#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"
Include dependency graph for utils.c:
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. | |
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) |
thread-safe replacement for 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) |
timeval | ast_tvadd (struct timeval a, struct timeval b) |
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. s The string to be stripped (will be modified). | |
void | ast_uri_decode (char *s) |
Decode URI, URN, URL (overwrite string). | |
char * | ast_uri_encode (const char *string, char *outbuf, int buflen, int doreserved) |
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. | |
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 1212 of file utils.c.
References add_string_pool(), ast_string_field_pool::base, ast_string_field_mgr::pool, result, ast_string_field_mgr::size, ast_string_field_mgr::space, and ast_string_field_mgr::used.
01214 { 01215 char *result = NULL; 01216 01217 if (__builtin_expect(needed > mgr->space, 0)) { 01218 size_t new_size = mgr->size * 2; 01219 01220 while (new_size < needed) 01221 new_size *= 2; 01222 01223 if (add_string_pool(mgr, new_size)) 01224 return NULL; 01225 } 01226 01227 result = mgr->pool->base + mgr->used; 01228 mgr->used += needed; 01229 mgr->space -= needed; 01230 return result; 01231 }
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 1260 of file utils.c.
References __ast_string_field_index_build_va().
01263 { 01264 va_list ap1, ap2; 01265 01266 va_start(ap1, format); 01267 va_start(ap2, format); /* va_copy does not exist on FreeBSD */ 01268 01269 __ast_string_field_index_build_va(mgr, fields, num_fields, index, format, ap1, ap2); 01270 01271 va_end(ap1); 01272 va_end(ap2); 01273 }
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 1233 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().
01236 { 01237 size_t needed; 01238 01239 needed = vsnprintf(mgr->pool->base + mgr->used, mgr->space, format, ap1) + 1; 01240 01241 va_end(ap1); 01242 01243 if (needed > mgr->space) { 01244 size_t new_size = mgr->size * 2; 01245 01246 while (new_size < needed) 01247 new_size *= 2; 01248 01249 if (add_string_pool(mgr, new_size)) 01250 return; 01251 01252 vsprintf(mgr->pool->base + mgr->used, format, ap2); 01253 } 01254 01255 fields[index] = mgr->pool->base + mgr->used; 01256 mgr->used += needed; 01257 mgr->space -= needed; 01258 }
int __ast_string_field_init | ( | struct ast_string_field_mgr * | mgr, | |
size_t | size, | |||
ast_string_field * | fields, | |||
int | num_fields | |||
) |
Definition at line 1198 of file utils.c.
References add_string_pool().
01200 { 01201 int index; 01202 01203 if (add_string_pool(mgr, size)) 01204 return -1; 01205 01206 for (index = 0; index < num_fields; index++) 01207 fields[index] = __ast_string_field_empty; 01208 01209 return 0; 01210 }
static int add_string_pool | ( | struct ast_string_field_mgr * | mgr, | |
size_t | size | |||
) | [static] |
Definition at line 1182 of file utils.c.
References ast_calloc, 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_alloc_space(), __ast_string_field_index_build_va(), and __ast_string_field_init().
01183 { 01184 struct ast_string_field_pool *pool; 01185 01186 if (!(pool = ast_calloc(1, sizeof(*pool) + size))) 01187 return -1; 01188 01189 pool->prev = mgr->pool; 01190 mgr->pool = pool; 01191 mgr->size = size; 01192 mgr->space = size; 01193 mgr->used = 0; 01194 01195 return 0; 01196 }
int ast_atomic_fetchadd_int_slow | ( | volatile int * | p, | |
int | v | |||
) |
Definition at line 1277 of file utils.c.
References ast_mutex_lock(), and ast_mutex_unlock().
01278 { 01279 int ret; 01280 ast_mutex_lock(&fetchadd_m); 01281 ret = *p; 01282 *p += v; 01283 ast_mutex_unlock(&fetchadd_m); 01284 return ret; 01285 }
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 1024 of file utils.c.
References ast_build_string_va(), and result.
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(), 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().
01025 { 01026 va_list ap; 01027 int result; 01028 01029 va_start(ap, fmt); 01030 result = ast_build_string_va(buffer, space, fmt, ap); 01031 va_end(ap); 01032 01033 return result; 01034 }
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 1005 of file utils.c.
References result.
Referenced by ast_build_string().
01006 { 01007 int result; 01008 01009 if (!buffer || !*buffer || !space || !*space) 01010 return -1; 01011 01012 result = vsnprintf(*buffer, *space, fmt, ap); 01013 01014 if (result < 0) 01015 return -1; 01016 else if (result > *space) 01017 result = *space; 01018 01019 *buffer += result; 01020 *space -= result; 01021 return 0; 01022 }
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.
Try to write string, but wait no more than ms milliseconds before timing out.
Definition at line 943 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().
00944 { 00945 /* Try to write string, but wait no more than ms milliseconds 00946 before timing out */ 00947 int res = 0; 00948 struct pollfd fds[1]; 00949 while (len) { 00950 res = write(fd, s, len); 00951 if ((res < 0) && (errno != EAGAIN)) { 00952 return -1; 00953 } 00954 if (res < 0) 00955 res = 0; 00956 len -= res; 00957 s += res; 00958 res = 0; 00959 if (len) { 00960 fds[0].fd = fd; 00961 fds[0].events = POLLOUT; 00962 /* Wait until writable again */ 00963 res = poll(fds, 1, timeoutms); 00964 if (res < 1) 00965 return -1; 00966 } 00967 } 00968 return res; 00969 }
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.
In the case that this function is called and the buffer was not large enough to hold the result, the partial write will be truncated, and the result AST_DYNSTR_BUILD_RETRY will be returned to indicate that the buffer size was increased, and the function should be called a second time.
A return of AST_DYNSTR_BUILD_FAILED indicates a memory allocation error.
A return value greater than or equal to zero indicates the number of characters that have been written, not including the terminating ''. In the append case, this only includes the number of characters appended.
Definition at line 1313 of file utils.c.
References ast_realloc, ast_threadstorage::key, and offset.
01315 { 01316 int res; 01317 int offset = (append && (*buf)->len) ? strlen((*buf)->str) : 0; 01318 #if defined(DEBUG_THREADLOCALS) 01319 struct ast_dynamic_str *old_buf = *buf; 01320 #endif /* defined(DEBUG_THREADLOCALS) */ 01321 01322 res = vsnprintf((*buf)->str + offset, (*buf)->len - offset, fmt, ap); 01323 01324 /* Check to see if there was not enough space in the string buffer to prepare 01325 * the string. Also, if a maximum length is present, make sure the current 01326 * length is less than the maximum before increasing the size. */ 01327 if ((res + offset + 1) > (*buf)->len && (max_len ? ((*buf)->len < max_len) : 1)) { 01328 /* Set the new size of the string buffer to be the size needed 01329 * to hold the resulting string (res) plus one byte for the 01330 * terminating '\0'. If this size is greater than the max, set 01331 * the new length to be the maximum allowed. */ 01332 if (max_len) 01333 (*buf)->len = ((res + offset + 1) < max_len) ? (res + offset + 1) : max_len; 01334 else 01335 (*buf)->len = res + offset + 1; 01336 01337 if (!(*buf = ast_realloc(*buf, (*buf)->len + sizeof(*(*buf))))) 01338 return AST_DYNSTR_BUILD_FAILED; 01339 01340 if (append) 01341 (*buf)->str[offset] = '\0'; 01342 01343 if (ts) { 01344 pthread_setspecific(ts->key, *buf); 01345 #if defined(DEBUG_THREADLOCALS) 01346 __ast_threadstorage_object_replace(old_buf, *buf, (*buf)->len + sizeof(*(*buf))); 01347 #endif /* defined(DEBUG_THREADLOCALS) */ 01348 } 01349 01350 /* va_end() and va_start() must be done before calling 01351 * vsnprintf() again. */ 01352 return AST_DYNSTR_BUILD_RETRY; 01353 } 01354 01355 return res; 01356 }
void ast_enable_packet_fragmentation | ( | int | sock | ) |
Definition at line 1358 of file utils.c.
References ast_log(), and LOG_WARNING.
Referenced by ast_netsock_bindaddr().
01359 { 01360 #if defined(HAVE_IP_MTU_DISCOVER) 01361 int val = IP_PMTUDISC_DONT; 01362 01363 if (setsockopt(sock, IPPROTO_IP, IP_MTU_DISCOVER, &val, sizeof(val))) 01364 ast_log(LOG_WARNING, "Unable to disable PMTU discovery. Large UDP packets may fail to be delivered when sent from this socket.\n"); 01365 #endif /* HAVE_IP_MTU_DISCOVER */ 01366 }
int ast_false | ( | const char * | val | ) |
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 1053 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(), and strings_to_mask().
01054 { 01055 if (ast_strlen_zero(s)) 01056 return 0; 01057 01058 /* Determine if this is a false value */ 01059 if (!strcasecmp(s, "no") || 01060 !strcasecmp(s, "false") || 01061 !strcasecmp(s, "n") || 01062 !strcasecmp(s, "f") || 01063 !strcasecmp(s, "0") || 01064 !strcasecmp(s, "off")) 01065 return -1; 01066 01067 return 0; 01068 }
int ast_get_time_t | ( | const char * | src, | |
time_t * | dst, | |||
time_t | _default, | |||
int * | consumed | |||
) |
get values from config variables.
Definition at line 1290 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(), and sayunixtime_exec().
01291 { 01292 long t; 01293 int scanned; 01294 01295 if (dst == NULL) 01296 return -1; 01297 01298 *dst = _default; 01299 01300 if (ast_strlen_zero(src)) 01301 return -1; 01302 01303 /* only integer at the moment, but one day we could accept more formats */ 01304 if (sscanf(src, "%ld%n", &t, &scanned) == 1) { 01305 *dst = t; 01306 if (consumed) 01307 *consumed = scanned; 01308 return 0; 01309 } else 01310 return -1; 01311 }
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).
Definition at line 184 of file utils.c.
References gethostbyname_r(), hp, result, and s.
Referenced by __ast_http_load(), ast_dnsmgr_lookup(), ast_find_ourip(), ast_get_ip_or_srv(), ast_sip_ouraddrfor(), check_via(), create_addr(), dnsmgr_refresh(), festival_exec(), gtalk_load_config(), gtalk_update_stun(), iax_template_parse(), launch_netscript(), parse_register_contact(), process_sdp(), realtime_peer(), realtime_user(), reload_config(), 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 | ) |
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(), function_iaxpeer(), function_sipchaninfo_read(), function_sippeer(), 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(), 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 1161 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().
01162 { 01163 int x, ofs = 0; 01164 const char *src; 01165 01166 /* Join words into a string */ 01167 if (!s) 01168 return; 01169 for (x = 0; ofs < len && w[x]; x++) { 01170 if (x > 0) 01171 s[ofs++] = ' '; 01172 for (src = w[x]; *src && ofs < len; src++) 01173 s[ofs++] = *src; 01174 } 01175 if (ofs == len) 01176 ofs--; 01177 s[ofs] = '\0'; 01178 }
void ast_md5_hash | ( | char * | output, | |
char * | input | |||
) |
Produce 32 char MD5 hash of value.
Definition at line 294 of file utils.c.
References md5(), 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 1135 of file utils.c.
Referenced by handle_context_add_extension(), handle_context_add_extension_deprecated(), and pbx_load_config().
01136 { 01137 char *dataPut = start; 01138 int inEscape = 0; 01139 int inQuotes = 0; 01140 01141 for (; *start; start++) { 01142 if (inEscape) { 01143 *dataPut++ = *start; /* Always goes verbatim */ 01144 inEscape = 0; 01145 } else { 01146 if (*start == '\\') { 01147 inEscape = 1; /* Do not copy \ into the data */ 01148 } else if (*start == '\'') { 01149 inQuotes = 1 - inQuotes; /* Do not copy ' into the data */ 01150 } else { 01151 /* Replace , with |, unless in quotes */ 01152 *dataPut++ = inQuotes ? *start : ((*start == find) ? replace_with : *start); 01153 } 01154 } 01155 } 01156 if (start != dataPut) 01157 *dataPut = 0; 01158 return dataPut; 01159 }
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 874 of file utils.c.
References asprintf, ast_log(), ast_malloc, AST_STACKSIZE, dummy_start(), errno, LOG_WARNING, and pthread_create.
00877 { 00878 #if !defined(LOW_MEMORY) 00879 struct thr_arg *a; 00880 #endif 00881 00882 if (!attr) { 00883 attr = alloca(sizeof(*attr)); 00884 pthread_attr_init(attr); 00885 } 00886 00887 #ifdef __linux__ 00888 /* On Linux, pthread_attr_init() defaults to PTHREAD_EXPLICIT_SCHED, 00889 which is kind of useless. Change this here to 00890 PTHREAD_INHERIT_SCHED; that way the -p option to set realtime 00891 priority will propagate down to new threads by default. 00892 This does mean that callers cannot set a different priority using 00893 PTHREAD_EXPLICIT_SCHED in the attr argument; instead they must set 00894 the priority afterwards with pthread_setschedparam(). */ 00895 if ((errno = pthread_attr_setinheritsched(attr, PTHREAD_INHERIT_SCHED))) 00896 ast_log(LOG_WARNING, "pthread_attr_setinheritsched: %s\n", strerror(errno)); 00897 #endif 00898 00899 if (!stacksize) 00900 stacksize = AST_STACKSIZE; 00901 00902 if ((errno = pthread_attr_setstacksize(attr, stacksize ? stacksize : AST_STACKSIZE))) 00903 ast_log(LOG_WARNING, "pthread_attr_setstacksize: %s\n", strerror(errno)); 00904 00905 #if !defined(LOW_MEMORY) 00906 if ((a = ast_malloc(sizeof(*a)))) { 00907 a->start_routine = start_routine; 00908 a->data = data; 00909 start_routine = dummy_start; 00910 asprintf(&a->name, "%-20s started at [%5d] %s %s()", 00911 start_fn, line, file, caller); 00912 data = a; 00913 } 00914 #endif /* !LOW_MEMORY */ 00915 00916 return pthread_create(thread, attr, start_routine, data); /* We're in ast_pthread_create, so it's okay */ 00917 }
long int ast_random | ( | void | ) |
Definition at line 1125 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_source(), 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().
01126 { 01127 long int res; 01128 ast_mutex_lock(&randomlock); 01129 res = random(); 01130 ast_mutex_unlock(&randomlock); 01131 return res; 01132 }
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 971 of file utils.c.
Referenced by ast_register_file_version(), iftime(), and parse_dial_string().
00972 { 00973 char *e; 00974 char *q; 00975 00976 s = ast_strip(s); 00977 if ((q = strchr(beg_quotes, *s)) && *q != '\0') { 00978 e = s + strlen(s) - 1; 00979 if (*e == *(end_quotes + (q - beg_quotes))) { 00980 s++; 00981 *e = '\0'; 00982 } 00983 } 00984 00985 return s; 00986 }
AST_THREADSTORAGE | ( | inet_ntoa_buf | , | |
inet_ntoa_buf_init | ||||
) |
int ast_true | ( | const char * | val | ) |
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 1036 of file utils.c.
References ast_strlen_zero().
Referenced by __ast_http_load(), __login_exec(), _parse(), action_agent_callback_login(), action_agent_logoff(), action_bridge(), action_originate(), action_setcdruserfield(), action_updateconfig(), aji_create_client(), aji_load_config(), apply_option(), apply_outgoing(), ast_jb_read_conf(), 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(), start_monitor_action(), strings_to_mask(), and update_common_options().
01037 { 01038 if (ast_strlen_zero(s)) 01039 return 0; 01040 01041 /* Determine if this is a true value */ 01042 if (!strcasecmp(s, "yes") || 01043 !strcasecmp(s, "true") || 01044 !strcasecmp(s, "y") || 01045 !strcasecmp(s, "t") || 01046 !strcasecmp(s, "1") || 01047 !strcasecmp(s, "on")) 01048 return -1; 01049 01050 return 0; 01051 }
struct timeval ast_tvadd | ( | struct timeval | a, | |
struct timeval | b | |||
) |
Definition at line 1090 of file utils.c.
References ONE_MILLION, and tvfix().
Referenced by __get_from_jb(), agent_hangup(), agent_read(), ast_audiohook_trigger_wait(), ast_channel_bridge(), 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(), mwi_monitor_handler(), NBScat_exec(), sched_settime(), sched_thread(), schedule_delivery(), sla_process_timers(), and smdi_message_wait().
01091 { 01092 /* consistency checks to guarantee usec in 0..999999 */ 01093 a = tvfix(a); 01094 b = tvfix(b); 01095 a.tv_sec += b.tv_sec; 01096 a.tv_usec += b.tv_usec; 01097 if (a.tv_usec >= ONE_MILLION) { 01098 a.tv_sec++; 01099 a.tv_usec -= ONE_MILLION; 01100 } 01101 return a; 01102 }
struct timeval ast_tvsub | ( | struct timeval | a, | |
struct timeval | b | |||
) |
Returns the difference of two timevals a - b.
Definition at line 1104 of file utils.c.
References ONE_MILLION, and tvfix().
Referenced by ast_channel_bridge(), ast_sched_dump(), ast_translate(), calc_rxstamp(), and calc_timestamp().
01105 { 01106 /* consistency checks to guarantee usec in 0..999999 */ 01107 a = tvfix(a); 01108 b = tvfix(b); 01109 a.tv_sec -= b.tv_sec; 01110 a.tv_usec -= b.tv_usec; 01111 if (a.tv_usec < 0) { 01112 a.tv_sec-- ; 01113 a.tv_usec += ONE_MILLION; 01114 } 01115 return a; 01116 }
char* ast_unescape_semicolon | ( | char * | s | ) |
Strip backslash for "escaped" semicolons. s The string to be stripped (will be modified).
Definition at line 988 of file utils.c.
Referenced by sip_notify().
00989 { 00990 char *e; 00991 char *work = s; 00992 00993 while ((e = strchr(work, ';'))) { 00994 if ((e > work) && (*(e-1) == '\\')) { 00995 memmove(e - 1, e, strlen(e) + 1); 00996 work = e; 00997 } else { 00998 work = e + 1; 00999 } 01000 } 01001 01002 return s; 01003 }
void ast_uri_decode | ( | char * | s | ) |
Decode URI, URN, URL (overwrite string).
s | String to be decoded |
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 | |||
) |
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 1368 of file utils.c.
References ast_cli_register_multiple(), and base64_init().
Referenced by main().
01369 { 01370 base64_init(); 01371 #ifdef DEBUG_THREADS 01372 ast_cli_register_multiple(utils_cli, sizeof(utils_cli) / sizeof(utils_cli[0])); 01373 #endif 01374 return 0; 01375 }
int ast_wait_for_input | ( | int | fd, | |
int | ms | |||
) |
Definition at line 919 of file utils.c.
References poll(), POLLIN, and POLLPRI.
Referenced by action_waitevent(), ast_moh_destroy_one(), and http_root().
00920 { 00921 struct pollfd pfd[1]; 00922 memset(pfd, 0, sizeof(pfd)); 00923 pfd[0].fd = fd; 00924 pfd[0].events = POLLIN|POLLPRI; 00925 return poll(pfd, 1, ms); 00926 }
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 830 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().
00831 { 00832 void *ret; 00833 struct thr_arg a = *((struct thr_arg *) data); /* make a local copy */ 00834 #ifdef DEBUG_THREADS 00835 struct thr_lock_info *lock_info; 00836 pthread_mutexattr_t mutex_attr; 00837 #endif 00838 00839 /* note that even though data->name is a pointer to allocated memory, 00840 we are not freeing it here because ast_register_thread is going to 00841 keep a copy of the pointer and then ast_unregister_thread will 00842 free the memory 00843 */ 00844 free(data); 00845 ast_register_thread(a.name); 00846 pthread_cleanup_push(ast_unregister_thread, (void *) pthread_self()); 00847 00848 #ifdef DEBUG_THREADS 00849 if (!(lock_info = ast_threadstorage_get(&thread_lock_info, sizeof(*lock_info)))) 00850 return NULL; 00851 00852 lock_info->thread_id = pthread_self(); 00853 lock_info->thread_name = strdup(a.name); 00854 00855 pthread_mutexattr_init(&mutex_attr); 00856 pthread_mutexattr_settype(&mutex_attr, AST_MUTEX_KIND); 00857 pthread_mutex_init(&lock_info->lock, &mutex_attr); 00858 pthread_mutexattr_destroy(&mutex_attr); 00859 00860 pthread_mutex_lock(&lock_infos_lock.mutex); /* Intentionally not the wrapper */ 00861 AST_LIST_INSERT_TAIL(&lock_infos, lock_info, entry); 00862 pthread_mutex_unlock(&lock_infos_lock.mutex); /* Intentionally not the wrapper */ 00863 #endif /* DEBUG_THREADS */ 00864 00865 ret = a.start_routine(a.data); 00866 00867 pthread_cleanup_pop(1); 00868 00869 return ret; 00870 }
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] |
Definition at line 1075 of file utils.c.
References ast_log(), LOG_WARNING, and ONE_MILLION.
Referenced by ast_tvadd(), and ast_tvsub().
01076 { 01077 if (a.tv_usec >= ONE_MILLION) { 01078 ast_log(LOG_WARNING, "warning too large timestamp %ld.%ld\n", 01079 a.tv_sec, (long int) a.tv_usec); 01080 a.tv_sec += a.tv_usec / ONE_MILLION; 01081 a.tv_usec %= ONE_MILLION; 01082 } else if (a.tv_usec < 0) { 01083 ast_log(LOG_WARNING, "warning negative timestamp %ld.%ld\n", 01084 a.tv_sec, (long int) a.tv_usec); 01085 a.tv_usec = 0; 01086 } 01087 return a; 01088 }
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] |