diff options
Diffstat (limited to 'usr.bin/msgs/msgs.c')
-rw-r--r-- | usr.bin/msgs/msgs.c | 863 |
1 files changed, 0 insertions, 863 deletions
diff --git a/usr.bin/msgs/msgs.c b/usr.bin/msgs/msgs.c deleted file mode 100644 index 9a5311a..0000000 --- a/usr.bin/msgs/msgs.c +++ /dev/null @@ -1,863 +0,0 @@ -/*- - * 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. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. 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 char copyright[] = -"@(#) Copyright (c) 1980, 1993\n\ - The Regents of the University of California. All rights reserved.\n"; -#endif /* not lint */ - -#ifndef lint -static char sccsid[] = "@(#)msgs.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -/* - * 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/dir.h> -#include <sys/stat.h> -#include <ctype.h> -#include <errno.h> -#include <pwd.h> -#include <setjmp.h> -#include <sgtty.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#include "pathnames.h" - -#define CMODE 0666 /* 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; - -FILE *msgsrc; -FILE *newmsg; -char *sep = "-"; -char inbuf[BUFSIZ]; -char fname[128]; -char cmdbuf[128]; -char subj[128]; -char from[128]; -char date[128]; -char *ptr; -char *in; -bool local; -bool ruptible; -bool totty; -bool seenfrom; -bool seensubj; -bool blankline; -bool printing = NO; -bool mailing = NO; -bool quitit = NO; -bool sending = NO; -bool intrpflg = NO; -int uid; -int msg; -int prevmsg; -int lct; -int nlines; -int Lpp = 0; -time_t t; -time_t keep; -struct sgttyb otty; - -char *mktemp(); -char *nxtfld(); -void onintr(); -void onsusp(); - -/* option initialization */ -bool hdrs = NO; -bool qopt = NO; -bool hush = NO; -bool send_msg = NO; -bool locomode = NO; -bool use_pager = NO; -bool clean = NO; -bool lastcmd = NO; -jmp_buf tstpbuf; - -main(argc, argv) -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, nextmsg, lastmsg = 0; - int blast = 0; - FILE *bounds; - -#ifdef UNBUFFERED - setbuf(stdout, NULL); -#endif - - gtty(fileno(stdout), &otty); - time(&t); - setuid(uid = getuid()); - 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) { - fprintf(stderr, "Sorry\n"); - exit(1); - } - 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: - fprintf(stderr, - "usage: msgs [fhlopq] [[-]number]\n"); - exit(1); - } - } - argc--, argv++; - } - - /* - * determine current message bounds - */ - sprintf(fname, "%s/%s", _PATH_MSGS, BOUNDS); - 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 direct *dp; - struct stat stbuf; - bool seenany = NO; - DIR *dirp; - - dirp = opendir(_PATH_MSGS); - if (dirp == NULL) { - perror(_PATH_MSGS); - exit(errno); - } - - firstmsg = 32767; - lastmsg = 0; - - for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)){ - register char *cp = dp->d_name; - register int i = 0; - - if (dp->d_ino == 0) - continue; - if (dp->d_namlen == 0) - continue; - - if (clean) - sprintf(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) { - perror(fname); - exit(errno); - } - 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) { - perror(fname); - exit(errno); - } - - nextmsg = lastmsg + 1; - sprintf(fname, "%s/%d", _PATH_MSGS, nextmsg); - newmsg = fopen(fname, "w"); - if (newmsg == NULL) { - perror(fname); - exit(errno); - } - chmod(fname, 0644); - - 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; - - sprintf(fname, "%s/%s", getenv("HOME"), 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) { - perror(fname); - exit(errno); - } - 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; - fseek(msgsrc, 0L, 0); - 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++) { - - sprintf(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%slines) ", lct, seensubj? " " : " more "); - - 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': - case 'X': - exit(0); - - case 'q': - case 'Q': - quitit = YES; - printf("--Postponed--\n"); - exit(0); - /* intentional fall-thru */ - case 'n': - case 'N': - if (msg >= nextmsg) sep = "Flushed"; - prevmsg = msg; - break; - - case 'p': - case 'P': - use_pager = (*in++ == 'p'); - /* intentional fallthru */ - case '\n': - 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; - fseek(msgsrc, 0L, 0); - 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; - fseek(msgsrc, 0L, 0); - 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); -} - -prmesg(length) -int length; -{ - FILE *outf; - - if (use_pager && length > Lpp) { - signal(SIGPIPE, SIG_IGN); - signal(SIGQUIT, SIG_IGN); - sprintf(cmdbuf, _PATH_PAGER, Lpp); - 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); - } - - /* trick to force wait on output */ - stty(fileno(stdout), &otty); -} - -void -onintr() -{ - 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) - fseek(newmsg, 0L, 2); - intrpflg = YES; - } -} - -/* - * We have just gotten a susp. Suspend and prepare to resume. - */ -void -onsusp() -{ - - signal(SIGTSTP, SIG_DFL); - sigsetmask(0); - kill(0, SIGTSTP); - signal(SIGTSTP, onsusp); - if (!mailing) - longjmp(tstpbuf, 0); -} - -linecnt(f) -FILE *f; -{ - off_t oldpos = ftell(f); - int l = 0; - char lbuf[BUFSIZ]; - - while (fgets(lbuf, sizeof lbuf, f)) - l++; - clearerr(f); - fseek(f, oldpos, 0); - return (l); -} - -next(buf) -char *buf; -{ - int i; - sscanf(buf, "%d", &i); - sprintf(buf, "Goto %d", i); - return(--i); -} - -ask(prompt) -char *prompt; -{ - char inch; - int n, cmsg; - 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; - sprintf(fname, "%s/%d", _PATH_MSGS, cmsg); - - oldpos = ftell(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] = NULL; - } - else - strcpy(fname, "Messages"); - } - else { - strcpy(fname, _PATH_TMP); - mktemp(fname); - sprintf(cmdbuf, _PATH_MAIL, fname); - mailing = YES; - } - cpto = fopen(fname, "a"); - if (!cpto) { - perror(fname); - mailing = NO; - fseek(newmsg, oldpos, 0); - ask(prompt); - return; - } - - while (n = fread(inbuf, 1, sizeof inbuf, cpfrom)) - fwrite(inbuf, 1, n, cpto); - - fclose(cpfrom); - fclose(cpto); - fseek(newmsg, oldpos, 0); /* reposition current message */ - if (inch == 's') - printf("Message %d saved in \"%s\"\n", cmsg, fname); - else { - system(cmdbuf); - unlink(fname); - mailing = NO; - } - ask(prompt); - } -} - -gfrsub(infile) -FILE *infile; -{ - off_t frompos; - - seensubj = seenfrom = NO; - local = YES; - subj[0] = from[0] = date[0] = NULL; - - /* - * 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 = ftell(infile); - ptr = from; - in = nxtfld(inbuf); - if (*in) while (*in && *in > ' ') { - if (*in == ':' || *in == '@' || *in == '!') - local = NO; - *ptr++ = *in++; - /* what about sizeof from ? */ - } - *ptr = NULL; - if (*(in = nxtfld(in))) - strncpy(date, in, sizeof date); - else { - date[0] = '\n'; - date[1] = NULL; - } - } - else { - /* - * not the expected form - */ - fseek(infile, 0L, 0); - 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 = ftell(infile); - strncpy(subj, nxtfld(inbuf), sizeof subj); - } - } - if (!blankline) - /* - * ran into EOF - */ - fseek(infile, frompos, 0); - - if (!seensubj) - /* - * for possible use with Mail - */ - strncpy(subj, "(No Subject)\n", sizeof subj); -} - -char * -nxtfld(s) -char *s; -{ - if (*s) while (*s && *s > ' ') s++; /* skip over this field */ - if (*s) while (*s && *s <= ' ') s++; /* find start of next field */ - return (s); -} |