Tue Nov 4 13:20:12 2008

Asterisk developer's documentation


app_directory.c

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00001 /*
00002  * Asterisk -- An open source telephony toolkit.
00003  *
00004  * Copyright (C) 1999 - 2005, Digium, Inc.
00005  *
00006  * Mark Spencer <markster@digium.com>
00007  *
00008  * See http://www.asterisk.org for more information about
00009  * the Asterisk project. Please do not directly contact
00010  * any of the maintainers of this project for assistance;
00011  * the project provides a web site, mailing lists and IRC
00012  * channels for your use.
00013  *
00014  * This program is free software, distributed under the terms of
00015  * the GNU General Public License Version 2. See the LICENSE file
00016  * at the top of the source tree.
00017  */
00018 
00019 /*! \file
00020  *
00021  * \brief Provide a directory of extensions
00022  *
00023  * \author Mark Spencer <markster@digium.com>
00024  * 
00025  * \ingroup applications
00026  */
00027  
00028 #include "asterisk.h"
00029 
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 78415 $")
00031 
00032 #include <string.h>
00033 #include <ctype.h>
00034 #include <stdlib.h>
00035 #include <stdio.h>
00036 
00037 #include "asterisk/lock.h"
00038 #include "asterisk/file.h"
00039 #include "asterisk/logger.h"
00040 #include "asterisk/channel.h"
00041 #include "asterisk/pbx.h"
00042 #include "asterisk/module.h"
00043 #include "asterisk/config.h"
00044 #include "asterisk/say.h"
00045 #include "asterisk/utils.h"
00046 #include "asterisk/app.h"
00047 
00048 #ifdef ODBC_STORAGE
00049 #include <errno.h>
00050 #include <sys/mman.h>
00051 #include "asterisk/res_odbc.h"
00052 
00053 static char odbc_database[80] = "asterisk";
00054 static char odbc_table[80] = "voicemessages";
00055 static char vmfmts[80] = "wav";
00056 #endif
00057 
00058 static char *app = "Directory";
00059 
00060 static char *synopsis = "Provide directory of voicemail extensions";
00061 static char *descrip =
00062 "  Directory(vm-context[|dial-context[|options]]): This application will present\n"
00063 "the calling channel with a directory of extensions from which they can search\n"
00064 "by name. The list of names and corresponding extensions is retrieved from the\n"
00065 "voicemail configuration file, voicemail.conf.\n"
00066 "  This application will immediately exit if one of the following DTMF digits are\n"
00067 "received and the extension to jump to exists:\n"
00068 "    0 - Jump to the 'o' extension, if it exists.\n"
00069 "    * - Jump to the 'a' extension, if it exists.\n\n"
00070 "  Parameters:\n"
00071 "    vm-context   - This is the context within voicemail.conf to use for the\n"
00072 "                   Directory.\n"
00073 "    dial-context - This is the dialplan context to use when looking for an\n"
00074 "                   extension that the user has selected, or when jumping to the\n"
00075 "                   'o' or 'a' extension.\n\n"
00076 "  Options:\n"
00077 "    e - In addition to the name, also read the extension number to the\n"
00078 "        caller before presenting dialing options.\n"
00079 "    f - Allow the caller to enter the first name of a user in the directory\n"
00080 "        instead of using the last name.\n";
00081 
00082 /* For simplicity, I'm keeping the format compatible with the voicemail config,
00083    but i'm open to suggestions for isolating it */
00084 
00085 #define VOICEMAIL_CONFIG "voicemail.conf"
00086 
00087 /* How many digits to read in */
00088 #define NUMDIGITS 3
00089 
00090 
00091 #ifdef ODBC_STORAGE
00092 struct generic_prepare_struct {
00093    const char *sql;
00094    const char *param;
00095 };
00096 
00097 static SQLHSTMT generic_prepare(struct odbc_obj *obj, void *data)
00098 {
00099    struct generic_prepare_struct *gps = data;
00100    SQLHSTMT stmt;
00101    int res;
00102 
00103    res = SQLAllocHandle(SQL_HANDLE_STMT, obj->con, &stmt);
00104    if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
00105       ast_log(LOG_WARNING, "SQL Alloc Handle failed!\n");
00106       return NULL;
00107    }
00108 
00109    res = SQLPrepare(stmt, (unsigned char *)gps->sql, SQL_NTS);
00110    if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
00111       ast_log(LOG_WARNING, "SQL Prepare failed![%s]\n", (char *)gps->sql);
00112       SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00113       return NULL;
00114    }
00115 
00116    if (!ast_strlen_zero(gps->param))
00117       SQLBindParameter(stmt, 1, SQL_PARAM_INPUT, SQL_C_CHAR, SQL_CHAR, strlen(gps->param), 0, (void *)gps->param, 0, NULL);
00118 
00119    return stmt;
00120 }
00121 
00122 static void retrieve_file(char *dir)
00123 {
00124    int x = 0;
00125    int res;
00126    int fd=-1;
00127    size_t fdlen = 0;
00128    void *fdm = MAP_FAILED;
00129    SQLHSTMT stmt;
00130    char sql[256];
00131    char fmt[80]="", empty[10] = "";
00132    char *c;
00133    SQLLEN colsize;
00134    char full_fn[256];
00135    struct odbc_obj *obj;
00136    struct generic_prepare_struct gps = { .sql = sql, .param = dir };
00137 
00138    obj = ast_odbc_request_obj(odbc_database, 1);
00139    if (obj) {
00140       do {
00141          ast_copy_string(fmt, vmfmts, sizeof(fmt));
00142          c = strchr(fmt, '|');
00143          if (c)
00144             *c = '\0';
00145          if (!strcasecmp(fmt, "wav49"))
00146             strcpy(fmt, "WAV");
00147          snprintf(full_fn, sizeof(full_fn), "%s.%s", dir, fmt);
00148          snprintf(sql, sizeof(sql), "SELECT recording FROM %s WHERE dir=? AND msgnum=-1", odbc_table);
00149          stmt = ast_odbc_prepare_and_execute(obj, generic_prepare, &gps);
00150 
00151          if (!stmt) {
00152             ast_log(LOG_WARNING, "SQL Execute error!\n[%s]\n\n", sql);
00153             break;
00154          }
00155          res = SQLFetch(stmt);
00156          if (res == SQL_NO_DATA) {
00157             SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00158             break;
00159          } else if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
00160             ast_log(LOG_WARNING, "SQL Fetch error!\n[%s]\n\n", sql);
00161             SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00162             break;
00163          }
00164          fd = open(full_fn, O_RDWR | O_CREAT | O_TRUNC, 0770);
00165          if (fd < 0) {
00166             ast_log(LOG_WARNING, "Failed to write '%s': %s\n", full_fn, strerror(errno));
00167             SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00168             break;
00169          }
00170 
00171          res = SQLGetData(stmt, 1, SQL_BINARY, empty, 0, &colsize);
00172          fdlen = colsize;
00173          if (fd > -1) {
00174             char tmp[1]="";
00175             lseek(fd, fdlen - 1, SEEK_SET);
00176             if (write(fd, tmp, 1) != 1) {
00177                close(fd);
00178                fd = -1;
00179                break;
00180             }
00181             if (fd > -1)
00182                fdm = mmap(NULL, fdlen, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
00183          }
00184          if (fdm != MAP_FAILED) {
00185             memset(fdm, 0, fdlen);
00186             res = SQLGetData(stmt, x + 1, SQL_BINARY, fdm, fdlen, &colsize);
00187             if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
00188                ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
00189                SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00190                break;
00191             }
00192          }
00193          SQLFreeHandle(SQL_HANDLE_STMT, stmt);
00194       } while (0);
00195       ast_odbc_release_obj(obj);
00196    } else
00197       ast_log(LOG_WARNING, "Failed to obtain database object for '%s'!\n", odbc_database);
00198    if (fdm != MAP_FAILED)
00199       munmap(fdm, fdlen);
00200    if (fd > -1)
00201       close(fd);
00202    return;
00203 }
00204 #endif
00205 
00206 static char *convert(const char *lastname)
00207 {
00208    char *tmp;
00209    int lcount = 0;
00210    tmp = ast_malloc(NUMDIGITS + 1);
00211    if (tmp) {
00212       while((*lastname > 32) && lcount < NUMDIGITS) {
00213          switch(toupper(*lastname)) {
00214          case '1':
00215             tmp[lcount++] = '1';
00216             break;
00217          case '2':
00218          case 'A':
00219          case 'B':
00220          case 'C':
00221             tmp[lcount++] = '2';
00222             break;
00223          case '3':
00224          case 'D':
00225          case 'E':
00226          case 'F':
00227             tmp[lcount++] = '3';
00228             break;
00229          case '4':
00230          case 'G':
00231          case 'H':
00232          case 'I':
00233             tmp[lcount++] = '4';
00234             break;
00235          case '5':
00236          case 'J':
00237          case 'K':
00238          case 'L':
00239             tmp[lcount++] = '5';
00240             break;
00241          case '6':
00242          case 'M':
00243          case 'N':
00244          case 'O':
00245             tmp[lcount++] = '6';
00246             break;
00247          case '7':
00248          case 'P':
00249          case 'Q':
00250          case 'R':
00251          case 'S':
00252             tmp[lcount++] = '7';
00253             break;
00254          case '8':
00255          case 'T':
00256          case 'U':
00257          case 'V':
00258             tmp[lcount++] = '8';
00259             break;
00260          case '9':
00261          case 'W':
00262          case 'X':
00263          case 'Y':
00264          case 'Z':
00265             tmp[lcount++] = '9';
00266             break;
00267          }
00268          lastname++;
00269       }
00270       tmp[lcount] = '\0';
00271    }
00272    return tmp;
00273 }
00274 
00275 /* play name of mailbox owner.
00276  * returns:  -1 for bad or missing extension
00277  *           '1' for selected entry from directory
00278  *           '*' for skipped entry from directory
00279  */
00280 static int play_mailbox_owner(struct ast_channel *chan, char *context,
00281       char *dialcontext, char *ext, char *name, int readext,
00282       int fromappvm)
00283 {
00284    int res = 0;
00285    int loop;
00286    char fn[256];
00287 
00288    /* Check for the VoiceMail2 greeting first */
00289    snprintf(fn, sizeof(fn), "%s/voicemail/%s/%s/greet",
00290       ast_config_AST_SPOOL_DIR, context, ext);
00291 #ifdef ODBC_STORAGE
00292    retrieve_file(fn);
00293 #endif
00294 
00295    if (ast_fileexists(fn, NULL, chan->language) <= 0) {
00296       /* no file, check for an old-style Voicemail greeting */
00297       snprintf(fn, sizeof(fn), "%s/vm/%s/greet",
00298          ast_config_AST_SPOOL_DIR, ext);
00299    }
00300 #ifdef ODBC_STORAGE
00301    retrieve_file(fn);
00302 #endif
00303 
00304    if (ast_fileexists(fn, NULL, chan->language) > 0) {
00305       res = ast_stream_and_wait(chan, fn, chan->language, AST_DIGIT_ANY);
00306       ast_stopstream(chan);
00307       /* If Option 'e' was specified, also read the extension number with the name */
00308       if (readext) {
00309          ast_stream_and_wait(chan, "vm-extension", chan->language, AST_DIGIT_ANY);
00310          res = ast_say_character_str(chan, ext, AST_DIGIT_ANY, chan->language);
00311       }
00312    } else {
00313       res = ast_say_character_str(chan, S_OR(name, ext), AST_DIGIT_ANY, chan->language);
00314       if (!ast_strlen_zero(name) && readext) {
00315          ast_stream_and_wait(chan, "vm-extension", chan->language, AST_DIGIT_ANY);
00316          res = ast_say_character_str(chan, ext, AST_DIGIT_ANY, chan->language);
00317       }
00318    }
00319 #ifdef ODBC_STORAGE
00320    ast_filedelete(fn, NULL);  
00321 #endif
00322 
00323    for (loop = 3 ; loop > 0; loop--) {
00324       if (!res)
00325          res = ast_stream_and_wait(chan, "dir-instr", chan->language, AST_DIGIT_ANY);
00326       if (!res)
00327          res = ast_waitfordigit(chan, 3000);
00328       ast_stopstream(chan);
00329    
00330       if (res < 0) /* User hungup, so jump out now */
00331          break;
00332       if (res == '1') { /* Name selected */
00333          if (fromappvm) {
00334             /* We still want to set the exten though */
00335             ast_copy_string(chan->exten, ext, sizeof(chan->exten));
00336          } else {
00337             if (ast_goto_if_exists(chan, dialcontext, ext, 1)) {
00338                ast_log(LOG_WARNING,
00339                   "Can't find extension '%s' in context '%s'.  "
00340                   "Did you pass the wrong context to Directory?\n",
00341                   ext, dialcontext);
00342                res = -1;
00343             }
00344          }
00345          break;
00346       }
00347       if (res == '*') /* Skip to next match in list */
00348          break;
00349 
00350       /* Not '1', or '*', so decrement number of tries */
00351       res = 0;
00352    }
00353 
00354    return(res);
00355 }
00356 
00357 static struct ast_config *realtime_directory(char *context)
00358 {
00359    struct ast_config *cfg;
00360    struct ast_config *rtdata;
00361    struct ast_category *cat;
00362    struct ast_variable *var;
00363    char *mailbox;
00364    const char *fullname;
00365    const char *hidefromdir;
00366    char tmp[100];
00367 
00368    /* Load flat file config. */
00369    cfg = ast_config_load(VOICEMAIL_CONFIG);
00370 
00371    if (!cfg) {
00372       /* Loading config failed. */
00373       ast_log(LOG_WARNING, "Loading config failed.\n");
00374       return NULL;
00375    }
00376 
00377    /* Get realtime entries, categorized by their mailbox number
00378       and present in the requested context */
00379    rtdata = ast_load_realtime_multientry("voicemail", "mailbox LIKE", "%", "context", context, NULL);
00380 
00381    /* if there are no results, just return the entries from the config file */
00382    if (!rtdata)
00383       return cfg;
00384 
00385    /* Does the context exist within the config file? If not, make one */
00386    cat = ast_category_get(cfg, context);
00387    if (!cat) {
00388       cat = ast_category_new(context);
00389       if (!cat) {
00390          ast_log(LOG_WARNING, "Out of memory\n");
00391          ast_config_destroy(cfg);
00392          return NULL;
00393       }
00394       ast_category_append(cfg, cat);
00395    }
00396 
00397    mailbox = NULL;
00398    while ( (mailbox = ast_category_browse(rtdata, mailbox)) ) {
00399       fullname = ast_variable_retrieve(rtdata, mailbox, "fullname");
00400       hidefromdir = ast_variable_retrieve(rtdata, mailbox, "hidefromdir");
00401       snprintf(tmp, sizeof(tmp), "no-password,%s,hidefromdir=%s",
00402           fullname ? fullname : "",
00403           hidefromdir ? hidefromdir : "no");
00404       var = ast_variable_new(mailbox, tmp);
00405       if (var)
00406          ast_variable_append(cat, var);
00407       else
00408          ast_log(LOG_WARNING, "Out of memory adding mailbox '%s'\n", mailbox);
00409    }
00410    ast_config_destroy(rtdata);
00411 
00412    return cfg;
00413 }
00414 
00415 static int do_directory(struct ast_channel *chan, struct ast_config *cfg, struct ast_config *ucfg, char *context, char *dialcontext, char digit, int last, int readext, int fromappvm)
00416 {
00417    /* Read in the first three digits..  "digit" is the first digit, already read */
00418    char ext[NUMDIGITS + 1], *cat;
00419    char name[80] = "";
00420    struct ast_variable *v;
00421    int res;
00422    int found=0;
00423    int lastuserchoice = 0;
00424    char *start, *conv, *stringp = NULL;
00425    const char *pos;
00426    int breakout = 0;
00427 
00428    if (ast_strlen_zero(context)) {
00429       ast_log(LOG_WARNING,
00430          "Directory must be called with an argument "
00431          "(context in which to interpret extensions)\n");
00432       return -1;
00433    }
00434    if (digit == '0') {
00435       if (!ast_goto_if_exists(chan, dialcontext, "o", 1) ||
00436           (!ast_strlen_zero(chan->macrocontext) &&
00437            !ast_goto_if_exists(chan, chan->macrocontext, "o", 1))) {
00438          return 0;
00439       } else {
00440          ast_log(LOG_WARNING, "Can't find extension 'o' in current context.  "
00441             "Not Exiting the Directory!\n");
00442          res = 0;
00443       }
00444    }  
00445    if (digit == '*') {
00446       if (!ast_goto_if_exists(chan, dialcontext, "a", 1) ||
00447           (!ast_strlen_zero(chan->macrocontext) &&
00448            !ast_goto_if_exists(chan, chan->macrocontext, "a", 1))) {
00449          return 0;
00450       } else {
00451          ast_log(LOG_WARNING, "Can't find extension 'a' in current context.  "
00452             "Not Exiting the Directory!\n");
00453          res = 0;
00454       }
00455    }  
00456    memset(ext, 0, sizeof(ext));
00457    ext[0] = digit;
00458    res = 0;
00459    if (ast_readstring(chan, ext + 1, NUMDIGITS - 1, 3000, 3000, "#") < 0) res = -1;
00460    if (!res) {
00461       /* Search for all names which start with those digits */
00462       v = ast_variable_browse(cfg, context);
00463       while(v && !res) {
00464          /* Find all candidate extensions */
00465          while(v) {
00466             /* Find a candidate extension */
00467             start = strdup(v->value);
00468             if (start && !strcasestr(start, "hidefromdir=yes")) {
00469                stringp=start;
00470                strsep(&stringp, ",");
00471                pos = strsep(&stringp, ",");
00472                if (pos) {
00473                   ast_copy_string(name, pos, sizeof(name));
00474                   /* Grab the last name */
00475                   if (last && strrchr(pos,' '))
00476                      pos = strrchr(pos, ' ') + 1;
00477                   conv = convert(pos);
00478                   if (conv) {
00479                      if (!strncmp(conv, ext, strlen(ext))) {
00480                         /* Match! */
00481                         found++;
00482                         free(conv);
00483                         free(start);
00484                         break;
00485                      }
00486                      free(conv);
00487                   }
00488                }
00489                free(start);
00490             }
00491             v = v->next;
00492          }
00493 
00494          if (v) {
00495             /* We have a match -- play a greeting if they have it */
00496             res = play_mailbox_owner(chan, context, dialcontext, v->name, name, readext, fromappvm);
00497             switch (res) {
00498                case -1:
00499                   /* user pressed '1' but extension does not exist, or
00500                    * user hungup
00501                    */
00502                   lastuserchoice = 0;
00503                   break;
00504                case '1':
00505                   /* user pressed '1' and extensions exists;
00506                      play_mailbox_owner will already have done
00507                      a goto() on the channel
00508                    */
00509                   lastuserchoice = res;
00510                   break;
00511                case '*':
00512                   /* user pressed '*' to skip something found */
00513                   lastuserchoice = res;
00514                   res = 0;
00515                   break;
00516                default:
00517                   break;
00518             }
00519             v = v->next;
00520          }
00521       }
00522 
00523       if (!res && ucfg) {
00524          /* Search users.conf for all names which start with those digits */
00525          for (cat = ast_category_browse(ucfg, NULL); cat && !res ; cat = ast_category_browse(ucfg, cat)) {
00526             if (!strcasecmp(cat, "general"))
00527                continue;
00528             if (!ast_true(ast_config_option(ucfg, cat, "hasdirectory")))
00529                continue;
00530             
00531             /* Find all candidate extensions */
00532             if ((pos = ast_variable_retrieve(ucfg, cat, "fullname"))) {
00533                ast_copy_string(name, pos, sizeof(name));
00534                /* Grab the last name */
00535                if (last && strrchr(pos,' '))
00536                   pos = strrchr(pos, ' ') + 1;
00537                conv = convert(pos);
00538                if (conv) {
00539                   if (!strcmp(conv, ext)) {
00540                      /* Match! */
00541                      found++;
00542                      /* We have a match -- play a greeting if they have it */
00543                      res = play_mailbox_owner(chan, context, dialcontext, cat, name, readext, fromappvm);
00544                      switch (res) {
00545                      case -1:
00546                         /* user pressed '1' but extension does not exist, or
00547                          * user hungup
00548                          */
00549                         lastuserchoice = 0;
00550                         breakout = 1;
00551                         break;
00552                      case '1':
00553                         /* user pressed '1' and extensions exists;
00554                            play_mailbox_owner will already have done
00555                            a goto() on the channel
00556                          */
00557                         lastuserchoice = res;
00558                         breakout = 1;
00559                         break;
00560                      case '*':
00561                         /* user pressed '*' to skip something found */
00562                         lastuserchoice = res;
00563                         breakout = 0;
00564                         res = 0;
00565                         break;
00566                      default:
00567                         breakout = 1;
00568                         break;
00569                      }
00570                      free(conv);
00571                      if (breakout)
00572                         break;
00573                   }
00574                   else
00575                      free(conv);
00576                }
00577             }
00578          }
00579       }
00580          
00581       if (lastuserchoice != '1') {
00582          res = ast_streamfile(chan, found ? "dir-nomore" : "dir-nomatch", chan->language);
00583          if (!res)
00584             res = 1;
00585          return res;
00586       }
00587       return 0;
00588    }
00589    return res;
00590 }
00591 
00592 static int directory_exec(struct ast_channel *chan, void *data)
00593 {
00594    int res = 0;
00595    struct ast_module_user *u;
00596    struct ast_config *cfg, *ucfg;
00597    int last = 1;
00598    int readext = 0;
00599    int fromappvm = 0;
00600    const char *dirintro;
00601    char *parse;
00602    AST_DECLARE_APP_ARGS(args,
00603       AST_APP_ARG(vmcontext);
00604       AST_APP_ARG(dialcontext);
00605       AST_APP_ARG(options);
00606    );
00607 
00608    if (ast_strlen_zero(data)) {
00609       ast_log(LOG_WARNING, "Directory requires an argument (context[,dialcontext])\n");
00610       return -1;
00611    }
00612 
00613    u = ast_module_user_add(chan);
00614 
00615    parse = ast_strdupa(data);
00616 
00617    AST_STANDARD_APP_ARGS(args, parse);
00618       
00619    if (args.options) {
00620       if (strchr(args.options, 'f'))
00621          last = 0;
00622       if (strchr(args.options, 'e'))
00623          readext = 1;
00624       if (strchr(args.options, 'v'))
00625          fromappvm = 1;
00626    }
00627 
00628    if (ast_strlen_zero(args.dialcontext)) 
00629       args.dialcontext = args.vmcontext;
00630 
00631    cfg = realtime_directory(args.vmcontext);
00632    if (!cfg) {
00633       ast_log(LOG_ERROR, "Unable to read the configuration data!\n");
00634       ast_module_user_remove(u);
00635       return -1;
00636    }
00637    
00638    ucfg = ast_config_load("users.conf");
00639 
00640    dirintro = ast_variable_retrieve(cfg, args.vmcontext, "directoryintro");
00641    if (ast_strlen_zero(dirintro))
00642       dirintro = ast_variable_retrieve(cfg, "general", "directoryintro");
00643    if (ast_strlen_zero(dirintro))
00644       dirintro = last ? "dir-intro" : "dir-intro-fn";
00645 
00646    if (chan->_state != AST_STATE_UP) 
00647       res = ast_answer(chan);
00648 
00649    for (;;) {
00650       if (!res)
00651          res = ast_stream_and_wait(chan, dirintro, chan->language, AST_DIGIT_ANY);
00652       ast_stopstream(chan);
00653       if (!res)
00654          res = ast_waitfordigit(chan, 5000);
00655       if (res > 0) {
00656          res = do_directory(chan, cfg, ucfg, args.vmcontext, args.dialcontext, res, last, readext, fromappvm);
00657          if (res > 0) {
00658             res = ast_waitstream(chan, AST_DIGIT_ANY);
00659             ast_stopstream(chan);
00660             if (res >= 0)
00661                continue;
00662          }
00663       }
00664       break;
00665    }
00666    if (ucfg)
00667       ast_config_destroy(ucfg);
00668    ast_config_destroy(cfg);
00669    ast_module_user_remove(u);
00670    return res;
00671 }
00672 
00673 static int unload_module(void)
00674 {
00675    int res;
00676    res = ast_unregister_application(app);
00677    return res;
00678 }
00679 
00680 static int load_module(void)
00681 {
00682 #ifdef ODBC_STORAGE
00683    struct ast_config *cfg = ast_config_load(VOICEMAIL_CONFIG);
00684    const char *tmp;
00685 
00686    if (cfg) {
00687       if ((tmp = ast_variable_retrieve(cfg, "general", "odbcstorage"))) {
00688          ast_copy_string(odbc_database, tmp, sizeof(odbc_database));
00689       }
00690       if ((tmp = ast_variable_retrieve(cfg, "general", "odbctable"))) {
00691          ast_copy_string(odbc_table, tmp, sizeof(odbc_table));
00692       }
00693       if ((tmp = ast_variable_retrieve(cfg, "general", "format"))) {
00694          ast_copy_string(vmfmts, tmp, sizeof(vmfmts));
00695       }
00696       ast_config_destroy(cfg);
00697    } else
00698       ast_log(LOG_WARNING, "Unable to load " VOICEMAIL_CONFIG " - ODBC defaults will be used\n");
00699 #endif
00700 
00701    return ast_register_application(app, directory_exec, synopsis, descrip);
00702 }
00703 
00704 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Extension Directory");

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