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- /*
- * Asterisk -- An open source telephony toolkit.
- *
- * Copyright (C) 1999 - 2005, Digium, Inc.
- *
- * Mark Spencer <markster@digium.com>
- *
- * See http://www.asterisk.org for more information about
- * the Asterisk project. Please do not directly contact
- * any of the maintainers of this project for assistance;
- * the project provides a web site, mailing lists and IRC
- * channels for your use.
- *
- * This program is free software, distributed under the terms of
- * the GNU General Public License Version 2. See the LICENSE file
- * at the top of the source tree.
- */
- /*! \file
- *
- * \brief Convenient Application Routines
- *
- * \author Mark Spencer <markster@digium.com>
- */
- /*!
- * Application Skeleton is an example of creating an application for Asterisk.
- * \example app_skel.c
- */
- /*** MODULEINFO
- <support_level>core</support_level>
- ***/
- #include "asterisk.h"
- #ifdef HAVE_SYS_STAT_H
- #include <sys/stat.h>
- #endif
- #include <regex.h> /* for regcomp(3) */
- #include <sys/file.h> /* for flock(2) */
- #include <signal.h> /* for pthread_sigmask(3) */
- #include <stdlib.h> /* for closefrom(3) */
- #include <sys/types.h>
- #include <sys/wait.h> /* for waitpid(2) */
- #ifndef HAVE_CLOSEFROM
- #include <dirent.h> /* for opendir(3) */
- #endif
- #ifdef HAVE_CAP
- #include <sys/capability.h>
- #endif /* HAVE_CAP */
- #include "asterisk/paths.h" /* use ast_config_AST_DATA_DIR */
- #include "asterisk/channel.h"
- #include "asterisk/pbx.h"
- #include "asterisk/file.h"
- #include "asterisk/app.h"
- #include "asterisk/dsp.h"
- #include "asterisk/utils.h"
- #include "asterisk/lock.h"
- #include "asterisk/indications.h"
- #include "asterisk/linkedlists.h"
- #include "asterisk/threadstorage.h"
- #include "asterisk/test.h"
- #include "asterisk/module.h"
- #include "asterisk/astobj2.h"
- #include "asterisk/stasis.h"
- #include "asterisk/stasis_channels.h"
- #include "asterisk/json.h"
- #include "asterisk/format_cache.h"
- AST_THREADSTORAGE_PUBLIC(ast_str_thread_global_buf);
- static pthread_t shaun_of_the_dead_thread = AST_PTHREADT_NULL;
- struct zombie {
- pid_t pid;
- AST_LIST_ENTRY(zombie) list;
- };
- static AST_LIST_HEAD_STATIC(zombies, zombie);
- #ifdef HAVE_CAP
- static cap_t child_cap;
- #endif
- /*!
- * \brief Define \ref stasis topic objects
- * @{
- */
- static struct stasis_topic *queue_topic_all;
- static struct stasis_topic_pool *queue_topic_pool;
- /*! @} */
- static void *shaun_of_the_dead(void *data)
- {
- struct zombie *cur;
- int status;
- for (;;) {
- if (!AST_LIST_EMPTY(&zombies)) {
- /* Don't allow cancellation while we have a lock. */
- pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
- AST_LIST_LOCK(&zombies);
- AST_LIST_TRAVERSE_SAFE_BEGIN(&zombies, cur, list) {
- if (waitpid(cur->pid, &status, WNOHANG) != 0) {
- AST_LIST_REMOVE_CURRENT(list);
- ast_free(cur);
- }
- }
- AST_LIST_TRAVERSE_SAFE_END
- AST_LIST_UNLOCK(&zombies);
- pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
- }
- pthread_testcancel();
- /* Wait for 60 seconds, without engaging in a busy loop. */
- ast_poll(NULL, 0, AST_LIST_FIRST(&zombies) ? 5000 : 60000);
- }
- return NULL;
- }
- #define AST_MAX_FORMATS 10
- static AST_RWLIST_HEAD_STATIC(groups, ast_group_info);
- /*!
- * \brief This function presents a dialtone and reads an extension into 'collect'
- * which must be a pointer to a **pre-initialized** array of char having a
- * size of 'size' suitable for writing to. It will collect no more than the smaller
- * of 'maxlen' or 'size' minus the original strlen() of collect digits.
- * \param chan struct.
- * \param context
- * \param collect
- * \param size
- * \param maxlen
- * \param timeout timeout in milliseconds
- */
- int ast_app_dtget(struct ast_channel *chan, const char *context, char *collect, size_t size, int maxlen, int timeout)
- {
- struct ast_tone_zone_sound *ts;
- int res = 0, x = 0;
- if (maxlen > size) {
- maxlen = size;
- }
- if (!timeout) {
- if (ast_channel_pbx(chan) && ast_channel_pbx(chan)->dtimeoutms) {
- timeout = ast_channel_pbx(chan)->dtimeoutms;
- } else {
- timeout = 5000;
- }
- }
- if ((ts = ast_get_indication_tone(ast_channel_zone(chan), "dial"))) {
- res = ast_playtones_start(chan, 0, ts->data, 0);
- ts = ast_tone_zone_sound_unref(ts);
- } else {
- ast_log(LOG_NOTICE, "Huh....? no dial for indications?\n");
- }
- for (x = strlen(collect); x < maxlen; ) {
- res = ast_waitfordigit(chan, timeout);
- if (!ast_ignore_pattern(context, collect)) {
- ast_playtones_stop(chan);
- }
- if (res < 1) {
- break;
- }
- if (res == '#') {
- break;
- }
- collect[x++] = res;
- if (!ast_matchmore_extension(chan, context, collect, 1,
- S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL))) {
- break;
- }
- }
- if (res >= 0) {
- res = ast_exists_extension(chan, context, collect, 1,
- S_COR(ast_channel_caller(chan)->id.number.valid, ast_channel_caller(chan)->id.number.str, NULL)) ? 1 : 0;
- }
- return res;
- }
- enum ast_getdata_result ast_app_getdata(struct ast_channel *c, const char *prompt, char *s, int maxlen, int timeout)
- {
- return ast_app_getdata_terminator(c, prompt, s, maxlen, timeout, NULL);
- }
- enum ast_getdata_result ast_app_getdata_terminator(struct ast_channel *c, const char *prompt, char *s,
- int maxlen, int timeout, char *terminator)
- {
- int res = 0, to, fto;
- char *front, *filename;
- /* XXX Merge with full version? XXX */
- if (maxlen)
- s[0] = '\0';
- if (!prompt)
- prompt = "";
- filename = ast_strdupa(prompt);
- while ((front = ast_strsep(&filename, '&', AST_STRSEP_STRIP | AST_STRSEP_TRIM))) {
- if (!ast_strlen_zero(front)) {
- res = ast_streamfile(c, front, ast_channel_language(c));
- if (res)
- continue;
- }
- if (ast_strlen_zero(filename)) {
- /* set timeouts for the last prompt */
- fto = ast_channel_pbx(c) ? ast_channel_pbx(c)->rtimeoutms : 6000;
- to = ast_channel_pbx(c) ? ast_channel_pbx(c)->dtimeoutms : 2000;
- if (timeout > 0) {
- fto = to = timeout;
- }
- if (timeout < 0) {
- fto = to = 1000000000;
- }
- } else {
- /* there is more than one prompt, so
- * get rid of the long timeout between
- * prompts, and make it 50ms */
- fto = 50;
- to = ast_channel_pbx(c) ? ast_channel_pbx(c)->dtimeoutms : 2000;
- }
- res = ast_readstring(c, s, maxlen, to, fto, (terminator ? terminator : "#"));
- if (res == AST_GETDATA_EMPTY_END_TERMINATED) {
- return res;
- }
- if (!ast_strlen_zero(s)) {
- return res;
- }
- }
- return res;
- }
- /* The lock type used by ast_lock_path() / ast_unlock_path() */
- static enum AST_LOCK_TYPE ast_lock_type = AST_LOCK_TYPE_LOCKFILE;
- int ast_app_getdata_full(struct ast_channel *c, const char *prompt, char *s, int maxlen, int timeout, int audiofd, int ctrlfd)
- {
- int res, to = 2000, fto = 6000;
- if (!ast_strlen_zero(prompt)) {
- res = ast_streamfile(c, prompt, ast_channel_language(c));
- if (res < 0) {
- return res;
- }
- }
- if (timeout > 0) {
- fto = to = timeout;
- }
- if (timeout < 0) {
- fto = to = 1000000000;
- }
- res = ast_readstring_full(c, s, maxlen, to, fto, "#", audiofd, ctrlfd);
- return res;
- }
- /* BUGBUG this is not thread safe. */
- static const struct ast_app_stack_funcs *app_stack_callbacks;
- void ast_install_stack_functions(const struct ast_app_stack_funcs *funcs)
- {
- app_stack_callbacks = funcs;
- }
- const char *ast_app_expand_sub_args(struct ast_channel *chan, const char *args)
- {
- const struct ast_app_stack_funcs *funcs;
- const char *new_args;
- funcs = app_stack_callbacks;
- if (!funcs || !funcs->expand_sub_args || !ast_module_running_ref(funcs->module)) {
- ast_log(LOG_WARNING,
- "Cannot expand 'Gosub(%s)' arguments. The app_stack module is not available.\n",
- args);
- return NULL;
- }
- new_args = funcs->expand_sub_args(chan, args);
- ast_module_unref(funcs->module);
- return new_args;
- }
- int ast_app_exec_sub(struct ast_channel *autoservice_chan, struct ast_channel *sub_chan, const char *sub_args, int ignore_hangup)
- {
- const struct ast_app_stack_funcs *funcs;
- int res;
- funcs = app_stack_callbacks;
- if (!funcs || !funcs->run_sub || !ast_module_running_ref(funcs->module)) {
- ast_log(LOG_WARNING,
- "Cannot run 'Gosub(%s)'. The app_stack module is not available.\n",
- sub_args);
- return -1;
- }
- if (autoservice_chan) {
- ast_autoservice_start(autoservice_chan);
- }
- res = funcs->run_sub(sub_chan, sub_args, ignore_hangup);
- ast_module_unref(funcs->module);
- if (autoservice_chan) {
- ast_autoservice_stop(autoservice_chan);
- }
- if (!ignore_hangup && ast_check_hangup_locked(sub_chan)) {
- ast_queue_hangup(sub_chan);
- }
- return res;
- }
- int ast_app_run_sub(struct ast_channel *autoservice_chan, struct ast_channel *sub_chan, const char *sub_location, const char *sub_args, int ignore_hangup)
- {
- int res;
- char *args_str;
- size_t args_len;
- if (ast_strlen_zero(sub_args)) {
- return ast_app_exec_sub(autoservice_chan, sub_chan, sub_location, ignore_hangup);
- }
- /* Create the Gosub application argument string. */
- args_len = strlen(sub_location) + strlen(sub_args) + 3;
- args_str = ast_malloc(args_len);
- if (!args_str) {
- return -1;
- }
- snprintf(args_str, args_len, "%s(%s)", sub_location, sub_args);
- res = ast_app_exec_sub(autoservice_chan, sub_chan, args_str, ignore_hangup);
- ast_free(args_str);
- return res;
- }
- /*! \brief The container for the voicemail provider */
- static AO2_GLOBAL_OBJ_STATIC(vm_provider);
- /*! Voicemail not registered warning */
- static int vm_warnings;
- int ast_vm_is_registered(void)
- {
- struct ast_vm_functions *table;
- int is_registered;
- table = ao2_global_obj_ref(vm_provider);
- is_registered = table ? 1 : 0;
- ao2_cleanup(table);
- return is_registered;
- }
- int __ast_vm_register(const struct ast_vm_functions *vm_table, struct ast_module *module)
- {
- RAII_VAR(struct ast_vm_functions *, table, NULL, ao2_cleanup);
- if (!vm_table->module_name) {
- ast_log(LOG_ERROR, "Voicemail provider missing required information.\n");
- return -1;
- }
- if (vm_table->module_version != VM_MODULE_VERSION) {
- ast_log(LOG_ERROR, "Voicemail provider '%s' has incorrect version\n",
- vm_table->module_name);
- return -1;
- }
- table = ao2_global_obj_ref(vm_provider);
- if (table) {
- ast_log(LOG_WARNING, "Voicemail provider already registered by %s.\n",
- table->module_name);
- return AST_MODULE_LOAD_DECLINE;
- }
- table = ao2_alloc_options(sizeof(*table), NULL, AO2_ALLOC_OPT_LOCK_NOLOCK);
- if (!table) {
- return -1;
- }
- *table = *vm_table;
- table->module = module;
- ao2_global_obj_replace_unref(vm_provider, table);
- return 0;
- }
- void ast_vm_unregister(const char *module_name)
- {
- struct ast_vm_functions *table;
- table = ao2_global_obj_ref(vm_provider);
- if (table && !strcmp(table->module_name, module_name)) {
- ao2_global_obj_release(vm_provider);
- }
- ao2_cleanup(table);
- }
- #ifdef TEST_FRAMEWORK
- /*! \brief Holding container for the voicemail provider used while testing */
- static AO2_GLOBAL_OBJ_STATIC(vm_provider_holder);
- static int provider_is_swapped = 0;
- void ast_vm_test_swap_table_in(const struct ast_vm_functions *vm_table)
- {
- RAII_VAR(struct ast_vm_functions *, holding_table, NULL, ao2_cleanup);
- RAII_VAR(struct ast_vm_functions *, new_table, NULL, ao2_cleanup);
- if (provider_is_swapped) {
- ast_log(LOG_ERROR, "Attempted to swap in test function table without swapping out old test table.\n");
- return;
- }
- holding_table = ao2_global_obj_ref(vm_provider);
- if (holding_table) {
- ao2_global_obj_replace_unref(vm_provider_holder, holding_table);
- }
- new_table = ao2_alloc_options(sizeof(*new_table), NULL, AO2_ALLOC_OPT_LOCK_NOLOCK);
- if (!new_table) {
- return;
- }
- *new_table = *vm_table;
- ao2_global_obj_replace_unref(vm_provider, new_table);
- provider_is_swapped = 1;
- }
- void ast_vm_test_swap_table_out(void)
- {
- RAII_VAR(struct ast_vm_functions *, held_table, NULL, ao2_cleanup);
- if (!provider_is_swapped) {
- ast_log(LOG_ERROR, "Attempted to swap out test function table, but none is currently installed.\n");
- return;
- }
- held_table = ao2_global_obj_ref(vm_provider_holder);
- if (!held_table) {
- return;
- }
- ao2_global_obj_replace_unref(vm_provider, held_table);
- ao2_global_obj_release(vm_provider_holder);
- provider_is_swapped = 0;
- }
- #endif
- /*! \brief The container for the voicemail greeter provider */
- static AO2_GLOBAL_OBJ_STATIC(vm_greeter_provider);
- /*! Voicemail greeter not registered warning */
- static int vm_greeter_warnings;
- int ast_vm_greeter_is_registered(void)
- {
- struct ast_vm_greeter_functions *table;
- int is_registered;
- table = ao2_global_obj_ref(vm_greeter_provider);
- is_registered = table ? 1 : 0;
- ao2_cleanup(table);
- return is_registered;
- }
- int __ast_vm_greeter_register(const struct ast_vm_greeter_functions *vm_table, struct ast_module *module)
- {
- RAII_VAR(struct ast_vm_greeter_functions *, table, NULL, ao2_cleanup);
- if (!vm_table->module_name) {
- ast_log(LOG_ERROR, "Voicemail greeter provider missing required information.\n");
- return -1;
- }
- if (vm_table->module_version != VM_GREETER_MODULE_VERSION) {
- ast_log(LOG_ERROR, "Voicemail greeter provider '%s' has incorrect version\n",
- vm_table->module_name);
- return -1;
- }
- table = ao2_global_obj_ref(vm_greeter_provider);
- if (table) {
- ast_log(LOG_WARNING, "Voicemail greeter provider already registered by %s.\n",
- table->module_name);
- return AST_MODULE_LOAD_DECLINE;
- }
- table = ao2_alloc_options(sizeof(*table), NULL, AO2_ALLOC_OPT_LOCK_NOLOCK);
- if (!table) {
- return -1;
- }
- *table = *vm_table;
- table->module = module;
- ao2_global_obj_replace_unref(vm_greeter_provider, table);
- return 0;
- }
- void ast_vm_greeter_unregister(const char *module_name)
- {
- struct ast_vm_greeter_functions *table;
- table = ao2_global_obj_ref(vm_greeter_provider);
- if (table && !strcmp(table->module_name, module_name)) {
- ao2_global_obj_release(vm_greeter_provider);
- }
- ao2_cleanup(table);
- }
- #ifdef TEST_FRAMEWORK
- static ast_vm_test_create_user_fn *ast_vm_test_create_user_func = NULL;
- static ast_vm_test_destroy_user_fn *ast_vm_test_destroy_user_func = NULL;
- void ast_install_vm_test_functions(ast_vm_test_create_user_fn *vm_test_create_user_func,
- ast_vm_test_destroy_user_fn *vm_test_destroy_user_func)
- {
- ast_vm_test_create_user_func = vm_test_create_user_func;
- ast_vm_test_destroy_user_func = vm_test_destroy_user_func;
- }
- void ast_uninstall_vm_test_functions(void)
- {
- ast_vm_test_create_user_func = NULL;
- ast_vm_test_destroy_user_func = NULL;
- }
- #endif
- static void vm_warn_no_provider(void)
- {
- if (vm_warnings++ % 10 == 0) {
- ast_verb(3, "No voicemail provider registered.\n");
- }
- }
- #define VM_API_CALL(res, api_call, api_parms) \
- do { \
- struct ast_vm_functions *table; \
- table = ao2_global_obj_ref(vm_provider); \
- if (!table) { \
- vm_warn_no_provider(); \
- } else if (table->api_call) { \
- ast_module_ref(table->module); \
- (res) = table->api_call api_parms; \
- ast_module_unref(table->module); \
- } \
- ao2_cleanup(table); \
- } while (0)
- static void vm_greeter_warn_no_provider(void)
- {
- if (vm_greeter_warnings++ % 10 == 0) {
- ast_verb(3, "No voicemail greeter provider registered.\n");
- }
- }
- #define VM_GREETER_API_CALL(res, api_call, api_parms) \
- do { \
- struct ast_vm_greeter_functions *table; \
- table = ao2_global_obj_ref(vm_greeter_provider); \
- if (!table) { \
- vm_greeter_warn_no_provider(); \
- } else if (table->api_call) { \
- ast_module_ref(table->module); \
- (res) = table->api_call api_parms; \
- ast_module_unref(table->module); \
- } \
- ao2_cleanup(table); \
- } while (0)
- int ast_app_has_voicemail(const char *mailboxes, const char *folder)
- {
- int res = 0;
- VM_API_CALL(res, has_voicemail, (mailboxes, folder));
- return res;
- }
- /*!
- * \internal
- * \brief Function used as a callback for ast_copy_recording_to_vm when a real one isn't installed.
- * \param vm_rec_data Stores crucial information about the voicemail that will basically just be used
- * to figure out what the name of the recipient was supposed to be
- */
- int ast_app_copy_recording_to_vm(struct ast_vm_recording_data *vm_rec_data)
- {
- int res = -1;
- VM_API_CALL(res, copy_recording_to_vm, (vm_rec_data));
- return res;
- }
- int ast_app_inboxcount(const char *mailboxes, int *newmsgs, int *oldmsgs)
- {
- int res = 0;
- if (newmsgs) {
- *newmsgs = 0;
- }
- if (oldmsgs) {
- *oldmsgs = 0;
- }
- VM_API_CALL(res, inboxcount, (mailboxes, newmsgs, oldmsgs));
- return res;
- }
- int ast_app_inboxcount2(const char *mailboxes, int *urgentmsgs, int *newmsgs, int *oldmsgs)
- {
- int res = 0;
- if (newmsgs) {
- *newmsgs = 0;
- }
- if (oldmsgs) {
- *oldmsgs = 0;
- }
- if (urgentmsgs) {
- *urgentmsgs = 0;
- }
- VM_API_CALL(res, inboxcount2, (mailboxes, urgentmsgs, newmsgs, oldmsgs));
- return res;
- }
- int ast_app_sayname(struct ast_channel *chan, const char *mailbox_id)
- {
- int res = -1;
- VM_GREETER_API_CALL(res, sayname, (chan, mailbox_id));
- return res;
- }
- int ast_app_messagecount(const char *mailbox_id, const char *folder)
- {
- int res = 0;
- VM_API_CALL(res, messagecount, (mailbox_id, folder));
- return res;
- }
- const char *ast_vm_index_to_foldername(int id)
- {
- const char *res = NULL;
- VM_API_CALL(res, index_to_foldername, (id));
- return res;
- }
- struct ast_vm_mailbox_snapshot *ast_vm_mailbox_snapshot_create(const char *mailbox,
- const char *context,
- const char *folder,
- int descending,
- enum ast_vm_snapshot_sort_val sort_val,
- int combine_INBOX_and_OLD)
- {
- struct ast_vm_mailbox_snapshot *res = NULL;
- VM_API_CALL(res, mailbox_snapshot_create, (mailbox, context, folder, descending,
- sort_val, combine_INBOX_and_OLD));
- return res;
- }
- struct ast_vm_mailbox_snapshot *ast_vm_mailbox_snapshot_destroy(struct ast_vm_mailbox_snapshot *mailbox_snapshot)
- {
- struct ast_vm_mailbox_snapshot *res = NULL;
- VM_API_CALL(res, mailbox_snapshot_destroy, (mailbox_snapshot));
- return res;
- }
- int ast_vm_msg_move(const char *mailbox,
- const char *context,
- size_t num_msgs,
- const char *oldfolder,
- const char *old_msg_ids[],
- const char *newfolder)
- {
- int res = 0;
- VM_API_CALL(res, msg_move, (mailbox, context, num_msgs, oldfolder, old_msg_ids,
- newfolder));
- return res;
- }
- int ast_vm_msg_remove(const char *mailbox,
- const char *context,
- size_t num_msgs,
- const char *folder,
- const char *msgs[])
- {
- int res = 0;
- VM_API_CALL(res, msg_remove, (mailbox, context, num_msgs, folder, msgs));
- return res;
- }
- int ast_vm_msg_forward(const char *from_mailbox,
- const char *from_context,
- const char *from_folder,
- const char *to_mailbox,
- const char *to_context,
- const char *to_folder,
- size_t num_msgs,
- const char *msg_ids[],
- int delete_old)
- {
- int res = 0;
- VM_API_CALL(res, msg_forward, (from_mailbox, from_context, from_folder, to_mailbox,
- to_context, to_folder, num_msgs, msg_ids, delete_old));
- return res;
- }
- int ast_vm_msg_play(struct ast_channel *chan,
- const char *mailbox,
- const char *context,
- const char *folder,
- const char *msg_num,
- ast_vm_msg_play_cb *cb)
- {
- int res = 0;
- VM_API_CALL(res, msg_play, (chan, mailbox, context, folder, msg_num, cb));
- return res;
- }
- #ifdef TEST_FRAMEWORK
- int ast_vm_test_create_user(const char *context, const char *mailbox)
- {
- if (ast_vm_test_create_user_func) {
- return ast_vm_test_create_user_func(context, mailbox);
- }
- return 0;
- }
- int ast_vm_test_destroy_user(const char *context, const char *mailbox)
- {
- if (ast_vm_test_destroy_user_func) {
- return ast_vm_test_destroy_user_func(context, mailbox);
- }
- return 0;
- }
- #endif
- static int external_sleep(struct ast_channel *chan, int ms)
- {
- usleep(ms * 1000);
- return 0;
- }
- static int sf_stream(struct ast_channel *chan, struct ast_channel *chan2, const char *digits, int frequency, int is_external)
- {
- /* Bell System Technical Journal 39 (Nov. 1960) */
- #define SF_ON 67
- #define SF_OFF 33
- #define SF_BETWEEN 600
- const char *ptr;
- int res;
- struct ast_silence_generator *silgen = NULL, *silgen2 = NULL;
- char *freq;
- int (*my_sleep)(struct ast_channel *chan, int ms);
- if (frequency >= 100000) {
- ast_log(LOG_WARNING, "Frequency too large: %d\n", frequency);
- return -1;
- }
- if (is_external) {
- my_sleep = external_sleep;
- } else {
- my_sleep = ast_safe_sleep;
- }
- /* Need a quiet time before sending digits. */
- if (ast_opt_transmit_silence) {
- silgen = ast_channel_start_silence_generator(chan);
- if (chan2) {
- silgen2 = ast_channel_start_silence_generator(chan2);
- }
- }
- if (chan2) {
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 100);
- if (chan2) {
- ast_autoservice_stop(chan2);
- }
- if (res) {
- goto sf_stream_cleanup;
- }
- /* len(SF_ON) + len(SF_OFF) + len(0) + maxlen(frequency) + /,/ + null terminator = 2 + 2 + 1 + 5 at most + 3 + 1 = 14 */
- #define SF_BUF_LEN 20
- freq = ast_alloca(SF_BUF_LEN); /* min 20 to avoid compiler warning about insufficient buffer */
- /* pauses need to send audio, so send 0 Hz */
- snprintf(freq, SF_BUF_LEN, "%d/%d,%d/%d", frequency, SF_ON, 0, SF_OFF);
- for (ptr = digits; *ptr; ptr++) {
- if (*ptr == 'w') {
- /* 'w' -- wait half a second */
- if (chan2) {
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 500);
- if (chan2) {
- ast_autoservice_stop(chan2);
- }
- if (res) {
- break;
- }
- } else if (*ptr == 'h' || *ptr == 'H') {
- /* 'h' -- 2600 Hz for half a second, but
- only to far end of trunk, not near end */
- ast_playtones_start(chan, 0, "2600", 0);
- if (chan2) {
- ast_playtones_start(chan2, 0, "0", 0);
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 250);
- ast_senddigit_mf_end(chan);
- if (chan2) {
- ast_autoservice_stop(chan2);
- ast_senddigit_mf_end(chan2);
- }
- if (res) {
- break;
- }
- } else if (strchr("0123456789*#ABCDabcdwWfF", *ptr)) {
- if (*ptr == 'f' || *ptr == 'F') {
- /* ignore return values if not supported by channel */
- ast_indicate(chan, AST_CONTROL_FLASH);
- } else if (*ptr == 'W') {
- /* ignore return values if not supported by channel */
- ast_indicate(chan, AST_CONTROL_WINK);
- } else {
- /* Character represents valid SF */
- int beeps;
- if (*ptr == '*') {
- beeps = 11;
- } else if (*ptr == '#') {
- beeps = 12;
- } else if (*ptr == 'D') {
- beeps = 13;
- } else if (*ptr == 'C') {
- beeps = 14;
- } else if (*ptr == 'B') {
- beeps = 15;
- } else if (*ptr == 'A') {
- beeps = 16;
- } else {
- beeps = (*ptr == '0') ? 10 : *ptr - '0';
- }
- while (beeps-- > 0) {
- ast_playtones_start(chan, 0, freq, 0);
- if (chan2) {
- ast_playtones_start(chan2, 0, freq, 0);
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, SF_ON + SF_OFF);
- ast_senddigit_mf_end(chan);
- if (chan2) {
- ast_autoservice_stop(chan2);
- ast_senddigit_mf_end(chan2);
- }
- if (res) {
- break;
- }
- }
- }
- /* pause between digits */
- ast_playtones_start(chan, 0, "0", 0);
- if (chan2) {
- ast_playtones_start(chan2, 0, "0", 0);
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, SF_BETWEEN);
- if (chan2) {
- ast_autoservice_stop(chan2);
- ast_senddigit_mf_end(chan2);
- }
- ast_senddigit_mf_end(chan);
- if (res) {
- break;
- }
- } else {
- ast_log(LOG_WARNING, "Illegal SF character '%c' in string. (0-9A-DwWfFhH allowed)\n", *ptr);
- }
- }
- sf_stream_cleanup:
- if (silgen) {
- ast_channel_stop_silence_generator(chan, silgen);
- }
- if (silgen2) {
- ast_channel_stop_silence_generator(chan2, silgen2);
- }
- return res;
- }
- static int mf_stream(struct ast_channel *chan, struct ast_channel *chan2, const char *digits, int between, unsigned int duration,
- unsigned int durationkp, unsigned int durationst, int is_external)
- {
- const char *ptr;
- int res;
- struct ast_silence_generator *silgen = NULL, *silgen2 = NULL;
- int (*my_sleep)(struct ast_channel *chan, int ms);
- if (is_external) {
- my_sleep = external_sleep;
- } else {
- my_sleep = ast_safe_sleep;
- }
- if (!between) {
- between = 100;
- }
- /* Need a quiet time before sending digits. */
- if (ast_opt_transmit_silence) {
- silgen = ast_channel_start_silence_generator(chan);
- if (chan2) {
- silgen2 = ast_channel_start_silence_generator(chan2);
- }
- }
- if (chan2) {
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 100);
- if (chan2) {
- ast_autoservice_stop(chan2);
- }
- if (res) {
- goto mf_stream_cleanup;
- }
- for (ptr = digits; *ptr; ptr++) {
- if (*ptr == 'w') {
- /* 'w' -- wait half a second */
- if (chan2) {
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 500);
- if (chan2) {
- ast_autoservice_stop(chan2);
- }
- if (res) {
- break;
- }
- } else if (*ptr == 'h' || *ptr == 'H') {
- /* 'h' -- 2600 Hz for half a second, but
- only to far end of trunk, not near end */
- ast_playtones_start(chan, 0, "2600", 0);
- if (chan2) {
- ast_playtones_start(chan2, 0, "0", 0);
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, 250);
- ast_senddigit_mf_end(chan);
- if (chan2) {
- ast_autoservice_stop(chan2);
- ast_senddigit_mf_end(chan2);
- }
- if (res) {
- break;
- }
- } else if (strchr("0123456789*#ABCwWfF", *ptr)) {
- if (*ptr == 'f' || *ptr == 'F') {
- /* ignore return values if not supported by channel */
- ast_indicate(chan, AST_CONTROL_FLASH);
- } else if (*ptr == 'W') {
- /* ignore return values if not supported by channel */
- ast_indicate(chan, AST_CONTROL_WINK);
- } else {
- /* Character represents valid MF */
- ast_senddigit_mf(chan, *ptr, duration, durationkp, durationst, is_external);
- if (chan2) {
- ast_senddigit_mf(chan2, *ptr, duration, durationkp, durationst, is_external);
- }
- }
- /* pause between digits */
- /* The DSP code in Asterisk does not currently properly receive repeated tones
- if no audio is sent in the middle. Simply sending audio (even 0 Hz)
- works around this limitation and guarantees the correct behavior.
- */
- ast_playtones_start(chan, 0, "0", 0);
- if (chan2) {
- ast_playtones_start(chan2, 0, "0", 0);
- ast_autoservice_start(chan2);
- }
- res = my_sleep(chan, between);
- ast_senddigit_mf_end(chan);
- if (chan2) {
- ast_autoservice_stop(chan2);
- ast_senddigit_mf_end(chan2);
- }
- if (res) {
- break;
- }
- } else {
- ast_log(LOG_WARNING, "Illegal MF character '%c' in string. (0-9*#ABCwWfFhH allowed)\n", *ptr);
- }
- }
- mf_stream_cleanup:
- if (silgen) {
- ast_channel_stop_silence_generator(chan, silgen);
- }
- if (silgen2) {
- ast_channel_stop_silence_generator(chan2, silgen2);
- }
- return res;
- }
- static int dtmf_stream(struct ast_channel *chan, const char *digits, int between, unsigned int duration, int is_external)
- {
- const char *ptr;
- int res;
- struct ast_silence_generator *silgen = NULL;
- int (*my_sleep)(struct ast_channel *chan, int ms);
- int (*my_senddigit)(struct ast_channel *chan, char digit, unsigned int duration);
- if (is_external) {
- my_sleep = external_sleep;
- my_senddigit = ast_senddigit_external;
- } else {
- my_sleep = ast_safe_sleep;
- my_senddigit = ast_senddigit;
- }
- if (!between) {
- between = 100;
- }
- /* Need a quiet time before sending digits. */
- if (ast_opt_transmit_silence) {
- silgen = ast_channel_start_silence_generator(chan);
- }
- res = my_sleep(chan, 100);
- if (res) {
- goto dtmf_stream_cleanup;
- }
- for (ptr = digits; *ptr; ptr++) {
- if (*ptr == 'w') {
- /* 'w' -- wait half a second */
- res = my_sleep(chan, 500);
- if (res) {
- break;
- }
- } else if (*ptr == 'W') {
- /* 'W' -- wait a second */
- res = my_sleep(chan, 1000);
- if (res) {
- break;
- }
- } else if (strchr("0123456789*#abcdfABCDF", *ptr)) {
- if (*ptr == 'f' || *ptr == 'F') {
- /* ignore return values if not supported by channel */
- ast_indicate(chan, AST_CONTROL_FLASH);
- } else {
- /* Character represents valid DTMF */
- my_senddigit(chan, *ptr, duration);
- }
- /* pause between digits */
- res = my_sleep(chan, between);
- if (res) {
- break;
- }
- } else {
- ast_log(LOG_WARNING, "Illegal DTMF character '%c' in string. (0-9*#aAbBcCdD allowed)\n", *ptr);
- }
- }
- dtmf_stream_cleanup:
- if (silgen) {
- ast_channel_stop_silence_generator(chan, silgen);
- }
- return res;
- }
- int ast_sf_stream(struct ast_channel *chan, struct ast_channel *peer, struct ast_channel *chan2, const char *digits, int frequency, int is_external)
- {
- int res;
- if (frequency <= 0) {
- frequency = 2600;
- }
- if (!is_external && !chan2 && peer && ast_autoservice_start(peer)) {
- return -1;
- }
- res = sf_stream(chan, chan2, digits, frequency, is_external);
- if (!is_external && !chan2 && peer && ast_autoservice_stop(peer)) {
- res = -1;
- }
- return res;
- }
- int ast_mf_stream(struct ast_channel *chan, struct ast_channel *peer, struct ast_channel *chan2, const char *digits,
- int between, unsigned int duration, unsigned int durationkp, unsigned int durationst, int is_external)
- {
- int res;
- if (!is_external && !chan2 && peer && ast_autoservice_start(peer)) {
- return -1;
- }
- res = mf_stream(chan, chan2, digits, between, duration, durationkp, durationst, is_external);
- if (!is_external && !chan2 && peer && ast_autoservice_stop(peer)) {
- res = -1;
- }
- return res;
- }
- int ast_dtmf_stream(struct ast_channel *chan, struct ast_channel *peer, const char *digits, int between, unsigned int duration)
- {
- int res;
- if (peer && ast_autoservice_start(peer)) {
- return -1;
- }
- res = dtmf_stream(chan, digits, between, duration, 0);
- if (peer && ast_autoservice_stop(peer)) {
- res = -1;
- }
- return res;
- }
- void ast_dtmf_stream_external(struct ast_channel *chan, const char *digits, int between, unsigned int duration)
- {
- dtmf_stream(chan, digits, between, duration, 1);
- }
- struct linear_state {
- int fd;
- int autoclose;
- int allowoverride;
- struct ast_format *origwfmt;
- };
- static void linear_release(struct ast_channel *chan, void *params)
- {
- struct linear_state *ls = params;
- if (ls->origwfmt && ast_set_write_format(chan, ls->origwfmt)) {
- ast_log(LOG_WARNING, "Unable to restore channel '%s' to format '%s'\n",
- ast_channel_name(chan), ast_format_get_name(ls->origwfmt));
- }
- ao2_cleanup(ls->origwfmt);
- if (ls->autoclose) {
- close(ls->fd);
- }
- ast_free(params);
- }
- static int linear_generator(struct ast_channel *chan, void *data, int len, int samples)
- {
- short buf[2048 + AST_FRIENDLY_OFFSET / 2];
- struct linear_state *ls = data;
- struct ast_frame f = {
- .frametype = AST_FRAME_VOICE,
- .data.ptr = buf + AST_FRIENDLY_OFFSET / 2,
- .offset = AST_FRIENDLY_OFFSET,
- };
- int res;
- f.subclass.format = ast_format_slin;
- len = samples * 2;
- if (len > sizeof(buf) - AST_FRIENDLY_OFFSET) {
- ast_log(LOG_WARNING, "Can't generate %d bytes of data!\n" , len);
- len = sizeof(buf) - AST_FRIENDLY_OFFSET;
- }
- res = read(ls->fd, buf + AST_FRIENDLY_OFFSET/2, len);
- if (res > 0) {
- f.datalen = res;
- f.samples = res / 2;
- ast_write(chan, &f);
- if (res == len) {
- return 0;
- }
- }
- return -1;
- }
- static void *linear_alloc(struct ast_channel *chan, void *params)
- {
- struct linear_state *ls = params;
- if (!params) {
- return NULL;
- }
- /* In this case, params is already malloc'd */
- if (ls->allowoverride) {
- ast_set_flag(ast_channel_flags(chan), AST_FLAG_WRITE_INT);
- } else {
- ast_clear_flag(ast_channel_flags(chan), AST_FLAG_WRITE_INT);
- }
- ls->origwfmt = ao2_bump(ast_channel_writeformat(chan));
- if (ast_set_write_format(chan, ast_format_slin)) {
- ast_log(LOG_WARNING, "Unable to set '%s' to linear format (write)\n", ast_channel_name(chan));
- ao2_cleanup(ls->origwfmt);
- ast_free(ls);
- ls = params = NULL;
- }
- return params;
- }
- static struct ast_generator linearstream =
- {
- .alloc = linear_alloc,
- .release = linear_release,
- .generate = linear_generator,
- };
- int ast_linear_stream(struct ast_channel *chan, const char *filename, int fd, int allowoverride)
- {
- struct linear_state *lin;
- char tmpf[256];
- int autoclose = 0;
- if (fd < 0) {
- if (ast_strlen_zero(filename)) {
- return -1;
- }
- autoclose = 1;
- if (filename[0] == '/') {
- ast_copy_string(tmpf, filename, sizeof(tmpf));
- } else {
- snprintf(tmpf, sizeof(tmpf), "%s/%s/%s", ast_config_AST_DATA_DIR, "sounds", filename);
- }
- fd = open(tmpf, O_RDONLY);
- if (fd < 0) {
- ast_log(LOG_WARNING, "Unable to open file '%s': %s\n", tmpf, strerror(errno));
- return -1;
- }
- }
- lin = ast_calloc(1, sizeof(*lin));
- if (!lin) {
- if (autoclose) {
- close(fd);
- }
- return -1;
- }
- lin->fd = fd;
- lin->allowoverride = allowoverride;
- lin->autoclose = autoclose;
- return ast_activate_generator(chan, &linearstream, lin);
- }
- static int control_streamfile(struct ast_channel *chan,
- const char *file,
- const char *fwd,
- const char *rev,
- const char *stop,
- const char *suspend,
- const char *restart,
- int skipms,
- long *offsetms,
- const char *lang,
- ast_waitstream_fr_cb cb)
- {
- char *breaks = NULL;
- char *end = NULL;
- int blen = 2;
- int res;
- long pause_restart_point = 0;
- long offset = 0;
- struct ast_silence_generator *silgen = NULL;
- if (!file) {
- return -1;
- }
- if (offsetms) {
- offset = *offsetms * 8; /* XXX Assumes 8kHz */
- }
- if (lang == NULL) {
- lang = ast_channel_language(chan);
- }
- if (stop) {
- blen += strlen(stop);
- }
- if (suspend) {
- blen += strlen(suspend);
- }
- if (restart) {
- blen += strlen(restart);
- }
- if (blen > 2) {
- breaks = ast_alloca(blen + 1);
- breaks[0] = '\0';
- if (stop) {
- strcat(breaks, stop);
- }
- if (suspend) {
- strcat(breaks, suspend);
- }
- if (restart) {
- strcat(breaks, restart);
- }
- }
- if ((end = strchr(file, ':'))) {
- if (!strcasecmp(end, ":end")) {
- *end = '\0';
- end++;
- } else {
- end = NULL;
- }
- }
- for (;;) {
- ast_stopstream(chan);
- res = ast_streamfile(chan, file, lang);
- if (!res) {
- if (pause_restart_point) {
- ast_seekstream(ast_channel_stream(chan), pause_restart_point, SEEK_SET);
- pause_restart_point = 0;
- }
- else if (end || offset < 0) {
- if (offset == -8) {
- offset = 0;
- }
- ast_verb(3, "ControlPlayback seek to offset %ld from end\n", offset);
- ast_seekstream(ast_channel_stream(chan), offset, SEEK_END);
- end = NULL;
- offset = 0;
- } else if (offset) {
- ast_verb(3, "ControlPlayback seek to offset %ld\n", offset);
- ast_seekstream(ast_channel_stream(chan), offset, SEEK_SET);
- offset = 0;
- }
- if (cb) {
- res = ast_waitstream_fr_w_cb(chan, breaks, fwd, rev, skipms, cb);
- } else {
- res = ast_waitstream_fr(chan, breaks, fwd, rev, skipms);
- }
- }
- if (res < 1) {
- break;
- }
- /* We go at next loop if we got the restart char */
- if ((restart && strchr(restart, res)) || res == AST_CONTROL_STREAM_RESTART) {
- ast_debug(1, "we'll restart the stream here at next loop\n");
- pause_restart_point = 0;
- ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
- "Control: %s\r\n",
- ast_channel_name(chan),
- "Restart");
- continue;
- }
- if ((suspend && strchr(suspend, res)) || res == AST_CONTROL_STREAM_SUSPEND) {
- pause_restart_point = ast_tellstream(ast_channel_stream(chan));
- if (ast_opt_transmit_silence) {
- silgen = ast_channel_start_silence_generator(chan);
- }
- ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
- "Control: %s\r\n",
- ast_channel_name(chan),
- "Pause");
- for (;;) {
- ast_stopstream(chan);
- if (!(res = ast_waitfordigit(chan, 1000))) {
- continue;
- } else if (res == -1 || (suspend && strchr(suspend, res)) || (stop && strchr(stop, res))
- || res == AST_CONTROL_STREAM_SUSPEND || res == AST_CONTROL_STREAM_STOP) {
- break;
- }
- }
- if (silgen) {
- ast_channel_stop_silence_generator(chan, silgen);
- silgen = NULL;
- }
- if ((suspend && (res == *suspend)) || res == AST_CONTROL_STREAM_SUSPEND) {
- res = 0;
- ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
- "Control: %s\r\n",
- ast_channel_name(chan),
- "Unpause");
- continue;
- }
- }
- if (res == -1) {
- break;
- }
- /* if we get one of our stop chars, return it to the calling function */
- if ((stop && strchr(stop, res)) || res == AST_CONTROL_STREAM_STOP) {
- ast_test_suite_event_notify("PLAYBACK","Channel: %s\r\n"
- "Control: %s\r\n",
- ast_channel_name(chan),
- "Stop");
- break;
- }
- }
- if (pause_restart_point) {
- offset = pause_restart_point;
- } else {
- if (ast_channel_stream(chan)) {
- offset = ast_tellstream(ast_channel_stream(chan));
- } else {
- offset = -8; /* indicate end of file */
- }
- }
- if (offsetms) {
- *offsetms = offset / 8; /* samples --> ms ... XXX Assumes 8 kHz */
- }
- ast_stopstream(chan);
- return res;
- }
- int ast_control_streamfile_w_cb(struct ast_channel *chan,
- const char *file,
- const char *fwd,
- const char *rev,
- const char *stop,
- const char *suspend,
- const char *restart,
- int skipms,
- long *offsetms,
- ast_waitstream_fr_cb cb)
- {
- return control_streamfile(chan, file, fwd, rev, stop, suspend, restart, skipms, offsetms, NULL, cb);
- }
- int ast_control_streamfile(struct ast_channel *chan, const char *file,
- const char *fwd, const char *rev,
- const char *stop, const char *suspend,
- const char *restart, int skipms, long *offsetms)
- {
- return control_streamfile(chan, file, fwd, rev, stop, suspend, restart, skipms, offsetms, NULL, NULL);
- }
- int ast_control_streamfile_lang(struct ast_channel *chan, const char *file,
- const char *fwd, const char *rev, const char *stop, const char *suspend,
- const char *restart, int skipms, const char *lang, long *offsetms)
- {
- return control_streamfile(chan, file, fwd, rev, stop, suspend, restart, skipms, offsetms, lang, NULL);
- }
- enum control_tone_frame_response_result {
- CONTROL_TONE_RESPONSE_FAILED = -1,
- CONTROL_TONE_RESPONSE_NORMAL = 0,
- CONTROL_TONE_RESPONSE_FINISHED = 1,
- };
- static enum control_tone_frame_response_result control_tone_frame_response(struct ast_channel *chan, struct ast_frame *fr, struct ast_tone_zone_sound *ts, const char *tone, int *paused)
- {
- switch (fr->subclass.integer) {
- case AST_CONTROL_STREAM_STOP:
- ast_playtones_stop(chan);
- return CONTROL_TONE_RESPONSE_FINISHED;
- case AST_CONTROL_STREAM_SUSPEND:
- if (*paused) {
- *paused = 0;
- if (ast_playtones_start(chan, 0, ts ? ts->data : tone, 0)) {
- return CONTROL_TONE_RESPONSE_FAILED;
- }
- } else {
- *paused = 1;
- ast_playtones_stop(chan);
- }
- return CONTROL_TONE_RESPONSE_NORMAL;
- case AST_CONTROL_STREAM_RESTART:
- ast_playtones_stop(chan);
- if (ast_playtones_start(chan, 0, ts ? ts->data : tone, 0)) {
- return CONTROL_TONE_RESPONSE_FAILED;
- }
- return CONTROL_TONE_RESPONSE_NORMAL;
- case AST_CONTROL_STREAM_REVERSE:
- ast_log(LOG_NOTICE, "Media control operation 'reverse' not supported for media type 'tone'\n");
- return CONTROL_TONE_RESPONSE_NORMAL;
- case AST_CONTROL_STREAM_FORWARD:
- ast_log(LOG_NOTICE, "Media control operation 'forward' not supported for media type 'tone'\n");
- return CONTROL_TONE_RESPONSE_NORMAL;
- case AST_CONTROL_HANGUP:
- case AST_CONTROL_BUSY:
- case AST_CONTROL_CONGESTION:
- return CONTROL_TONE_RESPONSE_FINISHED;
- }
- return CONTROL_TONE_RESPONSE_NORMAL;
- }
- static int parse_tone_uri(char *tone_parser,
- const char **tone_indication,
- const char **tone_zone)
- {
- *tone_indication = strsep(&tone_parser, ";");
- if (ast_strlen_zero(tone_parser)) {
- /* Only the indication is included */
- return 0;
- }
- if (!(strncmp(tone_parser, "tonezone=", 9))) {
- *tone_zone = tone_parser + 9;
- } else {
- ast_log(LOG_ERROR, "Unexpected Tone URI component: %s\n", tone_parser);
- return -1;
- }
- return 0;
- }
- int ast_control_tone(struct ast_channel *chan, const char *tone)
- {
- struct ast_tone_zone *zone = NULL;
- struct ast_tone_zone_sound *ts;
- int paused = 0;
- int res = 0;
- const char *tone_indication = NULL;
- const char *tone_zone = NULL;
- char *tone_uri_parser;
- if (ast_strlen_zero(tone)) {
- return -1;
- }
- tone_uri_parser = ast_strdupa(tone);
- if (parse_tone_uri(tone_uri_parser, &tone_indication, &tone_zone)) {
- return -1;
- }
- if (tone_zone) {
- zone = ast_get_indication_zone(tone_zone);
- }
- ts = ast_get_indication_tone(zone ? zone : ast_channel_zone(chan), tone_indication);
- if (ast_playtones_start(chan, 0, ts ? ts->data : tone_indication, 0)) {
- res = -1;
- }
- while (!res) {
- struct ast_frame *fr;
- if (ast_waitfor(chan, -1) < 0) {
- res = -1;
- break;
- }
- fr = ast_read_noaudio(chan);
- if (!fr) {
- res = -1;
- break;
- }
- if (fr->frametype != AST_FRAME_CONTROL) {
- continue;
- }
- res = control_tone_frame_response(chan, fr, ts, tone_indication, &paused);
- if (res == CONTROL_TONE_RESPONSE_FINISHED) {
- res = 0;
- break;
- } else if (res == CONTROL_TONE_RESPONSE_FAILED) {
- res = -1;
- break;
- }
- }
- if (ts) {
- ast_tone_zone_sound_unref(ts);
- }
- if (zone) {
- ast_tone_zone_unref(zone);
- }
- return res;
- }
- int ast_play_and_wait(struct ast_channel *chan, const char *fn)
- {
- int d = 0;
- if ((d = ast_streamfile(chan, fn, ast_channel_language(chan)))) {
- return d;
- }
- d = ast_waitstream(chan, AST_DIGIT_ANY);
- ast_stopstream(chan);
- return d;
- }
- /*!
- * \brief Construct a silence frame of the same duration as \a orig.
- *
- * The \a orig frame must be \ref ast_format_slin.
- *
- * \param orig Frame as basis for silence to generate.
- * \return New frame of silence; free with ast_frfree().
- * \retval NULL on error.
- */
- static struct ast_frame *make_silence(const struct ast_frame *orig)
- {
- struct ast_frame *silence;
- size_t size;
- size_t datalen;
- size_t samples = 0;
- if (!orig) {
- return NULL;
- }
- do {
- if (ast_format_cmp(orig->subclass.format, ast_format_slin) == AST_FORMAT_CMP_NOT_EQUAL) {
- ast_log(LOG_WARNING, "Attempting to silence non-slin frame\n");
- return NULL;
- }
- samples += orig->samples;
- orig = AST_LIST_NEXT(orig, frame_list);
- } while (orig);
- ast_verb(4, "Silencing %zu samples\n", samples);
- datalen = sizeof(short) * samples;
- size = sizeof(*silence) + datalen;
- silence = ast_calloc(1, size);
- if (!silence) {
- return NULL;
- }
- silence->mallocd = AST_MALLOCD_HDR;
- silence->frametype = AST_FRAME_VOICE;
- silence->data.ptr = (void *)(silence + 1);
- silence->samples = samples;
- silence->datalen = datalen;
- silence->subclass.format = ao2_bump(ast_format_slin);
- return silence;
- }
- /*!
- * \brief Sets a channel's read format to \ref ast_format_slin, recording
- * its original format.
- *
- * \param chan Channel to modify.
- * \param[out] orig_format Output variable to store channel's original read
- * format.
- * \return 0 on success.
- * \return -1 on error.
- */
- static int set_read_to_slin(struct ast_channel *chan, struct ast_format **orig_format)
- {
- if (!chan || !orig_format) {
- return -1;
- }
- *orig_format = ao2_bump(ast_channel_readformat(chan));
- return ast_set_read_format(chan, ast_format_slin);
- }
- static int global_silence_threshold = 128;
- static int global_maxsilence = 0;
- /*! Optionally play a sound file or a beep, then record audio and video from the channel.
- * \param chan Channel to playback to/record from.
- * \param playfile Filename of sound to play before recording begins.
- * \param recordfile Filename to record to.
- * \param maxtime Maximum length of recording (in seconds).
- * \param fmt Format(s) to record message in. Multiple formats may be specified by separating them with a '|'.
- * \param duration Where to store actual length of the recorded message (in milliseconds).
- * \param sound_duration Where to store the length of the recorded message (in milliseconds), minus any silence
- * \param beep Whether to play a beep before starting to record.
- * \param silencethreshold
- * \param maxsilence Length of silence that will end a recording (in milliseconds).
- * \param path Optional filesystem path to unlock.
- * \param prepend If true, prepend the recorded audio to an existing file and follow prepend mode recording rules
- * \param acceptdtmf DTMF digits that will end the recording.
- * \param canceldtmf DTMF digits that will cancel the recording.
- * \param skip_confirmation_sound If true, don't play auth-thankyou at end. Nice for custom recording prompts in apps.
- * \param if_exists
- *
- * \retval -1 failure or hangup
- * \retval 'S' Recording ended from silence timeout
- * \retval 't' Recording ended from the message exceeding the maximum duration, or via DTMF in prepend mode
- * \retval dtmfchar Recording ended via the return value's DTMF character for either cancel or accept.
- */
- static int __ast_play_and_record(struct ast_channel *chan, const char *playfile,
- const char *recordfile, int maxtime, const char *fmt, int *duration,
- int *sound_duration, int beep, int silencethreshold, int maxsilence,
- const char *path, int prepend, const char *acceptdtmf, const char *canceldtmf,
- int skip_confirmation_sound, enum ast_record_if_exists if_exists)
- {
- int d = 0;
- char *fmts;
- char comment[256];
- int x, fmtcnt = 1, res = -1, outmsg = 0;
- struct ast_filestream *others[AST_MAX_FORMATS];
- const char *sfmt[AST_MAX_FORMATS];
- char *stringp = NULL;
- time_t start, end;
- struct ast_dsp *sildet = NULL; /* silence detector dsp */
- int totalsilence = 0;
- int dspsilence = 0;
- int olddspsilence = 0;
- struct ast_format *rfmt = NULL;
- struct ast_silence_generator *silgen = NULL;
- char prependfile[PATH_MAX];
- int ioflags; /* IO flags for writing output file */
- SCOPE_ENTER(3, "%s: play: '%s' record: '%s' path: '%s' prepend: %d\n",
- ast_channel_name(chan), playfile, recordfile, path, prepend);
- ioflags = O_CREAT|O_WRONLY;
- switch (if_exists) {
- case AST_RECORD_IF_EXISTS_FAIL:
- ioflags |= O_EXCL;
- break;
- case AST_RECORD_IF_EXISTS_OVERWRITE:
- ioflags |= O_TRUNC;
- break;
- case AST_RECORD_IF_EXISTS_APPEND:
- ioflags |= O_APPEND;
- break;
- case AST_RECORD_IF_EXISTS_ERROR:
- ast_assert(0);
- break;
- }
- if (silencethreshold < 0) {
- silencethreshold = global_silence_threshold;
- }
- if (maxsilence < 0) {
- maxsilence = global_maxsilence;
- }
- /* barf if no pointer passed to store duration in */
- if (!duration) {
- ast_log(LOG_WARNING, "Error play_and_record called without duration pointer\n");
- return -1;
- }
- ast_debug(1, "play_and_record: %s, %s, '%s'\n", playfile ? playfile : "<None>", recordfile, fmt);
- snprintf(comment, sizeof(comment), "Playing %s, Recording to: %s on %s\n", playfile ? playfile : "<None>", recordfile, ast_channel_name(chan));
- if (playfile || beep) {
- if (!beep) {
- ast_trace(-1, "Playing '%s' to '%s'\n", playfile, ast_channel_name(chan));
- d = ast_play_and_wait(chan, playfile);
- }
- if (d > -1) {
- ast_trace(-1, "Playing 'beep' to '%s'\n", ast_channel_name(chan));
- d = ast_stream_and_wait(chan, "beep", "");
- }
- if (d < 0) {
- SCOPE_EXIT_RTN_VALUE(-1, "Failed to play. RC: %d\n", d);
- }
- }
- if (prepend) {
- ast_copy_string(prependfile, recordfile, sizeof(prependfile));
- strncat(prependfile, "-prepend", sizeof(prependfile) - strlen(prependfile) - 1);
- ast_trace(-1, "Prepending to '%s'\n", prependfile);
- }
- fmts = ast_strdupa(fmt);
- stringp = fmts;
- strsep(&stringp, "|");
- ast_debug(1, "Recording Formats: sfmts=%s\n", fmts);
- sfmt[0] = ast_strdupa(fmts);
- while ((fmt = strsep(&stringp, "|"))) {
- if (fmtcnt > AST_MAX_FORMATS - 1) {
- ast_log(LOG_WARNING, "Please increase AST_MAX_FORMATS in file.h\n");
- break;
- }
- /*
- * Storage for 'fmt' is on the stack and held by 'fmts', which is maintained for
- * the rest of this function. So okay to not duplicate 'fmt' here, but only keep
- * a pointer to it.
- */
- sfmt[fmtcnt++] = fmt;
- }
- end = start = time(NULL); /* pre-initialize end to be same as start in case we never get into loop */
- for (x = 0; x < fmtcnt; x++) {
- others[x] = ast_writefile(prepend ? prependfile : recordfile, sfmt[x], comment, ioflags, 0, AST_FILE_MODE);
- ast_trace(-1, "x=%d, open writing: %s format: %s, %p\n", x, prepend ? prependfile : recordfile, sfmt[x], others[x]);
- if (!others[x]) {
- break;
- }
- }
- if (path) {
- ast_unlock_path(path);
- }
- if (maxsilence > 0) {
- sildet = ast_dsp_new(); /* Create the silence detector */
- if (!sildet) {
- ast_log(LOG_WARNING, "Unable to create silence detector :(\n");
- return -1;
- }
- ast_dsp_set_threshold(sildet, silencethreshold);
- res = set_read_to_slin(chan, &rfmt);
- if (res < 0) {
- ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
- ast_dsp_free(sildet);
- ao2_cleanup(rfmt);
- return -1;
- }
- }
- if (!prepend) {
- /* Request a video update */
- ast_indicate(chan, AST_CONTROL_VIDUPDATE);
- if (ast_opt_transmit_silence) {
- silgen = ast_channel_start_silence_generator(chan);
- }
- }
- if (x == fmtcnt) {
- /* Loop, writing the packets we read to the writer(s), until
- * we have reason to stop. */
- struct ast_frame *f;
- int paused = 0;
- int muted = 0;
- time_t pause_start = 0;
- int paused_secs = 0;
- int pausedsilence = 0;
- for (;;) {
- if (!(res = ast_waitfor(chan, 2000))) {
- ast_debug(1, "One waitfor failed, trying another\n");
- /* Try one more time in case of masq */
- if (!(res = ast_waitfor(chan, 2000))) {
- ast_log(LOG_WARNING, "No audio available on %s??\n", ast_channel_name(chan));
- res = -1;
- }
- }
- if (res < 0) {
- f = NULL;
- break;
- }
- if (!(f = ast_read(chan))) {
- break;
- }
- if (f->frametype == AST_FRAME_VOICE) {
- /* write each format */
- if (paused) {
- /* It's all good */
- res = 0;
- } else {
- struct ast_frame *silence = NULL;
- struct ast_frame *orig = f;
- if (muted) {
- silence = make_silence(orig);
- if (!silence) {
- ast_log(LOG_WARNING, "Error creating silence\n");
- break;
- }
- f = silence;
- }
- for (x = 0; x < fmtcnt; x++) {
- if (prepend && !others[x]) {
- break;
- }
- res = ast_writestream(others[x], f);
- }
- ast_frame_dtor(silence);
- f = orig;
- }
- /* Silence Detection */
- if (maxsilence > 0) {
- dspsilence = 0;
- ast_dsp_silence(sildet, f, &dspsilence);
- if (olddspsilence > dspsilence) {
- totalsilence += olddspsilence;
- }
- olddspsilence = dspsilence;
- if (paused) {
- /* record how much silence there was while we are paused */
- pausedsilence = dspsilence;
- } else if (dspsilence > pausedsilence) {
- /* ignore the paused silence */
- dspsilence -= pausedsilence;
- } else {
- /* dspsilence has reset, reset pausedsilence */
- pausedsilence = 0;
- }
- if (dspsilence > maxsilence) {
- /* Ended happily with silence */
- ast_verb(3, "Recording automatically stopped after a silence of %d seconds\n", dspsilence/1000);
- res = 'S';
- outmsg = 2;
- break;
- }
- }
- /* Exit on any error */
- if (res) {
- ast_log(LOG_WARNING, "Error writing frame\n");
- break;
- }
- } else if (f->frametype == AST_FRAME_VIDEO) {
- /* Write only once */
- ast_writestream(others[0], f);
- } else if (f->frametype == AST_FRAME_DTMF) {
- if (prepend) {
- /* stop recording with any digit */
- ast_verb(3, "User ended message by pressing %c\n", f->subclass.integer);
- res = 't';
- outmsg = 2;
- break;
- }
- if (strchr(acceptdtmf, f->subclass.integer)) {
- ast_verb(3, "User ended message by pressing %c\n", f->subclass.integer);
- res = f->subclass.integer;
- outmsg = 2;
- break;
- }
- if (strchr(canceldtmf, f->subclass.integer)) {
- ast_verb(3, "User canceled message by pressing %c\n", f->subclass.integer);
- res = f->subclass.integer;
- outmsg = 0;
- break;
- }
- } else if (f->frametype == AST_FRAME_CONTROL) {
- if (f->subclass.integer == AST_CONTROL_RECORD_CANCEL) {
- ast_verb(3, "Message canceled by control\n");
- outmsg = 0; /* cancels the recording */
- res = 0;
- break;
- } else if (f->subclass.integer == AST_CONTROL_RECORD_STOP) {
- ast_verb(3, "Message ended by control\n");
- res = 0;
- break;
- } else if (f->subclass.integer == AST_CONTROL_RECORD_SUSPEND) {
- paused = !paused;
- ast_verb(3, "Message %spaused by control\n",
- paused ? "" : "un");
- if (paused) {
- pause_start = time(NULL);
- } else {
- paused_secs += time(NULL) - pause_start;
- }
- } else if (f->subclass.integer == AST_CONTROL_RECORD_MUTE) {
- muted = !muted;
- ast_verb(3, "Message %smuted by control\n",
- muted ? "" : "un");
- /* We can only silence slin frames, so
- * set the mode, if we haven't already
- * for sildet
- */
- if (muted && !rfmt) {
- ast_verb(3, "Setting read format to linear mode\n");
- res = set_read_to_slin(chan, &rfmt);
- if (res < 0) {
- ast_log(LOG_WARNING, "Unable to set to linear mode, giving up\n");
- break;
- }
- }
- }
- }
- if (maxtime && !paused) {
- end = time(NULL);
- if (maxtime < (end - start - paused_secs)) {
- ast_verb(3, "Took too long, cutting it short...\n");
- res = 't';
- outmsg = 2;
- break;
- }
- }
- ast_frfree(f);
- }
- if (!f) {
- ast_verb(3, "User hung up\n");
- res = -1;
- outmsg = 1;
- } else {
- ast_frfree(f);
- }
- } else {
- ast_log(LOG_WARNING, "Error creating writestream '%s', format '%s'\n", recordfile, sfmt[x]);
- }
- if (!prepend) {
- if (silgen) {
- ast_channel_stop_silence_generator(chan, silgen);
- }
- }
- /*!\note
- * Instead of asking how much time passed (end - start), calculate the number
- * of seconds of audio which actually went into the file. This fixes a
- * problem where audio is stopped up on the network and never gets to us.
- *
- * Note that we still want to use the number of seconds passed for the max
- * message, otherwise we could get a situation where this stream is never
- * closed (which would create a resource leak).
- */
- *duration = others[0] ? ast_tellstream(others[0]) / 8000 : 0;
- if (sound_duration) {
- *sound_duration = *duration;
- }
- if (!prepend) {
- /* Reduce duration by a total silence amount */
- if (olddspsilence <= dspsilence) {
- totalsilence += dspsilence;
- }
- if (sound_duration) {
- if (totalsilence > 0) {
- *sound_duration -= (totalsilence - 200) / 1000;
- }
- if (*sound_duration < 0) {
- *sound_duration = 0;
- }
- }
- if (dspsilence > 0) {
- *duration -= (dspsilence - 200) / 1000;
- }
- if (*duration < 0) {
- *duration = 0;
- }
- for (x = 0; x < fmtcnt; x++) {
- if (!others[x]) {
- break;
- }
- /*!\note
- * If we ended with silence, trim all but the first 200ms of silence
- * off the recording. However, if we ended with '#', we don't want
- * to trim ANY part of the recording.
- */
- if (res > 0 && dspsilence) {
- /* rewind only the trailing silence */
- ast_stream_rewind(others[x], dspsilence - 200);
- }
- ast_truncstream(others[x]);
- ast_closestream(others[x]);
- }
- } else if (prepend && outmsg) {
- struct ast_filestream *realfiles[AST_MAX_FORMATS];
- struct ast_frame *fr;
- for (x = 0; x < fmtcnt; x++) {
- snprintf(comment, sizeof(comment), "Opening the real file %s.%s\n", recordfile, sfmt[x]);
- realfiles[x] = ast_readfile(recordfile, sfmt[x], comment, O_RDONLY, 0, 0);
- if (!others[x]) {
- break;
- }
- if (!realfiles[x]) {
- ast_closestream(others[x]);
- continue;
- }
- /*!\note Same logic as above. */
- if (dspsilence) {
- ast_stream_rewind(others[x], dspsilence - 200);
- }
- ast_truncstream(others[x]);
- /* add the original file too */
- while ((fr = ast_readframe(realfiles[x]))) {
- ast_writestream(others[x], fr);
- ast_frfree(fr);
- }
- ast_closestream(others[x]);
- ast_closestream(realfiles[x]);
- ast_filerename(prependfile, recordfile, sfmt[x]);
- ast_trace(-1, "Recording Format: sfmts=%s, prependfile %s, recordfile %s\n", sfmt[x], prependfile, recordfile);
- ast_trace(-1, "Deleting the prepend file %s.%s\n", recordfile, sfmt[x]);
- ast_filedelete(prependfile, sfmt[x]);
- }
- } else {
- for (x = 0; x < fmtcnt; x++) {
- if (!others[x]) {
- break;
- }
- ast_closestream(others[x]);
- }
- }
- if (rfmt && ast_set_read_format(chan, rfmt)) {
- ast_log(LOG_WARNING, "Unable to restore format %s to channel '%s'\n", ast_format_get_name(rfmt), ast_channel_name(chan));
- }
- ao2_cleanup(rfmt);
- if ((outmsg == 2) && (!skip_confirmation_sound)) {
- ast_stream_and_wait(chan, "auth-thankyou", "");
- }
- if (sildet) {
- ast_dsp_free(sildet);
- }
- SCOPE_EXIT_RTN_VALUE(res, "Done. RC: %d\n", res);
- }
- static const char default_acceptdtmf[] = "#";
- static const char default_canceldtmf[] = "";
- int ast_play_and_record_full(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int *sound_duration, int beep, int silencethreshold, int maxsilence, const char *path, const char *acceptdtmf, const char *canceldtmf, int skip_confirmation_sound, enum ast_record_if_exists if_exists)
- {
- return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, beep, silencethreshold, maxsilence, path, 0, S_OR(acceptdtmf, ""), S_OR(canceldtmf, default_canceldtmf), skip_confirmation_sound, if_exists);
- }
- int ast_play_and_record(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, int *sound_duration, int silencethreshold, int maxsilence, const char *path)
- {
- return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, 0, silencethreshold, maxsilence, path, 0, default_acceptdtmf, default_canceldtmf, 0, AST_RECORD_IF_EXISTS_OVERWRITE);
- }
- int ast_play_and_prepend(struct ast_channel *chan, char *playfile, char *recordfile, int maxtime, char *fmt, int *duration, int *sound_duration, int beep, int silencethreshold, int maxsilence)
- {
- return __ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, sound_duration, beep, silencethreshold, maxsilence, NULL, 1, default_acceptdtmf, default_canceldtmf, 1, AST_RECORD_IF_EXISTS_OVERWRITE);
- }
- /* Channel group core functions */
- int ast_app_group_split_group(const char *data, char *group, int group_max, char *category, int category_max)
- {
- int res = 0;
- char tmp[256];
- char *grp = NULL, *cat = NULL;
- if (!ast_strlen_zero(data)) {
- ast_copy_string(tmp, data, sizeof(tmp));
- grp = tmp;
- if ((cat = strchr(tmp, '@'))) {
- *cat++ = '\0';
- }
- }
- if (!ast_strlen_zero(grp)) {
- ast_copy_string(group, grp, group_max);
- } else {
- *group = '\0';
- }
- if (!ast_strlen_zero(cat)) {
- ast_copy_string(category, cat, category_max);
- }
- return res;
- }
- int ast_app_group_set_channel(struct ast_channel *chan, const char *data)
- {
- int res = 0;
- char group[80] = "", category[80] = "";
- struct ast_group_info *gi = NULL;
- size_t len = 0;
- if (ast_app_group_split_group(data, group, sizeof(group), category, sizeof(category))) {
- return -1;
- }
- /* Calculate memory we will need if this is new */
- len = sizeof(*gi) + strlen(group) + 1;
- if (!ast_strlen_zero(category)) {
- len += strlen(category) + 1;
- }
- AST_RWLIST_WRLOCK(&groups);
- AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
- if ((gi->chan == chan) && ((ast_strlen_zero(category) && ast_strlen_zero(gi->category)) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
- AST_RWLIST_REMOVE_CURRENT(group_list);
- ast_free(gi);
- break;
- }
- }
- AST_RWLIST_TRAVERSE_SAFE_END;
- if (ast_strlen_zero(group)) {
- /* Enable unsetting the group */
- } else if ((gi = ast_calloc(1, len))) {
- gi->chan = chan;
- gi->group = (char *) gi + sizeof(*gi);
- strcpy(gi->group, group);
- if (!ast_strlen_zero(category)) {
- gi->category = (char *) gi + sizeof(*gi) + strlen(group) + 1;
- strcpy(gi->category, category);
- }
- AST_RWLIST_INSERT_TAIL(&groups, gi, group_list);
- } else {
- res = -1;
- }
- AST_RWLIST_UNLOCK(&groups);
- return res;
- }
- int ast_app_group_get_count(const char *group, const char *category)
- {
- struct ast_group_info *gi = NULL;
- int count = 0;
- if (ast_strlen_zero(group)) {
- return 0;
- }
- AST_RWLIST_RDLOCK(&groups);
- AST_RWLIST_TRAVERSE(&groups, gi, group_list) {
- if (!strcasecmp(gi->group, group) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !strcasecmp(gi->category, category)))) {
- count++;
- }
- }
- AST_RWLIST_UNLOCK(&groups);
- return count;
- }
- int ast_app_group_match_get_count(const char *groupmatch, const char *category)
- {
- struct ast_group_info *gi = NULL;
- regex_t regexbuf_group;
- regex_t regexbuf_category;
- int count = 0;
- if (ast_strlen_zero(groupmatch)) {
- ast_log(LOG_NOTICE, "groupmatch empty\n");
- return 0;
- }
- /* if regex compilation fails, return zero matches */
- if (regcomp(®exbuf_group, groupmatch, REG_EXTENDED | REG_NOSUB)) {
- ast_log(LOG_ERROR, "Regex compile failed on: %s\n", groupmatch);
- return 0;
- }
- if (!ast_strlen_zero(category) && regcomp(®exbuf_category, category, REG_EXTENDED | REG_NOSUB)) {
- ast_log(LOG_ERROR, "Regex compile failed on: %s\n", category);
- regfree(®exbuf_group);
- return 0;
- }
- AST_RWLIST_RDLOCK(&groups);
- AST_RWLIST_TRAVERSE(&groups, gi, group_list) {
- if (!regexec(®exbuf_group, gi->group, 0, NULL, 0) && (ast_strlen_zero(category) || (!ast_strlen_zero(gi->category) && !regexec(®exbuf_category, gi->category, 0, NULL, 0)))) {
- count++;
- }
- }
- AST_RWLIST_UNLOCK(&groups);
- regfree(®exbuf_group);
- if (!ast_strlen_zero(category)) {
- regfree(®exbuf_category);
- }
- return count;
- }
- int ast_app_group_update(struct ast_channel *old, struct ast_channel *new)
- {
- struct ast_group_info *gi = NULL;
- AST_RWLIST_WRLOCK(&groups);
- AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
- if (gi->chan == old) {
- gi->chan = new;
- } else if (gi->chan == new) {
- AST_RWLIST_REMOVE_CURRENT(group_list);
- ast_free(gi);
- }
- }
- AST_RWLIST_TRAVERSE_SAFE_END;
- AST_RWLIST_UNLOCK(&groups);
- return 0;
- }
- int ast_app_group_discard(struct ast_channel *chan)
- {
- struct ast_group_info *gi = NULL;
- AST_RWLIST_WRLOCK(&groups);
- AST_RWLIST_TRAVERSE_SAFE_BEGIN(&groups, gi, group_list) {
- if (gi->chan == chan) {
- AST_RWLIST_REMOVE_CURRENT(group_list);
- ast_free(gi);
- }
- }
- AST_RWLIST_TRAVERSE_SAFE_END;
- AST_RWLIST_UNLOCK(&groups);
- return 0;
- }
- int ast_app_group_list_wrlock(void)
- {
- return AST_RWLIST_WRLOCK(&groups);
- }
- int ast_app_group_list_rdlock(void)
- {
- return AST_RWLIST_RDLOCK(&groups);
- }
- struct ast_group_info *ast_app_group_list_head(void)
- {
- return AST_RWLIST_FIRST(&groups);
- }
- int ast_app_group_list_unlock(void)
- {
- return AST_RWLIST_UNLOCK(&groups);
- }
- unsigned int __ast_app_separate_args(char *buf, char delim, int remove_chars, char **array, int arraylen)
- {
- int argc;
- char *scan, *wasdelim = NULL;
- int paren = 0, quote = 0, bracket = 0;
- if (!array || !arraylen) {
- return 0;
- }
- memset(array, 0, arraylen * sizeof(*array));
- if (!buf) {
- return 0;
- }
- scan = buf;
- for (argc = 0; *scan && (argc < arraylen - 1); argc++) {
- array[argc] = scan;
- for (; *scan; scan++) {
- if (*scan == '(') {
- paren++;
- } else if (*scan == ')') {
- if (paren) {
- paren--;
- }
- } else if (*scan == '[') {
- bracket++;
- } else if (*scan == ']') {
- if (bracket) {
- bracket--;
- }
- } else if (*scan == '"' && delim != '"') {
- quote = quote ? 0 : 1;
- if (remove_chars) {
- /* Remove quote character from argument */
- memmove(scan, scan + 1, strlen(scan));
- scan--;
- }
- } else if (*scan == '\\') {
- if (remove_chars) {
- /* Literal character, don't parse */
- memmove(scan, scan + 1, strlen(scan));
- } else {
- scan++;
- }
- } else if ((*scan == delim) && !paren && !quote && !bracket) {
- wasdelim = scan;
- *scan++ = '\0';
- break;
- }
- }
- }
- /* If the last character in the original string was the delimiter, then
- * there is one additional argument. */
- if (*scan || (scan > buf && (scan - 1) == wasdelim)) {
- array[argc++] = scan;
- }
- return argc;
- }
- static enum AST_LOCK_RESULT ast_lock_path_lockfile(const char *path)
- {
- char *s;
- char *fs;
- int res;
- int fd;
- int lp = strlen(path);
- time_t start;
- s = ast_alloca(lp + 10);
- fs = ast_alloca(lp + 20);
- snprintf(fs, strlen(path) + 19, "%s/.lock-%08lx", path, (unsigned long)ast_random());
- fd = open(fs, O_WRONLY | O_CREAT | O_EXCL, AST_FILE_MODE);
- if (fd < 0) {
- ast_log(LOG_ERROR, "Unable to create lock file '%s': %s\n", path, strerror(errno));
- return AST_LOCK_PATH_NOT_FOUND;
- }
- close(fd);
- snprintf(s, strlen(path) + 9, "%s/.lock", path);
- start = time(NULL);
- while (((res = link(fs, s)) < 0) && (errno == EEXIST) && (time(NULL) - start < 5)) {
- sched_yield();
- }
- unlink(fs);
- if (res) {
- ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n", path, strerror(errno));
- return AST_LOCK_TIMEOUT;
- } else {
- ast_debug(1, "Locked path '%s'\n", path);
- return AST_LOCK_SUCCESS;
- }
- }
- static int ast_unlock_path_lockfile(const char *path)
- {
- char *s;
- int res;
- s = ast_alloca(strlen(path) + 10);
- snprintf(s, strlen(path) + 9, "%s/%s", path, ".lock");
- if ((res = unlink(s))) {
- ast_log(LOG_ERROR, "Could not unlock path '%s': %s\n", path, strerror(errno));
- } else {
- ast_debug(1, "Unlocked path '%s'\n", path);
- }
- return res;
- }
- struct path_lock {
- AST_LIST_ENTRY(path_lock) le;
- int fd;
- char *path;
- };
- static AST_LIST_HEAD_STATIC(path_lock_list, path_lock);
- static void path_lock_destroy(struct path_lock *obj)
- {
- if (obj->fd >= 0) {
- close(obj->fd);
- }
- if (obj->path) {
- ast_free(obj->path);
- }
- ast_free(obj);
- }
- static enum AST_LOCK_RESULT ast_lock_path_flock(const char *path)
- {
- char *fs;
- int res;
- int fd;
- time_t start;
- struct path_lock *pl;
- struct stat st, ost;
- fs = ast_alloca(strlen(path) + 20);
- snprintf(fs, strlen(path) + 19, "%s/lock", path);
- if (lstat(fs, &st) == 0) {
- if ((st.st_mode & S_IFMT) == S_IFLNK) {
- ast_log(LOG_WARNING, "Unable to create lock file "
- "'%s': it's already a symbolic link\n",
- fs);
- return AST_LOCK_FAILURE;
- }
- if (st.st_nlink > 1) {
- ast_log(LOG_WARNING, "Unable to create lock file "
- "'%s': %u hard links exist\n",
- fs, (unsigned int) st.st_nlink);
- return AST_LOCK_FAILURE;
- }
- }
- if ((fd = open(fs, O_WRONLY | O_CREAT, 0600)) < 0) {
- ast_log(LOG_WARNING, "Unable to create lock file '%s': %s\n",
- fs, strerror(errno));
- return AST_LOCK_PATH_NOT_FOUND;
- }
- if (!(pl = ast_calloc(1, sizeof(*pl)))) {
- /* We don't unlink the lock file here, on the possibility that
- * someone else created it - better to leave a little mess
- * than create a big one by destroying someone else's lock
- * and causing something to be corrupted.
- */
- close(fd);
- return AST_LOCK_FAILURE;
- }
- pl->fd = fd;
- pl->path = ast_strdup(path);
- time(&start);
- while (
- #ifdef SOLARIS
- ((res = fcntl(pl->fd, F_SETLK, fcntl(pl->fd, F_GETFL) | O_NONBLOCK)) < 0) &&
- #else
- ((res = flock(pl->fd, LOCK_EX | LOCK_NB)) < 0) &&
- #endif
- (errno == EWOULDBLOCK) &&
- (time(NULL) - start < 5))
- usleep(1000);
- if (res) {
- ast_log(LOG_WARNING, "Failed to lock path '%s': %s\n",
- path, strerror(errno));
- /* No unlinking of lock done, since we tried and failed to
- * flock() it.
- */
- path_lock_destroy(pl);
- return AST_LOCK_TIMEOUT;
- }
- /* Check for the race where the file is recreated or deleted out from
- * underneath us.
- */
- if (lstat(fs, &st) != 0 && fstat(pl->fd, &ost) != 0 &&
- st.st_dev != ost.st_dev &&
- st.st_ino != ost.st_ino) {
- ast_log(LOG_WARNING, "Unable to create lock file '%s': "
- "file changed underneath us\n", fs);
- path_lock_destroy(pl);
- return AST_LOCK_FAILURE;
- }
- /* Success: file created, flocked, and is the one we started with */
- AST_LIST_LOCK(&path_lock_list);
- AST_LIST_INSERT_TAIL(&path_lock_list, pl, le);
- AST_LIST_UNLOCK(&path_lock_list);
- ast_debug(1, "Locked path '%s'\n", path);
- return AST_LOCK_SUCCESS;
- }
- static int ast_unlock_path_flock(const char *path)
- {
- char *s;
- struct path_lock *p;
- s = ast_alloca(strlen(path) + 20);
- AST_LIST_LOCK(&path_lock_list);
- AST_LIST_TRAVERSE_SAFE_BEGIN(&path_lock_list, p, le) {
- if (!strcmp(p->path, path)) {
- AST_LIST_REMOVE_CURRENT(le);
- break;
- }
- }
- AST_LIST_TRAVERSE_SAFE_END;
- AST_LIST_UNLOCK(&path_lock_list);
- if (p) {
- snprintf(s, strlen(path) + 19, "%s/lock", path);
- unlink(s);
- path_lock_destroy(p);
- ast_debug(1, "Unlocked path '%s'\n", path);
- } else {
- ast_debug(1, "Failed to unlock path '%s': "
- "lock not found\n", path);
- }
- return 0;
- }
- void ast_set_lock_type(enum AST_LOCK_TYPE type)
- {
- ast_lock_type = type;
- }
- enum AST_LOCK_RESULT ast_lock_path(const char *path)
- {
- enum AST_LOCK_RESULT r = AST_LOCK_FAILURE;
- switch (ast_lock_type) {
- case AST_LOCK_TYPE_LOCKFILE:
- r = ast_lock_path_lockfile(path);
- break;
- case AST_LOCK_TYPE_FLOCK:
- r = ast_lock_path_flock(path);
- break;
- }
- return r;
- }
- int ast_unlock_path(const char *path)
- {
- int r = 0;
- switch (ast_lock_type) {
- case AST_LOCK_TYPE_LOCKFILE:
- r = ast_unlock_path_lockfile(path);
- break;
- case AST_LOCK_TYPE_FLOCK:
- r = ast_unlock_path_flock(path);
- break;
- }
- return r;
- }
- int ast_record_review(struct ast_channel *chan, const char *playfile, const char *recordfile, int maxtime, const char *fmt, int *duration, const char *path)
- {
- int silencethreshold;
- int maxsilence = 0;
- int res = 0;
- int cmd = 0;
- int max_attempts = 3;
- int attempts = 0;
- int recorded = 0;
- int message_exists = 0;
- /* Note that urgent and private are for flagging messages as such in the future */
- /* barf if no pointer passed to store duration in */
- if (!duration) {
- ast_log(LOG_WARNING, "Error ast_record_review called without duration pointer\n");
- return -1;
- }
- cmd = '3'; /* Want to start by recording */
- silencethreshold = ast_dsp_get_threshold_from_settings(THRESHOLD_SILENCE);
- while ((cmd >= 0) && (cmd != 't')) {
- switch (cmd) {
- case '1':
- if (!message_exists) {
- /* In this case, 1 is to record a message */
- cmd = '3';
- break;
- } else {
- ast_stream_and_wait(chan, "vm-msgsaved", "");
- cmd = 't';
- return res;
- }
- case '2':
- /* Review */
- ast_verb(3, "Reviewing the recording\n");
- cmd = ast_stream_and_wait(chan, recordfile, AST_DIGIT_ANY);
- break;
- case '3':
- message_exists = 0;
- /* Record */
- ast_verb(3, "R%secording\n", recorded == 1 ? "e-r" : "");
- recorded = 1;
- if ((cmd = ast_play_and_record(chan, playfile, recordfile, maxtime, fmt, duration, NULL, silencethreshold, maxsilence, path)) == -1) {
- /* User has hung up, no options to give */
- return cmd;
- }
- if (cmd == '0') {
- break;
- } else if (cmd == '*') {
- break;
- } else {
- /* If all is well, a message exists */
- message_exists = 1;
- cmd = 0;
- }
- break;
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- case '*':
- case '#':
- cmd = ast_play_and_wait(chan, "vm-sorry");
- break;
- default:
- if (message_exists) {
- cmd = ast_play_and_wait(chan, "vm-review");
- } else {
- if (!(cmd = ast_play_and_wait(chan, "vm-torerecord"))) {
- cmd = ast_waitfordigit(chan, 600);
- }
- }
- if (!cmd) {
- cmd = ast_waitfordigit(chan, 6000);
- }
- if (!cmd) {
- attempts++;
- }
- if (attempts > max_attempts) {
- cmd = 't';
- }
- }
- }
- if (cmd == 't') {
- cmd = 0;
- }
- return cmd;
- }
- #define RES_UPONE (1 << 16)
- #define RES_EXIT (1 << 17)
- #define RES_REPEAT (1 << 18)
- #define RES_RESTART ((1 << 19) | RES_REPEAT)
- static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata);
- static int ivr_dispatch(struct ast_channel *chan, struct ast_ivr_option *option, char *exten, void *cbdata)
- {
- int res;
- int (*ivr_func)(struct ast_channel *, void *);
- char *c;
- char *n;
- switch (option->action) {
- case AST_ACTION_UPONE:
- return RES_UPONE;
- case AST_ACTION_EXIT:
- return RES_EXIT | (((unsigned long)(option->adata)) & 0xffff);
- case AST_ACTION_REPEAT:
- return RES_REPEAT | (((unsigned long)(option->adata)) & 0xffff);
- case AST_ACTION_RESTART:
- return RES_RESTART ;
- case AST_ACTION_NOOP:
- return 0;
- case AST_ACTION_BACKGROUND:
- res = ast_stream_and_wait(chan, (char *)option->adata, AST_DIGIT_ANY);
- if (res < 0) {
- ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
- res = 0;
- }
- return res;
- case AST_ACTION_PLAYBACK:
- res = ast_stream_and_wait(chan, (char *)option->adata, "");
- if (res < 0) {
- ast_log(LOG_NOTICE, "Unable to find file '%s'!\n", (char *)option->adata);
- res = 0;
- }
- return res;
- case AST_ACTION_MENU:
- if ((res = ast_ivr_menu_run_internal(chan, (struct ast_ivr_menu *)option->adata, cbdata)) == -2) {
- /* Do not pass entry errors back up, treat as though it was an "UPONE" */
- res = 0;
- }
- return res;
- case AST_ACTION_WAITOPTION:
- if (!(res = ast_waitfordigit(chan, ast_channel_pbx(chan) ? ast_channel_pbx(chan)->rtimeoutms : 10000))) {
- return 't';
- }
- return res;
- case AST_ACTION_CALLBACK:
- ivr_func = option->adata;
- res = ivr_func(chan, cbdata);
- return res;
- case AST_ACTION_TRANSFER:
- res = ast_parseable_goto(chan, option->adata);
- return 0;
- case AST_ACTION_PLAYLIST:
- case AST_ACTION_BACKLIST:
- res = 0;
- c = ast_strdupa(option->adata);
- while ((n = strsep(&c, ";"))) {
- if ((res = ast_stream_and_wait(chan, n,
- (option->action == AST_ACTION_BACKLIST) ? AST_DIGIT_ANY : ""))) {
- break;
- }
- }
- ast_stopstream(chan);
- return res;
- default:
- ast_log(LOG_NOTICE, "Unknown dispatch function %u, ignoring!\n", option->action);
- return 0;
- }
- return -1;
- }
- static int option_exists(struct ast_ivr_menu *menu, char *option)
- {
- int x;
- for (x = 0; menu->options[x].option; x++) {
- if (!strcasecmp(menu->options[x].option, option)) {
- return x;
- }
- }
- return -1;
- }
- static int option_matchmore(struct ast_ivr_menu *menu, char *option)
- {
- int x;
- for (x = 0; menu->options[x].option; x++) {
- if ((!strncasecmp(menu->options[x].option, option, strlen(option))) &&
- (menu->options[x].option[strlen(option)])) {
- return x;
- }
- }
- return -1;
- }
- static int read_newoption(struct ast_channel *chan, struct ast_ivr_menu *menu, char *exten, int maxexten)
- {
- int res = 0;
- int ms;
- while (option_matchmore(menu, exten)) {
- ms = ast_channel_pbx(chan) ? ast_channel_pbx(chan)->dtimeoutms : 5000;
- if (strlen(exten) >= maxexten - 1) {
- break;
- }
- if ((res = ast_waitfordigit(chan, ms)) < 1) {
- break;
- }
- exten[strlen(exten) + 1] = '\0';
- exten[strlen(exten)] = res;
- }
- return res > 0 ? 0 : res;
- }
- static int ast_ivr_menu_run_internal(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
- {
- /* Execute an IVR menu structure */
- int res = 0;
- int pos = 0;
- int retries = 0;
- char exten[AST_MAX_EXTENSION] = "s";
- if (option_exists(menu, "s") < 0) {
- strcpy(exten, "g");
- if (option_exists(menu, "g") < 0) {
- ast_log(LOG_WARNING, "No 's' nor 'g' extension in menu '%s'!\n", menu->title);
- return -1;
- }
- }
- while (!res) {
- while (menu->options[pos].option) {
- if (!strcasecmp(menu->options[pos].option, exten)) {
- res = ivr_dispatch(chan, menu->options + pos, exten, cbdata);
- ast_debug(1, "IVR Dispatch of '%s' (pos %d) yields %d\n", exten, pos, res);
- if (res < 0) {
- break;
- } else if (res & RES_UPONE) {
- return 0;
- } else if (res & RES_EXIT) {
- return res;
- } else if (res & RES_REPEAT) {
- int maxretries = res & 0xffff;
- if ((res & RES_RESTART) == RES_RESTART) {
- retries = 0;
- } else {
- retries++;
- }
- if (!maxretries) {
- maxretries = 3;
- }
- if ((maxretries > 0) && (retries >= maxretries)) {
- ast_debug(1, "Max retries %d exceeded\n", maxretries);
- return -2;
- } else {
- if (option_exists(menu, "g") > -1) {
- strcpy(exten, "g");
- } else if (option_exists(menu, "s") > -1) {
- strcpy(exten, "s");
- }
- }
- pos = 0;
- continue;
- } else if (res && strchr(AST_DIGIT_ANY, res)) {
- ast_debug(1, "Got start of extension, %c\n", res);
- exten[1] = '\0';
- exten[0] = res;
- if ((res = read_newoption(chan, menu, exten, sizeof(exten)))) {
- break;
- }
- if (option_exists(menu, exten) < 0) {
- if (option_exists(menu, "i")) {
- ast_debug(1, "Invalid extension entered, going to 'i'!\n");
- strcpy(exten, "i");
- pos = 0;
- continue;
- } else {
- ast_debug(1, "Aborting on invalid entry, with no 'i' option!\n");
- res = -2;
- break;
- }
- } else {
- ast_debug(1, "New existing extension: %s\n", exten);
- pos = 0;
- continue;
- }
- }
- }
- pos++;
- }
- ast_debug(1, "Stopping option '%s', res is %d\n", exten, res);
- pos = 0;
- if (!strcasecmp(exten, "s")) {
- strcpy(exten, "g");
- } else {
- break;
- }
- }
- return res;
- }
- int ast_ivr_menu_run(struct ast_channel *chan, struct ast_ivr_menu *menu, void *cbdata)
- {
- int res = ast_ivr_menu_run_internal(chan, menu, cbdata);
- /* Hide internal coding */
- return res > 0 ? 0 : res;
- }
- char *ast_read_textfile(const char *filename)
- {
- int fd, count = 0, res;
- char *output = NULL;
- struct stat filesize;
- if (stat(filename, &filesize) == -1) {
- ast_log(LOG_WARNING, "Error can't stat %s\n", filename);
- return NULL;
- }
- count = filesize.st_size + 1;
- if ((fd = open(filename, O_RDONLY)) < 0) {
- ast_log(LOG_WARNING, "Cannot open file '%s' for reading: %s\n", filename, strerror(errno));
- return NULL;
- }
- if ((output = ast_malloc(count))) {
- res = read(fd, output, count - 1);
- if (res == count - 1) {
- output[res] = '\0';
- } else {
- ast_log(LOG_WARNING, "Short read of %s (%d of %d): %s\n", filename, res, count - 1, strerror(errno));
- ast_free(output);
- output = NULL;
- }
- }
- close(fd);
- return output;
- }
- static int parse_options(const struct ast_app_option *options, void *_flags, char **args, char *optstr, int flaglen)
- {
- char *s, *arg;
- int curarg, res = 0;
- unsigned int argloc;
- struct ast_flags *flags = _flags;
- struct ast_flags64 *flags64 = _flags;
- if (flaglen == 32) {
- ast_clear_flag(flags, AST_FLAGS_ALL);
- } else {
- flags64->flags = 0;
- }
- if (!optstr) {
- return 0;
- }
- s = optstr;
- while (*s) {
- curarg = *s++ & 0x7f; /* the array (in app.h) has 128 entries */
- argloc = options[curarg].arg_index;
- if (*s == '(') {
- int paren = 1, quote = 0;
- int parsequotes = (s[1] == '"') ? 1 : 0;
- /* Has argument */
- arg = ++s;
- for (; *s; s++) {
- if (*s == '(' && !quote) {
- paren++;
- } else if (*s == ')' && !quote) {
- /* Count parentheses, unless they're within quotes (or backslashed, below) */
- paren--;
- } else if (*s == '"' && parsequotes) {
- /* Leave embedded quotes alone, unless they are the first character */
- quote = quote ? 0 : 1;
- ast_copy_string(s, s + 1, INT_MAX);
- s--;
- } else if (*s == '\\') {
- if (!quote) {
- /* If a backslash is found outside of quotes, remove it */
- ast_copy_string(s, s + 1, INT_MAX);
- } else if (quote && s[1] == '"') {
- /* Backslash for a quote character within quotes, remove the backslash */
- ast_copy_string(s, s + 1, INT_MAX);
- } else {
- /* Backslash within quotes, keep both characters */
- s++;
- }
- }
- if (paren == 0) {
- break;
- }
- }
- /* This will find the closing paren we found above, or none, if the string ended before we found one. */
- if ((s = strchr(s, ')'))) {
- if (argloc) {
- args[argloc - 1] = arg;
- }
- *s++ = '\0';
- } else {
- ast_log(LOG_WARNING, "Missing closing parenthesis for argument '%c' in string '%s'\n", curarg, arg);
- res = -1;
- break;
- }
- } else if (argloc) {
- args[argloc - 1] = "";
- }
- if (!options[curarg].flag) {
- ast_log(LOG_WARNING, "Unrecognized option: '%c'\n", curarg);
- }
- if (flaglen == 32) {
- ast_set_flag(flags, options[curarg].flag);
- } else {
- ast_set_flag64(flags64, options[curarg].flag);
- }
- }
- return res;
- }
- int ast_app_parse_options(const struct ast_app_option *options, struct ast_flags *flags, char **args, char *optstr)
- {
- return parse_options(options, flags, args, optstr, 32);
- }
- int ast_app_parse_options64(const struct ast_app_option *options, struct ast_flags64 *flags, char **args, char *optstr)
- {
- return parse_options(options, flags, args, optstr, 64);
- }
- void ast_app_options2str64(const struct ast_app_option *options, struct ast_flags64 *flags, char *buf, size_t len)
- {
- unsigned int i, found = 0;
- for (i = 32; i < 128 && found < len; i++) {
- if (ast_test_flag64(flags, options[i].flag)) {
- buf[found++] = i;
- }
- }
- buf[found] = '\0';
- }
- int ast_get_encoded_char(const char *stream, char *result, size_t *consumed)
- {
- int i;
- *consumed = 1;
- *result = 0;
- if (ast_strlen_zero(stream)) {
- *consumed = 0;
- return -1;
- }
- if (*stream == '\\') {
- *consumed = 2;
- switch (*(stream + 1)) {
- case 'n':
- *result = '\n';
- break;
- case 'r':
- *result = '\r';
- break;
- case 't':
- *result = '\t';
- break;
- case 'x':
- /* Hexadecimal */
- if (strchr("0123456789ABCDEFabcdef", *(stream + 2)) && *(stream + 2) != '\0') {
- *consumed = 3;
- if (*(stream + 2) <= '9') {
- *result = *(stream + 2) - '0';
- } else if (*(stream + 2) <= 'F') {
- *result = *(stream + 2) - 'A' + 10;
- } else {
- *result = *(stream + 2) - 'a' + 10;
- }
- } else {
- ast_log(LOG_ERROR, "Illegal character '%c' in hexadecimal string\n", *(stream + 2));
- return -1;
- }
- if (strchr("0123456789ABCDEFabcdef", *(stream + 3)) && *(stream + 3) != '\0') {
- *consumed = 4;
- *result <<= 4;
- if (*(stream + 3) <= '9') {
- *result += *(stream + 3) - '0';
- } else if (*(stream + 3) <= 'F') {
- *result += *(stream + 3) - 'A' + 10;
- } else {
- *result += *(stream + 3) - 'a' + 10;
- }
- }
- break;
- case '0':
- /* Octal */
- *consumed = 2;
- for (i = 2; ; i++) {
- if (strchr("01234567", *(stream + i)) && *(stream + i) != '\0') {
- (*consumed)++;
- ast_debug(5, "result was %d, ", *result);
- *result <<= 3;
- *result += *(stream + i) - '0';
- ast_debug(5, "is now %d\n", *result);
- } else {
- break;
- }
- }
- break;
- default:
- *result = *(stream + 1);
- }
- } else {
- *result = *stream;
- *consumed = 1;
- }
- return 0;
- }
- char *ast_get_encoded_str(const char *stream, char *result, size_t result_size)
- {
- char *cur = result;
- size_t consumed;
- while (cur < result + result_size - 1 && !ast_get_encoded_char(stream, cur, &consumed)) {
- cur++;
- stream += consumed;
- }
- *cur = '\0';
- return result;
- }
- int ast_str_get_encoded_str(struct ast_str **str, int maxlen, const char *stream)
- {
- char next, *buf;
- size_t offset = 0;
- size_t consumed;
- if (strchr(stream, '\\')) {
- while (!ast_get_encoded_char(stream, &next, &consumed)) {
- if (offset + 2 > ast_str_size(*str) && maxlen > -1) {
- ast_str_make_space(str, maxlen > 0 ? maxlen : (ast_str_size(*str) + 48) * 2 - 48);
- }
- if (offset + 2 > ast_str_size(*str)) {
- break;
- }
- buf = ast_str_buffer(*str);
- buf[offset++] = next;
- stream += consumed;
- }
- buf = ast_str_buffer(*str);
- buf[offset++] = '\0';
- ast_str_update(*str);
- } else {
- ast_str_set(str, maxlen, "%s", stream);
- }
- return 0;
- }
- void ast_close_fds_above_n(int n)
- {
- closefrom(n + 1);
- }
- int ast_safe_fork(int stop_reaper)
- {
- sigset_t signal_set, old_set;
- int pid;
- /* Don't let the default signal handler for children reap our status */
- if (stop_reaper) {
- ast_replace_sigchld();
- }
- /* GCC 4.9 gives a bogus "right-hand operand of comma expression has
- * no effect" warning */
- (void) sigfillset(&signal_set);
- pthread_sigmask(SIG_BLOCK, &signal_set, &old_set);
- pid = fork();
- if (pid != 0) {
- /* Fork failed or parent */
- pthread_sigmask(SIG_SETMASK, &old_set, NULL);
- if (!stop_reaper && pid > 0) {
- struct zombie *cur = ast_calloc(1, sizeof(*cur));
- if (cur) {
- cur->pid = pid;
- AST_LIST_LOCK(&zombies);
- AST_LIST_INSERT_TAIL(&zombies, cur, list);
- AST_LIST_UNLOCK(&zombies);
- if (shaun_of_the_dead_thread == AST_PTHREADT_NULL) {
- if (ast_pthread_create_background(&shaun_of_the_dead_thread, NULL, shaun_of_the_dead, NULL)) {
- ast_log(LOG_ERROR, "Shaun of the Dead wants to kill zombies, but can't?!!\n");
- shaun_of_the_dead_thread = AST_PTHREADT_NULL;
- }
- }
- }
- }
- return pid;
- } else {
- /* Child */
- #ifdef HAVE_CAP
- cap_set_proc(child_cap);
- #endif
- /* Before we unblock our signals, return our trapped signals back to the defaults */
- signal(SIGHUP, SIG_DFL);
- signal(SIGCHLD, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGURG, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGPIPE, SIG_DFL);
- signal(SIGXFSZ, SIG_DFL);
- /* unblock important signal handlers */
- if (pthread_sigmask(SIG_UNBLOCK, &signal_set, NULL)) {
- ast_log(LOG_WARNING, "unable to unblock signals: %s\n", strerror(errno));
- _exit(1);
- }
- return pid;
- }
- }
- void ast_safe_fork_cleanup(void)
- {
- ast_unreplace_sigchld();
- }
- int ast_app_parse_timelen(const char *timestr, int *result, enum ast_timelen unit)
- {
- int res;
- char u[10];
- #ifdef HAVE_LONG_DOUBLE_WIDER
- long double amount;
- #define FMT "%30Lf%9s"
- #else
- double amount;
- #define FMT "%30lf%9s"
- #endif
- if (!timestr) {
- return -1;
- }
- res = sscanf(timestr, FMT, &amount, u);
- if (res == 0 || res == EOF) {
- #undef FMT
- return -1;
- } else if (res == 2) {
- switch (u[0]) {
- case 'h':
- case 'H':
- unit = TIMELEN_HOURS;
- if (u[1] != '\0') {
- return -1;
- }
- break;
- case 's':
- case 'S':
- unit = TIMELEN_SECONDS;
- if (u[1] != '\0') {
- return -1;
- }
- break;
- case 'm':
- case 'M':
- if (toupper(u[1]) == 'S') {
- unit = TIMELEN_MILLISECONDS;
- if (u[2] != '\0') {
- return -1;
- }
- } else if (u[1] == '\0') {
- unit = TIMELEN_MINUTES;
- } else {
- return -1;
- }
- break;
- default:
- return -1;
- }
- }
- switch (unit) {
- case TIMELEN_HOURS:
- amount *= 60;
- /* fall-through */
- case TIMELEN_MINUTES:
- amount *= 60;
- /* fall-through */
- case TIMELEN_SECONDS:
- amount *= 1000;
- /* fall-through */
- case TIMELEN_MILLISECONDS:
- ;
- }
- *result = amount > INT_MAX ? INT_MAX : (int) amount;
- return 0;
- }
- struct stasis_topic *ast_queue_topic_all(void)
- {
- return queue_topic_all;
- }
- struct stasis_topic *ast_queue_topic(const char *queuename)
- {
- return stasis_topic_pool_get_topic(queue_topic_pool, queuename);
- }
- static void app_cleanup(void)
- {
- #ifdef HAS_CAP
- cap_free(child_cap);
- #endif
- ao2_cleanup(queue_topic_pool);
- queue_topic_pool = NULL;
- ao2_cleanup(queue_topic_all);
- queue_topic_all = NULL;
- }
- int app_init(void)
- {
- ast_register_cleanup(app_cleanup);
- #ifdef HAVE_CAP
- child_cap = cap_from_text("cap_net_admin-eip");
- #endif
- queue_topic_all = stasis_topic_create("queue:all");
- if (!queue_topic_all) {
- return -1;
- }
- queue_topic_pool = stasis_topic_pool_create(queue_topic_all);
- if (!queue_topic_pool) {
- return -1;
- }
- return 0;
- }
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