protocol.c revision 3fde4c273ea649d1320ec9c51e7d096cd9340a94
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere/* ====================================================================
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * The Apache Software License, Version 1.1
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Copyright (c) 2000-2001 The Apache Software Foundation. All rights
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * reserved.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Redistribution and use in source and binary forms, with or without
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * modification, are permitted provided that the following conditions
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * are met:
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * 1. Redistributions of source code must retain the above copyright
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * notice, this list of conditions and the following disclaimer.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * 2. Redistributions in binary form must reproduce the above copyright
3f08db06526d6901aa08c110b5bc7dde6bc39905nd * notice, this list of conditions and the following disclaimer in
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * the documentation and/or other materials provided with the
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * distribution.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
3f08db06526d6901aa08c110b5bc7dde6bc39905nd * 3. The end-user documentation included with the redistribution,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * if any, must include the following acknowledgment:
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * "This product includes software developed by the
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Apache Software Foundation (http://www.apache.org/)."
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Alternately, this acknowledgment may appear in the software itself,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * if and wherever such third-party acknowledgments normally appear.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
fac8c35bfb158112226ab43ddf84d59daca5dc30nd * 4. The names "Apache" and "Apache Software Foundation" must
d474d8ef01ec5c2a09341cd148851ed383c3287crbowen * not be used to endorse or promote products derived from this
d474d8ef01ec5c2a09341cd148851ed383c3287crbowen * software without prior written permission. For written
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * permission, please contact apache@apache.org.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * 5. Products derived from this software may not be called "Apache",
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * nor may "Apache" appear in their name, without prior written
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * permission of the Apache Software Foundation.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
fabd4bc0c499704e644a74f78cc3871436824ea0jim * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * SUCH DAMAGE.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * ====================================================================
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * This software consists of voluntary contributions made by many
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * individuals on behalf of the Apache Software Foundation. For more
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * information on the Apache Software Foundation, please see
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * <http://www.apache.org/>.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Portions of this software are based upon public domain software
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * originally written at the National Center for Supercomputing Applications,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * University of Illinois, Urbana-Champaign.
fabd4bc0c499704e644a74f78cc3871436824ea0jim */
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor
bed3c2e56e8f3328e780200466b9d009093db468sf/*
bed3c2e56e8f3328e780200466b9d009093db468sf * http_protocol.c --- routines which directly communicate with the client.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere *
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * Code originally by Rob McCool; much redone by Robert S. Thau
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * and the Apache Software Foundation.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere */
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere
591f748210dc55f2972482dddc84bb6bac61d6b9noodl#include "apr.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "apr_strings.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "apr_buckets.h"
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#include "apr_lib.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "apr_signal.h"
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#define APR_WANT_STDIO /* for sscanf */
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#define APR_WANT_STRFUNC
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#define APR_WANT_MEMFUNC
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "apr_want.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#define CORE_PRIVATE
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "util_filter.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "ap_config.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "httpd.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_config.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_core.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_protocol.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_main.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_request.h"
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include "http_vhost.h"
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#include "http_log.h" /* For errors detected in basic auth common
fabd4bc0c499704e644a74f78cc3871436824ea0jim * support code... */
fabd4bc0c499704e644a74f78cc3871436824ea0jim#include "util_charset.h"
4126704c4950bfd46d32ad54e3b106ac6d868a73sf#include "util_ebcdic.h"
fabd4bc0c499704e644a74f78cc3871436824ea0jim
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#if APR_HAVE_STDARG_H
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#include <stdarg.h>
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere#endif
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#if APR_HAVE_UNISTD_H
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#include <unistd.h>
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor#endif
fabd4bc0c499704e644a74f78cc3871436824ea0jim
fabd4bc0c499704e644a74f78cc3871436824ea0jim
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclereAPR_HOOK_STRUCT(
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor APR_HOOK_LINK(post_read_request)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor APR_HOOK_LINK(log_transaction)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor APR_HOOK_LINK(http_method)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor APR_HOOK_LINK(default_port)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor
999942e8e84bcae9b439ab30a040b1b997b343c9gryzorAP_DECLARE_DATA ap_filter_rec_t *ap_old_write_func = NULL;
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor/*
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * Builds the content-type that should be sent to the client from the
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * content-type specified. The following rules are followed:
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * - if type is NULL, type is set to ap_default_type(r)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * - if charset adding is disabled, stop processing and return type.
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * - then, if there are no parameters on type, add the default charset
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * - return type
fabd4bc0c499704e644a74f78cc3871436824ea0jim */
999942e8e84bcae9b439ab30a040b1b997b343c9gryzorAP_DECLARE(const char *)ap_make_content_type(request_rec *r, const char *type)
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor{
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor static const char *needcset[] = {
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere "text/plain",
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere "text/html",
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere NULL };
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere const char **pcset;
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere core_dir_config *conf =
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere (core_dir_config *)ap_get_module_config(r->per_dir_config,
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere &core_module);
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere
9a58dc6a2b26ec128b1270cf48810e705f1a90dbsf if (!type) {
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere type = ap_default_type(r);
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere }
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) {
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor return type;
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere }
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor if (ap_strcasestr(type, "charset=") != NULL) {
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor /* already has parameter, do nothing */
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor /* XXX we don't check the validity */
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor ;
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor }
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere else {
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor /* see if it makes sense to add the charset. At present,
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor * we only add it if the Content-type is one of needcset[]
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor */
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor for (pcset = needcset; *pcset ; pcset++) {
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor if (ap_strcasestr(type, *pcset) != NULL) {
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor type = apr_pstrcat(r->pool, type, "; charset=",
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor conf->add_default_charset_name, NULL);
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor break;
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor }
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor }
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor }
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor return type;
999942e8e84bcae9b439ab30a040b1b997b343c9gryzor}
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclereAP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength)
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere{
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere r->clength = clength;
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere apr_table_setn(r->headers_out, "Content-Length",
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere apr_off_t_toa(r->pool, clength));
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere}
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere
fac8c35bfb158112226ab43ddf84d59daca5dc30nd/*
d474d8ef01ec5c2a09341cd148851ed383c3287crbowen * Return the latest rational time from a request/mtime (modification time)
d474d8ef01ec5c2a09341cd148851ed383c3287crbowen * pair. We return the mtime unless it's in the future, in which case we
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * return the current time. We use the request time as a reference in order
9c1260efa52c82c2a58e5b5f20cd6902563d95f5rbowen * to limit the number of calls to time(). We don't check for futurosity
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere * unless the mtime is at least as new as the reference.
e3659090e9bb9934465dbb6c6212ba4c512190b0jfclere */
AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime)
{
apr_time_t now;
/* For all static responses, it's almost certain that the file was
* last modified before the beginning of the request. So there's
* no reason to call time(NULL) again. But if the response has been
* created on demand, then it might be newer than the time the request
* started. In this event we really have to call time(NULL) again
* so that we can give the clients the most accurate Last-Modified. If we
* were given a time in the future, we return the current time - the
* Last-Modified can't be in the future.
*/
now = (mtime < r->request_time) ? r->request_time : apr_time_now();
return (mtime > now) ? now : mtime;
}
/* Get a line of protocol input, including any continuation lines
* caused by MIME folding (or broken clients) if fold != 0, and place it
* in the buffer s, of size n bytes, without the ending newline.
*
* Returns:
* the length of s (normal case),
* n (buffer full),
* -1 (other errors)
*
* Notes: Because the buffer uses 1 char for NUL, the most we can return is
* (n - 1) actual characters.
*
* If no LF is detected on the last line due to a dropped connection
* or a full buffer, that's considered an error.
*/
AP_DECLARE(int) ap_rgetline(char **s, int n, request_rec *r, int fold)
{
char *pos;
char *last_char;
const char *temp;
int retval;
apr_size_t total = 0;
int looking_ahead = 0;
apr_size_t length;
core_request_config *req_cfg;
apr_bucket_brigade *b;
apr_bucket *e;
int do_alloc = (*s == NULL);
apr_size_t alloc_size = 0;
req_cfg = (core_request_config *)
ap_get_module_config(r->request_config, &core_module);
b = req_cfg->bb;
/* make sure it's empty unless we're folding */
AP_DEBUG_ASSERT(fold || APR_BRIGADE_EMPTY(b));
while (1) {
if (APR_BRIGADE_EMPTY(b)) {
apr_off_t zero = 0;
if ((retval = ap_get_brigade(r->input_filters, b,
AP_MODE_GETLINE,
APR_BLOCK_READ,
&zero)) != APR_SUCCESS ||
APR_BRIGADE_EMPTY(b)) {
apr_brigade_destroy(b);
return -1;
}
}
e = APR_BRIGADE_FIRST(b);
if (APR_BUCKET_IS_EOS(e)) {
apr_brigade_destroy(b);
return -1;
}
if (e->length == 0) {
apr_bucket_delete(e);
continue;
}
retval = apr_bucket_read(e, &temp, &length, APR_BLOCK_READ);
if (retval != APR_SUCCESS) {
apr_brigade_destroy(b);
ap_log_rerror(APLOG_MARK, APLOG_ERR, retval, r, "apr_bucket_read() failed");
if (total) {
break; /* report previously-read data to caller, do ap_xlate_proto_to_ascii() */
}
else {
return -1;
}
}
if ((looking_ahead) && (*temp != APR_ASCII_BLANK) && (*temp != APR_ASCII_TAB)) {
/* can't fold because next line isn't indented,
* so return what we have. lookahead brigade is
* stashed on req_cfg->bb
*/
AP_DEBUG_ASSERT(!APR_BRIGADE_EMPTY(req_cfg->bb));
break;
}
if (total + length - 1 < (apr_size_t)n) {
if (do_alloc) {
if (!*s) {
alloc_size = length;
*s = apr_palloc(r->pool, length + 2); /* +2 for LF, null */
}
else if (total + length > alloc_size) {
apr_size_t new_size = alloc_size;
char *new_buffer;
do {
new_size *= 2;
} while (total + length > new_size);
new_buffer = apr_palloc(r->pool, new_size + 2);
memcpy(new_buffer, *s, total);
alloc_size = new_size;
*s = new_buffer;
}
}
pos = *s + total;
last_char = pos + length - 1;
memcpy(pos, temp, length);
apr_bucket_delete(e);
}
else {
/* input line was larger than the caller's buffer */
apr_brigade_destroy(b);
/* don't need to worry about req_cfg->bb being bogus.
* the request is about to die, and ErrorDocument
* redirects get a new req_cfg->bb
*/
return n;
}
pos = last_char; /* Point at the last character */
if (*pos == APR_ASCII_LF) { /* Did we get a full line of input? */
if (pos > *s && *(pos - 1) == APR_ASCII_CR) {
--pos; /* zap optional CR before LF */
}
/*
* Trim any extra trailing spaces or tabs except for the first
* space or tab at the beginning of a blank string. This makes
* it much easier to check field values for exact matches, and
* saves memory as well. Terminate string at end of line.
*/
while (pos > ((*s) + 1) &&
(*(pos - 1) == APR_ASCII_BLANK || *(pos - 1) == APR_ASCII_TAB)) {
--pos; /* trim extra trailing spaces or tabs */
}
*pos = '\0'; /* zap end of string */
total = pos - *s; /* update total string length */
/* look ahead another line if line folding is desired
* and this line isn't empty
*/
if (fold && total) {
looking_ahead = 1;
}
else {
AP_DEBUG_ASSERT(APR_BRIGADE_EMPTY(req_cfg->bb));
break;
}
}
else {
/* no LF yet...character mode client (telnet)...keep going
* bump past last character read,
* and set total in case we bail before finding a LF
*/
total = ++pos - *s;
looking_ahead = 0; /* only appropriate right after LF */
}
}
ap_xlate_proto_from_ascii(*s, total);
return total;
}
AP_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold)
{
char *tmp_s = s;
return ap_rgetline(&tmp_s, n, r, fold);
}
/* parse_uri: break apart the uri
* Side Effects:
* - sets r->args to rest after '?' (or NULL if no '?')
* - sets r->uri to request uri (without r->args part)
* - sets r->hostname (if not set already) from request (scheme://host:port)
*/
AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri)
{
int status = HTTP_OK;
r->unparsed_uri = apr_pstrdup(r->pool, uri);
if (r->method_number == M_CONNECT) {
status = apr_uri_parse_hostinfo(r->pool, uri, &r->parsed_uri);
}
else {
/* Simple syntax Errors in URLs are trapped by parse_uri_components(). */
status = apr_uri_parse(r->pool, uri, &r->parsed_uri);
}
if (status == APR_SUCCESS) {
/* if it has a scheme we may need to do absoluteURI vhost stuff */
if (r->parsed_uri.scheme
&& !strcasecmp(r->parsed_uri.scheme, ap_http_method(r))) {
r->hostname = r->parsed_uri.hostname;
}
else if (r->method_number == M_CONNECT) {
r->hostname = r->parsed_uri.hostname;
}
r->args = r->parsed_uri.query;
r->uri = r->parsed_uri.path ? r->parsed_uri.path
: apr_pstrdup(r->pool, "/");
#if defined(OS2) || defined(WIN32)
/* Handle path translations for OS/2 and plug security hole.
* This will prevent "http://www.wherever.com/..\..\/" from
* returning a directory for the root drive.
*/
{
char *x;
for (x = r->uri; (x = strchr(x, '\\')) != NULL; )
*x = '/';
}
#endif /* OS2 || WIN32 */
}
else {
r->args = NULL;
r->hostname = NULL;
r->status = HTTP_BAD_REQUEST; /* set error status */
r->uri = apr_pstrdup(r->pool, uri);
}
}
static int read_request_line(request_rec *r)
{
const char *ll;
const char *uri;
const char *pro;
#if 0
conn_rec *conn = r->connection;
#endif
int major = 1, minor = 0; /* Assume HTTP/1.0 if non-"HTTP" protocol */
int len;
/* Read past empty lines until we get a real request line,
* a read error, the connection closes (EOF), or we timeout.
*
* We skip empty lines because browsers have to tack a CRLF on to the end
* of POSTs to support old CERN webservers. But note that we may not
* have flushed any previous response completely to the client yet.
* We delay the flush as long as possible so that we can improve
* performance for clients that are pipelining requests. If a request
* is pipelined then we won't block during the (implicit) read() below.
* If the requests aren't pipelined, then the client is still waiting
* for the final buffer flush from us, and we will block in the implicit
* read(). B_SAFEREAD ensures that the BUFF layer flushes if it will
* have to block during a read.
*/
while ((len = ap_rgetline(&(r->the_request),
DEFAULT_LIMIT_REQUEST_LINE + 2, r, 0)) <= 0) {
if (len < 0) { /* includes EOF */
/* this is a hack to make sure that request time is set,
* it's not perfect, but it's better than nothing
*/
r->request_time = apr_time_now();
return 0;
}
}
/* we've probably got something to do, ignore graceful restart requests */
r->request_time = apr_time_now();
ll = r->the_request;
r->method = ap_getword_white(r->pool, &ll);
#if 0
/* XXX If we want to keep track of the Method, the protocol module should do
* it. That support isn't in the scoreboard yet. Hopefully next week
* sometime. rbb */
ap_update_connection_status(AP_CHILD_THREAD_FROM_ID(conn->id), "Method", r->method);
#endif
uri = ap_getword_white(r->pool, &ll);
/* Provide quick information about the request method as soon as known */
r->method_number = ap_method_number_of(r->method);
if (r->method_number == M_GET && r->method[0] == 'H') {
r->header_only = 1;
}
ap_parse_uri(r, uri);
/* ap_getline returns (size of max buffer - 1) if it fills up the
* buffer before finding the end-of-line. This is only going to
* happen if it exceeds the configured limit for a request-line.
*/
if (len > r->server->limit_req_line) {
r->status = HTTP_REQUEST_URI_TOO_LARGE;
r->proto_num = HTTP_VERSION(1,0);
r->protocol = apr_pstrdup(r->pool, "HTTP/1.0");
return 0;
}
if (ll[0]) {
r->assbackwards = 0;
pro = ll;
len = strlen(ll);
} else {
r->assbackwards = 1;
pro = "HTTP/0.9";
len = 8;
}
r->protocol = apr_pstrmemdup(r->pool, pro, len);
/* XXX ap_update_connection_status(conn->id, "Protocol", r->protocol); */
/* Avoid sscanf in the common case */
if (len == 8 &&
pro[0] == 'H' && pro[1] == 'T' && pro[2] == 'T' && pro[3] == 'P' &&
pro[4] == '/' && apr_isdigit(pro[5]) && pro[6] == '.' &&
apr_isdigit(pro[7])) {
r->proto_num = HTTP_VERSION(pro[5] - '0', pro[7] - '0');
} else if (2 == sscanf(r->protocol, "HTTP/%u.%u", &major, &minor)
&& minor < HTTP_VERSION(1,0)) /* don't allow HTTP/0.1000 */
r->proto_num = HTTP_VERSION(major, minor);
else
r->proto_num = HTTP_VERSION(1,0);
return 1;
}
static void get_mime_headers(request_rec *r)
{
char* field;
char *value;
int len;
int fields_read = 0;
apr_table_t *tmp_headers;
/* We'll use apr_table_overlap later to merge these into r->headers_in. */
tmp_headers = apr_table_make(r->pool, 50);
/*
* Read header lines until we get the empty separator line, a read error,
* the connection closes (EOF), reach the server limit, or we timeout.
*/
field = NULL;
while ((len = ap_rgetline(&field, DEFAULT_LIMIT_REQUEST_FIELDSIZE + 2,
r, 1)) > 0) {
if (r->server->limit_req_fields &&
(++fields_read > r->server->limit_req_fields)) {
r->status = HTTP_BAD_REQUEST;
apr_table_setn(r->notes, "error-notes",
"The number of request header fields exceeds "
"this server's limit.");
return;
}
/* ap_getline returns (size of max buffer - 1) if it fills up the
* buffer before finding the end-of-line. This is only going to
* happen if it exceeds the configured limit for a field size.
*/
if (len > r->server->limit_req_fieldsize) {
r->status = HTTP_BAD_REQUEST;
apr_table_setn(r->notes, "error-notes",
apr_pstrcat(r->pool,
"Size of a request header field "
"exceeds server limit.<br />\n"
"<pre>\n",
ap_escape_html(r->pool, field),
"</pre>\n", NULL));
return;
}
if (!(value = strchr(field, ':'))) { /* Find the colon separator */
r->status = HTTP_BAD_REQUEST; /* or abort the bad request */
apr_table_setn(r->notes, "error-notes",
apr_pstrcat(r->pool,
"Request header field is missing "
"colon separator.<br />\n"
"<pre>\n",
ap_escape_html(r->pool, field),
"</pre>\n", NULL));
return;
}
*value = '\0';
++value;
while (*value == ' ' || *value == '\t') {
++value; /* Skip to start of value */
}
apr_table_addn(tmp_headers, field, value);
field = NULL; /* to cause ap_rgetline to allocate a new one */
}
apr_table_overlap(r->headers_in, tmp_headers, APR_OVERLAP_TABLES_MERGE);
}
request_rec *ap_read_request(conn_rec *conn)
{
request_rec *r;
apr_pool_t *p;
const char *expect;
int access_status;
apr_pool_create(&p, conn->pool);
r = apr_pcalloc(p, sizeof(request_rec));
r->pool = p;
r->connection = conn;
r->server = conn->base_server;
r->user = NULL;
r->ap_auth_type = NULL;
r->allowed_methods = ap_make_method_list(p, 2);
r->headers_in = apr_table_make(r->pool, 25);
r->subprocess_env = apr_table_make(r->pool, 25);
r->headers_out = apr_table_make(r->pool, 12);
r->err_headers_out = apr_table_make(r->pool, 5);
r->notes = apr_table_make(r->pool, 5);
r->request_config = ap_create_request_config(r->pool);
/* Must be set before we run create request hook */
r->output_filters = conn->output_filters;
r->input_filters = conn->input_filters;
ap_run_create_request(r);
r->per_dir_config = r->server->lookup_defaults;
r->sent_bodyct = 0; /* bytect isn't for body */
r->read_length = 0;
r->read_body = REQUEST_NO_BODY;
r->status = HTTP_REQUEST_TIME_OUT; /* Until we get a request */
r->the_request = NULL;
/* Get the request... */
if (!read_request_line(r)) {
if (r->status == HTTP_REQUEST_URI_TOO_LARGE) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"request failed: URI too long");
ap_send_error_response(r, 0);
ap_run_log_transaction(r);
return r;
}
return NULL;
}
if (!r->assbackwards) {
get_mime_headers(r);
if (r->status != HTTP_REQUEST_TIME_OUT) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"request failed: error reading the headers");
ap_send_error_response(r, 0);
ap_run_log_transaction(r);
return r;
}
}
else {
if (r->header_only) {
/*
* Client asked for headers only with HTTP/0.9, which doesn't send
* headers! Have to dink things just to make sure the error message
* comes through...
*/
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"client sent invalid HTTP/0.9 request: HEAD %s",
r->uri);
r->header_only = 0;
r->status = HTTP_BAD_REQUEST;
ap_send_error_response(r, 0);
ap_run_log_transaction(r);
return r;
}
}
r->status = HTTP_OK; /* Until further notice. */
/* update what we think the virtual host is based on the headers we've
* now read. may update status.
*/
ap_update_vhost_from_headers(r);
/* we may have switched to another server */
r->per_dir_config = r->server->lookup_defaults;
if ((!r->hostname && (r->proto_num >= HTTP_VERSION(1,1))) ||
((r->proto_num == HTTP_VERSION(1,1)) &&
!apr_table_get(r->headers_in, "Host"))) {
/*
* Client sent us an HTTP/1.1 or later request without telling us the
* hostname, either with a full URL or a Host: header. We therefore
* need to (as per the 1.1 spec) send an error. As a special case,
* HTTP/1.1 mentions twice (S9, S14.23) that a request MUST contain
* a Host: header, and the server MUST respond with 400 if it doesn't.
*/
r->status = HTTP_BAD_REQUEST;
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"client sent HTTP/1.1 request without hostname "
"(see RFC2616 section 14.23): %s", r->uri);
}
if (r->status != HTTP_OK) {
ap_send_error_response(r, 0);
ap_run_log_transaction(r);
return r;
}
if (((expect = apr_table_get(r->headers_in, "Expect")) != NULL) &&
(expect[0] != '\0')) {
/*
* The Expect header field was added to HTTP/1.1 after RFC 2068
* as a means to signal when a 100 response is desired and,
* unfortunately, to signal a poor man's mandatory extension that
* the server must understand or return 417 Expectation Failed.
*/
if (strcasecmp(expect, "100-continue") == 0) {
r->expecting_100 = 1;
}
else {
r->status = HTTP_EXPECTATION_FAILED;
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r,
"client sent an unrecognized expectation value of "
"Expect: %s", expect);
ap_send_error_response(r, 0);
(void) ap_discard_request_body(r);
ap_run_log_transaction(r);
return r;
}
}
ap_add_input_filter("HTTP_IN", NULL, r, r->connection);
if ((access_status = ap_run_post_read_request(r))) {
ap_die(access_status, r);
ap_run_log_transaction(r);
return NULL;
}
return r;
}
/*
* A couple of other functions which initialize some of the fields of
* a request structure, as appropriate for adjuncts of one kind or another
* to a request in progress. Best here, rather than elsewhere, since
* *someone* has to set the protocol-specific fields...
*/
void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r)
{
rnew->the_request = r->the_request; /* Keep original request-line */
rnew->assbackwards = 1; /* Don't send headers from this. */
rnew->no_local_copy = 1; /* Don't try to send HTTP_NOT_MODIFIED for a
* fragment. */
rnew->method = "GET";
rnew->method_number = M_GET;
rnew->protocol = "INCLUDED";
rnew->status = HTTP_OK;
rnew->headers_in = r->headers_in;
rnew->subprocess_env = apr_table_copy(rnew->pool, r->subprocess_env);
rnew->headers_out = apr_table_make(rnew->pool, 5);
rnew->err_headers_out = apr_table_make(rnew->pool, 5);
rnew->notes = apr_table_make(rnew->pool, 5);
rnew->expecting_100 = r->expecting_100;
rnew->read_length = r->read_length;
rnew->read_body = REQUEST_NO_BODY;
rnew->main = (request_rec *) r;
}
static void end_output_stream(request_rec *r)
{
apr_bucket_brigade *bb;
apr_bucket *b;
bb = apr_brigade_create(r->pool);
b = apr_bucket_eos_create();
APR_BRIGADE_INSERT_TAIL(bb, b);
ap_pass_brigade(r->output_filters, bb);
}
void ap_finalize_sub_req_protocol(request_rec *sub)
{
end_output_stream(sub);
}
/* finalize_request_protocol is called at completion of sending the
* response. Its sole purpose is to send the terminating protocol
* information for any wrappers around the response message body
* (i.e., transfer encodings). It should have been named finalize_response.
*/
AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r)
{
while (r->next) {
r = r->next;
}
/* tell the filter chain there is no more content coming */
if (!r->eos_sent) {
end_output_stream(r);
}
}
/*
* Support for the Basic authentication protocol, and a bit for Digest.
*/
AP_DECLARE(void) ap_note_auth_failure(request_rec *r)
{
const char *type = ap_auth_type(r);
if (type) {
if (!strcasecmp(type, "Basic"))
ap_note_basic_auth_failure(r);
else if (!strcasecmp(type, "Digest"))
ap_note_digest_auth_failure(r);
}
else {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
0, r, "need AuthType to note auth failure: %s", r->uri);
}
}
AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r)
{
const char *type = ap_auth_type(r);
/* if there is no AuthType configure or it is something other than
* Basic, let ap_note_auth_failure() deal with it
*/
if (!type || strcasecmp(type, "Basic"))
ap_note_auth_failure(r);
else
apr_table_setn(r->err_headers_out,
(PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate" : "WWW-Authenticate",
apr_pstrcat(r->pool, "Basic realm=\"", ap_auth_name(r), "\"",
NULL));
}
AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r)
{
apr_table_setn(r->err_headers_out,
(PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authenticate" : "WWW-Authenticate",
apr_psprintf(r->pool, "Digest realm=\"%s\", nonce=\"%llx\"",
ap_auth_name(r), r->request_time));
}
AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw)
{
const char *auth_line = apr_table_get(r->headers_in,
(PROXYREQ_PROXY == r->proxyreq) ? "Proxy-Authorization"
: "Authorization");
const char *t;
if (!(t = ap_auth_type(r)) || strcasecmp(t, "Basic"))
return DECLINED;
if (!ap_auth_name(r)) {
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
0, r, "need AuthName: %s", r->uri);
return HTTP_INTERNAL_SERVER_ERROR;
}
if (!auth_line) {
ap_note_basic_auth_failure(r);
return HTTP_UNAUTHORIZED;
}
if (strcasecmp(ap_getword(r->pool, &auth_line, ' '), "Basic")) {
/* Client tried to authenticate using wrong auth scheme */
ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
"client used wrong authentication scheme: %s", r->uri);
ap_note_basic_auth_failure(r);
return HTTP_UNAUTHORIZED;
}
while (*auth_line== ' ' || *auth_line== '\t') {
auth_line++;
}
t = ap_pbase64decode(r->pool, auth_line);
/* Note that this allocation has to be made from r->connection->pool
* because it has the lifetime of the connection. The other allocations
* are temporary and can be tossed away any time.
*/
r->user = ap_getword_nulls (r->pool, &t, ':');
r->ap_auth_type = "Basic";
*pw = t;
return OK;
}
struct content_length_ctx {
apr_bucket_brigade *saved;
int compute_len;
apr_size_t curr_len;
};
/* This filter computes the content length, but it also computes the number
* of bytes sent to the client. This means that this filter will always run
* through all of the buckets in all brigades
*/
AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *f,
apr_bucket_brigade *b)
{
request_rec *r = f->r;
struct content_length_ctx *ctx;
apr_status_t rv;
apr_bucket *e;
int eos = 0, flush = 0, partial_send_okay = 0;
apr_bucket_brigade *more, *split;
apr_read_type_e eblock = APR_NONBLOCK_READ;
ctx = f->ctx;
if (!ctx) { /* first time through */
f->ctx = ctx = apr_pcalloc(r->pool, sizeof(struct content_length_ctx));
ctx->compute_len = 1; /* Assume we will compute the length */
}
/* Humm, is this check the best it can be?
* - protocol >= HTTP/1.1 implies support for chunking
* - non-keepalive implies the end of byte stream will be signaled
* by a connection close
* In both cases, we can send bytes to the client w/o needing to
* compute content-length.
* Todo:
* We should be able to force connection close from this filter
* when we see we are buffering too much.
*/
if ((r->proto_num >= HTTP_VERSION(1,1)) ||
(!f->r->connection->keepalive)) {
partial_send_okay = 1;
}
more = b;
while (more) {
b = more;
more = NULL;
split = NULL;
flush = 0;
APR_BRIGADE_FOREACH(e, b) {
const char *ignored;
apr_size_t len;
len = 0;
if (APR_BUCKET_IS_EOS(e)) {
eos = 1;
}
else if (APR_BUCKET_IS_FLUSH(e)) {
if (partial_send_okay) {
split = b;
more = apr_brigade_split(b, APR_BUCKET_NEXT(e));
break;
}
}
else if ((ctx->curr_len > 4*AP_MIN_BYTES_TO_WRITE)) {
/* If we've accumulated more than 4xAP_MIN_BYTES_TO_WRITE and
* the client supports chunked encoding, send what we have
* and come back for more.
*/
if (partial_send_okay) {
split = b;
more = apr_brigade_split(b, e);
break;
}
}
if (e->length == -1) { /* if length unknown */
rv = apr_bucket_read(e, &ignored, &len, eblock);
if (rv == APR_SUCCESS) {
/* Attempt a nonblocking read next time through */
eblock = APR_NONBLOCK_READ;
}
else if (APR_STATUS_IS_EAGAIN(rv)) {
/* Make the next read blocking. If the client supports chunked
* encoding, flush the filter stack to the network.
*/
eblock = APR_BLOCK_READ;
if (partial_send_okay) {
split = b;
more = apr_brigade_split(b, e);
flush = 1;
break;
}
}
else if (rv != APR_EOF) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r,
"ap_content_length_filter: apr_bucket_read() failed");
return rv;
}
}
else {
len = e->length;
}
ctx->curr_len += len;
r->bytes_sent += len;
}
if (split) {
ctx->compute_len = 0; /* Ooops, can't compute the length now */
ctx->curr_len = 0;
if (ctx->saved) {
APR_BRIGADE_CONCAT(ctx->saved, split);
apr_brigade_destroy(split);
split = ctx->saved;
ctx->saved = NULL;
}
if (flush) {
rv = ap_fflush(f->next, split);
}
else {
rv = ap_pass_brigade(f->next, split);
}
if (rv != APR_SUCCESS)
return rv;
}
}
if ((ctx->curr_len < AP_MIN_BYTES_TO_WRITE) && !eos) {
return ap_save_brigade(f, &ctx->saved, &b, (r->main) ? r->main->pool : r->pool);
}
if (ctx->compute_len) {
/* save the brigade; we can't pass any data to the next
* filter until we have the entire content length
*/
if (!eos) {
return ap_save_brigade(f, &ctx->saved, &b, r->pool);
}
ap_set_content_length(r, r->bytes_sent);
}
if (ctx->saved) {
APR_BRIGADE_CONCAT(ctx->saved, b);
apr_brigade_destroy(b);
b = ctx->saved;
ctx->saved = NULL;
}
ctx->curr_len = 0;
return ap_pass_brigade(f->next, b);
}
/*
* Send the body of a response to the client.
*/
AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r, apr_off_t offset,
apr_size_t len, apr_size_t *nbytes)
{
apr_bucket_brigade *bb = NULL;
apr_bucket *b;
apr_status_t rv;
bb = apr_brigade_create(r->pool);
b = apr_bucket_file_create(fd, offset, len, r->pool);
APR_BRIGADE_INSERT_TAIL(bb, b);
rv = ap_pass_brigade(r->output_filters, bb);
if (rv != APR_SUCCESS) {
*nbytes = 0; /* no way to tell how many were actually sent */
}
else {
*nbytes = len;
}
return rv;
}
#if APR_HAS_MMAP
/* send data from an in-memory buffer */
AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset,
size_t length)
{
apr_bucket_brigade *bb = NULL;
apr_bucket *b;
bb = apr_brigade_create(r->pool);
b = apr_bucket_mmap_create(mm, offset, length);
APR_BRIGADE_INSERT_TAIL(bb, b);
ap_pass_brigade(r->output_filters, bb);
return mm->size; /* XXX - change API to report apr_status_t? */
}
#endif /* APR_HAS_MMAP */
typedef struct {
apr_bucket_brigade *bb;
} old_write_filter_ctx;
AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(
ap_filter_t *f, apr_bucket_brigade *bb)
{
old_write_filter_ctx *ctx = f->ctx;
AP_DEBUG_ASSERT(ctx);
if (ctx->bb != 0) {
/* whatever is coming down the pipe (we don't care), we
* can simply insert our buffered data at the front and
* pass the whole bundle down the chain.
*/
APR_BRIGADE_CONCAT(ctx->bb, bb);
}
return ap_pass_brigade(f->next, ctx->bb);
}
static apr_status_t buffer_output(request_rec *r,
const char *str, apr_size_t len)
{
ap_filter_t *f;
old_write_filter_ctx *ctx;
if (len == 0)
return APR_SUCCESS;
/* future optimization: record some flags in the request_rec to
* say whether we've added our filter, and whether it is first.
*/
/* this will typically exit on the first test */
for (f = r->output_filters; f != NULL; f = f->next)
if (ap_old_write_func == f->frec)
break;
if (f == NULL) {
/* our filter hasn't been added yet */
ctx = apr_pcalloc(r->pool, sizeof(*ctx));
ap_add_output_filter("OLD_WRITE", ctx, r, r->connection);
f = r->output_filters;
}
/* if the first filter is not our buffering filter, then we have to
* deliver the content through the normal filter chain */
if (f != r->output_filters) {
apr_bucket_brigade *bb = apr_brigade_create(r->pool);
apr_bucket *b = apr_bucket_transient_create(str, len);
APR_BRIGADE_INSERT_TAIL(bb, b);
return ap_pass_brigade(r->output_filters, bb);
}
/* grab the context from our filter */
ctx = r->output_filters->ctx;
if (ctx->bb == NULL) {
ctx->bb = apr_brigade_create(r->pool);
}
return ap_fwrite(f->next, ctx->bb, str, len);
}
AP_DECLARE(int) ap_rputc(int c, request_rec *r)
{
char c2 = (char)c;
if (r->connection->aborted) {
return -1;
}
if (buffer_output(r, &c2, 1) != APR_SUCCESS)
return -1;
return c;
}
AP_DECLARE(int) ap_rputs(const char *str, request_rec *r)
{
apr_size_t len;
if (r->connection->aborted)
return -1;
if (buffer_output(r, str, len = strlen(str)) != APR_SUCCESS)
return -1;
return len;
}
AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r)
{
if (r->connection->aborted)
return -1;
if (buffer_output(r, buf, nbyte) != APR_SUCCESS)
return -1;
return nbyte;
}
struct ap_vrprintf_data {
apr_vformatter_buff_t vbuff;
request_rec *r;
char *buff;
};
static apr_status_t r_flush(apr_vformatter_buff_t *buff)
{
/* callback function passed to ap_vformatter to be called when
* vformatter needs to write into buff and buff.curpos > buff.endpos */
/* ap_vrprintf_data passed as a apr_vformatter_buff_t, which is then
* "downcast" to an ap_vrprintf_data */
struct ap_vrprintf_data *vd = (struct ap_vrprintf_data*)buff;
if (vd->r->connection->aborted)
return -1;
/* r_flush is called when vbuff is completely full */
if (buffer_output(vd->r, vd->buff, AP_IOBUFSIZE)) {
return -1;
}
/* reset the buffer position */
vd->vbuff.curpos = vd->buff;
vd->vbuff.endpos = vd->buff + AP_IOBUFSIZE;
return APR_SUCCESS;
}
AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va)
{
apr_size_t written;
struct ap_vrprintf_data vd;
char vrprintf_buf[AP_IOBUFSIZE];
vd.vbuff.curpos = vrprintf_buf;
vd.vbuff.endpos = vrprintf_buf + AP_IOBUFSIZE;
vd.r = r;
vd.buff = vrprintf_buf;
if (r->connection->aborted)
return -1;
written = apr_vformatter(r_flush, &vd.vbuff, fmt, va);
/* tack on null terminator on remaining string */
*(vd.vbuff.curpos) = '\0';
if (written != -1) {
int n = vd.vbuff.curpos - vrprintf_buf;
/* last call to buffer_output, to finish clearing the buffer */
if (buffer_output(r, vrprintf_buf,n) != APR_SUCCESS)
return -1;
written += n;
}
return written;
}
AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt, ...)
{
va_list va;
int n;
if (r->connection->aborted)
return -1;
va_start(va, fmt);
n = ap_vrprintf(r, fmt, va);
va_end(va);
return n;
}
AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r, ...)
{
va_list va;
const char *s;
apr_size_t len;
apr_size_t written = 0;
if (r->connection->aborted)
return -1;
/* ### TODO: if the total output is large, put all the strings
### into a single brigade, rather than flushing each time we
### fill the buffer */
va_start(va, r);
while (1) {
s = va_arg(va, const char *);
if (s == NULL)
break;
len = strlen(s);
if (buffer_output(r, s, len) != APR_SUCCESS) {
return -1;
}
written += len;
}
va_end(va);
return written;
}
AP_DECLARE(int) ap_rflush(request_rec *r)
{
apr_bucket_brigade *bb;
apr_bucket *b;
bb = apr_brigade_create(r->pool);
b = apr_bucket_flush_create();
APR_BRIGADE_INSERT_TAIL(bb, b);
if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS)
return -1;
return 0;
}
/*
* This function sets the Last-Modified output header field to the value
* of the mtime field in the request structure - rationalized to keep it from
* being in the future.
*/
AP_DECLARE(void) ap_set_last_modified(request_rec *r)
{
if (!r->assbackwards) {
apr_time_t mod_time = ap_rationalize_mtime(r, r->mtime);
char *datestr = apr_palloc(r->pool, APR_RFC822_DATE_LEN);
apr_rfc822_date(datestr, mod_time);
apr_table_setn(r->headers_out, "Last-Modified", datestr);
}
}
AP_IMPLEMENT_HOOK_RUN_ALL(int,post_read_request,
(request_rec *r),(r),OK,DECLINED)
AP_IMPLEMENT_HOOK_RUN_ALL(int,log_transaction,
(request_rec *r),(r),OK,DECLINED)
AP_IMPLEMENT_HOOK_RUN_FIRST(const char *,http_method,
(const request_rec *r),(r),NULL)
AP_IMPLEMENT_HOOK_RUN_FIRST(unsigned short,default_port,
(const request_rec *r),(r),0)