BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / mail / collect.c

diff --git a/usr/src/usr.bin/mail/collect.c b/usr/src/usr.bin/mail/collect.c
index 9fb7467..4c4038a 100644 (file)
--- a/usr/src/usr.bin/mail/collect.c
+++ b/usr/src/usr.bin/mail/collect.c
@@ -1,4 +1,39 @@
-#
+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)collect.c  5.24 (Berkeley) 4/1/91";
+#endif /* not lint */

 
 /*
  * Mail -- a mail program
 
 /*
  * Mail -- a mail program


@@ -7,8 +42,6 @@
  * ~ escapes.
  */
 
  * ~ escapes.
  */
 

-static char *SccsId = "@(#)collect.c   1.3 %G%";
-

 #include "rcv.h"
 #include <sys/stat.h>
 
 #include "rcv.h"
 #include <sys/stat.h>
 


@@ -20,90 +53,120 @@ static char *SccsId = "@(#)collect.c       1.3 %G%";
 /*
  * The following hokiness with global variables is so that on
  * receipt of an interrupt signal, the partial message can be salted
 /*
  * 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.
+ * away on dead.letter.

  */
 
  */
 

-static int     (*savesig)();           /* Previous SIGINT value */
-static int     (*savehup)();           /* Previous SIGHUP value */
-static FILE    *newi;                  /* File for saving away */
-static FILE    *newo;                  /* Output side of same */
-static int     hf;                     /* Ignore interrups */
+static sig_t   saveint;                /* Previous SIGINT value */
+static sig_t   savehup;                /* Previous SIGHUP value */
+static sig_t   savetstp;               /* Previous SIGTSTP value */
+static sig_t   savettou;               /* Previous SIGTTOU value */
+static sig_t   savettin;               /* Previous SIGTTIN value */
+static FILE    *collf;                 /* File for saving away */

 static int     hadintr;                /* Have seen one SIGINT so far */
 
 static int     hadintr;                /* Have seen one SIGINT so far */
 

-static jmp_buf coljmp;                 /* To get back to work */
+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 *
 
 FILE *

-collect(hp)
+collect(hp, printheaders)

        struct header *hp;
 {
        struct header *hp;
 {

-       FILE *ibuf, *fbuf, *obuf;
-       int lc, cc, escape, collrub(), intack(), stopdot, collhup;
+       FILE *fbuf;
+       int lc, cc, escape, eofcount;

        register int c, t;
        char linebuf[LINESIZE], *cp;
        extern char tempMail[];
        register int c, t;
        char linebuf[LINESIZE], *cp;
        extern char tempMail[];

+       char getsub;
+       int omask;
+       void collint(), collhup(), collstop();

 
 

-       noreset++;
-       stopdot = (value("dot") != NOSTR) && intty;
-       ibuf = obuf = NULL;
-       if (value("ignore") != NOSTR)
-               hf = 1;
-       else
-               hf = 0;
-       hadintr = 0;
-       if ((savesig = sigset(SIGINT, SIG_IGN)) != SIG_IGN)
-               sigset(SIGINT, hf ? intack : collrub), sighold(SIGINT);
-       if ((savehup = sigset(SIGHUP, SIG_IGN)) != SIG_IGN)
-               sigset(SIGHUP, collrub), sighold(SIGINT);
-       newi = NULL;
-       newo = NULL;
-       if ((obuf = fopen(tempMail, "w")) == NULL) {
-               perror(tempMail);
+       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)) {
+               rm(tempMail);

                goto err;
        }
                goto err;
        }

-       newo = obuf;
-       if ((ibuf = fopen(tempMail, "r")) == NULL) {
+       sigsetmask(omask & ~(sigmask(SIGINT) | sigmask(SIGHUP)));
+
+       noreset++;
+       if ((collf = Fopen(tempMail, "w+")) == NULL) {

                perror(tempMail);
                perror(tempMail);

-               newo = NULL;
-               fclose(obuf);

                goto err;
        }
                goto err;
        }

-       newi = ibuf;
-       remove(tempMail);
+       unlink(tempMail);

 
        /*
         * If we are going to prompt for a subject,
         * refrain from printing a newline after
         * the headers (since some people mind).
         */
 
        /*
         * 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;
        t = GTO|GSUBJECT|GCC|GNL;

-       c = 0;
-       if (intty && sflag == NOSTR && hp->h_subject == NOSTR && value("ask"))
-               t &= ~GNL, c++;
-       if (hp->h_seq != 0) {
+       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);
        }
                puthead(hp, stdout, t);
                fflush(stdout);
        }

-       if (c)
-               grabh(hp, GSUBJECT);
-       escape = ESCAPE;

        if ((cp = value("escape")) != NOSTR)
                escape = *cp;
        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 (;;) {
        for (;;) {

-               setjmp(coljmp);
-               sigrelse(SIGINT);
-               sigrelse(SIGHUP);
-               flush();
-               if (readline(stdin, linebuf) <= 0)
+               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;
                        break;

+               }
+               eofcount = 0;

                hadintr = 0;
                hadintr = 0;

-               if (stopdot && equal(".", linebuf))
+               if (linebuf[0] == '.' && linebuf[1] == '\0' &&
+                   value("interactive") != NOSTR &&
+                   (value("dot") != NOSTR || value("ignoreeof") != NOSTR))

                        break;
                        break;

-               if (linebuf[0] != escape ||
-                   (!intty && value("henry") == NOSTR)) {
-                       if ((t = putline(obuf, linebuf)) < 0)
+               if (linebuf[0] != escape || value("interactive") == NOSTR) {
+                       if (putline(collf, linebuf) < 0)

                                goto err;
                        continue;
                }
                                goto err;
                        continue;
                }


@@ -114,122 +177,90 @@ collect(hp)
                         * On double escape, just send the single one.
                         * Otherwise, it's an error.
                         */
                         * On double escape, just send the single one.
                         * Otherwise, it's an error.
                         */

-

                        if (c == escape) {
                        if (c == escape) {

-                               if (putline(obuf, &linebuf[1]) < 0)
+                               if (putline(collf, &linebuf[1]) < 0)

                                        goto err;
                                else
                                        break;
                        }
                        printf("Unknown tilde escape.\n");
                        break;
                                        goto err;
                                else
                                        break;
                        }
                        printf("Unknown tilde escape.\n");
                        break;

-

                case 'C':
                        /*
                         * Dump core.
                         */
                case 'C':
                        /*
                         * Dump core.
                         */

-

                        core();
                        break;
                        core();
                        break;

-

                case '!':
                        /*
                         * Shell escape, send the balance of the
                         * line to sh -c.
                         */
                case '!':
                        /*
                         * Shell escape, send the balance of the
                         * line to sh -c.
                         */

-

                        shell(&linebuf[2]);
                        break;
                        shell(&linebuf[2]);
                        break;

-

                case ':':
                case ':':

-               case '_':

                        /*
                         * Escape to command mode, but be nice!
                         */
                        /*
                         * Escape to command mode, but be nice!
                         */

-

                        execute(&linebuf[2], 1);
                        execute(&linebuf[2], 1);

-                       break;
-
+                       goto cont;

                case '.':
                        /*
                         * Simulate end of file on input.
                         */
                case '.':
                        /*
                         * Simulate end of file on input.
                         */

-                       goto eof;
-
+                       goto out;

                case 'q':
                case 'q':

-               case 'Q':

                        /*
                         * Force a quit of sending mail.
                         * Act like an interrupt happened.
                         */
                        /*
                         * Force a quit of sending mail.
                         * Act like an interrupt happened.
                         */

-

                        hadintr++;
                        hadintr++;

-                       collrub(SIGINT);
+                       collint(SIGINT);

                        exit(1);
                        exit(1);

-

                case 'h':
                        /*
                         * Grab a bunch of headers.
                         */
                case 'h':
                        /*
                         * Grab a bunch of headers.
                         */

-                       if (!intty || !outtty) {
-                               printf("~h: no can do!?\n");
-                               break;
-                       }

                        grabh(hp, GTO|GSUBJECT|GCC|GBCC);
                        grabh(hp, GTO|GSUBJECT|GCC|GBCC);

-                       printf("(continue)\n");
-                       break;
-
+                       goto cont;

                case 't':
                        /*
                         * Add to the To list.
                         */
                case 't':
                        /*
                         * Add to the To list.
                         */

-
-                       hp->h_to = addto(hp->h_to, &linebuf[2]);
-                       hp->h_seq++;
+                       hp->h_to = cat(hp->h_to, extract(&linebuf[2], GTO));

                        break;
                        break;

-

                case 's':
                        /*
                         * Set the Subject list.
                         */
                case 's':
                        /*
                         * Set the Subject list.
                         */

-

                        cp = &linebuf[2];
                        cp = &linebuf[2];

-                       while (any(*cp, " \t"))
+                       while (isspace(*cp))

                                cp++;
                        hp->h_subject = savestr(cp);
                                cp++;
                        hp->h_subject = savestr(cp);

-                       hp->h_seq++;

                        break;
                        break;

-

                case 'c':
                        /*
                         * Add to the CC list.
                         */
                case 'c':
                        /*
                         * Add to the CC list.
                         */

-
-                       hp->h_cc = addto(hp->h_cc, &linebuf[2]);
-                       hp->h_seq++;
+                       hp->h_cc = cat(hp->h_cc, extract(&linebuf[2], GCC));

                        break;
                        break;

-

                case 'b':
                        /*
                         * Add stuff to blind carbon copies list.
                         */
                case 'b':
                        /*
                         * Add stuff to blind carbon copies list.
                         */

-                       hp->h_bcc = addto(hp->h_bcc, &linebuf[2]);
-                       hp->h_seq++;
+                       hp->h_bcc = cat(hp->h_bcc, extract(&linebuf[2], GBCC));

                        break;
                        break;

-

                case 'd':
                case 'd':

-                       copy(deadletter, &linebuf[2]);
+                       strcpy(linebuf + 2, getdeadletter());

                        /* fall into . . . */
                        /* fall into . . . */

-

                case 'r':
                        /*
                         * Invoke a file:
                         * Search for the file name,
                case 'r':
                        /*
                         * Invoke a file:
                         * Search for the file name,

-                        * then open it and copy the contents to obuf.
+                        * then open it and copy the contents to collf.

                         */
                         */

-

                        cp = &linebuf[2];
                        cp = &linebuf[2];

-                       while (any(*cp, " \t"))
+                       while (isspace(*cp))

                                cp++;
                        if (*cp == '\0') {
                                printf("Interpolate what file?\n");
                                cp++;
                        if (*cp == '\0') {
                                printf("Interpolate what file?\n");


@@ -239,36 +270,34 @@ collect(hp)
                        if (cp == NOSTR)
                                break;
                        if (isdir(cp)) {
                        if (cp == NOSTR)
                                break;
                        if (isdir(cp)) {

-                               printf("%s: directory\n");
+                               printf("%s: Directory\n", cp);

                                break;
                        }
                                break;
                        }

-                       if ((fbuf = fopen(cp, "r")) == NULL) {
+                       if ((fbuf = Fopen(cp, "r")) == NULL) {

                                perror(cp);
                                break;
                        }
                        printf("\"%s\" ", cp);
                                perror(cp);
                                break;
                        }
                        printf("\"%s\" ", cp);

-                       flush();
+                       fflush(stdout);

                        lc = 0;
                        cc = 0;
                        lc = 0;
                        cc = 0;

-                       while (readline(fbuf, linebuf) > 0) {
+                       while (readline(fbuf, linebuf, LINESIZE) >= 0) {

                                lc++;
                                lc++;

-                               if ((t = putline(obuf, linebuf)) < 0) {
-                                       fclose(fbuf);
+                               if ((t = putline(collf, linebuf)) < 0) {
+                                       Fclose(fbuf);

                                        goto err;
                                }
                                cc += t;
                        }
                                        goto err;
                                }
                                cc += t;
                        }

-                       fclose(fbuf);
+                       Fclose(fbuf);

                        printf("%d/%d\n", lc, cc);
                        break;
                        printf("%d/%d\n", lc, cc);
                        break;

-

                case 'w':
                        /*
                         * Write the message on a file.
                         */
                case 'w':
                        /*
                         * Write the message on a file.
                         */

-

                        cp = &linebuf[2];
                        cp = &linebuf[2];

-                       while (any(*cp, " \t"))
+                       while (*cp == ' ' || *cp == '\t')

                                cp++;
                        if (*cp == '\0') {
                                fprintf(stderr, "Write what file!?\n");
                                cp++;
                        if (*cp == '\0') {
                                fprintf(stderr, "Write what file!?\n");


@@ -276,77 +305,50 @@ collect(hp)
                        }
                        if ((cp = expand(cp)) == NOSTR)
                                break;
                        }
                        if ((cp = expand(cp)) == NOSTR)
                                break;

-                       fflush(obuf);
-                       rewind(ibuf);
-                       exwrite(cp, ibuf, 1);
+                       rewind(collf);
+                       exwrite(cp, collf, 1);

                        break;
                        break;

-

                case 'm':
                case 'm':

+               case 'M':

                case 'f':
                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.
                         */
                        /*
                         * 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)
+                       if (forward(linebuf + 2, collf, c) < 0)

                                goto err;
                                goto err;

-                       printf("(continue)\n");
-                       break;
-
+                       goto cont;

                case '?':
                case '?':

-                       if ((fbuf = fopen(THELPFILE, "r")) == NULL) {
-                               printf("No help just now.\n");
+                       if ((fbuf = Fopen(_PATH_TILDE, "r")) == NULL) {
+                               perror(_PATH_TILDE);

                                break;
                        }
                                break;
                        }

-                       t = getc(fbuf);
-                       while (t != -1) {
-                               putchar(t);
-                               t = getc(fbuf);
-                       }
-                       fclose(fbuf);
+                       while ((t = getc(fbuf)) != EOF)
+                               (void) putchar(t);
+                       Fclose(fbuf);

                        break;
                        break;

-

                case 'p':
                        /*
                         * Print out the current state of the
                         * message without altering anything.
                         */
                case 'p':
                        /*
                         * Print out the current state of the
                         * message without altering anything.
                         */

-
-                       fflush(obuf);
-                       rewind(ibuf);
+                       rewind(collf);

                        printf("-------\nMessage contains:\n");
                        puthead(hp, stdout, GTO|GSUBJECT|GCC|GBCC|GNL);
                        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 '^':
+                       while ((t = getc(collf)) != EOF)
+                               (void) putchar(t);
+                       goto cont;

                case '|':
                        /*
                         * Pipe message through command.
                         * Collect output as new message.
                         */
                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;
-
+                       rewind(collf);
+                       mespipe(collf, &linebuf[2]);
+                       goto cont;

                case 'v':
                case 'e':
                        /*
                case 'v':
                case 'e':
                        /*


@@ -354,55 +356,38 @@ collect(hp)
                         * 'e' means to use EDITOR
                         * 'v' means to use VISUAL
                         */
                         * '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;
-                       break;
+                       rewind(collf);
+                       mesedit(collf, c);
+                       goto cont;

                }
        }
                }
        }

-eof:
-       fclose(obuf);
-       rewind(ibuf);
-       sigset(SIGINT, savesig);
-       sigset(SIGHUP, savehup);
-       noreset = 0;
-       return(ibuf);
-
+       goto out;

 err:
 err:

-       if (ibuf != NULL)
-               fclose(ibuf);
-       if (obuf != NULL)
-               fclose(obuf);
-       sigset(SIGINT, savesig);
-       sigset(SIGHUP, savehup);
-       noreset = 0;
-       return(NULL);
-}
-
-/*
- * Non destructively interrogate the value of the given signal.
- */
-
-psig(n)
-{
-       register (*wassig)();
-
-       wassig = sigset(n, SIG_IGN);
-       sigset(n, wassig);
-       return((int) wassig);
+       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.
  */
 
 }
 
 /*
  * Write a file, ex-like if f set.
  */
 

-exwrite(name, ibuf, f)
+exwrite(name, fp, f)

        char name[];
        char name[];

-       FILE *ibuf;
+       FILE *fp;

 {
        register FILE *of;
        register int c;
 {
        register FILE *of;
        register int c;


@@ -414,128 +399,51 @@ exwrite(name, ibuf, f)
                printf("\"%s\" ", name);
                fflush(stdout);
        }
                printf("\"%s\" ", name);
                fflush(stdout);
        }

-       if (stat(name, &junk) >= 0) {
+       if (stat(name, &junk) >= 0 && (junk.st_mode & S_IFMT) == S_IFREG) {

                if (!f)
                        fprintf(stderr, "%s: ", name);
                if (!f)
                        fprintf(stderr, "%s: ", name);

-               fprintf(stderr, "File exists\n", name);
+               fprintf(stderr, "File exists\n");

                return(-1);
        }
                return(-1);
        }

-       if ((of = fopen(name, "w")) == NULL) {
+       if ((of = Fopen(name, "w")) == NULL) {

                perror(NOSTR);
                return(-1);
        }
        lc = 0;
        cc = 0;
                perror(NOSTR);
                return(-1);
        }
        lc = 0;
        cc = 0;

-       while ((c = getc(ibuf)) != EOF) {
+       while ((c = getc(fp)) != EOF) {

                cc++;
                if (c == '\n')
                        lc++;
                cc++;
                if (c == '\n')
                        lc++;

-               putc(c, of);
+               (void) putc(c, of);

                if (ferror(of)) {
                        perror(name);
                if (ferror(of)) {
                        perror(name);

-                       fclose(of);
+                       Fclose(of);

                        return(-1);
                }
        }
                        return(-1);
                }
        }

-       fclose(of);
+       Fclose(of);

        printf("%d/%ld\n", lc, cc);
        fflush(stdout);
        return(0);
 }
 
 /*
        printf("%d/%ld\n", lc, cc);
        fflush(stdout);
        return(0);
 }
 
 /*

- * 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.
- *
+ * Edit the message being collected on fp.

  * On return, make the edit file the new temp file.
  */
  * On return, make the edit file the new temp file.
  */

-
-FILE *
-mesedit(ibuf, obuf, c)
-       FILE *ibuf, *obuf;
+mesedit(fp, c)
+       FILE *fp;

 {
 {

-       int pid, s;
-       FILE *fbuf;
-       register int t;
-       int (*sig)();
-       struct stat sbuf;
-       extern char tempMail[], tempEdit[];
-       register char *edit;
-
-       sig = sigset(SIGINT, SIG_IGN);
-       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 ((edit = value(c == 'e' ? "EDITOR" : "VISUAL")) == NOSTR)
-               edit = c == 'e' ? EDITOR : VISUAL;
-       pid = vfork();
-       if (pid == 0) {
-               if (sig != SIG_IGN)
-                       sigsys(SIGINT, SIG_DFL);
-               execl(edit, edit, tempEdit, 0);
-               perror(edit);
-               _exit(1);
-       }
-       if (pid == -1) {
-               perror("fork");
-               remove(tempEdit);
-               goto out;
-       }
-       while (wait(&s) != pid)
-               ;
-       if (s != 0) {
-               printf("Fatal error in \"%s\"\n", edit);
-               remove(tempEdit);
-               goto out;
-       }
-
-       /*
-        * Now switch to new file.
-        */
+       sig_t sigint = signal(SIGINT, SIG_IGN);
+       FILE *nf = run_editor(fp, (off_t)-1, c, 0);

 
 

-       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;
+       if (nf != NULL) {
+               fseek(nf, (off_t)0, 2);
+               collf = nf;
+               Fclose(fp);

        }
        }

-       remove(tempEdit);
-       fclose(obuf);
-       fclose(newi);
-       obuf = fbuf;
-       goto out;
-fix:
-       perror(tempEdit);
-out:
-       sigset(SIGINT, sig);
-       newi = ibuf;
-       return(obuf);
+       (void) signal(SIGINT, sigint);

 }
 
 /*
 }
 
 /*


@@ -544,80 +452,40 @@ out:
  * New message collected from stdout.
  * Sh -c must return 0 to accept the new message.
  */
  * New message collected from stdout.
  * Sh -c must return 0 to accept the new message.
  */

-
-FILE *
-mespipe(ibuf, obuf, cmd)
-       FILE *ibuf, *obuf;
+mespipe(fp, cmd)
+       FILE *fp;

        char cmd[];
 {
        char cmd[];
 {

-       register FILE *ni, *no;
-       int pid, s;
-       int (*savesig)();
-       char *Shell;
+       FILE *nf;
+       sig_t sigint = signal(SIGINT, SIG_IGN);
+       extern char tempEdit[];

 
 

-       newi = ibuf;
-       if ((no = fopen(tempEdit, "w")) == NULL) {
-               perror(tempEdit);
-               return(obuf);
-       }
-       if ((ni = fopen(tempEdit, "r")) == NULL) {
+       if ((nf = Fopen(tempEdit, "w+")) == NULL) {

                perror(tempEdit);
                perror(tempEdit);

-               fclose(no);
-               remove(tempEdit);
-               return(obuf);
-       }
-       remove(tempEdit);
-       savesig = 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.
-                */
-
-               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);
+               goto out;

        }
        }

-       while (wait(&s) != pid)
-               ;
-       if (s != 0 || pid == -1) {
-               fprintf(stderr, "\"%s\" failed!?\n", cmd);
-               goto err;
+       (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(ni) == 0) {
+       if (fsize(nf) == 0) {

                fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);
                fprintf(stderr, "No bytes from \"%s\" !?\n", cmd);

-               goto err;
+               (void) Fclose(nf);
+               goto out;

        }
        }

-

        /*
         * Take new files.
         */
        /*
         * Take new files.
         */

-
-       newi = ni;
-       fclose(ibuf);
-       fclose(obuf);
-       sigset(SIGINT, savesig);
-       return(no);
-
-err:
-       fclose(no);
-       fclose(ni);
-       sigset(SIGINT, savesig);
-       return(obuf);
+       (void) fseek(nf, 0L, 2);
+       collf = nf;
+       (void) Fclose(fp);
+out:
+       (void) signal(SIGINT, sigint);

 }
 
 /*
 }
 
 /*


@@ -628,20 +496,21 @@ err:
  * the message temporary.  The flag argument is 'm' if we
  * should shift over and 'f' if not.
  */
  * the message temporary.  The flag argument is 'm' if we
  * should shift over and 'f' if not.
  */

-
-forward(ms, obuf, f)
+forward(ms, fp, f)

        char ms[];
        char ms[];

-       FILE *obuf;
+       FILE *fp;

 {
 {

-       register int *msgvec, *ip;
+       register int *msgvec;

        extern char tempMail[];
        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);
 
        msgvec = (int *) salloc((msgCount+1) * sizeof *msgvec);
        if (msgvec == (int *) NOSTR)
                return(0);
        if (getmsglist(ms, msgvec, 0) < 0)
                return(0);

-       if (*msgvec == NULL) {
+       if (*msgvec == 0) {

                *msgvec = first(0, MMNORM);
                if (*msgvec == NULL) {
                        printf("No appropriate messages\n");
                *msgvec = first(0, MMNORM);
                if (*msgvec == NULL) {
                        printf("No appropriate messages\n");


@@ -649,149 +518,103 @@ forward(ms, obuf, f)
                }
                msgvec[1] = NULL;
        }
                }
                msgvec[1] = NULL;
        }

+       if (f == 'f' || f == 'F')
+               tabst = NOSTR;
+       else if ((tabst = value("indentprefix")) == NOSTR)
+               tabst = "\t";
+       ig = isupper(f) ? NULL : ignore;

        printf("Interpolating:");
        printf("Interpolating:");

-       for (ip = msgvec; *ip != NULL; ip++) {
-               touch(*ip);
-               printf(" %d", *ip);
-               if (f == 'm') {
-                       if (transmit(&message[*ip-1], obuf) < 0) {
-                               perror(tempMail);
-                               return(-1);
-                       }
-               } else
-                       if (send(&message[*ip-1], obuf) < 0) {
-                               perror(tempMail);
-                               return(-1);
-                       }
+       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);
 }
 
 /*
        }
        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.
+ * Print (continue) when continued after ^Z.

  */
  */

-
-transmit(mailp, obuf)
-       struct message *mailp;
-       FILE *obuf;
+/*ARGSUSED*/
+void
+collstop(s)

 {
 {

-       register struct message *mp;
-       register int c, ch;
-       int n, bol;
-       FILE *ibuf;
-
-       mp = mailp;
-       ibuf = setinput(mp);
-       c = msize(mp);
-       n = c;
-       bol = 1;
-       while (c-- > 0) {
-               if (bol) {
-                       bol = 0;
-                       putc('\t', obuf);
-                       n++;
-                       if (ferror(obuf)) {
-                               perror("/tmp");
-                               return(-1);
-                       }
-               }
-               ch = getc(ibuf);
-               if (ch == '\n')
-                       bol++;
-               putc(ch, obuf);
-               if (ferror(obuf)) {
-                       perror("/tmp");
-                       return(-1);
-               }
+       sig_t 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);

        }
        }

-       return(n);

 }
 
 /*
 }
 
 /*

- * 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.
+ * On interrupt, come here to save the partial message in ~/dead.letter.
+ * Then jump out of the collection loop.

  */
  */

-
-collrub(s)
+/*ARGSUSED*/
+void
+collint(s)

 {
 {

-       register FILE *dbuf;
-       register int c;
-
-       if (s == SIGINT && hadintr == 0) {
-               hadintr++;
-               clrbuf(stdout);
-               printf("\n(Interrupt -- one more to kill letter)\n");
-               sigset(s, collrub);
-               longjmp(coljmp, 1);
-       }
-       fclose(newo);
-       rewind(newi);
-       if (s == SIGINT && value("nosave") != NOSTR || fsize(newi) == 0)
-               goto done;
-       if ((dbuf = fopen(deadletter, "w")) == NULL)
-               goto done;
-       chmod(deadletter, 0600);
-       while ((c = getc(newi)) != EOF)
-               putc(c, dbuf);
-       fclose(dbuf);
-
-done:
-       fclose(newi);
-       sigset(SIGINT, savesig);
-       sigset(SIGHUP, savehup);
-       if (rcvmode) {
-               if (s == SIGHUP)
-                       hangup(SIGHUP);
-               else
-                       stop();
+       /*
+        * 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);

        }
        }

-       else
-               exit(1);
+       rewind(collf);
+       if (value("nosave") == NOSTR)
+               savedeadletter(collf);
+       longjmp(collabort, 1);

 }
 
 }
 

-/*
- * Acknowledge an interrupt signal from the tty by typing an @
- */
-
-intack(s)
+/*ARGSUSED*/
+void
+collhup(s)

 {
 {

-       
-       puts("@");
-       fflush(stdout);
-       clearerr(stdin);
+       rewind(collf);
+       savedeadletter(collf);
+       /*
+        * Let's pretend nobody else wants to clean up,
+        * a true statement at this time.
+        */
+       exit(1);

 }
 
 }
 

-/*
- * Add a string to the end of a header entry field.
- */
-
-char *
-addto(hf, news)
-       char hf[], news[];
+savedeadletter(fp)
+       register FILE *fp;

 {
 {

-       register char *cp, *cp2, *linebuf;
-
-       if (hf == NOSTR)
-               hf = "";
-       if (*news == '\0')
-               return(hf);
-       linebuf = salloc(strlen(hf) + strlen(news) + 2);
-       for (cp = hf; any(*cp, " \t"); cp++)
-               ;
-       for (cp2 = linebuf; *cp;)
-               *cp2++ = *cp++;
-       *cp2++ = ' ';
-       for (cp = news; any(*cp, " \t"); cp++)
-               ;
-       while (*cp != '\0')
-               *cp2++ = *cp++;
-       *cp2 = '\0';
-       return(linebuf);
+       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);

 }
 }