mirror of
https://github.com/asterisk/asterisk.git
synced 2025-10-19 03:07:59 +00:00
merge new_loader_completion branch, including (at least):
- restructured build tree and makefiles to eliminate recursion problems - support for embedded modules - support for static builds - simpler cross-compilation support - simpler module/loader interface (no exported symbols) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40722 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
663
main/enum.c
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663
main/enum.c
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@@ -0,0 +1,663 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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||||
* Copyright (C) 1999 - 2006, Digium, Inc.
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*
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||||
* Mark Spencer <markster@digium.com>
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||||
*
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||||
* Funding provided by nic.at
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||||
*
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||||
* See http://www.asterisk.org for more information about
|
||||
* the Asterisk project. Please do not directly contact
|
||||
* any of the maintainers of this project for assistance;
|
||||
* the project provides a web site, mailing lists and IRC
|
||||
* channels for your use.
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||||
*
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||||
* This program is free software, distributed under the terms of
|
||||
* the GNU General Public License Version 2. See the LICENSE file
|
||||
* at the top of the source tree.
|
||||
*/
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||||
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||||
/*! \file
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*
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||||
* \brief ENUM Support for Asterisk
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||||
*
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* \author Mark Spencer <markster@digium.com>
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*
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* \arg Funding provided by nic.at
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*
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* \par Enum standards
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*
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* - NAPTR records: http://ietf.nri.reston.va.us/rfc/rfc2915.txt
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* - DNS SRV records: http://www.ietf.org/rfc/rfc2782.txt
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* - ENUM http://www.ietf.org/rfc/rfc3761.txt
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* - ENUM for H.323: http://www.ietf.org/rfc/rfc3762.txt
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* - ENUM SIP: http://www.ietf.org/rfc/rfc3764.txt
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||||
* - IANA ENUM Services: http://www.iana.org/assignments/enum-services
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*
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* \par Possible improvement
|
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* \todo Implement a caching mechanism for multile enum lookups
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||||
* - See http://bugs.digium.com/view.php?id=6739
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||||
*/
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||||
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#include "asterisk.h"
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|
||||
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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||||
#include <arpa/nameser.h>
|
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#if __APPLE_CC__ >= 1495
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#include <arpa/nameser_compat.h>
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#endif
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#include <resolv.h>
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#include <stdlib.h>
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#include <string.h>
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||||
#include <ctype.h>
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#include <regex.h>
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#include <unistd.h>
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#include <errno.h>
|
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|
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#include "asterisk/logger.h"
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#include "asterisk/options.h"
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#include "asterisk/enum.h"
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#include "asterisk/dns.h"
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#include "asterisk/channel.h"
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#include "asterisk/config.h"
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#include "asterisk/utils.h"
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|
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#ifdef __APPLE__
|
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#undef T_NAPTR
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#define T_NAPTR 35
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#endif
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|
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#ifdef __APPLE__
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#undef T_TXT
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#define T_TXT 16
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#endif
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|
||||
#define TOPLEV "e164.arpa." /*!< The IETF Enum standard root, managed by the ITU */
|
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|
||||
/* Linked list from config file */
|
||||
static struct enum_search {
|
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char toplev[512];
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struct enum_search *next;
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} *toplevs;
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|
||||
static int enumver = 0;
|
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|
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AST_MUTEX_DEFINE_STATIC(enumlock);
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|
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struct naptr {
|
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unsigned short order;
|
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unsigned short pref;
|
||||
} __attribute__ ((__packed__));
|
||||
|
||||
/*! \brief Parse NAPTR record information elements */
|
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static unsigned int parse_ie(char *data, unsigned int maxdatalen, unsigned char *src, unsigned int srclen)
|
||||
{
|
||||
unsigned int len, olen;
|
||||
|
||||
len = olen = (unsigned int) src[0];
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||||
src++;
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srclen--;
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||||
|
||||
if (len > srclen) {
|
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ast_log(LOG_WARNING, "ENUM parsing failed: Wanted %d characters, got %d\n", len, srclen);
|
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return -1;
|
||||
}
|
||||
|
||||
if (len > maxdatalen)
|
||||
len = maxdatalen;
|
||||
memcpy(data, src, len);
|
||||
|
||||
return olen + 1;
|
||||
}
|
||||
|
||||
/*! \brief Parse DNS NAPTR record used in ENUM ---*/
|
||||
static int parse_naptr(char *dst, int dstsize, char *tech, int techsize, unsigned char *answer, int len, char *naptrinput)
|
||||
{
|
||||
char tech_return[80];
|
||||
unsigned char *oanswer = answer;
|
||||
char flags[512] = "";
|
||||
char services[512] = "";
|
||||
char *p;
|
||||
char regexp[512] = "";
|
||||
char repl[512] = "";
|
||||
char temp[512] = "";
|
||||
char delim;
|
||||
char *delim2;
|
||||
char *pattern, *subst, *d;
|
||||
int res;
|
||||
int regexp_len, size, backref;
|
||||
int d_len = sizeof(temp) - 1;
|
||||
regex_t preg;
|
||||
regmatch_t pmatch[9];
|
||||
|
||||
tech_return[0] = '\0';
|
||||
|
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dst[0] = '\0';
|
||||
|
||||
if (len < sizeof(struct naptr)) {
|
||||
ast_log(LOG_WARNING, "NAPTR record length too short\n");
|
||||
return -1;
|
||||
}
|
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answer += sizeof(struct naptr);
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len -= sizeof(struct naptr);
|
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if ((res = parse_ie(flags, sizeof(flags) - 1, answer, len)) < 0) {
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||||
ast_log(LOG_WARNING, "Failed to get flags from NAPTR record\n");
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return -1;
|
||||
} else {
|
||||
answer += res;
|
||||
len -= res;
|
||||
}
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||||
if ((res = parse_ie(services, sizeof(services) - 1, answer, len)) < 0) {
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ast_log(LOG_WARNING, "Failed to get services from NAPTR record\n");
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return -1;
|
||||
} else {
|
||||
answer += res;
|
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len -= res;
|
||||
}
|
||||
if ((res = parse_ie(regexp, sizeof(regexp) - 1, answer, len)) < 0) {
|
||||
ast_log(LOG_WARNING, "Failed to get regexp from NAPTR record\n");
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||||
return -1;
|
||||
} else {
|
||||
answer += res;
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||||
len -= res;
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||||
}
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||||
|
||||
if ((res = dn_expand(oanswer, answer + len, answer, repl, sizeof(repl) - 1)) < 0) {
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||||
ast_log(LOG_WARNING, "Failed to expand hostname\n");
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||||
return -1;
|
||||
}
|
||||
|
||||
if (option_debug > 2) /* Advanced NAPTR debugging */
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ast_log(LOG_DEBUG, "NAPTR input='%s', flags='%s', services='%s', regexp='%s', repl='%s'\n",
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naptrinput, flags, services, regexp, repl);
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||||
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||||
if (tolower(flags[0]) != 'u') {
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ast_log(LOG_WARNING, "NAPTR Flag must be 'U' or 'u'.\n");
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||||
return -1;
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||||
}
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||||
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||||
p = strstr(services, "e2u+");
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if (p == NULL)
|
||||
p = strstr(services, "E2U+");
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||||
if (p){
|
||||
p = p + 4;
|
||||
if (strchr(p, ':')){
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||||
p = strchr(p, ':') + 1;
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||||
}
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||||
ast_copy_string(tech_return, p, sizeof(tech_return));
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||||
} else {
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||||
|
||||
p = strstr(services, "+e2u");
|
||||
if (p == NULL)
|
||||
p = strstr(services, "+E2U");
|
||||
if (p) {
|
||||
*p = 0;
|
||||
p = strchr(services, ':');
|
||||
if (p)
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*p = 0;
|
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ast_copy_string(tech_return, services, sizeof(tech_return));
|
||||
}
|
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}
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||||
|
||||
/* DEDBUGGING STUB
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||||
ast_copy_string(regexp, "!^\\+43(.*)$!\\1@bla.fasel!", sizeof(regexp) - 1);
|
||||
*/
|
||||
|
||||
regexp_len = strlen(regexp);
|
||||
if (regexp_len < 7) {
|
||||
ast_log(LOG_WARNING, "Regex too short to be meaningful.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
delim = regexp[0];
|
||||
delim2 = strchr(regexp + 1, delim);
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||||
if ((delim2 == NULL) || (regexp[regexp_len-1] != delim)) {
|
||||
ast_log(LOG_WARNING, "Regex delimiter error (on \"%s\").\n",regexp);
|
||||
return -1;
|
||||
}
|
||||
|
||||
pattern = regexp + 1;
|
||||
*delim2 = 0;
|
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subst = delim2 + 1;
|
||||
regexp[regexp_len-1] = 0;
|
||||
|
||||
/*
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||||
* now do the regex wizardry.
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||||
*/
|
||||
|
||||
if (regcomp(&preg, pattern, REG_EXTENDED | REG_NEWLINE)) {
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ast_log(LOG_WARNING, "NAPTR Regex compilation error (regex = \"%s\").\n",regexp);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (preg.re_nsub > 9) {
|
||||
ast_log(LOG_WARNING, "NAPTR Regex compilation error: too many subs.\n");
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||||
regfree(&preg);
|
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return -1;
|
||||
}
|
||||
|
||||
if (regexec(&preg, naptrinput, 9, pmatch, 0)) {
|
||||
ast_log(LOG_WARNING, "NAPTR Regex match failed.\n");
|
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regfree(&preg);
|
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return -1;
|
||||
}
|
||||
regfree(&preg);
|
||||
|
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d = temp;
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d_len--;
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while (*subst && (d_len > 0)) {
|
||||
if ((subst[0] == '\\') && isdigit(subst[1]) && (pmatch[subst[1]-'0'].rm_so != -1)) {
|
||||
backref = subst[1]-'0';
|
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size = pmatch[backref].rm_eo - pmatch[backref].rm_so;
|
||||
if (size > d_len) {
|
||||
ast_log(LOG_WARNING, "Not enough space during NAPTR regex substitution.\n");
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||||
return -1;
|
||||
}
|
||||
memcpy(d, naptrinput + pmatch[backref].rm_so, size);
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d += size;
|
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d_len -= size;
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||||
subst += 2;
|
||||
} else if (isprint(*subst)) {
|
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*d++ = *subst++;
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||||
d_len--;
|
||||
} else {
|
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ast_log(LOG_WARNING, "Error during regex substitution.\n");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
*d = 0;
|
||||
ast_copy_string(dst, temp, dstsize);
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dst[dstsize - 1] = '\0';
|
||||
|
||||
if (*tech != '\0'){ /* check if it is requested NAPTR */
|
||||
if (!strncasecmp(tech, "ALL", techsize)){
|
||||
return 1; /* return or count any RR */
|
||||
}
|
||||
if (!strncasecmp(tech_return, tech, sizeof(tech_return)<techsize?sizeof(tech_return):techsize)){
|
||||
ast_copy_string(tech, tech_return, techsize);
|
||||
return 1; /* we got out RR */
|
||||
} else { /* go to the next RR in the DNS answer */
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* tech was not specified, return first parsed RR */
|
||||
ast_copy_string(tech, tech_return, techsize);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* do not return requested value, just count RRs and return thei number in dst */
|
||||
#define ENUMLOOKUP_OPTIONS_COUNT 1
|
||||
|
||||
struct enum_naptr_rr {
|
||||
struct naptr naptr; /* order and preference of RR */
|
||||
char *result; /* result of naptr parsing,e.g.: tel:+5553 */
|
||||
char *tech; /* Technology (from URL scheme) */
|
||||
int sort_pos; /* sort position */
|
||||
};
|
||||
|
||||
struct enum_context {
|
||||
char *dst; /* Destination part of URL from ENUM */
|
||||
int dstlen; /* Length */
|
||||
char *tech; /* Technology (from URL scheme) */
|
||||
int techlen; /* Length */
|
||||
char *txt; /* TXT record in TXT lookup */
|
||||
int txtlen; /* Length */
|
||||
char *naptrinput; /* The number to lookup */
|
||||
int position; /* used as counter for RRs or specifies position of required RR */
|
||||
int options; /* options , see ENUMLOOKUP_OPTIONS_* defined above */
|
||||
struct enum_naptr_rr *naptr_rrs; /* array of parsed NAPTR RRs */
|
||||
int naptr_rrs_count; /* Size of array naptr_rrs */
|
||||
};
|
||||
|
||||
/*! \brief Callback for TXT record lookup */
|
||||
static int txt_callback(void *context, unsigned char *answer, int len, unsigned char *fullanswer)
|
||||
{
|
||||
struct enum_context *c = (struct enum_context *)context;
|
||||
|
||||
if (answer == NULL) {
|
||||
c->txt = NULL;
|
||||
c->txtlen = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* skip over first byte, as for some reason it's a vertical tab character */
|
||||
answer += 1;
|
||||
len -= 1;
|
||||
|
||||
/* answer is not null-terminated, but should be */
|
||||
/* this is safe to do, as answer has extra bytes on the end we can
|
||||
* safely overwrite with a null */
|
||||
answer[len] = '\0';
|
||||
/* now increment len so that len includes the null, so that we can
|
||||
* compare apples to apples */
|
||||
len +=1;
|
||||
|
||||
/* finally, copy the answer into c->txt */
|
||||
ast_copy_string(c->txt, (const char *) answer, len < c->txtlen ? len : (c->txtlen));
|
||||
|
||||
/* just to be safe, let's make sure c->txt is null terminated */
|
||||
c->txt[(c->txtlen)-1] = '\0';
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*! \brief Callback from ENUM lookup function */
|
||||
static int enum_callback(void *context, unsigned char *answer, int len, unsigned char *fullanswer)
|
||||
{
|
||||
struct enum_context *c = context;
|
||||
void *p = NULL;
|
||||
int res;
|
||||
|
||||
res = parse_naptr(c->dst, c->dstlen, c->tech, c->techlen, answer, len, c->naptrinput);
|
||||
|
||||
if (res < 0) {
|
||||
ast_log(LOG_WARNING, "Failed to parse naptr :(\n");
|
||||
return -1;
|
||||
} else if (res > 0 && !ast_strlen_zero(c->dst)){ /* ok, we got needed NAPTR */
|
||||
if (c->options & ENUMLOOKUP_OPTIONS_COUNT){ /* counting RRs */
|
||||
c->position++;
|
||||
snprintf(c->dst, c->dstlen, "%d", c->position);
|
||||
} else {
|
||||
if ((p = ast_realloc(c->naptr_rrs, sizeof(*c->naptr_rrs) * (c->naptr_rrs_count + 1)))) {
|
||||
c->naptr_rrs = p;
|
||||
memcpy(&c->naptr_rrs[c->naptr_rrs_count].naptr, answer, sizeof(c->naptr_rrs->naptr));
|
||||
c->naptr_rrs[c->naptr_rrs_count].result = strdup(c->dst);
|
||||
c->naptr_rrs[c->naptr_rrs_count].tech = strdup(c->tech);
|
||||
c->naptr_rrs[c->naptr_rrs_count].sort_pos = c->naptr_rrs_count;
|
||||
c->naptr_rrs_count++;
|
||||
}
|
||||
c->dst[0] = 0;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (c->options & ENUMLOOKUP_OPTIONS_COUNT) { /* counting RRs */
|
||||
snprintf(c->dst, c->dstlen, "%d", c->position);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*! \brief ENUM lookup */
|
||||
int ast_get_enum(struct ast_channel *chan, const char *number, char *dst, int dstlen, char *tech, int techlen, char* suffix, char* options)
|
||||
{
|
||||
struct enum_context context;
|
||||
char tmp[259 + 512];
|
||||
char naptrinput[512];
|
||||
int pos = strlen(number) - 1;
|
||||
int newpos = 0;
|
||||
int ret = -1;
|
||||
struct enum_search *s = NULL;
|
||||
int version = -1;
|
||||
/* for ISN rewrite */
|
||||
char *p1 = NULL;
|
||||
char *p2 = NULL;
|
||||
int k = 0;
|
||||
int i = 0;
|
||||
int z = 0;
|
||||
|
||||
ast_copy_string(naptrinput, number[0] == 'n' ? number+1 : number, sizeof(naptrinput));
|
||||
|
||||
context.naptrinput = naptrinput; /* The number */
|
||||
context.dst = dst; /* Return string */
|
||||
context.dstlen = dstlen;
|
||||
context.tech = tech;
|
||||
context.techlen = techlen;
|
||||
context.options = 0;
|
||||
context.position = 1;
|
||||
context.naptr_rrs = NULL;
|
||||
context.naptr_rrs_count = 0;
|
||||
|
||||
if (options != NULL) {
|
||||
if (*options == 'c') {
|
||||
context.options = ENUMLOOKUP_OPTIONS_COUNT;
|
||||
context.position = 0;
|
||||
} else {
|
||||
context.position = atoi(options);
|
||||
if (context.position < 1)
|
||||
context.position = 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (pos > 128)
|
||||
pos = 128;
|
||||
|
||||
/* ISN rewrite */
|
||||
p1 = strchr(number, '*');
|
||||
|
||||
if (number[0] == 'n') { /* do not perform ISN rewrite ('n' is testing flag) */
|
||||
p1 = NULL;
|
||||
k = 1; /* strip 'n' from number */
|
||||
}
|
||||
|
||||
if (p1 != NULL) {
|
||||
p2 = p1+1;
|
||||
while (p1 > number){
|
||||
p1--;
|
||||
tmp[newpos++] = *p1;
|
||||
tmp[newpos++] = '.';
|
||||
}
|
||||
if (*p2) {
|
||||
while(*p2 && newpos < 128){
|
||||
tmp[newpos++] = *p2;
|
||||
p2++;
|
||||
}
|
||||
tmp[newpos++] = '.';
|
||||
}
|
||||
|
||||
} else {
|
||||
while (pos >= k) {
|
||||
if (isdigit(number[pos])) {
|
||||
tmp[newpos++] = number[pos];
|
||||
tmp[newpos++] = '.';
|
||||
}
|
||||
pos--;
|
||||
}
|
||||
}
|
||||
|
||||
if (chan && ast_autoservice_start(chan) < 0)
|
||||
return -1;
|
||||
|
||||
for (;;) {
|
||||
ast_mutex_lock(&enumlock);
|
||||
if (version != enumver) {
|
||||
/* Ooh, a reload... */
|
||||
s = toplevs;
|
||||
version = enumver;
|
||||
} else {
|
||||
s = s->next;
|
||||
}
|
||||
ast_copy_string(tmp + newpos, suffix ? suffix : s->toplev, sizeof(tmp) - newpos);
|
||||
ast_mutex_unlock(&enumlock);
|
||||
if (!s)
|
||||
break;
|
||||
ret = ast_search_dns(&context, tmp, C_IN, T_NAPTR, enum_callback);
|
||||
if (ret > 0)
|
||||
break;
|
||||
if (suffix != NULL)
|
||||
break;
|
||||
}
|
||||
if (ret < 0) {
|
||||
ast_log(LOG_DEBUG, "No such number found: %s (%s)\n", tmp, strerror(errno));
|
||||
strcpy(dst, "0");
|
||||
ret = 0;
|
||||
}
|
||||
|
||||
if (context.naptr_rrs_count >= context.position && ! (context.options & ENUMLOOKUP_OPTIONS_COUNT)) {
|
||||
/* sort array by NAPTR order/preference */
|
||||
for (k = 0; k < context.naptr_rrs_count; k++) {
|
||||
for (i = 0; i < context.naptr_rrs_count; i++) {
|
||||
/* use order first and then preference to compare */
|
||||
if ((ntohs(context.naptr_rrs[k].naptr.order) < ntohs(context.naptr_rrs[i].naptr.order)
|
||||
&& context.naptr_rrs[k].sort_pos > context.naptr_rrs[i].sort_pos)
|
||||
|| (ntohs(context.naptr_rrs[k].naptr.order) > ntohs(context.naptr_rrs[i].naptr.order)
|
||||
&& context.naptr_rrs[k].sort_pos < context.naptr_rrs[i].sort_pos)){
|
||||
z = context.naptr_rrs[k].sort_pos;
|
||||
context.naptr_rrs[k].sort_pos = context.naptr_rrs[i].sort_pos;
|
||||
context.naptr_rrs[i].sort_pos = z;
|
||||
continue;
|
||||
}
|
||||
if (ntohs(context.naptr_rrs[k].naptr.order) == ntohs(context.naptr_rrs[i].naptr.order)) {
|
||||
if ((ntohs(context.naptr_rrs[k].naptr.pref) < ntohs(context.naptr_rrs[i].naptr.pref)
|
||||
&& context.naptr_rrs[k].sort_pos > context.naptr_rrs[i].sort_pos)
|
||||
|| (ntohs(context.naptr_rrs[k].naptr.pref) > ntohs(context.naptr_rrs[i].naptr.pref)
|
||||
&& context.naptr_rrs[k].sort_pos < context.naptr_rrs[i].sort_pos)){
|
||||
z = context.naptr_rrs[k].sort_pos;
|
||||
context.naptr_rrs[k].sort_pos = context.naptr_rrs[i].sort_pos;
|
||||
context.naptr_rrs[i].sort_pos = z;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
for (k = 0; k < context.naptr_rrs_count; k++) {
|
||||
if (context.naptr_rrs[k].sort_pos == context.position-1) {
|
||||
ast_copy_string(context.dst, context.naptr_rrs[k].result, dstlen);
|
||||
ast_copy_string(context.tech, context.naptr_rrs[k].tech, techlen);
|
||||
break;
|
||||
}
|
||||
}
|
||||
} else if (!(context.options & ENUMLOOKUP_OPTIONS_COUNT)) {
|
||||
context.dst[0] = 0;
|
||||
}
|
||||
if (chan)
|
||||
ret |= ast_autoservice_stop(chan);
|
||||
|
||||
for (k = 0; k < context.naptr_rrs_count; k++) {
|
||||
free(context.naptr_rrs[k].result);
|
||||
free(context.naptr_rrs[k].tech);
|
||||
}
|
||||
|
||||
free(context.naptr_rrs);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*! \brief Get TXT record from DNS.
|
||||
Really has nothing to do with enum, but anyway...
|
||||
*/
|
||||
int ast_get_txt(struct ast_channel *chan, const char *number, char *dst, int dstlen, char *tech, int techlen, char *txt, int txtlen)
|
||||
{
|
||||
struct enum_context context;
|
||||
char tmp[259 + 512];
|
||||
char naptrinput[512] = "+";
|
||||
int pos = strlen(number) - 1;
|
||||
int newpos = 0;
|
||||
int ret = -1;
|
||||
struct enum_search *s = NULL;
|
||||
int version = -1;
|
||||
|
||||
strncat(naptrinput, number, sizeof(naptrinput) - 2);
|
||||
|
||||
context.naptrinput = naptrinput;
|
||||
context.dst = dst;
|
||||
context.dstlen = dstlen;
|
||||
context.tech = tech;
|
||||
context.techlen = techlen;
|
||||
context.txt = txt;
|
||||
context.txtlen = txtlen;
|
||||
|
||||
if (pos > 128)
|
||||
pos = 128;
|
||||
while (pos >= 0) {
|
||||
tmp[newpos++] = number[pos--];
|
||||
tmp[newpos++] = '.';
|
||||
}
|
||||
|
||||
if (chan && ast_autoservice_start(chan) < 0)
|
||||
return -1;
|
||||
|
||||
for (;;) {
|
||||
ast_mutex_lock(&enumlock);
|
||||
if (version != enumver) {
|
||||
/* Ooh, a reload... */
|
||||
s = toplevs;
|
||||
version = enumver;
|
||||
} else {
|
||||
s = s->next;
|
||||
}
|
||||
if (s) {
|
||||
ast_copy_string(tmp + newpos, s->toplev, sizeof(tmp) - newpos);
|
||||
}
|
||||
ast_mutex_unlock(&enumlock);
|
||||
if (!s)
|
||||
break;
|
||||
|
||||
ret = ast_search_dns(&context, tmp, C_IN, T_TXT, txt_callback);
|
||||
if (ret > 0)
|
||||
break;
|
||||
}
|
||||
if (ret < 0) {
|
||||
if (option_debug > 1)
|
||||
ast_log(LOG_DEBUG, "No such number found in ENUM: %s (%s)\n", tmp, strerror(errno));
|
||||
ret = 0;
|
||||
}
|
||||
if (chan)
|
||||
ret |= ast_autoservice_stop(chan);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*! \brief Add enum tree to linked list */
|
||||
static struct enum_search *enum_newtoplev(char *s)
|
||||
{
|
||||
struct enum_search *tmp;
|
||||
|
||||
if ((tmp = ast_calloc(1, sizeof(*tmp)))) {
|
||||
ast_copy_string(tmp->toplev, s, sizeof(tmp->toplev));
|
||||
}
|
||||
return tmp;
|
||||
}
|
||||
|
||||
/*! \brief Initialize the ENUM support subsystem */
|
||||
int ast_enum_init(void)
|
||||
{
|
||||
struct ast_config *cfg;
|
||||
struct enum_search *s, *sl;
|
||||
struct ast_variable *v;
|
||||
|
||||
/* Destroy existing list */
|
||||
ast_mutex_lock(&enumlock);
|
||||
s = toplevs;
|
||||
while(s) {
|
||||
sl = s;
|
||||
s = s->next;
|
||||
free(sl);
|
||||
}
|
||||
toplevs = NULL;
|
||||
cfg = ast_config_load("enum.conf");
|
||||
if (cfg) {
|
||||
sl = NULL;
|
||||
v = ast_variable_browse(cfg, "general");
|
||||
while(v) {
|
||||
if (!strcasecmp(v->name, "search")) {
|
||||
s = enum_newtoplev(v->value);
|
||||
if (s) {
|
||||
if (sl)
|
||||
sl->next = s;
|
||||
else
|
||||
toplevs = s;
|
||||
sl = s;
|
||||
}
|
||||
}
|
||||
v = v->next;
|
||||
}
|
||||
ast_config_destroy(cfg);
|
||||
} else {
|
||||
toplevs = enum_newtoplev(TOPLEV);
|
||||
}
|
||||
enumver++;
|
||||
ast_mutex_unlock(&enumlock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ast_enum_reload(void)
|
||||
{
|
||||
return ast_enum_init();
|
||||
}
|
||||
Reference in New Issue
Block a user