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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"
#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_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 "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) 0)
/* LimitXMLRequestBody handling */
#define AP_LIMIT_UNSET ((long) -1)
#define AP_DEFAULT_LIMIT_XML_BODY ((apr_size_t)1000000)
#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
APR_HOOK_STRUCT(
APR_HOOK_LINK(get_mgmt_items)
APR_HOOK_LINK(insert_network_bucket)
)
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)
/* 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;
static apr_array_header_t *saved_server_config_defines = NULL;
static apr_table_t *server_config_defined_vars = 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;
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;
int i;
/* 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->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_strings == NULL) {
conf->response_code_strings = new->response_code_strings;
}
else if (new->response_code_strings != NULL) {
/* If we merge, the merge-result must have its own array
*/
conf->response_code_strings = apr_pmemdup(a,
base->response_code_strings,
sizeof(*conf->response_code_strings) * RESPONSE_CODES);
for (i = 0; i < RESPONSE_CODES; ++i) {
if (new->response_code_strings[i] != NULL) {
conf->response_code_strings[i] = new->response_code_strings[i];
}
}
}
/* Otherwise we simply use the base->response_code_strings 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->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;
}
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;
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");
#else
apr_table_setn(conf->accf_map, "http", "data");
apr_table_setn(conf->accf_map, "https", "data");
#endif
}
/* pcalloc'ed - we have NULL's/0's
else ** is_virtual ** {
conf->ap_document_root = NULL;
conf->access_name = NULL;
conf->accf_map = NULL;
}
*/
/* 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;
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;
/* 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;
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);
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 autorization
*/
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);
/* 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_strings == NULL) {
return NULL;
}
if (dirconf->response_code_strings[error_index] == &errordocument_default) {
return NULL;
}
return dirconf->response_code_strings[error_index];
}
/* Code from Harald Hanche-Olsen <hanche@imf.unit.no> */
static APR_INLINE void do_double_reverse (conn_rec *conn)
{
apr_sockaddr_t *sa;
apr_status_t rv;
if (conn->double_reverse) {
/* already done */
return;
}
if (conn->remote_host == NULL || conn->remote_host[0] == '\0') {
/* single reverse failed, so don't bother */
conn->double_reverse = -1;
return;
}
rv = apr_sockaddr_info_get(&sa, conn->remote_host, APR_UNSPEC, 0, 0, conn->pool);
if (rv == APR_SUCCESS) {
while (sa) {
if (apr_sockaddr_equal(sa, conn->client_addr)) {
conn->double_reverse = 1;
return;
}
sa = sa->next;
}
}
conn->double_reverse = -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) {
do_double_reverse(conn);
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) {
do_double_reverse(conn);
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;
}
}
}
/*
* 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;
}
/*****************************************************************
*
* Commands... this module handles almost all of the NCSA httpd.conf
* commands, but most of the old srm.conf is in the 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 (strcasecmp(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_LIMIT | NOT_IN_DIR_LOC_FILE))
&& 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/Location/Files> "
"section", 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"))))) {
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_LOC_FILE);
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, '}'))) {
char *name = apr_pstrndup(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 = 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;
server_config_defined_vars = 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)) {
char **newv = (char **)apr_array_push(ap_server_config_defines);
*newv = apr_pstrdup(cmd->pool, 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;
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 = (char **)ap_server_config_defines->elts;
for (i = 0; i < ap_server_config_defines->nelts; i++) {
if (strcmp(defines[i], name) == 0) {
defines[i] = 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_LOC_FILE);
if (err != NULL) {
return err;
}
conf->gprof_dir = 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 (!strcasecmp(arg, "Off")) {
d->add_default_charset = ADD_DEFAULT_CHARSET_OFF;
}
else if (!strcasecmp(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_LOC_FILE);
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->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 "DocumentRoot must be a directory";
}
}
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)
"cannot use a full URL in a 401 ErrorDocument "
"directive --- ignoring!");
}
else { /* Store it... */
if (conf->response_code_strings == NULL) {
conf->response_code_strings =
apr_pcalloc(cmd->pool,
sizeof(*conf->response_code_strings) *
RESPONSE_CODES);
}
if (strcmp(msg, "default") == 0) {
/* special case: ErrorDocument 404 default restores the
* canned server error response
*/
conf->response_code_strings[index_number] = &errordocument_default;
}
else {
/* 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.
*/
conf->response_code_strings[index_number] = (what == MSG) ?
apr_pstrcat(cmd->pool, "\"", msg, NULL) :
apr_pstrdup(cmd->pool, msg);
}
}
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 (!strcasecmp(w, "Indexes")) {
opt = OPT_INDEXES;
}
else if (!strcasecmp(w, "Includes")) {
/* If Includes is permitted, both Includes and
* IncludesNOEXEC may be changed. */
opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
}
else if (!strcasecmp(w, "IncludesNOEXEC")) {
opt = OPT_INCLUDES;
}
else if (!strcasecmp(w, "FollowSymLinks")) {
opt = OPT_SYM_LINKS;
}
else if (!strcasecmp(w, "SymLinksIfOwnerMatch")) {
opt = OPT_SYM_OWNER;
}
else if (!strcasecmp(w, "ExecCGI")) {
opt = OPT_EXECCGI;
}
else if (!strcasecmp(w, "MultiViews")) {
opt = OPT_MULTI;
}
else if (!strcasecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
opt = OPT_MULTI|OPT_EXECCGI;
}
else if (!strcasecmp(w, "None")) {
opt = OPT_NONE;
}
else if (!strcasecmp(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 (!strcasecmp(w, "Limit")) {
d->override |= OR_LIMIT;
}
else if (!strcasecmp(k, "Options")) {
d->override |= OR_OPTIONS;
if (v)
set_allow_opts(cmd, &(d->override_opts), v);
else
d->override_opts = OPT_ALL;
}
else if (!strcasecmp(w, "FileInfo")) {
d->override |= OR_FILEINFO;
}
else if (!strcasecmp(w, "AuthConfig")) {
d->override |= OR_AUTHCFG;
}
else if (!strcasecmp(w, "Indexes")) {
d->override |= OR_INDEXES;
}
else if (!strcasecmp(w, "Nonfatal")) {
if (!strcasecmp(v, "Override")) {
d->override |= NONFATAL_OVERRIDE;
}
else if (!strcasecmp(v, "Unknown")) {
d->override |= NONFATAL_UNKNOWN;
}
else if (!strcasecmp(v, "All")) {
d->override |= NONFATAL_ALL;
}
}
else if (!strcasecmp(w, "None")) {
d->override = OR_NONE;
}
else if (!strcasecmp(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_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 (!strcasecmp(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_set(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 (!strcasecmp(w, "Indexes")) {
opt = OPT_INDEXES;
}
else if (!strcasecmp(w, "Includes")) {
opt = (OPT_INCLUDES | OPT_INC_WITH_EXEC);
}
else if (!strcasecmp(w, "IncludesNOEXEC")) {
opt = OPT_INCLUDES;
}
else if (!strcasecmp(w, "FollowSymLinks")) {
opt = OPT_SYM_LINKS;
}
else if (!strcasecmp(w, "SymLinksIfOwnerMatch")) {
opt = OPT_SYM_OWNER;
}
else if (!strcasecmp(w, "ExecCGI")) {
opt = OPT_EXECCGI;
}
else if (!strcasecmp(w, "MultiViews")) {
opt = OPT_MULTI;
}
else if (!strcasecmp(w, "RunScripts")) { /* AI backcompat. Yuck */
opt = OPT_MULTI|OPT_EXECCGI;
}
else if (!strcasecmp(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 (!strcasecmp(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 ((strcasecmp(arg, "off") != 0) && (strcasecmp(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;
}
/*
* 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 (strcasecmp(token, "None") == 0) {
if (action != '*') {
valid = 0;
}
else {
cfg->etag_bits = bit = ETAG_NONE;
explicit = 1;
}
}
else if (strcasecmp(token, "All") == 0) {
if (action != '*') {
valid = 0;
}
else {
explicit = 1;
cfg->etag_bits = bit = ETAG_ALL;
}
}
else if (strcasecmp(token, "Size") == 0) {
bit = ETAG_SIZE;
}
else if ((strcasecmp(token, "LMTime") == 0)
|| (strcasecmp(token, "MTime") == 0)
|| (strcasecmp(token, "LastModified") == 0)) {
bit = ETAG_MTIME;
}
else if (strcasecmp(token, "INode") == 0) {
bit = ETAG_INODE;
}
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 (strcasecmp(arg, "on") == 0) {
d->enable_mmap = ENABLE_MMAP_ON;
}
else if (strcasecmp(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 (strcasecmp(arg, "on") == 0) {
d->enable_sendfile = ENABLE_SENDFILE_ON;
}
else if (strcasecmp(arg, "off") == 0) {
d->enable_sendfile = ENABLE_SENDFILE_OFF;
}
else {
return "parameter must be 'on' or 'off'";
}
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_pstrndup(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 resorce restriction
* is always checked before method handling, so register it.
*/
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_LOC_FILE);
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);
/* 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_LOC_FILE);
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;
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;
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);
/* 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;
}
static const char *start_ifmod(cmd_parms *cmd, void *mconfig, const char *arg)
{
const char *endp = ap_strrchr_c(arg, '>');
int not = (arg[0] == '!');
module *found;
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (not) {
arg++;
}
if (!arg[0]) {
return missing_container_arg(cmd);
}
found = find_module(cmd->server, arg);
if ((!not && found) || (not && !found)) {
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, "<IfModule");
*(ap_directive_t **)mconfig = current;
return retval;
}
else {
*(ap_directive_t **)mconfig = NULL;
return ap_soak_end_container(cmd, "<IfModule");
}
}
AP_DECLARE(int) ap_exists_config_define(const char *name)
{
char **defines;
int i;
defines = (char **)ap_server_config_defines->elts;
for (i = 0; i < ap_server_config_defines->nelts; i++) {
if (strcmp(defines[i], name) == 0) {
return 1;
}
}
return 0;
}
static const char *start_ifdefine(cmd_parms *cmd, void *dummy, const char *arg)
{
const char *endp;
int defined;
int not = 0;
endp = ap_strrchr_c(arg, '>');
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->temp_pool, arg, endp - arg);
if (arg[0] == '!') {
not = 1;
arg++;
}
if (!arg[0]) {
return missing_container_arg(cmd);
}
defined = ap_exists_config_define(arg);
if ((!not && defined) || (not && !defined)) {
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, "<IfDefine");
*(ap_directive_t **)dummy = current;
return retval;
}
else {
*(ap_directive_t **)dummy = NULL;
return ap_soak_end_container(cmd, "<IfDefine");
}
}
/* 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_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_LOC_FILE);
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_LOC_FILE);
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_LOC_FILE);
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 (strcasecmp(arg, "On") == 0) {
d->server_signature = srv_sig_on;
}
else if (strcasecmp(arg, "Off") == 0) {
d->server_signature = srv_sig_off;
}
else if (strcasecmp(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->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_LOC_FILE);
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 == strcasecmp(arg, "on")) {
d->allow_encoded_slashes = 1;
d->decode_encoded_slashes = 1; /* for compatibility with 2.0 & 2.2 */
} else if (0 == strcasecmp(arg, "off")) {
d->allow_encoded_slashes = 0;
d->decode_encoded_slashes = 0;
} else if (0 == strcasecmp(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 (!strcasecmp(arg, "on")) {
d->hostname_lookups = HOSTNAME_LOOKUP_ON;
}
else if (!strcasecmp(arg, "off")) {
d->hostname_lookups = HOSTNAME_LOOKUP_OFF;
}
else if (!strcasecmp(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_LOC_FILE);
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 (strcasecmp(arg, "on") == 0) {
d->accept_path_info = AP_REQ_ACCEPT_PATH_INFO;
}
else if (strcasecmp(arg, "off") == 0) {
d->accept_path_info = AP_REQ_REJECT_PATH_INFO;
}
else if (strcasecmp(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 (strcasecmp(arg, "on") == 0) {
d->use_canonical_name = USE_CANONICAL_NAME_ON;
}
else if (strcasecmp(arg, "off") == 0) {
d->use_canonical_name = USE_CANONICAL_NAME_OFF;
}
else if (strcasecmp(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 (strcasecmp(arg, "on") == 0) {
d->use_canonical_phys_port = USE_CANONICAL_PHYS_PORT_ON;
}
else if (strcasecmp(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;
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);
}
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 *arg1, const char *arg2)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (!strcasecmp(arg1, "OS")) {
ap_server_tokens = SrvTk_OS;
}
else if (!strcasecmp(arg1, "Min") || !strcasecmp(arg1, "Minimal")) {
ap_server_tokens = SrvTk_MINIMAL;
}
else if (!strcasecmp(arg1, "Major")) {
ap_server_tokens = SrvTk_MAJOR;
}
else if (!strcasecmp(arg1, "Minor") ) {
ap_server_tokens = SrvTk_MINOR;
}
else if (!strcasecmp(arg1, "Prod") || !strcasecmp(arg1, "ProductOnly")) {
ap_server_tokens = SrvTk_PRODUCT_ONLY;
}
else {
ap_server_tokens = SrvTk_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_LOC_FILE);
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_LOC_FILE);
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_LOC_FILE);
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.";
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 (!strcasecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!strcasecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!strcasecmp(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 (!strcasecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!strcasecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!strcasecmp(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 (!strcasecmp(arg, "none")) {
val = AP_MAXRANGES_NORANGES;
}
else if (!strcasecmp(arg, "default")) {
val = AP_MAXRANGES_DEFAULT;
}
else if (!strcasecmp(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;
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)
{
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 (strcasecmp(arg1, "on") == 0) {
conf->trace_enable = AP_TRACE_ENABLE;
}
else if (strcasecmp(arg1, "off") == 0) {
conf->trace_enable = AP_TRACE_DISABLE;
}
else if (strcasecmp(arg1, "extended") == 0) {
conf->trace_enable = AP_TRACE_EXTENDED;
}
else {
return "TraceEnable must be one of 'on', 'off', or 'extended'";
}
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;