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BSD 4_3 release
[unix-history] / usr / contrib / news / src / inews.c
/*
* This software is Copyright (c) 1986 by Rick Adams.
*
* Permission is hereby granted to copy, reproduce, redistribute or
* otherwise use this software as long as: there is no monetary
* profit gained specifically from the use or reproduction or this
* software, it is not sold, rented, traded or otherwise marketed, and
* this copyright notice is included prominently in any copy
* made.
*
* The author make no claims as to the fitness or correctness of
* this software for any use whatsoever, and it is provided as is.
* Any use of this software is at the user's own risk.
*
* inews - insert, receive, and transmit news articles.
*
*/
#ifdef SCCSID
static char *SccsId = "@(#)inews.c 2.61 3/19/86";
#endif /* SCCSID */
#include "iparams.h"
#include <errno.h>
/* local defines for inews */
#define OPTION 0 /* pick up an option string */
#define STRING 1 /* pick up a string of arguments */
#define UNKNOWN 0001 /* possible modes for news program */
#define UNPROC 0002 /* Unprocessed input */
#define PROC 0004 /* Processed input */
#define CANCEL 0010 /* Cancel an article */
#define CREATENG 0020 /* Create a new newsgroup */
char forgedname[NAMELEN]; /* A user specified -f option. */
extern char histline[];
/* Fake sys line in case they forget their own system */
struct srec dummy_srec = { "MEMEME", "", "all", "", "" };
char *Progname = "inews"; /* used by xerror to identify failing program */
struct { /* options table. */
char optlet; /* option character. */
char filchar; /* if to pickup string, fill character. */
int flag; /* TRUE if have seen this opt. */
int oldmode; /* OR of legal input modes. */
int newmode; /* output mode. */
char *buf; /* string buffer */
} *optpt, options[] = { /*
optlet filchar flag oldmode newmode buf */
't', ' ', FALSE, UNPROC, UNKNOWN, header.title,
'n', NGDELIM, FALSE, UNPROC, UNKNOWN, header.nbuf,
'd', '\0', FALSE, UNPROC, UNKNOWN, header.distribution,
'e', ' ', FALSE, UNPROC, UNKNOWN, header.expdate,
'p', '\0', FALSE, UNKNOWN,PROC, filename,
'f', '\0', FALSE, UNPROC, UNKNOWN, forgedname,
'F', ' ', FALSE, UNPROC, UNKNOWN, header.followid,
'c', '\0', FALSE, UNKNOWN,CANCEL, filename,
'C', '\0', FALSE, UNKNOWN,CREATENG, header.nbuf,
#define hflag options[9].flag
'h', '\0', FALSE, UNPROC, UNKNOWN, filename,
#define oflag options[10].flag
'o', '\0', FALSE, UNPROC, UNKNOWN, header.organization,
#define Mflag options[11].flag
'M', '\0', FALSE, UNPROC, UNKNOWN, filename,
'a', '\0', FALSE, UNPROC, UNKNOWN, header.approved,
'\0', '\0', 0, 0, 0, (char *)NULL
};
FILE *mailhdr();
char *genversion();
extern int errno;
/*
* Authors:
* Matt Glickman glickman@ucbarpa.Berkeley.ARPA
* Mark Horton mark@cbosgd.UUCP
* Stephen Daniels swd@mcnc.UUCP
* Tom Truscott trt@duke.UUCP
* IHCC version adapted by:
* Larry Marek larry@ihuxf.UUCP
*/
main(argc, argv)
int argc;
register char **argv;
{
int state; /* which type of argument to pick up */
int tlen, len; /* temps for string processing routine */
register char *ptr; /* pointer to rest of buffer */
int filchar; /* fill character (state = STRING) */
char *user = NULL, *home = NULL; /* environment temps */
struct passwd *pw; /* struct for pw lookup */
struct group *gp; /* struct for group lookup */
register int i;
FILE *mfd; /* mail file file-descriptor */
char cbuf[BUFLEN]; /* command buffer */
/* uuxqt doesn't close all it's files */
for (i = 3; !close(i); i++)
;
/* set up defaults and initialize. */
mode = UNKNOWN;
pathinit();
ptr = rindex(*argv, '/');
if (!ptr)
ptr = *argv - 1;
if (!strncmp(ptr+1, "rnews", 5)) {
mode = PROC;
#ifdef NICENESS
nice(NICENESS);
#endif /* NICENESS */
} else if (argc < 2)
goto usage;
state = OPTION;
header.title[0] = header.nbuf[0] = filename[0] = '\0';
/* check for existence of special files */
if (!rwaccess(ARTFILE)) {
mfd = mailhdr((struct hbuf *)NULL, exists(ARTFILE) ? "Unwritable files!" : "Missing files!");
if (mfd != NULL) {
#ifdef HIDDENNET
fprintf(mfd,"System: %s.%s\n\nThere was a problem with %s!!\n", LOCALSYSNAME, FULLSYSNAME, ARTFILE);
#else /* !HIDDENNET */
fprintf(mfd,"System: %s\n\nThere was a problem with %s!!\n", FULLSYSNAME, ARTFILE);
#endif /* !HIDDENNET */
(void) sprintf(cbuf, "touch %s;chmod 666 %s", ARTFILE, ARTFILE);
(void) system(cbuf);
if (rwaccess(ARTFILE))
fprintf(mfd, "The problem has been taken care of.\n");
else
fprintf(mfd, "Corrective action failed - check suid bits.\n");
(void) mclose(mfd);
}
}
if (!rwaccess(ACTIVE)) {
mfd = mailhdr((struct hbuf *)NULL, exists(ACTIVE) ? "Unwritable files!" : "Missing files!");
if (mfd != NULL) {
#ifdef HIDDENNET
fprintf(mfd,"System: %s.%s\n\nThere was a problem with %s!!\n", LOCALSYSNAME, FULLSYSNAME, ARTFILE);
#else /* !HIDDENNET */
fprintf(mfd, "System: %s\n\nThere was a problem with %s!!\n", FULLSYSNAME, ACTIVE);
#endif /* !HIDDENNET */
(void) sprintf(cbuf, "touch %s;chmod 666 %s", ACTIVE, ACTIVE);
(void) system(cbuf);
if (rwaccess(ACTIVE))
fprintf(mfd, "The problem has been taken care of.\n");
else
fprintf(mfd, "Corrective action failed - check suid bits.\n");
(void) mclose(mfd);
}
}
SigTrap = FALSE; /* true if a signal has been caught */
if (mode != PROC) {
(void) signal(SIGHUP, onsig);
(void) signal(SIGINT, onsig);
}
savmask = umask(N_UMASK); /* set up mask */
uid = getuid();
gid = getgid();
duid = geteuid();
dgid = getegid();
if (uid == 0 && duid == 0) {
/*
* Must go through with this kludge since
* some systems do not honor the setuid bit
* when root invokes a setuid program.
*/
if ((pw = getpwnam(NEWSUSR)) == NULL)
xerror("Cannot get NEWSU pw entry");
duid = pw->pw_uid;
if ((gp = getgrnam(NEWSGRP)) == NULL)
xerror("Cannot get NEWSG gr entry");
dgid = gp->gr_gid;
(void) setgid(dgid);
(void) setuid(duid);
}
#ifndef IHCC
/*
* We force the use of 'getuser()' to prevent forgery of articles
* by just changing $LOGNAME
*/
if (isatty(fileno(stderr))) {
if ((user = getenv("USER")) == NULL)
user = getenv("LOGNAME");
if ((home = getenv("HOME")) == NULL)
home = getenv("LOGDIR");
}
#endif
if (user == NULL || home == NULL)
getuser();
else {
if (username == NULL || username[0] == 0) {
username = AllocCpy(user);
}
userhome = AllocCpy(home);
}
getuser();
/* loop once per arg. */
++argv; /* skip first arg, which is prog name. */
while (--argc) {
if (state == OPTION) {
if (**argv != '-') {
xerror("Bad option string \"%s\"", *argv);
}
while (*++*argv != '\0') {
for (optpt = options; optpt->optlet != '\0'; ++optpt) {
if (optpt->optlet == **argv)
goto found;
}
/* unknown option letter */
usage:
fprintf(stderr, "usage: inews -t title");
fprintf(stderr, " [ -n newsgroups ]");
fprintf(stderr, " [ -e expiration date ]\n");
fprintf(stderr, "\t[ -f sender]\n\n");
xxit(1);
found:;
if (optpt->flag == TRUE || (mode != UNKNOWN &&
(mode&optpt->oldmode) == 0)) {
xerror("Bad %c option", **argv);
}
if (mode == UNKNOWN)
mode = optpt->newmode;
filchar = optpt->filchar;
optpt->flag = TRUE;
state = STRING;
ptr = optpt->buf;
len = BUFLEN;
}
argv++; /* done with this option arg. */
} else {
/*
* Pick up a piece of a string and put it into
* the appropriate buffer.
*/
if (**argv == '-') {
state = OPTION;
argc++; /* uncount this arg. */
continue;
}
if ((tlen = strlen(*argv)) >= len)
xerror("Argument string too long");
(void) strcpy(ptr, *argv++);
ptr += tlen;
if (*(ptr-1) != filchar)
*ptr++ = filchar;
len -= tlen + 1;
*ptr = '\0';
}
}
/*
* ALL of the command line has now been processed. (!)
*/
tty = isatty(fileno(stdin));
/* This code is really intended to be replaced by the control message. */
if (mode == CANCEL) {
char *p; FILE *f;
f = xfopen(filename, "r");
(void) hread(&header, f, TRUE);
p = index(header.path, ' ');
if (p != NULL)
*p = 0;
p = header.path;
if (strncmp(username, p, strlen(username))
&& uid != ROOTID && uid != geteuid() && uid)
xerror("Not contributor");
cancel();
xxit(0);
}
if (*header.nbuf) {
lcase(header.nbuf);
ptr = index(header.nbuf, '\0');
if (ptr[-1] == NGDELIM)
*--ptr = '\0';
}
(void) nstrip(header.title);
(void) nstrip(header.expdate);
(void) nstrip(header.followid);
if (mode != PROC) {
getident(&header);
if (hflag) {
header.path[0] = '\0';
(void) hread(&header, stdin, FALSE);
/* there are certain fields we won't let him specify. */
if (header.from[0])
(void) strcpy(forgedname, header.from);
if (!header.approved[0])
Mflag = FALSE;
header.from[0] = '\0';
header.subdate[0] = '\0';
header.sender[0] = '\0';
}
#ifdef MYORG
if (header.organization[0] == '\0' && !Mflag) {
strncpy(header.organization, MYORG, BUFLEN);
if (strncmp(header.organization, "Frobozz", 7) == 0)
header.organization[0] = '\0';
if (ptr = getenv("ORGANIZATION"))
strncpy(header.organization, ptr, BUFLEN);
/*
* Note that the organization can also be turned off by
* setting it to the null string, either in MYORG or
* $ORGANIZATION in the environment.
*/
if (header.organization[0] == '/') {
mfd = fopen(header.organization, "r");
if (mfd) {
(void) fgets(header.organization, sizeof header.organization, mfd);
(void) fclose(mfd);
} else {
header.organization[0] = '\0';
logerr("Couldn't open %s",
header.organization);
}
ptr = index(header.organization, '\n');
if (ptr)
*ptr = '\0';
}
}
#endif /* MYORG */
if (forgedname[0]) {
register char *p1;
if (Mflag)
sprintf(header.path, "%s!%s",
FULLSYSNAME, username);
else if (!header.path[0]) {
(void) strcpy(header.path, forgedname);
if ((p1 = strpbrk(header.path, "@ (<")) != NULL)
*p1 = '\0';
}
if (!Mflag && !strpbrk(forgedname, "@ (<"))
(void) sprintf(header.from,"%s@%s%s",
forgedname, FULLSYSNAME, MYDOMAIN);
else
(void) strncpy(header.from, forgedname, BUFLEN);
(void) sprintf(header.sender, "%s@%s%s",
username, FULLSYSNAME, MYDOMAIN);
} else {
gensender(&header, username);
}
}
/* Authorize newsgroups. */
if (mode == PROC) {
#ifdef BATCH
checkbatch();
#endif /* BATCH */
(void) signal(SIGHUP, SIG_IGN);
(void) signal(SIGINT, SIG_IGN);
(void) signal(SIGQUIT, SIG_IGN);
header.ident[0] = '\0';
if (hread(&header, stdin, TRUE) == NULL)
xerror("Inbound news is garbled");
input();
if (history(&header)) {
log("Duplicate article %s rejected. Path: %s",
header.ident, header.path);
xxit(0);
}
}
/* Easy way to make control messages, since all.all.ctl is unblessed */
if (mode != PROC && prefix(header.title, "cmsg ") && header.ctlmsg[0] == 0)
(void) strcpy(header.ctlmsg, &header.title[5]);
is_ctl = mode != CREATENG &&
(ngmatch(header.nbuf, "all.all.ctl,") || header.ctlmsg[0]);
#ifdef DEBUG
fprintf(stderr,"is_ctl set to %d\n", is_ctl);
#endif
/* Must end in comma (NGDELIM) */
#define MODGROUPS "mod.all,all.mod,all.announce,"
if (ngmatch(header.nbuf, MODGROUPS) && !header.approved[0]) {
mfd = mailhdr(&header, "Moderated newsgroup");
if (mfd) {
fprintf(mfd, "This newsgroup is moderated, and cannot be posted to directly.\n");
fprintf(mfd, "Please mail your article to the moderator for posting.\n");
hwrite(&header, mfd);
if (infp)
while ((i = getc(infp)) != EOF)
putc(i, mfd);
(void) mclose(mfd);
}
xerror("Unapproved moderated newsgroup.");
}
if (mode != CREATENG) {
if (!*header.title)
xerror("No title, ng %s from %s", header.nbuf,
header.from);
if (!*header.nbuf)
(void) strcpy(header.nbuf, DFLTNG);
}
if (mode <= UNPROC) {
#ifdef FASCIST
if (uid && uid != ROOTID && fascist(user, header.nbuf))
xerror("User %s is not authorized to post to newsgroup %s", user, header.nbuf);
#endif /* FASCIST */
ctlcheck();
}
if (mode == CREATENG)
createng();
/* Determine input. */
if (mode != PROC)
input();
/* Do the actual insertion. */
insert();
}
/*
* Create a newsgroup
*/
createng()
{
/*
* Only certain users are allowed to create newsgroups
*/
if (uid != ROOTID && uid != geteuid() && uid) {
fprintf(stderr, "Please contact one of the local netnews people\n\tto create this group for you");
xxit(1);
}
(void) sprintf(bfr, "%s/inews -n %s.ctl -t cmsg newgroup %s -d local",
LIB, header.nbuf, header.nbuf);
printf("Please type in a paragraph describing the new newsgroup.\n");
printf("End with control D as usual.\n");
printf("%s\n", bfr);
(void) fflush(stdout);
(void) system(bfr);
exit(0);
/*NOTREACHED*/
}
char firstbufname[BUFLEN];
/*
* Link ARTICLE into dir for ngname and update active file.
*/
long
localize(ngname)
char *ngname;
{
char afline[BUFLEN];
long ngsize;
long fpos;
int e;
char *cp;
lock();
actfp = xfopen(ACTIVE, "r+");
for(;;) {
fpos = ftell(actfp);
if (fgets(afline, sizeof afline, actfp) == NULL) {
unlock();
(void) fclose(actfp);
logerr("Can't fine \"%s\" in active file", ngname);
return FALSE; /* No such newsgroup locally */
}
if (prefix(afline, ngname)) {
(void) sscanf(afline, "%s %ld", bfr, &ngsize);
if (strcmp(bfr, ngname) == 0) {
if (ngsize < 0 || ngsize > 99998) {
logerr("found bad ngsize %ld ng %s, setting to 1", ngsize, bfr);
ngsize = 1;
}
break;
}
}
}
for (;;) {
cp = dirname(ngname);
if (!exists(cp))
mknewsg(cp, ngname);
(void) sprintf(bfr, "%s/%ld", cp, ngsize+1);
#ifdef VMS
if (vmslink(ARTICLE, bfr) == 0)
break;
#else /* !VMS */
if (link(ARTICLE, bfr) == 0)
break;
#endif /* !VMS */
e = errno; /* keep log from clobbering it */
log("Cannot install article as %s: %s", bfr, errmsg(errno));
if (e != EEXIST) {
logerr("Link into %s failed (%s); check dir permissions.",
bfr, errmsg(e));
unlock();
(void) fclose(actfp);
return FALSE;
}
ngsize++;
}
(void) fflush(actfp);
#ifdef VMS
(void) fclose(actfp);
vmstounix(ACTIVE);
actfp = fopen(ACTIVE, "r+");
#endif /* VMS */
/*
* This works around a bug in the 4.1bsd stdio
* on fseeks to non even offsets in r+w files
*/
if (fpos&1)
(void) rewind(actfp);
(void) fseek(actfp, fpos, 0);
/* Has to be same size as old because of %05d.
* This will overflow with 99999 articles.
*/
fprintf(actfp, "%s %05ld", ngname, ngsize+1);
if (ferror(actfp))
xerror("Active file write failed");
(void) fclose(actfp);
#ifdef VMS
unixtovms(ACTIVE);
#endif /* VMS */
unlock();
if (firstbufname[0] == '\0')
(void) strcpy(firstbufname, bfr);
(void) sprintf(bfr, "%s/%ld ", ngname, ngsize+1);
addhist(bfr);
return ngsize+1;
}
/*
* Localize for each newsgroup and broadcast.
*/
insert()
{
register char *ptr;
register FILE *tfp;
register int c;
struct srec srec; /* struct for sys file lookup */
struct tm *tm;
int is_invalid = FALSE;
int exitcode = 0;
long now;
#ifdef DOXREFS
register char *nextref = header.xref;
#endif /* DOXREFS */
/* Fill up the rest of header. */
if (mode != PROC) {
history(&header);
}
dates(&header);
(void) time(&now);
tm = localtime(&now);
if (header.expdate[0])
addhist(" ");
#ifdef USG
sprintf(bfr,"%2.2d/%2.2d/%d %2.2d:%2.2d\t",
#else /* !USG */
sprintf(bfr,"%02d/%02d/%d %02d:%02d\t",
#endif /* !USG */
tm->tm_mon+1, tm->tm_mday, tm->tm_year,tm->tm_hour, tm->tm_min);
addhist(bfr);
log("%s %s ng %s subj '%s' from %s",
mode==PROC ? "received" : "posted",
header.ident, header.nbuf, header.title, header.from);
/* Clean up Newsgroups: line */
if (!is_ctl && mode != CREATENG)
is_invalid = ngfcheck(mode == PROC);
/* Write article to temp file. */
tfp = xfopen(mktemp(ARTICLE), "w");
if (is_invalid) {
logerr("No valid newsgroups found, moved to junk");
if (localize("junk"))
savehist(histline);
exitcode = 1;
goto writeout;
}
if (time((time_t *)0) > (cgtdate(header.subdate) + HISTEXP) ){
logerr("Article too old, moved to junk");
if (localize("junk"))
savehist(histline);
exitcode = 1;
goto writeout;
}
if (is_ctl) {
exitcode = control(&header);
if (localize("control") && exitcode != 0)
savehist(histline);
} else {
if (s_find(&srec, FULLSYSNAME) == FALSE) {
logerr("Cannot find my name '%s' in %s", FULLSYSNAME, SUBFILE);
srec = dummy_srec;
}
#ifdef DOXREFS
(void) strncpy(nextref, FULLSYSNAME, BUFLEN);
#endif /* DOXREFS */
for (ptr = nbuf; *ptr;) {
if (ngmatch(ptr,srec.s_nbuf) || index(ptr,'.') == NULL){
#ifdef DOXREFS
while (*nextref++)
;
(void) sprintf(--nextref, " %s:%ld", ptr, localize(ptr));
#else /* !DOXREFS */
(void) localize(ptr);
#endif /* !DOXREFS */
}
while (*ptr++)
;
}
if (firstbufname[0] == '\0') {
logerr("Newsgroups in active, but not sys");
(void) localize("junk");
}
}
#ifdef DOXREFS
if (index(header.nbuf, NGDELIM) == NULL)
header.xref[0] = '\0';
#endif /* DOXREFS */
writeout:
/* Part 1 of kludge to get around article truncation problem */
if ( (c=getc(infp)) != EOF) {
ungetc(c, infp);
if (c == ' ' || c == '\t') {
header.intnumlines++;
(void) sprintf(header.numlines, "%d",
header.intnumlines);
}
}
/* End of part 1 */
lhwrite(&header, tfp);
if ((c = getc(infp)) != EOF) {
/* Part 2 of kludge to get around article truncation problem */
if (c == ' ' || c == '\t' )
putc('\n', tfp);
/* End of part 2 */
ungetc(c, infp);
while (fgets(bfr, BUFLEN, infp) != NULL)
fputs(bfr, tfp);
if (bfr[strlen(bfr)-1] != '\n')
putc('\n',tfp);
}
if (ferror(tfp))
xerror("Write failed for temp file");
(void) fclose(tfp);
(void) fclose(infp);
if(exitcode == 0) {
int pid;
/* article has passed all the checks, so work in background */
if (mode != PROC)
if ((pid=fork()) < 0)
xerror("Can't fork");
else if (pid > 0)
exit(0);
#ifdef SIGTTOU
signal(SIGTTOU, SIG_IGN);
#endif /* SIGTTOU */
savehist(histline);
broadcast();
}
xxit(mode == PROC ? 0 : exitcode);
}
input()
{
register char *cp;
register int c;
register int empty = TRUE;
FILE *tmpfp;
int consec_newlines = 0;
int linecount = 0;
int linserted = 0;
tmpfp = xfopen(mktemp(INFILE), "w");
if (*filename) {
tty = FALSE;
infp = xfopen(filename, "r");
} else {
infp = stdin;
}
while (!SigTrap && fgets(bfr, BUFLEN, stdin) != NULL) {
if (mode == PROC) { /* zap trailing empty lines */
#ifdef ZAPNOTES
if (empty && bfr[0] == '#' && bfr[2] == ':'
&& header.nf_id[0] == '\0'
&& header.nf_from[0] == '\0' ) {
(void) strcpy(header.nf_id, bfr);
(void) nstrip(header.nf_id);
(void) fgets(bfr, BUFLEN, stdin);
(void) strcpy(header.nf_from, bfr);
(void) nstrip(header.nf_from);
(void) fgets(bfr, BUFLEN, stdin);
if (header.numlines[0]) {
header.intnumlines -= 2;
(void) sprintf(header.numlines, "%d", header.intnumlines);
}
/* Strip trailing " - (nf)" */
if ((cp = rindex(header.title, '-')) != NULL
&& !strcmp(--cp, " - (nf)"))
*cp = '\0';
log("Stripped notes header on %s", header.ident);
continue;
}
#endif /* ZAPNOTES */
if (bfr[0] == '\n' ||
/* Bandage for older versions of inews */
bfr[1] == '\n' && !isascii(bfr[0])) {
consec_newlines++; /* count it, in case */
continue; /* but don't write it*/
}
/* foo! a non-empty line. write out all saved lines. */
while (consec_newlines > 0) {
putc('\n', tmpfp);
consec_newlines--;
linecount++;
}
}
if (mode != PROC && tty && strcmp(bfr, ".\n") == 0)
break;
for (cp = bfr; c = toascii(*cp); cp++) {
if (isprint(c) || isspace(c) || c == '\b')
putc(c, tmpfp);
if (c == '\n')
linecount++;
}
if (bfr[0] == '>')
linserted++;
empty = FALSE;
}
if (*filename)
(void) fclose(infp);
if (mode != PROC && linserted > (linecount-linserted))
xerror("Article rejected: More included text than new text");
if (mode != PROC && !is_ctl && header.sender[0] == '\0') {
int siglines = 0;
char sbuf[BUFLEN];
(void) sprintf(bfr, "%s/%s", userhome, ".signature");
if (access(bfr, 4) == 0) {
if ((infp = fopen(bfr, "r")) == NULL) {
(void) fprintf(stderr,
"inews: \"%s\" left off (must be readable by \"inews\" owner)\n", bfr);
goto finish;
}
while (fgets(sbuf, sizeof sbuf, infp) != NULL)
if (++siglines > 4)
break;
if (siglines > 4)
fprintf(stderr,".signature not included (> 4 lines)\n");
else {
rewind(infp);
fprintf(tmpfp, "-- \n"); /* To separate */
linecount++;
while ((c = getc(infp)) != EOF) {
putc(c, tmpfp);
if (c == '\n')
linecount++;
}
}
(void) fclose(infp);
}
}
finish:
if (ferror(tmpfp))
xerror("write failed to temp file");
(void) fclose(tmpfp);
if (SigTrap) {
if (tty)
fprintf(stderr, "Interrupt\n");
if (tty && !empty)
fwait(fsubr(newssave, (char *) NULL, (char *) NULL));
if (!tty)
log("Blown away by an interrupt %d", SigTrap);
xxit(1);
}
if (tty)
fprintf(stderr, "EOT\n");
fflush(stdout);
infp = fopen(INFILE, "r");
if (header.numlines[0]) {
/*
* Check line count if there's already one attached to
* the article. Could make this a fatal error -
* throwing it away if it got chopped, in hopes that
* another copy will come in later with a correct
* line count. But that seems a bit much for now.
*/
if (linecount != header.intnumlines) {
if (linecount == 0)
xerror("%s rejected. linecount expected %d, got 0", header.ident, header.intnumlines);
if (linecount > header.intnumlines ||
linecount+consec_newlines < header.intnumlines)
log("linecount expected %d, got %d", header.intnumlines, linecount+consec_newlines);
}
/* adjust count for blank lines we stripped off */
if (consec_newlines) {
header.intnumlines -= consec_newlines;
if (header.intnumlines < 0 )
header.intnumlines = 0; /* paranoia */
(void) sprintf(header.numlines, "%d", header.intnumlines);
}
} else {
/* Attach a line count to the article. */
header.intnumlines = linecount;
(void) sprintf(header.numlines, "%d", linecount);
}
}
/*
* Make the directory for a new newsgroup. ngname should be the
* full pathname of the directory. Do the other stuff too.
* The various games with setuid and chown are to try to make sure
* the directory is owned by NEWSUSR and NEWSGRP, which is tough to
* do if you aren't root. This will work on a UCB system (which allows
* setuid(geteuid()) or a USG system (which allows you to give away files
* you own with chown), otherwise you have to change your kernel to allow
* one of these things or run with your dirs 777 so that it doesn't matter
* who owns them.
*/
mknewsg(fulldir, ngname)
char *fulldir;
char *ngname;
{
#ifdef USG
register char *p;
char parent[200];
char sysbuf[200];
struct stat sbuf;
#endif /* USG */
if (ngname == NULL || !isalpha(ngname[0]))
xerror("Tried to make illegal newsgroup %s", ngname);
#ifdef USG
/*
* If the parent is 755 the setuid(getuid)
* will fail, and since mkdir is suid, and our real uid is random,
* the mkdir will fail. So we have to temporarily chmod it to 777.
*/
(void) strcpy(parent, fulldir);
while (p = rindex(parent, '/')) {
*p = '\0';
if (stat(parent, &sbuf) == 0) {
(void) chmod(parent, 0777);
break;
}
}
#endif /* USG */
/* Create the directory */
mkparents(fulldir);
if (mkdir(fulldir, 0777) < 0)
xerror("Cannot mkdir %s: %s", fulldir, errmsg(errno));
#ifdef USG
(void) chmod(parent, (int)sbuf.st_mode); /* put it back */
/*
* Give away the directories we just created which were assigned
* our real uid.
*/
(void) setuid(uid);
(void) chown(fulldir, duid, dgid);
(void) strcpy(sysbuf, fulldir);
while (p = rindex(sysbuf, '/')) {
*p = '\0';
/* stop when get to last known good parent */
if (strcmp(sysbuf, parent) == 0)
break;
(void) chown(sysbuf, duid, dgid);
}
(void) setuid(duid);
#endif /* USG */
log("make newsgroup %s in dir %s", ngname, fulldir);
}
/*
* If any parent directories of this dir don't exist, create them.
*/
mkparents(dname)
char *dname;
{
char buf[200];
register char *p;
(void) strcpy(buf, dname);
p = rindex(buf, '/');
if (p)
*p = '\0';
if (exists(buf))
return;
mkparents(buf);
if (mkdir(buf, 0777) < 0)
xerror("Can not mkdir %s: %s", buf, errmsg(errno));
}
cancel()
{
register FILE *fp;
log("cancel article %s", filename);
fp = fopen(filename, "r");
if (fp == NULL) {
log("article %s not found", filename);
return;
}
if (hread(&header, fp, TRUE) == NULL)
xerror("Article is garbled.");
(void) fclose(fp);
(void) unlink(filename);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.