Inital import.

Initial fork from f2d678e6e89b6508147086610e985d4e8416e867 (1.0.2 beta).

(This change contains substantial changes from the original and
effectively starts a new history.)

3 files changed, 242 insertions, 0 deletions

diff --git a/crypto/engine/CMakeLists.txt b/crypto/engine/CMakeLists.txt
new file mode 100644
index 00000000..5126e2a9
--- /dev/null
+++ b/crypto/engine/CMakeLists.txt
@@ -0,0 +1,9 @@
+include_directories(. .. ../../include)
+
+add_library(
+	engine
+
+	OBJECT
+
+	engine.c
+)
diff --git a/crypto/engine/engine.c b/crypto/engine/engine.c
new file mode 100644
index 00000000..bb0886e2
--- /dev/null
+++ b/crypto/engine/engine.c
@@ -0,0 +1,133 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <openssl/engine.h>
+
+#include <openssl/dh.h>
+#include <openssl/dsa.h>
+#include <openssl/ec_key.h>
+#include <openssl/mem.h>
+#include <openssl/rsa.h>
+#include <openssl/thread.h>
+
+
+struct engine_st {
+  DH_METHOD *dh_method;
+  DSA_METHOD *dsa_method;
+  RSA_METHOD *rsa_method;
+  ECDSA_METHOD *ecdsa_method;
+};
+
+ENGINE *ENGINE_new() {
+  ENGINE *engine = OPENSSL_malloc(sizeof(ENGINE));
+  if (engine == NULL) {
+    return NULL;
+  }
+
+  memset(engine, 0, sizeof(ENGINE));
+  return engine;
+}
+
+void ENGINE_free(ENGINE *engine) {
+  if (engine->dh_method != NULL) {
+    METHOD_unref(engine->dh_method);
+  }
+
+  OPENSSL_free(engine);
+}
+
+/* set_method takes a pointer to a method and its given size and sets
+ * |*out_member| to point to a copy of it. The copy is |compiled_size| bytes
+ * long and has zero padding if needed. */
+static int set_method(void **out_member, const void *method, size_t method_size,
+                      size_t compiled_size) {
+  void *copy = OPENSSL_malloc(compiled_size);
+  if (copy == NULL) {
+    return 0;
+  }
+
+  memset(copy, 0, compiled_size);
+
+  if (method_size > compiled_size) {
+    method_size = compiled_size;
+  }
+  memcpy(copy, method, method_size);
+
+  METHOD_unref(*out_member);
+  *out_member = copy;
+
+  return 1;
+}
+
+int ENGINE_set_DH_method(ENGINE *engine, const DH_METHOD *method,
+                         size_t method_size) {
+  return set_method((void **)&engine->dh_method, method, method_size,
+                    sizeof(DH_METHOD));
+}
+
+DH_METHOD *ENGINE_get_DH_method(const ENGINE *engine) {
+  return engine->dh_method;
+}
+
+int ENGINE_set_DSA_method(ENGINE *engine, const DSA_METHOD *method,
+                         size_t method_size) {
+  return set_method((void **)&engine->dsa_method, method, method_size,
+                    sizeof(DSA_METHOD));
+}
+
+DSA_METHOD *ENGINE_get_DSA_method(const ENGINE *engine) {
+  return engine->dsa_method;
+}
+
+int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
+                         size_t method_size) {
+  return set_method((void **)&engine->rsa_method, method, method_size,
+                    sizeof(RSA_METHOD));
+}
+
+RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine) {
+  return engine->rsa_method;
+}
+
+int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
+                            size_t method_size) {
+  return set_method((void **)&engine->ecdsa_method, method, method_size,
+                    sizeof(ECDSA_METHOD));
+}
+
+ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine) {
+  return engine->ecdsa_method;
+}
+
+void METHOD_ref(void *method_in) {
+  struct openssl_method_common_st *method = method_in;
+
+  if (method->is_static) {
+    return;
+  }
+
+  CRYPTO_add(&method->references, 1, CRYPTO_LOCK_ENGINE);
+}
+
+void METHOD_unref(void *method_in) {
+  struct openssl_method_common_st *method = method_in;
+
+  if (method == NULL || method->is_static) {
+    return;
+  }
+
+  if (CRYPTO_add(&method->references, -1, CRYPTO_LOCK_ENGINE) == 0) {
+    OPENSSL_free(method);
+  }
+}
diff --git a/crypto/engine/engine.h b/crypto/engine/engine.h
new file mode 100644
index 00000000..c97196e8
--- /dev/null
+++ b/crypto/engine/engine.h
@@ -0,0 +1,100 @@
+/* Copyright (c) 2014, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#ifndef OPENSSL_HEADER_ENGINE_H
+#define OPENSSL_HEADER_ENGINE_H
+
+#include <openssl/base.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+
+/* Engines are collections of methods. Methods are tables of function pointers,
+ * defined for certain algorithms, that allow operations on those algorithms to
+ * be overridden via a callback. This can be used, for example, to implement an
+ * RSA* that forwards operations to a hardware module.
+ *
+ * Methods are reference counted but |ENGINE|s are not. When creating a method,
+ * you should zero the whole structure and fill in the function pointers that
+ * you wish before setting it on an |ENGINE|. Any functions pointers that
+ * are NULL indicate that the default behaviour should be used. */
+
+
+/* Allocation and destruction. */
+
+/* ENGINE_new returns an empty ENGINE that uses the default method for all
+ * algorithms. */
+ENGINE *ENGINE_new();
+
+/* ENGINE_free decrements the reference counts for all methods linked from
+ * |engine| and frees |engine| itself. */
+void ENGINE_free(ENGINE *engine);
+
+
+/* Method accessors.
+ *
+ * Method accessors take a method pointer and the size of the structure. The
+ * size allows for ABI compatibility in the case that the method structure is
+ * extended with extra elements at the end. Methods are always copied by the
+ * set functions.
+ *
+ * Set functions return one on success and zero on allocation failure. */
+
+int ENGINE_set_DH_method(ENGINE *engine, const DH_METHOD *method,
+                         size_t method_size);
+DH_METHOD *ENGINE_get_DH_method(const ENGINE *engine);
+
+int ENGINE_set_DSA_method(ENGINE *engine, const DSA_METHOD *method,
+                          size_t method_size);
+DSA_METHOD *ENGINE_get_DSA_method(const ENGINE *engine);
+
+int ENGINE_set_RSA_method(ENGINE *engine, const RSA_METHOD *method,
+                          size_t method_size);
+RSA_METHOD *ENGINE_get_RSA_method(const ENGINE *engine);
+
+int ENGINE_set_ECDSA_method(ENGINE *engine, const ECDSA_METHOD *method,
+                            size_t method_size);
+ECDSA_METHOD *ENGINE_get_ECDSA_method(const ENGINE *engine);
+
+
+/* Generic method functions.
+ *
+ * These functions take a void* type but actually operate on all method
+ * structures. */
+
+/* METHOD_ref increments the reference count of |method|. */
+void METHOD_ref(void *method);
+
+/* METHOD_unref decrements the reference count of |method| and frees it if the
+ * reference count drops to zero. */
+void METHOD_unref(void *method);
+
+
+/* Private functions. */
+
+/* openssl_method_common_st contains the common part of all method structures.
+ * This must be the first member of all method structures. */
+struct openssl_method_common_st {
+  int references;
+  char is_static;
+};
+
+
+#if defined(__cplusplus)
+}  /* extern C */
+#endif
+
+#endif  /* OPENSSL_HEADER_ENGINE_H */