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/*
* This file is part of telepathy-idle
*
* Copyright (C) 2006-2007 Collabora Limited
* Copyright (C) 2006-2007 Nokia Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "idle-dns-resolver.h"
#include <netdb.h>
#include <sys/socket.h>
#include <string.h>
#define IDLE_DEBUG_FLAG IDLE_DEBUG_DNS
#include "idle-debug.h"
typedef struct _IdleDNSResultReal IdleDNSResultReal;
struct _IdleDNSResultReal {
IdleDNSResult result;
struct addrinfo *addrinfo;
};
#define idle_dns_result_real_new() \
(g_slice_new(IdleDNSResultReal))
#define idle_dns_result_real_new0() \
(g_slice_new0(IdleDNSResultReal))
void idle_dns_result_destroy(IdleDNSResult *result) {
IdleDNSResultReal *real = (IdleDNSResultReal *)(result);
if (result->ai_next)
idle_dns_result_destroy(result->ai_next);
if (real->addrinfo)
freeaddrinfo(real->addrinfo);
g_slice_free(IdleDNSResult, result);
}
typedef struct _IdleDNSQueryData IdleDNSQueryData;
struct _IdleDNSQueryData {
gchar *name;
guint port;
IdleDNSResultCallback cb;
gpointer user_data;
guint source_id;
};
#define idle_dns_query_data_new() \
(g_slice_new(IdleDNSQueryData))
#define idle_dns_query_data_new0() \
(g_slice_new0(IdleDNSQueryData))
static void idle_dns_query_data_destroy(IdleDNSQueryData *data) {
g_free(data->name);
g_slice_free(IdleDNSQueryData, data);
}
struct _IdleDNSResolver {
GHashTable *queries;
guint serial;
};
IdleDNSResolver *idle_dns_resolver_new() {
IdleDNSResolver *ret = g_slice_new(IdleDNSResolver);
ret->queries = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, (GDestroyNotify)(idle_dns_query_data_destroy));
ret->serial = 0;
return ret;
}
void idle_dns_resolver_destroy(IdleDNSResolver *res) {
g_hash_table_destroy(res->queries);
g_slice_free(IdleDNSResolver, res);
}
struct _idle_helper {
IdleDNSResolver *res;
guint serial;
};
#define _idle_helper_new() \
(g_slice_new(struct _idle_helper))
#define _idle_helper_new0() \
(g_slice_new0(struct _idle_helper))
static void _idle_helper_destroy(struct _idle_helper *helper) {
g_slice_free(struct _idle_helper, helper);
}
static gboolean _resolve_idle_func(struct _idle_helper *helper) {
IdleDNSQueryData *data = g_hash_table_lookup(helper->res->queries, GUINT_TO_POINTER(helper->serial));
struct addrinfo *info = NULL;
struct addrinfo *cur;
struct addrinfo hints;
int rc;
IdleDNSResultReal *results = NULL, *tail = NULL;
IdleDNSResultCallback cb;
gpointer user_data;
gchar *service = g_strdup_printf("%u", data->port);
cb = data->cb;
user_data = data->user_data;
memset(&hints, 0, sizeof(hints));
hints.ai_socktype = SOCK_STREAM;
rc = getaddrinfo(data->name, service, &hints, &info);
if (rc) {
IDLE_DEBUG("getaddrinfo(): %s", gai_strerror(rc));
return FALSE;
}
for (cur = info; cur != NULL; cur = cur->ai_next) {
IdleDNSResultReal *real = idle_dns_result_real_new();
IdleDNSResult *result = &(real->result);
result->ai_family = cur->ai_family;
result->ai_socktype = cur->ai_socktype;
result->ai_protocol = cur->ai_protocol;
result->ai_addr = cur->ai_addr;
result->ai_addrlen = cur->ai_addrlen;
result->ai_next = NULL;
real->addrinfo = NULL;
if (tail)
tail->result.ai_next = (IdleDNSResult *)(real);
if (!results) {
results = real;
real->addrinfo = info;
}
tail = real;
}
g_hash_table_remove(helper->res->queries, GUINT_TO_POINTER(helper->serial));
cb(helper->serial, (IdleDNSResult *)(results), user_data);
g_free(service);
return FALSE;
}
guint idle_dns_resolver_query(IdleDNSResolver *res, const gchar *name, guint port, IdleDNSResultCallback cb, gpointer user_data) {
IdleDNSQueryData *data;
struct _idle_helper *helper;
guint ret;
g_assert (res != NULL);
g_assert (name != NULL);
g_assert (port != 0);
g_assert (cb != NULL);
ret = res->serial++;
helper = _idle_helper_new();
helper->res = res;
helper->serial = ret;
data = idle_dns_query_data_new();
data->name = g_strdup(name);
data->port = port;
data->cb = cb;
data->user_data = user_data;
data->source_id = g_idle_add_full(G_PRIORITY_DEFAULT_IDLE, (GSourceFunc)(_resolve_idle_func), helper, (GDestroyNotify)(_idle_helper_destroy));
g_hash_table_insert(res->queries, GUINT_TO_POINTER(ret), data);
return ret;
}
void idle_dns_resolver_cancel_query(IdleDNSResolver *res, guint id) {
IdleDNSQueryData *data;
g_assert(res);
data = g_hash_table_lookup(res->queries, GUINT_TO_POINTER(id));
if (!data) {
IDLE_DEBUG("query %u not found!", id);
return;
}
g_source_remove(data->source_id);
g_hash_table_remove(res->queries, GUINT_TO_POINTER(id));
}
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