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Support HAProxy proxy v1 protocol
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Browse Source 
Added:
-H option - expect HAProxy proxy v1 header, e.g. `proxy -H`

parent ha type - send HAProxy proxy v1 header (must be last in redirection), e.g.

allow *
parent 1000 ha
parent 1000 proxy 1.2.3.4 3128
socks
This commit is contained in:
Vladimir Dubrovin 2025-03-15 15:54:29 +03:00
parent 27c9e62faa
commit 89b45b1b2a
5 changed files with 111 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
src/auth.c
View File

@ -222,6 +222,7 @@ int handleredirect(struct clientparam * param, struct ace * acentry){
int weight = 1000;
int res;
int done = 0;
int ha = 0;
struct chain * cur;
struct chain * redir = NULL;
int r2;
@ -278,6 +279,7 @@ int handleredirect(struct clientparam * param, struct ace * acentry){
return 0;
}
else if(SAISNULL(&cur->addr) && !*SAPORT(&cur->addr)){
int i;
if(cur->extuser){
if(param->extusername)
myfree(param->extusername);
@ -289,27 +291,18 @@ int handleredirect(struct clientparam * param, struct ace * acentry){
}
if(*cur->extuser == '*' && !param->username) return 4;
}
switch(cur->type){
case R_POP3:
param->redirectfunc = pop3pchild;
break;
case R_FTP:
param->redirectfunc = ftpprchild;
break;
case R_ADMIN:
param->redirectfunc = adminchild;
break;
case R_SMTP:
param->redirectfunc = smtppchild;
break;
case R_TLS:
param->redirectfunc = tlsprchild;
break;
default:
param->redirectfunc = proxychild;
for(i=0; redirs[i].name; i++){
if(cur->type == redirs[i].redir) {
param->redirectfunc = redirs[i].func;
break;
}
}
if(cur->type == R_HA){
ha = 1;
}
if(cur->next)continue;
return 0;
if(!ha) return 0;
}
else if(!*SAPORT(&cur->addr) && !SAISNULL(&cur->addr)) {
unsigned short port = *SAPORT(&param->sinsr);
@ -324,6 +317,21 @@ int handleredirect(struct clientparam * param, struct ace * acentry){
if((res = alwaysauth(param))){
return (res >= 10)? res : 60+res;
}
if(ha) {
char buf[128];
int len;
len = sprintf(buf, "PROXY %s ",
*SAFAMILY(&param->sincr) == AF_INET6 ? "TCP6" : "TCP4");
len += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), buf+len, sizeof(param->sincr));
buf[len++] = ' ';
len += myinet_ntop(*SAFAMILY(&param->sincl), SAADDR(&param->sincl), buf+len, sizeof(param->sincl));
len += sprintf(buf + len, " %hu %hu\r\n",
ntohs(*SAPORT(&param->sincr)),
ntohs(*SAPORT(&param->sincl))
);
if(socksend(param, param->remsock, (unsigned char *)buf, len, conf.timeouts[CHAIN_TO])!=len) return 39;
return 0;
}
}
else {
res = (redir)?clientnegotiate(redir, param, (struct sockaddr *)&cur->addr, cur->exthost):0;

48
src/conf.c
View File

@ -729,10 +729,34 @@ static int h_monitor(int argc, unsigned char **argv){
return 0;
}
struct redirdesc redirs[] = {
{R_TCP, "tcp", tcppmchild},
{R_CONNECT, "connect", proxychild},
{R_SOCKS4, "socks4", sockschild},
{R_SOCKS5, "socks5", sockschild},
{R_HTTP, "http", proxychild},
{R_POP3, "pop3", pop3pchild},
{R_SMTP, "smtp", smtppchild},
{R_FTP, "ftp", ftpprchild},
{R_CONNECTP, "connect+", proxychild},
{R_SOCKS4P, "socks4+", sockschild},
{R_SOCKS5P, "socks5+", sockschild},
{R_SOCKS4B, "socks4b", sockschild},
{R_SOCKS5B, "socks5b", sockschild},
{R_ADMIN, "admin", adminchild},
{R_EXTIP, "extip", NULL},
{R_TLS, "tls", tlsprchild},
{R_HA, "ha", NULL},
{R_DNS, "dns", dnsprchild},
{0, NULL, NULL}
};
static int h_parent(int argc, unsigned char **argv){
struct ace *acl = NULL;
struct chain *chains;
char * cidr;
int i;
acl = conf.acl;
while(acl && acl->next) acl = acl->next;
@ -752,23 +776,13 @@ static int h_parent(int argc, unsigned char **argv){
fprintf(stderr, "Chaining error: bad chain weight %u line %d\n", chains->weight, linenum);
return(3);
}
if(!strcmp((char *)argv[2], "tcp"))chains->type = R_TCP;
else if(!strcmp((char *)argv[2], "http"))chains->type = R_HTTP;
else if(!strcmp((char *)argv[2], "connect"))chains->type = R_CONNECT;
else if(!strcmp((char *)argv[2], "socks4"))chains->type = R_SOCKS4;
else if(!strcmp((char *)argv[2], "socks5"))chains->type = R_SOCKS5;
else if(!strcmp((char *)argv[2], "connect+"))chains->type = R_CONNECTP;
else if(!strcmp((char *)argv[2], "socks4+"))chains->type = R_SOCKS4P;
else if(!strcmp((char *)argv[2], "socks5+"))chains->type = R_SOCKS5P;
else if(!strcmp((char *)argv[2], "socks4b"))chains->type = R_SOCKS4B;
else if(!strcmp((char *)argv[2], "socks5b"))chains->type = R_SOCKS5B;
else if(!strcmp((char *)argv[2], "pop3"))chains->type = R_POP3;
else if(!strcmp((char *)argv[2], "tls"))chains->type = R_TLS;
else if(!strcmp((char *)argv[2], "ftp"))chains->type = R_FTP;
else if(!strcmp((char *)argv[2], "admin"))chains->type = R_ADMIN;
else if(!strcmp((char *)argv[2], "extip"))chains->type = R_EXTIP;
else if(!strcmp((char *)argv[2], "smtp"))chains->type = R_SMTP;
else {
for(i = 0; redirs[i].name ; i++){
if(!strcmp((char *)argv[2], redirs[i].name)) {
chains->type = redirs[i].redir;
break;
}
}
if(!redirs[i].name) {
fprintf(stderr, "Chaining error: bad chain type (%s)\n", argv[2]);
return(4);
}

22
src/datatypes.c
View File

@ -325,24 +325,12 @@ static void * ef_chain_next(struct node * node){
}
static void * ef_chain_type(struct node * node){
switch (((struct chain *)node->value) -> type) {
case R_TCP:
return "tcp";
case R_CONNECT:
return "connect";
case R_SOCKS4:
return "socks4";
case R_SOCKS5:
return "socks5";
case R_HTTP:
return "http";
case R_FTP:
return "ftp";
case R_POP3:
return "pop3";
default:
return "";
int i;
for(i=0; redirs[i].name; i++){
if(((struct chain *)node->value) -> type == redirs[i].redir) return redirs[i].name;
}
return "";
}
static void * ef_chain_addr(struct node * node){

34
src/proxymain.c
View File

@ -74,6 +74,37 @@ void * threadfunc (void *p) {
#endif
#endif
if(param->srv->haproxy){
char buf[128];
int i;
i = sockgetlinebuf(param, CLIENT, (unsigned char *)buf, sizeof(buf)-1, '\n', conf.timeouts[STRING_S]);
if(i > 12 && !strncasecmp(buf, "PROXY TCP", 9)){
char *token, *token2=NULL;
unsigned short u1=0, u2=0;
buf[i] = 0;
token = strchr(buf, ' ');
if(token) token = strchr(token+1, ' ');
if(token) token++;
if(token) token2 = strchr(token+1, ' ');
if(token2) {
*token2 = 0;
getip46(46, (unsigned char*) token, (struct sockaddr *)&param->sincr);
token = token2+1;
token2 = strchr(token, ' ');
}
if(token2) {
*token2 = 0;
getip46(46, (unsigned char *) token, (struct sockaddr *)&param->sincl);
token = token2+1;
token2 = strchr(token, ' ');
}
if(token){
sscanf(token,"%hu%hu", &u1, &u2);
if(u1) *SAPORT(&param->sincr) = htons(u1);
if(u2) *SAPORT(&param->sincl) = htons(u1);
}
}
}
((struct clientparam *) p)->srv->pf((struct clientparam *)p);
}
#ifdef _WIN32
@ -417,6 +448,9 @@ int MODULEMAINFUNC (int argc, char** argv){
case 'h':
hostname = argv[i] + 2;
break;
case 'H':
srv.haproxy=1;
break;
case 'c':
srv.requirecert = 1;
if(isdigit(argv[i][2])) srv.requirecert = atoi(argv[i]+2);

16
src/structures.h
View File

@ -266,7 +266,7 @@ struct passwords {
};
typedef enum {
R_TCP,
R_TCP = 1,
R_CONNECT,
R_SOCKS4,
R_SOCKS5,
@ -281,9 +281,20 @@ typedef enum {
R_SOCKS5B,
R_ADMIN,
R_EXTIP,
R_TLS
R_TLS,
R_HA,
R_DNS
} REDIRTYPE;
struct redirdesc {
REDIRTYPE redir;
char * name;
void * (*func)(struct clientparam *);
};
extern struct redirdesc redirs[];
struct chain {
struct chain * next;
int type;
@ -490,6 +501,7 @@ struct srvparam {
int clisockopts, srvsockopts, lissockopts, cbcsockopts, cbssockopts;
int gracetraf, gracenum, gracedelay;
int requirecert;
int haproxy;
#ifdef WITHSPLICE
int usesplice;
#endif