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Merge "app_chanisavail.c: Simplify dialplan using ChanIsAvail."
This commit is contained in:
George Joseph
Gerrit Code Review
@@ -51,16 +51,18 @@ static const char app[] = "ChanIsAvail";
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Check channel availability
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</synopsis>
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<syntax>
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<parameter name="Technology/Resource" required="true" argsep="&">
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<parameter name="Technology/Resource" required="false" argsep="&">
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<argument name="Technology/Resource" required="true">
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<para>Specification of the device(s) to check. These must be in the format of
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<literal>Technology/Resource</literal>, where <replaceable>Technology</replaceable>
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represents a particular channel driver, and <replaceable>Resource</replaceable>
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represents a resource available to that particular channel driver.</para>
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</argument>
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<argument name="Technology2/Resource2" multiple="true">
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<para>Optional extra devices to check</para>
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<para>If you need more than one enter them as
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Technology2/Resource2&Technology3/Resource3&.....</para>
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</argument>
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<para>Specification of the device(s) to check. These must be in the format of
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<literal>Technology/Resource</literal>, where <replaceable>Technology</replaceable>
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represents a particular channel driver, and <replaceable>Resource</replaceable>
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represents a resource available to that particular channel driver.</para>
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</parameter>
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<parameter name="options" required="false">
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<optionlist>
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@@ -99,25 +101,28 @@ static const char app[] = "ChanIsAvail";
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static int chanavail_exec(struct ast_channel *chan, const char *data)
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{
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int inuse=-1, option_state=0, string_compare=0, option_all_avail=0;
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int inuse = -1;
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int option_state = 0;
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int string_compare = 0;
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int option_all_avail = 0;
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int status;
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char *info, tmp[512], trychan[512], *peers, *tech, *number, *rest, *cur;
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char *info;
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char trychan[512];
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char *rest;
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char *tech;
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char *number;
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struct ast_str *tmp_availchan = ast_str_alloca(2048);
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struct ast_str *tmp_availorig = ast_str_alloca(2048);
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struct ast_str *tmp_availstat = ast_str_alloca(2048);
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struct ast_str *tmp_availcause = ast_str_alloca(2048);
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struct ast_channel *tempchan;
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struct ast_custom_function *cdr_prop_func = ast_custom_function_find("CDR_PROP");
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(reqchans);
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AST_APP_ARG(options);
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);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "ChanIsAvail requires an argument (DAHDI/1&DAHDI/2)\n");
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return -1;
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}
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info = ast_strdupa(data);
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info = ast_strdupa(data ?: "");
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AST_STANDARD_APP_ARGS(args, info);
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@@ -132,68 +137,68 @@ static int chanavail_exec(struct ast_channel *chan, const char *data)
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string_compare = 1;
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}
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}
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peers = args.reqchans;
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if (peers) {
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struct ast_custom_function *cdr_prop_func = ast_custom_function_find("CDR_PROP");
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cur = peers;
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do {
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/* remember where to start next time */
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rest = strchr(cur, '&');
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if (rest) {
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*rest = 0;
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rest++;
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rest = args.reqchans;
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if (!rest) {
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rest = "";
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}
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while ((tech = strsep(&rest, "&"))) {
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tech = ast_strip(tech);
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number = strchr(tech, '/');
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if (!number) {
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if (!ast_strlen_zero(tech)) {
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ast_log(LOG_WARNING, "Invalid ChanIsAvail technology/resource argument: '%s'\n",
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tech);
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}
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tech = cur;
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number = strchr(tech, '/');
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if (!number) {
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ast_log(LOG_WARNING, "ChanIsAvail argument takes format ([technology]/[device])\n");
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return -1;
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ast_str_append(&tmp_availstat, 0, "%s%d",
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ast_str_strlen(tmp_availstat) ? "&" : "", AST_DEVICE_INVALID);
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continue;
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}
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*number++ = '\0';
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status = AST_DEVICE_UNKNOWN;
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if (string_compare) {
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/* ast_parse_device_state checks for "SIP/1234" as a channel name.
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ast_device_state will ask the SIP driver for the channel state. */
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snprintf(trychan, sizeof(trychan), "%s/%s", tech, number);
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status = inuse = ast_parse_device_state(trychan);
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} else if (option_state) {
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/* If the pbx says in use then don't bother trying further.
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This is to permit testing if someone's on a call, even if the
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channel can permit more calls (ie callwaiting, sip calls, etc). */
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snprintf(trychan, sizeof(trychan), "%s/%s", tech, number);
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status = inuse = ast_device_state(trychan);
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}
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ast_str_append(&tmp_availstat, 0, "%s%d",
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ast_str_strlen(tmp_availstat) ? "&" : "", status);
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if ((inuse <= (int) AST_DEVICE_NOT_INUSE)
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&& (tempchan = ast_request(tech, ast_channel_nativeformats(chan), NULL, chan, number, &status))) {
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ast_str_append(&tmp_availchan, 0, "%s%s",
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ast_str_strlen(tmp_availchan) ? "&" : "", ast_channel_name(tempchan));
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ast_str_append(&tmp_availorig, 0, "%s%s/%s",
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ast_str_strlen(tmp_availorig) ? "&" : "", tech, number);
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ast_str_append(&tmp_availcause, 0, "%s%d",
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ast_str_strlen(tmp_availcause) ? "&" : "", status);
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/* Disable CDR for this temporary channel. */
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if (cdr_prop_func) {
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ast_func_write(tempchan, "CDR_PROP(disable)", "1");
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}
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*number = '\0';
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number++;
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status = AST_DEVICE_UNKNOWN;
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ast_hangup(tempchan);
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tempchan = NULL;
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if (string_compare) {
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/* ast_parse_device_state checks for "SIP/1234" as a channel name.
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ast_device_state will ask the SIP driver for the channel state. */
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snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
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status = inuse = ast_parse_device_state(trychan);
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} else if (option_state) {
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/* If the pbx says in use then don't bother trying further.
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This is to permit testing if someone's on a call, even if the
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channel can permit more calls (ie callwaiting, sip calls, etc). */
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snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
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status = inuse = ast_device_state(trychan);
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if (!option_all_avail) {
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break;
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}
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snprintf(tmp, sizeof(tmp), "%d", status);
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ast_str_append(&tmp_availstat, 0, "%s%s", ast_str_strlen(tmp_availstat) ? "&" : "", tmp);
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if ((inuse <= 1) && (tempchan = ast_request(tech, ast_channel_nativeformats(chan), NULL, chan, number, &status))) {
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ast_str_append(&tmp_availchan, 0, "%s%s", ast_str_strlen(tmp_availchan) ? "&" : "", ast_channel_name(tempchan));
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snprintf(tmp, sizeof(tmp), "%s/%s", tech, number);
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ast_str_append(&tmp_availorig, 0, "%s%s", ast_str_strlen(tmp_availorig) ? "&" : "", tmp);
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snprintf(tmp, sizeof(tmp), "%d", status);
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ast_str_append(&tmp_availcause, 0, "%s%s", ast_str_strlen(tmp_availcause) ? "&" : "", tmp);
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/* Disable CDR for this temporary channel. */
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if (cdr_prop_func) {
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ast_func_write(tempchan, "CDR_PROP(disable)", "1");
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}
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ast_hangup(tempchan);
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tempchan = NULL;
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if (!option_all_avail) {
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break;
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}
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}
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cur = rest;
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} while (cur);
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}
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}
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pbx_builtin_setvar_helper(chan, "AVAILCHAN", ast_str_buffer(tmp_availchan));
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