diff options
| -rw-r--r-- | apps/app_directory.c | 780 |
1 files changed, 383 insertions, 397 deletions
diff --git a/apps/app_directory.c b/apps/app_directory.c index 6669d0970..08d5cf842 100644 --- a/apps/app_directory.c +++ b/apps/app_directory.c @@ -88,9 +88,12 @@ enum { OPT_SELECTFROMMENU = (1 << 3), } directory_option_flags; -struct items { +struct directory_item { char exten[AST_MAX_EXTENSION + 1]; char name[AST_MAX_EXTENSION + 1]; + char key[50]; /* Text to order items. Either lastname+firstname or firstname+lastname */ + + AST_LIST_ENTRY(directory_item) entry; }; AST_APP_OPTIONS(directory_app_options, { @@ -215,73 +218,80 @@ static void retrieve_file(char *dir) } #endif -static char *convert(const char *lastname) +static int compare(const char *text, const char *template) { - char *tmp; - int lcount = 0; - tmp = ast_malloc(NUMDIGITS + 1); - if (tmp) { - while((*lastname > 32) && lcount < NUMDIGITS) { - switch(toupper(*lastname)) { - case '1': - tmp[lcount++] = '1'; - break; - case '2': - case 'A': - case 'B': - case 'C': - tmp[lcount++] = '2'; - break; - case '3': - case 'D': - case 'E': - case 'F': - tmp[lcount++] = '3'; - break; - case '4': - case 'G': - case 'H': - case 'I': - tmp[lcount++] = '4'; - break; - case '5': - case 'J': - case 'K': - case 'L': - tmp[lcount++] = '5'; - break; - case '6': - case 'M': - case 'N': - case 'O': - tmp[lcount++] = '6'; - break; - case '7': - case 'P': - case 'Q': - case 'R': - case 'S': - tmp[lcount++] = '7'; - break; - case '8': - case 'T': - case 'U': - case 'V': - tmp[lcount++] = '8'; - break; - case '9': - case 'W': - case 'X': - case 'Y': - case 'Z': - tmp[lcount++] = '9'; - break; - } - lastname++; + char digit; + + while (*template) { + digit = toupper(*text++); + switch (digit) { + case 0: + return -1; + case '1': + digit = '1'; + break; + case '2': + case 'A': + case 'B': + case 'C': + digit = '2'; + break; + case '3': + case 'D': + case 'E': + case 'F': + digit = '3'; + break; + case '4': + case 'G': + case 'H': + case 'I': + digit = '4'; + break; + case '5': + case 'J': + case 'K': + case 'L': + digit = '5'; + break; + case '6': + case 'M': + case 'N': + case 'O': + digit = '6'; + break; + case '7': + case 'P': + case 'Q': + case 'R': + case 'S': + digit = '7'; + break; + case '8': + case 'T': + case 'U': + case 'V': + digit = '8'; + break; + case '9': + case 'W': + case 'X': + case 'Y': + case 'Z': + digit = '9'; + break; + + default: + if (digit > ' ') + return -1; + continue; } - tmp[lcount] = '\0'; + + if (*template++ != digit) + return -1; } - return tmp; + + return 0; } /* play name of mailbox owner. @@ -333,85 +343,117 @@ static int play_mailbox_owner(struct ast_channel *chan, const char *context, return res; } -static int get_mailbox_response(struct ast_channel *chan, const char *context, const char *dialcontext, const char *ext, const char *name, struct ast_flags *flags) +static int select_entry(struct ast_channel *chan, const char *context, const char *dialcontext, const struct directory_item *item, struct ast_flags *flags) { - int res = 0; - int loop = 3; + ast_debug(1, "Selecting '%s' - %s@%s\n", item->name, item->exten, dialcontext); - res = play_mailbox_owner(chan, context, ext, name, flags); - for (loop = 3 ; loop > 0; loop--) { - if (!res) - res = ast_stream_and_wait(chan, "dir-instr", AST_DIGIT_ANY); - if (!res) - res = ast_waitfordigit(chan, 3000); - ast_stopstream(chan); + if (ast_test_flag(flags, OPT_FROMVOICEMAIL)) { + /* We still want to set the exten though */ + ast_copy_string(chan->exten, item->exten, sizeof(chan->exten)); + } else if (ast_goto_if_exists(chan, dialcontext, item->exten, 1)) { + ast_log(LOG_WARNING, + "Can't find extension '%s' in context '%s'. " + "Did you pass the wrong context to Directory?\n", + item->exten, dialcontext); + return -1; + } + + return 0; +} + +static int select_item_seq(struct ast_channel *chan, struct directory_item **items, int count, const char *context, const char *dialcontext, struct ast_flags *flags) +{ + struct directory_item *item, **ptr; + int i, res, loop; + + for (ptr = items, i = 0; i < count; i++, ptr++) { + item = *ptr; + + for (loop = 3 ; loop > 0; loop--) { + res = play_mailbox_owner(chan, context, item->exten, item->name, flags); + + if (!res) + res = ast_stream_and_wait(chan, "dir-instr", AST_DIGIT_ANY); + if (!res) + res = ast_waitfordigit(chan, 3000); + ast_stopstream(chan); - if (res < 0) /* User hungup, so jump out now */ - break; - if (res == '1') { /* Name selected */ - if (ast_test_flag(flags, OPT_FROMVOICEMAIL)) { - /* We still want to set the exten though */ - ast_copy_string(chan->exten, ext, sizeof(chan->exten)); - } else { - if (ast_goto_if_exists(chan, dialcontext, ext, 1)) { - ast_log(LOG_WARNING, - "Can't find extension '%s' in context '%s'. " - "Did you pass the wrong context to Directory?\n", - ext, dialcontext); - res = -1; - } + if (res == '1') { /* Name selected */ + return select_entry(chan, context, dialcontext, item, flags) ? -1 : 1; + } else if (res == '*') { + /* Skip to next match in list */ + break; } - break; - } - if (res == '*') /* Skip to next match in list */ - break; - /* Not '1', or '*', so decrement number of tries */ - res = 0; + if (res < 0) + return -1; + + res = 0; + } } - return(res); + /* Nothing was selected */ + return 0; } -static int select_item(struct ast_channel *chan, const struct items *items, int itemcount, const char *context, const char *dialcontext, struct ast_flags *flags) +static int select_item_menu(struct ast_channel *chan, struct directory_item **items, int count, const char *context, const char *dialcontext, struct ast_flags *flags) { - int i, res = 0; + struct directory_item **block, *item; + int i, limit, res = 0; char buf[9]; - for (i = 0; i < itemcount; i++) { - snprintf(buf, sizeof(buf), "digits/%d", i + 1); - /* Press <num> for <name>, [ extension <ext> ] */ - res = ast_streamfile(chan, "dir-multi1", chan->language) || - ast_waitstream(chan, AST_DIGIT_ANY) || - ast_streamfile(chan, buf, chan->language) || - ast_waitstream(chan, AST_DIGIT_ANY) || - ast_streamfile(chan, "dir-multi2", chan->language) || - ast_waitstream(chan, AST_DIGIT_ANY) || - play_mailbox_owner(chan, context, items[i].exten, items[i].name, flags) || - ast_waitstream(chan, AST_DIGIT_ANY) || - ast_waitfordigit(chan, 800); - if (res) - break; - } - /* Press "9" for more names. */ - if (!res) - res = ast_waitstream(chan, AST_DIGIT_ANY) || - (itemcount == 8 && ast_streamfile(chan, "dir-multi9", chan->language)) || - ast_waitstream(chan, AST_DIGIT_ANY) || - ast_waitfordigit(chan, 3000); - - if (res && res > '0' && res < '9') { - if (ast_test_flag(flags, OPT_FROMVOICEMAIL)) { - /* We still want to set the exten */ - ast_copy_string(chan->exten, items[res - '0'].exten, sizeof(chan->exten)); - } else if (ast_goto_if_exists(chan, dialcontext, items[res - '1'].exten, 1)) { - ast_log(LOG_WARNING, - "Can't find extension '%s' in context '%s'. " - "Did you pass the wrong context to Directory?\n", - items[res - '0'].exten, dialcontext); - res = -1; + + for (block = items; count; block += limit, count -= limit) { + limit = count; + if (limit > 8) + limit = 8; + + for (i = 0; i < limit && !res; i++) { + item = block[i]; + + snprintf(buf, sizeof(buf), "digits/%d", i + 1); + /* Press <num> for <name>, [ extension <ext> ] */ + res = ast_streamfile(chan, "dir-multi1", chan->language); + if (!res) + res = ast_waitstream(chan, AST_DIGIT_ANY); + if (!res) + res = ast_streamfile(chan, buf, chan->language); + if (!res) + res = ast_waitstream(chan, AST_DIGIT_ANY); + if (!res) + res = ast_streamfile(chan, "dir-multi2", chan->language); + if (!res) + res = ast_waitstream(chan, AST_DIGIT_ANY); + if (!res) + res = play_mailbox_owner(chan, context, item->exten, item->name, flags); + if (!res) + res = ast_waitstream(chan, AST_DIGIT_ANY); + if (!res) + res = ast_waitfordigit(chan, 800); } + + /* Press "9" for more names. */ + if (!res && count > limit) { + res = ast_streamfile(chan, "dir-multi9", chan->language); + if (!res) + res = ast_waitstream(chan, AST_DIGIT_ANY); + } + + if (!res) { + res = ast_waitfordigit(chan, 3000); + } + + if (res && res > '0' && res < '1' + limit) { + return select_entry(chan, context, dialcontext, block[res - '1'], flags) ? -1 : 1; + } + + if (res < 0) + return -1; + + res = 0; } - return res; + + /* Nothing was selected */ + return 0; } static struct ast_config *realtime_directory(char *context) @@ -473,18 +515,148 @@ static struct ast_config *realtime_directory(char *context) return cfg; } -static int do_directory(struct ast_channel *chan, struct ast_config *vmcfg, struct ast_config *ucfg, char *context, char *dialcontext, char digit, struct ast_flags *flags) +static int check_match(struct directory_item **result, const char *item_fullname, const char *item_ext, const char *pattern_ext, int use_first_name) +{ + struct directory_item *item; + const char *key = NULL; + int namelen; + + + /* Set key to last name or first name depending on search mode */ + if (!use_first_name) + key = strchr(item_fullname, ' '); + + if (key) + key++; + else + key = item_fullname; + + if (compare(key, pattern_ext)) + return 0; + + /* Match */ + item = ast_calloc(1, sizeof(*item)); + if (!item) + return -1; + ast_copy_string(item->name, item_fullname, sizeof(item->name)); + ast_copy_string(item->exten, item_ext, sizeof(item->exten)); + + ast_copy_string(item->key, key, sizeof(item->key)); + if (key != item_fullname) { + /* Key is the last name. Append first name to key in order to sort Last,First */ + namelen = key - item_fullname - 1; + if (namelen > sizeof(item->key) - strlen(item->key) - 1) + namelen = sizeof(item->key) - strlen(item->key) - 1; + strncat(item->key, item_fullname, namelen); + } + + *result = item; + return 1; +} + +typedef AST_LIST_HEAD_NOLOCK(, directory_item) itemlist; + +static int search_directory(const char *context, struct ast_config *vmcfg, struct ast_config *ucfg, const char *ext, int use_first_name, itemlist *alist) { - /* Read in the first three digits.. "digit" is the first digit, already read */ - char ext[NUMDIGITS + 1], *cat; - char name[80] = ""; struct ast_variable *v; + char buf[AST_MAX_EXTENSION + 1], *pos, *bufptr, *cat; + struct directory_item *item; int res; - int found=0; - int lastuserchoice = 0; - char *start, *conv = NULL, *stringp = NULL; - char *pos; - int breakout = 0; + + ast_debug(2, "Pattern: %s\n", ext); + + for (v = ast_variable_browse(vmcfg, context); v; v = v->next) { + + /* Ignore hidden */ + if (strcasestr(v->value, "hidefromdir=yes")) + continue; + + ast_copy_string(buf, v->value, sizeof(buf)); + bufptr = buf; + + /* password,Full Name,email,pager,options */ + strsep(&bufptr, ","); + pos = strsep(&bufptr, ","); + + res = check_match(&item, pos, v->name, ext, use_first_name); + if (!res) + continue; + else if (res < 0) + return -1; + + AST_LIST_INSERT_TAIL(alist, item, entry); + } + + + if (ucfg) { + for (cat = ast_category_browse(ucfg, NULL); cat ; cat = ast_category_browse(ucfg, cat)) { + const char *pos; + if (!strcasecmp(cat, "general")) + continue; + if (!ast_true(ast_config_option(ucfg, cat, "hasdirectory"))) + continue; + + /* Find all candidate extensions */ + pos = ast_variable_retrieve(ucfg, cat, "fullname"); + if (!pos) + continue; + + res = check_match(&item, pos, cat, ext, use_first_name); + if (!res) + continue; + else if (res < 0) + return -1; + + AST_LIST_INSERT_TAIL(alist, item, entry); + } + } + + return 0; +} + +static void sort_items(struct directory_item **sorted, int count) +{ + int reordered, i; + struct directory_item **ptr, *tmp; + + if (count < 2) + return; + + /* Bubble-sort items by the key */ + do { + reordered = 0; + for (ptr = sorted, i = 0; i < count - 1; i++, ptr++) { + if (strcasecmp(ptr[0]->key, ptr[1]->key) > 0) { + tmp = ptr[0]; + ptr[0] = ptr[1]; + ptr[1] = tmp; + reordered++; + } + } + } while (reordered); +} + +static int goto_exten(struct ast_channel *chan, const char *dialcontext, char *ext) +{ + if (!ast_goto_if_exists(chan, dialcontext, ext, 1) || + (!ast_strlen_zero(chan->macrocontext) && + !ast_goto_if_exists(chan, chan->macrocontext, ext, 1))) { + return 0; + } else { + ast_log(LOG_WARNING, "Can't find extension '%s' in current context. " + "Not Exiting the Directory!\n", ext); + return -1; + } +} + +static int do_directory(struct ast_channel *chan, struct ast_config *vmcfg, struct ast_config *ucfg, char *context, char *dialcontext, char digit, struct ast_flags *flags) +{ + /* Read in the first three digits.. "digit" is the first digit, already read */ + int res = 0; + itemlist alist = AST_LIST_HEAD_NOLOCK_INIT_VALUE; + struct directory_item *item, **ptr, **sorted = NULL; + int count, i; + char ext[NUMDIGITS + 1] = ""; if (ast_strlen_zero(context)) { ast_log(LOG_WARNING, @@ -492,263 +664,72 @@ static int do_directory(struct ast_channel *chan, struct ast_config *vmcfg, stru "(context in which to interpret extensions)\n"); return -1; } - if (digit == '0') { - if (!ast_goto_if_exists(chan, dialcontext, "o", 1) || - (!ast_strlen_zero(chan->macrocontext) && - !ast_goto_if_exists(chan, chan->macrocontext, "o", 1))) { - return 0; - } else { - ast_log(LOG_WARNING, "Can't find extension 'o' in current context. " - "Not Exiting the Directory!\n"); - res = 0; - } + + if (digit == '0' && !goto_exten(chan, dialcontext, "o")) { + return 0; } - if (digit == '*') { - if (!ast_goto_if_exists(chan, dialcontext, "a", 1) || - (!ast_strlen_zero(chan->macrocontext) && - !ast_goto_if_exists(chan, chan->macrocontext, "a", 1))) { - return 0; - } else { - ast_log(LOG_WARNING, "Can't find extension 'a' in current context. " - "Not Exiting the Directory!\n"); - res = 0; - } + + if (digit == '*' && !goto_exten(chan, dialcontext, "a")) { + return 0; } - memset(ext, 0, sizeof(ext)); + ext[0] = digit; - res = 0; - if (ast_readstring(chan, ext + 1, NUMDIGITS - 1, 3000, 3000, "#") < 0) res = -1; - if (!res) { - if (ast_test_flag(flags, OPT_SELECTFROMMENU)) { - char buf[AST_MAX_EXTENSION + 1], *bufptr, *fullname; - struct items menuitems[8]; - int menucount = 0; - for (v = ast_variable_browse(vmcfg, context); v; v = v->next) { - if (strcasestr(v->value, "hidefromdir=yes") == NULL) { - ast_copy_string(buf, v->value, sizeof(buf)); - bufptr = buf; - /* password,Full Name,email,pager,options */ - strsep(&bufptr, ","); - pos = strsep(&bufptr, ","); - fullname = pos; - - if (ast_test_flag(flags, OPT_LISTBYFIRSTNAME) && strrchr(pos, ' ')) - pos = strrchr(pos, ' ') + 1; - conv = convert(pos); - - if (conv && strcmp(conv, ext) == 0) { - /* Match */ - found = 1; - ast_copy_string(menuitems[menucount].name, fullname, sizeof(menuitems[0].name)); - ast_copy_string(menuitems[menucount].exten, v->name, sizeof(menuitems[0].exten)); - menucount++; - } - - if (menucount == 8) { - /* We have a full menu */ - res = select_item(chan, menuitems, menucount, context, dialcontext, flags); - menucount = 0; - if (res != '9' && res != 0) { - if (res != -1) - lastuserchoice = res; - break; - } - } - } - } + if (ast_readstring(chan, ext + 1, NUMDIGITS - 1, 3000, 3000, "#") < 0) + return -1; - if (menucount > 0) { - /* We have a partial menu left over */ - res = select_item(chan, menuitems, menucount, context, dialcontext, flags); - if (res != '9') { - if (res != -1) - lastuserchoice = res; - } - } + res = search_directory(context, vmcfg, ucfg, ext, ast_test_flag(flags, OPT_LISTBYFIRSTNAME), &alist); + if (res) + goto exit; - /* Make this flag conform to the old expected result */ - if (lastuserchoice > '1' && lastuserchoice < '9') - lastuserchoice = '1'; - } else { - /* Search for all names which start with those digits */ - v = ast_variable_browse(vmcfg, context); - while(v && !res) { - /* Find all candidate extensions */ - while(v) { - /* Find a candidate extension */ - start = ast_strdup(v->value); - if (start && !strcasestr(start, "hidefromdir=yes")) { - stringp=start; - strsep(&stringp, ","); - pos = strsep(&stringp, ","); - if (pos) { - ast_copy_string(name, pos, sizeof(name)); - /* Grab the last name */ - if (!ast_test_flag(flags, OPT_LISTBYFIRSTNAME) && strrchr(pos,' ')) - pos = strrchr(pos, ' ') + 1; - conv = convert(pos); - if (conv) { - if (!strncmp(conv, ext, strlen(ext))) { - /* Match! */ - found++; - ast_free(conv); - ast_free(start); - break; - } - ast_free(conv); - } - } - ast_free(start); - } - v = v->next; - } + /* Count items in the list */ + count = 0; + AST_LIST_TRAVERSE(&alist, item, entry) { + count++; + } - if (v) { - /* We have a match -- play a greeting if they have it */ - res = get_mailbox_response(chan, context, dialcontext, v->name, name, flags); - switch (res) { - case -1: - /* user pressed '1' but extension does not exist, or - * user hungup - */ - lastuserchoice = 0; - break; - case '1': - /* user pressed '1' and extensions exists; - get_mailbox_response will already have done - a goto() on the channel - */ - lastuserchoice = res; - break; - case '*': - /* user pressed '*' to skip something found */ - lastuserchoice = res; - res = 0; - break; - default: - break; - } - v = v->next; - } - } - } + if (count < 1) { + res = ast_streamfile(chan, "dir-nomatch", chan->language); + goto exit; + } - if (!res && ucfg) { - /* Search users.conf for all names which start with those digits */ - if (ast_test_flag(flags, OPT_SELECTFROMMENU)) { - char *fullname = NULL; - struct items menuitems[8]; - int menucount = 0; - for (cat = ast_category_browse(ucfg, NULL); cat && !res ; cat = ast_category_browse(ucfg, cat)) { - const char *pos; - if (!strcasecmp(cat, "general")) - continue; - if (!ast_true(ast_config_option(ucfg, cat, "hasdirectory"))) - continue; - - /* Find all candidate extensions */ - if ((pos = ast_variable_retrieve(ucfg, cat, "fullname"))) { - ast_copy_string(name, pos, sizeof(name)); - /* Grab the last name */ - if (!ast_test_flag(flags, OPT_LISTBYFIRSTNAME) && strrchr(pos,' ')) - pos = strrchr(pos, ' ') + 1; - conv = convert(pos); - if (conv && strcmp(conv, ext) == 0) { - /* Match */ - found = 1; - ast_copy_string(menuitems[menucount].name, fullname, sizeof(menuitems[0].name)); - ast_copy_string(menuitems[menucount].exten, v->name, sizeof(menuitems[0].exten)); - menucount++; - - if (menucount == 8) { - /* We have a full menu */ - res = select_item(chan, menuitems, menucount, context, dialcontext, flags); - menucount = 0; - if (res != '9' && res != 0) { - if (res != -1) - lastuserchoice = res; - break; - } - } - } - } - } - if (menucount > 0) { - /* We have a partial menu left over */ - res = select_item(chan, menuitems, menucount, context, dialcontext, flags); - if (res != '9') { - if (res != -1) - lastuserchoice = res; - } - } - /* Make this flag conform to the old expected result */ - if (lastuserchoice > '1' && lastuserchoice < '9') - lastuserchoice = '1'; - } else { /* !menu */ - for (cat = ast_category_browse(ucfg, NULL); cat && !res ; cat = ast_category_browse(ucfg, cat)) { - const char *pos; - if (!strcasecmp(cat, "general")) - continue; - if (!ast_true(ast_config_option(ucfg, cat, "hasdirectory"))) - continue; - - /* Find all candidate extensions */ - if ((pos = ast_variable_retrieve(ucfg, cat, "fullname"))) { - ast_copy_string(name, pos, sizeof(name)); - /* Grab the last name */ - if (ast_test_flag(flags, OPT_LISTBYFIRSTNAME) && strrchr(pos,' ')) - pos = strrchr(pos, ' ') + 1; - conv = convert(pos); - if (conv && strcmp(conv, ext) == 0) { - /* Match! */ - found++; - /* We have a match -- play a greeting if they have it */ - res = get_mailbox_response(chan, context, dialcontext, cat, name, flags); - } - switch (res) { - case -1: - /* user pressed '1' but extension does not exist, or - * user hungup - */ - lastuserchoice = 0; - breakout = 1; - break; - case '1': - /* user pressed '1' and extensions exists; - play_mailbox_owner will already have done - a goto() on the channel - */ - lastuserchoice = res; - breakout = 1; - break; - case '*': - /* user pressed '*' to skip something found */ - lastuserchoice = res; - breakout = 0; - res = 0; - break; - default: - breakout = 1; - break; - } - ast_free(conv); - if (breakout) - break; - } else - ast_free(conv); - } - } - } + /* Create plain array of pointers to items (for sorting) */ + sorted = ast_calloc(count, sizeof(*sorted)); - if (lastuserchoice != '1') { - res = ast_streamfile(chan, found ? "dir-nomore" : "dir-nomatch", chan->language); - if (!res) - res = 1; - return res; + ptr = sorted; + AST_LIST_TRAVERSE(&alist, item, entry) { + *ptr++ = item; + } + + /* Sort items */ + sort_items(sorted, count); + + if (option_debug) { + ast_debug(2, "Listing matching entries:\n"); + for (ptr = sorted, i = 0; i < count; i++, ptr++) { + ast_log(LOG_DEBUG, "%s: %s\n", ptr[0]->exten, ptr[0]->name); } - return 0; } + + if (ast_test_flag(flags, OPT_SELECTFROMMENU)) { + /* Offer multiple entries at the same time */ + res = select_item_menu(chan, sorted, count, context, dialcontext, flags); + } else { + /* Offer entries one by one */ + res = select_item_seq(chan, sorted, count, context, dialcontext, flags); + } + + if (!res) { + res = ast_streamfile(chan, "dir-nomore", chan->language); + } + +exit: + if (sorted) + ast_free(sorted); + + while ((item = AST_LIST_REMOVE_HEAD(&alist, entry))) + ast_free(item); + return res; } @@ -804,21 +785,26 @@ static int directory_exec(struct ast_channel *chan, void *data) ast_stopstream(chan); if (!res) res = ast_waitfordigit(chan, 5000); - if (res > 0) { - res = do_directory(chan, cfg, ucfg, args.vmcontext, args.dialcontext, res, &flags); - if (res > 0) { - res = ast_waitstream(chan, AST_DIGIT_ANY); - ast_stopstream(chan); - if (res >= 0) - continue; - } - } - break; + + if (res <= 0) + break; + + res = do_directory(chan, cfg, ucfg, args.vmcontext, args.dialcontext, res, &flags); + if (res) + break; + + res = ast_waitstream(chan, AST_DIGIT_ANY); + ast_stopstream(chan); + + if (res) + break; } + if (ucfg) ast_config_destroy(ucfg); ast_config_destroy(cfg); - return res; + + return res < 0 ? -1 : 0; } static int unload_module(void) |