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      1 /*
      2  * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
      3  * Copyright (C) 2008 Collabora Ltd. All rights reserved.
      4  * Copyright (C) 2008 Nuanti Ltd.
      5  * Copyright (C) 2008 Novell Inc. All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     23  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     24  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "PluginPackage.h"
     31 
     32 #include "GOwnPtrGtk.h"
     33 #include "GRefPtrGtk.h"
     34 #include "MIMETypeRegistry.h"
     35 #include "NotImplemented.h"
     36 #include "npruntime_impl.h"
     37 #include "PluginDebug.h"
     38 #include <gio/gio.h>
     39 #include <wtf/text/CString.h>
     40 
     41 namespace WebCore {
     42 
     43 bool PluginPackage::fetchInfo()
     44 {
     45 #if defined(XP_UNIX)
     46     if (!load())
     47         return false;
     48 
     49     NP_GetMIMEDescriptionFuncPtr NP_GetMIMEDescription = 0;
     50     NPP_GetValueProcPtr NPP_GetValue = 0;
     51 
     52     g_module_symbol(m_module, "NP_GetMIMEDescription", (void**)&NP_GetMIMEDescription);
     53     g_module_symbol(m_module, "NP_GetValue", (void**)&NPP_GetValue);
     54 
     55     if (!NP_GetMIMEDescription || !NPP_GetValue)
     56         return false;
     57 
     58     char* buffer = 0;
     59     NPError err = NPP_GetValue(0, NPPVpluginNameString, &buffer);
     60     if (err == NPERR_NO_ERROR)
     61         m_name = buffer;
     62 
     63     buffer = 0;
     64     err = NPP_GetValue(0, NPPVpluginDescriptionString, &buffer);
     65     if (err == NPERR_NO_ERROR) {
     66         m_description = buffer;
     67         determineModuleVersionFromDescription();
     68     }
     69 
     70     const gchar* types = NP_GetMIMEDescription();
     71     if (!types)
     72         return true;
     73 
     74     gchar** mimeDescs = g_strsplit(types, ";", -1);
     75     for (int i = 0; mimeDescs[i] && mimeDescs[i][0]; i++) {
     76         GOwnPtr<char> mime(g_utf8_strdown(mimeDescs[i], -1));
     77         gchar** mimeData = g_strsplit(mime.get(), ":", 3);
     78         if (g_strv_length(mimeData) < 3) {
     79             g_strfreev(mimeData);
     80             continue;
     81         }
     82 
     83         String description = String::fromUTF8(mimeData[2]);
     84         gchar** extensions = g_strsplit(mimeData[1], ",", -1);
     85 
     86         Vector<String> extVector;
     87         for (int j = 0; extensions[j]; j++)
     88             extVector.append(String::fromUTF8(extensions[j]));
     89 
     90         determineQuirks(mimeData[0]);
     91         m_mimeToExtensions.add(mimeData[0], extVector);
     92         m_mimeToDescriptions.add(mimeData[0], description);
     93 
     94         g_strfreev(extensions);
     95         g_strfreev(mimeData);
     96     }
     97     g_strfreev(mimeDescs);
     98 
     99     return true;
    100 #else
    101     notImplemented();
    102     return false;
    103 #endif
    104 }
    105 
    106 #if defined(XP_UNIX)
    107 static int webkitgtkXError(Display* xdisplay, XErrorEvent* error)
    108 {
    109     gchar errorMessage[64];
    110     XGetErrorText(xdisplay, error->error_code, errorMessage, 63);
    111     g_warning("The program '%s' received an X Window System error.\n"
    112               "This probably reflects a bug in the Adobe Flash plugin.\n"
    113               "The error was '%s'.\n"
    114               "  (Details: serial %ld error_code %d request_code %d minor_code %d)\n",
    115               g_get_prgname(), errorMessage,
    116               error->serial, error->error_code,
    117               error->request_code, error->minor_code);
    118     return 0;
    119 }
    120 #endif
    121 
    122 static bool moduleMixesGtkSymbols(GModule* module)
    123 {
    124     gpointer symbol;
    125 #ifdef GTK_API_VERSION_2
    126     return g_module_symbol(module, "gtk_application_get_type", &symbol);
    127 #else
    128     return g_module_symbol(module, "gtk_object_get_type", &symbol);
    129 #endif
    130 }
    131 
    132 
    133 bool PluginPackage::load()
    134 {
    135     if (m_isLoaded) {
    136         m_loadCount++;
    137         return true;
    138     }
    139 
    140     GOwnPtr<gchar> finalPath(g_strdup(m_path.utf8().data()));
    141     while (g_file_test(finalPath.get(), G_FILE_TEST_IS_SYMLINK)) {
    142         GRefPtr<GFile> file = adoptGRef(g_file_new_for_path(finalPath.get()));
    143         GRefPtr<GFile> dir = adoptGRef(g_file_get_parent(file.get()));
    144         GOwnPtr<gchar> linkPath(g_file_read_link(finalPath.get(), 0));
    145         GRefPtr<GFile> resolvedFile = adoptGRef(g_file_resolve_relative_path(dir.get(), linkPath.get()));
    146         finalPath.set(g_file_get_path(resolvedFile.get()));
    147     }
    148 
    149     // No joke. If there is a netscape component in the path, go back
    150     // to the symlink, as flash breaks otherwise.
    151     // See http://src.chromium.org/viewvc/chrome/trunk/src/webkit/glue/plugins/plugin_list_posix.cc
    152     GOwnPtr<gchar> baseName(g_path_get_basename(finalPath.get()));
    153     if (!g_strcmp0(baseName.get(), "libflashplayer.so")
    154         && g_strstr_len(finalPath.get(), -1, "/netscape/"))
    155         finalPath.set(g_strdup(m_path.utf8().data()));
    156 
    157     m_module = g_module_open(finalPath.get(), G_MODULE_BIND_LOCAL);
    158 
    159     if (!m_module) {
    160         LOG(Plugins,"Module Load Failed :%s, Error:%s\n", (m_path.utf8()).data(), g_module_error());
    161         return false;
    162     }
    163 
    164     if (moduleMixesGtkSymbols(m_module)) {
    165         LOG(Plugins, "Module '%s' mixes GTK+ 2 and GTK+ 3 symbols, ignoring plugin.\n", m_path.utf8().data());
    166         g_module_close(m_module);
    167         return false;
    168     }
    169 
    170     m_isLoaded = true;
    171 
    172 #if defined(XP_UNIX)
    173     if (!g_strcmp0(baseName.get(), "libflashplayer.so")) {
    174         // Flash plugin can produce X errors that are handled by the GDK X error handler, which
    175         // exits the process. Since we don't want to crash due to flash bugs, we install a
    176         // custom error handler to show a warning when a X error happens without aborting.
    177         XSetErrorHandler(webkitgtkXError);
    178     }
    179 #endif
    180 
    181     NP_InitializeFuncPtr NP_Initialize = 0;
    182     m_NPP_Shutdown = 0;
    183 
    184     NPError npErr;
    185 
    186     g_module_symbol(m_module, "NP_Initialize", (void**)&NP_Initialize);
    187     g_module_symbol(m_module, "NP_Shutdown", (void**)&m_NPP_Shutdown);
    188 
    189     if (!NP_Initialize || !m_NPP_Shutdown)
    190         goto abort;
    191 
    192     memset(&m_pluginFuncs, 0, sizeof(m_pluginFuncs));
    193     m_pluginFuncs.size = sizeof(m_pluginFuncs);
    194 
    195     initializeBrowserFuncs();
    196 
    197 #if defined(XP_UNIX)
    198     npErr = NP_Initialize(&m_browserFuncs, &m_pluginFuncs);
    199 #else
    200     npErr = NP_Initialize(&m_browserFuncs);
    201 #endif
    202     if (npErr != NPERR_NO_ERROR)
    203         goto abort;
    204 
    205     m_loadCount++;
    206     return true;
    207 
    208 abort:
    209     unloadWithoutShutdown();
    210     return false;
    211 }
    212 
    213 uint16_t PluginPackage::NPVersion() const
    214 {
    215     return NPVERS_HAS_PLUGIN_THREAD_ASYNC_CALL;
    216 }
    217 }
    218