Qt Cryptographic Architecture: qpipe.h Source File

# qpipe.h

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    00001 /*
    00002  * Copyright (C) 2003-2007  Justin Karneges <justin@affinix.com>
    00003  *
    00004  * This library is free software; you can redistribute it and/or
    00005  * modify it under the terms of the GNU Lesser General Public
    00006  * License as published by the Free Software Foundation; either
    00007  * version 2.1 of the License, or (at your option) any later version.
    00008  *
    00009  * This library is distributed in the hope that it will be useful,
    00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012  * Lesser General Public License for more details.
    00013  *
    00014  * You should have received a copy of the GNU Lesser General Public
    00015  * License along with this library; if not, write to the Free Software
    00016  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
    00017  * 02110-1301  USA
    00018  *
    00019  */
    00020
    00031 #ifndef QPIPE_H
    00032 #define QPIPE_H
    00033
    00034 #ifndef DOXYGEN_SHOULD_SKIP_THIS
    00035
    00036 #ifndef QPIPE_NO_SECURE
    00037 # define QPIPE_SECURE
    00038 #endif
    00039
    00040 #ifdef QPIPE_SECURE
    00041 # include "QtCrypto"
    00042 #else
    00043 # define QCA_EXPORT
    00044 #endif
    00045
    00046 // defs adapted qprocess_p.h
    00047 #ifdef Q_OS_WIN
    00048 #include <windows.h>
    00049 typedef HANDLE Q_PIPE_ID;
    00050 #define INVALID_Q_PIPE_ID INVALID_HANDLE_VALUE
    00051 #else
    00052 typedef int Q_PIPE_ID;
    00053 #define INVALID_Q_PIPE_ID -1
    00054 #endif
    00055
    00056 #endif
    00057
    00058 // Note: for Windows console, I/O must be in UTF-8.  Reads are guaranteed to
    00059 //   to completely decode (no partial characters).  Likewise, writes must
    00060 //   not contain partial characters.
    00061
    00062 namespace QCA {
    00063
    00064
    00075 class QCA_EXPORT QPipeDevice : public QObject
    00076 {
    00077         Q_OBJECT
    00078 public:
    00082         enum Type
    00083         {
    00084                 Read,
    00085                 Write
    00086         };
    00087
    00093         QPipeDevice(QObject *parent = 0);
    00094         ~QPipeDevice();
    00095
    00099         Type type() const;
    00100
    00104         bool isValid() const;
    00105
    00115         Q_PIPE_ID id() const;
    00116
    00124         int idAsInt() const;
    00125
    00132         void take(Q_PIPE_ID id, Type t);
    00133
    00137         void enable();
    00138
    00142         void close();
    00143
    00147         void release();
    00148
    00156         bool setInheritable(bool enabled);
    00157
    00161         int bytesAvailable() const;
    00162
    00171         int read(char *data, int maxsize);
    00172
    00183         int write(const char *data, int size);
    00184
    00193         int writeResult(int *written) const;
    00194
    00195 Q_SIGNALS:
    00199         void notify();
    00200
    00201 private:
    00202         Q_DISABLE_COPY(QPipeDevice)
    00203
    00204         class Private;
    00205         friend class Private;
    00206         Private *d;
    00207 };
    00208
    00218 class QCA_EXPORT QPipeEnd : public QObject
    00219 {
    00220         Q_OBJECT
    00221 public:
    00222
    00226         enum Error
    00227         {
    00228                 ErrorEOF,
    00229                 ErrorBroken
    00230         };
    00231
    00237         QPipeEnd(QObject *parent = 0);
    00238
    00239         ~QPipeEnd();
    00240
    00244         void reset();
    00245
    00249         QPipeDevice::Type type() const;
    00250
    00257         bool isValid() const;
    00258
    00262         Q_PIPE_ID id() const;
    00263
    00267         int idAsInt() const;
    00268
    00275         void take(Q_PIPE_ID id, QPipeDevice::Type t);
    00276
    00277 #ifdef QPIPE_SECURE
    00278
    00286         void setSecurityEnabled(bool secure);
    00287 #endif
    00288
    00295         void enable();
    00296
    00302         void close();
    00303
    00310         void release();
    00311
    00320         bool setInheritable(bool enabled);
    00321
    00325         void finalize();
    00326
    00330         void finalizeAndRelease();
    00331
    00340         int bytesAvailable() const;
    00341
    00350         int bytesToWrite() const;
    00351
    00362         QByteArray read(int bytes = -1);
    00363
    00373         void write(const QByteArray &a);
    00374
    00375 #ifdef QPIPE_SECURE
    00376
    00386         SecureArray readSecure(int bytes = -1);
    00387
    00397         void writeSecure(const SecureArray &a);
    00398 #endif
    00399
    00406         QByteArray takeBytesToWrite();
    00407
    00408 #ifdef QPIPE_SECURE
    00409
    00415         SecureArray takeBytesToWriteSecure();
    00416 #endif
    00417
    00418 Q_SIGNALS:
    00425         void readyRead();
    00426
    00433         void bytesWritten(int bytes);
    00434
    00446         void closed();
    00447
    00454         void error(QCA::QPipeEnd::Error e);
    00455
    00456 private:
    00457         Q_DISABLE_COPY(QPipeEnd)
    00458
    00459         class Private;
    00460         friend class Private;
    00461         Private *d;
    00462 };
    00463
    00480 class QCA_EXPORT QPipe
    00481 {
    00482 public:
    00490         QPipe(QObject *parent = 0);
    00491
    00492         ~QPipe();
    00493
    00500         void reset();
    00501
    00502 #ifdef QPIPE_SECURE
    00503
    00508         bool create(bool secure = false);
    00509 #else
    00510
    00513         bool create();
    00514 #endif
    00515
    00519         QPipeEnd & readEnd() { return i; }
    00520
    00524         QPipeEnd & writeEnd() { return o; }
    00525
    00526 private:
    00527         Q_DISABLE_COPY(QPipe)
    00528
    00529         QPipeEnd i, o;
    00530 };
    00531
    00532 }
    00533
    00534 #endif