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OpenSSL: Automatically enable PKCS#11 engine where it's needed

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It needs to be available to ENGINE_by_id(), which in my case means it
needs to be /usr/lib64/openssl/engines/libpkcs11.so. But that's a system
packaging issue. If it isn't there, it will fail gracefully enough with:

ENGINE: engine pkcs11 not available [error:25066067:DSO support routines:DLFCN_LOAD:could not load the shared library]
TLS: Failed to set TLS connection parameters
EAP-TLS: Failed to initialize SSL.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse 2014-12-18 15:09:47 +00:00 committed by Jouni Malinen
parent ddda627618
commit 96955192b3
1 changed files with 29 additions and 13 deletions
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42
src/crypto/tls_openssl.c
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@ -3205,28 +3205,44 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
{ {
int ret; int ret;
unsigned long err; unsigned long err;
int can_pkcs11 = 0;
const char *key_id = params->key_id; const char *key_id = params->key_id;
const char *cert_id = params->cert_id; const char *cert_id = params->cert_id;
const char *ca_cert_id = params->ca_cert_id; const char *ca_cert_id = params->ca_cert_id;
const char *engine_id = params->engine ? params->engine_id : NULL;
if (conn == NULL) if (conn == NULL)
return -1; return -1;
/* /*
* If any of these three are actually a PKCS#11 URI, treat them * If the engine isn't explicitly configured, and any of the
* as _id fields for the ENGINE. * cert/key fields are actually PKCS#11 URIs, then automatically
* use the PKCS#11 ENGINE.
*/ */
if (!key_id && params->private_key && if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
os_strncmp(params->private_key, "pkcs11:", 7) == 0) can_pkcs11 = 1;
if (!key_id && params->private_key && can_pkcs11 &&
os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
can_pkcs11 = 2;
key_id = params->private_key; key_id = params->private_key;
}
if (!cert_id && params->client_cert && if (!cert_id && params->client_cert && can_pkcs11 &&
os_strncmp(params->client_cert, "pkcs11:", 7) == 0) os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
can_pkcs11 = 2;
cert_id = params->client_cert; cert_id = params->client_cert;
}
if (!ca_cert_id && params->ca_cert && if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
can_pkcs11 = 2;
ca_cert_id = params->ca_cert; ca_cert_id = params->ca_cert;
}
/* If we need to automatically enable the PKCS#11 ENGINE, do so. */
if (can_pkcs11 == 2 && !engine_id)
engine_id = "pkcs11";
if (params->flags & TLS_CONN_EAP_FAST) { if (params->flags & TLS_CONN_EAP_FAST) {
wpa_printf(MSG_DEBUG, wpa_printf(MSG_DEBUG,
@ -3243,9 +3259,9 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
__func__, ERR_error_string(err, NULL)); __func__, ERR_error_string(err, NULL));
} }
if (params->engine) { if (engine_id) {
wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine"); wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
ret = tls_engine_init(conn, params->engine_id, params->pin, ret = tls_engine_init(conn, engine_id, params->pin,
key_id, cert_id, ca_cert_id); key_id, cert_id, ca_cert_id);
if (ret) if (ret)
return ret; return ret;
@ -3256,7 +3272,7 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
params->suffix_match)) params->suffix_match))
return -1; return -1;
if (params->engine && ca_cert_id) { if (engine_id && ca_cert_id) {
if (tls_connection_engine_ca_cert(tls_ctx, conn, if (tls_connection_engine_ca_cert(tls_ctx, conn,
ca_cert_id)) ca_cert_id))
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
@ -3266,7 +3282,7 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
params->ca_path)) params->ca_path))
return -1; return -1;
if (params->engine && cert_id) { if (engine_id && cert_id) {
if (tls_connection_engine_client_cert(conn, cert_id)) if (tls_connection_engine_client_cert(conn, cert_id))
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
} else if (tls_connection_client_cert(conn, params->client_cert, } else if (tls_connection_client_cert(conn, params->client_cert,
@ -3274,7 +3290,7 @@ int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
params->client_cert_blob_len)) params->client_cert_blob_len))
return -1; return -1;
if (params->engine && key_id) { if (engine_id && key_id) {
wpa_printf(MSG_DEBUG, "TLS: Using private key from engine"); wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
if (tls_connection_engine_private_key(conn)) if (tls_connection_engine_private_key(conn))
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;