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- /*
- * M A I N . C
- *
- * EE/CIS Computer Lab
- * Department of Computer and Information Sciences
- * Department of Electrical Engineering
- * University of Delaware
- *
- * REVISION HISTORY:
- *
- * $Revision: 1.3 $
- *
- * $Log: main.c,v $
- * Revision 1.3 85/11/20 12:23:08 galvin
- * Added call to mmdf_init.
- *
- * Revision 1.2 85/11/18 15:29:35 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
- char *copyright =
- "@(#) Copyright (c) 1980 Regents of the University of California.\nAll rights reserved.\n";
- #endif not lint
-
- #ifndef lint
- static char *sccsid = "@(#)main.c 5.2 (Berkeley) 6/21/85";
- #endif not lint
-
- #include "./rcv.h"
- #include <sys/stat.h>
-
- /*
- * Mail -- a mail program
- *
- * Startup -- interface with user.
- */
-
- jmp_buf hdrjmp;
-
- /*
- * Find out who the user is, copy his mail file (if exists) into
- * /tmp/Rxxxxx and set up the message pointers. Then, print out the
- * message headers and read user commands.
- *
- * Command line syntax:
- * Mail [ -i ] [ -r address ] [ -h number ] [ -f [ name ] ]
- * or:
- * Mail [ -i ] [ -r address ] [ -h number ] people ...
- */
-
- main(argc, argv)
- char **argv;
- {
- register char *ef;
- register int i, argp;
- int mustsend, hdrstop(), (*prevint)(), f;
- struct sgttyb tbuf;
-
- /*
- * Set up the MMDF environment.
- */
-
- mmdf_init(argv[0]);
-
- #ifdef signal
- Siginit();
- #endif
-
- /*
- * Set up a reasonable environment. We clobber the last
- * element of argument list for compatibility with version 6,
- * figure out whether we are being run interactively, set up
- * all the temporary files, buffer standard output, and so forth.
- */
-
- argv[argc] = (char *) -1;
- #ifdef GETHOST
- inithost();
- #endif GETHOST
- mypid = getpid();
- intty = isatty(0);
- outtty = isatty(1);
- if (outtty) {
- gtty(1, &tbuf);
- baud = tbuf.sg_ospeed;
- }
- else
- baud = B9600;
- image = -1;
-
- /*
- * Now, determine how we are being used.
- * We successively pick off instances of -r, -h, -f, and -i.
- * If called as "rmail" we note this fact for letter sending.
- * 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;
- argp = -1;
- mustsend = 0;
- if (argc > 0 && **argv == 'r')
- rmail++;
- for (i = 1; i < argc; i++) {
-
- /*
- * If current argument is not a flag, then the
- * rest of the arguments must be recipients.
- */
-
- if (*argv[i] != '-') {
- argp = i;
- break;
- }
- switch (argv[i][1]) {
- case 'r':
- /*
- * Next argument is address to be sent along
- * to the mailer.
- */
- if (i >= argc - 1) {
- fprintf(stderr, "Address required after -r\n");
- exit(1);
- }
- mustsend++;
- rflag = argv[i+1];
- i++;
- break;
-
- case 'T':
- /*
- * Next argument is temp file to write which
- * articles have been read/deleted for netnews.
- */
- if (i >= argc - 1) {
- fprintf(stderr, "Name required after -T\n");
- exit(1);
- }
- Tflag = argv[i+1];
- if ((f = creat(Tflag, 0600)) < 0) {
- perror(Tflag);
- exit(1);
- }
- close(f);
- i++;
- break;
-
- case 'u':
- /*
- * Next argument is person to pretend to be.
- */
- if (i >= argc - 1) {
- fprintf(stderr, "Missing user name for -u\n");
- exit(1);
- }
- strcpy(myname, argv[i+1]);
- i++;
- break;
-
- case 'i':
- /*
- * User wants to ignore interrupts.
- * Set the variable "ignore"
- */
- assign("ignore", "");
- break;
-
- case 'd':
- debug++;
- break;
-
- case 'h':
- /*
- * Specified sequence number for network.
- * This is the number of "hops" made so
- * far (count of times message has been
- * forwarded) to help avoid infinite mail loops.
- */
- if (i >= argc - 1) {
- fprintf(stderr, "Number required for -h\n");
- exit(1);
- }
- mustsend++;
- hflag = atoi(argv[i+1]);
- if (hflag == 0) {
- fprintf(stderr, "-h needs non-zero number\n");
- exit(1);
- }
- i++;
- break;
-
- case 's':
- /*
- * Give a subject field for sending from
- * non terminal
- */
- if (i >= argc - 1) {
- fprintf(stderr, "Subject req'd for -s\n");
- exit(1);
- }
- mustsend++;
- sflag = argv[i+1];
- i++;
- 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 in his home directory.
- */
- if (i >= argc - 1)
- ef = mbox;
- else
- ef = argv[i + 1];
- i++;
- break;
-
- case 'n':
- /*
- * User doesn't want to source /usr/lib/Mail.rc
- */
- nosrc++;
- break;
-
- case 'N':
- /*
- * Avoid initial header printing.
- */
- noheader++;
- break;
-
- case 'v':
- /*
- * Send mailer verbose flag
- */
- assign("verbose", "");
- break;
-
- case 'I':
- /*
- * We're interactive
- */
- intty = 1;
- break;
-
- default:
- fprintf(stderr, "Unknown flag: %s\n", argv[i]);
- exit(1);
- }
- }
-
- /*
- * Check for inconsistent arguments.
- */
-
- if (ef != NOSTR && argp != -1) {
- fprintf(stderr, "Cannot give -f and people to send to.\n");
- exit(1);
- }
- if (mustsend && argp == -1) {
- fprintf(stderr, "The flags you gave make no sense since you're not sending mail.\n");
- exit(1);
- }
- tinit();
- input = stdin;
- rcvmode = argp == -1;
- if (!nosrc)
- load(MASTER);
- load(mailrc);
- if (argp != -1) {
- mail(&argv[argp]);
-
- /*
- * 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) {
- char *ename;
-
- edit++;
- ename = expand(ef);
- if (ename != ef) {
- ef = (char *) calloc((unsigned) 1,
- (unsigned) (strlen(ename) + 1));
- strcpy(ef, ename);
- }
- editfile = ef;
- strcpy(mailname, ef);
- }
- if (setfile(mailname, edit) < 0) {
- if (edit)
- perror(mailname);
- else
- fprintf(stderr, "No mail for %s\n", myname);
- exit(1);
- }
- if (!edit && !noheader && value("noheader") == NOSTR) {
- if (setjmp(hdrjmp) == 0) {
- if ((prevint = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
- sigset(SIGINT, hdrstop);
- announce(1);
- fflush(stdout);
- sigset(SIGINT, prevint);
- }
- }
- if (edit)
- newfileinfo();
- if (!edit && msgCount == 0) {
- printf("No mail\n");
- fflush(stdout);
- exit(0);
- }
- commands();
- if (!edit) {
- sigset(SIGHUP, SIG_IGN);
- sigset(SIGINT, SIG_IGN);
- sigset(SIGQUIT, SIG_IGN);
- quit();
- }
- exit(0);
- }
-
- /*
- * Interrupt printing of the headers.
- */
- hdrstop()
- {
-
- fflush(stdout);
- fprintf(stderr, "\nInterrupt\n");
- longjmp(hdrjmp, 1);
- }
-