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-rw-r--r--usr.bin/mail/main.c296
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diff --git a/usr.bin/mail/main.c b/usr.bin/mail/main.c
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+/*
+ * 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[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "rcv.h"
+#include <fcntl.h>
+#include "extern.h"
+
+/*
+ * Mail -- a mail program
+ *
+ * Startup -- interface with user.
+ */
+
+jmp_buf hdrjmp;
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ register int i;
+ struct name *to, *cc, *bcc, *smopts;
+ char *subject;
+ char *ef;
+ char nosrc = 0;
+ void hdrstop();
+ sig_t prevint;
+ void sigchild();
+
+ /*
+ * Set up a reasonable environment.
+ * Figure out whether we are being run interactively,
+ * start the SIGCHLD catcher, and so forth.
+ */
+ (void) signal(SIGCHLD, sigchild);
+ if (isatty(0))
+ assign("interactive", "");
+ image = -1;
+ /*
+ * Now, determine how we are being used.
+ * We successively pick off - flags.
+ * If there is anything left, it is the base of the list
+ * of users to mail to. Argp will be set to point to the
+ * first of these users.
+ */
+ ef = NOSTR;
+ to = NIL;
+ cc = NIL;
+ bcc = NIL;
+ smopts = NIL;
+ subject = NOSTR;
+ while ((i = getopt(argc, argv, "INT:b:c:dfins:u:v")) != EOF) {
+ switch (i) {
+ case 'T':
+ /*
+ * Next argument is temp file to write which
+ * articles have been read/deleted for netnews.
+ */
+ Tflag = optarg;
+ if ((i = creat(Tflag, 0600)) < 0) {
+ perror(Tflag);
+ exit(1);
+ }
+ close(i);
+ break;
+ case 'u':
+ /*
+ * Next argument is person to pretend to be.
+ */
+ myname = optarg;
+ break;
+ case 'i':
+ /*
+ * User wants to ignore interrupts.
+ * Set the variable "ignore"
+ */
+ assign("ignore", "");
+ break;
+ case 'd':
+ debug++;
+ break;
+ case 's':
+ /*
+ * Give a subject field for sending from
+ * non terminal
+ */
+ subject = optarg;
+ break;
+ case 'f':
+ /*
+ * User is specifying file to "edit" with Mail,
+ * as opposed to reading system mailbox.
+ * If no argument is given after -f, we read his
+ * mbox file.
+ *
+ * getopt() can't handle optional arguments, so here
+ * is an ugly hack to get around it.
+ */
+ if ((argv[optind]) && (argv[optind][0] != '-'))
+ ef = argv[optind++];
+ else
+ ef = "&";
+ break;
+ case 'n':
+ /*
+ * User doesn't want to source /usr/lib/Mail.rc
+ */
+ nosrc++;
+ break;
+ case 'N':
+ /*
+ * Avoid initial header printing.
+ */
+ assign("noheader", "");
+ break;
+ case 'v':
+ /*
+ * Send mailer verbose flag
+ */
+ assign("verbose", "");
+ break;
+ case 'I':
+ /*
+ * We're interactive
+ */
+ assign("interactive", "");
+ break;
+ case 'c':
+ /*
+ * Get Carbon Copy Recipient list
+ */
+ cc = cat(cc, nalloc(optarg, GCC));
+ break;
+ case 'b':
+ /*
+ * Get Blind Carbon Copy Recipient list
+ */
+ bcc = cat(bcc, nalloc(optarg, GBCC));
+ break;
+ case '?':
+ fputs("\
+Usage: mail [-iInv] [-s subject] [-c cc-addr] [-b bcc-addr] to-addr ...\n\
+ [- sendmail-options ...]\n\
+ mail [-iInNv] -f [name]\n\
+ mail [-iInNv] [-u user]\n",
+ stderr);
+ exit(1);
+ }
+ }
+ for (i = optind; (argv[i]) && (*argv[i] != '-'); i++)
+ to = cat(to, nalloc(argv[i], GTO));
+ for (; argv[i]; i++)
+ smopts = cat(smopts, nalloc(argv[i], 0));
+ /*
+ * Check for inconsistent arguments.
+ */
+ if (to == NIL && (subject != NOSTR || cc != NIL || bcc != NIL)) {
+ fputs("You must specify direct recipients with -s, -c, or -b.\n", stderr);
+ exit(1);
+ }
+ if (ef != NOSTR && to != NIL) {
+ fprintf(stderr, "Cannot give -f and people to send to.\n");
+ exit(1);
+ }
+ tinit();
+ setscreensize();
+ input = stdin;
+ rcvmode = !to;
+ spreserve();
+ if (!nosrc)
+ load(_PATH_MASTER_RC);
+ /*
+ * Expand returns a savestr, but load only uses the file name
+ * for fopen, so it's safe to do this.
+ */
+ load(expand("~/.mailrc"));
+ if (!rcvmode) {
+ mail(to, cc, bcc, smopts, subject);
+ /*
+ * why wait?
+ */
+ exit(senderr);
+ }
+ /*
+ * Ok, we are reading mail.
+ * Decide whether we are editing a mailbox or reading
+ * the system mailbox, and open up the right stuff.
+ */
+ if (ef == NOSTR)
+ ef = "%";
+ if (setfile(ef) < 0)
+ exit(1); /* error already reported */
+ if (setjmp(hdrjmp) == 0) {
+ extern char *version;
+
+ if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
+ signal(SIGINT, hdrstop);
+ if (value("quiet") == NOSTR)
+ printf("Mail version %s. Type ? for help.\n",
+ version);
+ announce();
+ fflush(stdout);
+ signal(SIGINT, prevint);
+ }
+ commands();
+ signal(SIGHUP, SIG_IGN);
+ signal(SIGINT, SIG_IGN);
+ signal(SIGQUIT, SIG_IGN);
+ quit();
+ exit(0);
+}
+
+/*
+ * Interrupt printing of the headers.
+ */
+void
+hdrstop(signo)
+ int signo;
+{
+
+ fflush(stdout);
+ fprintf(stderr, "\nInterrupt\n");
+ longjmp(hdrjmp, 1);
+}
+
+/*
+ * Compute what the screen size for printing headers should be.
+ * We use the following algorithm for the height:
+ * If baud rate < 1200, use 9
+ * If baud rate = 1200, use 14
+ * If baud rate > 1200, use 24 or ws_row
+ * Width is either 80 or ws_col;
+ */
+void
+setscreensize()
+{
+ struct sgttyb tbuf;
+ struct winsize ws;
+
+ if (ioctl(1, TIOCGWINSZ, (char *) &ws) < 0)
+ ws.ws_col = ws.ws_row = 0;
+ if (ioctl(1, TIOCGETP, &tbuf) < 0)
+ tbuf.sg_ospeed = B9600;
+ if (tbuf.sg_ospeed < B1200)
+ screenheight = 9;
+ else if (tbuf.sg_ospeed == B1200)
+ screenheight = 14;
+ else if (ws.ws_row != 0)
+ screenheight = ws.ws_row;
+ else
+ screenheight = 24;
+ if ((realscreenheight = ws.ws_row) == 0)
+ realscreenheight = 24;
+ if ((screenwidth = ws.ws_col) == 0)
+ screenwidth = 80;
+}
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