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Be extra paranoid about trusting the length returned by gethostbyaddr.

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Submitted by:	Julian Assange
This commit is contained in:
Warner Losh 1997-12-24 00:58:39 +00:00
parent 9ae323c5f0
commit 164309e22e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=31955
1 changed files with 3 additions and 3 deletions
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6
sbin/mount_nfs/mount_nfs.c
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@ -45,7 +45,7 @@ static char copyright[] =
static char sccsid[] = "@(#)mount_nfs.c 8.11 (Berkeley) 5/4/95";
*/
static const char rcsid[] =
"$Id: mount_nfs.c,v 1.23 1997/06/03 13:49:26 dfr Exp $";
"$Id: mount_nfs.c,v 1.24 1997/10/19 16:40:01 joerg Exp $";
#endif /* not lint */
#include <sys/param.h>
@ -694,7 +694,7 @@ getnfsargs(spec, nfsargsp)
return (0);
}
} else if ((hp = gethostbyname(hostp)) != NULL)
memmove(&saddr.sin_addr, hp->h_addr, hp->h_length);
memmove(&saddr.sin_addr, hp->h_addr, MIN(hp->h_length, sizeof(saddr.sin_addr)));
else {
warnx("can't get net id for host");
return (0);
@ -706,7 +706,7 @@ getnfsargs(spec, nfsargsp)
warnx("can't reverse resolve net address");
return (0);
}
memmove(&saddr.sin_addr, hp->h_addr, hp->h_length);
memmove(&saddr.sin_addr, hp->h_addr, MIN(hp->h_length, sizeof(saddr.sin_addr)));
strncpy(inst, hp->h_name, INST_SZ);
inst[INST_SZ - 1] = '\0';
if (cp = strchr(inst, '.'))