798fbc606d
1) Removed the -B flag (it was stupid on my part) and added a short description indicating how to accomplish the same thing under the "Sending Mail" section of man mail(1). 2) Added a -H flag to dump the headers and exit. It takes optional flags to restrict to old, new, read, unread, and deleted messages (the later being kind of useless - it shares code with something that already had it). 3) Restored the 'Save' command which somehow got mistakenly removed in the last commit and add documentation for it! (My apologies to its author.) 4) Added a 'mkread' command to mark messages as read (the inverse of 'unread'). Should we also have a 'mknew' command? 5) Added a 'smopts' command to keep a database of addresses and sendmail options to be used when sending messages to those addresses. See man mail(1) for a fuller description. 6) Added 'indentpreamble' and 'indentpostscript' variables whose values are inserted before and after a quoted message (~m or ~M escapes). =20 7) Added string formatting abilities for the 'prompt', 'insertpreamble', 'insertpostscript', and header display strings. These strings support all the strftime() format parameters as well as many more specific to mail (see man mail(1)). 8) Fix the -a flag so that it only takes a single filename, unless "mime-attach-list" is defined. This is more conventional and avoids unexpected whitespace issues.
654 lines
13 KiB
C
654 lines
13 KiB
C
/* $NetBSD: support.c,v 1.16 2006/10/31 20:07:32 christos Exp $ */
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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. 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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)aux.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: support.c,v 1.16 2006/10/31 20:07:32 christos Exp $");
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#endif
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#endif /* not lint */
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#include "rcv.h"
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#include "extern.h"
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#include "mime.h"
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/*
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* Mail -- a mail program
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*
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* Auxiliary functions.
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*/
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static char *save2str(char *, char *);
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static int gethfield(FILE *, char [], int, char **); /* don't call this outside hfield()
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or decoding will not get done */
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/*
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* Return a pointer to a dynamic copy of the argument.
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*/
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char *
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savestr(const char *str)
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{
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char *new;
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size_t size = strlen(str) + 1;
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if ((new = salloc(size)) != NULL)
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(void)memmove(new, str, size);
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return new;
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}
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/*
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* Make a copy of new argument incorporating old one.
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*/
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static char *
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save2str(char *str, char *old)
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{
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char *new;
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size_t newsize = strlen(str) + 1;
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size_t oldsize = old ? strlen(old) + 1 : 0;
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if ((new = salloc(newsize + oldsize)) != NULL) {
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if (oldsize) {
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(void)memmove(new, old, oldsize);
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new[oldsize - 1] = ' ';
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}
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(void)memmove(new + oldsize, str, newsize);
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}
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return new;
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}
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/*
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* Touch the named message by setting its MTOUCH flag.
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* Touched messages have the effect of not being sent
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* back to the system mailbox on exit.
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*/
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void
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touch(struct message *mp)
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{
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mp->m_flag |= MTOUCH;
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if ((mp->m_flag & MREAD) == 0)
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mp->m_flag |= MREAD|MSTATUS;
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}
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/*
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* Test to see if the passed file name is a directory.
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* Return true if it is.
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*/
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int
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isdir(const char name[])
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{
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struct stat sbuf;
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if (stat(name, &sbuf) < 0)
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return(0);
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return (S_ISDIR(sbuf.st_mode));
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}
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/*
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* Count the number of arguments in the given string raw list.
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*/
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int
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argcount(char **argv)
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{
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char **ap;
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for (ap = argv; *ap++ != NULL;)
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;
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return ap - argv - 1;
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}
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/*
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* Return the desired header line from the passed message
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* pointer (or NULL if the desired header field is not available).
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*/
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char *
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hfield(const char field[], const struct message *mp)
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{
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FILE *ibuf;
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char linebuf[LINESIZE];
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int lc;
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char *headerfield;
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char *colon, *oldhfield = NULL;
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#ifdef MIME_SUPPORT
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int decode;
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decode = value(ENAME_MIME_DECODE_MSG) &&
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value(ENAME_MIME_DECODE_HDR);
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#endif
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ibuf = setinput(mp);
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if ((lc = mp->m_lines - 1) < 0)
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return NULL;
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if (mail_readline(ibuf, linebuf, LINESIZE) < 0)
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return NULL;
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while (lc > 0) {
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if ((lc = gethfield(ibuf, linebuf, lc, &colon)) < 0)
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return oldhfield;
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#ifdef MIME_SUPPORT
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if ((headerfield = ishfield(linebuf, colon, field)) != NULL) {
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char linebuf2[LINESIZE];
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if (decode && colon)
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headerfield = mime_decode_hfield(linebuf2, sizeof(linebuf2), headerfield);
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oldhfield = save2str(headerfield, oldhfield);
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}
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#else
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if ((headerfield = ishfield(linebuf, colon, field)) != NULL)
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oldhfield = save2str(headerfield, oldhfield);
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#endif
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}
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return oldhfield;
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}
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/*
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* Return the next header field found in the given message.
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* Return >= 0 if something found, < 0 elsewise.
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* "colon" is set to point to the colon in the header.
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* Must deal with \ continuations & other such fraud.
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*/
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static int
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gethfield(FILE *f, char linebuf[], int rem, char **colon)
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{
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char line2[LINESIZE];
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char *cp, *cp2;
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int c;
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for (;;) {
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if (--rem < 0)
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return -1;
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if ((c = mail_readline(f, linebuf, LINESIZE)) <= 0)
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return -1;
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for (cp = linebuf; isprint((unsigned char)*cp) && *cp != ' ' && *cp != ':';
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cp++)
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;
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if (*cp != ':' || cp == linebuf)
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continue;
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/*
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* I guess we got a headline.
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* Handle wraparounding
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*/
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*colon = cp;
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cp = linebuf + c;
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for (;;) {
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while (--cp >= linebuf && (*cp == ' ' || *cp == '\t'))
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;
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cp++;
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if (rem <= 0)
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break;
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(void)ungetc(c = getc(f), f);
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if (c != ' ' && c != '\t')
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break;
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if ((c = mail_readline(f, line2, LINESIZE)) < 0)
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break;
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rem--;
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for (cp2 = line2; *cp2 == ' ' || *cp2 == '\t'; cp2++)
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;
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c -= cp2 - line2;
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if (cp + c >= linebuf + LINESIZE - 2)
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break;
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*cp++ = ' ';
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(void)memmove(cp, cp2, (size_t)c);
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cp += c;
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}
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*cp = 0;
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return rem;
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}
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/* NOTREACHED */
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}
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/*
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* Check whether the passed line is a header line of
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* the desired breed. Return the field body, or 0.
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*/
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char*
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ishfield(const char linebuf[], char *colon, const char field[])
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{
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char *cp = colon;
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*cp = 0;
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if (strcasecmp(linebuf, field) != 0) {
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*cp = ':';
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return 0;
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}
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*cp = ':';
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for (cp++; *cp == ' ' || *cp == '\t'; cp++)
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;
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return cp;
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}
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/*
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* Copy a string, lowercasing it as we go.
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*/
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void
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istrcpy(char *dest, const char *src)
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{
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do {
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*dest++ = tolower((unsigned char)*src);
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} while (*src++ != 0);
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}
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/*
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* The following code deals with input stacking to do source
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* commands. All but the current file pointer are saved on
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* the stack.
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*/
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static int ssp; /* Top of file stack */
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struct sstack {
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FILE *s_file; /* File we were in. */
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int s_cond; /* Saved state of conditionals */
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int s_loading; /* Loading .mailrc, etc. */
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} sstack[NOFILE];
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/*
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* Pushdown current input file and switch to a new one.
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* Set the global flag "sourcing" so that others will realize
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* that they are no longer reading from a tty (in all probability).
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*/
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int
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source(void *v)
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{
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char **arglist = v;
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FILE *fi;
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const char *cp;
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if ((cp = expand(*arglist)) == NULL)
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return(1);
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if ((fi = Fopen(cp, "r")) == NULL) {
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warn("%s", cp);
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return(1);
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}
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if (ssp >= NOFILE - 1) {
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(void)printf("Too much \"sourcing\" going on.\n");
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(void)Fclose(fi);
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return(1);
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}
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sstack[ssp].s_file = input;
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sstack[ssp].s_cond = cond;
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sstack[ssp].s_loading = loading;
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ssp++;
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loading = 0;
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cond = CANY;
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input = fi;
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sourcing++;
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return(0);
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}
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/*
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* Pop the current input back to the previous level.
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* Update the "sourcing" flag as appropriate.
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*/
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int
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unstack(void)
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{
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if (ssp <= 0) {
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(void)printf("\"Source\" stack over-pop.\n");
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sourcing = 0;
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return(1);
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}
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(void)Fclose(input);
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if (cond != CANY)
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(void)printf("Unmatched \"if\"\n");
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ssp--;
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cond = sstack[ssp].s_cond;
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loading = sstack[ssp].s_loading;
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input = sstack[ssp].s_file;
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if (ssp == 0)
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sourcing = loading;
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return(0);
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}
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/*
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* Touch the indicated file.
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* This is nifty for the shell.
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*/
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void
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alter(char *name)
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{
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struct stat sb;
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struct timeval tv[2];
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if (stat(name, &sb))
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return;
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(void)gettimeofday(&tv[0], NULL);
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tv[0].tv_sec++;
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TIMESPEC_TO_TIMEVAL(&tv[1], &sb.st_mtimespec);
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(void)utimes(name, tv);
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}
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/*
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* Examine the passed line buffer and
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* return true if it is all blanks and tabs.
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*/
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int
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blankline(char linebuf[])
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{
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char *cp;
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for (cp = linebuf; *cp; cp++)
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if (*cp != ' ' && *cp != '\t')
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return(0);
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return(1);
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}
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/*
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* Get sender's name from this message. If the message has
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* a bunch of arpanet stuff in it, we may have to skin the name
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* before returning it.
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*/
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char *
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nameof(struct message *mp, int reptype)
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{
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char *cp, *cp2;
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cp = skin(name1(mp, reptype));
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if (reptype != 0 || charcount(cp, '!') < 2)
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return(cp);
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cp2 = strrchr(cp, '!');
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cp2--;
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while (cp2 > cp && *cp2 != '!')
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cp2--;
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if (*cp2 == '!')
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return(cp2 + 1);
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return(cp);
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}
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/*
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* Start of a "comment".
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* Ignore it.
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*/
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char *
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skip_comment(char *cp)
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{
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int nesting = 1;
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for (; nesting > 0 && *cp; cp++) {
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switch (*cp) {
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case '\\':
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if (cp[1])
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cp++;
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break;
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case '(':
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nesting++;
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break;
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case ')':
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nesting--;
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break;
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}
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}
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return cp;
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}
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/*
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* Skin an arpa net address according to the RFC 822 interpretation
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* of "host-phrase."
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*/
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char *
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skin(char *name)
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{
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int c;
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char *cp, *cp2;
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char *bufend;
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int gotlt, lastsp;
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char nbuf[BUFSIZ];
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if (name == NULL)
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return(NULL);
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if (strchr(name, '(') == NULL && strchr(name, '<') == NULL
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&& strchr(name, ' ') == NULL)
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return(name);
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gotlt = 0;
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lastsp = 0;
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bufend = nbuf;
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for (cp = name, cp2 = bufend; (c = *cp++) != '\0'; /* EMPTY */) {
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switch (c) {
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case '(':
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cp = skip_comment(cp);
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lastsp = 0;
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break;
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case '"':
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/*
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* Start of a "quoted-string".
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* Copy it in its entirety.
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*/
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while ((c = *cp) != '\0') {
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cp++;
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if (c == '"')
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break;
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if (c != '\\')
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*cp2++ = c;
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else if ((c = *cp) != '\0') {
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*cp2++ = c;
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cp++;
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}
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}
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lastsp = 0;
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break;
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case ' ':
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if (cp[0] == 'a' && cp[1] == 't' && cp[2] == ' ')
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cp += 3, *cp2++ = '@';
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else
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if (cp[0] == '@' && cp[1] == ' ')
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cp += 2, *cp2++ = '@';
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else
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lastsp = 1;
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break;
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case '<':
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cp2 = bufend;
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gotlt++;
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lastsp = 0;
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break;
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case '>':
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if (gotlt) {
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gotlt = 0;
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while ((c = *cp) && c != ',') {
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cp++;
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if (c == '(')
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cp = skip_comment(cp);
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else if (c == '"')
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while ((c = *cp) != '\0') {
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cp++;
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if (c == '"')
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break;
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if (c == '\\' && *cp)
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cp++;
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}
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}
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lastsp = 0;
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break;
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}
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/* FALLTHROUGH */
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default:
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if (lastsp) {
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lastsp = 0;
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*cp2++ = ' ';
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}
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*cp2++ = c;
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if (c == ',' && !gotlt) {
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*cp2++ = ' ';
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for (; *cp == ' '; cp++)
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;
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lastsp = 0;
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bufend = cp2;
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}
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}
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}
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*cp2 = 0;
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return(savestr(nbuf));
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}
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/*
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* Fetch the sender's name from the passed message.
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* Reptype can be
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* 0 -- get sender's name for display purposes
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* 1 -- get sender's name for reply
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* 2 -- get sender's name for Reply
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*/
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char *
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name1(struct message *mp, int reptype)
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{
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char namebuf[LINESIZE];
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char linebuf[LINESIZE];
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char *cp, *cp2;
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|
FILE *ibuf;
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int firstrun = 1;
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|
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if ((cp = hfield("from", mp)) != NULL)
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return cp;
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if (reptype == 0 && (cp = hfield("sender", mp)) != NULL)
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return cp;
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ibuf = setinput(mp);
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namebuf[0] = '\0';
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if (mail_readline(ibuf, linebuf, LINESIZE) < 0)
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return(savestr(namebuf));
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newname:
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for (cp = linebuf; *cp && *cp != ' '; cp++)
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;
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for (; *cp == ' ' || *cp == '\t'; cp++)
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;
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for (cp2 = &namebuf[strlen(namebuf)];
|
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*cp && *cp != ' ' && *cp != '\t' && cp2 < namebuf + LINESIZE - 1;)
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*cp2++ = *cp++;
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*cp2 = '\0';
|
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if (mail_readline(ibuf, linebuf, LINESIZE) < 0)
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return(savestr(namebuf));
|
|
if ((cp = strchr(linebuf, 'F')) == NULL)
|
|
return(savestr(namebuf));
|
|
if (strncmp(cp, "From", 4) != 0)
|
|
return(savestr(namebuf));
|
|
while ((cp = strchr(cp, 'r')) != NULL) {
|
|
if (strncmp(cp, "remote", 6) == 0) {
|
|
if ((cp = strchr(cp, 'f')) == NULL)
|
|
break;
|
|
if (strncmp(cp, "from", 4) != 0)
|
|
break;
|
|
if ((cp = strchr(cp, ' ')) == NULL)
|
|
break;
|
|
cp++;
|
|
if (firstrun) {
|
|
cp2 = namebuf;
|
|
firstrun = 0;
|
|
} else
|
|
cp2 = strrchr(namebuf, '!') + 1;
|
|
while (*cp && cp2 < namebuf + LINESIZE - 1)
|
|
*cp2++ = *cp++;
|
|
if (cp2 < namebuf + LINESIZE - 1)
|
|
*cp2++ = '!';
|
|
*cp2 = '\0';
|
|
if (cp2 < namebuf + LINESIZE - 1)
|
|
goto newname;
|
|
else
|
|
break;
|
|
}
|
|
cp++;
|
|
}
|
|
return(savestr(namebuf));
|
|
}
|
|
|
|
/*
|
|
* Count the occurrences of c in str
|
|
*/
|
|
int
|
|
charcount(char *str, int c)
|
|
{
|
|
char *cp;
|
|
int i;
|
|
|
|
for (i = 0, cp = str; *cp; cp++)
|
|
if (*cp == c)
|
|
i++;
|
|
return(i);
|
|
}
|
|
|
|
/*
|
|
* Convert c to upper case
|
|
*/
|
|
int
|
|
upcase(int c)
|
|
{
|
|
|
|
if (islower(c))
|
|
return toupper(c);
|
|
return c;
|
|
}
|
|
|
|
/*
|
|
* Copy s1 to s2, return pointer to null in s2.
|
|
*/
|
|
char *
|
|
copy(char *s1, char *s2)
|
|
{
|
|
|
|
while ((*s2++ = *s1++) != '\0')
|
|
;
|
|
return s2 - 1;
|
|
}
|
|
|
|
/*
|
|
* See if the given header field is supposed to be ignored.
|
|
*/
|
|
int
|
|
isign(const char *field, struct ignoretab ignoretabs[2])
|
|
{
|
|
char realfld[LINESIZE];
|
|
|
|
if (ignoretabs == ignoreall)
|
|
return 1;
|
|
/*
|
|
* Lower-case the string, so that "Status" and "status"
|
|
* will hash to the same place.
|
|
*/
|
|
istrcpy(realfld, field);
|
|
if (ignoretabs[1].i_count > 0)
|
|
return (!member(realfld, ignoretabs + 1));
|
|
else
|
|
return (member(realfld, ignoretabs));
|
|
}
|
|
|
|
int
|
|
member(char *realfield, struct ignoretab *table)
|
|
{
|
|
struct ignore *igp;
|
|
|
|
for (igp = table->i_head[hash(realfield)]; igp != 0; igp = igp->i_link)
|
|
if (*igp->i_field == *realfield &&
|
|
equal(igp->i_field, realfield))
|
|
return (1);
|
|
return (0);
|
|
}
|