From 20ee3b5a4f110f53a73746e18fc0eb0cbbb7845c Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Sat, 2 Nov 2013 04:32:18 +0100 Subject: Implement the first step towards a more flexible way to support crypto methods --- src/crypto/cipher/ciphers.c.in | 103 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) create mode 100644 src/crypto/cipher/ciphers.c.in (limited to 'src/crypto/cipher/ciphers.c.in') diff --git a/src/crypto/cipher/ciphers.c.in b/src/crypto/cipher/ciphers.c.in new file mode 100644 index 0000000..ee710f8 --- /dev/null +++ b/src/crypto/cipher/ciphers.c.in @@ -0,0 +1,103 @@ +/* + Copyright (c) 2012-2013, Matthias Schiffer + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. 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. + + 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 HOLDER 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. +*/ + + +#include + + +@CIPHER_DEFINITIONS@ + +typedef struct cipher_impl_list { + const char *name; + const fastd_cipher_t *const *impls; +} cipher_impl_list_t; + +@CIPHER_IMPLS@ + +static const cipher_impl_list_t ciphers[] = { @CIPHER_LIST@ +}; + + +const fastd_cipher_t** fastd_cipher_config_alloc(void) { + const fastd_cipher_t **cipher_conf = calloc(array_size(ciphers), sizeof(const fastd_cipher_t*)); + + size_t i; + for (i = 0; i < array_size(ciphers); i++) + cipher_conf[i] = ciphers[i].impls[0]; + + return cipher_conf; +} + +void fastd_cipher_config_free(const fastd_cipher_t **cipher_conf) { + free(cipher_conf); +} + +bool fastd_cipher_config(const fastd_cipher_t **cipher_conf, const char *name, const char *impl) { + size_t i; + for (i = 0; i < array_size(ciphers); i++) { + if (!strcmp(ciphers[i].name, name)) { + size_t j; + for (j = 0; ciphers[i].impls[j]; j++) { + if (!strcmp(ciphers[i].impls[j]->name, impl)) { + cipher_conf[i] = ciphers[i].impls[j]; + return true; + } + } + + return false; + } + } + + return false; +} + +void fastd_cipher_init(fastd_context_t *ctx) { + ctx->cipher_contexts = calloc(array_size(ciphers), sizeof(fastd_cipher_context_t*)); + + size_t i; + for (i = 0; i < array_size(ciphers); i++) + ctx->cipher_contexts[i] = ctx->conf->ciphers[i]->initialize(ctx); +} + +void fastd_cipher_free(fastd_context_t *ctx) { + size_t i; + for (i = 0; i < array_size(ciphers); i++) + ctx->conf->ciphers[i]->free(ctx, ctx->cipher_contexts[i]); + + free(ctx->cipher_contexts); +} + +bool fastd_cipher_get_by_name(fastd_context_t *ctx, const char *name, const fastd_cipher_t **cipher, fastd_cipher_context_t **cctx) { + size_t i; + for (i = 0; i < array_size(ciphers); i++) { + if (!strcmp(ciphers[i].name, name)) { + *cipher = ctx->conf->ciphers[i]; + *cctx = ctx->cipher_contexts[i]; + return true; + } + } + + return false; +} -- cgit v1.2.3