home *** CD-ROM | disk | FTP | other *** search
- /*
- * C O L L E C T . C
- * EE/CIS Computer Lab
- * Department of Computer and Information Sciences
- * Department of Electrical Engineering
- * University of Delaware
- *
- * REVISION HISTORY:
- *
- * $Revision: 1.5 $
- *
- * $Log: collect.c,v $
- * Revision 1.5 86/01/14 14:22:45 galvin
- * Add extract() and detract() calls to parse the lines entered by the
- * user when attempting to add to the To, Cc and Bcc address lists.
- *
- * Fix addto() to insert commas between addresses.
- *
- * Revision 1.4 85/12/18 13:20:12 galvin
- * Add another argument to send to indicate whether or not this
- * message should be delimited by MMDF message delimiters.
- *
- * Revision 1.3 85/11/16 15:18:24 galvin
- * Added define for sigmask for backward compatibility from 4.3bsd to 4.2bsd.
- *
- * Revision 1.2 85/11/16 14:27:08 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 = "@(#)collect.c 5.2 (Berkeley) 6/21/85";
- #endif not lint
-
- /*
- * Mail -- a mail program
- *
- * Collect input from standard input, handling
- * ~ escapes.
- */
-
- #include "./rcv.h"
- #include <sys/stat.h>
- #include "./sigretro.h"
-
- /*
- * Read a message from standard output and return a read file to it
- * or NULL on error.
- */
-
- /*
- * The following hokiness with global variables is so that on
- * receipt of an interrupt signal, the partial message can be salted
- * away on dead.letter. The output file must be available to flush,
- * and the input to read. Several open files could be saved all through
- * Mail if stdio allowed simultaneous read/write access.
- */
-
- static int (*savesig)(); /* Previous SIGINT value */
- static int (*savehup)(); /* Previous SIGHUP value */
- # ifdef VMUNIX
- static int (*savecont)(); /* Previous SIGCONT value */
- # endif VMUNIX
- static FILE *newi; /* File for saving away */
- static FILE *newo; /* Output side of same */
- static int hf; /* Ignore interrups */
- static int hadintr; /* Have seen one SIGINT so far */
-
- static jmp_buf coljmp; /* To get back to work */
-
- FILE *
- collect(hp)
- struct header *hp;
- {
- FILE *ibuf, *fbuf, *obuf;
- int lc, cc, escape, collrub(), intack(), collcont(), eof;
- register int c, t;
- char linebuf[LINESIZE], *cp;
- extern char tempMail[];
- #ifndef V4_2BSD
- #ifndef V4_1BSD
- extern collintsig(), collhupsig();
- #endif V4_1BSD
- #endif V4_2BSD
- char getsub;
-
- noreset++;
- ibuf = obuf = NULL;
- if (value("ignore") != NOSTR)
- hf = 1;
- else
- hf = 0;
- hadintr = 0;
- # ifdef V4_2BSD
- if ((savesig = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
- sigset(SIGINT, hf ? intack : collrub), sigblock(sigmask(SIGINT)
- );
- if ((savehup = sigset(SIGHUP, SIG_IGN)) != SIG_IGN)
- sigset(SIGHUP, collrub), sigblock(sigmask(SIGHUP));
- savecont = sigset(SIGCONT, collcont);
- # else V4_2BSD
- # ifdef V4_1BSD
- if ((savesig = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
- sigset(SIGINT, hf ? intack : collrub), sighold(SIGINT);
- if ((savesig = sigset(SIGHUP, SIG_IGN)) != SIG_IGN)
- sigset(SIGHUP, hf ? intack : collrub), sighold(SIGHUP);
- savecont = sigset(SIGCONT, collcont);
- # else
- savesig = signal(SIGINT, SIG_IGN);
- savehup = signal(SIGHUP, SIG_IGN);
- # endif V4_1BSD
- # endif V4_2BSD
- newi = NULL;
- newo = NULL;
- if ((obuf = fopen(tempMail, "w")) == NULL) {
- perror(tempMail);
- goto err;
- }
- newo = obuf;
- if ((ibuf = fopen(tempMail, "r")) == NULL) {
- perror(tempMail);
- newo = NULL;
- fclose(obuf);
- goto err;
- }
- newi = ibuf;
- remove(tempMail);
-
- /*
- * If we are going to prompt for a subject,
- * refrain from printing a newline after
- * the headers (since some people mind).
- */
-
- t = GTO|GSUBJECT|GCC|GNL;
- getsub = 0;
- if (intty && sflag == NOSTR && hp->h_subject == NOSTR && value("ask"))
- t &= ~GNL, getsub++;
- if (hp->h_seq != 0) {
- puthead(hp, stdout, t);
- fflush(stdout);
- }
- escape = ESCAPE;
- if ((cp = value("escape")) != NOSTR)
- escape = *cp;
- eof = 0;
- for (;;) {
- # ifdef V4_2BSD
- int omask = sigblock(0) &~ (sigmask(SIGINT)|sigmask(SIGHUP));
- # endif V4_2BSD
-
- setjmp(coljmp);
- # ifdef V4_2BSD
- sigsetmask(omask);
- # else V4_2BSD
- # ifdef V4_1BSD
- if (savesig != SIG_IGN)
- sigrelse(SIGINT);
- if (savehup != SIG_IGN)
- sigrelse(SIGHUP);
- # else V4_1BSD
- if (savesig != SIG_IGN)
- signal(SIGINT, hf ? intack : collintsig);
- if (savehup != SIG_IGN)
- signal(SIGHUP, collhupsig);
- # endif V4_1BSD
- # endif V4_2BSD
- fflush(stdout);
- if (getsub) {
- grabh(hp, GSUBJECT);
- getsub = 0;
- continue;
- }
- if (readline(stdin, linebuf) <= 0) {
- if (intty && value("ignoreeof") != NOSTR) {
- if (++eof > 35)
- break;
- printf("Use \".\" to terminate letter\n",
- escape);
- continue;
- }
- break;
- }
- eof = 0;
- hadintr = 0;
- if (intty && equal(".", linebuf) &&
- (value("dot") != NOSTR || value("ignoreeof") != NOSTR))
- break;
- if (linebuf[0] != escape || rflag != NOSTR) {
- if ((t = putline(obuf, linebuf)) < 0)
- goto err;
- continue;
- }
- c = linebuf[1];
- switch (c) {
- default:
- /*
- * On double escape, just send the single one.
- * Otherwise, it's an error.
- */
-
- if (c == escape) {
- if (putline(obuf, &linebuf[1]) < 0)
- goto err;
- else
- break;
- }
- printf("Unknown tilde escape.\n");
- break;
-
- case 'C':
- /*
- * Dump core.
- */
-
- core();
- break;
-
- case '!':
- /*
- * Shell escape, send the balance of the
- * line to sh -c.
- */
-
- shell(&linebuf[2]);
- break;
-
- case ':':
- case '_':
- /*
- * Escape to command mode, but be nice!
- */
-
- execute(&linebuf[2], 1);
- printf("(continue)\n");
- break;
-
- case '.':
- /*
- * Simulate end of file on input.
- */
- goto eofl;
-
- case 'q':
- case 'Q':
- /*
- * Force a quit of sending mail.
- * Act like an interrupt happened.
- */
-
- hadintr++;
- collrub(SIGINT);
- exit(1);
-
- case 'h':
- /*
- * Grab a bunch of headers.
- */
- if (!intty || !outtty) {
- printf("~h: no can do!?\n");
- break;
- }
- grabh(hp, GTO|GSUBJECT|GCC|GBCC);
- printf("(continue)\n");
- break;
-
- case 't':
- /*
- * Add to the To list.
- */
-
- hp->h_to = addto(hp->h_to,
- detract(elide(extract(&linebuf[2], GTO)),
- GTO));
- hp->h_seq++;
- break;
-
- case 's':
- /*
- * Set the Subject list.
- */
-
- cp = &linebuf[2];
- while (any(*cp, " \t"))
- cp++;
- hp->h_subject = savestr(cp);
- hp->h_seq++;
- break;
-
- case 'c':
- /*
- * Add to the CC list.
- */
-
- hp->h_cc = addto(hp->h_cc,
- detract(elide(extract(&linebuf[2], GCC)),
- GCC));
- hp->h_seq++;
- break;
-
- case 'b':
- /*
- * Add stuff to blind carbon copies list.
- */
- hp->h_bcc = addto(hp->h_bcc,
- detract(elide(extract(&linebuf[2],
- GBCC)),GBCC));
- hp->h_seq++;
- break;
-
- case 'd':
- copy(deadlettername, &linebuf[2]);
- /* fall into . . . */
-
- case 'r':
- /*
- * Invoke a file:
- * Search for the file name,
- * then open it and copy the contents to obuf.
- */
-
- cp = &linebuf[2];
- while (any(*cp, " \t"))
- cp++;
- if (*cp == '\0') {
- printf("Interpolate what file?\n");
- break;
- }
- cp = expand(cp);
- if (cp == NOSTR)
- break;
- if (isdir(cp)) {
- printf("%s: directory\n");
- break;
- }
- if ((fbuf = fopen(cp, "r")) == NULL) {
- perror(cp);
- break;
- }
- printf("\"%s\" ", cp);
- fflush(stdout);
- lc = 0;
- cc = 0;
- while (readline(fbuf, linebuf) > 0) {
- lc++;
- if ((t = putline(obuf, linebuf)) < 0) {
- fclose(fbuf);
- goto err;
- }
- cc += t;
- }
- fclose(fbuf);
- printf("%d/%d\n", lc, cc);
- break;
-
- case 'w':
- /*
- * Write the message on a file.
- */
-
- cp = &linebuf[2];
- while (any(*cp, " \t"))
- cp++;
- if (*cp == '\0') {
- fprintf(stderr, "Write what file!?\n");
- break;
- }
- if ((cp = expand(cp)) == NOSTR)
- break;
- fflush(obuf);
- rewind(ibuf);
- exwrite(cp, ibuf, 1);
- break;
-
- case 'm':
- case 'f':
- /*
- * Interpolate the named messages, if we
- * are in receiving mail mode. Does the
- * standard list processing garbage.
- * If ~f is given, we don't shift over.
- */
-
- if (!rcvmode) {
- printf("No messages to send from!?!\n");
- break;
- }
- cp = &linebuf[2];
- while (any(*cp, " \t"))
- cp++;
- if (forward(cp, obuf, c) < 0)
- goto err;
- printf("(continue)\n");
- break;
-
- case '?':
- if ((fbuf = fopen(THELPFILE, "r")) == NULL) {
- perror(THELPFILE);
- break;
- }
- t = getc(fbuf);
- while (t != -1) {
- putchar(t);
- t = getc(fbuf);
- }
- fclose(fbuf);
- break;
-
- case 'p':
- /*
- * Print out the current state of the
- * message without altering anything.
- */
-
- fflush(obuf);
- rewind(ibuf);
- printf("-------\nMessage contains:\n");
- puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
- t = getc(ibuf);
- while (t != EOF) {
- putchar(t);
- t = getc(ibuf);
- }
- printf("(continue)\n");
- break;
-
- case '^':
- case '|':
- /*
- * Pipe message through command.
- * Collect output as new message.
- */
-
- obuf = mespipe(ibuf, obuf, &linebuf[2]);
- newo = obuf;
- ibuf = newi;
- newi = ibuf;
- printf("(continue)\n");
- break;
-
- case 'v':
- case 'e':
- /*
- * Edit the current message.
- * 'e' means to use EDITOR
- * 'v' means to use VISUAL
- */
-
- if ((obuf = mesedit(ibuf, obuf, c)) == NULL)
- goto err;
- newo = obuf;
- ibuf = newi;
- printf("(continue)\n");
- break;
- }
- }
- eofl:
- fclose(obuf);
- rewind(ibuf);
- sigset(SIGINT, savesig);
- sigset(SIGHUP, savehup);
- # ifdef VMUNIX
- sigset(SIGCONT, savecont);
- # ifdef V4_2BSD
- sigsetmask(0);
- # endif V4_2BSD
- # endif VMUNIX
- noreset = 0;
- return(ibuf);
-
- err:
- if (ibuf != NULL)
- fclose(ibuf);
- if (obuf != NULL)
- fclose(obuf);
- sigset(SIGINT, savesig);
- sigset(SIGHUP, savehup);
- # ifdef VMUNIX
- sigset(SIGCONT, savecont);
- # ifdef V4_2BSD
- sigsetmask(0);
- # endif V4_2BSD
- # endif VMUNIX
- noreset = 0;
- return(NULL);
- }
-
- #ifdef NOT_USED
- /*
- * Non destructively interrogate the value of the given signal.
- */
-
- psig(n)
- {
- register (*wassig)();
-
- wassig = sigset(n, SIG_IGN);
- sigset(n, wassig);
- return((int) wassig);
- }
- #endif NOT_USED
-
- /*
- * Write a file, ex-like if f set.
- */
-
- exwrite(name, ibuf, f)
- char name[];
- FILE *ibuf;
- {
- register FILE *of;
- register int c;
- long cc;
- int lc;
- struct stat junk;
-
- if (f) {
- printf("\"%s\" ", name);
- fflush(stdout);
- }
- if (stat(name, &junk) >= 0 && (junk.st_mode & S_IFMT) == S_IFREG) {
- if (!f)
- fprintf(stderr, "%s: ", name);
- fprintf(stderr, "File exists\n", name);
- return;
- }
- if ((of = fopen(name, "w")) == NULL) {
- perror(NOSTR);
- return;
- }
- lc = 0;
- cc = 0;
- while ((c = getc(ibuf)) != EOF) {
- cc++;
- if (c == '\n')
- lc++;
- putc(c, of);
- if (ferror(of)) {
- perror(name);
- fclose(of);
- return;
- }
- }
- fclose(of);
- printf("%d/%ld\n", lc, cc);
- fflush(stdout);
- }
-
- /*
- * Edit the message being collected on ibuf and obuf.
- * Write the message out onto some poorly-named temp file
- * and point an editor at it.
- *
- * On return, make the edit file the new temp file.
- */
-
- FILE *
- mesedit(ibuf, obuf, c)
- FILE *ibuf, *obuf;
- {
- int pid, s;
- FILE *fbuf;
- register int t;
- int (*sig)(), (*scont)(), signull();
- struct stat sbuf;
- extern char tempMail[], tempEdit[];
- register char *ed;
-
- sig = sigset(SIGINT, SIG_IGN);
- # ifdef VMUNIX
- scont = sigset(SIGCONT, signull);
- # endif VMUNIX
- if (stat(tempEdit, &sbuf) >= 0) {
- printf("%s: file exists\n", tempEdit);
- goto out;
- }
- close(creat(tempEdit, 0600));
- if ((fbuf = fopen(tempEdit, "w")) == NULL) {
- perror(tempEdit);
- goto out;
- }
- fflush(obuf);
- rewind(ibuf);
- t = getc(ibuf);
- while (t != EOF) {
- putc(t, fbuf);
- t = getc(ibuf);
- }
- fflush(fbuf);
- if (ferror(fbuf)) {
- perror(tempEdit);
- remove(tempEdit);
- goto fix;
- }
- fclose(fbuf);
- if ((ed = value(c == 'e' ? "EDITOR" : "VISUAL")) == NOSTR)
- ed = c == 'e' ? EDITOR : VISUAL;
- pid = vfork();
- if (pid == 0) {
- sigchild();
- if (sig != SIG_IGN)
- sigsys(SIGINT, SIG_DFL);
- execl(ed, ed, tempEdit, 0);
- perror(ed);
- _exit(1);
- }
- if (pid == -1) {
- perror("fork");
- remove(tempEdit);
- goto out;
- }
- while (wait(&s) != pid)
- ;
- if ((s & 0377) != 0) {
- printf("Fatal error in \"%s\"\n", ed);
- remove(tempEdit);
- goto out;
- }
-
- /*
- * Now switch to new file.
- */
-
- if ((fbuf = fopen(tempEdit, "a")) == NULL) {
- perror(tempEdit);
- remove(tempEdit);
- goto out;
- }
- if ((ibuf = fopen(tempEdit, "r")) == NULL) {
- perror(tempEdit);
- fclose(fbuf);
- remove(tempEdit);
- goto out;
- }
- remove(tempEdit);
- fclose(obuf);
- fclose(newi);
- obuf = fbuf;
- goto out;
- fix:
- perror(tempEdit);
- out:
- # ifdef VMUNIX
- sigset(SIGCONT, scont);
- # endif VMUNIX
- sigset(SIGINT, sig);
- newi = ibuf;
- return(obuf);
- }
-
- /*
- * Pipe the message through the command.
- * Old message is on stdin of command;
- * New message collected from stdout.
- * Sh -c must return 0 to accept the new message.
- */
-
- FILE *
- mespipe(ibuf, obuf, cmd)
- FILE *ibuf, *obuf;
- char cmd[];
- {
- register FILE *ni, *no;
- int pid, s;
- int (*savsig)();
- char *Shell;
-
- newi = ibuf;
- if ((no = fopen(tempEdit, "w")) == NULL) {
- perror(tempEdit);
- return(obuf);
- }
- if ((ni = fopen(tempEdit, "r")) == NULL) {
- perror(tempEdit);
- fclose(no);
- remove(tempEdit);
- return(obuf);
- }
- remove(tempEdit);
- savsig = sigset(SIGINT, SIG_IGN);
- fflush(obuf);
- rewind(ibuf);
- if ((Shell = value("SHELL")) == NULL)
- Shell = "/bin/sh";
- if ((pid = vfork()) == -1) {
- perror("fork");
- goto err;
- }
- if (pid == 0) {
- /*
- * stdin = current message.
- * stdout = new message.
- */
-
- sigchild();
- close(0);
- dup(fileno(ibuf));
- close(1);
- dup(fileno(no));
- for (s = 4; s < 15; s++)
- close(s);
- execl(Shell, Shell, "-c", cmd, 0);
- perror(Shell);
- _exit(1);
- }
- while (wait(&s) != pid)
- ;
- if (s != 0 || pid == -1) {
- fprintf(stderr, "\"%s\" failed!?\n", cmd);
- goto err;
- }
- if (fsize(ni) == 0) {
- fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
- goto err;
- }
-
- /*
- * Take new files.
- */
-
- newi = ni;
- fclose(ibuf);
- fclose(obuf);
- sigset(SIGINT, savsig);
- return(no);
-
- err:
- fclose(no);
- fclose(ni);
- sigset(SIGINT, savsig);
- return(obuf);
- }
-
- /*
- * Interpolate the named messages into the current
- * message, preceding each line with a tab.
- * Return a count of the number of characters now in
- * the message, or -1 if an error is encountered writing
- * the message temporary. The flag argument is 'm' if we
- * should shift over and 'f' if not.
- */
- forward(ms, obuf, f)
- char ms[];
- FILE *obuf;
- {
- register int *msgvec, *ip;
- extern char tempMail[];
-
- msgvec = (int *) salloc((msgCount+1) * sizeof *msgvec);
- if (msgvec == (int *) NOSTR)
- return(0);
- if (getmsglist(ms, msgvec, 0) < 0)
- return(0);
- if (*msgvec == NULL) {
- *msgvec = first(0, MMNORM);
- if (*msgvec == NULL) {
- printf("No appropriate messages\n");
- return(0);
- }
- msgvec[1] = NULL;
- }
- printf("Interpolating:");
- for (ip = msgvec; *ip != NULL; ip++) {
- touch(*ip);
- printf(" %d", *ip);
- if (f == 'm') {
- if (transmit(&message[*ip-1], obuf) < 0L) {
- perror(tempMail);
- return(-1);
- }
- } else
- if (send(&message[*ip-1], obuf, 0, 0) < 0) {
- perror(tempMail);
- return(-1);
- }
- }
- printf("\n");
- return(0);
- }
-
- /*
- * Send message described by the passed pointer to the
- * passed output buffer. Insert a tab in front of each
- * line. Return a count of the characters sent, or -1
- * on error.
- */
-
- long
- transmit(mailp, obuf)
- struct message *mailp;
- FILE *obuf;
- {
- register struct message *mp;
- register int ch;
- long c, n;
- int bol;
- FILE *ibuf;
-
- mp = mailp;
- ibuf = setinput(mp);
- c = mp->m_size;
- n = c;
- bol = 1;
- while (c-- > 0L) {
- if (bol) {
- bol = 0;
- putc('\t', obuf);
- n++;
- if (ferror(obuf)) {
- perror("/tmp");
- return(-1L);
- }
- }
- ch = getc(ibuf);
- if (ch == '\n')
- bol++;
- putc(ch, obuf);
- if (ferror(obuf)) {
- perror("/tmp");
- return(-1L);
- }
- }
- return(n);
- }
-
- /*
- * Print (continue) when continued after ^Z.
- */
- collcont()
- {
-
- printf("(continue)\n");
- fflush(stdout);
- }
-
- /*
- * On interrupt, go here to save the partial
- * message on ~/dead.letter.
- * Then restore signals and execute the normal
- * signal routine. We only come here if signals
- * were previously set anyway.
- */
-
- # ifndef VMUNIX
- collintsig()
- {
- signal(SIGINT, SIG_IGN);
- collrub(SIGINT);
- }
-
- collhupsig()
- {
- signal(SIGHUP, SIG_IGN);
- collrub(SIGHUP);
- }
- # endif VMUNIX
-
- collrub(s)
- {
- register FILE *dbuf;
- register int c;
-
- if (s == SIGINT && hadintr == 0) {
- hadintr++;
- fflush(stdout);
- fprintf(stderr, "\n(Interrupt -- one more to kill letter)\n");
- longjmp(coljmp, 1);
- }
- fclose(newo);
- rewind(newi);
- if (s == SIGINT && value("nosave") != NOSTR || fsize(newi) == 0)
- goto done;
- if ((dbuf = fopen(deadlettername, "w")) == NULL)
- goto done;
- chmod(deadlettername, 0600);
- while ((c = getc(newi)) != EOF)
- putc(c, dbuf);
- fclose(dbuf);
-
- done:
- fclose(newi);
- sigset(SIGINT, savesig);
- sigset(SIGHUP, savehup);
- # ifdef VMUNIX
- sigset(SIGCONT, savecont);
- # endif VMUNIX
- if (rcvmode) {
- if (s == SIGHUP)
- hangup();
- else
- #ifndef VMUNIX
- stop(s);
- #else VMUNIX
- stop();
- #endif VMUNIX
- }
- else
- exit(1);
- }
-
- /*
- * Acknowledge an interrupt signal from the tty by typing an @
- */
-
- intack()
- {
-
- puts("@");
- fflush(stdout);
- clearerr(stdin);
- }
-
- /*
- * Add a string to the end of a header entry field.
- */
-
- char *
- addto(hfld, news)
- char hfld[], news[];
- {
- register char *cp, *cp2, *linebuf;
- register int comma;
-
- if (hfld == NOSTR)
- hfld = "";
- if (*news == '\0')
- return(hfld);
- linebuf = salloc(strlen(hfld) + strlen(news) + 3); /* maybe comma */
- for (cp = hfld; any(*cp, " \t"); cp++)
- ;
- comma = *cp ? 1 : 0;
- for (cp2 = linebuf; *cp;)
- *cp2++ = *cp++;
- if (comma)
- *cp2++ = ','; /* here's the comma */
- *cp2++ = ' ';
- for (cp = news; any(*cp, " \t"); cp++)
- ;
- while (*cp != '\0')
- *cp2++ = *cp++;
- *cp2 = '\0';
- return(linebuf);
- }
-