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Improve check of topdomain to use

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Add more checks and unit tests
This commit is contained in:
Erik Ekman 2014-05-30 00:18:45 +02:00
parent bacb69e4f0
commit 9bb2323f84
2 changed files with 88 additions and 10 deletions
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18
src/common.c
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@ -327,16 +327,32 @@ int
check_topdomain(char *str) check_topdomain(char *str)
{ {
int i; int i;
int dots = 0;
int chunklen = 0;
if(str[0] == '.') /* special case */ if (strlen(str) < 3)
return 1;
if (strlen(str) > 128)
return 1; return 1;
for( i = 0; i < strlen(str); i++) { for( i = 0; i < strlen(str); i++) {
if(str[i] == '.') {
dots++;
/* This will also catch the case where topdomain starts with a dot */
if (chunklen == 0 || chunklen > 63)
return 1;
chunklen = 0;
} else
chunklen++;
if( isalpha(str[i]) || isdigit(str[i]) || str[i] == '-' || str[i] == '.' ) if( isalpha(str[i]) || isdigit(str[i]) || str[i] == '-' || str[i] == '.' )
continue; continue;
else else
return 1; return 1;
} }
if (chunklen == 0 || chunklen > 63 || dots == 0)
return 1;
return 0; return 0;
} }

62
tests/common.c
View file

@ -4,6 +4,65 @@
#include <sys/socket.h> #include <sys/socket.h>
#include <netdb.h> #include <netdb.h>
START_TEST(test_topdomain_ok)
{
fail_if(check_topdomain("foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com"));
/* Not allowed to start with dot */
fail_unless(check_topdomain(".foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com"));
}
END_TEST
START_TEST(test_topdomain_length)
{
/* Test empty and too short */
fail_unless(check_topdomain(""));
fail_unless(check_topdomain("a"));
fail_unless(check_topdomain(".a"));
fail_unless(check_topdomain("a."));
fail_unless(check_topdomain("ab"));
fail_if(check_topdomain("a.b"));
/* Test too long (over 128, need rest of space for data) */
fail_unless(check_topdomain(
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.foo129xxx"));
fail_if(check_topdomain(
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.foo128xx"));
}
END_TEST
START_TEST(test_topdomain_chunks)
{
/* Must have at least one dot */
fail_if(check_topdomain("abcde.gh"));
fail_unless(check_topdomain("abcdefgh"));
/* Not two consecutive dots */
fail_unless(check_topdomain("abc..defgh"));
/* Not end with a dots */
fail_unless(check_topdomain("abc.defgh."));
/* No chunk longer than 63 chars */
fail_unless(check_topdomain("123456789012345678901234567890"
"1234567890123456789012345678904444.com"));
fail_if(check_topdomain("123456789012345678901234567890"
"123456789012345678901234567890333.com"));
fail_unless(check_topdomain("abc.123456789012345678901234567890"
"1234567890123456789012345678904444.com"));
fail_if(check_topdomain("abc.123456789012345678901234567890"
"123456789012345678901234567890333.com"));
fail_unless(check_topdomain("abc.123456789012345678901234567890"
"1234567890123456789012345678904444"));
fail_if(check_topdomain("abc.123456789012345678901234567890"
"123456789012345678901234567890333"));
}
END_TEST
START_TEST(test_parse_format_ipv4) START_TEST(test_parse_format_ipv4)
{ {
char *host = "192.168.2.10"; char *host = "192.168.2.10";
@ -102,6 +161,9 @@ test_common_create_tests()
int sock; int sock;
tc = tcase_create("Common"); tc = tcase_create("Common");
tcase_add_test(tc, test_topdomain_ok);
tcase_add_test(tc, test_topdomain_length);
tcase_add_test(tc, test_topdomain_chunks);
tcase_add_test(tc, test_parse_format_ipv4); tcase_add_test(tc, test_parse_format_ipv4);
tcase_add_test(tc, test_parse_format_ipv4_listen_all); tcase_add_test(tc, test_parse_format_ipv4_listen_all);