* 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"
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
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.
*/
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, '/')) {
- note(N_CRIT, "SM_MON request for hostname containing '/': %s",
- mon_name);
+ 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) {
note(N_WARNING, "gethostbyname error for %s", mon_name);
goto failure;
- } else if (!(hostinfo = gethostbyname(my_name))) {
+ }
+#ifndef RESTRICTED_STATD
+ if (!(hostinfo = gethostbyname(my_name))) {
note(N_WARNING, "gethostbyname error for %s", my_name);
goto failure;
} else
* I'll just do a quickie success return and things should
* be happy.
*/
- if (rtnl) {
- notify_list *temp = rtnl;
-
- while ((temp = nlist_gethost(temp, mon_name, 0))) {
- if (matchhostname(NL_MY_NAME(temp), my_name) &&
- NL_MY_PROC(temp) == id->my_proc &&
- NL_MY_PROG(temp) == id->my_prog &&
- NL_MY_VERS(temp) == id->my_vers) {
- /* Hey! We already know you guys! */
- dprintf(N_DEBUG,
- "Duplicate SM_MON request for %s "
- "from procedure on %s",
- mon_name, my_name);
+ clnt = rtnl;
- /* But we'll let you pass anyway. */
- result.res_stat = STAT_SUCC;
- result.state = MY_STATE;
- return (&result);
- }
- temp = NL_NEXT(temp);
+ while ((clnt = nlist_gethost(clnt, mon_name, 0))) {
+ if (matchhostname(NL_MY_NAME(clnt), my_name) &&
+ NL_MY_PROC(clnt) == id->my_proc &&
+ NL_MY_PROG(clnt) == id->my_prog &&
+ NL_MY_VERS(clnt) == id->my_vers) {
+ /* Hey! We already know you guys! */
+ dprintf(N_DEBUG,
+ "Duplicate SM_MON request for %s "
+ "from procedure on %s",
+ mon_name, my_name);
+
+ /* But we'll let you pass anyway. */
+ result.res_stat = STAT_SUCC;
+ result.state = MY_STATE;
+ return (&result);
}
+ clnt = NL_NEXT(clnt);
}
/*
path=xmalloc(strlen(SM_DIR)+strlen(mon_name)+2);
sprintf(path, "%s/%s", SM_DIR, mon_name);
- if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT, S_IRUSR|S_IWUSR)) < 0) {
+ if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT|O_APPEND,
+ S_IRUSR|S_IWUSR)) < 0) {
/* Didn't fly. We won't monitor. */
- note(N_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);
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.
clnt = NL_NEXT(clnt);
}
+#ifdef RESTRICTED_STATD
failure:
+#endif
note(N_WARNING, "Received erroneous SM_UNMON request from %s for %s",
my_name, mon_name);
return (&result);
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);
}
projects / nfs-utils.git / blobdiff