Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 219 insertions, 0 deletions

diff --git a/cppuhelper/source/findsofficepath.c b/cppuhelper/source/findsofficepath.c
new file mode 100644
index 000000000..a46cfb88a
--- /dev/null
+++ b/cppuhelper/source/findsofficepath.c
@@ -0,0 +1,219 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <cppuhelper/findsofficepath.h>
+
+#if defined(_WIN32)
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+/*
+ * Gets the installation path from the Windows Registry for the specified
+ * registry key.
+ *
+ * @param hroot       open handle to predefined root registry key
+ * @param subKeyName  name of the subkey to open
+ *
+ * @return the installation path or NULL, if no installation was found or
+ *         if an error occurred
+ */
+static wchar_t* getPathFromRegistryKey( HKEY hroot, const wchar_t* subKeyName )
+{
+    HKEY hkey;
+    DWORD type;
+    wchar_t* data = NULL;
+    DWORD size;
+
+    /* open the specified registry key */
+    if ( RegOpenKeyExW( hroot, subKeyName, 0, KEY_READ, &hkey ) != ERROR_SUCCESS )
+    {
+        return NULL;
+    }
+
+    /* find the type and size of the default value */
+    if ( RegQueryValueExW( hkey, NULL, NULL, &type, NULL, &size) != ERROR_SUCCESS )
+    {
+        RegCloseKey( hkey );
+        return NULL;
+    }
+
+    /* get memory to hold the default value */
+    data = (wchar_t*) malloc( size + sizeof(wchar_t) );
+
+    /* read the default value */
+    if ( RegQueryValueExW( hkey, NULL, NULL, &type, (LPBYTE) data, &size ) != ERROR_SUCCESS )
+    {
+        RegCloseKey( hkey );
+        free( data );
+        return NULL;
+    }
+
+    // According to https://msdn.microsoft.com/en-us/ms724911, If the data has the REG_SZ,
+    // REG_MULTI_SZ or REG_EXPAND_SZ type, the string may not have been stored with the
+    // proper terminating null characters
+    data[size / sizeof(wchar_t)] = 0;
+
+    /* release registry key handle */
+    RegCloseKey( hkey );
+
+    return data;
+}
+
+/*
+ * Gets the installation path from the Windows Registry.
+ *
+ * @return the installation path or NULL, if no installation was found or
+ *         if an error occurred
+ */
+static wchar_t* platformSpecific(void)
+{
+    const wchar_t* UNOPATHVARNAME = L"UNO_PATH";
+
+    /* get the installation path from the UNO_PATH environment variable */
+    wchar_t* env = _wgetenv(UNOPATHVARNAME);
+
+    if (env && env[0])
+    {
+        return wcsdup(env);
+    }
+
+    const wchar_t* SUBKEYNAME = L"Software\\LibreOffice\\UNO\\InstallPath";
+
+    /* read the key's default value from HKEY_CURRENT_USER */
+    wchar_t* path = getPathFromRegistryKey( HKEY_CURRENT_USER, SUBKEYNAME );
+
+    if ( path == NULL )
+    {
+        /* read the key's default value from HKEY_LOCAL_MACHINE */
+        path = getPathFromRegistryKey( HKEY_LOCAL_MACHINE, SUBKEYNAME );
+    }
+
+    return path;
+}
+
+#else
+
+#include <limits.h>
+
+/*
+ * Gets the installation path from the PATH environment variable.
+ *
+ * <p>An installation is found, if the executable 'soffice' or a symbolic link
+ * is in one of the directories listed in the PATH environment variable.</p>
+ *
+ * @return the installation path or NULL, if no installation was found or
+ *         if an error occurred
+ */
+static char* platformSpecific(void)
+{
+    const char* UNOPATHVARNAME = "UNO_PATH";
+
+    /* get the installation path from the UNO_PATH environment variable */
+    char* env = getenv(UNOPATHVARNAME);
+
+    const int SEPARATOR = '/';
+    const char* PATHSEPARATOR = ":";
+    const char* PATHVARNAME = "PATH";
+    const char* APPENDIX = "/libreoffice";
+
+    char* path = NULL;
+    char* str = NULL;
+    char* dir = NULL;
+    char* sep = NULL;
+
+    char buffer[PATH_MAX];
+    int pos;
+
+    if (env && env[0])
+    {
+        return strdup(env);
+    }
+
+    /* get the value of the PATH environment variable */
+    env = getenv( PATHVARNAME );
+    if (env == NULL)
+        return NULL;
+
+    str = strdup( env );
+    if (str == NULL)
+        return NULL;
+
+    /* get the tokens separated by ':' */
+    dir = strtok( str, PATHSEPARATOR );
+
+    while ( dir )
+    {
+        /* construct soffice file path */
+        char* resolved = NULL;
+        char* file = (char*) malloc( strlen( dir ) + strlen( APPENDIX ) + 1 );
+        if (file == NULL)
+        {
+            free(str);
+            return NULL;
+        }
+
+        strcpy( file, dir );
+        strcat( file, APPENDIX );
+
+        /* resolve symbolic link */
+        resolved = realpath( file, buffer );
+        if ( resolved != NULL )
+        {
+            /* get path to program directory */
+            sep = strrchr( resolved, SEPARATOR );
+
+            if ( sep != NULL )
+            {
+                pos = sep - resolved;
+                path = (char*) malloc( pos + 1 );
+                strncpy( path, resolved, pos );
+                path[ pos ] = '\0';
+                free( file );
+                break;
+            }
+        }
+
+        dir = strtok( NULL, PATHSEPARATOR );
+        free( file );
+    }
+
+    free( str );
+
+    return path;
+}
+
+#endif
+
+#if defined(_WIN32)
+wchar_t*
+#else
+char*
+#endif
+cppuhelper_detail_findSofficePath(void)
+{
+    return platformSpecific();
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */