- {
- unsigned int *pflags = arg;
- if (!strncmp(alg, "ALL", len))
- *pflags |= ENGINE_METHOD_ALL;
- else if (!strncmp(alg, "RSA", len))
- *pflags |= ENGINE_METHOD_RSA;
- else if (!strncmp(alg, "DSA", len))
- *pflags |= ENGINE_METHOD_DSA;
- else if (!strncmp(alg, "ECDH", len))
- *pflags |= ENGINE_METHOD_ECDH;
- else if (!strncmp(alg, "ECDSA", len))
- *pflags |= ENGINE_METHOD_ECDSA;
- else if (!strncmp(alg, "DH", len))
- *pflags |= ENGINE_METHOD_DH;
- else if (!strncmp(alg, "RAND", len))
- *pflags |= ENGINE_METHOD_RAND;
- else if (!strncmp(alg, "CIPHERS", len))
- *pflags |= ENGINE_METHOD_CIPHERS;
- else if (!strncmp(alg, "DIGESTS", len))
- *pflags |= ENGINE_METHOD_DIGESTS;
- else if (!strncmp(alg, "PKEY", len))
- *pflags |= ENGINE_METHOD_PKEY_METHS;
- else
- return 0;
- return 1;
- }
-
+{
+ unsigned int *pflags = arg;
+ if (alg == NULL)
+ return 0;
+ if (!strncmp(alg, "ALL", len))
+ *pflags |= ENGINE_METHOD_ALL;
+ else if (!strncmp(alg, "RSA", len))
+ *pflags |= ENGINE_METHOD_RSA;
+ else if (!strncmp(alg, "DSA", len))
+ *pflags |= ENGINE_METHOD_DSA;
+ else if (!strncmp(alg, "ECDH", len))
+ *pflags |= ENGINE_METHOD_ECDH;
+ else if (!strncmp(alg, "ECDSA", len))
+ *pflags |= ENGINE_METHOD_ECDSA;
+ else if (!strncmp(alg, "DH", len))
+ *pflags |= ENGINE_METHOD_DH;
+ else if (!strncmp(alg, "RAND", len))
+ *pflags |= ENGINE_METHOD_RAND;
+ else if (!strncmp(alg, "CIPHERS", len))
+ *pflags |= ENGINE_METHOD_CIPHERS;
+ else if (!strncmp(alg, "DIGESTS", len))
+ *pflags |= ENGINE_METHOD_DIGESTS;
+ else if (!strncmp(alg, "PKEY", len))
+ *pflags |= ENGINE_METHOD_PKEY_METHS | ENGINE_METHOD_PKEY_ASN1_METHS;
+ else if (!strncmp(alg, "PKEY_CRYPTO", len))
+ *pflags |= ENGINE_METHOD_PKEY_METHS;
+ else if (!strncmp(alg, "PKEY_ASN1", len))
+ *pflags |= ENGINE_METHOD_PKEY_ASN1_METHS;
+ else
+ return 0;
+ return 1;
+}