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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/dump/dumprmt.c	Lines:	0	113	0.0 %
Date:	2017-11-07	Branches:	0	62	0.0 %


/*	$OpenBSD: dumprmt.c,v 1.29 2015/01/16 06:39:57 deraadt Exp $	*/
/*	$NetBSD: dumprmt.c,v 1.17 1997/06/05 16:10:47 mrg 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/param.h>	/* MAXBSIZE */
#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 <errno.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <limits.h>

#include "pathnames.h"
#include "dump.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(int);
static	int rmtgetb(void);
static	void rmtgetconn(void);
static	void rmtgets(char *, int);
static	int rmtreply(char *);

int	rmthost(char *host);
int	rmtopen(char *tape, int mode);
int	rmtread(char *buf, int count);
int	rmtwrite(char *buf, int count);
int	rmtseek(int offset, int pos);
int	rmtioctl(int cmd, int count);
void	rmtclose(void);

extern	int ntrec;		/* blocking factor on tape */

int
rmthost(char *host)
{
	int len = strlen(host) + 1;

	rmtpeer = malloc(len);
	if (rmtpeer)
		strlcpy(rmtpeer, host, len);
	else
		rmtpeer = host;
	signal(SIGPIPE, rmtconnaborted);
	rmtgetconn();
	if (rmtape < 0)
		return (0);
	return (1);
}

/* ARGSUSED */
static void
rmtconnaborted(int signo)
{
	/* XXX signal race */
	errx(X_ABORT, "Lost connection to remote host.");
}

void
rmtgetconn(void)
{
	char *cp;
	static struct servent *sp = NULL;
	static struct passwd *pwd = NULL;
	static int on = 1;
	char *tuser, *name;
	int size;
	int maxseg;

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

	rmtape = rcmd(&rmtpeer, sp->s_port, name, tuser, _PATH_RMT, NULL);
	(void)free(name);
	if (rmtape < 0)
		return;

	size = ntrec * 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));

	(void) setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
}

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

	for (cp = cp0; *cp; cp++) {
		c = *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;
}

int
rmtread(char *buf, int count)
{
	char line[30];
	int n, i, cc;

	(void)snprintf(line, sizeof(line), "R%d\n", count);
	n = rmtcall("read", line);
	if (n < 0) {
		errno = n;
		return (-1);
	}
	for (i = 0; i < n; i += cc) {
		cc = read(rmtape, buf+i, n - i);
		if (cc <= 0) {
			rmtconnaborted(0);
		}
	}
	return (n);
}

int
rmtwrite(char *buf, int count)
{
	char line[30];

	(void)snprintf(line, sizeof(line), "W%d\n", count);
	write(rmtape, line, strlen(line));
	write(rmtape, buf, count);
	return (rmtreply("write"));
}

int
rmtseek(int offset, int pos)
{
	char line[80];

	(void)snprintf(line, sizeof(line), "L%d\n%d\n", offset, pos);
	return (rmtcall("seek", line));
}

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(0);
	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));
		msg("%s: %s", cmd, emsg);
		errno = atoi(&code[1]);
		if (*code == 'F')
			rmtstate = TS_CLOSED;
		return (-1);
	}
	if (*code != 'A') {
		/* Kill trailing newline */
		cp = code + strlen(code);
		if (cp > code && *--cp == '\n')
			*cp = '\0';

		msg("Protocol to remote tape server botched (code \"%s\").\n",
		    code);
		rmtconnaborted(0);
	}
	return (atoi(code + 1));
}

int
rmtgetb(void)
{
	char c;

	if (read(rmtape, &c, 1) != 1)
		rmtconnaborted(0);
	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';
	msg("Protocol to remote tape server botched.\n");
	msg("(rmtgets got \"%s\").\n", line);
	rmtconnaborted(0);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: dumprmt.c,v 1.29 2015/01/16 06:39:57 deraadt Exp $ */
2			/* $NetBSD: dumprmt.c,v 1.17 1997/06/05 16:10:47 mrg 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/param.h> /* MAXBSIZE */
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 <errno.h>
49			#include <pwd.h>
50			#include <signal.h>
51			#include <stdio.h>
52			#include <stdlib.h>
53			#include <string.h>
54			#include <unistd.h>
55			#include <limits.h>
56
57			#include "pathnames.h"
58			#include "dump.h"
59
60			#define TS_CLOSED 0
61			#define TS_OPEN 1
62
63			static int rmtstate = TS_CLOSED;
64			static int rmtape;
65			static char *rmtpeer;
66
67			static int okname(char *);
68			static int rmtcall(char , char );
69			static void rmtconnaborted(int);
70			static int rmtgetb(void);
71			static void rmtgetconn(void);
72			static void rmtgets(char *, int);
73			static int rmtreply(char *);
74
75			int rmthost(char *host);
76			int rmtopen(char *tape, int mode);
77			int rmtread(char *buf, int count);
78			int rmtwrite(char *buf, int count);
79			int rmtseek(int offset, int pos);
80			int rmtioctl(int cmd, int count);
81			void rmtclose(void);
82
83			extern int ntrec; /* blocking factor on tape */
84
85			int
86			rmthost(char *host)
87			{
88			int len = strlen(host) + 1;
89
90			rmtpeer = malloc(len);
91			if (rmtpeer)
92			strlcpy(rmtpeer, host, len);
93			else
94			rmtpeer = host;
95			signal(SIGPIPE, rmtconnaborted);
96			rmtgetconn();
97			if (rmtape < 0)
98			return (0);
99			return (1);
100			}
101
102			/* ARGSUSED */
103			static void
104			rmtconnaborted(int signo)
105			{
106			/* XXX signal race */
107			errx(X_ABORT, "Lost connection to remote host.");
108			}
109
110			void
111			rmtgetconn(void)
112			{
113			char *cp;
114			static struct servent *sp = NULL;
115			static struct passwd *pwd = NULL;
116			static int on = 1;
117			char tuser, name;
118			int size;
119			int maxseg;
120
121			if (sp == NULL) {
122			sp = getservbyname("shell", "tcp");
123			if (sp == NULL)
124			errx(X_STARTUP, "shell/tcp: unknown service");
125			pwd = getpwuid(getuid());
126			if (pwd == NULL)
127			errx(X_STARTUP, "who are you?");
128			}
129			if ((name = strdup(pwd->pw_name)) == NULL)
130			err(X_STARTUP, "malloc");
131			if ((cp = strchr(rmtpeer, '@')) != NULL) {
132			tuser = rmtpeer;
133			*cp = '\0';
134			if (!okname(tuser))
135			exit(X_STARTUP);
136			rmtpeer = ++cp;
137			} else
138			tuser = name;
139
140			rmtape = rcmd(&rmtpeer, sp->s_port, name, tuser, _PATH_RMT, NULL);
141			(void)free(name);
142			if (rmtape < 0)
143			return;
144
145			size = ntrec * TP_BSIZE;
146			if (size > 60 * 1024) /* XXX */
147			size = 60 * 1024;
148			/* Leave some space for rmt request/response protocol */
149			size += 2 * 1024;
150			while (size > TP_BSIZE &&
151			setsockopt(rmtape, SOL_SOCKET, SO_SNDBUF, &size, sizeof(size)) < 0)
152			size -= TP_BSIZE;
153			(void)setsockopt(rmtape, SOL_SOCKET, SO_RCVBUF, &size, sizeof(size));
154
155			maxseg = 1024;
156			(void)setsockopt(rmtape, IPPROTO_TCP, TCP_MAXSEG, &maxseg,
157			sizeof(maxseg));
158
159			(void) setsockopt(rmtape, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
160			}
161
162			static int
163			okname(char *cp0)
164			{
165			char *cp;
166			unsigned char c;
167
168			for (cp = cp0; *cp; cp++) {
169			c = *cp;
170			if (!isascii(c) \|\| !(isalnum(c) \|\| c == '_' \|\| c == '-')) {
171			warnx("invalid user name: %s", cp0);
172			return (0);
173			}
174			}
175			return (1);
176			}
177
178			int
179			rmtopen(char *tape, int mode)
180			{
181			char buf[256];
182
183			(void)snprintf(buf, sizeof(buf), "O%s\n%d\n", tape, mode);
184			rmtstate = TS_OPEN;
185			return (rmtcall(tape, buf));
186			}
187
188			void
189			rmtclose(void)
190			{
191
192			if (rmtstate != TS_OPEN)
193			return;
194			rmtcall("close", "C\n");
195			rmtstate = TS_CLOSED;
196			}
197
198			int
199			rmtread(char *buf, int count)
200			{
201			char line[30];
202			int n, i, cc;
203
204			(void)snprintf(line, sizeof(line), "R%d\n", count);
205			n = rmtcall("read", line);
206			if (n < 0) {
207			errno = n;
208			return (-1);
209			}
210			for (i = 0; i < n; i += cc) {
211			cc = read(rmtape, buf+i, n - i);
212			if (cc <= 0) {
213			rmtconnaborted(0);
214			}
215			}
216			return (n);
217			}
218
219			int
220			rmtwrite(char *buf, int count)
221			{
222			char line[30];
223
224			(void)snprintf(line, sizeof(line), "W%d\n", count);
225			write(rmtape, line, strlen(line));
226			write(rmtape, buf, count);
227			return (rmtreply("write"));
228			}
229
230			int
231			rmtseek(int offset, int pos)
232			{
233			char line[80];
234
235			(void)snprintf(line, sizeof(line), "L%d\n%d\n", offset, pos);
236			return (rmtcall("seek", line));
237			}
238
239			int
240			rmtioctl(int cmd, int count)
241			{
242			char buf[256];
243
244			if (count < 0)
245			return (-1);
246			(void)snprintf(buf, sizeof(buf), "I%d\n%d\n", cmd, count);
247			return (rmtcall("ioctl", buf));
248			}
249
250			static int
251			rmtcall(char cmd, char buf)
252			{
253
254			if (write(rmtape, buf, strlen(buf)) != strlen(buf))
255			rmtconnaborted(0);
256			return (rmtreply(cmd));
257			}
258
259			static int
260			rmtreply(char *cmd)
261			{
262			char *cp;
263			char code[30], emsg[BUFSIZ];
264
265			rmtgets(code, sizeof(code));
266			if (code == 'E' \|\| code == 'F') {
267			rmtgets(emsg, sizeof(emsg));
268			msg("%s: %s", cmd, emsg);
269			errno = atoi(&code[1]);
270			if (*code == 'F')
271			rmtstate = TS_CLOSED;
272			return (-1);
273			}
274			if (*code != 'A') {
275			/* Kill trailing newline */
276			cp = code + strlen(code);
277			if (cp > code && *--cp == '\n')
278			*cp = '\0';
279
280			msg("Protocol to remote tape server botched (code \"%s\").\n",
281			code);
282			rmtconnaborted(0);
283			}
284			return (atoi(code + 1));
285			}
286
287			int
288			rmtgetb(void)
289			{
290			char c;
291
292			if (read(rmtape, &c, 1) != 1)
293			rmtconnaborted(0);
294			return (c);
295			}
296
297			/* Get a line (guaranteed to have a trailing newline). */
298			void
299			rmtgets(char *line, int len)
300			{
301			char *cp = line;
302
303			while (len > 1) {
304			*cp = rmtgetb();
305			if (*cp == '\n') {
306			cp[1] = '\0';
307			return;
308			}
309			cp++;
310			len--;
311			}
312			*cp = '\0';
313			msg("Protocol to remote tape server botched.\n");
314			msg("(rmtgets got \"%s\").\n", line);
315			rmtconnaborted(0);
316			}