From 7a08e6823ef636917a95dbc4928048723efe864d Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Wed, 27 Nov 2013 20:53:00 +0100 Subject: Allow checking if a crypto algorithm is available at runtime --- src/crypto/mac/macs.c.in | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'src/crypto/mac/macs.c.in') diff --git a/src/crypto/mac/macs.c.in b/src/crypto/mac/macs.c.in index 9952396..3587322 100644 --- a/src/crypto/mac/macs.c.in +++ b/src/crypto/mac/macs.c.in @@ -50,9 +50,15 @@ static const mac_entry_t macs[] = { @MAC_LIST@ const fastd_mac_t** fastd_mac_config_alloc(void) { const fastd_mac_t **mac_conf = calloc(array_size(macs), sizeof(const fastd_mac_t*)); - size_t i; - for (i = 0; i < array_size(macs); i++) - mac_conf[i] = macs[i].impls[0].impl; + size_t i, j; + for (i = 0; i < array_size(macs); i++) { + for (j = 0; macs[i].impls[j].impl; j++) { + if (macs[i].impls[j].impl->available()) + break; + } + + mac_conf[i] = macs[i].impls[j].impl; + } return mac_conf; } @@ -68,6 +74,9 @@ bool fastd_mac_config(const fastd_mac_t **mac_conf, const char *name, const char size_t j; for (j = 0; macs[i].impls[j].impl; j++) { if (!strcmp(macs[i].impls[j].name, impl)) { + if (!macs[i].impls[j].impl->available()) + return false; + mac_conf[i] = macs[i].impls[j].impl; return true; } @@ -99,15 +108,17 @@ void fastd_mac_free(fastd_context_t *ctx) { } const fastd_mac_info_t* fastd_mac_info_get_by_name(const char *name) { - size_t i; + size_t i, j; for (i = 0; i < array_size(macs); i++) { if (strcmp(macs[i].name, name)) continue; - if (!macs[i].impls[0].impl) - continue; + for (j = 0; macs[i].impls[j].impl; j++) { + if (macs[i].impls[j].impl->available()) + return macs[i].info; + } - return macs[i].info; + break; } return NULL; -- cgit v1.2.3