| 1 | {==============================================================================|
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| 2 | | Project : Ararat Synapse | 001.000.006 |
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| 3 | |==============================================================================|
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| 4 | | Content: SSL support by StreamSecII |
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| 5 | |==============================================================================|
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| 6 | | Copyright (c)1999-2005, Lukas Gebauer |
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| 7 | | All rights reserved. |
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| 8 | | |
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| 9 | | Redistribution and use in source and binary forms, with or without |
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| 10 | | modification, are permitted provided that the following conditions are met: |
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| 11 | | |
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| 12 | | Redistributions of source code must retain the above copyright notice, this |
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| 13 | | list of conditions and the following disclaimer. |
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| 14 | | |
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| 15 | | Redistributions in binary form must reproduce the above copyright notice, |
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| 16 | | this list of conditions and the following disclaimer in the documentation |
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| 17 | | and/or other materials provided with the distribution. |
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| 18 | | |
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| 19 | | Neither the name of Lukas Gebauer nor the names of its contributors may |
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| 20 | | be used to endorse or promote products derived from this software without |
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| 21 | | specific prior written permission. |
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| 22 | | |
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| 23 | | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 24 | | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 25 | | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 26 | | ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR |
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| 27 | | ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 28 | | DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| 29 | | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
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| 30 | | CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 31 | | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 32 | | OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
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| 33 | | DAMAGE. |
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| 34 | |==============================================================================|
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| 35 | | The Initial Developer of the Original Code is Lukas Gebauer (Czech Republic).|
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| 36 | | Portions created by Lukas Gebauer are Copyright (c)2005. |
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| 37 | | All Rights Reserved. |
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| 38 | |==============================================================================|
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| 39 | | Contributor(s): |
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| 40 | | Henrick Hellström <henrick@streamsec.se> |
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| 41 | |==============================================================================|
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| 42 | | History: see HISTORY.HTM from distribution package |
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| 43 | | (Found at URL: http://www.ararat.cz/synapse/) |
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| 44 | |==============================================================================}
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| 45 |
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| 46 | {:@abstract(SSL plugin for StreamSecII or OpenStreamSecII)
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| 47 |
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| 48 | StreamSecII is native pascal library, you not need any external libraries!
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| 49 |
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| 50 | You can tune lot of StreamSecII properties by using your GlobalServer. If you not
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| 51 | using your GlobalServer, then this plugin create own TSimpleTLSInternalServer
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| 52 | instance for each TCP connection. Formore information about GlobalServer usage
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| 53 | refer StreamSecII documentation.
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| 54 |
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| 55 | If you are not using key and certificate by GlobalServer, then you can use
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| 56 | properties of this plugin instead, but this have limited features and
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| 57 | @link(TCustomSSL.KeyPassword) not working properly yet!
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| 58 |
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| 59 | For handling keys and certificates you can use this properties:
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| 60 | @link(TCustomSSL.CertCAFile), @link(TCustomSSL.CertCA),
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| 61 | @link(TCustomSSL.TrustCertificateFile), @link(TCustomSSL.TrustCertificate),
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| 62 | @link(TCustomSSL.PrivateKeyFile), @link(TCustomSSL.PrivateKey),
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| 63 | @link(TCustomSSL.CertificateFile), @link(TCustomSSL.Certificate),
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| 64 | @link(TCustomSSL.PFXFile). For usage of this properties and for possible formats
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| 65 | of keys and certificates refer to StreamSecII documentation.
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| 66 | }
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| 67 |
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| 68 | {$IFDEF FPC}
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| 69 | {$MODE DELPHI}
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| 70 | {$ENDIF}
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| 71 | {$H+}
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| 72 |
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| 73 | unit ssl_streamsec;
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| 74 |
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| 75 | interface
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| 76 |
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| 77 | uses
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| 78 | SysUtils, Classes,
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| 79 | blcksock, synsock, synautil, synacode,
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| 80 | TlsInternalServer, TlsSynaSock, TlsConst, StreamSecII, Asn1, X509Base,
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| 81 | SecUtils;
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| 82 |
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| 83 | type
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| 84 | {:@exclude}
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| 85 | TMyTLSSynSockSlave = class(TTLSSynSockSlave)
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| 86 | protected
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| 87 | procedure SetMyTLSServer(const Value: TCustomTLSInternalServer);
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| 88 | function GetMyTLSServer: TCustomTLSInternalServer;
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| 89 | published
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| 90 | property MyTLSServer: TCustomTLSInternalServer read GetMyTLSServer write SetMyTLSServer;
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| 91 | end;
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| 92 |
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| 93 | {:@abstract(class implementing StreamSecII SSL plugin.)
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| 94 | Instance of this class will be created for each @link(TTCPBlockSocket).
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| 95 | You not need to create instance of this class, all is done by Synapse itself!}
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| 96 | TSSLStreamSec = class(TCustomSSL)
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| 97 | protected
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| 98 | FSlave: TMyTLSSynSockSlave;
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| 99 | FIsServer: Boolean;
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| 100 | FTLSServer: TCustomTLSInternalServer;
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| 101 | FServerCreated: Boolean;
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| 102 | function SSLCheck: Boolean;
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| 103 | function Init(server:Boolean): Boolean;
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| 104 | function DeInit: Boolean;
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| 105 | function Prepare(server:Boolean): Boolean;
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| 106 | procedure NotTrustEvent(Sender: TObject; Cert: TASN1Struct; var ExplicitTrust: Boolean);
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| 107 | function X500StrToStr(const Prefix: string; const Value: TX500String): string;
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| 108 | function X501NameToStr(const Value: TX501Name): string;
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| 109 | function GetCert: PASN1Struct;
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| 110 | public
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| 111 | constructor Create(const Value: TTCPBlockSocket); override;
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| 112 | destructor Destroy; override;
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| 113 | {:See @inherited}
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| 114 | function LibVersion: String; override;
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| 115 | {:See @inherited}
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| 116 | function LibName: String; override;
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| 117 | {:See @inherited and @link(ssl_streamsec) for more details.}
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| 118 | function Connect: boolean; override;
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| 119 | {:See @inherited and @link(ssl_streamsec) for more details.}
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| 120 | function Accept: boolean; override;
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| 121 | {:See @inherited}
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| 122 | function Shutdown: boolean; override;
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| 123 | {:See @inherited}
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| 124 | function BiShutdown: boolean; override;
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| 125 | {:See @inherited}
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| 126 | function SendBuffer(Buffer: TMemory; Len: Integer): Integer; override;
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| 127 | {:See @inherited}
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| 128 | function RecvBuffer(Buffer: TMemory; Len: Integer): Integer; override;
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| 129 | {:See @inherited}
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| 130 | function WaitingData: Integer; override;
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| 131 | {:See @inherited}
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| 132 | function GetSSLVersion: string; override;
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| 133 | {:See @inherited}
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| 134 | function GetPeerSubject: string; override;
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| 135 | {:See @inherited}
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| 136 | function GetPeerIssuer: string; override;
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| 137 | {:See @inherited}
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| 138 | function GetPeerName: string; override;
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| 139 | {:See @inherited}
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| 140 | function GetPeerFingerprint: string; override;
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| 141 | {:See @inherited}
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| 142 | function GetCertInfo: string; override;
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| 143 | published
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| 144 | {:TLS server for tuning of StreamSecII.}
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| 145 | property TLSServer: TCustomTLSInternalServer read FTLSServer write FTLSServer;
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| 146 | end;
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| 147 |
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| 148 | implementation
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| 149 |
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| 150 | {==============================================================================}
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| 151 | procedure TMyTLSSynSockSlave.SetMyTLSServer(const Value: TCustomTLSInternalServer);
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| 152 | begin
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| 153 | TLSServer := Value;
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| 154 | end;
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| 155 |
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| 156 | function TMyTLSSynSockSlave.GetMyTLSServer: TCustomTLSInternalServer;
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| 157 | begin
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| 158 | Result := TLSServer;
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| 159 | end;
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| 160 |
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| 161 | {==============================================================================}
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| 162 |
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| 163 | constructor TSSLStreamSec.Create(const Value: TTCPBlockSocket);
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| 164 | begin
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| 165 | inherited Create(Value);
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| 166 | FSlave := nil;
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| 167 | FIsServer := False;
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| 168 | FTLSServer := nil;
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| 169 | end;
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| 170 |
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| 171 | destructor TSSLStreamSec.Destroy;
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| 172 | begin
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| 173 | DeInit;
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| 174 | inherited Destroy;
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| 175 | end;
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| 176 |
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| 177 | function TSSLStreamSec.LibVersion: String;
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| 178 | begin
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| 179 | Result := 'StreamSecII';
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| 180 | end;
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| 181 |
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| 182 | function TSSLStreamSec.LibName: String;
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| 183 | begin
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| 184 | Result := 'ssl_streamsec';
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| 185 | end;
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| 186 |
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| 187 | function TSSLStreamSec.SSLCheck: Boolean;
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| 188 | begin
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| 189 | Result := true;
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| 190 | FLastErrorDesc := '';
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| 191 | if not Assigned(FSlave) then
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| 192 | Exit;
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| 193 | FLastError := FSlave.ErrorCode;
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| 194 | if FLastError <> 0 then
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| 195 | begin
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| 196 | FLastErrorDesc := TlsConst.AlertMsg(FLastError);
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| 197 | end;
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| 198 | end;
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| 199 |
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| 200 | procedure TSSLStreamSec.NotTrustEvent(Sender: TObject; Cert: TASN1Struct; var ExplicitTrust: Boolean);
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| 201 | begin
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| 202 | ExplicitTrust := true;
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| 203 | end;
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| 204 |
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| 205 | function TSSLStreamSec.Init(server:Boolean): Boolean;
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| 206 | var
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| 207 | st: TMemoryStream;
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| 208 | pass: ISecretKey;
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| 209 | ws: WideString;
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| 210 | begin
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| 211 | Result := False;
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| 212 | ws := FKeyPassword;
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| 213 | pass := TSecretKey.CreateBmpStr(PWideChar(ws), length(ws));
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| 214 | try
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| 215 | FIsServer := Server;
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| 216 | FSlave := TMyTLSSynSockSlave.CreateSocket(FSocket.Socket);
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| 217 | if Assigned(FTLSServer) then
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| 218 | FSlave.MyTLSServer := FTLSServer
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| 219 | else
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| 220 | if Assigned(TLSInternalServer.GlobalServer) then
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| 221 | FSlave.MyTLSServer := TLSInternalServer.GlobalServer
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| 222 | else begin
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| 223 | FSlave.MyTLSServer := TSimpleTLSInternalServer.Create(nil);
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| 224 | FServerCreated := True;
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| 225 | end;
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| 226 | if server then
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| 227 | FSlave.MyTLSServer.ClientOrServer := cosServerSide
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| 228 | else
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| 229 | FSlave.MyTLSServer.ClientOrServer := cosClientSide;
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| 230 | if not FVerifyCert then
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| 231 | begin
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| 232 | FSlave.MyTLSServer.OnCertNotTrusted := NotTrustEvent;
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| 233 | end;
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| 234 | FSlave.MyTLSServer.Options.VerifyServerName := [];
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| 235 | FSlave.MyTLSServer.Options.Export40Bit := prAllowed;
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| 236 | FSlave.MyTLSServer.Options.Export56Bit := prAllowed;
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| 237 | FSlave.MyTLSServer.Options.RequestClientCertificate := False;
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| 238 | FSlave.MyTLSServer.Options.RequireClientCertificate := False;
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| 239 | if server and FVerifyCert then
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| 240 | begin
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| 241 | FSlave.MyTLSServer.Options.RequestClientCertificate := True;
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| 242 | FSlave.MyTLSServer.Options.RequireClientCertificate := True;
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| 243 | end;
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| 244 | if FCertCAFile <> '' then
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| 245 | FSlave.MyTLSServer.LoadRootCertsFromFile(CertCAFile);
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| 246 | if FCertCA <> '' then
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| 247 | begin
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| 248 | st := TMemoryStream.Create;
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| 249 | try
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| 250 | WriteStrToStream(st, FCertCA);
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| 251 | st.Seek(0, soFromBeginning);
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| 252 | FSlave.MyTLSServer.LoadRootCertsFromStream(st);
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| 253 | finally
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| 254 | st.free;
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| 255 | end;
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| 256 | end;
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| 257 | if FTrustCertificateFile <> '' then
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| 258 | FSlave.MyTLSServer.LoadTrustedCertsFromFile(FTrustCertificateFile);
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| 259 | if FTrustCertificate <> '' then
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| 260 | begin
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| 261 | st := TMemoryStream.Create;
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| 262 | try
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| 263 | WriteStrToStream(st, FTrustCertificate);
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| 264 | st.Seek(0, soFromBeginning);
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| 265 | FSlave.MyTLSServer.LoadTrustedCertsFromStream(st);
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| 266 | finally
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| 267 | st.free;
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| 268 | end;
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| 269 | end;
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| 270 | if FPrivateKeyFile <> '' then
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| 271 | FSlave.MyTLSServer.LoadPrivateKeyRingFromFile(FPrivateKeyFile, pass);
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| 272 | // FSlave.MyTLSServer.PrivateKeyRing.LoadPrivateKeyFromFile(FPrivateKeyFile, pass);
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| 273 | if FPrivateKey <> '' then
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| 274 | begin
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| 275 | st := TMemoryStream.Create;
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| 276 | try
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| 277 | WriteStrToStream(st, FPrivateKey);
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| 278 | st.Seek(0, soFromBeginning);
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| 279 | FSlave.MyTLSServer.LoadPrivateKeyRingFromStream(st, pass);
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| 280 | finally
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| 281 | st.free;
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| 282 | end;
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| 283 | end;
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| 284 | if FCertificateFile <> '' then
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| 285 | FSlave.MyTLSServer.LoadMyCertsFromFile(FCertificateFile);
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| 286 | if FCertificate <> '' then
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| 287 | begin
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| 288 | st := TMemoryStream.Create;
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| 289 | try
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| 290 | WriteStrToStream(st, FCertificate);
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| 291 | st.Seek(0, soFromBeginning);
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| 292 | FSlave.MyTLSServer.LoadMyCertsFromStream(st);
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| 293 | finally
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| 294 | st.free;
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| 295 | end;
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| 296 | end;
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| 297 | if FPFXfile <> '' then
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| 298 | FSlave.MyTLSServer.ImportFromPFX(FPFXfile, pass);
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| 299 | if server and FServerCreated then
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| 300 | begin
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| 301 | FSlave.MyTLSServer.Options.BulkCipherAES128 := prPrefer;
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| 302 | FSlave.MyTLSServer.Options.BulkCipherAES256 := prAllowed;
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| 303 | FSlave.MyTLSServer.Options.EphemeralECDHKeySize := ecs256;
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| 304 | FSlave.MyTLSServer.Options.SignatureRSA := prPrefer;
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| 305 | FSlave.MyTLSServer.Options.KeyAgreementRSA := prAllowed;
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| 306 | FSlave.MyTLSServer.Options.KeyAgreementECDHE := prAllowed;
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| 307 | FSlave.MyTLSServer.Options.KeyAgreementDHE := prPrefer;
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| 308 | FSlave.MyTLSServer.TLSSetupServer;
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| 309 | end;
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| 310 | Result := true;
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| 311 | finally
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| 312 | pass := nil;
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| 313 | end;
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| 314 | end;
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| 315 |
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| 316 | function TSSLStreamSec.DeInit: Boolean;
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| 317 | var
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| 318 | obj: TObject;
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| 319 | begin
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| 320 | Result := True;
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| 321 | if assigned(FSlave) then
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| 322 | begin
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| 323 | FSlave.Close;
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| 324 | if FServerCreated then
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| 325 | obj := FSlave.TLSServer
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| 326 | else
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| 327 | obj := nil;
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| 328 | FSlave.Free;
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| 329 | obj.Free;
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| 330 | FSlave := nil;
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| 331 | end;
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| 332 | FSSLEnabled := false;
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| 333 | end;
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| 334 |
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| 335 | function TSSLStreamSec.Prepare(server:Boolean): Boolean;
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| 336 | begin
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| 337 | Result := false;
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| 338 | DeInit;
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| 339 | if Init(server) then
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| 340 | Result := true
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| 341 | else
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| 342 | DeInit;
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| 343 | end;
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| 344 |
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| 345 | function TSSLStreamSec.Connect: boolean;
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| 346 | begin
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| 347 | Result := False;
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| 348 | if FSocket.Socket = INVALID_SOCKET then
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| 349 | Exit;
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| 350 | if Prepare(false) then
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| 351 | begin
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| 352 | FSlave.Open;
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| 353 | SSLCheck;
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| 354 | if FLastError <> 0 then
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| 355 | Exit;
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| 356 | FSSLEnabled := True;
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| 357 | Result := True;
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| 358 | end;
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| 359 | end;
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| 360 |
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| 361 | function TSSLStreamSec.Accept: boolean;
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| 362 | begin
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| 363 | Result := False;
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| 364 | if FSocket.Socket = INVALID_SOCKET then
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| 365 | Exit;
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| 366 | if Prepare(true) then
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| 367 | begin
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| 368 | FSlave.DoConnect;
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| 369 | SSLCheck;
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| 370 | if FLastError <> 0 then
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| 371 | Exit;
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| 372 | FSSLEnabled := True;
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| 373 | Result := True;
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| 374 | end;
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| 375 | end;
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| 376 |
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| 377 | function TSSLStreamSec.Shutdown: boolean;
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| 378 | begin
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| 379 | Result := BiShutdown;
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| 380 | end;
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| 381 |
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| 382 | function TSSLStreamSec.BiShutdown: boolean;
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| 383 | begin
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| 384 | DeInit;
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| 385 | Result := True;
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| 386 | end;
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| 387 |
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| 388 | function TSSLStreamSec.SendBuffer(Buffer: TMemory; Len: Integer): Integer;
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| 389 | var
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| 390 | l: integer;
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| 391 | begin
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| 392 | l := len;
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| 393 | FSlave.SendBuf(Buffer^, l, true);
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| 394 | Result := l;
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| 395 | SSLCheck;
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| 396 | end;
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| 397 |
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| 398 | function TSSLStreamSec.RecvBuffer(Buffer: TMemory; Len: Integer): Integer;
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| 399 | var
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| 400 | l: integer;
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| 401 | begin
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| 402 | l := Len;
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| 403 | Result := FSlave.ReceiveBuf(Buffer^, l);
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| 404 | SSLCheck;
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| 405 | end;
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| 406 |
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| 407 | function TSSLStreamSec.WaitingData: Integer;
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| 408 | begin
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| 409 | Result := 0;
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| 410 | while FSlave.Connected do begin
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| 411 | Result := FSlave.ReceiveLength;
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| 412 | if Result > 0 then
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| 413 | Break;
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| 414 | Sleep(1);
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| 415 | end;
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| 416 | end;
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| 417 |
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| 418 | function TSSLStreamSec.GetSSLVersion: string;
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| 419 | begin
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| 420 | Result := 'SSLv3 or TLSv1';
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| 421 | end;
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| 422 |
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| 423 | function TSSLStreamSec.GetCert: PASN1Struct;
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| 424 | begin
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| 425 | if FIsServer then
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| 426 | Result := FSlave.GetClientCert
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| 427 | else
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| 428 | Result := FSlave.GetServerCert;
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| 429 | end;
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| 430 |
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| 431 | function TSSLStreamSec.GetPeerSubject: string;
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| 432 | var
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| 433 | XName: TX501Name;
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| 434 | Cert: PASN1Struct;
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| 435 | begin
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| 436 | Result := '';
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| 437 | Cert := GetCert;
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| 438 | if Assigned(cert) then
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| 439 | begin
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| 440 | ExtractSubject(Cert^,XName, false);
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| 441 | Result := X501NameToStr(XName);
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| 442 | end;
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| 443 | end;
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| 444 |
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| 445 | function TSSLStreamSec.GetPeerName: string;
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| 446 | var
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| 447 | XName: TX501Name;
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| 448 | Cert: PASN1Struct;
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| 449 | begin
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| 450 | Result := '';
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| 451 | Cert := GetCert;
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| 452 | if Assigned(cert) then
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| 453 | begin
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| 454 | ExtractSubject(Cert^,XName, false);
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| 455 | Result := XName.commonName.Str;
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| 456 | end;
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| 457 | end;
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| 458 |
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| 459 | function TSSLStreamSec.GetPeerIssuer: string;
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| 460 | var
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| 461 | XName: TX501Name;
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| 462 | Cert: PASN1Struct;
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|---|
| 463 | begin
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| 464 | Result := '';
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| 465 | Cert := GetCert;
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| 466 | if Assigned(cert) then
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|---|
| 467 | begin
|
|---|
| 468 | ExtractIssuer(Cert^, XName, false);
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|---|
| 469 | Result := X501NameToStr(XName);
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|---|
| 470 | end;
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|---|
| 471 | end;
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|---|
| 472 |
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|---|
| 473 | function TSSLStreamSec.GetPeerFingerprint: string;
|
|---|
| 474 | var
|
|---|
| 475 | Cert: PASN1Struct;
|
|---|
| 476 | begin
|
|---|
| 477 | Result := '';
|
|---|
| 478 | Cert := GetCert;
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|---|
| 479 | if Assigned(cert) then
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|---|
| 480 | Result := MD5(Cert.ContentAsOctetString);
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|---|
| 481 | end;
|
|---|
| 482 |
|
|---|
| 483 | function TSSLStreamSec.GetCertInfo: string;
|
|---|
| 484 | var
|
|---|
| 485 | Cert: PASN1Struct;
|
|---|
| 486 | l: Tstringlist;
|
|---|
| 487 | begin
|
|---|
| 488 | Result := '';
|
|---|
| 489 | Cert := GetCert;
|
|---|
| 490 | if Assigned(cert) then
|
|---|
| 491 | begin
|
|---|
| 492 | l := TStringList.Create;
|
|---|
| 493 | try
|
|---|
| 494 | Asn1.RenderAsText(cert^, l, true, true, true, 2);
|
|---|
| 495 | Result := l.Text;
|
|---|
| 496 | finally
|
|---|
| 497 | l.free;
|
|---|
| 498 | end;
|
|---|
| 499 | end;
|
|---|
| 500 | end;
|
|---|
| 501 |
|
|---|
| 502 | function TSSLStreamSec.X500StrToStr(const Prefix: string;
|
|---|
| 503 | const Value: TX500String): string;
|
|---|
| 504 | begin
|
|---|
| 505 | if Value.Str = '' then
|
|---|
| 506 | Result := ''
|
|---|
| 507 | else
|
|---|
| 508 | Result := '/' + Prefix + '=' + Value.Str;
|
|---|
| 509 | end;
|
|---|
| 510 |
|
|---|
| 511 | function TSSLStreamSec.X501NameToStr(const Value: TX501Name): string;
|
|---|
| 512 | begin
|
|---|
| 513 | Result := X500StrToStr('CN',Value.commonName) +
|
|---|
| 514 | X500StrToStr('C',Value.countryName) +
|
|---|
| 515 | X500StrToStr('L',Value.localityName) +
|
|---|
| 516 | X500StrToStr('ST',Value.stateOrProvinceName) +
|
|---|
| 517 | X500StrToStr('O',Value.organizationName) +
|
|---|
| 518 | X500StrToStr('OU',Value.organizationalUnitName) +
|
|---|
| 519 | X500StrToStr('T',Value.title) +
|
|---|
| 520 | X500StrToStr('N',Value.name) +
|
|---|
| 521 | X500StrToStr('G',Value.givenName) +
|
|---|
| 522 | X500StrToStr('I',Value.initials) +
|
|---|
| 523 | X500StrToStr('SN',Value.surname) +
|
|---|
| 524 | X500StrToStr('GQ',Value.generationQualifier) +
|
|---|
| 525 | X500StrToStr('DNQ',Value.dnQualifier) +
|
|---|
| 526 | X500StrToStr('E',Value.emailAddress);
|
|---|
| 527 | end;
|
|---|
| 528 |
|
|---|
| 529 |
|
|---|
| 530 | {==============================================================================}
|
|---|
| 531 |
|
|---|
| 532 | initialization
|
|---|
| 533 | SSLImplementation := TSSLStreamSec;
|
|---|
| 534 |
|
|---|
| 535 | finalization
|
|---|
| 536 |
|
|---|
| 537 | end.
|
|---|
| 538 |
|
|---|
| 539 |
|
|---|
