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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, 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'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)collect.c 5.17 (Berkeley) 1/16/89";
- #endif /* not lint */
-
- /*
- * Mail -- a mail program
- *
- * Collect input from standard input, handling
- * ~ escapes.
- */
-
- #include "rcv.h"
- #include <sys/stat.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.
- */
-
- static int (*saveint)(); /* Previous SIGINT value */
- static int (*savehup)(); /* Previous SIGHUP value */
- static int (*savetstp)(); /* Previous SIGTSTP value */
- static int (*savettou)(); /* Previous SIGTTOU value */
- static int (*savettin)(); /* Previous SIGTTIN value */
- static FILE *collf; /* File for saving away */
- static int hadintr; /* Have seen one SIGINT so far */
-
- static jmp_buf colljmp; /* To get back to work */
- static int colljmp_p; /* whether to long jump */
- static jmp_buf collabort; /* To end collection with error */
-
- FILE *
- collect(hp, printheaders)
- struct header *hp;
- {
- FILE *fbuf;
- int lc, cc, escape, eofcount;
- int collint(), collhup(), collstop();
- register int c, t;
- char linebuf[LINESIZE], *cp;
- extern char tempMail[];
- char getsub;
- int omask;
-
- collf = NULL;
- /*
- * Start catching signals from here, but we're still die on interrupts
- * until we're in the main loop.
- */
- omask = sigblock(sigmask(SIGINT) | sigmask(SIGHUP));
- if ((saveint = signal(SIGINT, SIG_IGN)) != SIG_IGN)
- signal(SIGINT, collint);
- if ((savehup = signal(SIGHUP, SIG_IGN)) != SIG_IGN)
- signal(SIGHUP, collhup);
- savetstp = signal(SIGTSTP, collstop);
- savettou = signal(SIGTTOU, collstop);
- savettin = signal(SIGTTIN, collstop);
- if (setjmp(collabort) || setjmp(colljmp)) {
- remove(tempMail);
- goto err;
- }
- sigsetmask(omask & ~(sigmask(SIGINT) | sigmask(SIGHUP)));
-
- noreset++;
- if ((collf = fopen(tempMail, "w+")) == NULL) {
- perror(tempMail);
- goto err;
- }
- unlink(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 (hp->h_subject == NOSTR && value("interactive") != NOSTR &&
- (value("ask") != NOSTR || value("asksub") != NOSTR))
- t &= ~GNL, getsub++;
- if (printheaders) {
- puthead(hp, stdout, t);
- fflush(stdout);
- }
- if ((cp = value("escape")) != NOSTR)
- escape = *cp;
- else
- escape = ESCAPE;
- eofcount = 0;
- hadintr = 0;
-
- if (!setjmp(colljmp)) {
- if (getsub)
- grabh(hp, GSUBJECT);
- } else {
- /*
- * Come here for printing the after-signal message.
- * Duplicate messages won't be printed because
- * the write is aborted if we get a SIGTTOU.
- */
- cont:
- if (hadintr) {
- fflush(stdout);
- fprintf(stderr,
- "\n(Interrupt -- one more to kill letter)\n");
- } else {
- printf("(continue)\n");
- fflush(stdout);
- }
- }
- for (;;) {
- colljmp_p = 1;
- c = readline(stdin, linebuf, LINESIZE);
- colljmp_p = 0;
- if (c < 0) {
- if (value("interactive") != NOSTR &&
- value("ignoreeof") != NOSTR && ++eofcount < 25) {
- printf("Use \".\" to terminate letter\n");
- continue;
- }
- break;
- }
- eofcount = 0;
- hadintr = 0;
- if (linebuf[0] == '.' && linebuf[1] == '\0' &&
- value("interactive") != NOSTR &&
- (value("dot") != NOSTR || value("ignoreeof") != NOSTR))
- break;
- if (linebuf[0] != escape || value("interactive") == NOSTR) {
- if (putline(collf, 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(collf, &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 ':':
- /*
- * Escape to command mode, but be nice!
- */
- execute(&linebuf[2], 1);
- goto cont;
- case '.':
- /*
- * Simulate end of file on input.
- */
- goto out;
- case 'q':
- /*
- * Force a quit of sending mail.
- * Act like an interrupt happened.
- */
- hadintr++;
- collint(SIGINT);
- exit(1);
- case 'h':
- /*
- * Grab a bunch of headers.
- */
- grabh(hp, GTO|GSUBJECT|GCC|GBCC);
- goto cont;
- case 't':
- /*
- * Add to the To list.
- */
- hp->h_to = cat(hp->h_to, extract(&linebuf[2], GTO));
- break;
- case 's':
- /*
- * Set the Subject list.
- */
- cp = &linebuf[2];
- while (isspace(*cp))
- cp++;
- hp->h_subject = savestr(cp);
- break;
- case 'c':
- /*
- * Add to the CC list.
- */
- hp->h_cc = cat(hp->h_cc, extract(&linebuf[2], GCC));
- break;
- case 'b':
- /*
- * Add stuff to blind carbon copies list.
- */
- hp->h_bcc = cat(hp->h_bcc, extract(&linebuf[2], GBCC));
- break;
- case 'd':
- strcpy(linebuf + 2, getdeadletter());
- /* fall into . . . */
- case 'r':
- /*
- * Invoke a file:
- * Search for the file name,
- * then open it and copy the contents to collf.
- */
- cp = &linebuf[2];
- while (isspace(*cp))
- cp++;
- if (*cp == '\0') {
- printf("Interpolate what file?\n");
- break;
- }
- cp = expand(cp);
- if (cp == NOSTR)
- break;
- if (isdir(cp)) {
- printf("%s: Directory\n", cp);
- break;
- }
- if ((fbuf = fopen(cp, "r")) == NULL) {
- perror(cp);
- break;
- }
- printf("\"%s\" ", cp);
- fflush(stdout);
- lc = 0;
- cc = 0;
- while (readline(fbuf, linebuf, LINESIZE) >= 0) {
- lc++;
- if ((t = putline(collf, 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 (*cp == ' ' || *cp == '\t')
- cp++;
- if (*cp == '\0') {
- fprintf(stderr, "Write what file!?\n");
- break;
- }
- if ((cp = expand(cp)) == NOSTR)
- break;
- rewind(collf);
- exwrite(cp, collf, 1);
- break;
- case 'm':
- case 'M':
- case 'f':
- 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 (forward(linebuf + 2, collf, c) < 0)
- goto err;
- goto cont;
- case '?':
- if ((fbuf = fopen(THELPFILE, "r")) == NULL) {
- perror(THELPFILE);
- break;
- }
- while ((t = getc(fbuf)) != EOF)
- (void) putchar(t);
- fclose(fbuf);
- break;
- case 'p':
- /*
- * Print out the current state of the
- * message without altering anything.
- */
- rewind(collf);
- printf("-------\nMessage contains:\n");
- puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
- while ((t = getc(collf)) != EOF)
- (void) putchar(t);
- goto cont;
- case '|':
- /*
- * Pipe message through command.
- * Collect output as new message.
- */
- rewind(collf);
- mespipe(collf, &linebuf[2]);
- goto cont;
- case 'v':
- case 'e':
- /*
- * Edit the current message.
- * 'e' means to use EDITOR
- * 'v' means to use VISUAL
- */
- rewind(collf);
- mesedit(collf, c);
- goto cont;
- }
- }
- goto out;
- err:
- if (collf != NULL) {
- fclose(collf);
- collf = NULL;
- }
- out:
- if (collf != NULL)
- rewind(collf);
- noreset--;
- sigblock(sigmask(SIGINT) | sigmask(SIGHUP));
- signal(SIGINT, saveint);
- signal(SIGHUP, savehup);
- signal(SIGTSTP, savetstp);
- signal(SIGTTOU, savettou);
- signal(SIGTTIN, savettin);
- sigsetmask(omask);
- return collf;
- }
-
- /*
- * Write a file, ex-like if f set.
- */
-
- exwrite(name, fp, f)
- char name[];
- FILE *fp;
- {
- 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");
- return(-1);
- }
- if ((of = fopen(name, "w")) == NULL) {
- perror(NOSTR);
- return(-1);
- }
- lc = 0;
- cc = 0;
- while ((c = getc(fp)) != EOF) {
- cc++;
- if (c == '\n')
- lc++;
- (void) putc(c, of);
- if (ferror(of)) {
- perror(name);
- fclose(of);
- return(-1);
- }
- }
- fclose(of);
- printf("%d/%ld\n", lc, cc);
- fflush(stdout);
- return(0);
- }
-
- /*
- * Edit the message being collected on fp.
- * On return, make the edit file the new temp file.
- */
- mesedit(fp, c)
- FILE *fp;
- {
- int (*sigint)() = signal(SIGINT, SIG_IGN);
- FILE *nf = run_editor(fp, (off_t)-1, c, 0);
-
- if (nf != NULL) {
- fseek(nf, (off_t)0, 2);
- collf = nf;
- fclose(fp);
- }
- (void) signal(SIGINT, sigint);
- }
-
- /*
- * 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.
- */
- mespipe(fp, cmd)
- FILE *fp;
- char cmd[];
- {
- FILE *nf;
- int (*sigint)() = signal(SIGINT, SIG_IGN);
- extern char tempEdit[];
-
- if ((nf = fopen(tempEdit, "w+")) == NULL) {
- perror(tempEdit);
- goto out;
- }
- (void) unlink(tempEdit);
- /*
- * stdin = current message.
- * stdout = new message.
- */
- if (run_command(cmd, 0, fileno(fp), fileno(nf), NOSTR) < 0) {
- (void) fclose(nf);
- goto out;
- }
- if (fsize(nf) == 0) {
- fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
- (void) fclose(nf);
- goto out;
- }
- /*
- * Take new files.
- */
- (void) fseek(nf, 0L, 2);
- collf = nf;
- (void) fclose(fp);
- out:
- (void) signal(SIGINT, sigint);
- }
-
- /*
- * 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, fp, f)
- char ms[];
- FILE *fp;
- {
- register int *msgvec;
- extern char tempMail[];
- struct ignoretab *ig;
- char *tabst;
-
- msgvec = (int *) salloc((msgCount+1) * sizeof *msgvec);
- if (msgvec == (int *) NOSTR)
- return(0);
- if (getmsglist(ms, msgvec, 0) < 0)
- return(0);
- if (*msgvec == 0) {
- *msgvec = first(0, MMNORM);
- if (*msgvec == NULL) {
- printf("No appropriate messages\n");
- return(0);
- }
- msgvec[1] = NULL;
- }
- if (f == 'f' || f == 'F')
- tabst = NOSTR;
- else if ((tabst = value("tabstr")) == NOSTR)
- tabst = "\t";
- ig = isupper(f) ? NULL : ignore;
- printf("Interpolating:");
- for (; *msgvec != 0; msgvec++) {
- struct message *mp = message + *msgvec - 1;
-
- touch(mp);
- printf(" %d", *msgvec);
- if (send(mp, fp, ig, tabst) < 0) {
- perror(tempMail);
- return(-1);
- }
- }
- printf("\n");
- return(0);
- }
-
- /*
- * Print (continue) when continued after ^Z.
- */
- /*ARGSUSED*/
- collstop(s)
- {
- int (*old_action)() = signal(s, SIG_DFL);
-
- sigsetmask(sigblock(0) & ~sigmask(s));
- kill(0, s);
- sigblock(sigmask(s));
- signal(s, old_action);
- if (colljmp_p) {
- colljmp_p = 0;
- hadintr = 0;
- longjmp(colljmp, 1);
- }
- }
-
- /*
- * On interrupt, come here to save the partial message in ~/dead.letter.
- * Then jump out of the collection loop.
- */
- /*ARGSUSED*/
- collint(s)
- {
- /*
- * the control flow is subtle, because we can be called from ~q.
- */
- if (!hadintr) {
- if (value("ignore") != NOSTR) {
- puts("@");
- fflush(stdout);
- clearerr(stdin);
- return;
- }
- hadintr = 1;
- longjmp(colljmp, 1);
- }
- rewind(collf);
- if (value("nosave") == NOSTR)
- savedeadletter(collf);
- longjmp(collabort, 1);
- }
-
- /*ARGSUSED*/
- collhup(s)
- {
- rewind(collf);
- savedeadletter(collf);
- /*
- * Let's pretend nobody else wants to clean up,
- * a true statement at this time.
- */
- exit(1);
- }
-
- savedeadletter(fp)
- register FILE *fp;
- {
- register FILE *dbuf;
- register int c;
- char *cp;
-
- if (fsize(fp) == 0)
- return;
- cp = getdeadletter();
- c = umask(077);
- dbuf = fopen(cp, "a");
- (void) umask(c);
- if (dbuf == NULL)
- return;
- while ((c = getc(fp)) != EOF)
- (void) putc(c, dbuf);
- fclose(dbuf);
- rewind(fp);
- }
-