diff options
Diffstat (limited to 'src/gui/image/qppmhandler.cpp')
| -rw-r--r-- | src/gui/image/qppmhandler.cpp | 89 |
1 files changed, 47 insertions, 42 deletions
diff --git a/src/gui/image/qppmhandler.cpp b/src/gui/image/qppmhandler.cpp index fc48a33230..b03458bdd9 100644 --- a/src/gui/image/qppmhandler.cpp +++ b/src/gui/image/qppmhandler.cpp @@ -1,12 +1,11 @@ /**************************************************************************** ** -** Copyright (C) 2021 The Qt Company Ltd. +** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtGui module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:COMM$ -** +** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the @@ -15,25 +14,26 @@ ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** -** $QT_END_LICENSE$ -** -** -** -** -** -** -** -** -** -** -** -** -** -** -** -** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. ** +** $QT_END_LICENSE$ ** ****************************************************************************/ @@ -63,7 +63,7 @@ static void discard_pbm_line(QIODevice *d) } while (res > 0 && buf[res-1] != '\n'); } -static int read_pbm_int(QIODevice *d) +static int read_pbm_int(QIODevice *d, bool *ok) { char c; int val = -1; @@ -97,6 +97,8 @@ static int read_pbm_int(QIODevice *d) else break; } + if (val < 0) + *ok = false; return hasOverflow ? -1 : val; } @@ -113,16 +115,17 @@ static bool read_pbm_header(QIODevice *device, char& type, int& w, int& h, int& if (type < '1' || type > '6') return false; - w = read_pbm_int(device); // get image width - h = read_pbm_int(device); // get image height + bool ok = true; + w = read_pbm_int(device, &ok); // get image width + h = read_pbm_int(device, &ok); // get image height if (type == '1' || type == '4') mcc = 1; // ignore max color component else - mcc = read_pbm_int(device); // get max color component + mcc = read_pbm_int(device, &ok); // get max color component - if (w <= 0 || w > 32767 || h <= 0 || h > 32767 || mcc <= 0 || mcc > 0xffff) - return false; // weird P.M image + if (!ok || w <= 0 || w > 32767 || h <= 0 || h > 32767 || mcc <= 0 || mcc > 0xffff) + return false; // weird P.M image return true; } @@ -233,18 +236,18 @@ static bool read_pbm_body(QIODevice *device, char type, int w, int h, int mcc, Q } else { // read ascii data uchar *p; int n; - char buf; - for (y = 0; (y < h) && (device->peek(&buf, 1) == 1); y++) { + bool ok = true; + for (y = 0; y < h && ok; y++) { p = outImage->scanLine(y); n = pbm_bpl; if (nbits == 1) { int b; int bitsLeft = w; - while (n--) { + while (n-- && ok) { b = 0; for (int i=0; i<8; i++) { if (i < bitsLeft) - b = (b << 1) | (read_pbm_int(device) & 1); + b = (b << 1) | (read_pbm_int(device, &ok) & 1); else b = (b << 1) | (0 & 1); // pad it our self if we need to } @@ -253,36 +256,38 @@ static bool read_pbm_body(QIODevice *device, char type, int w, int h, int mcc, Q } } else if (nbits == 8) { if (mcc == 255) { - while (n--) { - *p++ = read_pbm_int(device); + while (n-- && ok) { + *p++ = read_pbm_int(device, &ok); } } else { - while (n--) { - *p++ = (read_pbm_int(device) & 0xffff) * 255 / mcc; + while (n-- && ok) { + *p++ = (read_pbm_int(device, &ok) & 0xffff) * 255 / mcc; } } } else { // 32 bits n /= 4; int r, g, b; if (mcc == 255) { - while (n--) { - r = read_pbm_int(device); - g = read_pbm_int(device); - b = read_pbm_int(device); + while (n-- && ok) { + r = read_pbm_int(device, &ok); + g = read_pbm_int(device, &ok); + b = read_pbm_int(device, &ok); *((QRgb*)p) = qRgb(r, g, b); p += 4; } } else { - while (n--) { - r = read_pbm_int(device); - g = read_pbm_int(device); - b = read_pbm_int(device); + while (n-- && ok) { + r = read_pbm_int(device, &ok); + g = read_pbm_int(device, &ok); + b = read_pbm_int(device, &ok); *((QRgb*)p) = scale_pbm_color(mcc, r, g, b); p += 4; } } } } + if (!ok) + return false; } if (format == QImage::Format_Mono) { |