74 lines
1.9 KiB
Diff
74 lines
1.9 KiB
Diff
From 4ee6f943ddb0d97fada7144f47780cc1d7f20f11 Mon Sep 17 00:00:00 2001
|
|
From: Juan RP <xtraeme@gmail.com>
|
|
Date: Tue, 23 Dec 2014 10:52:54 +0100
|
|
Subject: [PATCH] libfetch: fix races in the cache connection code.
|
|
|
|
Tested by @Gottox.
|
|
---
|
|
NEWS | 4 +---
|
|
lib/fetch/common.c | 9 +++++++++
|
|
lib/plist_fetch.c | 14 +-------------
|
|
3 files changed, 11 insertions(+), 16 deletions(-)
|
|
|
|
diff --git a/lib/fetch/common.c b/lib/fetch/common.c
|
|
index 1ea017b..edd8e89 100644
|
|
--- lib/fetch/common.c
|
|
+++ lib/fetch/common.c
|
|
@@ -66,6 +66,8 @@
|
|
#include <signal.h>
|
|
#endif
|
|
|
|
+#include <pthread.h>
|
|
+
|
|
#include "fetch.h"
|
|
#include "common.h"
|
|
|
|
@@ -333,6 +335,7 @@ fetch_connect(struct url *url, int af, int verbose)
|
|
return (conn);
|
|
}
|
|
|
|
+static pthread_mutex_t cache_mtx = PTHREAD_MUTEX_INITIALIZER;
|
|
static conn_t *connection_cache;
|
|
static int cache_global_limit = 0;
|
|
static int cache_per_host_limit = 0;
|
|
@@ -379,6 +382,7 @@ fetch_cache_get(const struct url *url, int af)
|
|
{
|
|
conn_t *conn, *last_conn = NULL;
|
|
|
|
+ pthread_mutex_lock(&cache_mtx);
|
|
for (conn = connection_cache; conn; conn = conn->next_cached) {
|
|
if (conn->cache_url->port == url->port &&
|
|
strcmp(conn->cache_url->scheme, url->scheme) == 0 &&
|
|
@@ -391,9 +395,12 @@ fetch_cache_get(const struct url *url, int af)
|
|
last_conn->next_cached = conn->next_cached;
|
|
else
|
|
connection_cache = conn->next_cached;
|
|
+
|
|
+ pthread_mutex_unlock(&cache_mtx);
|
|
return conn;
|
|
}
|
|
}
|
|
+ pthread_mutex_unlock(&cache_mtx);
|
|
|
|
return NULL;
|
|
}
|
|
@@ -414,6 +421,7 @@ fetch_cache_put(conn_t *conn, int (*closecb)(conn_t *))
|
|
return;
|
|
}
|
|
|
|
+ pthread_mutex_lock(&cache_mtx);
|
|
global_count = host_count = 0;
|
|
last = NULL;
|
|
for (iter = connection_cache; iter;
|
|
@@ -435,6 +443,7 @@ fetch_cache_put(conn_t *conn, int (*closecb)(conn_t *))
|
|
conn->cache_close = closecb;
|
|
conn->next_cached = connection_cache;
|
|
connection_cache = conn;
|
|
+ pthread_mutex_unlock(&cache_mtx);
|
|
}
|
|
|
|
/*
|
|
--
|
|
2.2.1
|
|
|