The Tor Browser: nsprpub/pr/tests/prselect.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/prselect.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/prselect.c

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- 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/. */
 /***********************************************************************
 **  1997 - Netscape Communications Corporation
 **
 ** Name: prselect_err.c
 **
 ** Description: tests PR_Select with sockets Error condition functions.
 **
 ** Modification History:
 ** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
 **	         The debug mode will print all of the printfs associated with this test.
 **			 The regress mode will be the default mode. Since the regress tool limits
 **           the output to a one line status:PASS or FAIL,all of the printf statements
 **			 have been handled with an if (debug_mode) statement.
 ***********************************************************************/
 /***********************************************************************
 ** Includes
 ***********************************************************************/
 /* Used to get the command line option */
 #include "plgetopt.h"
 #include "prttools.h"
 #include "prinit.h"
 #include "prio.h"
 #include "prlog.h"
 #include "prprf.h"
 #include "prerror.h"
 #include "prnetdb.h"
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 /***********************************************************************
 ** PRIVATE FUNCTION:    Test_Result
 ** DESCRIPTION: Used in conjunction with the regress tool, prints out the
 **				status of the test case.
 ** INPUTS:      PASS/FAIL
 ** OUTPUTS:     None
 ** RETURN:      None
 ** SIDE EFFECTS:
 **
 ** RESTRICTIONS:
 **      None
 ** MEMORY:      NA
 ** ALGORITHM:   Determine what the status is and print accordingly.
 **
 ***********************************************************************/
 static Test_Result (int result)
 {
 	if (result == PASS)
 		printf ("PASS\n");
 	else
 		printf ("FAIL\n");
 }
 static void
 clientThreadFunc(void *arg)
 {
     PRUint16 port = (PRUint16) arg;
     PRFileDesc *sock;
     PRNetAddr addr;
     char buf[128];
     int i;
     addr.inet.family = AF_INET;
     addr.inet.port = PR_htons(port);
     addr.inet.ip = PR_htonl(INADDR_LOOPBACK);
     PR_snprintf(buf, sizeof(buf), "%hu", port);
     for (i = 0; i < 5; i++) {
 	sock = PR_NewTCPSocket();
         PR_Connect(sock, &addr, PR_INTERVAL_NO_TIMEOUT);
 	PR_Write(sock, buf, sizeof(buf));
 	PR_Close(sock);
     }
 }
 int main(int argc, char **argv)
 {
     PRFileDesc *listenSock1, *listenSock2;
     PRFileDesc *badFD;
     PRFileDesc *fds0[10], *fds1[10], **fds, **other_fds;
     PRIntn nfds;
     PRUint16 listenPort1, listenPort2;
     PRNetAddr addr;
     PR_fd_set readFdSet;
     char buf[128];
     PRThread *clientThread;
     PRInt32 retVal;
     PRIntn i, j;
 	/* The command line argument: -d is used to determine if the test is being run
 	in debug mode. The regress tool requires only one line output:PASS or FAIL.
 	All of the printfs associated with this test has been handled with a if (debug_mode)
 	test.
 	Usage: test_name -d
 	*/
 	PLOptStatus os;
 	PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
 	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
     {
 		if (PL_OPT_BAD == os) continue;
         switch (opt->option)
         {
         case 'd':  /* debug mode */
 			debug_mode = 1;
             break;
          default:
             break;
         }
     }
 	PL_DestroyOptState(opt);
  /* main test */
     PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
     PR_STDIO_INIT();
     if (debug_mode) {
 		printf("This program tests PR_Select with sockets.  Timeout, error\n");
 		printf("reporting, and normal operation are tested.\n\n");
 	}
     /* Create two listening sockets */
     if ((listenSock1 = PR_NewTCPSocket()) == NULL) {
 	fprintf(stderr, "Can't create a new TCP socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     addr.inet.family = AF_INET;
     addr.inet.ip = PR_htonl(INADDR_ANY);
     addr.inet.port = PR_htons(0);
     if (PR_Bind(listenSock1, &addr) == PR_FAILURE) {
 	fprintf(stderr, "Can't bind socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     if (PR_GetSockName(listenSock1, &addr) == PR_FAILURE) {
 	fprintf(stderr, "PR_GetSockName failed\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     listenPort1 = PR_ntohs(addr.inet.port);
     if (PR_Listen(listenSock1, 5) == PR_FAILURE) {
 	fprintf(stderr, "Can't listen on a socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     if ((listenSock2  = PR_NewTCPSocket()) == NULL) {
 	fprintf(stderr, "Can't create a new TCP socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     addr.inet.family = AF_INET;
     addr.inet.ip = PR_htonl(INADDR_ANY);
     addr.inet.port = PR_htons(0);
     if (PR_Bind(listenSock2, &addr) == PR_FAILURE) {
 	fprintf(stderr, "Can't bind socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     if (PR_GetSockName(listenSock2, &addr) == PR_FAILURE) {
 	fprintf(stderr, "PR_GetSockName failed\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     listenPort2 = PR_ntohs(addr.inet.port);
     if (PR_Listen(listenSock2, 5) == PR_FAILURE) {
 	fprintf(stderr, "Can't listen on a socket\n");
 	if (!debug_mode) Test_Result(FAIL);
 	exit(1);
     }
     PR_snprintf(buf, sizeof(buf),
 	    "The server thread is listening on ports %hu and %hu\n\n",
 	    listenPort1, listenPort2);
     printf("%s", buf);
     /* Set up the fd set */
     PR_FD_ZERO(&readFdSet);
     PR_FD_SET(listenSock1, &readFdSet);
     PR_FD_SET(listenSock2, &readFdSet);
     /* Testing timeout */
     if (debug_mode) printf("PR_Select should time out in 5 seconds\n");
     retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 	    PR_SecondsToInterval(5));
     if (retVal != 0) {
 	PR_snprintf(buf, sizeof(buf),
 		"PR_Select should time out and return 0, but it returns %ld\n",
 		retVal);
 	fprintf(stderr, "%s", buf);
 	if (retVal == -1) {
 	    fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(),
 		    PR_GetOSError());
 			if (!debug_mode) Test_Result(FAIL);
 	}
 	exit(1);
     }
     if (debug_mode) printf("PR_Select timed out.  Test passed.\n\n");
 	else Test_Result(PASS);
     /* Testing bad fd */
     printf("PR_Select should detect a bad file descriptor\n");
     if ((badFD = PR_NewTCPSocket()) == NULL) {
 	fprintf(stderr, "Can't create a TCP socket\n");
 	exit(1);
     }
     PR_FD_SET(listenSock1, &readFdSet);
     PR_FD_SET(listenSock2, &readFdSet);
     PR_FD_SET(badFD, &readFdSet);
     PR_Close(badFD);  /* make the fd bad */
     retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 	    PR_INTERVAL_NO_TIMEOUT);
     if (retVal != -1 || PR_GetError() != PR_BAD_DESCRIPTOR_ERROR) {
 	fprintf(stderr, "Failed to detect the bad fd: "
 		"PR_Select returns %d\n", retVal);
 	if (retVal == -1) {
 	    fprintf(stderr, "Error %d, oserror %d\n", PR_GetError(),
 		    PR_GetOSError());
 	}
 	exit(1);
     }
     printf("PR_Select detected a bad fd.  Test passed.\n\n");
     PR_FD_CLR(badFD, &readFdSet);
     clientThread = PR_CreateThread(PR_USER_THREAD,
 	    clientThreadFunc, (void *) listenPort1,
 	    PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
 	    PR_UNJOINABLE_THREAD, 0);
     if (clientThread == NULL) {
 	fprintf(stderr, "can't create thread\n");
 	exit(1);
     }
     clientThread = PR_CreateThread(PR_USER_THREAD,
 	    clientThreadFunc, (void *) listenPort2,
 	    PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
 	    PR_UNJOINABLE_THREAD, 0);
     if (clientThread == NULL) {
 	fprintf(stderr, "can't create thread\n");
 	exit(1);
     }
     printf("Two client threads are created.  Each of them will\n");
     printf("send data to one of the two ports the server is listening on.\n");
     printf("The data they send is the port number.  Each of them send\n");
     printf("the data five times, so you should see ten lines below,\n");
     printf("interleaved in an arbitrary order.\n");
     /* set up the fd array */
     fds = fds0;
     other_fds = fds1;
     fds[0] = listenSock1;
     fds[1] = listenSock2;
     nfds = 2;
     PR_FD_SET(listenSock1, &readFdSet);
     PR_FD_SET(listenSock2, &readFdSet);
     /* 20 events total */
     i = 0;
     while (i < 20) {
 	PRFileDesc **tmp;
 	int nextIndex;
 	int nEvents = 0;
 	retVal = PR_Select(0 /* unused */, &readFdSet, NULL, NULL,
 		PR_INTERVAL_NO_TIMEOUT);
 	PR_ASSERT(retVal != 0);  /* no timeout */
 	if (retVal == -1) {
 	    fprintf(stderr, "PR_Select failed (%d, %d)\n", PR_GetError(),
 		    PR_GetOSError());
 	    exit(1);
 	}
 	nextIndex = 2;
 	/* the two listening sockets */
 	for (j = 0; j < 2; j++) {
 	    other_fds[j] = fds[j];
 	    if (PR_FD_ISSET(fds[j], &readFdSet)) {
 		PRFileDesc *sock;
 		nEvents++;
 		sock = PR_Accept(fds[j], NULL, PR_INTERVAL_NO_TIMEOUT);
 		if (sock == NULL) {
 		    fprintf(stderr, "PR_Accept() failed\n");
 		    exit(1);
 		}
 		other_fds[nextIndex] = sock;
 		PR_FD_SET(sock, &readFdSet);
 		nextIndex++;
 	    }
 	    PR_FD_SET(fds[j], &readFdSet);
 	}
 	for (j = 2; j < nfds; j++) {
 	    if (PR_FD_ISSET(fds[j], &readFdSet)) {
 		PRInt32 nBytes;
 		PR_FD_CLR(fds[j], &readFdSet);
 		nEvents++;
 		nBytes = PR_Read(fds[j], buf, sizeof(buf));
 		if (nBytes == -1) {
 		    fprintf(stderr, "PR_Read() failed\n");
 		    exit(1);
 		}
 		/* Just to be safe */
 		buf[127] = '\0';
 		PR_Close(fds[j]);
 		printf("The server received \"%s\" from a client\n", buf);
 	    } else {
 		PR_FD_SET(fds[j], &readFdSet);
 		other_fds[nextIndex] = fds[j];
 		nextIndex++;
 	    }
 	}
 	PR_ASSERT(retVal == nEvents);
 	/* swap */
 	tmp = fds;
 	fds = other_fds;
 	other_fds = tmp;
 	nfds = nextIndex;
 	i += nEvents;
     }
     printf("All tests finished\n");
     PR_Cleanup();
     return 0;
 }

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nsprpub/pr/tests/prselect.c@b8a032363ba2 (annotated)

nsprpub/pr/tests/prselect.c