Date: Thu, 15 Oct 1998 20:31:17 GMT From: Jin Guojun (FTG staff) <jin@eubie.lbl.gov> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: bin/8338: ypserv fails to get master name for ypxfr Message-ID: <199810152031.UAA25779@eubie.lbl.gov>
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>Number: 8338
>Category: bin
>Synopsis: ypserv fails to get master name for ypxfr
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Oct 15 13:40:01 PDT 1998
>Last-Modified:
>Originator: Jin Guojun (FTG staff)
>Organization:
>Release: FreeBSD 3.0-19981006-BETA i386
>Environment:
All FreeBSD releases
If use FreeBSD as YP slave server and Solaris as YP master server
(not test other platform as master server yet)
>Description:
ypserv surpose to get master name 131.243.2.200
(rather than localhost name 131.243.2.36 as eubie itself)
The problem seems to be in /usr/src/usr.sbin/ypserv/yp_serv.c
marked "wrong name ??????"
ypresp_master *
ypproc_master_2_svc(ypreq_nokey *argp, struct svc_req *rqstp)
{
static ypresp_master result;
static char ypvalbuf[YPMAXRECORD];
keydat key = { master_sz, master_string };
valdat val;
result.peer = "";
#ifdef DB_CACHE
if (yp_access(argp->map, argp->domain, (struct svc_req *)rqstp)) {
#else
if (yp_access(argp->map, (struct svc_req *)rqstp)) {
#endif
result.stat = YP_YPERR;
return(&result);
}
if (argp->domain == NULL) {
result.stat = YP_BADARGS;
return (&result);
}
if (yp_select_map(argp->map, argp->domain, &key, 1) != YP_TRUE) {
result.stat = yp_errno;
return(&result);
}
/*
* Note that we copy the data retrieved from the database to
* a private buffer and NUL terminate the buffer rather than
* terminating the data in place. We do this because by stuffing
* a '\0' into data.data, we will actually be corrupting memory
* allocated by the DB package. This is a bad thing now that we
* cache DB handles rather than closing the database immediately.
*/
result.stat = yp_getbykey(&key, &val); /* wrong name ?????? */
if (result.stat == YP_TRUE) {
bcopy((char *)val.valdat_val, (char *)&ypvalbuf,
val.valdat_len);
ypvalbuf[val.valdat_len] = '\0';
result.peer = (char *)&ypvalbuf;
} else
result.peer = "";
return (&result);
}
eubie# ypserv -d -n
ypserv: procedure ypproc_xfr called from 131.243.2.200:755
ypserv: client is referencing map "passwd.byname".
ypserv: procedure ypproc_xfr called from 131.243.2.200:755
ypserv: client is referencing map "passwd.byname".
ypserv: looking up key [YP_MASTER_NAME]
ypserv: result of lookup: key: [YP_MASTER_NAME] data: [eubie.lbl.gov]
ypserv: procedure ypproc_master called from 131.243.2.36:761
ypserv: client is referencing map "passwd.byname".
ypserv: looking up key [YP_MASTER_NAME]
ypserv: result of lookup: key: [YP_MASTER_NAME] data: [eubie.lbl.gov]
ypserv: procedure ypproc_order called from 131.243.2.36:758
ypserv: client is referencing map "passwd.byname".
ypserv: looking up key [YP_LAST_MODIFIED]
ypserv: result of lookup: key: [YP_LAST_MODIFIED] data: [908463640]
ypserv: procedure ypproc_match called from 131.243.2.36:756
ypserv: client is referencing map "passwd.byname".
ypserv: looking up key [YP_INTERDOMAIN]
ypserv: procedure ypproc_match called from 131.243.2.36:754
ypserv: client is referencing map "passwd.byname".
ypserv: looking up key [YP_SECURE]
ypserv: procedure ypproc_xfr called from 131.243.2.12:761
ypserv: client is referencing map "passwd.byuid".
ypserv: procedure ypproc_xfr called from 131.243.2.12:761
ypserv: client is referencing map "passwd.byuid".
ypserv: looking up key [YP_MASTER_NAME]
ypserv: result of lookup: key: [YP_MASTER_NAME] data: [eubie.lbl.gov]
ypserv: procedure ypproc_master called from 131.243.2.36:749
ypserv: client is referencing map "passwd.byuid".
ypserv: looking up key [YP_MASTER_NAME]
ypserv: result of lookup: key: [YP_MASTER_NAME] data: [eubie.lbl.gov]
ypserv: procedure ypproc_order called from 131.243.2.36:746
ypserv: client is referencing map "passwd.byuid".
ypserv: looking up key [YP_LAST_MODIFIED]
ypserv: result of lookup: key: [YP_LAST_MODIFIED] data: [908463640]
ypserv: procedure ypproc_match called from 131.243.2.36:744
ypserv: client is referencing map "passwd.byuid".
ypserv: looking up key [YP_INTERDOMAIN]
ypserv: procedure ypproc_match called from 131.243.2.36:742
ypserv: client is referencing map "passwd.byuid".
ypserv: looking up key [YP_SECURE]
>How-To-Repeat:
Just configure a FreeBSD host as YP slave server and use any
other platform (Maybe FreeBSD too) as a master YP server.
Try to yppush from master to slave (in master side, cd /var/yp
enable YPPUSH, and make).
>Fix:
Not clear what is the correct fixing.
I am currently write a wrapper for ypxfr to get a correct
master name just for a temp solution.
>Audit-Trail:
>Unformatted:
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