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hexchat/hexchat-Avoid-direct-use-of-libproxy.patch
Debarshi Ray c646fff977 Avoid direct use of libproxy 
Resolves: #1981509
2021-07-12 20:01:20 +02:00

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From 54321bae1feaf0845d75f67245c95795651277f5 Mon Sep 17 00:00:00 2001
From: Michael Catanzaro <mcatanzaro@redhat.com>
Date: Mon, 12 Jul 2021 08:38:02 -0500
Subject: [PATCH] Avoid direct use of libproxy
Since hexchat already depends on GLib, it's better to use GProxyResolver
instead. This might use libproxy, or not, as appropriate.
P.S. This removes a memory safety issue because proxy_list is allocated
using malloc(), not g_malloc(), and therefore using g_strfreev() is
incorrect. The proper way to free the proxy list returned by libproxy
is to use px_proxy_factory_free_proxies() (but nobody does that because
it was added in libproxy 0.4.16, which is somewhat recent).
---
meson.build | 1 -
meson_options.txt | 3 ---
src/common/hexchat.c | 16 ----------------
src/common/meson.build | 4 ----
src/common/server.c | 26 ++++++++++++++++----------
src/fe-gtk/setup.c | 2 --
6 files changed, 16 insertions(+), 36 deletions(-)
diff --git a/meson.build b/meson.build
index 18baf26e126e..381e3fd87ac6 100644
--- a/meson.build
+++ b/meson.build
@@ -33,7 +33,6 @@ config_h.set10('ENABLE_NLS', true)
# Optional features
config_h.set('USE_OPENSSL', get_option('with-ssl'))
-config_h.set('USE_LIBPROXY', get_option('with-libproxy'))
config_h.set('USE_LIBCANBERRA', get_option('with-libcanberra'))
config_h.set('USE_DBUS', get_option('with-dbus'))
config_h.set('USE_PLUGIN', get_option('with-plugin'))
diff --git a/meson_options.txt b/meson_options.txt
index 100a5ee72ad7..ad03d6bc58ef 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -13,9 +13,6 @@ option('with-plugin', type: 'boolean',
option('with-dbus', type: 'boolean',
description: 'Support used for single-instance and scripting interface, Unix only'
)
-option('with-libproxy', type: 'boolean',
- description: 'Support for getting proxy information, Unix only'
-)
option('with-libnotify', type: 'boolean',
description: 'Support for freedesktop notifications, Unix only'
)
diff --git a/src/common/hexchat.c b/src/common/hexchat.c
index e9a9a7fc9fcd..a98fcafba2f7 100644
--- a/src/common/hexchat.c
+++ b/src/common/hexchat.c
@@ -57,10 +57,6 @@
#include <glib-object.h> /* for g_type_init() */
#endif
-#ifdef USE_LIBPROXY
-#include <proxy.h>
-#endif
-
GSList *popup_list = 0;
GSList *button_list = 0;
GSList *dlgbutton_list = 0;
@@ -111,10 +107,6 @@ struct session *current_tab;
struct session *current_sess = 0;
struct hexchatprefs prefs;
-#ifdef USE_LIBPROXY
-pxProxyFactory *libproxy_factory;
-#endif
-
/*
* Update the priority queue of the "interesting sessions"
* (sess_list_by_lastact).
@@ -1101,10 +1093,6 @@ main (int argc, char *argv[])
hexchat_remote ();
#endif
-#ifdef USE_LIBPROXY
- libproxy_factory = px_proxy_factory_new ();
-#endif
-
#ifdef WIN32
coinit_result = CoInitializeEx (NULL, COINIT_APARTMENTTHREADED);
if (SUCCEEDED (coinit_result))
@@ -1147,10 +1135,6 @@ main (int argc, char *argv[])
}
#endif
-#ifdef USE_LIBPROXY
- px_proxy_factory_free (libproxy_factory);
-#endif
-
#ifdef WIN32
WSACleanup ();
#endif
diff --git a/src/common/meson.build b/src/common/meson.build
index bbb646459522..5885ec9e47c1 100644
--- a/src/common/meson.build
+++ b/src/common/meson.build
@@ -77,10 +77,6 @@ if get_option('with-ssl')
common_deps += libssl_dep
endif
-if get_option('with-libproxy')
- common_deps += dependency('libproxy-1.0')
-endif
-
if get_option('with-libcanberra')
common_deps += dependency('libcanberra', version: '>= 0.22')
endif
diff --git a/src/common/server.c b/src/common/server.c
index 3db0a9635fc5..a96e81f43d15 100644
--- a/src/common/server.c
+++ b/src/common/server.c
@@ -61,10 +61,6 @@
#include "ssl.h"
#endif
-#ifdef USE_LIBPROXY
-#include <proxy.h>
-#endif
-
#ifdef USE_OPENSSL
/* local variables */
static struct session *g_sess = NULL;
@@ -78,9 +74,15 @@ static void server_disconnect (session * sess, int sendquit, int err);
static int server_cleanup (server * serv);
static void server_connect (server *serv, char *hostname, int port, int no_login);
-#ifdef USE_LIBPROXY
-extern pxProxyFactory *libproxy_factory;
-#endif
+static void
+write_error (char *message, GError **error)
+{
+ if (error == NULL || *error == NULL) {
+ return;
+ }
+ g_printerr ("%s: %s\n", message, (*error)->message);
+ g_clear_error (error);
+}
/* actually send to the socket. This might do a character translation or
send via SSL. server/dcc both use this function. */
@@ -1365,14 +1367,16 @@ server_child (server * serv)
if (!serv->dont_use_proxy) /* blocked in serverlist? */
{
-#ifdef USE_LIBPROXY
if (prefs.hex_net_proxy_type == 5)
{
char **proxy_list;
char *url, *proxy;
+ GProxyResolver *resolver;
+ GError *error = NULL;
+ resolver = g_proxy_resolver_get_default ();
url = g_strdup_printf ("irc://%s:%d", hostname, port);
- proxy_list = px_proxy_factory_get_proxies (libproxy_factory, url);
+ proxy_list = g_proxy_resolver_lookup (resolver, url, NULL, &error);
if (proxy_list) {
/* can use only one */
@@ -1385,6 +1389,8 @@ server_child (server * serv)
proxy_type = 3;
else if (!strncmp (proxy, "socks", 5))
proxy_type = 2;
+ } else {
+ write_error ("Failed to lookup proxy", &error);
}
if (proxy_type) {
@@ -1399,7 +1405,7 @@ server_child (server * serv)
g_strfreev (proxy_list);
g_free (url);
}
-#endif
+
if (prefs.hex_net_proxy_host[0] &&
prefs.hex_net_proxy_type > 0 &&
prefs.hex_net_proxy_use != 2) /* proxy is NOT dcc-only */
diff --git a/src/fe-gtk/setup.c b/src/fe-gtk/setup.c
index 3d003eefc776..a7e3a15cac52 100644
--- a/src/fe-gtk/setup.c
+++ b/src/fe-gtk/setup.c
@@ -614,9 +614,7 @@ static const char *const proxytypes[] =
N_("SOCKS4"),
N_("SOCKS5"),
N_("HTTP"),
-#ifdef USE_LIBPROXY
N_("Auto"),
-#endif
NULL
};
--
2.31.1
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