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add an updated patch that adds dnsmgr support for outgoing iax2 registrations

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(issue #6305, by ivanfm, with mods)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@32817 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2006-06-07 17:44:36 +00:00
parent 503f99e2e8
commit 39bcaa0773
3 changed files with 125 additions and 21 deletions
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82
dnsmgr.c
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@@ -53,8 +53,15 @@ static int refresh_sched = -1;
static pthread_t refresh_thread = AST_PTHREADT_NULL;
struct ast_dnsmgr_entry {
/*! where we will store the resulting address */
struct in_addr *result;
/*! the last result, used to check if address has changed */
struct in_addr last;
/*! Set to 1 if the entry changes */
int changed:1;
ast_mutex_t lock;
AST_LIST_ENTRY(ast_dnsmgr_entry) list;
/*! just 1 here, but we use calloc to allocate the correct size */
char name[1];
};
@@ -87,6 +94,7 @@ struct ast_dnsmgr_entry *ast_dnsmgr_get(const char *name, struct in_addr *result
return NULL;
entry->result = result;
ast_mutex_init(&entry->lock);
strcpy(entry->name, name);
AST_LIST_LOCK(&entry_list);
@@ -104,6 +112,10 @@ void ast_dnsmgr_release(struct ast_dnsmgr_entry *entry)
AST_LIST_LOCK(&entry_list);
AST_LIST_REMOVE(&entry_list, entry, list);
AST_LIST_UNLOCK(&entry_list);
if (option_verbose > 3)
ast_verbose(VERBOSE_PREFIX_4 "removing dns manager for '%s'\n", entry->name);
ast_mutex_destroy(&entry->lock);
free(entry);
}
@@ -116,7 +128,7 @@ int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmg
return 0;
if (option_verbose > 3)
ast_verbose(VERBOSE_PREFIX_3 "doing lookup for '%s'\n", name);
ast_verbose(VERBOSE_PREFIX_4 "doing dnsmgr_lookup for '%s'\n", name);
/* if it's actually an IP address and not a name,
there's no need for a managed lookup */
@@ -134,12 +146,68 @@ int ast_dnsmgr_lookup(const char *name, struct in_addr *result, struct ast_dnsmg
return 0;
} else {
if (option_verbose > 2)
ast_verbose(VERBOSE_PREFIX_2 "adding manager for '%s'\n", name);
ast_verbose(VERBOSE_PREFIX_2 "adding dns manager for '%s'\n", name);
*dnsmgr = ast_dnsmgr_get(name, result);
return !*dnsmgr;
}
}
/*
* Refresh a dnsmgr entry
*/
static int dnsmgr_refresh(struct ast_dnsmgr_entry *entry, int verbose)
{
struct ast_hostent ahp;
struct hostent *hp;
char iabuf[INET_ADDRSTRLEN];
char iabuf2[INET_ADDRSTRLEN];
struct in_addr tmp;
int changed = 0;
ast_mutex_lock(&entry->lock);
if (verbose && (option_verbose > 2))
ast_verbose(VERBOSE_PREFIX_2 "refreshing '%s'\n", entry->name);
if ((hp = ast_gethostbyname(entry->name, &ahp))) {
/* check to see if it has changed, do callback if requested (where de callback is defined ????) */
memcpy(&tmp, hp->h_addr, sizeof(tmp));
if (tmp.s_addr != entry->last.s_addr) {
ast_log(LOG_NOTICE, "host '%s' changed from %s to %s\n",
entry->name,
ast_inet_ntoa(iabuf, sizeof(iabuf), entry->last),
ast_inet_ntoa(iabuf2, sizeof(iabuf2), tmp));
memcpy(entry->result, hp->h_addr, sizeof(entry->result));
memcpy(&entry->last, hp->h_addr, sizeof(entry->last));
changed = entry->changed = 1;
}
}
ast_mutex_unlock(&entry->lock);
return changed;
}
int ast_dnsmgr_refresh(struct ast_dnsmgr_entry *entry)
{
return dnsmgr_refresh(entry, 0);
}
/*
* Check if dnsmgr entry has changed from since last call to this function
*/
int ast_dnsmgr_changed(struct ast_dnsmgr_entry *entry)
{
int changed;
ast_mutex_lock(&entry->lock);
changed = entry->changed;
entry->changed = 0;
ast_mutex_unlock(&entry->lock);
return changed;
}
static void *do_refresh(void *data)
{
for (;;) {
@@ -155,8 +223,6 @@ static int refresh_list(void *data)
{
struct refresh_info *info = data;
struct ast_dnsmgr_entry *entry;
struct ast_hostent ahp;
struct hostent *hp;
/* if a refresh or reload is already in progress, exit now */
if (ast_mutex_trylock(&refresh_lock)) {
@@ -172,13 +238,7 @@ static int refresh_list(void *data)
if (info->regex_present && regexec(&info->filter, entry->name, 0, NULL, 0))
continue;
if (info->verbose && (option_verbose > 2))
ast_verbose(VERBOSE_PREFIX_2 "refreshing '%s'\n", entry->name);
if ((hp = ast_gethostbyname(entry->name, &ahp))) {
/* check to see if it has changed, do callback if requested */
memcpy(entry->result, hp->h_addr, sizeof(entry->result));
}
dnsmgr_refresh(entry, info->verbose);
}
AST_LIST_UNLOCK(info->entries);