#include "asterisk.h"
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "asterisk/lock.h"
#include "asterisk/io.h"
#include "asterisk/logger.h"
#include "asterisk/md5.h"
#include "asterisk/sha1.h"
#include "asterisk/options.h"
#include "asterisk/cli.h"
#include "asterisk/linkedlists.h"
#include "asterisk/strings.h"
#include "asterisk/time.h"
#include "asterisk/stringfields.h"
#include "asterisk/utils.h"
#include "asterisk/threadstorage.h"
Go to the source code of this file.
Data Structures | |
struct | thr_arg |
Defines | |
#define | AST_API_MODULE |
#define | AST_API_MODULE |
#define | AST_API_MODULE |
#define | AST_API_MODULE |
#define | AST_API_MODULE |
#define | AST_API_MODULE |
#define | ERANGE 34 |
#define | ONE_MILLION 1000000 |
Functions | |
ast_string_field | __ast_string_field_alloc_space (struct ast_string_field_mgr *mgr, size_t needed, ast_string_field *fields, int num_fields) |
void | __ast_string_field_index_build (struct ast_string_field_mgr *mgr, ast_string_field *fields, int num_fields, int index, const char *format,...) |
void | __ast_string_field_index_build_va (struct ast_string_field_mgr *mgr, ast_string_field *fields, int num_fields, int index, const char *format, va_list ap1, va_list ap2) |
int | __ast_string_field_init (struct ast_string_field_mgr *mgr, size_t size, ast_string_field *fields, int num_fields) |
static int | add_string_pool (struct ast_string_field_mgr *mgr, size_t size) |
int | ast_atomic_fetchadd_int_slow (volatile int *p, int v) |
int | ast_base64decode (unsigned char *dst, const char *src, int max) |
decode BASE64 encoded text | |
int | ast_base64encode (char *dst, const unsigned char *src, int srclen, int max) |
int | ast_base64encode_full (char *dst, const unsigned char *src, int srclen, int max, int linebreaks) |
encode text to BASE64 coding | |
int | ast_build_string (char **buffer, size_t *space, const char *fmt,...) |
int | ast_build_string_va (char **buffer, size_t *space, const char *fmt, va_list ap) |
Build a string in a buffer, designed to be called repeatedly. | |
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. | |
int | ast_dynamic_str_thread_build_va (struct ast_dynamic_str **buf, size_t max_len, struct ast_threadstorage *ts, int append, const char *fmt, va_list ap) |
Core functionality of ast_dynamic_str_thread_(set|append)_va. | |
void | ast_enable_packet_fragmentation (int sock) |
int | ast_false (const char *s) |
int | ast_get_time_t (const char *src, time_t *dst, time_t _default, int *consumed) |
get values from config variables. | |
struct hostent * | ast_gethostbyname (const char *host, struct ast_hostent *hp) |
Re-entrant (thread safe) version of gethostbyname that replaces the standard gethostbyname (which is not thread safe). | |
const char * | ast_inet_ntoa (struct in_addr ia) |
ast_inet_ntoa: Recursive thread safe replacement of inet_ntoa | |
void | ast_join (char *s, size_t len, char *const w[]) |
void | ast_md5_hash (char *output, char *input) |
Produce 32 char MD5 hash of value. | |
AST_MUTEX_DEFINE_STATIC (fetchadd_m) | |
AST_MUTEX_DEFINE_STATIC (randomlock) | |
glibc puts a lock inside random(3), so that the results are thread-safe. BSD libc (and others) do not. | |
AST_MUTEX_DEFINE_STATIC (test_lock2) | |
AST_MUTEX_DEFINE_STATIC (test_lock) | |
AST_MUTEX_DEFINE_STATIC (__mutex) | |
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_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_sha1_hash (char *output, char *input) |
Produce 40 char SHA1 hash of value. | |
char * | ast_strip_quoted (char *s, const char *beg_quotes, const char *end_quotes) |
AST_THREADSTORAGE (inet_ntoa_buf, inet_ntoa_buf_init) | |
int | ast_true (const char *s) |
struct timeval | ast_tvadd (struct timeval a, struct timeval b) |
struct timeval | ast_tvsub (struct timeval a, struct timeval b) |
Returns the difference of two timevals a - b. | |
char * | ast_unescape_semicolon (char *s) |
Strip backslash for "escaped" semicolons. | |
void | ast_uri_decode (char *s) |
ast_uri_decode: Decode SIP URI, URN, URL (overwrite the string) | |
char * | ast_uri_encode (const char *string, char *outbuf, int buflen, int doreserved) |
ast_uri_encode: Turn text string to URI-encoded XX version | |
int | ast_utils_init (void) |
int | ast_wait_for_input (int fd, int ms) |
static void | base64_init (void) |
static void * | dummy_start (void *data) |
static int | gethostbyname_r (const char *name, struct hostent *ret, char *buf, size_t buflen, struct hostent **result, int *h_errnop) |
Reentrant replacement for gethostbyname for BSD-based systems. | |
int | test_for_thread_safety (void) |
static void * | test_thread_body (void *data) |
This is a regression test for recursive mutexes. test_for_thread_safety() will return 0 if recursive mutex locks are working properly, and non-zero if they are not working properly. | |
static struct timeval | tvfix (struct timeval a) |
Variables | |
const char | __ast_string_field_empty [] = "" |
static char | b2a [256] |
static char | base64 [64] |
static int | lock_count = 0 |
static int | test_errors = 0 |
static pthread_t | test_thread |
Definition in file utils.c.
#define ERANGE 34 |
duh? ERANGE value copied from web...
Definition at line 74 of file utils.c.
Referenced by gethostbyname_r(), and reload_queue_members().
#define ONE_MILLION 1000000 |
ast_string_field __ast_string_field_alloc_space | ( | struct ast_string_field_mgr * | mgr, | |
size_t | needed, | |||
ast_string_field * | fields, | |||
int | num_fields | |||
) |
Definition at line 1184 of file utils.c.
References add_string_pool(), ast_string_field_pool::base, ast_string_field_mgr::pool, ast_string_field_mgr::size, ast_string_field_mgr::space, and ast_string_field_mgr::used.
01186 { 01187 char *result = NULL; 01188 01189 if (__builtin_expect(needed > mgr->space, 0)) { 01190 size_t new_size = mgr->size * 2; 01191 01192 while (new_size < needed) 01193 new_size *= 2; 01194 01195 if (add_string_pool(mgr, new_size)) 01196 return NULL; 01197 } 01198 01199 result = mgr->pool->base + mgr->used; 01200 mgr->used += needed; 01201 mgr->space -= needed; 01202 return result; 01203 }
void __ast_string_field_index_build | ( | struct ast_string_field_mgr * | mgr, | |
ast_string_field * | fields, | |||
int | num_fields, | |||
int | index, | |||
const char * | format, | |||
... | ||||
) |
Definition at line 1232 of file utils.c.
References __ast_string_field_index_build_va().
01235 { 01236 va_list ap1, ap2; 01237 01238 va_start(ap1, format); 01239 va_start(ap2, format); /* va_copy does not exist on FreeBSD */ 01240 01241 __ast_string_field_index_build_va(mgr, fields, num_fields, index, format, ap1, ap2); 01242 01243 va_end(ap1); 01244 va_end(ap2); 01245 }
void __ast_string_field_index_build_va | ( | struct ast_string_field_mgr * | mgr, | |
ast_string_field * | fields, | |||
int | num_fields, | |||
int | index, | |||
const char * | format, | |||
va_list | ap1, | |||
va_list | ap2 | |||
) |
Definition at line 1205 of file utils.c.
References add_string_pool(), ast_string_field_pool::base, ast_string_field_mgr::pool, ast_string_field_mgr::size, ast_string_field_mgr::space, and ast_string_field_mgr::used.
Referenced by __ast_string_field_index_build().
01208 { 01209 size_t needed; 01210 01211 needed = vsnprintf(mgr->pool->base + mgr->used, mgr->space, format, ap1) + 1; 01212 01213 va_end(ap1); 01214 01215 if (needed > mgr->space) { 01216 size_t new_size = mgr->size * 2; 01217 01218 while (new_size < needed) 01219 new_size *= 2; 01220 01221 if (add_string_pool(mgr, new_size)) 01222 return; 01223 01224 vsprintf(mgr->pool->base + mgr->used, format, ap2); 01225 } 01226 01227 fields[index] = mgr->pool->base + mgr->used; 01228 mgr->used += needed; 01229 mgr->space -= needed; 01230 }
int __ast_string_field_init | ( | struct ast_string_field_mgr * | mgr, | |
size_t | size, | |||
ast_string_field * | fields, | |||
int | num_fields | |||
) |
Definition at line 1170 of file utils.c.
References __ast_string_field_empty, and add_string_pool().
01172 { 01173 int index; 01174 01175 if (add_string_pool(mgr, size)) 01176 return -1; 01177 01178 for (index = 0; index < num_fields; index++) 01179 fields[index] = __ast_string_field_empty; 01180 01181 return 0; 01182 }
static int add_string_pool | ( | struct ast_string_field_mgr * | mgr, | |
size_t | size | |||
) | [static] |
Definition at line 1154 of file utils.c.
References ast_calloc, ast_string_field_mgr::pool, ast_string_field_pool::prev, ast_string_field_mgr::size, ast_string_field_mgr::space, and ast_string_field_mgr::used.
Referenced by __ast_string_field_alloc_space(), __ast_string_field_index_build_va(), and __ast_string_field_init().
01155 { 01156 struct ast_string_field_pool *pool; 01157 01158 if (!(pool = ast_calloc(1, sizeof(*pool) + size))) 01159 return -1; 01160 01161 pool->prev = mgr->pool; 01162 mgr->pool = pool; 01163 mgr->size = size; 01164 mgr->space = size; 01165 mgr->used = 0; 01166 01167 return 0; 01168 }
int ast_atomic_fetchadd_int_slow | ( | volatile int * | p, | |
int | v | |||
) |
Definition at line 1249 of file utils.c.
References ast_mutex_lock(), and ast_mutex_unlock().
01250 { 01251 int ret; 01252 ast_mutex_lock(&fetchadd_m); 01253 ret = *p; 01254 *p += v; 01255 ast_mutex_unlock(&fetchadd_m); 01256 return ret; 01257 }
int ast_base64decode | ( | unsigned char * | dst, | |
const char * | src, | |||
int | max | |||
) |
decode BASE64 encoded text
Definition at line 328 of file utils.c.
Referenced by __ast_check_signature(), base64_decode(), and osp_validate_token().
00329 { 00330 int cnt = 0; 00331 unsigned int byte = 0; 00332 unsigned int bits = 0; 00333 int incnt = 0; 00334 while(*src && (cnt < max)) { 00335 /* Shift in 6 bits of input */ 00336 byte <<= 6; 00337 byte |= (b2a[(int)(*src)]) & 0x3f; 00338 bits += 6; 00339 src++; 00340 incnt++; 00341 /* If we have at least 8 bits left over, take that character 00342 off the top */ 00343 if (bits >= 8) { 00344 bits -= 8; 00345 *dst = (byte >> bits) & 0xff; 00346 dst++; 00347 cnt++; 00348 } 00349 } 00350 /* Dont worry about left over bits, they're extra anyway */ 00351 return cnt; 00352 }
int ast_base64encode | ( | char * | dst, | |
const unsigned char * | src, | |||
int | srclen, | |||
int | max | |||
) |
Definition at line 406 of file utils.c.
References ast_base64encode_full().
Referenced by __ast_sign(), aji_act_hook(), base64_encode(), build_secret(), and osp_check_destination().
00407 { 00408 return ast_base64encode_full(dst, src, srclen, max, 0); 00409 }
int ast_base64encode_full | ( | char * | dst, | |
const unsigned char * | src, | |||
int | srclen, | |||
int | max, | |||
int | linebreaks | |||
) |
encode text to BASE64 coding
Definition at line 355 of file utils.c.
Referenced by ast_base64encode().
00356 { 00357 int cnt = 0; 00358 int col = 0; 00359 unsigned int byte = 0; 00360 int bits = 0; 00361 int cntin = 0; 00362 /* Reserve space for null byte at end of string */ 00363 max--; 00364 while ((cntin < srclen) && (cnt < max)) { 00365 byte <<= 8; 00366 byte |= *(src++); 00367 bits += 8; 00368 cntin++; 00369 if ((bits == 24) && (cnt + 4 <= max)) { 00370 *dst++ = base64[(byte >> 18) & 0x3f]; 00371 *dst++ = base64[(byte >> 12) & 0x3f]; 00372 *dst++ = base64[(byte >> 6) & 0x3f]; 00373 *dst++ = base64[byte & 0x3f]; 00374 cnt += 4; 00375 col += 4; 00376 bits = 0; 00377 byte = 0; 00378 } 00379 if (linebreaks && (cnt < max) && (col == 64)) { 00380 *dst++ = '\n'; 00381 cnt++; 00382 col = 0; 00383 } 00384 } 00385 if (bits && (cnt + 4 <= max)) { 00386 /* Add one last character for the remaining bits, 00387 padding the rest with 0 */ 00388 byte <<= 24 - bits; 00389 *dst++ = base64[(byte >> 18) & 0x3f]; 00390 *dst++ = base64[(byte >> 12) & 0x3f]; 00391 if (bits == 16) 00392 *dst++ = base64[(byte >> 6) & 0x3f]; 00393 else 00394 *dst++ = '='; 00395 *dst++ = '='; 00396 cnt += 4; 00397 } 00398 if (linebreaks && (cnt < max)) { 00399 *dst++ = '\n'; 00400 cnt++; 00401 } 00402 *dst = '\0'; 00403 return cnt; 00404 }
int ast_build_string | ( | char ** | buffer, | |
size_t * | space, | |||
const char * | fmt, | |||
... | ||||
) |
Definition at line 996 of file utils.c.
References ast_build_string_va().
Referenced by __queues_show(), add_codec_to_sdp(), add_noncodec_to_sdp(), add_sdp(), add_t38_sdp(), ast_cdr_serialize_variables(), ast_http_setcookie(), config_odbc(), config_pgsql(), function_realtime_read(), generic_http_callback(), html_translate(), httpstatus_callback(), initreqprep(), pbx_builtin_serialize_variables(), print_uptimestr(), show_translation(), show_translation_deprecated(), transmit_notify_with_mwi(), transmit_state_notify(), and xml_translate().
00997 { 00998 va_list ap; 00999 int result; 01000 01001 va_start(ap, fmt); 01002 result = ast_build_string_va(buffer, space, fmt, ap); 01003 va_end(ap); 01004 01005 return result; 01006 }
int ast_build_string_va | ( | char ** | buffer, | |
size_t * | space, | |||
const char * | fmt, | |||
va_list | ap | |||
) |
Build a string in a buffer, designed to be called repeatedly.
This is a wrapper for snprintf, that properly handles the buffer pointer and buffer space available.
buffer | current position in buffer to place string into (will be updated on return) | |
space | remaining space in buffer (will be updated on return) | |
fmt | printf-style format string | |
ap | varargs list of arguments for format |
Definition at line 977 of file utils.c.
Referenced by ast_build_string().
00978 { 00979 int result; 00980 00981 if (!buffer || !*buffer || !space || !*space) 00982 return -1; 00983 00984 result = vsnprintf(*buffer, *space, fmt, ap); 00985 00986 if (result < 0) 00987 return -1; 00988 else if (result > *space) 00989 result = *space; 00990 00991 *buffer += result; 00992 *space -= result; 00993 return 0; 00994 }
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.
ast_carefulwrite
Definition at line 915 of file utils.c.
References errno, pollfd::events, pollfd::fd, poll(), and POLLOUT.
Referenced by agi_debug_cli(), ast_cli(), astman_append(), and process_events().
00916 { 00917 /* Try to write string, but wait no more than ms milliseconds 00918 before timing out */ 00919 int res = 0; 00920 struct pollfd fds[1]; 00921 while (len) { 00922 res = write(fd, s, len); 00923 if ((res < 0) && (errno != EAGAIN)) { 00924 return -1; 00925 } 00926 if (res < 0) 00927 res = 0; 00928 len -= res; 00929 s += res; 00930 res = 0; 00931 if (len) { 00932 fds[0].fd = fd; 00933 fds[0].events = POLLOUT; 00934 /* Wait until writable again */ 00935 res = poll(fds, 1, timeoutms); 00936 if (res < 1) 00937 return -1; 00938 } 00939 } 00940 return res; 00941 }
int ast_dynamic_str_thread_build_va | ( | struct ast_dynamic_str ** | buf, | |
size_t | max_len, | |||
struct ast_threadstorage * | ts, | |||
int | append, | |||
const char * | fmt, | |||
va_list | ap | |||
) |
Core functionality of ast_dynamic_str_thread_(set|append)_va.
The arguments to this function are the same as those described for ast_dynamic_str_thread_set_va except for an addition argument, append. If append is non-zero, this will append to the current string instead of writing over it.
Definition at line 1285 of file utils.c.
References ast_realloc, ast_threadstorage::key, and offset.
01287 { 01288 int res; 01289 int offset = (append && (*buf)->len) ? strlen((*buf)->str) : 0; 01290 #if defined(DEBUG_THREADLOCALS) 01291 struct ast_dynamic_str *old_buf = *buf; 01292 #endif /* defined(DEBUG_THREADLOCALS) */ 01293 01294 res = vsnprintf((*buf)->str + offset, (*buf)->len - offset, fmt, ap); 01295 01296 /* Check to see if there was not enough space in the string buffer to prepare 01297 * the string. Also, if a maximum length is present, make sure the current 01298 * length is less than the maximum before increasing the size. */ 01299 if ((res + offset + 1) > (*buf)->len && (max_len ? ((*buf)->len < max_len) : 1)) { 01300 /* Set the new size of the string buffer to be the size needed 01301 * to hold the resulting string (res) plus one byte for the 01302 * terminating '\0'. If this size is greater than the max, set 01303 * the new length to be the maximum allowed. */ 01304 if (max_len) 01305 (*buf)->len = ((res + offset + 1) < max_len) ? (res + offset + 1) : max_len; 01306 else 01307 (*buf)->len = res + offset + 1; 01308 01309 if (!(*buf = ast_realloc(*buf, (*buf)->len + sizeof(*(*buf))))) 01310 return AST_DYNSTR_BUILD_FAILED; 01311 01312 if (append) 01313 (*buf)->str[offset] = '\0'; 01314 01315 if (ts) { 01316 pthread_setspecific(ts->key, *buf); 01317 #if defined(DEBUG_THREADLOCALS) 01318 __ast_threadstorage_object_replace(old_buf, *buf, (*buf)->len + sizeof(*(*buf))); 01319 #endif /* defined(DEBUG_THREADLOCALS) */ 01320 } 01321 01322 /* va_end() and va_start() must be done before calling 01323 * vsnprintf() again. */ 01324 return AST_DYNSTR_BUILD_RETRY; 01325 } 01326 01327 return res; 01328 }
void ast_enable_packet_fragmentation | ( | int | sock | ) |
Definition at line 1330 of file utils.c.
References ast_log(), and LOG_WARNING.
Referenced by ast_netsock_bindaddr(), and reload_config().
01331 { 01332 #if defined(HAVE_IP_MTU_DISCOVER) 01333 int val = IP_PMTUDISC_DONT; 01334 01335 if (setsockopt(sock, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val))) 01336 ast_log(LOG_WARNING, "Unable to disable PMTU discovery. Large UDP packets may fail to be delivered when sent from this socket.\n"); 01337 #endif /* HAVE_IP_MTU_DISCOVER */ 01338 }
int ast_false | ( | const char * | val | ) |
Make sure something is false
Determine if a string containing a boolean value is "false". This function checks to see whether a string passed to it is an indication of an "false" value. It checks to see if the string is "no", "false", "n", "f", "off" or "0".
Returns 0 if val is a NULL pointer, -1 if "false", and 0 otherwise.
Definition at line 1025 of file utils.c.
References ast_strlen_zero().
Referenced by aji_create_client(), aji_load_config(), ast_rtp_reload(), ast_udptl_reload(), handle_common_options(), init_acf_query(), load_config(), load_odbc_config(), reload(), run_agi(), set_insecure_flags(), sla_build_trunk(), and strings_to_mask().
01026 { 01027 if (ast_strlen_zero(s)) 01028 return 0; 01029 01030 /* Determine if this is a false value */ 01031 if (!strcasecmp(s, "no") || 01032 !strcasecmp(s, "false") || 01033 !strcasecmp(s, "n") || 01034 !strcasecmp(s, "f") || 01035 !strcasecmp(s, "0") || 01036 !strcasecmp(s, "off")) 01037 return -1; 01038 01039 return 0; 01040 }
int ast_get_time_t | ( | const char * | src, | |
time_t * | dst, | |||
time_t | _default, | |||
int * | consumed | |||
) |
get values from config variables.
Definition at line 1262 of file utils.c.
References ast_strlen_zero(), and t.
Referenced by acf_strftime(), build_peer(), cache_lookup_internal(), handle_saydatetime(), load_password(), play_message_datetime(), realtime_peer(), and sayunixtime_exec().
01263 { 01264 long t; 01265 int scanned; 01266 01267 if (dst == NULL) 01268 return -1; 01269 01270 *dst = _default; 01271 01272 if (ast_strlen_zero(src)) 01273 return -1; 01274 01275 /* only integer at the moment, but one day we could accept more formats */ 01276 if (sscanf(src, "%ld%n", &t, &scanned) == 1) { 01277 *dst = t; 01278 if (consumed) 01279 *consumed = scanned; 01280 return 0; 01281 } else 01282 return -1; 01283 }
struct hostent* ast_gethostbyname | ( | const char * | host, | |
struct ast_hostent * | hp | |||
) | [read] |
Re-entrant (thread safe) version of gethostbyname that replaces the standard gethostbyname (which is not thread safe).
Definition at line 184 of file utils.c.
References ast_hostent::buf, gethostbyname_r(), ast_hostent::hp, and s.
Referenced by __ast_http_load(), ast_dnsmgr_lookup(), ast_find_ourip(), ast_get_ip_or_srv(), ast_sip_ouraddrfor(), build_peer(), check_via(), create_addr(), dnsmgr_refresh(), festival_exec(), gtalk_load_config(), gtalk_update_stun(), iax_template_parse(), launch_netscript(), load_module(), parse_register_contact(), process_sdp(), reload_config(), rpt_exec(), rtcp_do_debug_ip(), rtcp_do_debug_ip_deprecated(), rtp_do_debug_ip(), set_address_from_contact(), set_config(), set_destination(), sip_devicestate(), sip_do_debug_ip(), and udptl_do_debug_ip().
00185 { 00186 int res; 00187 int herrno; 00188 int dots=0; 00189 const char *s; 00190 struct hostent *result = NULL; 00191 /* Although it is perfectly legitimate to lookup a pure integer, for 00192 the sake of the sanity of people who like to name their peers as 00193 integers, we break with tradition and refuse to look up a 00194 pure integer */ 00195 s = host; 00196 res = 0; 00197 while(s && *s) { 00198 if (*s == '.') 00199 dots++; 00200 else if (!isdigit(*s)) 00201 break; 00202 s++; 00203 } 00204 if (!s || !*s) { 00205 /* Forge a reply for IP's to avoid octal IP's being interpreted as octal */ 00206 if (dots != 3) 00207 return NULL; 00208 memset(hp, 0, sizeof(struct ast_hostent)); 00209 hp->hp.h_addrtype = AF_INET; 00210 hp->hp.h_addr_list = (void *) hp->buf; 00211 hp->hp.h_addr = hp->buf + sizeof(void *); 00212 if (inet_pton(AF_INET, host, hp->hp.h_addr) > 0) 00213 return &hp->hp; 00214 return NULL; 00215 00216 } 00217 #ifdef HAVE_GETHOSTBYNAME_R_5 00218 result = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &herrno); 00219 00220 if (!result || !hp->hp.h_addr_list || !hp->hp.h_addr_list[0]) 00221 return NULL; 00222 #else 00223 res = gethostbyname_r(host, &hp->hp, hp->buf, sizeof(hp->buf), &result, &herrno); 00224 00225 if (res || !result || !hp->hp.h_addr_list || !hp->hp.h_addr_list[0]) 00226 return NULL; 00227 #endif 00228 return &hp->hp; 00229 }
const char* ast_inet_ntoa | ( | struct in_addr | ia | ) |
ast_inet_ntoa: Recursive thread safe replacement of inet_ntoa
thread-safe replacement for inet_ntoa().
Definition at line 495 of file utils.c.
Referenced by __attempt_transmit(), __iax2_show_peers(), __sip_show_channels(), __sip_xmit(), _sip_show_peer(), _sip_show_peers(), accept_thread(), add_sdp(), add_t38_sdp(), ast_apply_ha(), ast_netsock_bindaddr(), ast_rtcp_read(), ast_rtcp_write_rr(), ast_rtcp_write_sr(), ast_rtp_raw_write(), ast_rtp_read(), ast_rtp_sendcng(), ast_rtp_senddigit_begin(), ast_rtp_senddigit_continuation(), ast_rtp_senddigit_end(), ast_sip_ouraddrfor(), ast_udptl_bridge(), ast_udptl_read(), ast_udptl_write(), authenticate(), bridge_native_loop(), bridge_p2p_rtp_write(), build_callid_pvt(), build_callid_registry(), build_contact(), build_reply_digest(), build_rpid(), build_via(), check_access(), check_user_full(), check_via(), copy_via_headers(), create_addr_from_peer(), dnsmgr_refresh(), dump_addr(), dump_ipaddr(), dundi_rexmit(), dundi_show_peer(), dundi_show_peers(), dundi_show_trans(), dundi_showframe(), dundi_xmit(), external_rtp_create(), find_callno(), find_command(), find_peer(), find_subchannel_and_lock(), find_tpeer(), function_iaxpeer(), function_sipchaninfo_read(), function_sippeer(), generic_http_callback(), get_input(), gtalk_create_candidates(), gtalk_update_stun(), handle_command_response(), handle_error(), handle_open_receive_channel_ack_message(), handle_request(), handle_request_bye(), handle_request_register(), handle_request_subscribe(), handle_response(), handle_response_refer(), handle_show_http(), handle_showmanconn(), http_server_start(), httpstatus_callback(), iax2_ack_registry(), iax2_prov_app(), iax2_show_channels(), iax2_show_peer(), iax2_show_registry(), iax2_trunk_queue(), iax_server(), iax_showframe(), initreqprep(), load_module(), mgcp_show_endpoints(), mgcpsock_read(), oh323_addrcmp_str(), oh323_call(), oh323_set_rtp_peer(), parse_register_contact(), process_message(), process_rfc3389(), process_sdp(), raw_hangup(), realtime_peer(), realtime_update_peer(), realtime_user(), reg_source_db(), register_verify(), registry_rerequest(), reload_config(), resend_response(), retrans_pkt(), rpt_exec(), rtcp_do_debug_ip(), rtcp_do_debug_ip_deprecated(), rtp_do_debug_ip(), send_dtmf(), send_packet(), send_request(), send_response(), send_trunk(), session_do(), set_config(), set_destination(), setup_incoming_call(), sip_do_debug_ip(), sip_do_debug_peer(), sip_handle_t38_reinvite(), sip_poke_peer(), sip_set_rtp_peer(), sip_set_udptl_peer(), sip_show_channel(), sip_show_settings(), sipsock_read(), skinny_session(), skinny_show_devices(), socket_process(), timing_read(), transmit_notify_with_mwi(), udptl_do_debug_ip(), and update_registry().
00496 { 00497 char *buf; 00498 00499 if (!(buf = ast_threadstorage_get(&inet_ntoa_buf, INET_ADDRSTRLEN))) 00500 return ""; 00501 00502 return inet_ntop(AF_INET, &ia, buf, INET_ADDRSTRLEN); 00503 }
void ast_join | ( | char * | s, | |
size_t | len, | |||
char *const | w[] | |||
) |
Definition at line 1133 of file utils.c.
Referenced by __ast_cli_generator(), __ast_cli_register(), ast_builtins_init(), console_sendtext(), console_sendtext_deprecated(), find_best(), handle_agidumphtml(), handle_help(), handle_showagi(), help1(), and help_workhorse().
01134 { 01135 int x, ofs = 0; 01136 const char *src; 01137 01138 /* Join words into a string */ 01139 if (!s) 01140 return; 01141 for (x = 0; ofs < len && w[x]; x++) { 01142 if (x > 0) 01143 s[ofs++] = ' '; 01144 for (src = w[x]; *src && ofs < len; src++) 01145 s[ofs++] = *src; 01146 } 01147 if (ofs == len) 01148 ofs--; 01149 s[ofs] = '\0'; 01150 }
void ast_md5_hash | ( | char * | output, | |
char * | input | |||
) |
Produce 32 char MD5 hash of value.
Definition at line 294 of file utils.c.
References MD5Final(), MD5Init(), and MD5Update().
Referenced by auth_exec(), build_reply_digest(), check_auth(), checkmd5(), and md5().
00295 { 00296 struct MD5Context md5; 00297 unsigned char digest[16]; 00298 char *ptr; 00299 int x; 00300 00301 MD5Init(&md5); 00302 MD5Update(&md5, (unsigned char *)input, strlen(input)); 00303 MD5Final(digest, &md5); 00304 ptr = output; 00305 for (x = 0; x < 16; x++) 00306 ptr += sprintf(ptr, "%2.2x", digest[x]); 00307 }
AST_MUTEX_DEFINE_STATIC | ( | fetchadd_m | ) |
AST_MUTEX_DEFINE_STATIC | ( | randomlock | ) |
glibc puts a lock inside random(3), so that the results are thread-safe. BSD libc (and others) do not.
AST_MUTEX_DEFINE_STATIC | ( | test_lock2 | ) |
AST_MUTEX_DEFINE_STATIC | ( | test_lock | ) |
AST_MUTEX_DEFINE_STATIC | ( | __mutex | ) |
char* ast_process_quotes_and_slashes | ( | char * | start, | |
char | find, | |||
char | replace_with | |||
) |
Process a string to find and replace characters.
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 1107 of file utils.c.
Referenced by handle_context_add_extension(), handle_context_add_extension_deprecated(), and pbx_load_config().
01108 { 01109 char *dataPut = start; 01110 int inEscape = 0; 01111 int inQuotes = 0; 01112 01113 for (; *start; start++) { 01114 if (inEscape) { 01115 *dataPut++ = *start; /* Always goes verbatim */ 01116 inEscape = 0; 01117 } else { 01118 if (*start == '\\') { 01119 inEscape = 1; /* Do not copy \ into the data */ 01120 } else if (*start == '\'') { 01121 inQuotes = 1 - inQuotes; /* Do not copy ' into the data */ 01122 } else { 01123 /* Replace , with |, unless in quotes */ 01124 *dataPut++ = inQuotes ? *start : ((*start == find) ? replace_with : *start); 01125 } 01126 } 01127 } 01128 if (start != dataPut) 01129 *dataPut = 0; 01130 return dataPut; 01131 }
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 861 of file utils.c.
References 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.
00864 { 00865 #if !defined(LOW_MEMORY) 00866 struct thr_arg *a; 00867 #endif 00868 00869 if (!attr) { 00870 attr = alloca(sizeof(*attr)); 00871 pthread_attr_init(attr); 00872 } 00873 00874 #ifdef __linux__ 00875 /* On Linux, pthread_attr_init() defaults to PTHREAD_EXPLICIT_SCHED, 00876 which is kind of useless. Change this here to 00877 PTHREAD_INHERIT_SCHED; that way the -p option to set realtime 00878 priority will propagate down to new threads by default. 00879 This does mean that callers cannot set a different priority using 00880 PTHREAD_EXPLICIT_SCHED in the attr argument; instead they must set 00881 the priority afterwards with pthread_setschedparam(). */ 00882 if ((errno = pthread_attr_setinheritsched(attr, PTHREAD_INHERIT_SCHED))) 00883 ast_log(LOG_WARNING, "pthread_attr_setinheritsched: %s\n", strerror(errno)); 00884 #endif 00885 00886 if (!stacksize) 00887 stacksize = AST_STACKSIZE; 00888 00889 if ((errno = pthread_attr_setstacksize(attr, stacksize ? stacksize : AST_STACKSIZE))) 00890 ast_log(LOG_WARNING, "pthread_attr_setstacksize: %s\n", strerror(errno)); 00891 00892 #if !defined(LOW_MEMORY) 00893 if ((a = ast_malloc(sizeof(*a)))) { 00894 a->start_routine = start_routine; 00895 a->data = data; 00896 start_routine = dummy_start; 00897 asprintf(&a->name, "%-20s started at [%5d] %s %s()", 00898 start_fn, line, file, caller); 00899 data = a; 00900 } 00901 #endif /* !LOW_MEMORY */ 00902 00903 return pthread_create(thread, attr, start_routine, data); /* We're in ast_pthread_create, so it's okay */ 00904 }
long int ast_random | ( | void | ) |
Definition at line 1097 of file utils.c.
References ast_mutex_lock(), and ast_mutex_unlock().
Referenced by acf_rand_exec(), agent_new(), ast_lock_path(), ast_rtp_new_init(), ast_rtp_new_with_bindaddr(), ast_udptl_new_with_bindaddr(), authenticate_request(), build_gateway(), build_iv(), build_reply_digest(), calc_metric(), calc_rxstamp(), check_auth(), generate_random_string(), get_trans_id(), gtalk_alloc(), gtalk_create_candidates(), gtalk_new(), handle_response_invite(), iax2_start_transfer(), local_new(), make_email_file(), make_our_tag(), moh_files_alloc(), ogg_vorbis_rewrite(), page_exec(), process_message(), process_weights(), random_exec(), reg_source_db(), registry_authrequest(), reqprep(), sip_alloc(), socket_read(), start_rtp(), stun_req_id(), transmit_fake_auth_response(), transmit_invite(), transmit_register(), transmit_response_using_temp(), try_calling(), try_firmware(), and zt_new().
01098 { 01099 long int res; 01100 ast_mutex_lock(&randomlock); 01101 res = random(); 01102 ast_mutex_unlock(&randomlock); 01103 return res; 01104 }
void ast_sha1_hash | ( | char * | output, | |
char * | input | |||
) |
Produce 40 char SHA1 hash of value.
Definition at line 310 of file utils.c.
References SHA1Input(), SHA1Reset(), and SHA1Result().
Referenced by aji_act_hook(), jabber_make_auth(), and sha1().
00311 { 00312 struct SHA1Context sha; 00313 char *ptr; 00314 int x; 00315 uint8_t Message_Digest[20]; 00316 00317 SHA1Reset(&sha); 00318 00319 SHA1Input(&sha, (const unsigned char *) input, strlen(input)); 00320 00321 SHA1Result(&sha, Message_Digest); 00322 ptr = output; 00323 for (x = 0; x < 20; x++) 00324 ptr += sprintf(ptr, "%2.2x", Message_Digest[x]); 00325 }
char* ast_strip_quoted | ( | char * | s, | |
const char * | beg_quotes, | |||
const char * | end_quotes | |||
) |
Definition at line 943 of file utils.c.
Referenced by ast_register_file_version(), iftime(), and parse_dial_string().
00944 { 00945 char *e; 00946 char *q; 00947 00948 s = ast_strip(s); 00949 if ((q = strchr(beg_quotes, *s)) && *q != '\0') { 00950 e = s + strlen(s) - 1; 00951 if (*e == *(end_quotes + (q - beg_quotes))) { 00952 s++; 00953 *e = '\0'; 00954 } 00955 } 00956 00957 return s; 00958 }
AST_THREADSTORAGE | ( | inet_ntoa_buf | , | |
inet_ntoa_buf_init | ||||
) |
int ast_true | ( | const char * | val | ) |
Make sure something is true
Determine if a string containing a boolean value is "true". This function checks to see whether a string passed to it is an indication of an "true" value. It checks to see if the string is "yes", "true", "y", "t", "on" or "1".
Returns 0 if val is a NULL pointer, -1 if "true", and 0 otherwise.
Definition at line 1008 of file utils.c.
References ast_strlen_zero().
Referenced by __ast_http_load(), __login_exec(), _parse(), action_agent_callback_login(), action_agent_logoff(), action_originate(), action_setcdruserfield(), action_updateconfig(), aji_create_client(), aji_load_config(), apply_option(), apply_outgoing(), ast_jb_read_conf(), ast_readconfig(), authenticate(), build_device(), build_gateway(), build_peer(), build_user(), connect_link(), do_directory(), do_reload(), festival_exec(), get_encrypt_methods(), gtalk_load_config(), handle_common_options(), handle_save_dialplan(), init_logger_chain(), init_manager(), load_config(), load_module(), load_modules(), load_moh_classes(), load_odbc_config(), load_rpt_vars(), loadconfigurationfile(), manager_add_queue_member(), manager_pause_queue_member(), odbc_load_module(), osp_load(), parse_config(), pbx_load_config(), pbx_load_users(), process_zap(), queue_set_param(), read_agent_config(), reload(), reload_config(), reload_queues(), set_config(), set_insecure_flags(), sla_load_config(), smdi_load(), start_monitor_action(), strings_to_mask(), and update_common_options().
01009 { 01010 if (ast_strlen_zero(s)) 01011 return 0; 01012 01013 /* Determine if this is a true value */ 01014 if (!strcasecmp(s, "yes") || 01015 !strcasecmp(s, "true") || 01016 !strcasecmp(s, "y") || 01017 !strcasecmp(s, "t") || 01018 !strcasecmp(s, "1") || 01019 !strcasecmp(s, "on")) 01020 return -1; 01021 01022 return 0; 01023 }
struct timeval ast_tvadd | ( | struct timeval | a, | |
struct timeval | b | |||
) | [read] |
Definition at line 1062 of file utils.c.
References ONE_MILLION, and tvfix().
Referenced by __get_from_jb(), agent_hangup(), agent_read(), ast_channel_bridge(), ast_channel_spy_trigger_wait(), ast_rtp_sendcng(), ast_rtp_senddigit_begin(), ast_rtp_senddigit_end(), ast_sched_runq(), ast_smoother_read(), ast_translate(), calc_timestamp(), do_cdr(), iax2_process_thread(), jb_get_and_deliver(), monmp3thread(), mp3_exec(), NBScat_exec(), sched_settime(), sched_thread(), schedule_delivery(), and sla_process_timers().
01063 { 01064 /* consistency checks to guarantee usec in 0..999999 */ 01065 a = tvfix(a); 01066 b = tvfix(b); 01067 a.tv_sec += b.tv_sec; 01068 a.tv_usec += b.tv_usec; 01069 if (a.tv_usec >= ONE_MILLION) { 01070 a.tv_sec++; 01071 a.tv_usec -= ONE_MILLION; 01072 } 01073 return a; 01074 }
struct timeval ast_tvsub | ( | struct timeval | a, | |
struct timeval | b | |||
) | [read] |
Returns the difference of two timevals a - b.
Definition at line 1076 of file utils.c.
References ONE_MILLION, and tvfix().
Referenced by ast_channel_bridge(), ast_sched_dump(), ast_translate(), calc_rxstamp(), and calc_timestamp().
01077 { 01078 /* consistency checks to guarantee usec in 0..999999 */ 01079 a = tvfix(a); 01080 b = tvfix(b); 01081 a.tv_sec -= b.tv_sec; 01082 a.tv_usec -= b.tv_usec; 01083 if (a.tv_usec < 0) { 01084 a.tv_sec-- ; 01085 a.tv_usec += ONE_MILLION; 01086 } 01087 return a; 01088 }
char* ast_unescape_semicolon | ( | char * | s | ) |
Strip backslash for "escaped" semicolons.
s The string to be stripped (will be modified).
Definition at line 960 of file utils.c.
Referenced by sip_notify().
00961 { 00962 char *e; 00963 char *work = s; 00964 00965 while ((e = strchr(work, ';'))) { 00966 if ((e > work) && (*(e-1) == '\\')) { 00967 memmove(e - 1, e, strlen(e) + 1); 00968 work = e; 00969 } else { 00970 work = e + 1; 00971 } 00972 } 00973 00974 return s; 00975 }
void ast_uri_decode | ( | char * | s | ) |
ast_uri_decode: Decode SIP URI, URN, URL (overwrite the string)
Decode URI, URN, URL (overwrite string).
Definition at line 478 of file utils.c.
Referenced by check_user_full(), get_also_info(), get_destination(), get_refer_info(), handle_request_invite(), handle_uri(), register_verify(), sip_new(), and uridecode().
00479 { 00480 char *o; 00481 unsigned int tmp; 00482 00483 for (o = s; *s; s++, o++) { 00484 if (*s == '%' && strlen(s) > 2 && sscanf(s + 1, "%2x", &tmp) == 1) { 00485 /* have '%', two chars and correct parsing */ 00486 *o = tmp; 00487 s += 2; /* Will be incremented once more when we break out */ 00488 } else /* all other cases, just copy */ 00489 *o = *s; 00490 } 00491 *o = '\0'; 00492 }
char* ast_uri_encode | ( | const char * | string, | |
char * | outbuf, | |||
int | buflen, | |||
int | doreserved | |||
) |
ast_uri_encode: Turn text string to URI-encoded XX version
Turn text string to URI-encoded XX version At this point, we're converting from ISO-8859-x (8-bit), not UTF8 as in the SIP protocol spec If doreserved == 1 we will convert reserved characters also. RFC 2396, section 2.4 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 447 of file utils.c.
Referenced by initreqprep(), and uriencode().
00448 { 00449 char *reserved = ";/?:@&=+$, "; /* Reserved chars */ 00450 00451 const char *ptr = string; /* Start with the string */ 00452 char *out = NULL; 00453 char *buf = NULL; 00454 00455 ast_copy_string(outbuf, string, buflen); 00456 00457 /* If there's no characters to convert, just go through and don't do anything */ 00458 while (*ptr) { 00459 if (((unsigned char) *ptr) > 127 || (doreserved && strchr(reserved, *ptr)) ) { 00460 /* Oops, we need to start working here */ 00461 if (!buf) { 00462 buf = outbuf; 00463 out = buf + (ptr - string) ; /* Set output ptr */ 00464 } 00465 out += sprintf(out, "%%%02x", (unsigned char) *ptr); 00466 } else if (buf) { 00467 *out = *ptr; /* Continue copying the string */ 00468 out++; 00469 } 00470 ptr++; 00471 } 00472 if (buf) 00473 *out = '\0'; 00474 return outbuf; 00475 }
int ast_utils_init | ( | void | ) |
Definition at line 1340 of file utils.c.
References ast_cli_register_multiple(), and base64_init().
Referenced by main().
01341 { 01342 base64_init(); 01343 #ifdef DEBUG_THREADS 01344 ast_cli_register_multiple(utils_cli, sizeof(utils_cli) / sizeof(utils_cli[0])); 01345 #endif 01346 return 0; 01347 }
int ast_wait_for_input | ( | int | fd, | |
int | ms | |||
) |
Definition at line 906 of file utils.c.
References pollfd::events, pollfd::fd, poll(), POLLIN, and POLLPRI.
Referenced by action_waitevent(), ast_moh_destroy_one(), and http_root().
00907 { 00908 struct pollfd pfd[1]; 00909 memset(pfd, 0, sizeof(pfd)); 00910 pfd[0].fd = fd; 00911 pfd[0].events = POLLIN|POLLPRI; 00912 return poll(pfd, 1, ms); 00913 }
static void base64_init | ( | void | ) | [static] |
Definition at line 411 of file utils.c.
Referenced by ast_utils_init().
00412 { 00413 int x; 00414 memset(b2a, -1, sizeof(b2a)); 00415 /* Initialize base-64 Conversion table */ 00416 for (x = 0; x < 26; x++) { 00417 /* A-Z */ 00418 base64[x] = 'A' + x; 00419 b2a['A' + x] = x; 00420 /* a-z */ 00421 base64[x + 26] = 'a' + x; 00422 b2a['a' + x] = x + 26; 00423 /* 0-9 */ 00424 if (x < 10) { 00425 base64[x + 52] = '0' + x; 00426 b2a['0' + x] = x + 52; 00427 } 00428 } 00429 base64[62] = '+'; 00430 base64[63] = '/'; 00431 b2a[(int)'+'] = 62; 00432 b2a[(int)'/'] = 63; 00433 }
static void* dummy_start | ( | void * | data | ) | [static] |
Definition at line 817 of file utils.c.
References AST_LIST_INSERT_TAIL, AST_MUTEX_KIND, ast_register_thread(), ast_unregister_thread(), thr_arg::data, free, thr_arg::name, pthread_mutex_init, pthread_mutex_lock, pthread_mutex_unlock, thr_arg::start_routine, and strdup.
Referenced by ast_pthread_create_stack().
00818 { 00819 void *ret; 00820 struct thr_arg a = *((struct thr_arg *) data); /* make a local copy */ 00821 #ifdef DEBUG_THREADS 00822 struct thr_lock_info *lock_info; 00823 pthread_mutexattr_t mutex_attr; 00824 #endif 00825 00826 /* note that even though data->name is a pointer to allocated memory, 00827 we are not freeing it here because ast_register_thread is going to 00828 keep a copy of the pointer and then ast_unregister_thread will 00829 free the memory 00830 */ 00831 free(data); 00832 ast_register_thread(a.name); 00833 pthread_cleanup_push(ast_unregister_thread, (void *) pthread_self()); 00834 00835 #ifdef DEBUG_THREADS 00836 if (!(lock_info = ast_threadstorage_get(&thread_lock_info, sizeof(*lock_info)))) 00837 return NULL; 00838 00839 lock_info->thread_id = pthread_self(); 00840 lock_info->thread_name = strdup(a.name); 00841 00842 pthread_mutexattr_init(&mutex_attr); 00843 pthread_mutexattr_settype(&mutex_attr, AST_MUTEX_KIND); 00844 pthread_mutex_init(&lock_info->lock, &mutex_attr); 00845 pthread_mutexattr_destroy(&mutex_attr); 00846 00847 pthread_mutex_lock(&lock_infos_lock.mutex); /* Intentionally not the wrapper */ 00848 AST_LIST_INSERT_TAIL(&lock_infos, lock_info, entry); 00849 pthread_mutex_unlock(&lock_infos_lock.mutex); /* Intentionally not the wrapper */ 00850 #endif /* DEBUG_THREADS */ 00851 00852 ret = a.start_routine(a.data); 00853 00854 pthread_cleanup_pop(1); 00855 00856 return ret; 00857 }
static int gethostbyname_r | ( | const char * | name, | |
struct hostent * | ret, | |||
char * | buf, | |||
size_t | buflen, | |||
struct hostent ** | result, | |||
int * | h_errnop | |||
) | [static] |
Reentrant replacement for gethostbyname for BSD-based systems.
Definition at line 84 of file utils.c.
References ast_mutex_lock(), ast_mutex_unlock(), ERANGE, and gethostbyname.
Referenced by ast_gethostbyname().
00087 { 00088 int hsave; 00089 struct hostent *ph; 00090 ast_mutex_lock(&__mutex); /* begin critical area */ 00091 hsave = h_errno; 00092 00093 ph = gethostbyname(name); 00094 *h_errnop = h_errno; /* copy h_errno to *h_herrnop */ 00095 if (ph == NULL) { 00096 *result = NULL; 00097 } else { 00098 char **p, **q; 00099 char *pbuf; 00100 int nbytes=0; 00101 int naddr=0, naliases=0; 00102 /* determine if we have enough space in buf */ 00103 00104 /* count how many addresses */ 00105 for (p = ph->h_addr_list; *p != 0; p++) { 00106 nbytes += ph->h_length; /* addresses */ 00107 nbytes += sizeof(*p); /* pointers */ 00108 naddr++; 00109 } 00110 nbytes += sizeof(*p); /* one more for the terminating NULL */ 00111 00112 /* count how many aliases, and total length of strings */ 00113 for (p = ph->h_aliases; *p != 0; p++) { 00114 nbytes += (strlen(*p)+1); /* aliases */ 00115 nbytes += sizeof(*p); /* pointers */ 00116 naliases++; 00117 } 00118 nbytes += sizeof(*p); /* one more for the terminating NULL */ 00119 00120 /* here nbytes is the number of bytes required in buffer */ 00121 /* as a terminator must be there, the minimum value is ph->h_length */ 00122 if (nbytes > buflen) { 00123 *result = NULL; 00124 ast_mutex_unlock(&__mutex); /* end critical area */ 00125 return ERANGE; /* not enough space in buf!! */ 00126 } 00127 00128 /* There is enough space. Now we need to do a deep copy! */ 00129 /* Allocation in buffer: 00130 from [0] to [(naddr-1) * sizeof(*p)]: 00131 pointers to addresses 00132 at [naddr * sizeof(*p)]: 00133 NULL 00134 from [(naddr+1) * sizeof(*p)] to [(naddr+naliases) * sizeof(*p)] : 00135 pointers to aliases 00136 at [(naddr+naliases+1) * sizeof(*p)]: 00137 NULL 00138 then naddr addresses (fixed length), and naliases aliases (asciiz). 00139 */ 00140 00141 *ret = *ph; /* copy whole structure (not its address!) */ 00142 00143 /* copy addresses */ 00144 q = (char **)buf; /* pointer to pointers area (type: char **) */ 00145 ret->h_addr_list = q; /* update pointer to address list */ 00146 pbuf = buf + ((naddr + naliases + 2) * sizeof(*p)); /* skip that area */ 00147 for (p = ph->h_addr_list; *p != 0; p++) { 00148 memcpy(pbuf, *p, ph->h_length); /* copy address bytes */ 00149 *q++ = pbuf; /* the pointer is the one inside buf... */ 00150 pbuf += ph->h_length; /* advance pbuf */ 00151 } 00152 *q++ = NULL; /* address list terminator */ 00153 00154 /* copy aliases */ 00155 ret->h_aliases = q; /* update pointer to aliases list */ 00156 for (p = ph->h_aliases; *p != 0; p++) { 00157 strcpy(pbuf, *p); /* copy alias strings */ 00158 *q++ = pbuf; /* the pointer is the one inside buf... */ 00159 pbuf += strlen(*p); /* advance pbuf */ 00160 *pbuf++ = 0; /* string terminator */ 00161 } 00162 *q++ = NULL; /* terminator */ 00163 00164 strcpy(pbuf, ph->h_name); /* copy alias strings */ 00165 ret->h_name = pbuf; 00166 pbuf += strlen(ph->h_name); /* advance pbuf */ 00167 *pbuf++ = 0; /* string terminator */ 00168 00169 *result = ret; /* and let *result point to structure */ 00170 00171 } 00172 h_errno = hsave; /* restore h_errno */ 00173 ast_mutex_unlock(&__mutex); /* end critical area */ 00174 00175 return (*result == NULL); /* return 0 on success, non-zero on error */ 00176 }
int test_for_thread_safety | ( | void | ) |
Definition at line 265 of file utils.c.
References ast_mutex_lock(), ast_mutex_unlock(), ast_pthread_create, and test_thread_body().
Referenced by main().
00266 { 00267 ast_mutex_lock(&test_lock2); 00268 ast_mutex_lock(&test_lock); 00269 lock_count += 1; 00270 ast_mutex_lock(&test_lock); 00271 lock_count += 1; 00272 ast_pthread_create(&test_thread, NULL, test_thread_body, NULL); 00273 usleep(100); 00274 if (lock_count != 2) 00275 test_errors++; 00276 ast_mutex_unlock(&test_lock); 00277 lock_count -= 1; 00278 usleep(100); 00279 if (lock_count != 1) 00280 test_errors++; 00281 ast_mutex_unlock(&test_lock); 00282 lock_count -= 1; 00283 if (lock_count != 0) 00284 test_errors++; 00285 ast_mutex_unlock(&test_lock2); 00286 usleep(100); 00287 if (lock_count != 0) 00288 test_errors++; 00289 pthread_join(test_thread, NULL); 00290 return(test_errors); /* return 0 on success. */ 00291 }
static void* test_thread_body | ( | void * | data | ) | [static] |
This is a regression test for recursive mutexes. test_for_thread_safety() will return 0 if recursive mutex locks are working properly, and non-zero if they are not working properly.
Definition at line 242 of file utils.c.
References ast_mutex_lock(), and ast_mutex_unlock().
Referenced by test_for_thread_safety().
00243 { 00244 ast_mutex_lock(&test_lock); 00245 lock_count += 10; 00246 if (lock_count != 10) 00247 test_errors++; 00248 ast_mutex_lock(&test_lock); 00249 lock_count += 10; 00250 if (lock_count != 20) 00251 test_errors++; 00252 ast_mutex_lock(&test_lock2); 00253 ast_mutex_unlock(&test_lock); 00254 lock_count -= 10; 00255 if (lock_count != 10) 00256 test_errors++; 00257 ast_mutex_unlock(&test_lock); 00258 lock_count -= 10; 00259 ast_mutex_unlock(&test_lock2); 00260 if (lock_count != 0) 00261 test_errors++; 00262 return NULL; 00263 }
static struct timeval tvfix | ( | struct timeval | a | ) | [static, read] |
Definition at line 1047 of file utils.c.
References ast_log(), LOG_WARNING, and ONE_MILLION.
Referenced by ast_tvadd(), and ast_tvsub().
01048 { 01049 if (a.tv_usec >= ONE_MILLION) { 01050 ast_log(LOG_WARNING, "warning too large timestamp %ld.%ld\n", 01051 a.tv_sec, (long int) a.tv_usec); 01052 a.tv_sec += a.tv_usec / ONE_MILLION; 01053 a.tv_usec %= ONE_MILLION; 01054 } else if (a.tv_usec < 0) { 01055 ast_log(LOG_WARNING, "warning negative timestamp %ld.%ld\n", 01056 a.tv_sec, (long int) a.tv_usec); 01057 a.tv_usec = 0; 01058 } 01059 return a; 01060 }
const char __ast_string_field_empty[] = "" |
char base64[64] [static] |
int lock_count = 0 [static] |
int test_errors = 0 [static] |
pthread_t test_thread [static] |