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00026 #include <stdlib.h>
00027 #include <stdio.h>
00028 #include <string.h>
00029 #include <unistd.h>
00030 #include <sys/types.h>
00031
00032 #include "asterisk.h"
00033
00034 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 7221 $")
00035
00036 #include "asterisk/file.h"
00037 #include "asterisk/logger.h"
00038 #include "asterisk/channel.h"
00039 #include "asterisk/pbx.h"
00040 #include "asterisk/module.h"
00041 #include "asterisk/options.h"
00042 #include "asterisk/lock.h"
00043
00044 static char *synopsis = "Wait for Ring Application";
00045
00046 static char *tdesc = "Waits until first ring after time";
00047
00048 static char *desc = " WaitForRing(timeout)\n"
00049 "Returns 0 after waiting at least timeout seconds. and\n"
00050 "only after the next ring has completed. Returns 0 on\n"
00051 "success or -1 on hangup\n";
00052
00053 static char *app = "WaitForRing";
00054
00055 STANDARD_LOCAL_USER;
00056
00057 LOCAL_USER_DECL;
00058
00059 static int waitforring_exec(struct ast_channel *chan, void *data)
00060 {
00061 struct localuser *u;
00062 struct ast_frame *f;
00063 int res = 0;
00064 int ms;
00065
00066 if (!data || (sscanf(data, "%d", &ms) != 1)) {
00067 ast_log(LOG_WARNING, "WaitForRing requires an argument (minimum seconds)\n");
00068 return 0;
00069 }
00070
00071 LOCAL_USER_ADD(u);
00072
00073 ms *= 1000;
00074 while(ms > 0) {
00075 ms = ast_waitfor(chan, ms);
00076 if (ms < 0) {
00077 res = ms;
00078 break;
00079 }
00080 if (ms > 0) {
00081 f = ast_read(chan);
00082 if (!f) {
00083 res = -1;
00084 break;
00085 }
00086 if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
00087 if (option_verbose > 2)
00088 ast_verbose(VERBOSE_PREFIX_3 "Got a ring but still waiting for timeout\n");
00089 }
00090 ast_frfree(f);
00091 }
00092 }
00093
00094 if (!res) {
00095 ms = 99999999;
00096 while(ms > 0) {
00097 ms = ast_waitfor(chan, ms);
00098 if (ms < 0) {
00099 res = ms;
00100 break;
00101 }
00102 if (ms > 0) {
00103 f = ast_read(chan);
00104 if (!f) {
00105 res = -1;
00106 break;
00107 }
00108 if ((f->frametype == AST_FRAME_CONTROL) && (f->subclass == AST_CONTROL_RING)) {
00109 if (option_verbose > 2)
00110 ast_verbose(VERBOSE_PREFIX_3 "Got a ring after the timeout\n");
00111 ast_frfree(f);
00112 break;
00113 }
00114 ast_frfree(f);
00115 }
00116 }
00117 }
00118 LOCAL_USER_REMOVE(u);
00119
00120 return res;
00121 }
00122
00123 int unload_module(void)
00124 {
00125 int res;
00126
00127 res = ast_unregister_application(app);
00128
00129 STANDARD_HANGUP_LOCALUSERS;
00130
00131 return res;
00132 }
00133
00134 int load_module(void)
00135 {
00136 return ast_register_application(app, waitforring_exec, synopsis, desc);
00137 }
00138
00139 char *description(void)
00140 {
00141 return tdesc;
00142 }
00143
00144 int usecount(void)
00145 {
00146 int res;
00147 STANDARD_USECOUNT(res);
00148 return res;
00149 }
00150
00151 char *key()
00152 {
00153 return ASTERISK_GPL_KEY;
00154 }