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agent: Add known keys to sshcontrol.

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* agent/command-ssh.c (ssh_identity_register): Add a key to sshcontrol
even if it is already in the private key store.
* tests/openpgp/ssh.scm: Test this.

GnuPG-bug-id: 2316
Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-07-19 16:48:38 +02:00
parent d7a405de83
commit 270f7f7b8b
2 changed files with 21 additions and 7 deletions
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16
agent/command-ssh.c
View File

@ -3152,8 +3152,8 @@ reenter_compare_cb (struct pin_entry_info_s *pi)
/* Store the ssh KEY into our local key storage and protect it after
asking for a passphrase. Cache that passphrase. TTL is the
maximum caching time for that key. If the key already exists in
our key storage, don't do anything. When entering a new key also
add an entry to the sshcontrol file. */
our key storage, don't do anything. When entering a key also add
an entry to the sshcontrol file. */
static gpg_error_t
ssh_identity_register (ctrl_t ctrl, ssh_key_type_spec_t *spec,
gcry_sexp_t key, int ttl, int confirm)
@ -3175,15 +3175,17 @@ ssh_identity_register (ctrl_t ctrl, ssh_key_type_spec_t *spec,
if (err)
goto out;
/* Check whether the key is already in our key storage. Don't do
anything then. */
if ( !agent_key_available (key_grip_raw) )
goto out; /* Yes, key is available. */
bin2hex (key_grip_raw, 20, key_grip);
err = ssh_get_fingerprint_string (key, &key_fpr);
if (err)
goto out;
/* Check whether the key is already in our key storage. Don't do
anything then besides (re-)adding it to sshcontrol. */
if ( !agent_key_available (key_grip_raw) )
goto key_exists; /* Yes, key is available. */
err = ssh_key_extract_comment (key, &comment);
if (err)
goto out;
@ -3249,11 +3251,11 @@ ssh_identity_register (ctrl_t ctrl, ssh_key_type_spec_t *spec,
goto out;
/* Cache this passphrase. */
bin2hex (key_grip_raw, 20, key_grip);
err = agent_put_cache (key_grip, CACHE_MODE_SSH, pi->pin, ttl);
if (err)
goto out;
key_exists:
/* And add an entry to the sshcontrol file. */
err = add_control_entry (ctrl, spec, key_grip, key_fpr, ttl, confirm);

12
tests/openpgp/ssh.scm
View File

@ -50,3 +50,15 @@
(unless (string-contains? (call-popen `(,SSH-ADD -l "-E" md5) "") hash)
(error "key not added"))))
car keys)
(info "Checking for issue2316...")
(unlink (string-append GNUPGHOME "/sshcontrol"))
(pipe:do
(pipe:open (path-join (in-srcdir "samplekeys")
(string-append "ssh-rsa.key"))
(logior O_RDONLY O_BINARY))
(pipe:spawn `(,SSH-ADD -)))
(unless
(string-contains? (call-popen `(,SSH-ADD -l "-E" md5) "")
"MD5:c9:85:b5:55:00:84:a9:82:5a:df:d6:62:1b:5a:28:22")
(error "known private key not (re-)added to sshcontrol"))