mirror
/
openwrt-packages
mirror of https://git.openwrt.org/feed/packages.git
1
0
Fork 0
Code Releases Activity
openwrt-packages/net/redsocks/patches/0002-inet_ntop-red_inet_nto...

162 lines
5.7 KiB
Diff
Raw Blame History

From 6015b3a6f26e04dd5d78cd6c1320886fc9035612 Mon Sep 17 00:00:00 2001
From: Leonid Evdokimov <leon@darkk.net.ru>
Date: Tue, 10 Apr 2012 01:37:34 +0400
Subject: [PATCH 02/12] inet_ntop -> red_inet_ntop
---
redsocks.c | 13 ++++---------
redudp.c | 19 +++++++++++--------
utils.c | 37 +++++++++++++++++++++++++++++++++----
utils.h | 7 +++++++
4 files changed, 55 insertions(+), 21 deletions(-)
diff --git a/redsocks.c b/redsocks.c
index d085e10..ba5eab2 100644
--- a/redsocks.c
+++ b/redsocks.c
@@ -207,22 +207,17 @@ void redsocks_log_write_plain(
int saved_errno = errno;
struct evbuffer *fmt = evbuffer_new();
va_list ap;
- char clientaddr_str[INET6_ADDRSTRLEN], destaddr_str[INET6_ADDRSTRLEN];
+ char clientaddr_str[RED_INET_ADDRSTRLEN], destaddr_str[RED_INET_ADDRSTRLEN];
if (!fmt) {
log_errno(LOG_ERR, "evbuffer_new()");
// no return, as I have to call va_start/va_end
}
- if (!inet_ntop(clientaddr->sin_family, &clientaddr->sin_addr, clientaddr_str, sizeof(clientaddr_str)))
- strncpy(clientaddr_str, "???", sizeof(clientaddr_str));
- if (!inet_ntop(destaddr->sin_family, &destaddr->sin_addr, destaddr_str, sizeof(destaddr_str)))
- strncpy(destaddr_str, "???", sizeof(destaddr_str));
-
if (fmt) {
- evbuffer_add_printf(fmt, "[%s:%i->%s:%i]: %s",
- clientaddr_str, ntohs(clientaddr->sin_port),
- destaddr_str, ntohs(destaddr->sin_port),
+ evbuffer_add_printf(fmt, "[%s->%s]: %s",
+ red_inet_ntop(clientaddr, clientaddr_str, sizeof(clientaddr_str)),
+ red_inet_ntop(destaddr, destaddr_str, sizeof(destaddr_str)),
orig_fmt);
}
diff --git a/redudp.c b/redudp.c
index 0a97852..9516a50 100644
--- a/redudp.c
+++ b/redudp.c
@@ -436,10 +436,9 @@ static void redudp_pkt_from_socks(int fd, short what, void *_arg)
return;
if (memcmp(&udprelayaddr, &client->udprelayaddr, sizeof(udprelayaddr)) != 0) {
- char buf[INET6_ADDRSTRLEN];
- const char *addr = inet_ntop(udprelayaddr.sin_family, &udprelayaddr.sin_addr, buf, sizeof(buf));
- redudp_log_error(client, LOG_NOTICE, "Got packet from unexpected address %s:%u.",
- addr ? addr : "?", ntohs(udprelayaddr.sin_port));
+ char buf[RED_INET_ADDRSTRLEN];
+ redudp_log_error(client, LOG_NOTICE, "Got packet from unexpected address %s.",
+ red_inet_ntop(&udprelayaddr, buf, sizeof(buf)));
return;
}
@@ -459,10 +458,14 @@ static void redudp_pkt_from_socks(int fd, short what, void *_arg)
if (pkt.header.ip.port != client->instance->config.destaddr.sin_port ||
pkt.header.ip.addr != client->instance->config.destaddr.sin_addr.s_addr)
{
- char buf[INET6_ADDRSTRLEN];
- const char *addr = inet_ntop(AF_INET, &pkt.header.ip.addr, buf, sizeof(buf));
- redudp_log_error(client, LOG_NOTICE, "Socks5 server relayed packet from unexpected address %s:%u.",
- addr ? addr : "?", ntohs(pkt.header.ip.port));
+ char buf[RED_INET_ADDRSTRLEN];
+ struct sockaddr_in pktaddr = {
+ .sin_family = AF_INET,
+ .sin_addr = { pkt.header.ip.addr },
+ .sin_port = pkt.header.ip.port,
+ };
+ redudp_log_error(client, LOG_NOTICE, "Socks5 server relayed packet from unexpected address %s.",
+ red_inet_ntop(&pktaddr, buf, sizeof(buf)));
return;
}
diff --git a/utils.c b/utils.c
index c6ced51..6e1f3af 100644
--- a/utils.c
+++ b/utils.c
@@ -18,6 +18,7 @@
#include <errno.h>
#include <assert.h>
#include <fcntl.h>
+#include <string.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
@@ -42,10 +43,9 @@ int red_recv_udp_pkt(int fd, char *buf, size_t buflen, struct sockaddr_in *inadd
}
if (pktlen >= buflen) {
- char buf[INET6_ADDRSTRLEN];
- const char *addr = inet_ntop(inaddr->sin_family, &inaddr->sin_addr, buf, sizeof(buf));
- log_error(LOG_WARNING, "wow! Truncated udp packet of size %zd from %s:%u! impossible! dropping it...",
- pktlen, addr ? addr : "?", ntohs(inaddr->sin_port));
+ char buf[RED_INET_ADDRSTRLEN];
+ log_error(LOG_WARNING, "wow! Truncated udp packet of size %zd from %s! impossible! dropping it...",
+ pktlen, red_inet_ntop(inaddr, buf, sizeof(buf)));
return -1;
}
@@ -176,4 +176,33 @@ int red_is_socket_connected_ok(struct bufferevent *buffev)
}
}
+char *red_inet_ntop(const struct sockaddr_in* sa, char* buffer, size_t buffer_size)
+{
+ const char *retval = 0;
+ size_t len = 0;
+ uint16_t port;
+ const char placeholder[] = "???:???";
+
+ assert(buffer_size >= sizeof(placeholder));
+
+ memset(buffer, buffer_size, 0);
+ if (sa->sin_family == AF_INET) {
+ retval = inet_ntop(AF_INET, &sa->sin_addr, buffer, buffer_size);
+ port = ((struct sockaddr_in*)sa)->sin_port;
+ }
+ else if (sa->sin_family == AF_INET6) {
+ retval = inet_ntop(AF_INET6, &((const struct sockaddr_in6*)sa)->sin6_addr, buffer, buffer_size);
+ port = ((struct sockaddr_in6*)sa)->sin6_port;
+ }
+ if (retval) {
+ assert(retval == buffer);
+ len = strlen(retval);
+ snprintf(buffer + len, buffer_size - len, ":%d", ntohs(port));
+ }
+ else {
+ strcpy(buffer, placeholder);
+ }
+ return buffer;
+}
+
/* vim:set tabstop=4 softtabstop=4 shiftwidth=4: */
diff --git a/utils.h b/utils.h
index f691b77..d3af00f 100644
--- a/utils.h
+++ b/utils.h
@@ -57,6 +57,13 @@ int fcntl_nonblock(int fd);
(what) & EVBUFFER_TIMEOUT ? "EVBUFFER_TIMEOUT" : "0", \
(what) & ~(EVBUFFER_READ|EVBUFFER_WRITE|EVBUFFER_EOF|EVBUFFER_ERROR|EVBUFFER_TIMEOUT)
+#if INET6_ADDRSTRLEN < INET_ADDRSTRLEN
+# error Impossible happens: INET6_ADDRSTRLEN < INET_ADDRSTRLEN
+#else
+# define RED_INET_ADDRSTRLEN (INET6_ADDRSTRLEN + 1 + 5 + 1) // addr + : + port + \0
+#endif
+char *red_inet_ntop(const struct sockaddr_in* sa, char* buffer, size_t buffer_size);
+
/* vim:set tabstop=4 softtabstop=4 shiftwidth=4: */
/* vim:set foldmethod=marker foldlevel=32 foldmarker={,}: */
#endif /* UTILS_H_SAT_FEB__2_02_24_05_2008 */
--
1.9.1
View Git Blame Copy Permalink