#include <openssl/engine.h>
#include <openssl/dso.h>
+/* This testing gunk is implemented (and explained) lower down. It also assumes
+ * the application explicitly calls "ENGINE_load_openssl()" because this is no
+ * longer automatic in ENGINE_load_builtin_engines(). */
+#define TEST_ENG_OPENSSL_RC4
+/* #define TEST_ENC_OPENSSL_RC4_FALLBACK */
+/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
+#define TEST_ENG_OPENSSL_RC4_P_INIT
+/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
+#define TEST_ENG_OPENSSL_SHA
+/* #define TEST_ENG_OPENSSL_SHA_FALLBACK */
+/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
+/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
+/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
+/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
+
+#ifdef TEST_ENG_OPENSSL_RC4
+static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
+ const int **nids, int nid);
+#endif
+#ifdef TEST_ENG_OPENSSL_SHA
+static int openssl_digests(ENGINE *e, const EVP_MD **digest,
+ const int **nids, int nid);
+#endif
+
/* The constants used when creating the ENGINE */
static const char *engine_openssl_id = "openssl";
static const char *engine_openssl_name = "Software engine support";
-/* As this is only ever called once, there's no need for locking
- * (indeed - the lock will already be held by our caller!!!) */
-ENGINE *ENGINE_openssl(void)
+static ENGINE *engine_openssl(void)
{
ENGINE *ret = ENGINE_new();
if(!ret)
return NULL;
- if(!ENGINE_set_id(ret, engine_openssl_id) ||
- !ENGINE_set_name(ret, engine_openssl_name) ||
+ if(!ENGINE_set_id(ret, engine_openssl_id)
+ || !ENGINE_set_name(ret, engine_openssl_name)
#ifndef OPENSSL_NO_RSA
- !ENGINE_set_RSA(ret, RSA_get_default_method()) ||
+ || !ENGINE_set_RSA(ret, RSA_get_default_method())
#endif
#ifndef OPENSSL_NO_DSA
- !ENGINE_set_DSA(ret, DSA_get_default_method()) ||
+ || !ENGINE_set_DSA(ret, DSA_get_default_method())
#endif
#ifndef OPENSSL_NO_DH
- !ENGINE_set_DH(ret, DH_get_default_method()) ||
+ || !ENGINE_set_DH(ret, DH_get_default_method())
+#endif
+ || !ENGINE_set_RAND(ret, RAND_SSLeay())
+#ifdef TEST_ENG_OPENSSL_RC4
+ || !ENGINE_set_ciphers(ret, openssl_ciphers)
+#endif
+#ifdef TEST_ENG_OPENSSL_SHA
+ || !ENGINE_set_digests(ret, openssl_digests)
#endif
- !ENGINE_set_RAND(ret, RAND_SSLeay()))
+ )
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
+
+void ENGINE_load_openssl(void)
+ {
+ ENGINE *toadd = engine_openssl();
+ if(!toadd) return;
+ ENGINE_add(toadd);
+ /* If the "add" worked, it gets a structural reference. So either way,
+ * we release our just-created reference. */
+ ENGINE_free(toadd);
+ ERR_clear_error();
+ }
+
+#ifdef TEST_ENG_OPENSSL_RC4
+/* This section of code compiles an "alternative implementation" of two modes of
+ * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
+ * should under normal circumstances go via this support rather than the default
+ * EVP support. There are other symbols to tweak the testing;
+ * TEST_ENC_OPENSSL_RC4_FALLBACK - declare support for "-1" so that all
+ * uncached cipher lookups check with this ENGINE (ie. it'll get asked
+ * about other ciphers, but hopefully not more than once for each nid).
+ * TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
+ * we're asked for a cipher we don't support (should only happen in
+ * combination with the "FALLBACK" case).
+ * TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
+ * the "init_key" handler is called.
+ * TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
+ */
+#include <openssl/evp.h>
+#include <openssl/rc4.h>
+#define TEST_RC4_KEY_SIZE 16
+#ifdef TEST_ENC_OPENSSL_RC4_FALLBACK
+static int test_cipher_nids[] = {-1};
+static int test_cipher_nids_number = 1;
+#else
+static int test_cipher_nids[] = {NID_rc4,NID_rc4_40};
+static int test_cipher_nids_number = 2;
+#endif
+typedef struct {
+ unsigned char key[TEST_RC4_KEY_SIZE];
+ RC4_KEY ks;
+ } TEST_RC4_KEY;
+#define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
+static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+ {
+#ifdef TEST_ENG_OPENSSL_RC4_P_INIT
+ fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
+#endif
+ memcpy(&test(ctx)->key[0],key,EVP_CIPHER_CTX_key_length(ctx));
+ RC4_set_key(&test(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx),
+ test(ctx)->key);
+ return 1;
+ }
+static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, unsigned int inl)
+ {
+#ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
+ fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
+#endif
+ RC4(&test(ctx)->ks,inl,in,out);
+ return 1;
+ }
+static const EVP_CIPHER test_r4_cipher=
+ {
+ NID_rc4,
+ 1,TEST_RC4_KEY_SIZE,0,
+ EVP_CIPH_VARIABLE_LENGTH,
+ test_rc4_init_key,
+ test_rc4_cipher,
+ NULL,
+ sizeof(TEST_RC4_KEY),
+ NULL,
+ NULL,
+ NULL
+ };
+static const EVP_CIPHER test_r4_40_cipher=
+ {
+ NID_rc4_40,
+ 1,5 /* 40 bit */,0,
+ EVP_CIPH_VARIABLE_LENGTH,
+ test_rc4_init_key,
+ test_rc4_cipher,
+ NULL,
+ sizeof(TEST_RC4_KEY),
+ NULL,
+ NULL,
+ NULL
+ };
+static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
+ const int **nids, int nid)
+ {
+ if(!cipher)
+ {
+ /* We are returning a list of supported nids */
+ *nids = test_cipher_nids;
+ return test_cipher_nids_number;
+ }
+ /* We are being asked for a specific cipher */
+ if(nid == NID_rc4)
+ *cipher = &test_r4_cipher;
+ else if(nid == NID_rc4_40)
+ *cipher = &test_r4_40_cipher;
+ else
+ {
+#ifdef TEST_ENG_OPENSSL_RC4_OTHERS
+ fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
+ "nid %d\n", nid);
+#endif
+ *cipher = NULL;
+ return 0;
+ }
+ return 1;
+ }
+#endif
+
+#ifdef TEST_ENG_OPENSSL_SHA
+/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
+#include <openssl/evp.h>
+#include <openssl/sha.h>
+#ifdef TEST_ENC_OPENSSL_SHA_FALLBACK
+static int test_digest_nids[] = {-1};
+static int test_digest_nids_number = 1;
+#else
+static int test_digest_nids[] = {NID_sha1};
+static int test_digest_nids_number = 1;
+#endif
+static int test_sha1_init(EVP_MD_CTX *ctx)
+ {
+#ifdef TEST_ENG_OPENSSL_SHA_P_INIT
+ fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
+#endif
+ return SHA1_Init(ctx->md_data);
+ }
+static int test_sha1_update(EVP_MD_CTX *ctx,const void *data,unsigned long count)
+ {
+#ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
+ fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
+#endif
+ return SHA1_Update(ctx->md_data,data,count);
+ }
+static int test_sha1_final(EVP_MD_CTX *ctx,unsigned char *md)
+ {
+#ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
+ fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
+#endif
+ return SHA1_Final(md,ctx->md_data);
+ }
+static const EVP_MD test_sha_md=
+ {
+ NID_sha1,
+ NID_sha1WithRSAEncryption,
+ SHA_DIGEST_LENGTH,
+ 0,
+ test_sha1_init,
+ test_sha1_update,
+ test_sha1_final,
+ NULL,
+ NULL,
+ EVP_PKEY_RSA_method,
+ SHA_CBLOCK,
+ sizeof(EVP_MD *)+sizeof(SHA_CTX),
+ };
+static int openssl_digests(ENGINE *e, const EVP_MD **digest,
+ const int **nids, int nid)
+ {
+ if(!digest)
+ {
+ /* We are returning a list of supported nids */
+ *nids = test_digest_nids;
+ return test_digest_nids_number;
+ }
+ /* We are being asked for a specific digest */
+ if(nid == NID_sha1)
+ *digest = &test_sha_md;
+ else
+ {
+#ifdef TEST_ENG_OPENSSL_SHA_OTHERS
+ fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
+ "nid %d\n", nid);
+#endif
+ *digest = NULL;
+ return 0;
+ }
+ return 1;
+ }
+#endif
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