/* * 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 = "@(#)main.c 5.3 (Berkeley) 9/15/85"; #endif /* !lint */ #include "glob.h" #include /* * Mail -- a mail program * * Startup -- interface with user. */ jmp_buf hdrjmp; /* * Find out who the user is, copy his mail file (if exists) into * temp file 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; char ef2[PATHSIZE], wsize[8]; int fopt; #if defined(SVR3) || defined(_SVR4_SOURCE) int mustsend, uflag, f; void (*prevint)(), hdrstop(); #else int mustsend, uflag, hdrstop(), (*prevint)(), f; #endif FILE *ibuf, *ftat; #ifndef USG struct sgttyb tbuf; #else struct termio tbuf; #endif savedegid = getegid(); setgid(getgid()); #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. */ uflag = 0; argv[argc] = (char *) -1; mypid = getpid(); intty = isatty(0); outtty = isatty(1); if (outtty) { #ifndef USG gtty(1, &tbuf); baud = tbuf.sg_ospeed; #else ioctl(1, TCGETA, &tbuf); baud = tbuf.c_cflag & CBAUD; #endif } 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; fopt = 0; mustsend = 0; readonly = NOT_READONLY; 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 'R': /* * Force read-only mode. */ readonly = NO_ACCESS; 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. */ uflag++; if (i >= argc - 1) { fprintf(stderr, "Missing user name for -u\n"); exit(1); } strncpy(myname, argv[i+1], sizeof(myname)-1); i++; if (value("MAIL") != NOSTR) assign("MAIL", ""); 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 'l': /* * Ignore locks. */ nolock++; /* Fall through... */ 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 { fopt++; 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); } input = stdin; rcvmode = argp == -1; tinit(); 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++; ef = expand(ef); if (ef == NOSTR) exit(1); if (fopt && ((*ef == '.') || (*ef != '/'))) { if (getwd(ef2) == 0) { perror(ef2); exit(1); } if(strlen(ef2) < (PATHSIZE - 1)) snprintf(ef2 + strlen(ef2), PATHSIZE - strlen(ef2) - 1, "/%s", ef); ef = ef2; } editfile = ef; strncpy(mailname, ef, PATHSIZE); mailname[PATHSIZE - 1] = '\0'; } if (setfile(mailname, edit, readonly) < 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 = sigset(SIGINT, SIG_IGN)) != SIG_IGN) sigset(SIGINT, hdrstop); announce(!0); fflush(stdout); sigset(SIGINT, prevint); } } if (!edit && msgCount == 0) { printf("No mail\n"); fflush(stdout); exit(0); } sigset(SIGQUIT, SIG_IGN); commands(); if (!edit) { sigset(SIGHUP, SIG_IGN); sigset(SIGINT, SIG_IGN); quit(); } rounlock(); exit(0); } /* * Interrupt printing of the headers. */ void hdrstop() { fflush(stdout); fprintf(stderr, "\nInterrupt\n"); longjmp(hdrjmp, 1); }