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- /*
- * C M D 1 . C
- *
- * EE/CIS Computer Lab
- * Department of Computer and Information Sciences
- * Department of Electrical Engineering
- * University of Delaware
- *
- * REVISION HISTORY:
- *
- * $Revision: 1.6 $
- *
- * $Log: cmd1.c,v $
- * Revision 1.6 86/01/14 14:09:45 galvin
- * Let's not be lazy and use MMDF's smtpdate and makedate to parse the
- * date of message into something nice (if we can). Since the new
- * something nice is smaller than the older mess, allow more room for the
- * subject line to print.
- *
- * Revision 1.5 86/01/07 13:42:35 galvin
- * Change printhead to use the new parse return value. Be
- * lazy and if parse couldn't figure out the date, then use
- * the contents of the "Date" header field as is. It probably
- * should be parsed into something nice, but ... .
- *
- * Revision 1.4 85/12/18 13:19:14 galvin
- * Add another argument to send to indicate whether or not this
- * message should be delimited by MMDF message delimiters.
- *
- * Revision 1.3 85/11/20 14:31:24 galvin
- * Changed the name of the command table (cmdtab) to CmdTab so as not
- * to conflict with the command table of MMDF.
- *
- * Revision 1.2 85/11/20 14:24:51 galvin
- * Added comment header for revision history.
- *
- *
- */
-
- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved. The Berkeley software License Agreement
- * specifies the terms and conditions for redistribution.
- */
-
- #ifndef lint
- static char *sccsid = "@(#)cmd1.c 5.2 (Berkeley) 6/21/85";
- #endif not lint
-
- #include "./rcv.h"
- #include <sys/stat.h>
-
- /*
- * Mail -- a mail program
- *
- * User commands.
- */
-
- /*
- * Print the current active headings.
- * Don't change dot if invoker didn't give an argument.
- */
-
- static int screen;
-
- headers(msgvec)
- int *msgvec;
- {
- register int n, mesg, flag;
- register struct message *mp;
- int size;
-
- size = screensize();
- n = msgvec[0];
- if (n != 0)
- screen = (n-1)/size;
- if (screen < 0)
- screen = 0;
- mp = &message[screen * size];
- if (mp >= &message[msgCount])
- mp = &message[msgCount - size];
- if (mp < &message[0])
- mp = &message[0];
- flag = 0;
- mesg = mp - &message[0];
- if (dot != &message[n-1])
- dot = mp;
- for (; mp < &message[msgCount]; mp++) {
- mesg++;
- if (mp->m_flag & MDELETED)
- continue;
- if (flag++ >= size)
- break;
- printhead(mesg);
- sreset();
- }
- if (flag == 0) {
- printf("No more mail.\n");
- return(1);
- }
- return(0);
- }
-
- /*
- * Set the list of alternate names for out host.
- */
- local(namelist)
- char **namelist;
- {
- register int c;
- register char **ap, **ap2, *cp;
-
- c = argcount(namelist) + 1;
- if (c == 1) {
- if (localnames == 0)
- return(0);
- for (ap = localnames; *ap; ap++)
- printf("%s ", *ap);
- printf("\n");
- return(0);
- }
- if (localnames != 0)
- cfree((char *) localnames);
- localnames = (char **) calloc((unsigned) c, sizeof (char *));
- for (ap = namelist, ap2 = localnames; *ap; ap++, ap2++) {
- cp = (char *) calloc((unsigned) (strlen(*ap) + 1),
- sizeof (char));
- strcpy(cp, *ap);
- *ap2 = cp;
- }
- *ap2 = 0;
- return(0);
- }
-
- /*
- * Scroll to the next/previous screen
- */
-
- scroll(arg)
- char arg[];
- {
- register int s, size;
- int cur[1];
-
- cur[0] = 0;
- size = screensize();
- s = screen;
- switch (*arg) {
- case 0:
- case '+':
- s++;
- if (s * size > msgCount) {
- printf("On last screenful of messages\n");
- return(0);
- }
- screen = s;
- break;
-
- case '-':
- if (--s < 0) {
- printf("On first screenful of messages\n");
- return(0);
- }
- screen = s;
- break;
-
- default:
- printf("Unrecognized scrolling command \"%s\"\n", arg);
- return(1);
- }
- return(headers(cur));
- }
-
- /*
- * Compute what the screen size should be.
- * We use the following algorithm:
- * If user specifies with screen option, use that.
- * If baud rate < 1200, use 5
- * If baud rate = 1200, use 10
- * If baud rate > 1200, use 20
- */
- screensize()
- {
- register char *cp;
- register int s;
- #ifdef TIOCGWINSZ
- struct winsize ws;
- #endif
-
- if ((cp = value("screen")) != NOSTR) {
- s = atoi(cp);
- if (s > 0)
- return(s);
- }
- if (baud < B1200)
- s = 5;
- else if (baud == B1200)
- s = 10;
- #ifdef TIOCGWINSZ
- else if (ioctl(fileno(stdout), TIOCGWINSZ, &ws) == 0 && ws.ws_row != 0)
- s = ws.ws_row - 4;
- #endif
- else
- s = 20;
- return(s);
- }
-
- /*
- * Print out the headlines for each message
- * in the passed message list.
- */
-
- from(msgvec)
- int *msgvec;
- {
- register int *ip;
-
- for (ip = msgvec; *ip != NULL; ip++) {
- printhead(*ip);
- sreset();
- }
- if (--ip >= msgvec)
- dot = &message[*ip - 1];
- return(0);
- }
-
- /*
- * Print out the header of a specific message.
- * This is a slight improvement to the standard one.
- */
-
- printhead(mesg)
- {
- struct message *mp;
- FILE *ibuf;
- char headline[LINESIZE], wcount[10], *subjline, dispc, curind;
- char pbuf[BUFSIZ];
- int s;
- long smtpdate();
- long date;
- struct headline hl;
- register char *cp;
-
- mp = &message[mesg-1];
- ibuf = setinput(mp);
- readline(ibuf, headline);
- subjline = hfield("subject", mp);
- if (subjline == NOSTR)
- subjline = hfield("subj", mp);
-
- /*
- * Bletch!
- */
-
- if (subjline != NOSTR && strlen(subjline) > 34)
- subjline[35] = '\0';
- curind = dot == mp ? '>' : ' ';
- dispc = ' ';
- if (mp->m_flag & MSAVED)
- dispc = '*';
- if (mp->m_flag & MPRESERVE)
- dispc = 'P';
- if ((mp->m_flag & (MREAD|MNEW)) == MNEW)
- dispc = 'N';
- if ((mp->m_flag & (MREAD|MNEW)) == 0)
- dispc = 'U';
- if (mp->m_flag & MBOX)
- dispc = 'M';
- if (parse(headline, &hl, pbuf))
- if ((cp = hfield("date", mp)) != NOSTR)
- if ((date = smtpdate(cp)) != -1L) {
- makedate(&date, headline);
- headline[9] = '\0';
- hl.l_date = savestr(headline);
- }
- else
- hl.l_date = cp;
- sprintf(wcount, " %d/%ld", mp->m_lines, mp->m_size);
- s = strlen(wcount);
- cp = wcount + s;
- while (s < 7)
- s++, *cp++ = ' ';
- *cp = '\0';
- if (subjline != NOSTR)
- printf("%c%c%3d %-8.8s %9.9s %s \"%s\"\n", curind, dispc,
- mesg, nameof(mp, 0), hl.l_date, wcount, subjline);
- else
- printf("%c%c%3d %-8.8s %9.9s %s\n", curind, dispc, mesg,
- nameof(mp, 0), hl.l_date, wcount);
- }
-
- /*
- * Print out the value of dot.
- */
-
- pdot()
- {
- printf("%d\n", dot - &message[0] + 1);
- return(0);
- }
-
- /*
- * Print out all the possible commands.
- */
-
- pcmdlist()
- {
- register struct cmd *cp;
- register int cc;
- extern struct cmd CmdTab[];
-
- printf("Commands are:\n");
- for (cc = 0, cp = CmdTab; cp->c_name != NULL; cp++) {
- cc += strlen(cp->c_name) + 2;
- if (cc > 72) {
- printf("\n");
- cc = strlen(cp->c_name) + 2;
- }
- if ((cp+1)->c_name != NOSTR)
- printf("%s, ", cp->c_name);
- else
- printf("%s\n", cp->c_name);
- }
- return(0);
- }
-
- /*
- * Paginate messages, honor ignored fields.
- */
- more(msgvec)
- int *msgvec;
- {
- return (type1(msgvec, 1, 1));
- }
-
- /*
- * Paginate messages, even printing ignored fields.
- */
- More(msgvec)
- int *msgvec;
- {
-
- return (type1(msgvec, 0, 1));
- }
-
- /*
- * Type out messages, honor ignored fields.
- */
- type(msgvec)
- int *msgvec;
- {
-
- return(type1(msgvec, 1, 0));
- }
-
- /*
- * Type out messages, even printing ignored fields.
- */
- Type(msgvec)
- int *msgvec;
- {
-
- return(type1(msgvec, 0, 0));
- }
-
- /*
- * Type out the messages requested.
- */
- jmp_buf pipestop;
-
- type1(msgvec, doign, page)
- int *msgvec;
- {
- register *ip;
- register struct message *mp;
- register int mesg;
- register char *cp;
- int nlines;
- int brokpipe();
- FILE *obuf;
-
- obuf = stdout;
- if (setjmp(pipestop)) {
- if (obuf != stdout) {
- pipef = NULL;
- pclose(obuf);
- }
- sigset(SIGPIPE, SIG_DFL);
- return(0);
- }
- if (intty && outtty && (page || (cp = value("crt")) != NOSTR)) {
- if (!page) {
- nlines = 0;
- for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++)
- nlines += message[*ip - 1].m_lines;
- }
- if (page || nlines > atoi(cp)) {
- obuf = popen(MORE, "w");
- if (obuf == NULL) {
- perror(MORE);
- obuf = stdout;
- }
- else {
- pipef = obuf;
- sigset(SIGPIPE, brokpipe);
- }
- }
- }
- for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
- mesg = *ip;
- touch(mesg);
- mp = &message[mesg-1];
- dot = mp;
- print(mp, obuf, doign);
- }
- if (obuf != stdout) {
- pipef = NULL;
- pclose(obuf);
- }
- sigset(SIGPIPE, SIG_DFL);
- return(0);
- }
-
- /*
- * Respond to a broken pipe signal --
- * probably caused by using quitting more.
- */
-
- brokpipe()
- {
- # ifndef VMUNIX
- signal(SIGPIPE, brokpipe);
- # endif
- longjmp(pipestop, 1);
- }
-
- /*
- * Print the indicated message on standard output.
- */
-
- print(mp, obuf, doign)
- register struct message *mp;
- FILE *obuf;
- {
-
- if (value("quiet") == NOSTR)
- fprintf(obuf, "Message %2d:\n", mp - &message[0] + 1);
- touch(mp - &message[0] + 1);
- send(mp, obuf, doign, 0);
- }
-
- /*
- * Print the top so many lines of each desired message.
- * The number of lines is taken from the variable "toplines"
- * and defaults to 5.
- */
-
- top(msgvec)
- int *msgvec;
- {
- register int *ip;
- register struct message *mp;
- register int mesg;
- int c, topl, lines, lineb;
- char *valtop, linebuf[LINESIZE];
- FILE *ibuf;
-
- topl = 5;
- valtop = value("toplines");
- if (valtop != NOSTR) {
- topl = atoi(valtop);
- if (topl < 0 || topl > 10000)
- topl = 5;
- }
- lineb = 1;
- for (ip = msgvec; *ip && ip-msgvec < msgCount; ip++) {
- mesg = *ip;
- touch(mesg);
- mp = &message[mesg-1];
- dot = mp;
- if (value("quiet") == NOSTR)
- printf("Message %2d:\n", mesg);
- ibuf = setinput(mp);
- c = mp->m_lines;
- if (!lineb)
- printf("\n");
- for (lines = 0; lines < c && lines <= topl; lines++) {
- if (readline(ibuf, linebuf) <= 0)
- break;
- puts(linebuf);
- lineb = blankline(linebuf);
- }
- }
- return(0);
- }
-
- /*
- * Touch all the given messages so that they will
- * get mboxed.
- */
-
- stouch(msgvec)
- int msgvec[];
- {
- register int *ip;
-
- for (ip = msgvec; *ip != 0; ip++) {
- dot = &message[*ip-1];
- dot->m_flag |= MTOUCH;
- dot->m_flag &= ~MPRESERVE;
- }
- return(0);
- }
-
- /*
- * Make sure all passed messages get mboxed.
- */
-
- mboxit(msgvec)
- int msgvec[];
- {
- register int *ip;
-
- for (ip = msgvec; *ip != 0; ip++) {
- dot = &message[*ip-1];
- dot->m_flag |= MTOUCH|MBOX;
- dot->m_flag &= ~MPRESERVE;
- }
- return(0);
- }
-
- /*
- * List the folders the user currently has.
- */
- folders()
- {
- char dirname[BUFSIZ];
- int pid, s, e;
-
- if (getfold(dirname) < 0) {
- printf("No value set for \"folder\"\n");
- return(-1);
- }
- switch ((pid = fork())) {
- case 0:
- sigchild();
- execlp("ls", "ls", dirname, 0);
- _exit(1);
-
- case -1:
- perror("fork");
- return(-1);
-
- default:
- while ((e = wait(&s)) != -1 && e != pid)
- ;
- }
- return(0);
- }
-