diff options
| -rw-r--r-- | mdk-stage1/dns.c | 13 | ||||
| -rw-r--r-- | mdk-stage1/network.c | 11 |
2 files changed, 22 insertions, 2 deletions
diff --git a/mdk-stage1/dns.c b/mdk-stage1/dns.c index 5ba55486a..0ed98ad44 100644 --- a/mdk-stage1/dns.c +++ b/mdk-stage1/dns.c @@ -38,7 +38,13 @@ int mygethostbyname(char * name, struct in_addr * addr) { - struct hostent * h = gethostbyname(name); + struct hostent * h; + + /* prevent from timeouts */ + if (dns_server.s_addr == 0) + return -1; + + h = gethostbyname(name); if (!h) { if (domain) { // gethostbyname from dietlibc doesn't support domain handling @@ -65,6 +71,11 @@ char * mygethostbyaddr(char * ipnum) { struct in_addr in; struct hostent * host; + + /* prevent from timeouts */ + if (dns_server.s_addr == 0) + return NULL; + if (!inet_aton(ipnum, &in)) return NULL; host = gethostbyaddr(&(in.s_addr), sizeof(in.s_addr) /* INADDRSZ */, AF_INET); diff --git a/mdk-stage1/network.c b/mdk-stage1/network.c index 1eb786cc8..13085cfcc 100644 --- a/mdk-stage1/network.c +++ b/mdk-stage1/network.c @@ -348,8 +348,12 @@ static void static_ip_callback(char ** strings) { struct in_addr addr; - if (!inet_aton(strings[0], &addr)) + static int done = 0; + if (done) + return; + if (streq(strings[0], "") || !inet_aton(strings[0], &addr)) return; + done = 1; if (!strcmp(strings[1], "")) { char * ptr; @@ -400,6 +404,11 @@ static enum return_type setup_network_interface(struct interface_info * intf) dns_server.s_addr = 0; /* keep an understandable state */ } + if (streq(answers[0], answers[1])) { + log_message("IP and DNS are the same, guess you don't want a DNS, disabling it"); + dns_server.s_addr = 0; /* keep an understandable state */ + } + if (!inet_aton(answers[2], &gateway)) { log_message("invalid gateway"); gateway.s_addr = 0; /* keep an understandable state */ |