[PATCH v2 6/9] gpg-interface: do not hardcode the key string len anymore

[Henning Schild <henning.schild@siemens.com>]

gnupg does print the keyid followed by a space and the signer comes
next. The same pattern is also used in gpgsm, but there the key length
would be 40 instead of 16. Instead of hardcoding the expected length,
find the first space and calculate it.

Signed-off-by: Henning Schild <henning.schild@siemens.com>
---
 gpg-interface.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gpg-interface.c b/gpg-interface.c
index 0a8d1bff3..ac2df498d 100644
--- a/gpg-interface.c
+++ b/gpg-interface.c
@@ -88,10 +88,11 @@ static void parse_gpg_output(struct signature_check *sigc)
 		sigc->result = sigcheck_gpg_status[i].result;
 		/* The trust messages are not followed by key/signer information */
 		if (sigc->result != 'U') {
-			sigc->key = xmemdupz(found, 16);
+			next = strchrnul(found, ' ');
+			sigc->key = xmemdupz(found, next - found);
 			/* The ERRSIG message is not followed by signer information */
 			if (sigc-> result != 'E') {
-				found += 17;
+				found = next + 1;
 				next = strchrnul(found, '\n');
 				sigc->signer = xmemdupz(found, next - found);
 			}
-- 
2.16.4