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dns-example.c can now take a resolv.conf file on the commandline

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This commit is contained in:
Nick Mathewson 2012-05-01 17:07:50 -04:00
parent 30f0671526
commit 6610fa5a27
1 changed files with 15 additions and 6 deletions
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21
sample/dns-example.c
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@ -145,8 +145,9 @@ main(int c, char **v) {
int reverse = 0, servertest = 0, use_getaddrinfo = 0;
struct event_base *event_base = NULL;
struct evdns_base *evdns_base = NULL;
const char *resolv_conf = NULL;
if (c<2) {
fprintf(stderr, "syntax: %s [-x] [-v] hostname\n", v[0]);
fprintf(stderr, "syntax: %s [-x] [-v] [-c resolv.conf] hostname\n", v[0]);
fprintf(stderr, "syntax: %s [-servertest]\n", v[0]);
return 1;
}
@ -160,7 +161,12 @@ main(int c, char **v) {
use_getaddrinfo = 1;
else if (!strcmp(v[idx], "-servertest"))
servertest = 1;
else
else if (!strcmp(v[idx], "-c")) {
if (idx + 1 < c)
resolv_conf = v[++idx];
else
fprintf(stderr, "-c needs an argument\n");
} else
fprintf(stderr, "Unknown option %s\n", v[idx]);
++idx;
}
@ -197,11 +203,14 @@ main(int c, char **v) {
if (idx < c) {
int res;
#ifdef WIN32
res = evdns_base_config_windows_nameservers(evdns_base);
#else
res = evdns_base_resolv_conf_parse(evdns_base, DNS_OPTION_NAMESERVERS,
"/etc/resolv.conf");
if (resolv_conf == NULL)
res = evdns_base_config_windows_nameservers(evdns_base);
else
#endif
res = evdns_base_resolv_conf_parse(evdns_base,
DNS_OPTION_NAMESERVERS,
resolv_conf ? resolv_conf : "/etc/resolv.conf");
if (res < 0) {
fprintf(stderr, "Couldn't configure nameservers");
return 1;