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Fix memory leaks and report "host is not found" correctly.

This commit is contained in:
Jan Vidar Krey 2012-10-25 04:13:05 +02:00
parent d106ecdc65
commit 38b19f633d
1 changed files with 58 additions and 36 deletions
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94
src/network/dnsresolver.c
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@ -19,9 +19,6 @@
#include "uhub.h"
// #define DEBUG_LOOKUP_TIME 1
#define MAX_CONCURRENT_JOBS 25
static struct net_dns_job* find_and_remove_job(struct net_dns_job* job);
static struct net_dns_result* find_and_remove_result(struct net_dns_job* job);
@ -56,6 +53,22 @@ static void free_job(struct net_dns_job* job)
}
}
static void shutdown_free_jobs(void* ptr)
{
struct net_dns_job* job = (struct net_dns_job*) ptr;
uhub_thread_cancel(job->thread_handle);
uhub_thread_join(job->thread_handle);
free_job(job);
}
static void shutdown_free_results(void* ptr)
{
struct net_dns_result* result = (struct net_dns_result*) ptr;
uhub_thread_join(result->job->thread_handle);
net_dns_result_free(result);
}
// NOTE: Any job manipulating the members of this
// struct must lock the mutex!
struct net_dns_subsystem
@ -79,19 +92,21 @@ void net_dns_initialize()
void net_dns_destroy()
{
struct net_dns_job* job;
struct net_dns_result* result;
uhub_mutex_lock(&g_dns->mutex);
LOG_TRACE("net_dns_destroy(): jobs=%d", (int) list_size(g_dns->jobs));
job = (struct net_dns_job*) list_get_first(g_dns->jobs);
list_clear(g_dns->jobs, &shutdown_free_jobs);
LOG_TRACE("net_dns_destroy(): results=%d", (int) list_size(g_dns->results));
list_clear(g_dns->results, &shutdown_free_results);
uhub_mutex_unlock(&g_dns->mutex);
while (job)
{
net_dns_job_cancel(job);
uhub_mutex_lock(&g_dns->mutex);
job = (struct net_dns_job*) list_get_first(g_dns->jobs);
uhub_mutex_unlock(&g_dns->mutex);
}
list_destroy(g_dns->jobs);
list_destroy(g_dns->results);
uhub_mutex_destroy(&g_dns->mutex);
hub_free(g_dns);
g_dns = NULL;
}
static void dummy_free(void* ptr)
@ -149,9 +164,9 @@ static void* job_thread_resolve_name(void* ptr)
hints.ai_protocol = IPPROTO_TCP;
ret = getaddrinfo(job->host, NULL, &hints, &result);
if (ret != 0)
if (ret != 0 && ret != EAI_NONAME)
{
LOG_WARN("getaddrinfo() failed: %s", gai_strerror(ret));
LOG_TRACE("getaddrinfo() failed: %s", gai_strerror(ret));
return NULL;
}
@ -159,32 +174,39 @@ static void* job_thread_resolve_name(void* ptr)
dns_results->addr_list = list_create();
dns_results->job = job;
for (it = result; it; it = it->ai_next)
if (ret != EAI_NONAME)
{
struct ip_addr_encap* ipaddr = hub_malloc_zero(sizeof(struct ip_addr_encap));
ipaddr->af = it->ai_family;
for (it = result; it; it = it->ai_next)
{
struct ip_addr_encap* ipaddr = hub_malloc_zero(sizeof(struct ip_addr_encap));
ipaddr->af = it->ai_family;
if (it->ai_family == AF_INET)
{
struct sockaddr_in* addr4 = (struct sockaddr_in*) it->ai_addr;
memcpy(&ipaddr->internal_ip_data.in, &addr4->sin_addr, sizeof(struct in_addr));
}
else if (it->ai_family == AF_INET6)
{
struct sockaddr_in6* addr6 = (struct sockaddr_in6*) it->ai_addr;
memcpy(&ipaddr->internal_ip_data.in6, &addr6->sin6_addr, sizeof(struct in6_addr));
}
else
{
LOG_WARN("getaddrinfo() returned result with unknown address family: %d", it->ai_family);
hub_free(ipaddr);
continue;
}
if (it->ai_family == AF_INET)
{
struct sockaddr_in* addr4 = (struct sockaddr_in*) it->ai_addr;
memcpy(&ipaddr->internal_ip_data.in, &addr4->sin_addr, sizeof(struct in_addr));
}
else if (it->ai_family == AF_INET6)
{
struct sockaddr_in6* addr6 = (struct sockaddr_in6*) it->ai_addr;
memcpy(&ipaddr->internal_ip_data.in6, &addr6->sin6_addr, sizeof(struct in6_addr));
}
else
{
LOG_TRACE("getaddrinfo() returned result with unknown address family: %d", it->ai_family);
hub_free(ipaddr);
continue;
}
LOG_WARN("getaddrinfo() - Address (%d): %s", ret++, ip_convert_to_string(ipaddr));
list_append(dns_results->addr_list, ipaddr);
LOG_DUMP("getaddrinfo() - Address (%d) %s for \"%s\"", ret++, ip_convert_to_string(ipaddr), job->host);
list_append(dns_results->addr_list, ipaddr);
}
freeaddrinfo(result);
}
else
{
/* hm */
}
freeaddrinfo(result);
#ifdef DEBUG_LOOKUP_TIME
gettimeofday(&job->time_finish, NULL);