who really need it. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89466 65c4cc65-6c06-0410-ace0-fbb531ad65f3
210 lines
5.2 KiB
C
210 lines
5.2 KiB
C
/*
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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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/*! \file
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*
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* \brief Image Management
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*
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* \author Mark Spencer <markster@digium.com>
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <sys/time.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
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#include "asterisk/sched.h"
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#include "asterisk/options.h"
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#include "asterisk/channel.h"
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#include "asterisk/file.h"
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#include "asterisk/image.h"
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#include "asterisk/translate.h"
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#include "asterisk/cli.h"
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#include "asterisk/lock.h"
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/* XXX Why don't we just use the formats struct for this? */
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static AST_RWLIST_HEAD_STATIC(imagers, ast_imager);
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int ast_image_register(struct ast_imager *img)
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{
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AST_RWLIST_WRLOCK(&imagers);
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AST_RWLIST_INSERT_HEAD(&imagers, img, list);
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AST_RWLIST_UNLOCK(&imagers);
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ast_verb(2, "Registered format '%s' (%s)\n", img->name, img->desc);
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return 0;
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}
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void ast_image_unregister(struct ast_imager *img)
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{
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AST_RWLIST_WRLOCK(&imagers);
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img = AST_RWLIST_REMOVE(&imagers, img, list);
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AST_RWLIST_UNLOCK(&imagers);
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if (img)
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ast_verb(2, "Unregistered format '%s' (%s)\n", img->name, img->desc);
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}
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int ast_supports_images(struct ast_channel *chan)
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{
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if (!chan || !chan->tech)
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return 0;
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if (!chan->tech->send_image)
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return 0;
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return 1;
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}
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static int file_exists(char *filename)
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{
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int res;
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struct stat st;
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res = stat(filename, &st);
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if (!res)
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return st.st_size;
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return 0;
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}
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static void make_filename(char *buf, int len, char *filename, const char *preflang, char *ext)
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{
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if (filename[0] == '/') {
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if (!ast_strlen_zero(preflang))
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snprintf(buf, len, "%s-%s.%s", filename, preflang, ext);
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else
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snprintf(buf, len, "%s.%s", filename, ext);
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} else {
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if (!ast_strlen_zero(preflang))
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snprintf(buf, len, "%s/%s/%s-%s.%s", ast_config_AST_DATA_DIR, "images", filename, preflang, ext);
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else
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snprintf(buf, len, "%s/%s/%s.%s", ast_config_AST_DATA_DIR, "images", filename, ext);
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}
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}
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struct ast_frame *ast_read_image(char *filename, const char *preflang, int format)
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{
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struct ast_imager *i;
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char buf[256];
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char tmp[80];
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char *e;
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struct ast_imager *found = NULL;
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int fd;
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int len=0;
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struct ast_frame *f = NULL;
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AST_RWLIST_RDLOCK(&imagers);
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AST_RWLIST_TRAVERSE(&imagers, i, list) {
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if (i->format & format) {
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char *stringp=NULL;
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ast_copy_string(tmp, i->exts, sizeof(tmp));
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stringp=tmp;
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e = strsep(&stringp, "|");
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while (e) {
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make_filename(buf, sizeof(buf), filename, preflang, e);
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if ((len = file_exists(buf))) {
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found = i;
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break;
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}
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make_filename(buf, sizeof(buf), filename, NULL, e);
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if ((len = file_exists(buf))) {
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found = i;
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break;
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}
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e = strsep(&stringp, "|");
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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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if (found) {
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fd = open(buf, O_RDONLY);
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if (fd > -1) {
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if (!found->identify || found->identify(fd)) {
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/* Reset file pointer */
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lseek(fd, 0, SEEK_SET);
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f = found->read_image(fd,len);
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} else
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ast_log(LOG_WARNING, "%s does not appear to be a %s file\n", buf, found->name);
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close(fd);
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} else
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ast_log(LOG_WARNING, "Unable to open '%s': %s\n", buf, strerror(errno));
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} else
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ast_log(LOG_WARNING, "Image file '%s' not found\n", filename);
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AST_RWLIST_UNLOCK(&imagers);
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return f;
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}
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int ast_send_image(struct ast_channel *chan, char *filename)
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{
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struct ast_frame *f;
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int res = -1;
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if (chan->tech->send_image) {
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f = ast_read_image(filename, chan->language, -1);
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if (f) {
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res = chan->tech->send_image(chan, f);
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ast_frfree(f);
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}
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}
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return res;
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}
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static char *handle_core_show_image_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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#define FORMAT "%10s %10s %50s %10s\n"
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#define FORMAT2 "%10s %10s %50s %10s\n"
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struct ast_imager *i;
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int count_fmt = 0;
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switch (cmd) {
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case CLI_INIT:
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e->command = "core show image formats";
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e->usage =
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"Usage: core show image formats\n"
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" Displays currently registered image formats (if any).\n";
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return NULL;
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case CLI_GENERATE:
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return NULL;
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}
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if (a->argc != 4)
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return CLI_SHOWUSAGE;
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ast_cli(a->fd, FORMAT, "Name", "Extensions", "Description", "Format");
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ast_cli(a->fd, FORMAT, "----", "----------", "-----------", "------");
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AST_RWLIST_RDLOCK(&imagers);
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AST_RWLIST_TRAVERSE(&imagers, i, list) {
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ast_cli(a->fd, FORMAT2, i->name, i->exts, i->desc, ast_getformatname(i->format));
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count_fmt++;
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}
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AST_RWLIST_UNLOCK(&imagers);
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ast_cli(a->fd, "\n%d image format%s registered.\n", count_fmt, count_fmt == 1 ? "" : "s");
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return CLI_SUCCESS;
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}
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struct ast_cli_entry cli_image[] = {
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AST_CLI_DEFINE(handle_core_show_image_formats, "Displays image formats")
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};
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int ast_image_init(void)
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{
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ast_cli_register_multiple(cli_image, ARRAY_LEN(cli_image));
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return 0;
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}
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