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00026 #include <stdlib.h>
00027 #include <stdio.h>
00028 #include <string.h>
00029 #include <unistd.h>
00030 #include <ctype.h>
00031
00032 #include "asterisk.h"
00033
00034 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 7221 $")
00035
00036 #include "asterisk/lock.h"
00037 #include "asterisk/file.h"
00038 #include "asterisk/logger.h"
00039 #include "asterisk/channel.h"
00040 #include "asterisk/pbx.h"
00041 #include "asterisk/options.h"
00042 #include "asterisk/config.h"
00043 #include "asterisk/module.h"
00044 #include "asterisk/enum.h"
00045 #include "asterisk/utils.h"
00046 #include "asterisk/app.h"
00047 #include "asterisk/options.h"
00048
00049 static char *tdesc = "ENUM Lookup";
00050
00051 static char *app = "EnumLookup";
00052
00053 static char *synopsis = "Lookup number in ENUM";
00054
00055 static char *descrip =
00056 " EnumLookup(exten[|option]): Looks up an extension via ENUM and sets\n"
00057 "the variable 'ENUM'. For VoIP URIs this variable will \n"
00058 "look like 'TECHNOLOGY/URI' with the appropriate technology.\n"
00059 "Currently, the enumservices SIP, H323, IAX, IAX2 and TEL are recognized. \n"
00060 "\nReturns status in the ENUMSTATUS channel variable:\n"
00061 " ERROR Failed to do a lookup\n"
00062 " <tech> Technology of the successful lookup: SIP, H323, IAX, IAX2 or TEL\n"
00063 " BADURI Got URI Asterisk does not understand.\n"
00064 " The option string may contain zero or the following character:\n"
00065 " 'j' -- jump to +101 priority if the lookup isn't successful.\n"
00066 " and jump to +51 priority on a TEL entry.\n";
00067
00068 #define ENUM_CONFIG "enum.conf"
00069
00070 static char h323driver[80] = "";
00071 #define H323DRIVERDEFAULT "H323"
00072
00073 STANDARD_LOCAL_USER;
00074
00075 LOCAL_USER_DECL;
00076
00077
00078 static int enumlookup_exec(struct ast_channel *chan, void *data)
00079 {
00080 int res=0,priority_jump=0;
00081 char tech[80];
00082 char dest[80];
00083 char tmp[256];
00084 char *c,*t = NULL;
00085 static int dep_warning=0;
00086 struct localuser *u;
00087 char *parse;
00088 AST_DECLARE_APP_ARGS(args,
00089 AST_APP_ARG(d);
00090 AST_APP_ARG(o);
00091 );
00092
00093 if (ast_strlen_zero(data)) {
00094 ast_log(LOG_WARNING, "EnumLookup requires an argument (extension)\n");
00095 return -1;
00096 }
00097
00098 if (!dep_warning) {
00099 ast_log(LOG_WARNING, "The application EnumLookup is deprecated. Please use the ENUMLOOKUP() function instead.\n");
00100 dep_warning = 1;
00101 }
00102
00103 LOCAL_USER_ADD(u);
00104
00105 parse = ast_strdupa(data);
00106 if (!parse) {
00107 ast_log(LOG_ERROR, "Out of memory!\n");
00108 LOCAL_USER_REMOVE(u);
00109 return -1;
00110 }
00111
00112 AST_STANDARD_APP_ARGS(args, parse);
00113
00114 tech[0] = '\0';
00115 dest[0] = '\0';
00116
00117 if (args.o) {
00118 if (strchr(args.o, 'j'))
00119 priority_jump = 1;
00120 }
00121
00122 res = ast_get_enum(chan, args.d, dest, sizeof(dest), tech, sizeof(tech), NULL, NULL);
00123
00124 if (!res) {
00125 if (priority_jump || option_priority_jumping) {
00126
00127 ast_goto_if_exists(chan, chan->context, chan->exten, chan->priority + 101);
00128 }
00129 pbx_builtin_setvar_helper(chan, "ENUMSTATUS", "ERROR");
00130 LOCAL_USER_REMOVE(u);
00131 return 0;
00132 }
00133 pbx_builtin_setvar_helper(chan, "ENUMSTATUS", tech);
00134
00135 if (res > 0) {
00136 if (!strcasecmp(tech, "SIP")) {
00137 c = dest;
00138 if (!strncmp(c, "sip:", 4))
00139 c += 4;
00140 snprintf(tmp, sizeof(tmp), "SIP/%s", c);
00141 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
00142 } else if (!strcasecmp(tech, "h323")) {
00143 c = dest;
00144 if (!strncmp(c, "h323:", 5))
00145 c += 5;
00146 snprintf(tmp, sizeof(tmp), "%s/%s", h323driver, c);
00147
00148 t = strchr(c,';');
00149 if (t)
00150 *t = 0;
00151 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
00152 } else if (!strcasecmp(tech, "iax")) {
00153 c = dest;
00154 if (!strncmp(c, "iax:", 4))
00155 c += 4;
00156 snprintf(tmp, sizeof(tmp), "IAX/%s", c);
00157 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
00158 } else if (!strcasecmp(tech, "iax2")) {
00159 c = dest;
00160 if (!strncmp(c, "iax2:", 5))
00161 c += 5;
00162 snprintf(tmp, sizeof(tmp), "IAX2/%s", c);
00163 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
00164 } else if (!strcasecmp(tech, "tel")) {
00165 c = dest;
00166 if (!strncmp(c, "tel:", 4))
00167 c += 4;
00168
00169 if (c[0] != '+') {
00170 ast_log(LOG_NOTICE, "tel: uri must start with a \"+\" (got '%s')\n", c);
00171 res = 0;
00172 } else {
00173
00174 t = tmp;
00175 while( *c && (*c != ';') && (t - tmp < (sizeof(tmp) - 1))) {
00176 if (isdigit(*c))
00177 *t++ = *c;
00178 c++;
00179 }
00180 *t = 0;
00181 pbx_builtin_setvar_helper(chan, "ENUM", tmp);
00182 ast_log(LOG_NOTICE, "tel: ENUM set to \"%s\"\n", tmp);
00183 if (priority_jump || option_priority_jumping) {
00184 if (ast_goto_if_exists(chan, chan->context, chan->exten, chan->priority + 51))
00185 res = 0;
00186 }
00187 }
00188 } else if (!ast_strlen_zero(tech)) {
00189 ast_log(LOG_NOTICE, "Don't know how to handle technology '%s'\n", tech);
00190 pbx_builtin_setvar_helper(chan, "ENUMSTATUS", "BADURI");
00191 res = 0;
00192 }
00193 }
00194
00195 LOCAL_USER_REMOVE(u);
00196
00197 return 0;
00198 }
00199
00200
00201 static int load_config(void)
00202 {
00203 struct ast_config *cfg;
00204 char *s;
00205
00206 cfg = ast_config_load(ENUM_CONFIG);
00207 if (cfg) {
00208 if (!(s=ast_variable_retrieve(cfg, "general", "h323driver"))) {
00209 strncpy(h323driver, H323DRIVERDEFAULT, sizeof(h323driver) - 1);
00210 } else {
00211 strncpy(h323driver, s, sizeof(h323driver) - 1);
00212 }
00213 ast_config_destroy(cfg);
00214 return 0;
00215 }
00216 ast_log(LOG_NOTICE, "No ENUM Config file, using defaults\n");
00217 return 0;
00218 }
00219
00220
00221
00222 int unload_module(void)
00223 {
00224 int res;
00225
00226 res = ast_unregister_application(app);
00227
00228 STANDARD_HANGUP_LOCALUSERS;
00229
00230 return res;
00231 }
00232
00233
00234 int load_module(void)
00235 {
00236 int res;
00237
00238 res = ast_register_application(app, enumlookup_exec, synopsis, descrip);
00239
00240 if (!res)
00241 res = load_config();
00242
00243 return res;
00244 }
00245
00246
00247 int reload(void)
00248 {
00249 return load_config();
00250 }
00251
00252
00253
00254 char *description(void)
00255 {
00256 return tdesc;
00257 }
00258
00259 int usecount(void)
00260 {
00261 int res;
00262 STANDARD_USECOUNT(res);
00263 return res;
00264 }
00265
00266 char *key()
00267 {
00268 return ASTERISK_GPL_KEY;
00269 }
00270