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make it warn about internal IPs not only if we had to guess,

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but also if they used a hostname rather than an IP


svn:r1285
This commit is contained in:
Roger Dingledine 2004-03-15 04:57:24 +00:00
parent 39835dd9f6
commit 0b9c140102
1 changed files with 14 additions and 10 deletions
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24
src/or/config.c
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@ -349,10 +349,10 @@ static int resolve_my_address(or_options_t *options) {
struct in_addr in; struct in_addr in;
struct hostent *rent; struct hostent *rent;
char localhostname[256]; char localhostname[256];
int guessed=0; int explicit_ip=1;
if(!options->Address) { /* then we need to guess our address */ if(!options->Address) { /* then we need to guess our address */
guessed = 1; explicit_ip = 0; /* it's implicit */
if(gethostname(localhostname,sizeof(localhostname)) < 0) { if(gethostname(localhostname,sizeof(localhostname)) < 0) {
log_fn(LOG_WARN,"Error obtaining local hostname"); log_fn(LOG_WARN,"Error obtaining local hostname");
@ -371,16 +371,20 @@ static int resolve_my_address(or_options_t *options) {
/* now we know options->Address is set. resolve it and keep only the IP */ /* now we know options->Address is set. resolve it and keep only the IP */
rent = (struct hostent *)gethostbyname(options->Address); if(tor_inet_aton(options->Address, &in) == 0) {
if (!rent) { /* then we have to resolve it */
log_fn(LOG_WARN,"Could not resolve Address %s. Failing.", options->Address); explicit_ip = 0;
return -1; rent = (struct hostent *)gethostbyname(options->Address);
if (!rent) {
log_fn(LOG_WARN,"Could not resolve Address %s. Failing.", options->Address);
return -1;
}
assert(rent->h_length == 4);
memcpy(&in.s_addr, rent->h_addr,rent->h_length);
} }
assert(rent->h_length == 4); if(!explicit_ip && is_internal_IP(htonl(in.s_addr))) {
memcpy(&in.s_addr, rent->h_addr,rent->h_length);
if(guessed==1 && is_internal_IP(htonl(in.s_addr))) {
log_fn(LOG_WARN,"Address '%s' resolves to private IP '%s'. " log_fn(LOG_WARN,"Address '%s' resolves to private IP '%s'. "
"Please set the Address config option to be your public IP.", "Please set the Address config option to be the IP you want to use.",
options->Address, inet_ntoa(in)); options->Address, inet_ntoa(in));
return -1; return -1;
} }