12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include <dlfcn.h> 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <pthread.h> 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdio.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <stdlib.h> 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <string.h> 10ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16Ben Murdoch#include <sys/mount.h> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <ppapi/cpp/completion_callback.h> 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <ppapi/cpp/instance.h> 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <ppapi/cpp/module.h> 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <ppapi/cpp/var.h> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "eightball.h" 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "nacl_io/nacl_io.h" 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "reverse.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(NACL_SDK_DEBUG) 22c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define CONFIG_NAME "Debug" 23c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 24c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define CONFIG_NAME "Release" 25c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 26c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 27868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#if defined __arm__ 28868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#define NACL_ARCH "arm" 29868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#elif defined __i686__ 30868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#define NACL_ARCH "x86_32" 31868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#elif defined __x86_64__ 32868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#define NACL_ARCH "x86_64" 33868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#else 34868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#error "Unknown arch" 35868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#endif 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 37b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)class DlOpenInstance : public pp::Instance { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 39b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) explicit DlOpenInstance(PP_Instance instance) 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) : pp::Instance(instance), 412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) eightball_so_(NULL), 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) reverse_so_(NULL), 432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) eightball_(NULL), 442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) reverse_(NULL), 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) tid_(NULL) {} 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 47b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) virtual ~DlOpenInstance() {} 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Helper function to post a message back to the JS and stdout functions. 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) void logmsg(const char* pStr) { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PostMessage(pp::Var(std::string("log:") + pStr)); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(stdout, pStr); 530f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) fprintf(stdout, "\n"); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Initialize the module, staring a worker thread to load the shared object. 57c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual bool Init(uint32_t argc, const char* argn[], const char* argv[]) { 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) nacl_io_init_ppapi(pp_instance(), 592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pp::Module::Get()->get_browser_interface()); 602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Mount a HTTP mount at /http. All reads from /http/* will read from the 612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // server. 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) mount("", "/http", "httpfs", 0, ""); 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 640f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Spawning thread to cache .so files..."); 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (pthread_create(&tid_, NULL, LoadLibrariesOnWorker, this)) { 660f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("ERROR; pthread_create() failed."); 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This function is called on a worker thread, and will call dlopen to load 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the shared object. In addition, note that this function does NOT call 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // dlclose, which would close the shared object and unload it from memory. 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void LoadLibrary() { 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) eightball_so_ = dlopen("libeightball.so", RTLD_LAZY); 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (eightball_so_ != NULL) { 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) intptr_t offset = (intptr_t) dlsym(eightball_so_, "Magic8Ball"); 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) eightball_ = (TYPE_eightball) offset; 802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (NULL == eightball_) { 81c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string message = "dlsym() returned NULL: "; 82c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) message += dlerror(); 83c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) logmsg(message.c_str()); 84c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 870f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Loaded libeightball.so"); 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 890f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("libeightball.so did not load"); 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 912a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 920f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) const char reverse_so_path[] = 930f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) "/http/glibc/" CONFIG_NAME "/libreverse_" NACL_ARCH ".so"; 940f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) reverse_so_ = dlopen(reverse_so_path, RTLD_LAZY); 952a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (reverse_so_ != NULL) { 962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) intptr_t offset = (intptr_t) dlsym(reverse_so_, "Reverse"); 972a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) reverse_ = (TYPE_reverse) offset; 982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (NULL == reverse_) { 99c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) std::string message = "dlsym() returned NULL: "; 100c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) message += dlerror(); 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) logmsg(message.c_str()); 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return; 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1040f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Loaded libreverse.so"); 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else { 1060f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("libreverse.so did not load"); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called by the browser to handle the postMessage() call in Javascript. 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void HandleMessage(const pp::Var& var_message) { 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!var_message.is_string()) { 1130f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Message is not a string."); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string message = var_message.AsString(); 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (message == "eightball") { 119c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (NULL == eightball_) { 1200f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Eightball library not loaded"); 1212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string ballmessage = "The Magic 8-Ball says: "; 1252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ballmessage += eightball_(); 1260f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) ballmessage += "!"; 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) logmsg(ballmessage.c_str()); 1292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } else if (message.find("reverse:") == 0) { 1302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (NULL == reverse_) { 1310f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) logmsg("Reverse library not loaded"); 1322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return; 1332a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1342a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1352a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string s = message.substr(strlen("reverse:")); 1362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) char* result = reverse_(s.c_str()); 1372a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string message = "Your string reversed: \""; 1392a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) message += result; 1400f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) message += "\""; 1412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) free(result); 1432a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1442a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) logmsg(message.c_str()); 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string errormsg = "Unexpected message: "; 1470f1bc08d4cfcc34181b0b5cbf065c40f687bf740Torne (Richard Coles) errormsg += message; 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) logmsg(errormsg.c_str()); 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 152c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) static void* LoadLibrariesOnWorker(void* pInst) { 153b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DlOpenInstance* inst = static_cast<DlOpenInstance*>(pInst); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) inst->LoadLibrary(); 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 1592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void* eightball_so_; 1602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void* reverse_so_; 1612a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) TYPE_eightball eightball_; 1622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) TYPE_reverse reverse_; 1632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) pthread_t tid_; 164c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)}; 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 166b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)class DlOpenModule : public pp::Module { 167c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) public: 168b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) DlOpenModule() : pp::Module() {} 169b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) virtual ~DlOpenModule() {} 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 171b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) // Create and return a DlOpenInstance object. 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual pp::Instance* CreateInstance(PP_Instance instance) { 173b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles) return new DlOpenInstance(instance); 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace pp { 178b2df76ea8fec9e32f6f3718986dba0d95315b29cTorne (Richard Coles)Module* CreateModule() { return new DlOpenModule(); } 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace pp 180