Utility functions. More...

#include "asterisk/network.h"
#include <time.h>
#include <unistd.h>
#include <string.h>
#include "asterisk/lock.h"
#include "asterisk/logger.h"
#include "asterisk/localtime.h"
#include "asterisk/stringfields.h"
#include "asterisk/strings.h"

Include dependency graph for utils.h:

Go to the source code of this file.

Data Structures
struct	ast_eid
	An Entity ID is essentially a MAC address, brief and unique. More...
struct	ast_flags
	Structure used to handle boolean flags. More...
struct	ast_flags64
	Structure used to handle a large number of boolean flags == used only in app_dial? More...
struct	ast_hostent
struct	ast_http_digest
Defines
#define	ARRAY_LEN(a) (size_t) (sizeof(a) / sizeof(0[a]))
#define	ast_align_for(offset, type) (((offset + __alignof__(type) - 1) / __alignof__(type)) * __alignof__(type))
	Increase offset so it is a multiple of the required alignment of type.
#define	ast_alignof(type) __alignof__(type)
	Return the number of bytes used in the alignment of type.
#define	ast_alloca(size) __builtin_alloca(size)
	call __builtin_alloca to ensure we get gcc builtin semantics
#define	ast_asprintf(ret, fmt,...) _ast_asprintf((ret), __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, __VA_ARGS__)
	A wrapper for asprintf()
#define	ast_assert(a)
#define	AST_BACKGROUND_STACKSIZE AST_STACKSIZE
#define	ast_calloc(num, len) _ast_calloc((num), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for calloc()
#define	ast_calloc_cache(num, len) _ast_calloc((num), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for calloc() for use in cache pools.
#define	ast_clear_flag(p, flag)
#define	ast_clear_flag64(p, flag)
#define	ast_clear_flag_nonstd(p, flag)
#define	ast_copy_flags(dest, src, flagz)
#define	ast_copy_flags64(dest, src, flagz)
#define	ast_copy_flags_nonstd(dest, src, flagz)
#define	AST_FLAGS_ALL UINT_MAX
#define	ast_free free
	free() wrapper
#define	ast_free_ptr ast_free
#define	ast_make_room_for(offset, type) (((offset + (2 * __alignof__(type) - 1)) / __alignof__(type)) * __alignof__(type))
	Increase offset by the required alignment of type and make sure it is a multiple of said alignment.
#define	ast_malloc(len) _ast_malloc((len), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for malloc()
#define	ast_pthread_create(a, b, c, d)
#define	ast_pthread_create_background(a, b, c, d)
#define	ast_pthread_create_detached(a, b, c, d)
#define	ast_pthread_create_detached_background(a, b, c, d)
#define	ast_realloc(p, len) _ast_realloc((p), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for realloc()
#define	ast_set2_flag(p, value, flag)
#define	ast_set2_flag64(p, value, flag)
#define	ast_set2_flag_nonstd(p, value, flag)
#define	ast_set_flag(p, flag)
#define	ast_set_flag64(p, flag)
#define	ast_set_flag_nonstd(p, flag)
#define	ast_set_flags_to(p, flag, value)
#define	ast_set_flags_to64(p, flag, value)
#define	AST_STACKSIZE (((sizeof(void ) 8 * 8) - 16) * 1024)
#define	ast_std_calloc calloc
#define	ast_std_free free
#define	ast_std_malloc malloc
#define	ast_std_realloc realloc
#define	ast_strdup(str) _ast_strdup((str), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for strdup()
#define	ast_strndup(str, len) _ast_strndup((str), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)
	A wrapper for strndup()
#define	ast_test_flag(p, flag)
#define	ast_test_flag64(p, flag)
#define	ast_test_flag_nonstd(p, flag) ((p)->flags & (flag))
#define	ast_vasprintf(ret, fmt, ap) _ast_vasprintf((ret), __FILE__, __LINE__, __PRETTY_FUNCTION__, (fmt), (ap))
	A wrapper for vasprintf()
#define	localtime_r __dont_use_localtime_r_use_ast_localtime_instead__
#define	MALLOC_FAILURE_MSG ast_log(LOG_ERROR, "Memory Allocation Failure in function %s at line %d of %s\n", func, lineno, file);
#define	MAX(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); ((__a < __b) ? __b : __a);})
#define	MIN(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); ((__a > __b) ? __b : __a);})
#define	RAII_VAR(vartype, varname, initval, dtor)
	Declare a variable that will call a destructor function when it goes out of scope.
Functions
int	_ast_asprintf (char *ret, const char file, int lineno, const char func, const char fmt,...)
void *	_ast_calloc (size_t num, size_t len, const char file, int lineno, const char func)
void *	_ast_malloc (size_t len, const char file, int lineno, const char func)
void *	_ast_realloc (void p, size_t len, const char file, int lineno, const char *func)
char *	_ast_strdup (const char str, const char file, int lineno, const char *func)
char *	_ast_strndup (const char str, size_t len, const char file, int lineno, const char *func)
int	_ast_vasprintf (char *ret, const char file, int lineno, const char func, const char fmt, va_list ap)
int	ast_base64decode (unsigned char dst, const char src, int max)
	Decode data from base64.
int	ast_base64encode (char dst, const unsigned char src, int srclen, int max)
	Encode data in base64.
int	ast_base64encode_full (char dst, const unsigned char src, int srclen, int max, int linebreaks)
	encode text to BASE64 coding
int	ast_careful_fwrite (FILE f, int fd, const char s, size_t len, int timeoutms)
	Write data to a file stream with a timeout.
int	ast_carefulwrite (int fd, char *s, int len, int timeoutms)
	Try to write string, but wait no more than ms milliseconds before timing out.
void	ast_do_crash (void)
	Force a crash if DO_CRASH is defined.
int	ast_eid_cmp (const struct ast_eid eid1, const struct ast_eid eid2)
	Compare two EIDs.
char *	ast_eid_to_str (char s, int maxlen, struct ast_eid eid)
void	ast_enable_packet_fragmentation (int sock)
	Disable PMTU discovery on a socket.
char *	ast_escape_quoted (const char string, char outbuf, int buflen)
	Escape characters found in a quoted string.
struct hostent *	ast_gethostbyname (const char host, struct ast_hostent hp)
	Thread-safe gethostbyname function to use in Asterisk.
void	ast_md5_hash (char output, const char input)
	Produces MD5 hash based on input string.
int	ast_mkdir (const char *path, int mode)
	Recursively create directory path.
int	ast_parse_digest (const char digest, struct ast_http_digest d, int request, int pedantic)
	Parse digest authorization header.
char *	ast_process_quotes_and_slashes (char *start, char find, char replace_with)
	Process a string to find and replace characters.
int	ast_pthread_create_detached_stack (pthread_t thread, pthread_attr_t attr, void (start_routine)(void ), void data, size_t stacksize, const char file, const char caller, int line, const char *start_fn)
int	ast_pthread_create_stack (pthread_t thread, pthread_attr_t attr, void (start_routine)(void ), void data, size_t stacksize, const char file, const char caller, int line, const char *start_fn)
long int	ast_random (void)
void	ast_register_thread (char *name)
void	ast_set_default_eid (struct ast_eid *eid)
	Fill in an ast_eid with the default eid of this machine.
void	ast_sha1_hash (char output, const char input)
	Produces SHA1 hash based on input string.
static force_inline void	ast_slinear_saturated_add (short input, short value)
static force_inline void	ast_slinear_saturated_divide (short input, short value)
static force_inline void	ast_slinear_saturated_multiply (short input, short value)
static force_inline void	ast_slinear_saturated_subtract (short input, short value)
int	ast_str_to_eid (struct ast_eid eid, const char s)
	Convert a string into an EID.
void	ast_unregister_thread (void *id)
void	ast_uri_decode (char *s)
	Decode URI, URN, URL (overwrite string)
char *	ast_uri_encode (const char string, char outbuf, int buflen, int do_special_char)
	Turn text string to URI-encoded XX version.
int	ast_utils_init (void)
char *	ast_utils_which (const char binary, char fullpath, size_t fullpath_size)
	Resolve a binary to a full pathname.
int	ast_wait_for_input (int fd, int ms)
int	ast_xml_escape (const char string, char outbuf, size_t buflen)
	Escape reserved characters for use in XML.
Variables
unsigned int	__unsigned_int_flags_dummy
uint64_t	__unsigned_int_flags_dummy64
struct ast_eid	ast_eid_default
	Global EID.

Detailed Description

Utility functions.

Definition in file utils.h.

Define Documentation

#define ARRAY_LEN ( a ) (size_t) (sizeof(a) / sizeof(0[a]))

Definition at line 689 of file utils.h.

#define ast_align_for	(	offset,
		type
	)	(((offset + __alignof__(type) - 1) / __alignof__(type)) * __alignof__(type))

Increase offset so it is a multiple of the required alignment of type.

Parameters:

offset	The value that should be increased.
type	The data type that offset should be aligned to.

Returns:: The smallest multiple of alignof(type) larger than or equal to offset.

See also:: ast_make_room_for()

Many systems prefer integers to be stored on aligned on memory locations. This macro will increase an offset so a value of the supplied type can be safely be stored on such a memory location.

Examples: ast_align_for(0x17, int64_t) ==> 0x18 ast_align_for(0x18, int64_t) ==> 0x18 ast_align_for(0x19, int64_t) ==> 0x20

Don't mind the ugliness, the compiler will optimize it.

Definition at line 770 of file utils.h.

Referenced by __ast_string_field_ptr_build_va().

#define ast_alignof ( type ) __alignof__(type)

Return the number of bytes used in the alignment of type.

Parameters:

type

Returns:: The number of bytes required for alignment.

This is really just __alignof__(), but tucked away in this header so we don't have to look at the nasty underscores in the source.

Definition at line 750 of file utils.h.

Referenced by __ast_string_field_alloc_space(), and __ast_string_field_ptr_build_va().

#define ast_alloca ( size ) __builtin_alloca(size)

call __builtin_alloca to ensure we get gcc builtin semantics

Parameters:

size	The size of the buffer we want allocated

This macro will attempt to allocate memory from the stack. If it fails you won't get a NULL returned, but a SEGFAULT if you're lucky.

Definition at line 643 of file utils.h.

Referenced by __ast_verbose_ap(), _while_exec(), ael2_semantic_check(), aji_start_sasl(), alsa_card_init(), append_mailbox(), ast_control_streamfile(), ast_dsp_process(), ast_event_append_ie_str(), ast_event_check_subscriber(), ast_event_new(), ast_fileexists(), ast_lock_path_flock(), ast_lock_path_lockfile(), ast_mkdir(), ast_openstream_full(), ast_openvstream(), ast_pthread_create_detached_stack(), ast_pthread_create_stack(), ast_remotecontrol(), ast_say_counted_adjective(), ast_say_counted_noun(), ast_unlock_path_flock(), ast_unlock_path_lockfile(), ast_waitfor_nandfds(), ast_writefile(), astman_append_json(), builtin_automixmonitor(), builtin_automonitor(), callerid_feed(), callerid_feed_jp(), CB_ADD_LEN(), config_module(), cpeid_exec(), create_addr_from_peer(), cut_internal(), decode_frame(), dictate_exec(), dundi_decrypt(), dundi_encrypt(), dundi_precache_internal(), encrypt_frame(), feature_request_and_dial(), festival_exec(), find_table(), func_mchan_read(), function_fieldnum_helper(), function_fieldqty_helper(), handle_cli_config_reload(), handle_command_response(), handle_exec(), import_helper(), inprocess_count(), listfilter(), local_attended_transfer(), lua_get_variable(), lua_get_variable_value(), lua_read_extensions_file(), masquerade_colp_transfer(), mixmonitor_exec(), my_ast_get_channel_by_name_locked(), pbx_builtin_importvar(), pbx_load_module(), pbx_substitute_variables_helper_full(), queue_file(), realtime_exec(), replace(), shared_read(), shared_write(), shift_pop(), sip_addheader(), sms_generate(), socket_process(), sort_internal(), ssl_write(), state_notify_build_xml(), static_callback(), try_firmware(), unshift_push(), vm_change_password(), vm_delete(), and vm_play_folder_name_gr().

#define ast_asprintf	(	ret,
		fmt,
		...
	)	_ast_asprintf((ret), __FILE__, __LINE__, __PRETTY_FUNCTION__, fmt, __VA_ARGS__)

A wrapper for asprintf()

ast_asprintf() is a wrapper for asprintf() that will generate an Asterisk log message in the case that the allocation fails.

The arguments and return value are the same as asprintf()

Definition at line 604 of file utils.h.

#define ast_assert ( a )

Definition at line 728 of file utils.h.

Referenced by __ast_string_field_alloc_space(), _ast_odbc_request_obj2(), ack_ticks(), agent_call(), append_ie(), ast_cc_is_recall(), ast_channel_change_linkedid(), ast_channel_get_cc_config_params(), ast_db_get(), ast_hangup(), ast_register_thread(), ast_rtcp_read(), ast_rtp_read(), ast_sched_del(), ast_udptl_read(), ast_xml_escape(), cc_generic_agent_start_monitoring(), cc_generic_agent_start_offer_timer(), cc_generic_monitor_cancel_available_timer(), check_callback_sanity(), create_jb(), create_new_sip_etag(), dahdi_pri_cc_agent_init(), db_sync_thread(), determine_sip_publish_type(), find_timer(), handle_response_publish(), INTERNAL_OBJ(), jb_get_and_deliver(), odbc_obj_connect(), parkinglot_destroy(), pthread_timer_ack(), publish_expire(), queue_exec(), ring_entry(), security_event_cb(), sig_pri_call(), sip_cc_agent_init(), sip_cc_monitor_unsuspend(), and ss7_linkset().

#define AST_BACKGROUND_STACKSIZE AST_STACKSIZE

Definition at line 394 of file utils.h.

#define ast_calloc	(	num,
		len
	)	_ast_calloc((num), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for calloc()

ast_calloc() is a wrapper for calloc() that will generate an Asterisk log message in the case that the allocation fails.

The arguments and return value are the same as calloc()

Definition at line 487 of file utils.h.

#define ast_calloc_cache	(	num,
		len
	)	_ast_calloc((num), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for calloc() for use in cache pools.

ast_calloc_cache() is a wrapper for calloc() that will generate an Asterisk log message in the case that the allocation fails. When memory debugging is in use, the memory allocated by this function will be marked as 'cache' so it can be distinguished from normal memory allocations.

The arguments and return value are the same as calloc()

Definition at line 512 of file utils.h.

#define ast_clear_flag	(	p,
		flag
	)

Definition at line 77 of file utils.h.

Referenced by __analog_ss_thread(), __ast_pbx_run(), __ast_read(), __do_deliver(), __transmit_response(), action_redirect(), aji_create_client(), aji_filter_roster(), aji_load_config(), analog_ss_thread(), ast_audiohook_set_mute(), ast_autoservice_stop(), ast_bridge_call(), ast_cdr_reset(), ast_cdr_specialized_reset(), ast_channel_bridge(), ast_channel_undefer_dtmf(), ast_deactivate_generator(), ast_do_masquerade(), ast_generic_bridge(), ast_jb_destroy(), ast_jb_put(), ast_rtp_raw_write(), ast_sendtext(), ast_settimeout_full(), ast_speech_start(), ast_tls_read_conf(), ast_translate(), ast_waitfor_nandfds(), ast_waitfordigit_full(), ast_write(), bridge_channel_feature(), bridge_p2p_rtp_write(), builtin_atxfer(), change_hold_state(), change_spy_mode(), channel_spy(), chanspy_exec(), check_goto_on_transfer(), check_pendings(), common_exec(), config_function_read(), config_text_file_load(), dahdi_read(), dahdiscan_exec(), dial_exec_full(), dictate_exec(), disa_exec(), dundi_lookup_local(), extenspy_exec(), forward_message(), handle_command_response(), handle_common_options(), handle_exec(), handle_request_bye(), handle_request_invite(), handle_request_refer(), handle_response(), handle_response_notify(), handle_speechrecognize(), handle_t38_options(), handle_verbose(), init_acf_query(), initialize_udptl(), internal_deactivate_generator(), linear_alloc(), load_config(), load_module(), load_moh_classes(), local_ast_moh_stop(), local_attended_transfer(), local_hangup(), main(), manage_parked_call(), manager_optimize_away(), odbc_load_module(), park_call_full(), parkandannounce_exec(), parse_options(), phone_read(), playtones_alloc(), process_sdp(), register_verify(), reload_config(), reset_transaction(), set_config(), set_config_flags(), setup_dahdi_int(), sip_call(), sip_dtmfmode(), sip_hangup(), sip_reload(), sip_set_rtp_peer(), socket_process(), speech_background(), try_calling(), update_call_counter(), update_connectedline(), and waitstream_core().

#define ast_clear_flag64	(	p,
		flag
	)

Definition at line 134 of file utils.h.

Referenced by authenticate_verify(), build_peer(), build_user(), create_addr(), do_forward(), find_conf(), find_conf_realtime(), iax2_destroy_helper(), iax2_setoption(), set_config(), set_config_destroy(), socket_process(), and wait_for_answer().

#define ast_clear_flag_nonstd	(	p,
		flag
	)

Value:

do { \
               ((p)->flags &= ~(flag)); \
               } while(0)

Definition at line 180 of file utils.h.

Referenced by build_transactions(), cache_lookup_internal(), dundi_lookup_local(), dundi_prop_precache(), and handle_command_response().

#define ast_copy_flags	(	dest,
		src,
		flagz
	)

#define ast_copy_flags64	(	dest,
		src,
		flagz
	)

Definition at line 141 of file utils.h.

Referenced by __find_callno(), build_peer(), build_user(), check_access(), create_addr(), dial_exec_full(), find_conf_realtime(), iax2_request(), realtime_peer(), and wait_for_answer().

#define ast_copy_flags_nonstd	(	dest,
		src,
		flagz
	)

Value:

do { \
               (dest)->flags &= ~(flagz); \
               (dest)->flags |= ((src)->flags & (flagz)); \
               } while (0)

Definition at line 184 of file utils.h.

#define AST_FLAGS_ALL UINT_MAX

#define ast_free free

free() wrapper

ast_free_ptr should be used when a function pointer for free() needs to be passed as the argument to a function. Otherwise, astmm will cause seg faults.

Definition at line 451 of file utils.h.

#define ast_free_ptr ast_free

Definition at line 452 of file utils.h.

#define ast_make_room_for	(	offset,
		type
	)	(((offset + (2 * __alignof__(type) - 1)) / __alignof__(type)) * __alignof__(type))

Increase offset by the required alignment of type and make sure it is a multiple of said alignment.

Parameters:

offset	The value that should be increased.
type	The data type that room should be reserved for.

Returns:: The smallest multiple of alignof(type) larger than or equal to offset plus alignof(type).

See also:: ast_align_for()

A use case for this is when prepending length fields of type int to a buffer. If you keep the offset a multiple of the alignment of the integer type, a next block of length+buffer will have the length field automatically aligned.

Examples: ast_make_room_for(0x17, int64_t) ==> 0x20 ast_make_room_for(0x18, int64_t) ==> 0x20 ast_make_room_for(0x19, int64_t) ==> 0x28

Don't mind the ugliness, the compiler will optimize it.

Definition at line 793 of file utils.h.

Referenced by __ast_string_field_alloc_space(), and __ast_string_field_ptr_build_va().

#define ast_malloc ( len ) _ast_malloc((len), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for malloc()

ast_malloc() is a wrapper for malloc() that will generate an Asterisk log message in the case that the allocation fails.

The argument and return value are the same as malloc()

Definition at line 464 of file utils.h.

#define ast_pthread_create	(	a,
		b,
		c,
		d
	)

Value:

ast_pthread_create_stack(a, b, c, d,         \
      0, __FILE__, __FUNCTION__, __LINE__, #c)

Definition at line 408 of file utils.h.

Referenced by accept_thread(), ast_bridge_impart(), ast_dial_run(), ast_features_init(), ast_taskprocessor_get(), bridge_call_thread_launch(), bridge_channel_join(), build_calendar(), handle_callforward_button(), handle_enbloc_call_message(), handle_offhook_message(), handle_soft_key_event_message(), handle_stimulus_message(), handle_transfer_button(), HandleCallOutgoing(), init_logger(), load_module(), multiplexed_add_or_remove(), restart_monitor(), setup_dahdi_int(), sla_load_config(), and start_poll_thread().

#define ast_pthread_create_background	(	a,
		b,
		c,
		d
	)

Value:

ast_pthread_create_stack(a, b, c, d,         \
      AST_BACKGROUND_STACKSIZE,        \
      __FILE__, __FUNCTION__, __LINE__, #c)

Definition at line 416 of file utils.h.

Referenced by add_notify(), aji_reload(), ast_autoservice_start(), ast_device_state_engine_init(), ast_enable_distributed_devstate(), ast_makesocket(), ast_safe_fork(), ast_sched_thread_create(), ast_tcptls_server_start(), astdb_init(), calendar_event_notify(), conf_run(), config_load(), do_monitor(), do_reload(), find_idle_thread(), init_app_class(), init_timing_thread(), load_module(), local_ast_moh_start(), pri_dchannel(), restart_monitor(), restart_pktc_thread(), sig_pri_start_pri(), smdi_load(), start_network_thread(), and start_stream().

#define ast_pthread_create_detached	(	a,
		b,
		c,
		d
	)

Value:

ast_pthread_create_detached_stack(a, b, c, d,      \
      0, __FILE__, __FUNCTION__, __LINE__, #c)

Definition at line 412 of file utils.h.

Referenced by __analog_handle_event(), action_originate(), analog_handle_init_event(), analog_ss_thread_start(), ast_pbx_outgoing_app(), ast_pbx_outgoing_exten(), ast_pbx_start(), dahdi_handle_event(), do_monitor(), dundi_answer_entity(), dundi_answer_query(), dundi_prop_precache(), handle_hd_hf(), handle_init_event(), launch_service(), main(), mwi_thread(), pri_dchannel(), and spawn_dp_lookup().

#define ast_pthread_create_detached_background	(	a,
		b,
		c,
		d
	)

Value:

ast_pthread_create_detached_stack(a, b, c, d,      \
      AST_BACKGROUND_STACKSIZE,        \
      __FILE__, __FUNCTION__, __LINE__, #c)

Definition at line 421 of file utils.h.

Referenced by ast_cdr_submit_batch(), ast_tcptls_server_root(), cc_generic_agent_recall(), conf_run(), iax_park(), launch_monitor_thread(), listener(), load_module(), meetme_menu_admin_extended(), sip_park(), sip_pickup(), sip_prepare_socket(), sla_handle_dial_state_event(), and sla_station_exec().

#define ast_realloc	(	p,
		len
	)	_ast_realloc((p), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for realloc()

ast_realloc() is a wrapper for realloc() that will generate an Asterisk log message in the case that the allocation fails.

The arguments and return value are the same as realloc()

Definition at line 523 of file utils.h.

#define ast_set2_flag	(	p,
		value,
		flag
	)

#define ast_set2_flag64	(	p,
		value,
		flag
	)

Definition at line 151 of file utils.h.

Referenced by build_peer(), build_user(), check_access(), dial_exec_full(), and set_config().

#define ast_set2_flag_nonstd	(	p,
		value,
		flag
	)

Definition at line 189 of file utils.h.

#define ast_set_flag	(	p,
		flag
	)

Definition at line 70 of file utils.h.

Referenced by __analog_ss_thread(), __ast_pbx_run(), __ast_read(), __ast_request_and_dial(), __sip_subscribe_mwi_do(), _macro_exec(), action_redirect(), aji_create_client(), aji_load_config(), analog_ss_thread(), app_exec(), apply_peer(), ast_audiohook_set_mute(), ast_autoservice_start(), ast_bridge_call(), ast_bridge_features_set_flag(), ast_bridge_new(), ast_bridge_timelimit(), ast_call(), ast_cdr_detach(), ast_cdr_fork(), ast_cdr_merge(), ast_cdr_reset(), ast_cdr_specialized_reset(), ast_channel_bridge(), ast_channel_defer_dtmf(), ast_do_masquerade(), ast_do_pickup(), ast_generic_bridge(), ast_hangup(), ast_jb_do_usecheck(), ast_jb_put(), ast_rtp_change_source(), ast_rtp_local_bridge(), ast_rtp_raw_write(), ast_rtp_read(), ast_rtp_stop(), ast_rtp_update_source(), ast_settimeout_full(), ast_speech_change_state(), AST_TEST_DEFINE(), ast_tls_read_conf(), ast_waitfor_nandfds(), ast_waitfordigit_full(), asyncgoto_exec(), bridge_channel_feature(), bridge_exec(), bridge_p2p_rtp_write(), build_peer(), builtin_atxfer(), builtin_blindtransfer(), cb_extensionstate(), cc_generic_agent_init(), change_hold_state(), change_spy_mode(), channel_spy(), chanspy_exec(), check_bridge(), check_peer_ok(), check_user_full(), check_via(), common_exec(), create_addr_from_peer(), create_transaction(), dahdiscan_exec(), destroy_trans(), dial_exec_full(), dictate_exec(), directory_exec(), disa_exec(), do_register(), dundi_encrypt(), dundi_lookup_local(), dundi_send(), extenspy_exec(), find_peer(), find_user_realtime(), free_vm_users(), handle_command_response(), handle_common_options(), handle_exec(), handle_invite_replaces(), handle_queue_reload(), handle_request_invite(), handle_request_refer(), handle_request_subscribe(), handle_response(), handle_response_invite(), handle_t38_options(), handle_verbose(), hangupcalls(), hanguptree(), init_acf_query(), init_app_class(), init_files_class(), interpret_t38_parameters(), launch_monitor_thread(), leave_voicemail(), linear_alloc(), load_config(), load_moh_classes(), local_alloc(), local_ast_moh_start(), local_attended_transfer(), local_call(), local_hangup(), login_exec(), main(), manage_parked_call(), manager_queue_reload(), manager_sipnotify(), minivm_greet_exec(), new_outgoing(), nocdr_exec(), odbc_load_module(), park_call_full(), parked_call_exec(), parse_options(), playtones_alloc(), post_cdr(), process_applicationmap_line(), process_cn_rfc3389(), process_crypto(), process_sdp(), qualify_peer(), record_exec(), register_verify(), reload_config(), ring_entry(), set_bridge_features_on_config(), set_config_flags(), set_insecure_flags(), sip_answer(), sip_call(), sip_cc_agent_init(), sip_cc_agent_respond(), sip_cc_monitor_request_cc(), sip_cli_notify(), sip_dtmfmode(), sip_hangup(), sip_indicate(), sip_park_thread(), sip_poke_peer(), sip_reinvite_retry(), sip_send_mwi_to_peer(), sip_sendhtml(), sip_set_rtp_peer(), sip_set_udptl_peer(), sip_write(), socket_process(), start_spying(), tonepair_alloc(), transmit_publish(), transmit_register(), transmit_reinvite_with_sdp(), try_calling(), update_call_counter(), update_connectedline(), vm_execmain(), volume_write(), and waitstream_core().

#define ast_set_flag64	(	p,
		flag
	)

#define ast_set_flag_nonstd	(	p,
		flag
	)

Value:

do { \
               ((p)->flags |= (flag)); \
               } while(0)

Definition at line 176 of file utils.h.

Referenced by dundi_lookup_internal(), dundi_query_eid_internal(), and handle_command_response().

#define ast_set_flags_to	(	p,
		flag,
		value
	)

Definition at line 104 of file utils.h.

#define ast_set_flags_to64	(	p,
		flag,
		value
	)

Definition at line 161 of file utils.h.

Referenced by build_peer(), build_user(), and set_config().

#define AST_STACKSIZE (((sizeof(void *) * 8 * 8) - 16) * 1024)

Definition at line 389 of file utils.h.

Referenced by ast_pthread_create_stack().

#define ast_std_calloc calloc

Definition at line 441 of file utils.h.

#define ast_std_free free

Definition at line 443 of file utils.h.

#define ast_std_malloc malloc

Definition at line 440 of file utils.h.

#define ast_std_realloc realloc

Definition at line 442 of file utils.h.

#define ast_strdup ( str ) _ast_strdup((str), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for strdup()

ast_strdup() is a wrapper for strdup() that will generate an Asterisk log message in the case that the allocation fails.

ast_strdup(), unlike strdup(), can safely accept a NULL argument. If a NULL argument is provided, ast_strdup will return NULL without generating any kind of error log message.

The argument and return value are the same as strdup()

Definition at line 550 of file utils.h.

#define ast_strndup	(	str,
		len
	)	_ast_strndup((str), (len), __FILE__, __LINE__, __PRETTY_FUNCTION__)

A wrapper for strndup()

ast_strndup() is a wrapper for strndup() that will generate an Asterisk log message in the case that the allocation fails.

ast_strndup(), unlike strndup(), can safely accept a NULL argument for the string to duplicate. If a NULL argument is provided, ast_strdup will return NULL without generating any kind of error log message.

The arguments and return value are the same as strndup()

Definition at line 579 of file utils.h.

#define ast_test_flag	(	p,
		flag
	)

Definition at line 63 of file utils.h.

Referenced by __ast_channel_masquerade(), __ast_pbx_run(), __ast_queue_frame(), __ast_read(), __sip_destroy(), __ssl_setup(), __transmit_response(), _ast_odbc_request_obj2(), _macro_exec(), _sip_show_peer(), _sip_show_peers_one(), acf_odbc_read(), action_login(), add_agent(), add_codec_to_sdp(), add_rpid(), add_sdp(), aji_build_publish_skeleton(), aji_cli_purge_pubsub_nodes(), aji_create_client(), aji_handle_pubsub_error(), aji_handle_subscribe(), aji_pruneregister(), aji_publish_device_state(), aji_pubsub_subscribe(), app_exec(), ast_audiohook_write_frame(), ast_autoservice_start(), ast_bridge_call(), ast_bridge_end_dtmf(), ast_bridge_merge(), ast_call(), ast_can_pickup(), ast_cdr_answer(), ast_cdr_appenduserfield(), ast_cdr_busy(), ast_cdr_end(), ast_cdr_failed(), ast_cdr_fork(), ast_cdr_init(), ast_cdr_merge(), ast_cdr_noanswer(), ast_cdr_reset(), ast_cdr_setaccount(), ast_cdr_setamaflags(), ast_cdr_setanswer(), ast_cdr_setapp(), ast_cdr_setcid(), ast_cdr_setdestchan(), ast_cdr_setdisposition(), ast_cdr_setpeeraccount(), ast_cdr_setuserfield(), ast_cdr_setvar(), ast_cdr_specialized_reset(), ast_cdr_start(), ast_cdr_update(), ast_channel_bridge(), ast_channel_defer_dtmf(), ast_config_internal_load(), ast_do_masquerade(), ast_explicit_goto(), ast_frisolate(), ast_generic_bridge(), ast_hangup(), ast_indicate_data(), ast_jb_destroy(), ast_jb_do_usecheck(), ast_jb_empty_and_reset(), ast_jb_get_and_deliver(), ast_jb_get_when_to_wakeup(), ast_jb_put(), ast_moh_files_next(), ast_pbx_run_args(), ast_pbx_start(), ast_quiet_chan(), ast_raw_answer(), ast_readstring_full(), ast_rtp_raw_write(), ast_sendtext(), ast_settimeout_full(), ast_softhangup_nolock(), ast_streamfile(), AST_TEST_DEFINE(), ast_transfer(), ast_translate(), ast_waitfordigit_full(), ast_write(), auth_exec(), authenticate_verify(), bridge_channel_join(), bridge_check_dissolve(), bridge_exec(), bridge_p2p_rtp_write(), build_peer(), build_radius_record(), build_via(), builtin_atxfer(), call_forward_inherit(), callback_dialoptions(), cb_extensionstate(), cdr_read(), cdr_write(), change_hold_state(), channel_data_add_flags(), channel_spy(), chanspy_exec(), check_bridge(), check_peer_ok(), check_pendings(), check_post(), check_rtp_timeout(), check_user_full(), close_mailbox(), common_exec(), complete_sip_peer(), complete_sip_registered_peer(), confbridge_exec(), config_text_file_load(), connectedline_write(), controlplayback_exec(), copy_via_headers(), create_addr_from_peer(), create_jb(), destroy_trans(), dial_exec_full(), dialog_initialize_rtp(), dictate_exec(), directory_exec(), disa_exec(), display_nat_warning(), do_directory(), do_setnat(), dtmf_audiohook_write_list(), dundi_encrypt(), dundi_exec(), dundi_helper(), dundi_lookup_local(), dundi_lookup_thread(), dundi_precache_thread(), dundi_query_read(), dundi_query_thread(), dundi_rexmit(), dundi_send(), dundifunc_read(), eivr_comm(), enable_dsp_detect(), execute_cb(), expire_register(), extenspy_exec(), feature_exec_app(), feature_interpret_helper(), find_cache(), find_or_create(), find_user(), find_user_realtime(), forkcdr_exec(), forward_message(), free_user(), function_sippeer(), get_destination(), get_insecure_variable_from_config(), get_insecure_variable_from_sipregs(), get_rpid(), get_sip_pvt_byid_locked(), gosub_exec(), handle_cli_moh_show_classes(), handle_cli_wait_fullybooted(), handle_command_response(), handle_exec(), handle_frame(), handle_incoming(), handle_minivm_show_settings(), handle_options(), handle_request_bye(), handle_request_cancel(), handle_request_info(), handle_request_invite(), handle_request_refer(), handle_request_subscribe(), handle_response(), handle_response_invite(), handle_response_notify(), handle_show_settings(), handle_showchan(), handle_skinny_show_settings(), handle_speechrecognize(), handle_tcptls_connection(), hint_read(), iax2_write(), initialize_udptl(), initreqprep(), interpret_t38_parameters(), is_state_change_valid(), join_conference_bridge(), leave_conference_bridge(), leave_voicemail(), load_resource(), local_alloc(), local_ast_moh_start(), local_bridgedchannel(), local_call(), local_devicestate(), local_hangup(), local_indicate(), local_write(), main(), make_email_file(), manager_list_voicemail_users(), masq_park_call(), match_req_to_dialog(), menu_callback(), minivm_accmess_exec(), minivm_account_func_read(), minivm_greet_exec(), minivm_notify_exec(), minivm_record_exec(), mixmonitor_exec(), mixmonitor_thread(), mod_load_cmp(), moh_files_alloc(), moh_scan_files(), multicast_rtp_write(), notify_new_message(), odbc_load_module(), page_exec(), park_call_exec(), park_call_full(), park_space_reserve(), parse_moved_contact(), parse_register_contact(), pbx_builtin_background(), pbx_builtin_waitexten(), peer_ipcmp_cb(), pick_unlocked_cdr(), play_mailbox_owner(), play_message(), play_record_review(), post_cdr(), post_join_marked(), post_join_unmarked(), precache_transactions(), process_cn_rfc3389(), process_crypto(), process_sdp(), process_sdp_a_audio(), process_sdp_o(), process_text_line(), read_exec(), readexten_exec(), realtime_peer(), realtime_switch_common(), receivefax_exec(), record_exec(), redirecting_write(), reload_config(), reload_handler(), reload_queues(), reload_single_queue(), remote_bridge_loop(), remove_from_queue(), reqprep(), respprep(), retrans_pkt(), retrydial_exec(), search_directory_sub(), select_entry(), select_item_pause(), send_request(), sendfax_exec(), sendmail(), sendurl_exec(), serialize_showchan(), set_address_from_contact(), set_config_flags(), set_pvt_allowed_methods(), set_t38_capabilities(), should_skip_dtmf(), show_channels_cb(), sig_pri_call(), sip_alloc(), sip_answer(), sip_call(), sip_cc_agent_destructor(), sip_destroy_peer(), sip_dtmfmode(), sip_fixup(), sip_get_rtp_peer(), sip_get_trtp_peer(), sip_get_udptl_peer(), sip_get_vrtp_peer(), sip_hangup(), sip_indicate(), sip_nat_mode(), sip_new(), sip_prune_realtime(), sip_queryoption(), sip_read(), sip_real_dst(), sip_rtp_read(), sip_send_mwi_to_peer(), sip_senddigit_begin(), sip_senddigit_end(), sip_sendhtml(), sip_set_rtp_peer(), sip_set_udptl_peer(), sip_setoption(), sip_show_channel(), sip_show_settings(), sip_show_users(), sip_write(), sla_trunk_exec(), smdi_msg_find(), sms_exec(), socket_process(), socket_process_meta(), softhangup_exec(), spawn_mp3(), speech_background(), speech_read(), spy_generate(), start_spying(), startmon(), transmit_info_with_digit(), transmit_invite(), transmit_notify_with_mwi(), transmit_refer(), transmit_reinvite_with_sdp(), transmit_request_with_auth(), transmit_response_with_sdp(), transmit_state_notify(), try_calling(), update_call_counter(), update_connectedline(), update_peer(), update_redirecting(), update_registry(), vm_exec(), vm_execmain(), vm_instructions_en(), vm_intro(), vm_newuser(), volume_callback(), wait_for_winner(), waitstream_core(), and xfer_park_call_helper().

#define ast_test_flag64	(	p,
		flag
	)

Definition at line 120 of file utils.h.

Referenced by __do_deliver(), __expire_registry(), __get_from_jb(), __iax2_show_peers(), action_meetmelist(), admin_exec(), ast_app_options2str64(), ast_cli_netstats(), authenticate_reply(), authenticate_request(), authenticate_verify(), build_peer(), build_user(), can_write(), check_access(), complete_iax2_peers(), conf_exec(), conf_run(), decrypt_frame(), dial_exec_full(), do_forward(), find_conf(), find_conf_realtime(), function_iaxpeer(), handle_cli_iax2_prune_realtime(), handle_cli_iax2_show_channels(), handle_cli_iax2_show_peer(), handle_cli_iax2_show_users(), iax2_bridge(), iax2_call(), iax2_destroy_helper(), iax2_getpeertrunk(), iax2_hangup(), iax2_indicate(), iax2_predestroy(), iax2_queryoption(), iax2_request(), iax2_send(), iax2_trunk_queue(), iax2_write(), log_jitterstats(), manager_iax2_show_peer_list(), meetme_menu_admin(), meetme_menu_admin_extended(), meetme_menu_normal(), meetme_show_cmd(), peers_data_provider_get(), prune_peers(), prune_users(), realtime_peer(), realtime_update_peer(), realtime_user(), reg_source_db(), register_verify(), retrydial_exec(), schedule_delivery(), send_trunk(), set_config(), setup_privacy_args(), socket_process(), update_registry(), user_set_kickme_cb(), user_set_muted_cb(), user_set_unmuted_cb(), users_data_provider_get(), valid_priv_reply(), and wait_for_answer().

#define ast_test_flag_nonstd	(	p,
		flag
	)	((p)->flags & (flag))

Definition at line 173 of file utils.h.

Referenced by cache_save_hint(), dundi_lookup_thread(), dundi_precache_thread(), and handle_command_response().

#define ast_vasprintf	(	ret,
		fmt,
		ap
	)	_ast_vasprintf((ret), __FILE__, __LINE__, __PRETTY_FUNCTION__, (fmt), (ap))

A wrapper for vasprintf()

ast_vasprintf() is a wrapper for vasprintf() that will generate an Asterisk log message in the case that the allocation fails.

The arguments and return value are the same as vasprintf()

Definition at line 618 of file utils.h.

#define localtime_r __dont_use_localtime_r_use_ast_localtime_instead__

Definition at line 350 of file utils.h.

#define MALLOC_FAILURE_MSG ast_log(LOG_ERROR, "Memory Allocation Failure in function %s at line %d of %s\n", func, lineno, file);

Definition at line 454 of file utils.h.

Referenced by _ast_asprintf().

#define MAX	(	a,
		b
	)	({ typeof(a) __a = (a); typeof(b) __b = (b); ((__a < __b) ? __b : __a);})

Definition at line 228 of file utils.h.

Referenced by __ast_answer(), ast_dsp_busydetect(), handle_mousedown(), handle_request_invite_st(), handle_request_subscribe(), handle_response_register(), and sdl_setup().

#define MIN	(	a,
		b
	)	({ typeof(a) __a = (a); typeof(b) __b = (b); ((__a > __b) ? __b : __a);})

Definition at line 226 of file utils.h.

Referenced by autoanswer_complete(), calculate_local_max_datagram(), h263p_encap(), h264_encap(), interpret_t38_parameters(), mpeg4_encap(), process_db_keys(), sip_tls_read(), and start_session_timer().

#define RAII_VAR	(	vartype,
		varname,
		initval,
		dtor
	)

Value:

/* Prototype needed due to http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36774 */ \
    auto void _dtor_ ## varname (vartype * v); \
    void _dtor_ ## varname (vartype * v) { dtor(*v); } \
    vartype varname __attribute__((cleanup(_dtor_ ## varname))) = (initval)

Declare a variable that will call a destructor function when it goes out of scope.

Resource Allocation Is Initialization (RAII) variable declaration.

Since:: 1.8.24.0

Parameters:

vartype	The type of the variable
varname	The name of the variable
initval	The initial value of the variable
dtor	The destructor function of type' void func(vartype *)'

 void mything_cleanup(struct mything *t)
 {
     if (t) {
         ast_free(t->stuff);
     }
 }

 void do_stuff(const char *name)
 {
     RAII_VAR(struct mything *, thing, mything_alloc(name), mything_cleanup);
     ...
 }

Note:: This macro is especially useful for working with ao2 objects. A common idiom would be a function that needed to look up an ao2 object and might have several error conditions after the allocation that would normally need to unref the ao2 object. With RAII_VAR, it is possible to just return and leave the cleanup to the destructor function. For example:

 void do_stuff(const char *name)
 {
     RAII_VAR(struct mything *, thing, find_mything(name), ao2_cleanup);
     if (!thing) {
         return;
     }
     if (error) {
         return;
     }
     do_stuff_with_thing(thing);
 }

Definition at line 896 of file utils.h.

Referenced by config_pgsql(), destroy_pgsql(), dial_trunk(), find_table(), realtime_multi_pgsql(), realtime_pgsql(), run_station(), sla_add_trunk_to_station(), sla_build_station(), sla_build_trunk(), sla_check_station_delay(), sla_handle_dial_state_event(), sla_state(), sla_station_exec(), sla_trunk_exec(), store_pgsql(), update2_pgsql(), and update_pgsql().

Function Documentation

int _ast_asprintf	(	char **	ret,
		const char *	file,
		int	lineno,
		const char *	func,
		const char *	fmt,
			...
	)

Definition at line 2264 of file utils.c.

References MALLOC_FAILURE_MSG, and vasprintf.

{
   int res;
   va_list ap;

   va_start(ap, fmt);
   if ((res = vasprintf(ret, fmt, ap)) == -1) {
      MALLOC_FAILURE_MSG;
   }
   va_end(ap);

   return res;
}

void * _ast_calloc	(	size_t	num,
		size_t	len,
		const char *	file,
		int	lineno,
		const char *	func
	)		`[inline]`

Definition at line 500 of file utils.h.

void * _ast_malloc	(	size_t	len,
		const char *	file,
		int	lineno,
		const char *	func
	)		`[inline]`

Definition at line 477 of file utils.h.

void * _ast_realloc	(	void *	p,
		size_t	len,
		const char *	file,
		int	lineno,
		const char *	func
	)		`[inline]`

Definition at line 536 of file utils.h.

char * _ast_strdup	(	const char *	str,
		const char *	file,
		int	lineno,
		const char *	func
	)		`[inline]`

Definition at line 565 of file utils.h.

char * _ast_strndup	(	const char *	str,
		size_t	len,
		const char *	file,
		int	lineno,
		const char *	func
	)		`[inline]`

Definition at line 594 of file utils.h.

int _ast_vasprintf	(	char **	ret,
		const char *	file,
		int	lineno,
		const char *	func,
		const char *	fmt,
		va_list	ap
	)		`[inline]`

Definition at line 632 of file utils.h.

{                                                                \

int ast_base64decode	(	unsigned char *	dst,
		const char *	src,
		int	max
	)

Decode data from base64.

Parameters:

dst	the destination buffer
src	the source buffer
max	The maximum number of bytes to write into the destination buffer. Note that this function will not ensure that the destination buffer is NULL terminated. So, in general, this parameter should be sizeof(dst) - 1.

Definition at line 272 of file utils.c.

Referenced by aes_helper(), ast_check_signature(), base64_helper(), osp_validate_token(), sdp_crypto_process(), and sdp_crypto_setup().

{
   int cnt = 0;
   unsigned int byte = 0;
   unsigned int bits = 0;
   int incnt = 0;
   while(*src && *src != '=' && (cnt < max)) {
      /* Shift in 6 bits of input */
      byte <<= 6;
      byte |= (b2a[(int)(*src)]) & 0x3f;
      bits += 6;
      src++;
      incnt++;
      /* If we have at least 8 bits left over, take that character 
         off the top */
      if (bits >= 8)  {
         bits -= 8;
         *dst = (byte >> bits) & 0xff;
         dst++;
         cnt++;
      }
   }
   /* Don't worry about left over bits, they're extra anyway */
   return cnt;
}

int ast_base64encode	(	char *	dst,
		const unsigned char *	src,
		int	srclen,
		int	max
	)

Encode data in base64.

Parameters:

dst	the destination buffer
src	the source data to be encoded
srclen	the number of bytes present in the source buffer
max	the maximum number of bytes to write into the destination buffer, including the terminating NULL character.

Definition at line 350 of file utils.c.

References ast_base64encode_full().

Referenced by aes_helper(), aji_start_sasl(), ast_sign(), base64_helper(), build_secret(), osp_check_destination(), and sdp_crypto_setup().

{
   return ast_base64encode_full(dst, src, srclen, max, 0);
}

int ast_base64encode_full	(	char *	dst,
		const unsigned char *	src,
		int	srclen,
		int	max,
		int	linebreaks
	)

encode text to BASE64 coding

Definition at line 299 of file utils.c.

Referenced by ast_base64encode().

{
   int cnt = 0;
   int col = 0;
   unsigned int byte = 0;
   int bits = 0;
   int cntin = 0;
   /* Reserve space for null byte at end of string */
   max--;
   while ((cntin < srclen) && (cnt < max)) {
      byte <<= 8;
      byte |= *(src++);
      bits += 8;
      cntin++;
      if ((bits == 24) && (cnt + 4 <= max)) {
         *dst++ = base64[(byte >> 18) & 0x3f];
         *dst++ = base64[(byte >> 12) & 0x3f];
         *dst++ = base64[(byte >> 6) & 0x3f];
         *dst++ = base64[byte & 0x3f];
         cnt += 4;
         col += 4;
         bits = 0;
         byte = 0;
      }
      if (linebreaks && (cnt < max) && (col == 64)) {
         *dst++ = '\n';
         cnt++;
         col = 0;
      }
   }
   if (bits && (cnt + 4 <= max)) {
      /* Add one last character for the remaining bits, 
         padding the rest with 0 */
      byte <<= 24 - bits;
      *dst++ = base64[(byte >> 18) & 0x3f];
      *dst++ = base64[(byte >> 12) & 0x3f];
      if (bits == 16)
         *dst++ = base64[(byte >> 6) & 0x3f];
      else
         *dst++ = '=';
      *dst++ = '=';
      cnt += 4;
   }
   if (linebreaks && (cnt < max)) {
      *dst++ = '\n';
      cnt++;
   }
   *dst = '\0';
   return cnt;
}

int ast_careful_fwrite	(	FILE *	f,
		int	fd,
		const char *	s,
		size_t	len,
		int	timeoutms
	)

Write data to a file stream with a timeout.

Parameters:

f	the file stream to write to
fd	the file description to poll on to know when the file stream can be written to without blocking.
s	the buffer to write from
len	the number of bytes to write
timeoutms	The maximum amount of time to block in this function trying to write, specified in milliseconds.

Note:: This function assumes that the associated file stream has been set up as non-blocking.

Return values:

0	success
-1	error

Definition at line 1329 of file utils.c.

References ast_log(), ast_tvdiff_ms(), ast_tvnow(), ast_wait_for_output(), errno, and LOG_ERROR.

Referenced by send_string().

{
   struct timeval start = ast_tvnow();
   int n = 0;
   int elapsed = 0;

   while (len) {
      if (ast_wait_for_output(fd, timeoutms - elapsed)) {
         /* poll returned a fatal error, so bail out immediately. */
         return -1;
      }

      /* Clear any errors from a previous write */
      clearerr(f);

      n = fwrite(src, 1, len, f);

      if (ferror(f) && errno != EINTR && errno != EAGAIN) {
         /* fatal error from fwrite() */
         if (!feof(f)) {
            /* Don't spam the logs if it was just that the connection is closed. */
            ast_log(LOG_ERROR, "fwrite() returned error: %s\n", strerror(errno));
         }
         n = -1;
         break;
      }

      /* Update for data already written to the socket */
      len -= n;
      src += n;

      elapsed = ast_tvdiff_ms(ast_tvnow(), start);
      if (elapsed >= timeoutms) {
         /* We've taken too long to write 
          * This is only an error condition if we haven't finished writing. */
         n = len ? -1 : 0;
         break;
      }
   }

   while (fflush(f)) {
      if (errno == EAGAIN || errno == EINTR) {
         continue;
      }
      if (!feof(f)) {
         /* Don't spam the logs if it was just that the connection is closed. */
         ast_log(LOG_ERROR, "fflush() returned error: %s\n", strerror(errno));
      }
      n = -1;
      break;
   }

   return n < 0 ? -1 : 0;
}

int ast_carefulwrite	(	int	fd,
		char *	s,
		int	len,
		int	timeoutms
	)

Try to write string, but wait no more than ms milliseconds before timing out.

Note:: If you are calling ast_carefulwrite, it is assumed that you are calling it on a file descriptor that _DOES_ have NONBLOCK set. This way, there is only one system call made to do a write, unless we actually have a need to wait. This way, we get better performance.

Try to write string, but wait no more than ms milliseconds before timing out.

Note:: The code assumes that the file descriptor has NONBLOCK set, so there is only one system call made to do a write, unless we actually have a need to wait. This way, we get better performance. If the descriptor is blocking, all assumptions on the guaranteed detail do not apply anymore.

Definition at line 1288 of file utils.c.

References ast_log(), ast_tvdiff_ms(), ast_tvnow(), ast_wait_for_output(), errno, and LOG_ERROR.

Referenced by ast_agi_send(), and ast_cli().

{
   struct timeval start = ast_tvnow();
   int res = 0;
   int elapsed = 0;

   while (len) {
      if (ast_wait_for_output(fd, timeoutms - elapsed)) {
         return -1;
      }

      res = write(fd, s, len);

      if (res < 0 && errno != EAGAIN && errno != EINTR) {
         /* fatal error from write() */
         ast_log(LOG_ERROR, "write() returned error: %s\n", strerror(errno));
         return -1;
      }

      if (res < 0) {
         /* It was an acceptable error */
         res = 0;
      }

      /* Update how much data we have left to write */
      len -= res;
      s += res;
      res = 0;

      elapsed = ast_tvdiff_ms(ast_tvnow(), start);
      if (elapsed >= timeoutms) {
         /* We've taken too long to write 
          * This is only an error condition if we haven't finished writing. */
         res = len ? -1 : 0;
         break;
      }
   }

   return res;
}

void ast_do_crash ( void )

Force a crash if DO_CRASH is defined.

Note:: If DO_CRASH is not defined then the function returns.

Returns:: Nothing

Definition at line 2297 of file utils.c.

{
#if defined(DO_CRASH)
   abort();
   /*
    * Just in case abort() doesn't work or something else super
    * silly, and for Qwell's amusement.
    */
   *((int *) 0) = 0;
#endif   /* defined(DO_CRASH) */
}

int ast_eid_cmp	(	const struct ast_eid *	eid1,
		const struct ast_eid *	eid2
	)

Compare two EIDs.

Returns:: 0 if the two are the same, non-zero otherwise

Since:: 1.6.1

Definition at line 320 of file netsock.c.

Referenced by aji_devstate_cb(), aji_handle_pubsub_event(), aji_mwi_cb(), ast_event_cb(), build_peer(), build_transactions(), destroy_trans(), dundi_answer_entity(), dundi_answer_query(), dundi_ie_append_eid_appropriately(), dundi_lookup_internal(), dundi_prop_precache(), dundi_query_thread(), evt_event_deliver_cb(), find_peer(), handle_command_response(), optimize_transactions(), and register_request().

{
   return memcmp(eid1, eid2, sizeof(*eid1));
}

char* ast_eid_to_str	(	char *	s,
		int	maxlen,
		struct ast_eid *	eid
	)

/brief Convert an EID to a string

Since:: 1.6.1

Definition at line 222 of file netsock.c.

References ast_eid::eid.

Referenced by aji_publish_device_state(), aji_publish_mwi(), append_transaction(), ast_set_default_eid(), ast_str_retrieve_variable(), build_peer(), build_transactions(), cache_lookup(), cache_lookup_internal(), check_key(), complete_peer_helper(), destroy_trans(), do_autokill(), do_register(), do_register_expire(), dump_answer(), dump_eid(), dump_raw_ie(), dundi_answer_entity(), dundi_lookup_internal(), dundi_lookup_local(), dundi_lookup_thread(), dundi_precache_thread(), dundi_prop_precache(), dundi_query_thread(), dundi_send(), dundi_show_entityid(), dundi_show_peer(), dundi_show_peers(), dundi_show_requests(), handle_command_response(), handle_show_settings(), populate_addr(), register_request(), and update_key().

{
   int x;
   char *os = s;
   if (maxlen < 18) {
      if (s && (maxlen > 0))
         *s = '\0';
   } else {
      for (x = 0; x < 5; x++) {
         sprintf(s, "%02x:", eid->eid[x]);
         s += 3;
      }
      sprintf(s, "%02x", eid->eid[5]);
   }
   return os;
}

void ast_enable_packet_fragmentation ( int sock )

Disable PMTU discovery on a socket.

Parameters:

sock	The socket to manipulate

Returns:: Nothing

On Linux, UDP sockets default to sending packets with the Dont Fragment (DF) bit set. This is supposedly done to allow the application to do PMTU discovery, but Asterisk does not do this.

Because of this, UDP packets sent by Asterisk that are larger than the MTU of any hop in the path will be lost. This function can be called on a socket to ensure that the DF bit will not be set.

Definition at line 2074 of file utils.c.

References ast_log(), and LOG_WARNING.

Referenced by ast_netsock_bindaddr(), and reload_config().

{
#if defined(HAVE_IP_MTU_DISCOVER)
   int val = IP_PMTUDISC_DONT;
   
   if (setsockopt(sock, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val)))
      ast_log(LOG_WARNING, "Unable to disable PMTU discovery. Large UDP packets may fail to be delivered when sent from this socket.\n");
#endif /* HAVE_IP_MTU_DISCOVER */
}

char* ast_escape_quoted	(	const char *	string,
		char *	outbuf,
		int	buflen
	)

Escape characters found in a quoted string.

Note:: This function escapes quoted characters based on the 'qdtext' set of allowed characters from RFC 3261 section 25.1.

Parameters:

string	string to be escaped
outbuf	resulting escaped string
buflen	size of output buffer

Returns:: a pointer to the escaped string

Definition at line 424 of file utils.c.

References string.

Referenced by initreqprep().

{
   const char *ptr  = string;
   char *out = outbuf;
   char *allow = "\t\v !"; /* allow LWS (minus \r and \n) and "!" */

   while (*ptr && out - outbuf < buflen - 1) {
      if (!(strchr(allow, *ptr))
         && !(*ptr >= '#' && *ptr <= '[') /* %x23 - %x5b */
         && !(*ptr >= ']' && *ptr <= '~') /* %x5d - %x7e */
         && !((unsigned char) *ptr > 0x7f)) {             /* UTF8-nonascii */

         if (out - outbuf >= buflen - 2) {
            break;
         }
         out += sprintf(out, "\\%c", (unsigned char) *ptr);
      } else {
         *out = *ptr;
         out++;
      }
      ptr++;
   }

   if (buflen) {
      *out = '\0';
   }

   return outbuf;
}

struct hostent* ast_gethostbyname	(	const char *	host,
		struct ast_hostent *	hp
	)		`[read]`

Thread-safe gethostbyname function to use in Asterisk.

Definition at line 188 of file utils.c.

References ast_hostent::buf, and ast_hostent::hp.

Referenced by __ast_http_load(), app_exec(), ast_parse_arg(), build_peer(), config_load(), config_parse_variables(), create_addr(), festival_exec(), gtalk_load_config(), gtalk_update_stun(), iax_template_parse(), jingle_load_config(), jingle_update_stun(), launch_netscript(), process_sdp(), realtime_peer(), realtime_user(), reload_config(), and set_config().

{
   int res;
   int herrno;
   int dots = 0;
   const char *s;
   struct hostent *result = NULL;
   /* Although it is perfectly legitimate to lookup a pure integer, for
      the sake of the sanity of people who like to name their peers as
      integers, we break with tradition and refuse to look up a
      pure integer */
   s = host;
   res = 0;
   while (s && *s) {
      if (*s == '.')
         dots++;
      else if (!isdigit(*s))
         break;
      s++;
   }
   if (!s || !*s) {
      /* Forge a reply for IP's to avoid octal IP's being interpreted as octal */
      if (dots != 3)
         return NULL;
      memset(hp, 0, sizeof(struct ast_hostent));
      hp->hp.h_addrtype = AF_INET;
      hp->hp.h_addr_list = (void *) hp->buf;
      hp->hp.h_addr = hp->buf + sizeof(void *);
      /* For AF_INET, this will always be 4 */
      hp->hp.h_length = 4;
      if (inet_pton(AF_INET, host, hp->hp.h_addr) > 0)
         return &hp->hp;
      return NULL;
      
   }
#ifdef HAVE_GETHOSTBYNAME_R_5
   result = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &herrno);

   if (!result || !hp->hp.h_addr_list || !hp->hp.h_addr_list[0])
      return NULL;
#else
   res = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &result, &herrno);

   if (res || !result || !hp->hp.h_addr_list || !hp->hp.h_addr_list[0])
      return NULL;
#endif
   return &hp->hp;
}

void ast_md5_hash	(	char *	output,
		const char *	input
	)

Produces MD5 hash based on input string.

Definition at line 238 of file utils.c.

References MD5Final(), MD5Init(), and MD5Update().

Referenced by __init_manager(), auth_exec(), auth_http_callback(), build_reply_digest(), check_auth(), and md5().

{
   struct MD5Context md5;
   unsigned char digest[16];
   char *ptr;
   int x;

   MD5Init(&md5);
   MD5Update(&md5, (const unsigned char *) input, strlen(input));
   MD5Final(digest, &md5);
   ptr = output;
   for (x = 0; x < 16; x++)
      ptr += sprintf(ptr, "%2.2x", digest[x]);
}

int ast_mkdir	(	const char *	path,
		int	mode
	)

Recursively create directory path.

Parameters:

path	The directory path to create
mode	The permissions with which to try to create the directory

Returns:: 0 on success or an error code otherwise

Creates a directory path, creating parent directories as needed.

Definition at line 2084 of file utils.c.

References ast_alloca, errno, and len().

Referenced by ast_monitor_change_fname(), ast_monitor_start(), conf_run(), create_dirpath(), dictate_exec(), filename_parse(), init_logger(), load_module(), mixmonitor_exec(), record_exec(), reload_logger(), remove_from_queue(), setup_privacy_args(), sms_nextoutgoing(), sms_writefile(), testclient_exec(), testserver_exec(), and write_history().

{
   char *ptr;
   int len = strlen(path), count = 0, x, piececount = 0;
   char *tmp = ast_strdupa(path);
   char **pieces;
   char *fullpath = ast_alloca(len + 1);
   int res = 0;

   for (ptr = tmp; *ptr; ptr++) {
      if (*ptr == '/')
         count++;
   }

   /* Count the components to the directory path */
   pieces = ast_alloca(count * sizeof(*pieces));
   for (ptr = tmp; *ptr; ptr++) {
      if (*ptr == '/') {
         *ptr = '\0';
         pieces[piececount++] = ptr + 1;
      }
   }

   *fullpath = '\0';
   for (x = 0; x < piececount; x++) {
      /* This looks funky, but the buffer is always ideally-sized, so it's fine. */
      strcat(fullpath, "/");
      strcat(fullpath, pieces[x]);
      res = mkdir(fullpath, mode);
      if (res && errno != EEXIST)
         return errno;
   }
   return 0;
}

int ast_parse_digest	(	const char *	digest,
		struct ast_http_digest *	d,
		int	request,
		int	pedantic
	)

Parse digest authorization header.

Returns:: Returns -1 if we have no auth or something wrong with digest.

Note:: This function may be used for Digest request and responce header. request arg is set to nonzero, if we parse Digest Request. pedantic arg can be set to nonzero if we need to do addition Digest check.

Definition at line 2149 of file utils.c.

References ast_free, ast_log(), ast_skip_blanks(), ast_str_buffer(), ast_str_create(), ast_str_set(), ast_string_field_ptr_set, ast_string_field_set, ast_strlen_zero(), ast_unescape_c(), ast_http_digest::cnonce, ast_http_digest::domain, LOG_WARNING, ast_http_digest::nc, ast_http_digest::nonce, ast_http_digest::opaque, ast_http_digest::qop, ast_http_digest::realm, ast_http_digest::response, ast_http_digest::uri, and ast_http_digest::username.

Referenced by auth_http_callback().

                                                                                               {
   char *c;
   struct ast_str *str = ast_str_create(16);

   /* table of recognised keywords, and places where they should be copied */
   const struct x {
      const char *key;
      const ast_string_field *field;
   } *i, keys[] = {
      { "username=", &d->username },
      { "realm=", &d->realm },
      { "nonce=", &d->nonce },
      { "uri=", &d->uri },
      { "domain=", &d->domain },
      { "response=", &d->response },
      { "cnonce=", &d->cnonce },
      { "opaque=", &d->opaque },
      /* Special cases that cannot be directly copied */
      { "algorithm=", NULL },
      { "qop=", NULL },
      { "nc=", NULL },
      { NULL, 0 },
   };

   if (ast_strlen_zero(digest) || !d || !str) {
      ast_free(str);
      return -1;
   }

   ast_str_set(&str, 0, "%s", digest);

   c = ast_skip_blanks(ast_str_buffer(str));

   if (strncasecmp(c, "Digest ", strlen("Digest "))) {
      ast_log(LOG_WARNING, "Missing Digest.\n");
      ast_free(str);
      return -1;
   }
   c += strlen("Digest ");

   /* lookup for keys/value pair */
   while (c && *c && *(c = ast_skip_blanks(c))) {
      /* find key */
      for (i = keys; i->key != NULL; i++) {
         char *src, *separator;
         int unescape = 0;
         if (strncasecmp(c, i->key, strlen(i->key)) != 0) {
            continue;
         }

         /* Found. Skip keyword, take text in quotes or up to the separator. */
         c += strlen(i->key);
         if (*c == '"') {
            src = ++c;
            separator = "\"";
            unescape = 1;
         } else {
            src = c;
            separator = ",";
         }
         strsep(&c, separator); /* clear separator and move ptr */
         if (unescape) {
            ast_unescape_c(src);
         }
         if (i->field) {
            ast_string_field_ptr_set(d, i->field, src);
         } else {
            /* Special cases that require additional procesing */
            if (!strcasecmp(i->key, "algorithm=")) {
               if (strcasecmp(src, "MD5")) {
                  ast_log(LOG_WARNING, "Digest algorithm: \"%s\" not supported.\n", src);
                  ast_free(str);
                  return -1;
               }
            } else if (!strcasecmp(i->key, "qop=") && !strcasecmp(src, "auth")) {
               d->qop = 1;
            } else if (!strcasecmp(i->key, "nc=")) {
               unsigned long u;
               if (sscanf(src, "%30lx", &u) != 1) {
                  ast_log(LOG_WARNING, "Incorrect Digest nc value: \"%s\".\n", src);
                  ast_free(str);
                  return -1;
               }
               ast_string_field_set(d, nc, src);
            }
         }
         break;
      }
      if (i->key == NULL) { /* not found, try ',' */
         strsep(&c, ",");
      }
   }
   ast_free(str);

   /* Digest checkout */
   if (ast_strlen_zero(d->realm) || ast_strlen_zero(d->nonce)) {
      /* "realm" and "nonce" MUST be always exist */
      return -1;
   }

   if (!request) {
      /* Additional check for Digest response */
      if (ast_strlen_zero(d->username) || ast_strlen_zero(d->uri) || ast_strlen_zero(d->response)) {
         return -1;
      }

      if (pedantic && d->qop && (ast_strlen_zero(d->cnonce) || ast_strlen_zero(d->nc))) {
         return -1;
      }
   }

   return 0;
}

char* ast_process_quotes_and_slashes	(	char *	start,
		char	find,
		char	replace_with
	)

Process a string to find and replace characters.

Parameters:

start	The string to analyze
find	The character to find
replace_with	The character that will replace the one we are looking for

Definition at line 1617 of file utils.c.

{
   char *dataPut = start;
   int inEscape = 0;
   int inQuotes = 0;

   for (; *start; start++) {
      if (inEscape) {
         *dataPut++ = *start;       /* Always goes verbatim */
         inEscape = 0;
      } else {
         if (*start == '\\') {
            inEscape = 1;      /* Do not copy \ into the data */
         } else if (*start == '\'') {
            inQuotes = 1 - inQuotes;   /* Do not copy ' into the data */
         } else {
            /* Replace , with |, unless in quotes */
            *dataPut++ = inQuotes ? *start : ((*start == find) ? replace_with : *start);
         }
      }
   }
   if (start != dataPut)
      *dataPut = 0;
   return dataPut;
}

int ast_pthread_create_detached_stack	(	pthread_t *	thread,
		pthread_attr_t *	attr,
		void ()(void *)	start_routine,
		void *	data,
		size_t	stacksize,
		const char *	file,
		const char *	caller,
		int	line,
		const char *	start_fn
	)

Definition at line 1201 of file utils.c.

References ast_alloca, ast_log(), ast_pthread_create_stack(), errno, LOG_WARNING, and thr_arg::start_routine.

{
   unsigned char attr_destroy = 0;
   int res;

   if (!attr) {
      attr = ast_alloca(sizeof(*attr));
      pthread_attr_init(attr);
      attr_destroy = 1;
   }

   if ((errno = pthread_attr_setdetachstate(attr, PTHREAD_CREATE_DETACHED)))
      ast_log(LOG_WARNING, "pthread_attr_setdetachstate: %s\n", strerror(errno));

   res = ast_pthread_create_stack(thread, attr, start_routine, data, 
                                  stacksize, file, caller, line, start_fn);

   if (attr_destroy)
      pthread_attr_destroy(attr);

   return res;
}

int ast_pthread_create_stack	(	pthread_t *	thread,
		pthread_attr_t *	attr,
		void ()(void *)	start_routine,
		void *	data,
		size_t	stacksize,
		const char *	file,
		const char *	caller,
		int	line,
		const char *	start_fn
	)

Definition at line 1153 of file utils.c.

References ast_alloca, ast_asprintf, ast_log(), ast_malloc, AST_STACKSIZE, thr_arg::data, dummy_start(), errno, LOG_WARNING, thr_arg::name, pthread_create, and thr_arg::start_routine.

Referenced by ast_pthread_create_detached_stack().

{
#if !defined(LOW_MEMORY)
   struct thr_arg *a;
#endif

   if (!attr) {
      attr = ast_alloca(sizeof(*attr));
      pthread_attr_init(attr);
   }

#ifdef __linux__
   /* On Linux, pthread_attr_init() defaults to PTHREAD_EXPLICIT_SCHED,
      which is kind of useless. Change this here to
      PTHREAD_INHERIT_SCHED; that way the -p option to set realtime
      priority will propagate down to new threads by default.
      This does mean that callers cannot set a different priority using
      PTHREAD_EXPLICIT_SCHED in the attr argument; instead they must set
      the priority afterwards with pthread_setschedparam(). */
   if ((errno = pthread_attr_setinheritsched(attr, PTHREAD_INHERIT_SCHED)))
      ast_log(LOG_WARNING, "pthread_attr_setinheritsched: %s\n", strerror(errno));
#endif

   if (!stacksize)
      stacksize = AST_STACKSIZE;

   if ((errno = pthread_attr_setstacksize(attr, stacksize ? stacksize : AST_STACKSIZE)))
      ast_log(LOG_WARNING, "pthread_attr_setstacksize: %s\n", strerror(errno));

#if !defined(LOW_MEMORY)
   if ((a = ast_malloc(sizeof(*a)))) {
      a->start_routine = start_routine;
      a->data = data;
      start_routine = dummy_start;
      if (ast_asprintf(&a->name, "%-20s started at [%5d] %s %s()",
              start_fn, line, file, caller) < 0) {
         a->name = NULL;
      }
      data = a;
   }
#endif /* !LOW_MEMORY */

   return pthread_create(thread, attr, start_routine, data); /* We're in ast_pthread_create, so it's okay */
}

long int ast_random ( void )

Definition at line 1593 of file utils.c.

References ast_mutex_lock, ast_mutex_unlock, and randomlock.

Referenced by acf_rand_exec(), action_challenge(), add_sdp(), agent_new(), agi_handle_command(), ast_lock_path_lockfile(), ast_moh_files_next(), ast_rtp_change_source(), ast_rtp_new(), ast_udptl_new_with_bindaddr(), auth_http_callback(), authenticate_request(), build_gateway(), build_iv(), build_localtag_registry(), build_rand_pad(), build_reply_digest(), calc_metric(), calc_rxstamp(), caldav_write_event(), callno_hash(), create_channel_name(), generate_exchange_uuid(), generate_random_string(), generic_http_callback(), get_trans_id(), gtalk_alloc(), gtalk_create_candidates(), gtalk_new(), handle_incoming(), handle_response_invite(), iax2_key_rotate(), iax2_start_transfer(), jingle_alloc(), jingle_create_candidates(), jingle_new(), load_module(), make_email_file(), make_our_tag(), moh_files_alloc(), multicast_rtp_new(), ogg_vorbis_rewrite(), osp_create_uuid(), page_exec(), park_space_reserve(), process_weights(), reg_source_db(), registry_authrequest(), reqprep(), say_periodic_announcement(), sendmail(), set_nonce_randdata(), sip_alloc(), socket_read(), start_rtp(), stun_req_id(), transmit_invite(), transmit_register(), transmit_response_using_temp(), try_calling(), and try_firmware().

{
   long int res;
#ifdef HAVE_DEV_URANDOM
   if (dev_urandom_fd >= 0) {
      int read_res = read(dev_urandom_fd, &res, sizeof(res));
      if (read_res > 0) {
         long int rm = RAND_MAX;
         res = res < 0 ? ~res : res;
         rm++;
         return res % rm;
      }
   }
#endif
#ifdef linux
   res = random();
#else
   ast_mutex_lock(&randomlock);
   res = random();
   ast_mutex_unlock(&randomlock);
#endif
   return res;
}

void ast_register_thread ( char * name )

Definition at line 400 of file asterisk.c.

References ast_assert, ast_calloc, AST_RWLIST_INSERT_HEAD, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_atexit::list, multi_thread_safe, and name.

Referenced by dummy_start().

{
   struct thread_list_t *new = ast_calloc(1, sizeof(*new));

   if (!new)
      return;

   ast_assert(multi_thread_safe);
   new->id = pthread_self();
   new->name = name; /* steal the allocated memory for the thread name */
   AST_RWLIST_WRLOCK(&thread_list);
   AST_RWLIST_INSERT_HEAD(&thread_list, new, list);
   AST_RWLIST_UNLOCK(&thread_list);
}

void ast_set_default_eid ( struct ast_eid * eid )

Fill in an ast_eid with the default eid of this machine.

Since:: 1.6.1

Definition at line 239 of file netsock.c.

References ARRAY_LEN, ast_debug, ast_eid_to_str(), and ast_eid::eid.

Referenced by ast_readconfig().

{
#if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_IFRU_IFRU_HWADDR)
   int s, x = 0;
   char eid_str[20];
   struct ifreq ifr;
   static const unsigned int MAXIF = 10;

   s = socket(AF_INET, SOCK_STREAM, 0);
   if (s < 0)
      return;
   for (x = 0; x < MAXIF; x++) {
      static const char *prefixes[] = { "eth", "em" };
      unsigned int i;

      for (i = 0; i < ARRAY_LEN(prefixes); i++) {
         memset(&ifr, 0, sizeof(ifr));
         snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s%d", prefixes[i], x);
         if (!ioctl(s, SIOCGIFHWADDR, &ifr)) {
            break;
         }
      }

      if (i == ARRAY_LEN(prefixes)) {
         /* Try pciX#[1..N] */
         for (i = 0; i < MAXIF; i++) {
            memset(&ifr, 0, sizeof(ifr));
            snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "pci%u#%u", x, i);
            if (!ioctl(s, SIOCGIFHWADDR, &ifr)) {
               break;
            }
         }
         if (i == MAXIF) {
            continue;
         }
      }

      memcpy(eid, ((unsigned char *)&ifr.ifr_hwaddr) + 2, sizeof(*eid));
      ast_debug(1, "Seeding global EID '%s' from '%s' using 'siocgifhwaddr'\n", ast_eid_to_str(eid_str, sizeof(eid_str), eid), ifr.ifr_name);
      close(s);
      return;
   }
   close(s);
#else
#if defined(ifa_broadaddr) && !defined(SOLARIS)
   char eid_str[20];
   struct ifaddrs *ifap;
   
   if (getifaddrs(&ifap) == 0) {
      struct ifaddrs *p;
      for (p = ifap; p; p = p->ifa_next) {
         if ((p->ifa_addr->sa_family == AF_LINK) && !(p->ifa_flags & IFF_LOOPBACK) && (p->ifa_flags & IFF_RUNNING)) {
            struct sockaddr_dl* sdp = (struct sockaddr_dl*) p->ifa_addr;
            memcpy(&(eid->eid), sdp->sdl_data + sdp->sdl_nlen, 6);
            ast_debug(1, "Seeding global EID '%s' from '%s' using 'getifaddrs'\n", ast_eid_to_str(eid_str, sizeof(eid_str), eid), p->ifa_name);
            freeifaddrs(ifap);
            return;
         }
      }
      freeifaddrs(ifap);
   }
#endif
#endif
   ast_debug(1, "No ethernet interface found for seeding global EID. You will have to set it manually.\n");
}

void ast_sha1_hash	(	char *	output,
		const char *	input
	)

Produces SHA1 hash based on input string.

Definition at line 254 of file utils.c.

References SHA1Input(), SHA1Reset(), and SHA1Result().

Referenced by aji_act_hook(), handle_call_token(), jabber_make_auth(), and sha1().

{
   struct SHA1Context sha;
   char *ptr;
   int x;
   uint8_t Message_Digest[20];

   SHA1Reset(&sha);
   
   SHA1Input(&sha, (const unsigned char *) input, strlen(input));

   SHA1Result(&sha, Message_Digest);
   ptr = output;
   for (x = 0; x < 20; x++)
      ptr += sprintf(ptr, "%2.2x", Message_Digest[x]);
}

static force_inline void ast_slinear_saturated_add	(	short *	input,
		short *	value
	)		`[static]`

Definition at line 303 of file utils.h.

Referenced by ast_frame_slinear_sum(), audio_audiohook_write_list(), audiohook_read_frame_both(), and softmix_bridge_thread().

{
   int res;

   res = (int) *input + *value;
   if (res > 32767)
      *input = 32767;
   else if (res < -32768)
      *input = -32768;
   else
      *input = (short) res;
}

static force_inline void ast_slinear_saturated_divide	(	short *	input,
		short *	value
	)		`[static]`

Definition at line 342 of file utils.h.

References value.

Referenced by ast_frame_adjust_volume(), and audiohook_read_frame_both().

{
   *input /= *value;
}

static force_inline void ast_slinear_saturated_multiply	(	short *	input,
		short *	value
	)		`[static]`

Definition at line 329 of file utils.h.

Referenced by ast_frame_adjust_volume(), and audiohook_read_frame_both().

{
   int res;

   res = (int) *input * *value;
   if (res > 32767)
      *input = 32767;
   else if (res < -32768)
      *input = -32768;
   else
      *input = (short) res;
}

static force_inline void ast_slinear_saturated_subtract	(	short *	input,
		short *	value
	)		`[static]`

Definition at line 316 of file utils.h.

Referenced by softmix_bridge_thread().

{
   int res;

   res = (int) *input - *value;
   if (res > 32767)
      *input = 32767;
   else if (res < -32768)
      *input = -32768;
   else
      *input = (short) res;
}

int ast_str_to_eid	(	struct ast_eid *	eid,
		const char *	s
	)

Convert a string into an EID.

This function expects an EID in the format: 00:11:22:33:44:55

Returns:: 0 success, non-zero failure

Since:: 1.6.1

Definition at line 305 of file netsock.c.

References ast_eid::eid.

Referenced by aji_handle_pubsub_event(), ast_readconfig(), build_peer(), dundi_do_query(), and set_config().

{
   unsigned int eid_int[6];
   int x;

   if (sscanf(s, "%2x:%2x:%2x:%2x:%2x:%2x", &eid_int[0], &eid_int[1], &eid_int[2],
       &eid_int[3], &eid_int[4], &eid_int[5]) != 6)
         return -1;
   
   for (x = 0; x < 6; x++)
      eid->eid[x] = eid_int[x];

   return 0;
}

void ast_unregister_thread ( void * id )

Definition at line 415 of file asterisk.c.

References ast_free, AST_RWLIST_REMOVE_CURRENT, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, and ast_atexit::list.

Referenced by dummy_start().

{
   struct thread_list_t *x;

   AST_RWLIST_WRLOCK(&thread_list);
   AST_RWLIST_TRAVERSE_SAFE_BEGIN(&thread_list, x, list) {
      if ((void *) x->id == id) {
         AST_RWLIST_REMOVE_CURRENT(list);
         break;
      }
   }
   AST_RWLIST_TRAVERSE_SAFE_END;
   AST_RWLIST_UNLOCK(&thread_list);
   if (x) {
      ast_free(x->name);
      ast_free(x);
   }
}

void ast_uri_decode ( char * s )

Decode URI, URN, URL (overwrite string)

Parameters:

s	String to be decoded

Definition at line 455 of file utils.c.

Referenced by acf_curl_helper(), config_curl(), get_destination(), get_name_and_number(), get_refer_info(), handle_request_invite(), http_decode(), parse_moved_contact(), realtime_curl(), realtime_multi_curl(), sip_new(), sip_uri_cmp(), and uridecode().

{
   char *o;
   unsigned int tmp;

   for (o = s; *s; s++, o++) {
      if (*s == '%' && s[1] != '\0' && s[2] != '\0' && sscanf(s + 1, "%2x", &tmp) == 1) {
         /* have '%', two chars and correct parsing */
         *o = tmp;
         s += 2;  /* Will be incremented once more when we break out */
      } else /* all other cases, just copy */
         *o = *s;
   }
   *o = '\0';
}

char* ast_uri_encode	(	const char *	string,
		char *	outbuf,
		int	buflen,
		int	do_special_char
	)

Turn text string to URI-encoded XX version.

Note:: At this point, this function is encoding agnostic; it does not check whether it is fed legal UTF-8. We escape control characters (-), '', and all characters above 0x7F. If do_special_char == 1 we will convert all characters except alnum and the mark set. Outbuf needs to have more memory allocated than the instring to have room for the expansion. Every char that is converted is replaced by three ASCII characters.

Parameters:

string	String to be converted
outbuf	Resulting encoded string
buflen	Size of output buffer
do_special_char	Convert all non alphanum characters execept those in the mark set as defined by rfc 3261 section 25.1

Note:: At this point, this function is encoding agnostic; it does not check whether it is fed legal UTF-8. We escape control characters (-), '', and all characters above 0x7F. If do_special_char == 1 we will convert all characters except alnum and mark. Outbuf needs to have more memory allocated than the instring to have room for the expansion. Every char that is converted is replaced by three ASCII characters.

Definition at line 391 of file utils.c.

References string.

Referenced by add_rpid(), build_contact(), config_curl(), destroy_curl(), initreqprep(), launch_asyncagi(), realtime_curl(), realtime_multi_curl(), require_curl(), store_curl(), update2_curl(), update_curl(), and uriencode().

{
   const char *ptr  = string; /* Start with the string */
   char *out = outbuf;
   const char *mark = "-_.!~*'()"; /* no encode set, RFC 2396 section 2.3, RFC 3261 sec 25 */

   while (*ptr && out - outbuf < buflen - 1) {
      if ((const signed char) *ptr < 32 || *ptr == 0x7f || *ptr == '%' ||
            (do_special_char &&
            !(*ptr >= '0' && *ptr <= '9') &&      /* num */
            !(*ptr >= 'A' && *ptr <= 'Z') &&      /* ALPHA */
            !(*ptr >= 'a' && *ptr <= 'z') &&      /* alpha */
            !strchr(mark, *ptr))) {               /* mark set */
         if (out - outbuf >= buflen - 3) {
            break;
         }

         out += sprintf(out, "%%%02X", (unsigned char) *ptr);
      } else {
         *out = *ptr;   /* Continue copying the string */
         out++;
      }
      ptr++;
   }

   if (buflen) {
      *out = '\0';
   }

   return outbuf;
}

int ast_utils_init ( void )

Definition at line 2126 of file utils.c.

References ARRAY_LEN, ast_cli_register_multiple(), ast_register_atexit(), and base64_init().

Referenced by main().

{
#ifdef HAVE_DEV_URANDOM
   dev_urandom_fd = open("/dev/urandom", O_RDONLY);
#endif
   base64_init();
#ifdef DEBUG_THREADS
#if !defined(LOW_MEMORY)
   ast_cli_register_multiple(utils_cli, ARRAY_LEN(utils_cli));
   ast_register_atexit(utils_shutdown);
#endif
#endif
   return 0;
}

char* ast_utils_which	(	const char *	binary,
		char *	fullpath,
		size_t	fullpath_size
	)

Resolve a binary to a full pathname.

Parameters:

binary	Name of the executable to resolve
fullpath	Buffer to hold the complete pathname
fullpath_size	Size of fullpath

Return values:

NULL	binary was not found or the environment variable PATH is not set

Returns:: fullpath

Definition at line 2279 of file utils.c.

Referenced by ast_bt_get_symbols().

{
   const char *envPATH = getenv("PATH");
   char *tpath, *path;
   struct stat unused;
   if (!envPATH) {
      return NULL;
   }
   tpath = ast_strdupa(envPATH);
   while ((path = strsep(&tpath, ":"))) {
      snprintf(fullpath, fullpath_size, "%s/%s", path, binary);
      if (!stat(fullpath, &unused)) {
         return fullpath;
      }
   }
   return NULL;
}

int ast_wait_for_input	(	int	fd,
		int	ms
	)

Definition at line 1226 of file utils.c.

References ast_poll.

Referenced by action_waitevent(), ast_tcptls_server_root(), dahdi_test_timer(), get_input(), moh_class_destructor(), sip_tcp_read(), and sip_tls_read().

{
   struct pollfd pfd[1];
   memset(pfd, 0, sizeof(pfd));
   pfd[0].fd = fd;
   pfd[0].events = POLLIN|POLLPRI;
   return ast_poll(pfd, 1, ms);
}

int ast_xml_escape	(	const char *	string,
		char *	outbuf,
		size_t	buflen
	)

Escape reserved characters for use in XML.

ast_xml_escape If outbuf is too short, the output string will be truncated. Regardless, the output will always be null terminated.

Parameters:

string	String to be converted
outbuf	Resulting encoded string
buflen	Size of output buffer

Returns:: 0 for success; -1 if buflen is too short.

Definition at line 471 of file utils.c.

References ast_assert, entity, len(), and string.

Referenced by state_notify_build_xml().

{
   char *dst = outbuf;
   char *end = outbuf + buflen - 1; /* save one for the null terminator */

   /* Handle the case for the empty output buffer */
   if (buflen == 0) {
      return -1;
   }

   /* Escaping rules from http://www.w3.org/TR/REC-xml/#syntax */
   /* This also prevents partial entities at the end of a string */
   while (*string && dst < end) {
      const char *entity = NULL;
      int len = 0;

      switch (*string) {
      case '<':
         entity = "&lt;";
         len = 4;
         break;
      case '&':
         entity = "&amp;";
         len = 5;
         break;
      case '>':
         /* necessary if ]]> is in the string; easier to escape them all */
         entity = "&gt;";
         len = 4;
         break;
      case '\'':
         /* necessary in single-quoted strings; easier to escape them all */
         entity = "&apos;";
         len = 6;
         break;
      case '"':
         /* necessary in double-quoted strings; easier to escape them all */
         entity = "&quot;";
         len = 6;
         break;
      default:
         *dst++ = *string++;
         break;
      }

      if (entity) {
         ast_assert(len == strlen(entity));
         if (end - dst < len) {
            /* no room for the entity; stop */
            break;
         }
         /* just checked for length; strcpy is fine */
         strcpy(dst, entity);
         dst += len;
         ++string;
      }
   }
   /* Write null terminator */
   *dst = '\0';
   /* If any chars are left in string, return failure */
   return *string == '\0' ? 0 : -1;
}

Variable Documentation

unsigned int __unsigned_int_flags_dummy

Note:

   Note:
   It is very important to use only unsigned variables to hold
   bit flags, as otherwise you can fall prey to the compiler's
   sign-extension antics if you try to use the top two bits in
   your variable.

   The flag macros below use a set of compiler tricks to verify
   that the caller is using an "unsigned int" variable to hold
   the flags, and nothing else. If the caller uses any other
   type of variable, a warning message similar to this:

   warning: comparison of distinct pointer types lacks cast
   will be generated.

   The "dummy" variable below is used to make these comparisons.

   Also note that at -O2 or above, this type-safety checking
   does _not_ produce any additional object code at all.

uint64_t __unsigned_int_flags_dummy64

struct ast_eid ast_eid_default

Global EID.

This is set in asterisk.conf, or determined automatically by taking the mac address of an Ethernet interface on the system.

Definition at line 192 of file asterisk.c.

Referenced by aji_devstate_cb(), aji_handle_pubsub_event(), aji_mwi_cb(), aji_publish_device_state(), aji_publish_mwi(), ast_event_append_eid(), ast_event_cb(), ast_readconfig(), ast_str_retrieve_variable(), evt_event_deliver_cb(), handle_show_settings(), and set_config().

Asterisk developer's documentation

Data Structures

Defines

Functions

Variables

Detailed Description

Define Documentation

Function Documentation

Variable Documentation