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      1 /*
      2  * Copyright 2009, The Android Open Source Project
      3  * Copyright (C) 2007 Holger Hans Peter Freyther
      4  * All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     16  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     18  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     19  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     20  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     22  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     23  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     25  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "config.h"
     29 #include "FileSystem.h"
     30 
     31 #include "CString.h"
     32 #include "StringBuilder.h"
     33 #include "cutils/log.h"
     34 #include <dirent.h>
     35 #include <dlfcn.h>
     36 #include <errno.h>
     37 #include <fnmatch.h>
     38 #include <sys/stat.h>
     39 
     40 namespace WebCore {
     41 
     42 // Global static used to store the base to the plugin path.
     43 // This is set in WebSettings.cpp
     44 String sPluginPath;
     45 
     46 CString fileSystemRepresentation(const String& path)
     47 {
     48     return path.utf8();
     49 }
     50 
     51 CString openTemporaryFile(const char* prefix, PlatformFileHandle& handle)
     52 {
     53     int number = rand() % 10000 + 1;
     54     CString filename;
     55     do {
     56         StringBuilder builder;
     57         builder.append(sPluginPath);
     58         builder.append('/');
     59         builder.append(prefix);
     60         builder.append(String::number(number));
     61         filename = builder.toString().utf8();
     62         const char* fstr = filename.data();
     63         handle = open(filename.data(), O_WRONLY | O_CREAT | O_EXCL, S_IRUSR | S_IWUSR);
     64         number++;
     65 
     66         if (handle != -1)
     67             return filename;
     68     } while (errno == EEXIST);
     69 
     70     return CString();
     71 }
     72 
     73 bool unloadModule(PlatformModule module)
     74 {
     75     return !dlclose(module);
     76 }
     77 
     78 void closeFile(PlatformFileHandle& handle)
     79 {
     80     if (isHandleValid(handle)) {
     81         close(handle);
     82         handle = invalidPlatformFileHandle;
     83     }
     84 }
     85 
     86 int writeToFile(PlatformFileHandle handle, const char* data, int length)
     87 {
     88     int totalBytesWritten = 0;
     89     while (totalBytesWritten < length) {
     90         int bytesWritten = write(handle, data, (size_t)(length - totalBytesWritten));
     91         if (bytesWritten < 0 && errno != EINTR)
     92             return -1;
     93         if (bytesWritten > 0)
     94             totalBytesWritten += bytesWritten;
     95     }
     96 
     97     return totalBytesWritten;
     98 }
     99 
    100 String homeDirectoryPath()
    101 {
    102     return sPluginPath;
    103 }
    104 
    105 Vector<String> listDirectory(const String& path, const String& filter)
    106 {
    107     Vector<String> entries;
    108     CString cpath = path.utf8();
    109     CString cfilter = filter.utf8();
    110     DIR* dir = opendir(cpath.data());
    111     if (dir) {
    112         struct dirent* dp;
    113         while (dp = readdir(dir)) {
    114             const char* name = dp->d_name;
    115             if (!strcmp(name, ".") || !strcmp(name, ".."))
    116                 continue;
    117             if (fnmatch(cfilter.data(), name, 0))
    118                 continue;
    119             char filePath[1024];
    120             if ((int) (sizeof(filePath) - 1) < snprintf(filePath,
    121                     sizeof(filePath), "%s/%s", cpath.data(), name)) {
    122                 continue; // buffer overflow
    123             }
    124             entries.append(filePath);
    125         }
    126         closedir(dir);
    127     }
    128     return entries;
    129 }
    130 
    131 } // namespace WebCore
    132