The Tor Browser: nsprpub/pr/tests/pipeping.c@7e26c7da4463 (annotated)

nsprpub/pr/tests/pipeping.c@7e26c7da4463 (annotated)

nsprpub/pr/tests/pipeping.c

Wed, 31 Dec 2014 06:55:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:55:50 +0100
changeset 2: 7e26c7da4463
permissions: -rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

 /* -*- 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: pipeping.c
  *
  * Description:
  * This test runs in conjunction with the pipepong test.
  * This test creates two pipes and redirects the stdin and
  * stdout of the pipepong test to the pipes.  Then this
  * test writes "ping" to the pipepong test and the pipepong
  * test writes "pong" back.  To run this pair of tests,
  * just invoke pipeping.
  *
  * Tested areas: process creation, pipes, file descriptor
  * inheritance, standard I/O redirection.
  */
 #include "prerror.h"
 #include "prio.h"
 #include "prproces.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifdef XP_OS2
 static char *child_argv[] = { "pipepong.exe", NULL };
 #else
 static char *child_argv[] = { "pipepong", NULL };
 #endif
 #define NUM_ITERATIONS 10
 int main(int argc, char **argv)
 {
     PRFileDesc *in_pipe[2];
     PRFileDesc *out_pipe[2];
     PRStatus status;
     PRProcess *process;
     PRProcessAttr *attr;
     char buf[1024];
     PRInt32 nBytes;
     PRInt32 exitCode;
     int idx;
     status = PR_CreatePipe(&in_pipe[0], &in_pipe[1]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_CreatePipe failed\n");
         exit(1);
     }
     status = PR_CreatePipe(&out_pipe[0], &out_pipe[1]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_CreatePipe failed\n");
         exit(1);
     }
     status = PR_SetFDInheritable(in_pipe[0], PR_FALSE);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_SetFDInheritable failed\n");
         exit(1);
     }
     status = PR_SetFDInheritable(in_pipe[1], PR_TRUE);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_SetFDInheritable failed\n");
         exit(1);
     }
     status = PR_SetFDInheritable(out_pipe[0], PR_TRUE);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_SetFDInheritable failed\n");
         exit(1);
     }
     status = PR_SetFDInheritable(out_pipe[1], PR_FALSE);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_SetFDInheritable failed\n");
         exit(1);
     }
     attr = PR_NewProcessAttr();
     if (attr == NULL) {
         fprintf(stderr, "PR_NewProcessAttr failed\n");
         exit(1);
     }
     PR_ProcessAttrSetStdioRedirect(attr, PR_StandardInput, out_pipe[0]);
     PR_ProcessAttrSetStdioRedirect(attr, PR_StandardOutput, in_pipe[1]);
     process = PR_CreateProcess(child_argv[0], child_argv, NULL, attr);
     if (process == NULL) {
         fprintf(stderr, "PR_CreateProcess failed\n");
         exit(1);
     }
     PR_DestroyProcessAttr(attr);
     status = PR_Close(out_pipe[0]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     status = PR_Close(in_pipe[1]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     for (idx = 0; idx < NUM_ITERATIONS; idx++) {
         strcpy(buf, "ping");
         printf("ping process: sending \"%s\"\n", buf);
         nBytes = PR_Write(out_pipe[1], buf, 5);
         if (nBytes == -1) {
             fprintf(stderr, "PR_Write failed: (%d, %d)\n", PR_GetError(),
                     PR_GetOSError());
             exit(1);
         }
         memset(buf, 0, sizeof(buf));
         nBytes = PR_Read(in_pipe[0], buf, sizeof(buf));
         if (nBytes == -1) {
             fprintf(stderr, "PR_Read failed: (%d, %d)\n",
                     PR_GetError(), PR_GetOSError());
             exit(1);
         }
         printf("ping process: received \"%s\"\n", buf);
         if (nBytes != 5) {
             fprintf(stderr, "ping process: expected 5 bytes but got %d bytes\n",
                     nBytes);
             exit(1);
         }
         if (strcmp(buf, "pong") != 0) {
             fprintf(stderr, "ping process: expected \"pong\" but got \"%s\"\n",
                     buf);
             exit(1);
         }
     }
     status = PR_Close(in_pipe[0]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     status = PR_Close(out_pipe[1]);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_Close failed\n");
         exit(1);
     }
     status = PR_WaitProcess(process, &exitCode);
     if (status == PR_FAILURE) {
         fprintf(stderr, "PR_WaitProcess failed\n");
         exit(1);
     }
     if (exitCode == 0) {
         printf("PASS\n");
         return 0;
     } else {
         printf("FAIL\n");
         return 1;
     }
 }

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nsprpub/pr/tests/pipeping.c@7e26c7da4463 (annotated)

nsprpub/pr/tests/pipeping.c