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NPAPI links

posted Jun 6, 2011, 6:21 PM by William Shallum   [ updated Jul 5, 2015, 1:22 AM ]
For FF 1.5 (released almost 6 years ago), the most recent GLIBC versioned symbol appears to be v 2.3.
  • The NPN* functions are located in the glue code (npunix.c / npwin.c) and implemented by calling the browser-passed function pointers
  • The value to return from invoke after calling setexception is false, not true.
  • NP_GetValue is an *exported* function. It is used to get name / description data where the registry is not used.
  • NP_ = exported from plugin, NPP_ = in plugin function table, NPN_ = in browser function table
  • NP_GetPluginVersion has no documentation in MDC. It is called to get the plugin version. See http://mxr.mozilla.org/mozilla2.0/source/modules/plugin/base/src/nsPluginsDirUnix.cpp#349 for signature. Strangely the npfunctions.h header says it returns a char * instead of a const char *. It looks like we can safely cast away the constness as it is used in a constant manner anyway (just passed to strdup).  
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