V10/lbin/mailx/cmd3.c
#ident "@(#)cmd3.c 1.3 'attmail mail(1) command'"
#ident "@(#)mailx:cmd3.c 1.11.3.1"
/* Copyright (c) 1984 AT&T */
/* All Rights Reserved */
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
/* The copyright notice above does not evidence any */
/* actual or intended publication of such source code. */
#ident "@(#)mailx:cmd3.c 1.11.1.2"
#include "rcv.h"
/*
* mailx -- a modified version of a University of California at Berkeley
* mail program
*
* Still more user commands.
*/
static int bangexp();
static int diction();
static char *getfilename();
static int resp1();
static int Resp1();
static char *reedit();
static int shell1();
static void sort();
static char prevfile[PATHSIZE];
static char origprevfile[PATHSIZE];
static char lastbang[256];
/*
* Process a shell escape by saving signals, ignoring signals,
* and forking a sh -c
*/
shell(str)
char *str;
{
shell1(str);
printf("!\n");
return(0);
}
static int
shell1(str)
char *str;
{
void (*sig[2])();
int stat[1];
register int t;
register pid_t p;
char *Shell;
char cmd[BUFSIZ];
strcpy(cmd, str);
if (bangexp(cmd) < 0)
return(-1);
if ((Shell = value("SHELL")) == NOSTR || *Shell=='\0')
Shell = SHELL;
for (t = SIGINT; t <= SIGQUIT; t++)
sig[t-SIGINT] = sigset(t, SIG_IGN);
p = fork();
if (p == 0) {
sigchild();
for (t = SIGINT; t <= SIGQUIT; t++)
if (sig[t-SIGINT] != (void (*)())SIG_IGN) /* adb */
sigset(t, SIG_DFL);
execlp(Shell, Shell, "-c", cmd, (char *)0);
perror(Shell);
_exit(1);
}
while (wait(stat) != p)
;
if (p == (pid_t)-1)
perror("fork");
for (t = SIGINT; t <= SIGQUIT; t++)
sigset(t, sig[t-SIGINT]);
return(0);
}
/*
* Fork an interactive shell.
*/
dosh(str)
char *str;
{
void (*sig[2])();
int stat[1];
register int t;
register pid_t p;
char *Shell;
(void) str;
if ((Shell = value("SHELL")) == NOSTR || *Shell=='\0')
Shell = SHELL;
for (t = SIGINT; t <= SIGQUIT; t++)
sig[t-SIGINT] = sigset(t, SIG_IGN);
p = fork();
if (p == 0) {
sigchild();
for (t = SIGINT; t <= SIGQUIT; t++)
if (sig[t-SIGINT] != (void (*)())SIG_IGN) /* adb */
sigset(t, SIG_DFL);
execlp(Shell, Shell, (char *)0);
perror(Shell);
_exit(1);
}
while (wait(stat) != p)
;
if (p == (pid_t)-1)
perror("fork");
for (t = SIGINT; t <= SIGQUIT; t++)
sigset(t, sig[t-SIGINT]);
putchar('\n');
return(0);
}
/*
* Expand the shell escape by expanding unescaped !'s into the
* last issued command where possible.
*/
static int
bangexp(str)
char *str;
{
char bangbuf[BUFSIZ];
register char *cp, *cp2;
register int n;
int changed = 0;
int bangit = (value("bang")!=NOSTR);
cp = str;
cp2 = bangbuf;
n = BUFSIZ;
while (*cp) {
if (*cp=='!' && bangit) {
if (n < strlen(lastbang)) {
overf:
printf("Command buffer overflow\n");
return(-1);
}
changed++;
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) {
printf("!%s\n", bangbuf);
fflush(stdout);
}
strcpy(str, bangbuf);
strncpy(lastbang, bangbuf, sizeof lastbang);
lastbang[(sizeof lastbang)-1] = 0;
return(0);
}
/*
* Print out a nice help message from some file or another.
*/
help()
{
register c;
register FILE *f;
if ((f = fopen(HELPFILE, "r")) == NULL) {
printf("No help just now.\n");
return(1);
}
while ((c = getc(f)) != EOF)
putchar(c);
fclose(f);
return(0);
}
/*
* Change user's working directory.
*/
schdir(str)
char *str;
{
register char *cp;
for (cp = str; *cp == ' '; cp++)
;
if (*cp == '\0')
cp = homedir;
else
if ((cp = expand(cp)) == NOSTR)
return(1);
if (chdir(cp) < 0) {
perror(cp);
return(1);
}
return(0);
}
/*
* Reply to a list of messages. Extract each name from the
* message header and send them off to mail1()
*/
respond(msgvec)
int *msgvec;
{
if (value("flipr") != NOSTR) return(Resp1(msgvec, 0));
else return(resp1(msgvec, 0));
}
followup(msgvec)
int *msgvec;
{
if (value("flipf") != NOSTR) return(Resp1(msgvec, 1));
else return(resp1(msgvec, 1));
}
static int
resp1(msgvec, useauthor)
int *msgvec;
{
char recfile[128];
struct message *mp;
char *cp, buf[2 * LINESIZE], *rcv, *skin_rcv, *replyto, **ap;
struct name *np;
struct header head;
char mylocalname[100], mydomname[200];
if (msgvec[1] != 0) {
printf("Sorry, can't reply to multiple messages at once\n");
return(1);
}
strcpy(mylocalname, myname);
strcat(mylocalname, "@");
strcpy(mydomname, mylocalname);
strcat(mylocalname, host);
strcat(mydomname, domain);
mp = &message[msgvec[0] - 1];
dot = mp;
rcv = nameof(mp);
strncpy(recfile, rcv, sizeof recfile);
if ((replyto = hfield("reply-to", mp, addto)) != NOSTR)
strcpy(buf, replyto);
else if ((cp = hfield("to", mp, addto)) != NOSTR)
strcpy(buf, cp);
else
strcpy(buf, "");
np = elide(extract(buf, GTO));
#ifdef OPTIM
/* rcv = netrename(rcv); */
#endif /* OPTIM */
/*
* Delete my name from the reply list,
* and with it, all my alternate names.
*/
skin_rcv = skin(rcv);
mapf(np, skin_rcv);
np = delname(np, myname);
np = delname(np, mylocalname);
np = delname(np, mydomname);
np = delname(np, skin_rcv);
if (altnames != 0)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
head.h_seq = 1;
cp = detract(np, 0);
if (cp != NOSTR && replyto == NOSTR) {
strcpy(buf, cp);
strcat(buf, unuucp(rcv));
strcat(buf, ", ");
}
else {
if (cp == NOSTR && replyto != NOSTR)
printf("Empty reply-to field -- replying to author\n");
if (cp == NOSTR) {
strcpy(buf, unuucp(rcv));
strcat(buf, ", ");
} else
strcpy(buf, cp);
}
head.h_to = buf;
head.h_subject = hfield("subject", mp, addone);
if (head.h_subject == NOSTR)
head.h_subject = hfield("subj", mp, addone);
head.h_subject = reedit(head.h_subject);
head.h_cc = NOSTR;
cp = hfield("cc", mp, addto);
if (cp != NOSTR) {
np = elide(extract(cp, GCC));
mapf(np, skin_rcv);
np = delname(np, myname);
np = delname(np, mylocalname);
np = delname(np, mydomname);
np = delname(np, skin_rcv);
if (altnames != 0)
for (ap = altnames; *ap; ap++)
np = delname(np, *ap);
head.h_cc = detract(np, 0);
}
head.h_bcc = NOSTR;
head.h_defopt = NOSTR;
head.h_others = NOSTRPTR;
mail1(&head, useauthor ? recfile : 0);
return(0);
}
void
getrecf(buf, recfile, useauthor)
char *buf, *recfile;
{
register char *bp, *cp;
register char *recf = recfile;
register int folderize = (value("outfolder")!=NOSTR);
if (useauthor) {
if (folderize)
*recf++ = '+';
if (debug) fprintf(stderr, "buf='%s'\n", buf);
for (bp=skin(buf), cp=recf; *bp && !any(*bp, ", "); bp++)
if (*bp=='!')
cp = recf;
else
*cp++ = *bp;
*cp = '\0';
if (cp==recf)
*recfile = '\0';
} else {
if ((cp = value("record")) && *cp) {
if (folderize && *cp!='+' && *cp!='/'
&& *expand(cp)!='/')
*recf++ = '+';
strcpy(recf, cp);
} else
*recf = '\0';
}
if (debug) fprintf(stderr, "recfile='%s'\n", recfile);
}
/*
* Modify the subject we are replying to to begin with Re: if
* it does not already.
*/
static char *
reedit(subj)
char *subj;
{
char sbuf[10];
register char *newsubj;
if (subj == NOSTR)
return(NOSTR);
strncpy(sbuf, subj, 3);
sbuf[3] = 0;
if (icequal(sbuf, "re:"))
return(subj);
newsubj = salloc((unsigned)(strlen(subj) + 5));
sprintf(newsubj, "Re: %s", subj);
return(newsubj);
}
/*
* Preserve the named messages, so that they will be sent
* back to the system mailbox.
*/
preserve(msgvec)
int *msgvec;
{
register struct message *mp;
register int *ip, mesg;
if (edit) {
printf("Cannot \"preserve\" in edit mode\n");
return(1);
}
for (ip = msgvec; *ip != NULL; ip++) {
mesg = *ip;
mp = &message[mesg-1];
mp->m_flag |= MPRESERVE;
mp->m_flag &= ~MBOX;
dot = mp;
}
return(0);
}
/*
* Print the size of each message.
*/
messize(msgvec)
int *msgvec;
{
register struct message *mp;
register int *ip, mesg;
for (ip = msgvec; *ip != NULL; ip++) {
mesg = *ip;
mp = &message[mesg-1];
printf("%d: %ld\n", mesg, mp->m_size);
}
return(0);
}
/*
* Quit quickly. If we are sourcing, just pop the input level
* by returning an error.
*/
int
rexit(e)
{
if (sourcing)
return(1);
if (Tflag != NOSTR)
close(creat(Tflag, TEMPPERM));
if (!edit)
Verhogen();
exit(e);
/* NOTREACHED */
}
/*
* Set or display a variable value. Syntax is similar to that
* of csh.
*/
set(arglist)
char **arglist;
{
register struct var *vp;
register char *cp, *cp2;
char varbuf[BUFSIZ], **ap, **p;
int errs, h, s;
if (argcount(arglist) == 0) {
for (h = 0, s = 1; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NOVAR; vp = vp->v_link)
s++;
ap = (char **) salloc(s * sizeof *ap);
for (h = 0, p = ap; h < HSHSIZE; h++)
for (vp = variables[h]; vp != NOVAR; vp = vp->v_link)
*p++ = vp->v_name;
*p = NOSTR;
sort(ap);
for (p = ap; *p != NOSTR; p++)
if (((cp = value(*p)) != 0) && *cp)
printf("%s=\"%s\"\n", *p, cp);
else
printf("%s\n", *p);
return(0);
}
errs = 0;
for (ap = arglist; *ap != NOSTR; ap++) {
cp = *ap;
cp2 = varbuf;
while (*cp != '=' && *cp != '\0')
*cp2++ = *cp++;
*cp2 = '\0';
if (*cp == '\0')
cp = "";
else
cp++;
if (equal(varbuf, "")) {
printf("Non-null variable name required\n");
errs++;
continue;
}
assign(varbuf, cp);
}
return(errs);
}
/*
* Unset a bunch of variable values.
*/
unset(arglist)
char **arglist;
{
register int errs;
register char **ap;
errs = 0;
for (ap = arglist; *ap != NOSTR; ap++)
errs += deassign(*ap);
return(errs);
}
/*
* Check to see if environment variable should override variable settings
*/
check_environment()
{
register struct var *vp;
register int h;
register char *cp;
for( h =0; h < HSHSIZE; h++) {
for( vp = variables[h]; vp != NOVAR; vp = vp->v_link) {
if( (cp = getenv(vp->v_name)) != NULL) {
assign(vp->v_name,cp);
}
}
}
}
/*
* Put add users to a group.
*/
group(argv)
char **argv;
{
register struct grouphead *gh;
register struct mgroup *gp;
register int h;
int s;
char **ap, *gname, **p;
if (argcount(argv) == 0) {
for (h = 0, s = 1; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NOGRP; gh = gh->g_link)
s++;
ap = (char **) salloc(s * sizeof *ap);
for (h = 0, p = ap; h < HSHSIZE; h++)
for (gh = groups[h]; gh != NOGRP; gh = gh->g_link)
*p++ = gh->g_name;
*p = NOSTR;
sort(ap);
for (p = ap; *p != NOSTR; p++)
printgroup(*p);
return(0);
}
if (argcount(argv) == 1) {
printgroup(*argv);
return(0);
}
gname = *argv;
h = hash(gname);
if ((gh = findgroup(gname)) == NOGRP) {
gh = (struct grouphead *) calloc(sizeof *gh, 1);
gh->g_name = vcopy(gname);
gh->g_list = NOGE;
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 != NOSTR; ap++) {
gp = (struct mgroup *) calloc(sizeof *gp, 1);
gp->ge_name = vcopy(*ap);
gp->ge_link = gh->g_list;
gh->g_list = gp;
}
return(0);
}
/*
* Sort the passed string vecotor into ascending dictionary
* order.
*/
static void
sort(list)
char **list;
{
register char **ap;
for (ap = list; *ap != NOSTR; ap++)
;
if (ap-list < 2)
return;
qsort(list, ap-list, sizeof *list, diction);
}
/*
* Do a dictionary order comparison of the arguments from
* qsort.
*/
static int
diction(a, b)
register char **a, **b;
{
return(strcmp(*a, *b));
}
/*
* The do nothing command for comments.
*/
null(e)
char *e;
{
(void) e;
return(0);
}
/*
* Print out the current edit file, if we are editing.
* Otherwise, print the name of the person who's mail
* we are reading.
*/
int
file(argv)
char **argv;
{
register char *cp;
int edit;
if (argv[0] == NOSTR) {
newfileinfo();
return(0);
}
/*
* Acker's! Must switch to the new file.
* We use a funny interpretation --
* # -- gets the previous file
* % -- gets the invoker's post office box
* %user -- gets someone else's post office box
* & -- gets invoker's mbox file
* string -- reads the given file
*/
cp = getfilename(argv[0], &edit);
if (cp == NOSTR)
return(-1);
if (setfile(cp, edit)) {
strcpy(origname, origprevfile);
return(-1);
}
newfileinfo();
return(0);
}
/*
* Evaluate the string given as a new mailbox name.
* Ultimately, we want this to support a number of meta characters.
* Possibly:
* % -- for my system mail box
* %user -- for user's system mail box
* # -- for previous file
* & -- get's invoker's mbox file
* file name -- for any other file
*/
static char *
getfilename(name, aedit)
char *name;
int *aedit;
{
register char *cp;
char savename[BUFSIZ];
char oldmailname[BUFSIZ];
char tmp[BUFSIZ];
/*
* Assume we will be in "edit file" mode, until
* proven wrong.
*/
*aedit = 1;
switch (*name) {
case '%':
*aedit = 0;
strcpy(prevfile, mailname);
strcpy(origprevfile, origname);
if (name[1] != 0) {
strcpy(savename, myname);
strcpy(oldmailname, mailname);
strncpy(myname, name+1, PATHSIZE-1);
myname[PATHSIZE-1] = 0;
findmail();
cp = savestr(mailname);
strcpy(origname, cp);
strcpy(myname, savename);
strcpy(mailname, oldmailname);
return(cp);
}
strcpy(oldmailname, mailname);
findmail();
cp = savestr(mailname);
strcpy(mailname, oldmailname);
strcpy(origname, cp);
return(cp);
case '#':
if (name[1] != 0)
goto regular;
if (prevfile[0] == 0) {
printf("No previous file\n");
return(NOSTR);
}
cp = savestr(prevfile);
strcpy(prevfile, mailname);
strcpy(tmp, origname);
strcpy(origname, origprevfile);
strcpy(origprevfile, tmp);
return(cp);
case '&':
strcpy(prevfile, mailname);
strcpy(origprevfile, origname);
if (name[1] == 0) {
char *tmp;
tmp=Getf("MBOX");
strcpy(origname, tmp);
return(tmp);
}
/* Fall into . . . */
default:
regular:
strcpy(prevfile, mailname);
strcpy(origprevfile, origname);
cp = expand(name);
strcpy(origname, cp);
if (cp[0] != '/') {
name = getcwd(NOSTR, PATHSIZE);
strcat(name, "/");
strcat(name, cp);
cp = name;
}
return(cp);
}
}
/*
* Expand file names like echo
*/
echo(str)
char *str;
{
char cmd[LINESIZE];
sprintf(cmd, "echo %s", str);
shell1(cmd);
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.
*/
Respond(msgvec)
int msgvec[];
{
if (value("flipr") != NOSTR) return(resp1(msgvec, 0));
else return(Resp1(msgvec, 0));
}
Followup(msgvec)
int *msgvec;
{
if (value("flipf") != NOSTR) return(resp1(msgvec, 1));
else return(Resp1(msgvec, 1));
}
static int
Resp1(msgvec, useauthor)
int *msgvec;
{
char recfile[128];
struct header head;
struct message *mp;
register int s, *ap;
register char *cp, *subject;
#ifdef V9
/* just use UPAS-envelopes for return addresses */
extern char *Fromname();
for (s = 0, ap = msgvec; *ap != 0; ap++) {
mp = &message[*ap - 1];
dot = mp;
s += strlen(Fromname(mp)) + 2;
}
if (s == 0)
return(0);
cp = salloc(++s);
head.h_to = cp;
for (ap = msgvec; *ap != 0; ap++) {
mp = &message[*ap - 1];
cp = copy(Fromname(mp), cp);
*cp++ = ',';
*cp++ = ' ';
}
*cp = 0;
#else
for (s = 0, ap = msgvec; *ap != 0; ap++) {
mp = &message[*ap - 1];
dot = mp;
s += strlen(nameof(mp)) + 2;
}
if (s == 0)
return(0);
cp = salloc((unsigned)(++s));
head.h_to = cp;
for (ap = msgvec; *ap != 0; ap++) {
mp = &message[*ap - 1];
cp = copy(nameof(mp), cp);
*cp++ = ',';
*cp++ = ' ';
}
*cp = 0;
#endif /* V9 */
strncpy(recfile, head.h_to, sizeof recfile);
mp = &message[msgvec[0] - 1];
subject = hfield("subject", mp, addone);
head.h_seq = 1;
if (subject == NOSTR)
subject = hfield("subj", mp, addone);
head.h_subject = reedit(subject);
if (subject != NOSTR)
head.h_seq++;
head.h_cc = NOSTR;
head.h_bcc = NOSTR;
head.h_defopt = NOSTR;
head.h_others = NOSTRPTR;
mail1(&head, useauthor ? recfile : 0);
return(0);
}
/*
* Conditional commands. These allow one to parameterize one's
* .mailrc and do some things if sending, others if receiving.
*/
ifcmd(argv)
char **argv;
{
register char *cp;
if (cond != CANY) {
printf("Illegal nested \"if\"\n");
return(1);
}
cond = CANY;
cp = argv[0];
switch (*cp) {
case 'r': case 'R':
cond = CRCV;
break;
case 's': case 'S':
cond = CSEND;
break;
default:
printf("Unrecognized if-keyword: \"%s\"\n", cp);
return(1);
}
return(0);
}
/*
* Implement 'else'. This is pretty simple -- we just
* flip over the conditional flag.
*/
elsecmd()
{
switch (cond) {
case CANY:
printf("\"Else\" without matching \"if\"\n");
return(1);
case CSEND:
cond = CRCV;
break;
case CRCV:
cond = CSEND;
break;
default:
printf("invalid condition encountered\n");
cond = CANY;
break;
}
return(0);
}
/*
* End of if statement. Just set cond back to anything.
*/
endifcmd()
{
if (cond == CANY) {
printf("\"Endif\" without matching \"if\"\n");
return(1);
}
cond = CANY;
return(0);
}
/*
* Set the list of alternate names.
*/
alternates(namelist)
char **namelist;
{
register int c;
register char **ap, **ap2, *cp;
c = argcount(namelist) + 1;
if (c == 1) {
if (altnames == 0)
return(0);
for (ap = altnames; *ap; ap++)
printf("%s ", *ap);
printf("\n");
return(0);
}
if (altnames != 0)
free((char *) altnames);
altnames = (char **) calloc(c, sizeof (char *));
for (ap = namelist, ap2 = altnames; *ap; ap++, ap2++) {
cp = (char *) calloc(strlen(*ap) + 1, sizeof (char));
strcpy(cp, *ap);
*ap2 = cp;
}
*ap2 = 0;
return(0);
}