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apache/server/core.c
Jeff Trawick c940ea5b58 use existing directive name ThreadStackSize instead of 
WorkerStackSize

as made obvious by: Brad Nicholes


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@102975 13f79535-47bb-0310-9956-ffa450edef68
2004-03-15 23:08:41 +00:00

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/* Copyright 2001-2004 The Apache Software Foundation
*
* Licensed 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_hooks.h"
#define APR_WANT_IOVEC
#define APR_WANT_STRFUNC
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#define CORE_PRIVATE
#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 "mpm.h"
#include "mpm_common.h"
#include "scoreboard.h"
#include "mod_core.h"
#include "mod_proxy.h"
#include "ap_listen.h"
/* LimitXMLRequestBody handling */
#define AP_LIMIT_UNSET ((long) -1)
#define AP_DEFAULT_LIMIT_XML_BODY ((size_t)1000000)
#define AP_MIN_SENDFILE_BYTES (256)
APR_HOOK_STRUCT(
APR_HOOK_LINK(get_mgmt_items)
)
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)
/* 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., do handle just enough
* to allow a server with the core module ONLY to actually serve documents
* (though it slaps DefaultType on all of 'em); this was useful in testing,
* but may not be worth preserving.
*
* This file could almost be mod_core.c, except for the stuff which affects
* the http_conf_globals.
*/
/* 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_net_time_filter_handle;
AP_DECLARE_DATA ap_filter_rec_t *ap_core_input_filter_handle;
static void *create_core_dir_config(apr_pool_t *a, char *dir)
{
core_dir_config *conf;
int i;
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_ALL;
conf->opts_add = conf->opts_remove = OPT_NONE;
conf->override = dir ? OR_UNSET : OR_UNSET|OR_ALL;
conf->content_md5 = 2;
conf->accept_path_info = 3;
conf->use_canonical_name = USE_CANONICAL_NAME_UNSET;
conf->hostname_lookups = HOSTNAME_LOOKUP_UNSET;
conf->satisfy = apr_palloc(a, sizeof(*conf->satisfy) * METHODS);
for (i = 0; i < METHODS; ++i) {
conf->satisfy[i] = SATISFY_NOSPEC;
}
#ifdef RLIMIT_CPU
conf->limit_cpu = NULL;
#endif
#if defined(RLIMIT_DATA) || defined(RLIMIT_VMEM) || defined(RLIMIT_AS)
conf->limit_mem = NULL;
#endif
#ifdef RLIMIT_NPROC
conf->limit_nproc = NULL;
#endif
conf->limit_req_body = 0;
conf->limit_xml_body = AP_LIMIT_UNSET;
conf->sec_file = apr_array_make(a, 2, sizeof(ap_conf_vector_t *));
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
*/
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;
return (void *)conf;
}
/*
* Overlay one hash table of ct_output_filters onto another
*/
static void *merge_ct_filters(apr_pool_t *p,
const void *key,
apr_ssize_t klen,
const void *overlay_val,
const void *base_val,
const void *data)
{
ap_filter_rec_t *cur;
const ap_filter_rec_t *overlay_info = (const ap_filter_rec_t *)overlay_val;
const ap_filter_rec_t *base_info = (const ap_filter_rec_t *)base_val;
cur = NULL;
while (overlay_info) {
ap_filter_rec_t *new;
new = apr_pcalloc(p, sizeof(ap_filter_rec_t));
new->name = apr_pstrdup(p, overlay_info->name);
new->next = cur;
cur = new;
overlay_info = overlay_info->next;
}
while (base_info) {
ap_filter_rec_t *f;
int found = 0;
/* We can't have dups. */
f = cur;
while (f) {
if (!strcasecmp(base_info->name, f->name)) {
found = 1;
break;
}
f = f->next;
}
if (!found) {
f = apr_pcalloc(p, sizeof(ap_filter_rec_t));
f->name = apr_pstrdup(p, base_info->name);
f->next = cur;
cur = f;
}
base_info = base_info->next;
}
return cur;
}
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_palloc(a, sizeof(core_dir_config));
memcpy(conf, 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;
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 ((base->opts & OPT_INCNOEXEC) && (new->opts & OPT_INCLUDES)) {
conf->opts = (conf->opts & ~OPT_INCNOEXEC) | OPT_INCLUDES;
}
}
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->ap_default_type) {
conf->ap_default_type = new->ap_default_type;
}
if (new->ap_auth_type) {
conf->ap_auth_type = new->ap_auth_type;
}
if (new->ap_auth_name) {
conf->ap_auth_name = new->ap_auth_name;
}
if (new->ap_requires) {
conf->ap_requires = new->ap_requires;
}
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 it's own array
*/
conf->response_code_strings = apr_palloc(a,
sizeof(*conf->response_code_strings) * RESPONSE_CODES);
memcpy(conf->response_code_strings, 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 & 2) == 0) {
conf->content_md5 = new->content_md5;
}
if (new->accept_path_info != 3) {
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;
}
#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) {
conf->limit_req_body = new->limit_req_body;
}
if (new->limit_xml_body != AP_LIMIT_UNSET)
conf->limit_xml_body = new->limit_xml_body;
else
conf->limit_xml_body = base->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 it's own array
*/
conf->sec_file = apr_array_append(a, base->sec_file, new->sec_file);
}
/* Otherwise we simply use the base->sec_file array
*/
for (i = 0; i < METHODS; ++i) {
if (new->satisfy[i] != SATISFY_NOSPEC) {
conf->satisfy[i] = new->satisfy[i];
}
}
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;
}
if (conf->ct_output_filters && new->ct_output_filters) {
conf->ct_output_filters = apr_hash_merge(a,
new->ct_output_filters,
conf->ct_output_filters,
merge_ct_filters,
NULL);
}
else if (new->ct_output_filters) {
conf->ct_output_filters = apr_hash_copy(a, new->ct_output_filters);
}
else if (conf->ct_output_filters) {
/* That memcpy above isn't enough. */
conf->ct_output_filters = apr_hash_copy(a, base->ct_output_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->opts_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;
return (void*)conf;
}
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));
#ifdef GPROF
conf->gprof_dir = NULL;
#endif
conf->access_name = is_virtual ? NULL : DEFAULT_ACCESS_FNAME;
conf->ap_document_root = is_virtual ? NULL : DOCUMENT_LOCATION;
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 *));
/* recursion stopper */
conf->redirect_limit = 0; /* 0 == unset */
conf->subreq_limit = 0;
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;
conf = (core_server_config *)apr_palloc(p, sizeof(core_server_config));
memcpy(conf, virt, sizeof(core_server_config));
if (!conf->access_name) {
conf->access_name = base->access_name;
}
if (!conf->ap_document_root) {
conf->ap_document_root = base->ap_document_root;
}
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);
conf->redirect_limit = virt->redirect_limit
? virt->redirect_limit
: base->redirect_limit;
conf->subreq_limit = virt->subreq_limit
? virt->subreq_limit
: base->subreq_limit;
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_module_config(s->module_config,
&core_module);
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_module_config(s->module_config,
&core_module);
void **new_space = (void **)apr_array_push(sconf->sec_url);
*new_space = url_config;
}
AP_CORE_DECLARE(void) ap_add_file_conf(core_dir_config *conf, void *url_config)
{
void **new_space = (void **)apr_array_push(conf->sec_file);
*new_space = url_config;
}
/* 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_module_config(a->elt, &core_module);
core_b = ap_get_module_config(b->elt, &core_module);
/* 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_module_config(s->module_config, &core_module);
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_module_config(r->per_dir_config, &core_module);
return conf->opts;
}
AP_DECLARE(int) ap_allow_overrides(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->override;
}
AP_DECLARE(const char *) ap_auth_type(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->ap_auth_type;
}
AP_DECLARE(const char *) ap_auth_name(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->ap_auth_name;
}
AP_DECLARE(const char *) ap_default_type(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->ap_default_type
? conf->ap_default_type
: DEFAULT_CONTENT_TYPE;
}
AP_DECLARE(const char *) ap_document_root(request_rec *r) /* Don't use this! */
{
core_server_config *conf;
conf = (core_server_config *)ap_get_module_config(r->server->module_config,
&core_module);
return conf->ap_document_root;
}
AP_DECLARE(const apr_array_header_t *) ap_requires(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->ap_requires;
}
AP_DECLARE(int) ap_satisfies(request_rec *r)
{
core_dir_config *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
return conf->satisfy[r->method_number];
}
/* 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 *conf;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
if (conf->response_code_strings == NULL) {
return NULL;
}
return conf->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->remote_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_module_config(dir_config, &core_module))
->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->remote_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->remote_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. We never
* trust the port passed in the client's headers, we always use the
* port of the actual socket.
*
* 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;
d = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
if (d->use_canonical_name == USE_CANONICAL_NAME_OFF) {
return r->hostname ? r->hostname : r->server->server_hostname;
}
if (d->use_canonical_name == 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);
}
}
return conn->local_host;
}
/* default */
return r->server->server_hostname;
}
/*
* 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]").
*/
static const char *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_psprintf(r->pool, "[%s]", plain_server_name);
}
#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_module_config(r->per_dir_config, &core_module);
if (d->use_canonical_name == USE_CANONICAL_NAME_OFF
|| d->use_canonical_name == USE_CANONICAL_NAME_DNS) {
/* With UseCanonicalName off Apache will form self-referential
* URLs using the hostname and port supplied by the client if
* any are supplied (otherwise it will use the canonical name).
*/
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 { /* d->use_canonical_name == 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.
*/
port = r->server->port ? r->server->port :
r->connection->local_addr->port ? r->connection->local_addr->port :
ap_default_port(r);
}
/* default */
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 = get_server_name_for_url(r);
if (ap_is_default_port(port, r)) {
return apr_pstrcat(p, ap_http_method(r), "://", host, uri, NULL);
}
return apr_psprintf(p, "%s://%s:%u%s", ap_http_method(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_module_config(r->per_dir_config, &core_module);
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) && cmd->limited != -1) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within <Limit> section", 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_module_config(sconf, &core_module);
const char *err = ap_check_cmd_context(cmd,
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
conf->access_name = apr_pstrdup(cmd->pool, arg);
return NULL;
}
#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_module_config(sconf, &core_module);
const char *err = ap_check_cmd_context(cmd,
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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_module_config(sconf, &core_module);
const char *err = ap_check_cmd_context(cmd,
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
/* Make it absolute, relative to ServerRoot */
arg = ap_server_root_relative(cmd->pool, arg);
/* TODO: ap_configtestonly && ap_docrootcheck && */
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,
"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_dir_config *conf =
ap_get_module_config(r->per_dir_config, &core_module);
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;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
/* 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,
"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);
}
/* 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_override(cmd_parms *cmd, void *d_, const char *l)
{
core_dir_config *d = d_;
char *w;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return 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,
"Useless use of AllowOverride in line %d.",
cmd->directive->line_num);
}
d->override = OR_NONE;
while (l[0]) {
w = ap_getword_conf(cmd->pool, &l);
if (!strcasecmp(w, "Limit")) {
d->override |= OR_LIMIT;
}
else if (!strcasecmp(w, "Options")) {
d->override |= OR_OPTIONS;
}
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, "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_options(cmd_parms *cmd, void *d_, const char *l)
{
core_dir_config *d = d_;
allow_options_t opt;
int first = 1;
char action;
while (l[0]) {
char *w = ap_getword_conf(cmd->pool, &l);
action = '\0';
if (*w == '+' || *w == '-') {
action = *(w++);
}
else if (first) {
d->opts = OPT_NONE;
first = 0;
}
if (!strcasecmp(w, "Indexes")) {
opt = OPT_INDEXES;
}
else if (!strcasecmp(w, "Includes")) {
opt = OPT_INCLUDES;
}
else if (!strcasecmp(w, "IncludesNOEXEC")) {
opt = (OPT_INCLUDES | OPT_INCNOEXEC);
}
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);
}
/* we ensure the invariant (d->opts_add & d->opts_remove) == 0 */
if (action == '-') {
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;
}
}
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->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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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;
}
static const char *satisfy(cmd_parms *cmd, void *c_, const char *arg)
{
core_dir_config *c = c_;
int satisfy = SATISFY_NOSPEC;
int i;
if (!strcasecmp(arg, "all")) {
satisfy = SATISFY_ALL;
}
else if (!strcasecmp(arg, "any")) {
satisfy = SATISFY_ANY;
}
else {
return "Satisfy either 'any' or 'all'.";
}
for (i = 0; i < METHODS; ++i) {
if (cmd->limited & (AP_METHOD_BIT << i)) {
c->satisfy[i] = satisfy;
}
}
return NULL;
}
static const char *require(cmd_parms *cmd, void *c_, const char *arg)
{
require_line *r;
core_dir_config *c = c_;
if (!c->ap_requires) {
c->ap_requires = apr_array_make(cmd->pool, 2, sizeof(require_line));
}
r = (require_line *)apr_array_push(c->ap_requires);
r->requirement = apr_pstrdup(cmd->pool, arg);
r->method_mask = cmd->limited;
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);
}
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;
const char *errmsg;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
limited_methods = apr_pstrndup(cmd->pool, arg, endp - arg);
while (limited_methods[0]) {
char *method = ap_getword_conf(cmd->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>";
}
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, method);
}
limited |= (AP_METHOD_BIT << methnum);
}
/* Killing two features with one function,
* if (tog == NULL) <Limit>, else <LimitExcept>
*/
cmd->limited = tog ? ~limited : limited;
errmsg = ap_walk_config(cmd->directive->first_child, cmd, cmd->context);
cmd->limited = -1;
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 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);
regex_t *r = NULL;
const command_rec *thiscmd = cmd->cmd;
const char *err = ap_check_cmd_context(cmd,
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->pool, arg, endp - arg);
if (!arg) {
if (thiscmd->cmd_data)
return "<DirectoryMatch > block must specify a path";
else
return "<Directory > block must specify a path";
}
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, REG_EXTENDED|USE_ICASE);
}
else if (thiscmd->cmd_data) { /* <DirectoryMatch> */
r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED|USE_ICASE);
}
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;
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|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->pool, arg, endp - arg);
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, REG_EXTENDED);
}
else if (!strcmp(cmd->path, "~")) {
cmd->path = ap_getword_conf(cmd->pool, &arg);
r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED);
}
/* 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;
regex_t *r = NULL;
const command_rec *thiscmd = cmd->cmd;
core_dir_config *c = mconfig;
ap_conf_vector_t *new_file_conf = ap_create_per_dir_config(cmd->pool);
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT|NOT_IN_LOCATION);
if (err != NULL) {
return err;
}
if (endp == NULL) {
return unclosed_directive(cmd);
}
arg = apr_pstrndup(cmd->pool, arg, endp - arg);
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, REG_EXTENDED|USE_ICASE);
}
else if (!strcmp(cmd->path, "~")) {
cmd->path = ap_getword_conf(cmd->pool, &arg);
r = ap_pregcomp(cmd->pool, cmd->path, REG_EXTENDED|USE_ICASE);
}
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(c, 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;
}
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->pool, arg, endp - arg);
if (not) {
arg++;
}
found = ap_find_linked_module(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->pool, arg, endp - arg);
if (arg[0] == '!') {
not = 1;
arg++;
}
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->pool, arg, endp - arg);
/* 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_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|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
*(const char **)(struct_ptr + offset) = arg;
return NULL;
}
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|NOT_IN_LIMIT);
const char *portstr;
int port;
if (err != NULL) {
return err;
}
portstr = ap_strchr_c(arg, ':');
if (portstr) {
cmd->server->server_hostname = apr_pstrndup(cmd->pool, arg,
portstr - arg);
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, arg);
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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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->pool, ap_server_root)) {
return "ServerRoot must be a valid directory";
}
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|NOT_IN_LIMIT);
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_, int arg)
{
core_dir_config *d = d_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
d->allow_encoded_slashes = arg != 0;
return NULL;
}
static const char *set_hostname_lookups(cmd_parms *cmd, void *d_,
const char *arg)
{
core_dir_config *d = d_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
cmd->server->path = arg;
cmd->server->pathlen = strlen(arg);
return NULL;
}
static const char *set_content_md5(cmd_parms *cmd, void *d_, int arg)
{
core_dir_config *d = d_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
d->content_md5 = arg != 0;
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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
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 *include_config (cmd_parms *cmd, void *dummy,
const char *name)
{
ap_directive_t *conftree = NULL;
const char* conffile = ap_server_root_relative(cmd->pool, name);
if (!conffile) {
return apr_pstrcat(cmd->pool, "Invalid Include path ",
name, NULL);
}
ap_process_resource_config(cmd->server, conffile,
&conftree, cmd->pool, cmd->temp_pool);
*(ap_directive_t **)dummy = conftree;
return NULL;
}
static const char *set_loglevel(cmd_parms *cmd, void *dummy, const char *arg)
{
char *str;
const char *err = ap_check_cmd_context(cmd,
NOT_IN_DIR_LOC_FILE|NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
if ((str = ap_getword_conf(cmd->pool, &arg))) {
if (!strcasecmp(str, "emerg")) {
cmd->server->loglevel = APLOG_EMERG;
}
else if (!strcasecmp(str, "alert")) {
cmd->server->loglevel = APLOG_ALERT;
}
else if (!strcasecmp(str, "crit")) {
cmd->server->loglevel = APLOG_CRIT;
}
else if (!strcasecmp(str, "error")) {
cmd->server->loglevel = APLOG_ERR;
}
else if (!strcasecmp(str, "warn")) {
cmd->server->loglevel = APLOG_WARNING;
}
else if (!strcasecmp(str, "notice")) {
cmd->server->loglevel = APLOG_NOTICE;
}
else if (!strcasecmp(str, "info")) {
cmd->server->loglevel = APLOG_INFO;
}
else if (!strcasecmp(str, "debug")) {
cmd->server->loglevel = APLOG_DEBUG;
}
else {
return "LogLevel requires level keyword: one of "
"emerg/alert/crit/error/warn/notice/info/debug";
}
}
else {
return "LogLevel requires level keyword";
}
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_module_config(r->per_dir_config,
&core_module);
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_version(),
" Server at <a href=\"mailto:",
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_version(),
" Server at ",
ap_escape_html(r->pool, ap_get_server_name(r)),
" Port ", sport,
"</address>\n", NULL);
}
/*
* Load an authorisation realm into our location configuration, applying the
* usual rules that apply to realms.
*/
static const char *set_authname(cmd_parms *cmd, void *mconfig,
const char *word1)
{
core_dir_config *aconfig = (core_dir_config *)mconfig;
aconfig->ap_auth_name = ap_escape_quotes(cmd->pool, word1);
return 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_version = NULL;
static int version_locked = 0;
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_version(void *dummy)
{
version_locked = 0;
ap_server_tokens = SrvTk_FULL;
server_version = 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_version(void)
{
return (server_version ? server_version : AP_SERVER_BASEVERSION);
}
AP_DECLARE(void) ap_add_version_component(apr_pool_t *pconf, const char *component)
{
if (! version_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_version == NULL) {
apr_pool_cleanup_register(pconf, NULL, reset_version,
apr_pool_cleanup_null);
server_version = apr_pstrdup(pconf, component);
}
else {
/*
* Tack the given component identifier to the end of
* the existing string.
*/
server_version = apr_pstrcat(pconf, server_version, " ",
component, NULL);
}
}
}
/*
* This routine adds the real server base identity to the version string,
* and then locks out changes until the next reconfig.
*/
static void ap_set_version(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_version string if we're not displaying
* the full set of tokens
*/
if (ap_server_tokens != SrvTk_FULL) {
version_locked++;
}
}
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 (!strcasecmp(arg, "OS")) {
ap_server_tokens = SrvTk_OS;
}
else if (!strcasecmp(arg, "Min") || !strcasecmp(arg, "Minimal")) {
ap_server_tokens = SrvTk_MINIMAL;
}
else if (!strcasecmp(arg, "Major")) {
ap_server_tokens = SrvTk_MAJOR;
}
else if (!strcasecmp(arg, "Minor") ) {
ap_server_tokens = SrvTk_MINOR;
}
else if (!strcasecmp(arg, "Prod") || !strcasecmp(arg, "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|NOT_IN_LIMIT);
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|NOT_IN_LIMIT);
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 (0 = no limit)",
NULL);
}
if (lim > DEFAULT_LIMIT_REQUEST_FIELDSIZE) {
return apr_psprintf(cmd->temp_pool, "LimitRequestFieldsize \"%s\" "
"must not exceed the precompiled maximum of %d",
arg, DEFAULT_LIMIT_REQUEST_FIELDSIZE);
}
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|NOT_IN_LIMIT);
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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
char *errp;
if (err != NULL) {
return err;
}
/* WTF: If strtoul is not portable, then write a replacement.
* Instead we have an idiotic define in httpd.h that prevents
* it from being used even when it is available. Sheesh.
*/
conf->limit_req_body = (apr_off_t)strtol(arg, &errp, 10);
if (*errp != '\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_;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
conf->limit_xml_body = atol(arg);
if (conf->limit_xml_body < 0)
return "LimitXMLRequestBody requires a non-negative integer.";
return NULL;
}
AP_DECLARE(size_t) ap_get_limit_xml_body(const request_rec *r)
{
core_dir_config *conf;
conf = ap_get_module_config(r->per_dir_config, &core_module);
if (conf->limit_xml_body == AP_LIMIT_UNSET)
return AP_DEFAULT_LIMIT_XML_BODY;
return (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,
"%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_;
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)
unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2 ,RLIMIT_AS);
#elif defined(RLIMIT_DATA)
unixd_set_rlimit(cmd, &conf->limit_mem, arg, arg2, RLIMIT_DATA);
#elif defined(RLIMIT_VMEM)
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_;
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_module_config(cmd->server->module_config,
&core_module);
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,
"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,
"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,
"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,
"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,
"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_module_config(r->server->module_config,
&core_module);
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,
"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,
"Request exceeded the limit of %d subrequest "
"nesting levels due to probable confguration "
"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 *add_ct_output_filters(cmd_parms *cmd, void *conf_,
const char *arg, const char *arg2)
{
core_dir_config *conf = conf_;
ap_filter_rec_t *old, *new = NULL;
const char *filter_name;
if (!conf->ct_output_filters) {
conf->ct_output_filters = apr_hash_make(cmd->pool);
old = NULL;
}
else {
old = (ap_filter_rec_t*) apr_hash_get(conf->ct_output_filters, arg2,
APR_HASH_KEY_STRING);
/* find last entry */
if (old) {
while (old->next) {
old = old->next;
}
}
}
while (*arg &&
(filter_name = ap_getword(cmd->pool, &arg, ';')) &&
strcmp(filter_name, "")) {
new = apr_pcalloc(cmd->pool, sizeof(ap_filter_rec_t));
new->name = filter_name;
/* We found something, so let's append it. */
if (old) {
old->next = new;
}
else {
apr_hash_set(conf->ct_output_filters, arg2,
APR_HASH_KEY_STRING, new);
}
old = new;
}
if (!new) {
return "invalid filter name";
}
return NULL;
}
/*
* Insert filters requested by the AddOutputFilterByType
* configuration directive. We cannot add filters based
* on content-type until after the handler has started
* to run. Only then do we reliably know the content-type.
*/
void ap_add_output_filters_by_type(request_rec *r)
{
core_dir_config *conf;
const char *ctype;
conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
/* We can't do anything with proxy requests, no content-types or if
* we don't have a filter configured.
*/
if (r->proxyreq != PROXYREQ_NONE || !r->content_type ||
!conf->ct_output_filters) {
return;
}
/* remove c-t decoration */
ctype = ap_field_noparam(r->pool, r->content_type);
if (ctype) {
ap_filter_rec_t *ct_filter;
ct_filter = apr_hash_get(conf->ct_output_filters, ctype,
APR_HASH_KEY_STRING);
while (ct_filter) {
ap_add_output_filter(ct_filter->name, NULL, r, r->connection);
ct_filter = ct_filter->next;
}
}
return;
}
static apr_status_t writev_it_all(apr_socket_t *s,
struct iovec *vec, int nvec,
apr_size_t len, apr_size_t *nbytes)
{
apr_size_t bytes_written = 0;
apr_status_t rv;
apr_size_t n = len;
int i = 0;
*nbytes = 0;
/* XXX handle checking for non-blocking socket */
while (bytes_written != len) {
rv = apr_socket_sendv(s, vec + i, nvec - i, &n);
*nbytes += n;
bytes_written += n;
if (rv != APR_SUCCESS)
return rv;
/* If the write did not complete, adjust the iovecs and issue
* apr_socket_sendv again
*/
if (bytes_written < len) {
/* Skip over the vectors that have already been written */
apr_size_t cnt = vec[i].iov_len;
while (n >= cnt && i + 1 < nvec) {
i++;
cnt += vec[i].iov_len;
}
if (n < cnt) {
/* Handle partial write of vec i */
vec[i].iov_base = (char *) vec[i].iov_base +
(vec[i].iov_len - (cnt - n));
vec[i].iov_len = cnt -n;
}
}
n = len - bytes_written;
}
return APR_SUCCESS;
}
/* sendfile_it_all()
* send the entire file using sendfile()
* handle partial writes
* return only when all bytes have been sent or an error is encountered.
*/
#if APR_HAS_SENDFILE
static apr_status_t sendfile_it_all(core_net_rec *c,
apr_file_t *fd,
apr_hdtr_t *hdtr,
apr_off_t file_offset,
apr_size_t file_bytes_left,
apr_size_t total_bytes_left,
apr_size_t *bytes_sent,
apr_int32_t flags)
{
apr_status_t rv;
#ifdef AP_DEBUG
apr_interval_time_t timeout = 0;
#endif
AP_DEBUG_ASSERT((apr_socket_timeout_get(c->client_socket, &timeout)
== APR_SUCCESS)
&& timeout > 0); /* socket must be in timeout mode */
/* Reset the bytes_sent field */
*bytes_sent = 0;
do {
apr_size_t tmplen = file_bytes_left;
rv = apr_socket_sendfile(c->client_socket, fd, hdtr, &file_offset, &tmplen,
flags);
*bytes_sent += tmplen;
total_bytes_left -= tmplen;
if (!total_bytes_left || rv != APR_SUCCESS) {
return rv; /* normal case & error exit */
}
AP_DEBUG_ASSERT(total_bytes_left > 0 && tmplen > 0);
/* partial write, oooh noooo...
* Skip over any header data which was written
*/
while (tmplen && hdtr->numheaders) {
if (tmplen >= hdtr->headers[0].iov_len) {
tmplen -= hdtr->headers[0].iov_len;
--hdtr->numheaders;
++hdtr->headers;
}
else {
char *iov_base = (char *)hdtr->headers[0].iov_base;
hdtr->headers[0].iov_len -= tmplen;
iov_base += tmplen;
hdtr->headers[0].iov_base = iov_base;
tmplen = 0;
}
}
/* Skip over any file data which was written */
if (tmplen <= file_bytes_left) {
file_offset += tmplen;
file_bytes_left -= tmplen;
continue;
}
tmplen -= file_bytes_left;
file_bytes_left = 0;
file_offset = 0;
/* Skip over any trailer data which was written */
while (tmplen && hdtr->numtrailers) {
if (tmplen >= hdtr->trailers[0].iov_len) {
tmplen -= hdtr->trailers[0].iov_len;
--hdtr->numtrailers;
++hdtr->trailers;
}
else {
char *iov_base = (char *)hdtr->trailers[0].iov_base;
hdtr->trailers[0].iov_len -= tmplen;
iov_base += tmplen;
hdtr->trailers[0].iov_base = iov_base;
tmplen = 0;
}
}
} while (1);
}
#endif
/*
* emulate_sendfile()
* Sends the contents of file fd along with header/trailer bytes, if any,
* to the network. emulate_sendfile will return only when all the bytes have been
* sent (i.e., it handles partial writes) or on a network error condition.
*/
static apr_status_t emulate_sendfile(core_net_rec *c, apr_file_t *fd,
apr_hdtr_t *hdtr, apr_off_t offset,
apr_size_t length, apr_size_t *nbytes)
{
apr_status_t rv = APR_SUCCESS;
apr_int32_t togo; /* Remaining number of bytes in the file to send */
apr_size_t sendlen = 0;
apr_size_t bytes_sent;
apr_int32_t i;
apr_off_t o; /* Track the file offset for partial writes */
char buffer[8192];
*nbytes = 0;
/* Send the headers
* writev_it_all handles partial writes.
* XXX: optimization... if headers are less than MIN_WRITE_SIZE, copy
* them into buffer
*/
if (hdtr && hdtr->numheaders > 0 ) {
for (i = 0; i < hdtr->numheaders; i++) {
sendlen += hdtr->headers[i].iov_len;
}
rv = writev_it_all(c->client_socket, hdtr->headers, hdtr->numheaders,
sendlen, &bytes_sent);
*nbytes += bytes_sent; /* track total bytes sent */
}
/* Seek the file to 'offset' */
if (offset != 0 && rv == APR_SUCCESS) {
rv = apr_file_seek(fd, APR_SET, &offset);
}
/* Send the file, making sure to handle partial writes */
togo = length;
while (rv == APR_SUCCESS && togo) {
sendlen = togo > sizeof(buffer) ? sizeof(buffer) : togo;
o = 0;
rv = apr_file_read(fd, buffer, &sendlen);
while (rv == APR_SUCCESS && sendlen) {
bytes_sent = sendlen;
rv = apr_socket_send(c->client_socket, &buffer[o], &bytes_sent);
*nbytes += bytes_sent;
if (rv == APR_SUCCESS) {
sendlen -= bytes_sent; /* sendlen != bytes_sent ==> partial write */
o += bytes_sent; /* o is where we are in the buffer */
togo -= bytes_sent; /* track how much of the file we've sent */
}
}
}
/* Send the trailers
* XXX: optimization... if it will fit, send this on the last send in the
* loop above
*/
sendlen = 0;
if ( rv == APR_SUCCESS && hdtr && hdtr->numtrailers > 0 ) {
for (i = 0; i < hdtr->numtrailers; i++) {
sendlen += hdtr->trailers[i].iov_len;
}
rv = writev_it_all(c->client_socket, hdtr->trailers, hdtr->numtrailers,
sendlen, &bytes_sent);
*nbytes += bytes_sent;
}
return rv;
}
/* 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_ALL,
"Container for authentication directives when accessed using specified HTTP "
"methods"),
AP_INIT_RAW_ARGS("<LimitExcept", ap_limit_section, (void*)1, OR_ALL,
"Container for authentication directives to be applied when any HTTP "
"method other than those specified is used to access the resource"),
AP_INIT_TAKE1("<IfModule", start_ifmod, NULL, EXEC_ON_READ | OR_ALL,
"Container for directives based on existance of specified modules"),
AP_INIT_TAKE1("<IfDefine", start_ifdefine, NULL, EXEC_ON_READ | OR_ALL,
"Container for directives based on existance of command line defines"),
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"),
AP_INIT_TAKE1("AuthType", ap_set_string_slot,
(void*)APR_OFFSETOF(core_dir_config, ap_auth_type), OR_AUTHCFG,
"An HTTP authorization type (e.g., \"Basic\")"),
AP_INIT_TAKE1("AuthName", set_authname, NULL, OR_AUTHCFG,
"The authentication realm (e.g. \"Members Only\")"),
AP_INIT_RAW_ARGS("Require", require, NULL, OR_AUTHCFG,
"Selects which authenticated users or groups may access a protected space"),
AP_INIT_TAKE1("Satisfy", satisfy, NULL, OR_AUTHCFG,
"access policy if both allow and require used ('all' or 'any')"),
#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"),
/* 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_RAW_ARGS("Options", set_options, NULL, OR_OPTIONS,
"Set a number of attributes for a given directory"),
AP_INIT_TAKE1("DefaultType", ap_set_string_slot,
(void*)APR_OFFSETOF(core_dir_config, ap_default_type),
OR_FILEINFO, "the default MIME type for untypable files"),
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"),
/* Old server config file commands */
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("ErrorLog", set_server_string_slot,
(void *)APR_OFFSETOF(server_rec, error_fname), RSRC_CONF,
"The filename of the error log"),
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"),
/* 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 of the config file to be included"),
AP_INIT_TAKE1("LogLevel", set_loglevel, NULL, RSRC_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), 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"),
/* 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
/* internal recursion stopper */
AP_INIT_TAKE12("LimitInternalRecursion", set_recursion_limit, NULL, RSRC_CONF,
"maximum recursion depth of internal redirects and subrequests"),
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", ap_set_string_slot_lower,
(void *)APR_OFFSETOF(core_dir_config, handler), 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_ITERATE2("AddOutputFilterByType", add_ct_output_filters,
(void *)APR_OFFSETOF(core_dir_config, ct_output_filters), OR_FILEINFO,
"output filter name followed by one or more content-types"),
AP_INIT_FLAG("AllowEncodedSlashes", set_allow2f, NULL, RSRC_CONF,
"Allow URLs containing '/' encoded as '%2F'"),
/*
* These are default configuration directives that mpms can/should
* pay attention to. If an mpm wishes to use these, they should
* #defined them in mpm.h.
*/
#ifdef AP_MPM_WANT_SET_PIDFILE
AP_INIT_TAKE1("PidFile", ap_mpm_set_pidfile, NULL, RSRC_CONF,
"A file for logging the server process ID"),
#endif
#ifdef AP_MPM_WANT_SET_SCOREBOARD
AP_INIT_TAKE1("ScoreBoardFile", ap_mpm_set_scoreboard, NULL, RSRC_CONF,
"A file for Apache to maintain runtime process management information"),
#endif
#ifdef AP_MPM_WANT_SET_LOCKFILE
AP_INIT_TAKE1("LockFile", ap_mpm_set_lockfile, NULL, RSRC_CONF,
"The lockfile used when Apache needs to lock the accept() call"),
#endif
#ifdef AP_MPM_WANT_SET_MAX_REQUESTS
AP_INIT_TAKE1("MaxRequestsPerChild", ap_mpm_set_max_requests, NULL, RSRC_CONF,
"Maximum number of requests a particular child serves before dying."),
#endif
#ifdef AP_MPM_WANT_SET_COREDUMPDIR
AP_INIT_TAKE1("CoreDumpDirectory", ap_mpm_set_coredumpdir, NULL, RSRC_CONF,
"The location of the directory Apache changes to before dumping core"),
#endif
#ifdef AP_MPM_WANT_SET_ACCEPT_LOCK_MECH
AP_INIT_TAKE1("AcceptMutex", ap_mpm_set_accept_lock_mech, NULL, RSRC_CONF,
ap_valid_accept_mutex_string),
#endif
#ifdef AP_MPM_WANT_SET_MAX_MEM_FREE
AP_INIT_TAKE1("MaxMemFree", ap_mpm_set_max_mem_free, NULL, RSRC_CONF,
"Maximum number of 1k blocks a particular childs allocator may hold."),
#endif
#ifdef AP_MPM_WANT_SET_STACKSIZE
AP_INIT_TAKE1("ThreadStackSize", ap_mpm_set_thread_stacksize, NULL, RSRC_CONF,
"Size in bytes of stack used by threads handling client connections"),
#endif
#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
{ NULL }
};
/*****************************************************************
*
* Core handlers for various phases of server operation...
*/
AP_DECLARE_NONSTD(int) ap_core_translate(request_rec *r)
{
void *sconf = r->server->module_config;
core_server_config *conf = ap_get_module_config(sconf, &core_module);
apr_status_t rv;
/* 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,
"Invalid URI in request %s", 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'))
{
/* skip all leading /'s (e.g. http://localhost///foo)
* so we are looking at only the relative path.
*/
char *path = r->uri + r->server->pathlen;
while (*path == '/') {
++path;
}
if ((rv = apr_filepath_merge(&r->filename, conf->ap_document_root, path,
APR_FILEPATH_TRUENAME
| APR_FILEPATH_SECUREROOT, r->pool))
!= APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
"Cannot map %s to file", r->the_request);
return HTTP_FORBIDDEN;
}
r->canonical_filename = r->filename;
}
else {
/*
* 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.
*/
char *path = r->uri;
while (*path == '/') {
++path;
}
if ((rv = apr_filepath_merge(&r->filename, conf->ap_document_root, path,
APR_FILEPATH_TRUENAME
| APR_FILEPATH_SECUREROOT, r->pool))
!= APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
"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_module_config(r->per_dir_config,
&core_module);
/* 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->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, 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 2 (which the module may
* interpret to its own customary behavior.) It won't be touched
* if the value is no longer undefined (2), 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 != 3)) {
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_module_config(r->per_dir_config,
&core_module);
bld_content_md5 = (d->content_md5 & 1)
&& 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 == 0) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"File does not exist: %s", r->filename);
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_ERR, 0, r,
"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_ERR, 0, r,
"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_module_config(r->request_config, &core_module);
if (!req_cfg->deliver_script) {
/* The flag hasn't been set for this request. Punt. */
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"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
| ((d->enable_sendfile == ENABLE_SENDFILE_OFF)
? 0 : APR_SENDFILE_ENABLED)
#endif
, 0, r->pool)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r,
"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(r);
apr_table_setn(r->headers_out, "Accept-Ranges", "bytes");
ap_set_content_length(r, r->finfo.size);
if ((errstatus = ap_meets_conditions(r)) != OK) {
apr_file_close(fd);
return errstatus;
}
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 APR_HAS_LARGE_FILES
#if APR_HAS_SENDFILE
if ((d->enable_sendfile != ENABLE_SENDFILE_OFF) &&
#else
if (
#endif
(r->finfo.size > AP_MAX_SENDFILE)) {
/* APR_HAS_LARGE_FILES issue; must split into mutiple buckets,
* no greater than MAX(apr_size_t), and more granular than that
* in case the brigade code/filters attempt to read it directly.
*/
apr_off_t fsize = r->finfo.size;
e = apr_bucket_file_create(fd, 0, AP_MAX_SENDFILE, r->pool,
c->bucket_alloc);
while (fsize > AP_MAX_SENDFILE) {
apr_bucket *ce;
apr_bucket_copy(e, &ce);
APR_BRIGADE_INSERT_TAIL(bb, ce);
e->start += AP_MAX_SENDFILE;
fsize -= AP_MAX_SENDFILE;
}
e->length = (apr_size_t)fsize; /* Resize just the last bucket */
}
else
#endif
e = apr_bucket_file_create(fd, 0, (apr_size_t)r->finfo.size,
r->pool, c->bucket_alloc);
#if APR_HAS_MMAP
if (d->enable_mmap == ENABLE_MMAP_OFF) {
(void)apr_bucket_file_enable_mmap(e, 0);
}
#endif
APR_BRIGADE_INSERT_TAIL(bb, e);
e = apr_bucket_eos_create(c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(bb, e);
return ap_pass_brigade(r->output_filters, bb);
}
else { /* unusual method (not GET or POST) */
if (r->method_number == M_INVALID) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"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;
}
}
typedef struct net_time_filter_ctx {
apr_socket_t *csd;
int first_line;
} net_time_filter_ctx_t;
static int net_time_filter(ap_filter_t *f, apr_bucket_brigade *b,
ap_input_mode_t mode, apr_read_type_e block,
apr_off_t readbytes)
{
net_time_filter_ctx_t *ctx = f->ctx;
int keptalive = f->c->keepalive == AP_CONN_KEEPALIVE;
if (!ctx) {
f->ctx = ctx = apr_palloc(f->r->pool, sizeof(*ctx));
ctx->first_line = 1;
ctx->csd = ap_get_module_config(f->c->conn_config, &core_module);
}
if (mode != AP_MODE_INIT && mode != AP_MODE_EATCRLF) {
if (ctx->first_line) {
apr_socket_timeout_set(ctx->csd,
keptalive
? f->c->base_server->keep_alive_timeout
: f->c->base_server->timeout);
ctx->first_line = 0;
}
else {
if (keptalive) {
apr_socket_timeout_set(ctx->csd, f->c->base_server->timeout);
}
}
}
return ap_get_brigade(f->next, b, mode, block, readbytes);
}
/**
* Remove all zero length buckets from the brigade.
*/
#define BRIGADE_NORMALIZE(b) \
do { \
apr_bucket *e = APR_BRIGADE_FIRST(b); \
do { \
if (e->length == 0 && !APR_BUCKET_IS_METADATA(e)) { \
apr_bucket *d; \
d = APR_BUCKET_NEXT(e); \
apr_bucket_delete(e); \
e = d; \
} \
e = APR_BUCKET_NEXT(e); \
} while (!APR_BRIGADE_EMPTY(b) && (e != APR_BRIGADE_SENTINEL(b))); \
} while (0)
static int core_input_filter(ap_filter_t *f, apr_bucket_brigade *b,
ap_input_mode_t mode, apr_read_type_e block,
apr_off_t readbytes)
{
apr_bucket *e;
apr_status_t rv;
core_net_rec *net = f->ctx;
core_ctx_t *ctx = net->in_ctx;
const char *str;
apr_size_t len;
if (mode == AP_MODE_INIT) {
/*
* this mode is for filters that might need to 'initialize'
* a connection before reading request data from a client.
* NNTP over SSL for example needs to handshake before the
* server sends the welcome message.
* such filters would have changed the mode before this point
* is reached. however, protocol modules such as NNTP should
* not need to know anything about SSL. given the example, if
* SSL is not in the filter chain, AP_MODE_INIT is a noop.
*/
return APR_SUCCESS;
}
if (!ctx)
{
ctx = apr_pcalloc(f->c->pool, sizeof(*ctx));
ctx->b = apr_brigade_create(f->c->pool, f->c->bucket_alloc);
/* seed the brigade with the client socket. */
e = apr_bucket_socket_create(net->client_socket, f->c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(ctx->b, e);
net->in_ctx = ctx;
}
else if (APR_BRIGADE_EMPTY(ctx->b)) {
return APR_EOF;
}
/* ### This is bad. */
BRIGADE_NORMALIZE(ctx->b);
/* check for empty brigade again *AFTER* BRIGADE_NORMALIZE()
* If we have lost our socket bucket (see above), we are EOF.
*
* Ideally, this should be returning SUCCESS with EOS bucket, but
* some higher-up APIs (spec. read_request_line via ap_rgetline)
* want an error code. */
if (APR_BRIGADE_EMPTY(ctx->b)) {
return APR_EOF;
}
if (mode == AP_MODE_GETLINE) {
/* we are reading a single LF line, e.g. the HTTP headers */
rv = apr_brigade_split_line(b, ctx->b, block, HUGE_STRING_LEN);
/* We should treat EAGAIN here the same as we do for EOF (brigade is
* empty). We do this by returning whatever we have read. This may
* or may not be bogus, but is consistent (for now) with EOF logic.
*/
if (APR_STATUS_IS_EAGAIN(rv)) {
rv = APR_SUCCESS;
}
return rv;
}
/* ### AP_MODE_PEEK is a horrific name for this mode because we also
* eat any CRLFs that we see. That's not the obvious intention of
* this mode. Determine whether anyone actually uses this or not. */
if (mode == AP_MODE_EATCRLF) {
apr_bucket *e;
const char *c;
/* The purpose of this loop is to ignore any CRLF (or LF) at the end
* of a request. Many browsers send extra lines at the end of POST
* requests. We use the PEEK method to determine if there is more
* data on the socket, so that we know if we should delay sending the
* end of one request until we have served the second request in a
* pipelined situation. We don't want to actually delay sending a
* response if the server finds a CRLF (or LF), becuause that doesn't
* mean that there is another request, just a blank line.
*/
while (1) {
if (APR_BRIGADE_EMPTY(ctx->b))
return APR_EOF;
e = APR_BRIGADE_FIRST(ctx->b);
rv = apr_bucket_read(e, &str, &len, APR_NONBLOCK_READ);
if (rv != APR_SUCCESS)
return rv;
c = str;
while (c < str + len) {
if (*c == APR_ASCII_LF)
c++;
else if (*c == APR_ASCII_CR && *(c + 1) == APR_ASCII_LF)
c += 2;
else
return APR_SUCCESS;
}
/* If we reach here, we were a bucket just full of CRLFs, so
* just toss the bucket. */
/* FIXME: Is this the right thing to do in the core? */
apr_bucket_delete(e);
}
return APR_SUCCESS;
}
/* If mode is EXHAUSTIVE, we want to just read everything until the end
* of the brigade, which in this case means the end of the socket.
* To do this, we attach the brigade that has currently been setaside to
* the brigade that was passed down, and send that brigade back.
*
* NOTE: This is VERY dangerous to use, and should only be done with
* extreme caution. However, the Perchild MPM needs this feature
* if it is ever going to work correctly again. With this, the Perchild
* MPM can easily request the socket and all data that has been read,
* which means that it can pass it to the correct child process.
*/
if (mode == AP_MODE_EXHAUSTIVE) {
apr_bucket *e;
/* Tack on any buckets that were set aside. */
APR_BRIGADE_CONCAT(b, ctx->b);
/* Since we've just added all potential buckets (which will most
* likely simply be the socket bucket) we know this is the end,
* so tack on an EOS too. */
/* We have read until the brigade was empty, so we know that we
* must be EOS. */
e = apr_bucket_eos_create(f->c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(b, e);
return APR_SUCCESS;
}
/* read up to the amount they specified. */
if (mode == AP_MODE_READBYTES || mode == AP_MODE_SPECULATIVE) {
apr_bucket *e;
apr_bucket_brigade *newbb;
AP_DEBUG_ASSERT(readbytes > 0);
e = APR_BRIGADE_FIRST(ctx->b);
rv = apr_bucket_read(e, &str, &len, block);
if (APR_STATUS_IS_EAGAIN(rv)) {
return APR_SUCCESS;
}
else if (rv != APR_SUCCESS) {
return rv;
}
else if (block == APR_BLOCK_READ && len == 0) {
/* We wanted to read some bytes in blocking mode. We read
* 0 bytes. Hence, we now assume we are EOS.
*
* When we are in normal mode, return an EOS bucket to the
* caller.
* When we are in speculative mode, leave ctx->b empty, so
* that the next call returns an EOS bucket.
*/
apr_bucket_delete(e);
if (mode == AP_MODE_READBYTES) {
e = apr_bucket_eos_create(f->c->bucket_alloc);
APR_BRIGADE_INSERT_TAIL(b, e);
}
return APR_SUCCESS;
}
/* We can only return at most what we read. */
if (len < readbytes) {
readbytes = len;
}
rv = apr_brigade_partition(ctx->b, readbytes, &e);
if (rv != APR_SUCCESS) {
return rv;
}
/* Must do split before CONCAT */
newbb = apr_brigade_split(ctx->b, e);
if (mode == AP_MODE_READBYTES) {
APR_BRIGADE_CONCAT(b, ctx->b);
}
else if (mode == AP_MODE_SPECULATIVE) {
apr_bucket *copy_bucket;
for (e = APR_BRIGADE_FIRST(ctx->b);
e != APR_BRIGADE_SENTINEL(ctx->b);
e = APR_BUCKET_NEXT(e))
{
rv = apr_bucket_copy(e, &copy_bucket);
if (rv != APR_SUCCESS) {
return rv;
}
APR_BRIGADE_INSERT_TAIL(b, copy_bucket);
}
}
/* Take what was originally there and place it back on ctx->b */
APR_BRIGADE_CONCAT(ctx->b, newbb);
}
return APR_SUCCESS;
}
#define MAX_IOVEC_TO_WRITE 16
/* Optional function coming from mod_logio, used for logging of output
* traffic
*/
static APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_out) *logio_add_bytes_out;
static apr_status_t core_output_filter(ap_filter_t *f, apr_bucket_brigade *b)
{
apr_status_t rv;
apr_bucket_brigade *more;
conn_rec *c = f->c;
core_net_rec *net = f->ctx;
core_output_filter_ctx_t *ctx = net->out_ctx;
apr_read_type_e eblock = APR_NONBLOCK_READ;
apr_pool_t *input_pool = b->p;
if (ctx == NULL) {
ctx = apr_pcalloc(c->pool, sizeof(*ctx));
net->out_ctx = ctx;
}
/* If we have a saved brigade, concatenate the new brigade to it */
if (ctx->b) {
APR_BRIGADE_CONCAT(ctx->b, b);
b = ctx->b;
ctx->b = NULL;
}
/* Perform multiple passes over the brigade, sending batches of output
to the connection. */
while (b && !APR_BRIGADE_EMPTY(b)) {
apr_size_t nbytes = 0;
apr_bucket *last_e = NULL; /* initialized for debugging */
apr_bucket *e;
/* one group of iovecs per pass over the brigade */
apr_size_t nvec = 0;
apr_size_t nvec_trailers = 0;
struct iovec vec[MAX_IOVEC_TO_WRITE];
struct iovec vec_trailers[MAX_IOVEC_TO_WRITE];
/* one file per pass over the brigade */
apr_file_t *fd = NULL;
apr_size_t flen = 0;
apr_off_t foffset = 0;
/* keep track of buckets that we've concatenated
* to avoid small writes
*/
apr_bucket *last_merged_bucket = NULL;
/* tail of brigade if we need another pass */
more = NULL;
/* Iterate over the brigade: collect iovecs and/or a file */
for (e = APR_BRIGADE_FIRST(b);
e != APR_BRIGADE_SENTINEL(b);
e = APR_BUCKET_NEXT(e))
{
/* keep track of the last bucket processed */
last_e = e;
if (APR_BUCKET_IS_EOS(e)) {
break;
}
if (AP_BUCKET_IS_EOC(e)) {
apr_bucket_delete(e);
}
else if (APR_BUCKET_IS_FLUSH(e)) {
if (e != APR_BRIGADE_LAST(b)) {
more = apr_brigade_split(b, APR_BUCKET_NEXT(e));
}
break;
}
/* It doesn't make any sense to use sendfile for a file bucket
* that represents 10 bytes.
*/
else if (APR_BUCKET_IS_FILE(e)
&& (e->length >= AP_MIN_SENDFILE_BYTES)) {
apr_bucket_file *a = e->data;
/* We can't handle more than one file bucket at a time
* so we split here and send the file we have already
* found.
*/
if (fd) {
more = apr_brigade_split(b, e);
break;
}
fd = a->fd;
flen = e->length;
foffset = e->start;
}
else {
const char *str;
apr_size_t n;
rv = apr_bucket_read(e, &str, &n, eblock);
if (APR_STATUS_IS_EAGAIN(rv)) {
/* send what we have so far since we shouldn't expect more
* output for a while... next time we read, block
*/
more = apr_brigade_split(b, e);
eblock = APR_BLOCK_READ;
break;
}
eblock = APR_NONBLOCK_READ;
if (n) {
if (!fd) {
if (nvec == MAX_IOVEC_TO_WRITE) {
/* woah! too many. buffer them up, for use later. */
apr_bucket *temp, *next;
apr_bucket_brigade *temp_brig;
if (nbytes >= AP_MIN_BYTES_TO_WRITE) {
/* We have enough data in the iovec
* to justify doing a writev
*/
more = apr_brigade_split(b, e);
break;
}
/* Create a temporary brigade as a means
* of concatenating a bunch of buckets together
*/
if (last_merged_bucket) {
/* If we've concatenated together small
* buckets already in a previous pass,
* the initial buckets in this brigade
* are heap buckets that may have extra
* space left in them (because they
* were created by apr_brigade_write()).
* We can take advantage of this by
* building the new temp brigade out of
* these buckets, so that the content
* in them doesn't have to be copied again.
*/
apr_bucket_brigade *bb;
bb = apr_brigade_split(b,
APR_BUCKET_NEXT(last_merged_bucket));
temp_brig = b;
b = bb;
}
else {
temp_brig = apr_brigade_create(f->c->pool,
f->c->bucket_alloc);
}
temp = APR_BRIGADE_FIRST(b);
while (temp != e) {
apr_bucket *d;
rv = apr_bucket_read(temp, &str, &n, APR_BLOCK_READ);
apr_brigade_write(temp_brig, NULL, NULL, str, n);
d = temp;
temp = APR_BUCKET_NEXT(temp);
apr_bucket_delete(d);
}
nvec = 0;
nbytes = 0;
temp = APR_BRIGADE_FIRST(temp_brig);
APR_BUCKET_REMOVE(temp);
APR_BRIGADE_INSERT_HEAD(b, temp);
apr_bucket_read(temp, &str, &n, APR_BLOCK_READ);
vec[nvec].iov_base = (char*) str;
vec[nvec].iov_len = n;
nvec++;
/* Just in case the temporary brigade has
* multiple buckets, recover the rest of
* them and put them in the brigade that
* we're sending.
*/
for (next = APR_BRIGADE_FIRST(temp_brig);
next != APR_BRIGADE_SENTINEL(temp_brig);
next = APR_BRIGADE_FIRST(temp_brig)) {
APR_BUCKET_REMOVE(next);
APR_BUCKET_INSERT_AFTER(temp, next);
temp = next;
apr_bucket_read(next, &str, &n,
APR_BLOCK_READ);
vec[nvec].iov_base = (char*) str;
vec[nvec].iov_len = n;
nvec++;
}
apr_brigade_destroy(temp_brig);
last_merged_bucket = temp;
e = temp;
last_e = e;
}
else {
vec[nvec].iov_base = (char*) str;
vec[nvec].iov_len = n;
nvec++;
}
}
else {
/* The bucket is a trailer to a file bucket */
if (nvec_trailers == MAX_IOVEC_TO_WRITE) {
/* woah! too many. stop now. */
more = apr_brigade_split(b, e);
break;
}
vec_trailers[nvec_trailers].iov_base = (char*) str;
vec_trailers[nvec_trailers].iov_len = n;
nvec_trailers++;
}
nbytes += n;
}
}
}
/* Completed iterating over the brigade, now determine if we want
* to buffer the brigade or send the brigade out on the network.
*
* Save if we haven't accumulated enough bytes to send, and:
*
* 1) we didn't see a file, we don't have more passes over the
* brigade to perform, AND we didn't stop at a FLUSH bucket.
* (IOW, we will save plain old bytes such as HTTP headers)
* or
* 2) we hit the EOS and have a keep-alive connection
* (IOW, this response is a bit more complex, but we save it
* with the hope of concatenating with another response)
*/
if (nbytes + flen < AP_MIN_BYTES_TO_WRITE
&& ((!fd && !more && !APR_BUCKET_IS_FLUSH(last_e))
|| (APR_BUCKET_IS_EOS(last_e)
&& c->keepalive == AP_CONN_KEEPALIVE))) {
/* NEVER save an EOS in here. If we are saving a brigade with
* an EOS bucket, then we are doing keepalive connections, and
* we want to process to second request fully.
*/
if (APR_BUCKET_IS_EOS(last_e)) {
apr_bucket *bucket;
int file_bucket_saved = 0;
apr_bucket_delete(last_e);
for (bucket = APR_BRIGADE_FIRST(b);
bucket != APR_BRIGADE_SENTINEL(b);
bucket = APR_BUCKET_NEXT(bucket)) {
/* Do a read on each bucket to pull in the
* data from pipe and socket buckets, so
* that we don't leave their file descriptors
* open indefinitely. Do the same for file
* buckets, with one exception: allow the
* first file bucket in the brigade to remain
* a file bucket, so that we don't end up
* doing an mmap+memcpy every time a client
* requests a <8KB file over a keepalive
* connection.
*/
if (APR_BUCKET_IS_FILE(bucket) && !file_bucket_saved) {
file_bucket_saved = 1;
}
else {
const char *buf;
apr_size_t len = 0;
rv = apr_bucket_read(bucket, &buf, &len,
APR_BLOCK_READ);
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_ERR, rv,
c->base_server, "core_output_filter:"
" Error reading from bucket.");
return HTTP_INTERNAL_SERVER_ERROR;
}
}
}
}
if (!ctx->deferred_write_pool) {
apr_pool_create(&ctx->deferred_write_pool, c->pool);
}
ap_save_brigade(f, &ctx->b, &b, ctx->deferred_write_pool);
return APR_SUCCESS;
}
if (fd) {
apr_hdtr_t hdtr;
apr_size_t bytes_sent;
#if APR_HAS_SENDFILE
apr_int32_t flags = 0;
#endif
memset(&hdtr, '\0', sizeof(hdtr));
if (nvec) {
hdtr.numheaders = nvec;
hdtr.headers = vec;
}
if (nvec_trailers) {
hdtr.numtrailers = nvec_trailers;
hdtr.trailers = vec_trailers;
}
#if APR_HAS_SENDFILE
if (apr_file_flags_get(fd) & APR_SENDFILE_ENABLED) {
if (c->keepalive == AP_CONN_CLOSE && APR_BUCKET_IS_EOS(last_e)) {
/* Prepare the socket to be reused */
flags |= APR_SENDFILE_DISCONNECT_SOCKET;
}
rv = sendfile_it_all(net, /* the network information */
fd, /* the file to send */
&hdtr, /* header and trailer iovecs */
foffset, /* offset in the file to begin
sending from */
flen, /* length of file */
nbytes + flen, /* total length including
headers */
&bytes_sent, /* how many bytes were
sent */
flags); /* apr_sendfile flags */
}
else
#endif
{
rv = emulate_sendfile(net, fd, &hdtr, foffset, flen,
&bytes_sent);
}
if (logio_add_bytes_out && bytes_sent > 0)
logio_add_bytes_out(c, bytes_sent);
fd = NULL;
}
else {
apr_size_t bytes_sent;
rv = writev_it_all(net->client_socket,
vec, nvec,
nbytes, &bytes_sent);
if (logio_add_bytes_out && bytes_sent > 0)
logio_add_bytes_out(c, bytes_sent);
}
apr_brigade_destroy(b);
/* drive cleanups for resources which were set aside
* this may occur before or after termination of the request which
* created the resource
*/
if (ctx->deferred_write_pool) {
if (more && more->p == ctx->deferred_write_pool) {
/* "more" belongs to the deferred_write_pool,
* which is about to be cleared.
*/
if (APR_BRIGADE_EMPTY(more)) {
more = NULL;
}
else {
/* uh oh... change more's lifetime
* to the input brigade's lifetime
*/
apr_bucket_brigade *tmp_more = more;
more = NULL;
ap_save_brigade(f, &more, &tmp_more, input_pool);
}
}
apr_pool_clear(ctx->deferred_write_pool);
}
if (rv != APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_INFO, rv, c->base_server,
"core_output_filter: writing data to the network");
if (more)
apr_brigade_destroy(more);
/* No need to check for SUCCESS, we did that above. */
if (!APR_STATUS_IS_EAGAIN(rv)) {
c->aborted = 1;
}
/* The client has aborted, but the request was successful. We
* will report success, and leave it to the access and error
* logs to note that the connection was aborted.
*/
return APR_SUCCESS;
}
b = more;
more = NULL;
} /* end while () */
return APR_SUCCESS;
}
static int core_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
logio_add_bytes_out = APR_RETRIEVE_OPTIONAL_FN(ap_logio_add_bytes_out);
ident_lookup = APR_RETRIEVE_OPTIONAL_FN(ap_ident_lookup);
ap_set_version(pconf);
ap_setup_make_content_type(pconf);
return OK;
}
static void core_insert_filter(request_rec *r)
{
core_dir_config *conf = (core_dir_config *)
ap_get_module_config(r->per_dir_config,
&core_module);
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_module_config(r->request_config, &core_module);
if (!req_cfg) {
return NULL;
}
return &(req_cfg->notes[note_num]);
}
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_module_config(r->main->request_config, &core_module);
req_cfg->bb = main_req_cfg->bb;
}
else {
req_cfg->bb = apr_brigade_create(r->pool, r->connection->bucket_alloc);
if (!r->prev) {
ap_add_input_filter_handle(ap_net_time_filter_handle,
NULL, r, r->connection);
}
}
ap_set_module_config(r->request_config, &core_module, req_cfg);
/* Begin by presuming any module can make its own path_info assumptions,
* until some module interjects and changes the value.
*/
r->used_path_info = AP_REQ_DEFAULT_PATH_INFO;
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;
(void)ap_update_child_status(c->sbh, SERVER_BUSY_READ, (request_rec *)NULL);
/* Got a connection structure, so initialize what fields we can
* (the rest are zeroed out by pcalloc).
*/
c->conn_config = ap_create_conn_config(ptrans);
c->notes = apr_table_make(ptrans, 5);
c->pool = ptrans;
if ((rv = apr_socket_addr_get(&c->local_addr, APR_LOCAL, csd))
!= APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_INFO, rv, server,
"apr_socket_addr_get(APR_LOCAL)");
apr_socket_close(csd);
return NULL;
}
apr_sockaddr_ip_get(&c->local_ip, c->local_addr);
if ((rv = apr_socket_addr_get(&c->remote_addr, APR_REMOTE, csd))
!= APR_SUCCESS) {
ap_log_error(APLOG_MARK, APLOG_INFO, rv, server,
"apr_socket_addr_get(APR_REMOTE)");
apr_socket_close(csd);
return NULL;
}
apr_sockaddr_ip_get(&c->remote_ip, c->remote_addr);
c->base_server = server;
c->id = id;
c->bucket_alloc = alloc;
return c;
}
static int core_pre_connection(conn_rec *c, void *csd)
{
core_net_rec *net = apr_palloc(c->pool, sizeof(*net));
#ifdef AP_MPM_DISABLE_NAGLE_ACCEPTED_SOCK
/* BillS says perhaps this should be moved to the MPMs. Some OSes
* allow listening socket attributes to be inherited by the
* accept sockets which means this call only needs to be made
* once on the listener
*/
ap_sock_disable_nagle(csd);
#endif
net->c = c;
net->in_ctx = NULL;
net->out_ctx = NULL;
net->client_socket = csd;
ap_set_module_config(net->c->conn_config, &core_module, 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;
}
static void register_hooks(apr_pool_t *p)
{
/* create_connection and install_transport_filters are
* hooks that should always be APR_HOOK_REALLY_LAST 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_post_config(core_post_config,NULL,NULL,APR_HOOK_REALLY_FIRST);
ap_hook_translate_name(ap_core_translate,NULL,NULL,APR_HOOK_REALLY_LAST);
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_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_access_checker(do_nothing,NULL,NULL,APR_HOOK_REALLY_LAST);
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);
/* 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", core_input_filter,
NULL, AP_FTYPE_NETWORK);
ap_net_time_filter_handle =
ap_register_input_filter("NET_TIME", net_time_filter,
NULL, AP_FTYPE_PROTOCOL);
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", 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_DATA module core_module = {
STANDARD20_MODULE_STUFF,
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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