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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/telnet/network.c	Lines:	0	36	0.0 %
Date:	2017-11-13	Branches:	0	26	0.0 %


/*	$OpenBSD: network.c,v 1.17 2014/07/22 07:30:24 jsg Exp $	*/
/*	$NetBSD: network.c,v 1.5 1996/02/28 21:04:06 thorpej Exp $	*/

/*
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "telnet_locl.h"

#include <sys/socket.h>
#include <errno.h>
#include <poll.h>
#include <unistd.h>

Ring		netoring, netiring;
unsigned char	netobuf[2*BUFSIZ], netibuf[BUFSIZ];

/*
 * Initialize internal network data structures.
 */

void
init_network(void)
{
	ring_init(&netoring, netobuf, sizeof netobuf);
	ring_init(&netiring, netibuf, sizeof netibuf);
	SetNetTrace(NULL);
}


/*
 * Check to see if any out-of-band data exists on a socket (for
 * Telnet "synch" processing).
 */

int
stilloob(void)
{
    struct pollfd pfd[1];
    int value;

    do {
	pfd[0].fd = net;
	pfd[0].events = POLLRDBAND;
	value = poll(pfd, 1, 0);
    } while ((value == -1) && (errno == EINTR));

    if (value < 0) {
	perror("poll");
	quit();
    }
    if (pfd[0].revents & POLLRDBAND)
	return 1;
    else
	return 0;
}

/*
 *  setneturg()
 *
 *	Sets "neturg" to the current location.
 */

void
setneturg(void)
{
    ring_mark(&netoring);
}

/*
 *  netflush
 *		Send as much data as possible to the network,
 *	handling requests for urgent data.
 *
 *		The return value indicates whether we did any
 *	useful work.
 */

int
netflush(void)
{
    int n, n1;

    if ((n1 = n = ring_full_consecutive(&netoring)) > 0) {
	if (!ring_at_mark(&netoring)) {
	    n = send(net, (char *)netoring.consume, n, 0); /* normal write */
	} else {
	    /*
	     * In 4.2 (and 4.3) systems, there is some question about
	     * what byte in a sendOOB operation is the "OOB" data.
	     * To make ourselves compatible, we only send ONE byte
	     * out of band, the one WE THINK should be OOB (though
	     * we really have more the TCP philosophy of urgent data
	     * rather than the Unix philosophy of OOB data).
	     */
	    n = send(net, (char *)netoring.consume, 1, MSG_OOB);/* URGENT data */
	}
    }
    if (n < 0) {
	if (errno != ENOBUFS && errno != EWOULDBLOCK) {
	    setcommandmode();
	    perror(hostname);
	    (void)close(net);
	    ring_clear_mark(&netoring);
	    longjmp(peerdied, -1);
	}
	n = 0;
    }
    if (netdata && n) {
	Dump('>', netoring.consume, n);
    }
    if (n) {
	ring_consumed(&netoring, n);
	/*
	 * If we sent all, and more to send, then recurse to pick
	 * up the other half.
	 */
	if ((n1 == n) && ring_full_consecutive(&netoring)) {
	    (void) netflush();
	}
	return 1;
    } else {
	return 0;
    }
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: network.c,v 1.17 2014/07/22 07:30:24 jsg Exp $ */
2			/* $NetBSD: network.c,v 1.5 1996/02/28 21:04:06 thorpej Exp $ */
3
4			/*
5			* Copyright (c) 1988, 1993
6			* The Regents of the University of California. All rights reserved.
7			*
8			* Redistribution and use in source and binary forms, with or without
9			* modification, are permitted provided that the following conditions
10			* are met:
11			* 1. Redistributions of source code must retain the above copyright
12			* notice, this list of conditions and the following disclaimer.
13			* 2. Redistributions in binary form must reproduce the above copyright
14			* notice, this list of conditions and the following disclaimer in the
15			* documentation and/or other materials provided with the distribution.
16			* 3. Neither the name of the University nor the names of its contributors
17			* may be used to endorse or promote products derived from this software
18			* without specific prior written permission.
19			*
20			* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23			* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30			* SUCH DAMAGE.
31			*/
32
33			#include "telnet_locl.h"
34
35			#include <sys/socket.h>
36			#include <errno.h>
37			#include <poll.h>
38			#include <unistd.h>
39
40			Ring netoring, netiring;
41			unsigned char netobuf[2*BUFSIZ], netibuf[BUFSIZ];
42
43			/*
44			* Initialize internal network data structures.
45			*/
46
47			void
48			init_network(void)
49			{
50			ring_init(&netoring, netobuf, sizeof netobuf);
51			ring_init(&netiring, netibuf, sizeof netibuf);
52			SetNetTrace(NULL);
53			}
54
55
56			/*
57			* Check to see if any out-of-band data exists on a socket (for
58			* Telnet "synch" processing).
59			*/
60
61			int
62			stilloob(void)
63			{
64			struct pollfd pfd[1];
65			int value;
66
67			do {
68			pfd[0].fd = net;
69			pfd[0].events = POLLRDBAND;
70			value = poll(pfd, 1, 0);
71			} while ((value == -1) && (errno == EINTR));
72
73			if (value < 0) {
74			perror("poll");
75			quit();
76			}
77			if (pfd[0].revents & POLLRDBAND)
78			return 1;
79			else
80			return 0;
81			}
82
83			/*
84			* setneturg()
85			*
86			* Sets "neturg" to the current location.
87			*/
88
89			void
90			setneturg(void)
91			{
92			ring_mark(&netoring);
93			}
94
95			/*
96			* netflush
97			* Send as much data as possible to the network,
98			* handling requests for urgent data.
99			*
100			* The return value indicates whether we did any
101			* useful work.
102			*/
103
104			int
105			netflush(void)
106			{
107			int n, n1;
108
109			if ((n1 = n = ring_full_consecutive(&netoring)) > 0) {
110			if (!ring_at_mark(&netoring)) {
111			n = send(net, (char )netoring.consume, n, 0); / normal write */
112			} else {
113			/*
114			* In 4.2 (and 4.3) systems, there is some question about
115			* what byte in a sendOOB operation is the "OOB" data.
116			* To make ourselves compatible, we only send ONE byte
117			* out of band, the one WE THINK should be OOB (though
118			* we really have more the TCP philosophy of urgent data
119			* rather than the Unix philosophy of OOB data).
120			*/
121			n = send(net, (char )netoring.consume, 1, MSG_OOB);/ URGENT data */
122			}
123			}
124			if (n < 0) {
125			if (errno != ENOBUFS && errno != EWOULDBLOCK) {
126			setcommandmode();
127			perror(hostname);
128			(void)close(net);
129			ring_clear_mark(&netoring);
130			longjmp(peerdied, -1);
131			}
132			n = 0;
133			}
134			if (netdata && n) {
135			Dump('>', netoring.consume, n);
136			}
137			if (n) {
138			ring_consumed(&netoring, n);
139			/*
140			* If we sent all, and more to send, then recurse to pick
141			* up the other half.
142			*/
143			if ((n1 == n) && ring_full_consecutive(&netoring)) {
144			(void) netflush();
145			}
146			return 1;
147			} else {
148			return 0;
149			}
150			}