1 /* 2 * libjingle 3 * Copyright 2004--2008, Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright notice, 11 * this list of conditions and the following disclaimer in the documentation 12 * and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef TALK_BASE_OPENSSLIDENTITY_H__ 29 #define TALK_BASE_OPENSSLIDENTITY_H__ 30 31 #include <openssl/evp.h> 32 #include <openssl/x509.h> 33 34 #include <string> 35 36 #include "talk/base/common.h" 37 #include "talk/base/scoped_ptr.h" 38 #include "talk/base/sslidentity.h" 39 40 typedef struct ssl_ctx_st SSL_CTX; 41 42 namespace talk_base { 43 44 // OpenSSLKeyPair encapsulates an OpenSSL EVP_PKEY* keypair object, 45 // which is reference counted inside the OpenSSL library. 46 class OpenSSLKeyPair { 47 public: 48 static OpenSSLKeyPair* Generate(); 49 50 virtual ~OpenSSLKeyPair(); 51 GetReference()52 virtual OpenSSLKeyPair* GetReference() { 53 AddReference(); 54 return new OpenSSLKeyPair(pkey_); 55 } 56 pkey()57 EVP_PKEY* pkey() const { return pkey_; } 58 59 private: OpenSSLKeyPair(EVP_PKEY * pkey)60 explicit OpenSSLKeyPair(EVP_PKEY* pkey) : pkey_(pkey) { 61 ASSERT(pkey_ != NULL); 62 } 63 void AddReference(); 64 65 EVP_PKEY* pkey_; 66 67 DISALLOW_EVIL_CONSTRUCTORS(OpenSSLKeyPair); 68 }; 69 70 // OpenSSLCertificate encapsulates an OpenSSL X509* certificate object, 71 // which is also reference counted inside the OpenSSL library. 72 class OpenSSLCertificate : public SSLCertificate { 73 public: 74 static OpenSSLCertificate* Generate(OpenSSLKeyPair* key_pair, 75 const std::string& common_name); 76 static OpenSSLCertificate* FromPEMString(const std::string& pem_string, 77 int* pem_length); 78 79 virtual ~OpenSSLCertificate(); 80 GetReference()81 virtual OpenSSLCertificate* GetReference() { 82 AddReference(); 83 return new OpenSSLCertificate(x509_); 84 } 85 x509()86 X509* x509() const { return x509_; } 87 88 virtual std::string ToPEMString() const; 89 90 private: OpenSSLCertificate(X509 * x509)91 explicit OpenSSLCertificate(X509* x509) : x509_(x509) { 92 ASSERT(x509_ != NULL); 93 } 94 void AddReference(); 95 96 X509* x509_; 97 98 DISALLOW_EVIL_CONSTRUCTORS(OpenSSLCertificate); 99 }; 100 101 // Holds a keypair and certificate together, and a method to generate 102 // them consistently. 103 class OpenSSLIdentity : public SSLIdentity { 104 public: 105 static OpenSSLIdentity* Generate(const std::string& common_name); 106 ~OpenSSLIdentity()107 virtual ~OpenSSLIdentity() { } 108 certificate()109 virtual OpenSSLCertificate& certificate() const { 110 return *certificate_; 111 } 112 GetReference()113 virtual OpenSSLIdentity* GetReference() { 114 return new OpenSSLIdentity(key_pair_->GetReference(), 115 certificate_->GetReference()); 116 } 117 118 // Configure an SSL context object to use our key and certificate. 119 bool ConfigureIdentity(SSL_CTX* ctx); 120 121 private: OpenSSLIdentity(OpenSSLKeyPair * key_pair,OpenSSLCertificate * certificate)122 OpenSSLIdentity(OpenSSLKeyPair* key_pair, 123 OpenSSLCertificate* certificate) 124 : key_pair_(key_pair), certificate_(certificate) { 125 ASSERT(key_pair != NULL); 126 ASSERT(certificate != NULL); 127 } 128 129 scoped_ptr<OpenSSLKeyPair> key_pair_; 130 scoped_ptr<OpenSSLCertificate> certificate_; 131 132 DISALLOW_EVIL_CONSTRUCTORS(OpenSSLIdentity); 133 }; 134 135 } // namespace talk_base 136 137 #endif // TALK_BASE_OPENSSLIDENTITY_H__ 138