Move crypto files out of base, to a top level directory.

src/crypto is now an independent project that contains our
cryptographic primitives (except md5 and sha1).

This removes the base dependency from nss, openssl and sqlite.

BUG=76996
TEST=none
Review URL: http://codereview.chromium.org/6805019

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@81611 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 204 insertions, 0 deletions

diff --git a/crypto/cssm_init.cc b/crypto/cssm_init.cc
new file mode 100644
index 0000000..5a5e3cc
--- /dev/null
+++ b/crypto/cssm_init.cc
@@ -0,0 +1,204 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "crypto/cssm_init.h"
+
+#include <Security/SecBase.h>
+
+#include "base/logging.h"
+#include "base/mac/scoped_cftyperef.h"
+#include "base/memory/singleton.h"
+#include "base/sys_string_conversions.h"
+
+// When writing crypto code for Mac OS X, you may find the following
+// documentation useful:
+// - Common Security: CDSA and CSSM, Version 2 (with corrigenda)
+//   http://www.opengroup.org/security/cdsa.htm
+// - Apple Cryptographic Service Provider Functional Specification
+// - CryptoSample: http://developer.apple.com/SampleCode/CryptoSample/
+
+namespace {
+
+void* CSSMMalloc(CSSM_SIZE size, void* alloc_ref) {
+  return malloc(size);
+}
+
+void CSSMFree(void* mem_ptr, void* alloc_ref) {
+  free(mem_ptr);
+}
+
+void* CSSMRealloc(void* ptr, CSSM_SIZE size, void* alloc_ref) {
+  return realloc(ptr, size);
+}
+
+void* CSSMCalloc(uint32 num, CSSM_SIZE size, void* alloc_ref) {
+  return calloc(num, size);
+}
+
+class CSSMInitSingleton {
+ public:
+  static CSSMInitSingleton* GetInstance() {
+    return Singleton<CSSMInitSingleton,
+                     LeakySingletonTraits<CSSMInitSingleton> >::get();
+  }
+
+  CSSM_CSP_HANDLE csp_handle() const { return csp_handle_; }
+  CSSM_CL_HANDLE cl_handle() const { return cl_handle_; }
+  CSSM_TP_HANDLE tp_handle() const { return tp_handle_; }
+
+ private:
+  CSSMInitSingleton()
+      : inited_(false), csp_loaded_(false), cl_loaded_(false),
+        tp_loaded_(false), csp_handle_(NULL), cl_handle_(NULL),
+        tp_handle_(NULL) {
+    static CSSM_VERSION version = {2, 0};
+    // TODO(wtc): what should our caller GUID be?
+    static const CSSM_GUID test_guid = {
+      0xFADE, 0, 0, { 1, 2, 3, 4, 5, 6, 7, 0 }
+    };
+    CSSM_RETURN crtn;
+    CSSM_PVC_MODE pvc_policy = CSSM_PVC_NONE;
+    crtn = CSSM_Init(&version, CSSM_PRIVILEGE_SCOPE_NONE, &test_guid,
+                     CSSM_KEY_HIERARCHY_NONE, &pvc_policy, NULL);
+    if (crtn) {
+      NOTREACHED();
+      return;
+    }
+    inited_ = true;
+
+    crtn = CSSM_ModuleLoad(&gGuidAppleCSP, CSSM_KEY_HIERARCHY_NONE, NULL, NULL);
+    if (crtn) {
+      NOTREACHED();
+      return;
+    }
+    csp_loaded_ = true;
+    crtn = CSSM_ModuleLoad(
+        &gGuidAppleX509CL, CSSM_KEY_HIERARCHY_NONE, NULL, NULL);
+    if (crtn) {
+      NOTREACHED();
+      return;
+    }
+    cl_loaded_ = true;
+    crtn = CSSM_ModuleLoad(
+        &gGuidAppleX509TP, CSSM_KEY_HIERARCHY_NONE, NULL, NULL);
+    if (crtn) {
+      NOTREACHED();
+      return;
+    }
+    tp_loaded_ = true;
+
+    const CSSM_API_MEMORY_FUNCS cssmMemoryFunctions = {
+      CSSMMalloc,
+      CSSMFree,
+      CSSMRealloc,
+      CSSMCalloc,
+      NULL
+    };
+
+    crtn = CSSM_ModuleAttach(&gGuidAppleCSP, &version, &cssmMemoryFunctions, 0,
+                             CSSM_SERVICE_CSP, 0, CSSM_KEY_HIERARCHY_NONE,
+                             NULL, 0, NULL, &csp_handle_);
+    DCHECK(crtn == CSSM_OK);
+    crtn = CSSM_ModuleAttach(&gGuidAppleX509CL, &version, &cssmMemoryFunctions,
+                             0, CSSM_SERVICE_CL, 0, CSSM_KEY_HIERARCHY_NONE,
+                             NULL, 0, NULL, &cl_handle_);
+    DCHECK(crtn == CSSM_OK);
+    crtn = CSSM_ModuleAttach(&gGuidAppleX509TP, &version, &cssmMemoryFunctions,
+                             0, CSSM_SERVICE_TP, 0, CSSM_KEY_HIERARCHY_NONE,
+                             NULL, 0, NULL, &tp_handle_);
+    DCHECK(crtn == CSSM_OK);
+  }
+
+  ~CSSMInitSingleton() {
+    CSSM_RETURN crtn;
+    if (csp_handle_) {
+      CSSM_RETURN crtn = CSSM_ModuleDetach(csp_handle_);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (cl_handle_) {
+      CSSM_RETURN crtn = CSSM_ModuleDetach(cl_handle_);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (tp_handle_) {
+      CSSM_RETURN crtn = CSSM_ModuleDetach(tp_handle_);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (csp_loaded_) {
+      crtn = CSSM_ModuleUnload(&gGuidAppleCSP, NULL, NULL);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (cl_loaded_) {
+      crtn = CSSM_ModuleUnload(&gGuidAppleX509CL, NULL, NULL);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (tp_loaded_) {
+      crtn = CSSM_ModuleUnload(&gGuidAppleX509TP, NULL, NULL);
+      DCHECK(crtn == CSSM_OK);
+    }
+    if (inited_) {
+      crtn = CSSM_Terminate();
+      DCHECK(crtn == CSSM_OK);
+    }
+  }
+
+  bool inited_;  // True if CSSM_Init has been called successfully.
+  bool csp_loaded_;  // True if gGuidAppleCSP has been loaded
+  bool cl_loaded_;  // True if gGuidAppleX509CL has been loaded.
+  bool tp_loaded_;  // True if gGuidAppleX509TP has been loaded.
+  CSSM_CSP_HANDLE csp_handle_;
+  CSSM_CL_HANDLE cl_handle_;
+  CSSM_TP_HANDLE tp_handle_;
+
+  friend struct DefaultSingletonTraits<CSSMInitSingleton>;
+};
+
+}  // namespace
+
+namespace crypto {
+
+void EnsureCSSMInit() {
+  CSSMInitSingleton::GetInstance();
+}
+
+CSSM_CSP_HANDLE GetSharedCSPHandle() {
+  return CSSMInitSingleton::GetInstance()->csp_handle();
+}
+
+CSSM_CL_HANDLE GetSharedCLHandle() {
+  return CSSMInitSingleton::GetInstance()->cl_handle();
+}
+
+CSSM_TP_HANDLE GetSharedTPHandle() {
+  return CSSMInitSingleton::GetInstance()->tp_handle();
+}
+
+void* CSSMMalloc(CSSM_SIZE size) {
+  return ::CSSMMalloc(size, NULL);
+}
+
+void CSSMFree(void* ptr) {
+  ::CSSMFree(ptr, NULL);
+}
+
+void LogCSSMError(const char* fn_name, CSSM_RETURN err) {
+  if (!err)
+    return;
+  base::mac::ScopedCFTypeRef<CFStringRef> cfstr(
+      SecCopyErrorMessageString(err, NULL));
+  LOG(ERROR) << fn_name << " returned " << err
+             << " (" << base::SysCFStringRefToUTF8(cfstr) << ")";
+}
+
+ScopedCSSMData::ScopedCSSMData() {
+  memset(&data_, 0, sizeof(data_));
+}
+
+ScopedCSSMData::~ScopedCSSMData() {
+  if (data_.Data) {
+    CSSMFree(data_.Data);
+    data_.Data = NULL;
+  }
+}
+
+}  // namespace crypto