mirror of
https://git.FreeBSD.org/src.git
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0fa46a4231
Obtained from: DragonFlyBSD MFC after: 1 week
215 lines
5.1 KiB
C
215 lines
5.1 KiB
C
/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "rcv.h"
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#include <fcntl.h>
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#include "extern.h"
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/*
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* Mail -- a mail program
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*
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* Perform message editing functions.
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*/
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/*
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* Edit a message list.
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*/
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int
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editor(int *msgvec)
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{
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return (edit1(msgvec, 'e'));
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}
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/*
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* Invoke the visual editor on a message list.
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*/
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int
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visual(int *msgvec)
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{
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return (edit1(msgvec, 'v'));
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}
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/*
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* Edit a message by writing the message into a funnily-named file
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* (which should not exist) and forking an editor on it.
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* We get the editor from the stuff above.
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*/
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int
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edit1(int *msgvec, int type)
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{
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int c, i;
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FILE *fp;
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struct message *mp;
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off_t size;
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/*
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* Deal with each message to be edited . . .
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*/
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for (i = 0; i < msgCount && msgvec[i]; i++) {
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sig_t sigint;
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if (i > 0) {
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char buf[100];
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char *p;
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printf("Edit message %d [ynq]? ", msgvec[i]);
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if (fgets(buf, sizeof(buf), stdin) == NULL)
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break;
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for (p = buf; *p == ' ' || *p == '\t'; p++)
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;
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if (*p == 'q')
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break;
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if (*p == 'n')
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continue;
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}
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dot = mp = &message[msgvec[i] - 1];
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touch(mp);
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sigint = signal(SIGINT, SIG_IGN);
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fp = run_editor(setinput(mp), mp->m_size, type, readonly);
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if (fp != NULL) {
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(void)fseeko(otf, (off_t)0, SEEK_END);
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size = ftello(otf);
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mp->m_block = blockof(size);
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mp->m_offset = boffsetof(size);
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mp->m_size = (long)fsize(fp);
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mp->m_lines = 0;
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mp->m_flag |= MODIFY;
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rewind(fp);
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while ((c = getc(fp)) != EOF) {
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if (c == '\n')
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mp->m_lines++;
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if (putc(c, otf) == EOF)
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break;
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}
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if (ferror(otf))
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warnx("/tmp");
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(void)Fclose(fp);
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}
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(void)signal(SIGINT, sigint);
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}
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return (0);
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}
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/*
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* Run an editor on the file at "fpp" of "size" bytes,
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* and return a new file pointer.
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* Signals must be handled by the caller.
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* "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI.
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*/
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FILE *
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run_editor(FILE *fp, off_t size, int type, int readonly)
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{
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FILE *nf = NULL;
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int t;
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time_t modtime;
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char *edit, tempname[PATHSIZE];
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struct stat statb;
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(void)snprintf(tempname, sizeof(tempname),
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"%s/mail.ReXXXXXXXXXX", tmpdir);
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if ((t = mkstemp(tempname)) == -1 ||
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(nf = Fdopen(t, "w")) == NULL) {
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warn("%s", tempname);
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goto out;
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}
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if (readonly && fchmod(t, 0400) == -1) {
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warn("%s", tempname);
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(void)rm(tempname);
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goto out;
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}
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if (size >= 0)
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while (--size >= 0 && (t = getc(fp)) != EOF)
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(void)putc(t, nf);
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else
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while ((t = getc(fp)) != EOF)
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(void)putc(t, nf);
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(void)fflush(nf);
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if (fstat(fileno(nf), &statb) < 0)
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modtime = 0;
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else
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modtime = statb.st_mtime;
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if (ferror(nf)) {
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(void)Fclose(nf);
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warnx("%s", tempname);
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(void)rm(tempname);
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nf = NULL;
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goto out;
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}
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if (Fclose(nf) < 0) {
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warn("%s", tempname);
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(void)rm(tempname);
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nf = NULL;
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goto out;
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}
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nf = NULL;
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if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NULL)
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edit = type == 'e' ? _PATH_EX : _PATH_VI;
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if (run_command(edit, 0, -1, -1, tempname, NULL, NULL) < 0) {
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(void)rm(tempname);
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goto out;
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}
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/*
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* If in read only mode or file unchanged, just remove the editor
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* temporary and return.
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*/
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if (readonly) {
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(void)rm(tempname);
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goto out;
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}
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if (stat(tempname, &statb) < 0) {
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warn("%s", tempname);
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goto out;
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}
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if (modtime == statb.st_mtime) {
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(void)rm(tempname);
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goto out;
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}
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/*
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* Now switch to new file.
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*/
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if ((nf = Fopen(tempname, "a+")) == NULL) {
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warn("%s", tempname);
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(void)rm(tempname);
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goto out;
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}
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(void)rm(tempname);
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out:
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return (nf);
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}
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