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gpg: Change calling convention for a function in getkey.c
* g10/getkey.c (merge_selfsigs): Remove arg CTX. Add args REQ_USAGE and WANT_EXACT. (finish_lookup): Adjust caller. Set LOOKUP_NOT_SELECTED here... (lookup): and not here. Signed-off-by: Werner Koch <wk@gnupg.org>
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g10/getkey.c
77
g10/getkey.c
@ -3053,31 +3053,33 @@ merge_selfsigs (KBNODE keyblock)
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/* See whether the key satisfies any additional requirements specified
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* in CTX. If so, return 1 and set CTX->FOUND_KEY to an appropriate
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* key or subkey. Otherwise, return 0 if there was no appropriate
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* key.
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* in CTX. If so, return the node of an appropriate key or subkey.
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* Otherwise, return NULL if there was no appropriate key.
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*
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* In case the primary key is not required, select a suitable subkey.
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* We need the primary key if PUBKEY_USAGE_CERT is set in
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* CTX->REQ_USAGE or we are in PGP6 or PGP7 mode and PUBKEY_USAGE_SIG
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* is set in CTX->REQ_USAGE.
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* We need the primary key if PUBKEY_USAGE_CERT is set in REQ_USAGE or
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* we are in PGP6 or PGP7 mode and PUBKEY_USAGE_SIG is set in
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* REQ_USAGE.
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*
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* If any of PUBKEY_USAGE_SIG, PUBKEY_USAGE_ENC and PUBKEY_USAGE_CERT
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* are set in CTX->REQ_USAGE, we filter by the key's function.
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* Concretely, if PUBKEY_USAGE_SIG and PUBKEY_USAGE_CERT are set, then
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* we only return a key if it is (at least) either a signing or a
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* are set in REQ_USAGE, we filter by the key's function. Concretely,
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* if PUBKEY_USAGE_SIG and PUBKEY_USAGE_CERT are set, then we only
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* return a key if it is (at least) either a signing or a
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* certification key.
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*
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* If CTX->REQ_USAGE is set, then we reject any keys that are not good
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* If REQ_USAGE is set, then we reject any keys that are not good
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* (i.e., valid, not revoked, not expired, etc.). This allows the
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* getkey functions to be used for plain key listings.
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*
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* Sets the matched key's user id field (pk->user_id) to the user id
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* that matched the low-level search criteria or NULL. If R_FLAGS is
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* not NULL set certain flags for more detailed error reporting. Used
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* flags are:
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* that matched the low-level search criteria or NULL.
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*
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* If R_FLAGS is not NULL set certain flags for more detailed error
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* reporting. Used flags are:
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*
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* - LOOKUP_ALL_SUBKEYS_EXPIRED :: All Subkeys are expired or have
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* been revoked.
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* - LOOKUP_NOT_SELECTED :: No suitable key found
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*
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* This function needs to handle several different cases:
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*
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@ -3094,40 +3096,41 @@ merge_selfsigs (KBNODE keyblock)
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*
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*/
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static kbnode_t
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finish_lookup (getkey_ctx_t ctx, kbnode_t keyblock, unsigned int *r_flags)
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finish_lookup (kbnode_t keyblock, unsigned int req_usage, int want_exact,
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unsigned int *r_flags)
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{
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kbnode_t k;
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/* If CTX->EXACT is set, the key or subkey that actually matched the
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/* If WANT_EXACT is set, the key or subkey that actually matched the
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low-level search criteria. */
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kbnode_t foundk = NULL;
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/* The user id (if any) that matched the low-level search criteria. */
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PKT_user_id *foundu = NULL;
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#define USAGE_MASK (PUBKEY_USAGE_SIG|PUBKEY_USAGE_ENC|PUBKEY_USAGE_CERT)
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unsigned int req_usage = (ctx->req_usage & USAGE_MASK);
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/* Request the primary if we're certifying another key, and also
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if signing data while --pgp6 or --pgp7 is on since pgp 6 and 7
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do not understand signatures made by a signing subkey. PGP 8
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does. */
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int req_prim = ((ctx->req_usage & PUBKEY_USAGE_CERT)
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|| ((PGP6 || PGP7) && (ctx->req_usage & PUBKEY_USAGE_SIG)));
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u32 curtime = make_timestamp ();
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u32 latest_date;
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kbnode_t latest_key;
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PKT_public_key *pk;
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log_assert (keyblock->pkt->pkttype == PKT_PUBLIC_KEY);
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int req_prim;
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u32 curtime = make_timestamp ();
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if (r_flags)
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*r_flags = 0;
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#define USAGE_MASK (PUBKEY_USAGE_SIG|PUBKEY_USAGE_ENC|PUBKEY_USAGE_CERT)
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req_usage &= USAGE_MASK;
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/* Request the primary if we're certifying another key, and also if
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* signing data while --pgp6 or --pgp7 is on since pgp 6 and 7 do
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* not understand signatures made by a signing subkey. PGP 8 does. */
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req_prim = ((req_usage & PUBKEY_USAGE_CERT)
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|| ((PGP6 || PGP7) && (req_usage & PUBKEY_USAGE_SIG)));
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log_assert (keyblock->pkt->pkttype == PKT_PUBLIC_KEY);
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/* For an exact match mark the primary or subkey that matched the
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low-level search criteria. */
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if (ctx->exact)
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if (want_exact)
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{
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for (k = keyblock; k; k = k->next)
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{
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@ -3262,7 +3265,7 @@ finish_lookup (getkey_ctx_t ctx, kbnode_t keyblock, unsigned int *r_flags)
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* primary key, or,
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*
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* - we're just considering the primary key. */
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if ((!latest_key && !ctx->exact) || foundk == keyblock || req_prim)
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if ((!latest_key && !want_exact) || foundk == keyblock || req_prim)
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{
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if (DBG_LOOKUP && !foundk && !req_prim)
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log_debug ("\tno suitable subkeys found - trying primary\n");
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@ -3300,10 +3303,12 @@ finish_lookup (getkey_ctx_t ctx, kbnode_t keyblock, unsigned int *r_flags)
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{
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if (DBG_LOOKUP)
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log_debug ("\tno suitable key found - giving up\n");
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if (r_flags)
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*r_flags |= LOOKUP_NOT_SELECTED;
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return NULL; /* Not found. */
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}
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found:
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found:
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if (DBG_LOOKUP)
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log_debug ("\tusing key %08lX\n",
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(ulong) keyid_from_pk (latest_key->pkt->pkt.public_key, NULL));
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@ -3408,12 +3413,10 @@ lookup (getkey_ctx_t ctx, kbnode_t *ret_keyblock, kbnode_t *ret_found_key,
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goto skip; /* No secret key available. */
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/* Warning: node flag bits 0 and 1 should be preserved by
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* merge_selfsigs. For secret keys, premerge transferred the
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* keys to the keyblock. */
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* merge_selfsigs. */
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merge_selfsigs (keyblock);
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found_key = finish_lookup (ctx, keyblock, &infoflags);
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if (!found_key)
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infoflags |= LOOKUP_NOT_SELECTED;
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found_key = finish_lookup (keyblock, ctx->req_usage, ctx->exact,
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&infoflags);
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print_status_key_considered (keyblock, infoflags);
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if (found_key)
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{
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