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Made dns_get_id return unsigned short, added test cases

This commit is contained in:
Erik Ekman 2009-02-09 20:44:08 +00:00
parent e3804cdbca
commit b3603abf2e
6 changed files with 55 additions and 19 deletions
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2
src/dns.c
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@ -183,7 +183,7 @@ dns_encode_ns_response(char *buf, size_t buflen, struct query *q, char *topdomai
return len; return len;
} }
short unsigned short
dns_get_id(char *packet, size_t packetlen) dns_get_id(char *packet, size_t packetlen)
{ {
HEADER *header; HEADER *header;

2
src/dns.h
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@ -26,7 +26,7 @@ typedef enum {
int dns_encode(char *, size_t, struct query *, qr_t, char *, size_t); int dns_encode(char *, size_t, struct query *, qr_t, char *, size_t);
int dns_encode_ns_response(char *buf, size_t buflen, struct query *q, char *topdomain); int dns_encode_ns_response(char *buf, size_t buflen, struct query *q, char *topdomain);
short dns_get_id(char *packet, size_t packetlen); unsigned short dns_get_id(char *packet, size_t packetlen);
int dns_decode(char *, size_t, struct query *, qr_t, char *, size_t); int dns_decode(char *, size_t, struct query *, qr_t, char *, size_t);
#endif /* _DNS_H_ */ #endif /* _DNS_H_ */

2
src/fw_query.c
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@ -35,7 +35,7 @@ void fw_query_put(struct fw_query *fw_query)
fwq_ix = 0; fwq_ix = 0;
} }
void fw_query_get(short query_id, struct fw_query **fw_query) void fw_query_get(unsigned short query_id, struct fw_query **fw_query)
{ {
int i; int i;

4
src/fw_query.h
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@ -30,12 +30,12 @@
struct fw_query { struct fw_query {
struct sockaddr addr; struct sockaddr addr;
int addrlen; int addrlen;
short id; unsigned short id;
}; };
void fw_query_init(); void fw_query_init();
void fw_query_put(struct fw_query *fw_query); void fw_query_put(struct fw_query *fw_query);
void fw_query_get(short query_id, struct fw_query **fw_query); void fw_query_get(unsigned short query_id, struct fw_query **fw_query);
#endif /*__FW_QUERY_H__*/ #endif /*__FW_QUERY_H__*/

2
src/iodined.c
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@ -625,7 +625,7 @@ tunnel_bind(int bind_fd, int dns_fd)
struct sockaddr_in from; struct sockaddr_in from;
socklen_t fromlen; socklen_t fromlen;
struct fw_query *query; struct fw_query *query;
short id; unsigned short id;
int r; int r;
fromlen = sizeof(struct sockaddr); fromlen = sizeof(struct sockaddr);

62
tests/dns.c
View File

@ -33,14 +33,14 @@
static void dump_packet(char *, size_t); static void dump_packet(char *, size_t);
static char queryPacket[] = static char query_packet[] =
"\x05\x39\x01\x00\x00\x01\x00\x00\x00\x00\x00\x01\x2D\x41\x6A\x62\x63" "\x05\x39\x01\x00\x00\x01\x00\x00\x00\x00\x00\x01\x2D\x41\x6A\x62\x63"
"\x75\x79\x74\x63\x70\x65\x62\x30\x67\x71\x30\x6C\x74\x65\x62\x75\x78" "\x75\x79\x74\x63\x70\x65\x62\x30\x67\x71\x30\x6C\x74\x65\x62\x75\x78"
"\x67\x69\x64\x75\x6E\x62\x73\x73\x61\x33\x64\x66\x6F\x6E\x30\x63\x61" "\x67\x69\x64\x75\x6E\x62\x73\x73\x61\x33\x64\x66\x6F\x6E\x30\x63\x61"
"\x7A\x64\x62\x6F\x72\x71\x71\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00" "\x7A\x64\x62\x6F\x72\x71\x71\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00"
"\x0A\x00\x01\x00\x00\x29\x10\x00\x00\x00\x80\x00\x00\x00"; "\x0A\x00\x01\x00\x00\x29\x10\x00\x00\x00\x80\x00\x00\x00";
static char answerPacket[] = static char answer_packet[] =
"\x05\x39\x84\x00\x00\x01\x00\x01\x00\x00\x00\x00\x05\x73\x69\x6C\x6C" "\x05\x39\x84\x00\x00\x01\x00\x01\x00\x00\x00\x00\x05\x73\x69\x6C\x6C"
"\x79\x04\x68\x6F\x73\x74\x02\x6F\x66\x06\x69\x6F\x64\x69\x6E\x65\x04" "\x79\x04\x68\x6F\x73\x74\x02\x6F\x66\x06\x69\x6F\x64\x69\x6E\x65\x04"
"\x63\x6F\x64\x65\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00\x0A\x00\x01" "\x63\x6F\x64\x65\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00\x0A\x00\x01"
@ -48,7 +48,7 @@ static char answerPacket[] =
"\x69\x73\x20\x74\x68\x65\x20\x6D\x65\x73\x73\x61\x67\x65\x20\x74\x6F" "\x69\x73\x20\x74\x68\x65\x20\x6D\x65\x73\x73\x61\x67\x65\x20\x74\x6F"
"\x20\x62\x65\x20\x64\x65\x6C\x69\x76\x65\x72\x65\x64"; "\x20\x62\x65\x20\x64\x65\x6C\x69\x76\x65\x72\x65\x64";
static char answerPacketHighTransId[] = static char answer_packet_high_trans_id[] =
"\x85\x39\x84\x00\x00\x01\x00\x01\x00\x00\x00\x00\x05\x73\x69\x6C\x6C" "\x85\x39\x84\x00\x00\x01\x00\x01\x00\x00\x00\x00\x05\x73\x69\x6C\x6C"
"\x79\x04\x68\x6F\x73\x74\x02\x6F\x66\x06\x69\x6F\x64\x69\x6E\x65\x04" "\x79\x04\x68\x6F\x73\x74\x02\x6F\x66\x06\x69\x6F\x64\x69\x6E\x65\x04"
"\x63\x6F\x64\x65\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00\x0A\x00\x01" "\x63\x6F\x64\x65\x04\x6B\x72\x79\x6F\x02\x73\x65\x00\x00\x0A\x00\x01"
@ -87,14 +87,14 @@ START_TEST(test_encode_query)
} }
strcpy(d, topdomain); strcpy(d, topdomain);
ret = dns_encode(buf, len, &q, QR_QUERY, resolv, strlen(resolv)); ret = dns_encode(buf, len, &q, QR_QUERY, resolv, strlen(resolv));
len = sizeof(queryPacket) - 1; /* Skip extra null character */ len = sizeof(query_packet) - 1; /* Skip extra null character */
if (strncmp(queryPacket, buf, sizeof(queryPacket)) || ret != len) { if (strncmp(query_packet, buf, sizeof(query_packet)) || ret != len) {
printf("\n"); printf("\n");
dump_packet(queryPacket, len); dump_packet(query_packet, len);
dump_packet(buf, ret); dump_packet(buf, ret);
} }
fail_unless(strncmp(queryPacket, buf, sizeof(queryPacket)) == 0, "Did not compile expected packet"); fail_unless(strncmp(query_packet, buf, sizeof(query_packet)) == 0, "Did not compile expected packet");
fail_unless(ret == len, "Bad packet length: %d, expected %d", ret, len); fail_unless(ret == len, "Bad packet length: %d, expected %d", ret, len);
} }
END_TEST END_TEST
@ -110,10 +110,10 @@ START_TEST(test_decode_query)
memset(&q, 0, sizeof(struct query)); memset(&q, 0, sizeof(struct query));
memset(&buf, 0, sizeof(buf)); memset(&buf, 0, sizeof(buf));
q.id = 0; q.id = 0;
len = sizeof(queryPacket) - 1; len = sizeof(query_packet) - 1;
enc = get_base32_encoder(); enc = get_base32_encoder();
dns_decode(buf, sizeof(buf), &q, QR_QUERY, queryPacket, len); dns_decode(buf, sizeof(buf), &q, QR_QUERY, query_packet, len);
domain = strstr(q.name, topdomain); domain = strstr(q.name, topdomain);
len = sizeof(buf); len = sizeof(buf);
unpack_data(buf, len, &(q.name[1]), (int) (domain - q.name) - 1, enc); unpack_data(buf, len, &(q.name[1]), (int) (domain - q.name) - 1, enc);
@ -139,9 +139,9 @@ START_TEST(test_encode_response)
q.id = 1337; q.id = 1337;
ret = dns_encode(buf, len, &q, QR_ANSWER, msgData, strlen(msgData)); ret = dns_encode(buf, len, &q, QR_ANSWER, msgData, strlen(msgData));
len = sizeof(answerPacket) - 1; /* Skip extra null character */ len = sizeof(answer_packet) - 1; /* Skip extra null character */
fail_unless(strncmp(answerPacket, buf, sizeof(answerPacket)) == 0, "Did not compile expected packet"); fail_unless(strncmp(answer_packet, buf, sizeof(answer_packet)) == 0, "Did not compile expected packet");
fail_unless(ret == len, "Bad packet length: %d, expected %d", ret, len); fail_unless(ret == len, "Bad packet length: %d, expected %d", ret, len);
} }
END_TEST END_TEST
@ -156,7 +156,7 @@ START_TEST(test_decode_response)
len = sizeof(buf); len = sizeof(buf);
memset(&buf, 0, sizeof(buf)); memset(&buf, 0, sizeof(buf));
ret = dns_decode(buf, len, &q, QR_ANSWER, answerPacket, sizeof(answerPacket)-1); ret = dns_decode(buf, len, &q, QR_ANSWER, answer_packet, sizeof(answer_packet)-1);
fail_unless(strncmp(msgData, buf, sizeof(msgData)) == 0, "Did not extract expected data"); fail_unless(strncmp(msgData, buf, sizeof(msgData)) == 0, "Did not extract expected data");
fail_unless(ret == strlen(msgData), "Bad data length: %d, expected %d", ret, strlen(msgData)); fail_unless(ret == strlen(msgData), "Bad data length: %d, expected %d", ret, strlen(msgData));
fail_unless(q.id == 0x0539); fail_unless(q.id == 0x0539);
@ -173,12 +173,45 @@ START_TEST(test_decode_response_with_high_trans_id)
len = sizeof(buf); len = sizeof(buf);
memset(&buf, 0, sizeof(buf)); memset(&buf, 0, sizeof(buf));
ret = dns_decode(buf, len, &q, QR_ANSWER, answerPacketHighTransId, sizeof(answerPacketHighTransId)-1); ret = dns_decode(buf, len, &q, QR_ANSWER, answer_packet_high_trans_id, sizeof(answer_packet_high_trans_id)-1);
fail_unless(strncmp(msgData, buf, sizeof(msgData)) == 0, "Did not extract expected data"); fail_unless(strncmp(msgData, buf, sizeof(msgData)) == 0, "Did not extract expected data");
fail_unless(ret == strlen(msgData), "Bad data length: %d, expected %d", ret, strlen(msgData)); fail_unless(ret == strlen(msgData), "Bad data length: %d, expected %d", ret, strlen(msgData));
fail_unless(q.id == 0x8539, "q.id was %08X instead of %08X!", q.id, 0x8539); fail_unless(q.id == 0x8539, "q.id was %08X instead of %08X!", q.id, 0x8539);
} }
END_TEST END_TEST
START_TEST(test_get_id_short_packet)
{
char buf[5];
int len;
unsigned short id;
len = sizeof(buf);
memset(&buf, 5, sizeof(buf));
id = dns_get_id(buf, len);
fail_unless(id == 0);
}
END_TEST
START_TEST(test_get_id_low)
{
unsigned short id;
id = dns_get_id(answer_packet, sizeof(answer_packet));
fail_unless(id == 1337);
}
END_TEST
START_TEST(test_get_id_high)
{
unsigned short id;
id = dns_get_id(answer_packet_high_trans_id, sizeof(answer_packet_high_trans_id));
fail_unless(id == 0x8539);
}
END_TEST
static void static void
dump_packet(char *buf, size_t len) dump_packet(char *buf, size_t len)
{ {
@ -209,6 +242,9 @@ test_dns_create_tests()
tcase_add_test(tc, test_encode_response); tcase_add_test(tc, test_encode_response);
tcase_add_test(tc, test_decode_response); tcase_add_test(tc, test_decode_response);
tcase_add_test(tc, test_decode_response_with_high_trans_id); tcase_add_test(tc, test_decode_response_with_high_trans_id);
tcase_add_test(tc, test_get_id_short_packet);
tcase_add_test(tc, test_get_id_low);
tcase_add_test(tc, test_get_id_high);
return tc; return tc;
} }