336 lines
8.0 KiB
C
Executable File
336 lines
8.0 KiB
C
Executable File
/*
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* Heirloom mailx - a mail user agent derived from Berkeley Mail.
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*
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* Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
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*/
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#ifdef DOSCCS
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static char sccsid[] = "@(#)collect.c 2.54 (gritter) 6/16/07";
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#endif
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#endif /* not lint */
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/*
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* Mail -- a mail program
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*
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* Collect input from standard input, handling
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* ~ escapes.
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*/
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#include "rcv.h"
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#include "extern.h"
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#include <unistd.h>
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#include <sys/stat.h>
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/*
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* Read a message from standard output and return a read file to it
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* or NULL on error.
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*/
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/*
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* The following hokiness with global variables is so that on
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* receipt of an interrupt signal, the partial message can be salted
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* away on dead.letter.
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*/
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static sighandler_type saveint; /* Previous SIGINT value */
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static sighandler_type savehup; /* Previous SIGHUP value */
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static sighandler_type savetstp; /* Previous SIGTSTP value */
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static sighandler_type savettou; /* Previous SIGTTOU value */
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static sighandler_type savettin; /* Previous SIGTTIN value */
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static FILE *collf; /* File for saving away */
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static int hadintr; /* Have seen one SIGINT so far */
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static sigjmp_buf colljmp; /* To get back to work */
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static int colljmp_p; /* whether to long jump */
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static sigjmp_buf collabort; /* To end collection with error */
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static sigjmp_buf pipejmp; /* On broken pipe */
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static void collint(int s);
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static int putesc(const char *s, FILE *stream);
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/*
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* Put the given file to the end of the attachment list.
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*/
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struct attachment *
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add_attachment(struct attachment *attach, const char *file)
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{
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struct attachment *ap, *nap;
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if (access(file, R_OK) != 0)
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return NULL;
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/*LINTED*/
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nap = csalloc(1, sizeof *nap);
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nap->a_name = salloc(strlen(file) + 1);
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strcpy(nap->a_name, file);
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if (attach != NULL) {
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for (ap = attach; ap->a_flink != NULL; ap = ap->a_flink);
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ap->a_flink = nap;
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nap->a_blink = ap;
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} else {
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nap->a_blink = NULL;
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attach = nap;
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}
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return attach;
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}
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static buf[BUFSIZ] = {0};
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FILE *
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collect(struct header *hp)
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{
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FILE *fbuf;
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struct ignoretab *quoteig;
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int lc, cc, eofcount;
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int c, t;
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char *linebuf = NULL, *cp;
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size_t linesize;
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char *tempMail = NULL;
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int getfields;
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sigset_t oset, nset;
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long count;
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enum sendaction action;
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sighandler_type savedtop;
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(void) &eofcount;
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(void) &getfields;
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(void) &tempMail;
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collf = NULL;
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/*
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* Start catching signals from here, but we're still die on interrupts
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* until we're in the main loop.
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*/
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sigemptyset(&nset);
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sigaddset(&nset, SIGINT);
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sigaddset(&nset, SIGHUP);
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sigprocmask(SIG_BLOCK, &nset, &oset);
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handlerpush(collint);
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if ((saveint = safe_signal(SIGINT, SIG_IGN)) != SIG_IGN)
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safe_signal(SIGINT, collint);
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if ((savehup = safe_signal(SIGHUP, SIG_IGN)) != SIG_IGN)
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;
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if (sigsetjmp(collabort, 1)) {
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if (tempMail != NULL) {
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//rm(tempMail);
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Ftfree(&tempMail);
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}
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goto err;
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}
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if (sigsetjmp(colljmp, 1)) {
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if (tempMail != NULL) {
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//rm(tempMail);
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Ftfree(&tempMail);
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}
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goto err;
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}
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sigprocmask(SIG_SETMASK, &oset, (sigset_t *)NULL);
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noreset++;
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if ((collf = Ftemp(&tempMail, "Rs", "w+", 0600, 1)) == NULL) {
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perror(catgets(catd, CATSET, 51, "temporary mail file"));
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goto err;
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}
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unlink(tempMail);
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Ftfree(&tempMail);
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if ((cp = value("MAILX_HEAD")) != NULL) {
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putesc(cp, collf);
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}
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/*
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* If we are going to prompt for a subject,
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* refrain from printing a newline after
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* the headers (since some people mind).
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*/
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getfields = 0;
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t = GTO|GSUBJECT|GCC|GNL;
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if (value("fullnames"))
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t |= GCOMMA;
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cp = value("escape");
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eofcount = 0;
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hadintr = 0;
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if (!sigsetjmp(colljmp, 1)) {
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} else {
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/*
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* Come here for printing the after-signal message.
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* Duplicate messages won't be printed because
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* the write is aborted if we get a SIGTTOU.
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*/
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cont:
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if (hadintr) {
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fflush(stdout);
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DEBUG_ERROR( catgets(catd, CATSET, 53,
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"\n(Interrupt -- one more to kill letter)\n"));
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} else {
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DEBUG_PRINT(catgets(catd, CATSET, 54, "(continue)\n"));
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fflush(stdout);
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}
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}
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if (value("interactive") == NULL && tildeflag <= 0) {
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/*
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* No tilde escapes, interrupts not expected. Copy
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* standard input the simple way.
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*/
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linebuf = buf;
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linesize = sizeof(buf);
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//linebuf = srealloc(linebuf, linesize = BUFSIZ);
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while ((count = fread(linebuf, sizeof *linebuf,
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linesize, stdin)) > 0) {
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if (fwrite(linebuf, sizeof *linebuf,
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count, collf) != count)
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goto err;
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}
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goto out;
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}
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goto out;
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err:
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if (collf != NULL) {
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Fclose(collf);
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collf = NULL;
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}
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out:
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if (collf != NULL) {
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if ((cp = value("MAILX_TAIL")) != NULL) {
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fflush(collf);
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putesc(cp, collf);
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}
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rewind(collf);
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}
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handlerpop();
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noreset--;
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sigemptyset(&nset);
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sigaddset(&nset, SIGINT);
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sigaddset(&nset, SIGHUP);
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#ifndef OLDBUG
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sigprocmask(SIG_BLOCK, &nset, (sigset_t *)NULL);
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#else
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sigprocmask(SIG_BLOCK, &nset, &oset);
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#endif
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safe_signal(SIGINT, saveint);
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safe_signal(SIGHUP, savehup);
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safe_signal(SIGTSTP, savetstp);
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safe_signal(SIGTTOU, savettou);
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safe_signal(SIGTTIN, savettin);
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sigprocmask(SIG_SETMASK, &oset, (sigset_t *)NULL);
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return collf;
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}
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/*
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* On interrupt, come here to save the partial message in ~/dead.letter.
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* Then jump out of the collection loop.
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*/
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/*ARGSUSED*/
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static void
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collint(int s)
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{
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/*
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* the control flow is subtle, because we can be called from ~q.
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*/
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if (!hadintr) {
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if (value("ignore") != NULL) {
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puts("@");
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fflush(stdout);
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clearerr(stdin);
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return;
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}
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hadintr = 1;
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siglongjmp(colljmp, 1);
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}
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exit_status |= 04;
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rewind(collf);
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if (value("save") != NULL && s != 0)
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savedeadletter(collf);
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siglongjmp(collabort, 1);
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}
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void
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savedeadletter(FILE *fp)
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{
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FILE *dbuf;
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int c, lines = 0, bytes = 0;
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char *cp;
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if (fsize(fp) == 0)
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return;
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cp = getdeadletter();
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c = umask(077);
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dbuf = Fopen(cp, "a");
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umask(c);
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if (dbuf == NULL)
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return;
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DEBUG_PRINT("\"%s\" ", cp);
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while ((c = getc(fp)) != EOF) {
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putc(c, dbuf);
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bytes++;
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if (c == '\n')
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lines++;
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}
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Fclose(dbuf);
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DEBUG_PRINT("%d/%d\n", lines, bytes);
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rewind(fp);
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}
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static int
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putesc(const char *s, FILE *stream)
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{
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int n = 0;
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while (s[0]) {
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if (s[0] == '\\') {
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if (s[1] == 't') {
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putc('\t', stream);
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n++;
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s += 2;
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continue;
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}
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if (s[1] == 'n') {
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putc('\n', stream);
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n++;
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s += 2;
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continue;
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}
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}
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putc(s[0]&0377, stream);
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n++;
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s++;
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}
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putc('\n', stream);
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return ++n;
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}
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