grump. */
#include "http_request.h"
#include "http_ssl.h"
#include "http_vhost.h"
#include "http_main.h" /* For the default_handler below... */
#include "http_log.h"
#include "util_md5.h"
#include "http_connection.h"
#include "apr_buckets.h"
#include "util_filter.h"
#include "util_ebcdic.h"
#include "util_mutex.h"
#include "util_time.h"
#include "mpm_common.h"
#include "scoreboard.h"
#include "mod_core.h"
#include "mod_proxy.h"
#include "ap_listen.h"
#include "ap_regex.h"
#include "mod_so.h" /* for ap_find_loaded_module_symbol */
#if defined(RLIMIT_CPU) || defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS) || defined (RLIMIT_NPROC)
#include "unixd.h"
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
/* LimitRequestBody handling */
#define AP_LIMIT_REQ_BODY_UNSET ((apr_off_t) -1)
#define AP_DEFAULT_LIMIT_REQ_BODY ((apr_off_t) 1<<30) /* 1GB */
/* LimitXMLRequestBody handling */
#define AP_LIMIT_UNSET ((long) -1)
#define AP_DEFAULT_LIMIT_XML_BODY ((apr_size_t)1000000)
/* Hard limit for ap_escape_html2() */
#define AP_MAX_LIMIT_XML_BODY ((apr_size_t)(APR_SIZE_MAX / 6 - 1))
#define AP_MIN_SENDFILE_BYTES (256)
/* maximum include nesting level */
#ifndef AP_MAX_INCLUDE_DEPTH
#define AP_MAX_INCLUDE_DEPTH (128)
#endif
/* valid in core-conf, but not in runtime r->used_path_info */
#define AP_ACCEPT_PATHINFO_UNSET 3
#define AP_CONTENT_MD5_OFF 0
#define AP_CONTENT_MD5_ON 1
#define AP_CONTENT_MD5_UNSET 2
#define AP_FLUSH_MAX_THRESHOLD 65535
#define AP_FLUSH_MAX_PIPELINED 4
APR_HOOK_STRUCT(
APR_HOOK_LINK(get_mgmt_items)
APR_HOOK_LINK(insert_network_bucket)
APR_HOOK_LINK(get_pollfd_from_conn)
)
AP_IMPLEMENT_HOOK_RUN_ALL(int, get_mgmt_items,
(apr_pool_t *p, const char *val, apr_hash_t *ht),
(p, val, ht), OK, DECLINED)
AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t, insert_network_bucket,
(conn_rec *c, apr_bucket_brigade *bb,
apr_socket_t *socket),
(c, bb, socket), AP_DECLINED)
AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t, get_pollfd_from_conn,
(conn_rec *c, struct apr_pollfd_t *pfd,
apr_interval_time_t *ptimeout),
(c, pfd, ptimeout), APR_ENOTIMPL)
/* Server core module... This module provides support for really basic
* server operations, including options and commands which control the
* operation of other modules. Consider this the bureaucracy module.
*
* The core module also defines handlers, etc., to handle just enough
* to allow a server with the core module ONLY to actually serve documents.
*
* This file could almost be mod_core.c, except for the stuff which affects
* the http_conf_globals.
*/
/* we know core's module_index is 0 */
#undef APLOG_MODULE_INDEX
#define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
/* Handles for core filters */
AP_DECLARE_DATA ap_filter_rec_t *ap_subreq_core_filter_handle;
AP_DECLARE_DATA ap_filter_rec_t *ap_core_output_filter_handle;
AP_DECLARE_DATA ap_filter_rec_t *ap_content_length_filter_handle;
AP_DECLARE_DATA ap_filter_rec_t *ap_core_input_filter_handle;
/* Provide ap_document_root_check storage and default value = true */
AP_DECLARE_DATA int ap_document_root_check = 1;
/* magic pointer for ErrorDocument xxx "default" */
static char errordocument_default;
/* Global state allocated out of pconf: variables here MUST be
* cleared/reset in reset_config(), a pconf cleanup, to avoid the
* variable getting reused after the pool is cleared. */
static apr_array_header_t *saved_server_config_defines = NULL;
static apr_table_t *server_config_defined_vars = NULL;
AP_DECLARE_DATA const char *ap_runtime_dir = NULL;
AP_DECLARE_DATA int ap_main_state = AP_SQ_MS_INITIAL_STARTUP;
AP_DECLARE_DATA int ap_run_mode = AP_SQ_RM_UNKNOWN;
AP_DECLARE_DATA int ap_config_generation = 0;
static void *create_core_dir_config(apr_pool_t *a, char *dir)
{
core_dir_config *conf;
conf = (core_dir_config *)apr_pcalloc(a, sizeof(core_dir_config));
/* conf->r and conf->d[_*] are initialized by dirsection() or left NULL */
conf->opts = dir ? OPT_UNSET : OPT_UNSET|OPT_SYM_LINKS;
conf->opts_add = conf->opts_remove = OPT_NONE;
conf->override = OR_UNSET|OR_NONE;
conf->override_opts = OPT_UNSET | OPT_ALL | OPT_SYM_OWNER | OPT_MULTI;
conf->content_md5 = AP_CONTENT_MD5_UNSET;
conf->accept_path_info = AP_ACCEPT_PATHINFO_UNSET;
conf->use_canonical_name = USE_CANONICAL_NAME_UNSET;
conf->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_UNSET;
conf->hostname_lookups = HOSTNAME_LOOKUP_UNSET;
/*
* left as NULL (we use apr_pcalloc):
* conf->limit_cpu = NULL;
* conf->limit_mem = NULL;
* conf->limit_nproc = NULL;
* conf->sec_file = NULL;
* conf->sec_if = NULL;
*/
conf->limit_req_body = AP_LIMIT_REQ_BODY_UNSET;
conf->limit_xml_body = AP_LIMIT_UNSET;
conf->server_signature = srv_sig_unset;
conf->add_default_charset = ADD_DEFAULT_CHARSET_UNSET;
conf->add_default_charset_name = DEFAULT_ADD_DEFAULT_CHARSET_NAME;
/* Overriding all negotiation
* Set NULL by apr_pcalloc:
* conf->mime_type = NULL;
* conf->handler = NULL;
* conf->output_filters = NULL;
* conf->input_filters = NULL;
*/
/*
* Flag for use of inodes in ETags.
*/
conf->etag_bits = ETAG_UNSET;
conf->etag_add = ETAG_UNSET;
conf->etag_remove = ETAG_UNSET;
conf->enable_mmap = ENABLE_MMAP_UNSET;
conf->enable_sendfile = ENABLE_SENDFILE_UNSET;
conf->allow_encoded_slashes = 0;
conf->decode_encoded_slashes = 0;
conf->max_ranges = AP_MAXRANGES_UNSET;
conf->max_overlaps = AP_MAXRANGES_UNSET;
conf->max_reversals = AP_MAXRANGES_UNSET;
conf->cgi_pass_auth = AP_CGI_PASS_AUTH_UNSET;
conf->qualify_redirect_url = AP_CORE_CONFIG_UNSET;
return (void *)conf;
}
static void *merge_core_dir_configs(apr_pool_t *a, void *basev, void *newv)
{
core_dir_config *base = (core_dir_config *)basev;
core_dir_config *new = (core_dir_config *)newv;
core_dir_config *conf;
/* Create this conf by duplicating the base, replacing elements
* (or creating copies for merging) where new-> values exist.
*/
conf = (core_dir_config *)apr_pmemdup(a, base, sizeof(core_dir_config));
conf->d = new->d;
conf->d_is_fnmatch = new->d_is_fnmatch;
conf->d_components = new->d_components;
conf->r = new->r;
conf->refs = new->refs;
conf->condition = new->condition;
if (new->opts & OPT_UNSET) {
/* there was no explicit setting of new->opts, so we merge
* preserve the invariant (opts_add & opts_remove) == 0
*/
conf->opts_add = (conf->opts_add & ~new->opts_remove) | new->opts_add;
conf->opts_remove = (conf->opts_remove & ~new->opts_add)
| new->opts_remove;
conf->opts = (conf->opts & ~conf->opts_remove) | conf->opts_add;
/* If Includes was enabled with exec in the base config, but
* was enabled without exec in the new config, then disable
* exec in the merged set. */
if (((base->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
== (OPT_INCLUDES|OPT_INC_WITH_EXEC))
&& ((new->opts & (OPT_INCLUDES|OPT_INC_WITH_EXEC))
== OPT_INCLUDES)) {
conf->opts &= ~OPT_INC_WITH_EXEC;
}
}
else {
/* otherwise we just copy, because an explicit opts setting
* overrides all earlier +/- modifiers
*/
conf->opts = new->opts;
conf->opts_add = new->opts_add;
conf->opts_remove = new->opts_remove;
}
if (!(new->override & OR_UNSET)) {
conf->override = new->override;
}
if (!(new->override_opts & OPT_UNSET)) {
conf->override_opts = new->override_opts;
}
if (new->override_list != NULL) {
conf->override_list = new->override_list;
}
if (conf->response_code_exprs == NULL) {
conf->response_code_exprs = new->response_code_exprs;
}
else if (new->response_code_exprs != NULL) {
conf->response_code_exprs = apr_hash_overlay(a,
new->response_code_exprs, conf->response_code_exprs);
}
/* Otherwise we simply use the base->response_code_exprs array
*/
if (new->hostname_lookups != HOSTNAME_LOOKUP_UNSET) {
conf->hostname_lookups = new->hostname_lookups;
}
if (new->content_md5 != AP_CONTENT_MD5_UNSET) {
conf->content_md5 = new->content_md5;
}
if (new->accept_path_info != AP_ACCEPT_PATHINFO_UNSET) {
conf->accept_path_info = new->accept_path_info;
}
if (new->use_canonical_name != USE_CANONICAL_NAME_UNSET) {
conf->use_canonical_name = new->use_canonical_name;
}
if (new->use_canonical_phys_port != USE_CANONICAL_PHYS_PORT_UNSET) {
conf->use_canonical_phys_port = new->use_canonical_phys_port;
}
#ifdef RLIMIT_CPU
if (new->limit_cpu) {
conf->limit_cpu = new->limit_cpu;
}
#endif
#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
if (new->limit_mem) {
conf->limit_mem = new->limit_mem;
}
#endif
#ifdef RLIMIT_NPROC
if (new->limit_nproc) {
conf->limit_nproc = new->limit_nproc;
}
#endif
if (new->limit_req_body != AP_LIMIT_REQ_BODY_UNSET) {
conf->limit_req_body = new->limit_req_body;
}
if (new->limit_xml_body != AP_LIMIT_UNSET)
conf->limit_xml_body = new->limit_xml_body;
if (!conf->sec_file) {
conf->sec_file = new->sec_file;
}
else if (new->sec_file) {
/* If we merge, the merge-result must have its own array
*/
conf->sec_file = apr_array_append(a, base->sec_file, new->sec_file);
}
/* Otherwise we simply use the base->sec_file array
*/
if (!conf->sec_if) {
conf->sec_if = new->sec_if;
}
else if (new->sec_if) {
/* If we merge, the merge-result must have its own array
*/
conf->sec_if = apr_array_append(a, base->sec_if, new->sec_if);
}
/* Otherwise we simply use the base->sec_if array
*/
if (new->server_signature != srv_sig_unset) {
conf->server_signature = new->server_signature;
}
if (new->add_default_charset != ADD_DEFAULT_CHARSET_UNSET) {
conf->add_default_charset = new->add_default_charset;
conf->add_default_charset_name = new->add_default_charset_name;
}
/* Overriding all negotiation
*/
if (new->mime_type) {
conf->mime_type = new->mime_type;
}
if (new->handler) {
conf->handler = new->handler;
}
if (new->expr_handler) {
conf->expr_handler = new->expr_handler;
}
if (new->output_filters) {
conf->output_filters = new->output_filters;
}
if (new->input_filters) {
conf->input_filters = new->input_filters;
}
/*
* Now merge the setting of the FileETag directive.
*/
if (new->etag_bits == ETAG_UNSET) {
conf->etag_add =
(conf->etag_add & (~ new->etag_remove)) | new->etag_add;
conf->etag_remove =
(conf->etag_remove & (~ new->etag_add)) | new->etag_remove;
conf->etag_bits =
(conf->etag_bits & (~ conf->etag_remove)) | conf->etag_add;
}
else {
conf->etag_bits = new->etag_bits;
conf->etag_add = new->etag_add;
conf->etag_remove = new->etag_remove;
}
if (conf->etag_bits != ETAG_NONE) {
conf->etag_bits &= (~ ETAG_NONE);
}
if (new->enable_mmap != ENABLE_MMAP_UNSET) {
conf->enable_mmap = new->enable_mmap;
}
if (new->enable_sendfile != ENABLE_SENDFILE_UNSET) {
conf->enable_sendfile = new->enable_sendfile;
}
if (new->read_buf_size) {
conf->read_buf_size = new->read_buf_size;
}
else {
conf->read_buf_size = base->read_buf_size;
}
conf->allow_encoded_slashes = new->allow_encoded_slashes;
conf->decode_encoded_slashes = new->decode_encoded_slashes;
if (new->log) {
if (!conf->log) {
conf->log = new->log;
}
else {
conf->log = ap_new_log_config(a, new->log);
ap_merge_log_config(base->log, conf->log);
}
}
conf->max_ranges = new->max_ranges != AP_MAXRANGES_UNSET ? new->max_ranges : base->max_ranges;
conf->max_overlaps = new->max_overlaps != AP_MAXRANGES_UNSET ? new->max_overlaps : base->max_overlaps;
conf->max_reversals = new->max_reversals != AP_MAXRANGES_UNSET ? new->max_reversals : base->max_reversals;
conf->cgi_pass_auth = new->cgi_pass_auth != AP_CGI_PASS_AUTH_UNSET ? new->cgi_pass_auth : base->cgi_pass_auth;
if (new->cgi_var_rules) {
if (!conf->cgi_var_rules) {
conf->cgi_var_rules = new->cgi_var_rules;
}
else {
conf->cgi_var_rules = apr_hash_overlay(a, new->cgi_var_rules, conf->cgi_var_rules);
}
}
AP_CORE_MERGE_FLAG(qualify_redirect_url, conf, base, new);
return (void*)conf;
}
#if APR_HAS_SO_ACCEPTFILTER
#ifndef ACCEPT_FILTER_NAME
#define ACCEPT_FILTER_NAME "httpready"
#ifdef __FreeBSD_version
#if __FreeBSD_version < 411000 /* httpready broken before 4.1.1 */
#undef ACCEPT_FILTER_NAME
#define ACCEPT_FILTER_NAME "dataready"
#endif
#endif
#endif
#endif
static void *create_core_server_config(apr_pool_t *a, server_rec *s)
{
core_server_config *conf;
int is_virtual = s->is_virtual;
conf = (core_server_config *)apr_pcalloc(a, sizeof(core_server_config));
/* global-default / global-only settings */
if (!is_virtual) {
conf->ap_document_root = DOCUMENT_LOCATION;
conf->access_name = DEFAULT_ACCESS_FNAME;
/* A mapping only makes sense in the global context */
conf->accf_map = apr_table_make(a, 5);
#if APR_HAS_SO_ACCEPTFILTER
apr_table_setn(conf->accf_map, "http", ACCEPT_FILTER_NAME);
apr_table_setn(conf->accf_map, "https", "dataready");
#elif defined(WIN32)
/* 'data' is disabled on Windows due to a DoS vuln (PR 59970) */
apr_table_setn(conf->accf_map, "http", "connect");
apr_table_setn(conf->accf_map, "https", "connect");
#else
apr_table_setn(conf->accf_map, "http", "data");
apr_table_setn(conf->accf_map, "https", "data");
#endif
conf->flush_max_threshold = AP_FLUSH_MAX_THRESHOLD;
conf->flush_max_pipelined = AP_FLUSH_MAX_PIPELINED;
}
else {
/* Use main ErrorLogFormat while the vhost is loading */
core_server_config *main_conf =
ap_get_core_module_config(ap_server_conf->module_config);
conf->error_log_format = main_conf->error_log_format;
conf->flush_max_pipelined = -1;
}
/* initialization, no special case for global context */
conf->sec_dir = apr_array_make(a, 40, sizeof(ap_conf_vector_t *));
conf->sec_url = apr_array_make(a, 40, sizeof(ap_conf_vector_t *));
/* pcalloc'ed - we have NULL's/0's
conf->gprof_dir = NULL;
** recursion stopper; 0 == unset
conf->redirect_limit = 0;
conf->subreq_limit = 0;
conf->protocol = NULL;
*/
conf->trace_enable = AP_TRACE_UNSET;
conf->protocols = apr_array_make(a, 5, sizeof(const char *));
conf->protocols_honor_order = -1;
conf->merge_slashes = AP_CORE_CONFIG_UNSET;
conf->strict_host_check= AP_CORE_CONFIG_UNSET;
return (void *)conf;
}
static void *merge_core_server_configs(apr_pool_t *p, void *basev, void *virtv)
{
core_server_config *base = (core_server_config *)basev;
core_server_config *virt = (core_server_config *)virtv;
core_server_config *conf = (core_server_config *)
apr_pmemdup(p, base, sizeof(core_server_config));
if (virt->ap_document_root)
conf->ap_document_root = virt->ap_document_root;
if (virt->access_name)
conf->access_name = virt->access_name;
/* XXX optimize to keep base->sec_ pointers if virt->sec_ array is empty */
conf->sec_dir = apr_array_append(p, base->sec_dir, virt->sec_dir);
conf->sec_url = apr_array_append(p, base->sec_url, virt->sec_url);
if (virt->redirect_limit)
conf->redirect_limit = virt->redirect_limit;
if (virt->subreq_limit)
conf->subreq_limit = virt->subreq_limit;
if (virt->trace_enable != AP_TRACE_UNSET)
conf->trace_enable = virt->trace_enable;
if (virt->http09_enable != AP_HTTP09_UNSET)
conf->http09_enable = virt->http09_enable;
if (virt->http_conformance != AP_HTTP_CONFORMANCE_UNSET)
conf->http_conformance = virt->http_conformance;
if (virt->http_methods != AP_HTTP_METHODS_UNSET)
conf->http_methods = virt->http_methods;
/* no action for virt->accf_map, not allowed per-vhost */
if (virt->protocol)
conf->protocol = virt->protocol;
if (virt->gprof_dir)
conf->gprof_dir = virt->gprof_dir;
if (virt->error_log_format)
conf->error_log_format = virt->error_log_format;
if (virt->error_log_conn)
conf->error_log_conn = virt->error_log_conn;
if (virt->error_log_req)
conf->error_log_req = virt->error_log_req;
conf->merge_trailers = (virt->merge_trailers != AP_MERGE_TRAILERS_UNSET)
? virt->merge_trailers
: base->merge_trailers;
conf->protocols = ((virt->protocols->nelts > 0)?
virt->protocols : base->protocols);
conf->protocols_honor_order = ((virt->protocols_honor_order < 0)?
base->protocols_honor_order :
virt->protocols_honor_order);
AP_CORE_MERGE_FLAG(merge_slashes, conf, base, virt);
conf->flush_max_threshold = (virt->flush_max_threshold)
? virt->flush_max_threshold
: base->flush_max_threshold;
conf->flush_max_pipelined = (virt->flush_max_pipelined >= 0)
? virt->flush_max_pipelined
: base->flush_max_pipelined;
conf->strict_host_check = (virt->strict_host_check != AP_CORE_CONFIG_UNSET)
? virt->strict_host_check
: base->strict_host_check;
AP_CORE_MERGE_FLAG(strict_host_check, conf, base, virt);
return conf;
}
/* Add per-directory configuration entry (for <directory> section);
* these are part of the core server config.
*/
AP_CORE_DECLARE(void) ap_add_per_dir_conf(server_rec *s, void *dir_config)
{
core_server_config *sconf = ap_get_core_module_config(s->module_config);
void **new_space = (void **)apr_array_push(sconf->sec_dir);
*new_space = dir_config;
}
AP_CORE_DECLARE(void) ap_add_per_url_conf(server_rec *s, void *url_config)
{
core_server_config *sconf = ap_get_core_module_config(s->module_config);
void **new_space = (void **)apr_array_push(sconf->sec_url);
*new_space = url_config;
}
AP_CORE_DECLARE(void) ap_add_file_conf(apr_pool_t *p, core_dir_config *conf,
void *url_config)
{
void **new_space;
if (!conf->sec_file)
conf->sec_file = apr_array_make(p, 2, sizeof(ap_conf_vector_t *));
new_space = (void **)apr_array_push(conf->sec_file);
*new_space = url_config;
}
AP_CORE_DECLARE(const char *) ap_add_if_conf(apr_pool_t *p,
core_dir_config *conf,
void *if_config)
{
void **new_space;
core_dir_config *new = ap_get_module_config(if_config, &core_module);
if (!conf->sec_if) {
conf->sec_if = apr_array_make(p, 2, sizeof(ap_conf_vector_t *));
}
if (new->condition_ifelse & AP_CONDITION_ELSE) {
int have_if = 0;
if (conf->sec_if->nelts > 0) {
core_dir_config *last;
ap_conf_vector_t *lastelt = APR_ARRAY_IDX(conf->sec_if,
conf->sec_if->nelts - 1,
ap_conf_vector_t *);
last = ap_get_module_config(lastelt, &core_module);
if (last->condition_ifelse & AP_CONDITION_IF)
have_if = 1;
}
if (!have_if)
return "<Else> or <ElseIf> section without previous <If> or "
"<ElseIf> section in same scope";
}
new_space = (void **)apr_array_push(conf->sec_if);
*new_space = if_config;
return NULL;
}
/* We need to do a stable sort, qsort isn't stable. So to make it stable
* we'll be maintaining the original index into the list, and using it
* as the minor key during sorting. The major key is the number of
* components (where the root component is zero).
*/
struct reorder_sort_rec {
ap_conf_vector_t *elt;
int orig_index;
};
static int reorder_sorter(const void *va, const void *vb)
{
const struct reorder_sort_rec *a = va;
const struct reorder_sort_rec *b = vb;
core_dir_config *core_a;
core_dir_config *core_b;
core_a = ap_get_core_module_config(a->elt);
core_b = ap_get_core_module_config(b->elt);
/* a regex always sorts after a non-regex
*/
if (!core_a->r && core_b->r) {
return -1;
}
else if (core_a->r && !core_b->r) {
return 1;
}
/* we always sort next by the number of components
*/
if (core_a->d_components < core_b->d_components) {
return -1;
}
else if (core_a->d_components > core_b->d_components) {
return 1;
}
/* They have the same number of components, we now have to compare
* the minor key to maintain the original order (from the config.)
*/
return a->orig_index - b->orig_index;
}
void ap_core_reorder_directories(apr_pool_t *p, server_rec *s)
{
core_server_config *sconf;
apr_array_header_t *sec_dir;
struct reorder_sort_rec *sortbin;
int nelts;
ap_conf_vector_t **elts;
int i;
apr_pool_t *tmp;
sconf = ap_get_core_module_config(s->module_config);
sec_dir = sconf->sec_dir;
nelts = sec_dir->nelts;
elts = (ap_conf_vector_t **)sec_dir->elts;
if (!nelts) {
/* simple case of already being sorted... */
/* We're not checking this condition to be fast... we're checking
* it to avoid trying to palloc zero bytes, which can trigger some
* memory debuggers to barf
*/
return;
}
/* we have to allocate tmp space to do a stable sort */
apr_pool_create(&tmp, p);
apr_pool_tag(tmp, "core_reorder_directories");
sortbin = apr_palloc(tmp, sec_dir->nelts * sizeof(*sortbin));
for (i = 0; i < nelts; ++i) {
sortbin[i].orig_index = i;
sortbin[i].elt = elts[i];
}
qsort(sortbin, nelts, sizeof(*sortbin), reorder_sorter);
/* and now copy back to the original array */
for (i = 0; i < nelts; ++i) {
elts[i] = sortbin[i].elt;
}
apr_pool_destroy(tmp);
}
/*****************************************************************
*
* There are some elements of the core config structures in which
* other modules have a legitimate interest (this is ugly, but necessary
* to preserve NCSA back-compatibility). So, we have a bunch of accessors
* here...
*/
AP_DECLARE(int) ap_allow_options(request_rec *r)
{
core_dir_config *conf =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
return conf->opts;
}
AP_DECLARE(int) ap_allow_overrides(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
return conf->override;
}
/*
* Optional function coming from mod_authn_core, used for
* retrieving the type of authorization
*/
static APR_OPTIONAL_FN_TYPE(authn_ap_auth_type) *authn_ap_auth_type;
AP_DECLARE(const char *) ap_auth_type(request_rec *r)
{
if (authn_ap_auth_type) {
return authn_ap_auth_type(r);
}
return NULL;
}
/*
* Optional function coming from mod_authn_core, used for
* retrieving the authorization realm
*/
static APR_OPTIONAL_FN_TYPE(authn_ap_auth_name) *authn_ap_auth_name;
AP_DECLARE(const char *) ap_auth_name(request_rec *r)
{
if (authn_ap_auth_name) {
return authn_ap_auth_name(r);
}
return NULL;
}
/*
* Optional function coming from mod_access_compat, used to determine how
access control interacts with authentication/authorization
*/
static APR_OPTIONAL_FN_TYPE(access_compat_ap_satisfies) *access_compat_ap_satisfies;
AP_DECLARE(int) ap_satisfies(request_rec *r)
{
if (access_compat_ap_satisfies) {
return access_compat_ap_satisfies(r);
}
return SATISFY_NOSPEC;
}
AP_DECLARE(const char *) ap_document_root(request_rec *r) /* Don't use this! */
{
core_server_config *sconf;
core_request_config *rconf = ap_get_core_module_config(r->request_config);
if (rconf->document_root)
return rconf->document_root;
sconf = ap_get_core_module_config(r->server->module_config);
return sconf->ap_document_root;
}
AP_DECLARE(const char *) ap_context_prefix(request_rec *r)
{
core_request_config *conf = ap_get_core_module_config(r->request_config);
if (conf->context_prefix)
return conf->context_prefix;
else
return "";
}
AP_DECLARE(const char *) ap_context_document_root(request_rec *r)
{
core_request_config *conf = ap_get_core_module_config(r->request_config);
if (conf->context_document_root)
return conf->context_document_root;
else
return ap_document_root(r);
}
AP_DECLARE(void) ap_set_document_root(request_rec *r, const char *document_root)
{
core_request_config *conf = ap_get_core_module_config(r->request_config);
conf->document_root = document_root;
}
AP_DECLARE(void) ap_set_context_info(request_rec *r, const char *context_prefix,
const char *context_document_root)
{
core_request_config *conf = ap_get_core_module_config(r->request_config);
if (context_prefix)
conf->context_prefix = context_prefix;
if (context_document_root)
conf->context_document_root = context_document_root;
}
/* Should probably just get rid of this... the only code that cares is
* part of the core anyway (and in fact, it isn't publicised to other
* modules).
*/
char *ap_response_code_string(request_rec *r, int error_index)
{
core_dir_config *dirconf;
core_request_config *reqconf = ap_get_core_module_config(r->request_config);
const char *err;
const char *response;
ap_expr_info_t *expr;
/* check for string registered via ap_custom_response() first */
if (reqconf->response_code_strings != NULL
&& reqconf->response_code_strings[error_index] != NULL) {
return reqconf->response_code_strings[error_index];
}
/* check for string specified via ErrorDocument */
dirconf = ap_get_core_module_config(r->per_dir_config);
if (!dirconf->response_code_exprs) {
return NULL;
}
expr = apr_hash_get(dirconf->response_code_exprs, &error_index,
sizeof(error_index));
if (!expr) {
return NULL;
}
/* special token to indicate revert back to default */
if ((char *) expr == &errordocument_default) {
return NULL;
}
err = NULL;
response = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(
APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02841) "core: ErrorDocument: can't "
"evaluate require expression: %s", err);
return NULL;
}
/* alas, duplication required as we return not-const */
return apr_pstrdup(r->pool, response);
}
/* Code from Harald Hanche-Olsen <hanche@imf.unit.no> */
static APR_INLINE int do_double_reverse (int double_reverse,
const char *remote_host,
apr_sockaddr_t *client_addr,
apr_pool_t *pool)
{
apr_sockaddr_t *sa;
apr_status_t rv;
if (double_reverse) {
/* already done */
return double_reverse;
}
if (remote_host == NULL || remote_host[0] == '\0') {
/* single reverse failed, so don't bother */
return -1;
}
rv = apr_sockaddr_info_get(&sa, remote_host, APR_UNSPEC, 0, 0, pool);
if (rv == APR_SUCCESS) {
while (sa) {
if (apr_sockaddr_equal(sa, client_addr)) {
return 1;
}
sa = sa->next;
}
}
return -1;
}
AP_DECLARE(const char *) ap_get_remote_host(conn_rec *conn, void *dir_config,
int type, int *str_is_ip)
{
int hostname_lookups;
int ignored_str_is_ip;
if (!str_is_ip) { /* caller doesn't want to know */
str_is_ip = &ignored_str_is_ip;
}
*str_is_ip = 0;
/* If we haven't checked the host name, and we want to */
if (dir_config) {
hostname_lookups = ((core_dir_config *)ap_get_core_module_config(dir_config))
->hostname_lookups;
if (hostname_lookups == HOSTNAME_LOOKUP_UNSET) {
hostname_lookups = HOSTNAME_LOOKUP_OFF;
}
}
else {
/* the default */
hostname_lookups = HOSTNAME_LOOKUP_OFF;
}
if (type != REMOTE_NOLOOKUP
&& conn->remote_host == NULL
&& (type == REMOTE_DOUBLE_REV
|| hostname_lookups != HOSTNAME_LOOKUP_OFF)) {
if (apr_getnameinfo(&conn->remote_host, conn->client_addr, 0)
== APR_SUCCESS) {
ap_str_tolower(conn->remote_host);
if (hostname_lookups == HOSTNAME_LOOKUP_DOUBLE) {
conn->double_reverse = do_double_reverse(conn->double_reverse,
conn->remote_host,
conn->client_addr,
conn->pool);
if (conn->double_reverse != 1) {
conn->remote_host = NULL;
}
}
}
/* if failed, set it to the NULL string to indicate error */
if (conn->remote_host == NULL) {
conn->remote_host = "";
}
}
if (type == REMOTE_DOUBLE_REV) {
conn->double_reverse = do_double_reverse(conn->double_reverse,
conn->remote_host,
conn->client_addr, conn->pool);
if (conn->double_reverse == -1) {
return NULL;
}
}
/*
* Return the desired information; either the remote DNS name, if found,
* or either NULL (if the hostname was requested) or the IP address
* (if any identifier was requested).
*/
if (conn->remote_host != NULL && conn->remote_host[0] != '\0') {
return conn->remote_host;
}
else {
if (type == REMOTE_HOST || type == REMOTE_DOUBLE_REV) {
return NULL;
}
else {
*str_is_ip = 1;
return conn->client_ip;
}
}
}
AP_DECLARE(const char *) ap_get_useragent_host(request_rec *r,
int type, int *str_is_ip)
{
conn_rec *conn = r->connection;
int hostname_lookups;
int ignored_str_is_ip;
/* Guard here when examining the host before the read_request hook
* has populated an r->useragent_addr
*/
if (!r->useragent_addr || (r->useragent_addr == conn->client_addr)) {
return ap_get_remote_host(conn, r->per_dir_config, type, str_is_ip);
}
if (!str_is_ip) { /* caller doesn't want to know */
str_is_ip = &ignored_str_is_ip;
}
*str_is_ip = 0;
hostname_lookups = ((core_dir_config *)
ap_get_core_module_config(r->per_dir_config))
->hostname_lookups;
if (hostname_lookups == HOSTNAME_LOOKUP_UNSET) {
hostname_lookups = HOSTNAME_LOOKUP_OFF;
}
if (type != REMOTE_NOLOOKUP
&& r->useragent_host == NULL
&& (type == REMOTE_DOUBLE_REV
|| hostname_lookups != HOSTNAME_LOOKUP_OFF)) {
if (apr_getnameinfo(&r->useragent_host, r->useragent_addr, 0)
== APR_SUCCESS) {
ap_str_tolower(r->useragent_host);
if (hostname_lookups == HOSTNAME_LOOKUP_DOUBLE) {
r->double_reverse = do_double_reverse(r->double_reverse,
r->useragent_host,
r->useragent_addr,
r->pool);
if (r->double_reverse != 1) {
r->useragent_host = NULL;
}
}
}
/* if failed, set it to the NULL string to indicate error */
if (r->useragent_host == NULL) {
r->useragent_host = "";
}
}
if (type == REMOTE_DOUBLE_REV) {
r->double_reverse = do_double_reverse(r->double_reverse,
r->useragent_host,
r->useragent_addr, r->pool);
if (r->double_reverse == -1) {
return NULL;
}
}
/*
* Return the desired information; either the remote DNS name, if found,
* or either NULL (if the hostname was requested) or the IP address
* (if any identifier was requested).
*/
if (r->useragent_host != NULL && r->useragent_host[0] != '\0') {
return r->useragent_host;
}
else {
if (type == REMOTE_HOST || type == REMOTE_DOUBLE_REV) {
return NULL;
}
else {
*str_is_ip = 1;
return r->useragent_ip;
}
}
}
/*
* Optional function coming from mod_ident, used for looking up ident user
*/
static APR_OPTIONAL_FN_TYPE(ap_ident_lookup) *ident_lookup;
AP_DECLARE(const char *) ap_get_remote_logname(request_rec *r)
{
if (r->connection->remote_logname != NULL) {
return r->connection->remote_logname;
}
if (ident_lookup) {
return ident_lookup(r);
}
return NULL;
}
/* There are two options regarding what the "name" of a server is. The
* "canonical" name as defined by ServerName and Port, or the "client's
* name" as supplied by a possible Host: header or full URI.
*
* The DNS option to UseCanonicalName causes this routine to do a
* reverse lookup on the local IP address of the connection and use
* that for the ServerName. This makes its value more reliable while
* at the same time allowing Demon's magic virtual hosting to work.
* The assumption is that DNS lookups are sufficiently quick...
* -- fanf 1998-10-03
*/
AP_DECLARE(const char *) ap_get_server_name(request_rec *r)
{
conn_rec *conn = r->connection;
core_dir_config *d;
const char *retval;
d = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
switch (d->use_canonical_name) {
case USE_CANONICAL_NAME_ON:
retval = r->server->server_hostname;
break;
case USE_CANONICAL_NAME_DNS:
if (conn->local_host == NULL) {
if (apr_getnameinfo(&conn->local_host,
conn->local_addr, 0) != APR_SUCCESS)
conn->local_host = apr_pstrdup(conn->pool,
r->server->server_hostname);
else {
ap_str_tolower(conn->local_host);
}
}
retval = conn->local_host;
break;
case USE_CANONICAL_NAME_OFF:
case USE_CANONICAL_NAME_UNSET:
retval = r->hostname ? r->hostname : r->server->server_hostname;
break;
default:
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00109)
"ap_get_server_name: Invalid UCN Option somehow");
retval = "localhost";
break;
}
return retval;
}
/*
* Get the current server name from the request for the purposes
* of using in a URL. If the server name is an IPv6 literal
* address, it will be returned in URL format (e.g., "[fe80::1]").
*/
AP_DECLARE(const char *) ap_get_server_name_for_url(request_rec *r)
{
const char *plain_server_name = ap_get_server_name(r);
#if APR_HAVE_IPV6
if (ap_strchr_c(plain_server_name, ':')) { /* IPv6 literal? */
return apr_pstrcat(r->pool, "[", plain_server_name, "]", NULL);
}
#endif
return plain_server_name;
}
AP_DECLARE(apr_port_t) ap_get_server_port(const request_rec *r)
{
apr_port_t port;
core_dir_config *d =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
switch (d->use_canonical_name) {
case USE_CANONICAL_NAME_OFF:
case USE_CANONICAL_NAME_DNS:
case USE_CANONICAL_NAME_UNSET:
if (d->use_canonical_phys_port == USE_CANONICAL_PHYS_PORT_ON)
port = r->parsed_uri.port_str ? r->parsed_uri.port :
r->connection->local_addr->port ? r->connection->local_addr->port :
r->server->port ? r->server->port :
ap_default_port(r);
else /* USE_CANONICAL_PHYS_PORT_OFF or USE_CANONICAL_PHYS_PORT_UNSET */
port = r->parsed_uri.port_str ? r->parsed_uri.port :
r->server->port ? r->server->port :
ap_default_port(r);
break;
case USE_CANONICAL_NAME_ON:
/* With UseCanonicalName on (and in all versions prior to 1.3)
* Apache will use the hostname and port specified in the
* ServerName directive to construct a canonical name for the
* server. (If no port was specified in the ServerName
* directive, Apache uses the port supplied by the client if
* any is supplied, and finally the default port for the protocol
* used.
*/
if (d->use_canonical_phys_port == USE_CANONICAL_PHYS_PORT_ON)
port = r->server->port ? r->server->port :
r->connection->local_addr->port ? r->connection->local_addr->port :
ap_default_port(r);
else /* USE_CANONICAL_PHYS_PORT_OFF or USE_CANONICAL_PHYS_PORT_UNSET */
port = r->server->port ? r->server->port :
ap_default_port(r);
break;
default:
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00110)
"ap_get_server_port: Invalid UCN Option somehow");
port = ap_default_port(r);
break;
}
return port;
}
AP_DECLARE(char *) ap_construct_url(apr_pool_t *p, const char *uri,
request_rec *r)
{
unsigned port = ap_get_server_port(r);
const char *host = ap_get_server_name_for_url(r);
if (ap_is_default_port(port, r)) {
return apr_pstrcat(p, ap_http_scheme(r), "://", host, uri, NULL);
}
return apr_psprintf(p, "%s://%s:%u%s", ap_http_scheme(r), host, port, uri);
}
AP_DECLARE(apr_off_t) ap_get_limit_req_body(const request_rec *r)
{
core_dir_config *d =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
if (d->limit_req_body == AP_LIMIT_REQ_BODY_UNSET) {
return AP_DEFAULT_LIMIT_REQ_BODY;
}
return d->limit_req_body;
}
AP_DECLARE(apr_size_t) ap_get_read_buf_size(const request_rec *r)
{
core_dir_config *d = ap_get_core_module_config(r->per_dir_config);
return d->read_buf_size ? d->read_buf_size : AP_IOBUFSIZE;
}
/*****************************************************************
*
* Commands... this module handles almost all of the NCSA httpd.conf
* commands, but most of the old srm.conf is in the modules.
*/
/* returns a parent if it matches the given directive */
static const ap_directive_t * find_parent(const ap_directive_t *dirp,
const char *what)
{
while (dirp->parent != NULL) {
dirp = dirp->parent;
/* ### it would be nice to have atom-ized directives */
if (ap_cstr_casecmp(dirp->directive, what) == 0)
return dirp;
}
return NULL;
}
AP_DECLARE(const char *) ap_check_cmd_context(cmd_parms *cmd,
unsigned forbidden)
{
const char *gt = (cmd->cmd->name[0] == '<'
&& cmd->cmd->name[strlen(cmd->cmd->name)-1] != '>')
? ">" : "";
const ap_directive_t *found;
if ((forbidden & NOT_IN_VIRTUALHOST) && cmd->server->is_virtual) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within <VirtualHost> section", NULL);
}
if ((forbidden & NOT_IN_DIR_CONTEXT) && cmd->limited != -1) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within <Limit> or <LimitExcept> "
"section", NULL);
}
if ((forbidden & NOT_IN_HTACCESS) && (cmd->pool == cmd->temp_pool)) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within htaccess files", NULL);
}
if ((forbidden & NOT_IN_DIR_LOC_FILE) == NOT_IN_DIR_LOC_FILE) {
if (cmd->path != NULL) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within directory context", NULL);
}
if (cmd->cmd->req_override & EXEC_ON_READ) {
/* EXEC_ON_READ must be NOT_IN_DIR_LOC_FILE, if not, it will
* (deliberately) segfault below in the individual tests...
*/
return NULL;
}
}
if (((forbidden & NOT_IN_DIRECTORY)
&& ((found = find_parent(cmd->directive, "<Directory"))
|| (found = find_parent(cmd->directive, "<DirectoryMatch"))))
|| ((forbidden & NOT_IN_LOCATION)
&& ((found = find_parent(cmd->directive, "<Location"))
|| (found = find_parent(cmd->directive, "<LocationMatch"))))
|| ((forbidden & NOT_IN_FILES)
&& ((found = find_parent(cmd->directive, "<Files"))
|| (found = find_parent(cmd->directive, "<FilesMatch"))
|| (found = find_parent(cmd->directive, "<If"))
|| (found = find_parent(cmd->directive, "<ElseIf"))
|| (found = find_parent(cmd->directive, "<Else"))))
|| ((forbidden & NOT_IN_PROXY)
&& ((found = find_parent(cmd->directive, "<Proxy"))
|| (found = find_parent(cmd->directive, "<ProxyMatch"))))) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within ", found->directive,
"> section", NULL);
}
return NULL;
}
static const char *set_access_name(cmd_parms *cmd, void *dummy,
const char *arg)
{
void *sconf = cmd->server->module_config;
core_server_config *conf = ap_get_core_module_config(sconf);
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
conf->access_name = apr_pstrdup(cmd->pool, arg);
return NULL;
}
AP_DECLARE(const char *) ap_resolve_env(apr_pool_t *p, const char * word)
{
# define SMALL_EXPANSION 5
struct sll {
struct sll *next;
const char *string;
apr_size_t len;
} *result, *current, sresult[SMALL_EXPANSION];
char *res_buf, *cp;
const char *s, *e, *ep;
unsigned spc;
apr_size_t outlen;
s = ap_strchr_c(word, '$');
if (!s) {
return word;
}
/* well, actually something to do */
ep = word + strlen(word);
spc = 0;
result = current = &(sresult[spc++]);
current->next = NULL;
current->string = word;
current->len = s - word;
outlen = current->len;
do {
/* prepare next entry */
if (current->len) {
current->next = (spc < SMALL_EXPANSION)
? &(sresult[spc++])
: (struct sll *)apr_palloc(p,
sizeof(*current->next));
current = current->next;
current->next = NULL;
current->len = 0;
}
if (*s == '$') {
if (s[1] == '{' && (e = ap_strchr_c(s+2, '}'))) {
char *name = apr_pstrmemdup(p, s+2, e-s-2);
word = NULL;
if (server_config_defined_vars)
word = apr_table_get(server_config_defined_vars, name);
if (!word)
word = apr_pstrdup(p, getenv(name));
if (word) {
current->string = word;
current->len = strlen(word);
outlen += current->len;
}
else {
if (ap_strchr(name, ':') == 0)
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, NULL, APLOGNO(00111)
"Config variable ${%s} is not defined",
name);
current->string = s;
current->len = e - s + 1;
outlen += current->len;
}
s = e + 1;
}
else {
current->string = s++;
current->len = 1;
++outlen;
}
}
else {
word = s;
s = ap_strchr_c(s, '$');
current->string = word;
current->len = s ? s - word : ep - word;
outlen += current->len;
}
} while (s && *s);
/* assemble result */
res_buf = cp = apr_palloc(p, outlen + 1);
do {
if (result->len) {
memcpy(cp, result->string, result->len);
cp += result->len;
}
result = result->next;
} while (result);
res_buf[outlen] = '\0';
return res_buf;
}
static int reset_config_defines(void *dummy)
{
ap_server_config_defines = saved_server_config_defines;
saved_server_config_defines = NULL;
server_config_defined_vars = NULL;
ap_runtime_dir = NULL;
return OK;
}
/*
* Make sure we can revert the effects of Define/UnDefine when restarting.
* This function must be called once per loading of the config, before
* ap_server_config_defines is changed. This may be during reading of the
* config, which is even before the pre_config hook is run (due to
* EXEC_ON_READ for Define/UnDefine).
*/
static void init_config_defines(apr_pool_t *pconf)
{
saved_server_config_defines = ap_server_config_defines;
/* Use apr_array_copy instead of apr_array_copy_hdr because it does not
* protect from the way unset_define removes entries.
*/
ap_server_config_defines = apr_array_copy(pconf, ap_server_config_defines);
}
static const char *set_define(cmd_parms *cmd, void *dummy,
const char *name, const char *value)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
if (err)
return err;
if (ap_strchr_c(name, ':') != NULL) {
return "Variable name must not contain ':'";
}
if (!saved_server_config_defines) {
init_config_defines(cmd->pool);
}
if (!ap_exists_config_define(name)) {
*(const char **)apr_array_push(ap_server_config_defines) = name;
}
if (value) {
if (!server_config_defined_vars) {
server_config_defined_vars = apr_table_make(cmd->pool, 5);
}
apr_table_setn(server_config_defined_vars, name, value);
}
return NULL;
}
static const char *unset_define(cmd_parms *cmd, void *dummy,
const char *name)
{
int i;
const char **defines;
const char *err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS);
if (err)
return err;
if (ap_strchr_c(name, ':') != NULL) {
return "Variable name must not contain ':'";
}
if (!saved_server_config_defines) {
init_config_defines(cmd->pool);
}
defines = (const char **)ap_server_config_defines->elts;
for (i = 0; i < ap_server_config_defines->nelts; i++) {
if (strcmp(defines[i], name) == 0) {
defines[i] = *(const char **)apr_array_pop(ap_server_config_defines);
break;
}
}
if (server_config_defined_vars) {
apr_table_unset(server_config_defined_vars, name);
}
return NULL;
}
static const char *generate_error(cmd_parms *cmd, void *dummy,
const char *arg)
{
if (!arg || !*arg) {
return "The Error directive was used with no message.";
}
if (*arg == '"' || *arg == '\'') { /* strip off quotes */
apr_size_t len = strlen(arg);
char last = *(arg + len - 1);
if (*arg == last) {
return apr_pstrndup(cmd->pool, arg + 1, len - 2);
}
}
return arg;
}
#ifdef GPROF
static const char *set_gprof_dir(cmd_parms *cmd, void *dummy, const char *arg)
{
void *sconf = cmd->server->module_config;
core_server_config *conf = ap_get_core_module_config(sconf);
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
conf->gprof_dir = apr_pstrdup(cmd->pool, arg);
return NULL;
}
#endif /*GPROF*/
static const char *set_add_default_charset(cmd_parms *cmd,
void *d_, const char *arg)
{
core_dir_config *d = d_;
if (!ap_cstr_casecmp(arg, "Off")) {
d->add_default_charset = ADD_DEFAULT_CHARSET_OFF;
}
else if (!ap_cstr_casecmp(arg, "On")) {
d->add_default_charset = ADD_DEFAULT_CHARSET_ON;
d->add_default_charset_name = DEFAULT_ADD_DEFAULT_CHARSET_NAME;
}
else {
d->add_default_charset = ADD_DEFAULT_CHARSET_ON;
d->add_default_charset_name = arg;
}
return NULL;
}
static const char *set_document_root(cmd_parms *cmd, void *dummy,
const char *arg)
{
void *sconf = cmd->server->module_config;
core_server_config *conf = ap_get_core_module_config(sconf);
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
/* When ap_document_root_check is false; skip all the stuff below */
if (!ap_document_root_check) {
conf->ap_document_root = arg;
return NULL;
}
/* Make it absolute, relative to ServerRoot */
arg = ap_server_root_relative(cmd->pool, arg);
if (arg == NULL) {
return "DocumentRoot must be a directory";
}
/* TODO: ap_configtestonly */
if (apr_filepath_merge((char**)&conf->ap_document_root, NULL, arg,
APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS
|| !ap_is_directory(cmd->temp_pool, arg)) {
if (cmd->server->is_virtual) {
ap_log_perror(APLOG_MARK, APLOG_STARTUP, 0,
cmd->pool, APLOGNO(00112)
"Warning: DocumentRoot [%s] does not exist",
arg);
conf->ap_document_root = arg;
}
else {
return apr_psprintf(cmd->pool,
"DocumentRoot '%s' is not a directory, or is not readable",
arg);
}
}
return NULL;
}
AP_DECLARE(void) ap_custom_response(request_rec *r, int status,
const char *string)
{
core_request_config *conf = ap_get_core_module_config(r->request_config);
int idx;
if (conf->response_code_strings == NULL) {
conf->response_code_strings =
apr_pcalloc(r->pool,
sizeof(*conf->response_code_strings) * RESPONSE_CODES);
}
idx = ap_index_of_response(status);
conf->response_code_strings[idx] =
((ap_is_url(string) || (*string == '/')) && (*string != '"')) ?
apr_pstrdup(r->pool, string) : apr_pstrcat(r->pool, "\"", string, NULL);
}
static const char *set_error_document(cmd_parms *cmd, void *conf_,
const char *errno_str, const char *msg)
{
core_dir_config *conf = conf_;
int error_number, index_number, idx500;
enum { MSG, LOCAL_PATH, REMOTE_PATH } what = MSG;
/* 1st parameter should be a 3 digit number, which we recognize;
* convert it into an array index
*/
error_number = atoi(errno_str);
idx500 = ap_index_of_response(HTTP_INTERNAL_SERVER_ERROR);
if (error_number == HTTP_INTERNAL_SERVER_ERROR) {
index_number = idx500;
}
else if ((index_number = ap_index_of_response(error_number)) == idx500) {
return apr_pstrcat(cmd->pool, "Unsupported HTTP response code ",
errno_str, NULL);
}
/* Heuristic to determine second argument. */
if (ap_strchr_c(msg,' '))
what = MSG;
else if (msg[0] == '/')
what = LOCAL_PATH;
else if (ap_is_url(msg))
what = REMOTE_PATH;
else
what = MSG;
/* The entry should be ignored if it is a full URL for a 401 error */
if (error_number == 401 && what == REMOTE_PATH) {
ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, cmd->server, APLOGNO(00113)
"%s:%d cannot use a full URL in a 401 ErrorDocument "
"directive --- ignoring!", cmd->directive->filename, cmd->directive->line_num);
}
else { /* Store it... */
if (conf->response_code_exprs == NULL) {
conf->response_code_exprs = apr_hash_make(cmd->pool);
}
if (ap_cstr_casecmp(msg, "default") == 0) {
/* special case: ErrorDocument 404 default restores the
* canned server error response
*/
apr_hash_set(conf->response_code_exprs,
apr_pmemdup(cmd->pool, &index_number, sizeof(index_number)),
sizeof(index_number), &errordocument_default);
}
else {
ap_expr_info_t *expr;
const char *expr_err = NULL;
/* hack. Prefix a " if it is a msg; as that is what
* http_protocol.c relies on to distinguish between
* a msg and a (local) path.
*/
const char *response =
(what == MSG) ? apr_pstrcat(cmd->pool, "\"", msg, NULL) :
apr_pstrdup(cmd->pool, msg);
expr = ap_expr_parse_cmd(cmd, response, AP_EXPR_FLAG_STRING_RESULT,
&expr_err, NULL);
if (expr_err) {
return apr_pstrcat(cmd->temp_pool,
"Cannot parse expression in ErrorDocument: ",
expr_err, NULL);
}
apr_hash_set(conf->response_code_exprs,
apr_pmemdup(cmd->pool, &index_number, sizeof(index_number)),
sizeof(index_number), expr);
}
}
return NULL;
}
static const char *set_allow_opts(cmd_parms *cmd, allow_options_t *opts,
const char *l)
{
allow_options_t opt;
int first = 1;
char *w, *p = (char *) l;
char *tok_state;
while ((w = apr_strtok(p, ",", &tok_state)) != NULL) {
if (first) {
p = NULL;
*opts = OPT_NONE;
first = 0;
}
if (!ap_cstr_casecmp(w, "Indexes")) {
opt = OPT_INDEXES;
}
else if (!ap_cstr_casecmp(w, "Includes")) {
/* If Includes is permitted, both Includes and
* IncludesNOEXEC may be changed. */
opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
}
else if (!ap_cstr_casecmp(w, "IncludesNOEXEC")) {
opt = OPT_INCLUDES;
}
else if (!ap_cstr_casecmp(w, "FollowSymLinks")) {
opt = OPT_SYM_LINKS;
}
else if (!ap_cstr_casecmp(w, "SymLinksIfOwnerMatch")) {
opt = OPT_SYM_OWNER;
}
else if (!ap_cstr_casecmp(w, "ExecCGI")) {
opt = OPT_EXECCGI;
}
else if (!ap_cstr_casecmp(w, "MultiViews")) {
opt = OPT_MULTI;
}
else if (!ap_cstr_casecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
opt = OPT_MULTI|OPT_EXECCGI;
}
else if (!ap_cstr_casecmp(w, "None")) {
opt = OPT_NONE;
}
else if (!ap_cstr_casecmp(w, "All")) {
opt = OPT_ALL;
}
else {
return apr_pstrcat(cmd->pool, "Illegal option ", w, NULL);
}
*opts |= opt;
}
(*opts) &= (~OPT_UNSET);
return NULL;
}
static const char *set_override(cmd_parms *cmd, void *d_, const char *l)
{
core_dir_config *d = d_;
char *w;
char *k, *v;
const char *err;
/* Throw a warning if we're in <Location> or <Files> */
if (ap_check_cmd_context(cmd, NOT_IN_LOCATION | NOT_IN_FILES)) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00114)
"Useless use of AllowOverride in line %d of %s.",
cmd->directive->line_num, cmd->directive->filename);
}
if ((err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS)) != NULL)
return err;
d->override = OR_NONE;
while (l[0]) {
w = ap_getword_conf(cmd->temp_pool, &l);
k = w;
v = strchr(k, '=');
if (v) {
*v++ = '\0';
}
if (!ap_cstr_casecmp(w, "Limit")) {
d->override |= OR_LIMIT;
}
else if (!ap_cstr_casecmp(k, "Options")) {
d->override |= OR_OPTIONS;
if (v)
set_allow_opts(cmd, &(d->override_opts), v);
else
d->override_opts = OPT_ALL;
}
else if (!ap_cstr_casecmp(w, "FileInfo")) {
d->override |= OR_FILEINFO;
}
else if (!ap_cstr_casecmp(w, "AuthConfig")) {
d->override |= OR_AUTHCFG;
}
else if (!ap_cstr_casecmp(w, "Indexes")) {
d->override |= OR_INDEXES;
}
else if (!ap_cstr_casecmp(w, "Nonfatal")) {
if (!v) {
return apr_pstrcat(cmd->pool, "=Override, =Unknown or =All expected after ", w, NULL);
}
else if (!ap_cstr_casecmp(v, "Override")) {
d->override |= NONFATAL_OVERRIDE;
}
else if (!ap_cstr_casecmp(v, "Unknown")) {
d->override |= NONFATAL_UNKNOWN;
}
else if (!ap_cstr_casecmp(v, "All")) {
d->override |= NONFATAL_ALL;
}
}
else if (!ap_cstr_casecmp(w, "None")) {
d->override = OR_NONE;
}
else if (!ap_cstr_casecmp(w, "All")) {
d->override = OR_ALL;
}
else {
return apr_pstrcat(cmd->pool, "Illegal override option ", w, NULL);
}
d->override &= ~OR_UNSET;
}
return NULL;
}
static const char *set_cgi_pass_auth(cmd_parms *cmd, void *d_, int flag)
{
core_dir_config *d = d_;
d->cgi_pass_auth = flag ? AP_CGI_PASS_AUTH_ON : AP_CGI_PASS_AUTH_OFF;
return NULL;
}
static const char *set_cgi_var(cmd_parms *cmd, void *d_,
const char *var, const char *rule_)
{
core_dir_config *d = d_;
char *rule = apr_pstrdup(cmd->pool, rule_);
ap_str_tolower(rule);
if (!strcmp(var, "REQUEST_URI")) {
if (strcmp(rule, "current-uri") && strcmp(rule, "original-uri")) {
return "Valid rules for REQUEST_URI are 'current-uri' and 'original-uri'";
}
}
else {
return apr_pstrcat(cmd->pool, "Unrecognized CGI variable: \"",
var, "\"", NULL);
}
if (!d->cgi_var_rules) {
d->cgi_var_rules = apr_hash_make(cmd->pool);
}
apr_hash_set(d->cgi_var_rules, var, APR_HASH_KEY_STRING, rule);
return NULL;
}
static const char *set_qualify_redirect_url(cmd_parms *cmd, void *d_, int flag)
{
core_dir_config *d = d_;
d->qualify_redirect_url = flag ? AP_CORE_CONFIG_ON : AP_CORE_CONFIG_OFF;
return NULL;
}
static const char *set_core_server_flag(cmd_parms *cmd, void *s_, int flag)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
return ap_set_flag_slot(cmd, conf, flag);
}
static const char *set_override_list(cmd_parms *cmd, void *d_, int argc, char *const argv[])
{
core_dir_config *d = d_;
int i;
const char *err;
/* Throw a warning if we're in <Location> or <Files> */
if (ap_check_cmd_context(cmd, NOT_IN_LOCATION | NOT_IN_FILES)) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00115)
"Useless use of AllowOverrideList at %s:%d",
cmd->directive->filename, cmd->directive->line_num);
}
if ((err = ap_check_cmd_context(cmd, NOT_IN_HTACCESS)) != NULL)
return err;
d->override_list = apr_table_make(cmd->pool, argc);
for (i = 0; i < argc; i++) {
if (!ap_cstr_casecmp(argv[i], "None")) {
if (argc != 1) {
return "'None' not allowed with other directives in "
"AllowOverrideList";
}
return NULL;
}
else {
const command_rec *result = NULL;
module *mod = ap_top_module;
result = ap_find_command_in_modules(argv[i], &mod);
if (result == NULL) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server,
APLOGNO(00116) "Discarding unrecognized "
"directive `%s' in AllowOverrideList at %s:%d",
argv[i], cmd->directive->filename,
cmd->directive->line_num);
continue;
}
else if ((result->req_override & (OR_ALL|ACCESS_CONF)) == 0) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server,
APLOGNO(02304) "Discarding directive `%s' not "
"allowed in AllowOverrideList at %s:%d",
argv[i], cmd->directive->filename,
cmd->directive->line_num);
continue;
}
else {
apr_table_setn(d->override_list, argv[i], "1");
}
}
}
return NULL;
}
static const char *set_options(cmd_parms *cmd, void *d_, const char *l)
{
core_dir_config *d = d_;
allow_options_t opt;
int first = 1;
int merge = 0;
int all_none = 0;
char action;
while (l[0]) {
char *w = ap_getword_conf(cmd->temp_pool, &l);
action = '\0';
if (*w == '+' || *w == '-') {
action = *(w++);
if (!merge && !first && !all_none) {
return "Either all Options must start with + or -, or no Option may.";
}
merge = 1;
}
else if (first) {
d->opts = OPT_NONE;
}
else if (merge) {
return "Either all Options must start with + or -, or no Option may.";
}
if (!ap_cstr_casecmp(w, "Indexes")) {
opt = OPT_INDEXES;
}
else if (!ap_cstr_casecmp(w, "Includes")) {
opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
}
else if (!ap_cstr_casecmp(w, "IncludesNOEXEC")) {
opt = OPT_INCLUDES;
}
else if (!ap_cstr_casecmp(w, "FollowSymLinks")) {
opt = OPT_SYM_LINKS;
}
else if (!ap_cstr_casecmp(w, "SymLinksIfOwnerMatch")) {
opt = OPT_SYM_OWNER;
}
else if (!ap_cstr_casecmp(w, "ExecCGI")) {
opt = OPT_EXECCGI;
}
else if (!ap_cstr_casecmp(w, "MultiViews")) {
opt = OPT_MULTI;
}
else if (!ap_cstr_casecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
opt = OPT_MULTI|OPT_EXECCGI;
}
else if (!ap_cstr_casecmp(w, "None")) {
if (!first) {
return "'Options None' must be the first Option given.";
}
else if (merge) { /* Only works since None may not follow any other option. */
return "You may not use 'Options +None' or 'Options -None'.";
}
opt = OPT_NONE;
all_none = 1;
}
else if (!ap_cstr_casecmp(w, "All")) {
if (!first) {
return "'Options All' must be the first option given.";
}
else if (merge) { /* Only works since All may not follow any other option. */
return "You may not use 'Options +All' or 'Options -All'.";
}
opt = OPT_ALL;
all_none = 1;
}
else {
return apr_pstrcat(cmd->pool, "Illegal option ", w, NULL);
}
if ( (cmd->override_opts & opt) != opt ) {
return apr_pstrcat(cmd->pool, "Option ", w, " not allowed here", NULL);
}
else if (action == '-') {
/* we ensure the invariant (d->opts_add & d->opts_remove) == 0 */
d->opts_remove |= opt;
d->opts_add &= ~opt;
d->opts &= ~opt;
}
else if (action == '+') {
d->opts_add |= opt;
d->opts_remove &= ~opt;
d->opts |= opt;
}
else {
d->opts |= opt;
}
first = 0;
}
return NULL;
}
static const char *set_default_type(cmd_parms *cmd, void *d_,
const char *arg)
{
if ((ap_cstr_casecmp(arg, "off") != 0) && (ap_cstr_casecmp(arg, "none") != 0)) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00117)
"Ignoring deprecated use of DefaultType in line %d of %s.",
cmd->directive->line_num, cmd->directive->filename);
}
return NULL;
}
static const char *set_sethandler(cmd_parms *cmd,
void *d_,
const char *arg_)
{
core_dir_config *dirconf = d_;
const char *err;
dirconf->expr_handler = ap_expr_parse_cmd(cmd, arg_,
AP_EXPR_FLAG_STRING_RESULT,
&err, NULL);
if (err) {
return apr_pstrcat(cmd->pool,
"Can't parse expression : ", err, NULL);
}
return NULL;
}
/*
* Note what data should be used when forming file ETag values.
* It would be nicer to do this as an ITERATE, but then we couldn't
* remember the +/- state properly.
*/
static const char *set_etag_bits(cmd_parms *cmd, void *mconfig,
const char *args_p)
{
core_dir_config *cfg;
etag_components_t bit;
char action;
char *token;
const char *args;
int valid;
int first;
int explicit;
cfg = (core_dir_config *)mconfig;
args = args_p;
first = 1;
explicit = 0;
while (args[0] != '\0') {
action = '*';
bit = ETAG_UNSET;
valid = 1;
token = ap_getword_conf(cmd->temp_pool, &args);
if ((*token == '+') || (*token == '-')) {
action = *token;
token++;
}
else {
/*
* The occurrence of an absolute setting wipes
* out any previous relative ones. The first such
* occurrence forgets any inherited ones, too.
*/
if (first) {
cfg->etag_bits = ETAG_UNSET;
cfg->etag_add = ETAG_UNSET;
cfg->etag_remove = ETAG_UNSET;
first = 0;
}
}
if (ap_cstr_casecmp(token, "None") == 0) {
if (action != '*') {
valid = 0;
}
else {
cfg->etag_bits = bit = ETAG_NONE;
explicit = 1;
}
}
else if (ap_cstr_casecmp(token, "All") == 0) {
if (action != '*') {
valid = 0;
}
else {
explicit = 1;
cfg->etag_bits = bit = ETAG_ALL;
}
}
else if (ap_cstr_casecmp(token, "Size") == 0) {
bit = ETAG_SIZE;
}
else if ((ap_cstr_casecmp(token, "LMTime") == 0)
|| (ap_cstr_casecmp(token, "MTime") == 0)
|| (ap_cstr_casecmp(token, "LastModified") == 0)) {
bit = ETAG_MTIME;
}
else if (ap_cstr_casecmp(token, "INode") == 0) {
bit = ETAG_INODE;
}
else if (ap_cstr_casecmp(token, "Digest") == 0) {
bit = ETAG_DIGEST;
}
else {
return apr_pstrcat(cmd->pool, "Unknown keyword '",
token, "' for ", cmd->cmd->name,
" directive", NULL);
}
if (! valid) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, " keyword '",
token, "' cannot be used with '+' or '-'",
NULL);
}
if (action == '+') {
/*
* Make sure it's in the 'add' list and absent from the
* 'subtract' list.
*/
cfg->etag_add |= bit;
cfg->etag_remove &= (~ bit);
}
else if (action == '-') {
cfg->etag_remove |= bit;
cfg->etag_add &= (~ bit);
}
else {
/*
* Non-relative values wipe out any + or - values
* accumulated so far.
*/
cfg->etag_bits |= bit;
cfg->etag_add = ETAG_UNSET;
cfg->etag_remove = ETAG_UNSET;
explicit = 1;
}
}
/*
* Any setting at all will clear the 'None' and 'Unset' bits.
*/
if (cfg->etag_add != ETAG_UNSET) {
cfg->etag_add &= (~ ETAG_UNSET);
}
if (cfg->etag_remove != ETAG_UNSET) {
cfg->etag_remove &= (~ ETAG_UNSET);
}
if (explicit) {
cfg->etag_bits &= (~ ETAG_UNSET);
if ((cfg->etag_bits & ETAG_NONE) != ETAG_NONE) {
cfg->etag_bits &= (~ ETAG_NONE);
}
}
return NULL;
}
static const char *set_enable_mmap(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "on") == 0) {
d->enable_mmap = ENABLE_MMAP_ON;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
d->enable_mmap = ENABLE_MMAP_OFF;
}
else {
return "parameter must be 'on' or 'off'";
}
return NULL;
}
static const char *set_enable_sendfile(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "on") == 0) {
d->enable_sendfile = ENABLE_SENDFILE_ON;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
d->enable_sendfile = ENABLE_SENDFILE_OFF;
}
else {
return "parameter must be 'on' or 'off'";
}
return NULL;
}
static const char *set_read_buf_size(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
apr_off_t size;
char *end;
if (apr_strtoff(&size, arg, &end, 10)
|| *end || size < 0 || size > APR_UINT32_MAX)
return apr_pstrcat(cmd->pool,
"parameter must be a number between 0 and "
APR_STRINGIFY(APR_UINT32_MAX) "): ",
arg, NULL);
d->read_buf_size = (apr_size_t)size;
return NULL;
}
static const char *set_flush_max_threshold(cmd_parms *cmd, void *d_,
const char *arg)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
apr_off_t size;
char *end;
if (apr_strtoff(&size, arg, &end, 10)
|| *end || size < 0 || size > APR_UINT32_MAX)
return apr_pstrcat(cmd->pool,
"parameter must be a number between 0 and "
APR_STRINGIFY(APR_UINT32_MAX) "): ",
arg, NULL);
conf->flush_max_threshold = (apr_size_t)size;
return NULL;
}
static const char *set_flush_max_pipelined(cmd_parms *cmd, void *d_,
const char *arg)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
apr_off_t num;
char *end;
if (apr_strtoff(&num, arg, &end, 10)
|| *end || num < -1 || num > APR_INT32_MAX)
return apr_pstrcat(cmd->pool,
"parameter must be a number between -1 and "
APR_STRINGIFY(APR_INT32_MAX) ": ",
arg, NULL);
conf->flush_max_pipelined = (apr_int32_t)num;
return NULL;
}
/*
* Report a missing-'>' syntax error.
*/
static char *unclosed_directive(cmd_parms *cmd)
{
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive missing closing '>'", NULL);
}
/*
* Report a missing args in '<Foo >' syntax error.
*/
static char *missing_container_arg(cmd_parms *cmd)
{
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive requires additional arguments", NULL);
}
AP_CORE_DECLARE_NONSTD(const char *) ap_limit_section(cmd_parms *cmd,
void *dummy,
const char *arg)
{
const char *endp = ap_strrchr_c(arg, '>');
const char *limited_methods;
void *tog = cmd->cmd->cmd_data;
apr_int64_t limited = 0;
apr_int64_t old_limited = cmd->limited;
const char *errmsg;
if (endp == NULL) {
return unclosed_directive(cmd);
}
limited_methods = apr_pstrmemdup(cmd->temp_pool, arg, endp - arg);
if (!limited_methods[0]) {
return missing_container_arg(cmd);
}
while (limited_methods[0]) {
char *method = ap_getword_conf(cmd->temp_pool, &limited_methods);
int methnum;
/* check for builtin or module registered method number */
methnum = ap_method_number_of(method);
if (methnum == M_TRACE && !tog) {
return "TRACE cannot be controlled by <Limit>, see TraceEnable";
}
else if (methnum == M_INVALID) {
/* method has not been registered yet, but resource restriction
* is always checked before method handling, so register it.
*/
if (cmd->pool == cmd->temp_pool) {
/* In .htaccess, we can't globally register new methods. */
return apr_psprintf(cmd->pool, "Could not register method '%s' "
"for %s from .htaccess configuration",
method, cmd->cmd->name);
}
methnum = ap_method_register(cmd->pool,
apr_pstrdup(cmd->pool, method));
}
limited |= (AP_METHOD_BIT << methnum);
}
/* Killing two features with one function,
* if (tog == NULL) <Limit>, else <LimitExcept>
*/
limited = tog ? ~limited : limited;
if (!(old_limited & limited)) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive excludes all methods", NULL);
}
else if ((old_limited & limited) == old_limited) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive specifies methods already excluded",
NULL);
}
cmd->limited &= limited;
errmsg = ap_walk_config(cmd->directive->first_child, cmd, cmd->context);
cmd->limited = old_limited;
return errmsg;
}
/* XXX: Bogus - need to do this differently (at least OS2/Netware suffer
* the same problem!!!
* We use this in <DirectoryMatch> and <FilesMatch>, to ensure that
* people don't get bitten by wrong-cased regex matches
*/
#ifdef WIN32
#define USE_ICASE AP_REG_ICASE
#else
#define USE_ICASE 0
#endif
static const char *dirsection(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *errmsg;
const char *endp = ap_strrchr_c(arg, '>');
int old_overrides = cmd->override;
char *old_path = cmd->path;
core_dir_config *conf;
ap_conf_vector_t *new_dir_conf = ap_create_per_dir_config(cmd->pool);
ap_regex_t *r = NULL;
const command_rec *thiscmd = cmd->cmd;
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (!arg[0]) {
return missing_container_arg(cmd);
}
cmd->path = ap_getword_conf(cmd->pool, &arg);
cmd->override = OR_ALL|ACCESS_CONF;
if (!strcmp(cmd->path, "~")) {
cmd->path = ap_getword_conf(cmd->pool, &arg);
if (!cmd->path)
return "<Directory ~ > block must specify a path";
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
if (!r) {
return "Regex could not be compiled";
}
}
else if (thiscmd->cmd_data) { /* <DirectoryMatch> */
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
if (!r) {
return "Regex could not be compiled";
}
}
else if (strcmp(cmd->path, "/") != 0)
{
char *newpath;
/*
* Ensure that the pathname is canonical, and append the trailing /
*/
apr_status_t rv = apr_filepath_merge(&newpath, NULL, cmd->path,
APR_FILEPATH_TRUENAME, cmd->pool);
if (rv != APR_SUCCESS && rv != APR_EPATHWILD) {
return apr_pstrcat(cmd->pool, "<Directory \"", cmd->path,
"\"> path is invalid.", NULL);
}
cmd->path = newpath;
if (cmd->path[strlen(cmd->path) - 1] != '/')
cmd->path = apr_pstrcat(cmd->pool, cmd->path, "/", NULL);
}
/* initialize our config and fetch it */
conf = ap_set_config_vectors(cmd->server, new_dir_conf, cmd->path,
&core_module, cmd->pool);
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf);
if (errmsg != NULL)
return errmsg;
conf->r = r;
conf->d = cmd->path;
conf->d_is_fnmatch = (apr_fnmatch_test(conf->d) != 0);
if (r) {
conf->refs = apr_array_make(cmd->pool, 8, sizeof(char *));
ap_regname(r, conf->refs, AP_REG_MATCH, 1);
}
/* Make this explicit - the "/" root has 0 elements, that is, we
* will always merge it, and it will always sort and merge first.
* All others are sorted and tested by the number of slashes.
*/
if (strcmp(conf->d, "/") == 0)
conf->d_components = 0;
else
conf->d_components = ap_count_dirs(conf->d);
ap_add_per_dir_conf(cmd->server, new_dir_conf);
if (*arg != '\0') {
return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
"> arguments not (yet) supported.", NULL);
}
cmd->path = old_path;
cmd->override = old_overrides;
return NULL;
}
static const char *urlsection(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *errmsg;
const char *endp = ap_strrchr_c(arg, '>');
int old_overrides = cmd->override;
char *old_path = cmd->path;
core_dir_config *conf;
ap_regex_t *r = NULL;
const command_rec *thiscmd = cmd->cmd;
ap_conf_vector_t *new_url_conf = ap_create_per_dir_config(cmd->pool);
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (!arg[0]) {
return missing_container_arg(cmd);
}
cmd->path = ap_getword_conf(cmd->pool, &arg);
cmd->override = OR_ALL|ACCESS_CONF;
if (thiscmd->cmd_data) { /* <LocationMatch> */
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
if (!r) {
return "Regex could not be compiled";
}
}
else if (!strcmp(cmd->path, "~")) {
cmd->path = ap_getword_conf(cmd->pool, &arg);
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED);
if (!r) {
return "Regex could not be compiled";
}
}
/* initialize our config and fetch it */
conf = ap_set_config_vectors(cmd->server, new_url_conf, cmd->path,
&core_module, cmd->pool);
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_url_conf);
if (errmsg != NULL)
return errmsg;
conf->d = apr_pstrdup(cmd->pool, cmd->path); /* No mangling, please */
conf->d_is_fnmatch = apr_fnmatch_test(conf->d) != 0;
conf->r = r;
if (r) {
conf->refs = apr_array_make(cmd->pool, 8, sizeof(char *));
ap_regname(r, conf->refs, AP_REG_MATCH, 1);
}
ap_add_per_url_conf(cmd->server, new_url_conf);
if (*arg != '\0') {
return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
"> arguments not (yet) supported.", NULL);
}
cmd->path = old_path;
cmd->override = old_overrides;
return NULL;
}
static const char *filesection(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *errmsg;
const char *endp = ap_strrchr_c(arg, '>');
int old_overrides = cmd->override;
char *old_path = cmd->path;
core_dir_config *conf;
ap_regex_t *r = NULL;
const command_rec *thiscmd = cmd->cmd;
ap_conf_vector_t *new_file_conf = ap_create_per_dir_config(cmd->pool);
const char *err = ap_check_cmd_context(cmd,
NOT_IN_LOCATION | NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (!arg[0]) {
return missing_container_arg(cmd);
}
cmd->path = ap_getword_conf(cmd->pool, &arg);
/* Only if not an .htaccess file */
if (!old_path) {
cmd->override = OR_ALL|ACCESS_CONF;
}
if (thiscmd->cmd_data) { /* <FilesMatch> */
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
if (!r) {
return "Regex could not be compiled";
}
}
else if (!strcmp(cmd->path, "~")) {
cmd->path = ap_getword_conf(cmd->pool, &arg);
r = ap_pregcomp(cmd->pool, cmd->path, AP_REG_EXTENDED|USE_ICASE);
if (!r) {
return "Regex could not be compiled";
}
}
else {
char *newpath;
/* Ensure that the pathname is canonical, but we
* can't test the case/aliases without a fixed path */
if (apr_filepath_merge(&newpath, "", cmd->path,
0, cmd->pool) != APR_SUCCESS)
return apr_pstrcat(cmd->pool, "<Files \"", cmd->path,
"\"> is invalid.", NULL);
cmd->path = newpath;
}
/* initialize our config and fetch it */
conf = ap_set_config_vectors(cmd->server, new_file_conf, cmd->path,
&core_module, cmd->pool);
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_file_conf);
if (errmsg != NULL)
return errmsg;
conf->d = cmd->path;
conf->d_is_fnmatch = apr_fnmatch_test(conf->d) != 0;
conf->r = r;
if (r) {
conf->refs = apr_array_make(cmd->pool, 8, sizeof(char *));
ap_regname(r, conf->refs, AP_REG_MATCH, 1);
}
ap_add_file_conf(cmd->pool, (core_dir_config *)mconfig, new_file_conf);
if (*arg != '\0') {
return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
"> arguments not (yet) supported.", NULL);
}
cmd->path = old_path;
cmd->override = old_overrides;
return NULL;
}
#define COND_IF ((void *)1)
#define COND_ELSE ((void *)2)
#define COND_ELSEIF ((void *)3)
static const char *ifsection(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *errmsg;
const char *endp = ap_strrchr_c(arg, '>');
int old_overrides = cmd->override;
char *old_path = cmd->path;
core_dir_config *conf;
const command_rec *thiscmd = cmd->cmd;
ap_conf_vector_t *new_if_conf = ap_create_per_dir_config(cmd->pool);
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
const char *condition;
const char *expr_err;
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
/*
* Set a dummy value so that other directives notice that they are inside
* a config section.
*/
cmd->path = "*If";
/* Only if not an .htaccess file */
if (!old_path) {
cmd->override = OR_ALL|ACCESS_CONF;
}
/* initialize our config and fetch it */
conf = ap_set_config_vectors(cmd->server, new_if_conf, cmd->path,
&core_module, cmd->pool);
if (cmd->cmd->cmd_data == COND_IF)
conf->condition_ifelse = AP_CONDITION_IF;
else if (cmd->cmd->cmd_data == COND_ELSEIF)
conf->condition_ifelse = AP_CONDITION_ELSEIF;
else if (cmd->cmd->cmd_data == COND_ELSE)
conf->condition_ifelse = AP_CONDITION_ELSE;
else
ap_assert(0);
if (conf->condition_ifelse == AP_CONDITION_ELSE) {
if (arg[0])
return "<Else> does not take an argument";
}
else {
if (!arg[0])
return missing_container_arg(cmd);
condition = ap_getword_conf(cmd->pool, &arg);
conf->condition = ap_expr_parse_cmd(cmd, condition, 0, &expr_err, NULL);
if (expr_err)
return apr_psprintf(cmd->pool, "Cannot parse condition clause: %s",
expr_err);
}
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_if_conf);
if (errmsg != NULL)
return errmsg;
conf->d = cmd->path;
conf->d_is_fnmatch = 0;
conf->r = NULL;
errmsg = ap_add_if_conf(cmd->pool, (core_dir_config *)mconfig, new_if_conf);
if (errmsg != NULL)
return errmsg;
if (*arg != '\0') {
return apr_pstrcat(cmd->pool, "Multiple ", thiscmd->name,
"> arguments not supported.", NULL);
}
cmd->path = old_path;
cmd->override = old_overrides;
return NULL;
}
static module *find_module(server_rec *s, const char *name)
{
module *found = ap_find_linked_module(name);
/* search prelinked stuff */
if (!found) {
ap_module_symbol_t *current = ap_prelinked_module_symbols;
for (; current->name; ++current) {
if (!strcmp(current->name, name)) {
found = current->modp;
break;
}
}
}
/* search dynamic stuff */
if (!found) {
APR_OPTIONAL_FN_TYPE(ap_find_loaded_module_symbol) *check_symbol =
APR_RETRIEVE_OPTIONAL_FN(ap_find_loaded_module_symbol);
if (check_symbol) {
/*
* There are two phases where calling ap_find_loaded_module_symbol
* is problematic:
*
* During reading of the config, ap_server_conf is invalid but s
* points to the main server config, if passed from cmd->server
* of an EXEC_ON_READ directive.
*
* During config parsing, s may be a virtual host that would cause
* a segfault in mod_so if passed to ap_find_loaded_module_symbol,
* because mod_so's server config for vhosts is initialized later.
* But ap_server_conf is already set at this time.
*
* Therefore we use s if it is not virtual and ap_server_conf if
* s is virtual.
*/
found = check_symbol(s->is_virtual ? ap_server_conf : s, name);
}
}
return found;
}
/* Callback function type used by start_cond_section. */
typedef int (*test_cond_section_fn)(cmd_parms *cmd, const char *arg);
/* Implementation of <IfXXXXX>-style conditional sections. Callback
* to test condition must be in cmd->info, matching function type
* test_cond_section_fn. */
static const char *start_cond_section(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *endp = ap_strrchr_c(arg, '>');
int result, not = (arg[0] == '!');
test_cond_section_fn testfn = (test_cond_section_fn)cmd->info;
const char *arg1;
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrmemdup(cmd->temp_pool, arg, endp - arg);
if (not) {
arg++;
}
arg1 = ap_getword_conf(cmd->temp_pool, &arg);
if (!arg1[0]) {
return missing_container_arg(cmd);
}
result = testfn(cmd, arg1);
if ((!not && result) || (not && !result)) {
ap_directive_t *parent = NULL;
ap_directive_t *current = NULL;
const char *retval;
retval = ap_build_cont_config(cmd->pool, cmd->temp_pool, cmd,
&current, &parent, (char *)cmd->cmd->name);
*(ap_directive_t **)mconfig = current;
return retval;
}
else {
*(ap_directive_t **)mconfig = NULL;
return ap_soak_end_container(cmd, (char *)cmd->cmd->name);
}
}
/* Callback to implement <IfModule> test for start_cond_section. */
static int test_ifmod_section(cmd_parms *cmd, const char *arg)
{
return find_module(cmd->server, arg) != NULL;
}
AP_DECLARE(int) ap_exists_config_define(const char *name)
{
return ap_array_str_contains(ap_server_config_defines, name);
}
static int test_ifdefine_section(cmd_parms *cmd, const char *arg)
{
return ap_exists_config_define(arg);
}
static int test_iffile_section(cmd_parms *cmd, const char *arg)
{
const char *relative;
apr_finfo_t sb;
/*
* At least on Windows, if the path we are testing is not valid (for example
* a path on a USB key that is not plugged), 'ap_server_root_relative()' will
* return NULL. In such a case, consider that the file is not there and that
* the section should be skipped.
*/
relative = ap_server_root_relative(cmd->temp_pool, arg);
return (relative &&
(apr_stat(&sb, relative, APR_FINFO_TYPE, cmd->temp_pool) == APR_SUCCESS));
}
static int test_ifdirective_section(cmd_parms *cmd, const char *arg)
{
return ap_exists_directive(cmd->temp_pool, arg);
}
static int test_ifsection_section(cmd_parms *cmd, const char *arg)
{
const char *name = apr_pstrcat(cmd->temp_pool, "<", arg, NULL);
return ap_exists_directive(cmd->temp_pool, name);
}
/* httpd.conf commands... beginning with the <VirtualHost> business */
static const char *virtualhost_section(cmd_parms *cmd, void *dummy,
const char *arg)
{
server_rec *main_server = cmd->server, *s;
const char *errmsg;
const char *endp = ap_strrchr_c(arg, '>');
apr_pool_t *p = cmd->pool;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (!arg[0]) {
return missing_container_arg(cmd);
}
/* FIXME: There's another feature waiting to happen here -- since you
can now put multiple addresses/names on a single <VirtualHost>
you might want to use it to group common definitions and then
define other "subhosts" with their individual differences. But
personally I'd rather just do it with a macro preprocessor. -djg */
if (main_server->is_virtual) {
return "<VirtualHost> doesn't nest!";
}
errmsg = ap_init_virtual_host(p, arg, main_server, &s);
if (errmsg) {
return errmsg;
}
s->next = main_server->next;
main_server->next = s;
s->defn_name = cmd->directive->filename;
s->defn_line_number = cmd->directive->line_num;
cmd->server = s;
errmsg = ap_walk_config(cmd->directive->first_child, cmd,
s->lookup_defaults);
cmd->server = main_server;
return errmsg;
}
static const char *set_regex_default_options(cmd_parms *cmd,
void *dummy,
const char *arg)
{
const command_rec *thiscmd = cmd->cmd;
int cflags, cflag;
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
cflags = ap_regcomp_get_default_cflags();
while (*arg) {
const char *name = ap_getword_conf(cmd->pool, &arg);
int how = 0;
if (strcasecmp(name, "none") == 0) {
cflags = 0;
continue;
}
if (*name == '+') {
name++;
how = +1;
}
else if (*name == '-') {
name++;
how = -1;
}
cflag = ap_regcomp_default_cflag_by_name(name);
if (!cflag) {
return apr_psprintf(cmd->pool, "%s: option '%s' unknown",
thiscmd->name, name);
}
if (how > 0) {
cflags |= cflag;
}
else if (how < 0) {
cflags &= ~cflag;
}
else {
cflags = cflag;
}
}
ap_regcomp_set_default_cflags(cflags);
return NULL;
}
static const char *set_server_alias(cmd_parms *cmd, void *dummy,
const char *arg)
{
if (!cmd->server->names) {
return "ServerAlias only used in <VirtualHost>";
}
while (*arg) {
char **item, *name = ap_getword_conf(cmd->pool, &arg);
if (ap_is_matchexp(name)) {
item = (char **)apr_array_push(cmd->server->wild_names);
}
else {
item = (char **)apr_array_push(cmd->server->names);
}
*item = name;
}
return NULL;
}
static const char *set_accf_map(cmd_parms *cmd, void *dummy,
const char *iproto, const char* iaccf)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
char* proto;
char* accf;
if (err != NULL) {
return err;
}
proto = apr_pstrdup(cmd->pool, iproto);
ap_str_tolower(proto);
accf = apr_pstrdup(cmd->pool, iaccf);
ap_str_tolower(accf);
apr_table_setn(conf->accf_map, proto, accf);
return NULL;
}
AP_DECLARE(const char*) ap_get_server_protocol(server_rec* s)
{
core_server_config *conf = ap_get_core_module_config(s->module_config);
return conf->protocol;
}
AP_DECLARE(void) ap_set_server_protocol(server_rec* s, const char* proto)
{
core_server_config *conf = ap_get_core_module_config(s->module_config);
conf->protocol = proto;
}
static const char *set_protocol(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
char* proto;
if (err != NULL) {
return err;
}
proto = apr_pstrdup(cmd->pool, arg);
ap_str_tolower(proto);
conf->protocol = proto;
return NULL;
}
static const char *set_server_string_slot(cmd_parms *cmd, void *dummy,
const char *arg)
{
/* This one's pretty generic... */
int offset = (int)(long)cmd->info;
char *struct_ptr = (char *)cmd->server;
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
*(const char **)(struct_ptr + offset) = arg;
return NULL;
}
/*
* The ServerName directive takes one argument with format
* [scheme://]fully-qualified-domain-name[:port], for instance
* ServerName www.example.com
* ServerName www.example.com:80
* ServerName https://www.example.com:443
*/
static const char *server_hostname_port(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
const char *portstr, *part;
char *scheme;
int port;
if (err != NULL) {
return err;
}
if (apr_fnmatch_test(arg))
return apr_pstrcat(cmd->temp_pool, "Invalid ServerName \"", arg,
"\" use ServerAlias to set multiple server names.", NULL);
part = ap_strstr_c(arg, "://");
if (part) {
scheme = apr_pstrndup(cmd->pool, arg, part - arg);
ap_str_tolower(scheme);
cmd->server->server_scheme = (const char *)scheme;
part += 3;
} else {
part = arg;
}
portstr = ap_strchr_c(part, ':');
if (portstr) {
cmd->server->server_hostname = apr_pstrndup(cmd->pool, part,
portstr - part);
portstr++;
port = atoi(portstr);
if (port <= 0 || port >= 65536) { /* 65536 == 1<<16 */
return apr_pstrcat(cmd->temp_pool, "The port number \"", arg,
"\" is outside the appropriate range "
"(i.e., 1..65535).", NULL);
}
}
else {
cmd->server->server_hostname = apr_pstrdup(cmd->pool, part);
port = 0;
}
cmd->server->port = port;
return NULL;
}
static const char *set_signature_flag(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "On") == 0) {
d->server_signature = srv_sig_on;
}
else if (ap_cstr_casecmp(arg, "Off") == 0) {
d->server_signature = srv_sig_off;
}
else if (ap_cstr_casecmp(arg, "EMail") == 0) {
d->server_signature = srv_sig_withmail;
}
else {
return "ServerSignature: use one of: off | on | email";
}
return NULL;
}
static const char *set_server_root(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if ((apr_filepath_merge((char**)&ap_server_root, NULL, arg,
APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS)
|| !ap_is_directory(cmd->temp_pool, ap_server_root)) {
return "ServerRoot must be a valid directory";
}
return NULL;
}
static const char *set_runtime_dir(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if ((apr_filepath_merge((char**)&ap_runtime_dir, NULL,
ap_server_root_relative(cmd->temp_pool, arg),
APR_FILEPATH_TRUENAME, cmd->pool) != APR_SUCCESS)
|| !ap_is_directory(cmd->temp_pool, ap_runtime_dir)) {
return "DefaultRuntimeDir must be a valid directory, absolute or relative to ServerRoot";
}
return NULL;
}
static const char *set_timeout(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
cmd->server->timeout = apr_time_from_sec(atoi(arg));
return NULL;
}
static const char *set_allow2f(cmd_parms *cmd, void *d_, const char *arg)
{
core_dir_config *d = d_;
if (0 == ap_cstr_casecmp(arg, "on")) {
d->allow_encoded_slashes = 1;
d->decode_encoded_slashes = 1; /* for compatibility with 2.0 & 2.2 */
} else if (0 == ap_cstr_casecmp(arg, "off")) {
d->allow_encoded_slashes = 0;
d->decode_encoded_slashes = 0;
} else if (0 == ap_cstr_casecmp(arg, "nodecode")) {
d->allow_encoded_slashes = 1;
d->decode_encoded_slashes = 0;
} else {
return apr_pstrcat(cmd->pool,
cmd->cmd->name, " must be On, Off, or NoDecode",
NULL);
}
return NULL;
}
static const char *set_hostname_lookups(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (!ap_cstr_casecmp(arg, "on")) {
d->hostname_lookups = HOSTNAME_LOOKUP_ON;
}
else if (!ap_cstr_casecmp(arg, "off")) {
d->hostname_lookups = HOSTNAME_LOOKUP_OFF;
}
else if (!ap_cstr_casecmp(arg, "double")) {
d->hostname_lookups = HOSTNAME_LOOKUP_DOUBLE;
}
else {
return "parameter must be 'on', 'off', or 'double'";
}
return NULL;
}
static const char *set_serverpath(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err != NULL) {
return err;
}
cmd->server->path = arg;
cmd->server->pathlen = (int)strlen(arg);
return NULL;
}
static const char *set_content_md5(cmd_parms *cmd, void *d_, int arg)
{
core_dir_config *d = d_;
d->content_md5 = arg ? AP_CONTENT_MD5_ON : AP_CONTENT_MD5_OFF;
return NULL;
}
static const char *set_accept_path_info(cmd_parms *cmd, void *d_, const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "on") == 0) {
d->accept_path_info = AP_REQ_ACCEPT_PATH_INFO;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
d->accept_path_info = AP_REQ_REJECT_PATH_INFO;
}
else if (ap_cstr_casecmp(arg, "default") == 0) {
d->accept_path_info = AP_REQ_DEFAULT_PATH_INFO;
}
else {
return "AcceptPathInfo must be set to on, off or default";
}
return NULL;
}
static const char *set_use_canonical_name(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "on") == 0) {
d->use_canonical_name = USE_CANONICAL_NAME_ON;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
d->use_canonical_name = USE_CANONICAL_NAME_OFF;
}
else if (ap_cstr_casecmp(arg, "dns") == 0) {
d->use_canonical_name = USE_CANONICAL_NAME_DNS;
}
else {
return "parameter must be 'on', 'off', or 'dns'";
}
return NULL;
}
static const char *set_use_canonical_phys_port(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
if (ap_cstr_casecmp(arg, "on") == 0) {
d->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_ON;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
d->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_OFF;
}
else {
return "parameter must be 'on' or 'off'";
}
return NULL;
}
static const char *include_config (cmd_parms *cmd, void *dummy,
const char *name)
{
ap_directive_t *conftree = NULL;
const char *conffile, *error;
unsigned *recursion;
int optional = cmd->cmd->cmd_data ? 1 : 0;
void *data;
/* NOTE: ap_include_sentinel is also used by ap_process_resource_config()
* during DUMP_INCLUDES; don't change its type or remove it without updating
* the other.
*/
apr_pool_userdata_get(&data, "ap_include_sentinel", cmd->pool);
if (data) {
recursion = data;
}
else {
data = recursion = apr_palloc(cmd->pool, sizeof(*recursion));
*recursion = 0;
apr_pool_userdata_setn(data, "ap_include_sentinel", NULL, cmd->pool);
}
if (++*recursion > AP_MAX_INCLUDE_DEPTH) {
*recursion = 0;
return apr_psprintf(cmd->pool, "Exceeded maximum include depth of %u, "
"There appears to be a recursion.",
AP_MAX_INCLUDE_DEPTH);
}
conffile = ap_server_root_relative(cmd->pool, name);
if (!conffile) {
*recursion = 0;
return apr_pstrcat(cmd->pool, "Invalid Include path ",
name, NULL);
}
if (ap_exists_config_define("DUMP_INCLUDES")) {
unsigned *line_number;
/* NOTE: ap_include_lineno is used by ap_process_resource_config()
* during DUMP_INCLUDES; don't change its type or remove it without
* updating the other.
*/
apr_pool_userdata_get(&data, "ap_include_lineno", cmd->pool);
if (data) {
line_number = data;
} else {
data = line_number = apr_palloc(cmd->pool, sizeof(*line_number));
apr_pool_userdata_setn(data, "ap_include_lineno", NULL, cmd->pool);
}
*line_number = cmd->config_file->line_number;
}
error = ap_process_fnmatch_configs(cmd->server, conffile, &conftree,
cmd->pool, cmd->temp_pool,
optional);
if (error) {
*recursion = 0;
return error;
}
*(ap_directive_t **)dummy = conftree;
/* recursion level done */
if (*recursion) {
--*recursion;
}
return NULL;
}
static const char *set_loglevel(cmd_parms *cmd, void *config_, const char *arg_)
{
char *level_str;
int level;
module *module;
char *arg = apr_pstrdup(cmd->temp_pool, arg_);
struct ap_logconf *log;
const char *err;
if (cmd->path) {
core_dir_config *dconf = config_;
if (!dconf->log) {
dconf->log = ap_new_log_config(cmd->pool, NULL);
}
log = dconf->log;
}
else {
log = &cmd->server->log;
}
if (arg == NULL)
return "LogLevel requires level keyword or module loglevel specifier";
level_str = ap_strrchr(arg, ':');
if (level_str == NULL) {
err = ap_parse_log_level(arg, &log->level);
if (err != NULL)
return err;
ap_reset_module_loglevels(log, APLOG_NO_MODULE);
ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, cmd->server,
"Setting LogLevel for all modules to %s", arg);
return NULL;
}
*level_str++ = '\0';
if (!*level_str) {
return apr_psprintf(cmd->temp_pool, "Module specifier '%s' must be "
"followed by a log level keyword", arg);
}
err = ap_parse_log_level(level_str, &level);
if (err != NULL)
return apr_psprintf(cmd->temp_pool, "%s:%s: %s", arg, level_str, err);
if ((module = find_module(cmd->server, arg)) == NULL) {
char *name = apr_psprintf(cmd->temp_pool, "%s_module", arg);
ap_log_error(APLOG_MARK, APLOG_TRACE6, 0, cmd->server,
"Cannot find module '%s', trying '%s'", arg, name);
module = find_module(cmd->server, name);
}
if (module == NULL) {
return apr_psprintf(cmd->temp_pool, "Cannot find module %s", arg);
}
ap_set_module_loglevel(cmd->pool, log, module->module_index, level);
ap_log_error(APLOG_MARK, APLOG_TRACE3, 0, cmd->server,
"Setting LogLevel for module %s to %s", module->name,
level_str);
return NULL;
}
AP_DECLARE(const char *) ap_psignature(const char *prefix, request_rec *r)
{
char sport[20];
core_dir_config *conf;
conf = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
if ((conf->server_signature == srv_sig_off)
|| (conf->server_signature == srv_sig_unset)) {
return "";
}
apr_snprintf(sport, sizeof sport, "%u", (unsigned) ap_get_server_port(r));
if (conf->server_signature == srv_sig_withmail) {
return apr_pstrcat(r->pool, prefix, "<address>",
ap_get_server_banner(),
" Server at <a href=\"",
ap_is_url(r->server->server_admin) ? "" : "mailto:",
ap_escape_html(r->pool, r->server->server_admin),
"\">",
ap_escape_html(r->pool, ap_get_server_name(r)),
"</a> Port ", sport,
"</address>\n", NULL);
}
return apr_pstrcat(r->pool, prefix, "<address>", ap_get_server_banner(),
" Server at ",
ap_escape_html(r->pool, ap_get_server_name(r)),
" Port ", sport,
"</address>\n", NULL);
}
/*
* Handle a request to include the server's OS platform in the Server
* response header field (the ServerTokens directive). Unfortunately
* this requires a new global in order to communicate the setting back to
* http_main so it can insert the information in the right place in the
* string.
*/
static char *server_banner = NULL;
static int banner_locked = 0;
static const char *server_description = NULL;
enum server_token_type {
SrvTk_MAJOR, /* eg: Apache/2 */
SrvTk_MINOR, /* eg. Apache/2.0 */
SrvTk_MINIMAL, /* eg: Apache/2.0.41 */
SrvTk_OS, /* eg: Apache/2.0.41 (UNIX) */
SrvTk_FULL, /* eg: Apache/2.0.41 (UNIX) PHP/4.2.2 FooBar/1.2b */
SrvTk_PRODUCT_ONLY /* eg: Apache */
};
static enum server_token_type ap_server_tokens = SrvTk_FULL;
static apr_status_t reset_banner(void *dummy)
{
banner_locked = 0;
ap_server_tokens = SrvTk_FULL;
server_banner = NULL;
server_description = NULL;
return APR_SUCCESS;
}
AP_DECLARE(void) ap_get_server_revision(ap_version_t *version)
{
version->major = AP_SERVER_MAJORVERSION_NUMBER;
version->minor = AP_SERVER_MINORVERSION_NUMBER;
version->patch = AP_SERVER_PATCHLEVEL_NUMBER;
version->add_string = AP_SERVER_ADD_STRING;
}
AP_DECLARE(const char *) ap_get_server_description(void)
{
return server_description ? server_description :
AP_SERVER_BASEVERSION " (" PLATFORM ")";
}
AP_DECLARE(const char *) ap_get_server_banner(void)
{
return server_banner ? server_banner : AP_SERVER_BASEVERSION;
}
AP_DECLARE(void) ap_add_version_component(apr_pool_t *pconf, const char *component)
{
if (! banner_locked) {
/*
* If the version string is null, register our cleanup to reset the
* pointer on pool destruction. We also know that, if NULL,
* we are adding the original SERVER_BASEVERSION string.
*/
if (server_banner == NULL) {
apr_pool_cleanup_register(pconf, NULL, reset_banner,
apr_pool_cleanup_null);
server_banner = apr_pstrdup(pconf, component);
}
else {
/*
* Tack the given component identifier to the end of
* the existing string.
*/
server_banner = apr_pstrcat(pconf, server_banner, " ",
component, NULL);
}
}
server_description = apr_pstrcat(pconf, server_description, " ",
component, NULL);
}
/*
* This routine adds the real server base identity to the banner string,
* and then locks out changes until the next reconfig.
*/
static void set_banner(apr_pool_t *pconf)
{
if (ap_server_tokens == SrvTk_PRODUCT_ONLY) {
ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT);
}
else if (ap_server_tokens == SrvTk_MINIMAL) {
ap_add_version_component(pconf, AP_SERVER_BASEVERSION);
}
else if (ap_server_tokens == SrvTk_MINOR) {
ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT "/" AP_SERVER_MINORREVISION);
}
else if (ap_server_tokens == SrvTk_MAJOR) {
ap_add_version_component(pconf, AP_SERVER_BASEPRODUCT "/" AP_SERVER_MAJORVERSION);
}
else {
ap_add_version_component(pconf, AP_SERVER_BASEVERSION " (" PLATFORM ")");
}
/*
* Lock the server_banner string if we're not displaying
* the full set of tokens
*/
if (ap_server_tokens != SrvTk_FULL) {
banner_locked++;
}
server_description = AP_SERVER_BASEVERSION " (" PLATFORM ")";
}
static const char *set_serv_tokens(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (!ap_cstr_casecmp(arg, "OS")) {
ap_server_tokens = SrvTk_OS;
}
else if (!ap_cstr_casecmp(arg, "Min") || !ap_cstr_casecmp(arg, "Minimal")) {
ap_server_tokens = SrvTk_MINIMAL;
}
else if (!ap_cstr_casecmp(arg, "Major")) {
ap_server_tokens = SrvTk_MAJOR;
}
else if (!ap_cstr_casecmp(arg, "Minor") ) {
ap_server_tokens = SrvTk_MINOR;
}
else if (!ap_cstr_casecmp(arg, "Prod") || !ap_cstr_casecmp(arg, "ProductOnly")) {
ap_server_tokens = SrvTk_PRODUCT_ONLY;
}
else if (!ap_cstr_casecmp(arg, "Full")) {
ap_server_tokens = SrvTk_FULL;
}
else {
return "ServerTokens takes 1 argument: 'Prod(uctOnly)', 'Major', 'Minor', 'Min(imal)', 'OS', or 'Full'";
}
return NULL;
}
static const char *set_limit_req_line(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
int lim;
if (err != NULL) {
return err;
}
lim = atoi(arg);
if (lim < 0) {
return apr_pstrcat(cmd->temp_pool, "LimitRequestLine \"", arg,
"\" must be a non-negative integer", NULL);
}
cmd->server->limit_req_line = lim;
return NULL;
}
static const char *set_limit_req_fieldsize(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
int lim;
if (err != NULL) {
return err;
}
lim = atoi(arg);
if (lim < 0) {
return apr_pstrcat(cmd->temp_pool, "LimitRequestFieldsize \"", arg,
"\" must be a non-negative integer",
NULL);
}
cmd->server->limit_req_fieldsize = lim;
return NULL;
}
static const char *set_limit_req_fields(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
int lim;
if (err != NULL) {
return err;
}
lim = atoi(arg);
if (lim < 0) {
return apr_pstrcat(cmd->temp_pool, "LimitRequestFields \"", arg,
"\" must be a non-negative integer (0 = no limit)",
NULL);
}
cmd->server->limit_req_fields = lim;
return NULL;
}
static const char *set_limit_req_body(cmd_parms *cmd, void *conf_,
const char *arg)
{
core_dir_config *conf = conf_;
char *errp;
if (APR_SUCCESS != apr_strtoff(&conf->limit_req_body, arg, &errp, 10)) {
return "LimitRequestBody argument is not parsable.";
}
if (*errp || conf->limit_req_body < 0) {
return "LimitRequestBody requires a non-negative integer.";
}
return NULL;
}
static const char *set_limit_xml_req_body(cmd_parms *cmd, void *conf_,
const char *arg)
{
core_dir_config *conf = conf_;
conf->limit_xml_body = atol(arg);
if (conf->limit_xml_body < 0)
return "LimitXMLRequestBody requires a non-negative integer.";
/* zero is AP_MAX_LIMIT_XML_BODY (implicitly) */
if ((apr_size_t)conf->limit_xml_body > AP_MAX_LIMIT_XML_BODY)
return apr_psprintf(cmd->pool, "LimitXMLRequestBody must not exceed "
"%" APR_SIZE_T_FMT, AP_MAX_LIMIT_XML_BODY);
return NULL;
}
static const char *set_max_ranges(cmd_parms *cmd, void *conf_, const char *arg)
{
core_dir_config *conf = conf_;
int val = 0;
if (!ap_cstr_casecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!ap_cstr_casecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!ap_cstr_casecmp(arg, "unlimited")) {
val = AP_MAXRANGES_UNLIMITED;
}
else {
val = atoi(arg);
if (val <= 0)
return "MaxRanges requires 'none', 'default', 'unlimited' or "
"a positive integer";
}
conf->max_ranges = val;
return NULL;
}
static const char *set_max_overlaps(cmd_parms *cmd, void *conf_, const char *arg)
{
core_dir_config *conf = conf_;
int val = 0;
if (!ap_cstr_casecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!ap_cstr_casecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!ap_cstr_casecmp(arg, "unlimited")) {
val = AP_MAXRANGES_UNLIMITED;
}
else {
val = atoi(arg);
if (val <= 0)
return "MaxRangeOverlaps requires 'none', 'default', 'unlimited' or "
"a positive integer";
}
conf->max_overlaps = val;
return NULL;
}
static const char *set_max_reversals(cmd_parms *cmd, void *conf_, const char *arg)
{
core_dir_config *conf = conf_;
int val = 0;
if (!ap_cstr_casecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!ap_cstr_casecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!ap_cstr_casecmp(arg, "unlimited")) {
val = AP_MAXRANGES_UNLIMITED;
}
else {
val = atoi(arg);
if (val <= 0)
return "MaxRangeReversals requires 'none', 'default', 'unlimited' or "
"a positive integer";
}
conf->max_reversals = val;
return NULL;
}
AP_DECLARE(apr_size_t) ap_get_limit_xml_body(const request_rec *r)
{
core_dir_config *conf;
conf = ap_get_core_module_config(r->per_dir_config);
if (conf->limit_xml_body == AP_LIMIT_UNSET)
return AP_DEFAULT_LIMIT_XML_BODY;
if (conf->limit_xml_body == 0)
return AP_MAX_LIMIT_XML_BODY;
return (apr_size_t)conf->limit_xml_body;
}
#if !defined (RLIMIT_CPU) || !(defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS)) || !defined (RLIMIT_NPROC)
static const char *no_set_limit(cmd_parms *cmd, void *conf_,
const char *arg, const char *arg2)
{
ap_log_error(APLOG_MARK, APLOG_ERR, 0, cmd->server, APLOGNO(00118)
"%s not supported on this platform", cmd->cmd->name);
return NULL;
}
#endif
#ifdef RLIMIT_CPU
static const char *set_limit_cpu(cmd_parms *cmd, void *conf_,
const char *arg, const char *arg2)
{
core_dir_config *conf = conf_;
ap_unixd_set_rlimit(cmd, &conf->limit_cpu, arg, arg2, RLIMIT_CPU);
return NULL;
}
#endif
#if defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined(RLIMIT_AS)
static const char *set_limit_mem(cmd_parms *cmd, void *conf_,
const char *arg, const char * arg2)
{
core_dir_config *conf = conf_;
#if defined(RLIMIT_AS)
ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2 ,RLIMIT_AS);
#elif defined(RLIMIT_DATA)
ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2, RLIMIT_DATA);
#elif defined(RLIMIT_VMEM)
ap_unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2, RLIMIT_VMEM);
#endif
return NULL;
}
#endif
#ifdef RLIMIT_NPROC
static const char *set_limit_nproc(cmd_parms *cmd, void *conf_,
const char *arg, const char * arg2)
{
core_dir_config *conf = conf_;
ap_unixd_set_rlimit(cmd, &conf->limit_nproc, arg, arg2, RLIMIT_NPROC);
return NULL;
}
#endif
static const char *set_recursion_limit(cmd_parms *cmd, void *dummy,
const char *arg1, const char *arg2)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
int limit = atoi(arg1);
if (limit <= 0) {
return "The recursion limit must be greater than zero.";
}
if (limit < 4) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00119)
"Limiting internal redirects to very low numbers may "
"cause normal requests to fail.");
}
conf->redirect_limit = limit;
if (arg2) {
limit = atoi(arg2);
if (limit <= 0) {
return "The recursion limit must be greater than zero.";
}
if (limit < 4) {
ap_log_error(APLOG_MARK, APLOG_WARNING, 0, cmd->server, APLOGNO(00120)
"Limiting the subrequest depth to a very low level may"
" cause normal requests to fail.");
}
}
conf->subreq_limit = limit;
return NULL;
}
static void log_backtrace(const request_rec *r)
{
if (APLOGrdebug(r)) {
const request_rec *top = r;
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00121)
"r->uri = %s", r->uri ? r->uri : "(unexpectedly NULL)");
while (top && (top->prev || top->main)) {
if (top->prev) {
top = top->prev;
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00122)
"redirected from r->uri = %s",
top->uri ? top->uri : "(unexpectedly NULL)");
}
if (!top->prev && top->main) {
top = top->main;
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(00123)
"subrequested from r->uri = %s",
top->uri ? top->uri : "(unexpectedly NULL)");
}
}
}
}
/*
* check whether redirect limit is reached
*/
AP_DECLARE(int) ap_is_recursion_limit_exceeded(const request_rec *r)
{
core_server_config *conf =
ap_get_core_module_config(r->server->module_config);
const request_rec *top = r;
int redirects = 0, subreqs = 0;
int rlimit = conf->redirect_limit
? conf->redirect_limit
: AP_DEFAULT_MAX_INTERNAL_REDIRECTS;
int slimit = conf->subreq_limit
? conf->subreq_limit
: AP_DEFAULT_MAX_SUBREQ_DEPTH;
while (top->prev || top->main) {
if (top->prev) {
if (++redirects >= rlimit) {
/* uuh, too much. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00124)
"Request exceeded the limit of %d internal "
"redirects due to probable configuration error. "
"Use 'LimitInternalRecursion' to increase the "
"limit if necessary. Use 'LogLevel debug' to get "
"a backtrace.", rlimit);
/* post backtrace */
log_backtrace(r);
/* return failure */
return 1;
}
top = top->prev;
}
if (!top->prev && top->main) {
if (++subreqs >= slimit) {
/* uuh, too much. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00125)
"Request exceeded the limit of %d subrequest "
"nesting levels due to probable configuration "
"error. Use 'LimitInternalRecursion' to increase "
"the limit if necessary. Use 'LogLevel debug' to "
"get a backtrace.", slimit);
/* post backtrace */
log_backtrace(r);
/* return failure */
return 1;
}
top = top->main;
}
}
/* recursion state: ok */
return 0;
}
static const char *set_trace_enable(cmd_parms *cmd, void *dummy,
const char *arg1)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
if (ap_cstr_casecmp(arg1, "on") == 0) {
conf->trace_enable = AP_TRACE_ENABLE;
}
else if (ap_cstr_casecmp(arg1, "off") == 0) {
conf->trace_enable = AP_TRACE_DISABLE;
}
else if (ap_cstr_casecmp(arg1, "extended") == 0) {
conf->trace_enable = AP_TRACE_EXTENDED;
}
else {
return "TraceEnable must be one of 'on', 'off', or 'extended'";
}
return NULL;
}
static const char *set_protocols(cmd_parms *cmd, void *dummy,
const char *arg)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
const char **np;
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err) {
return err;
}
np = (const char **)apr_array_push(conf->protocols);
*np = arg;
return NULL;
}
static const char *set_protocols_honor_order(cmd_parms *cmd, void *dummy,
const char *arg)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
const char *err = ap_check_cmd_context(cmd, NOT_IN_DIR_CONTEXT);
if (err) {
return err;
}
if (ap_cstr_casecmp(arg, "on") == 0) {
conf->protocols_honor_order = 1;
}
else if (ap_cstr_casecmp(arg, "off") == 0) {
conf->protocols_honor_order = 0;
}
else {
return "ProtocolsHonorOrder must be 'on' or 'off'";
}
return NULL;
}
static const char *set_http_protocol_options(cmd_parms *cmd, void *dummy,
const char *arg)
{
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
if (strcasecmp(arg, "allow0.9") == 0)
conf->http09_enable |= AP_HTTP09_ENABLE;
else if (strcasecmp(arg, "require1.0") == 0)
conf->http09_enable |= AP_HTTP09_DISABLE;
else if (strcasecmp(arg, "strict") == 0)
conf->http_conformance |= AP_HTTP_CONFORMANCE_STRICT;
else if (strcasecmp(arg, "unsafe") == 0)
conf->http_conformance |= AP_HTTP_CONFORMANCE_UNSAFE;
else if (strcasecmp(arg, "registeredmethods") == 0)
conf->http_methods |= AP_HTTP_METHODS_REGISTERED;
else if (strcasecmp(arg, "lenientmethods") == 0)
conf->http_methods |= AP_HTTP_METHODS_LENIENT;
else
return "HttpProtocolOptions accepts "
"'Unsafe' or 'Strict' (default), "
"'RegisteredMethods' or 'LenientMethods' (default), and "
"'Require1.0' or 'Allow0.9' (default)";
if ((conf->http09_enable & AP_HTTP09_ENABLE)
&& (conf->http09_enable & AP_HTTP09_DISABLE))
return "HttpProtocolOptions 'Allow0.9' and 'Require1.0'"
" are mutually exclusive";
if ((conf->http_conformance & AP_HTTP_CONFORMANCE_STRICT)
&& (conf->http_conformance & AP_HTTP_CONFORMANCE_UNSAFE))
return "HttpProtocolOptions 'Strict' and 'Unsafe'"
" are mutually exclusive";
if ((conf->http_methods & AP_HTTP_METHODS_REGISTERED)
&& (conf->http_methods & AP_HTTP_METHODS_LENIENT))
return "HttpProtocolOptions 'RegisteredMethods' and 'LenientMethods'"
" are mutually exclusive";
return NULL;
}
static const char *set_http_method(cmd_parms *cmd, void *conf, const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL)
return err;
ap_method_register(cmd->pool, arg);
return NULL;
}
static apr_hash_t *errorlog_hash;
static int log_constant_item(const ap_errorlog_info *info, const char *arg,
char *buf, int buflen)
{
char *end = apr_cpystrn(buf, arg, buflen);
return end - buf;
}
static char *parse_errorlog_misc_string(apr_pool_t *p,
ap_errorlog_format_item *it,
const char **sa)
{
const char *s;
char scratch[MAX_STRING_LEN];
char *d = scratch;
/*
* non-leading white space terminates this string to allow the next field
* separator to be inserted
*/
int at_start = 1;
it->func = log_constant_item;
s = *sa;
while (*s && *s != '%' && (*s != ' ' || at_start) && d < scratch + MAX_STRING_LEN) {
if (*s != '\\') {
if (*s != ' ') {
at_start = 0;
}
*d++ = *s++;
}
else {
s++;
switch (*s) {
case 'r':
*d++ = '\r';
s++;
break;
case 'n':
*d++ = '\n';
s++;
break;
case 't':
*d++ = '\t';
s++;
break;
case '\0':
/* handle end of string */
*d++ = '\\';
break;
default:
/* copy next char verbatim */
*d++ = *s++;
break;
}
}
}
*d = '\0';
it->arg = apr_pstrdup(p, scratch);
*sa = s;
return NULL;
}
static char *parse_errorlog_item(apr_pool_t *p, ap_errorlog_format_item *it,
const char **sa)
{
const char *s = *sa;
ap_errorlog_handler *handler;
int i;
if (*s != '%') {
if (*s == ' ') {
it->flags |= AP_ERRORLOG_FLAG_FIELD_SEP;
}
return parse_errorlog_misc_string(p, it, sa);
}
++s;
if (*s == ' ') {
/* percent-space (% ) is a field separator */
it->flags |= AP_ERRORLOG_FLAG_FIELD_SEP;
*sa = ++s;
/* recurse */
return parse_errorlog_item(p, it, sa);
}
else if (*s == '%') {
it->arg = "%";
it->func = log_constant_item;
*sa = ++s;
return NULL;
}
while (*s) {
switch (*s) {
case '{':
++s;
it->arg = ap_getword(p, &s, '}');
break;
case '+':
++s;
it->flags |= AP_ERRORLOG_FLAG_REQUIRED;
break;
case '-':
++s;
it->flags |= AP_ERRORLOG_FLAG_NULL_AS_HYPHEN;
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
i = *s - '0';
while (apr_isdigit(*++s))
i = i * 10 + (*s) - '0';
it->min_loglevel = i;
break;
case 'M':
it->func = NULL;
it->flags |= AP_ERRORLOG_FLAG_MESSAGE;
*sa = ++s;
return NULL;
default:
handler = (ap_errorlog_handler *)apr_hash_get(errorlog_hash, s, 1);
if (!handler) {
char dummy[2];
dummy[0] = *s;
dummy[1] = '\0';
return apr_pstrcat(p, "Unrecognized error log format directive %",
dummy, NULL);
}
it->func = handler->func;
*sa = ++s;
return NULL;
}
}
return "Ran off end of error log format parsing args to some directive";
}
static apr_array_header_t *parse_errorlog_string(apr_pool_t *p,
const char *s,
const char **err,
int is_main_fmt)
{
apr_array_header_t *a = apr_array_make(p, 30,
sizeof(ap_errorlog_format_item));
char *res;
int seen_msg_fmt = 0;
while (s && *s) {
ap_errorlog_format_item *item =
(ap_errorlog_format_item *)apr_array_push(a);
memset(item, 0, sizeof(*item));
res = parse_errorlog_item(p, item, &s);
if (res) {
*err = res;
return NULL;
}
if (item->flags & AP_ERRORLOG_FLAG_MESSAGE) {
if (!is_main_fmt) {
*err = "%M cannot be used in once-per-request or "
"once-per-connection formats";
return NULL;
}
seen_msg_fmt = 1;
}
if (is_main_fmt && item->flags & AP_ERRORLOG_FLAG_REQUIRED) {
*err = "The '+' flag cannot be used in the main error log format";
return NULL;
}
if (!is_main_fmt && item->min_loglevel) {
*err = "The loglevel cannot be used as a condition in "
"once-per-request or once-per-connection formats";
return NULL;
}
if (item->min_loglevel > APLOG_TRACE8) {
*err = "The specified loglevel modifier is out of range";
return NULL;
}
}
if (is_main_fmt && !seen_msg_fmt) {
*err = "main ErrorLogFormat must contain message format string '%M'";
return NULL;
}
return a;
}
static const char *set_errorlog_format(cmd_parms *cmd, void *dummy,
const char *arg1, const char *arg2)
{
const char *err_string = NULL;
core_server_config *conf =
ap_get_core_module_config(cmd->server->module_config);
if (!arg2) {
conf->error_log_format = parse_errorlog_string(cmd->pool, arg1,
&err_string, 1);
}
else if (!ap_cstr_casecmp(arg1, "connection")) {
if (!conf->error_log_conn) {
conf->error_log_conn = apr_array_make(cmd->pool, 5,
sizeof(apr_array_header_t *));
}
if (*arg2) {
apr_array_header_t **e;
e = (apr_array_header_t **) apr_array_push(conf->error_log_conn);
*e = parse_errorlog_string(cmd->pool, arg2, &err_string, 0);
}
}
else if (!ap_cstr_casecmp(arg1, "request")) {
if (!conf->error_log_req) {
conf->error_log_req = apr_array_make(cmd->pool, 5,
sizeof(apr_array_header_t *));
}
if (*arg2) {
apr_array_header_t **e;
e = (apr_array_header_t **) apr_array_push(conf->error_log_req);
*e = parse_errorlog_string(cmd->pool, arg2, &err_string, 0);
}
}
else {
err_string = "ErrorLogFormat type must be one of request, connection";
}
return err_string;
}
AP_DECLARE(void) ap_register_errorlog_handler(apr_pool_t *p, char *tag,
ap_errorlog_handler_fn_t *handler,
int flags)
{
ap_errorlog_handler *log_struct = apr_palloc(p, sizeof(*log_struct));
log_struct->func = handler;
log_struct->flags = flags;
apr_hash_set(errorlog_hash, tag, 1, (const void *)log_struct);
}
static const char *set_merge_trailers(cmd_parms *cmd, void *dummy, int arg)
{
core_server_config *conf = ap_get_module_config(cmd->server->module_config,
&core_module);
conf->merge_trailers = (arg ? AP_MERGE_TRAILERS_ENABLE :
AP_MERGE_TRAILERS_DISABLE);
return NULL;
}
/* Note --- ErrorDocument will now work from .htaccess files.
* The AllowOverride of Fileinfo allows webmasters to turn it off
*/
static const command_rec core_cmds[] = {
/* Old access config file commands */
AP_INIT_RAW_ARGS("<Directory", dirsection, NULL, RSRC_CONF,
"Container for directives affecting resources located in the specified "
"directories"),
AP_INIT_RAW_ARGS("<Location", urlsection, NULL, RSRC_CONF,
"Container for directives affecting resources accessed through the "
"specified URL paths"),
AP_INIT_RAW_ARGS("<VirtualHost", virtualhost_section, NULL, RSRC_CONF,
"Container to map directives to a particular virtual host, takes one or "
"more host addresses"),
AP_INIT_RAW_ARGS("<Files", filesection, NULL, OR_ALL,
"Container for directives affecting files matching specified patterns"),
AP_INIT_RAW_ARGS("<Limit", ap_limit_section, NULL, OR_LIMIT | OR_AUTHCFG,
"Container for authentication directives when accessed using specified HTTP "
"methods"),
AP_INIT_RAW_ARGS("<LimitExcept", ap_limit_section, (void*)1,
OR_LIMIT | OR_AUTHCFG,
"Container for authentication directives to be applied when any HTTP "
"method other than those specified is used to access the resource"),
AP_INIT_RAW_ARGS("<IfModule", start_cond_section, (void *)test_ifmod_section,
EXEC_ON_READ | OR_ALL,
"Container for directives based on existence of specified modules"),
AP_INIT_RAW_ARGS("<IfDefine", start_cond_section, (void *)test_ifdefine_section,
EXEC_ON_READ | OR_ALL,
"Container for directives based on existence of command line defines"),
AP_INIT_RAW_ARGS("<IfFile", start_cond_section, (void *)test_iffile_section,
EXEC_ON_READ | OR_ALL,
"Container for directives based on existence of files on disk"),
AP_INIT_RAW_ARGS("<IfDirective", start_cond_section, (void *)test_ifdirective_section,
EXEC_ON_READ | OR_ALL,
"Container for directives based on existence of named directive"),
AP_INIT_RAW_ARGS("<IfSection", start_cond_section, (void *)test_ifsection_section,
EXEC_ON_READ | OR_ALL,
"Container for directives based on existence of named section"),
AP_INIT_RAW_ARGS("<DirectoryMatch", dirsection, (void*)1, RSRC_CONF,
"Container for directives affecting resources located in the "
"specified directories"),
AP_INIT_RAW_ARGS("<LocationMatch", urlsection, (void*)1, RSRC_CONF,
"Container for directives affecting resources accessed through the "
"specified URL paths"),
AP_INIT_RAW_ARGS("<FilesMatch", filesection, (void*)1, OR_ALL,
"Container for directives affecting files matching specified patterns"),
#ifdef GPROF
AP_INIT_TAKE1("GprofDir", set_gprof_dir, NULL, RSRC_CONF,
"Directory to plop gmon.out files"),
#endif
AP_INIT_TAKE1("AddDefaultCharset", set_add_default_charset, NULL, OR_FILEINFO,
"The name of the default charset to add to any Content-Type without one or 'Off' to disable"),
AP_INIT_TAKE1("AcceptPathInfo", set_accept_path_info, NULL, OR_FILEINFO,
"Set to on or off for PATH_INFO to be accepted by handlers, or default for the per-handler preference"),
AP_INIT_TAKE12("Define", set_define, NULL, EXEC_ON_READ|ACCESS_CONF|RSRC_CONF,
"Define a variable, optionally to a value. Same as passing -D to the command line."),
AP_INIT_TAKE1("UnDefine", unset_define, NULL, EXEC_ON_READ|ACCESS_CONF|RSRC_CONF,
"Undefine the existence of a variable. Undo a Define."),
AP_INIT_RAW_ARGS("Error", generate_error, NULL, OR_ALL,
"Generate error message from within configuration"),
AP_INIT_RAW_ARGS("<If", ifsection, COND_IF, OR_ALL,
"Container for directives to be conditionally applied"),
AP_INIT_RAW_ARGS("<ElseIf", ifsection, COND_ELSEIF, OR_ALL,
"Container for directives to be conditionally applied"),
AP_INIT_RAW_ARGS("<Else", ifsection, COND_ELSE, OR_ALL,
"Container for directives to be conditionally applied"),
/* Old resource config file commands */
AP_INIT_RAW_ARGS("AccessFileName", set_access_name, NULL, RSRC_CONF,
"Name(s) of per-directory config files (default: .htaccess)"),
AP_INIT_TAKE1("DocumentRoot", set_document_root, NULL, RSRC_CONF,
"Root directory of the document tree"),
AP_INIT_TAKE2("ErrorDocument", set_error_document, NULL, OR_FILEINFO,
"Change responses for HTTP errors"),
AP_INIT_RAW_ARGS("AllowOverride", set_override, NULL, ACCESS_CONF,
"Controls what groups of directives can be configured by per-directory "
"config files"),
AP_INIT_TAKE_ARGV("AllowOverrideList", set_override_list, NULL, ACCESS_CONF,
"Controls what individual directives can be configured by per-directory "
"config files"),
AP_INIT_RAW_ARGS("Options", set_options, NULL, OR_OPTIONS,
"Set a number of attributes for a given directory"),
AP_INIT_TAKE1("DefaultType", set_default_type, NULL, OR_FILEINFO,
"the default media type for otherwise untyped files (DEPRECATED)"),
AP_INIT_RAW_ARGS("FileETag", set_etag_bits, NULL, OR_FILEINFO,
"Specify components used to construct a file's ETag"),
AP_INIT_TAKE1("EnableMMAP", set_enable_mmap, NULL, OR_FILEINFO,
"Controls whether memory-mapping may be used to read files"),
AP_INIT_TAKE1("EnableSendfile", set_enable_sendfile, NULL, OR_FILEINFO,
"Controls whether sendfile may be used to transmit files"),
AP_INIT_TAKE1("ReadBufferSize", set_read_buf_size, NULL, ACCESS_CONF|RSRC_CONF,
"Size (in bytes) of the memory buffers used to read data"),
AP_INIT_TAKE1("FlushMaxThreshold", set_flush_max_threshold, NULL, RSRC_CONF,
"Maximum threshold above which pending data are flushed to the network"),
AP_INIT_TAKE1("FlushMaxPipelined", set_flush_max_pipelined, NULL, RSRC_CONF,
"Maximum number of pipelined responses (pending) above which they are "
"flushed to the network"),
/* Old server config file commands */
AP_INIT_TAKE1("Protocol", set_protocol, NULL, RSRC_CONF,
"Set the Protocol for httpd to use."),
AP_INIT_TAKE2("AcceptFilter", set_accf_map, NULL, RSRC_CONF,
"Set the Accept Filter to use for a protocol"),
AP_INIT_TAKE1("Port", ap_set_deprecated, NULL, RSRC_CONF,
"Port was replaced with Listen in Apache 2.0"),
AP_INIT_TAKE1("HostnameLookups", set_hostname_lookups, NULL,
ACCESS_CONF|RSRC_CONF,
"\"on\" to enable, \"off\" to disable reverse DNS lookups, or \"double\" to "
"enable double-reverse DNS lookups"),
AP_INIT_TAKE1("ServerAdmin", set_server_string_slot,
(void *)APR_OFFSETOF(server_rec, server_admin), RSRC_CONF,
"The email address of the server administrator"),
AP_INIT_TAKE1("ServerName", server_hostname_port, NULL, RSRC_CONF,
"The hostname and port of the server"),
AP_INIT_TAKE1("ServerSignature", set_signature_flag, NULL, OR_ALL,
"En-/disable server signature (on|off|email)"),
AP_INIT_TAKE1("ServerRoot", set_server_root, NULL, RSRC_CONF | EXEC_ON_READ,
"Common directory of server-related files (logs, confs, etc.)"),
AP_INIT_TAKE1("DefaultRuntimeDir", set_runtime_dir, NULL, RSRC_CONF | EXEC_ON_READ,
"Common directory for run-time files (shared memory, locks, etc.)"),
AP_INIT_TAKE1("ErrorLog", set_server_string_slot,
(void *)APR_OFFSETOF(server_rec, error_fname), RSRC_CONF,
"The filename of the error log"),
AP_INIT_TAKE12("ErrorLogFormat", set_errorlog_format, NULL, RSRC_CONF,
"Format string for the ErrorLog"),
AP_INIT_RAW_ARGS("ServerAlias", set_server_alias, NULL, RSRC_CONF,
"A name or names alternately used to access the server"),
AP_INIT_TAKE1("ServerPath", set_serverpath, NULL, RSRC_CONF,
"The pathname the server can be reached at"),
AP_INIT_TAKE1("Timeout", set_timeout, NULL, RSRC_CONF,
"Timeout duration (sec)"),
AP_INIT_FLAG("ContentDigest", set_content_md5, NULL, OR_OPTIONS,
"whether or not to send a Content-MD5 header with each request"),
AP_INIT_TAKE1("UseCanonicalName", set_use_canonical_name, NULL,
RSRC_CONF|ACCESS_CONF,
"How to work out the ServerName : Port when constructing URLs"),
AP_INIT_TAKE1("UseCanonicalPhysicalPort", set_use_canonical_phys_port, NULL,
RSRC_CONF|ACCESS_CONF,
"Whether to use the physical Port when constructing URLs"),
/* TODO: RlimitFoo should all be part of mod_cgi, not in the core */
/* TODO: ListenBacklog in MPM */
AP_INIT_TAKE1("Include", include_config, NULL,
(RSRC_CONF | ACCESS_CONF | EXEC_ON_READ),
"Name(s) of the config file(s) to be included; fails if the wildcard does "
"not match at least one file"),
AP_INIT_TAKE1("IncludeOptional", include_config, (void*)1,
(RSRC_CONF | ACCESS_CONF | EXEC_ON_READ),
"Name or pattern of the config file(s) to be included; ignored if the file "
"does not exist or the pattern does not match any files"),
AP_INIT_ITERATE("LogLevel", set_loglevel, NULL, RSRC_CONF|ACCESS_CONF,
"Level of verbosity in error logging"),
AP_INIT_TAKE1("NameVirtualHost", ap_set_name_virtual_host, NULL, RSRC_CONF,
"A numeric IP address:port, or the name of a host"),
AP_INIT_TAKE1("ServerTokens", set_serv_tokens, NULL, RSRC_CONF,
"Determine tokens displayed in the Server: header - Min(imal), "
"Major, Minor, Prod(uctOnly), OS, or Full"),
AP_INIT_TAKE1("LimitRequestLine", set_limit_req_line, NULL, RSRC_CONF,
"Limit on maximum size of an HTTP request line"),
AP_INIT_TAKE1("LimitRequestFieldsize", set_limit_req_fieldsize, NULL,
RSRC_CONF,
"Limit on maximum size of an HTTP request header field"),
AP_INIT_TAKE1("LimitRequestFields", set_limit_req_fields, NULL, RSRC_CONF,
"Limit (0 = unlimited) on max number of header fields in a request message"),
AP_INIT_TAKE1("LimitRequestBody", set_limit_req_body,
(void*)APR_OFFSETOF(core_dir_config, limit_req_body), OR_ALL,
"Limit (in bytes) on maximum size of request message body"),
AP_INIT_TAKE1("LimitXMLRequestBody", set_limit_xml_req_body, NULL, OR_ALL,
"Limit (in bytes) on maximum size of an XML-based request "
"body"),
AP_INIT_RAW_ARGS("Mutex", ap_set_mutex, NULL, RSRC_CONF,
"mutex (or \"default\") and mechanism"),
AP_INIT_TAKE1("MaxRanges", set_max_ranges, NULL, RSRC_CONF|ACCESS_CONF,
"Maximum number of Ranges in a request before returning the entire "
"resource, or 0 for unlimited"),
AP_INIT_TAKE1("MaxRangeOverlaps", set_max_overlaps, NULL, RSRC_CONF|ACCESS_CONF,
"Maximum number of overlaps in Ranges in a request before returning the entire "
"resource, or 0 for unlimited"),
AP_INIT_TAKE1("MaxRangeReversals", set_max_reversals, NULL, RSRC_CONF|ACCESS_CONF,
"Maximum number of reversals in Ranges in a request before returning the entire "
"resource, or 0 for unlimited"),
/* System Resource Controls */
#ifdef RLIMIT_CPU
AP_INIT_TAKE12("RLimitCPU", set_limit_cpu,
(void*)APR_OFFSETOF(core_dir_config, limit_cpu),
OR_ALL, "Soft/hard limits for max CPU usage in seconds"),
#else
AP_INIT_TAKE12("RLimitCPU", no_set_limit, NULL,
OR_ALL, "Soft/hard limits for max CPU usage in seconds"),
#endif
#if defined (RLIMIT_DATA) || defined (RLIMIT_VMEM) || defined (RLIMIT_AS)
AP_INIT_TAKE12("RLimitMEM", set_limit_mem,
(void*)APR_OFFSETOF(core_dir_config, limit_mem),
OR_ALL, "Soft/hard limits for max memory usage per process"),
#else
AP_INIT_TAKE12("RLimitMEM", no_set_limit, NULL,
OR_ALL, "Soft/hard limits for max memory usage per process"),
#endif
#ifdef RLIMIT_NPROC
AP_INIT_TAKE12("RLimitNPROC", set_limit_nproc,
(void*)APR_OFFSETOF(core_dir_config, limit_nproc),
OR_ALL, "soft/hard limits for max number of processes per uid"),
#else
AP_INIT_TAKE12("RLimitNPROC", no_set_limit, NULL,
OR_ALL, "soft/hard limits for max number of processes per uid"),
#endif
AP_INIT_RAW_ARGS("RegexDefaultOptions", set_regex_default_options, NULL, RSRC_CONF,
"default options for regexes (prefixed by '+' to add, '-' to del)"),
/* internal recursion stopper */
AP_INIT_TAKE12("LimitInternalRecursion", set_recursion_limit, NULL, RSRC_CONF,
"maximum recursion depth of internal redirects and subrequests"),
AP_INIT_FLAG("CGIPassAuth", set_cgi_pass_auth, NULL, OR_AUTHCFG,
"Controls whether HTTP authorization headers, normally hidden, will "
"be passed to scripts"),
AP_INIT_TAKE2("CGIVar", set_cgi_var, NULL, OR_FILEINFO,
"Controls how some CGI variables are set"),
AP_INIT_FLAG("QualifyRedirectURL", set_qualify_redirect_url, NULL, OR_FILEINFO,
"Controls whether the REDIRECT_URL environment variable is fully "
"qualified"),
AP_INIT_FLAG("StrictHostCheck", set_core_server_flag,
(void *)APR_OFFSETOF(core_server_config, strict_host_check),
RSRC_CONF,
"Controls whether a hostname match is required"),
AP_INIT_TAKE1("ForceType", ap_set_string_slot_lower,
(void *)APR_OFFSETOF(core_dir_config, mime_type), OR_FILEINFO,
"a mime type that overrides other configured type"),
AP_INIT_TAKE1("SetHandler", set_sethandler, NULL, OR_FILEINFO,
"a handler name that overrides any other configured handler"),
AP_INIT_TAKE1("SetOutputFilter", ap_set_string_slot,
(void *)APR_OFFSETOF(core_dir_config, output_filters), OR_FILEINFO,
"filter (or ; delimited list of filters) to be run on the request content"),
AP_INIT_TAKE1("SetInputFilter", ap_set_string_slot,
(void *)APR_OFFSETOF(core_dir_config, input_filters), OR_FILEINFO,
"filter (or ; delimited list of filters) to be run on the request body"),
AP_INIT_TAKE1("AllowEncodedSlashes", set_allow2f, NULL, RSRC_CONF,
"Allow URLs containing '/' encoded as '%2F'"),
/* scoreboard.c directives */
AP_INIT_TAKE1("ScoreBoardFile", ap_set_scoreboard, NULL, RSRC_CONF,
"A file for Apache to maintain runtime process management information"),
AP_INIT_FLAG("ExtendedStatus", ap_set_extended_status, NULL, RSRC_CONF,
"\"On\" to track extended status information, \"Off\" to disable"),
AP_INIT_FLAG("SeeRequestTail", ap_set_reqtail, NULL, RSRC_CONF,
"For extended status, \"On\" to see the last 63 chars of "
"the request line, \"Off\" (default) to see the first 63"),
/*
* These are default configuration directives that mpms can/should
* pay attention to.
* XXX These are not for all platforms, and even some Unix MPMs might not want
* some directives.
*/
AP_INIT_TAKE1("PidFile", ap_mpm_set_pidfile, NULL, RSRC_CONF,
"A file for logging the server process ID"),
AP_INIT_TAKE1("MaxRequestsPerChild", ap_mpm_set_max_requests, NULL, RSRC_CONF,
"Maximum number of connections a particular child serves before "
"dying. (DEPRECATED, use MaxConnectionsPerChild)"),
AP_INIT_TAKE1("MaxConnectionsPerChild", ap_mpm_set_max_requests, NULL, RSRC_CONF,
"Maximum number of connections a particular child serves before dying."),
AP_INIT_TAKE1("CoreDumpDirectory", ap_mpm_set_coredumpdir, NULL, RSRC_CONF,
"The location of the directory Apache changes to before dumping core"),
AP_INIT_TAKE1("MaxMemFree", ap_mpm_set_max_mem_free, NULL, RSRC_CONF,
"Maximum number of 1k blocks a particular child's allocator may hold."),
AP_INIT_TAKE1("ThreadStackSize", ap_mpm_set_thread_stacksize, NULL, RSRC_CONF,
"Size in bytes of stack used by threads handling client connections"),
#if AP_ENABLE_EXCEPTION_HOOK
AP_INIT_TAKE1("EnableExceptionHook", ap_mpm_set_exception_hook, NULL, RSRC_CONF,
"Controls whether exception hook may be called after a crash"),
#endif
AP_INIT_TAKE1("TraceEnable", set_trace_enable, NULL, RSRC_CONF,
"'on' (default), 'off' or 'extended' to trace request body content"),
AP_INIT_FLAG("MergeTrailers", set_merge_trailers, NULL, RSRC_CONF,
"merge request trailers into request headers or not"),
AP_INIT_ITERATE("Protocols", set_protocols, NULL, RSRC_CONF,
"Controls which protocols are allowed"),
AP_INIT_TAKE1("ProtocolsHonorOrder", set_protocols_honor_order, NULL, RSRC_CONF,
"'off' (default) or 'on' to respect given order of protocols, "
"by default the client specified order determines selection"),
AP_INIT_ITERATE("HttpProtocolOptions", set_http_protocol_options, NULL, RSRC_CONF,
"'Allow0.9' or 'Require1.0' (default); "
"'RegisteredMethods' or 'LenientMethods' (default); "
"'Unsafe' or 'Strict' (default). Sets HTTP acceptance rules"),
AP_INIT_ITERATE("RegisterHttpMethod", set_http_method, NULL, RSRC_CONF,
"Registers non-standard HTTP methods"),
AP_INIT_FLAG("MergeSlashes", set_core_server_flag,
(void *)APR_OFFSETOF(core_server_config, merge_slashes),
RSRC_CONF,
"Controls whether consecutive slashes in the URI path are merged"),
{ NULL }
};
/*****************************************************************
*
* Core handlers for various phases of server operation...
*/
AP_DECLARE_NONSTD(int) ap_core_translate(request_rec *r)
{
apr_status_t rv;
char *path;
/* XXX this seems too specific, this should probably become
* some general-case test
*/
if (r->proxyreq) {
return HTTP_FORBIDDEN;
}
if (!r->uri || ((r->uri[0] != '/') && strcmp(r->uri, "*"))) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00126)
"Invalid URI in request '%s' '%s'", r->uri, r->the_request);
return HTTP_BAD_REQUEST;
}
if (r->server->path
&& !strncmp(r->uri, r->server->path, r->server->pathlen)
&& (r->server->path[r->server->pathlen - 1] == '/'
|| r->uri[r->server->pathlen] == '/'
|| r->uri[r->server->pathlen] == '\0'))
{
path = r->uri + r->server->pathlen;
}
else {
path = r->uri;
}
/*
* Make sure that we do not mess up the translation by adding two
* /'s in a row. This happens under windows when the document
* root ends with a /
*/
/* skip all leading /'s (e.g. http://localhost///foo)
* so we are looking at only the relative path.
*/
while (*path == '/') {
++path;
}
if ((rv = apr_filepath_merge(&r->filename, ap_document_root(r), path,
APR_FILEPATH_TRUENAME
| APR_FILEPATH_SECUREROOT, r->pool))
!= APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(00127)
"Cannot map %s to file", r->the_request);
return HTTP_FORBIDDEN;
}
r->canonical_filename = r->filename;
return OK;
}
/*****************************************************************
*
* Test the filesystem name through directory_walk and file_walk
*/
static int core_map_to_storage(request_rec *r)
{
int access_status;
if ((access_status = ap_directory_walk(r))) {
return access_status;
}
if ((access_status = ap_file_walk(r))) {
return access_status;
}
return OK;
}
static int do_nothing(request_rec *r) { return OK; }
static int core_override_type(request_rec *r)
{
core_dir_config *conf =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
/* Check for overrides with ForceType / SetHandler
*/
if (conf->mime_type && strcmp(conf->mime_type, "none"))
ap_set_content_type(r, (char*) conf->mime_type);
if (conf->expr_handler) {
const char *err;
const char *val;
val = ap_expr_str_exec(r, conf->expr_handler, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(03154)
"Can't evaluate handler expression: %s", err);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (val != ap_strstr_c(val, "proxy:unix")) {
/* Retained for compatibility -- but not for UDS */
char *tmp = apr_pstrdup(r->pool, val);
ap_str_tolower(tmp);
val = tmp;
}
if (strcmp(val, "none")) {
r->handler = val;
}
}
else if (conf->handler && strcmp(conf->handler, "none")) {
r->handler = conf->handler;
}
/* Deal with the poor soul who is trying to force path_info to be
* accepted within the core_handler, where they will let the subreq
* address its contents. This is toggled by the user in the very
* beginning of the fixup phase (here!), so modules should override the user's
* discretion in their own module fixup phase. It is tristate, if
* the user doesn't specify, the result is AP_REQ_DEFAULT_PATH_INFO.
* (which the module may interpret to its own customary behavior.)
* It won't be touched if the value is no longer AP_ACCEPT_PATHINFO_UNSET,
* so any module changing the value prior to the fixup phase
* OVERRIDES the user's choice.
*/
if ((r->used_path_info == AP_REQ_DEFAULT_PATH_INFO)
&& (conf->accept_path_info != AP_ACCEPT_PATHINFO_UNSET)) {
/* No module knew better, and the user coded AcceptPathInfo */
r->used_path_info = conf->accept_path_info;
}
return OK;
}
static int default_handler(request_rec *r)
{
conn_rec *c = r->connection;
apr_bucket_brigade *bb;
apr_bucket *e;
core_dir_config *d;
int errstatus;
apr_file_t *fd = NULL;
apr_status_t status;
/* XXX if/when somebody writes a content-md5 filter we either need to
* remove this support or coordinate when to use the filter vs.
* when to use this code
* The current choice of when to compute the md5 here matches the 1.3
* support fairly closely (unlike 1.3, we don't handle computing md5
* when the charset is translated).
*/
int bld_content_md5;
d = (core_dir_config *)ap_get_core_module_config(r->per_dir_config);
bld_content_md5 = (d->content_md5 == AP_CONTENT_MD5_ON)
&& r->output_filters->frec->ftype != AP_FTYPE_RESOURCE;
ap_allow_standard_methods(r, MERGE_ALLOW, M_GET, M_OPTIONS, M_POST, -1);
/* If filters intend to consume the request body, they must
* register an InputFilter to slurp the contents of the POST
* data from the POST input stream. It no longer exists when
* the output filters are invoked by the default handler.
*/
if ((errstatus = ap_discard_request_body(r)) != OK) {
return errstatus;
}
if (r->method_number == M_GET || r->method_number == M_POST) {
if (r->finfo.filetype == APR_NOFILE) {
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00128)
"File does not exist: %s",
apr_pstrcat(r->pool, r->filename, r->path_info, NULL));
return HTTP_NOT_FOUND;
}
/* Don't try to serve a dir. Some OSs do weird things with
* raw I/O on a dir.
*/
if (r->finfo.filetype == APR_DIR) {
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00129)
"Attempt to serve directory: %s", r->filename);
return HTTP_NOT_FOUND;
}
if ((r->used_path_info != AP_REQ_ACCEPT_PATH_INFO) &&
r->path_info && *r->path_info)
{
/* default to reject */
ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, APLOGNO(00130)
"File does not exist: %s",
apr_pstrcat(r->pool, r->filename, r->path_info, NULL));
return HTTP_NOT_FOUND;
}
/* We understood the (non-GET) method, but it might not be legal for
this particular resource. Check to see if the 'deliver_script'
flag is set. If so, then we go ahead and deliver the file since
it isn't really content (only GET normally returns content).
Note: based on logic further above, the only possible non-GET
method at this point is POST. In the future, we should enable
script delivery for all methods. */
if (r->method_number != M_GET) {
core_request_config *req_cfg;
req_cfg = ap_get_core_module_config(r->request_config);
if (!req_cfg->deliver_script) {
/* The flag hasn't been set for this request. Punt. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00131)
"This resource does not accept the %s method.",
r->method);
return HTTP_METHOD_NOT_ALLOWED;
}
}
if ((status = apr_file_open(&fd, r->filename, APR_READ | APR_BINARY
#if APR_HAS_SENDFILE
| AP_SENDFILE_ENABLED(d->enable_sendfile)
#endif
, 0, r->pool)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, APLOGNO(00132)
"file permissions deny server access: %s", r->filename);
return HTTP_FORBIDDEN;
}
ap_update_mtime(r, r->finfo.mtime);
ap_set_last_modified(r);
ap_set_etag_fd(r, fd);
ap_set_accept_ranges(r);
ap_set_content_length(r, r->finfo.size);
if (bld_content_md5) {
apr_table_setn(r->headers_out, "Content-MD5",
ap_md5digest(r->pool, fd));
}
bb = apr_brigade_create(r->pool, c->bucket_alloc);
if ((errstatus = ap_meets_conditions(r)) != OK) {
apr_file_close(fd);
r->status = errstatus;
}
else {
e = apr_brigade_insert_file(bb, fd, 0, r->finfo.size, r->pool);
#if APR_HAS_MMAP
if (d->enable_mmap == ENABLE_MMAP_OFF) {
(void)apr_bucket_file_enable_mmap(e, 0);
}
#endif
#if APR_MAJOR_VERSION > 1 || (APU_MAJOR_VERSION == 1 && APU_MINOR_VERSION >= 6)
if (d->read_buf_size) {
apr_bucket_file_set_buf_size(e, d->read_buf_size);
}
#endif
}
e = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, e);
status = ap_pass_brigade(r->output_filters, bb);
apr_brigade_cleanup(bb);
if (status == APR_SUCCESS
|| r->status != HTTP_OK
|| c->aborted) {
return OK;
}
else {
/* no way to know what type of error occurred */
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, status, r, APLOGNO(00133)
"default_handler: ap_pass_brigade returned %i",
status);
return AP_FILTER_ERROR;
}
}
else { /* unusual method (not GET or POST) */
if (r->method_number == M_INVALID) {
/* See if this looks like an undecrypted SSL handshake attempt.
* It's safe to look a couple bytes into the_request if it exists, as it's
* always allocated at least MIN_LINE_ALLOC (80) bytes.
*/
if (r->the_request
&& r->the_request[0] == 0x16
&& (r->the_request[1] == 0x2 || r->the_request[1] == 0x3)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00134)
"Invalid method in request %s - possible attempt to establish SSL connection on non-SSL port", r->the_request);
} else {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(00135)
"Invalid method in request %s", r->the_request);
}
return HTTP_NOT_IMPLEMENTED;
}
if (r->method_number == M_OPTIONS) {
return ap_send_http_options(r);
}
return HTTP_METHOD_NOT_ALLOWED;
}
}
/* Optional function coming from mod_logio, used for logging of output
* traffic
*/
APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_out) *ap__logio_add_bytes_out;
APR_OPTIONAL_FN_TYPE(authz_some_auth_required) *ap__authz_ap_some_auth_required;
/* Insist that at least one module will undertake to provide system
* security by dropping startup privileges.
*/
static int sys_privileges = 0;
AP_DECLARE(int) ap_sys_privileges_handlers(int inc)
{
sys_privileges += inc;
return sys_privileges;
}
static int check_errorlog_dir(apr_pool_t *p, server_rec *s)
{
if (!s->error_fname || s->error_fname[0] == '|'
|| strcmp(s->error_fname, "syslog") == 0
|| strncmp(s->error_fname, "syslog:", 7) == 0) {
return APR_SUCCESS;
}
else {
char *abs = ap_server_root_relative(p, s->error_fname);
char *dir = ap_make_dirstr_parent(p, abs);
apr_finfo_t finfo;
apr_status_t rv = apr_stat(&finfo, dir, APR_FINFO_TYPE, p);
if (rv == APR_SUCCESS && finfo.filetype != APR_DIR)
rv = APR_ENOTDIR;
if (rv != APR_SUCCESS) {
const char *desc = "main error log";
if (s->defn_name)
desc = apr_psprintf(p, "error log of vhost defined at %s:%d",
s->defn_name, s->defn_line_number);
ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_EMERG, rv,
ap_server_conf, APLOGNO(02291)
"Cannot access directory '%s' for %s", dir, desc);
return !OK;
}
}
return OK;
}
static int core_check_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
int rv = OK;
while (s) {
if (check_errorlog_dir(ptemp, s) != OK)
rv = !OK;
s = s->next;
}
return rv;
}
static int core_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
{
ap_mutex_init(pconf);
if (!saved_server_config_defines)
init_config_defines(pconf);
apr_pool_cleanup_register(pconf, NULL, reset_config_defines,
apr_pool_cleanup_null);
ap_regcomp_set_default_cflags(AP_REG_DEFAULT);
mpm_common_pre_config(pconf);
return OK;
}
static int core_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
ap__logio_add_bytes_out = APR_RETRIEVE_OPTIONAL_FN(ap_logio_add_bytes_out);
ident_lookup = APR_RETRIEVE_OPTIONAL_FN(ap_ident_lookup);
ap__authz_ap_some_auth_required = APR_RETRIEVE_OPTIONAL_FN(authz_some_auth_required);
authn_ap_auth_type = APR_RETRIEVE_OPTIONAL_FN(authn_ap_auth_type);
authn_ap_auth_name = APR_RETRIEVE_OPTIONAL_FN(authn_ap_auth_name);
access_compat_ap_satisfies = APR_RETRIEVE_OPTIONAL_FN(access_compat_ap_satisfies);
set_banner(pconf);
ap_setup_make_content_type(pconf);
ap_setup_auth_internal(ptemp);
ap_setup_ssl_optional_fns(pconf);
if (!sys_privileges) {
ap_log_error(APLOG_MARK, APLOG_CRIT, 0, NULL, APLOGNO(00136)
"Server MUST relinquish startup privileges before "
"accepting connections. Please ensure mod_unixd "
"or other system security module is loaded.");
return !OK;
}
apr_pool_cleanup_register(pconf, NULL, ap_mpm_end_gen_helper,
apr_pool_cleanup_null);
return OK;
}
static void core_insert_filter(request_rec *r)
{
core_dir_config *conf = (core_dir_config *)
ap_get_core_module_config(r->per_dir_config);
const char *filter, *filters = conf->output_filters;
if (filters) {
while (*filters && (filter = ap_getword(r->pool, &filters, ';'))) {
ap_add_output_filter(filter, NULL, r, r->connection);
}
}
filters = conf->input_filters;
if (filters) {
while (*filters && (filter = ap_getword(r->pool, &filters, ';'))) {
ap_add_input_filter(filter, NULL, r, r->connection);
}
}
}
static apr_size_t num_request_notes = AP_NUM_STD_NOTES;
static apr_status_t reset_request_notes(void *dummy)
{
num_request_notes = AP_NUM_STD_NOTES;
return APR_SUCCESS;
}
AP_DECLARE(apr_size_t) ap_register_request_note(void)
{
apr_pool_cleanup_register(apr_hook_global_pool, NULL, reset_request_notes,
apr_pool_cleanup_null);
return num_request_notes++;
}
AP_DECLARE(void **) ap_get_request_note(request_rec *r, apr_size_t note_num)
{
core_request_config *req_cfg;
if (note_num >= num_request_notes) {
return NULL;
}
req_cfg = (core_request_config *)
ap_get_core_module_config(r->request_config);
if (!req_cfg) {
return NULL;
}
return &(req_cfg->notes[note_num]);
}
AP_DECLARE(apr_socket_t *) ap_get_conn_socket(conn_rec *c)
{
return ap_get_core_module_config(c->conn_config);
}
static int core_create_req(request_rec *r)
{
/* Alloc the config struct and the array of request notes in
* a single block for efficiency
*/
core_request_config *req_cfg;
req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config) +
sizeof(void *) * num_request_notes);
req_cfg->notes = (void **)((char *)req_cfg + sizeof(core_request_config));
/* ### temporarily enable script delivery as the default */
req_cfg->deliver_script = 1;
if (r->main) {
core_request_config *main_req_cfg = (core_request_config *)
ap_get_core_module_config(r->main->request_config);
req_cfg->bb = main_req_cfg->bb;
}
else {
req_cfg->bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
}
ap_set_core_module_config(r->request_config, req_cfg);
return OK;
}
static int core_create_proxy_req(request_rec *r, request_rec *pr)
{
return core_create_req(pr);
}
static conn_rec *core_create_conn(apr_pool_t *ptrans, server_rec *server,
apr_socket_t *csd, long id, void *sbh,
apr_bucket_alloc_t *alloc)
{
apr_status_t rv;
conn_rec *c = (conn_rec *) apr_pcalloc(ptrans, sizeof(conn_rec));
c->sbh = sbh;
ap_update_child_status(c->sbh, SERVER_BUSY_READ, NULL);
/* Got a connection structure, so initialize what fields we can
* (the rest are zeroed out by pcalloc).
*/
c->pool = ptrans;
c->conn_config = ap_create_conn_config(ptrans);
c->notes = apr_table_make(ptrans, 5);
if ((rv = apr_socket_addr_get(&c->local_addr, APR_LOCAL, csd))
!= APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_INFO, rv, server, APLOGNO(00137)
"apr_socket_addr_get(APR_LOCAL)");
apr_socket_close(csd);
return NULL;
}
if (apr_sockaddr_ip_get(&c->local_ip, c->local_addr)) {
#if APR_HAVE_SOCKADDR_UN
if (c->local_addr->family == APR_UNIX) {
c->local_ip = apr_pstrndup(c->pool, c->local_addr->ipaddr_ptr,
c->local_addr->ipaddr_len);
}
else
#endif
c->local_ip = apr_pstrdup(c->pool, "unknown");
}
if ((rv = apr_socket_addr_get(&c->client_addr, APR_REMOTE, csd))
!= APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_INFO, rv, server, APLOGNO(00138)
"apr_socket_addr_get(APR_REMOTE)");
apr_socket_close(csd);
return NULL;
}
if (apr_sockaddr_ip_get(&c->client_ip, c->client_addr)) {
#if APR_HAVE_SOCKADDR_UN
if (c->client_addr->family == APR_UNIX) {
c->client_ip = apr_pstrndup(c->pool, c->client_addr->ipaddr_ptr,
c->client_addr->ipaddr_len);
}
else
#endif
c->client_ip = apr_pstrdup(c->pool, "unknown");
}
c->base_server = server;
c->id = id;
c->bucket_alloc = alloc;
c->clogging_input_filters = 0;
return c;
}
static int core_pre_connection(conn_rec *c, void *csd)
{
core_net_rec *net;
apr_status_t rv;
if (c->master) {
return DONE;
}
net = apr_palloc(c->pool, sizeof(*net));
/* The Nagle algorithm says that we should delay sending partial
* packets in hopes of getting more data. We don't want to do
* this; we are not telnet. There are bad interactions between
* persistent connections and Nagle's algorithm that have very severe
* performance penalties. (Failing to disable Nagle is not much of a
* problem with simple HTTP.)
*/
rv = apr_socket_opt_set(csd, APR_TCP_NODELAY, 1);
if (rv != APR_SUCCESS && rv != APR_ENOTIMPL) {
/* expected cause is that the client disconnected already,
* hence the debug level
*/
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(00139)
"apr_socket_opt_set(APR_TCP_NODELAY)");
}
/* The core filter requires the timeout mode to be set, which
* incidentally sets the socket to be nonblocking. If this
* is not initialized correctly, Linux - for example - will
* be initially blocking, while Solaris will be non blocking
* and any initial read will fail.
*/
rv = apr_socket_timeout_set(csd, c->base_server->timeout);
if (rv != APR_SUCCESS) {
/* expected cause is that the client disconnected already */
ap_log_cerror(APLOG_MARK, APLOG_DEBUG, rv, c, APLOGNO(00140)
"apr_socket_timeout_set");
}
net->c = c;
net->in_ctx = NULL;
net->out_ctx = NULL;
net->client_socket = csd;
ap_set_core_module_config(net->c->conn_config, csd);
ap_add_input_filter_handle(ap_core_input_filter_handle, net, NULL, net->c);
ap_add_output_filter_handle(ap_core_output_filter_handle, net, NULL, net->c);
return DONE;
}
AP_DECLARE(int) ap_pre_connection(conn_rec *c, void *csd)
{
int rc = OK;
rc = ap_run_pre_connection(c, csd);
if (rc != OK && rc != DONE) {
c->aborted = 1;
/*
* In case we errored, the pre_connection hook of the core
* module maybe did not run (it is APR_HOOK_REALLY_LAST) and
* hence we missed to
*
* - Put the socket in c->conn_config
* - Setup core output and input filters
* - Set socket options and timeouts
*
* Hence call it in this case.
*/
if (!ap_get_conn_socket(c)) {
core_pre_connection(c, csd);
}
}
return rc;
}
AP_DECLARE(int) ap_state_query(int query)
{
switch (query) {
case AP_SQ_MAIN_STATE:
return ap_main_state;
case AP_SQ_RUN_MODE:
return ap_run_mode;
case AP_SQ_CONFIG_GEN:
return ap_config_generation;
default:
return AP_SQ_NOT_SUPPORTED;
}
}
static apr_random_t *rng = NULL;
#if APR_HAS_THREADS
static apr_thread_mutex_t *rng_mutex = NULL;
#endif
static void core_child_init(apr_pool_t *pchild, server_rec *s)
{
apr_proc_t proc;
#if APR_HAS_THREADS
int threaded_mpm;
if (ap_mpm_query(AP_MPMQ_IS_THREADED, &threaded_mpm) == APR_SUCCESS
&& threaded_mpm)
{
apr_thread_mutex_create(&rng_mutex, APR_THREAD_MUTEX_DEFAULT, pchild);
}
#endif
/* The MPMs use plain fork() and not apr_proc_fork(), so we have to call
* apr_random_after_fork() manually in the child
*/
proc.pid = getpid();
apr_random_after_fork(&proc);
}
static void core_optional_fn_retrieve(void)
{
ap_init_scoreboard(NULL);
}
AP_CORE_DECLARE(void) ap_random_parent_after_fork(void)
{
/*
* To ensure that the RNG state in the parent changes after the fork, we
* pull some data from the RNG and discard it. This ensures that the RNG
* states in the children are different even after the pid wraps around.
* As we only use apr_random for insecure random bytes, pulling 2 bytes
* should be enough.
* XXX: APR should probably have some dedicated API to do this, but it
* XXX: currently doesn't.
*/
apr_uint16_t data;
apr_random_insecure_bytes(rng, &data, sizeof(data));
}
AP_CORE_DECLARE(void) ap_init_rng(apr_pool_t *p)
{
unsigned char seed[8];
apr_status_t rv;
rng = apr_random_standard_new(p);
do {
rv = apr_generate_random_bytes(seed, sizeof(seed));
if (rv != APR_SUCCESS)
goto error;
apr_random_add_entropy(rng, seed, sizeof(seed));
rv = apr_random_insecure_ready(rng);
} while (rv == APR_ENOTENOUGHENTROPY);
if (rv == APR_SUCCESS)
return;
error:
ap_log_error(APLOG_MARK, APLOG_CRIT, rv, NULL, APLOGNO(00141)
"Could not initialize random number generator");
exit(1);
}
AP_DECLARE(void) ap_random_insecure_bytes(void *buf, apr_size_t size)
{
#if APR_HAS_THREADS
if (rng_mutex)
apr_thread_mutex_lock(rng_mutex);
#endif
/* apr_random_insecure_bytes can only fail with APR_ENOTENOUGHENTROPY,
* and we have ruled that out during initialization. Therefore we don't
* need to check the return code.
*/
apr_random_insecure_bytes(rng, buf, size);
#if APR_HAS_THREADS
if (rng_mutex)
apr_thread_mutex_unlock(rng_mutex);
#endif
}
/*
* Finding a random number in a range.
* n' = a + n(b-a+1)/(M+1)
* where:
* n' = random number in range
* a = low end of range
* b = high end of range
* n = random number of 0..M
* M = maxint
* Algorithm 'borrowed' from PHP's rand() function.
*/
#define RAND_RANGE(__n, __min, __max, __tmax) \
(__n) = (__min) + (long) ((double) ((__max) - (__min) + 1.0) * ((__n) / ((__tmax) + 1.0)))
AP_DECLARE(apr_uint32_t) ap_random_pick(apr_uint32_t min, apr_uint32_t max)
{
apr_uint32_t number;
#if (!__GNUC__ || __GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8) || \
!__sparc__ || APR_SIZEOF_VOIDP != 8)
/* This triggers a gcc bug on sparc/64bit with gcc < 4.8, PR 52900 */
if (max < 16384) {
apr_uint16_t num16;
ap_random_insecure_bytes(&num16, sizeof(num16));
RAND_RANGE(num16, min, max, APR_UINT16_MAX);
number = num16;
}
else
#endif
{
ap_random_insecure_bytes(&number, sizeof(number));
RAND_RANGE(number, min, max, APR_UINT32_MAX);
}
return number;
}
static apr_status_t core_insert_network_bucket(conn_rec *c,
apr_bucket_brigade *bb,
apr_socket_t *socket)
{
apr_bucket *e = apr_bucket_socket_create(socket, c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, e);
return APR_SUCCESS;
}
static apr_status_t core_dirwalk_stat(apr_finfo_t *finfo, request_rec *r,
apr_int32_t wanted)
{
return apr_stat(finfo, r->filename, wanted, r->pool);
}
static void core_dump_config(apr_pool_t *p, server_rec *s)
{
core_server_config *sconf = ap_get_core_module_config(s->module_config);
apr_file_t *out = NULL;
const char *tmp;
const char **defines;
int i;
if (!ap_exists_config_define("DUMP_RUN_CFG"))
return;
apr_file_open_stdout(&out, p);
apr_file_printf(out, "ServerRoot: \"%s\"\n", ap_server_root);
tmp = ap_server_root_relative(p, sconf->ap_document_root);
apr_file_printf(out, "Main DocumentRoot: \"%s\"\n", tmp);
if (s->error_fname[0] != '|'
&& strcmp(s->error_fname, "syslog") != 0
&& strncmp(s->error_fname, "syslog:", 7) != 0)
tmp = ap_server_root_relative(p, s->error_fname);
else
tmp = s->error_fname;
apr_file_printf(out, "Main ErrorLog: \"%s\"\n", tmp);
if (ap_scoreboard_fname) {
tmp = ap_server_root_relative(p, ap_scoreboard_fname);
apr_file_printf(out, "ScoreBoardFile: \"%s\"\n", tmp);
}
ap_dump_mutexes(p, s, out);
ap_mpm_dump_pidfile(p, out);
defines = (const char **)ap_server_config_defines->elts;
for (i = 0; i < ap_server_config_defines->nelts; i++) {
const char *name = defines[i];
const char *val = NULL;
if (server_config_defined_vars)
val = apr_table_get(server_config_defined_vars, name);
if (val)
apr_file_printf(out, "Define: %s=%s\n", name, val);
else
apr_file_printf(out, "Define: %s\n", name);
}
}
static int core_upgrade_handler(request_rec *r)
{
conn_rec *c = r->connection;
const char *upgrade;
if (c->master) {
/* Not possible to perform an HTTP/1.1 upgrade from a slave
* connection. */
return DECLINED;
}
upgrade = apr_table_get(r->headers_in, "Upgrade");
if (upgrade && *upgrade) {
const char *conn = apr_table_get(r->headers_in, "Connection");
if (ap_find_token(r->pool, conn, "upgrade")) {
apr_array_header_t *offers = NULL;
const char *err;
err = ap_parse_token_list_strict(r->pool, upgrade, &offers, 0);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(02910)
"parsing Upgrade header: %s", err);
return DECLINED;
}
if (offers && offers->nelts > 0) {
const char *protocol = ap_select_protocol(c, r, NULL, offers);
if (protocol && strcmp(protocol, ap_get_protocol(c))) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(02909)
"Upgrade selects '%s'", protocol);
/* Let the client know what we are upgrading to. */
apr_table_clear(r->headers_out);
apr_table_setn(r->headers_out, "Upgrade", protocol);
apr_table_setn(r->headers_out, "Connection", "Upgrade");
r->status = HTTP_SWITCHING_PROTOCOLS;
r->status_line = ap_get_status_line(r->status);
ap_send_interim_response(r, 1);
ap_switch_protocol(c, r, r->server, protocol);
/* make sure httpd closes the connection after this */
c->keepalive = AP_CONN_CLOSE;
return DONE;
}
}
}
}
else if (!c->keepalives) {
/* first request on a master connection, if we have protocols other
* than the current one enabled here, announce them to the
* client. If the client is already talking a protocol with requests
* on slave connections, leave it be. */
const apr_array_header_t *upgrades;
ap_get_protocol_upgrades(c, r, NULL, 0, &upgrades);
if (upgrades && upgrades->nelts > 0) {
char *protocols = apr_array_pstrcat(r->pool, upgrades, ',');
apr_table_setn(r->headers_out, "Upgrade", protocols);
apr_table_setn(r->headers_out, "Connection", "Upgrade");
}
}
return DECLINED;
}
static int core_upgrade_storage(request_rec *r)
{
if ((r->method_number == M_OPTIONS) && r->uri && (r->uri[0] == '*') &&
(r->uri[1] == '\0')) {
return core_upgrade_handler(r);
}
return DECLINED;
}
static apr_status_t core_get_pollfd_from_conn(conn_rec *c,
struct apr_pollfd_t *pfd,
apr_interval_time_t *ptimeout)
{
if (c && !c->master) {
pfd->desc_type = APR_POLL_SOCKET;
pfd->desc.s = ap_get_conn_socket(c);
if (ptimeout) {
apr_socket_timeout_get(pfd->desc.s, ptimeout);
}
return APR_SUCCESS;
}
return APR_ENOTIMPL;
}
AP_CORE_DECLARE(apr_status_t) ap_get_pollfd_from_conn(conn_rec *c,
struct apr_pollfd_t *pfd,
apr_interval_time_t *ptimeout)
{
return ap_run_get_pollfd_from_conn(c, pfd, ptimeout);
}
static void register_hooks(apr_pool_t *p)
{
errorlog_hash = apr_hash_make(p);
ap_register_log_hooks(p);
ap_register_config_hooks(p);
ap_expr_init(p);
/* create_connection and pre_connection should always be hooked
* APR_HOOK_REALLY_LAST by core to give other modules the opportunity
* to install alternate network transports and stop other functions
* from being run.
*/
ap_hook_create_connection(core_create_conn, NULL, NULL,
APR_HOOK_REALLY_LAST);
ap_hook_pre_connection(core_pre_connection, NULL, NULL,
APR_HOOK_REALLY_LAST);
ap_hook_pre_config(core_pre_config, NULL, NULL, APR_HOOK_REALLY_FIRST);
ap_hook_post_config(core_post_config,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_check_config(core_check_config,NULL,NULL,APR_HOOK_FIRST);
ap_hook_test_config(core_dump_config,NULL,NULL,APR_HOOK_FIRST);
ap_hook_translate_name(ap_core_translate,NULL,NULL,APR_HOOK_REALLY_LAST);
ap_hook_map_to_storage(core_upgrade_storage,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_map_to_storage(core_map_to_storage,NULL,NULL,APR_HOOK_REALLY_LAST);
ap_hook_open_logs(ap_open_logs,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_child_init(core_child_init,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_child_init(ap_logs_child_init,NULL,NULL,APR_HOOK_MIDDLE);
ap_hook_handler(core_upgrade_handler,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_handler(default_handler,NULL,NULL,APR_HOOK_REALLY_LAST);
/* FIXME: I suspect we can eliminate the need for these do_nothings - Ben */
ap_hook_type_checker(do_nothing,NULL,NULL,APR_HOOK_REALLY_LAST);
ap_hook_fixups(core_override_type,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_create_request(core_create_req, NULL, NULL, APR_HOOK_MIDDLE);
APR_OPTIONAL_HOOK(proxy, create_req, core_create_proxy_req, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_pre_mpm(ap_create_scoreboard, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_child_status(ap_core_child_status, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_insert_network_bucket(core_insert_network_bucket, NULL, NULL,
APR_HOOK_REALLY_LAST);
ap_hook_dirwalk_stat(core_dirwalk_stat, NULL, NULL, APR_HOOK_REALLY_LAST);
ap_hook_open_htaccess(ap_open_htaccess, NULL, NULL, APR_HOOK_REALLY_LAST);
ap_hook_optional_fn_retrieve(core_optional_fn_retrieve, NULL, NULL,
APR_HOOK_MIDDLE);
ap_hook_get_pollfd_from_conn(core_get_pollfd_from_conn, NULL, NULL,
APR_HOOK_REALLY_LAST);
/* register the core's insert_filter hook and register core-provided
* filters
*/
ap_hook_insert_filter(core_insert_filter, NULL, NULL, APR_HOOK_MIDDLE);
ap_core_input_filter_handle =
ap_register_input_filter("CORE_IN", ap_core_input_filter,
NULL, AP_FTYPE_NETWORK);
ap_content_length_filter_handle =
ap_register_output_filter("CONTENT_LENGTH", ap_content_length_filter,
NULL, AP_FTYPE_PROTOCOL);
ap_core_output_filter_handle =
ap_register_output_filter("CORE", ap_core_output_filter,
NULL, AP_FTYPE_NETWORK);
ap_subreq_core_filter_handle =
ap_register_output_filter("SUBREQ_CORE", ap_sub_req_output_filter,
NULL, AP_FTYPE_CONTENT_SET);
ap_old_write_func =
ap_register_output_filter("OLD_WRITE", ap_old_write_filter,
NULL, AP_FTYPE_RESOURCE - 10);
}
AP_DECLARE_MODULE(core) = {
MPM20_MODULE_STUFF,
AP_PLATFORM_REWRITE_ARGS_HOOK, /* hook to run before apache parses args */
create_core_dir_config, /* create per-directory config structure */
merge_core_dir_configs, /* merge per-directory config structures */
create_core_server_config, /* create per-server config structure */
merge_core_server_configs, /* merge per-server config structures */
core_cmds, /* command apr_table_t */
register_hooks /* register hooks */
};
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