From ad58baa13bcd045e2bc6b9298ea38647f6454b34 Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed, 31 Jul 2013 15:03:27 +0200
Subject: [PATCH] Drop support for SUBNETS_ACCESSED and CLIENT_ACCESSES
 commands

Support for the SUBNETS_ACCESSED and CLIENT_ACCESSES commands was
enabled in chronyd, but in chronyc it was always disabled and the
CLIENT_ACCESSES_BY_INDEX command was used instead. As there is no plan
to enable it in the future, remove the support completely.
---
 candm.h     |  29 +-------
 client.c    | 201 ----------------------------------------------------
 cmdmon.c    | 112 -----------------------------
 pktlength.c |  42 ++---------
 4 files changed, 6 insertions(+), 378 deletions(-)

diff --git a/candm.h b/candm.h
index 36291d7..1ce3da9 100644
--- a/candm.h
+++ b/candm.h
@@ -298,22 +298,10 @@ typedef struct {
   uint32_t bits_specd;
 } REQ_SubnetsAccessed_Subnet;
 
-#define MAX_SUBNETS_ACCESSED 8
-
-typedef struct {
-  uint32_t n_subnets;
-  REQ_SubnetsAccessed_Subnet subnets[MAX_SUBNETS_ACCESSED];
-} REQ_SubnetsAccessed;
-
 /* This is based on the response size rather than the
    request size */
 #define MAX_CLIENT_ACCESSES 8
 
-typedef struct {
-  uint32_t n_clients;
-  IPAddr client_ips[MAX_CLIENT_ACCESSES];
-} REQ_ClientAccesses;  
-
 typedef struct {
   uint32_t first_index;
   uint32_t n_indices;
@@ -370,7 +358,8 @@ typedef struct {
    modify polltarget, modify maxdelaydevratio, reselect, reselectdistance
 
    Version 5 : auth data moved to the end of the packet to allow hashes with
-   different sizes, extended sources, tracking and activity reports
+   different sizes, extended sources, tracking and activity reports, dropped
+   subnets accessed and client accesses
  */
 
 #define PROTO_VERSION_NUMBER 5
@@ -426,8 +415,6 @@ typedef struct {
     REQ_RTCReport rtcreport;
     REQ_TrimRTC trimrtc;
     REQ_CycleLogs cyclelogs;
-    REQ_SubnetsAccessed subnets_accessed;
-    REQ_ClientAccesses client_accesses;
     REQ_ClientAccessesByIndex client_accesses_by_index;
     REQ_ManualList manual_list;
     REQ_ManualDelete manual_delete;
@@ -582,11 +569,6 @@ typedef struct {
   uint32_t bitmap[8];
 } RPY_SubnetsAccessed_Subnet;
 
-typedef struct {
-  uint32_t n_subnets;
-  RPY_SubnetsAccessed_Subnet subnets[MAX_SUBNETS_ACCESSED];
-} RPY_SubnetsAccessed;
-
 typedef struct {
   IPAddr ip;
   uint32_t client_hits;
@@ -598,11 +580,6 @@ typedef struct {
   uint32_t last_cmd_hit_ago;
 } RPY_ClientAccesses_Client;
 
-typedef struct {
-  uint32_t n_clients;
-  RPY_ClientAccesses_Client clients[MAX_CLIENT_ACCESSES];
-} RPY_ClientAccesses;
-
 typedef struct {
   uint32_t n_indices;      /* how many indices there are in the server's table */
   uint32_t next_index;     /* the index 1 beyond those processed on this call */
@@ -656,8 +633,6 @@ typedef struct {
     RPY_Tracking tracking;
     RPY_Sourcestats sourcestats;
     RPY_Rtc rtc;
-    RPY_SubnetsAccessed subnets_accessed;
-    RPY_ClientAccesses client_accesses;
     RPY_ClientAccessesByIndex client_accesses_by_index;
     RPY_ManualList manual_list;
     RPY_Activity activity;
diff --git a/client.c b/client.c
index 370b082..e6aab07 100644
--- a/client.c
+++ b/client.c
@@ -1991,207 +1991,6 @@ process_cmd_rtcreport(char *line)
 
 /* ================================================== */
 
-#if 0
-
-/* This is a previous attempt at implementing the clients command.  It
-   could be re-instated sometime as a way of looking at all clients in a
-   particular subnet.  The problem with it is that is requires at least 5
-   round trips to the server even if the server only has one client to
-   report. */
-
-typedef struct XSubnetToDo {
-  struct XSubnetToDo *next;
-  unsigned long ip;
-  unsigned long bits;
-} SubnetToDo;
-
-static void
-process_cmd_clients(char *line)
-{
-  CMD_Request request;
-  CMD_Reply reply;
-  SubnetToDo *head, *todo, *tail, *p, *next_node, *new_node;
-  int i, j, nets_looked_up, clients_looked_up;
-  int word;
-  unsigned long mask;
-  unsigned long ip, bits;
-  unsigned long client_hits;
-  unsigned long peer_hits;
-  unsigned long cmd_hits_auth;
-  unsigned long cmd_hits_normal;
-  unsigned long cmd_hits_bad;
-  unsigned long last_ntp_hit_ago;
-  unsigned long last_cmd_hit_ago;
-  char hostname_buf[50];
-
-  int n_replies;
-
-  head = todo = MallocNew(SubnetToDo);
-  todo->next = NULL;
-  /* Set up initial query = root subnet */
-  todo->ip = 0;
-  todo->bits = 0;
-  tail = todo;
-
-  do {
-
-    request.command = htons(REQ_SUBNETS_ACCESSED);
-    /* Build list of subnets to examine */
-    i=0;
-    p=todo;
-    while((i < MAX_SUBNETS_ACCESSED) &&
-          p &&
-          (p->bits < 32)) {
-      
-      request.data.subnets_accessed.subnets[i].ip = htonl(p->ip);
-      request.data.subnets_accessed.subnets[i].bits_specd = htonl(p->bits);
-      p = p->next;
-      i++;
-    }         
-
-    nets_looked_up = i;
-
-    if (nets_looked_up == 0) {
-      /* No subnets need examining */
-      break;
-    }
-
-    request.data.subnets_accessed.n_subnets = htonl(nets_looked_up);
-
-    if (request_reply(&request, &reply, RPY_SUBNETS_ACCESSED, 0)) {
-          n_replies = ntohl(reply.data.subnets_accessed.n_subnets);
-          for (j=0; j<n_replies; j++) {
-            ip = ntohl(reply.data.subnets_accessed.subnets[j].ip);
-            bits = ntohl(reply.data.subnets_accessed.subnets[j].bits_specd);
-            for (i=0; i<256; i++) {
-              word = i/32;
-              mask = 1UL << (i%32);
-              if (ntohl(reply.data.subnets_accessed.subnets[j].bitmap[word]) & mask) {
-                /* Add this subnet to the todo list */
-                new_node = MallocNew(SubnetToDo);
-                new_node->next = NULL;
-                new_node->bits = bits + 8;
-                new_node->ip = ip | (i << (24 - bits));
-                tail->next = new_node;
-                tail = new_node;
-#if 0
-                printf("%08lx %2d %3d %08lx\n", ip, bits, i, new_node->ip);
-#endif
-              }
-            }
-          }
-
-          /* Skip the todo pointer forwards by the number of nets looked
-             up.  Can't do this earlier, because we might have to point
-             at the next layer of subnets that have only just been
-             concatenated to the linked list. */
-          for (i=0; i<nets_looked_up; i++) {
-            todo = todo->next;
-          }
-          
-      }
-      
-    } else {
-      return;
-    }
-  } while (1); /* keep going until all subnets have been expanded,
-                  down to single nodes */
-
-  /* Now the todo list consists of client records */
-  request.command = htons(REQ_CLIENT_ACCESSES);
-
-#if 0
-  printf("%d %d\n", sizeof (RPY_ClientAccesses_Client), offsetof(CMD_Reply, data.client_accesses.clients));
-#endif
-
-  printf("Hostname                   Client    Peer CmdAuth CmdNorm  CmdBad  LstN  LstC\n"
-         "=========================  ======  ======  ======  ======  ======  ====  ====\n");
-
-  do {
-
-    i = 0;
-    p = todo;
-    while ((i < MAX_CLIENT_ACCESSES) &&
-           p) {
-
-      request.data.client_accesses.client_ips[i] = htonl(p->ip);
-      p = p->next;
-      i++;
-    }
-
-    clients_looked_up = i;
-
-    if (clients_looked_up == 0) {
-      /* No more clients to do */
-      break;
-    }
-
-    request.data.client_accesses.n_clients = htonl(clients_looked_up);
-
-    if (request_reply(&request, &reply, RPY_CLIENT_ACCESSES, 0)) {
-          n_replies = ntohl(reply.data.client_accesses.n_clients);
-          for (j=0; j<n_replies; j++) {
-            ip = ntohl(reply.data.client_accesses.clients[j].ip);
-            if (ip != 0UL) {
-              /* ip == 0 implies that the node could not be found in
-                 the daemon's tables; we shouldn't ever generate this
-                 case, but ignore it if we do.  (In future there might
-                 be a protocol to reset the client logging; if another
-                 administrator runs that while we're doing the clients
-                 command, there will be a race condition that could
-                 cause this). */
-              
-              client_hits = ntohl(reply.data.client_accesses.clients[j].client_hits);
-              peer_hits = ntohl(reply.data.client_accesses.clients[j].peer_hits);
-              cmd_hits_auth = ntohl(reply.data.client_accesses.clients[j].cmd_hits_auth);
-              cmd_hits_normal = ntohl(reply.data.client_accesses.clients[j].cmd_hits_normal);
-              cmd_hits_bad = ntohl(reply.data.client_accesses.clients[j].cmd_hits_bad);
-              last_ntp_hit_ago = ntohl(reply.data.client_accesses.clients[j].last_ntp_hit_ago);
-              last_cmd_hit_ago = ntohl(reply.data.client_accesses.clients[j].last_cmd_hit_ago);
-
-              if (no_dns) {
-                snprintf(hostname_buf, sizeof(hostname_buf), 
-                         "%s", UTI_IPToDottedQuad(ip));
-              } else {
-                DNS_IPAddress2Name(ip, hostname_buf, sizeof(hostname_buf));
-                hostname_buf[25] = 0;
-              }
-              printf("%-25s  %6d  %6d  %6d  %6d  %6d  ",
-                     hostname_buf,
-                     client_hits, peer_hits,
-                     cmd_hits_auth, cmd_hits_normal, cmd_hits_bad);
-              print_seconds(last_ntp_hit_ago);
-              printf("  ");
-              print_seconds(last_cmd_hit_ago);
-              printf("\n");
-            }
-          }              
-
-          /* Skip the todo pointer forwards by the number of nets looked
-             up.  Can't do this earlier, because we might have to point
-             at the next layer of subnets that have only just been
-             concatenated to the linked list. */
-          for (i=0; i<clients_looked_up; i++) {
-            todo = todo->next;
-          }
-
-    }
-  
-  } while (1);
-  
-cleanup:
-  for (p = head; p; ) {
-    next_node = p->next;
-    Free(p);
-    p = next_node;
-  }
-  
-}
-
-#endif
-
-/* New implementation of clients command */
-
 static int
 process_cmd_clients(char *line)
 {
diff --git a/cmdmon.c b/cmdmon.c
index 6d6e32b..a917f03 100644
--- a/cmdmon.c
+++ b/cmdmon.c
@@ -1479,110 +1479,6 @@ handle_cyclelogs(CMD_Request *rx_message, CMD_Reply *tx_message)
 
 /* ================================================== */
 
-#define FLIPL(X) ((X) = htonl(X))
-
-static void
-handle_subnets_accessed(CMD_Request *rx_message, CMD_Reply *tx_message)
-{
-  int i, j;
-  unsigned long ns, bits_specd;
-  IPAddr ip;
-  CLG_Status result;
-  
-  ns = ntohl(rx_message->data.subnets_accessed.n_subnets);
-  tx_message->status = htons(STT_SUCCESS);
-  tx_message->reply = htons(RPY_SUBNETS_ACCESSED);
-  tx_message->data.subnets_accessed.n_subnets = htonl(ns);
-
-  for (i=0; i<ns; i++) {
-    UTI_IPNetworkToHost(&rx_message->data.subnets_accessed.subnets[i].ip, &ip);
-    bits_specd = ntohl(rx_message->data.subnets_accessed.subnets[i].bits_specd);
-
-    UTI_IPHostToNetwork(&ip, &tx_message->data.subnets_accessed.subnets[i].ip);
-    tx_message->data.subnets_accessed.subnets[i].bits_specd = htonl(bits_specd);
-    
-    result = CLG_GetSubnetBitmap(&ip, bits_specd, tx_message->data.subnets_accessed.subnets[i].bitmap);
-    switch (result) {
-      case CLG_SUCCESS:
-      case CLG_EMPTYSUBNET:
-        /* Flip endianness of each 4 byte word.  Don't care if subnet
-           is empty - just return an all-zero bitmap. */
-        for (j=0; j<8; j++) {
-          FLIPL(tx_message->data.subnets_accessed.subnets[i].bitmap[j]);
-        }
-        break;
-      case CLG_BADSUBNET:
-        tx_message->status = htons(STT_BADSUBNET);
-        tx_message->data.subnets_accessed.n_subnets = htonl(0);
-        return;
-      case CLG_INACTIVE:
-        tx_message->status = htons(STT_INACTIVE);
-        tx_message->data.subnets_accessed.n_subnets = htonl(0);
-        return;
-      default:
-        assert(0);
-        break;
-    }
-  }
-}
-
-/* ================================================== */
-
-static void
-handle_client_accesses(CMD_Request *rx_message, CMD_Reply *tx_message)
-{
-  CLG_Status result;
-  RPT_ClientAccess_Report report;
-  unsigned long nc;
-  IPAddr ip;
-  int i;
-  struct timeval now;
-
-  LCL_ReadCookedTime(&now, NULL);
-
-  nc = ntohl(rx_message->data.client_accesses.n_clients);
-  tx_message->status = htons(STT_SUCCESS);
-  tx_message->reply = htons(RPY_CLIENT_ACCESSES);
-  tx_message->data.client_accesses.n_clients = htonl(nc);
-
-  printf("%d %d\n", (int)sizeof(RPY_ClientAccesses_Client), (int)offsetof(CMD_Reply, data.client_accesses.clients));
-
-  for (i=0; i<nc; i++) {
-    UTI_IPNetworkToHost(&rx_message->data.client_accesses.client_ips[i], &ip);
-    UTI_IPHostToNetwork(&ip, &tx_message->data.client_accesses.clients[i].ip);
-
-    result = CLG_GetClientAccessReportByIP(&ip, &report, now.tv_sec);
-    switch (result) {
-      case CLG_SUCCESS:
-        tx_message->data.client_accesses.clients[i].client_hits = htonl(report.client_hits);
-        tx_message->data.client_accesses.clients[i].peer_hits = htonl(report.peer_hits);
-        tx_message->data.client_accesses.clients[i].cmd_hits_auth = htonl(report.cmd_hits_auth);
-        tx_message->data.client_accesses.clients[i].cmd_hits_normal = htonl(report.cmd_hits_normal);
-        tx_message->data.client_accesses.clients[i].cmd_hits_bad = htonl(report.cmd_hits_bad);
-        tx_message->data.client_accesses.clients[i].last_ntp_hit_ago = htonl(report.last_ntp_hit_ago);
-        tx_message->data.client_accesses.clients[i].last_cmd_hit_ago = htonl(report.last_cmd_hit_ago);
-        printf("%s %lu %lu %lu %lu %lu %lu %lu\n", UTI_IPToString(&ip), report.client_hits, report.peer_hits, report.cmd_hits_auth, report.cmd_hits_normal, report.cmd_hits_bad, report.last_ntp_hit_ago, report.last_cmd_hit_ago);
-        break;
-      case CLG_EMPTYSUBNET:
-        /* Signal back to the client that this single client address
-           was unknown */
-        ip.family = IPADDR_UNSPEC;
-        UTI_IPHostToNetwork(&ip, &tx_message->data.client_accesses.clients[i].ip);
-        break;
-      case CLG_INACTIVE:
-        tx_message->status = htons(STT_INACTIVE);
-        tx_message->data.client_accesses.n_clients = htonl(0);
-        return;
-      default:
-        assert(0);
-        break;
-    }
-  }
-
-}
-
-/* ================================================== */
-
 static void
 handle_client_accesses_by_index(CMD_Request *rx_message, CMD_Reply *tx_message)
 {
@@ -2243,14 +2139,6 @@ read_from_cmd_socket(void *anything)
           handle_cyclelogs(&rx_message, &tx_message);
           break;
 
-        case REQ_SUBNETS_ACCESSED:
-          handle_subnets_accessed(&rx_message, &tx_message);
-          break;
-
-        case REQ_CLIENT_ACCESSES:
-          handle_client_accesses(&rx_message, &tx_message);
-          break;
-
         case REQ_CLIENT_ACCESSES_BY_INDEX:
           handle_client_accesses_by_index(&rx_message, &tx_message);
           break;
diff --git a/pktlength.c b/pktlength.c
index 68d0bda..761dacd 100644
--- a/pktlength.c
+++ b/pktlength.c
@@ -124,23 +124,9 @@ PKL_CommandLength(CMD_Request *r)
       case REQ_CYCLELOGS :
         return offsetof(CMD_Request, data.cyclelogs.EOR);
       case REQ_SUBNETS_ACCESSED :
-        {
-          unsigned long ns;
-          ns = ntohl(r->data.subnets_accessed.n_subnets);
-          if (ns > MAX_SUBNETS_ACCESSED)
-            return 0;
-          return (offsetof(CMD_Request, data.subnets_accessed.subnets) +
-                  ns * sizeof(REQ_SubnetsAccessed_Subnet));
-        }
       case REQ_CLIENT_ACCESSES:
-        {
-          unsigned long nc;
-          nc = ntohl(r->data.client_accesses.n_clients);
-          if (nc > MAX_CLIENT_ACCESSES)
-            return 0;
-          return (offsetof(CMD_Request, data.client_accesses.client_ips) +
-                  nc * sizeof(unsigned long));
-        }
+        /* No longer supported */
+        return 0;
       case REQ_CLIENT_ACCESSES_BY_INDEX:
         return offsetof(CMD_Request, data.client_accesses_by_index.EOR);
       case REQ_MANUAL_LIST:
@@ -198,29 +184,9 @@ PKL_ReplyLength(CMD_Reply *r)
       case RPY_RTC:
         return offsetof(CMD_Reply, data.rtc.EOR);
       case RPY_SUBNETS_ACCESSED :
-        {
-          unsigned long ns = ntohl(r->data.subnets_accessed.n_subnets);
-          if (r->status == htons(STT_SUCCESS)) {
-            if (ns > MAX_SUBNETS_ACCESSED)
-              return 0;
-            return (offsetof(CMD_Reply, data.subnets_accessed.subnets) +
-                    ns * sizeof(RPY_SubnetsAccessed_Subnet));
-          } else {
-            return offsetof(CMD_Reply, data);
-          }
-        }
       case RPY_CLIENT_ACCESSES:
-        {
-          unsigned long nc = ntohl(r->data.client_accesses.n_clients);
-          if (r->status == htons(STT_SUCCESS)) {
-            if (nc > MAX_CLIENT_ACCESSES)
-              return 0;
-            return (offsetof(CMD_Reply, data.client_accesses.clients) +
-                    nc * sizeof(RPY_ClientAccesses_Client));
-          } else {
-            return offsetof(CMD_Reply, data);
-          }
-        }
+        /* No longer supported */
+        return 0;
       case RPY_CLIENT_ACCESSES_BY_INDEX:
         {
           unsigned long nc = ntohl(r->data.client_accesses_by_index.n_clients);