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00034 #include "asterisk.h"
00035
00036 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 359486 $")
00037
00038 #include <sys/ioctl.h>
00039
00040 #include "asterisk/lock.h"
00041 #include "asterisk/file.h"
00042 #include "asterisk/channel.h"
00043 #include "asterisk/pbx.h"
00044 #include "asterisk/module.h"
00045 #include "asterisk/app.h"
00046 #include "asterisk/devicestate.h"
00047
00048 static const char app[] = "ChanIsAvail";
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00101
00102 static int chanavail_exec(struct ast_channel *chan, const char *data)
00103 {
00104 int inuse=-1, option_state=0, string_compare=0, option_all_avail=0;
00105 int status;
00106 char *info, tmp[512], trychan[512], *peers, *tech, *number, *rest, *cur;
00107 struct ast_str *tmp_availchan = ast_str_alloca(2048);
00108 struct ast_str *tmp_availorig = ast_str_alloca(2048);
00109 struct ast_str *tmp_availstat = ast_str_alloca(2048);
00110 struct ast_str *tmp_availcause = ast_str_alloca(2048);
00111 struct ast_channel *tempchan;
00112 AST_DECLARE_APP_ARGS(args,
00113 AST_APP_ARG(reqchans);
00114 AST_APP_ARG(options);
00115 );
00116
00117 if (ast_strlen_zero(data)) {
00118 ast_log(LOG_WARNING, "ChanIsAvail requires an argument (DAHDI/1&DAHDI/2)\n");
00119 return -1;
00120 }
00121
00122 info = ast_strdupa(data);
00123
00124 AST_STANDARD_APP_ARGS(args, info);
00125
00126 if (args.options) {
00127 if (strchr(args.options, 'a')) {
00128 option_all_avail = 1;
00129 }
00130 if (strchr(args.options, 's')) {
00131 option_state = 1;
00132 }
00133 if (strchr(args.options, 't')) {
00134 string_compare = 1;
00135 }
00136 }
00137 peers = args.reqchans;
00138 if (peers) {
00139 cur = peers;
00140 do {
00141
00142 rest = strchr(cur, '&');
00143 if (rest) {
00144 *rest = 0;
00145 rest++;
00146 }
00147 tech = cur;
00148 number = strchr(tech, '/');
00149 if (!number) {
00150 ast_log(LOG_WARNING, "ChanIsAvail argument takes format ([technology]/[device])\n");
00151 return -1;
00152 }
00153 *number = '\0';
00154 number++;
00155
00156 status = AST_DEVICE_UNKNOWN;
00157
00158 if (string_compare) {
00159
00160
00161
00162 snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
00163 status = inuse = ast_parse_device_state(trychan);
00164 } else if (option_state) {
00165
00166
00167
00168
00169 snprintf(trychan, sizeof(trychan), "%s/%s",cur,number);
00170 status = inuse = ast_device_state(trychan);
00171 }
00172 snprintf(tmp, sizeof(tmp), "%d", status);
00173 ast_str_append(&tmp_availstat, 0, "%s%s", ast_str_strlen(tmp_availstat) ? "&" : "", tmp);
00174 if ((inuse <= 1) && (tempchan = ast_request(tech, chan->nativeformats, chan, number, &status))) {
00175 ast_str_append(&tmp_availchan, 0, "%s%s", ast_str_strlen(tmp_availchan) ? "&" : "", tempchan->name);
00176
00177 snprintf(tmp, sizeof(tmp), "%s/%s", tech, number);
00178 ast_str_append(&tmp_availorig, 0, "%s%s", ast_str_strlen(tmp_availorig) ? "&" : "", tmp);
00179
00180 snprintf(tmp, sizeof(tmp), "%d", status);
00181 ast_str_append(&tmp_availcause, 0, "%s%s", ast_str_strlen(tmp_availcause) ? "&" : "", tmp);
00182
00183 ast_hangup(tempchan);
00184 tempchan = NULL;
00185
00186 if (!option_all_avail) {
00187 break;
00188 }
00189 }
00190 cur = rest;
00191 } while (cur);
00192 }
00193
00194 pbx_builtin_setvar_helper(chan, "AVAILCHAN", ast_str_buffer(tmp_availchan));
00195
00196 pbx_builtin_setvar_helper(chan, "AVAILORIGCHAN", ast_str_buffer(tmp_availorig));
00197 pbx_builtin_setvar_helper(chan, "AVAILSTATUS", ast_str_buffer(tmp_availstat));
00198 pbx_builtin_setvar_helper(chan, "AVAILCAUSECODE", ast_str_buffer(tmp_availcause));
00199
00200 return 0;
00201 }
00202
00203 static int unload_module(void)
00204 {
00205 return ast_unregister_application(app);
00206 }
00207
00208 static int load_module(void)
00209 {
00210 return ast_register_application_xml(app, chanavail_exec) ?
00211 AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
00212 }
00213
00214 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Check channel availability");