mirror of https://github.com/getdnsapi/getdns.git
Reversed lookups with getdns_query
This commit is contained in:
Willem Toorop
parent
cf64c38dc1
commit
9356da25ac
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@ -32,7 +32,7 @@
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#include <getdns/getdns.h>
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#include <getdns/getdns_extra.h>
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int my_get_rrtype(const char *t);
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int get_rrtype(const char *t);
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void
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print_usage(FILE *out, const char *progname)
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@ -42,18 +42,18 @@ print_usage(FILE *out, const char *progname)
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fprintf(out, "options:\n");
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fprintf(out, "\t-a\tPerform asynchronous resolution "
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"(default = synchronous)\n");
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fprintf(out, "\t-A\taddress lookup\n");
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fprintf(out, "\t-A\taddress lookup (<type> is ignored)\n");
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fprintf(out, "\t-b <bufsize>\tSet edns0 max_udp_payload size\n");
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fprintf(out, "\t-D\tSet edns0 do bit\n");
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fprintf(out, "\t-d\tclear edns0 do bit\n");
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fprintf(out, "\t-G\tgeneral lookup\n");
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fprintf(out, "\t-H\thostname lookup\n");
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fprintf(out, "\t-H\thostname lookup. (<name> must be an IP address; <type> is ignored)\n");
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fprintf(out, "\t-h\tPrint this help\n");
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fprintf(out, "\t-i\tPrint api information\n");
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fprintf(out, "\t-I\tInteractive mode (> 1 queries on same context)\n");
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fprintf(out, "\t-r\tSet recursing resolution type\n");
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fprintf(out, "\t-s\tSet stub resolution type (default = recursing)\n");
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fprintf(out, "\t-S\tservice lookup\n");
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fprintf(out, "\t-S\tservice lookup (<type> is ignored)\n");
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fprintf(out, "\t-t <timeout>\tSet timeout in miliseconds\n");
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fprintf(out, "\t-T\tSet transport to TCP only\n");
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fprintf(out, "\t-O\tSet transport to TCP only keep connections open\n");
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@ -84,11 +84,17 @@ ipaddr_dict(getdns_context *context, char *ipstr)
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if (strchr(ipstr, ':')) {
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getdns_dict_util_set_string(r, "address_type", "IPv6");
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addr.size = 16;
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(void) inet_pton(AF_INET6, ipstr, buf);
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if (inet_pton(AF_INET6, ipstr, buf) <= 0) {
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getdns_dict_destroy(r);
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return NULL;
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}
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} else {
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getdns_dict_util_set_string(r, "address_type", "IPv4");
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addr.size = 4;
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(void) inet_pton(AF_INET, ipstr, buf);
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if (inet_pton(AF_INET, ipstr, buf) <= 0) {
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getdns_dict_destroy(r);
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return NULL;
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}
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}
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getdns_dict_set_bindata(r, "address_data", &addr);
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if (*portstr)
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@ -111,8 +117,8 @@ void callback(getdns_context *context, getdns_callback_type_t callback_type,
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int
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main(int argc, char **argv)
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{
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const char *the_root = ".";
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const char *name = the_root;
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char *the_root = ".";
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char *name = the_root;
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getdns_context *context;
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getdns_dict *extensions;
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getdns_dict *response = NULL;
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@ -126,6 +132,7 @@ main(int argc, char **argv)
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size_t upstream_count = 0;
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int print_api_info = 0, async = 0, interactive = 0;
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enum { GENERAL, ADDRESS, HOSTNAME, SERVICE } calltype = GENERAL;
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getdns_dict *address;
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if ((r = getdns_context_create(&context, 1))) {
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fprintf(stderr, "Create context failed: %d\n", r);
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@ -146,7 +153,7 @@ main(int argc, char **argv)
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for (i = 1; i < argc; i++) {
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arg = argv[i];
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if ((t = my_get_rrtype(arg)) >= 0) {
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if ((t = get_rrtype(arg)) >= 0) {
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request_type = t;
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continue;
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@ -296,12 +303,18 @@ next: ;
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if (! token)
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continue;
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do if ((t = my_get_rrtype(token)) >= 0)
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do if ((t = get_rrtype(token)) >= 0)
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request_type = t;
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else
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name = token;
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while ((token = strtok(NULL, " \t\f\n\r")));
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}
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if (calltype == HOSTNAME &&
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!(address = ipaddr_dict(context, name))) {
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fprintf(stderr, "Could not convert \"%s\" "
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"to an IP address", name);
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continue;
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}
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if (async) {
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switch (calltype) {
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case GENERAL:
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@ -312,6 +325,10 @@ next: ;
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r = getdns_address(context, name,
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extensions, &response, NULL, callback);
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break;
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case HOSTNAME:
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r = getdns_hostname(context, address,
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extensions, &response, NULL, callback);
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break;
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case SERVICE:
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r = getdns_service(context, name,
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extensions, &response, NULL, callback);
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@ -334,6 +351,10 @@ next: ;
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r = getdns_address_sync(context, name,
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extensions, &response);
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break;
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case HOSTNAME:
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r = getdns_hostname_sync(context, address,
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extensions, &response);
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break;
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case SERVICE:
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r = getdns_service_sync(context, name,
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extensions, &response);
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@ -368,6 +389,9 @@ done_destroy_context:
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}
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int get_rrtype(const char *t) {
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char *endptr;
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int r;
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switch (t[0]) {
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case 'A':
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case 'a': switch (t[1]) {
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@ -748,6 +772,13 @@ int get_rrtype(const char *t) {
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if ((t[2]|0x20) == 't' && t[3] == '\0')
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return GETDNS_RRTYPE_TXT;
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return -1;
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case 'Y':
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case 'y': /* before "TY", then "PE" followed by a number */
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if ((t[2]|0x20) == 'p' && (t[3]|0x20) == 'e' && t[4] != '\0') {
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r = (int) strtol(t + 4, &endptr, 10);
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if (*endptr == '\0') return r;
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}
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return -1;
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default : return -1;
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};
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case 'U':
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@ -789,18 +820,3 @@ int get_rrtype(const char *t) {
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};
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}
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int my_get_rrtype(const char *t)
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{
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int r = get_rrtype(t);
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char *endptr;
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if (r >= 0)
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return r;
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if (strncasecmp(t, "type", 4) == 0 && t[4] != '\0') {
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r = (int) strtol(t+4, &endptr, 10);
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if (*endptr != '\0')
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r = -1;
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}
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return r;
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}
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