]> git.decadent.org.uk Git - nfs-utils.git/blobdiff - utils/statd/monitor.c
Use 65534 for anon uid/gid rather than -2
[nfs-utils.git] / utils / statd / monitor.c
index 879e583036ebe437bc7e058045586bc1e539238b..98cbf4a5940ba660bda50aa944f01769b0ee9ea4 100644 (file)
@@ -7,7 +7,9 @@
  * 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 "misc.h"
 #include "statd.h"
 #include "notlist.h"
+#include "ha-callout.h"
 
 notify_list *          rtnl = NULL;    /* Run-time notify list. */
 
@@ -58,7 +62,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
         */
        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;
@@ -71,12 +75,15 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
         *      This is specific to the linux kernel lockd, which
         *      makes the callback procedure part of the lockd interface.
         *      It is also prone to break when lockd changes its callback
-        *      procedure number.  XXX FIXME
+        *      procedure number -- which, in fact, has now happened once.
+        *      There must be a better way....   XXX FIXME
         */
-       if (id->my_proc != 100021 && id->my_proc != 24) {
-               log(L_WARNING,
-                       "Attempt to register callback to service %d",
-                       id->my_proc);
+       if (id->my_prog != 100021 ||
+           (id->my_proc != 16 && id->my_proc != 24))
+       {
+               note(N_WARNING,
+                       "Attempt to register callback to %d/%d",
+                       id->my_prog, id->my_proc);
                goto failure;
        }
 
@@ -84,7 +91,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
         *      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;
@@ -97,15 +104,15 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
 
        /* 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",
+               note(N_CRIT, "SM_MON request for hostname containing '/': %s",
                        mon_name);
-               log(L_CRIT, "POSSIBLE SPOOF/ATTACK ATTEMPT!");
+               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);
+               note(N_WARNING, "gethostbyname error for %s", my_name);
                goto failure;
        } else
                my_addr = *(struct in_addr *) hostinfo->h_addr;
@@ -131,7 +138,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
                                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);
@@ -150,7 +157,7 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
         * 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;
        }
 
@@ -165,25 +172,27 @@ sm_mon_1_svc(struct mon *argp, struct svc_req *rqstp)
         */
 
        path=xmalloc(strlen(SM_DIR)+strlen(mon_name)+2);
-       sprintf(path, SM_DIR "/%s", mon_name);
+       sprintf(path, "%s/%s", SM_DIR, mon_name);
        if ((fd = open(path, O_WRONLY|O_SYNC|O_CREAT, 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;
        }
        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);
 }
 
@@ -204,12 +213,30 @@ sm_unmon_1_svc(struct mon_id *argp, struct svc_req *rqstp)
        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);
@@ -227,8 +254,12 @@ sm_unmon_1_svc(struct mon_id *argp, struct svc_req *rqstp)
                        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);
 
@@ -237,7 +268,10 @@ sm_unmon_1_svc(struct mon_id *argp, struct svc_req *rqstp)
                        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);
 }
@@ -249,16 +283,33 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
        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) {
@@ -266,13 +317,15 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
                        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;
@@ -282,9 +335,11 @@ sm_unmon_all_1_svc(struct my_id *argp, struct svc_req *rqstp)
        }
 
        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);
 }