DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Untracked file

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
/* -*- 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/. */

/*
 * Test: zerolen.c 
 *
 * Description: a test for Bugzilla bug #17699.  We perform
 * the same test for PR_Writev, PR_Write, and PR_Send.  In
 * each test the server thread first fills up the connection
 * to the client so that the next write operation will fail
 * with EAGAIN.  Then it calls PR_Writev, PR_Write, or PR_Send
 * with a zero-length buffer.  The client thread initially
 * does not read so that the connection can be filled up.
 * Then it empties the connection so that the server thread's
 * PR_Writev, PR_Write, or PR_Send call can succeed.
 *
 * Bug #17699 is specific to the pthreads version on Unix,
 * so on other platforms this test does nothing.
 */

#ifndef XP_UNIX

#include <stdio.h>

int main(int argc, char **argv)
{
    printf("PASS\n");
    return 0;
}

#else /* XP_UNIX */

#include "nspr.h"
#include "private/pprio.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>

static void ClientThread(void *arg)
{
    PRFileDesc *sock;
    PRNetAddr addr;
    PRUint16 port = (PRUint16) arg;
    char buf[1024];
    PRInt32 nbytes;

    sock = PR_NewTCPSocket();
    if (NULL == sock) {
        fprintf(stderr, "PR_NewTCPSocket failed\n");
        exit(1);
    }
    if (PR_InitializeNetAddr(PR_IpAddrLoopback, port, &addr) == PR_FAILURE) {
        fprintf(stderr, "PR_InitializeNetAddr failed\n");
        exit(1);
    }
    if (PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT) == PR_FAILURE) {
        fprintf(stderr, "PR_Connect failed\n");
        exit(1);
    }
    /*
     * Sleep 5 seconds to force the server thread to get EAGAIN.
     */
    if (PR_Sleep(PR_SecondsToInterval(5)) == PR_FAILURE) {
        fprintf(stderr, "PR_Sleep failed\n");
        exit(1);
    }
    /*
     * Then start reading.
     */
    while ((nbytes = PR_Read(sock, buf, sizeof(buf))) > 0) {
        /* empty loop body */
    }
    if (-1 == nbytes) {
        fprintf(stderr, "PR_Read failed\n");
        exit(1);
    }
    if (PR_Close(sock) == PR_FAILURE) {
        fprintf(stderr, "PR_Close failed\n");
        exit(1);
    }
}

int main()
{
    PRFileDesc *listenSock;
    PRFileDesc *acceptSock;
    int osfd;
    PRThread *clientThread;
    PRNetAddr addr;
    char buf[1024];
    PRInt32 nbytes;
    PRIOVec iov;
#ifdef SYMBIAN
    int loopcount=0;
#endif

    memset(buf, 0, sizeof(buf)); /* Initialize the buffer. */
    listenSock = PR_NewTCPSocket();
    if (NULL == listenSock) {
        fprintf(stderr, "PR_NewTCPSocket failed\n");
        exit(1);
    }
    if (PR_InitializeNetAddr(PR_IpAddrAny, 0, &addr) == PR_FAILURE) {
        fprintf(stderr, "PR_InitializeNetAddr failed\n");
        exit(1);
    }
    if (PR_Bind(listenSock, &addr) == PR_FAILURE) {
        fprintf(stderr, "PR_Bind failed\n");
        exit(1);
    }
    /* Find out what port number we are bound to. */
    if (PR_GetSockName(listenSock, &addr) == PR_FAILURE) {
        fprintf(stderr, "PR_GetSockName failed\n");
        exit(1);
    }
    if (PR_Listen(listenSock, 5) == PR_FAILURE) {
        fprintf(stderr, "PR_Listen failed\n");
        exit(1);
    }

    /*
     * First test PR_Writev.
     */
    clientThread = PR_CreateThread(PR_USER_THREAD,
            ClientThread, (void *) PR_ntohs(PR_NetAddrInetPort(&addr)),
            PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
    if (NULL == clientThread) {
        fprintf(stderr, "PR_CreateThread failed\n");
        exit(1);
    }
    acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
    if (NULL == acceptSock) {
        fprintf(stderr, "PR_Accept failed\n");
        exit(1);
    }
    osfd = PR_FileDesc2NativeHandle(acceptSock);
    while ((nbytes = write(osfd, buf, sizeof(buf))) != -1) {
        /* empty loop body */
#ifdef SYMBIAN
      if (loopcount++>64) break;
#endif
    }
    if ((errno != EAGAIN) && (errno != EWOULDBLOCK)) {
        fprintf(stderr, "write failed\n");
        exit(1);
    }
    iov.iov_base = buf;
    iov.iov_len = 0;
    printf("calling PR_Writev with a zero-length buffer\n");
    fflush(stdout);
    nbytes = PR_Writev(acceptSock, &iov, 1, PR_INTERVAL_NO_TIMEOUT);
    if (nbytes != 0) {
        fprintf(stderr, "PR_Writev should return 0 but returns %d\n", nbytes);
        exit(1);
    }
    if (PR_Close(acceptSock) == PR_FAILURE) {
        fprintf(stderr, "PR_Close failed\n");
        exit(1);
    }
    if (PR_JoinThread(clientThread) == PR_FAILURE) {
        fprintf(stderr, "PR_JoinThread failed\n");
        exit(1);
    }

    /*
     * Then test PR_Write.
     */
    clientThread = PR_CreateThread(PR_USER_THREAD,
            ClientThread, (void *) PR_ntohs(PR_NetAddrInetPort(&addr)),
            PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
    if (NULL == clientThread) {
        fprintf(stderr, "PR_CreateThread failed\n");
        exit(1);
    }
#ifdef SYMBIAN
    loopcount = 0;
#endif
    acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
    if (NULL == acceptSock) {
        fprintf(stderr, "PR_Accept failed\n");
        exit(1);
    }
    osfd = PR_FileDesc2NativeHandle(acceptSock);
    while ((nbytes = write(osfd, buf, sizeof(buf))) != -1) {
        /* empty loop body */
#ifdef SYMBIAN
      if (loopcount++>64) break;
#endif
    }
    if ((errno != EAGAIN) && (errno != EWOULDBLOCK)) {
        fprintf(stderr, "write failed\n");
        exit(1);
    }
    printf("calling PR_Write with a zero-length buffer\n");
    fflush(stdout);
    nbytes = PR_Write(acceptSock, buf, 0);
    if (nbytes != 0) {
        fprintf(stderr, "PR_Write should return 0 but returns %d\n", nbytes);
        exit(1);
    }
    if (PR_Close(acceptSock) == PR_FAILURE) {
        fprintf(stderr, "PR_Close failed\n");
        exit(1);
    }
    if (PR_JoinThread(clientThread) == PR_FAILURE) {
        fprintf(stderr, "PR_JoinThread failed\n");
        exit(1);
    }

    /*
     * Finally test PR_Send.
     */
    clientThread = PR_CreateThread(PR_USER_THREAD,
            ClientThread, (void *) PR_ntohs(PR_NetAddrInetPort(&addr)),
            PR_PRIORITY_NORMAL, PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
    if (NULL == clientThread) {
        fprintf(stderr, "PR_CreateThread failed\n");
        exit(1);
    }
#ifdef SYMBIAN
    loopcount = 0;
#endif
    acceptSock = PR_Accept(listenSock, NULL, PR_INTERVAL_NO_TIMEOUT);
    if (NULL == acceptSock) {
        fprintf(stderr, "PR_Accept failed\n");
        exit(1);
    }
    osfd = PR_FileDesc2NativeHandle(acceptSock);
    while ((nbytes = write(osfd, buf, sizeof(buf))) != -1) {
        /* empty loop body */
#ifdef SYMBIAN
      if (loopcount++>64) break;
#endif
    }
    if ((errno != EAGAIN) && (errno != EWOULDBLOCK)) {
        fprintf(stderr, "write failed\n");
        exit(1);
    }
    printf("calling PR_Send with a zero-length buffer\n");
    fflush(stdout);
    nbytes = PR_Send(acceptSock, buf, 0, 0, PR_INTERVAL_NO_TIMEOUT);
    if (nbytes != 0) {
        fprintf(stderr, "PR_Send should return 0 but returns %d\n", nbytes);
        exit(1);
    }
    if (PR_Close(acceptSock) == PR_FAILURE) {
        fprintf(stderr, "PR_Close failed\n");
        exit(1);
    }
    if (PR_JoinThread(clientThread) == PR_FAILURE) {
        fprintf(stderr, "PR_JoinThread failed\n");
        exit(1);
    }

    if (PR_Close(listenSock) == PR_FAILURE) {
        fprintf(stderr, "PR_Close failed\n");
        exit(1);
    }
    printf("PASS\n");
    return 0;
}

#endif /* XP_UNIX */