michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  * File: pipepong2.c
michael@0:  *
michael@0:  * Description:
michael@0:  * This test runs in conjunction with the pipeping2 test.
michael@0:  * The pipeping2 test creates two pipes and passes two
michael@0:  * pipe fd's to this test.  Then the pipeping2 test writes
michael@0:  * "ping" to this test and this test writes "pong" back.
michael@0:  * To run this pair of tests, just invoke pipeping2.
michael@0:  *
michael@0:  * Tested areas: process creation, pipes, file descriptor
michael@0:  * inheritance.
michael@0:  */
michael@0: 
michael@0: #include "prerror.h"
michael@0: #include "prio.h"
michael@0: 
michael@0: #include <stdio.h>
michael@0: #include <string.h>
michael@0: #include <stdlib.h>
michael@0: 
michael@0: #define NUM_ITERATIONS 10
michael@0: 
michael@0: int main(int argc, char **argv)
michael@0: {
michael@0:     PRFileDesc *pipe_read, *pipe_write;
michael@0:     PRStatus status;
michael@0:     char buf[1024];
michael@0:     PRInt32 nBytes;
michael@0:     int idx;
michael@0: 
michael@0:     pipe_read = PR_GetInheritedFD("PIPE_READ");
michael@0:     if (pipe_read == NULL) {
michael@0:         fprintf(stderr, "PR_GetInheritedFD failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0:     status = PR_SetFDInheritable(pipe_read, PR_FALSE);
michael@0:     if (status == PR_FAILURE) {
michael@0:         fprintf(stderr, "PR_SetFDInheritable failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0:     pipe_write = PR_GetInheritedFD("PIPE_WRITE");
michael@0:     if (pipe_write == NULL) {
michael@0:         fprintf(stderr, "PR_GetInheritedFD failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0:     status = PR_SetFDInheritable(pipe_write, PR_FALSE);
michael@0:     if (status == PR_FAILURE) {
michael@0:         fprintf(stderr, "PR_SetFDInheritable failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0: 
michael@0:     for (idx = 0; idx < NUM_ITERATIONS; idx++) {
michael@0:         memset(buf, 0, sizeof(buf));
michael@0:         nBytes = PR_Read(pipe_read, buf, sizeof(buf));
michael@0:         if (nBytes == -1) {
michael@0:             fprintf(stderr, "PR_Read failed: (%d, %d)\n",
michael@0:                     PR_GetError(), PR_GetOSError());
michael@0:             exit(1);
michael@0:         }
michael@0:         printf("pong process: received \"%s\"\n", buf);
michael@0:         if (nBytes != 5) {
michael@0:             fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",
michael@0:                     nBytes);
michael@0:             exit(1);
michael@0:         }
michael@0:         if (strcmp(buf, "ping") != 0) {
michael@0:             fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",
michael@0:                     buf);
michael@0:             exit(1);
michael@0:         }
michael@0: 
michael@0:         strcpy(buf, "pong");
michael@0:         printf("pong process: sending \"%s\"\n", buf);
michael@0:         nBytes = PR_Write(pipe_write, buf, 5);
michael@0:         if (nBytes == -1) {
michael@0:             fprintf(stderr, "PR_Write failed\n");
michael@0:             exit(1);
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     status = PR_Close(pipe_read);
michael@0:     if (status == PR_FAILURE) {
michael@0:         fprintf(stderr, "PR_Close failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0:     status = PR_Close(pipe_write);
michael@0:     if (status == PR_FAILURE) {
michael@0:         fprintf(stderr, "PR_Close failed\n");
michael@0:         exit(1);
michael@0:     }
michael@0:     return 0;
michael@0: }