mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-05 03:39:02 +00:00
856f23ed35
*) Sync with 4.4BSD-Lite2 *) Set usecs for utimes() *) Add 'inc' command and 'autoinc' option that check for new mail manually and automatically, respectively *) Use POSIX signal handling and tty semantics *) Handle long lines correctly when paging messages *) Add ability to explicitly search 'To:' line *) Various manpage cleanups *) Support overriding '~/.mailrc' with $MAILRC *) Support 'askbcc' and 'asksub' options *) Fix various bugs Reviewed by: ru (mail.1) Obtained from: NetBSD
719 lines
14 KiB
C
719 lines
14 KiB
C
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The 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
|
|
#if 0
|
|
static char sccsid[] = "@(#)names.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$FreeBSD$";
|
|
#endif /* not lint */
|
|
|
|
/*
|
|
* Mail -- a mail program
|
|
*
|
|
* Handle name lists.
|
|
*/
|
|
|
|
#include "rcv.h"
|
|
#include <fcntl.h>
|
|
#include "extern.h"
|
|
|
|
/*
|
|
* Allocate a single element of a name list,
|
|
* initialize its name field to the passed
|
|
* name and return it.
|
|
*/
|
|
struct name *
|
|
nalloc(str, ntype)
|
|
char str[];
|
|
int ntype;
|
|
{
|
|
struct name *np;
|
|
|
|
np = (struct name *)salloc(sizeof(*np));
|
|
np->n_flink = NULL;
|
|
np->n_blink = NULL;
|
|
np->n_type = ntype;
|
|
np->n_name = savestr(str);
|
|
return (np);
|
|
}
|
|
|
|
/*
|
|
* Find the tail of a list and return it.
|
|
*/
|
|
struct name *
|
|
tailof(name)
|
|
struct name *name;
|
|
{
|
|
struct name *np;
|
|
|
|
np = name;
|
|
if (np == NULL)
|
|
return (NULL);
|
|
while (np->n_flink != NULL)
|
|
np = np->n_flink;
|
|
return (np);
|
|
}
|
|
|
|
/*
|
|
* Extract a list of names from a line,
|
|
* and make a list of names from it.
|
|
* Return the list or NULL if none found.
|
|
*/
|
|
struct name *
|
|
extract(line, ntype)
|
|
char line[];
|
|
int ntype;
|
|
{
|
|
char *cp, *nbuf;
|
|
struct name *top, *np, *t;
|
|
|
|
if (line == NULL || *line == '\0')
|
|
return (NULL);
|
|
if ((nbuf = malloc(strlen(line) + 1)) == NULL)
|
|
err(1, "Out of memory");
|
|
top = NULL;
|
|
np = NULL;
|
|
cp = line;
|
|
while ((cp = yankword(cp, nbuf)) != NULL) {
|
|
t = nalloc(nbuf, ntype);
|
|
if (top == NULL)
|
|
top = t;
|
|
else
|
|
np->n_flink = t;
|
|
t->n_blink = np;
|
|
np = t;
|
|
}
|
|
(void)free(nbuf);
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Turn a list of names into a string of the same names.
|
|
*/
|
|
char *
|
|
detract(np, ntype)
|
|
struct name *np;
|
|
int ntype;
|
|
{
|
|
int s, comma;
|
|
char *cp, *top;
|
|
struct name *p;
|
|
|
|
comma = ntype & GCOMMA;
|
|
if (np == NULL)
|
|
return (NULL);
|
|
ntype &= ~GCOMMA;
|
|
s = 0;
|
|
if (debug && comma)
|
|
fprintf(stderr, "detract asked to insert commas\n");
|
|
for (p = np; p != NULL; p = p->n_flink) {
|
|
if (ntype && (p->n_type & GMASK) != ntype)
|
|
continue;
|
|
s += strlen(p->n_name) + 1;
|
|
if (comma)
|
|
s++;
|
|
}
|
|
if (s == 0)
|
|
return (NULL);
|
|
s += 2;
|
|
top = salloc(s);
|
|
cp = top;
|
|
for (p = np; p != NULL; p = p->n_flink) {
|
|
if (ntype && (p->n_type & GMASK) != ntype)
|
|
continue;
|
|
cp += strlcpy(cp, p->n_name, strlen(p->n_name) + 1);
|
|
if (comma && p->n_flink != NULL)
|
|
*cp++ = ',';
|
|
*cp++ = ' ';
|
|
}
|
|
*--cp = '\0';
|
|
if (comma && *--cp == ',')
|
|
*cp = '\0';
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Grab a single word (liberal word)
|
|
* Throw away things between ()'s, and take anything between <>.
|
|
*/
|
|
char *
|
|
yankword(ap, wbuf)
|
|
char *ap, wbuf[];
|
|
{
|
|
char *cp, *cp2;
|
|
|
|
cp = ap;
|
|
for (;;) {
|
|
if (*cp == '\0')
|
|
return (NULL);
|
|
if (*cp == '(') {
|
|
int nesting = 0;
|
|
|
|
while (*cp != '\0') {
|
|
switch (*cp++) {
|
|
case '(':
|
|
nesting++;
|
|
break;
|
|
case ')':
|
|
--nesting;
|
|
break;
|
|
}
|
|
if (nesting <= 0)
|
|
break;
|
|
}
|
|
} else if (*cp == ' ' || *cp == '\t' || *cp == ',')
|
|
cp++;
|
|
else
|
|
break;
|
|
}
|
|
if (*cp == '<')
|
|
for (cp2 = wbuf; *cp && (*cp2++ = *cp++) != '>';)
|
|
;
|
|
else
|
|
for (cp2 = wbuf; *cp != '\0' && strchr(" \t,(", *cp) == NULL;
|
|
*cp2++ = *cp++)
|
|
;
|
|
*cp2 = '\0';
|
|
return (cp);
|
|
}
|
|
|
|
/*
|
|
* For each recipient in the passed name list with a /
|
|
* in the name, append the message to the end of the named file
|
|
* and remove him from the recipient list.
|
|
*
|
|
* Recipients whose name begins with | are piped through the given
|
|
* program and removed.
|
|
*/
|
|
struct name *
|
|
outof(names, fo, hp)
|
|
struct name *names;
|
|
FILE *fo;
|
|
struct header *hp;
|
|
{
|
|
int c, ispipe;
|
|
struct name *np, *top;
|
|
time_t now;
|
|
char *date, *fname;
|
|
FILE *fout, *fin;
|
|
|
|
top = names;
|
|
np = names;
|
|
(void)time(&now);
|
|
date = ctime(&now);
|
|
while (np != NULL) {
|
|
if (!isfileaddr(np->n_name) && np->n_name[0] != '|') {
|
|
np = np->n_flink;
|
|
continue;
|
|
}
|
|
ispipe = np->n_name[0] == '|';
|
|
if (ispipe)
|
|
fname = np->n_name+1;
|
|
else
|
|
fname = expand(np->n_name);
|
|
|
|
/*
|
|
* See if we have copied the complete message out yet.
|
|
* If not, do so.
|
|
*/
|
|
|
|
if (image < 0) {
|
|
int fd;
|
|
char tempname[PATHSIZE];
|
|
|
|
(void)snprintf(tempname, sizeof(tempname),
|
|
"%s/mail.ReXXXXXXXXXX", tmpdir);
|
|
if ((fd = mkstemp(tempname)) == -1 ||
|
|
(fout = Fdopen(fd, "a")) == NULL) {
|
|
warn("%s", tempname);
|
|
senderr++;
|
|
goto cant;
|
|
}
|
|
image = open(tempname, O_RDWR);
|
|
(void)rm(tempname);
|
|
if (image < 0) {
|
|
warn("%s", tempname);
|
|
senderr++;
|
|
(void)Fclose(fout);
|
|
goto cant;
|
|
}
|
|
(void)fcntl(image, F_SETFD, 1);
|
|
fprintf(fout, "From %s %s", myname, date);
|
|
puthead(hp, fout,
|
|
GTO|GSUBJECT|GCC|GREPLYTO|GINREPLYTO|GNL);
|
|
while ((c = getc(fo)) != EOF)
|
|
(void)putc(c, fout);
|
|
rewind(fo);
|
|
fprintf(fout, "\n");
|
|
(void)fflush(fout);
|
|
if (ferror(fout)) {
|
|
warn("%s", tempname);
|
|
senderr++;
|
|
(void)Fclose(fout);
|
|
goto cant;
|
|
}
|
|
(void)Fclose(fout);
|
|
}
|
|
|
|
/*
|
|
* Now either copy "image" to the desired file
|
|
* or give it as the standard input to the desired
|
|
* program as appropriate.
|
|
*/
|
|
|
|
if (ispipe) {
|
|
int pid;
|
|
char *sh;
|
|
sigset_t nset;
|
|
|
|
/*
|
|
* XXX
|
|
* We can't really reuse the same image file,
|
|
* because multiple piped recipients will
|
|
* share the same lseek location and trample
|
|
* on one another.
|
|
*/
|
|
if ((sh = value("SHELL")) == NULL)
|
|
sh = _PATH_CSHELL;
|
|
(void)sigemptyset(&nset);
|
|
(void)sigaddset(&nset, SIGHUP);
|
|
(void)sigaddset(&nset, SIGINT);
|
|
(void)sigaddset(&nset, SIGQUIT);
|
|
pid = start_command(sh, &nset, image, -1, "-c", fname,
|
|
NULL);
|
|
if (pid < 0) {
|
|
senderr++;
|
|
goto cant;
|
|
}
|
|
free_child(pid);
|
|
} else {
|
|
int f;
|
|
if ((fout = Fopen(fname, "a")) == NULL) {
|
|
warn("%s", fname);
|
|
senderr++;
|
|
goto cant;
|
|
}
|
|
if ((f = dup(image)) < 0) {
|
|
warn("dup");
|
|
fin = NULL;
|
|
} else
|
|
fin = Fdopen(f, "r");
|
|
if (fin == NULL) {
|
|
fprintf(stderr, "Can't reopen image\n");
|
|
(void)Fclose(fout);
|
|
senderr++;
|
|
goto cant;
|
|
}
|
|
rewind(fin);
|
|
while ((c = getc(fin)) != EOF)
|
|
(void)putc(c, fout);
|
|
if (ferror(fout)) {
|
|
warnx("%s", fname);
|
|
senderr++;
|
|
(void)Fclose(fout);
|
|
(void)Fclose(fin);
|
|
goto cant;
|
|
}
|
|
(void)Fclose(fout);
|
|
(void)Fclose(fin);
|
|
}
|
|
cant:
|
|
/*
|
|
* In days of old we removed the entry from the
|
|
* the list; now for sake of header expansion
|
|
* we leave it in and mark it as deleted.
|
|
*/
|
|
np->n_type |= GDEL;
|
|
np = np->n_flink;
|
|
}
|
|
if (image >= 0) {
|
|
(void)close(image);
|
|
image = -1;
|
|
}
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Determine if the passed address is a local "send to file" address.
|
|
* If any of the network metacharacters precedes any slashes, it can't
|
|
* be a filename. We cheat with .'s to allow path names like ./...
|
|
*/
|
|
int
|
|
isfileaddr(name)
|
|
char *name;
|
|
{
|
|
char *cp;
|
|
|
|
if (*name == '+')
|
|
return (1);
|
|
for (cp = name; *cp != '\0'; cp++) {
|
|
if (*cp == '!' || *cp == '%' || *cp == '@')
|
|
return (0);
|
|
if (*cp == '/')
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Map all of the aliased users in the invoker's mailrc
|
|
* file and insert them into the list.
|
|
* Changed after all these months of service to recursively
|
|
* expand names (2/14/80).
|
|
*/
|
|
|
|
struct name *
|
|
usermap(names)
|
|
struct name *names;
|
|
{
|
|
struct name *new, *np, *cp;
|
|
struct grouphead *gh;
|
|
int metoo;
|
|
|
|
new = NULL;
|
|
np = names;
|
|
metoo = (value("metoo") != NULL);
|
|
while (np != NULL) {
|
|
if (np->n_name[0] == '\\') {
|
|
cp = np->n_flink;
|
|
new = put(new, np);
|
|
np = cp;
|
|
continue;
|
|
}
|
|
gh = findgroup(np->n_name);
|
|
cp = np->n_flink;
|
|
if (gh != NULL)
|
|
new = gexpand(new, gh, metoo, np->n_type);
|
|
else
|
|
new = put(new, np);
|
|
np = cp;
|
|
}
|
|
return (new);
|
|
}
|
|
|
|
/*
|
|
* Recursively expand a group name. We limit the expansion to some
|
|
* fixed level to keep things from going haywire.
|
|
* Direct recursion is not expanded for convenience.
|
|
*/
|
|
|
|
struct name *
|
|
gexpand(nlist, gh, metoo, ntype)
|
|
struct name *nlist;
|
|
struct grouphead *gh;
|
|
int metoo, ntype;
|
|
{
|
|
struct group *gp;
|
|
struct grouphead *ngh;
|
|
struct name *np;
|
|
static int depth;
|
|
char *cp;
|
|
|
|
if (depth > MAXEXP) {
|
|
printf("Expanding alias to depth larger than %d\n", MAXEXP);
|
|
return (nlist);
|
|
}
|
|
depth++;
|
|
for (gp = gh->g_list; gp != NULL; gp = gp->ge_link) {
|
|
cp = gp->ge_name;
|
|
if (*cp == '\\')
|
|
goto quote;
|
|
if (strcmp(cp, gh->g_name) == 0)
|
|
goto quote;
|
|
if ((ngh = findgroup(cp)) != NULL) {
|
|
nlist = gexpand(nlist, ngh, metoo, ntype);
|
|
continue;
|
|
}
|
|
quote:
|
|
np = nalloc(cp, ntype);
|
|
/*
|
|
* At this point should allow to expand
|
|
* to self if only person in group
|
|
*/
|
|
if (gp == gh->g_list && gp->ge_link == NULL)
|
|
goto skip;
|
|
if (!metoo && strcmp(cp, myname) == 0)
|
|
np->n_type |= GDEL;
|
|
skip:
|
|
nlist = put(nlist, np);
|
|
}
|
|
depth--;
|
|
return (nlist);
|
|
}
|
|
|
|
/*
|
|
* Concatenate the two passed name lists, return the result.
|
|
*/
|
|
struct name *
|
|
cat(n1, n2)
|
|
struct name *n1, *n2;
|
|
{
|
|
struct name *tail;
|
|
|
|
if (n1 == NULL)
|
|
return (n2);
|
|
if (n2 == NULL)
|
|
return (n1);
|
|
tail = tailof(n1);
|
|
tail->n_flink = n2;
|
|
n2->n_blink = tail;
|
|
return (n1);
|
|
}
|
|
|
|
/*
|
|
* Unpack the name list onto a vector of strings.
|
|
* Return an error if the name list won't fit.
|
|
*/
|
|
char **
|
|
unpack(np)
|
|
struct name *np;
|
|
{
|
|
char **ap, **top;
|
|
struct name *n;
|
|
int t, extra, metoo, verbose;
|
|
|
|
n = np;
|
|
if ((t = count(n)) == 0)
|
|
errx(1, "No names to unpack");
|
|
/*
|
|
* Compute the number of extra arguments we will need.
|
|
* We need at least two extra -- one for "mail" and one for
|
|
* the terminating 0 pointer. Additional spots may be needed
|
|
* to pass along -f to the host mailer.
|
|
*/
|
|
extra = 2;
|
|
extra++;
|
|
metoo = value("metoo") != NULL;
|
|
if (metoo)
|
|
extra++;
|
|
verbose = value("verbose") != NULL;
|
|
if (verbose)
|
|
extra++;
|
|
top = (char **)salloc((t + extra) * sizeof(*top));
|
|
ap = top;
|
|
*ap++ = "send-mail";
|
|
*ap++ = "-i";
|
|
if (metoo)
|
|
*ap++ = "-m";
|
|
if (verbose)
|
|
*ap++ = "-v";
|
|
for (; n != NULL; n = n->n_flink)
|
|
if ((n->n_type & GDEL) == 0)
|
|
*ap++ = n->n_name;
|
|
*ap = NULL;
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Remove all of the duplicates from the passed name list by
|
|
* insertion sorting them, then checking for dups.
|
|
* Return the head of the new list.
|
|
*/
|
|
struct name *
|
|
elide(names)
|
|
struct name *names;
|
|
{
|
|
struct name *np, *t, *new;
|
|
struct name *x;
|
|
|
|
if (names == NULL)
|
|
return (NULL);
|
|
new = names;
|
|
np = names;
|
|
np = np->n_flink;
|
|
if (np != NULL)
|
|
np->n_blink = NULL;
|
|
new->n_flink = NULL;
|
|
while (np != NULL) {
|
|
t = new;
|
|
while (strcasecmp(t->n_name, np->n_name) < 0) {
|
|
if (t->n_flink == NULL)
|
|
break;
|
|
t = t->n_flink;
|
|
}
|
|
|
|
/*
|
|
* If we ran out of t's, put the new entry after
|
|
* the current value of t.
|
|
*/
|
|
|
|
if (strcasecmp(t->n_name, np->n_name) < 0) {
|
|
t->n_flink = np;
|
|
np->n_blink = t;
|
|
t = np;
|
|
np = np->n_flink;
|
|
t->n_flink = NULL;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, put the new entry in front of the
|
|
* current t. If at the front of the list,
|
|
* the new guy becomes the new head of the list.
|
|
*/
|
|
|
|
if (t == new) {
|
|
t = np;
|
|
np = np->n_flink;
|
|
t->n_flink = new;
|
|
new->n_blink = t;
|
|
t->n_blink = NULL;
|
|
new = t;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* The normal case -- we are inserting into the
|
|
* middle of the list.
|
|
*/
|
|
|
|
x = np;
|
|
np = np->n_flink;
|
|
x->n_flink = t;
|
|
x->n_blink = t->n_blink;
|
|
t->n_blink->n_flink = x;
|
|
t->n_blink = x;
|
|
}
|
|
|
|
/*
|
|
* Now the list headed up by new is sorted.
|
|
* Go through it and remove duplicates.
|
|
*/
|
|
|
|
np = new;
|
|
while (np != NULL) {
|
|
t = np;
|
|
while (t->n_flink != NULL &&
|
|
strcasecmp(np->n_name, t->n_flink->n_name) == 0)
|
|
t = t->n_flink;
|
|
if (t == np || t == NULL) {
|
|
np = np->n_flink;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Now t points to the last entry with the same name
|
|
* as np. Make np point beyond t.
|
|
*/
|
|
|
|
np->n_flink = t->n_flink;
|
|
if (t->n_flink != NULL)
|
|
t->n_flink->n_blink = np;
|
|
np = np->n_flink;
|
|
}
|
|
return (new);
|
|
}
|
|
|
|
/*
|
|
* Put another node onto a list of names and return
|
|
* the list.
|
|
*/
|
|
struct name *
|
|
put(list, node)
|
|
struct name *list, *node;
|
|
{
|
|
node->n_flink = list;
|
|
node->n_blink = NULL;
|
|
if (list != NULL)
|
|
list->n_blink = node;
|
|
return (node);
|
|
}
|
|
|
|
/*
|
|
* Determine the number of undeleted elements in
|
|
* a name list and return it.
|
|
*/
|
|
int
|
|
count(np)
|
|
struct name *np;
|
|
{
|
|
int c;
|
|
|
|
for (c = 0; np != NULL; np = np->n_flink)
|
|
if ((np->n_type & GDEL) == 0)
|
|
c++;
|
|
return (c);
|
|
}
|
|
|
|
/*
|
|
* Delete the given name from a namelist.
|
|
*/
|
|
struct name *
|
|
delname(np, name)
|
|
struct name *np;
|
|
char name[];
|
|
{
|
|
struct name *p;
|
|
|
|
for (p = np; p != NULL; p = p->n_flink)
|
|
if (strcasecmp(p->n_name, name) == 0) {
|
|
if (p->n_blink == NULL) {
|
|
if (p->n_flink != NULL)
|
|
p->n_flink->n_blink = NULL;
|
|
np = p->n_flink;
|
|
continue;
|
|
}
|
|
if (p->n_flink == NULL) {
|
|
if (p->n_blink != NULL)
|
|
p->n_blink->n_flink = NULL;
|
|
continue;
|
|
}
|
|
p->n_blink->n_flink = p->n_flink;
|
|
p->n_flink->n_blink = p->n_blink;
|
|
}
|
|
return (np);
|
|
}
|
|
|
|
/*
|
|
* Pretty print a name list
|
|
* Uncomment it if you need it.
|
|
*/
|
|
|
|
/*
|
|
void
|
|
prettyprint(name)
|
|
struct name *name;
|
|
{
|
|
struct name *np;
|
|
|
|
np = name;
|
|
while (np != NULL) {
|
|
fprintf(stderr, "%s(%d) ", np->n_name, np->n_type);
|
|
np = np->n_flink;
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
*/
|