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common: New function to validate domain names.

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* common/mbox-util.c (is_valid_domain_name): New.
* common/t-mbox-util.c (run_dns_test): New test.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2018-07-27 11:56:06 +02:00
parent 967d3649d2
commit ddee9f9409
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GPG key ID: E3FDFF218E45B72B
3 changed files with 93 additions and 2 deletions
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55
common/t-mbox-util.c
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@ -33,7 +33,7 @@
static void
run_test (void)
run_mbox_test (void)
{
static struct
{
@ -93,13 +93,64 @@ run_test (void)
}
static void
run_dns_test (void)
{
static struct
{
const char *name;
int valid;
} testtbl[] =
{
{ "", 0 },
{ ".", 0 },
{ "-", 0 },
{ "a", 1 },
{ "ab", 1 },
{ "a.b", 1 },
{ "a.b.", 1 },
{ ".a.b.", 0 },
{ ".a.b", 0 },
{ "-a.b", 0 },
{ "a-.b", 0 },
{ "a.-b", 0 },
{ "a.b-", 0 },
{ "a.b-.", 0 },
{ "a..b", 0 },
{ "ab.c", 1 },
{ "a-b.c", 1 },
{ "a-b-.c", 0 },
{ "-a-b.c", 0 },
{ "example.org", 1 },
{ "x.example.org", 1 },
{ "xy.example.org", 1 },
{ "Xy.example.org", 1 },
{ "-Xy.example.org", 0 },
{ "Xy.example-.org", 0 },
{ "foo.example.org..", 0 },
{ "foo.example.org.", 1 },
{ ".foo.example.org.", 0 },
{ "..foo.example.org.", 0 },
{ NULL, 0 }
};
int idx;
for (idx=0; testtbl[idx].name; idx++)
{
if (is_valid_domain_name (testtbl[idx].name) != testtbl[idx].valid)
fail (idx);
}
}
int
main (int argc, char **argv)
{
(void)argc;
(void)argv;
run_test ();
run_mbox_test ();
run_dns_test ();
return 0;
}