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004885c2fa
deleting it optional, defaulting to the old behavior, where it is always deleted (issue #6750, jcollie) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@28832 65c4cc65-6c06-0410-ace0-fbb531ad65f3
468 lines
13 KiB
C
468 lines
13 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, 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 Full-featured outgoing call spool support
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*
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*/
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#include <sys/stat.h>
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#include <errno.h>
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#include <time.h>
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#include <utime.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <string.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/lock.h"
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#include "asterisk/file.h"
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#include "asterisk/logger.h"
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#include "asterisk/channel.h"
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#include "asterisk/callerid.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/options.h"
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#include "asterisk/utils.h"
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/*
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* pbx_spool is similar in spirit to qcall, but with substantially enhanced functionality...
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* The spool file contains a header
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*/
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enum {
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/*! Always delete the call file after a call succeeds or the
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* maximum number of retries is exceeded, even if the
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* modification time of the call file is in the future.
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*/
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SPOOL_FLAG_ALWAYS_DELETE = (1 << 0)
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};
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static char qdir[255];
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struct outgoing {
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char fn[256];
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/* Current number of retries */
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int retries;
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/* Maximum number of retries permitted */
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int maxretries;
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/* How long to wait between retries (in seconds) */
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int retrytime;
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/* How long to wait for an answer */
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int waittime;
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/* PID which is currently calling */
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long callingpid;
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/* What to connect to outgoing */
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char tech[256];
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char dest[256];
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/* If application */
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char app[256];
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char data[256];
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/* If extension/context/priority */
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char exten[256];
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char context[256];
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int priority;
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/* CallerID Information */
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char cid_num[256];
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char cid_name[256];
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/* account code */
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char account[AST_MAX_ACCOUNT_CODE];
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/* Variables and Functions */
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struct ast_variable *vars;
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/* Maximum length of call */
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int maxlen;
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/* options */
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struct ast_flags options;
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};
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static void init_outgoing(struct outgoing *o)
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{
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memset(o, 0, sizeof(struct outgoing));
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o->priority = 1;
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o->retrytime = 300;
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o->waittime = 45;
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ast_set_flag(&o->options, SPOOL_FLAG_ALWAYS_DELETE);
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}
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static void free_outgoing(struct outgoing *o)
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{
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free(o);
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}
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static int apply_outgoing(struct outgoing *o, char *fn, FILE *f)
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{
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char buf[256];
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char *c, *c2;
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int lineno = 0;
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struct ast_variable *var;
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while(fgets(buf, sizeof(buf), f)) {
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lineno++;
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/* Trim comments */
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c = buf;
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while ((c = strchr(c, '#'))) {
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if ((c == buf) || (*(c-1) == ' ') || (*(c-1) == '\t'))
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*c = '\0';
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else
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c++;
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}
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c = buf;
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while ((c = strchr(c, ';'))) {
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if ((c > buf) && (c[-1] == '\\')) {
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memmove(c - 1, c, strlen(c) + 1);
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c++;
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} else {
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*c = '\0';
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break;
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}
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}
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/* Trim trailing white space */
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while(!ast_strlen_zero(buf) && buf[strlen(buf) - 1] < 33)
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buf[strlen(buf) - 1] = '\0';
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if (!ast_strlen_zero(buf)) {
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c = strchr(buf, ':');
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if (c) {
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*c = '\0';
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c++;
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while ((*c) && (*c < 33))
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c++;
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#if 0
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printf("'%s' is '%s' at line %d\n", buf, c, lineno);
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#endif
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if (!strcasecmp(buf, "channel")) {
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strncpy(o->tech, c, sizeof(o->tech) - 1);
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if ((c2 = strchr(o->tech, '/'))) {
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*c2 = '\0';
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c2++;
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strncpy(o->dest, c2, sizeof(o->dest) - 1);
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} else {
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ast_log(LOG_NOTICE, "Channel should be in form Tech/Dest at line %d of %s\n", lineno, fn);
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o->tech[0] = '\0';
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}
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} else if (!strcasecmp(buf, "callerid")) {
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ast_callerid_split(c, o->cid_name, sizeof(o->cid_name), o->cid_num, sizeof(o->cid_num));
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} else if (!strcasecmp(buf, "application")) {
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strncpy(o->app, c, sizeof(o->app) - 1);
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} else if (!strcasecmp(buf, "data")) {
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strncpy(o->data, c, sizeof(o->data) - 1);
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} else if (!strcasecmp(buf, "maxretries")) {
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if (sscanf(c, "%d", &o->maxretries) != 1) {
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ast_log(LOG_WARNING, "Invalid max retries at line %d of %s\n", lineno, fn);
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o->maxretries = 0;
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}
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} else if (!strcasecmp(buf, "context")) {
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strncpy(o->context, c, sizeof(o->context) - 1);
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} else if (!strcasecmp(buf, "extension")) {
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strncpy(o->exten, c, sizeof(o->exten) - 1);
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} else if (!strcasecmp(buf, "priority")) {
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if ((sscanf(c, "%d", &o->priority) != 1) || (o->priority < 1)) {
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ast_log(LOG_WARNING, "Invalid priority at line %d of %s\n", lineno, fn);
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o->priority = 1;
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}
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} else if (!strcasecmp(buf, "retrytime")) {
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if ((sscanf(c, "%d", &o->retrytime) != 1) || (o->retrytime < 1)) {
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ast_log(LOG_WARNING, "Invalid retrytime at line %d of %s\n", lineno, fn);
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o->retrytime = 300;
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}
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} else if (!strcasecmp(buf, "waittime")) {
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if ((sscanf(c, "%d", &o->waittime) != 1) || (o->waittime < 1)) {
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ast_log(LOG_WARNING, "Invalid retrytime at line %d of %s\n", lineno, fn);
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o->waittime = 45;
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}
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} else if (!strcasecmp(buf, "retry")) {
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o->retries++;
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} else if (!strcasecmp(buf, "startretry")) {
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if (sscanf(c, "%ld", &o->callingpid) != 1) {
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ast_log(LOG_WARNING, "Unable to retrieve calling PID!\n");
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o->callingpid = 0;
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}
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} else if (!strcasecmp(buf, "endretry") || !strcasecmp(buf, "abortretry")) {
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o->callingpid = 0;
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o->retries++;
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} else if (!strcasecmp(buf, "delayedretry")) {
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} else if (!strcasecmp(buf, "setvar") || !strcasecmp(buf, "set")) {
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c2 = c;
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strsep(&c2, "=");
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if (c2) {
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var = ast_variable_new(c, c2);
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if (var) {
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var->next = o->vars;
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o->vars = var;
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}
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} else
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ast_log(LOG_WARNING, "Malformed \"%s\" argument. Should be \"%s: variable=value\"\n", buf, buf);
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} else if (!strcasecmp(buf, "account")) {
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ast_copy_string(o->account, c, sizeof(o->account));
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} else if (!strcasecmp(buf, "alwaysdelete")) {
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ast_set2_flag(&o->options, ast_true(c), SPOOL_FLAG_ALWAYS_DELETE);
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} else {
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ast_log(LOG_WARNING, "Unknown keyword '%s' at line %d of %s\n", buf, lineno, fn);
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}
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} else
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ast_log(LOG_NOTICE, "Syntax error at line %d of %s\n", lineno, fn);
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}
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}
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strncpy(o->fn, fn, sizeof(o->fn) - 1);
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if (ast_strlen_zero(o->tech) || ast_strlen_zero(o->dest) || (ast_strlen_zero(o->app) && ast_strlen_zero(o->exten))) {
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ast_log(LOG_WARNING, "At least one of app or extension must be specified, along with tech and dest in file %s\n", fn);
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return -1;
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}
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return 0;
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}
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static void safe_append(struct outgoing *o, time_t now, char *s)
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{
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int fd;
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FILE *f;
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struct utimbuf tbuf;
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fd = open(o->fn, O_WRONLY|O_APPEND);
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if (fd > -1) {
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f = fdopen(fd, "a");
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if (f) {
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fprintf(f, "%s: %ld %d (%ld)\n", s, (long)ast_mainpid, o->retries, (long) now);
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fclose(f);
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} else
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close(fd);
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/* Update the file time */
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tbuf.actime = now;
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tbuf.modtime = now + o->retrytime;
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if (utime(o->fn, &tbuf))
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ast_log(LOG_WARNING, "Unable to set utime on %s: %s\n", o->fn, strerror(errno));
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}
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}
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static void check_unlink(struct outgoing *o)
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{
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if (ast_test_flag(&o->options, SPOOL_FLAG_ALWAYS_DELETE))
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unlink(o->fn);
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else {
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struct stat current_file_status;
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if (!stat(o->fn, ¤t_file_status))
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if (time(NULL) >= current_file_status.st_mtime)
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unlink(o->fn);
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}
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}
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static void *attempt_thread(void *data)
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{
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struct outgoing *o = data;
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int res, reason;
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if (!ast_strlen_zero(o->app)) {
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_3 "Attempting call on %s/%s for application %s(%s) (Retry %d)\n", o->tech, o->dest, o->app, o->data, o->retries);
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res = ast_pbx_outgoing_app(o->tech, AST_FORMAT_SLINEAR, o->dest, o->waittime * 1000, o->app, o->data, &reason, 2 /* wait to finish */, o->cid_num, o->cid_name, o->vars, o->account, NULL);
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} else {
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_3 "Attempting call on %s/%s for %s@%s:%d (Retry %d)\n", o->tech, o->dest, o->exten, o->context,o->priority, o->retries);
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res = ast_pbx_outgoing_exten(o->tech, AST_FORMAT_SLINEAR, o->dest, o->waittime * 1000, o->context, o->exten, o->priority, &reason, 2 /* wait to finish */, o->cid_num, o->cid_name, o->vars, o->account, NULL);
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}
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if (res) {
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ast_log(LOG_NOTICE, "Call failed to go through, reason %d\n", reason);
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if (o->retries >= o->maxretries + 1) {
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/* Max retries exceeded */
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ast_log(LOG_EVENT, "Queued call to %s/%s expired without completion after %d attempt%s\n", o->tech, o->dest, o->retries - 1, ((o->retries - 1) != 1) ? "s" : "");
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check_unlink(o);
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} else {
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/* Notate that the call is still active */
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safe_append(o, time(NULL), "EndRetry");
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}
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} else {
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ast_log(LOG_NOTICE, "Call completed to %s/%s\n", o->tech, o->dest);
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ast_log(LOG_EVENT, "Queued call to %s/%s completed\n", o->tech, o->dest);
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check_unlink(o);
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}
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free_outgoing(o);
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return NULL;
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}
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static void launch_service(struct outgoing *o)
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{
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pthread_t t;
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pthread_attr_t attr;
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int ret;
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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if ((ret = ast_pthread_create(&t,&attr,attempt_thread, o)) != 0) {
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ast_log(LOG_WARNING, "Unable to create thread :( (returned error: %d)\n", ret);
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free_outgoing(o);
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}
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}
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static int scan_service(char *fn, time_t now, time_t atime)
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{
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struct outgoing *o;
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FILE *f;
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o = malloc(sizeof(struct outgoing));
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if (o) {
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init_outgoing(o);
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f = fopen(fn, "r+");
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if (f) {
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if (!apply_outgoing(o, fn, f)) {
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#if 0
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printf("Filename: %s, Retries: %d, max: %d\n", fn, o->retries, o->maxretries);
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#endif
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fclose(f);
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if (o->retries <= o->maxretries) {
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now += o->retrytime;
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if (o->callingpid && (o->callingpid == ast_mainpid)) {
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safe_append(o, time(NULL), "DelayedRetry");
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free_outgoing(o);
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ast_log(LOG_DEBUG, "Delaying retry since we're currently running '%s'\n", o->fn);
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} else {
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/* Increment retries */
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o->retries++;
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/* If someone else was calling, they're presumably gone now
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so abort their retry and continue as we were... */
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if (o->callingpid)
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safe_append(o, time(NULL), "AbortRetry");
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safe_append(o, now, "StartRetry");
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launch_service(o);
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}
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return now;
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} else {
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ast_log(LOG_EVENT, "Queued call to %s/%s expired without completion after %d attempt%s\n", o->tech, o->dest, o->retries - 1, ((o->retries - 1) != 1) ? "s" : "");
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free_outgoing(o);
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unlink(fn);
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return 0;
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}
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} else {
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free_outgoing(o);
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ast_log(LOG_WARNING, "Invalid file contents in %s, deleting\n", fn);
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fclose(f);
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unlink(fn);
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}
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} else {
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free_outgoing(o);
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ast_log(LOG_WARNING, "Unable to open %s: %s, deleting\n", fn, strerror(errno));
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unlink(fn);
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}
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} else
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ast_log(LOG_WARNING, "Out of memory :(\n");
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return -1;
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}
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static void *scan_thread(void *unused)
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{
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struct stat st;
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DIR *dir;
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struct dirent *de;
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char fn[256];
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int res;
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time_t last = 0, next = 0, now;
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for(;;) {
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/* Wait a sec */
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sleep(1);
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time(&now);
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if (!stat(qdir, &st)) {
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if ((st.st_mtime != last) || (next && (now > next))) {
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#if 0
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printf("atime: %ld, mtime: %ld, ctime: %ld\n", st.st_atime, st.st_mtime, st.st_ctime);
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printf("Ooh, something changed / timeout\n");
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#endif
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next = 0;
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last = st.st_mtime;
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dir = opendir(qdir);
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if (dir) {
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while((de = readdir(dir))) {
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snprintf(fn, sizeof(fn), "%s/%s", qdir, de->d_name);
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if (!stat(fn, &st)) {
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if (S_ISREG(st.st_mode)) {
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if (st.st_mtime <= now) {
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res = scan_service(fn, now, st.st_atime);
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if (res > 0) {
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/* Update next service time */
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if (!next || (res < next)) {
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next = res;
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}
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} else if (res)
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ast_log(LOG_WARNING, "Failed to scan service '%s'\n", fn);
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} else {
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/* Update "next" update if necessary */
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if (!next || (st.st_mtime < next))
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next = st.st_mtime;
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}
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}
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} else
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ast_log(LOG_WARNING, "Unable to stat %s: %s\n", fn, strerror(errno));
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}
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closedir(dir);
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} else
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ast_log(LOG_WARNING, "Unable to open directory %s: %s\n", qdir, strerror(errno));
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}
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} else
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ast_log(LOG_WARNING, "Unable to stat %s\n", qdir);
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}
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return NULL;
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}
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static int unload_module(void *mod)
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{
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return -1;
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}
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static int load_module(void *mod)
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{
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pthread_t thread;
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pthread_attr_t attr;
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int ret;
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snprintf(qdir, sizeof(qdir), "%s/%s", ast_config_AST_SPOOL_DIR, "outgoing");
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if (mkdir(qdir, 0700) && (errno != EEXIST)) {
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ast_log(LOG_WARNING, "Unable to create queue directory %s -- outgoing spool disabled\n", qdir);
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return 0;
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}
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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if ((ret = ast_pthread_create(&thread,&attr,scan_thread, NULL)) != 0) {
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ast_log(LOG_WARNING, "Unable to create thread :( (returned error: %d)\n", ret);
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return -1;
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}
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return 0;
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}
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static const char *description(void)
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{
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return "Outgoing Spool Support";
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}
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static const char *key(void)
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{
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return ASTERISK_GPL_KEY;
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}
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STD_MOD(MOD_1 | NO_USECOUNT | NO_UNLOAD, NULL, NULL, NULL);
|