/* * Copyright (c) 1980 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of California at Berkeley. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. */ #ifdef notdef char copyright[] = "@(#) Copyright (c) 1980 Regents of the University of California.\n\ All rights reserved.\n"; #endif /* notdef */ #ifdef notdef static char sccsid[] = "@(#)main.c 5.5 (Berkeley) 2/18/88"; #endif /* notdef */ #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 a reasonable environment. * Figure out whether we are being run interactively, set up * all the temporary files, buffer standard output, and so forth. */ #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(); setscreensize(); 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 = malloc((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 (!noheader && value("noheader") == NOSTR) { if (setjmp(hdrjmp) == 0) { if ((prevint = signal(SIGINT, SIG_IGN)) != SIG_IGN) signal(SIGINT, hdrstop); announce(!0); fflush(stdout); signal(SIGINT, prevint); } } if (!edit && msgCount == 0) { printf("No mail\n"); fflush(stdout); exit(0); } commands(); if (!edit) { signal(SIGHUP, SIG_IGN); signal(SIGINT, SIG_IGN); signal(SIGQUIT, SIG_IGN); quit(); } exit(0); } /* * Interrupt printing of the headers. */ hdrstop() { fflush(stdout); fprintf(stderr, "\nInterrupt\n"); longjmp(hdrjmp, 1); } /* * Compute what the screen size 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; */ setscreensize() { #ifdef TIOCGWINSZ struct winsize ws; if (ioctl(fileno(stdout), TIOCGWINSZ, (char *) &ws) < 0) ws.ws_col = ws.ws_row = 0; #endif if (baud < B1200) screenheight = 9; else if (baud == B1200) screenheight = 14; #ifdef TIOCGWINSZ else if (ws.ws_row != 0) screenheight = ws.ws_row; #endif else screenheight = 24; #ifdef TIOCGWINSZ if (ws.ws_col != 0) screenwidth = ws.ws_col; else #endif screenwidth = 80; }