The Tor Browser: nsprpub/pr/tests/multiacc.c@97036ab72558 (annotated)

nsprpub/pr/tests/multiacc.c@97036ab72558 (annotated)

nsprpub/pr/tests/multiacc.c

Tue, 06 Jan 2015 21:39:09 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Tue, 06 Jan 2015 21:39:09 +0100
branch: TOR_BUG_9701
changeset 8: 97036ab72558
permissions: -rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  * File: multiacc.c
  *
  * Description:
  * This test creates multiple threads that accept on the
  * same listening socket.
  */
 #include "nspr.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #define NUM_SERVER_THREADS 10
 static int num_server_threads = NUM_SERVER_THREADS;
 static PRThreadScope thread_scope = PR_GLOBAL_THREAD;
 static PRBool exit_flag = PR_FALSE;
 static void ServerThreadFunc(void *arg)
 {
     PRFileDesc *listenSock = (PRFileDesc *) arg;
     PRFileDesc *acceptSock;
     PRErrorCode err;
     PRStatus status;
     while (!exit_flag) {
         acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
         if (NULL == acceptSock) {
             err = PR_GetError();
             if (PR_PENDING_INTERRUPT_ERROR == err) {
                 printf("server thread is interrupted\n");
                 fflush(stdout);
                 continue;
             }
             fprintf(stderr, "PR_Accept failed: %d\n", err);
             exit(1);
         }
         status = PR_Close(acceptSock);
         if (PR_FAILURE == status) {
             fprintf(stderr, "PR_Close failed\n");
             exit(1);
         }
     }
 }
 int main(int argc, char **argv)
 {
     PRNetAddr serverAddr;
     PRFileDesc *dummySock;
     PRFileDesc *listenSock;
     PRFileDesc *clientSock;
     PRThread *dummyThread;
     PRThread **serverThreads;
     PRStatus status;
     PRUint16 port;
     int idx;
     PRInt32 nbytes;
     char buf[1024];
     serverThreads = (PRThread **)
             PR_Malloc(num_server_threads * sizeof(PRThread *));
     if (NULL == serverThreads) {
         fprintf(stderr, "PR_Malloc failed\n");
         exit(1);
     }
     /*
      * Create a dummy listening socket and have the first
      * (dummy) thread listen on it.  This is to ensure that
      * the first thread becomes the I/O continuation thread
      * in the pthreads implementation (see ptio.c) and remains
      * so throughout the test, so that we never have to
      * recycle the I/O continuation thread.
      */
     dummySock = PR_NewTCPSocket();
     if (NULL == dummySock) {
         fprintf(stderr, "PR_NewTCPSocket failed\n");
         exit(1);
     }
     memset(&serverAddr, 0, sizeof(serverAddr));
     status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_InitializeNetAddr failed\n");
         exit(1);
     }
     status = PR_Bind(dummySock, &serverAddr);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Bind failed\n");
         exit(1);
     }
     status = PR_Listen(dummySock, 5);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Listen failed\n");
         exit(1);
     }
     listenSock = PR_NewTCPSocket();
     if (NULL == listenSock) {
         fprintf(stderr, "PR_NewTCPSocket failed\n");
         exit(1);
     }
     memset(&serverAddr, 0, sizeof(serverAddr));
     status = PR_InitializeNetAddr(PR_IpAddrAny, 0, &serverAddr);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_InitializeNetAddr failed\n");
         exit(1);
     }
     status = PR_Bind(listenSock, &serverAddr);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Bind failed\n");
         exit(1);
     }
     status = PR_GetSockName(listenSock, &serverAddr);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_GetSockName failed\n");
         exit(1);
     }
     port = PR_ntohs(serverAddr.inet.port);
     status = PR_Listen(listenSock, 5);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Listen failed\n");
         exit(1);
     }
     printf("creating dummy thread\n");
     fflush(stdout);
     dummyThread = PR_CreateThread(PR_USER_THREAD,
             ServerThreadFunc, dummySock, PR_PRIORITY_NORMAL,
             thread_scope, PR_JOINABLE_THREAD, 0);
     if (NULL == dummyThread) {
         fprintf(stderr, "PR_CreateThread failed\n");
         exit(1);
     }
     printf("sleeping one second before creating server threads\n");
     fflush(stdout);
     PR_Sleep(PR_SecondsToInterval(1));
     for (idx = 0; idx < num_server_threads; idx++) {
         serverThreads[idx] = PR_CreateThread(PR_USER_THREAD,
                 ServerThreadFunc, listenSock, PR_PRIORITY_NORMAL,
                 thread_scope, PR_JOINABLE_THREAD, 0);
         if (NULL == serverThreads[idx]) {
             fprintf(stderr, "PR_CreateThread failed\n");
             exit(1);
         }
     }
     memset(&serverAddr, 0, sizeof(serverAddr));
     PR_InitializeNetAddr(PR_IpAddrLoopback, port, &serverAddr);
     clientSock = PR_NewTCPSocket();
     if (NULL == clientSock) {
         fprintf(stderr, "PR_NewTCPSocket failed\n");
         exit(1);
     }
     printf("sleeping one second before connecting\n");
     fflush(stdout);
     PR_Sleep(PR_SecondsToInterval(1));
     status = PR_Connect(clientSock, &serverAddr, PR_INTERVAL_NO_TIMEOUT);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Connect failed\n");
         exit(1);
     }
     nbytes = PR_Read(clientSock, buf, sizeof(buf));
     if (nbytes != 0) {
         fprintf(stderr, "expected 0 bytes but got %d bytes\n", nbytes);
         exit(1);
     }
     status = PR_Close(clientSock);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     printf("sleeping one second before shutting down server threads\n");
     fflush(stdout);
     PR_Sleep(PR_SecondsToInterval(1));
     exit_flag = PR_TRUE;
     status = PR_Interrupt(dummyThread);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Interrupt failed\n");
         exit(1);
     }
     status = PR_JoinThread(dummyThread);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_JoinThread failed\n");
         exit(1);
     }
     for (idx = 0; idx < num_server_threads; idx++) {
         status = PR_Interrupt(serverThreads[idx]);
         if (PR_FAILURE == status) {
             fprintf(stderr, "PR_Interrupt failed\n");
             exit(1);
         }
         status = PR_JoinThread(serverThreads[idx]);
         if (PR_FAILURE == status) {
             fprintf(stderr, "PR_JoinThread failed\n");
             exit(1);
         }
     }
     PR_Free(serverThreads);
     status = PR_Close(dummySock);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     status = PR_Close(listenSock);
     if (PR_FAILURE == status) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     printf("PASS\n");
     return 0;
 }

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nsprpub/pr/tests/multiacc.c@97036ab72558 (annotated)

nsprpub/pr/tests/multiacc.c