http_core.c revision 7afdaa3ee342af2e075f62c619b60628556f7205
219N/A/* ====================================================================
219N/A * The Apache Software License, Version 1.1
219N/A *
219N/A * Copyright (c) 2000 The Apache Software Foundation. All rights
219N/A * reserved.
219N/A *
219N/A * Redistribution and use in source and binary forms, with or without
219N/A * modification, are permitted provided that the following conditions
219N/A * are met:
219N/A *
219N/A * 1. Redistributions of source code must retain the above copyright
219N/A * notice, this list of conditions and the following disclaimer.
219N/A *
219N/A * 2. Redistributions in binary form must reproduce the above copyright
219N/A * notice, this list of conditions and the following disclaimer in
219N/A * the documentation and/or other materials provided with the
219N/A * distribution.
219N/A *
219N/A * 3. The end-user documentation included with the redistribution,
219N/A * if any, must include the following acknowledgment:
219N/A * "This product includes software developed by the
219N/A * Apache Software Foundation (http://www.apache.org/)."
219N/A * Alternately, this acknowledgment may appear in the software itself,
219N/A * if and wherever such third-party acknowledgments normally appear.
219N/A *
219N/A * 4. The names "Apache" and "Apache Software Foundation" must
219N/A * not be used to endorse or promote products derived from this
219N/A * software without prior written permission. For written
219N/A * permission, please contact apache@apache.org.
219N/A *
219N/A * 5. Products derived from this software may not be called "Apache",
219N/A * nor may "Apache" appear in their name, without prior written
219N/A * permission of the Apache Software Foundation.
219N/A *
219N/A * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
219N/A * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
219N/A * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* Portions of this software are based upon public domain software
* originally written at the National Center for Supercomputing Applications,
* University of Illinois, Urbana-Champaign.
*/
#define CORE_PRIVATE
#include "ap_config.h"
#include "apr_strings.h"
#include "apr_lib.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 "rfc1413.h"
#include "util_md5.h"
#include "apr_fnmatch.h"
#include "http_connection.h"
#include "ap_buckets.h"
#include "util_filter.h"
#include "util_ebcdic.h"
#include "mpm.h"
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
/* Make sure we don't write less than 4096 bytes at any one time.
*/
#define MIN_SIZE_TO_WRITE 9000
/* Allow Apache to use ap_mmap */
#ifdef AP_USE_MMAP_FILES
#include "apr_mmap.h"
/* mmap support for static files based on ideas from John Heidemann's
* patch against 1.0.5. See
* <http://www.isi.edu/~johnh/SOFTWARE/APACHE/index.html>.
*/
/* Files have to be at least this big before they're mmap()d. This is to deal
* with systems where the expense of doing an mmap() and an munmap() outweighs
* the benefit for small files. It shouldn't be set lower than 1.
*/
#ifndef MMAP_THRESHOLD
# ifdef SUNOS4
# define MMAP_THRESHOLD (8*1024)
# else
# define MMAP_THRESHOLD 1
# endif /* SUNOS4 */
#endif /* MMAP_THRESHOLD */
#ifndef MMAP_LIMIT
#define MMAP_LIMIT (4*1024*1024)
#endif
#endif /* AP_USE_MMAP_FILES */
/* LimitXMLRequestBody handling */
#define AP_LIMIT_UNSET ((long) -1)
#define AP_DEFAULT_LIMIT_XML_BODY ((size_t)1000000)
/* 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.
*/
static void *create_core_dir_config(apr_pool_t *a, char *dir)
{
core_dir_config *conf;
conf = (core_dir_config *)apr_pcalloc(a, sizeof(core_dir_config));
if (!dir || dir[strlen(dir) - 1] == '/') {
conf->d = dir;
}
else if (strncmp(dir, "proxy:", 6) == 0) {
conf->d = apr_pstrdup(a, dir);
}
else {
conf->d = apr_pstrcat(a, dir, "/", NULL);
}
conf->d_is_fnmatch = conf->d ? (apr_is_fnmatch(conf->d) != 0) : 0;
conf->d_components = conf->d ? ap_count_dirs(conf->d) : 0;
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->use_canonical_name = USE_CANONICAL_NAME_UNSET;
conf->hostname_lookups = HOSTNAME_LOOKUP_UNSET;
conf->do_rfc1413 = DEFAULT_RFC1413 | 2; /* set bit 1 to indicate default */
conf->satisfy = 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 = apr_make_array(a, 2, sizeof(void *));
#ifdef WIN32
conf->script_interpreter_source = INTERPRETER_SOURCE_UNSET;
#endif
conf->server_signature = srv_sig_unset;
conf->add_default_charset = ADD_DEFAULT_CHARSET_UNSET;
conf->add_default_charset_name = DEFAULT_ADD_DEFAULT_CHARSET_NAME;
conf->output_filters = apr_make_array(a, 2, sizeof(void *));
conf->input_filters = apr_make_array(a, 2, sizeof(void *));
return (void *)conf;
}
static void *merge_core_dir_configs(apr_pool_t *a, void *basev, void *newv)
{
core_dir_config *base = (core_dir_config *)basev;
core_dir_config *new = (core_dir_config *)newv;
core_dir_config *conf;
int i;
conf = (core_dir_config *)apr_palloc(a, sizeof(core_dir_config));
memcpy((char *)conf, (const char *)base, sizeof(core_dir_config));
if (base->response_code_strings) {
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);
}
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 (new->response_code_strings) {
if (conf->response_code_strings == NULL) {
conf->response_code_strings = apr_palloc(a,
sizeof(*conf->response_code_strings) * RESPONSE_CODES);
memcpy(conf->response_code_strings, new->response_code_strings,
sizeof(*conf->response_code_strings) * RESPONSE_CODES);
}
else {
for (i = 0; i < RESPONSE_CODES; ++i) {
if (new->response_code_strings[i] != NULL) {
conf->response_code_strings[i]
= new->response_code_strings[i];
}
}
}
}
if (new->hostname_lookups != HOSTNAME_LOOKUP_UNSET) {
conf->hostname_lookups = new->hostname_lookups;
}
if ((new->do_rfc1413 & 2) == 0) {
conf->do_rfc1413 = new->do_rfc1413;
}
if ((new->content_md5 & 2) == 0) {
conf->content_md5 = new->content_md5;
}
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;
conf->sec = apr_append_arrays(a, base->sec, new->sec);
if (new->satisfy != SATISFY_NOSPEC) {
conf->satisfy = new->satisfy;
}
#ifdef WIN32
if (new->script_interpreter_source != INTERPRETER_SOURCE_UNSET) {
conf->script_interpreter_source = new->script_interpreter_source;
}
#endif
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;
if (new->add_default_charset_name) {
conf->add_default_charset_name = new->add_default_charset_name;
}
}
conf->output_filters = apr_append_arrays(a, base->output_filters,
new->output_filters);
conf->input_filters = apr_append_arrays(a, base->input_filters,
new->input_filters);
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 = apr_make_array(a, 40, sizeof(void *));
conf->sec_url = apr_make_array(a, 40, sizeof(void *));
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_pcalloc(p, sizeof(core_server_config));
*conf = *virt;
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 = apr_append_arrays(p, base->sec, virt->sec);
conf->sec_url = apr_append_arrays(p, base->sec_url, virt->sec_url);
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_push_array(sconf->sec);
*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_push_array(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_push_array(conf->sec);
*new_space = url_config;
}
/* core_reorder_directories reorders the directory sections such that the
* 1-component sections come first, then the 2-component, and so on, finally
* followed by the "special" sections. A section is "special" if it's a regex,
* or if it doesn't start with / -- consider proxy: matching. All movements
* are in-order to preserve the ordering of the sections from the config files.
* See directory_walk().
*/
#if defined(HAVE_DRIVE_LETTERS)
#define IS_SPECIAL(entry_core) \
((entry_core)->r != NULL \
|| ((entry_core)->d[0] != '/' && (entry_core)->d[1] != ':'))
#elif defined(NETWARE)
/* XXX: Fairly certain this is correct... '/' must prefix the path
* or else in the case xyz:/ or abc/xyz:/, '/' must follow the ':'.
* If there is no leading '/' or embedded ':/', then we are special.
*/
#define IS_SPECIAL(entry_core) \
((entry_core)->r != NULL \
|| ((entry_core)->d[0] != '/' \
&& strchr((entry_core)->d, ':') \
&& *(strchr((entry_core)->d, ':') + 1) != '/'))
#else
#define IS_SPECIAL(entry_core) \
((entry_core)->r != NULL || (entry_core)->d[0] != '/')
#endif
/* 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 a "special" section has infinite components).
*/
struct reorder_sort_rec {
void *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 = (core_dir_config *)ap_get_module_config(a->elt, &core_module);
core_b = (core_dir_config *)ap_get_module_config(b->elt, &core_module);
if (IS_SPECIAL(core_a)) {
if (!IS_SPECIAL(core_b)) {
return 1;
}
}
else if (IS_SPECIAL(core_b)) {
return -1;
}
else {
/* we know they're both not special */
if (core_a->d_components < core_b->d_components) {
return -1;
}
else if (core_a->d_components > core_b->d_components) {
return 1;
}
}
/* Either they're both special, or they're both not special and have the
* same number of components. In any event, we now have to compare
* the minor key. */
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;
struct reorder_sort_rec *sortbin;
int nelts;
void **elts;
int i;
apr_pool_t *tmp;
sconf = ap_get_module_config(s->module_config, &core_module);
sec = sconf->sec;
nelts = sec->nelts;
elts = (void **)sec->elts;
/* we have to allocate tmp space to do a stable sort */
apr_create_pool(&tmp, p);
sortbin = apr_palloc(tmp, sec->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_destroy_pool(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;
}
/* 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)
{
struct hostent *hptr;
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;
}
hptr = gethostbyname(conn->remote_host);
if (hptr) {
char **haddr;
for (haddr = hptr->h_addr_list; *haddr; haddr++) {
if (((struct in_addr *)(*haddr))->s_addr
== conn->remote_addr.sin_addr.s_addr) {
conn->double_reverse = 1;
return;
}
}
}
conn->double_reverse = -1;
}
AP_DECLARE(const char *) ap_get_remote_host(conn_rec *conn, void *dir_config,
int type)
{
int hostname_lookups;
/* 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_get_remote_hostname(&conn->remote_host, conn->client_socket)
== 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 {
return conn->remote_ip;
}
}
}
AP_DECLARE(const char *) ap_get_remote_logname(request_rec *r)
{
core_dir_config *dir_conf;
if (r->connection->remote_logname != NULL) {
return r->connection->remote_logname;
}
/* If we haven't checked the identity, and we want to */
dir_conf = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
if (dir_conf->do_rfc1413 & 1) {
return ap_rfc1413(r->connection, r->server);
}
else {
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 connectiona 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) {
struct in_addr *iaddr;
struct hostent *hptr;
iaddr = &(conn->local_addr.sin_addr);
hptr = gethostbyaddr((char *)iaddr, sizeof(struct in_addr),
AF_INET);
if (hptr != NULL) {
conn->local_host = apr_pstrdup(conn->pool,
(void *)hptr->h_name);
ap_str_tolower(conn->local_host);
}
else {
conn->local_host = apr_pstrdup(conn->pool,
r->server->server_hostname);
}
}
return conn->local_host;
}
/* default */
return r->server->server_hostname;
}
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);
port = r->server->port ? r->server->port : ap_default_port(r);
if (d->use_canonical_name == USE_CANONICAL_NAME_OFF
|| d->use_canonical_name == USE_CANONICAL_NAME_DNS) {
if (r->hostname)
apr_get_port(&port, APR_LOCAL, r->connection->client_socket);
}
/* 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 = ap_get_server_name(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(unsigned long) 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;
}
#ifdef WIN32
static apr_status_t get_win32_registry_default_value(apr_pool_t *p, HKEY hkey,
char* relativepath,
char **value)
{
HKEY hkeyOpen;
DWORD type;
DWORD size = 0;
DWORD result = RegOpenKeyEx(hkey, relativepath, 0,
KEY_QUERY_VALUE, &hkeyOpen);
if (result != ERROR_SUCCESS)
return APR_FROM_OS_ERROR(result);
/* Read to NULL buffer to determine value size */
result = RegQueryValueEx(hkeyOpen, "", 0, &type, NULL, &size);
if (result == ERROR_SUCCESS) {
if ((size < 2) || (type != REG_SZ && type != REG_EXPAND_SZ)) {
result = ERROR_INVALID_PARAMETER;
}
else {
*value = apr_palloc(p, size);
/* Read value based on size query above */
result = RegQueryValueEx(hkeyOpen, "", 0, &type, *value, &size);
}
}
/* TODO: This might look fine, but we need to provide some warning
* somewhere that some environment variables may -not- be translated,
* seeing as we may have chopped the environment table down somewhat.
*/
if ((result == ERROR_SUCCESS) && (type == REG_EXPAND_SZ))
{
char *tmp = *value;
size = ExpandEnvironmentStrings(tmp, *value, 0);
if (size) {
*value = apr_palloc(p, size);
size = ExpandEnvironmentStrings(tmp, *value, size);
}
}
RegCloseKey(hkeyOpen);
return APR_FROM_OS_ERROR(result);
}
static char* get_interpreter_from_win32_registry(apr_pool_t *p, const char* ext,
char** arguments, int strict)
{
char execcgi_path[] = "SHELL\\EXECCGI\\COMMAND";
char execopen_path[] = "SHELL\\OPEN\\COMMAND";
char typeName[MAX_PATH];
int cmdOfName = FALSE;
HKEY hkeyName;
HKEY hkeyType;
DWORD type;
int size;
int result;
char *buffer;
char *s;
if (!ext)
return NULL;
/*
* Future optimization:
* When the registry is successfully searched, store the strings for
* interpreter and arguments in an ext hash to speed up subsequent look-ups
*/
/* Open the key associated with the script filetype extension */
result = RegOpenKeyEx(HKEY_CLASSES_ROOT, ext, 0, KEY_QUERY_VALUE,
&hkeyType);
if (result != ERROR_SUCCESS)
return NULL;
/* Retrieve the name of the script filetype extension */
size = sizeof(typeName);
result = RegQueryValueEx(hkeyType, "", NULL, &type, typeName, &size);
if (result == ERROR_SUCCESS && type == REG_SZ && typeName[0]) {
/* Open the key associated with the script filetype extension */
result = RegOpenKeyEx(HKEY_CLASSES_ROOT, typeName, 0,
KEY_QUERY_VALUE, &hkeyName);
if (result == ERROR_SUCCESS)
cmdOfName = TRUE;
}
/* Open the key for the script command path by:
*
* 1) the 'named' filetype key for ExecCGI/Command
* 2) the extension's type key for ExecCGI/Command
*
* and if the strict arg is false, then continue trying:
*
* 3) the 'named' filetype key for Open/Command
* 4) the extension's type key for Open/Command
*/
if (cmdOfName) {
result = get_win32_registry_default_value(p, hkeyName,
execcgi_path, &buffer);
}
if (!cmdOfName || (result != ERROR_SUCCESS)) {
result = get_win32_registry_default_value(p, hkeyType,
execcgi_path, &buffer);
}
if (!strict && cmdOfName && (result != ERROR_SUCCESS)) {
result = get_win32_registry_default_value(p, hkeyName,
execopen_path, &buffer);
}
if (!strict && (result != ERROR_SUCCESS)) {
result = get_win32_registry_default_value(p, hkeyType,
execopen_path, &buffer);
}
if (cmdOfName)
RegCloseKey(hkeyName);
RegCloseKey(hkeyType);
if (result != ERROR_SUCCESS)
return NULL;
/*
* The canonical way shell command entries are entered in the Win32
* registry is as follows:
* shell [options] "%1" [args]
* where
* shell - full path name to interpreter or shell to run.
* E.g., c:\usr\local\ntreskit\perl\bin\perl.exe
* options - optional switches
* E.g., \C
* "%1" - Place holder for file to run the shell against.
* Typically quoted.
* options - additional arguments
* E.g., /silent
*
* If we find a %1 or a quoted %1, lop off the remainder to arguments.
*/
if (buffer && *buffer) {
if ((s = strstr(buffer, "\"%1")))
{
*s = '\0';
*arguments = s + 4;
}
else if ((s = strstr(buffer, "%1")))
{
*s = '\0';
*arguments = buffer + 2;
}
else
*arguments = strchr(buffer, '\0');
while (**arguments && isspace(**arguments))
++*arguments;
}
return buffer;
}
AP_DECLARE (file_type_e) ap_get_win32_interpreter(const request_rec *r,
char** interpreter,
char** arguments)
{
HANDLE hFile;
DWORD nBytesRead;
BOOLEAN bResult;
char buffer[1024];
core_dir_config *d;
int i;
file_type_e fileType = eFileTypeUNKNOWN;
char *ext = NULL;
char *exename = NULL;
d = (core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
/* Find the file extension */
exename = strrchr(r->filename, '/');
if (!exename) {
exename = strrchr(r->filename, '\\');
}
if (!exename) {
exename = r->filename;
}
else {
exename++;
}
ext = strrchr(exename, '.');
if (ext && (!strcasecmp(ext,".bat") || !strcasecmp(ext,".cmd")))
{
char *comspec = getenv("COMSPEC");
if (comspec) {
*interpreter = apr_pstrcat(r->pool, "\"", comspec, "\" /c ", NULL);
return eFileTypeSCRIPT;
}
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r->server,
"Failed to start a '%s' file as a script." APR_EOL_STR
"\tCOMSPEC variable is missing from the environment.", ext);
return eFileTypeUNKNOWN;
}
/* If the file has an extension and it is not .com and not .exe and
* we've been instructed to search the registry, then do it!
*/
if (ext && strcasecmp(ext,".exe") && strcasecmp(ext,".com") &&
(d->script_interpreter_source == INTERPRETER_SOURCE_REGISTRY ||
d->script_interpreter_source == INTERPRETER_SOURCE_REGISTRY_STRICT)) {
/* Check the registry */
int strict = (d->script_interpreter_source
== INTERPRETER_SOURCE_REGISTRY_STRICT);
*interpreter = get_interpreter_from_win32_registry(r->pool, ext,
arguments, strict);
if (*interpreter)
return eFileTypeSCRIPT;
else if (d->script_interpreter_source == INTERPRETER_SOURCE_REGISTRY_STRICT) {
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r->server,
"ScriptInterpreterSource config directive set to \"registry-strict\"." APR_EOL_STR
"\tInterpreter not found for files of type '%s'.", ext);
return eFileTypeUNKNOWN;
}
else
{
ap_log_error(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r->server,
"ScriptInterpreterSource config directive set to \"registry\"." APR_EOL_STR
"\tInterpreter not found for files of type '%s', "
"trying \"script\" method...", ext);
}
}
/* Need to peek into the file figure out what it really is... */
hFile = CreateFile(r->filename, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE) {
return eFileTypeUNKNOWN;
}
bResult = ReadFile(hFile, (void*) &buffer, sizeof(buffer) - 1,
&nBytesRead, NULL);
if (!bResult || (nBytesRead == 0)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, GetLastError(), r,
"ReadFile(%s) failed", r->filename);
CloseHandle(hFile);
return eFileTypeUNKNOWN;
}
CloseHandle(hFile);
buffer[nBytesRead] = '\0';
/* Script or executable, that is the question... */
if ((buffer[0] == '#') && (buffer[1] == '!')) {
/* Assuming file is a script since it starts with a shebang */
fileType = eFileTypeSCRIPT;
for (i = 2; i < sizeof(buffer); i++) {
if ((buffer[i] == '\r')
|| (buffer[i] == '\n')) {
break;
}
}
buffer[i] = '\0';
for (i = 2; buffer[i] == ' ' ; ++i)
;
*interpreter = apr_pstrdup(r->pool, buffer + i );
}
else {
/* Not a script, is it an executable? */
IMAGE_DOS_HEADER *hdr = (IMAGE_DOS_HEADER*)buffer;
if ((nBytesRead >= sizeof(IMAGE_DOS_HEADER)) && (hdr->e_magic == IMAGE_DOS_SIGNATURE)) {
if (hdr->e_lfarlc < 0x40)
fileType = eFileTypeEXE16;
else
fileType = eFileTypeEXE32;
}
else
fileType = eFileTypeUNKNOWN;
}
return fileType;
}
#endif
/*****************************************************************
*
* 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
&& cmd->path != NULL) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, gt,
" cannot occur within <Directory/Location/Files> "
"section", 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, 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;
}
arg = ap_os_canonical_filename(cmd->pool, arg);
if (/* TODO: ap_configtestonly && ap_docrootcheck && */ !ap_is_directory(arg)) {
if (cmd->server->is_virtual) {
ap_log_error(APLOG_MARK, APLOG_STARTUP | APLOG_NOERRNO, 0, NULL,
"Warning: DocumentRoot [%s] does not exist",
arg);
}
else {
return "DocumentRoot must be a directory";
}
}
conf->ap_document_root = arg;
return NULL;
}
AP_DECLARE(void) ap_custom_response(request_rec *r, int status, 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_NOERRNO|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;
}
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;
}
static const char *satisfy(cmd_parms *cmd, void *c_, const char *arg)
{
core_dir_config *c=c_;
if (!strcasecmp(arg, "all")) {
c->satisfy = SATISFY_ALL;
}
else if (!strcasecmp(arg, "any")) {
c->satisfy = SATISFY_ANY;
}
else {
return "Satisfy either 'any' or 'all'.";
}
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_make_array(cmd->pool, 2, sizeof(require_line));
}
r = (require_line *)apr_push_array(c->ap_requires);
r->requirement = apr_pstrdup(cmd->pool, arg);
r->method_mask = cmd->limited;
return NULL;
}
AP_CORE_DECLARE_NONSTD(const char *) ap_limit_section(cmd_parms *cmd, void *dummy,
const char *arg) {
const char *limited_methods = ap_getword(cmd->pool, &arg, '>');
void *tog = cmd->cmd->cmd_data;
int limited = 0;
const char *errmsg;
const char *err = ap_check_cmd_context(cmd, NOT_IN_LIMIT);
if (err != NULL) {
return err;
}
while (limited_methods[0]) {
char *method = ap_getword_conf(cmd->pool, &limited_methods);
int methnum = ap_method_number_of(method);
if (methnum == M_TRACE && !tog) {
return "TRACE cannot be controlled by <Limit>";
}
else if (methnum == M_INVALID) {
char **xmethod;
register int i, j, k;
/*
* Deal with <Limit> by adding the method to the list.
*/
if (!tog) {
if (cmd->limited_xmethods == NULL) {
cmd->limited_xmethods = apr_make_array(cmd->pool, 2,
sizeof(char *));
}
xmethod = (char **) apr_push_array(cmd->limited_xmethods);
*xmethod = apr_pstrdup(cmd->pool, method);
}
/*
* <LimitExcept>, so remove any/all occurrences of the method
* in the extension array.
*/
else if ((cmd->limited_xmethods != NULL)
&& (cmd->limited_xmethods->nelts != 0)) {
xmethod = (char **) cmd->limited_xmethods->elts;
for (i = 0; i < cmd->limited_xmethods->nelts; ) {
if (strcmp(xmethod[i], method) == 0) {
for (j = i, k = i + 1;
k < cmd->limited_xmethods->nelts;
++j, ++k) {
xmethod[j] = xmethod[k];
}
cmd->limited_xmethods->nelts--;
}
}
}
}
limited |= (1 << 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;
}
/* 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
/*
* Report a missing-'>' syntax error.
*/
static char *unclosed_directive(cmd_parms *cmd)
{
return apr_pstrcat(cmd->pool, cmd->cmd->name,
"> directive missing closing '>'", NULL);
}
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;
void *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);
cmd->path = ap_getword_conf(cmd->pool, &arg);
cmd->override = OR_ALL|ACCESS_CONF;
if (thiscmd->cmd_data) { /* <DirectoryMatch> */
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);
}
#if defined(HAVE_DRIVE_LETTERS) || defined(NETWARE)
else if (strcmp(cmd->path, "/") == 0) {
/* Treat 'default' path / as an inalienable root */
cmd->path = apr_pstrdup(cmd->pool, cmd->path);
}
#endif
#if defined(HAVE_UNC_PATHS)
else if (strcmp(cmd->path, "//") == 0) {
/* Treat UNC path // as an inalienable root */
cmd->path = apr_pstrdup(cmd->pool, cmd->path);
}
#endif
else {
/* Ensure that the pathname is canonical */
cmd->path = ap_os_canonical_filename(cmd->pool, cmd->path);
}
/* initialize our config and fetch it */
conf = (core_dir_config *)ap_set_config_vectors(cmd, new_dir_conf,
&core_module);
errmsg = ap_walk_config(cmd->directive->first_child, cmd, new_dir_conf);
if (errmsg != NULL)
return errmsg;
conf->r = r;
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;
void *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 = (core_dir_config *)ap_set_config_vectors(cmd, new_url_conf,
&core_module);
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_is_fnmatch(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;
void *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 {
/* Ensure that the pathname is canonical */
cmd->path = ap_os_canonical_filename(cmd->pool, cmd->path);
}
/* initialize our config and fetch it */
conf = (core_dir_config *)ap_set_config_vectors(cmd, new_file_conf,
&core_module);
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_is_fnmatch(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_push_array(cmd->server->wild_names);
}
else {
item = (char **)apr_push_array(cmd->server->names);
}
*item = name;
}
return NULL;
}
static const char *add_filter(cmd_parms *cmd, void *dummy, const char *arg)
{
core_dir_config *conf = dummy;
char **newfilter;
newfilter = (char **)apr_push_array(conf->output_filters);
*newfilter = apr_pstrdup(cmd->pool, arg);
return NULL;
}
static const char *add_input_filter(cmd_parms *cmd, void *dummy, const char *arg)
{
core_dir_config *conf = dummy;
char **newfilter;
newfilter = (char **)apr_push_array(conf->input_filters);
*newfilter = apr_pstrdup(cmd->pool, arg);
return NULL;
}
static const char *add_module_command(cmd_parms *cmd, void *dummy,
const char *arg)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
if (!ap_add_named_module(arg)) {
return apr_pstrcat(cmd->pool, "Cannot add module via name '", arg,
"': not in list of loaded modules", NULL);
}
*(ap_directive_t **)dummy = NULL;
return NULL;
}
static const char *clear_module_list_command(cmd_parms *cmd, void *dummy)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
ap_clear_module_list();
*(ap_directive_t **)dummy = NULL;
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_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);
int port;
if (err != NULL) {
return err;
}
port = atoi(arg);
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);
}
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;
}
arg = ap_os_canonical_filename(cmd->pool, arg);
if (!ap_is_directory(arg)) {
return "ServerRoot must be a valid directory";
}
ap_server_root = arg;
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 = atoi(arg);
return NULL;
}
static const char *set_keep_alive_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->keep_alive_timeout = atoi(arg);
return NULL;
}
static const char *set_keep_alive(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;
}
/* We've changed it to On/Off, but used to use numbers
* so we accept anything but "Off" or "0" as "On"
*/
if (!strcasecmp(arg, "off") || !strcmp(arg, "0")) {
cmd->server->keep_alive = 0;
}
else {
cmd->server->keep_alive = 1;
}
return NULL;
}
static const char *set_keep_alive_max(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->keep_alive_max = atoi(arg);
return NULL;
}
static const char *set_idcheck(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->do_rfc1413 = 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_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;
ap_process_resource_config(cmd->server,
ap_server_root_relative(cmd->pool, name),
&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_SERVER_BASEVERSION
" Server at <A HREF=\"mailto:",
r->server->server_admin, "\">",
ap_get_server_name(r), "</A> Port ", sport,
"</ADDRESS>\n", NULL);
}
return apr_pstrcat(r->pool, prefix, "<ADDRESS>" AP_SERVER_BASEVERSION
" Server at ", 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;
}
#ifdef _OSD_POSIX /* BS2000 Logon Passwd file */
static const char *set_bs2000_account(cmd_parms *cmd, void *dummy, char *name)
{
const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
if (err != NULL) {
return err;
}
return os_set_account(cmd->pool, name);
}
#endif /*_OSD_POSIX*/
/*
* 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_MIN, /* eg: Apache/1.3.0 */
SrvTk_OS, /* eg: Apache/1.3.0 (UNIX) */
SrvTk_FULL, /* eg: Apache/1.3.0 (UNIX) PHP/3.0 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(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_register_cleanup(pconf, NULL, reset_version,
apr_null_cleanup);
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_MIN) {
ap_add_version_component(pconf, AP_SERVER_BASEVERSION);
}
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_MIN;
}
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);
}
if (lim > DEFAULT_LIMIT_REQUEST_LINE) {
return apr_psprintf(cmd->temp_pool, "LimitRequestLine \"%s\" "
"must not exceed the precompiled maximum of %d",
arg, DEFAULT_LIMIT_REQUEST_LINE);
}
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);
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 = (unsigned long)strtol(arg, (char **)NULL, 10);
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;
}
#ifdef WIN32
static const char *set_interpreter_source(cmd_parms *cmd, core_dir_config *d,
char *arg)
{
if (!strcasecmp(arg, "registry")) {
d->script_interpreter_source = INTERPRETER_SOURCE_REGISTRY;
} else if (!strcasecmp(arg, "registry-strict")) {
d->script_interpreter_source = INTERPRETER_SOURCE_REGISTRY_STRICT;
} else if (!strcasecmp(arg, "script")) {
d->script_interpreter_source = INTERPRETER_SOURCE_SHEBANG;
} else {
return apr_pstrcat(cmd->temp_pool, "ScriptInterpreterSource \"", arg,
"\" must be \"registry\", \"registry-strict\" or "
"\"script\"", NULL);
}
return NULL;
}
#endif
#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_NOERRNO|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 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;
apr_size_t i = 0;
*nbytes = 0;
/* XXX handle checking for non-blocking socket */
while (bytes_written != len) {
rv = apr_sendv(s, vec + i, nvec - i, &n);
bytes_written += n;
if (rv != APR_SUCCESS)
return rv;
*nbytes += n;
/* If the write did not complete, adjust the iovecs and issue
* apr_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;
}
/*
* send_the_file()
* Sends the contents of file fd along with header/trailer bytes, if any,
* to the network. send_the_file 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 send_the_file(conn_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);
if (rv == APR_SUCCESS)
*nbytes += bytes_sent; /* track total bytes sent */
}
/* Seek the file to 'offset' */
if (offset != 0 && rv == APR_SUCCESS) {
rv = apr_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_read(fd, buffer, &sendlen);
while (rv == APR_SUCCESS && sendlen) {
bytes_sent = sendlen;
rv = apr_send(c->client_socket, &buffer[o], &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 */
*nbytes += bytes_sent;
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);
if (rv == APR_SUCCESS)
*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*)XtOffsetOf(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"),
/* 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*)XtOffsetOf (core_dir_config, ap_default_type),
OR_FILEINFO, "the default MIME type for untypable files"),
/* Old server config file commands */
AP_INIT_TAKE1("Port", server_port, NULL, RSRC_CONF, "A TCP port number"),
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 *)XtOffsetOf (server_rec, server_admin), RSRC_CONF,
"The email address of the server administrator"),
AP_INIT_TAKE1("ServerName", set_server_string_slot,
(void *)XtOffsetOf (server_rec, server_hostname), RSRC_CONF,
"The hostname 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,
"Common directory of server-related files (logs, confs, etc.)"),
AP_INIT_TAKE1("ErrorLog", set_server_string_slot,
(void *)XtOffsetOf (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_TAKE1("KeepAliveTimeout", set_keep_alive_timeout, NULL, RSRC_CONF,
"Keep-Alive timeout duration (sec)"),
AP_INIT_TAKE1("MaxKeepAliveRequests", set_keep_alive_max, NULL, RSRC_CONF,
"Maximum number of Keep-Alive requests per connection, or 0 for infinite"),
AP_INIT_TAKE1("KeepAlive", set_keep_alive, NULL, RSRC_CONF,
"Whether persistent connections should be On or Off"),
AP_INIT_FLAG("IdentityCheck", set_idcheck, NULL, RSRC_CONF|ACCESS_CONF,
"Enable identd (RFC 1413) user lookups - SLOW"),
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 */
AP_INIT_ITERATE("AddModule", add_module_command, NULL,
RSRC_CONF, "The name of a module"),
AP_INIT_NO_ARGS("ClearModuleList", clear_module_list_command, NULL,
RSRC_CONF, NULL),
/* 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"),
#ifdef _OSD_POSIX
AP_INIT_TAKE1("BS2000Account", set_bs2000_account, NULL, RSRC_CONF,
"Name of server User's bs2000 logon account name"),
#endif
#ifdef WIN32
AP_INIT_TAKE1("ScriptInterpreterSource", set_interpreter_source, NULL,
OR_FILEINFO,
"Where to find interpreter to run Win32 scripts (Registry or script shebang line)"),
#endif
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*)XtOffsetOf(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*)XtOffsetOf(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*)XtOffsetOf(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*)XtOffsetOf(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
/* XXX These should be allowable in .htaccess files, but currently it won't
* play well with the Options stuff. Until that is fixed, I would prefer
* to leave it just in the conf file. Other should feel free to disagree
* with me. Rbb.
*/
AP_INIT_ITERATE("AddOutputFilter", add_filter, NULL, ACCESS_CONF,
"filters to be run"),
AP_INIT_ITERATE("AddInputFilter", add_input_filter, NULL, ACCESS_CONF,
"filters to be run on the request body"),
{ 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);
if (r->proxyreq) {
return HTTP_FORBIDDEN;
}
if ((r->uri[0] != '/') && strcmp(r->uri, "*")) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|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')) {
r->filename = apr_pstrcat(r->pool, conf->ap_document_root,
(r->uri + r->server->pathlen), NULL);
}
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 /
*/
if ((conf->ap_document_root[strlen(conf->ap_document_root)-1] == '/')
&& (*(r->uri) == '/')) {
r->filename = apr_pstrcat(r->pool, conf->ap_document_root, r->uri+1,
NULL);
}
else {
r->filename = apr_pstrcat(r->pool, conf->ap_document_root, r->uri,
NULL);
}
}
return OK;
}
static int do_nothing(request_rec *r) { return OK; }
static int default_handler(request_rec *r)
{
core_dir_config *d =
(core_dir_config *)ap_get_module_config(r->per_dir_config, &core_module);
int errstatus;
apr_file_t *fd = NULL;
apr_status_t status;
#ifdef AP_USE_MMAP_FILES
apr_mmap_t *mm = NULL;
#endif
/* 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->content_md5 & 1) && r->output_filters->frec->ftype != AP_FTYPE_CONTENT;
ap_allow_methods(r, MERGE_ALLOW, "GET", "OPTIONS", "POST", NULL);
if ((errstatus = ap_discard_request_body(r)) != OK) {
return errstatus;
}
if (r->method_number == M_INVALID) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|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);
}
if (r->method_number == M_PUT) {
return HTTP_METHOD_NOT_ALLOWED;
}
if (r->finfo.protection == 0 || (r->path_info && *r->path_info)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, r,
"File does not exist: %s",r->path_info ?
apr_pstrcat(r->pool, r->filename, r->path_info, NULL)
: r->filename);
return HTTP_NOT_FOUND;
}
if (r->method_number != M_GET && r->method_number != M_POST) {
return HTTP_METHOD_NOT_ALLOWED;
}
if ((status = apr_open(&fd, r->filename, APR_READ | APR_BINARY, 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_close(fd);
return errstatus;
}
#ifdef AP_USE_MMAP_FILES
if ((r->finfo.size >= MMAP_THRESHOLD)
&& (r->finfo.size < MMAP_LIMIT)
&& (!r->header_only || bld_content_md5)) {
/* we need to protect ourselves in case we die while we've got the
* file mmapped */
apr_status_t status;
if ((status = apr_mmap_create(&mm, fd, 0, r->finfo.size, r->connection->pool)) != APR_SUCCESS) {
ap_log_rerror(APLOG_MARK, APLOG_CRIT, status, r,
"default_handler: mmap failed: %s", r->filename);
mm = NULL;
}
}
else {
mm = NULL;
}
if (mm == NULL) {
#endif
if (bld_content_md5) {
apr_table_setn(r->headers_out, "Content-MD5",
ap_md5digest(r->pool, fd));
}
ap_send_http_header(r);
if (!r->header_only) {
apr_size_t length = r->finfo.size;
apr_off_t offset = 0;
apr_size_t nbytes = 0;
ap_send_fd(fd, r, offset, length, &nbytes);
}
#ifdef AP_USE_MMAP_FILES
}
else {
unsigned char *addr;
apr_mmap_offset((void**)&addr, mm ,0);
if (bld_content_md5) {
apr_md5_ctx_t context;
apr_MD5Init(&context);
apr_MD5Update(&context, addr, (unsigned int)r->finfo.size);
apr_table_setn(r->headers_out, "Content-MD5",
ap_md5contextTo64(r->pool, &context));
}
ap_send_http_header(r);
if (!r->header_only) {
ap_send_mmap(mm, r, 0, r->finfo.size);
}
}
#endif
apr_close(fd);
return OK;
}
/*
* coalesce_filter()
* This is a simple filter to coalesce many small buckets into one large
* bucket.
*
* Note:
* This implementation of coalesce_filter will only coalesce a single
* contiguous string of coalesable buckets. It will not coalesce multiple
* non-contiguous buckets. For example, if a brigade contains 10 small
* buckets followed by a large bucket (or a pipe or file bucket) followed
* by more small buckets, only the first 10 buckets will be coalesced.
*/
typedef struct COALESCE_FILTER_CTX {
char *buf; /* Start of buffer */
char *cur; /* Pointer to next location to write */
apr_size_t cnt; /* Number of bytes put in buf */
apr_size_t avail; /* Number of bytes available in the buf */
} coalesce_filter_ctx_t;
#define FILTER_BUFF_SIZE 8192
#define MIN_BUCKET_SIZE 200
static apr_status_t coalesce_filter(ap_filter_t *f, ap_bucket_brigade *b)
{
apr_status_t rv;
apr_pool_t *p = f->r->pool;
ap_bucket *e, *insert_before = NULL, *destroy_me = NULL;
coalesce_filter_ctx_t *ctx = f->ctx;
int pass_the_brigade = 0, insert_first = 0;
if (ctx == NULL) {
f->ctx = ctx = apr_pcalloc(p, sizeof(coalesce_filter_ctx_t));
ctx->avail = FILTER_BUFF_SIZE;
}
if (ctx->cnt) {
insert_first = 1;
}
/* Iterate across the buckets, coalescing the small buckets into a
* single buffer
*/
AP_BRIGADE_FOREACH(e, b) {
if (destroy_me) {
ap_bucket_destroy(destroy_me);
destroy_me = NULL;
}
if (AP_BUCKET_IS_EOS(e) || AP_BUCKET_IS_FILE(e) ||
AP_BUCKET_IS_PIPE(e) || AP_BUCKET_IS_FLUSH(e)) {
pass_the_brigade = 1;
}
else {
const char *str;
apr_size_t n;
rv = ap_bucket_read(e, &str, &n, AP_BLOCK_READ);
if (rv != APR_SUCCESS) {
/* XXX: log error */
return rv;
}
if ((n < MIN_BUCKET_SIZE) && (n < ctx->avail)) {
/* Coalesce this bucket into the buffer */
if (ctx->buf == NULL) {
ctx->buf = apr_palloc(p, FILTER_BUFF_SIZE);
ctx->cur = ctx->buf;
ctx->cnt = 0;
}
memcpy(ctx->cur, str, n);
ctx->cnt += n;
ctx->cur += n;
ctx->avail -= n;
/* If this is the first bucket to be coalesced, don't remove it
* from the brigade. Save it as a marker for where to insert
* ctx->buf into the brigade when we're done.
*/
if (insert_before || insert_first){
AP_BUCKET_REMOVE(e);
destroy_me = e;
}
else {
insert_before = e;
}
}
else if (insert_before || insert_first) {
/* This bucket was not able to be coalesced because it either
* exceeds MIN_BUCKET_SIZE or its contents will not fit into
* buf. We're done...
*/
pass_the_brigade = 1;
break;
}
else {
/* If there is even a single bucket that cannot be coalesced,
* then we must pass the brigade down to the next filter.
*/
pass_the_brigade = 1;
}
}
}
if (destroy_me) {
ap_bucket_destroy(destroy_me);
destroy_me = NULL;
}
if (pass_the_brigade) {
/* Insert ctx->buf into the correct spotin the brigade */
if (insert_first) {
e = ap_bucket_create_pool(ctx->buf, ctx->cnt, p);
AP_BRIGADE_INSERT_HEAD(b, e);
}
else if (insert_before) {
e = ap_bucket_create_pool(ctx->buf, ctx->cnt, p);
AP_BUCKET_INSERT_BEFORE(e, insert_before);
AP_BUCKET_REMOVE(insert_before);
ap_bucket_destroy(insert_before);
insert_before = NULL;
}
rv = ap_pass_brigade(f->next, b);
if (rv != APR_SUCCESS) {
/* XXX: Log the error */
return rv;
}
/* Get ctx->buf ready for the next brigade */
if (ctx) {
ctx->cur = ctx->buf;
ctx->cnt = 0;
ctx->avail = FILTER_BUFF_SIZE;
}
}
else {
if (insert_before) {
AP_BUCKET_REMOVE(insert_before);
ap_bucket_destroy(insert_before);
}
/* The brigade should be empty now because all the buckets
* were coalesced into the coalesce_filter buf
*/
}
return APR_SUCCESS;
}
/*
* HTTP/1.1 chunked transfer encoding filter.
*/
static apr_status_t chunk_filter(ap_filter_t *f, ap_bucket_brigade *b)
{
#define ASCII_CRLF "\015\012"
#define ASCII_ZERO "\060"
ap_bucket_brigade *more = NULL;
ap_bucket *e;
apr_status_t rv;
for (more = NULL; b; b = more, more = NULL) {
apr_off_t bytes = 0;
ap_bucket *eos = NULL;
char chunk_hdr[20]; /* enough space for the snprintf below */
AP_BRIGADE_FOREACH(e, b) {
if (AP_BUCKET_IS_EOS(e)) {
/* there shouldn't be anything after the eos */
eos = e;
break;
}
else if (e->length == -1) {
/* unknown amount of data (e.g. a pipe) */
const char *data;
apr_size_t len;
rv = ap_bucket_read(e, &data, &len, AP_BLOCK_READ);
if (rv != APR_SUCCESS) {
return rv;
}
if (len > 0) {
/*
* There may be a new next bucket representing the
* rest of the data stream on which a read() may
* block so we pass down what we have so far.
*/
bytes += len;
more = ap_brigade_split(b, AP_BUCKET_NEXT(e));
break;
}
else {
/* If there was nothing in this bucket then we can
* safely move on to the next one without pausing
* to pass down what we have counted up so far.
*/
continue;
}
}
else {
bytes += e->length;
}
}
/*
* XXX: if there aren't very many bytes at this point it may
* be a good idea to set them aside and return for more,
* unless we haven't finished counting this brigade yet.
*/
/* if there are content bytes, then wrap them in a chunk */
if (bytes > 0) {
apr_size_t hdr_len;
/*
* Insert the chunk header, specifying the number of bytes in
* the chunk.
*/
/* XXX might be nice to have APR_OFF_T_FMT_HEX */
hdr_len = apr_snprintf(chunk_hdr, sizeof(chunk_hdr),
"%qx" CRLF, (apr_uint64_t)bytes);
ap_xlate_proto_to_ascii(chunk_hdr, hdr_len);
e = ap_bucket_create_transient(chunk_hdr, hdr_len);
AP_BRIGADE_INSERT_HEAD(b, e);
/*
* Insert the end-of-chunk CRLF before the EOS bucket, or
* appended to the brigade
*/
e = ap_bucket_create_immortal(ASCII_CRLF, 2);
if (eos != NULL) {
AP_BUCKET_INSERT_BEFORE(eos, e);
}
else {
AP_BRIGADE_INSERT_TAIL(b, e);
}
}
/* RFC 2616, Section 3.6.1
*
* If there is an EOS bucket, then prefix it with:
* 1) the last-chunk marker ("0" CRLF)
* 2) the trailer
* 3) the end-of-chunked body CRLF
*
* If there is no EOS bucket, then do nothing.
*
* XXX: it would be nice to combine this with the end-of-chunk
* marker above, but this is a bit more straight-forward for
* now.
*/
if (eos != NULL) {
/* XXX: (2) trailers ... does not yet exist */
e = ap_bucket_create_immortal(ASCII_ZERO ASCII_CRLF /* <trailers> */ ASCII_CRLF, 5);
AP_BUCKET_INSERT_BEFORE(eos, e);
}
/* pass the brigade to the next filter. */
rv = ap_pass_brigade(f->next, b);
if (rv != APR_SUCCESS || eos != NULL) {
return rv;
}
}
return APR_SUCCESS;
}
static int core_input_filter(ap_filter_t *f, ap_bucket_brigade *b, ap_input_mode_t mode)
{
ap_bucket *e;
if (!f->ctx) { /* If we haven't passed up the socket yet... */
f->ctx = (void *)1;
e = ap_bucket_create_socket(f->c->client_socket);
AP_BRIGADE_INSERT_TAIL(b, e);
return APR_SUCCESS;
}
else {
/* Either some code lost track of the socket
* bucket or we already found out that the
* client closed.
*/
return APR_EOF;
}
}
/* Default filter. This filter should almost always be used. Its only job
* is to send the headers if they haven't already been sent, and then send
* the actual data.
*/
typedef struct CORE_OUTPUT_FILTER_CTX {
ap_bucket_brigade *b;
} core_output_filter_ctx_t;
#define MAX_IOVEC_TO_WRITE 16
static apr_status_t core_output_filter(ap_filter_t *f, ap_bucket_brigade *b)
{
apr_status_t rv;
ap_bucket_brigade *more = NULL;
apr_size_t bytes_sent = 0, nbytes;
ap_bucket *e;
conn_rec *c = f->c;
core_output_filter_ctx_t *ctx = f->ctx;
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];
apr_file_t *fd = NULL;
apr_size_t flen = 0;
apr_off_t foffset = 0;
if (ctx == NULL) {
f->ctx = ctx = apr_pcalloc(c->pool, sizeof(core_output_filter_ctx_t));
}
/* If we have a saved brigade, concatenate the new brigade to it */
if (ctx->b) {
AP_BRIGADE_CONCAT(ctx->b, b);
b = ctx->b;
ctx->b = NULL;
}
/* Iterate over the brigade collecting iovecs */
while (b) {
nbytes = 0; /* in case more points to another brigade */
more = NULL;
AP_BRIGADE_FOREACH(e, b) {
if (AP_BUCKET_IS_EOS(e) || AP_BUCKET_IS_FLUSH(e)) {
break;
}
else if (AP_BUCKET_IS_FILE(e)) {
ap_bucket_file *a = e->data;
/* Assume there is at most one AP_BUCKET_FILE in the brigade */
fd = a->fd;
flen = e->length;
foffset = a->offset;
}
else {
const char *str;
apr_size_t n;
rv = ap_bucket_read(e, &str, &n, AP_BLOCK_READ);
if (n) {
nbytes += n;
if (!fd) {
vec[nvec].iov_base = (char*) str;
vec[nvec].iov_len = n;
nvec++;
}
else {
/* The bucket is a trailer to a file bucket */
vec_trailers[nvec_trailers].iov_base = (char*) str;
vec_trailers[nvec_trailers].iov_len = n;
nvec_trailers++;
}
}
}
if ((nvec == MAX_IOVEC_TO_WRITE) || (nvec_trailers == MAX_IOVEC_TO_WRITE)) {
/* Split the brigade and break */
if (AP_BUCKET_NEXT(e) != AP_BRIGADE_SENTINEL(b)) {
more = ap_brigade_split(b, AP_BUCKET_NEXT(e));
}
break;
}
}
/* Completed iterating over the brigades, now determine if we want to
* buffer the brigade or send the brigade out on the network
*/
if ((!fd && (!more) && (nbytes < MIN_SIZE_TO_WRITE) && !AP_BUCKET_IS_FLUSH(e))
|| (AP_BUCKET_IS_EOS(e) && c->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 (AP_BUCKET_IS_EOS(e)) {
AP_BUCKET_REMOVE(e);
ap_bucket_destroy(e);
}
ap_save_brigade(f, &ctx->b, &b);
return APR_SUCCESS;
}
if (fd) {
apr_hdtr_t hdtr;
#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 (!c->keepalive) {
/* Prepare the socket to be reused */
flags |= APR_SENDFILE_DISCONNECT_SOCKET;
}
nbytes = flen;
rv = apr_sendfile(c->client_socket,
fd, /* The file to send */
&hdtr, /* Header and trailer iovecs */
&foffset, /* Offset in file to begin sending from */
&nbytes,
flags);
bytes_sent = nbytes;
/* If apr_sendfile() returns APR_ENOTIMPL, call send_the_file() to
* loop on apr_read/apr_send to send the file. Our Windows binary
* distributions (which work on Windows 9x/NT) are compiled on
* Windows NT. TransmitFile is not available on Windows 95/98 and
* we discover this at runtime when apr_sendfile() returns
* APR_ENOTIMPL. Having apr_sendfile() return APR_ENOTIMPL seems
* the cleanest way to handle this case.
*/
if (rv == APR_ENOTIMPL) {
#endif
rv = send_the_file(c, fd, &hdtr, foffset, flen, &bytes_sent);
#if APR_HAS_SENDFILE
}
#endif
}
else {
rv = writev_it_all(c->client_socket,
vec, nvec,
nbytes, &bytes_sent);
}
ap_brigade_destroy(b);
if (rv != APR_SUCCESS) {
/* XXX: log the error */
if (more)
ap_brigade_destroy(more);
return rv;
}
nvec = 0;
nvec_trailers = 0;
b = more;
} /* end while () */
return APR_SUCCESS;
}
static const handler_rec core_handlers[] = {
{ "*/*", default_handler },
{ "default-handler", default_handler },
{ NULL, NULL }
};
static void core_pre_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp)
{
ap_init_bucket_types(pconf);
}
static void core_post_config(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
ap_set_version(pconf);
}
static void core_open_logs(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s)
{
ap_open_logs(s, pconf);
}
static const char *core_method(const request_rec *r)
{ return "http"; }
static unsigned short core_port(const request_rec *r)
{ return DEFAULT_HTTP_PORT; }
static void core_insert_filter(request_rec *r)
{
int i;
core_dir_config *conf = (core_dir_config *)
ap_get_module_config(r->per_dir_config,
&core_module);
char **items = (char **)conf->output_filters->elts;
for (i = 0; i < conf->output_filters->nelts; i++) {
char *foobar = items[i];
ap_add_output_filter(foobar, NULL, r, r->connection);
}
items = (char **)conf->input_filters->elts;
for (i = 0; i < conf->input_filters->nelts; i++) {
char *foobar = items[i];
ap_add_input_filter(foobar, NULL, r, r->connection);
}
}
static void register_hooks(void)
{
ap_hook_pre_config(core_pre_config, NULL, NULL, AP_HOOK_REALLY_FIRST);
ap_hook_post_config(core_post_config,NULL,NULL,AP_HOOK_REALLY_FIRST);
ap_hook_translate_name(ap_core_translate,NULL,NULL,AP_HOOK_REALLY_LAST);
ap_hook_pre_connection(ap_pre_http_connection,NULL,NULL,
AP_HOOK_REALLY_LAST);
ap_hook_process_connection(ap_process_http_connection,NULL,NULL,
AP_HOOK_REALLY_LAST);
ap_hook_http_method(core_method,NULL,NULL,AP_HOOK_REALLY_LAST);
ap_hook_default_port(core_port,NULL,NULL,AP_HOOK_REALLY_LAST);
ap_hook_open_logs(core_open_logs,NULL,NULL,AP_HOOK_MIDDLE);
/* FIXME: I suspect we can eliminate the need for these - Ben */
ap_hook_type_checker(do_nothing,NULL,NULL,AP_HOOK_REALLY_LAST);
ap_hook_access_checker(do_nothing,NULL,NULL,AP_HOOK_REALLY_LAST);
/* register the core's insert_filter hook and register core-provided
* filters
*/
ap_hook_insert_filter(core_insert_filter, NULL, NULL, AP_HOOK_MIDDLE);
ap_register_input_filter("HTTP_IN", ap_http_filter, AP_FTYPE_CONNECTION);
ap_register_input_filter("DECHUNK", ap_dechunk_filter, AP_FTYPE_TRANSCODE);
ap_register_input_filter("CORE_IN", core_input_filter, AP_FTYPE_NETWORK);
ap_register_output_filter("HTTP_HEADER", ap_http_header_filter,
AP_FTYPE_HTTP_HEADER);
ap_register_output_filter("CONTENT_LENGTH", ap_content_length_filter,
AP_FTYPE_HTTP_HEADER);
ap_register_output_filter("CORE", core_output_filter, AP_FTYPE_NETWORK);
ap_register_output_filter("SUBREQ_CORE", ap_sub_req_output_filter,
AP_FTYPE_CONTENT);
ap_register_output_filter("CHUNK", chunk_filter, AP_FTYPE_TRANSCODE);
ap_register_output_filter("COALESCE", coalesce_filter, AP_FTYPE_CONNECTION);
ap_register_output_filter("BYTERANGE", ap_byterange_filter,
AP_FTYPE_TRANSCODE);
}
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 */
core_handlers, /* handlers */
register_hooks /* register hooks */
};