Linux plugin loader loads and unloads .so files.

Review URL: http://codereview.chromium.org/18539


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@8535 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 45 insertions, 5 deletions

diff --git a/webkit/glue/plugins/plugin_lib_linux.cc b/webkit/glue/plugins/plugin_lib_linux.cc
index 47d6ebf..8ee5178 100644
--- a/webkit/glue/plugins/plugin_lib_linux.cc
+++ b/webkit/glue/plugins/plugin_lib_linux.cc
@@ -6,6 +6,10 @@
 
 #include "webkit/glue/plugins/plugin_lib.h"
 
+#include <dlfcn.h>
+#include <errno.h>
+#include <string.h>
+
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "webkit/glue/plugins/plugin_list.h"
@@ -15,21 +19,25 @@ namespace NPAPI {
 // static
 PluginLib::NativeLibrary PluginLib::LoadNativeLibrary(
     const FilePath& library_path) {
-  NOTIMPLEMENTED();
-  return NULL;
+  void* dl = dlopen(library_path.value().c_str(), RTLD_LAZY);
+  if (!dl)
+    NOTREACHED() << "dlopen failed: " << strerror(errno);
+
+  return dl;
 }
 
 // static
 void PluginLib::UnloadNativeLibrary(NativeLibrary library) {
-  NOTIMPLEMENTED();
+  int ret = dlclose(library);
+  if (ret < 0)
+    NOTREACHED() << "dlclose failed: " << strerror(errno);
 }
 
 // static
 void* PluginLib::GetFunctionPointerFromNativeLibrary(
     NativeLibrary library,
     NativeLibraryFunctionNameType name) {
-  NOTIMPLEMENTED();
-  return NULL;
+  return dlsym(library, name);
 }
 
 bool PluginLib::ReadWebPluginInfo(const FilePath& filename,
@@ -37,10 +45,42 @@ bool PluginLib::ReadWebPluginInfo(const FilePath& filename,
                                   NP_GetEntryPointsFunc* np_getentrypoints,
                                   NP_InitializeFunc* np_initialize,
                                   NP_ShutdownFunc* np_shutdown) {
+  // The file to reference is:
+  // http://mxr.mozilla.org/firefox/source/modules/plugin/base/src/nsPluginsDirUnix.cpp
+
   *np_getentrypoints = NULL;
   *np_initialize = NULL;
   *np_shutdown = NULL;
 
+  void* dl = LoadNativeLibrary(filename);
+  if (!dl)
+    return false;
+
+  void* ns_get_factory = GetFunctionPointerFromNativeLibrary(dl,
+                                                             "NSGetFactory");
+
+  if (ns_get_factory) {
+    // Mozilla calls this an "almost-new-style plugin", then proceeds to
+    // poke at it via XPCOM.  Our testing plugin doesn't use it.
+    NOTIMPLEMENTED() << ": " << filename.value()
+                     << " is an \"almost-new-style plugin\".";
+    UnloadNativeLibrary(dl);
+    return false;
+  }
+
+  // See comments in plugin_lib_mac regarding this symbol.
+  typedef const char* (*GetMimeDescriptionType)();
+  GetMimeDescriptionType ns_get_mime_description =
+      reinterpret_cast<GetMimeDescriptionType>(
+          GetFunctionPointerFromNativeLibrary(dl, "NP_GetMIMEDescription"));
+  const char* description = "";
+  if (ns_get_mime_description)
+    description = ns_get_mime_description();
+
+  // TODO(port): pick up from here.
+  LOG(INFO) << description;
+  NOTIMPLEMENTED();
+  UnloadNativeLibrary(dl);
   return false;
 }