915 lines
19 KiB
C
915 lines
19 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1980, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)msgs.c 8.2 (Berkeley) 4/28/95";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* msgs - a user bulletin board program
|
|
*
|
|
* usage:
|
|
* msgs [fhlopq] [[-]number] to read messages
|
|
* msgs -s to place messages
|
|
* msgs -c [-days] to clean up the bulletin board
|
|
*
|
|
* prompt commands are:
|
|
* y print message
|
|
* n flush message, go to next message
|
|
* q flush message, quit
|
|
* p print message, turn on 'pipe thru more' mode
|
|
* P print message, turn off 'pipe thru more' mode
|
|
* - reprint last message
|
|
* s[-][<num>] [<filename>] save message
|
|
* m[-][<num>] mail with message in temp mbox
|
|
* x exit without flushing this message
|
|
* <num> print message number <num>
|
|
*/
|
|
|
|
#define V7 /* will look for TERM in the environment */
|
|
#define OBJECT /* will object to messages without Subjects */
|
|
/* #define REJECT */ /* will reject messages without Subjects
|
|
(OBJECT must be defined also) */
|
|
/* #define UNBUFFERED *//* use unbuffered output */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <ctype.h>
|
|
#include <dirent.h>
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <locale.h>
|
|
#include <pwd.h>
|
|
#include <setjmp.h>
|
|
#include <termcap.h>
|
|
#include <termios.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include "pathnames.h"
|
|
|
|
#define CMODE 0644 /* bounds file creation mode */
|
|
#define NO 0
|
|
#define YES 1
|
|
#define SUPERUSER 0 /* superuser uid */
|
|
#define DAEMON 1 /* daemon uid */
|
|
#define NLINES 24 /* default number of lines/crt screen */
|
|
#define NDAYS 21 /* default keep time for messages */
|
|
#define DAYS *24*60*60 /* seconds/day */
|
|
#define MSGSRC ".msgsrc" /* user's rc file */
|
|
#define BOUNDS "bounds" /* message bounds file */
|
|
#define NEXT "Next message? [yq]"
|
|
#define MORE "More? [ynq]"
|
|
#define NOMORE "(No more) [q] ?"
|
|
|
|
typedef char bool;
|
|
|
|
static FILE *msgsrc;
|
|
static FILE *newmsg;
|
|
static const char *sep = "-";
|
|
static char inbuf[BUFSIZ];
|
|
static char fname[MAXPATHLEN];
|
|
static char cmdbuf[MAXPATHLEN + MAXPATHLEN];
|
|
static char subj[128];
|
|
static char from[128];
|
|
static char date[128];
|
|
static char *ptr;
|
|
static char *in;
|
|
static bool local;
|
|
static bool ruptible;
|
|
static bool totty;
|
|
static bool seenfrom;
|
|
static bool seensubj;
|
|
static bool blankline;
|
|
static bool printing = NO;
|
|
static bool mailing = NO;
|
|
static bool quitit = NO;
|
|
static bool sending = NO;
|
|
static bool intrpflg = NO;
|
|
static uid_t uid;
|
|
static int msg;
|
|
static int prevmsg;
|
|
static int lct;
|
|
static int nlines;
|
|
static int Lpp = 0;
|
|
static time_t t;
|
|
static time_t keep;
|
|
|
|
/* option initialization */
|
|
static bool hdrs = NO;
|
|
static bool qopt = NO;
|
|
static bool hush = NO;
|
|
static bool send_msg = NO;
|
|
static bool locomode = NO;
|
|
static bool use_pager = NO;
|
|
static bool clean = NO;
|
|
static bool lastcmd = NO;
|
|
static jmp_buf tstpbuf;
|
|
|
|
static void ask(const char *);
|
|
static void gfrsub(FILE *);
|
|
static int linecnt(FILE *);
|
|
static int next(char *);
|
|
static char *nxtfld(char *);
|
|
static void onsusp(int);
|
|
static void onintr(int);
|
|
static void prmesg(int);
|
|
static void usage(void);
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
bool newrc, already;
|
|
int rcfirst = 0; /* first message to print (from .rc) */
|
|
int rcback = 0; /* amount to back off of rcfirst */
|
|
int firstmsg = 0, nextmsg = 0, lastmsg = 0;
|
|
int blast = 0;
|
|
struct stat buf; /* stat to check access of bounds */
|
|
FILE *bounds;
|
|
char *cp;
|
|
|
|
#ifdef UNBUFFERED
|
|
setbuf(stdout, NULL);
|
|
#endif
|
|
setlocale(LC_ALL, "");
|
|
|
|
time(&t);
|
|
if (setuid(uid = getuid()) != 0)
|
|
err(1, "setuid failed");
|
|
ruptible = (signal(SIGINT, SIG_IGN) == SIG_DFL);
|
|
if (ruptible)
|
|
signal(SIGINT, SIG_DFL);
|
|
|
|
argc--, argv++;
|
|
while (argc > 0) {
|
|
if (isdigit(argv[0][0])) { /* starting message # */
|
|
rcfirst = atoi(argv[0]);
|
|
}
|
|
else if (isdigit(argv[0][1])) { /* backward offset */
|
|
rcback = atoi( &( argv[0][1] ) );
|
|
}
|
|
else {
|
|
ptr = *argv;
|
|
while (*ptr) switch (*ptr++) {
|
|
|
|
case '-':
|
|
break;
|
|
|
|
case 'c':
|
|
if (uid != SUPERUSER && uid != DAEMON)
|
|
errx(1,
|
|
"only the super-user can use the c flag");
|
|
clean = YES;
|
|
break;
|
|
|
|
case 'f': /* silently */
|
|
hush = YES;
|
|
break;
|
|
|
|
case 'h': /* headers only */
|
|
hdrs = YES;
|
|
break;
|
|
|
|
case 'l': /* local msgs only */
|
|
locomode = YES;
|
|
break;
|
|
|
|
case 'o': /* option to save last message */
|
|
lastcmd = YES;
|
|
break;
|
|
|
|
case 'p': /* pipe thru 'more' during long msgs */
|
|
use_pager = YES;
|
|
break;
|
|
|
|
case 'q': /* query only */
|
|
qopt = YES;
|
|
break;
|
|
|
|
case 's': /* sending TO msgs */
|
|
send_msg = YES;
|
|
break;
|
|
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
argc--, argv++;
|
|
}
|
|
|
|
/*
|
|
* determine current message bounds
|
|
*/
|
|
snprintf(fname, sizeof(fname), "%s/%s", _PATH_MSGS, BOUNDS);
|
|
|
|
/*
|
|
* Test access rights to the bounds file
|
|
* This can be a little tricky. if(send_msg), then
|
|
* we will create it. We assume that if(send_msg),
|
|
* then you have write permission there.
|
|
* Else, it better be there, or we bail.
|
|
*/
|
|
if (send_msg != YES) {
|
|
if (stat(fname, &buf) < 0) {
|
|
if (hush != YES) {
|
|
err(errno, "%s", fname);
|
|
} else {
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
bounds = fopen(fname, "r");
|
|
|
|
if (bounds != NULL) {
|
|
fscanf(bounds, "%d %d\n", &firstmsg, &lastmsg);
|
|
fclose(bounds);
|
|
blast = lastmsg; /* save upper bound */
|
|
}
|
|
|
|
if (clean)
|
|
keep = t - (rcback? rcback : NDAYS) DAYS;
|
|
|
|
if (clean || bounds == NULL) { /* relocate message bounds */
|
|
struct dirent *dp;
|
|
struct stat stbuf;
|
|
bool seenany = NO;
|
|
DIR *dirp;
|
|
|
|
dirp = opendir(_PATH_MSGS);
|
|
if (dirp == NULL)
|
|
err(errno, "%s", _PATH_MSGS);
|
|
|
|
firstmsg = 32767;
|
|
lastmsg = 0;
|
|
|
|
for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){
|
|
cp = dp->d_name;
|
|
int i = 0;
|
|
|
|
if (dp->d_ino == 0)
|
|
continue;
|
|
if (dp->d_namlen == 0)
|
|
continue;
|
|
|
|
if (clean)
|
|
snprintf(inbuf, sizeof(inbuf), "%s/%s", _PATH_MSGS, cp);
|
|
|
|
while (isdigit(*cp))
|
|
i = i * 10 + *cp++ - '0';
|
|
if (*cp)
|
|
continue; /* not a message! */
|
|
|
|
if (clean) {
|
|
if (stat(inbuf, &stbuf) != 0)
|
|
continue;
|
|
if (stbuf.st_mtime < keep
|
|
&& stbuf.st_mode&S_IWRITE) {
|
|
unlink(inbuf);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (i > lastmsg)
|
|
lastmsg = i;
|
|
if (i < firstmsg)
|
|
firstmsg = i;
|
|
seenany = YES;
|
|
}
|
|
closedir(dirp);
|
|
|
|
if (!seenany) {
|
|
if (blast != 0) /* never lower the upper bound! */
|
|
lastmsg = blast;
|
|
firstmsg = lastmsg + 1;
|
|
}
|
|
else if (blast > lastmsg)
|
|
lastmsg = blast;
|
|
|
|
if (!send_msg) {
|
|
bounds = fopen(fname, "w");
|
|
if (bounds == NULL)
|
|
err(errno, "%s", fname);
|
|
chmod(fname, CMODE);
|
|
fprintf(bounds, "%d %d\n", firstmsg, lastmsg);
|
|
fclose(bounds);
|
|
}
|
|
}
|
|
|
|
if (send_msg) {
|
|
/*
|
|
* Send mode - place msgs in _PATH_MSGS
|
|
*/
|
|
bounds = fopen(fname, "w");
|
|
if (bounds == NULL)
|
|
err(errno, "%s", fname);
|
|
|
|
nextmsg = lastmsg + 1;
|
|
snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, nextmsg);
|
|
newmsg = fopen(fname, "w");
|
|
if (newmsg == NULL)
|
|
err(errno, "%s", fname);
|
|
chmod(fname, CMODE);
|
|
|
|
fprintf(bounds, "%d %d\n", firstmsg, nextmsg);
|
|
fclose(bounds);
|
|
|
|
sending = YES;
|
|
if (ruptible)
|
|
signal(SIGINT, onintr);
|
|
|
|
if (isatty(fileno(stdin))) {
|
|
ptr = getpwuid(uid)->pw_name;
|
|
printf("Message %d:\nFrom %s %sSubject: ",
|
|
nextmsg, ptr, ctime(&t));
|
|
fflush(stdout);
|
|
fgets(inbuf, sizeof inbuf, stdin);
|
|
putchar('\n');
|
|
fflush(stdout);
|
|
fprintf(newmsg, "From %s %sSubject: %s\n",
|
|
ptr, ctime(&t), inbuf);
|
|
blankline = seensubj = YES;
|
|
}
|
|
else
|
|
blankline = seensubj = NO;
|
|
for (;;) {
|
|
fgets(inbuf, sizeof inbuf, stdin);
|
|
if (feof(stdin) || ferror(stdin))
|
|
break;
|
|
blankline = (blankline || (inbuf[0] == '\n'));
|
|
seensubj = (seensubj || (!blankline && (strncmp(inbuf, "Subj", 4) == 0)));
|
|
fputs(inbuf, newmsg);
|
|
}
|
|
#ifdef OBJECT
|
|
if (!seensubj) {
|
|
printf("NOTICE: Messages should have a Subject field!\n");
|
|
#ifdef REJECT
|
|
unlink(fname);
|
|
#endif
|
|
exit(1);
|
|
}
|
|
#endif
|
|
exit(ferror(stdin));
|
|
}
|
|
if (clean)
|
|
exit(0);
|
|
|
|
/*
|
|
* prepare to display messages
|
|
*/
|
|
totty = (isatty(fileno(stdout)) != 0);
|
|
use_pager = use_pager && totty;
|
|
|
|
if ((cp = getenv("HOME")) == NULL || *cp == '\0') {
|
|
fprintf(stderr, "Error, no home directory!\n");
|
|
exit(1);
|
|
}
|
|
snprintf(fname, sizeof(fname), "%s/%s", cp, MSGSRC);
|
|
msgsrc = fopen(fname, "r");
|
|
if (msgsrc) {
|
|
newrc = NO;
|
|
fscanf(msgsrc, "%d\n", &nextmsg);
|
|
fclose(msgsrc);
|
|
if (nextmsg > lastmsg+1) {
|
|
printf("Warning: bounds have been reset (%d, %d)\n",
|
|
firstmsg, lastmsg);
|
|
truncate(fname, (off_t)0);
|
|
newrc = YES;
|
|
}
|
|
else if (!rcfirst)
|
|
rcfirst = nextmsg - rcback;
|
|
}
|
|
else
|
|
newrc = YES;
|
|
msgsrc = fopen(fname, "r+");
|
|
if (msgsrc == NULL)
|
|
msgsrc = fopen(fname, "w");
|
|
if (msgsrc == NULL)
|
|
err(errno, "%s", fname);
|
|
if (rcfirst) {
|
|
if (rcfirst > lastmsg+1) {
|
|
printf("Warning: the last message is number %d.\n",
|
|
lastmsg);
|
|
rcfirst = nextmsg;
|
|
}
|
|
if (rcfirst > firstmsg)
|
|
firstmsg = rcfirst; /* don't set below first msg */
|
|
}
|
|
if (newrc) {
|
|
nextmsg = firstmsg;
|
|
rewind(msgsrc);
|
|
fprintf(msgsrc, "%d\n", nextmsg);
|
|
fflush(msgsrc);
|
|
}
|
|
|
|
#ifdef V7
|
|
if (totty) {
|
|
struct winsize win;
|
|
if (ioctl(fileno(stdout), TIOCGWINSZ, &win) != -1)
|
|
Lpp = win.ws_row;
|
|
if (Lpp <= 0) {
|
|
if (tgetent(inbuf, getenv("TERM")) <= 0
|
|
|| (Lpp = tgetnum("li")) <= 0) {
|
|
Lpp = NLINES;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
Lpp -= 6; /* for headers, etc. */
|
|
|
|
already = NO;
|
|
prevmsg = firstmsg;
|
|
printing = YES;
|
|
if (ruptible)
|
|
signal(SIGINT, onintr);
|
|
|
|
/*
|
|
* Main program loop
|
|
*/
|
|
for (msg = firstmsg; msg <= lastmsg; msg++) {
|
|
|
|
snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, msg);
|
|
newmsg = fopen(fname, "r");
|
|
if (newmsg == NULL)
|
|
continue;
|
|
|
|
gfrsub(newmsg); /* get From and Subject fields */
|
|
if (locomode && !local) {
|
|
fclose(newmsg);
|
|
continue;
|
|
}
|
|
|
|
if (qopt) { /* This has to be located here */
|
|
printf("There are new messages.\n");
|
|
exit(0);
|
|
}
|
|
|
|
if (already && !hdrs)
|
|
putchar('\n');
|
|
|
|
/*
|
|
* Print header
|
|
*/
|
|
if (totty)
|
|
signal(SIGTSTP, onsusp);
|
|
(void) setjmp(tstpbuf);
|
|
already = YES;
|
|
nlines = 2;
|
|
if (seenfrom) {
|
|
printf("Message %d:\nFrom %s %s", msg, from, date);
|
|
nlines++;
|
|
}
|
|
if (seensubj) {
|
|
printf("Subject: %s", subj);
|
|
nlines++;
|
|
}
|
|
else {
|
|
if (seenfrom) {
|
|
putchar('\n');
|
|
nlines++;
|
|
}
|
|
while (nlines < 6
|
|
&& fgets(inbuf, sizeof inbuf, newmsg)
|
|
&& inbuf[0] != '\n') {
|
|
fputs(inbuf, stdout);
|
|
nlines++;
|
|
}
|
|
}
|
|
|
|
lct = linecnt(newmsg);
|
|
if (lct)
|
|
printf("(%d%sline%s) ", lct, seensubj? " " : " more ",
|
|
(lct == 1) ? "" : "s");
|
|
|
|
if (hdrs) {
|
|
printf("\n-----\n");
|
|
fclose(newmsg);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Ask user for command
|
|
*/
|
|
if (totty)
|
|
ask(lct? MORE : (msg==lastmsg? NOMORE : NEXT));
|
|
else
|
|
inbuf[0] = 'y';
|
|
if (totty)
|
|
signal(SIGTSTP, SIG_DFL);
|
|
cmnd:
|
|
in = inbuf;
|
|
switch (*in) {
|
|
case 'x':
|
|
/* FALLTHROUGH */
|
|
case 'X':
|
|
exit(0);
|
|
/* NOTREACHED */
|
|
|
|
case 'q':
|
|
/* FALLTHROUGH */
|
|
case 'Q':
|
|
quitit = YES;
|
|
printf("--Postponed--\n");
|
|
exit(0);
|
|
/* NOTREACHED */
|
|
|
|
case 'n':
|
|
/* FALLTHROUGH */
|
|
case 'N':
|
|
if (msg >= nextmsg) sep = "Flushed";
|
|
prevmsg = msg;
|
|
break;
|
|
|
|
case 'p':
|
|
/* FALLTHROUGH */
|
|
case 'P':
|
|
use_pager = (*in++ == 'p');
|
|
/* FALLTHROUGH */
|
|
case '\n':
|
|
/* FALLTHROUGH */
|
|
case 'y':
|
|
default:
|
|
if (*in == '-') {
|
|
msg = prevmsg-1;
|
|
sep = "replay";
|
|
break;
|
|
}
|
|
if (isdigit(*in)) {
|
|
msg = next(in);
|
|
sep = in;
|
|
break;
|
|
}
|
|
|
|
prmesg(nlines + lct + (seensubj? 1 : 0));
|
|
prevmsg = msg;
|
|
|
|
}
|
|
|
|
printf("--%s--\n", sep);
|
|
sep = "-";
|
|
if (msg >= nextmsg) {
|
|
nextmsg = msg + 1;
|
|
rewind(msgsrc);
|
|
fprintf(msgsrc, "%d\n", nextmsg);
|
|
fflush(msgsrc);
|
|
}
|
|
if (newmsg)
|
|
fclose(newmsg);
|
|
if (quitit)
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Make sure .rc file gets updated
|
|
*/
|
|
if (--msg >= nextmsg) {
|
|
nextmsg = msg + 1;
|
|
rewind(msgsrc);
|
|
fprintf(msgsrc, "%d\n", nextmsg);
|
|
fflush(msgsrc);
|
|
}
|
|
if (already && !quitit && lastcmd && totty) {
|
|
/*
|
|
* save or reply to last message?
|
|
*/
|
|
msg = prevmsg;
|
|
ask(NOMORE);
|
|
if (inbuf[0] == '-' || isdigit(inbuf[0]))
|
|
goto cmnd;
|
|
}
|
|
if (!(already || hush || qopt))
|
|
printf("No new messages.\n");
|
|
exit(0);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: msgs [fhlopq] [[-]number]\n");
|
|
exit(1);
|
|
}
|
|
|
|
static void
|
|
prmesg(int length)
|
|
{
|
|
FILE *outf;
|
|
char *env_pager;
|
|
|
|
if (use_pager && length > Lpp) {
|
|
signal(SIGPIPE, SIG_IGN);
|
|
signal(SIGQUIT, SIG_IGN);
|
|
if ((env_pager = getenv("PAGER")) == NULL) {
|
|
snprintf(cmdbuf, sizeof(cmdbuf), _PATH_PAGER, Lpp);
|
|
} else {
|
|
snprintf(cmdbuf, sizeof(cmdbuf), "%s", env_pager);
|
|
}
|
|
outf = popen(cmdbuf, "w");
|
|
if (!outf)
|
|
outf = stdout;
|
|
else
|
|
setbuf(outf, (char *)NULL);
|
|
}
|
|
else
|
|
outf = stdout;
|
|
|
|
if (seensubj)
|
|
putc('\n', outf);
|
|
|
|
while (fgets(inbuf, sizeof inbuf, newmsg)) {
|
|
fputs(inbuf, outf);
|
|
if (ferror(outf)) {
|
|
clearerr(outf);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (outf != stdout) {
|
|
pclose(outf);
|
|
signal(SIGPIPE, SIG_DFL);
|
|
signal(SIGQUIT, SIG_DFL);
|
|
}
|
|
else {
|
|
fflush(stdout);
|
|
}
|
|
|
|
/* force wait on output */
|
|
tcdrain(fileno(stdout));
|
|
}
|
|
|
|
static void
|
|
onintr(int unused __unused)
|
|
{
|
|
signal(SIGINT, onintr);
|
|
if (mailing)
|
|
unlink(fname);
|
|
if (sending) {
|
|
unlink(fname);
|
|
puts("--Killed--");
|
|
exit(1);
|
|
}
|
|
if (printing) {
|
|
putchar('\n');
|
|
if (hdrs)
|
|
exit(0);
|
|
sep = "Interrupt";
|
|
if (newmsg)
|
|
fseeko(newmsg, (off_t)0, SEEK_END);
|
|
intrpflg = YES;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We have just gotten a susp. Suspend and prepare to resume.
|
|
*/
|
|
static void
|
|
onsusp(int unused __unused)
|
|
{
|
|
signal(SIGTSTP, SIG_DFL);
|
|
sigsetmask(0);
|
|
kill(0, SIGTSTP);
|
|
signal(SIGTSTP, onsusp);
|
|
if (!mailing)
|
|
longjmp(tstpbuf, 0);
|
|
}
|
|
|
|
static int
|
|
linecnt(FILE *f)
|
|
{
|
|
off_t oldpos = ftello(f);
|
|
int l = 0;
|
|
char lbuf[BUFSIZ];
|
|
|
|
while (fgets(lbuf, sizeof lbuf, f))
|
|
l++;
|
|
clearerr(f);
|
|
fseeko(f, oldpos, SEEK_SET);
|
|
return (l);
|
|
}
|
|
|
|
static int
|
|
next(char *buf)
|
|
{
|
|
int i;
|
|
sscanf(buf, "%d", &i);
|
|
sprintf(buf, "Goto %d", i);
|
|
return(--i);
|
|
}
|
|
|
|
static void
|
|
ask(const char *prompt)
|
|
{
|
|
char inch;
|
|
int n, cmsg, fd;
|
|
off_t oldpos;
|
|
FILE *cpfrom, *cpto;
|
|
|
|
printf("%s ", prompt);
|
|
fflush(stdout);
|
|
intrpflg = NO;
|
|
(void) fgets(inbuf, sizeof inbuf, stdin);
|
|
if ((n = strlen(inbuf)) > 0 && inbuf[n - 1] == '\n')
|
|
inbuf[n - 1] = '\0';
|
|
if (intrpflg)
|
|
inbuf[0] = 'x';
|
|
|
|
/*
|
|
* Handle 'mail' and 'save' here.
|
|
*/
|
|
if ((inch = inbuf[0]) == 's' || inch == 'm') {
|
|
if (inbuf[1] == '-')
|
|
cmsg = prevmsg;
|
|
else if (isdigit(inbuf[1]))
|
|
cmsg = atoi(&inbuf[1]);
|
|
else
|
|
cmsg = msg;
|
|
snprintf(fname, sizeof(fname), "%s/%d", _PATH_MSGS, cmsg);
|
|
|
|
oldpos = ftello(newmsg);
|
|
|
|
cpfrom = fopen(fname, "r");
|
|
if (!cpfrom) {
|
|
printf("Message %d not found\n", cmsg);
|
|
ask (prompt);
|
|
return;
|
|
}
|
|
|
|
if (inch == 's') {
|
|
in = nxtfld(inbuf);
|
|
if (*in) {
|
|
for (n=0; in[n] > ' '; n++) { /* sizeof fname? */
|
|
fname[n] = in[n];
|
|
}
|
|
fname[n] = '\0';
|
|
}
|
|
else
|
|
strcpy(fname, "Messages");
|
|
fd = open(fname, O_RDWR|O_EXCL|O_CREAT|O_APPEND);
|
|
}
|
|
else {
|
|
strcpy(fname, _PATH_TMP);
|
|
fd = mkstemp(fname);
|
|
if (fd != -1) {
|
|
snprintf(cmdbuf, sizeof(cmdbuf), _PATH_MAIL,
|
|
fname);
|
|
mailing = YES;
|
|
}
|
|
}
|
|
if (fd == -1 || (cpto = fdopen(fd, "a")) == NULL) {
|
|
if (fd != -1)
|
|
close(fd);
|
|
warn("%s", fname);
|
|
mailing = NO;
|
|
fseeko(newmsg, oldpos, SEEK_SET);
|
|
ask(prompt);
|
|
fclose(cpfrom);
|
|
return;
|
|
}
|
|
|
|
while ((n = fread(inbuf, 1, sizeof inbuf, cpfrom)))
|
|
fwrite(inbuf, 1, n, cpto);
|
|
|
|
fclose(cpfrom);
|
|
fclose(cpto);
|
|
fseeko(newmsg, oldpos, SEEK_SET);/* reposition current message */
|
|
if (inch == 's')
|
|
printf("Message %d saved in \"%s\"\n", cmsg, fname);
|
|
else {
|
|
system(cmdbuf);
|
|
unlink(fname);
|
|
mailing = NO;
|
|
}
|
|
ask(prompt);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gfrsub(FILE *infile)
|
|
{
|
|
off_t frompos;
|
|
int count;
|
|
|
|
seensubj = seenfrom = NO;
|
|
local = YES;
|
|
subj[0] = from[0] = date[0] = '\0';
|
|
|
|
/*
|
|
* Is this a normal message?
|
|
*/
|
|
if (fgets(inbuf, sizeof inbuf, infile)) {
|
|
if (strncmp(inbuf, "From", 4)==0) {
|
|
/*
|
|
* expected form starts with From
|
|
*/
|
|
seenfrom = YES;
|
|
frompos = ftello(infile);
|
|
ptr = from;
|
|
in = nxtfld(inbuf);
|
|
if (*in) {
|
|
count = sizeof(from) - 1;
|
|
while (*in && *in > ' ' && count-- > 0) {
|
|
if (*in == ':' || *in == '@' ||
|
|
*in == '!')
|
|
local = NO;
|
|
*ptr++ = *in++;
|
|
}
|
|
}
|
|
*ptr = '\0';
|
|
if (*(in = nxtfld(in)))
|
|
strlcpy(date, in, sizeof date);
|
|
else {
|
|
date[0] = '\n';
|
|
date[1] = '\0';
|
|
}
|
|
}
|
|
else {
|
|
/*
|
|
* not the expected form
|
|
*/
|
|
rewind(infile);
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
/*
|
|
* empty file ?
|
|
*/
|
|
return;
|
|
|
|
/*
|
|
* look for Subject line until EOF or a blank line
|
|
*/
|
|
while (fgets(inbuf, sizeof inbuf, infile)
|
|
&& !(blankline = (inbuf[0] == '\n'))) {
|
|
/*
|
|
* extract Subject line
|
|
*/
|
|
if (!seensubj && strncmp(inbuf, "Subj", 4)==0) {
|
|
seensubj = YES;
|
|
frompos = ftello(infile);
|
|
strlcpy(subj, nxtfld(inbuf), sizeof subj);
|
|
}
|
|
}
|
|
if (!blankline)
|
|
/*
|
|
* ran into EOF
|
|
*/
|
|
fseeko(infile, frompos, SEEK_SET);
|
|
|
|
if (!seensubj)
|
|
/*
|
|
* for possible use with Mail
|
|
*/
|
|
strlcpy(subj, "(No Subject)\n", sizeof subj);
|
|
}
|
|
|
|
static char *
|
|
nxtfld(char *s)
|
|
{
|
|
if (*s) while (*s && !isspace(*s)) s++; /* skip over this field */
|
|
if (*s) while (*s && isspace(*s)) s++; /* find start of next field */
|
|
return (s);
|
|
}
|