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Arquivotheca.AIX-4.1.3/bos/usr/lib/bugfiler/bugfiler.c
seta75D d6fe8fe829 Init
2021-10-11 22:19:34 -03:00

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static char sccsid[] = "@(#)09 1.9 src/bos/usr/lib/bugfiler/bugfiler.c, cmdmailx, bos411, 9428A410j 11/12/93 10:54:38";
/*
* COMPONENT_NAME: CMDMH bugfiler.c
*
* FUNCTIONS: MSGSTR, Mbugfiler, any, chkfrom, chkindex, dodeliver,
* file, findheader, fixaddr, peekc, process, redistribute,
* reply, streq, substr
*
* ORIGINS: 10 26 27
*
* (C) COPYRIGHT International Business Machines Corp. 1985, 1989
* All Rights Reserved
* Licensed Materials - Property of IBM
*
* US Government Users Restricted Rights - Use, duplication or
* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
*/
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* Bug report processing program.
* It is designed to be invoked by alias(5)
* and to be compatible with mh.
*/
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include <pwd.h>
#include <locale.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/dir.h>
#include <errno.h>
#include <nl_types.h>
#include "bf_msg.h"
nl_catd catd;
#define MSGSTR(n,s) catgets(catd,MS_BF,n,s)
#ifndef BUGS_NAME
#ifndef _AIX
#define BUGS_NAME "4bsd-bugs"
#else
#define BUGS_NAME "bugs"
#endif
#endif
#ifndef BUGS_HOME
#ifndef _AIX
#define BUGS_HOME "@ucbvax.BERKELEY.EDU"
#else
#define BUGS_HOME ""
#endif
#endif
#define MAILCMD "/usr/lib/sendmail -i -t"
#ifndef UNIXTOMH
#define UNIXTOMH "/usr/lib/unixtomh"
#endif
char *bugperson = "bugs";
char *maildir = "mail";
char ackfile[] = ".ack";
char errfile[] = ".format";
char sumfile[] = "summary";
char logfile[] = "errors/log";
char redistfile[] = ".redist";
char tmpname[] = "BfXXXXXX";
char draft[] = "RpXXXXXX";
char disttmp[] = "RcXXXXXX";
char buf[8192];
char folder[MAXNAMLEN];
int num;
int msg_prot = 0640;
int folder_prot = 0750;
int debug;
char *index();
char *rindex();
char *fixaddr();
char *any();
main(argc, argv)
char *argv[];
{
register char *cp;
register int n;
int pfd[2];
struct passwd *pwd;
FILE *fack;
setlocale(LC_ALL,"");
catd = catopen(MF_BF,NL_CAT_LOCALE);
if (argc > 7) {
usage:
fprintf(stderr, MSGSTR(USAGE2, "Usage: bugfiler [-d] [-m msg_mode] [-b bugperson] [maildir]\n") );
exit(1);
}
while (--argc > 0) {
cp = *++argv;
if (*cp == '-')
switch (cp[1]) {
case 'd':
debug++;
break;
case 'm': /* set message protection */
n = 0;
for (cp = *++argv; *cp >= '0' && *cp <= '7'; )
n = (n << 3) + (*cp++ - '0');
msg_prot = n & 0777;
--argc;
break;
case 'b': /* set bugs person id */
bugperson = *++argv;
--argc;
break;
default:
goto usage;
}
else
maildir = cp;
}
#ifndef _AIX
if (!debug)
freopen(logfile, "a", stderr);
#endif
pwd = getpwnam(bugperson);
if (pwd == NULL) {
fprintf(stderr, MSGSTR(BPUNKOWN, "%s: bugs person is unknown\n") ,
bugperson);
exit(1);
}
/* don't let root survive passed here! */
if (!pwd->pw_uid) {
fprintf(stderr, MSGSTR(BPUNKOWN, "%s: bugs person is unknown\n") ,
bugperson);
exit(1);
}
/* check to see if we're the owner */
if (setuid(pwd->pw_uid)) {
perror("bugfiler - setuid ");
exit(1);
}
if (chdir(pwd->pw_dir) < 0) {
fprintf(stderr, MSGSTR(NOCHDIR, "can't chdir to %s\n") , pwd->pw_dir);
perror("bugfiler - chdir ");
exit(1);
}
if (chdir(maildir) < 0) {
if(errno == ENOENT){
if(mkdir(maildir,0750) < 0){
fprintf(stderr, MSGSTR(NOCHDIR, "can't make directory %s\n") , maildir);
perror("bugfiler - mkdir ");
exit(1);
}
if (chdir(maildir) < 0) {
fprintf(stderr, MSGSTR(NOCHDIR, "can't chdir to %s\n") , maildir);
perror("bugfiler - chdir ");
exit(1);
}
}
else{
fprintf(stderr, MSGSTR(NOCHDIR, "can't chdir to %s\n") , maildir);
perror("bugfiler - chdir ");
exit(1);
}
}
/* check whether ackfile exists, else create one with default msg */
if((fack = fopen(ackfile,"r")) == NULL){
if((fack = fopen(ackfile,"w")) != NULL){
fprintf(fack,"Received bug report.\n");
fprintf(fack,"Thank you.\n\n");
fclose(fack);
}
}
/* check whether errfile exists, else create one with default format */
if((fack = fopen(errfile,"r")) == NULL){
if((fack = fopen(errfile,"w")) != NULL){
fprintf(fack,"Bug report is in wrong format.\n");
fprintf(fack,"Please send it again in the correct format.\n");
fprintf(fack,"Thank you.\n\n");
fclose(fack);
}
}
umask(0);
#ifdef _AIX
if (!debug)
freopen(logfile, "a", stderr);
#endif
#ifdef UNIXCOMP
/*
* Convert UNIX style mail to mh style by filtering stdin through
* unixtomh.
*/
if (pipe(pfd) >= 0) {
while ((n = fork()) == -1)
sleep(5);
if (n == 0) {
close(pfd[0]);
dup2(pfd[1], 1);
close(pfd[1]);
execl(UNIXTOMH, "unixtomh", 0);
_exit(127);
}
close(pfd[1]);
dup2(pfd[0], 0);
close(pfd[0]);
}
#endif
while (process())
;
exit(0);
}
/* states */
#define EOM 0 /* End of message seen */
#define FLD 1 /* Looking for header lines */
#define BODY 2 /* Looking for message body lines */
/* defines used for tag attributes */
#define H_REQ 01
#define H_SAV 02
#define H_HDR 04
#define H_FND 010
#define FROM &headers[0]
#define FROM_I headers[0].h_info
#define SUBJECT_I headers[1].h_info
#define INDEX &headers[2]
#define INDEX_I headers[2].h_info
#define DATE_I headers[3].h_info
#define MSGID_I headers[4].h_info
#define REPLYTO_I headers[5].h_info
#define TO_I headers[6].h_info
#define CC_I headers[7].h_info
#define FIX headers[10]
struct header {
char *h_tag;
int h_flags;
char *h_info;
} headers[] = {
"From", H_REQ|H_SAV|H_HDR, 0,
"Subject", H_REQ|H_SAV, 0,
"Index", H_REQ|H_SAV, 0,
"Date", H_SAV|H_HDR, 0,
"Message-Id", H_SAV|H_HDR, 0,
"Reply-To", H_SAV|H_HDR, 0,
"To", H_SAV|H_HDR, 0,
"Cc", H_SAV|H_HDR, 0,
"Description", H_REQ, 0,
"Repeat-By", 0, 0,
"Fix", 0, 0,
0, 0, 0,
};
struct header *findheader();
process()
{
register struct header *hp;
register char *cp;
register int c;
char *info;
int state, tmp, no_reply = 0;
FILE *tfp, *fs;
/*
* Insure all headers are in a consistent
* state. Anything left there is free'd.
*/
for (hp = headers; hp->h_tag; hp++) {
hp->h_flags &= ~H_FND;
if (hp->h_info) {
free(hp->h_info);
hp->h_info = 0;
}
}
/*
* Read the report and make a copy. Must conform to RFC822 and
* be of the form... <tag>: <info>
* Note that the input is expected to be in mh mail format
* (i.e., messages are separated by lines of ^A's).
*/
while ((c = getchar()) == '\001' && peekc(stdin) == '\001')
while (getchar() != '\n')
;
if (c == EOF)
return(0); /* all done */
mktemp(tmpname);
if ((tmp = creat(tmpname, msg_prot)) < 0) {
fprintf(stderr, MSGSTR(NOCREATE, "cannot create %s\n") , tmpname);
perror("bugfiler - creat ");
exit(1);
}
if ((tfp = fdopen(tmp, "w")) == NULL) {
fprintf(stderr, MSGSTR(NOTMPOPEN, "cannot fdopen temp file\n") );
perror("bugfiler - fdopen ");
exit(1);
}
for (state = FLD; state != EOF && state != EOM; c = getchar()) {
switch (state) {
case FLD:
if (c == '\n' || c == '-')
goto body;
for (cp = buf; c != ':'; c = getchar()) {
if (cp < buf+sizeof(buf)-1 && c != '\n' && c != EOF) {
*cp++ = c;
continue;
}
*cp = '\0';
fputs(buf, tfp);
state = EOF;
while (c != EOF) {
if (c == '\n')
if ((tmp = peekc(stdin)) == EOF)
break;
else if (tmp == '\001') {
state = EOM;
break;
}
putc(c, tfp);
c = getchar();
}
fclose(tfp);
goto badfmt;
}
*cp = '\0';
fprintf(tfp, "%s:", buf);
hp = findheader(buf, state);
for (cp = buf; ; ) {
if (cp >= buf+sizeof(buf)-1) {
fprintf(stderr, MSGSTR(FLDTRUNC, "field truncated\n") );
while ((c = getchar()) != EOF && c != '\n')
putc(c, tfp);
}
if ((c = getchar()) == EOF) {
state = EOF;
break;
}
putc(c, tfp);
*cp++ = c;
if (c == '\n')
if ((c = peekc(stdin)) != ' ' && c != '\t') {
if (c == EOF)
state = EOF;
else if (c == '\001')
state = EOM;
break;
}
}
*cp = '\0';
cp = buf;
break;
body:
state = BODY;
case BODY:
for (cp = buf; ; c = getchar()) {
if (c == EOF) {
state = EOF;
break;
}
if (c == '\001' && peekc(stdin) == '\001') {
state = EOM;
break;
}
putc(c, tfp);
*cp++ = c;
if (cp >= buf+sizeof(buf)-1 || c == '\n')
break;
}
*cp = '\0';
if ((cp = index(buf, ':')) == NULL)
continue;
*cp++ = '\0';
hp = findheader(buf, state);
}
/*
* Don't save the info if the header wasn't found, we don't
* care about the info, or the header is repeated.
*/
if (hp == NULL || !(hp->h_flags & H_SAV) || hp->h_info)
continue;
while (isspace(*cp))
cp++;
if (*cp) {
info = cp;
while (*cp++);
cp--;
while (isspace(cp[-1]))
*--cp = '\0';
hp->h_info = (char *) malloc(strlen(info) + 1);
if (hp->h_info == NULL) {
fprintf(stderr, MSGSTR(NOMEM2, "ran out of memory\n") );
continue;
}
strcpy(hp->h_info, info);
if (hp == FROM && chkfrom(hp) < 0)
no_reply = 1;
if (hp == INDEX)
chkindex(hp);
}
}
fclose(tfp);
if (no_reply) {
unlink(tmpname);
exit(0);
}
/*
* Verify all the required pieces of information
* are present.
*/
for (hp = headers; hp->h_tag; hp++) {
/*
* Mail the bug report back to the sender with a note
* explaining they must conform to the specification.
*/
if ((hp->h_flags & H_REQ) && !(hp->h_flags & H_FND)) {
if (debug)
printf( MSGSTR(MISSING, "Missing %s\n") , hp->h_tag);
badfmt:
reply(FROM_I, errfile, tmpname);
file(tmpname, "errors");
redistribute("errors", num);
return(state == EOM);
}
}
/*
* Acknowledge receipt.
*/
reply(FROM_I, ackfile, (char *)0);
file(tmpname, folder);
/*
* Append information about the new bug report
* to the summary file.
*/
if ((fs = fopen(sumfile, "a")) == NULL)
fprintf(stderr, MSGSTR(NOOPEN, "Can't open %s\n") , sumfile);
else {
fprintf(fs, "%14.14s/%-3d ", folder, num);
fprintf(fs, "%-51.51s Recv\n", INDEX_I);
fprintf(fs, "\t\t %-51.51s\n", SUBJECT_I);
}
fclose(fs);
/*
* Check redistribution list and, if members,
* mail a copy of the bug report to these people.
*/
redistribute(folder, num);
return(state == EOM);
}
/*
* Lookup the string in the list of headers and return a pointer
* to the entry or NULL.
*/
struct header *
findheader(name, state)
char *name;
int state;
{
register struct header *hp;
if (debug)
printf("findheader(%s, %d)\n", name, state);
for (hp = headers; hp->h_tag; hp++) {
if (!streq(hp->h_tag, buf))
continue;
if ((hp->h_flags & H_HDR) && state != FLD)
continue;
hp->h_flags |= H_FND;
if (debug)
printf("findheader(%s, %d, found)\n", name, state);
return(hp);
}
if (debug)
printf("findheader(%s, %d, is not found\n)", name, state);
return(NULL);
}
/*
* Check the FROM line to eliminate loops.
*/
chkfrom(hp)
struct header *hp;
{
register char *cp1, *cp2;
register char c;
if (debug)
printf("chkfrom(%s)\n", hp->h_info);
if (substr(hp->h_info, BUGS_NAME))
return(-1);
if (substr(hp->h_info, "MAILER-DAEMON"))
return(-1);
return(0);
}
/*
* Check the format of the Index information.
* A side effect is to set the name of the folder if all is well.
*/
chkindex(hp)
struct header *hp;
{
register char *cp1, *cp2;
register char c;
struct stat stbuf;
if (debug)
printf("chkindex(%s)\n", hp->h_info);
/*
* Strip of leading "/", ".", "usr/", or "src/".
*/
cp1 = hp->h_info;
cp2 = rindex(cp1,'\/');
if(debug)
printf("cp1 = %s \n,cp2= %s\n",cp1,cp2);
if(cp2 == NULL){
hp->h_flags &= ~H_FND ;
return ;
}
while (*cp1 == '/' || *cp1 == '.')
cp1++;
while (substr(cp1, "usr/") || substr(cp1, "src/"))
cp1 += 4;
/*
* Read the folder name and remove it from the index line.
*/
for (cp2 = folder; ;) {
switch (c = *cp1++) {
case '/':
if (cp2 == folder)
continue;
break;
case '\0':
cp1--;
break;
case ' ':
case '\t':
while (isspace(*cp1))
cp1++;
break;
default:
if (cp2 < folder+sizeof(folder)-1)
*cp2++ = c;
continue;
}
*cp2 = '\0';
for (cp2 = hp->h_info; *cp2++ = *cp1++; )
;
break;
}
if (debug)
printf( MSGSTR(FOLDEREQ, "folder = %s\n") , folder);
/*
* Check to make sure we have a valid folder name
*/
if (stat(folder, &stbuf) == 0){
if ((stbuf.st_mode & S_IFMT) == S_IFDIR)
return;
}
else{
if(errno == ENOENT){
(void) mkdir(folder, folder_prot);
if (opendir(folder) != NULL) return ;
}
}
/*
* The Index line is not in the correct format so clear
* the H_FND flag to mail back the correct format.
*/
hp->h_flags &= ~H_FND;
}
/*
* Move or copy the file msg to the folder (directory).
* As a side effect, num is set to the number under which
* the message is filed in folder.
*/
file(fname, folder)
char *fname, *folder;
{
register char *cp;
register int n;
char msgname[MAXNAMLEN*2+2];
struct stat stbuf;
DIR *dirp;
struct direct *d;
if (debug)
printf("file(%s, %s)\n", fname, folder);
/*
* Get the next number to use by finding the last message number
* in folder and adding one.
*/
if ((dirp = opendir(folder)) == NULL) {
(void) mkdir(folder, folder_prot);
if ((dirp = opendir(folder)) == NULL) {
fprintf(stderr, MSGSTR(NOOPEN2, "Cannot open %s/%s\n") , maildir, folder);
return;
}
}
num = 0;
while ((d = readdir(dirp)) != NULL) {
cp = d->d_name;
n = 0;
while (isdigit(*cp))
n = n * 10 + (*cp++ - '0');
if (*cp == '\0' && n > num)
num = n;
}
closedir(dirp);
num++;
/*
* Create the destination file "folder/num" and copy fname to it.
*/
sprintf(msgname, "%s/%d", folder, num);
if (link(fname, msgname) < 0) {
int fin, fout;
if ((fin = open(fname, 0)) < 0) {
fprintf(stderr, MSGSTR(NOOPEN3, "cannot open %s\n") , fname);
return;
}
if ((fout = creat(msgname, msg_prot)) < 0) {
fprintf(stderr, MSGSTR(NOCREATE2, "cannot create %s\n") , msgname);
return;
}
while ((n = read(fin, buf, sizeof(buf))) > 0)
write(fout, buf, n);
close(fin);
close(fout);
}
unlink(fname);
}
/*
* Redistribute a bug report to those people indicated
* in the redistribution list file. Perhaps should also
* annotate bug report with this information for future
* reference?
*/
redistribute(folder, num)
char *folder;
int num;
{
FILE *fredist, *fbug, *ftemp;
char line[BUFSIZ], bug[2 * MAXNAMLEN + 1];
register char *cp;
int redistcnt, continuation, first;
fredist = fopen(redistfile, "r");
if (fredist == NULL) {
if (debug)
printf( MSGSTR(NODIST, "redistribute(%s, %d), no distribution list\n") ,
folder, num);
return;
}
continuation = 0;
first = 1;
redistcnt = 0;
while (fgets(line, sizeof (line) - 1, fredist) != NULL) {
if (debug)
printf("%s: %s", redistfile, line);
if (continuation && index(line, '\\'))
continue;
continuation = 0;
cp = any(line, " \t");
if (cp == NULL)
continue;
*cp++ = '\0';
if (strcmp(folder, line) == 0)
goto found;
if (index(cp, '\\'))
continuation = 1;
}
if (debug)
printf( MSGSTR(NOLIST, "no redistribution list found\n") );
fclose(fredist);
return;
found:
mktemp(disttmp);
ftemp = fopen(disttmp, "w+r");
if (ftemp == NULL) {
if (debug)
printf( MSGSTR(NOCREATE3, "%s: couldn't create\n") , disttmp);
return;
}
again:
if (debug)
printf( MSGSTR(DISTLIST, "redistribution list %s") , cp);
while (cp) {
char *user, terminator;
while (*cp && (*cp == ' ' || *cp == '\t' || *cp == ','))
cp++;
user = cp, cp = any(cp, ", \t\n\\");
if (cp) {
terminator = *cp;
*cp++ = '\0';
if (terminator == '\n')
cp = 0;
if (terminator == '\\')
continuation++;
}
if (*user == '\0')
continue;
if (debug)
printf( MSGSTR(COPYTO, "copy to %s\n") , user);
if (first) {
fprintf(ftemp, "Resent-To: %s", user);
first = 0;
} else
fprintf(ftemp, ", %s", user);
redistcnt++;
}
if (!first)
putc('\n', ftemp);
if (continuation) {
first = 1;
continuation = 0;
cp = line;
if (fgets(line, sizeof (line) - 1, fredist))
goto again;
}
fclose(fredist);
if (redistcnt == 0)
goto cleanup;
if (! SUBJECT_I) {
fprintf(ftemp, "Subject: ");
fprintf(ftemp, MSGSTR(UNTITBUG, "Untitled bug report\n") );
}
fprintf(ftemp, "Folder: %s/%d\n", folder, num);
/*
* Create copy of bug report. Perhaps we should
* truncate large messages and just give people
* a pointer to the original?
*/
sprintf(bug, "%s/%d", folder, num);
fbug = fopen(bug, "r");
if (fbug == NULL) {
if (debug)
printf( MSGSTR(DISAPPEAR, "%s: disappeared?\n") , bug);
goto cleanup;
}
first = 1;
while (fgets(line, sizeof (line) - 1, fbug)) {
/* first blank line indicates start of mesg */
if (first && line[0] == '\n') {
first = 0;
}
fputs(line, ftemp);
}
fclose(fbug);
if (first) {
if (debug)
printf( MSGSTR(EMPTYBUG, "empty bug report?\n") );
goto cleanup;
}
if (dodeliver(ftemp))
unlink(disttmp);
fclose(ftemp);
return;
cleanup:
fclose(ftemp);
unlink(disttmp);
}
dodeliver(fd)
FILE *fd;
{
char buf[BUFSIZ], cmd[BUFSIZ];
FILE *pf;
strcpy(cmd, MAILCMD);
if (debug) {
strcat(cmd, " -v");
printf("dodeliver \"%s\"\n", cmd);
}
pf = popen(cmd, "w");
if (pf == NULL) {
if (debug)
printf( MSGSTR(DELFAIL, "dodeliver, \"%s\" failed\n") , cmd);
return (0);
}
rewind(fd);
while (fgets(buf, sizeof (buf) - 1, fd)) {
if (debug)
printf("%s", buf);
(void) fputs(buf, pf);
}
if (debug)
printf( MSGSTR(EOF, "EOF\n") );
(void) pclose(pf);
return (1);
}
/*
* Mail file1 and file2 back to the sender.
*/
reply(to, file1, file2)
char *to, *file1, *file2;
{
int pfd[2], in, w;
FILE *fout;
if (debug)
printf("reply(%s, %s, %s)\n", to, file1, file2);
/*
* Create a temporary file to put the message in.
*/
mktemp(draft);
if ((fout = fopen(draft, "w+r")) == NULL) {
fprintf(stderr, MSGSTR(NOCREATE4, "Can't create %s\n") , draft);
return;
}
/*
* Output the proper header information.
*/
fprintf(fout, "Reply-To: %s%s\n", BUGS_NAME, BUGS_HOME);
fprintf(fout, "From: %s%s (Bugs Bunny)\n", BUGS_NAME, BUGS_HOME);
if (REPLYTO_I != NULL)
to = REPLYTO_I;
if ((to = fixaddr(to)) == 0) {
fprintf(stderr, MSGSTR(NOREPLY, "No one to reply to\n") );
return;
}
fprintf(fout, "To: %s\n", to);
if (SUBJECT_I) {
fprintf(fout, "Subject: ");
if ((SUBJECT_I[0] != 'R' && SUBJECT_I[0] != 'r') ||
(SUBJECT_I[1] != 'E' && SUBJECT_I[1] != 'e') ||
SUBJECT_I[2] != ':')
fprintf(fout, "Re: ");
fprintf(fout, "%s\n", SUBJECT_I);
}
if (DATE_I) {
fprintf(fout, "In-Acknowledgement-Of: Your message of ");
fprintf(fout, "%s.\n", DATE_I);
if (MSGID_I)
fprintf(fout, " %s\n", MSGID_I);
}
fprintf(fout, "\n");
if ((in = open(file1, 0)) >= 0) {
while ((w = read(in, buf, sizeof(buf))) > 0)
fwrite(buf, 1, w, fout);
close(in);
}
if (file2 && (in = open(file2, 0)) >= 0) {
while ((w = read(in, buf, sizeof(buf))) > 0)
fwrite(buf, 1, w, fout);
close(in);
}
if (dodeliver(fout))
unlink(draft);
fclose(fout);
}
/*
* fix names like "xxx (something)" to "xxx" and
* "xxx <something>" to "something".
*/
char *
fixaddr(text)
char *text;
{
register char *cp, *lp, c;
char *tp;
if (!text)
return(0);
for (lp = cp = text; ; ) {
switch (c = *cp++) {
case '(':
while (*cp && *cp++ != ')');
continue;
case '<':
lp = text;
case '>':
continue;
case '\0':
while (lp != text && (*lp == ' ' || *lp == '\t'))
lp--;
*lp = c;
return(text);
}
*lp++ = c;
}
}
/*
* Compare two strings and convert any upper case letters to lower case.
*/
streq(s1, s2)
register char *s1, *s2;
{
register int c;
while (c = *s1++)
if ((c | 040) != (*s2++ | 040))
return(0);
return(*s2 == '\0');
}
/*
* Return true if string s2 matches the first part of s1.
*/
substr(s1, s2)
register char *s1, *s2;
{
register int c;
while (c = *s2++)
if (c != *s1++)
return(0);
return(1);
}
char *
any(cp, set)
register char *cp;
char *set;
{
register char *sp;
if (cp == 0 || set == 0)
return (0);
while (*cp) {
for (sp = set; *sp; sp++)
if (*cp == *sp)
return (cp);
cp++;
}
return ((char *)0);
}
peekc(fp)
FILE *fp;
{
register c;
c = getc(fp);
ungetc(c, fp);
return(c);
}
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