add an updated patch that adds dnsmgr support for outgoing iax2 registrations
(issue #6305, by ivanfm, with mods) git-svn-id: http://svn.digium.com/svn/asterisk/trunk@32817 f38db490-d61c-443f-a65b-d21fe96a405b
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745248fa58
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d655fb8033
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@ -416,6 +416,7 @@ struct iax2_registry {
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int callno; /*!< Associated call number if applicable */
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struct sockaddr_in us; /*!< Who the server thinks we are */
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struct iax2_registry *next;
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struct ast_dnsmgr_entry *dnsmgr; /*!< DNS refresh manager */
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};
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static struct iax2_registry *registrations;
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@ -4304,8 +4305,8 @@ static char *regstate2str(int regstate)
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static int iax2_show_registry(int fd, int argc, char *argv[])
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{
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#define FORMAT2 "%-20.20s %-10.10s %-20.20s %8.8s %s\n"
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#define FORMAT "%-20.20s %-10.10s %-20.20s %8d %s\n"
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#define FORMAT2 "%-20.20s %-6.6s %-10.10s %-20.20s %8.8s %s\n"
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#define FORMAT "%-20.20s %-6.6s %-10.10s %-20.20s %8d %s\n"
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struct iax2_registry *reg = NULL;
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char host[80];
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@ -4314,7 +4315,7 @@ static int iax2_show_registry(int fd, int argc, char *argv[])
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if (argc != 3)
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return RESULT_SHOWUSAGE;
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AST_LIST_LOCK(&peers);
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ast_cli(fd, FORMAT2, "Host", "Username", "Perceived", "Refresh", "State");
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ast_cli(fd, FORMAT2, "Host", "dnsmgr", "Username", "Perceived", "Refresh", "State");
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for (reg = registrations;reg;reg = reg->next) {
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snprintf(host, sizeof(host), "%s:%d", ast_inet_ntoa(iabuf, sizeof(iabuf), reg->addr.sin_addr), ntohs(reg->addr.sin_port));
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if (reg->us.sin_addr.s_addr)
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@ -4322,6 +4323,7 @@ static int iax2_show_registry(int fd, int argc, char *argv[])
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else
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ast_copy_string(perceived, "<Unregistered>", sizeof(perceived));
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ast_cli(fd, FORMAT, host,
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(reg->dnsmgr) ? "Y" : "N",
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reg->username, perceived, reg->refresh, regstate2str(reg->regstate));
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}
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AST_LIST_UNLOCK(&peers);
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@ -5447,7 +5449,6 @@ static int iax2_register(char *value, int lineno)
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char *porta;
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char *stringp=NULL;
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struct ast_hostent ahp; struct hostent *hp;
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if (!value)
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return -1;
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ast_copy_string(copy, value, sizeof(copy));
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@ -5469,20 +5470,18 @@ static int iax2_register(char *value, int lineno)
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ast_log(LOG_WARNING, "%s is not a valid port number at line %d\n", porta, lineno);
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return -1;
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}
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hp = ast_gethostbyname(hostname, &ahp);
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if (!hp) {
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ast_log(LOG_WARNING, "Host '%s' not found at line %d\n", hostname, lineno);
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return -1;
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}
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if (!(reg = ast_calloc(1, sizeof(*reg))))
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return -1;
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if (ast_dnsmgr_lookup(hostname, ®->addr.sin_addr, ®->dnsmgr) < 0) {
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free(reg);
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return -1;
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}
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ast_copy_string(reg->username, username, sizeof(reg->username));
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if (secret)
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ast_copy_string(reg->secret, secret, sizeof(reg->secret));
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reg->expire = -1;
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reg->refresh = IAX_DEFAULT_REG_EXPIRE;
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reg->addr.sin_family = AF_INET;
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memcpy(®->addr.sin_addr, hp->h_addr, sizeof(®->addr.sin_addr));
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reg->addr.sin_port = porta ? htons(atoi(porta)) : htons(IAX_DEFAULT_PORTNO);
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reg->next = registrations;
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reg->callno = 0;
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@ -7759,6 +7758,31 @@ static int iax2_do_register(struct iax2_registry *reg)
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struct iax_ie_data ied;
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if (option_debug && iaxdebug)
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ast_log(LOG_DEBUG, "Sending registration request for '%s'\n", reg->username);
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if (reg->dnsmgr &&
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((reg->regstate == REG_STATE_TIMEOUT) || !reg->addr.sin_addr.s_addr)) {
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/* Maybe the IP has changed, force DNS refresh */
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ast_dnsmgr_refresh(reg->dnsmgr);
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}
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/*
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* if IP has Changed, free allocated call to create a new one with new IP
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* call has the pointer to IP and must be updated to the new one
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*/
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if (reg->dnsmgr && ast_dnsmgr_changed(reg->dnsmgr) && (reg->callno > 0)) {
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iax2_destroy(reg->callno);
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reg->callno = 0;
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}
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if (!reg->addr.sin_addr.s_addr) {
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if (option_debug && iaxdebug)
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ast_log(LOG_DEBUG, "Unable to send registration request for '%s' without IP address\n", reg->username);
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/* Setup the next registration attempt */
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if (reg->expire > -1)
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ast_sched_del(sched, reg->expire);
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reg->expire = ast_sched_add(sched, (5 * reg->refresh / 6) * 1000, iax2_do_register_s, reg);
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return -1;
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}
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if (!reg->callno) {
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if (option_debug)
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ast_log(LOG_DEBUG, "Allocate call number\n");
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@ -8651,6 +8675,8 @@ static void delete_users(void)
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}
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ast_mutex_unlock(&iaxsl[regl->callno]);
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}
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if (regl->dnsmgr)
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ast_dnsmgr_release(regl->dnsmgr);
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free(regl);
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}
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registrations = NULL;
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82
dnsmgr.c
82
dnsmgr.c
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@ -53,8 +53,15 @@ static int refresh_sched = -1;
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static pthread_t refresh_thread = AST_PTHREADT_NULL;
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struct ast_dnsmgr_entry {
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/*! where we will store the resulting address */
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struct in_addr *result;
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/*! the last result, used to check if address has changed */
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struct in_addr last;
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/*! Set to 1 if the entry changes */
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int changed:1;
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ast_mutex_t lock;
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AST_LIST_ENTRY(ast_dnsmgr_entry) list;
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/*! just 1 here, but we use calloc to allocate the correct size */
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char name[1];
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};
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@ -87,6 +94,7 @@ struct ast_dnsmgr_entry *ast_dnsmgr_get(const char *name, struct in_addr *result
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return NULL;
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entry->result = result;
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ast_mutex_init(&entry->lock);
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strcpy(entry->name, name);
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AST_LIST_LOCK(&entry_list);
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@ -104,6 +112,10 @@ void ast_dnsmgr_release(struct ast_dnsmgr_entry *entry)
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AST_LIST_LOCK(&entry_list);
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AST_LIST_REMOVE(&entry_list, entry, list);
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AST_LIST_UNLOCK(&entry_list);
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if (option_verbose > 3)
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ast_verbose(VERBOSE_PREFIX_4 "removing dns manager for '%s'\n", entry->name);
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ast_mutex_destroy(&entry->lock);
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free(entry);
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}
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@ -116,7 +128,7 @@ int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmg
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return 0;
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if (option_verbose > 3)
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ast_verbose(VERBOSE_PREFIX_3 "doing lookup for '%s'\n", name);
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ast_verbose(VERBOSE_PREFIX_4 "doing dnsmgr_lookup for '%s'\n", name);
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/* if it's actually an IP address and not a name,
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there's no need for a managed lookup */
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@ -134,12 +146,68 @@ int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmg
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return 0;
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} else {
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if (option_verbose > 2)
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ast_verbose(VERBOSE_PREFIX_2 "adding manager for '%s'\n", name);
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ast_verbose(VERBOSE_PREFIX_2 "adding dns manager for '%s'\n", name);
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*dnsmgr = ast_dnsmgr_get(name, result);
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return !*dnsmgr;
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}
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}
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/*
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* Refresh a dnsmgr entry
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*/
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static int dnsmgr_refresh(struct ast_dnsmgr_entry *entry, int verbose)
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{
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struct ast_hostent ahp;
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struct hostent *hp;
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char iabuf[INET_ADDRSTRLEN];
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char iabuf2[INET_ADDRSTRLEN];
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struct in_addr tmp;
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int changed = 0;
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ast_mutex_lock(&entry->lock);
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if (verbose && (option_verbose > 2))
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ast_verbose(VERBOSE_PREFIX_2 "refreshing '%s'\n", entry->name);
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if ((hp = ast_gethostbyname(entry->name, &ahp))) {
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/* check to see if it has changed, do callback if requested (where de callback is defined ????) */
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memcpy(&tmp, hp->h_addr, sizeof(tmp));
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if (tmp.s_addr != entry->last.s_addr) {
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ast_log(LOG_NOTICE, "host '%s' changed from %s to %s\n",
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entry->name,
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ast_inet_ntoa(iabuf, sizeof(iabuf), entry->last),
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ast_inet_ntoa(iabuf2, sizeof(iabuf2), tmp));
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memcpy(entry->result, hp->h_addr, sizeof(entry->result));
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memcpy(&entry->last, hp->h_addr, sizeof(entry->last));
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changed = entry->changed = 1;
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}
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}
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ast_mutex_unlock(&entry->lock);
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return changed;
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}
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int ast_dnsmgr_refresh(struct ast_dnsmgr_entry *entry)
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{
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return dnsmgr_refresh(entry, 0);
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}
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/*
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* Check if dnsmgr entry has changed from since last call to this function
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*/
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int ast_dnsmgr_changed(struct ast_dnsmgr_entry *entry)
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{
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int changed;
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ast_mutex_lock(&entry->lock);
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changed = entry->changed;
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entry->changed = 0;
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ast_mutex_unlock(&entry->lock);
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return changed;
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}
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static void *do_refresh(void *data)
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{
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for (;;) {
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@ -155,8 +223,6 @@ static int refresh_list(void *data)
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{
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struct refresh_info *info = data;
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struct ast_dnsmgr_entry *entry;
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struct ast_hostent ahp;
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struct hostent *hp;
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/* if a refresh or reload is already in progress, exit now */
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if (ast_mutex_trylock(&refresh_lock)) {
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@ -172,13 +238,7 @@ static int refresh_list(void *data)
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if (info->regex_present && regexec(&info->filter, entry->name, 0, NULL, 0))
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continue;
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if (info->verbose && (option_verbose > 2))
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ast_verbose(VERBOSE_PREFIX_2 "refreshing '%s'\n", entry->name);
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if ((hp = ast_gethostbyname(entry->name, &ahp))) {
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/* check to see if it has changed, do callback if requested */
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memcpy(entry->result, hp->h_addr, sizeof(entry->result));
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}
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dnsmgr_refresh(entry, info->verbose);
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}
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AST_LIST_UNLOCK(info->entries);
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@ -37,6 +37,24 @@ void ast_dnsmgr_release(struct ast_dnsmgr_entry *entry);
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int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmgr_entry **dnsmgr);
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/*!
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* \brief Force a refresh of a dnsmgr entry
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*
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* \retval non-zero if the result is different than the previous result
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* \retval zero if the result is the same as the previous result
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*/
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int ast_dnsmgr_refresh(struct ast_dnsmgr_entry *entry);
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/*!
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* \brief Check is see if a dnsmgr entry has changed
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*
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* \retval non-zero if the dnsmgr entry has changed since the last call to
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* this function
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* \retval zero if the dnsmgr entry has not changed since the last call to
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* this function
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*/
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int ast_dnsmgr_changed(struct ast_dnsmgr_entry *entry);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif /* c_plusplus */
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