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apache/server/util_script.c
Ruediger Pluem 48cf630810 * Use apr_size_t instead of int to harden against overflows. 
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1903680 13f79535-47bb-0310-9956-ffa450edef68
2022-08-25 15:57:59 +00:00

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/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "apr.h"
#include "apr_lib.h"
#include "apr_strings.h"
#define APR_WANT_STRFUNC
#include "apr_want.h"
#if APR_HAVE_STDLIB_H
#include <stdlib.h>
#endif
#include "ap_config.h"
#include "httpd.h"
#include "http_config.h"
#include "http_main.h"
#include "http_log.h"
#include "http_core.h"
#include "http_protocol.h"
#include "http_request.h" /* for sub_req_lookup_uri() */
#include "util_script.h"
#include "apr_date.h" /* For apr_date_parse_http() */
#include "util_ebcdic.h"
#ifdef OS2
#define INCL_DOS
#include <os2.h>
#endif
/*
* Various utility functions which are common to a whole lot of
* script-type extensions mechanisms, and might as well be gathered
* in one place (if only to avoid creating inter-module dependencies
* where there don't have to be).
*/
/* we know core's module_index is 0 */
#undef APLOG_MODULE_INDEX
#define APLOG_MODULE_INDEX AP_CORE_MODULE_INDEX
static char *http2env(request_rec *r, const char *w)
{
char *res = (char *)apr_palloc(r->pool, sizeof("HTTP_") + strlen(w));
char *cp = res;
char c;
*cp++ = 'H';
*cp++ = 'T';
*cp++ = 'T';
*cp++ = 'P';
*cp++ = '_';
while ((c = *w++) != 0) {
if (apr_isalnum(c)) {
*cp++ = apr_toupper(c);
}
else if (c == '-') {
*cp++ = '_';
}
else {
if (APLOGrtrace1(r))
ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r,
"Not exporting header with invalid name as envvar: %s",
ap_escape_logitem(r->pool, w));
return NULL;
}
}
*cp = 0;
return res;
}
static void add_unless_null(apr_table_t *table, const char *name, const char *val)
{
if (name && val) {
apr_table_addn(table, name, val);
}
}
/* Sets variable @name in table @dest from r->subprocess_env if
* available, else from the environment, else from @fallback if
* non-NULL. */
static void env2env(apr_table_t *dest, request_rec *r,
const char *name, const char *fallback)
{
const char *val;
val = apr_table_get(r->subprocess_env, name);
if (!val)
val = apr_pstrdup(r->pool, getenv(name));
if (!val)
val = apr_pstrdup(r->pool, fallback);
if (val)
apr_table_addn(dest, name, val);
}
AP_DECLARE(char **) ap_create_environment(apr_pool_t *p, apr_table_t *t)
{
const apr_array_header_t *env_arr = apr_table_elts(t);
const apr_table_entry_t *elts = (const apr_table_entry_t *) env_arr->elts;
char **env = (char **) apr_palloc(p, (env_arr->nelts + 2) * sizeof(char *));
int i, j;
char *tz;
char *whack;
j = 0;
if (!apr_table_get(t, "TZ")) {
tz = getenv("TZ");
if (tz != NULL) {
env[j++] = apr_pstrcat(p, "TZ=", tz, NULL);
}
}
for (i = 0; i < env_arr->nelts; ++i) {
if (!elts[i].key) {
continue;
}
env[j] = apr_pstrcat(p, elts[i].key, "=", elts[i].val, NULL);
whack = env[j];
if (apr_isdigit(*whack)) {
*whack++ = '_';
}
while (*whack != '=') {
#ifdef WIN32
if (!apr_isalnum(*whack) && *whack != '(' && *whack != ')') {
#else
if (!apr_isalnum(*whack)) {
#endif
*whack = '_';
}
++whack;
}
++j;
}
env[j] = NULL;
return env;
}
AP_DECLARE(void) ap_add_common_vars(request_rec *r)
{
apr_table_t *e;
server_rec *s = r->server;
conn_rec *c = r->connection;
core_dir_config *conf =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
const char *env_temp;
const apr_array_header_t *hdrs_arr = apr_table_elts(r->headers_in);
const apr_table_entry_t *hdrs = (const apr_table_entry_t *) hdrs_arr->elts;
int i;
apr_port_t rport;
char *q;
/* use a temporary apr_table_t which we'll overlap onto
* r->subprocess_env later
* (exception: if r->subprocess_env is empty at the start,
* write directly into it)
*/
if (apr_is_empty_table(r->subprocess_env)) {
e = r->subprocess_env;
}
else {
e = apr_table_make(r->pool, 25 + hdrs_arr->nelts);
}
/* First, add environment vars from headers... this is as per
* CGI specs, though other sorts of scripting interfaces see
* the same vars...
*/
for (i = 0; i < hdrs_arr->nelts; ++i) {
if (!hdrs[i].key) {
continue;
}
/* A few headers are special cased --- Authorization to prevent
* rogue scripts from capturing passwords; content-type and -length
* for no particular reason.
*/
if (!ap_cstr_casecmp(hdrs[i].key, "Content-type")) {
apr_table_addn(e, "CONTENT_TYPE", hdrs[i].val);
}
else if (!ap_cstr_casecmp(hdrs[i].key, "Content-length")) {
apr_table_addn(e, "CONTENT_LENGTH", hdrs[i].val);
}
/* HTTP_PROXY collides with a popular envvar used to configure
* proxies, don't let clients set/override it. But, if you must...
*/
#ifndef SECURITY_HOLE_PASS_PROXY
else if (!ap_cstr_casecmp(hdrs[i].key, "Proxy")) {
;
}
#endif
/*
* You really don't want to disable this check, since it leaves you
* wide open to CGIs stealing passwords and people viewing them
* in the environment with "ps -e". But, if you must...
*/
#ifndef SECURITY_HOLE_PASS_AUTHORIZATION
else if (!ap_cstr_casecmp(hdrs[i].key, "Authorization")
|| !ap_cstr_casecmp(hdrs[i].key, "Proxy-Authorization")) {
if (conf->cgi_pass_auth == AP_CGI_PASS_AUTH_ON) {
add_unless_null(e, http2env(r, hdrs[i].key), hdrs[i].val);
}
}
#endif
else
add_unless_null(e, http2env(r, hdrs[i].key), hdrs[i].val);
}
env2env(e, r, "PATH", DEFAULT_PATH);
#if defined(WIN32)
env2env(e, r, "SystemRoot", NULL);
env2env(e, r, "COMSPEC", NULL);
env2env(e, r, "PATHEXT", NULL);
env2env(e, r, "WINDIR", NULL);
#elif defined(OS2)
env2env(e, r, "COMSPEC", NULL);
env2env(e, r, "ETC", NULL);
env2env(e, r, "DPATH", NULL);
env2env(e, r, "PERLLIB_PREFIX", NULL);
#elif defined(BEOS)
env2env(e, r, "LIBRARY_PATH", NULL);
#elif defined(DARWIN)
env2env(e, r, "DYLD_LIBRARY_PATH", NULL);
#elif defined(_AIX)
env2env(e, r, "LIBPATH", NULL);
#elif defined(__HPUX__)
/* HPUX PARISC 2.0W knows both, otherwise redundancy is harmless */
env2env(e, r, "SHLIB_PATH", NULL);
env2env(e, r, "LD_LIBRARY_PATH", NULL);
#else /* Some Unix */
env2env(e, r, "LD_LIBRARY_PATH", NULL);
#endif
apr_table_addn(e, "SERVER_SIGNATURE", ap_psignature("", r));
apr_table_addn(e, "SERVER_SOFTWARE", ap_get_server_banner());
apr_table_addn(e, "SERVER_NAME",
ap_escape_html(r->pool, ap_get_server_name_for_url(r)));
apr_table_addn(e, "SERVER_ADDR", r->connection->local_ip); /* Apache */
apr_table_addn(e, "SERVER_PORT",
apr_psprintf(r->pool, "%u", ap_get_server_port(r)));
add_unless_null(e, "REMOTE_HOST",
ap_get_useragent_host(r, REMOTE_HOST, NULL));
apr_table_addn(e, "REMOTE_ADDR", r->useragent_ip);
apr_table_addn(e, "DOCUMENT_ROOT", ap_document_root(r)); /* Apache */
apr_table_setn(e, "REQUEST_SCHEME", ap_http_scheme(r));
apr_table_addn(e, "CONTEXT_PREFIX", ap_context_prefix(r));
apr_table_addn(e, "CONTEXT_DOCUMENT_ROOT", ap_context_document_root(r));
apr_table_addn(e, "SERVER_ADMIN", s->server_admin); /* Apache */
if (apr_table_get(r->notes, "proxy-noquery") && (q = ap_strchr(r->filename, '?'))) {
char *script_filename = apr_pstrmemdup(r->pool, r->filename, q - r->filename);
apr_table_addn(e, "SCRIPT_FILENAME", script_filename);
}
else {
apr_table_addn(e, "SCRIPT_FILENAME", r->filename); /* Apache */
}
rport = c->client_addr->port;
apr_table_addn(e, "REMOTE_PORT", apr_itoa(r->pool, rport));
if (r->user) {
apr_table_addn(e, "REMOTE_USER", r->user);
}
else if (r->prev) {
request_rec *back = r->prev;
while (back) {
if (back->user) {
apr_table_addn(e, "REDIRECT_REMOTE_USER", back->user);
break;
}
back = back->prev;
}
}
add_unless_null(e, "AUTH_TYPE", r->ap_auth_type);
env_temp = ap_get_remote_logname(r);
if (env_temp) {
apr_table_addn(e, "REMOTE_IDENT", apr_pstrdup(r->pool, env_temp));
}
/* Apache custom error responses. If we have redirected set two new vars */
if (r->prev) {
if (conf->qualify_redirect_url != AP_CORE_CONFIG_ON) {
add_unless_null(e, "REDIRECT_URL", r->prev->uri);
}
else {
/* PR#57785: reconstruct full URL here */
apr_uri_t *uri = &r->prev->parsed_uri;
if (!uri->scheme) {
uri->scheme = (char*)ap_http_scheme(r->prev);
}
if (!uri->port) {
uri->port = ap_get_server_port(r->prev);
uri->port_str = apr_psprintf(r->pool, "%u", uri->port);
}
if (!uri->hostname) {
uri->hostname = (char*)ap_get_server_name_for_url(r->prev);
}
add_unless_null(e, "REDIRECT_URL",
apr_uri_unparse(r->pool, uri, 0));
}
add_unless_null(e, "REDIRECT_QUERY_STRING", r->prev->args);
}
if (e != r->subprocess_env) {
apr_table_overlap(r->subprocess_env, e, APR_OVERLAP_TABLES_SET);
}
}
/* This "cute" little function comes about because the path info on
* filenames and URLs aren't always the same. So we take the two,
* and find as much of the two that match as possible.
*/
AP_DECLARE(int) ap_find_path_info(const char *uri, const char *path_info)
{
int lu = strlen(uri);
int lp = strlen(path_info);
while (lu-- && lp-- && uri[lu] == path_info[lp]) {
if (path_info[lp] == '/') {
while (lu && uri[lu-1] == '/') lu--;
}
}
if (lu == -1) {
lu = 0;
}
while (uri[lu] != '\0' && uri[lu] != '/') {
lu++;
}
return lu;
}
/* Obtain the Request-URI from the original request-line, returning
* a new string from the request pool containing the URI or "".
*/
static char *original_uri(request_rec *r)
{
char *first, *last;
if (r->the_request == NULL) {
return (char *) apr_pcalloc(r->pool, 1);
}
first = r->the_request; /* use the request-line */
while (*first && !apr_isspace(*first)) {
++first; /* skip over the method */
}
while (apr_isspace(*first)) {
++first; /* and the space(s) */
}
last = first;
while (*last && !apr_isspace(*last)) {
++last; /* end at next whitespace */
}
return apr_pstrmemdup(r->pool, first, last - first);
}
AP_DECLARE(void) ap_add_cgi_vars(request_rec *r)
{
apr_table_t *e = r->subprocess_env;
core_dir_config *conf =
(core_dir_config *)ap_get_core_module_config(r->per_dir_config);
int request_uri_from_original = 1;
const char *request_uri_rule;
apr_table_setn(e, "GATEWAY_INTERFACE", "CGI/1.1");
apr_table_setn(e, "SERVER_PROTOCOL", r->protocol);
apr_table_setn(e, "REQUEST_METHOD", r->method);
apr_table_setn(e, "QUERY_STRING", r->args ? r->args : "");
if (conf->cgi_var_rules) {
request_uri_rule = apr_hash_get(conf->cgi_var_rules, "REQUEST_URI",
APR_HASH_KEY_STRING);
if (request_uri_rule && !strcmp(request_uri_rule, "current-uri")) {
request_uri_from_original = 0;
}
}
apr_table_setn(e, "REQUEST_URI",
request_uri_from_original ? original_uri(r) : r->uri);
/* Note that the code below special-cases scripts run from includes,
* because it "knows" that the sub_request has been hacked to have the
* args and path_info of the original request, and not any that may have
* come with the script URI in the include command. Ugh.
*/
if (!strcmp(r->protocol, "INCLUDED")) {
apr_table_setn(e, "SCRIPT_NAME", r->uri);
if (r->path_info && *r->path_info) {
apr_table_setn(e, "PATH_INFO", r->path_info);
}
}
else if (!r->path_info || !*r->path_info) {
apr_table_setn(e, "SCRIPT_NAME", r->uri);
}
else {
int path_info_start = ap_find_path_info(r->uri, r->path_info);
apr_table_setn(e, "SCRIPT_NAME",
apr_pstrndup(r->pool, r->uri, path_info_start));
apr_table_setn(e, "PATH_INFO", r->path_info);
}
if (r->path_info && r->path_info[0]) {
/*
* To get PATH_TRANSLATED, treat PATH_INFO as a URI path.
* Need to re-escape it for this, since the entire URI was
* un-escaped before we determined where the PATH_INFO began.
*/
request_rec *pa_req;
pa_req = ap_sub_req_lookup_uri(ap_escape_uri(r->pool, r->path_info), r,
NULL);
if (pa_req->filename) {
char *pt = apr_pstrcat(r->pool, pa_req->filename, pa_req->path_info,
NULL);
#ifdef WIN32
/* We need to make this a real Windows path name */
apr_filepath_merge(&pt, "", pt, APR_FILEPATH_NATIVE, r->pool);
#endif
apr_table_setn(e, "PATH_TRANSLATED", pt);
}
ap_destroy_sub_req(pa_req);
}
}
static int set_cookie_doo_doo(void *v, const char *key, const char *val)
{
apr_table_addn(v, key, val);
return 1;
}
#define HTTP_UNSET (-HTTP_OK)
#define SCRIPT_LOG_MARK __FILE__,__LINE__,module_index
AP_DECLARE(int) ap_scan_script_header_err_core_ex(request_rec *r, char *buffer,
int (*getsfunc) (char *, int, void *),
void *getsfunc_data,
int module_index)
{
char x[MAX_STRING_LEN];
char *w, *l;
apr_size_t p;
int cgi_status = HTTP_UNSET;
apr_table_t *merge;
apr_table_t *cookie_table;
int trace_log = APLOG_R_MODULE_IS_LEVEL(r, module_index, APLOG_TRACE1);
int first_header = 1;
if (buffer) {
*buffer = '\0';
}
w = buffer ? buffer : x;
/* temporary place to hold headers to merge in later */
merge = apr_table_make(r->pool, 10);
/* The HTTP specification says that it is legal to merge duplicate
* headers into one. Some browsers that support Cookies don't like
* merged headers and prefer that each Set-Cookie header is sent
* separately. Lets humour those browsers by not merging.
* Oh what a pain it is.
*/
cookie_table = apr_table_make(r->pool, 2);
apr_table_do(set_cookie_doo_doo, cookie_table, r->err_headers_out, "Set-Cookie", NULL);
while (1) {
int rv = (*getsfunc) (w, MAX_STRING_LEN - 1, getsfunc_data);
if (rv == 0) {
const char *msg = "Premature end of script headers";
if (first_header)
msg = "End of script output before headers";
/* Intentional no APLOGNO */
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
"%s: %s", msg,
apr_filepath_name_get(r->filename));
return HTTP_INTERNAL_SERVER_ERROR;
}
else if (rv == -1) {
/* Intentional no APLOGNO */
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
"Script timed out before returning headers: %s",
apr_filepath_name_get(r->filename));
return HTTP_GATEWAY_TIME_OUT;
}
/* Delete terminal (CR?)LF */
p = strlen(w);
/* Indeed, the host's '\n':
'\012' for UNIX; '\015' for MacOS; '\025' for OS/390
-- whatever the script generates.
*/
if (p > 0 && w[p - 1] == '\n') {
if (p > 1 && w[p - 2] == CR) {
w[p - 2] = '\0';
}
else {
w[p - 1] = '\0';
}
}
/*
* If we've finished reading the headers, check to make sure any
* HTTP/1.1 conditions are met. If so, we're done; normal processing
* will handle the script's output. If not, just return the error.
* The appropriate thing to do would be to send the script process a
* SIGPIPE to let it know we're ignoring it, close the channel to the
* script process, and *then* return the failed-to-meet-condition
* error. Otherwise we'd be waiting for the script to finish
* blithering before telling the client the output was no good.
* However, we don't have the information to do that, so we have to
* leave it to an upper layer.
*/
if (w[0] == '\0') {
int cond_status = OK;
/* PR#38070: This fails because it gets confused when a
* CGI Status header overrides ap_meets_conditions.
*
* We can fix that by dropping ap_meets_conditions when
* Status has been set. Since this is the only place
* cgi_status gets used, let's test it explicitly.
*
* The alternative would be to ignore CGI Status when
* ap_meets_conditions returns anything interesting.
* That would be safer wrt HTTP, but would break CGI.
*/
if ((cgi_status == HTTP_UNSET) && (r->method_number == M_GET)) {
cond_status = ap_meets_conditions(r);
}
apr_table_overlap(r->err_headers_out, merge,
APR_OVERLAP_TABLES_MERGE);
if (!apr_is_empty_table(cookie_table)) {
/* the cookies have already been copied to the cookie_table */
apr_table_unset(r->err_headers_out, "Set-Cookie");
r->err_headers_out = apr_table_overlay(r->pool,
r->err_headers_out, cookie_table);
}
return cond_status;
}
if (trace_log) {
if (first_header)
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE4, 0, r,
"Headers from script '%s':",
apr_filepath_name_get(r->filename));
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE4, 0, r, " %s", w);
}
/* if we see a bogus header don't ignore it. Shout and scream */
#if APR_CHARSET_EBCDIC
/* Chances are that we received an ASCII header text instead of
* the expected EBCDIC header lines. Try to auto-detect:
*/
if (!(l = strchr(w, ':'))) {
int maybeASCII = 0, maybeEBCDIC = 0;
unsigned char *cp, native;
apr_size_t inbytes_left, outbytes_left;
for (cp = w; *cp != '\0'; ++cp) {
native = apr_xlate_conv_byte(ap_hdrs_from_ascii, *cp);
if (apr_isprint(*cp) && !apr_isprint(native))
++maybeEBCDIC;
if (!apr_isprint(*cp) && apr_isprint(native))
++maybeASCII;
}
if (maybeASCII > maybeEBCDIC) {
ap_log_error(SCRIPT_LOG_MARK, APLOG_ERR, 0, r->server,
APLOGNO(02660) "CGI Interface Error: "
"Script headers apparently ASCII: (CGI = %s)",
r->filename);
inbytes_left = outbytes_left = cp - w;
apr_xlate_conv_buffer(ap_hdrs_from_ascii,
w, &inbytes_left, w, &outbytes_left);
}
}
#endif /*APR_CHARSET_EBCDIC*/
if (!(l = strchr(w, ':'))) {
if (!buffer) {
/* Soak up all the script output - may save an outright kill */
while ((*getsfunc)(w, MAX_STRING_LEN - 1, getsfunc_data) > 0) {
continue;
}
}
/* Intentional no APLOGNO */
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
"malformed header from script '%s': Bad header: %.30s",
apr_filepath_name_get(r->filename), w);
return HTTP_INTERNAL_SERVER_ERROR;
}
*l++ = '\0';
while (apr_isspace(*l)) {
++l;
}
if (!ap_cstr_casecmp(w, "Content-type")) {
char *tmp;
/* Nuke trailing whitespace */
char *endp = l + strlen(l) - 1;
while (endp > l && apr_isspace(*endp)) {
*endp-- = '\0';
}
tmp = apr_pstrdup(r->pool, l);
ap_content_type_tolower(tmp);
ap_set_content_type(r, tmp);
}
/*
* If the script returned a specific status, that's what
* we'll use - otherwise we assume 200 OK.
*/
else if (!ap_cstr_casecmp(w, "Status")) {
r->status = cgi_status = atoi(l);
if (!ap_is_HTTP_VALID_RESPONSE(cgi_status))
/* Intentional no APLOGNO */
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_ERR|APLOG_TOCLIENT, 0, r,
"Invalid status line from script '%s': %.30s",
apr_filepath_name_get(r->filename), l);
else
if (APLOGrtrace1(r))
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE1, 0, r,
"Status line from script '%s': %.30s",
apr_filepath_name_get(r->filename), l);
r->status_line = apr_pstrdup(r->pool, l);
}
else if (!ap_cstr_casecmp(w, "Location")) {
apr_table_set(r->headers_out, w, l);
}
else if (!ap_cstr_casecmp(w, "Content-Length")) {
apr_table_set(r->headers_out, w, l);
}
else if (!ap_cstr_casecmp(w, "Content-Range")) {
apr_table_set(r->headers_out, w, l);
}
else if (!ap_cstr_casecmp(w, "Transfer-Encoding")) {
apr_table_set(r->headers_out, w, l);
}
else if (!ap_cstr_casecmp(w, "ETag")) {
apr_table_set(r->headers_out, w, l);
}
/*
* If the script gave us a Last-Modified header, we can't just
* pass it on blindly because of restrictions on future or invalid values.
*/
else if (!ap_cstr_casecmp(w, "Last-Modified")) {
apr_time_t parsed_date = apr_date_parse_http(l);
if (parsed_date != APR_DATE_BAD) {
ap_update_mtime(r, parsed_date);
ap_set_last_modified(r);
if (APLOGrtrace1(r)) {
apr_time_t last_modified_date = apr_date_parse_http(apr_table_get(r->headers_out,
"Last-Modified"));
/*
* A Last-Modified header value coming from a (F)CGI source
* is considered HTTP input so we assume the GMT timezone.
* The following logs should inform the admin about violations
* and related actions taken by httpd.
* The apr_date_parse_rfc function is 'timezone aware'
* and it will be used to generate a more informative set of logs
* (we don't use it as a replacement of apr_date_parse_http
* for the aforementioned reason).
*/
apr_time_t parsed_date_tz_aware = apr_date_parse_rfc(l);
/*
* The parsed Last-Modified header datestring has been replaced by httpd.
*/
if (parsed_date > last_modified_date) {
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE1, 0, r,
"The Last-Modified header value %s (%s) "
"has been replaced with '%s'", l,
parsed_date != parsed_date_tz_aware ? "not in GMT"
: "in the future",
apr_table_get(r->headers_out, "Last-Modified"));
/*
* Last-Modified header datestring not in GMT and not considered in the future
* by httpd (like now() + 1 hour in the PST timezone). No action is taken but
* the admin is warned about the violation.
*/
} else if (parsed_date != parsed_date_tz_aware) {
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_TRACE1, 0, r,
"The Last-Modified header value is not set "
"within the GMT timezone (as required)");
}
}
}
else {
ap_log_rerror(SCRIPT_LOG_MARK, APLOG_INFO, 0, r, APLOGNO(10247)
"Ignored invalid header value: Last-Modified: '%s'", l);
}
}
else if (!ap_cstr_casecmp(w, "Set-Cookie")) {
apr_table_add(cookie_table, w, l);
}
else {
apr_table_add(merge, w, l);
}
first_header = 0;
}
/* never reached - we leave this function within the while loop above */
return OK;
}
AP_DECLARE(int) ap_scan_script_header_err_core(request_rec *r, char *buffer,
int (*getsfunc) (char *, int, void *),
void *getsfunc_data)
{
return ap_scan_script_header_err_core_ex(r, buffer, getsfunc,
getsfunc_data,
APLOG_MODULE_INDEX);
}
static int getsfunc_FILE(char *buf, int len, void *f)
{
return apr_file_gets(buf, len, (apr_file_t *) f) == APR_SUCCESS;
}
AP_DECLARE(int) ap_scan_script_header_err(request_rec *r, apr_file_t *f,
char *buffer)
{
return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_FILE, f,
APLOG_MODULE_INDEX);
}
AP_DECLARE(int) ap_scan_script_header_err_ex(request_rec *r, apr_file_t *f,
char *buffer, int module_index)
{
return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_FILE, f,
module_index);
}
static int getsfunc_BRIGADE(char *buf, int len, void *arg)
{
apr_bucket_brigade *bb = (apr_bucket_brigade *)arg;
const char *dst_end = buf + len - 1; /* leave room for terminating null */
char *dst = buf;
apr_bucket *e = APR_BRIGADE_FIRST(bb);
apr_status_t rv;
int done = 0;
while ((dst < dst_end) && !done && e != APR_BRIGADE_SENTINEL(bb)
&& !APR_BUCKET_IS_EOS(e)) {
const char *bucket_data;
apr_size_t bucket_data_len;
const char *src;
const char *src_end;
apr_bucket * next;
rv = apr_bucket_read(e, &bucket_data, &bucket_data_len,
APR_BLOCK_READ);
if (rv != APR_SUCCESS || (bucket_data_len == 0)) {
*dst = '\0';
return APR_STATUS_IS_TIMEUP(rv) ? -1 : 0;
}
src = bucket_data;
src_end = bucket_data + bucket_data_len;
while ((src < src_end) && (dst < dst_end) && !done) {
if (*src == '\n') {
done = 1;
}
else if (*src != '\r') {
*dst++ = *src;
}
src++;
}
if (src < src_end) {
apr_bucket_split(e, src - bucket_data);
}
next = APR_BUCKET_NEXT(e);
apr_bucket_delete(e);
e = next;
}
*dst = 0;
return done;
}
AP_DECLARE(int) ap_scan_script_header_err_brigade(request_rec *r,
apr_bucket_brigade *bb,
char *buffer)
{
return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_BRIGADE, bb,
APLOG_MODULE_INDEX);
}
AP_DECLARE(int) ap_scan_script_header_err_brigade_ex(request_rec *r,
apr_bucket_brigade *bb,
char *buffer,
int module_index)
{
return ap_scan_script_header_err_core_ex(r, buffer, getsfunc_BRIGADE, bb,
module_index);
}
struct vastrs {
va_list args;
int arg;
const char *curpos;
};
static int getsfunc_STRING(char *w, int len, void *pvastrs)
{
struct vastrs *strs = (struct vastrs*) pvastrs;
const char *p;
apr_size_t t;
if (!strs->curpos || !*strs->curpos) {
w[0] = '\0';
return 0;
}
p = ap_strchr_c(strs->curpos, '\n');
if (p)
++p;
else
p = ap_strchr_c(strs->curpos, '\0');
t = p - strs->curpos;
if (t > len)
t = len;
strncpy (w, strs->curpos, t);
w[t] = '\0';
if (!strs->curpos[t]) {
++strs->arg;
strs->curpos = va_arg(strs->args, const char *);
}
else
strs->curpos += t;
return t;
}
/* ap_scan_script_header_err_strs() accepts additional const char* args...
* each is treated as one or more header lines, and the first non-header
* character is returned to **arg, **data. (The first optional arg is
* counted as 0.)
*/
AP_DECLARE_NONSTD(int) ap_scan_script_header_err_strs_ex(request_rec *r,
char *buffer,
int module_index,
const char **termch,
int *termarg, ...)
{
struct vastrs strs;
int res;
va_start(strs.args, termarg);
strs.arg = 0;
strs.curpos = va_arg(strs.args, char*);
res = ap_scan_script_header_err_core_ex(r, buffer, getsfunc_STRING,
(void *) &strs, module_index);
if (termch)
*termch = strs.curpos;
if (termarg)
*termarg = strs.arg;
va_end(strs.args);
return res;
}
AP_DECLARE_NONSTD(int) ap_scan_script_header_err_strs(request_rec *r,
char *buffer,
const char **termch,
int *termarg, ...)
{
struct vastrs strs;
int res;
va_start(strs.args, termarg);
strs.arg = 0;
strs.curpos = va_arg(strs.args, char*);
res = ap_scan_script_header_err_core_ex(r, buffer, getsfunc_STRING,
(void *) &strs, APLOG_MODULE_INDEX);
if (termch)
*termch = strs.curpos;
if (termarg)
*termarg = strs.arg;
va_end(strs.args);
return res;
}
static void
argstr_to_table(char *str, apr_table_t *parms)
{
char *key;
char *value;
char *strtok_state;
if (str == NULL) {
return;
}
key = apr_strtok(str, "&", &strtok_state);
while (key) {
value = strchr(key, '=');
if (value) {
*value = '\0'; /* Split the string in two */
value++; /* Skip passed the = */
}
else {
value = "1";
}
ap_unescape_url(key);
ap_unescape_url(value);
apr_table_set(parms, key, value);
key = apr_strtok(NULL, "&", &strtok_state);
}
}
AP_DECLARE(void) ap_args_to_table(request_rec *r, apr_table_t **table)
{
apr_table_t *t = apr_table_make(r->pool, 10);
argstr_to_table(apr_pstrdup(r->pool, r->args), t);
*table = t;
}
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