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tpws: --mss

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bol-van
2024-03-27 17:48:37 +03:00
parent ed69120539
commit e0250e44af
17 changed files with 121 additions and 5 deletions
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59
tpws/tpws_conn.c
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@@ -20,7 +20,6 @@
#include "tpws_conn.h"
#include "redirect.h"
#include "tamper.h"
#include "params.h"
#include "socks.h"
#include "helpers.h"
@@ -336,7 +335,7 @@ static bool proxy_remote_conn_ack(tproxy_conn_t *conn, int sock_err)
//Returns -1 if something fails, >0 on success (socket fd).
static int connect_remote(const struct sockaddr *remote_addr)
{
int remote_fd = 0, yes = 1, no = 0;
int remote_fd = 0, yes = 1, no = 0, v;
if((remote_fd = socket(remote_addr->sa_family, SOCK_STREAM, 0)) < 0)
@@ -368,10 +367,28 @@ static int connect_remote(const struct sockaddr *remote_addr)
}
if (setsockopt(remote_fd, IPPROTO_TCP, TCP_NODELAY, params.skip_nodelay ? &no : &yes, sizeof(int)) <0)
{
perror("setsockopt (SO_NODELAY, connect_remote)");
perror("setsockopt (TCP_NODELAY, connect_remote)");
close(remote_fd);
return -1;
}
if (params.mss)
{
uint16_t port = saport(remote_addr);
if (pf_in_range(port,&params.mss_pf))
{
VPRINT("Setting MSS %d",params.mss)
if (setsockopt(remote_fd, IPPROTO_TCP, TCP_MAXSEG, &params.mss, sizeof(int)) <0)
{
perror("setsockopt (TCP_MAXSEG, connect_remote)");
close(remote_fd);
return -1;
}
}
else
{
VPRINT("Not setting MSS. Port %u is out of MSS port range.",port)
}
}
if(connect(remote_fd, remote_addr, remote_addr->sa_family == AF_INET ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6)) < 0)
{
if(errno != EINPROGRESS)
@@ -1043,7 +1060,7 @@ static bool handle_epoll(tproxy_conn_t *conn, struct tailhead *conn_list, uint32
if (split_pos)
{
VPRINT("Splitting at pos %zu%s", split_pos, (split_flags & SPLIT_FLAG_DISORDER) ? " with disorder" : "")
if (split_flags && SPLIT_FLAG_OOB)
if (split_flags & SPLIT_FLAG_OOB)
{
VPRINT("Sending OOB byte %02X", params.oob_byte)
uint8_t oob_save;
@@ -1394,3 +1411,37 @@ ex:
if (listen_conn) free(listen_conn);
return retval;
}
bool pf_in_range(uint16_t port, const port_filter *pf)
{
return port && ((!pf->from && !pf->to || port>=pf->from && port<=pf->to) ^ pf->neg);
}
bool pf_parse(const char *s, port_filter *pf)
{
unsigned int v1,v2;
if (!s) return false;
if (*s=='~')
{
pf->neg=true;
s++;
}
else
pf->neg=false;
if (sscanf(s,"%u-%u",&v1,&v2)==2)
{
if (!v1 || v1>65535 || v2>65535 || v1>v2) return false;
pf->from=(uint16_t)v1;
pf->to=(uint16_t)v2;
}
else if (sscanf(s,"%u",&v1)==1)
{
if (!v1 || v1>65535) return false;
pf->to=pf->from=(uint16_t)v1;
}
else
return false;
return true;
}