iodine/tests/read.c

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/*
* Copyright (c) 2006 Bjorn Andersson <flex@kryo.se>, Erik Ekman <yarrick@kryo.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/stat.h>
#include <arpa/nameser.h>
#ifdef DARWIN
#include <arpa/nameser8_compat.h>
#endif
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <check.h>
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#include "common.h"
#include "encoding.h"
#include "dns.h"
#include "read.h"
#include "test.h"
START_TEST(test_read_putshort)
{
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unsigned short k;
unsigned short l;
char* p;
int i;
for (i = 0; i < 65536; i++) {
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p = (char*)&k;
putshort(&p, i);
fail_unless(ntohs(k) == i,
va_str("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, (short *) &l);
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fail_unless(l == i,
va_str("Bad value on readshort for %d: %d != %d",
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i, l, i));
}
}
END_TEST
START_TEST(test_read_putlong)
{
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uint32_t k;
uint32_t l;
char* p;
int i;
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int j;
for (i = 0; i < 32; i++) {
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p = (char*)&k;
j = 0xf << i;
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putlong(&p, j);
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fail_unless(ntohl(k) == j,
va_str("Bad value on putlong for %d: %d != %d", i, ntohl(j), j));
p = (char*)&k;
readlong(NULL, &p, &l);
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fail_unless(l == j,
va_str("Bad value on readlong for %d: %d != %d", i, l, j));
}
}
END_TEST
START_TEST(test_read_name)
{
char emptyloop[] = {
'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc0, 0x0c, 0x00, 0x01, 0x00, 0x01 };
char infloop[] = {
'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 'A', 0xc0, 0x0c, 0x00, 0x01, 0x00, 0x01 };
char longname[] =
"AA\x81\x80\x00\x01\x00\x00\x00\x00\x00\x00"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x3FzBCDEFGHIJKLMNOPQURSTUVXYZ0123456789abcdefghijklmnopqrstuvxyzAA"
"\x00\x00\x01\x00\x01";
char onejump[] =
"AA\x81\x80\x00\x01\x00\x00\x00\x00\x00\x00"
"\x02hh\xc0\x15\x00\x01\x00\x01\x05zBCDE\x00";
char badjump[] = {
'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xfe, 0xcc, 0x00, 0x01, 0x00, 0x01 };
char badjump2[] = {
'A', 'A', 0x81, 0x80, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 'B', 'A', 0xfe, 0xcc, 0x00, 0x01, 0x00, 0x01 };
char *jumper;
char buf[1024];
char *data;
int rv;
memset(buf, 0, sizeof(buf));
data = emptyloop + sizeof(HEADER);
buf[1023] = 'A';
rv = readname(emptyloop, sizeof(emptyloop), &data, buf, 1023);
fail_unless(buf[1023] == 'A', NULL);
memset(buf, 0, sizeof(buf));
data = infloop + sizeof(HEADER);
buf[4] = '\a';
rv = readname(infloop, sizeof(infloop), &data, buf, 4);
fail_unless(buf[4] == '\a', NULL);
memset(buf, 0, sizeof(buf));
data = longname + sizeof(HEADER);
buf[256] = '\a';
rv = readname(longname, sizeof(longname), &data, buf, 256);
fail_unless(buf[256] == '\a', NULL);
memset(buf, 0, sizeof(buf));
data = onejump + sizeof(HEADER);
rv = readname(onejump, sizeof(onejump), &data, buf, 256);
fail_unless(rv == 9, NULL);
// These two tests use malloc to cause segfault if jump is executed
memset(buf, 0, sizeof(buf));
jumper = malloc(sizeof(badjump));
if (jumper) {
memcpy(jumper, badjump, sizeof(badjump));
data = jumper + sizeof(HEADER);
rv = readname(jumper, sizeof(badjump), &data, buf, 256);
fail_unless(rv == 0, NULL);
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fail_unless(buf[0] == 0, NULL);
}
free(jumper);
memset(buf, 0, sizeof(buf));
jumper = malloc(sizeof(badjump2));
if (jumper) {
memcpy(jumper, badjump2, sizeof(badjump2));
data = jumper + sizeof(HEADER);
rv = readname(jumper, sizeof(badjump2), &data, buf, 256);
fail_unless(rv == 4, NULL);
fail_unless(strcmp("BA.", buf) == 0,
va_str("buf is not BA: %s", buf));
}
free(jumper);
}
END_TEST
TCase *
test_read_create_tests()
{
TCase *tc;
tc = tcase_create("Read");
tcase_set_timeout(tc, 60);
tcase_add_test(tc, test_read_putshort);
tcase_add_test(tc, test_read_putlong);
tcase_add_test(tc, test_read_name);
return tc;
}