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Add option to allow wildcard as start of topdomain

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This commit is contained in:
Erik Ekman 2021-08-24 23:32:57 +02:00
parent f09dadb1ed
commit 589027568b
5 changed files with 71 additions and 25 deletions
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14
src/common.c
View file

@ -332,7 +332,7 @@ read_password(char *buf, size_t len)
}
int
check_topdomain(char *str, char **errormsg)
check_topdomain(char *str, int allow_wildcard, char **errormsg)
{
int i;
int dots = 0;
@ -370,6 +370,18 @@ check_topdomain(char *str, char **errormsg)
if ((str[i] >= 'a' && str[i] <= 'z') || (str[i] >= 'A' && str[i] <= 'Z') ||
isdigit(str[i]) || str[i] == '-' || str[i] == '.') {
continue;
} else if (allow_wildcard && str[i] == '*') {
/* First char allowed to be wildcard, if followed by dot */
if (i == 0) {
if (str[i+1] == '.') {
continue;
}
if (errormsg) *errormsg = "Wildcard (*) must be followed by dot";
return 1;
} else {
if (errormsg) *errormsg = "Wildcard (*) only allowed as first char";
return 1;
}
} else {
if (errormsg) *errormsg = "Contains illegal character (allowed: [a-zA-Z0-9-.])";
return 1;

2
src/common.h
View file

@ -126,7 +126,7 @@ void do_pidfile(char *);
void read_password(char*, size_t);
int check_topdomain(char *, char **);
int check_topdomain(char *, int, char **);
#if defined(WINDOWS32) || defined(ANDROID)
#ifndef ANDROID

2
src/iodine.c
View file

@ -317,7 +317,7 @@ int main(int argc, char **argv)
/* NOTREACHED */
}
if (check_topdomain(topdomain, &errormsg)) {
if (check_topdomain(topdomain, 0, &errormsg)) {
warnx("Invalid topdomain: %s", errormsg);
usage();
/* NOTREACHED */

2
src/iodined.c
View file

@ -2543,7 +2543,7 @@ main(int argc, char **argv)
}
topdomain = strdup(argv[1]);
if (check_topdomain(topdomain, &errormsg)) {
if (check_topdomain(topdomain, 0, &errormsg)) {
warnx("Invalid topdomain: %s", errormsg);
usage();
/* NOTREACHED */

76
tests/common.c
View file

@ -25,15 +25,18 @@ START_TEST(test_topdomain_ok)
{
char *error = NULL;
ck_assert(check_topdomain("foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com", &error) == 0);
ck_assert(check_topdomain("foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com", 0, &error) == 0);
ck_assert(error == NULL);
/* Allowing wildcard */
ck_assert(check_topdomain("foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com", 1, &error) == 0);
ck_assert(error == NULL);
/* Not allowed to start with dot */
ck_assert(check_topdomain(".foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com", &error));
ck_assert(check_topdomain(".foo.0123456789.qwertyuiop.asdfghjkl.zxcvbnm.com", 0, &error));
ck_assert_str_eq("Starts with a dot", error);
/* Test missing error msg ptr */
ck_assert(check_topdomain(".foo", NULL));
ck_assert(check_topdomain(".foo", 0, NULL));
}
END_TEST
@ -42,33 +45,33 @@ START_TEST(test_topdomain_length)
char *error;
/* Test empty and too short */
ck_assert(check_topdomain("", &error));
ck_assert(check_topdomain("", 0, &error));
ck_assert_str_eq("Too short (< 3)", error);
error = NULL;
ck_assert(check_topdomain("a", &error));
ck_assert(check_topdomain("a", 0, &error));
ck_assert_str_eq("Too short (< 3)", error);
error = NULL;
ck_assert(check_topdomain(".a", &error));
ck_assert(check_topdomain(".a", 0, &error));
ck_assert_str_eq("Too short (< 3)", error);
error = NULL;
ck_assert(check_topdomain("a.", &error));
ck_assert(check_topdomain("a.", 0, &error));
ck_assert_str_eq("Too short (< 3)", error);
error = NULL;
ck_assert(check_topdomain("ab", &error));
ck_assert(check_topdomain("ab", 0, &error));
ck_assert_str_eq("Too short (< 3)", error);
error = NULL;
ck_assert(check_topdomain("a.b", &error) == 0);
ck_assert(check_topdomain("a.b", 0, &error) == 0);
/* Test too long (over 128, need rest of space for data) */
ck_assert(check_topdomain(
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.foo129xxx", &error));
"abcd12345.abcd12345.foo129xxx", 0, &error));
ck_assert_str_eq("Too long (> 128)", error);
ck_assert(check_topdomain(
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.abcd12345.abcd12345.abcd12345."
"abcd12345.abcd12345.foo128xx", &error) == 0);
"abcd12345.abcd12345.foo128xx", 0, &error) == 0);
}
END_TEST
@ -77,39 +80,69 @@ START_TEST(test_topdomain_chunks)
char *error;
/* Must have at least one dot */
ck_assert(check_topdomain("abcde.gh", &error) == 0);
ck_assert(check_topdomain("abcdefgh", &error));
ck_assert(check_topdomain("abcde.gh", 0, &error) == 0);
ck_assert(check_topdomain("abcdefgh", 0, &error));
ck_assert_str_eq("No dots", error);
/* Not two consecutive dots */
ck_assert(check_topdomain("abc..defgh", &error));
ck_assert(check_topdomain("abc..defgh", 0, &error));
ck_assert_str_eq("Consecutive dots", error);
/* Not end with a dots */
ck_assert(check_topdomain("abc.defgh.", &error));
ck_assert(check_topdomain("abc.defgh.", 0, &error));
ck_assert_str_eq("Ends with a dot", error);
/* No chunk longer than 63 chars */
ck_assert(check_topdomain("123456789012345678901234567890"
"123456789012345678901234567890333.com", &error) == 0);
"123456789012345678901234567890333.com", 0, &error) == 0);
ck_assert(check_topdomain("123456789012345678901234567890"
"1234567890123456789012345678904444.com", &error));
"1234567890123456789012345678904444.com", 0, &error));
ck_assert_str_eq("Too long domain part (> 63)", error);
ck_assert(check_topdomain("abc.123456789012345678901234567890"
"123456789012345678901234567890333.com", &error) == 0);
"123456789012345678901234567890333.com", 0, &error) == 0);
ck_assert(check_topdomain("abc.123456789012345678901234567890"
"1234567890123456789012345678904444.com", &error));
"1234567890123456789012345678904444.com", 0, &error));
ck_assert_str_eq("Too long domain part (> 63)", error);
ck_assert(check_topdomain("abc.123456789012345678901234567890"
"123456789012345678901234567890333", &error) == 0);
"123456789012345678901234567890333", 0, &error) == 0);
ck_assert(check_topdomain("abc.123456789012345678901234567890"
"1234567890123456789012345678904444", &error));
"1234567890123456789012345678904444", 0, &error));
ck_assert_str_eq("Too long domain part (> 63)", error);
}
END_TEST
START_TEST(test_topdomain_wild)
{
char *error = NULL;
ck_assert(check_topdomain("*.a", 0, &error) == 1);
ck_assert_str_eq("Contains illegal character (allowed: [a-zA-Z0-9-.])", error);
error = NULL;
ck_assert(check_topdomain("*.a", 1, &error) == 0);
ck_assert(error == NULL);
ck_assert(check_topdomain("b*.a", 0, &error) == 1);
ck_assert_str_eq("Contains illegal character (allowed: [a-zA-Z0-9-.])", error);
error = NULL;
ck_assert(check_topdomain("b*.a", 1, &error) == 1);
ck_assert_str_eq("Wildcard (*) only allowed as first char", error);
ck_assert(check_topdomain("*b.a", 0, &error) == 1);
ck_assert_str_eq("Contains illegal character (allowed: [a-zA-Z0-9-.])", error);
error = NULL;
ck_assert(check_topdomain("*b.a", 1, &error) == 1);
ck_assert_str_eq("Wildcard (*) must be followed by dot", error);
ck_assert(check_topdomain("*.*.a", 0, &error) == 1);
ck_assert_str_eq("Contains illegal character (allowed: [a-zA-Z0-9-.])", error);
error = NULL;
ck_assert(check_topdomain("*.*.a", 1, &error) == 1);
ck_assert_str_eq("Wildcard (*) only allowed as first char", error);
}
END_TEST
START_TEST(test_parse_format_ipv4)
{
char *host = "192.168.2.10";
@ -211,6 +244,7 @@ test_common_create_tests()
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_topdomain_wild);
tcase_add_test(tc, test_parse_format_ipv4);
tcase_add_test(tc, test_parse_format_ipv4_listen_all);