* NSM for Linux.
*/
-#include "config.h"
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <fcntl.h>
#include <limits.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
+#include <errno.h>
#include <arpa/inet.h>
+#include <dirent.h>
#include "misc.h"
#include "statd.h"
#include "notlist.h"
+#include "ha-callout.h"
notify_list * rtnl = NULL; /* Run-time notify list. */
+#define LINELEN (4*(8+1)+SM_PRIV_SIZE*2+1)
/*
* Services SM_MON requests.
notify_list *clnt;
struct in_addr my_addr;
#ifdef RESTRICTED_STATD
- struct in_addr mon_addr, caller;
+ struct in_addr caller;
#else
struct hostent *hostinfo = NULL;
#endif
*/
caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
- log(L_WARNING,
+ note(N_WARNING,
"Call to statd from non-local host %s",
inet_ntoa(caller));
goto failure;
if (id->my_prog != 100021 ||
(id->my_proc != 16 && id->my_proc != 24))
{
- log(L_WARNING,
+ note(N_WARNING,
"Attempt to register callback to %d/%d",
id->my_prog, id->my_proc);
goto failure;
}
+#if 0
+ This is not usable anymore. Linux-kernel can be configured to use
+ host names with NSM so that multi-homed hosts are handled properly.
+ NeilBrown 15mar2007
+
/* 3. mon_name must be an address in dotted quad.
* Again, specific to the linux kernel lockd.
*/
if (!inet_aton(mon_name, &mon_addr)) {
- log(L_WARNING,
+ note(N_WARNING,
"Attempt to register host %s (not a dotted quad)",
mon_name);
goto failure;
}
-#else
+#endif
+#endif
/*
* Check hostnames. If I can't look them up, I won't monitor. This
* might not be legal, but it adds a little bit of safety and sanity.
*/
/* must check for /'s in hostname! See CERT's CA-96.09 for details. */
- if (strchr(mon_name, '/')) {
- log(L_CRIT, "SM_MON request for hostname containing '/': %s",
- mon_name);
- log(L_CRIT, "POSSIBLE SPOOF/ATTACK ATTEMPT!");
+ if (strchr(mon_name, '/') || mon_name[0] == '.') {
+ note(N_CRIT, "SM_MON request for hostname containing '/' "
+ "or starting '.': %s", mon_name);
+ note(N_CRIT, "POSSIBLE SPOOF/ATTACK ATTEMPT!");
goto failure;
} else if (gethostbyname(mon_name) == NULL) {
- log(L_WARNING, "gethostbyname error for %s", mon_name);
+ note(N_WARNING, "gethostbyname error for %s", mon_name);
goto failure;
- } else if (!(hostinfo = gethostbyname(my_name))) {
- log(L_WARNING, "gethostbyname error for %s", my_name);
+ }
+#ifndef RESTRICTED_STATD
+ if (!(hostinfo = gethostbyname(my_name))) {
+ note(N_WARNING, "gethostbyname error for %s", my_name);
goto failure;
} else
my_addr = *(struct in_addr *) hostinfo->h_addr;
NL_MY_PROG(temp) == id->my_prog &&
NL_MY_VERS(temp) == id->my_vers) {
/* Hey! We already know you guys! */
- dprintf(L_DEBUG,
+ dprintf(N_DEBUG,
"Duplicate SM_MON request for %s "
"from procedure on %s",
mon_name, my_name);
* doesn't fail. (I should probably fix this assumption.)
*/
if (!(clnt = nlist_new(my_name, mon_name, 0))) {
- log(L_WARNING, "out of memory");
+ note(N_WARNING, "out of memory");
goto failure;
}
*/
path=xmalloc(strlen(SM_DIR)+strlen(mon_name)+2);
- sprintf(path, SM_DIR "/%s", mon_name);
- if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT, S_IRUSR|S_IWUSR)) < 0) {
+ sprintf(path, "%s/%s", SM_DIR, mon_name);
+ if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT|O_APPEND,
+ S_IRUSR|S_IWUSR)) < 0) {
/* Didn't fly. We won't monitor. */
- log(L_ERROR, "creat(%s) failed: %m", path);
+ note(N_ERROR, "creat(%s) failed: %s", path, strerror (errno));
nlist_free(NULL, clnt);
free(path);
goto failure;
}
+ {
+ char buf[LINELEN + 1 + SM_MAXSTRLEN + 2];
+ char *e;
+ int i;
+ e = buf + sprintf(buf, "%08x %08x %08x %08x ",
+ my_addr.s_addr, id->my_prog,
+ id->my_vers, id->my_proc);
+ for (i=0; i<SM_PRIV_SIZE; i++)
+ e += sprintf(e, "%02x", 0xff & (argp->priv[i]));
+ if (e+1-buf != LINELEN) abort();
+ e += sprintf(e, " %s\n", mon_name);
+ write(fd, buf, e-buf);
+ }
+
free(path);
+ /* PRC: do the HA callout: */
+ ha_callout("add-client", mon_name, my_name, -1);
nlist_insert(&rtnl, clnt);
close(fd);
result.res_stat = STAT_SUCC;
result.state = MY_STATE;
- dprintf(L_DEBUG, "MONITORING %s for %s", mon_name, my_name);
+ dprintf(N_DEBUG, "MONITORING %s for %s", mon_name, my_name);
return (&result);
failure:
- log(L_WARNING, "STAT_FAIL to %s for SM_MON of %s", my_name, mon_name);
+ note(N_WARNING, "STAT_FAIL to %s for SM_MON of %s", my_name, mon_name);
return (&result);
}
+void load_state(void)
+{
+ DIR *d;
+ struct dirent *de;
+ char buf[LINELEN + 1 + SM_MAXSTRLEN + 2];
+
+ d = opendir(SM_DIR);
+ if (!d)
+ return;
+ while ((de = readdir(d))) {
+ char *path;
+ FILE *f;
+ int p;
+
+ if (de->d_name[0] == '.')
+ continue;
+ path = xmalloc(strlen(SM_DIR)+strlen(de->d_name)+2);
+ sprintf(path, "%s/%s", SM_DIR, de->d_name);
+ f = fopen(path, "r");
+ free(path);
+ if (f == NULL)
+ continue;
+ while (fgets(buf, sizeof(buf), f) != NULL) {
+ int addr, proc, prog, vers;
+ char priv[SM_PRIV_SIZE];
+ char *b;
+ int i;
+ notify_list *clnt;
+
+ buf[sizeof(buf)-1] = 0;
+ b = strchr(buf, '\n');
+ if (b) *b = 0;
+ sscanf(buf, "%x %x %x %x ",
+ &addr, &prog, &vers, &proc);
+ b = buf+36;
+ for (i=0; i<SM_PRIV_SIZE; i++) {
+ sscanf(b, "%2x", &p);
+ priv[i] = p;
+ b += 2;
+ }
+ b++;
+ clnt = nlist_new("127.0.0.1", b, 0);
+ if (!clnt)
+ break;
+ NL_ADDR(clnt).s_addr = addr;
+ NL_MY_PROG(clnt) = prog;
+ NL_MY_VERS(clnt) = vers;
+ NL_MY_PROC(clnt) = proc;
+ memcpy(NL_PRIV(clnt), priv, SM_PRIV_SIZE);
+ nlist_insert(&rtnl, clnt);
+ }
+ fclose(f);
+ }
+ closedir(d);
+}
+
+
+
/*
* Services SM_UNMON requests.
char *mon_name = argp->mon_name,
*my_name = argp->my_id.my_name;
struct my_id *id = &argp->my_id;
+#ifdef RESTRICTED_STATD
+ struct in_addr caller;
+#endif
result.state = MY_STATE;
+#ifdef RESTRICTED_STATD
+ /* 1. Reject anyone not calling from 127.0.0.1.
+ * Ignore the my_name specified by the caller, and
+ * use "127.0.0.1" instead.
+ */
+ caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
+ if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
+ note(N_WARNING,
+ "Call to statd from non-local host %s",
+ inet_ntoa(caller));
+ goto failure;
+ }
+ my_name = "127.0.0.1";
+#endif
+
/* Check if we're monitoring anyone. */
if (!(clnt = rtnl)) {
- log(L_WARNING,
+ note(N_WARNING,
"Received SM_UNMON request from %s for %s while not "
"monitoring any hosts.", my_name, argp->mon_name);
return (&result);
NL_MY_PROG(clnt) == id->my_prog &&
NL_MY_VERS(clnt) == id->my_vers) {
/* Match! */
- dprintf(L_DEBUG, "UNMONITORING %s for %s",
+ dprintf(N_DEBUG, "UNMONITORING %s for %s",
mon_name, my_name);
+
+ /* PRC: do the HA callout: */
+ ha_callout("del-client", mon_name, my_name, -1);
+
nlist_free(&rtnl, clnt);
xunlink(SM_DIR, mon_name, 1);
clnt = NL_NEXT(clnt);
}
- log(L_WARNING, "Received erroneous SM_UNMON request from %s for %s",
+#ifdef RESTRICTED_STATD
+ failure:
+#endif
+ note(N_WARNING, "Received erroneous SM_UNMON request from %s for %s",
my_name, mon_name);
return (&result);
}
short int count = 0;
static sm_stat result;
notify_list *clnt;
+ char *my_name = argp->my_name;
+#ifdef RESTRICTED_STATD
+ struct in_addr caller;
+
+ /* 1. Reject anyone not calling from 127.0.0.1.
+ * Ignore the my_name specified by the caller, and
+ * use "127.0.0.1" instead.
+ */
+ caller = svc_getcaller(rqstp->rq_xprt)->sin_addr;
+ if (caller.s_addr != htonl(INADDR_LOOPBACK)) {
+ note(N_WARNING,
+ "Call to statd from non-local host %s",
+ inet_ntoa(caller));
+ goto failure;
+ }
+ my_name = "127.0.0.1";
+#endif
result.state = MY_STATE;
if (!(clnt = rtnl)) {
- log(L_WARNING, "Received SM_UNMON_ALL request from %s "
- "while not monitoring any hosts", argp->my_name);
+ note(N_WARNING, "Received SM_UNMON_ALL request from %s "
+ "while not monitoring any hosts", my_name);
return (&result);
}
- while ((clnt = nlist_gethost(clnt, argp->my_name, 1))) {
+ while ((clnt = nlist_gethost(clnt, my_name, 1))) {
if (NL_MY_PROC(clnt) == argp->my_proc &&
NL_MY_PROG(clnt) == argp->my_prog &&
NL_MY_VERS(clnt) == argp->my_vers) {
char mon_name[SM_MAXSTRLEN + 1];
notify_list *temp;
- dprintf(L_DEBUG,
+ dprintf(N_DEBUG,
"UNMONITORING (SM_UNMON_ALL) %s for %s",
NL_MON_NAME(clnt), NL_MY_NAME(clnt));
strncpy(mon_name, NL_MON_NAME(clnt),
sizeof (mon_name) - 1);
mon_name[sizeof (mon_name) - 1] = '\0';
temp = NL_NEXT(clnt);
+ /* PRC: do the HA callout: */
+ ha_callout("del-client", mon_name, my_name, -1);
nlist_free(&rtnl, clnt);
xunlink(SM_DIR, mon_name, 1);
++count;
}
if (!count) {
- dprintf(L_DEBUG, "SM_UNMON_ALL request from %s with no "
- "SM_MON requests from it.", argp->my_name);
+ dprintf(N_DEBUG, "SM_UNMON_ALL request from %s with no "
+ "SM_MON requests from it.", my_name);
}
-
+#ifdef RESTRICTED_STATD
+ failure:
+#endif
return (&result);
}