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bind address for connect

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This commit is contained in:
Vladimir Goncharov 2024-08-22 15:49:50 +07:00
parent a863c35ce3
commit c793ec8e1c
3 changed files with 51 additions and 8 deletions
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3
tpws/params.h
View File

@ -72,6 +72,9 @@ struct params_s
bool tamper_start_n,tamper_cutoff_n;
unsigned int tamper_start,tamper_cutoff;
struct sockaddr_in connect_bind4;
struct sockaddr_in6 connect_bind6;
int debug;
#if defined(BSD)

35
tpws/tpws.c
View File

@ -138,6 +138,7 @@ static void exithelp(void)
" * multiple binds are supported. each bind-addr, bind-iface* start new bind\n"
" --port=<port>\t\t\t\t; only one port number for all binds is supported\n"
" --socks\t\t\t\t; implement socks4/5 proxy instead of transparent proxy\n"
" --connect-bind-addr=<v4_addr>|<v6_addr> ; address for outbound connections\n"
" --no-resolve\t\t\t\t; disable socks5 remote dns ability\n"
" --resolver-threads=<int>\t\t; number of resolver worker threads\n"
" --local-rcvbuf=<bytes>\n"
@ -355,13 +356,14 @@ void parse_params(int argc, char *argv[])
{ "skip-nodelay",no_argument,0,0 },// optidx=51
{ "tamper-start",required_argument,0,0 },// optidx=52
{ "tamper-cutoff",required_argument,0,0 },// optidx=53
{ "connect-bind-addr",required_argument,0,0 },// optidx=54
#if defined(BSD) && !defined(__OpenBSD__) && !defined(__APPLE__)
{ "enable-pf",no_argument,0,0 },// optidx=54
{ "enable-pf",no_argument,0,0 },// optidx=55
#elif defined(__linux__)
{ "mss",required_argument,0,0 },// optidx=54
{ "mss-pf",required_argument,0,0 },// optidx=55
{ "mss",required_argument,0,0 },// optidx=55
{ "mss-pf",required_argument,0,0 },// optidx=56
#ifdef SPLICE_PRESENT
{ "nosplice",no_argument,0,0 },// optidx=55
{ "nosplice",no_argument,0,0 },// optidx=57
#endif
#endif
{ "hostlist-auto-retrans-threshold",optional_argument,0,0}, // ignored. for nfqws command line compatibility
@ -784,12 +786,29 @@ void parse_params(int argc, char *argv[])
params.tamper_cutoff = atoi(p);
}
break;
case 54: /* connect-bind-addr */
{
if (inet_pton(AF_INET, optarg, &params.connect_bind4.sin_addr))
{
params.connect_bind4.sin_family = AF_INET;
}
else if (inet_pton(AF_INET6, optarg, &params.connect_bind6.sin6_addr))
{
params.connect_bind6.sin6_family = AF_INET6;
}
else
{
fprintf(stderr, "bad bind addr : %s\n", optarg);
exit_clean(1);
}
}
break;
#if defined(BSD) && !defined(__OpenBSD__) && !defined(__APPLE__)
case 54: /* enable-pf */
case 55: /* enable-pf */
params.pf_enable = true;
break;
#elif defined(__linux__)
case 54: /* mss */
case 55: /* mss */
// this option does not work in any BSD and MacOS. OS may accept but it changes nothing
params.mss = atoi(optarg);
if (params.mss<88 || params.mss>32767)
@ -798,7 +817,7 @@ void parse_params(int argc, char *argv[])
exit_clean(1);
}
break;
case 55: /* mss-pf */
case 56: /* mss-pf */
if (!pf_parse(optarg,&params.mss_pf))
{
fprintf(stderr, "Invalid MSS port filter.\n");
@ -806,7 +825,7 @@ void parse_params(int argc, char *argv[])
}
break;
#ifdef SPLICE_PRESENT
case 56: /* nosplice */
case 57: /* nosplice */
params.nosplice = true;
break;
#endif

21
tpws/tpws_conn.c
View File

@ -390,6 +390,27 @@ static int connect_remote(const struct sockaddr *remote_addr, bool bApplyConnect
VPRINT("Not setting MSS. Port %u is out of MSS port range.",port)
}
}
// if no bind address specified - address family will be 0 in params_connect_bindX
if(remote_addr->sa_family == params.connect_bind4.sin_family)
{
if (bind(remote_fd, (struct sockaddr *)&params.connect_bind4, sizeof(struct sockaddr_in)) == -1)
{
perror("bind on connect");
close(remote_fd);
return -1;
}
}
else if(remote_addr->sa_family == params.connect_bind6.sin6_family)
{
if (bind(remote_fd, (struct sockaddr *)&params.connect_bind6, sizeof(struct sockaddr_in6)) == -1)
{
perror("bind on connect");
close(remote_fd);
return -1;
}
}
if (connect(remote_fd, remote_addr, remote_addr->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)) < 0)
{
if(errno != EINPROGRESS)