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lpc/cmds.c:

Browse Source 
From NetBSD via OpenBSD to fix NetBSD PR #506
	More descriptive message for printer status
	(OpenBSD: 1.2)

	Various warnings cleaned up (OpenBSD: 1.4)

lpc/lpc.c:
	Various warnings cleaned up (OpenBSD: 1.3)

lpd/lpd.c:
	Remove trailing blank lines (OpenBSD: 1.2)

	Potential umask problem with creating /dev/printer
	(OpenBSD: 1.4 and 1.5)

	Ftp bounce attack (untested on FreeBSD)
	(OpenBSD: 1.6, 1.8, 1.9)
	Fencepost in strncpy
	(OpenBSD: 1.6)

lpd/printjob.c:
	Fix from freebsd for waiting for an exiting filter, that
	appears not in the FreeBSD CVS tree.
	(OpenBSD: 1.6)

lpd/recvjob.c:
	Buffer overflow protection: use strncpy rather than strcpy.
	(OpenBSD: 1.3)

lpr/lpr.c:
	NetBSD change of return type for main()
	(OpenBSD: 1.2)

	Restrict time running as root
	(OpenBSD: 1.7)

	Use getcwd rather than getwd (from NetBSD)

	Use snprintf rather than sprintf
	(OpenBSD: 1.8)

	Minor tweak to end of loop and buffer overflow sanity.  card()
	overflow already in FreeBSD
	(OpenBSD: 1.9)

lptest/lptest.c:
	void -> int return type of main, from NetBSD via OpenBSD
	(OpenBSD: 1.2)

pac/pac.c:
	void -> int return type of main, from NetBSD via OpenBSD
	(OpenBSD: 1.3)

Obtained from: OpenBSD
This commit is contained in:
Warner Losh 1996-10-27 03:06:52 +00:00
parent 9c91ce9853
commit bc407914f9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=19202
10 changed files with 57 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
usr.sbin/lpr/common_source/recvjob.c
View File

@ -170,7 +170,8 @@ readjob()
* returns
*/
strcpy(cp + 6, from);
strcpy(tfname, cp);
strncpy(tfname, cp, sizeof tfname-1);
tfname[sizeof tfname-1] = '\0';
tfname[0] = 't';
if (!chksize(size)) {
(void) write(1, "\2", 1);
@ -197,7 +198,8 @@ readjob()
(void) write(1, "\2", 1);
continue;
}
(void) strcpy(dfname, cp);
(void) strncpy(dfname, cp, sizeof dfname-1);
dfname[sizeof dfname-1] = '\0';
if (index(dfname, '/'))
frecverr("readjob: %s: illegal path name",
dfname);

8
usr.sbin/lpr/lpc/cmds.c
View File

@ -277,7 +277,7 @@ sortq(a, b)
d1 = (struct dirent **)a;
d2 = (struct dirent **)b;
if (c1 = strcmp((*d1)->d_name + 3, (*d2)->d_name + 3))
if ((c1 = strcmp((*d1)->d_name + 3, (*d2)->d_name + 3)))
return(c1);
c1 = (*d1)->d_name[0];
c2 = (*d2)->d_name[0];
@ -305,7 +305,7 @@ cleanpr()
SD = _PATH_DEFSPOOL;
printf("%s:\n", printer);
for (lp = line, cp = SD; *lp++ = *cp++; )
for (lp = line, cp = SD; (*lp++ = *cp++); )
;
lp[-1] = '/';
@ -592,7 +592,7 @@ putmsg(argc, argv)
cp1 = buf;
while (--argc >= 0) {
cp2 = *argv++;
while (*cp1++ = *cp2++)
while ((*cp1++ = *cp2++))
;
cp1[-1] = ' ';
}
@ -815,7 +815,7 @@ prstat()
fd = open(line, O_RDONLY);
if (fd < 0 || flock(fd, LOCK_SH|LOCK_NB) == 0) {
(void) close(fd); /* unlocks as well */
printf("\tno daemon present\n");
printf("\tprinter idle\n");
return;
}
(void) close(fd);

2
usr.sbin/lpr/lpc/lpc.c
View File

@ -178,7 +178,7 @@ getcmd(name)
longest = 0;
nmatches = 0;
found = 0;
for (c = cmdtab; p = c->c_name; c++) {
for (c = cmdtab; (p = c->c_name); c++) {
for (q = name; *q == *p++; q++)
if (*q == 0) /* exact match? */
return(c);

38
usr.sbin/lpr/lpd/lpd.c
View File

@ -179,6 +179,7 @@ main(argc, argv)
}
#define mask(s) (1 << ((s) - 1))
omask = sigblock(mask(SIGHUP)|mask(SIGINT)|mask(SIGQUIT)|mask(SIGTERM));
(void) umask(07);
signal(SIGHUP, mcleanup);
signal(SIGINT, mcleanup);
signal(SIGQUIT, mcleanup);
@ -193,6 +194,7 @@ main(argc, argv)
syslog(LOG_ERR, "ubind: %m");
exit(1);
}
(void) umask(0);
sigsetmask(omask);
FD_ZERO(&defreadfds);
FD_SET(funix, &defreadfds);
@ -245,6 +247,10 @@ main(argc, argv)
domain = AF_INET, fromlen = sizeof(frominet);
s = accept(finet,
(struct sockaddr *)&frominet, &fromlen);
if (frominet.sin_port == htons(20)) {
close(s);
continue;
}
}
if (s < 0) {
if (errno != EINTR)
@ -494,9 +500,11 @@ chkhost(f)
register struct hostent *hp;
register FILE *hostf;
int first = 1;
int good = 0;
f->sin_port = ntohs(f->sin_port);
if (f->sin_family != AF_INET || f->sin_port >= IPPORT_RESERVED)
if (f->sin_family != AF_INET || f->sin_port >= IPPORT_RESERVED ||
f->sin_port == htons(20))
fatal("Malformed from address");
/* Need real hostname for temporary filenames */
@ -506,10 +514,24 @@ chkhost(f)
fatal("Host name for your address (%s) unknown",
inet_ntoa(f->sin_addr));
(void) strncpy(fromb, hp->h_name, sizeof(fromb));
(void) strncpy(fromb, hp->h_name, sizeof(fromb) - 1);
from[sizeof(fromb) - 1] = '\0';
from = fromb;
/* Check for spoof, ala rlogind */
hp = gethostbyname(fromb);
if (!hp)
fatal("hostname for your address (%s) unknown",
inet_ntoa(f->sin_addr));
for (; good == 0 && hp->h_addr_list[0] != NULL; hp->h_addr_list++) {
if (!bcmp(hp->h_addr_list[0], (caddr_t)&f->sin_addr,
sizeof(f->sin_addr)))
good = 1;
}
if (good == 0)
fatal("address for your hostname (%s) not matched",
inet_ntoa(f->sin_addr));
hostf = fopen(_PATH_HOSTSEQUIV, "r");
again:
if (hostf) {
@ -528,15 +550,3 @@ chkhost(f)
fatal("Your host does not have line printer access");
/*NOTREACHED*/
}

2
usr.sbin/lpr/lpd/printjob.c
View File

@ -288,6 +288,8 @@ printjob()
if (TR != NULL) /* output trailer */
(void) write(ofd, TR, strlen(TR));
}
(void) close(ofd);
(void) wait(NULL);
(void) unlink(tempfile);
exit(0);
}

6
usr.sbin/lpr/lpd/recvjob.c
View File

@ -170,7 +170,8 @@ readjob()
* returns
*/
strcpy(cp + 6, from);
strcpy(tfname, cp);
strncpy(tfname, cp, sizeof tfname-1);
tfname[sizeof tfname-1] = '\0';
tfname[0] = 't';
if (!chksize(size)) {
(void) write(1, "\2", 1);
@ -197,7 +198,8 @@ readjob()
(void) write(1, "\2", 1);
continue;
}
(void) strcpy(dfname, cp);
(void) strncpy(dfname, cp, sizeof dfname-1);
dfname[sizeof dfname-1] = '\0';
if (index(dfname, '/'))
frecverr("readjob: %s: illegal path name",
dfname);

27
usr.sbin/lpr/lpr/lpr.c
View File

@ -45,7 +45,7 @@ static char copyright[] =
#ifndef lint
static char sccsid[] = "From: @(#)lpr.c 8.4 (Berkeley) 4/28/95"
"\n$Id: lpr.c,v 1.8 1996/10/25 18:14:48 imp Exp $\n";
"\n$Id: lpr.c,v 1.9 1996/10/26 00:46:34 imp Exp $\n";
#endif /* not lint */
/*
@ -113,7 +113,7 @@ static int nfile __P((char *));
static int test __P((char *));
static void usage __P((void));
void
int
main(argc, argv)
int argc;
char *argv[];
@ -272,7 +272,7 @@ main(argc, argv)
/*
* Check to make sure queuing is enabled if userid is not root.
*/
(void) sprintf(buf, "%s/%s", SD, LO);
(void) snprintf(buf, sizeof(buf), "%s/%s", SD, LO);
if (userid && stat(buf, &stb) == 0 && (stb.st_mode & 010))
fatal2("Printer queue is disabled");
/*
@ -321,7 +321,8 @@ main(argc, argv)
continue; /* file unreasonable */
if (sflag && (cp = linked(arg)) != NULL) {
(void) sprintf(buf, "%d %d", statb.st_dev, statb.st_ino);
(void) snprintf(buf, sizeof(buf), "%d %d", statb.st_dev,
statb.st_ino);
card('S', buf);
if (format == 'p')
card('T', title ? title : arg);
@ -339,12 +340,12 @@ main(argc, argv)
printf("%s: %s: not linked, copying instead\n", name, arg);
if ((i = open(arg, O_RDONLY)) < 0) {
printf("%s: cannot open %s\n", name, arg);
continue;
} else {
copy(i, arg);
(void) close(i);
if (f && unlink(arg) < 0)
printf("%s: %s: not removed\n", name, arg);
}
copy(i, arg);
(void) close(i);
if (f && unlink(arg) < 0)
printf("%s: %s: not removed\n", name, arg);
}
if (nact) {
@ -434,7 +435,7 @@ linked(file)
static char buf[BUFSIZ];
if (*file != '/') {
if (getwd(buf) == NULL)
if (getcwd(buf,sizeof(buf)) == NULL)
return(NULL);
while (file[0] == '.') {
switch (file[1]) {
@ -693,7 +694,7 @@ mktemps()
register char *cp;
char buf[BUFSIZ];
(void) sprintf(buf, "%s/.seq", SD);
(void) snprintf(buf, sizeof(buf), "%s/.seq", SD);
if ((fd = open(buf, O_RDWR|O_CREAT, 0661)) < 0) {
printf("%s: cannot create %s\n", name, buf);
exit(1);
@ -717,7 +718,7 @@ mktemps()
inchar = strlen(SD) + 3;
n = (n + 1) % 1000;
(void) lseek(fd, (off_t)0, 0);
sprintf(buf, "%03d\n", n);
snprintf(buf, sizeof(buf), "%03d\n", n);
(void) write(fd, buf, strlen(buf));
(void) close(fd); /* unlocks as well */
}
@ -734,7 +735,7 @@ lmktemp(id, num, len)
if ((s = malloc(len)) == NULL)
fatal2("out of memory");
(void) sprintf(s, "%s/%sA%03d%s", SD, id, num, host);
(void) snprintf(s, len, "%s/%sA%03d%s", SD, id, num, host);
return(s);
}

2
usr.sbin/lpr/lptest/lptest.c
View File

@ -48,7 +48,7 @@ static char sccsid[] = "@(#)lptest.c 8.1 (Berkeley) 6/6/93";
/*
* lptest -- line printer test program (and other devices).
*/
void
int
main(argc, argv)
int argc;
char **argv;

2
usr.sbin/lpr/pac/pac.c
View File

@ -98,7 +98,7 @@ static struct hent *lookup __P((char []));
static int qucmp __P((const void *, const void *));
static void rewrite __P((void));
void
int
main(argc, argv)
int argc;
char **argv;

2
usr.sbin/lpr/runqueue/printjob.c
View File

@ -288,6 +288,8 @@ printjob()
if (TR != NULL) /* output trailer */
(void) write(ofd, TR, strlen(TR));
}
(void) close(ofd);
(void) wait(NULL);
(void) unlink(tempfile);
exit(0);
}