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/* $NetBSD: cmd3.c,v 1.39 2007/10/30 16:08:11 christos Exp $ */
/*
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)cmd3.c 8.2 (Berkeley) 4/20/95";
#else
__RCSID("$NetBSD: cmd3.c,v 1.39 2007/10/30 16:08:11 christos Exp $");
#endif
#endif /* not lint */
#include "rcv.h"
#include <assert.h>
#include <util.h>
#include "extern.h"
#include "mime.h"
#include "thread.h"
/*
* Mail -- a mail program
*
* Still more user commands.
*/
/*
* Do a dictionary order comparison of the arguments from
* qsort.
*/
static int
diction(const void *a, const void *b)
{
return strcmp(*(const char *const *)a, *(const char *const *)b);
}
/*
* Sort the passed string vector into ascending dictionary
* order.
*/
PUBLIC void
sort(const char **list)
{
const char **ap;
for (ap = list; *ap != NULL; ap++)
continue;
if (ap-list < 2)
return;
qsort(list, (size_t)(ap-list), sizeof(*list), diction);
}
/*
* Expand the shell escape by expanding unescaped !'s into the
* last issued command where possible.
*/
static int
bangexp(char *str)
{
static char lastbang[128];
char bangbuf[LINESIZE];
char *cp, *cp2;
int n;
int changed = 0;
cp = str;
cp2 = bangbuf;
n = sizeof(bangbuf); /* bytes left in bangbuf */
while (*cp) {
if (*cp == '!') {
if (n < (int)strlen(lastbang)) {
overf:
(void)printf("Command buffer overflow\n");
return -1;
}
changed++;
(void)strcpy(cp2, lastbang);
cp2 += strlen(lastbang);
n -= strlen(lastbang);
cp++;
continue;
}
if (*cp == '\\' && cp[1] == '!') {
if (--n <= 1)
goto overf;
*cp2++ = '!';
cp += 2;
changed++;
}
if (--n <= 1)
goto overf;
*cp2++ = *cp++;
}
*cp2 = 0;
if (changed) {
(void)printf("!%s\n", bangbuf);
(void)fflush(stdout);
}
(void)strcpy(str, bangbuf);
(void)strlcpy(lastbang, bangbuf, sizeof(lastbang));
return 0;
}
/*
* Process a shell escape by saving signals, ignoring signals,
* and forking a sh -c
*/
PUBLIC int
shell(void *v)
{
char *str = v;
sig_t sigint = signal(SIGINT, SIG_IGN);
const char *shellcmd;
char cmd[LINESIZE];
(void)strcpy(cmd, str);
if (bangexp(cmd) < 0)
return 1;
if ((shellcmd = value(ENAME_SHELL)) == NULL)
shellcmd = _PATH_CSHELL;
(void)run_command(shellcmd, 0, 0, 1, "-c", cmd, NULL);
(void)signal(SIGINT, sigint);
(void)printf("!\n");
return 0;
}
/*
* Fork an interactive shell.
*/
/*ARGSUSED*/
PUBLIC int
dosh(void *v __unused)
{
sig_t sigint = signal(SIGINT, SIG_IGN);
const char *shellcmd;
if ((shellcmd = value(ENAME_SHELL)) == NULL)
shellcmd = _PATH_CSHELL;
(void)run_command(shellcmd, 0, 0, 1, NULL);
(void)signal(SIGINT, sigint);
(void)putchar('\n');
return 0;
}
/*
* Print out a nice help message from some file or another.
*/
/*ARGSUSED*/
PUBLIC int
help(void *v __unused)
{
cathelp(_PATH_HELP);
return 0;
}
/*
* Change user's working directory.
*/
PUBLIC int
schdir(void *v)
{
char **arglist = v;
const char *cp;
if (*arglist == NULL)
cp = homedir;
else
if ((cp = expand(*arglist)) == NULL)
return 1;
if (chdir(cp) < 0) {
warn("%s", cp);
return 1;
}
return 0;
}
/*
* Return the smopts field if "ReplyAsRecipient" is defined.
*/
static struct name *
set_smopts(struct message *mp)
{
char *cp;
struct name *np = NULL;
char *reply_as_recipient = value(ENAME_REPLYASRECIPIENT);
if (reply_as_recipient &&
(cp = skin(hfield("to", mp))) != NULL &&
extract(cp, GTO)->n_flink == NULL) { /* check for one recipient */
char *p, *q;
size_t len = strlen(cp);
/*
* XXX - perhaps we always want to ignore
* "undisclosed-recipients:;" ?
*/
for (p = q = reply_as_recipient; *p; p = q) {
while (*q != '\0' && *q != ',' && !is_WSP(*q))
q++;
if (p + len == q && strncasecmp(cp, p, len) == 0)
return np;
while (*q == ',' || is_WSP(*q))
q++;
}
np = extract(__UNCONST("-f"), GSMOPTS);
np = cat(np, extract(cp, GSMOPTS));
}
return np;
}
/*
* Modify the subject we are replying to to begin with Re: if
* it does not already.
*/
static char *
reedit(char *subj, const char *pref)
{
char *newsubj;
size_t preflen;
assert(pref != NULL);
if (subj == NULL)
return __UNCONST(pref);
preflen = strlen(pref);
if (strncasecmp(subj, pref, preflen) == 0)
return subj;
newsubj = salloc(strlen(subj) + preflen + 1 + 1);
(void)sprintf(newsubj, "%s %s", pref, subj);
return newsubj;
}
/*
* Set the "In-Reply-To" and "References" header fields appropriately.
* Used in replies.
*/
static void
set_ident_fields(struct header *hp, struct message *mp)
{
char *in_reply_to;
char *references;
in_reply_to = hfield("message-id", mp);
hp->h_in_reply_to = in_reply_to;
references = hfield("references", mp);
hp->h_references = extract(references, GMISC);
hp->h_references = cat(hp->h_references, extract(in_reply_to, GMISC));
}
/*
* Reply to a list of messages. Extract each name from the
* message header and send them off to mail1()
*/
static int
respond_core(int *msgvec)
{
struct message *mp;
char *cp, *rcv, *replyto;
char **ap;
struct name *np;
struct header head;
/* ensure that all header fields are initially NULL */
(void)memset(&head, 0, sizeof(head));
if (msgvec[1] != 0) {
(void)printf("Sorry, can't reply to multiple messages at once\n");
return 1;
}
mp = get_message(msgvec[0]);
touch(mp);
dot = mp;
if ((rcv = skin(hfield("from", mp))) == NULL)
rcv = skin(nameof(mp, 1));
if ((replyto = skin(hfield("reply-to", mp))) != NULL)
np = extract(replyto, GTO);
else if ((cp = skin(hfield("to", mp))) != NULL)
np = extract(cp, GTO);
else
np = NULL;
np = elide(np);
/*
* Delete my name from the reply list,
* and with it, all my alternate names.
*/
np = delname(np, myname);
if (altnames)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
if (np != NULL && replyto == NULL)
np = cat(np, extract(rcv, GTO));
else if (np == NULL) {
if (replyto != NULL)
(void)printf("Empty reply-to field -- replying to author\n");
np = extract(rcv, GTO);
}
head.h_to = np;
if ((head.h_subject = hfield("subject", mp)) == NULL)
head.h_subject = hfield("subj", mp);
head.h_subject = reedit(head.h_subject, "Re:");
if (replyto == NULL && (cp = skin(hfield("cc", mp))) != NULL) {
np = elide(extract(cp, GCC));
np = delname(np, myname);
if (altnames != 0)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
head.h_cc = np;
} else
head.h_cc = NULL;
head.h_bcc = NULL;
head.h_smopts = set_smopts(mp);
#ifdef MIME_SUPPORT
head.h_attach = NULL;
#endif
set_ident_fields(&head, mp);
mail1(&head, 1);
return 0;
}
/*
* Reply to a series of messages by simply mailing to the senders
* and not messing around with the To: and Cc: lists as in normal
* reply.
*/
static int
Respond_core(int msgvec[])
{
struct header head;
struct message *mp;
int *ap;
char *cp;
/* ensure that all header fields are initially NULL */
(void)memset(&head, 0, sizeof(head));
head.h_to = NULL;
for (ap = msgvec; *ap != 0; ap++) {
mp = get_message(*ap);
touch(mp);
dot = mp;
if ((cp = skin(hfield("from", mp))) == NULL)
cp = skin(nameof(mp, 2));
head.h_to = cat(head.h_to, extract(cp, GTO));
}
if (head.h_to == NULL)
return 0;
mp = get_message(msgvec[0]);
if ((head.h_subject = hfield("subject", mp)) == NULL)
head.h_subject = hfield("subj", mp);
head.h_subject = reedit(head.h_subject, "Re:");
head.h_cc = NULL;
head.h_bcc = NULL;
head.h_smopts = set_smopts(mp);
#ifdef MIME_SUPPORT
head.h_attach = NULL;
#endif
set_ident_fields(&head, mp);
mail1(&head, 1);
return 0;
}
PUBLIC int
respond(void *v)
{
int *msgvec = v;
if (value(ENAME_REPLYALL) == NULL)
return respond_core(msgvec);
else
return Respond_core(msgvec);
}
PUBLIC int
Respond(void *v)
{
int *msgvec = v;
if (value(ENAME_REPLYALL) == NULL)
return Respond_core(msgvec);
else
return respond_core(msgvec);
}
#ifdef MIME_SUPPORT
static int
forward_one(int msgno, struct name *h_to)
{
struct attachment attach;
struct message *mp;
struct header hdr;
mp = get_message(msgno);
if (mp == NULL) {
(void)printf("no such message %d\n", msgno);
return 1;
}
(void)printf("message %d\n", msgno);
(void)memset(&attach, 0, sizeof(attach));
attach.a_type = ATTACH_MSG;
attach.a_msg = mp;
attach.a_Content = get_mime_content(&attach, 0);
(void)memset(&hdr, 0, sizeof(hdr));
hdr.h_to = h_to;
if ((hdr.h_subject = hfield("subject", mp)) == NULL)
hdr.h_subject = hfield("subj", mp);
hdr.h_subject = reedit(hdr.h_subject, "Fwd:");
hdr.h_attach = &attach;
hdr.h_smopts = set_smopts(mp);
set_ident_fields(&hdr, mp);
mail1(&hdr, 1);
return 0;
}
PUBLIC int
forward(void *v)
{
int *msgvec = v;
int *ip;
struct header hdr;
int rval;
if (forwardtab[0].i_count == 0) {
/* setup the forward tab */
add_ignore("Status", forwardtab);
}
(void)memset(&hdr, 0, sizeof(hdr));
if ((rval = grabh(&hdr, GTO)) != 0)
return rval;
if (hdr.h_to == NULL) {
(void)printf("address missing!\n");
return 1;
}
for ( ip = msgvec; *ip; ip++) {
int e;
if ((e = forward_one(*ip, hdr.h_to)) != 0)
return e;
}
return 0;
}
#endif /* MIME_SUPPORT */
static int
bounce_one(int msgno, const char **smargs, struct name *h_to)
{
char mailtempname[PATHSIZE];
struct message *mp;
int fd;
FILE *obuf;
int rval;
rval = 0;
obuf = NULL;
(void)snprintf(mailtempname, sizeof(mailtempname),
"%s/mail.RsXXXXXXXXXX", tmpdir);
if ((fd = mkstemp(mailtempname)) == -1 ||
(obuf = Fdopen(fd, "w+")) == NULL) {
if (fd != -1)
(void)close(fd);
warn("%s", mailtempname);
rval = 1;
goto done;
}
(void)rm(mailtempname);
mp = get_message(msgno);
if (mp == NULL) {
(void)printf("no such message %d\n", msgno);
rval = 1;
goto done;
}
else {
char *cp;
char **ap;
struct name *np;
struct header hdr;
/*
* Construct and output a new "To:" field:
* Remove our address from anything in the old "To:" field
* and append that list to the bounce address(es).
*/
np = NULL;
if ((cp = skin(hfield("to", mp))) != NULL)
np = extract(cp, GTO);
np = delname(np, myname);
if (altnames)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
np = cat(h_to, np);
(void)memset(&hdr, 0, sizeof(hdr));
hdr.h_to = elide(np);
(void)puthead(&hdr, obuf, GTO | GCOMMA);
}
if (sendmessage(mp, obuf, bouncetab, NULL, NULL)) {
(void)printf("bounce failed for message %d\n", msgno);
rval = 1;
goto done;
}
rewind(obuf); /* XXX - here or inside mail2() */
mail2(obuf, smargs);
done:
if (obuf)
(void)Fclose(obuf);
return rval;
}
PUBLIC int
bounce(void *v)
{
int *msgvec = v;
int *ip;
const char **smargs;
struct header hdr;
int rval;
if (bouncetab[0].i_count == 0) {
/* setup the bounce tab */
add_ignore("Status", bouncetab);
add_ignore("Delivered-To", bouncetab);
add_ignore("To", bouncetab);
add_ignore("X-Original-To", bouncetab);
}
(void)memset(&hdr, 0, sizeof(hdr));
if ((rval = grabh(&hdr, GTO)) != 0)
return rval;
if (hdr.h_to == NULL)
return 1;
smargs = unpack(hdr.h_to);
for ( ip = msgvec; *ip; ip++) {
int e;
if ((e = bounce_one(*ip, smargs, hdr.h_to)) != 0)
return e;
}
return 0;
}
/*
* Preserve the named messages, so that they will be sent
* back to the system mailbox.
*/
PUBLIC int
preserve(void *v)
{
int *msgvec = v;
int *ip;
if (edit) {
(void)printf("Cannot \"preserve\" in edit mode\n");
return 1;
}
for (ip = msgvec; *ip != 0; ip++)
dot = set_m_flag(*ip, ~(MBOX | MPRESERVE), MPRESERVE);
return 0;
}
/*
* Mark all given messages as unread, preserving the new status.
*/
PUBLIC int
unread(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++)
dot = set_m_flag(*ip, ~(MREAD | MTOUCH | MSTATUS), MSTATUS);
return 0;
}
/*
* Mark all given messages as read.
*/
PUBLIC int
markread(void *v)
{
int *msgvec = v;
int *ip;
for (ip = msgvec; *ip != 0; ip++)
dot = set_m_flag(*ip,
~(MNEW | MTOUCH | MREAD | MSTATUS), MREAD | MSTATUS);
return 0;
}
/*
* Print the size of each message.
*/
PUBLIC int
messize(void *v)
{
int *msgvec = v;
struct message *mp;
int *ip, mesg;
for (ip = msgvec; *ip != 0; ip++) {
mesg = *ip;
mp = get_message(mesg);
(void)printf("%d: %ld/%llu\n", mesg, mp->m_blines,
(unsigned long long)mp->m_size);
}
return 0;
}
/*
* Quit quickly. If we are sourcing, just pop the input level
* by returning an error.
*/
/*ARGSUSED*/
PUBLIC int
rexit(void *v __unused)
{
if (sourcing)
return 1;
exit(0);
/*NOTREACHED*/
}
/*
* Set or display a variable value. Syntax is similar to that
* of csh.
*/
PUBLIC int
set(void *v)
{
const char **arglist = v;
struct var *vp;
const char *cp;
char varbuf[LINESIZE];
const char **ap, **p;
int errs, h, s;
size_t l;
if (*arglist == NULL) {
for (h = 0, s = 1; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
s++;
ap = salloc(s * sizeof(*ap));
for (h = 0, p = ap; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
*p++ = vp->v_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
(void)printf("%s\t%s\n", *p, value(*p));
return 0;
}
errs = 0;
for (ap = arglist; *ap != NULL; ap++) {
cp = *ap;
while (*cp != '=' && *cp != '\0')
++cp;
l = cp - *ap;
if (l >= sizeof(varbuf))
l = sizeof(varbuf) - 1;
(void)strncpy(varbuf, *ap, l);
varbuf[l] = '\0';
if (*cp == '\0')
cp = "";
else
cp++;
if (equal(varbuf, "")) {
(void)printf("Non-null variable name required\n");
errs++;
continue;
}
assign(varbuf, cp);
}
return errs;
}
/*
* Unset a bunch of variable values.
*/
PUBLIC int
unset(void *v)
{
char **arglist = v;
struct var *vp, *vp2;
int errs, h;
char **ap;
errs = 0;
for (ap = arglist; *ap != NULL; ap++) {
if ((vp2 = lookup(*ap)) == NULL) {
if (getenv(*ap)) {
(void)unsetenv(*ap);
} else if (!sourcing) {
(void)printf("\"%s\": undefined variable\n", *ap);
errs++;
}
continue;
}
h = hash(*ap);
if (vp2 == variables[h]) {
variables[h] = variables[h]->v_link;
v_free(vp2->v_name);
v_free(vp2->v_value);
free(vp2);
continue;
}
for (vp = variables[h]; vp->v_link != vp2; vp = vp->v_link)
continue;
vp->v_link = vp2->v_link;
v_free(vp2->v_name);
v_free(vp2->v_value);
free(vp2);
}
return errs;
}
/*
* Show a variable value.
*/
PUBLIC int
show(void *v)
{
const char **arglist = v;
struct var *vp;
const char **ap, **p;
int h, s;
if (*arglist == NULL) {
for (h = 0, s = 1; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
s++;
ap = salloc(s * sizeof(*ap));
for (h = 0, p = ap; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NULL; vp = vp->v_link)
*p++ = vp->v_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
(void)printf("%s=%s\n", *p, value(*p));
return 0;
}
for (ap = arglist; *ap != NULL; ap++) {
char *val = value(*ap);
(void)printf("%s=%s\n", *ap, val ? val : "<null>");
}
return 0;
}
/*
* Put add users to a group.
*/
PUBLIC int
group(void *v)
{
const char **argv = v;
struct grouphead *gh;
struct group *gp;
int h;
int s;
const char *gname;
const char **ap, **p;
if (*argv == NULL) {
for (h = 0, s = 1; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
s++;
ap = salloc(s * sizeof(*ap));
for (h = 0, p = ap; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NULL; gh = gh->g_link)
*p++ = gh->g_name;
*p = NULL;
sort(ap);
for (p = ap; *p != NULL; p++)
printgroup(*p);
return 0;
}
if (argv[1] == NULL) {
printgroup(*argv);
return 0;
}
gname = *argv;
h = hash(gname);
if ((gh = findgroup(gname)) == NULL) {
gh = ecalloc(1, sizeof(*gh));
gh->g_name = vcopy(gname);
gh->g_list = NULL;
gh->g_link = groups[h];
groups[h] = gh;
}
/*
* Insert names from the command list into the group.
* Who cares if there are duplicates? They get tossed
* later anyway.
*/
for (ap = argv + 1; *ap != NULL; ap++) {
gp = ecalloc(1, sizeof(*gp));
gp->ge_name = vcopy(*ap);
gp->ge_link = gh->g_list;
gh->g_list = gp;
}
return 0;
}
/*
* Delete the named group alias. Return zero if the group was
* successfully deleted, or -1 if there was no such group.
*/
static int
delgroup(const char *name)
{
struct grouphead *gh, *p;
struct group *g;
int h;
h = hash(name);
for (gh = groups[h], p = NULL; gh != NULL; p = gh, gh = gh->g_link)
if (strcmp(gh->g_name, name) == 0) {
if (p == NULL)
groups[h] = gh->g_link;
else
p->g_link = gh->g_link;
while (gh->g_list != NULL) {
g = gh->g_list;
gh->g_list = g->ge_link;
free(g->ge_name);
free(g);
}
free(gh->g_name);
free(gh);
return 0;
}
return -1;
}
/*
* The unalias command takes a list of alises
* and discards the remembered groups of users.
*/
PUBLIC int
unalias(void *v)
{
char **ap;
for (ap = v; *ap != NULL; ap++)
(void)delgroup(*ap);
return 0;
}
/*
* The do nothing command for comments.
*/
/*ARGSUSED*/
PUBLIC int
null(void *v __unused)
{
return 0;
}
/*
* Change to another file. With no argument, print information about
* the current file.
*/
PUBLIC int
file(void *v)
{
char **argv = v;
if (argv[0] == NULL) {
(void)newfileinfo(0);
return 0;
}
if (setfile(*argv) < 0)
return 1;
announce();
return 0;
}
/*
* Expand file names like echo
*/
PUBLIC int
echo(void *v)
{
char **argv = v;
char **ap;
const char *cp;
for (ap = argv; *ap != NULL; ap++) {
cp = *ap;
if ((cp = expand(cp)) != NULL) {
if (ap != argv)
(void)putchar(' ');
(void)printf("%s", cp);
}
}
(void)putchar('\n');
return 0;
}
/*
* Routines to push and pop the condition code to support nested
* if/else/endif statements.
*/
static void
push_cond(int c_cond)
{
struct cond_stack_s *csp;
csp = emalloc(sizeof(*csp));
csp->c_cond = c_cond;
csp->c_next = cond_stack;
cond_stack = csp;
}
static int
pop_cond(void)
{
int c_cond;
struct cond_stack_s *csp;
if ((csp = cond_stack) == NULL)
return -1;
c_cond = csp->c_cond;
cond_stack = csp->c_next;
free(csp);
return c_cond;
}
/*
* Conditional commands. These allow one to parameterize one's
* .mailrc and do some things if sending, others if receiving.
*/
static int
if_push(void)
{
push_cond(cond);
cond &= ~CELSE;
if ((cond & (CIF | CSKIP)) == (CIF | CSKIP)) {
cond |= CIGN;
return 1;
}
return 0;
}
PUBLIC int
ifcmd(void *v)
{
char **argv = v;
char *keyword = argv[0];
static const struct modetbl_s {
const char *m_name;
enum mailmode_e m_mode;
} modetbl[] = {
{ "receiving", mm_receiving },
{ "sending", mm_sending },
{ "headersonly", mm_hdrsonly },
{ NULL, 0 },
};
const struct modetbl_s *mtp;
if (if_push())
return 0;
cond = CIF;
for (mtp = modetbl; mtp->m_name; mtp++)
if (strcasecmp(keyword, mtp->m_name) == 0)
break;
if (mtp->m_name == NULL) {
cond = CNONE;
(void)printf("Unrecognized if-keyword: \"%s\"\n", keyword);
return 1;
}
if (mtp->m_mode != mailmode)
cond |= CSKIP;
return 0;
}
PUBLIC int
ifdefcmd(void *v)
{
char **argv = v;
if (if_push())
return 0;
cond = CIF;
if (value(argv[0]) == NULL)
cond |= CSKIP;
return 0;
}
PUBLIC int
ifndefcmd(void *v)
{
int rval;
rval = ifdefcmd(v);
cond ^= CSKIP;
return rval;
}
/*
* Implement 'else'. This is pretty simple -- we just
* flip over the conditional flag.
*/
/*ARGSUSED*/
PUBLIC int
elsecmd(void *v __unused)
{
if (cond_stack == NULL || (cond & (CIF | CELSE)) != CIF) {
(void)printf("\"else\" without matching \"if\"\n");
cond = CNONE;
return 1;
}
if ((cond & CIGN) == 0) {
cond ^= CSKIP;
cond |= CELSE;
}
return 0;
}
/*
* End of if statement. Just set cond back to anything.
*/
/*ARGSUSED*/
PUBLIC int
endifcmd(void *v __unused)
{
if (cond_stack == NULL || (cond & CIF) != CIF) {
(void)printf("\"endif\" without matching \"if\"\n");
cond = CNONE;
return 1;
}
cond = pop_cond();
return 0;
}
/*
* Set the list of alternate names.
*/
PUBLIC int
alternates(void *v)
{
char **namelist = v;
size_t c;
char **ap, **ap2, *cp;
c = argcount(namelist) + 1;
if (c == 1) {
if (altnames == 0)
return 0;
for (ap = altnames; *ap; ap++)
(void)printf("%s ", *ap);
(void)printf("\n");
return 0;
}
if (altnames != 0)
free(altnames);
altnames = ecalloc(c, sizeof(char *));
for (ap = namelist, ap2 = altnames; *ap; ap++, ap2++) {
cp = ecalloc(strlen(*ap) + 1, sizeof(char));
(void)strcpy(cp, *ap);
*ap2 = cp;
}
*ap2 = 0;
return 0;
}
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