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apache / httpd / 5422fe57879e6867ad06b52ba861ded9b7dd0b91 / . / server / protocol.c
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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* 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.
*/
/*
* http_protocol.c --- routines which directly communicate with the client.
*
* Code originally by Rob McCool; much redone by Robert S. Thau
* and the Apache Software Foundation.
*/
#include "apr.h"
#include "apr_strings.h"
#include "apr_buckets.h"
#include "apr_lib.h"
#include "apr_signal.h"
#define APR_WANT_STDIO /* for sscanf */
#define APR_WANT_STRFUNC
#define APR_WANT_MEMFUNC
#include "apr_want.h"
#define CORE_PRIVATE
#include "util_filter.h"
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_main.h"
#include "http_request.h"
#include "http_vhost.h"
#include "http_log.h" /* For errors detected in basic auth common
* support code... */
#include "util_date.h" /* For parseHTTPdate and BAD_DATE */
#include "util_charset.h"
#include "util_ebcdic.h"
#if APR_HAVE_STDARG_H
#include <stdarg.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h>
#endif
APR_HOOK_STRUCT(
APR_HOOK_LINK(post_read_request)
APR_HOOK_LINK(log_transaction)
APR_HOOK_LINK(http_method)
APR_HOOK_LINK(default_port)
)
/*
* Builds the content-type that should be sent to the client from the
* content-type specified. The following rules are followed:
* - if type is NULL, type is set to ap_default_type(r)
* - if charset adding is disabled, stop processing and return type.
* - then, if there are no parameters on type, add the default charset
* - return type
*/
const char *ap_make_content_type(request_rec *r, const char *type)
{
static const char *needcset[] = {
"text/plain",
"text/html",
NULL };
const char **pcset;
core_dir_config *conf =
(core_dir_config *)ap_get_module_config(r->per_dir_config,
&core_module);
if (!type) {
type = ap_default_type(r);
}
if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) {
return type;
}
if (ap_strcasestr(type, "charset=") != NULL) {
/* already has parameter, do nothing */
/* XXX we don't check the validity */
;
}
else {
/* see if it makes sense to add the charset. At present,
* we only add it if the Content-type is one of needcset[]
*/
for (pcset = needcset; *pcset ; pcset++) {
if (ap_strcasestr(type, *pcset) != NULL) {
type = apr_pstrcat(r->pool, type, "; charset=",
conf->add_default_charset_name, NULL);
break;
}
}
}
return type;
}
static int parse_byterange(char *range, apr_off_t clength,
apr_off_t *start, apr_off_t *end)
{
char *dash = strchr(range, '-');
if (!dash)
return 0;
if ((dash == range)) {
/* In the form "-5" */
*start = clength - atol(dash + 1);
*end = clength - 1;
}
else {
*dash = '\0';
dash++;
*start = atol(range);
if (*dash)
*end = atol(dash);
else /* "5-" */
*end = clength - 1;
}
if (*start < 0)
*start = 0;
if (*end >= clength)
*end = clength - 1;
if (*start > *end)
return -1;
return (*start > 0 || *end < clength);
}
static int ap_set_byterange(request_rec *r);
typedef struct byterange_ctx {
apr_bucket_brigade *bb;
int num_ranges;
const char *orig_ct;
} byterange_ctx;
/*
* Here we try to be compatible with clients that want multipart/x-byteranges
* instead of multipart/byteranges (also see above), as per HTTP/1.1. We
* look for the Request-Range header (e.g. Netscape 2 and 3) as an indication
* that the browser supports an older protocol. We also check User-Agent
* for Microsoft Internet Explorer 3, which needs this as well.
*/
static int use_range_x(request_rec *r)
{
const char *ua;
return (apr_table_get(r->headers_in, "Request-Range") ||
((ua = apr_table_get(r->headers_in, "User-Agent"))
&& ap_strstr_c(ua, "MSIE 3")));
}
#define BYTERANGE_FMT "%" APR_OFF_T_FMT "-%" APR_OFF_T_FMT "/%" APR_OFF_T_FMT
AP_CORE_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(
ap_filter_t *f,
apr_bucket_brigade *bb)
{
#define MIN_LENGTH(len1, len2) ((len1 > len2) ? len2 : len1)
request_rec *r = f->r;
byterange_ctx *ctx = f->ctx;
apr_bucket *e;
apr_bucket_brigade *bsend;
apr_off_t range_start;
apr_off_t range_end;
char *current;
char *bound_head;
apr_ssize_t bb_length;
apr_off_t clength = 0;
apr_status_t rv;
int found = 0;
if (!ctx) {
int num_ranges = ap_set_byterange(r);
if (num_ranges == -1) {
ap_remove_output_filter(f);
bsend = apr_brigade_create(r->pool);
e = ap_bucket_error_create(HTTP_RANGE_NOT_SATISFIABLE, NULL, r->pool);
APR_BRIGADE_INSERT_TAIL(bsend, e);
e = apr_bucket_eos_create();
APR_BRIGADE_INSERT_TAIL(bsend, e);
return ap_pass_brigade(f->next, bsend);
}
if (num_ranges == 0) {
ap_remove_output_filter(f);
return ap_pass_brigade(f->next, bb);
}
ctx = f->ctx = apr_pcalloc(r->pool, sizeof(*ctx));
ctx->num_ranges = num_ranges;
if (num_ranges > 1) {
ctx->orig_ct = r->content_type;
r->content_type =
apr_pstrcat(r->pool, "multipart", use_range_x(r) ? "/x-" : "/",
"byteranges; boundary=", r->boundary, NULL);
}
/* create a brigade in case we never call ap_save_brigade() */
ctx->bb = apr_brigade_create(r->pool);
}
/* We can't actually deal with byte-ranges until we have the whole brigade
* because the byte-ranges can be in any order, and according to the RFC,
* we SHOULD return the data in the same order it was requested.
*/
if (!APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(bb))) {
ap_save_brigade(f, &ctx->bb, &bb);
return APR_SUCCESS;
}
/* compute this once (it is an invariant) */
bound_head = apr_pstrcat(r->pool,
CRLF "--", r->boundary,
CRLF "Content-type: ",
ap_make_content_type(r, ctx->orig_ct),
CRLF "Content-range: bytes ",
NULL);
ap_xlate_proto_to_ascii(bound_head, strlen(bound_head));
/* If we have a saved brigade from a previous run, concat the passed
* brigade with our saved brigade. Otherwise just continue.
*/
if (ctx->bb) {
APR_BRIGADE_CONCAT(ctx->bb, bb);
bb = ctx->bb;
ctx->bb = NULL; /* ### strictly necessary? call brigade_destroy? */
}
/* It is possible that we won't have a content length yet, so we have to
* compute the length before we can actually do the byterange work.
*/
(void) apr_brigade_length(bb, 1, &bb_length);
clength = (apr_off_t)bb_length;
/* this brigade holds what we will be sending */
bsend = apr_brigade_create(r->pool);
while ((current = ap_getword(r->pool, &r->range, ',')) &&
(rv = parse_byterange(current, clength, &range_start, &range_end))) {
apr_bucket *e2;
apr_bucket *ec;
if (rv == -1) {
continue;
}
else {
found = 1;
}
if (ctx->num_ranges > 1) {
char *ts;
e = apr_bucket_pool_create(bound_head,
strlen(bound_head), r->pool);
APR_BRIGADE_INSERT_TAIL(bsend, e);
ts = apr_psprintf(r->pool, BYTERANGE_FMT CRLF CRLF,
range_start, range_end, clength);
ap_xlate_proto_to_ascii(ts, strlen(ts));
e = apr_bucket_pool_create(ts, strlen(ts), r->pool);
APR_BRIGADE_INSERT_TAIL(bsend, e);
}
e = apr_brigade_partition(bb, range_start);
e2 = apr_brigade_partition(bb, range_end + 1);
ec = e;
do {
apr_bucket *foo;
const char *str;
apr_size_t len;
if (apr_bucket_copy(ec, &foo) != APR_SUCCESS) {
apr_bucket_read(ec, &str, &len, APR_BLOCK_READ);
foo = apr_bucket_heap_create(str, len, 0, NULL);
}
APR_BRIGADE_INSERT_TAIL(bsend, foo);
ec = APR_BUCKET_NEXT(ec);
} while (ec != e2);
}
if (found == 0) {
ap_remove_output_filter(f);
r->status = HTTP_OK;
return HTTP_RANGE_NOT_SATISFIABLE;
}
if (ctx->num_ranges > 1) {
char *end;
/* add the final boundary */
end = apr_pstrcat(r->pool, CRLF "--", r->boundary, "--" CRLF, NULL);
ap_xlate_proto_to_ascii(end, strlen(end));
e = apr_bucket_pool_create(end, strlen(end), r->pool);
APR_BRIGADE_INSERT_TAIL(bsend, e);
}
e = apr_bucket_eos_create();
APR_BRIGADE_INSERT_TAIL(bsend, e);
/* we're done with the original content */
apr_brigade_destroy(bb);
/* send our multipart output */
return ap_pass_brigade(f->next, bsend);
}
AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength)
{
r->clength = clength;
apr_table_setn(r->headers_out, "Content-Length",
apr_psprintf(r->pool, "%" APR_OFF_T_FMT, clength));
}
/*
* Return the latest rational time from a request/mtime (modification time)
* pair. We return the mtime unless it's in the future, in which case we
* return the current time. We use the request time as a reference in order
* to limit the number of calls to time(). We don't check for futurosity
* unless the mtime is at least as new as the reference.
*/
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;
}
/*
* Construct an entity tag (ETag) from resource information. If it's a real
* file, build in some of the file characteristics. If the modification time
* is newer than (request-time minus 1 second), mark the ETag as weak - it
* could be modified again in as short an interval. We rationalize the
* modification time we're given to keep it from being in the future.
*/
AP_DECLARE(char *) ap_make_etag(request_rec *r, int force_weak)
{
char *etag;
char *weak;
/*
* Make an ETag header out of various pieces of information. We use
* the last-modified date and, if we have a real file, the
* length and inode number - note that this doesn't have to match
* the content-length (i.e. includes), it just has to be unique
* for the file.
*
* If the request was made within a second of the last-modified date,
* we send a weak tag instead of a strong one, since it could
* be modified again later in the second, and the validation
* would be incorrect.
*/
weak = ((r->request_time - r->mtime > APR_USEC_PER_SEC)
&& !force_weak) ? "" : "W/";
if (r->finfo.filetype != 0) {
etag = apr_psprintf(r->pool,
"%s\"%lx-%lx-%lx\"", weak,
(unsigned long) r->finfo.inode,
(unsigned long) r->finfo.size,
(unsigned long) r->mtime);
}
else {
etag = apr_psprintf(r->pool, "%s\"%lx\"", weak,
(unsigned long) r->mtime);
}
return etag;
}
AP_DECLARE(void) ap_set_etag(request_rec *r)
{
char *etag;
char *variant_etag, *vlv;
int vlv_weak;
if (!r->vlist_validator) {
etag = ap_make_etag(r, 0);
}
else {
/* If we have a variant list validator (vlv) due to the
* response being negotiated, then we create a structured
* entity tag which merges the variant etag with the variant
* list validator (vlv). This merging makes revalidation
* somewhat safer, ensures that caches which can deal with
* Vary will (eventually) be updated if the set of variants is
* changed, and is also a protocol requirement for transparent
* content negotiation.
*/
/* if the variant list validator is weak, we make the whole
* structured etag weak. If we would not, then clients could
* have problems merging range responses if we have different
* variants with the same non-globally-unique strong etag.
*/
vlv = r->vlist_validator;
vlv_weak = (vlv[0] == 'W');
variant_etag = ap_make_etag(r, vlv_weak);
/* merge variant_etag and vlv into a structured etag */
variant_etag[strlen(variant_etag) - 1] = '\0';
if (vlv_weak)
vlv += 3;
else
vlv++;
etag = apr_pstrcat(r->pool, variant_etag, ";", vlv, NULL);
}
apr_table_setn(r->headers_out, "ETag", etag);
}
/* 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 -1 on error, or the length of s.
*
* 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_CORE_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold)
{
char *pos = s;
char *last_char;
char *beyond_buff = s + n;
const char *temp;
int retval;
int total = 0;
int looking_ahead = 0;
apr_size_t length;
conn_rec *c = r->connection;
core_request_config *req_cfg;
apr_bucket_brigade *b;
apr_bucket *e;
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)) {
if (ap_get_brigade(c->input_filters, b, AP_MODE_BLOCKING) != APR_SUCCESS ||
APR_BRIGADE_EMPTY(b)) {
return -1;
}
}
e = APR_BRIGADE_FIRST(b);
if (e->length == 0) {
apr_bucket_delete(e);
continue;
}
retval = apr_bucket_read(e, &temp, &length, APR_BLOCK_READ);
if (retval != APR_SUCCESS) {
total = ((length < 0) && (total == 0)) ? -1 : total;
break;
}
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;
}
last_char = pos + length - 1;
if (last_char < beyond_buff) {
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 -1;
}
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;
}
/* 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 = ap_parse_hostinfo_components(r->pool, uri, &r->parsed_uri);
}
else {
/* Simple syntax Errors in URLs are trapped by parse_uri_components(). */
status = ap_parse_uri_components(r->pool, uri, &r->parsed_uri);
}
if (ap_is_HTTP_SUCCESS(status)) {
/* 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 = status; /* set error status */
r->uri = apr_pstrdup(r->pool, uri);
}
}
static int read_request_line(request_rec *r)
{
char l[DEFAULT_LIMIT_REQUEST_LINE + 2]; /* getline's two extra for \n\0 */
const char *ll = l;
const char *uri;
#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_getline(l, sizeof(l), 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 */
/* XXX - sigwait doesn't work if the signal has been SIG_IGNed (under
* linux 2.0 w/ glibc 2.0, anyway), and this step isn't necessary when
* we're running a sigwait thread anyway. If/when unthreaded mode is
* put back in, we should make sure to ignore this signal iff a sigwait
* thread isn't used. - mvsk
#ifdef SIGWINCH
apr_signal(SIGWINCH, SIG_IGN);
#endif
*/
r->request_time = apr_time_now();
r->the_request = apr_pstrdup(r->pool, l);
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;
}
r->assbackwards = (ll[0] == '\0');
r->protocol = apr_pstrdup(r->pool, ll[0] ? ll : "HTTP/0.9");
/* 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(conn->id, "Protocol", r->protocol);
*/
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[DEFAULT_LIMIT_REQUEST_FIELDSIZE + 2]; /* getline's two extra */
char *value;
char *copy;
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.
*/
while ((len = ap_getline(field, sizeof(field), 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.<P>\n");
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.<P>\n"
"<PRE>\n",
ap_escape_html(r->pool, field),
"</PRE>\n", NULL));
return;
}
copy = apr_palloc(r->pool, len + 1);
memcpy(copy, field, len + 1);
if (!(value = strchr(copy, ':'))) { /* 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.<P>\n"
"<PRE>\n",
ap_escape_html(r->pool, copy),
"</PRE>\n", NULL));
return;
}
*value = '\0';
++value;
while (*value == ' ' || *value == '\t') {
++value; /* Skip to start of value */
}
apr_table_addn(tmp_headers, copy, value);
}
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;
core_request_config *req_cfg;
apr_pool_create(&p, conn->pool);
r = apr_pcalloc(p, sizeof(request_rec));
r->pool = p;
r->connection = conn;
r->server = conn->base_server;
conn->keptalive = conn->keepalive == 1;
conn->keepalive = 0;
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, 50);
r->subprocess_env = apr_table_make(r->pool, 50);
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);
req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config));
req_cfg->bb = apr_brigade_create(r->pool);
ap_set_module_config(r->request_config, &core_module, req_cfg);
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;
r->output_filters = conn->output_filters;
r->input_filters = conn->input_filters;
apr_setsocketopt(conn->client_socket, APR_SO_TIMEOUT,
(int)(conn->keptalive
? r->server->keep_alive_timeout * APR_USEC_PER_SEC
: r->server->timeout * APR_USEC_PER_SEC));
ap_add_output_filter("BYTERANGE", NULL, r, r->connection);
ap_add_output_filter("CONTENT_LENGTH", NULL, r, r->connection);
ap_add_output_filter("HTTP_HEADER", NULL, r, r->connection);
/* 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->connection->keptalive) {
apr_setsocketopt(r->connection->client_socket, APR_SO_TIMEOUT,
(int)(r->server->timeout * APR_USEC_PER_SEC));
}
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;
conn->keptalive = 0; /* We now have a request to play with */
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;
}
}
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)
{
if (!strcasecmp(ap_auth_type(r), "Basic"))
ap_note_basic_auth_failure(r);
else if (!strcasecmp(ap_auth_type(r), "Digest"))
ap_note_digest_auth_failure(r);
}
AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r)
{
if (strcasecmp(ap_auth_type(r), "Basic"))
ap_note_auth_failure(r);
else
apr_table_setn(r->err_headers_out,
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,
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,
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 send_it = 0;
ctx = f->ctx;
if (!ctx) { /* first time through */
f->ctx = ctx = apr_pcalloc(r->pool, sizeof(struct content_length_ctx));
}
APR_BRIGADE_FOREACH(e, b) {
const char *ignored;
apr_size_t length;
if (APR_BUCKET_IS_EOS(e) || APR_BUCKET_IS_FLUSH(e)) {
send_it = 1;
}
if (e->length == -1) { /* if length unknown */
rv = apr_bucket_read(e, &ignored, &length, APR_BLOCK_READ);
if (rv != APR_SUCCESS) {
return rv;
}
}
else {
length = e->length;
}
ctx->curr_len += length;
r->bytes_sent += length;
}
if ((ctx->curr_len < AP_MIN_BYTES_TO_WRITE) && !send_it) {
return ap_save_brigade(f, &ctx->saved, &b);
}
/* We will compute a content length if:
* We already have all the data
* This is a bit confusing, because we will always buffer up
* to AP_MIN_BYTES_TO_WRITE, so if we get all the data while
* we are buffering that much data, we set the c-l.
* or We are in a 1.1 request and we can't chunk
* or This is a keepalive connection
* We may want to change this later to just close the connection
*/
if ((r->proto_num == HTTP_VERSION(1,1)
&& !ap_find_last_token(f->r->pool,
apr_table_get(r->headers_out,
"Transfer-Encoding"),
"chunked"))
|| (f->r->connection->keepalive)
|| (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(b)))) {
ctx->compute_len = 1;
}
else {
ctx->compute_len = 0;
}
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 (!send_it) {
ap_save_brigade(f, &ctx->saved, &b);
return APR_SUCCESS;
}
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);
}
static int ap_set_byterange(request_rec *r)
{
const char *range;
const char *if_range;
const char *match;
const char *ct;
apr_off_t range_start;
apr_off_t range_end;
int num_ranges;
if (r->assbackwards)
return 0;
/* Check for Range request-header (HTTP/1.1) or Request-Range for
* backwards-compatibility with second-draft Luotonen/Franks
* byte-ranges (e.g. Netscape Navigator 2-3).
*
* We support this form, with Request-Range, and (farther down) we
* send multipart/x-byteranges instead of multipart/byteranges for
* Request-Range based requests to work around a bug in Netscape
* Navigator 2-3 and MSIE 3.
*/
if (!(range = apr_table_get(r->headers_in, "Range")))
range = apr_table_get(r->headers_in, "Request-Range");
if (!range || strncasecmp(range, "bytes=", 6)) {
return 0;
}
/* Check the If-Range header for Etag or Date.
* Note that this check will return false (as required) if either
* of the two etags are weak.
*/
if ((if_range = apr_table_get(r->headers_in, "If-Range"))) {
if (if_range[0] == '"') {
if (!(match = apr_table_get(r->headers_out, "Etag")) ||
(strcmp(if_range, match) != 0))
return 0;
}
else if (!(match = apr_table_get(r->headers_out, "Last-Modified")) ||
(strcmp(if_range, match) != 0))
return 0;
}
/* would be nice to pick this up from f->ctx */
ct = ap_make_content_type(r, r->content_type);
if (!ap_strchr_c(range, ',')) {
int rv;
/* A single range */
/* rvarse_byterange() modifies the contents, so make a copy */
if ((rv = parse_byterange(apr_pstrdup(r->pool, range + 6), r->clength,
&range_start, &range_end)) <= 0) {
return rv;
}
apr_table_setn(r->headers_out, "Content-Range",
apr_psprintf(r->pool, "bytes " BYTERANGE_FMT,
range_start, range_end, r->clength));
apr_table_setn(r->headers_out, "Content-Type", ct);
num_ranges = 1;
}
else {
/* a multiple range */
num_ranges = 2;
/* ### it would be nice if r->boundary was in f->ctx */
r->boundary = apr_psprintf(r->pool, "%qx%lx",
r->request_time, (long) getpid());
apr_table_setn(r->headers_out, "Content-Type",
apr_pstrcat(r->pool,
"multipart", use_range_x(r) ? "/x-" : "/",
"byteranges; boundary=", r->boundary,
NULL));
}
r->status = HTTP_PARTIAL_CONTENT;
r->range = range + 6;
return num_ranges;
}
/*
* 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);
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 {
char *buf;
char *cur;
apr_size_t avail;
} 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->buf != NULL) {
apr_size_t nbyte = ctx->cur - ctx->buf;
if (nbyte != 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_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
APR_BRIGADE_INSERT_HEAD(bb, b);
ctx->buf = NULL;
}
}
return ap_pass_brigade(f->next, bb);
}
static apr_status_t flush_buffer(request_rec *r, old_write_filter_ctx *ctx,
const char *extra, apr_size_t extra_len)
{
apr_bucket_brigade *bb = apr_brigade_create(r->pool);
apr_size_t nbyte = ctx->cur - ctx->buf;
apr_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
APR_BRIGADE_INSERT_TAIL(bb, b);
ctx->buf = NULL;
/* if there is extra data, then send that, too */
if (extra != NULL) {
b = apr_bucket_transient_create(extra, extra_len);
APR_BRIGADE_INSERT_TAIL(bb, b);
}
return ap_pass_brigade(r->output_filters, 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;
apr_size_t amt;
apr_status_t status;
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 (strcmp("OLD_WRITE", f->frec->name) == 0)
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);
}
/* if the first filter is not our buffering filter, then we have to
deliver the content through the normal filter chain */
if (strcmp("OLD_WRITE", r->output_filters->frec->name) != 0) {
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 there isn't a buffer in the context yet, put one there. */
if (ctx->buf == NULL) {
/* use the heap so it will get free'd after being flushed */
ctx->avail = AP_MIN_BYTES_TO_WRITE;
ctx->buf = ctx->cur = malloc(ctx->avail);
}
/* squeeze the data into the existing buffer */
if (len <= ctx->avail) {
memcpy(ctx->cur, str, len);
ctx->cur += len;
if ((ctx->avail -= len) == 0)
return flush_buffer(r, ctx, NULL, 0);
return APR_SUCCESS;
}
/* the new content can't fit in the existing buffer */
if (len >= AP_MIN_BYTES_TO_WRITE) {
/* it is really big. send what we have, and the new stuff. */
return flush_buffer(r, ctx, str, len);
}
/* the new data is small. put some into the current buffer, flush it,
and then drop the remaining into a new buffer. */
amt = ctx->avail;
memcpy(ctx->cur, str, amt);
ctx->cur += amt;
ctx->avail = 0;
if ((status = flush_buffer(r, ctx, NULL, 0)) != APR_SUCCESS)
return status;
ctx->buf = malloc(AP_MIN_BYTES_TO_WRITE);
memcpy(ctx->buf, str + amt, len - amt);
ctx->cur = ctx->buf + (len - amt);
ctx->avail = AP_MIN_BYTES_TO_WRITE - (len - amt);
return APR_SUCCESS;
}
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;
}
AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va)
{
char buf[4096];
apr_size_t written;
if (r->connection->aborted)
return -1;
/* ### fix this mechanism to allow more than 4K of output */
written = apr_vsnprintf(buf, sizeof(buf), fmt, va);
if (buffer_output(r, buf, written) != APR_SUCCESS)
return -1;
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;
}
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)