diff options
| author | rofl0r <retnyg@gmx.net> | 2019-02-28 17:07:08 +0300 |
|---|---|---|
| committer | rofl0r <retnyg@gmx.net> | 2019-02-28 17:07:08 +0300 |
| commit | b8cdfe842ceb8a3f35d1f6e3c86cbda48b2f4d38 (patch) | |
| tree | 997efca3e944ca03b054cd6f4dbf27ea9c351252 /src | |
| parent | 9f17774b9917018ae70057137ff1fd37222278b8 (diff) | |
allow non-numeric proxy ips under certain circumstances
conditions that need to be met are:
1) chaintype strict
2) proxy_dns on
3) not the first proxy in the list
if these conditions are met, the dns name can be passed to be
receiving proxy and be resolved there.
addressing https://github.com/rofl0r/proxychains-ng/issues/246#issuecomment-468222637
Diffstat (limited to 'src')
| -rw-r--r-- | src/libproxychains.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/libproxychains.c b/src/libproxychains.c index 94d343a..6b6467c 100644 --- a/src/libproxychains.c +++ b/src/libproxychains.c @@ -256,6 +256,10 @@ inv_string: return 0; } +static const char* bool_str(int bool_val) { + if(bool_val) return "true"; + return "false"; +} /* get configuration from config file */ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_type * ct) { @@ -311,8 +315,20 @@ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_typ pd[count].port = htons((unsigned short) port_n); ip_type* host_ip = &pd[count].ip; if(1 != inet_pton(host_ip->is_v6 ? AF_INET6 : AF_INET, host, host_ip->addr.v6)) { - fprintf(stderr, "proxy %s has invalid value or is not numeric\n", host); - exit(1); + if(*ct == STRICT_TYPE && proxychains_resolver && count > 0) { + /* we can allow dns hostnames for all but the first proxy in the list if chaintype is strict, as remote lookup can be done */ + ip_type4 internal_ip = at_get_ip_for_host(host, strlen(host)); + pd[count].ip.is_v6 = 0; + host_ip->addr.v4 = internal_ip; + if(internal_ip.as_int == ip_type_invalid.addr.v4.as_int) + goto inv_host; + } else { +inv_host: + fprintf(stderr, "proxy %s has invalid value or is not numeric\n", host); + fprintf(stderr, "non-numeric ips are only allowed under the following circumstances:\n"); + fprintf(stderr, "chaintype == strict (%s), proxy is not first in list (%s), proxy_dns active (%s)\n\n", bool_str(*ct == STRICT_TYPE), bool_str(count > 0), bool_str(proxychains_resolver)); + exit(1); + } } if(!strcmp(type, "http")) { |