mirror of https://github.com/getdnsapi/getdns.git
82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <getdns_core_only.h>
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int main()
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{
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getdns_return_t this_ret; /* Holder for all function returns */
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/* Create the DNS context for this call */
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getdns_context *this_context = NULL;
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getdns_return_t context_create_return = getdns_context_create(&this_context, 1);
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if (context_create_return != GETDNS_RETURN_GOOD)
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{
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fprintf(stderr, "Trying to create the context failed: %d\n", context_create_return);
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return(GETDNS_RETURN_GENERIC_ERROR);
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}
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/* Set up the getdns_sync_request call */
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const char * this_name = "www.example.com";
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uint8_t this_request_type = GETDNS_RRTYPE_A;
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/* Get the A and AAAA records */
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getdns_dict * this_extensions = getdns_dict_create();
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this_ret = getdns_dict_set_int(this_extensions, "return_both_v4_and_v6", GETDNS_EXTENSION_TRUE);
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if (this_ret != GETDNS_RETURN_GOOD)
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{
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fprintf(stderr, "Trying to set an extension do both IPv4 and IPv6 failed: %d\n", this_ret);
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getdns_dict_destroy(this_extensions);
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getdns_context_destroy(this_context);
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return(GETDNS_RETURN_GENERIC_ERROR);
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}
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getdns_dict * this_response = NULL;
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/* Make the call */
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getdns_return_t dns_request_return = getdns_general_sync(this_context, this_name, this_request_type,
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this_extensions, &this_response);
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if (dns_request_return == GETDNS_RETURN_BAD_DOMAIN_NAME)
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{
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fprintf(stderr, "A bad domain name was used: %s. Exiting.\n", this_name);
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getdns_dict_destroy(this_response);
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getdns_dict_destroy(this_extensions);
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getdns_context_destroy(this_context);
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return(GETDNS_RETURN_GENERIC_ERROR);
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}
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else
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{
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/* Be sure the search returned something */
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uint32_t this_error;
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this_ret = getdns_dict_get_int(this_response, "status", &this_error); // Ignore any error
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if (this_error != GETDNS_RESPSTATUS_GOOD) // If the search didn't return "good"
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{
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fprintf(stderr, "The search had no results, and a return value of %d. Exiting.\n", this_error);
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getdns_dict_destroy(this_response);
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getdns_dict_destroy(this_extensions);
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getdns_context_destroy(this_context);
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return(GETDNS_RETURN_GENERIC_ERROR);
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}
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getdns_list * just_the_addresses_ptr;
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this_ret = getdns_dict_get_list(this_response, "just_address_answers", &just_the_addresses_ptr); // Ignore any error
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size_t num_addresses;
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this_ret = getdns_list_get_length(just_the_addresses_ptr, &num_addresses); // Ignore any error
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/* Go through each record */
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for ( size_t rec_count = 0; rec_count < num_addresses; ++rec_count )
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{
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getdns_dict * this_address;
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this_ret = getdns_list_get_dict(just_the_addresses_ptr, rec_count, &this_address); // Ignore any error
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/* Just print the address */
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getdns_bindata * this_address_data;
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this_ret = getdns_dict_get_bindata(this_address, "address_data", &this_address_data); // Ignore any error
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char *this_address_str = getdns_display_ip_address(this_address_data);
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printf("The address is %s\n", this_address_str);
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free(this_address_str);
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}
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}
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/* Clean up */
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getdns_dict_destroy(this_response);
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getdns_dict_destroy(this_extensions);
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getdns_context_destroy(this_context);
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/* Assuming we get here, leave gracefully */
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exit(EXIT_SUCCESS);
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}
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