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This commit is contained in:
ruti 2023-11-23 20:27:39 +01:00
parent fde79cf591
commit 86d725ed66
1 changed files with 13 additions and 13 deletions
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24
proxy.c
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@ -130,18 +130,18 @@ int auth_socks5(int fd, char *buffer, ssize_t n)
if (n <= 2 || (uint8_t)buffer[1] != (n - 2)) {
return -1;
}
buffer[1] = S_AUTH_BAD;
long i = 2;
for (; i < n; i++)
uint8_t c = S_AUTH_BAD;
for (long i = 2; i < n; i++)
if (buffer[i] == S_AUTH_NONE) {
buffer[1] = S_AUTH_NONE;
c = S_AUTH_NONE;
break;
}
buffer[1] = c;
if (send(fd, buffer, 2, 0) < 0) {
perror("send");
return -1;
}
return i < n ? 0 : -1;
return c != S_AUTH_BAD ? 0 : -1;
}
@ -185,26 +185,26 @@ int resp_error(int fd, int e, int flag)
}
int s4_get_addr(int fd, char *bf,
size_t n, struct sockaddr_ina *dst)
int s4_get_addr(char *buff, size_t n,
struct sockaddr_ina *dst)
{
if (n < sizeof(struct s4_req) + 1) {
return -1;
}
struct s4_req *r = (struct s4_req *)bf;
struct s4_req *r = (struct s4_req *)buff;
if (r->cmd != S_CMD_CONN) {
return -1;
}
if (ntohl(r->i4.s_addr) <= 255) {
if (!params.resolve || bf[n - 1] != 0) {
if (!params.resolve || buff[n - 1] != 0) {
return -1;
}
char *id_end = strchr(bf + sizeof(*r), 0);
char *id_end = strchr(buff + sizeof(*r), 0);
if (!id_end) {
return -1;
}
int len = (bf + n - id_end) - 2;
int len = (buff + n - id_end) - 2;
if (len < 3 || len > 255) {
return -1;
}
@ -369,7 +369,7 @@ static inline int on_request(struct poolhd *pool, struct eval *val,
else if (*buffer == S_VER4) {
val->flag = FLAG_S4;
int error = s4_get_addr(val->fd, buffer, n, &dst);
int error = s4_get_addr(buffer, n, &dst);
if (!error) {
error = create_conn(pool, val, &dst);
}