From a2371edc51a3837d37bd99a93fc937e99eb34408 Mon Sep 17 00:00:00 2001
From: kh1 <karsten.heimrich@digia.com>
Date: Wed, 29 May 2013 14:28:27 +0200
Subject: Properly calculate the file size for symlinks.

Task-number: QTIFW-137

Change-Id: I8a39094228bbb82ff99adfa814cda79634f71274
Reviewed-by: Niels Weber <niels.weber@digia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>
---
 src/libs/installer/fileutils.cpp | 34 ++++++++++++++++++++++++++++++++++
 src/libs/installer/fileutils.h   |  3 +++
 2 files changed, 37 insertions(+)

(limited to 'src/libs')

diff --git a/src/libs/installer/fileutils.cpp b/src/libs/installer/fileutils.cpp
index 77a54ed4d..9fb782fec 100644
--- a/src/libs/installer/fileutils.cpp
+++ b/src/libs/installer/fileutils.cpp
@@ -53,6 +53,12 @@
 
 #include <errno.h>
 
+#ifdef Q_OS_UNIX
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#endif
+
 using namespace QInstaller;
 
 
@@ -469,6 +475,7 @@ QString QInstaller::createTemporaryDirectory(const QString &templ)
 # endif
 #include <windows.h>
 
+
 QString QInstaller::getShortPathName(const QString &name)
 {
     if (name.isEmpty())
@@ -607,4 +614,31 @@ void QInstaller::setApplicationIcon(const QString &application, const QString &i
     EndUpdateResourceW(updateRes, false);
 }
 
+static quint64 symlinkSizeWin(const QString &path)
+{
+    WIN32_FILE_ATTRIBUTE_DATA fileAttributeData;
+    if (GetFileAttributesEx((wchar_t*)(path.utf16()), GetFileExInfoStandard, &fileAttributeData) == FALSE)
+        return quint64(0);
+
+    LARGE_INTEGER size;
+    size.LowPart = fileAttributeData.nFileSizeLow;
+    size.HighPart = fileAttributeData.nFileSizeHigh;
+    return quint64(size.QuadPart);
+}
+
 #endif
+
+quint64 QInstaller::fileSize(const QFileInfo &info)
+{
+    if (!info.isSymLink())
+        return info.size();
+
+#ifndef Q_OS_WIN
+    struct stat buffer;
+    if (lstat(qPrintable(info.absoluteFilePath()), &buffer) != 0)
+        return quint64(0);
+    return quint64(buffer.st_size);
+#else
+    return symlinkSizeWin(info.absoluteFilePath());
+#endif
+}
diff --git a/src/libs/installer/fileutils.h b/src/libs/installer/fileutils.h
index 0450717cb..9bbcec72a 100644
--- a/src/libs/installer/fileutils.h
+++ b/src/libs/installer/fileutils.h
@@ -49,6 +49,7 @@
 
 QT_BEGIN_NAMESPACE
 class QByteArray;
+class QFileInfo;
 class QIODevice;
 class QUrl;
 QT_END_NAMESPACE
@@ -120,6 +121,8 @@ private:
     void INSTALLER_EXPORT mkdir(const QString &path);
     void INSTALLER_EXPORT mkpath(const QString &path);
 
+    quint64 INSTALLER_EXPORT fileSize(const QFileInfo &info);
+
 #ifdef Q_OS_WIN
     QString INSTALLER_EXPORT getLongPathName(const QString &name);
     QString INSTALLER_EXPORT getShortPathName(const QString &name);
-- 
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