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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_UTILITY_IMPORTER_NSS_DECRYPTOR_MAC_H_
      6 #define CHROME_UTILITY_IMPORTER_NSS_DECRYPTOR_MAC_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/basictypes.h"
     12 #include "base/strings/string16.h"
     13 
     14 namespace base {
     15 class FilePath;
     16 }
     17 
     18 // The following declarations of functions and types are from Firefox
     19 // NSS library.
     20 // source code:
     21 //   security/nss/lib/util/seccomon.h
     22 //   security/nss/lib/nss/nss.h
     23 // The license block is:
     24 
     25 /* ***** BEGIN LICENSE BLOCK *****
     26 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
     27 *
     28 * The contents of this file are subject to the Mozilla Public License Version
     29 * 1.1 (the "License"); you may not use this file except in compliance with
     30 * the License. You may obtain a copy of the License at
     31 * http://www.mozilla.org/MPL/
     32 *
     33 * Software distributed under the License is distributed on an "AS IS" basis,
     34 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
     35 * for the specific language governing rights and limitations under the
     36 * License.
     37 *
     38 * The Original Code is the Netscape security libraries.
     39 *
     40 * The Initial Developer of the Original Code is
     41 * Netscape Communications Corporation.
     42 * Portions created by the Initial Developer are Copyright (C) 1994-2000
     43 * the Initial Developer. All Rights Reserved.
     44 *
     45 * Contributor(s):
     46 *
     47 * Alternatively, the contents of this file may be used under the terms of
     48 * either the GNU General Public License Version 2 or later (the "GPL"), or
     49 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
     50 * in which case the provisions of the GPL or the LGPL are applicable instead
     51 * of those above. If you wish to allow use of your version of this file only
     52 * under the terms of either the GPL or the LGPL, and not to allow others to
     53 * use your version of this file under the terms of the MPL, indicate your
     54 * decision by deleting the provisions above and replace them with the notice
     55 * and other provisions required by the GPL or the LGPL. If you do not delete
     56 * the provisions above, a recipient may use your version of this file under
     57 * the terms of any one of the MPL, the GPL or the LGPL.
     58 *
     59 * ***** END LICENSE BLOCK ***** */
     60 
     61 enum SECItemType {
     62   siBuffer = 0,
     63   siClearDataBuffer = 1,
     64   siCipherDataBuffer = 2,
     65   siDERCertBuffer = 3,
     66   siEncodedCertBuffer = 4,
     67   siDERNameBuffer = 5,
     68   siEncodedNameBuffer = 6,
     69   siAsciiNameString = 7,
     70   siAsciiString = 8,
     71   siDEROID = 9,
     72   siUnsignedInteger = 10,
     73   siUTCTime = 11,
     74   siGeneralizedTime = 12
     75 };
     76 
     77 struct SECItem {
     78   SECItemType type;
     79   unsigned char *data;
     80   unsigned int len;
     81 };
     82 
     83 enum SECStatus {
     84   SECWouldBlock = -2,
     85   SECFailure = -1,
     86   SECSuccess = 0
     87 };
     88 
     89 typedef int PRBool;
     90 #define PR_TRUE 1
     91 #define PR_FALSE 0
     92 
     93 typedef enum { PR_FAILURE = -1, PR_SUCCESS = 0 } PRStatus;
     94 
     95 typedef struct PK11SlotInfoStr PK11SlotInfo;
     96 
     97 typedef SECStatus (*NSSInitFunc)(const char *configdir);
     98 typedef SECStatus (*NSSShutdownFunc)(void);
     99 typedef PK11SlotInfo* (*PK11GetInternalKeySlotFunc)(void);
    100 typedef void (*PK11FreeSlotFunc)(PK11SlotInfo *slot);
    101 typedef SECStatus (*PK11CheckUserPasswordFunc)(PK11SlotInfo *slot, char *pw);
    102 typedef SECStatus
    103     (*PK11AuthenticateFunc)(PK11SlotInfo *slot, PRBool loadCerts, void *wincx);
    104 typedef SECStatus
    105     (*PK11SDRDecryptFunc)(SECItem *data, SECItem *result, void *cx);
    106 typedef void (*SECITEMFreeItemFunc)(SECItem *item, PRBool free_it);
    107 typedef void (*PLArenaFinishFunc)(void);
    108 typedef PRStatus (*PRCleanupFunc)(void);
    109 
    110 namespace content {
    111 struct PasswordForm;
    112 }
    113 
    114 // A wrapper for Firefox NSS decrypt component.
    115 class NSSDecryptor {
    116  public:
    117   NSSDecryptor()
    118       : NSS_Init(NULL), NSS_Shutdown(NULL), PK11_GetInternalKeySlot(NULL),
    119         PK11_CheckUserPassword(NULL), PK11_FreeSlot(NULL),
    120         PK11_Authenticate(NULL), PK11SDR_Decrypt(NULL), SECITEM_FreeItem(NULL),
    121         is_nss_initialized_(false) {}
    122   ~NSSDecryptor();
    123 
    124   // Initializes NSS if it hasn't already been initialized.
    125   bool Init(const base::FilePath& dll_path, const base::FilePath& db_path);
    126 
    127   // Decrypts Firefox stored passwords. Before using this method,
    128   // make sure Init() returns true.
    129   string16 Decrypt(const std::string& crypt) const;
    130 
    131   // Parses the Firefox password file content, decrypts the
    132   // username/password and reads other related information.
    133   // The result will be stored in |forms|.
    134   void ParseSignons(const std::string& content,
    135                     std::vector<content::PasswordForm>* forms);
    136 
    137   // Reads and parses the Firefox password sqlite db, decrypts the
    138   // username/password and reads other related information.
    139   // The result will be stored in |forms|.
    140   bool ReadAndParseSignons(const base::FilePath& sqlite_file,
    141                            std::vector<content::PasswordForm>* forms);
    142  private:
    143   PK11SlotInfo* GetKeySlotForDB() const { return PK11_GetInternalKeySlot(); }
    144   void FreeSlot(PK11SlotInfo* slot) const { PK11_FreeSlot(slot); }
    145 
    146   // Methods in Firefox security components.
    147   NSSInitFunc NSS_Init;
    148   NSSShutdownFunc NSS_Shutdown;
    149   PK11GetInternalKeySlotFunc PK11_GetInternalKeySlot;
    150   PK11CheckUserPasswordFunc PK11_CheckUserPassword;
    151   PK11FreeSlotFunc PK11_FreeSlot;
    152   PK11AuthenticateFunc PK11_Authenticate;
    153   PK11SDRDecryptFunc PK11SDR_Decrypt;
    154   SECITEMFreeItemFunc SECITEM_FreeItem;
    155 
    156   // True if NSS_Init() has been called
    157   bool is_nss_initialized_;
    158 
    159   DISALLOW_COPY_AND_ASSIGN(NSSDecryptor);
    160 };
    161 
    162 #endif  // CHROME_UTILITY_IMPORTER_NSS_DECRYPTOR_MAC_H_
    163