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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/cu/command.c	Lines:	0	117	0.0 %
Date:	2017-11-13	Branches:	0	96	0.0 %


/* $OpenBSD: command.c,v 1.15 2015/10/05 23:15:31 nicm Exp $ */

/*
 * Copyright (c) 2012 Nicholas Marriott <nicm@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/wait.h>

#include <event.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

#include "cu.h"

void	pipe_command(void);
void	connect_command(void);
void	send_file(void);
void	send_xmodem(void);
void	set_speed(void);
void	start_record(void);

void
pipe_command(void)
{
	const char	*cmd;
	pid_t		 pid;
	int		 fd;

	cmd = get_input("Local command?");
	if (cmd == NULL || *cmd == '\0')
		return;

	restore_termios();
	set_blocking(line_fd, 1);

	switch (pid = fork()) {
	case -1:
		cu_err(1, "fork");
	case 0:
		fd = open(_PATH_DEVNULL, O_RDWR);
		if (fd < 0 || dup2(fd, STDIN_FILENO) == -1)
			_exit(1);
		close(fd);

		if (signal(SIGINT, SIG_DFL) == SIG_ERR)
			_exit(1);
		if (signal(SIGQUIT, SIG_DFL) == SIG_ERR)
			_exit(1);

		/* attach stdout to line */
		if (dup2(line_fd, STDOUT_FILENO) == -1)
			_exit(1);

		if (closefrom(STDERR_FILENO + 1) != 0)
			_exit(1);

		execl(_PATH_BSHELL, "sh", "-c", cmd, (char *)NULL);
		_exit(1);
	default:
		while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
			/* nothing */;
		break;
	}

	set_blocking(line_fd, 0);
	set_termios();
}

void
connect_command(void)
{
	const char	*cmd;
	pid_t		 pid;

	/*
	 * Fork a program with:
	 *  0 <-> remote tty in
	 *  1 <-> remote tty out
	 *  2 <-> local tty stderr
	 */

	cmd = get_input("Local command?");
	if (cmd == NULL || *cmd == '\0')
		return;

	restore_termios();
	set_blocking(line_fd, 1);

	switch (pid = fork()) {
	case -1:
		cu_err(1, "fork");
	case 0:
		if (signal(SIGINT, SIG_DFL) == SIG_ERR)
			_exit(1);
		if (signal(SIGQUIT, SIG_DFL) == SIG_ERR)
			_exit(1);

		/* attach stdout and stdin to line */
		if (dup2(line_fd, STDOUT_FILENO) == -1)
			_exit(1);
		if (dup2(line_fd, STDIN_FILENO) == -1)
			_exit(1);

		if (closefrom(STDERR_FILENO + 1) != 0)
			_exit(1);

		execl(_PATH_BSHELL, "sh", "-c", cmd, (char *)NULL);
		_exit(1);
	default:
		while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
			/* nothing */;
		break;
	}

	set_blocking(line_fd, 0);
	set_termios();
}

void
send_file(void)
{
	const char	*file;
	FILE		*f;
	char		 buf[BUFSIZ], *expanded;
	size_t		 len;

	file = get_input("Local file?");
	if (file == NULL || *file == '\0')
		return;

	expanded = tilde_expand(file);
	f = fopen(expanded, "r");
	if (f == NULL) {
		cu_warn("%s", file);
		return;
	}

	while (!feof(f) && !ferror(f)) {
		len = fread(buf, 1, sizeof(buf), f);
		if (len != 0)
			bufferevent_write(line_ev, buf, len);
	}

	fclose(f);
	free(expanded);
}

void
send_xmodem(void)
{
	const char	*file;
	char		*expanded;

	file = get_input("Local file?");
	if (file == NULL || *file == '\0')
		return;

	expanded = tilde_expand(file);
	xmodem_send(expanded);
	free(expanded);
}

void
set_speed(void)
{
	const char	*s, *errstr;
	int		 speed;

	s = get_input("New speed?");
	if (s == NULL || *s == '\0')
		return;

	speed = strtonum(s, 0, UINT_MAX, &errstr);
	if (errstr != NULL) {
		cu_warnx("speed is %s: %s", errstr, s);
		return;
	}

	if (set_line(speed) != 0)
		cu_warn("tcsetattr");
}

void
start_record(void)
{
	const char	*file;

	if (record_file != NULL) {
		fclose(record_file);
		record_file = NULL;
	}

	file = get_input("Record file?");
	if (file == NULL || *file == '\0')
		return;

	record_file = fopen(file, "a");
	if (record_file == NULL)
		cu_warnx("%s", file);
}

void
do_command(char c)
{
	switch (c) {
	case '.':
	case '\004': /* ^D */
		event_loopexit(NULL);
		break;
	case '\032': /* ^Z */
		restore_termios();
		kill(getpid(), SIGTSTP);
		set_termios();
		break;
	case 'C':
		connect_command();
		break;
	case 'D':
		ioctl(line_fd, TIOCCDTR, NULL);
		sleep(1);
		ioctl(line_fd, TIOCSDTR, NULL);
		break;
	case 'R':
		start_record();
		break;
	case 'S':
		set_speed();
		break;
	case 'X':
		send_xmodem();
		break;
	case '$':
		pipe_command();
		break;
	case '>':
		send_file();
		break;
	case '#':
		ioctl(line_fd, TIOCSBRK, NULL);
		sleep(1);
		ioctl(line_fd, TIOCCBRK, NULL);
		break;
	case '~':
		bufferevent_write(line_ev, "~", 1);
		break;
	case '?':
		printf("\r\n"
		    "~#      send break\r\n"
		    "~$      pipe local command to remote host\r\n"
		    "~>      send file to remote host\r\n"
		    "~C      connect program to remote host\r\n"
		    "~D      de-assert DTR line briefly\r\n"
		    "~R      start recording to file\r\n"
		    "~S      set speed\r\n"
		    "~X      send file with XMODEM\r\n"
		    "~?      get this summary\r\n"
		);
		break;
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: command.c,v 1.15 2015/10/05 23:15:31 nicm Exp $ */
2
3			/*
4			* Copyright (c) 2012 Nicholas Marriott <nicm@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15			* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16			* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <sys/types.h>
20			#include <sys/ioctl.h>
21			#include <sys/wait.h>
22
23			#include <event.h>
24			#include <errno.h>
25			#include <fcntl.h>
26			#include <limits.h>
27			#include <paths.h>
28			#include <signal.h>
29			#include <stdlib.h>
30			#include <stdio.h>
31			#include <unistd.h>
32
33			#include "cu.h"
34
35			void pipe_command(void);
36			void connect_command(void);
37			void send_file(void);
38			void send_xmodem(void);
39			void set_speed(void);
40			void start_record(void);
41
42			void
43			pipe_command(void)
44			{
45			const char *cmd;
46			pid_t pid;
47			int fd;
48
49			cmd = get_input("Local command?");
50			if (cmd == NULL \|\| *cmd == '\0')
51			return;
52
53			restore_termios();
54			set_blocking(line_fd, 1);
55
56			switch (pid = fork()) {
57			case -1:
58			cu_err(1, "fork");
59			case 0:
60			fd = open(_PATH_DEVNULL, O_RDWR);
61			if (fd < 0 \|\| dup2(fd, STDIN_FILENO) == -1)
62			_exit(1);
63			close(fd);
64
65			if (signal(SIGINT, SIG_DFL) == SIG_ERR)
66			_exit(1);
67			if (signal(SIGQUIT, SIG_DFL) == SIG_ERR)
68			_exit(1);
69
70			/* attach stdout to line */
71			if (dup2(line_fd, STDOUT_FILENO) == -1)
72			_exit(1);
73
74			if (closefrom(STDERR_FILENO + 1) != 0)
75			_exit(1);
76
77			execl(_PATH_BSHELL, "sh", "-c", cmd, (char *)NULL);
78			_exit(1);
79			default:
80			while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
81			/* nothing */;
82			break;
83			}
84
85			set_blocking(line_fd, 0);
86			set_termios();
87			}
88
89			void
90			connect_command(void)
91			{
92			const char *cmd;
93			pid_t pid;
94
95			/*
96			* Fork a program with:
97			* 0 <-> remote tty in
98			* 1 <-> remote tty out
99			* 2 <-> local tty stderr
100			*/
101
102			cmd = get_input("Local command?");
103			if (cmd == NULL \|\| *cmd == '\0')
104			return;
105
106			restore_termios();
107			set_blocking(line_fd, 1);
108
109			switch (pid = fork()) {
110			case -1:
111			cu_err(1, "fork");
112			case 0:
113			if (signal(SIGINT, SIG_DFL) == SIG_ERR)
114			_exit(1);
115			if (signal(SIGQUIT, SIG_DFL) == SIG_ERR)
116			_exit(1);
117
118			/* attach stdout and stdin to line */
119			if (dup2(line_fd, STDOUT_FILENO) == -1)
120			_exit(1);
121			if (dup2(line_fd, STDIN_FILENO) == -1)
122			_exit(1);
123
124			if (closefrom(STDERR_FILENO + 1) != 0)
125			_exit(1);
126
127			execl(_PATH_BSHELL, "sh", "-c", cmd, (char *)NULL);
128			_exit(1);
129			default:
130			while (waitpid(pid, NULL, 0) == -1 && errno == EINTR)
131			/* nothing */;
132			break;
133			}
134
135			set_blocking(line_fd, 0);
136			set_termios();
137			}
138
139			void
140			send_file(void)
141			{
142			const char *file;
143			FILE *f;
144			char buf[BUFSIZ], *expanded;
145			size_t len;
146
147			file = get_input("Local file?");
148			if (file == NULL \|\| *file == '\0')
149			return;
150
151			expanded = tilde_expand(file);
152			f = fopen(expanded, "r");
153			if (f == NULL) {
154			cu_warn("%s", file);
155			return;
156			}
157
158			while (!feof(f) && !ferror(f)) {
159			len = fread(buf, 1, sizeof(buf), f);
160			if (len != 0)
161			bufferevent_write(line_ev, buf, len);
162			}
163
164			fclose(f);
165			free(expanded);
166			}
167
168			void
169			send_xmodem(void)
170			{
171			const char *file;
172			char *expanded;
173
174			file = get_input("Local file?");
175			if (file == NULL \|\| *file == '\0')
176			return;
177
178			expanded = tilde_expand(file);
179			xmodem_send(expanded);
180			free(expanded);
181			}
182
183			void
184			set_speed(void)
185			{
186			const char s, errstr;
187			int speed;
188
189			s = get_input("New speed?");
190			if (s == NULL \|\| *s == '\0')
191			return;
192
193			speed = strtonum(s, 0, UINT_MAX, &errstr);
194			if (errstr != NULL) {
195			cu_warnx("speed is %s: %s", errstr, s);
196			return;
197			}
198
199			if (set_line(speed) != 0)
200			cu_warn("tcsetattr");
201			}
202
203			void
204			start_record(void)
205			{
206			const char *file;
207
208			if (record_file != NULL) {
209			fclose(record_file);
210			record_file = NULL;
211			}
212
213			file = get_input("Record file?");
214			if (file == NULL \|\| *file == '\0')
215			return;
216
217			record_file = fopen(file, "a");
218			if (record_file == NULL)
219			cu_warnx("%s", file);
220			}
221
222			void
223			do_command(char c)
224			{
225			switch (c) {
226			case '.':
227			case '\004': /* ^D */
228			event_loopexit(NULL);
229			break;
230			case '\032': /* ^Z */
231			restore_termios();
232			kill(getpid(), SIGTSTP);
233			set_termios();
234			break;
235			case 'C':
236			connect_command();
237			break;
238			case 'D':
239			ioctl(line_fd, TIOCCDTR, NULL);
240			sleep(1);
241			ioctl(line_fd, TIOCSDTR, NULL);
242			break;
243			case 'R':
244			start_record();
245			break;
246			case 'S':
247			set_speed();
248			break;
249			case 'X':
250			send_xmodem();
251			break;
252			case '$':
253			pipe_command();
254			break;
255			case '>':
256			send_file();
257			break;
258			case '#':
259			ioctl(line_fd, TIOCSBRK, NULL);
260			sleep(1);
261			ioctl(line_fd, TIOCCBRK, NULL);
262			break;
263			case '~':
264			bufferevent_write(line_ev, "~", 1);
265			break;
266			case '?':
267			printf("\r\n"
268			"~# send break\r\n"
269			"~$ pipe local command to remote host\r\n"
270			"~> send file to remote host\r\n"
271			"~C connect program to remote host\r\n"
272			"~D de-assert DTR line briefly\r\n"
273			"~R start recording to file\r\n"
274			"~S set speed\r\n"
275			"~X send file with XMODEM\r\n"
276			"~? get this summary\r\n"
277			);
278			break;
279			}
280			}