Merged in dstaesse/ouroboros/be-endian (pull request #371)

Check time synchronization upon enrollment

3 files changed, 69 insertions, 7 deletions

diff --git a/src/ipcpd/normal/dir.c b/src/ipcpd/normal/dir.c
index d30b9ec0..703f4e79 100644
--- a/src/ipcpd/normal/dir.c
+++ b/src/ipcpd/normal/dir.c
@@ -31,21 +31,22 @@
 #include <string.h>
 #include <assert.h>
 
+#define DIR_PATH "/" DIR_NAME
+
 static char dir_path[RIB_MAX_PATH_LEN + 1];
 
 static void dir_path_reset(void) {
-        dir_path[strlen("/" DIR_NAME)]= '\0';
-        assert(strcmp("/" DIR_NAME, dir_path) == 0);
+        dir_path[strlen(DIR_PATH)]= '\0';
+        assert(strcmp(DIR_PATH, dir_path) == 0);
 }
 
 int dir_init(void)
 {
         /*FIXME: set ribmgr dissemination here */
-
         if (rib_add(RIB_ROOT, DIR_NAME))
                 return -1;
 
-        strcpy(dir_path, "/" DIR_NAME);
+        strcpy(dir_path, DIR_PATH);
 
         return 0;
 }
@@ -66,6 +67,9 @@ int dir_name_reg(char * name)
 
         assert(name);
 
+        if (ipcp_get_state() != IPCP_OPERATIONAL)
+                return -EPERM;
+
         dir_path_reset();
 
         ret = rib_add(dir_path, name);
@@ -91,6 +95,9 @@ int dir_name_unreg(char * name)
 
         assert(name);
 
+        if (ipcp_get_state() != IPCP_OPERATIONAL)
+                return -EPERM;
+
         dir_path_reset();
 
         rib_path_append(dir_path, name);
@@ -116,6 +123,9 @@ int dir_name_query(char * name)
 {
         size_t len;
 
+        if (ipcp_get_state() != IPCP_OPERATIONAL)
+                return -EPERM;
+
         dir_path_reset();
 
         rib_path_append(dir_path, name);
diff --git a/src/ipcpd/normal/enroll.c b/src/ipcpd/normal/enroll.c
index 16bfc592..94e171c0 100644
--- a/src/ipcpd/normal/enroll.c
+++ b/src/ipcpd/normal/enroll.c
@@ -21,10 +21,12 @@
 #define OUROBOROS_PREFIX "enrollment"
 
 #include <ouroboros/config.h>
+#include <ouroboros/time_utils.h>
 #include <ouroboros/cdap.h>
 #include <ouroboros/dev.h>
 #include <ouroboros/logs.h>
 #include <ouroboros/rib.h>
+#include <ouroboros/endian.h>
 
 #include "ae.h"
 
@@ -32,10 +34,15 @@
 #include <stdlib.h>
 #include <string.h>
 
+/* Symbolic, will return current time */
+#define TIME_NAME               "localtime"
+#define ENROLL_WARN_TIME_OFFSET 20
+
 #define DLR          "/"
 #define DIF_PATH     DLR DIF_NAME
 #define BOOT_PATH    DLR BOOT_NAME
 #define MEMBERS_PATH DLR MEMBERS_NAME
+#define TIME_PATH    DLR TIME_NAME
 
 int enroll_handle(int fd)
 {
@@ -72,7 +79,6 @@ int enroll_handle(int fd)
         while (!(boot_r && members_r && dif_name_r)) {
                 key = cdap_request_wait(ci, &oc, &name, &data,
                                         (size_t *) &len , &flags);
-
                 assert(key >= 0);
                 assert(name);
 
@@ -96,6 +102,15 @@ int enroll_handle(int fd)
                         members_r = true;
                 } else if (strcmp(name, dif_ro) == 0) {
                         dif_name_r = true;
+                } else if (strcmp(name, TIME_PATH) == 0) {
+                        struct timespec t;
+                        uint64_t buf[2];
+                        clock_gettime(CLOCK_REALTIME, &t);
+                        buf[0] = hton64(t.tv_sec);
+                        buf[1] = hton64(t.tv_nsec);
+                        cdap_reply_send(ci, key, 0, buf, sizeof(buf));
+                        free(name);
+                        continue;
                 } else {
                         log_warn("Illegal read: %s.", name);
                         cdap_reply_send(ci, key, -1, NULL, 0);
@@ -146,6 +161,11 @@ int enroll_boot(char * dst_name)
         size_t        len;
         int           fd;
 
+        struct timespec t0;
+        struct timespec rtt;
+
+        ssize_t delta_t;
+
         char * boot_ro    = BOOT_PATH;
         char * members_ro = MEMBERS_PATH;
         char * dif_ro     = DIF_PATH;
@@ -171,6 +191,37 @@ int enroll_boot(char * dst_name)
 
         log_dbg("Getting boot information from %s.", dst_name);
 
+        clock_gettime(CLOCK_REALTIME, &t0);
+
+        key = cdap_request_send(ci, CDAP_READ, TIME_PATH, NULL, 0, 0);
+        if (key < 0) {
+                log_err("Failed to send CDAP request.");
+                cdap_destroy(ci);
+                flow_dealloc(fd);
+                return -1;
+        }
+
+        if (cdap_reply_wait(ci, key, &data, &len)) {
+                log_err("Failed to get CDAP reply.");
+                cdap_destroy(ci);
+                flow_dealloc(fd);
+                return -1;
+        }
+
+        clock_gettime(CLOCK_REALTIME, &rtt);
+
+        delta_t = ts_diff_ms(&t0, &rtt);
+
+        assert (len == 2 * sizeof (uint64_t));
+
+        rtt.tv_sec  = ntoh64(((uint64_t *) data)[0]);
+        rtt.tv_nsec = ntoh64(((uint64_t *) data)[1]);
+
+        if (abs(ts_diff_ms(&t0, &rtt)) - delta_t > ENROLL_WARN_TIME_OFFSET)
+                log_warn("Clock offset above threshold.");
+
+        free(data);
+
         key = cdap_request_send(ci, CDAP_READ, boot_ro, NULL, 0, 0);
         if (key < 0) {
                 log_err("Failed to send CDAP request.");
diff --git a/src/ipcpd/normal/main.c b/src/ipcpd/normal/main.c
index 81912614..11ec0938 100644
--- a/src/ipcpd/normal/main.c
+++ b/src/ipcpd/normal/main.c
@@ -30,6 +30,7 @@
 #include <ouroboros/irm.h>
 #include <ouroboros/rib.h>
 #include <ouroboros/irm_config.h>
+#include <ouroboros/errno.h>
 
 #include "addr_auth.h"
 #include "ae.h"
@@ -45,7 +46,6 @@
 #include <stdlib.h>
 #include <pthread.h>
 #include <string.h>
-#include <errno.h>
 #include <assert.h>
 #include <inttypes.h>
 
@@ -108,7 +108,8 @@ static void * flow_acceptor(void * o)
 
                 fd = flow_accept(&ae_name, &qs);
                 if (fd < 0) {
-                        log_warn("Flow accept failed.");
+                        if (fd != -EIRMD)
+                                log_warn("Flow accept failed: %d", fd);
                         continue;
                 }