293 lines
7.1 KiB
C
293 lines
7.1 KiB
C
/*
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* Copyright (c) 2006-2014 Erik Ekman <yarrick@kryo.se>,
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* 2006-2009 Bjorn Andersson <flex@kryo.se>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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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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#include <sys/stat.h>
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#include <arpa/nameser.h>
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#ifdef DARWIN
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#define BIND_8_COMPAT
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#include <arpa/nameser_compat.h>
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#endif
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#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 <check.h>
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#include "common.h"
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#include "encoding.h"
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#include "dns.h"
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#include "read.h"
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#include "test.h"
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START_TEST(test_read_putshort)
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{
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unsigned short k;
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unsigned short l;
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char* p;
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int i;
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for (i = 0; i < 65536; i++) {
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p = (char*)&k;
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putshort(&p, i);
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ck_assert_msg(ntohs(k) == i,
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"Bad value on putshort for %d: %d != %d",
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i, ntohs(k), i);
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p = (char*)&k;
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readshort(NULL, &p, &l);
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ck_assert_msg(l == i,
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"Bad value on readshort for %d: %d != %d",
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i, l, i);
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}
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}
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END_TEST
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START_TEST(test_read_putlong)
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{
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uint32_t k;
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uint32_t l;
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char* p;
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int i;
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int j;
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for (i = 0; i < 32; i++) {
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p = (char*)&k;
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j = 0xf << i;
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putlong(&p, j);
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ck_assert_msg(ntohl(k) == j,
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"Bad value on putlong for %d: %d != %d", i, ntohl(j), j);
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p = (char*)&k;
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readlong(NULL, &p, &l);
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ck_assert_msg(l == j,
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"Bad value on readlong for %d: %d != %d", i, l, j);
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}
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}
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END_TEST
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START_TEST(test_read_name_empty_loop)
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{
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unsigned char emptyloop[] = {
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'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xc0, 0x0c, 0x00, 0x01, 0x00, 0x01 };
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char buf[1024];
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char *data;
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int rv;
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memset(buf, 0, sizeof(buf));
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data = (char*) emptyloop + sizeof(HEADER);
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buf[1023] = 'A';
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rv = readname((char *) emptyloop, sizeof(emptyloop), &data, buf, 1023);
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ck_assert(rv == 0);
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ck_assert(buf[1023] == 'A');
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}
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END_TEST
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START_TEST(test_read_name_inf_loop)
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{
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unsigned char infloop[] = {
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'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x01, 'A', 0xc0, 0x0c, 0x00, 0x01, 0x00, 0x01 };
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char buf[1024];
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char *data;
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int rv;
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memset(buf, 0, sizeof(buf));
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data = (char*) infloop + sizeof(HEADER);
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buf[4] = '\a';
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rv = readname((char*) infloop, sizeof(infloop), &data, buf, 4);
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ck_assert(rv == 3);
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ck_assert(buf[4] == '\a');
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}
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END_TEST
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START_TEST(test_read_name_longname)
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{
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unsigned char longname[] =
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"AA\x81\x80\x00\x01\x00\x00\x00\x00\x00\x00"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
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"\x00\x00\x01\x00\x01";
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char buf[1024];
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char *data;
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int rv;
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memset(buf, 0, sizeof(buf));
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data = (char*) longname + sizeof(HEADER);
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buf[256] = '\a';
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rv = readname((char*) longname, sizeof(longname), &data, buf, 256);
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ck_assert(rv == 256);
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ck_assert(buf[256] == '\a');
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}
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END_TEST
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START_TEST(test_read_name_onejump)
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{
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unsigned char onejump[] =
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"AA\x81\x80\x00\x01\x00\x00\x00\x00\x00\x00"
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"\x02hh\xc0\x15\x00\x01\x00\x01\x05zBCDE\x00";
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char buf[1024];
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char *data;
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int rv;
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memset(buf, 0, sizeof(buf));
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data = (char*) onejump + sizeof(HEADER);
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rv = readname((char*) onejump, sizeof(onejump), &data, buf, 256);
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ck_assert(rv == 9);
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}
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END_TEST
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START_TEST(test_read_name_badjump_start)
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{
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unsigned char badjump[] = {
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'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0xfe, 0xcc, 0x00, 0x01, 0x00, 0x01 };
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unsigned char *jumper;
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char buf[1024];
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char *data;
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int rv;
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/* This test uses malloc to cause segfault if jump is executed */
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memset(buf, 0, sizeof(buf));
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jumper = malloc(sizeof(badjump));
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if (jumper) {
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memcpy(jumper, badjump, sizeof(badjump));
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data = (char*) jumper + sizeof(HEADER);
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rv = readname((char*) jumper, sizeof(badjump), &data, buf, 256);
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ck_assert(rv == 0);
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ck_assert(buf[0] == 0);
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}
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free(jumper);
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}
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END_TEST
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START_TEST(test_read_name_badjump_second)
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{
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unsigned char badjump2[] = {
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'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x02, 'B', 'A', 0xfe, 0xcc, 0x00, 0x01, 0x00, 0x01 };
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unsigned char *jumper;
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char buf[1024];
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char *data;
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int rv;
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/* This test uses malloc to cause segfault if jump is executed */
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memset(buf, 0, sizeof(buf));
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jumper = malloc(sizeof(badjump2));
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if (jumper) {
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memcpy(jumper, badjump2, sizeof(badjump2));
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data = (char*) jumper + sizeof(HEADER);
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rv = readname((char*) jumper, sizeof(badjump2), &data, buf, 256);
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ck_assert(rv == 4);
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ck_assert_str_eq("BA.", buf);
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}
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free(jumper);
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}
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END_TEST
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START_TEST(test_putname)
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{
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char out[] = "\x06" "BADGER\x06" "BADGER\x04" "KRYO\x02" "SE\x00";
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char buf[256];
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char *domain = "BADGER.BADGER.KRYO.SE";
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char *b;
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int ret;
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memset(buf, 0, 256);
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b = buf;
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ret = putname(&b, 256, domain);
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ck_assert(ret == strlen(domain) + 1);
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ck_assert_msg(strncmp(buf, out, ret) == 0, "Happy flow failed");
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}
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END_TEST
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START_TEST(test_putname_nodot)
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{
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char buf[256];
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char *nodot =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ"
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"ABCDEFGHIJKLMNOPQRSTUVWXYZABCDEFGHIJKLMNOPQRSTUVWXYZ";
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char *b;
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int ret;
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memset(buf, 0, 256);
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b = buf;
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ret = putname(&b, 256, nodot);
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ck_assert(ret == -1);
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ck_assert(b == buf);
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}
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END_TEST
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START_TEST(test_putname_toolong)
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{
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char buf[256];
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char *toolong =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ."
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ."
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ."
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ."
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ."
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ.ABCDEFGHIJKLMNOPQRSTUVWXYZ.";
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char *b;
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int ret;
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memset(buf, 0, 256);
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b = buf;
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ret = putname(&b, 256, toolong);
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ck_assert(ret == -1);
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ck_assert(b == buf);
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}
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END_TEST
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TCase *
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test_read_create_tests()
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{
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TCase *tc;
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tc = tcase_create("Read");
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tcase_set_timeout(tc, 60);
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tcase_add_test(tc, test_read_putshort);
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tcase_add_test(tc, test_read_putlong);
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tcase_add_test(tc, test_read_name_empty_loop);
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tcase_add_test(tc, test_read_name_inf_loop);
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tcase_add_test(tc, test_read_name_longname);
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tcase_add_test(tc, test_read_name_onejump);
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tcase_add_test(tc, test_read_name_badjump_start);
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tcase_add_test(tc, test_read_name_badjump_second);
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tcase_add_test(tc, test_putname);
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tcase_add_test(tc, test_putname_nodot);
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tcase_add_test(tc, test_putname_toolong);
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return tc;
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}
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