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gpg: Minor restructuring of a function.

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--

This is for easier reading and future changing.

(cherry picked from commit d984de172c)
This commit is contained in:
Werner Koch 2021-04-12 17:50:17 +02:00
parent b8df8321e1
commit 79f5ffb1ad
No known key found for this signature in database
GPG key ID: E3FDFF218E45B72B
2 changed files with 49 additions and 41 deletions
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67
g10/getkey.c
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@ -3884,66 +3884,75 @@ lookup (ctrl_t ctrl, getkey_ctx_t ctx, int want_secret,
}
/* If a default key has been specified, return that key. If a card
* based key is also available as indicated by FPR_CARD not being
* NULL, return that key if suitable. */
gpg_error_t
get_seckey_default_or_card (ctrl_t ctrl, PKT_public_key *pk,
const byte *fpr_card, size_t fpr_len)
{
gpg_error_t err;
strlist_t namelist = NULL;
const char *def_secret_key;
const char *def_secret_key = parse_def_secret_key (ctrl);
def_secret_key = parse_def_secret_key (ctrl);
if (def_secret_key)
add_to_strlist (&namelist, def_secret_key);
else if (fpr_card)
{
int rc = get_pubkey_byfprint (ctrl, pk, NULL, fpr_card, fpr_len);
err = get_pubkey_byfprint (ctrl, pk, NULL, fpr_card, fpr_len);
/* The key on card can be not suitable for requested usage. */
if (rc == GPG_ERR_UNUSABLE_PUBKEY)
if (gpg_err_code (err) == GPG_ERR_UNUSABLE_PUBKEY)
fpr_card = NULL; /* Fallthrough as no card. */
else
return rc;
return err; /* Success or other error. */
}
if (!fpr_card
|| (def_secret_key && def_secret_key[strlen (def_secret_key)-1] == '!'))
err = key_byname (ctrl, NULL, namelist, pk, 1, 0, NULL, NULL);
if (!fpr_card || (def_secret_key && *def_secret_key
&& def_secret_key[strlen (def_secret_key)-1] == '!'))
{
err = key_byname (ctrl, NULL, namelist, pk, 1, 0, NULL, NULL);
}
else
{ /* Default key is specified and card key is also available. */
kbnode_t k, keyblock = NULL;
err = key_byname (ctrl, NULL, namelist, pk, 1, 0, &keyblock, NULL);
if (!err)
for (k = keyblock; k; k = k->next)
{
PKT_public_key *pk_candidate;
char fpr[MAX_FINGERPRINT_LEN];
if (err)
goto leave;
for (k = keyblock; k; k = k->next)
{
PKT_public_key *pk_candidate;
char fpr[MAX_FINGERPRINT_LEN];
if (k->pkt->pkttype != PKT_PUBLIC_KEY
&&k->pkt->pkttype != PKT_PUBLIC_SUBKEY)
continue;
if (k->pkt->pkttype != PKT_PUBLIC_KEY
&&k->pkt->pkttype != PKT_PUBLIC_SUBKEY)
continue;
pk_candidate = k->pkt->pkt.public_key;
if (!pk_candidate->flags.valid)
continue;
if (!((pk_candidate->pubkey_usage & USAGE_MASK) & pk->req_usage))
continue;
fingerprint_from_pk (pk_candidate, fpr, NULL);
if (!memcmp (fpr_card, fpr, fpr_len))
{
release_public_key_parts (pk);
copy_public_key (pk, pk_candidate);
break;
}
}
pk_candidate = k->pkt->pkt.public_key;
if (!pk_candidate->flags.valid)
continue;
if (!((pk_candidate->pubkey_usage & USAGE_MASK) & pk->req_usage))
continue;
fingerprint_from_pk (pk_candidate, fpr, NULL);
if (!memcmp (fpr_card, fpr, fpr_len))
{
release_public_key_parts (pk);
copy_public_key (pk, pk_candidate);
break;
}
}
release_kbnode (keyblock);
}
leave:
free_strlist (namelist);
return err;
}
/*********************************************
*********** User ID printing helpers *******