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author | Stef Walter <stef@thewalter.net> | 2013-06-24 13:34:30 +0200 |
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committer | Stef Walter <stef@thewalter.net> | 2013-06-25 13:27:01 +0200 |
commit | 069c52a10cc4c4c06de8a4d83ddb3755e40be7a4 (patch) | |
tree | 039013d0a4c0e53050204c92d4028e2419f80461 /trust/oid.c | |
parent | 5489a1456c5a6f320bd2b3aa849f36f10d538e81 (diff) | |
download | p11-kit-069c52a10cc4c4c06de8a4d83ddb3755e40be7a4.tar.gz |
Reorganize various components
* p11-kit library and tool in the p11-kit/ subdirectory
* trust module and new trust tool in trust/ subdirectory
* No more tools/ subdirectory
* Lots less in the common/ subdirectory
Diffstat (limited to 'trust/oid.c')
-rw-r--r-- | trust/oid.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/trust/oid.c b/trust/oid.c new file mode 100644 index 0000000..b4b0bf6 --- /dev/null +++ b/trust/oid.c @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2012 Red Hat Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above + * copyright notice, this list of conditions and the + * following disclaimer. + * * Redistributions in binary form must reproduce the + * above copyright notice, this list of conditions and + * the following disclaimer in the documentation and/or + * other materials provided with the distribution. + * * The names of contributors to this software may not be + * used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF + * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH + * DAMAGE. + * + * Author: Stef Walter <stefw@redhat.com> + */ + +#include "config.h" + +#include "oid.h" + +#include <assert.h> +#include <stdlib.h> +#include <string.h> + +/* + * We deal with OIDs a lot in their DER form. These have the + * advantage of having the length encoded in their second byte, + * at least for all the OIDs we're interested in. + * + * The goal here is to avoid carrying around extra length + * information about DER encoded OIDs. + */ + +bool +p11_oid_simple (const unsigned char *oid, + int len) +{ + return (oid != NULL && + len > 3 && /* minimum length */ + oid[0] == 0x06 && /* simple encoding */ + (oid[1] & 128) == 0 && /* short form length */ + (size_t)oid[1] == len - 2); /* matches length */ +} + +bool +p11_oid_equal (const void *oid_one, + const void *oid_two) +{ + int len_one; + int len_two; + + len_one = p11_oid_length (oid_one); + len_two = p11_oid_length (oid_two); + + return (len_one == len_two && + memcmp (oid_one, oid_two, len_one) == 0); +} + +int +p11_oid_length (const unsigned char *oid) +{ + assert (oid[0] == 0x06); + assert ((oid[1] & 128) == 0); + return (int)oid[1] + 2; +} |