122 lines
4.4 KiB
C
122 lines
4.4 KiB
C
#include <dnswire/dnstap.h>
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#include <stdio.h>
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#include <inttypes.h>
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#include <arpa/inet.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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static const char* printable_string(const uint8_t* data, size_t len)
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{
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static char buf[512], hex;
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size_t r = 0, w = 0;
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while (r < len && w < sizeof(buf) - 1) {
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if (isprint(data[r])) {
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buf[w++] = data[r++];
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} else {
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if (w + 4 >= sizeof(buf) - 1) {
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break;
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}
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buf[w++] = '\\';
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buf[w++] = 'x';
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hex = (data[r] & 0xf0) >> 4;
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if (hex > 9) {
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buf[w++] = 'a' + (hex - 10);
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} else {
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buf[w++] = '0' + hex;
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}
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hex = data[r++] & 0xf;
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if (hex > 9) {
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buf[w++] = 'a' + (hex - 10);
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} else {
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buf[w++] = '0' + hex;
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}
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}
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}
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if (w >= sizeof(buf)) {
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buf[sizeof(buf) - 1] = 0;
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} else {
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buf[w] = 0;
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}
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return buf;
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}
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static const char* printable_ip_address(const uint8_t* data, size_t len)
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{
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static char buf[INET6_ADDRSTRLEN];
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buf[0] = 0;
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if (len == 4) {
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inet_ntop(AF_INET, data, buf, sizeof(buf));
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} else if (len == 16) {
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inet_ntop(AF_INET6, data, buf, sizeof(buf));
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}
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return buf;
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}
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static void print_dnstap(const struct dnstap* d)
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{
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printf("---- dnstap\n");
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/*
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* Now we can print the available information in the message.
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*/
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if (dnstap_has_identity(*d)) {
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printf("identity: %s\n", printable_string(dnstap_identity(*d), dnstap_identity_length(*d)));
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}
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if (dnstap_has_version(*d)) {
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printf("version: %s\n", printable_string(dnstap_version(*d), dnstap_version_length(*d)));
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}
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if (dnstap_has_extra(*d)) {
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printf("extra: %s\n", printable_string(dnstap_extra(*d), dnstap_extra_length(*d)));
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}
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if (dnstap_type(*d) == DNSTAP_TYPE_MESSAGE && dnstap_has_message(*d)) {
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printf("message:\n type: %s\n", DNSTAP_MESSAGE_TYPE_STRING[dnstap_message_type(*d)]);
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if (dnstap_message_has_query_time_sec(*d) && dnstap_message_has_query_time_nsec(*d)) {
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printf(" query_time: %" PRIu64 ".%" PRIu32 "\n", dnstap_message_query_time_sec(*d), dnstap_message_query_time_nsec(*d));
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}
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if (dnstap_message_has_response_time_sec(*d) && dnstap_message_has_response_time_nsec(*d)) {
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printf(" response_time: %" PRIu64 ".%" PRIu32 "\n", dnstap_message_response_time_sec(*d), dnstap_message_response_time_nsec(*d));
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}
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if (dnstap_message_has_socket_family(*d)) {
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printf(" socket_family: %s\n", DNSTAP_SOCKET_FAMILY_STRING[dnstap_message_socket_family(*d)]);
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}
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if (dnstap_message_has_socket_protocol(*d)) {
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printf(" socket_protocol: %s\n", DNSTAP_SOCKET_PROTOCOL_STRING[dnstap_message_socket_protocol(*d)]);
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}
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if (dnstap_message_has_query_address(*d)) {
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printf(" query_address: %s\n", printable_ip_address(dnstap_message_query_address(*d), dnstap_message_query_address_length(*d)));
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}
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if (dnstap_message_has_query_port(*d)) {
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printf(" query_port: %u\n", dnstap_message_query_port(*d));
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}
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if (dnstap_message_has_response_address(*d)) {
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printf(" response_address: %s\n", printable_ip_address(dnstap_message_response_address(*d), dnstap_message_response_address_length(*d)));
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}
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if (dnstap_message_has_response_port(*d)) {
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printf(" response_port: %u\n", dnstap_message_response_port(*d));
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}
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if (dnstap_message_has_query_zone(*d)) {
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printf(" query_zone: %s\n", printable_string(dnstap_message_query_zone(*d), dnstap_message_query_zone_length(*d)));
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}
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if (dnstap_message_has_query_message(*d)) {
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printf(" query_message_length: %lu\n", dnstap_message_query_message_length(*d));
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printf(" query_message: %s\n", printable_string(dnstap_message_query_message(*d), dnstap_message_query_message_length(*d)));
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}
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if (dnstap_message_has_response_message(*d)) {
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printf(" response_message_length: %lu\n", dnstap_message_response_message_length(*d));
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printf(" response_message: %s\n", printable_string(dnstap_message_response_message(*d), dnstap_message_response_message_length(*d)));
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}
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}
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printf("----\n");
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}
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