OpenSolaris_b135/cmd/ypcmd/ypxfr.c
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley
* under license from the Regents of the University of
* California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This is a user command which gets a NIS data base from some running
* server, and gets it to the local site by using the normal NIS client
* enumeration functions. The map is copied to a temp name, then the real
* map is removed and the temp map is moved to the real name. ypxfr then
* sends a "YPPROC_CLEAR" message to the local server to insure that he will
* not hold a removed map open, so serving an obsolete version.
*
* ypxfr [ -h <host> ] [ -d <domainname> ]
* [ -s <domainname> ] [-f] [-c] [-C tid prot name] map
*
* If the host is ommitted, ypxfr will attempt to discover the master by
* using normal NIS services. If it can't get the record, it will use
* the address of the callback, if specified. If the host is specified
* as an internet address, no NIS services need to be locally available.
*
* If the domain is not specified, the default domain of the local machine
* is used.
*
* If the -f flag is used, the transfer will be done even if the master's
* copy is not newer than the local copy.
*
* The -c flag suppresses the YPPROC_CLEAR request to the local ypserv. It
* may be used if ypserv isn't currently running to suppress the error message.
*
* The -C flag is used to pass callback information to ypxfr when it is
* activated by ypserv. The callback information is used to send a
* yppushresp_xfr message with transaction id "tid" to a yppush process
* speaking a transient protocol number "prot". The yppush program is
* running on the host "name".
*
* The -s option is used to specify a source domain which may be
* different from the destination domain, for transfer of maps
* that are identical in different domains (e.g. services.byname)
*
*/
#include <ndbm.h>
#undef NULL
#define DATUM
#include <stdio.h>
#include <errno.h>
#include <time.h>
#include <ctype.h>
#include <netdb.h>
#include <netconfig.h>
#include <netdir.h>
#include <rpc/rpc.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <dirent.h>
#include <rpcsvc/ypclnt.h>
#include <rpcsvc/yp_prot.h>
#include <unistd.h>
#include <stdlib.h>
#include <rpcsvc/nis.h>
#include "ypdefs.h"
#include "yp_b.h"
#include "shim.h"
#include "yptol.h"
USE_YP_MASTER_NAME
USE_YP_SECURE
USE_YP_INTERDOMAIN
USE_YP_LAST_MODIFIED
USE_YPDBPATH
USE_DBM
#define PARANOID 1 /* make sure maps have the right # entries */
#define CALLINTER_TRY 10 /* Seconds between callback tries */
#define CALLTIMEOUT CALLINTER_TRY*6 /* Total timeout for callback */
DBM *db;
/* ypxfr never uses N2L mode */
bool_t yptol_mode = FALSE;
int debug = FALSE;
int treepush = FALSE;
#define TREEPUSH 1
int defwrite = TRUE;
char *domain = NULL;
char *source = NULL;
char *map = NULL;
char *master = NULL;
char *pushhost = NULL;
/*
* The name of the xfer peer as specified as a
* -h option, -C name option or from querying the NIS
*/
struct dom_binding master_server; /* To talk to above */
unsigned int master_prog_vers; /* YPVERS (barfs at YPOLDVERS !) */
char *master_name = NULL; /* Map's master as contained in the map */
unsigned *master_version = NULL; /* Order number as contained in the map */
char *master_ascii_version; /* ASCII order number as contained in the map */
bool fake_master_version = FALSE;
/*
* TRUE only if there's no order number in
* the map, and the user specified -f
*/
bool force = FALSE; /* TRUE iff user specified -f flag */
bool logging = FALSE; /* TRUE iff no tty, but log file exists */
bool check_count = FALSE; /* TRUE causes counts to be checked */
bool send_clear = TRUE; /* FALSE iff user specified -c flag */
bool callback = FALSE;
/*
* TRUE iff -C flag set. tid, proto and name
* will be set to point to the command line args.
*/
bool secure_map = FALSE; /* TRUE if there is yp_secure in the map */
bool interdomain_map = FALSE;
/*
* TRUE if there is yp_interdomain in either
* the local or the master version of the map
*/
int interdomain_sz = 0; /* Size of the interdomain value */
#define UDPINTER_TRY 10 /* Seconds between tries for udp */
#define UDPTIMEOUT UDPINTER_TRY*4 /* Total timeout for udp */
#define CALLINTER_TRY 10 /* Seconds between callback tries */
#define CALLTIMEOUT CALLINTER_TRY*6 /* Total timeout for callback */
struct timeval udp_timeout = { UDPTIMEOUT, 0};
struct timeval tcp_timeout = { 180, 0}; /* Timeout for map enumeration */
char *interdomain_value; /* place to store the interdomain value */
char *tid;
char *proto;
int entry_count; /* counts entries in the map */
char logfile[] = "/var/yp/ypxfr.log";
static char err_usage[] =
"Usage:\n\
ypxfr [-f] [ -h host ] [ -d domainname ]\n\
[ -s domainname ] [-c] [-C tid prot servname ] map\n\n\
where\n\
-f forces transfer even if the master's copy is not newer.\n\
host is the server from where the map should be transfered\n\
-d domainname is specified if other than the default domain\n\
-s domainname is a source for the map that is same across domains\n\
-c inhibits sending a \"Clear map\" message to the local ypserv.\n\
-C is for use only by ypserv to pass callback information.\n";
char err_bad_args[] =
"%s argument is bad.\n";
char err_cant_get_kname[] =
"Can't get %s back from system call.\n";
char err_null_kname[] =
"%s hasn't been set on this machine.\n";
char err_bad_hostname[] = "hostname";
char err_bad_mapname[] = "mapname";
char err_bad_domainname[] = "domainname";
char err_udp_failure[] =
"Can't set up a udp connection to ypserv on host %s.\n";
char yptempname_prefix[] = "ypxfr_map.";
char ypbkupname_prefix[] = "ypxfr_bkup.";
void get_command_line_args();
bool bind_to_server();
bool ping_server();
bool get_private_recs();
bool get_order();
bool get_v1order();
bool get_v2order();
bool get_misc_recs();
bool get_master_name();
bool get_v1master_name();
bool get_v2master_name();
void find_map_master();
bool move_map();
unsigned get_local_version();
void mkfilename();
void mk_tmpname();
bool get_map();
bool add_private_entries();
bool new_mapfiles();
void del_mapfiles();
void set_output();
void logprintf();
bool send_ypclear();
void xfr_exit();
void send_callback();
int ypall_callback();
int map_yperr_to_pusherr();
extern CLIENT *__yp_clnt_create_rsvdport();
bool_t is_yptol_mode();
extern int errno;
/*
* This is the mainline for the ypxfr process.
*/
int
main(argc, argv)
int argc;
char **argv;
{
static char default_domain_name[YPMAXDOMAIN];
static unsigned big = 0xffffffff;
int status;
set_output();
/*
* Inter-process lock synchronization structure. Since slave servers
* get their maps from another NIS server rather than LDAP they can
* never run in N2L mode. We thus do not have to init the update
* locking mechanism.
*/
if (init_lock_map() == FALSE) {
exit(1);
}
get_command_line_args(argc, argv);
if (!domain) {
if (!getdomainname(default_domain_name, YPMAXDOMAIN)) {
domain = default_domain_name;
} else {
logprintf(err_cant_get_kname,
err_bad_domainname);
xfr_exit(YPPUSH_RSRC);
}
if (strlen(domain) == 0) {
logprintf(err_null_kname,
err_bad_domainname);
xfr_exit(YPPUSH_RSRC);
}
}
if (!source)
source = domain;
if (!master) {
find_map_master();
}
/*
* if we were unable to get the master name, either from
* the -h option or from -C "name" option or from NIS,
* we are doomed !
*/
if (!master) {
xfr_exit(YPPUSH_MADDR);
}
if (!bind_to_server(master, &master_server,
&master_prog_vers, &status)) {
xfr_exit(status);
}
if (!get_private_recs(&status)) {
xfr_exit(status);
}
if (!master_version) {
if (force) {
master_version = &big;
fake_master_version = TRUE;
} else {
logprintf(
"Can't get order number for map %s from server at %s: use the -f flag.\n",
map, master);
xfr_exit(YPPUSH_FORCE);
}
}
if (!move_map(&status)) {
xfr_exit(status);
}
if (send_clear && !send_ypclear(&status)) {
xfr_exit(status);
}
if (logging) {
logprintf("Transferred map %s from %s (%d entries).\n",
map, master, entry_count);
}
xfr_exit(YPPUSH_SUCC);
return (0);
/* NOTREACHED */
}
/*
* This decides whether we're being run interactively or not, and, if not,
* whether we're supposed to be logging or not. If we are logging, it sets
* up stderr to point to the log file, and sets the "logging"
* variable. If there's no logging, the output goes in the bit bucket.
* Logging output differs from interactive output in the presence of a
* timestamp, present only in the log file. stderr is reset, too, because it
* it's used by various library functions, including clnt_perror.
*/
void
set_output()
{
if (!isatty(1)) {
if (access(logfile, W_OK)) {
(void) freopen("/dev/null", "w", stderr);
} else {
(void) freopen(logfile, "a", stderr);
logging = TRUE;
}
}
}
/*
* This constructs a logging record.
*/
void
logprintf(arg1, arg2, arg3, arg4, arg5, arg6, arg7)
/*VARARGS*/
{
struct timeval t;
fseek(stderr, 0, 2);
if (logging) {
(void) gettimeofday(&t, NULL);
(void) fprintf(stderr, "%19.19s: ", ctime(&t.tv_sec));
}
(void) fprintf(stderr, (char *)arg1, arg2, arg3, arg4, arg5,
arg6, arg7);
fflush(stderr);
}
/*
* This does the command line argument processing.
*/
void
get_command_line_args(argc, argv)
int argc;
char **argv;
{
argv++;
if (argc < 2) {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
while (--argc) {
if ((*argv)[0] == '-') {
switch ((*argv)[1]) {
case 'f': {
force = TRUE;
argv++;
break;
}
case 'D': {
debug = TRUE;
argv++;
break;
}
case 'T': {
treepush = TRUE;
argv++;
break;
}
case 'P': {
check_count = TRUE;
argv++;
break;
}
case 'W': {
defwrite = FALSE;
argv++;
break;
}
case 'c': {
send_clear = FALSE;
argv++;
break;
}
case 'h': {
if (argc > 1) {
argv++;
argc--;
master = *argv;
argv++;
if (strlen(master) > 256) {
logprintf(
err_bad_args,
err_bad_hostname);
xfr_exit(YPPUSH_BADARGS);
}
} else {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
break;
}
case 'd':
if (argc > 1) {
argv++;
argc--;
domain = *argv;
argv++;
if (strlen(domain) > YPMAXDOMAIN) {
logprintf(
err_bad_args,
err_bad_domainname);
xfr_exit(YPPUSH_BADARGS);
}
} else {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
break;
case 's':
if (argc > 1) {
argv++;
argc--;
source = *argv;
argv++;
if (strlen(source) > YPMAXDOMAIN) {
logprintf(
err_bad_args,
err_bad_domainname);
xfr_exit(YPPUSH_BADARGS);
}
} else {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
break;
case 'C':
if (argc > 3) {
callback = TRUE;
tid = *(++argv);
proto = *(++argv);
pushhost = *(++argv);
if (strlen(pushhost) > 256) {
logprintf(err_bad_args, err_bad_hostname);
xfr_exit(YPPUSH_BADARGS);
}
argc -= 3;
argv++;
} else {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
break;
case 'b': {
interdomain_map = TRUE;
interdomain_value = "";
interdomain_sz = 0;
argv++;
break;
}
default: {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
}
} else {
if (!map) {
map = *argv;
argv++;
if (strlen(map) > YPMAXMAP) {
logprintf(err_bad_args,
err_bad_mapname);
xfr_exit(YPPUSH_BADARGS);
}
} else {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
}
}
if (!map) {
logprintf(err_usage);
xfr_exit(YPPUSH_BADARGS);
}
}
/*
* This tries to get the master name for the named map, from any
* server's version, using the vanilla NIS client interface. If we get a
* name back, the global "master" gets pointed to it.
*/
void
find_map_master()
{
int err;
if (err = __yp_master_rsvdport(source, map, &master)) {
logprintf("Can't get master of %s. Reason: %s.\n", map,
yperr_string(err));
}
yp_unbind(source);
}
#ifdef TREEPUSH
int
chk_treepush(name)
char *name;
{
char inmap[256];
char inkey[256];
int inkeylen;
char *outval;
int outvallen;
int err;
outval = NULL;
inkey[0] = 0;
strcpy(inmap, "ypslaves.");
strcat(inmap, name);
gethostname(inkey, 256);
inkeylen = strlen(inkey);
err = yp_match(source, inmap, inkey, inkeylen, &outval, &outvallen);
yp_unbind(source);
return (err);
}
#endif
/*
* This sets up a udp connection to speak the correct program and version
* to a NIS server. vers is set to YPVERS, doesn't give a damn about
* YPOLDVERS.
*/
bool
bind_to_server(host, pdomb, vers, status)
char *host;
struct dom_binding *pdomb;
unsigned int *vers;
int *status;
{
if (ping_server(host, pdomb, YPVERS, status)) {
*vers = YPVERS;
return (TRUE);
} else
return (FALSE);
}
/*
* This sets up a UDP channel to a server which is assumed to speak an input
* version of YPPROG. The channel is tested by pinging the server. In all
* error cases except "Program Version Number Mismatch", the error is
* reported, and in all error cases, the client handle is destroyed and the
* socket associated with the channel is closed.
*/
bool
ping_server(host, pdomb, vers, status)
char *host;
struct dom_binding *pdomb;
unsigned int vers;
int *status;
{
enum clnt_stat rpc_stat;
if ((pdomb->dom_client = __yp_clnt_create_rsvdport(host, YPPROG, vers,
0, 0, 0)) != 0) {
/*
* if we are on a c2 system, we should only accept data
* from a server which is on a reserved port.
*/
/*
* NUKE this for 5.0DR.
*
* if (issecure() &&
* (pdomb->dom_server_addr.sin_family != AF_INET ||
* pdomb->dom_server_addr.sin_port >= IPPORT_RESERVED)) {
* clnt_destroy(pdomb->dom_client);
* close(pdomb->dom_socket);
* (void) logprintf("bind_to_server: \
* server is not using a privileged port\n");
* *status = YPPUSH_YPERR;
* return (FALSE);
* }
*/
rpc_stat = clnt_call(pdomb->dom_client, YPBINDPROC_NULL,
xdr_void, 0, xdr_void, 0, udp_timeout);
if (rpc_stat == RPC_SUCCESS) {
return (TRUE);
} else {
clnt_destroy(pdomb->dom_client);
if (rpc_stat != RPC_PROGVERSMISMATCH) {
(void) clnt_perror(pdomb->dom_client,
"ypxfr: bind_to_server clnt_call error");
}
*status = YPPUSH_RPC;
return (FALSE);
}
} else {
logprintf("bind_to_server __clnt_create_rsvd error");
(void) clnt_pcreateerror("");
fflush(stderr);
*status = YPPUSH_RPC;
return (FALSE);
}
}
/*
* This gets values for the YP_LAST_MODIFIED and YP_MASTER_NAME keys from the
* master server's version of the map. Values are held in static variables
* here. In the success cases, global pointer variables are set to point at
* the local statics.
*/
bool
get_private_recs(pushstat)
int *pushstat;
{
static char anumber[20];
static unsigned number;
static char name[YPMAXPEER + 1];
int status;
status = 0;
if (get_order(anumber, &number, &status)) {
master_version = &number;
master_ascii_version = anumber;
if (debug) fprintf(stderr,
"ypxfr: Master Version is %s\n", master_ascii_version);
} else {
if (status != 0) {
*pushstat = status;
if (debug) fprintf(stderr,
"ypxfr: Couldn't get map's master version number, \
status was %d\n", status);
return (FALSE);
}
}
if (get_master_name(name, &status)) {
master_name = name;
if (debug) fprintf(stderr,
"ypxfr: Maps master is '%s'\n", master_name);
} else {
if (status != 0) {
*pushstat = status;
if (debug) fprintf(stderr,
"ypxfr: Couldn't get map's master name, status was %d\n",
status);
return (FALSE);
}
master_name = master;
}
if (debug)
fprintf(stderr,
"ypxfr: Getting private records from master.\n");
if (get_misc_recs(&status)) {
if (debug)
fprintf(stderr,
"ypxfr: Masters map %s secure and %s an interdomain map.\n",
(secure_map) ? "is" : "is not",
(interdomain_map) ? "is" : "is not");
} else {
if (status != 0) {
*pushstat = status;
if (debug)
fprintf(stderr,
"ypxfr: Couldn't get state of secure and interdomain flags in map.\n");
return (FALSE);
}
}
return (TRUE);
}
/*
* This gets the map's order number from the master server
*/
bool
get_order(an, n, pushstat)
char *an;
unsigned *n;
int *pushstat;
{
if (master_prog_vers == YPVERS) {
return (get_v2order(an, n, pushstat));
} else
return (FALSE);
}
bool
get_v2order(an, n, pushstat)
char *an;
unsigned *n;
int *pushstat;
{
struct ypreq_nokey req;
struct ypresp_order resp;
int retval;
req.domain = source;
req.map = map;
/*
* Get the map''s order number, null-terminate it and store it,
* and convert it to binary and store it again.
*/
retval = FALSE;
if ((enum clnt_stat) clnt_call(master_server.dom_client,
YPPROC_ORDER, (xdrproc_t)xdr_ypreq_nokey, (char *)&req,
(xdrproc_t)xdr_ypresp_order, (char *)&resp,
udp_timeout) == RPC_SUCCESS) {
if (resp.status == YP_TRUE) {
sprintf(an, "%d", resp.ordernum);
*n = resp.ordernum;
retval = TRUE;
} else if (resp.status != YP_BADDB) {
*pushstat = ypprot_err(resp.status);
if (!logging) {
logprintf(
"(info) Can't get order number from ypserv at %s. Reason: %s.\n",
master, yperr_string(
ypprot_err(resp.status)));
}
}
CLNT_FREERES(master_server.dom_client,
(xdrproc_t)xdr_ypresp_order,
(char *)&resp);
} else {
*pushstat = YPPUSH_RPC;
logprintf("ypxfr(get_v2order) RPC call to %s failed", master);
clnt_perror(master_server.dom_client, "");
}
return (retval);
}
/*
* Pick up the state of the YP_SECURE and YP_INTERDOMAIN records from the
* master. Only works on 4.0 V2 masters that will match a YP_ private key
* when asked to explicitly.
*/
bool
get_misc_recs(pushstat)
int *pushstat;
{
struct ypreq_key req;
struct ypresp_val resp;
int retval;
req.domain = source;
req.map = map;
req.keydat.dptr = yp_secure;
req.keydat.dsize = yp_secure_sz;
resp.valdat.dptr = NULL;
resp.valdat.dsize = 0;
/*
* Get the value of the IS_SECURE key in the map.
*/
retval = FALSE;
if (debug)
fprintf(stderr, "ypxfr: Checking masters secure key.\n");
if ((enum clnt_stat) clnt_call(master_server.dom_client,
YPPROC_MATCH, (xdrproc_t)xdr_ypreq_key, (char *)&req,
(xdrproc_t)xdr_ypresp_val, (char *)&resp,
udp_timeout) == RPC_SUCCESS) {
if (resp.status == YP_TRUE) {
if (debug)
fprintf(stderr, "ypxfr: SECURE\n");
secure_map = TRUE;
retval = TRUE;
} else if ((resp.status != YP_NOKEY) &&
(resp.status != YP_VERS) &&
(resp.status != YP_NOMORE)) {
*pushstat = ypprot_err(resp.status);
if (!logging) {
logprintf(
"(info) Can't get secure flag from ypserv at %s. Reason: %s.\n",
master, yperr_string(
ypprot_err(resp.status)));
}
}
CLNT_FREERES(master_server.dom_client,
(xdrproc_t)xdr_ypresp_val,
(char *)&resp);
} else {
*pushstat = YPPUSH_RPC;
logprintf("ypxfr(get_misc_recs) RPC call to %s failed", master);
clnt_perror(master_server.dom_client, "");
}
if (debug)
fprintf(stderr, "ypxfr: Checking masters INTERDOMAIN key.\n");
req.keydat.dptr = yp_interdomain;
req.keydat.dsize = yp_interdomain_sz;
resp.valdat.dptr = NULL;
resp.valdat.dsize = 0;
/*
* Get the value of the INTERDOMAIN key in the map.
*/
if ((enum clnt_stat) clnt_call(master_server.dom_client,
YPPROC_MATCH, (xdrproc_t)xdr_ypreq_key, (char *)&req,
(xdrproc_t)xdr_ypresp_val, (char *)&resp,
udp_timeout) == RPC_SUCCESS) {
if (resp.status == YP_TRUE) {
if (debug)
fprintf(stderr, "ypxfr: INTERDOMAIN\n");
interdomain_map = TRUE;
interdomain_value = (char *)malloc(resp.valdat.dsize+1);
(void) memmove(interdomain_value, resp.valdat.dptr,
resp.valdat.dsize);
*(interdomain_value+resp.valdat.dsize) = '\0';
interdomain_sz = resp.valdat.dsize;
retval = TRUE;
} else if ((resp.status != YP_NOKEY) &&
(resp.status != YP_VERS) &&
(resp.status != YP_NOMORE)) {
*pushstat = ypprot_err(resp.status);
if (!logging) {
logprintf(
"(info) Can't get interdomain flag from ypserv at %s. Reason: %s.\n",
master, yperr_string(
ypprot_err(resp.status)));
}
}
CLNT_FREERES(master_server.dom_client,
(xdrproc_t)xdr_ypresp_val,
(char *)&resp);
} else {
*pushstat = YPPUSH_RPC;
logprintf("ypxfr(get_misc_recs) RPC call to %s failed", master);
clnt_perror(master_server.dom_client, "");
}
return (retval);
}
/*
* This gets the map's master name from the master server
*/
bool
get_master_name(name, pushstat)
char *name;
int *pushstat;
{
if (master_prog_vers == YPVERS) {
return (get_v2master_name(name, pushstat));
} else
return (FALSE);
}
bool
get_v2master_name(name, pushstat)
char *name;
int *pushstat;
{
struct ypreq_nokey req;
struct ypresp_master resp;
int retval;
req.domain = source;
req.map = map;
resp.master = NULL;
retval = FALSE;
if ((enum clnt_stat) clnt_call(master_server.dom_client,
YPPROC_MASTER, (xdrproc_t)xdr_ypreq_nokey, (char *)&req,
(xdrproc_t)xdr_ypresp_master, (char *)&resp,
udp_timeout) == RPC_SUCCESS) {
if (resp.status == YP_TRUE) {
strcpy(name, resp.master);
retval = TRUE;
} else if (resp.status != YP_BADDB) {
*pushstat = ypprot_err(resp.status);
if (!logging) {
logprintf(
"(info) Can't get master name from ypserv at %s. Reason: %s.\n",
master, yperr_string(
ypprot_err(resp.status)));
}
}
CLNT_FREERES(master_server.dom_client,
(xdrproc_t)xdr_ypresp_master,
(char *)&resp);
} else {
*pushstat = YPPUSH_RPC;
logprintf(
"ypxfr(get_v2master_name) RPC call to %s failed", master);
clnt_perror(master_server.dom_client, "");
}
return (retval);
}
/*
* This does the work of transferring the map.
*/
bool
move_map(pushstat)
int *pushstat;
{
unsigned local_version;
char map_name[MAXNAMLEN + 1];
char tmp_name[MAXNAMLEN + 1];
char bkup_name[MAXNAMLEN + 1];
char an[11];
unsigned n;
datum key;
datum val;
int hgstatus;
mkfilename(map_name);
if (!force) {
local_version = get_local_version(map_name);
if (debug) fprintf(stderr,
"ypxfr: Local version of map '%s' is %d\n",
map_name, local_version);
if (local_version >= *master_version) {
logprintf(
"Map %s at %s is not more recent than local.\n",
map, master);
*pushstat = YPPUSH_AGE;
return (FALSE);
}
}
mk_tmpname(yptempname_prefix, tmp_name);
if (!new_mapfiles(tmp_name)) {
logprintf(
"Can't create temp map %s.\n", tmp_name);
*pushstat = YPPUSH_FILE;
return (FALSE);
}
if ((hgstatus = ypxfrd_getdbm(tmp_name, master, source, map)) < 0)
{
logprintf(
"(info) %s %s %s ypxfrd getdbm failed (reason = %d) -- using ypxfr\n",
master, domain, map, hgstatus);
db = dbm_open(tmp_name, O_RDWR + O_CREAT + O_TRUNC, 0644);
if (db == NULL) {
logprintf(
"Can't dbm init temp map %s.\n", tmp_name);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
if (defwrite) dbm_setdefwrite(db);
if (!get_map(tmp_name, pushstat)) {
del_mapfiles(tmp_name);
return (FALSE);
}
if (!add_private_entries(tmp_name)) {
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
/*
* Decide whether the map just transferred is a secure map.
* If we already know the local version was secure, we do not
* need to check this version.
*/
if (!secure_map) {
key.dptr = yp_secure;
key.dsize = yp_secure_sz;
val = dbm_fetch(db, key);
if (val.dptr != NULL) {
secure_map = TRUE;
}
}
if (dbm_close_status(db) < 0) {
logprintf(
"Can't do dbm close operation on temp map %s.\n",
tmp_name);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
if (!get_order(an, &n, pushstat)) {
return (FALSE);
}
if (n != *master_version) {
logprintf(
"Version skew at %s while transferring map %s.\n",
master, map);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_SKEW;
return (FALSE);
}
if (check_count)
if (!count_mismatch(tmp_name, entry_count)) {
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
} else {
/* touch up the map */
db = dbm_open(tmp_name, 2, 0644);
if (db == NULL) {
logprintf(
"Can't dbm init temp map %s.\n", tmp_name);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
if (!add_private_entries(tmp_name)) {
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
/*
* Decide whether the map just transferred is a secure map.
* If we already know the local version was secure, we do not
* need to check this version.
*/
if (!secure_map) {
key.dptr = yp_secure;
key.dsize = yp_secure_sz;
val = dbm_fetch(db, key);
if (val.dptr != NULL) {
secure_map = TRUE;
}
}
if (dbm_close_status(db) < 0) {
logprintf(
"Can't do dbm close operation on temp map %s.\n",
tmp_name);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_DBM;
return (FALSE);
}
}
if (lock_map(map_name) == 0) {
del_mapfiles(tmp_name);
logprintf("Lock error on %s\n", map_name);
*pushstat = YPPUSH_FILE;
return (FALSE);
}
if (!check_map_existence(map_name)) {
if (!rename_map(tmp_name, map_name, secure_map)) {
del_mapfiles(tmp_name);
logprintf(
"Rename error: couldn't mv %s to %s.\n",
tmp_name, map_name);
*pushstat = YPPUSH_FILE;
unlock_map(map_name);
return (FALSE);
}
} else {
mk_tmpname(ypbkupname_prefix, bkup_name);
if (!rename_map(map_name, bkup_name, secure_map)) {
(void) rename_map(bkup_name, map_name, secure_map);
logprintf(
"Rename error: check that old %s is still intact.\n",
map_name);
del_mapfiles(tmp_name);
*pushstat = YPPUSH_FILE;
unlock_map(map_name);
return (FALSE);
}
if (rename_map(tmp_name, map_name, secure_map)) {
del_mapfiles(bkup_name);
} else {
del_mapfiles(tmp_name);
(void) rename_map(bkup_name, map_name, secure_map);
logprintf(
"Rename error: check that old %s is still intact.\n",
map_name);
*pushstat = YPPUSH_FILE;
unlock_map(map_name);
return (FALSE);
}
}
if (unlock_map(map_name) == 0)
return (FALSE);
return (TRUE);
}
/*
* This tries to get the order number out of the local version of the map.
* If the attempt fails for any version, the function will return "0"
*/
unsigned
get_local_version(name)
char *name;
{
datum key;
datum val;
char number[11];
DBM *db;
if (!check_map_existence(name)) {
return (0);
}
if (debug) fprintf(stderr,
"ypxfr: Map does exist, checking version now.\n");
if ((db = dbm_open(name, 0, 0)) == 0) {
return (0);
}
key.dptr = yp_last_modified;
key.dsize = yp_last_modified_sz;
val = dbm_fetch(db, key);
if (!val.dptr) { /* Check to see if dptr is NULL */
return (0);
}
if (val.dsize == 0 || val.dsize > 10) {
return (0);
}
/* Now save this value while we have it available */
(void) memmove(number, val.dptr, val.dsize);
number[val.dsize] = '\0';
/*
* Now check to see if it is 'secure'. If we haven't already
* determined that it is secure in get_private_recs() then we check
* the local map here.
*/
if (!secure_map) {
key.dptr = yp_secure;
key.dsize = yp_secure_sz;
val = dbm_fetch(db, key);
secure_map = (val.dptr != NULL);
}
/*
* Now check to see if interdomain requests are made of the local
* map. Keep the value around if they are.
*/
if (!interdomain_map) {
key.dptr = yp_interdomain;
key.dsize = yp_interdomain_sz;
val = dbm_fetch(db, key);
if (interdomain_map = (val.dptr != NULL)) {
interdomain_value = (char *)malloc(val.dsize+1);
(void) memmove(interdomain_value, val.dptr, val.dsize);
*(interdomain_value+val.dsize) = '\0';
interdomain_sz = val.dsize;
}
}
/* finish up */
(void) dbm_close_status(db);
return ((unsigned)atoi(number));
}
/*
* This constructs a file name for a map, minus its dbm_dir
* or dbm_pag extensions
*/
void
mkfilename(ppath)
char *ppath;
{
bool_t yptol_mode;
int len;
/* Work out if we are in yptol mode */
yptol_mode = is_yptol_mode();
len = strlen(domain) + strlen(map) + strlen(ypdbpath) + 3;
if (yptol_mode)
len += strlen(NTOL_PREFIX);
if (len > (MAXNAMLEN + 1)) {
logprintf("Map name string too long.\n");
}
(void) strcpy(ppath, ypdbpath);
(void) strcat(ppath, "/");
(void) strcat(ppath, domain);
(void) strcat(ppath, "/");
if (yptol_mode)
(void) strcat(ppath, NTOL_PREFIX);
(void) strcat(ppath, map);
}
/*
* This returns a temporary name for a map transfer minus its dbm_dir or
* dbm_pag extensions.
*/
void
mk_tmpname(prefix, xfr_name)
char *prefix;
char *xfr_name;
{
char xfr_anumber[10];
long xfr_number;
if (!xfr_name) {
return;
}
xfr_number = getpid();
(void) sprintf(xfr_anumber, "%d", xfr_number);
(void) strcpy(xfr_name, ypdbpath);
(void) strcat(xfr_name, "/");
(void) strcat(xfr_name, domain);
(void) strcat(xfr_name, "/");
(void) strcat(xfr_name, prefix);
(void) strcat(xfr_name, map);
(void) strcat(xfr_name, ".");
(void) strcat(xfr_name, xfr_anumber);
}
/*
* This deletes the .pag and .dir files which implement a map.
*
* Note: No error checking is done here for a garbage input file name or for
* failed unlink operations.
*/
void
del_mapfiles(basename)
char *basename;
{
char dbfilename[MAXNAMLEN + 1];
if (!basename) {
return;
}
strcpy(dbfilename, basename);
strcat(dbfilename, dbm_pag);
unlink(dbfilename);
strcpy(dbfilename, basename);
strcat(dbfilename, dbm_dir);
unlink(dbfilename);
}
/*
* This creates <pname>.dir and <pname>.pag
*/
bool
new_mapfiles(pname)
char *pname;
{
char dbfile[MAXNAMLEN + 1];
int f;
int len;
if (!pname || ((len = strlen(pname)) == 0) ||
(len + 5) > (MAXNAMLEN + 1)) {
return (FALSE);
}
errno = 0;
(void) strcpy(dbfile, pname);
(void) strcat(dbfile, dbm_dir);
if ((f = open(dbfile, (O_WRONLY | O_CREAT | O_TRUNC), 0600)) >= 0) {
(void) close(f);
(void) strcpy(dbfile, pname);
(void) strcat(dbfile, dbm_pag);
if ((f = open(dbfile, (O_WRONLY | O_CREAT | O_TRUNC),
0600)) >= 0) {
(void) close(f);
return (TRUE);
} else {
return (FALSE);
}
} else {
return (FALSE);
}
}
int
count_callback(status)
int status;
{
if (status != YP_TRUE) {
if (status != YP_NOMORE) {
logprintf(
"Error from ypserv on %s (ypall_callback) = %s.\n",
master, yperr_string(ypprot_err(status)));
}
return (TRUE);
}
entry_count++;
return (FALSE);
}
/*
* This counts the entries in the dbm file after the transfer to
* make sure that the dbm file was built correctly.
* Returns TRUE if everything is OK, FALSE if they mismatch.
*/
int
count_mismatch(pname, oldcount)
char *pname;
int oldcount;
{
datum key;
DBM *db;
#ifdef REALLY_PARANOID
struct ypall_callback cbinfo;
struct ypreq_nokey allreq;
enum clnt_stat s;
struct dom_binding domb;
datum value;
#endif /* REALLY_PARANOID */
entry_count = 0;
db = dbm_open(pname, 0, 0);
if (db) {
for (key = dbm_firstkey(db);
key.dptr != NULL; key = dbm_nextkey(db))
entry_count++;
dbm_close_status(db);
}
if (oldcount != entry_count) {
logprintf(
"*** Count mismatch in dbm file %s: old=%d, new=%d ***\n",
map, oldcount, entry_count);
return (FALSE);
}
#ifdef REALLY_PARANOID
if ((domb.dom_client = __yp_clnt_create_rsvdport(master, YPPROG,
master_prog_vers,
"tcp6", 0, 0)) == 0 &&
(domb.dom_client = __yp_clnt_create_rsvdport(master, YPPROG,
master_prog_vers,
"tcp", 0, 0)) == 0) {
clnt_pcreateerror("ypxfr (mismatch) - TCP channel "
"create failure");
return (FALSE);
}
if (master_prog_vers == YPVERS) {
int tmpstat;
allreq.domain = source;
allreq.map = map;
cbinfo.foreach = count_callback;
tmpstat = 0;
cbinfo.data = (char *)&tmpstat;
entry_count = 0;
s = clnt_call(domb.dom_client, YPPROC_ALL, xdr_ypreq_nokey,
&allreq, xdr_ypall, &cbinfo, tcp_timeout);
if (tmpstat == 0) {
if (s == RPC_SUCCESS) {
} else {
clnt_perror(domb.dom_client,
"ypxfr (get_map/all) - RPC clnt_call (TCP) failure");
return (FALSE);
}
} else {
return (FALSE);
}
} else {
logprintf("Wrong version number!\n");
return (FALSE);
}
clnt_destroy(domb.dom_client);
close(domb.dom_socket);
entry_count += 2; /* add in YP_entries */
if (oldcount != entry_count) {
logprintf(
"*** Count mismatch after enumerate %s: old=%d, new=%d ***\n",
map, oldcount, entry_count);
return (FALSE);
}
#endif /* REALLY_PARANOID */
return (TRUE);
}
/*
* This sets up a TCP connection to the master server, and either gets
* ypall_callback to do all the work of writing it to the local dbm file
* (if the ypserv is current version), or does it itself for an old ypserv.
*/
bool
get_map(pname, pushstat)
char *pname;
int *pushstat;
{
struct dom_binding domb;
enum clnt_stat s;
struct ypreq_nokey allreq;
struct ypall_callback cbinfo;
bool retval = FALSE;
int tmpstat;
int recvsiz = 24 * 1024;
struct netconfig *nconf;
int fd;
struct netbuf *svcaddr;
char *netid[] = { "tcp6", "tcp" };
int i, lastnetid = (sizeof (netid)/sizeof (netid[0])) - 1;
svcaddr = (struct netbuf *)calloc(1, sizeof (struct netbuf));
if (! svcaddr)
return (FALSE);
svcaddr->maxlen = 32;
svcaddr->len = 32;
svcaddr->buf = (char *)malloc(32);
if (! svcaddr->buf) {
free(svcaddr);
return (FALSE);
}
for (i = 0; i <= lastnetid; i++) {
fd = RPC_ANYFD;
if ((nconf = getnetconfigent(netid[i])) == NULL) {
if (i != lastnetid)
continue;
logprintf("ypxfr: tcp transport not supported\n");
free(svcaddr->buf);
free(svcaddr);
return (FALSE);
}
if (rpcb_getaddr(YPPROG, master_prog_vers, nconf, svcaddr,
master) == FALSE) {
freenetconfigent(nconf);
if (i != lastnetid)
continue;
logprintf("ypxfr: could not get %s address\n", master);
free(svcaddr->buf);
free(svcaddr);
return (FALSE);
}
if ((domb.dom_client = __nis_clnt_create(fd, nconf, 0, svcaddr,
0, YPPROG, master_prog_vers, recvsiz, 0)) == 0) {
freenetconfigent(nconf);
if (i != lastnetid)
continue;
clnt_pcreateerror(
"ypxfr (get_map) - TCP channel create failure");
*pushstat = YPPUSH_RPC;
free(svcaddr->buf);
free(svcaddr);
return (FALSE);
}
break;
}
entry_count = 0;
if (master_prog_vers == YPVERS) {
allreq.domain = source;
allreq.map = map;
cbinfo.foreach = ypall_callback;
tmpstat = 0;
cbinfo.data = (char *)&tmpstat;
s = clnt_call(domb.dom_client, YPPROC_ALL,
(xdrproc_t)xdr_ypreq_nokey,
(char *)&allreq, (xdrproc_t)xdr_ypall, (char *)&cbinfo,
tcp_timeout);
if (tmpstat == 0) {
if (s == RPC_SUCCESS) {
retval = TRUE;
} else {
clnt_perror(domb.dom_client,
"ypxfr (get_map/all) - RPC clnt_call (TCP) failure");
*pushstat = YPPUSH_RPC;
}
} else {
*pushstat = tmpstat;
}
} else
retval = FALSE; /* barf again at YPOLDVERS */
cleanup:
clnt_destroy(domb.dom_client);
return (retval);
}
/*
* This sticks each key-value pair into the current map. It returns FALSE as
* long as it wants to keep getting called back, and TRUE on error conditions
* and "No more k-v pairs".
*/
int
ypall_callback(status, key, kl, val, vl, pushstat)
int status;
char *key;
int kl;
char *val;
int vl;
int *pushstat;
{
datum keydat;
datum valdat;
datum test;
if (status != YP_TRUE) {
if (status != YP_NOMORE) {
logprintf(
"Error from ypserv on %s (ypall_callback) = %s.\n",
master, yperr_string(ypprot_err(status)));
*pushstat = map_yperr_to_pusherr(status);
}
return (TRUE);
}
keydat.dptr = key;
keydat.dsize = kl;
valdat.dptr = val;
valdat.dsize = vl;
entry_count++;
/* way too many fetches */
#ifdef PARANOID
test = dbm_fetch(db, keydat);
if (test.dptr != NULL) {
logprintf("Duplicate key %s in map %s\n", key, map);
*pushstat = YPPUSH_DBM;
return (TRUE);
}
#endif /* PARANOID */
if (dbm_store(db, keydat, valdat, 0) < 0) {
logprintf(
"Can't do dbm store into temp map %s.\n", map);
*pushstat = YPPUSH_DBM;
return (TRUE);
}
#ifdef PARANOID
test = dbm_fetch(db, keydat);
if (test.dptr == NULL) {
logprintf("Key %s was not inserted into dbm file %s\n",
key, map);
*pushstat = YPPUSH_DBM;
return (TRUE);
}
#endif /* PARANOID */
if (dbm_error(db)) {
logprintf("Key %s dbm_error raised in file %s\n",
key, map);
*pushstat = YPPUSH_DBM;
return (TRUE);
}
return (FALSE);
}
/*
* This maps a YP_xxxx error code into a YPPUSH_xxxx error code
*/
int
map_yperr_to_pusherr(yperr)
int yperr;
{
int reason;
switch (yperr) {
case YP_NOMORE:
reason = YPPUSH_SUCC;
break;
case YP_NOMAP:
reason = YPPUSH_NOMAP;
break;
case YP_NODOM:
reason = YPPUSH_NODOM;
break;
case YP_NOKEY:
reason = YPPUSH_YPERR;
break;
case YP_BADARGS:
reason = YPPUSH_BADARGS;
break;
case YP_BADDB:
reason = YPPUSH_YPERR;
break;
default:
reason = YPPUSH_XFRERR;
break;
}
return (reason);
}
/*
* This writes the last-modified and master entries into the new dbm file
*/
bool
add_private_entries(pname)
char *pname;
{
datum key;
datum val;
if (!fake_master_version) {
key.dptr = yp_last_modified;
key.dsize = yp_last_modified_sz;
val.dptr = master_ascii_version;
val.dsize = strlen(master_ascii_version);
if (dbm_store(db, key, val, 1) < 0) {
logprintf(
"Can't do dbm store into temp map %s.\n",
pname);
return (FALSE);
}
entry_count++;
}
if (master_name) {
key.dptr = yp_master_name;
key.dsize = yp_master_name_sz;
val.dptr = master_name;
val.dsize = strlen(master_name);
if (dbm_store(db, key, val, 1) < 0) {
logprintf(
"Can't do dbm store into temp map %s.\n",
pname);
return (FALSE);
}
entry_count++;
}
if (interdomain_map) {
key.dptr = yp_interdomain;
key.dsize = yp_interdomain_sz;
val.dptr = interdomain_value;
val.dsize = interdomain_sz;
if (dbm_store(db, key, val, 1) < 0) {
logprintf(
"Can't do dbm store into temp map %s.\n",
pname);
return (FALSE);
}
entry_count++;
}
if (secure_map) {
key.dptr = yp_secure;
key.dsize = yp_secure_sz;
val.dptr = yp_secure;
val.dsize = yp_secure_sz;
if (dbm_store(db, key, val, 1) < 0) {
logprintf(
"Can't do dbm store into temp map %s.\n",
pname);
return (FALSE);
}
entry_count++;
}
return (TRUE);
}
/*
* This sends a YPPROC_CLEAR message to the local ypserv process.
*/
bool
send_ypclear(pushstat)
int *pushstat;
{
struct dom_binding domb;
char local_host_name[256];
unsigned int progvers;
int status;
if (gethostname(local_host_name, 256)) {
logprintf("Can't get local machine name.\n");
*pushstat = YPPUSH_RSRC;
return (FALSE);
}
if (!bind_to_server(local_host_name, &domb,
&progvers, &status)) {
*pushstat = YPPUSH_CLEAR;
return (FALSE);
}
if ((enum clnt_stat) clnt_call(domb.dom_client,
YPPROC_CLEAR, xdr_void, 0, xdr_void, 0,
udp_timeout) != RPC_SUCCESS) {
logprintf(
"Can't send ypclear message to ypserv on the local machine.\n");
xfr_exit(YPPUSH_CLEAR);
}
return (TRUE);
}
/*
* This decides if send_callback has to get called, and does the process exit.
*/
void
xfr_exit(status)
int status;
{
if (callback) {
send_callback(&status);
}
if (status == YPPUSH_SUCC) {
#ifdef TREEPUSH
if (treepush) {
if (debug)
execlp("./yppush", "yppush", "-T", map, 0);
execlp("/usr/etc/yp/yppush", "yppush", "-T", map, 0);
perror("yppush");
}
#endif
exit(0);
} else {
exit(1);
}
}
/*
* This sets up a UDP connection to the yppush process which contacted our
* parent ypserv, and sends him a status on the requested transfer.
*/
void
send_callback(status)
int *status;
{
struct yppushresp_xfr resp;
struct dom_binding domb;
resp.transid = (unsigned long) atoi(tid);
resp.status = (unsigned long) *status;
udp_timeout.tv_sec = CALLTIMEOUT;
if ((domb.dom_client = __yp_clnt_create_rsvdport(pushhost,
(ulong_t)atoi(proto),
YPPUSHVERS,
0, 0, 0)) == NULL) {
*status = YPPUSH_RPC;
return;
}
if ((enum clnt_stat) clnt_call(domb.dom_client,
YPPUSHPROC_XFRRESP, (xdrproc_t)xdr_yppushresp_xfr,
(char *)&resp, xdr_void, 0,
udp_timeout) != RPC_SUCCESS) {
*status = YPPUSH_RPC;
return;
}
}
/*
* FUNCTION: is_yptol_mode();
*
* DESCRIPTION: Determines if we should run in N2L or traditional mode based
* on the presence of the N2L mapping file.
*
* This is a copy of a function from libnisdb. If more than this
* one function become required it may be worth linking the
* entire lib.
*
* INPUTS: Nothing
*
* OUTPUTS: TRUE = Run in N2L mode
* FALSE = Run in traditional mode.
*/
bool_t
is_yptol_mode()
{
struct stat filestat;
if (stat(NTOL_MAP_FILE, &filestat) != -1)
return (TRUE);
return (FALSE);
}