2008-04-02 15:25:48 +00:00
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2006, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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2017-12-22 14:23:22 +00:00
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* \file
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2008-04-02 15:25:48 +00:00
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* \brief HTTP POST upload support for Asterisk HTTP server
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*
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* \author Terry Wilson <twilson@digium.com
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*
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* \ref AstHTTP - AMI over the http protocol
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*/
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/*** MODULEINFO
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<depend>gmime</depend>
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2011-07-14 20:28:54 +00:00
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<support_level>core</support_level>
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2008-04-02 15:25:48 +00:00
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***/
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#include "asterisk.h"
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <gmime/gmime.h>
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2011-07-07 19:20:38 +00:00
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#if defined (__OpenBSD__) || defined(__FreeBSD__) || defined(__Darwin__)
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2008-11-05 20:33:11 +00:00
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#include <libgen.h>
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#endif
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2008-04-02 15:25:48 +00:00
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#include "asterisk/linkedlists.h"
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#include "asterisk/http.h"
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#include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
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#include "asterisk/tcptls.h"
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#include "asterisk/manager.h"
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#include "asterisk/cli.h"
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#include "asterisk/module.h"
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#include "asterisk/ast_version.h"
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#define MAX_PREFIX 80
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2011-05-16 14:38:16 +00:00
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/* gmime 2.4 provides a newer interface. */
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#ifdef GMIME_TYPE_CONTENT_TYPE
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#define AST_GMIME_VER_24
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#endif
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2017-12-01 12:07:52 +00:00
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#if defined(GMIME_MAJOR_VERSION) && (GMIME_MAJOR_VERSION >= 3)
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2017-08-03 18:13:01 +00:00
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#define AST_GMIME_VER_30
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#endif
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2011-05-16 14:38:16 +00:00
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2008-04-02 15:25:48 +00:00
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/* just a little structure to hold callback info for gmime */
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struct mime_cbinfo {
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int count;
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const char *post_dir;
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};
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/* all valid URIs must be prepended by the string in prefix. */
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static char prefix[MAX_PREFIX];
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static void post_raw(GMimePart *part, const char *post_dir, const char *fn)
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{
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char filename[PATH_MAX];
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GMimeDataWrapper *content;
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GMimeStream *stream;
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int fd;
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snprintf(filename, sizeof(filename), "%s/%s", post_dir, fn);
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ast_debug(1, "Posting raw data to %s\n", filename);
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2009-01-13 23:05:43 +00:00
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if ((fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0666)) == -1) {
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2008-04-02 15:25:48 +00:00
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ast_log(LOG_WARNING, "Unable to open %s for writing file from a POST!\n", filename);
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return;
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}
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stream = g_mime_stream_fs_new(fd);
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2017-08-03 18:13:01 +00:00
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#ifdef AST_GMIME_VER_30
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content = g_mime_part_get_content(part);
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#else
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2008-04-02 15:25:48 +00:00
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content = g_mime_part_get_content_object(part);
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2017-08-03 18:13:01 +00:00
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#endif
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2008-04-02 15:25:48 +00:00
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g_mime_data_wrapper_write_to_stream(content, stream);
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g_mime_stream_flush(stream);
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2011-05-16 14:38:16 +00:00
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#ifndef AST_GMIME_VER_24
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2008-04-02 15:25:48 +00:00
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g_object_unref(content);
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2011-05-16 14:38:16 +00:00
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#endif
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2008-04-02 15:25:48 +00:00
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g_object_unref(stream);
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}
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static GMimeMessage *parse_message(FILE *f)
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{
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GMimeMessage *message;
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GMimeParser *parser;
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GMimeStream *stream;
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stream = g_mime_stream_file_new(f);
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parser = g_mime_parser_new_with_stream(stream);
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g_mime_parser_set_respect_content_length(parser, 1);
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2017-12-22 14:23:22 +00:00
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2008-04-02 15:25:48 +00:00
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g_object_unref(stream);
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2017-08-03 18:13:01 +00:00
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message = g_mime_parser_construct_message(parser
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#ifdef AST_GMIME_VER_30
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, NULL
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#endif
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);
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2008-04-02 15:25:48 +00:00
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g_object_unref(parser);
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return message;
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}
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2011-05-16 14:38:16 +00:00
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#ifdef AST_GMIME_VER_24
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static void process_message_callback(GMimeObject *parent, GMimeObject *part, gpointer user_data)
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#else
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2008-04-02 15:25:48 +00:00
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static void process_message_callback(GMimeObject *part, gpointer user_data)
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2011-05-16 14:38:16 +00:00
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#endif
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2008-04-02 15:25:48 +00:00
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{
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struct mime_cbinfo *cbinfo = user_data;
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cbinfo->count++;
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/* We strip off the headers before we get here, so should only see GMIME_IS_PART */
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if (GMIME_IS_MESSAGE_PART(part)) {
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ast_log(LOG_WARNING, "Got unexpected GMIME_IS_MESSAGE_PART\n");
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return;
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} else if (GMIME_IS_MESSAGE_PARTIAL(part)) {
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ast_log(LOG_WARNING, "Got unexpected GMIME_IS_MESSAGE_PARTIAL\n");
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return;
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} else if (GMIME_IS_MULTIPART(part)) {
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2011-05-16 14:38:16 +00:00
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#ifndef AST_GMIME_VER_24
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2008-04-02 15:25:48 +00:00
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GList *l;
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2011-02-04 16:55:39 +00:00
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2008-04-02 15:25:48 +00:00
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ast_log(LOG_WARNING, "Got unexpected GMIME_IS_MULTIPART, trying to process subparts\n");
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l = GMIME_MULTIPART(part)->subparts;
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while (l) {
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process_message_callback(l->data, cbinfo);
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l = l->next;
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}
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2011-05-16 14:38:16 +00:00
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#else
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ast_log(LOG_WARNING, "Got unexpected MIME subpart.\n");
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#endif
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2008-04-02 15:25:48 +00:00
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} else if (GMIME_IS_PART(part)) {
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const char *filename;
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if (ast_strlen_zero(filename = g_mime_part_get_filename(GMIME_PART(part)))) {
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ast_debug(1, "Skipping part with no filename\n");
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return;
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}
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post_raw(GMIME_PART(part), cbinfo->post_dir, filename);
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} else {
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ast_log(LOG_ERROR, "Encountered unknown MIME part. This should never happen!\n");
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}
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}
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static int process_message(GMimeMessage *message, const char *post_dir)
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{
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struct mime_cbinfo cbinfo = {
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.count = 0,
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.post_dir = post_dir,
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};
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2011-05-16 14:38:16 +00:00
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#ifdef AST_GMIME_VER_24
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g_mime_message_foreach(message, process_message_callback, &cbinfo);
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#else
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2008-04-02 15:25:48 +00:00
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g_mime_message_foreach_part(message, process_message_callback, &cbinfo);
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2011-05-16 14:38:16 +00:00
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#endif
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2008-04-02 15:25:48 +00:00
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return cbinfo.count;
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}
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2008-10-23 15:09:20 +00:00
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/* Find a sequence of bytes within a binary array. */
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static int find_sequence(char * inbuf, int inlen, char * matchbuf, int matchlen)
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{
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int current;
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int comp;
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int found = 0;
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for (current = 0; current < inlen-matchlen; current++, inbuf++) {
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if (*inbuf == *matchbuf) {
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found=1;
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for (comp = 1; comp < matchlen; comp++) {
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if (inbuf[comp] != matchbuf[comp]) {
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found = 0;
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break;
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}
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}
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if (found) {
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break;
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}
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}
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}
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if (found) {
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return current;
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} else {
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return -1;
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}
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}
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/*
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* The following is a work around to deal with how IE7 embeds the local file name
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* within the Mime header using full WINDOWS file path with backslash directory delimiters.
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* This section of code attempts to isolate the directory path and remove it
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* from what is written into the output file. In addition, it changes
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* esc chars (i.e. backslashes) to forward slashes.
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* This function has two modes. The first to find a boundary marker. The
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* second is to find the filename immediately after the boundary.
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*/
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2016-06-02 19:10:06 +00:00
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static int readmimefile(struct ast_iostream *in, FILE *fout, char *boundary, int contentlen)
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2008-10-23 15:09:20 +00:00
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{
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int find_filename = 0;
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char buf[4096];
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int marker;
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int x;
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int char_in_buf = 0;
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int num_to_read;
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int boundary_len;
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char * path_end, * path_start, * filespec;
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2016-06-02 19:10:06 +00:00
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if (NULL == in || NULL == fout || NULL == boundary || 0 >= contentlen) {
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2008-10-23 15:09:20 +00:00
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return -1;
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}
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boundary_len = strlen(boundary);
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while (0 < contentlen || 0 < char_in_buf) {
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/* determine how much I will read into the buffer */
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if (contentlen > sizeof(buf) - char_in_buf) {
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num_to_read = sizeof(buf)- char_in_buf;
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} else {
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num_to_read = contentlen;
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}
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2008-11-02 18:52:13 +00:00
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if (0 < num_to_read) {
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2016-06-02 19:10:06 +00:00
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if (ast_iostream_read(in, &(buf[char_in_buf]), num_to_read) < num_to_read) {
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ast_log(LOG_WARNING, "read failed: %s\n", strerror(errno));
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2008-11-02 18:52:13 +00:00
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num_to_read = 0;
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}
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2008-10-23 15:09:20 +00:00
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contentlen -= num_to_read;
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char_in_buf += num_to_read;
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}
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/* If I am looking for the filename spec */
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if (find_filename) {
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path_end = filespec = NULL;
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x = strlen("filename=\"");
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marker = find_sequence(buf, char_in_buf, "filename=\"", x );
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if (0 <= marker) {
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marker += x; /* Index beyond the filename marker */
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path_start = &buf[marker];
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for (path_end = path_start, x = 0; x < char_in_buf-marker; x++, path_end++) {
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if ('\\' == *path_end) { /* convert backslashses to forward slashes */
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*path_end = '/';
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}
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if ('\"' == *path_end) { /* If at the end of the file name spec */
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*path_end = '\0'; /* temporarily null terminate the file spec for basename */
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filespec = basename(path_start);
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*path_end = '\"';
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break;
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}
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}
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}
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if (filespec) { /* If the file name path was found in the header */
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2008-11-02 18:52:13 +00:00
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if (fwrite(buf, 1, marker, fout) != marker) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
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2008-10-23 15:09:20 +00:00
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x = (int)(path_end+1 - filespec);
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2008-11-02 18:52:13 +00:00
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if (fwrite(filespec, 1, x, fout) != x) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
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2008-10-23 15:09:20 +00:00
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x = (int)(path_end+1 - buf);
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memmove(buf, &(buf[x]), char_in_buf-x);
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char_in_buf -= x;
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}
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find_filename = 0;
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} else { /* I am looking for the boundary marker */
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marker = find_sequence(buf, char_in_buf, boundary, boundary_len);
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if (0 > marker) {
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if (char_in_buf < (boundary_len)) {
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/*no possibility to find the boundary, write all you have */
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2008-11-02 18:52:13 +00:00
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if (fwrite(buf, 1, char_in_buf, fout) != char_in_buf) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
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2008-10-23 15:09:20 +00:00
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char_in_buf = 0;
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} else {
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/* write all except for area where the boundary marker could be */
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2008-11-02 18:52:13 +00:00
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if (fwrite(buf, 1, char_in_buf -(boundary_len -1), fout) != char_in_buf - (boundary_len - 1)) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
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2008-10-23 15:09:20 +00:00
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x = char_in_buf -(boundary_len -1);
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memmove(buf, &(buf[x]), char_in_buf-x);
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char_in_buf = (boundary_len -1);
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}
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} else {
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/* write up through the boundary, then look for filename in the rest */
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2008-11-02 18:52:13 +00:00
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if (fwrite(buf, 1, marker + boundary_len, fout) != marker + boundary_len) {
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ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
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}
|
2008-10-23 15:09:20 +00:00
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x = marker + boundary_len;
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memmove(buf, &(buf[x]), char_in_buf-x);
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char_in_buf -= marker + boundary_len;
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find_filename =1;
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}
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}
|
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}
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return 0;
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|
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}
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|
2009-04-23 20:36:35 +00:00
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static int http_post_callback(struct ast_tcptls_session_instance *ser, const struct ast_http_uri *urih, const char *uri, enum ast_http_method method, struct ast_variable *get_vars, struct ast_variable *headers)
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2008-04-02 15:25:48 +00:00
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{
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2014-07-03 17:16:55 +00:00
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struct ast_variable *var;
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uint32_t ident;
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2008-04-02 15:25:48 +00:00
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FILE *f;
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int content_len = 0;
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struct ast_str *post_dir;
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GMimeMessage *message;
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2014-07-03 17:16:55 +00:00
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char *boundary_marker = NULL;
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2008-04-02 15:25:48 +00:00
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2009-04-23 20:36:35 +00:00
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if (method != AST_HTTP_POST) {
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ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
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2014-07-03 17:16:55 +00:00
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return 0;
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2009-04-23 20:36:35 +00:00
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}
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2008-04-02 15:25:48 +00:00
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2009-04-23 20:36:35 +00:00
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if (!urih) {
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ast_http_error(ser, 400, "Missing URI handle", "There was an error parsing the request");
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2014-07-03 17:16:55 +00:00
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return 0;
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2009-04-23 20:36:35 +00:00
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}
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2008-04-02 15:25:48 +00:00
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2014-07-03 17:16:55 +00:00
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ident = ast_http_manid_from_vars(headers);
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if (!ident || !astman_is_authed(ident)) {
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ast_http_request_close_on_completion(ser);
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ast_http_error(ser, 403, "Access Denied", "Sorry, I cannot let you do that, Dave.");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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2009-04-23 20:36:35 +00:00
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if (!astman_verify_session_writepermissions(ident, EVENT_FLAG_CONFIG)) {
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2014-07-03 17:16:55 +00:00
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ast_http_request_close_on_completion(ser);
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2009-04-23 20:36:35 +00:00
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ast_http_error(ser, 401, "Unauthorized", "You are not authorized to make this request.");
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2014-07-03 17:16:55 +00:00
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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if (!(f = tmpfile())) {
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ast_log(LOG_ERROR, "Could not create temp file.\n");
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2009-04-23 20:36:35 +00:00
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ast_http_error(ser, 500, "Internal server error", "Could not create temp file.");
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2014-07-03 17:16:55 +00:00
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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for (var = headers; var; var = var->next) {
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2008-08-01 21:56:07 +00:00
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fprintf(f, "%s: %s\r\n", var->name, var->value);
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2008-04-02 15:25:48 +00:00
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if (!strcasecmp(var->name, "Content-Length")) {
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2009-08-10 19:20:57 +00:00
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if ((sscanf(var->value, "%30u", &content_len)) != 1) {
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2008-04-02 15:25:48 +00:00
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ast_log(LOG_ERROR, "Invalid Content-Length in POST request!\n");
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fclose(f);
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2014-07-03 17:16:55 +00:00
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ast_http_request_close_on_completion(ser);
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ast_http_error(ser, 400, "Bad Request", "Invalid Content-Length in POST request!");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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ast_debug(1, "Got a Content-Length of %d\n", content_len);
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2008-10-23 15:09:20 +00:00
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} else if (!strcasecmp(var->name, "Content-Type")) {
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boundary_marker = strstr(var->value, "boundary=");
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if (boundary_marker) {
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boundary_marker += strlen("boundary=");
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}
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2008-04-02 15:25:48 +00:00
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}
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}
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2008-08-01 21:56:07 +00:00
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fprintf(f, "\r\n");
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2014-07-03 17:16:55 +00:00
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/*
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* Always mark the body read as failed.
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*
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* XXX Should change readmimefile() to always be sure to read
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* the entire body so we can update the read status and
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* potentially keep the connection open.
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*/
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ast_http_body_read_status(ser, 0);
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2016-06-02 19:10:06 +00:00
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if (0 > readmimefile(ser->stream, f, boundary_marker, content_len)) {
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2011-02-04 16:55:39 +00:00
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ast_debug(1, "Cannot find boundary marker in POST request.\n");
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2008-10-23 15:09:20 +00:00
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fclose(f);
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2014-07-03 17:16:55 +00:00
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ast_http_error(ser, 400, "Bad Request", "Cannot find boundary marker in POST request.");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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if (fseek(f, SEEK_SET, 0)) {
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ast_log(LOG_ERROR, "Failed to seek temp file back to beginning.\n");
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fclose(f);
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2009-04-23 20:36:35 +00:00
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ast_http_error(ser, 500, "Internal server error", "Failed to seek temp file back to beginning.");
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2014-07-03 17:16:55 +00:00
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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post_dir = urih->data;
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message = parse_message(f); /* Takes ownership and will close f */
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if (!message) {
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ast_log(LOG_ERROR, "Error parsing MIME data\n");
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2014-07-03 17:16:55 +00:00
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ast_http_error(ser, 400, "Bad Request", "There was an error parsing the request.");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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2012-04-17 18:57:40 +00:00
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if (!process_message(message, ast_str_buffer(post_dir))) {
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2008-04-02 15:25:48 +00:00
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ast_log(LOG_ERROR, "Invalid MIME data, found no parts!\n");
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2008-04-18 16:05:29 +00:00
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g_object_unref(message);
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2014-07-03 17:16:55 +00:00
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ast_http_error(ser, 400, "Bad Request", "There was an error parsing the request.");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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2008-04-18 16:05:29 +00:00
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g_object_unref(message);
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2014-07-03 17:16:55 +00:00
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/* XXX Passing 200 to the error response routine? */
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2009-04-23 20:36:35 +00:00
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ast_http_error(ser, 200, "OK", "File successfully uploaded.");
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return 0;
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2008-04-02 15:25:48 +00:00
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}
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static int __ast_http_post_load(int reload)
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{
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struct ast_config *cfg;
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struct ast_variable *v;
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struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
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2008-09-12 23:30:03 +00:00
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cfg = ast_config_load2("http.conf", "http", config_flags);
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2014-07-03 17:16:55 +00:00
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if (!cfg || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
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2008-04-02 15:25:48 +00:00
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return 0;
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}
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if (reload) {
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ast_http_uri_unlink_all_with_key(__FILE__);
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}
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2014-07-03 17:16:55 +00:00
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for (v = ast_variable_browse(cfg, "general"); v; v = v->next) {
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if (!strcasecmp(v->name, "prefix")) {
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ast_copy_string(prefix, v->value, sizeof(prefix));
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if (prefix[strlen(prefix)] == '/') {
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prefix[strlen(prefix)] = '\0';
|
2008-04-02 15:25:48 +00:00
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}
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}
|
2014-07-03 17:16:55 +00:00
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}
|
2008-04-02 15:25:48 +00:00
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2014-07-03 17:16:55 +00:00
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for (v = ast_variable_browse(cfg, "post_mappings"); v; v = v->next) {
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struct ast_http_uri *urih;
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struct ast_str *ds;
|
2008-04-02 15:25:48 +00:00
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|
2014-07-03 17:16:55 +00:00
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if (!(urih = ast_calloc(sizeof(*urih), 1))) {
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ast_config_destroy(cfg);
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return -1;
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}
|
2008-04-02 15:25:48 +00:00
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2014-07-03 17:16:55 +00:00
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if (!(ds = ast_str_create(32))) {
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ast_free(urih);
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ast_config_destroy(cfg);
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return -1;
|
2008-04-02 15:25:48 +00:00
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}
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|
2014-07-03 17:16:55 +00:00
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urih->description = ast_strdup("HTTP POST mapping");
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urih->uri = ast_strdup(v->name);
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ast_str_set(&ds, 0, "%s", v->value);
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urih->data = ds;
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urih->has_subtree = 0;
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urih->callback = http_post_callback;
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urih->key = __FILE__;
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urih->mallocd = urih->dmallocd = 1;
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ast_http_uri_link(urih);
|
2008-04-02 15:25:48 +00:00
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}
|
2014-07-03 17:16:55 +00:00
|
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ast_config_destroy(cfg);
|
2008-04-02 15:25:48 +00:00
|
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|
return 0;
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|
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}
|
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|
static int unload_module(void)
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|
{
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ast_http_uri_unlink_all_with_key(__FILE__);
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|
return 0;
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|
}
|
|
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|
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static int reload(void)
|
|
|
|
{
|
|
|
|
__ast_http_post_load(1);
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|
return AST_MODULE_LOAD_SUCCESS;
|
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|
}
|
|
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|
|
static int load_module(void)
|
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|
{
|
2017-08-03 18:13:01 +00:00
|
|
|
g_mime_init(
|
|
|
|
#ifndef AST_GMIME_VER_30
|
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0
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|
#endif
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);
|
2008-04-02 15:25:48 +00:00
|
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|
__ast_http_post_load(0);
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|
return AST_MODULE_LOAD_SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "HTTP POST support",
|
2014-07-25 16:47:17 +00:00
|
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|
.support_level = AST_MODULE_SUPPORT_CORE,
|
2008-04-02 15:25:48 +00:00
|
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|
.load = load_module,
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|
.unload = unload_module,
|
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|
|
.reload = reload,
|
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|
);
|