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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/mail/edit.c	Lines:	0	133	0.0 %
Date:	2017-11-13	Branches:	0	126	0.0 %


/*	$OpenBSD: edit.c,v 1.20 2017/03/28 09:14:43 natano Exp $	*/
/*	$NetBSD: edit.c,v 1.5 1996/06/08 19:48:20 christos 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/wait.h>

#include "rcv.h"
#include <errno.h>
#include <fcntl.h>
#include "extern.h"

int editit(const char *, const char *);

/*
 * Mail -- a mail program
 *
 * Perform message editing functions.
 */

/*
 * Edit a message list.
 */
int
editor(void *v)
{
	int *msgvec = v;

	return(edit1(msgvec, 'e'));
}

/*
 * Invoke the visual editor on a message list.
 */
int
visual(void *v)
{
	int *msgvec = v;

	return(edit1(msgvec, 'v'));
}

/*
 * Edit a message by writing the message into a funnily-named file
 * (which should not exist) and forking an editor on it.
 * We get the editor from the stuff above.
 */
int
edit1(int *msgvec, int type)
{
	int nl = 0, c, i;
	FILE *fp;
	struct sigaction oact;
	sigset_t oset;
	struct message *mp;
	off_t size;

	/*
	 * Deal with each message to be edited . . .
	 */
	for (i = 0; msgvec[i] && i < msgCount; i++) {
		if (i > 0) {
			char buf[100];
			char *p;

			printf("Edit message %d [ynq]? ", msgvec[i]);
			if (fgets(buf, sizeof(buf), stdin) == NULL)
				break;
			for (p = buf; *p == ' ' || *p == '\t'; p++)
				;
			if (*p == 'q')
				break;
			if (*p == 'n')
				continue;
		}
		dot = mp = &message[msgvec[i] - 1];
		touch(mp);
		(void)ignoresig(SIGINT, &oact, &oset);
		fp = run_editor(setinput(mp), (off_t)mp->m_size, type, readonly);
		if (fp != NULL) {
			(void)fseek(otf, 0L, SEEK_END);
			size = ftell(otf);
			mp->m_block = blockof(size);
			mp->m_offset = offsetof(size);
			mp->m_size = fsize(fp);
			mp->m_lines = 0;
			mp->m_flag |= MODIFY;
			rewind(fp);
			while ((c = getc(fp)) != EOF) {
				if (c == '\n') {
					mp->m_lines++;
					nl++;
				} else
					nl = 0;
				if (putc(c, otf) == EOF)
					break;
			}
			for (; nl < 2; nl++) {
				mp->m_lines++;
				mp->m_size++;
				putc('\n', otf);
			}
			if (ferror(otf))
				warn("%s", tmpdir);
			(void)Fclose(fp);
		}
		(void)sigprocmask(SIG_SETMASK, &oset, NULL);
		(void)sigaction(SIGINT, &oact, NULL);
	}
	return(0);
}

/*
 * Run an editor on the file at "fpp" of "size" bytes,
 * and return a new file pointer.
 * Signals must be handled by the caller.
 * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI.
 */
FILE *
run_editor(FILE *fp, off_t size, int type, int readonly)
{
	FILE *nf = NULL;
	int t;
	time_t modtime;
	char *edit, tempname[PATHSIZE];
	struct stat statb;

	(void)snprintf(tempname, sizeof(tempname),
	    "%s/mail.ReXXXXXXXXXX", tmpdir);
	if ((t = mkstemp(tempname)) == -1 ||
	    (nf = Fdopen(t, "w")) == NULL) {
		warn("%s", tempname);
		goto out;
	}
	if (readonly && fchmod(t, 0400) == -1) {
		warn("%s", tempname);
		(void)rm(tempname);
		goto out;
	}
	if (size >= 0)
		while (--size >= 0 && (t = getc(fp)) != EOF)
			(void)putc(t, nf);
	else
		while ((t = getc(fp)) != EOF)
			(void)putc(t, nf);
	(void)fflush(nf);
	if (fstat(fileno(nf), &statb) < 0)
		modtime = 0;
	else
		modtime = statb.st_mtime;
	if (ferror(nf)) {
		(void)Fclose(nf);
		warn("%s", tempname);
		(void)rm(tempname);
		nf = NULL;
		goto out;
	}
	if (Fclose(nf) < 0) {
		warn("%s", tempname);
		(void)rm(tempname);
		nf = NULL;
		goto out;
	}
	nf = NULL;
	if (type == 'e') {
		edit = value("EDITOR");
		if (edit == NULL || edit[0] == '\0')
			edit = _PATH_EX;
	} else {
		edit = value("VISUAL");
		if (edit == NULL || edit[0] == '\0')
			edit = _PATH_VI;
	}
	if (editit(edit, tempname) == -1) {
		(void)rm(tempname);
		goto out;
	}
	/*
	 * If in read only mode or file unchanged, just remove the editor
	 * temporary and return.
	 */
	if (readonly) {
		(void)rm(tempname);
		goto out;
	}
	if (stat(tempname, &statb) < 0) {
		warn("%s", tempname);
		goto out;
	}
	if (modtime == statb.st_mtime) {
		(void)rm(tempname);
		goto out;
	}
	/*
	 * Now switch to new file.
	 */
	if ((nf = Fopen(tempname, "a+")) == NULL) {
		warn("%s", tempname);
		(void)rm(tempname);
		goto out;
	}
	(void)rm(tempname);
out:
	return(nf);
}

/*
 * Execute an editor on the specified pathname, which is interpreted
 * from the shell.  This means flags may be included.
 *
 * Returns -1 on error, or the exit value on success.
 */
int
editit(const char *ed, const char *pathname)
{
	char *argp[] = {"sh", "-c", NULL, NULL}, *p;
	sig_t sighup, sigint, sigquit, sigchld;
	pid_t pid;
	int saved_errno, st, ret = -1;

	if (ed == NULL)
		ed = getenv("VISUAL");
	if (ed == NULL || ed[0] == '\0')
		ed = getenv("EDITOR");
	if (ed == NULL || ed[0] == '\0')
		ed = _PATH_VI;
	if (asprintf(&p, "%s %s", ed, pathname) == -1)
		return (-1);
	argp[2] = p;

	sighup = signal(SIGHUP, SIG_IGN);
	sigint = signal(SIGINT, SIG_IGN);
	sigquit = signal(SIGQUIT, SIG_IGN);
	sigchld = signal(SIGCHLD, SIG_DFL);
	if ((pid = fork()) == -1)
		goto fail;
	if (pid == 0) {
		execv(_PATH_BSHELL, argp);
		_exit(127);
	}
	while (waitpid(pid, &st, 0) == -1)
		if (errno != EINTR)
			goto fail;
	if (!WIFEXITED(st))
		errno = EINTR;
	else
		ret = WEXITSTATUS(st);

 fail:
	saved_errno = errno;
	(void)signal(SIGHUP, sighup);
	(void)signal(SIGINT, sigint);
	(void)signal(SIGQUIT, sigquit);
	(void)signal(SIGCHLD, sigchld);
	free(p);
	errno = saved_errno;
	return (ret);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: edit.c,v 1.20 2017/03/28 09:14:43 natano Exp $ */
2			/* $NetBSD: edit.c,v 1.5 1996/06/08 19:48:20 christos 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/wait.h>
35
36			#include "rcv.h"
37			#include <errno.h>
38			#include <fcntl.h>
39			#include "extern.h"
40
41			int editit(const char , const char );
42
43			/*
44			* Mail -- a mail program
45			*
46			* Perform message editing functions.
47			*/
48
49			/*
50			* Edit a message list.
51			*/
52			int
53			editor(void *v)
54			{
55			int *msgvec = v;
56
57			return(edit1(msgvec, 'e'));
58			}
59
60			/*
61			* Invoke the visual editor on a message list.
62			*/
63			int
64			visual(void *v)
65			{
66			int *msgvec = v;
67
68			return(edit1(msgvec, 'v'));
69			}
70
71			/*
72			* Edit a message by writing the message into a funnily-named file
73			* (which should not exist) and forking an editor on it.
74			* We get the editor from the stuff above.
75			*/
76			int
77			edit1(int *msgvec, int type)
78			{
79			int nl = 0, c, i;
80			FILE *fp;
81			struct sigaction oact;
82			sigset_t oset;
83			struct message *mp;
84			off_t size;
85
86			/*
87			* Deal with each message to be edited . . .
88			*/
89			for (i = 0; msgvec[i] && i < msgCount; i++) {
90			if (i > 0) {
91			char buf[100];
92			char *p;
93
94			printf("Edit message %d [ynq]? ", msgvec[i]);
95			if (fgets(buf, sizeof(buf), stdin) == NULL)
96			break;
97			for (p = buf; p == ' ' \|\| p == '\t'; p++)
98			;
99			if (*p == 'q')
100			break;
101			if (*p == 'n')
102			continue;
103			}
104			dot = mp = &message[msgvec[i] - 1];
105			touch(mp);
106			(void)ignoresig(SIGINT, &oact, &oset);
107			fp = run_editor(setinput(mp), (off_t)mp->m_size, type, readonly);
108			if (fp != NULL) {
109			(void)fseek(otf, 0L, SEEK_END);
110			size = ftell(otf);
111			mp->m_block = blockof(size);
112			mp->m_offset = offsetof(size);
113			mp->m_size = fsize(fp);
114			mp->m_lines = 0;
115			mp->m_flag \|= MODIFY;
116			rewind(fp);
117			while ((c = getc(fp)) != EOF) {
118			if (c == '\n') {
119			mp->m_lines++;
120			nl++;
121			} else
122			nl = 0;
123			if (putc(c, otf) == EOF)
124			break;
125			}
126			for (; nl < 2; nl++) {
127			mp->m_lines++;
128			mp->m_size++;
129			putc('\n', otf);
130			}
131			if (ferror(otf))
132			warn("%s", tmpdir);
133			(void)Fclose(fp);
134			}
135			(void)sigprocmask(SIG_SETMASK, &oset, NULL);
136			(void)sigaction(SIGINT, &oact, NULL);
137			}
138			return(0);
139			}
140
141			/*
142			* Run an editor on the file at "fpp" of "size" bytes,
143			* and return a new file pointer.
144			* Signals must be handled by the caller.
145			* "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI.
146			*/
147			FILE *
148			run_editor(FILE *fp, off_t size, int type, int readonly)
149			{
150			FILE *nf = NULL;
151			int t;
152			time_t modtime;
153			char *edit, tempname[PATHSIZE];
154			struct stat statb;
155
156			(void)snprintf(tempname, sizeof(tempname),
157			"%s/mail.ReXXXXXXXXXX", tmpdir);
158			if ((t = mkstemp(tempname)) == -1 \|\|
159			(nf = Fdopen(t, "w")) == NULL) {
160			warn("%s", tempname);
161			goto out;
162			}
163			if (readonly && fchmod(t, 0400) == -1) {
164			warn("%s", tempname);
165			(void)rm(tempname);
166			goto out;
167			}
168			if (size >= 0)
169			while (--size >= 0 && (t = getc(fp)) != EOF)
170			(void)putc(t, nf);
171			else
172			while ((t = getc(fp)) != EOF)
173			(void)putc(t, nf);
174			(void)fflush(nf);
175			if (fstat(fileno(nf), &statb) < 0)
176			modtime = 0;
177			else
178			modtime = statb.st_mtime;
179			if (ferror(nf)) {
180			(void)Fclose(nf);
181			warn("%s", tempname);
182			(void)rm(tempname);
183			nf = NULL;
184			goto out;
185			}
186			if (Fclose(nf) < 0) {
187			warn("%s", tempname);
188			(void)rm(tempname);
189			nf = NULL;
190			goto out;
191			}
192			nf = NULL;
193			if (type == 'e') {
194			edit = value("EDITOR");
195			if (edit == NULL \|\| edit[0] == '\0')
196			edit = _PATH_EX;
197			} else {
198			edit = value("VISUAL");
199			if (edit == NULL \|\| edit[0] == '\0')
200			edit = _PATH_VI;
201			}
202			if (editit(edit, tempname) == -1) {
203			(void)rm(tempname);
204			goto out;
205			}
206			/*
207			* If in read only mode or file unchanged, just remove the editor
208			* temporary and return.
209			*/
210			if (readonly) {
211			(void)rm(tempname);
212			goto out;
213			}
214			if (stat(tempname, &statb) < 0) {
215			warn("%s", tempname);
216			goto out;
217			}
218			if (modtime == statb.st_mtime) {
219			(void)rm(tempname);
220			goto out;
221			}
222			/*
223			* Now switch to new file.
224			*/
225			if ((nf = Fopen(tempname, "a+")) == NULL) {
226			warn("%s", tempname);
227			(void)rm(tempname);
228			goto out;
229			}
230			(void)rm(tempname);
231			out:
232			return(nf);
233			}
234
235			/*
236			* Execute an editor on the specified pathname, which is interpreted
237			* from the shell. This means flags may be included.
238			*
239			* Returns -1 on error, or the exit value on success.
240			*/
241			int
242			editit(const char ed, const char pathname)
243			{
244			char argp[] = {"sh", "-c", NULL, NULL}, p;
245			sig_t sighup, sigint, sigquit, sigchld;
246			pid_t pid;
247			int saved_errno, st, ret = -1;
248
249			if (ed == NULL)
250			ed = getenv("VISUAL");
251			if (ed == NULL \|\| ed[0] == '\0')
252			ed = getenv("EDITOR");
253			if (ed == NULL \|\| ed[0] == '\0')
254			ed = _PATH_VI;
255			if (asprintf(&p, "%s %s", ed, pathname) == -1)
256			return (-1);
257			argp[2] = p;
258
259			sighup = signal(SIGHUP, SIG_IGN);
260			sigint = signal(SIGINT, SIG_IGN);
261			sigquit = signal(SIGQUIT, SIG_IGN);
262			sigchld = signal(SIGCHLD, SIG_DFL);
263			if ((pid = fork()) == -1)
264			goto fail;
265			if (pid == 0) {
266			execv(_PATH_BSHELL, argp);
267			_exit(127);
268			}
269			while (waitpid(pid, &st, 0) == -1)
270			if (errno != EINTR)
271			goto fail;
272			if (!WIFEXITED(st))
273			errno = EINTR;
274			else
275			ret = WEXITSTATUS(st);
276
277			fail:
278			saved_errno = errno;
279			(void)signal(SIGHUP, sighup);
280			(void)signal(SIGINT, sigint);
281			(void)signal(SIGQUIT, sigquit);
282			(void)signal(SIGCHLD, sigchld);
283			free(p);
284			errno = saved_errno;
285			return (ret);
286			}