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-rw-r--r--nsprpub/pr/tests/zerolen.c250
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diff --git a/nsprpub/pr/tests/zerolen.c b/nsprpub/pr/tests/zerolen.c
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+++ b/nsprpub/pr/tests/zerolen.c
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+/* -*- 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;
+
+ 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 (write(osfd, buf, sizeof(buf)) != -1) {
+ /* empty loop body */
+ }
+ 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);
+ }
+ 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 (write(osfd, buf, sizeof(buf)) != -1) {
+ /* empty loop body */
+ }
+ 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);
+ }
+ 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 (write(osfd, buf, sizeof(buf)) != -1) {
+ /* empty loop body */
+ }
+ 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 */
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