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gpg: Don't error out if a key occurs multiple times in the keyring.

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* g10/gpg.c (check_user_ids): Don't error out if a key occurs multiple
times in the keyring.  Instead, print a warning.  When printing out
fingerprint prints, use format_hexfingerprint to format them.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>
This commit is contained in:
Neal H. Walfield 2015-12-11 11:12:46 +01:00
parent d1a97585c5
commit 6dc37c5fb6
1 changed files with 82 additions and 32 deletions
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102
g10/gpg.c
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@ -2116,6 +2116,8 @@ check_user_ids (strlist_t *sp,
KEYDB_HANDLE hd = NULL;
char fingerprint_formatted[MAX_FORMATTED_FINGERPRINT_LEN + 1];
/* A quick check to avoid allocating a new strlist if we can skip
all keys. Handles also the case of !SP. See below for details. */
for (t = s; t && (!(t->flags & PK_LIST_CONFIG)
@ -2135,6 +2137,9 @@ check_user_ids (strlist_t *sp,
size_t fingerprint_bin_len = sizeof (fingerprint_bin);
/* We also potentially need a ! at the end. */
char fingerprint[2 * MAX_FINGERPRINT_LEN + 1 + 1];
int added = 0;
int dups = 0;
int ambiguous = 0;
/* If the key has been given on the command line and it has not
been given by one of the encrypt-to options, we skip the
@ -2271,14 +2276,18 @@ check_user_ids (strlist_t *sp,
i = strlen (fingerprint);
fingerprint[i] = '!';
fingerprint[i + 1] = '\0';
add_to_strlist (&s2, fingerprint);
added = 1;
}
else
{
/* We need the primary key's fingerprint to detect dups so
always format it. */
fingerprint_from_pk (pk, fingerprint_bin, &fingerprint_bin_len);
assert (fingerprint_bin_len == sizeof (fingerprint_bin));
bin2hex (fingerprint_bin, MAX_FINGERPRINT_LEN, fingerprint);
}
if (! added)
add_to_strlist (&s2, fingerprint);
s2->flags = s->flags;
@ -2286,26 +2295,39 @@ check_user_ids (strlist_t *sp,
/* Continue the search. */
if (DBG_LOOKUP)
log_debug ("%s: Check for duplicates for %s='%s'\n",
log_debug ("%s: Checking if %s='%s' is ambiguous or there are dups\n",
__func__, option, t->d);
err = keydb_search (hd, &desc, 1, NULL);
if (! err)
/* Another result! */
while (1)
{
char fingerprint_bin2[MAX_FINGERPRINT_LEN];
size_t fingerprint_bin2_len = sizeof (fingerprint_bin2);
char fingerprint2[2 * MAX_FINGERPRINT_LEN + 1];
log_error (_("key specification '%s' is ambiguous\n"), t->d);
if (!opt.quiet)
log_info (_("(check argument of option '%s')\n"), option);
err = keydb_search (hd, &desc, 1, NULL);
if (gpg_err_code (err) == GPG_ERR_NOT_FOUND
|| gpg_err_code (err) == GPG_ERR_EOF)
/* Not found => not ambiguous. */
break;
else if (err)
/* An error (other than "not found"). */
{
log_error (_("error searching the keyring: %s\n"),
gpg_strerror (err));
if (! rc)
rc = GPG_ERR_AMBIGUOUS_NAME;
rc = err;
break;
}
/* Another result! */
err = keydb_get_keyblock (hd, &kb);
if (err)
{
log_error (_("error reading keyblock: %s\n"), gpg_strerror (err));
if (! rc)
rc = err;
}
else
{
pk = kb->pkt->pkt.public_key;
@ -2313,25 +2335,53 @@ check_user_ids (strlist_t *sp,
assert (fingerprint_bin2_len == sizeof (fingerprint_bin2));
bin2hex (fingerprint_bin2, MAX_FINGERPRINT_LEN, fingerprint2);
/* TRANSLATORS: The %s prints a key specification which
for example has been given at the command line. Two
lines with fingerprints are printed after this message. */
if (strcmp (fingerprint, fingerprint2) == 0)
dups ++;
else
{
ambiguous ++;
if (! rc)
rc = GPG_ERR_AMBIGUOUS_NAME;
if (ambiguous == 1)
{
/* TRANSLATORS: The %s prints a key
specification which for example has been
given at the command line. Lines with
fingerprints are printed after this
message. */
log_error (_("key specification '%s' is ambiguous\n"),
t->d);
if (!opt.quiet)
log_info (_("(check argument of option '%s')\n"),
option);
log_info (_("'%s' matches at least:\n"), t->d);
log_info (" %s\n", fingerprint);
log_info (" %s\n", fingerprint2);
log_info (" %s\n",
format_hexfingerprint
(fingerprint,
fingerprint_formatted,
sizeof fingerprint_formatted));
}
log_info (" %s\n",
format_hexfingerprint
(fingerprint2,
fingerprint_formatted,
sizeof fingerprint_formatted));
}
release_kbnode (kb);
}
}
else if (! (gpg_err_code (err) == GPG_ERR_NOT_FOUND
|| gpg_err_code (err) == GPG_ERR_EOF))
/* An error (other than "not found"). */
{
log_error (_("error searching the keyring: %s\n"),
gpg_strerror (err));
if (! rc)
rc = err;
}
if (dups)
log_info (_("Warning: %s appears in the keyring %d times.\n"),
format_hexfingerprint (fingerprint,
fingerprint_formatted,
sizeof fingerprint_formatted),
1 + dups);
}
strlist_rev (&s2);