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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	bin/mt/mtrmt.c	Lines:	0	95	0.0 %
Date:	2017-11-13	Branches:	0	54	0.0 %


/*	$OpenBSD: mtrmt.c,v 1.21 2013/11/21 15:54:45 deraadt Exp $	*/
/*	$NetBSD: mtrmt.c,v 1.2 1996/03/06 06:22:07 scottr Exp $	*/

/*-
 * Copyright (c) 1980, 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 <sys/types.h>
#include <sys/mtio.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <ufs/ufs/dinode.h>

#include <netinet/in.h>
#include <netinet/tcp.h>

#include <protocols/dumprestore.h>

#include <ctype.h>
#include <err.h>
#include <netdb.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "pathnames.h"
#include "mt.h"

#define	TS_CLOSED	0
#define	TS_OPEN		1

static	int rmtstate = TS_CLOSED;
static	int rmtape;
static	char *rmtpeer;

static	int okname(char *);
static	int rmtcall(char *, char *);
static	void rmtconnaborted(void);
static	void sigrmtconnaborted(int);
static	int rmtgetb(void);
static	void rmtgetconn(void);
static	void rmtgets(char *, int);
static	int rmtreply(char *);

int
rmthost(char *host)
{
	if ((rmtpeer = strdup(host)) == NULL)
		err(1, "strdup");
	signal(SIGPIPE, sigrmtconnaborted);
	rmtgetconn();
	if (rmtape < 0)
		return (0);
	return (1);
}

/* ARGSUSED */
static void
sigrmtconnaborted(int signo)
{

	warnx("Lost connection to remote host.");
	_exit(1);
}

static void
rmtconnaborted(void)
{

	errx(1, "Lost connection to remote host.");
}

void
rmtgetconn(void)
{
	char *cp;
	static struct servent *sp = NULL;
	static struct passwd *pwd = NULL;
#ifdef notdef
	static int on = 1;
#endif
	char *tuser;
	int size;
	int maxseg;

	if (sp == NULL) {
		sp = getservbyname("shell", "tcp");
		if (sp == NULL)
			errx(1, "shell/tcp: unknown service");
		pwd = getpwuid(getuid());
		if (pwd == NULL)
			errx(1, "who are you?");
	}
	if ((cp = strchr(rmtpeer, '@')) != NULL) {
		tuser = rmtpeer;
		*cp = '\0';
		if (!okname(tuser))
			exit(1);
		rmtpeer = ++cp;
	} else
		tuser = pwd->pw_name;

	rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name, tuser,
	    _PATH_RMT, NULL);
	if (rmtape == -1)
		exit(1);		/* rcmd already printed error message */

	size = TP_BSIZE;
	if (size > 60 * 1024)		/* XXX */
		size = 60 * 1024;
	/* Leave some space for rmt request/response protocol */
	size += 2 * 1024;

	while (size > TP_BSIZE &&
	    setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
		    size -= TP_BSIZE;
	(void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));

	maxseg = 1024;
	(void)setsockopt(rmtape, IPPROTO_TCP, TCP_MAXSEG, &maxseg,
		sizeof (maxseg));

#ifdef notdef
	if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
		perror("TCP_NODELAY setsockopt");
#endif
}

static int
okname(char *cp0)
{
	unsigned char *cp;
	int c;

	for (cp = cp0; *cp; cp++) {
		c = (unsigned char)*cp;
		if (!isascii(c) || !(isalnum(c) || c == '_' || c == '-')) {
			warnx("invalid user name: %s", cp0);
			return (0);
		}
	}
	return (1);
}

int
rmtopen(char *tape, int mode)
{
	char buf[256];

	(void)snprintf(buf, sizeof (buf), "O%s\n%d\n", tape, mode);
	rmtstate = TS_OPEN;
	return (rmtcall(tape, buf));
}

void
rmtclose(void)
{

	if (rmtstate != TS_OPEN)
		return;
	rmtcall("close", "C\n");
	rmtstate = TS_CLOSED;
}

struct	mtget mts;

struct mtget *
rmtstatus(void)
{
	int i;
	char *cp;

	if (rmtstate != TS_OPEN)
		return (NULL);
	rmtcall("status", "S\n");
	for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
		*cp++ = rmtgetb();
	return (&mts);
}

int
rmtioctl(int cmd, int count)
{
	char buf[256];

	if (count < 0)
		return (-1);
	(void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
	return (rmtcall("ioctl", buf));
}

static int
rmtcall(char *cmd, char *buf)
{

	if (write(rmtape, buf, strlen(buf)) != strlen(buf))
		rmtconnaborted();
	return (rmtreply(cmd));
}

static int
rmtreply(char *cmd)
{
	char *cp;
	char code[30], emsg[BUFSIZ];

	rmtgets(code, sizeof (code));
	if (*code == 'E' || *code == 'F') {
		rmtgets(emsg, sizeof (emsg));
		warnx("%s: %s", cmd, emsg);
		if (*code == 'F') {
			rmtstate = TS_CLOSED;
			return (-1);
		}
		return (-1);
	}
	if (*code != 'A') {
		/* Kill trailing newline */
		cp = code + strlen(code);
		if (cp > code && *--cp == '\n')
			*cp = '\0';

		warnx("Protocol to remote tape server botched (code \"%s\").",
		    code);
		rmtconnaborted();
	}
	return (atoi(code + 1));
}

int
rmtgetb(void)
{
	char c;

	if (read(rmtape, &c, 1) != 1)
		rmtconnaborted();
	return (c);
}

/* Get a line (guaranteed to have a trailing newline). */
void
rmtgets(char *line, int len)
{
	char *cp = line;

	while (len > 1) {
		*cp = rmtgetb();
		if (*cp == '\n') {
			cp[1] = '\0';
			return;
		}
		cp++;
		len--;
	}
	*cp = '\0';
	warnx("Protocol to remote tape server botched.");
	warnx("(rmtgets got \"%s\").", line);
	rmtconnaborted();
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: mtrmt.c,v 1.21 2013/11/21 15:54:45 deraadt Exp $ */
2			/* $NetBSD: mtrmt.c,v 1.2 1996/03/06 06:22:07 scottr Exp $ */
3
4			/*-
5			* Copyright (c) 1980, 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 <sys/types.h>
34			#include <sys/mtio.h>
35			#include <sys/ioctl.h>
36			#include <sys/socket.h>
37			#include <sys/time.h>
38			#include <ufs/ufs/dinode.h>
39
40			#include <netinet/in.h>
41			#include <netinet/tcp.h>
42
43			#include <protocols/dumprestore.h>
44
45			#include <ctype.h>
46			#include <err.h>
47			#include <netdb.h>
48			#include <pwd.h>
49			#include <signal.h>
50			#include <stdio.h>
51			#include <stdlib.h>
52			#include <string.h>
53			#include <unistd.h>
54
55			#include "pathnames.h"
56			#include "mt.h"
57
58			#define TS_CLOSED 0
59			#define TS_OPEN 1
60
61			static int rmtstate = TS_CLOSED;
62			static int rmtape;
63			static char *rmtpeer;
64
65			static int okname(char *);
66			static int rmtcall(char , char );
67			static void rmtconnaborted(void);
68			static void sigrmtconnaborted(int);
69			static int rmtgetb(void);
70			static void rmtgetconn(void);
71			static void rmtgets(char *, int);
72			static int rmtreply(char *);
73
74			int
75			rmthost(char *host)
76			{
77			if ((rmtpeer = strdup(host)) == NULL)
78			err(1, "strdup");
79			signal(SIGPIPE, sigrmtconnaborted);
80			rmtgetconn();
81			if (rmtape < 0)
82			return (0);
83			return (1);
84			}
85
86			/* ARGSUSED */
87			static void
88			sigrmtconnaborted(int signo)
89			{
90
91			warnx("Lost connection to remote host.");
92			_exit(1);
93			}
94
95			static void
96			rmtconnaborted(void)
97			{
98
99			errx(1, "Lost connection to remote host.");
100			}
101
102			void
103			rmtgetconn(void)
104			{
105			char *cp;
106			static struct servent *sp = NULL;
107			static struct passwd *pwd = NULL;
108			#ifdef notdef
109			static int on = 1;
110			#endif
111			char *tuser;
112			int size;
113			int maxseg;
114
115			if (sp == NULL) {
116			sp = getservbyname("shell", "tcp");
117			if (sp == NULL)
118			errx(1, "shell/tcp: unknown service");
119			pwd = getpwuid(getuid());
120			if (pwd == NULL)
121			errx(1, "who are you?");
122			}
123			if ((cp = strchr(rmtpeer, '@')) != NULL) {
124			tuser = rmtpeer;
125			*cp = '\0';
126			if (!okname(tuser))
127			exit(1);
128			rmtpeer = ++cp;
129			} else
130			tuser = pwd->pw_name;
131
132			rmtape = rcmd(&rmtpeer, (u_short)sp->s_port, pwd->pw_name, tuser,
133			_PATH_RMT, NULL);
134			if (rmtape == -1)
135			exit(1); /* rcmd already printed error message */
136
137			size = TP_BSIZE;
138			if (size > 60 * 1024) /* XXX */
139			size = 60 * 1024;
140			/* Leave some space for rmt request/response protocol */
141			size += 2 * 1024;
142
143			while (size > TP_BSIZE &&
144			setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof (size)) < 0)
145			size -= TP_BSIZE;
146			(void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof (size));
147
148			maxseg = 1024;
149			(void)setsockopt(rmtape, IPPROTO_TCP, TCP_MAXSEG, &maxseg,
150			sizeof (maxseg));
151
152			#ifdef notdef
153			if (setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)) < 0)
154			perror("TCP_NODELAY setsockopt");
155			#endif
156			}
157
158			static int
159			okname(char *cp0)
160			{
161			unsigned char *cp;
162			int c;
163
164			for (cp = cp0; *cp; cp++) {
165			c = (unsigned char)*cp;
166			if (!isascii(c) \|\| !(isalnum(c) \|\| c == '_' \|\| c == '-')) {
167			warnx("invalid user name: %s", cp0);
168			return (0);
169			}
170			}
171			return (1);
172			}
173
174			int
175			rmtopen(char *tape, int mode)
176			{
177			char buf[256];
178
179			(void)snprintf(buf, sizeof (buf), "O%s\n%d\n", tape, mode);
180			rmtstate = TS_OPEN;
181			return (rmtcall(tape, buf));
182			}
183
184			void
185			rmtclose(void)
186			{
187
188			if (rmtstate != TS_OPEN)
189			return;
190			rmtcall("close", "C\n");
191			rmtstate = TS_CLOSED;
192			}
193
194			struct mtget mts;
195
196			struct mtget *
197			rmtstatus(void)
198			{
199			int i;
200			char *cp;
201
202			if (rmtstate != TS_OPEN)
203			return (NULL);
204			rmtcall("status", "S\n");
205			for (i = 0, cp = (char *)&mts; i < sizeof(mts); i++)
206			*cp++ = rmtgetb();
207			return (&mts);
208			}
209
210			int
211			rmtioctl(int cmd, int count)
212			{
213			char buf[256];
214
215			if (count < 0)
216			return (-1);
217			(void)snprintf(buf, sizeof (buf), "I%d\n%d\n", cmd, count);
218			return (rmtcall("ioctl", buf));
219			}
220
221			static int
222			rmtcall(char cmd, char buf)
223			{
224
225			if (write(rmtape, buf, strlen(buf)) != strlen(buf))
226			rmtconnaborted();
227			return (rmtreply(cmd));
228			}
229
230			static int
231			rmtreply(char *cmd)
232			{
233			char *cp;
234			char code[30], emsg[BUFSIZ];
235
236			rmtgets(code, sizeof (code));
237			if (code == 'E' \|\| code == 'F') {
238			rmtgets(emsg, sizeof (emsg));
239			warnx("%s: %s", cmd, emsg);
240			if (*code == 'F') {
241			rmtstate = TS_CLOSED;
242			return (-1);
243			}
244			return (-1);
245			}
246			if (*code != 'A') {
247			/* Kill trailing newline */
248			cp = code + strlen(code);
249			if (cp > code && *--cp == '\n')
250			*cp = '\0';
251
252			warnx("Protocol to remote tape server botched (code \"%s\").",
253			code);
254			rmtconnaborted();
255			}
256			return (atoi(code + 1));
257			}
258
259			int
260			rmtgetb(void)
261			{
262			char c;
263
264			if (read(rmtape, &c, 1) != 1)
265			rmtconnaborted();
266			return (c);
267			}
268
269			/* Get a line (guaranteed to have a trailing newline). */
270			void
271			rmtgets(char *line, int len)
272			{
273			char *cp = line;
274
275			while (len > 1) {
276			*cp = rmtgetb();
277			if (*cp == '\n') {
278			cp[1] = '\0';
279			return;
280			}
281			cp++;
282			len--;
283			}
284			*cp = '\0';
285			warnx("Protocol to remote tape server botched.");
286			warnx("(rmtgets got \"%s\").", line);
287			rmtconnaborted();
288			}