Mercurial > dropbear
view libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c @ 553:8711f20b89ab
- For uclinux, only cleanup on exit for the main process. This avoids
trashing the state when a failing child exits.
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 09 Jul 2009 16:01:30 +0000 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
line wrap: on
line source
/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://libtomcrypt.com */ #include "tomcrypt.h" #include <stdarg.h> /** @file der_decode_sequence_multi.c ASN.1 DER, decode a SEQUENCE, Tom St Denis */ #ifdef LTC_DER /** Decode a SEQUENCE type using a VA list @param in Input buffer @param inlen Length of input in octets @remark <...> is of the form <type, size, data> (int, unsigned long, void*) @return CRYPT_OK on success */ int der_decode_sequence_multi(const unsigned char *in, unsigned long inlen, ...) { int err, type; unsigned long size, x; void *data; va_list args; ltc_asn1_list *list; LTC_ARGCHK(in != NULL); /* get size of output that will be required */ va_start(args, inlen); x = 0; for (;;) { type = va_arg(args, int); size = va_arg(args, unsigned long); data = va_arg(args, void*); if (type == LTC_ASN1_EOL) { break; } switch (type) { case LTC_ASN1_BOOLEAN: case LTC_ASN1_INTEGER: case LTC_ASN1_SHORT_INTEGER: case LTC_ASN1_BIT_STRING: case LTC_ASN1_OCTET_STRING: case LTC_ASN1_NULL: case LTC_ASN1_OBJECT_IDENTIFIER: case LTC_ASN1_IA5_STRING: case LTC_ASN1_PRINTABLE_STRING: case LTC_ASN1_UTF8_STRING: case LTC_ASN1_UTCTIME: case LTC_ASN1_SET: case LTC_ASN1_SETOF: case LTC_ASN1_SEQUENCE: case LTC_ASN1_CHOICE: ++x; break; default: va_end(args); return CRYPT_INVALID_ARG; } } va_end(args); /* allocate structure for x elements */ if (x == 0) { return CRYPT_NOP; } list = XCALLOC(sizeof(*list), x); if (list == NULL) { return CRYPT_MEM; } /* fill in the structure */ va_start(args, inlen); x = 0; for (;;) { type = va_arg(args, int); size = va_arg(args, unsigned long); data = va_arg(args, void*); if (type == LTC_ASN1_EOL) { break; } switch (type) { case LTC_ASN1_BOOLEAN: case LTC_ASN1_INTEGER: case LTC_ASN1_SHORT_INTEGER: case LTC_ASN1_BIT_STRING: case LTC_ASN1_OCTET_STRING: case LTC_ASN1_NULL: case LTC_ASN1_OBJECT_IDENTIFIER: case LTC_ASN1_IA5_STRING: case LTC_ASN1_PRINTABLE_STRING: case LTC_ASN1_UTF8_STRING: case LTC_ASN1_UTCTIME: case LTC_ASN1_SEQUENCE: case LTC_ASN1_SET: case LTC_ASN1_SETOF: case LTC_ASN1_CHOICE: list[x].type = type; list[x].size = size; list[x++].data = data; break; default: va_end(args); err = CRYPT_INVALID_ARG; goto LBL_ERR; } } va_end(args); err = der_decode_sequence(in, inlen, list, x); LBL_ERR: XFREE(list); return err; } #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_decode_sequence_multi.c,v $ */ /* $Revision: 1.12 $ */ /* $Date: 2006/11/26 02:25:18 $ */