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make remote_dns_subnet a config option

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rofl0r
2012-01-26 12:44:42 +01:00
parent 75d41dea3d
commit 4da71e1b44
3 changed files with 32 additions and 10 deletions
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8
src/core.c
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@ -44,6 +44,7 @@ pthread_mutex_t internal_ips_lock;
extern int tcp_read_time_out;
extern int tcp_connect_time_out;
extern int proxychains_quiet_mode;
extern unsigned int remote_dns_subnet;
internal_ip_lookup_table internal_ips = {0, 0, NULL};
@ -84,7 +85,7 @@ in_addr_t make_internal_ip(uint32_t index) {
ip_type ret;
index++; // so we can start at .0.0.1
if(index > 0xFFFFFF) return (in_addr_t) -1;
ret.octet[0] = 224;
ret.octet[0] = remote_dns_subnet & 0xFF;
ret.octet[1] = (index & 0xFF0000) >> 16;
ret.octet[2] = (index & 0xFF00) >> 8;
ret.octet[3] = index & 0xFF;
@ -260,7 +261,8 @@ static int tunnel_to(int sock, ip_type ip, unsigned short port, proxy_type pt,ch
// we use ip addresses with 224.* to lookup their dns name in our table, to allow remote DNS resolution
// the range 224-255.* is reserved, and it won't go outside (unless the app does some other stuff with
// the results returned from gethostbyname et al.)
if(ip.octet[0] == 224) {
// the hardcoded number 224 can now be changed using the config option remote_dns_subnet to i.e. 127
if(ip.octet[0] == remote_dns_subnet) {
dns_name = string_from_internal_ip(ip);
if(!dns_name) goto err;
dns_len = strlen(dns_name);
@ -584,7 +586,7 @@ static int chain_step(int ns, proxy_data *pfrom, proxy_data *pto)
#ifdef DEBUG
PDEBUG("chain_step()\n");
#endif
if(pto->ip.octet[0] == 224) {
if(pto->ip.octet[0] == remote_dns_subnet) {
hostname = string_from_internal_ip(pto->ip);
if(!hostname) goto usenumericip;
} else {