client: add option to print all sources

Add -a option to the sources and sourcestats commands to print all
sources, including those that don't have a resolved address yet. By
default, only sources that have a real address are printed for
compatibility. Remove the "210 Number of sources" messages to avoid
confusion. Also, modify the ntpdata command to always print only sources
with a resolved address.

client.c

@@ -1205,8 +1205,8 @@ give_help(void)
                           "Wait until synchronised in specified limits\0"
     "\0\0"
     "Time sources:\0\0"
-    "sources [-v]\0Display information about current sources\0"
+    "sources [-a] [-v]\0Display information about current sources\0"
-    "sourcestats [-v]\0Display statistics about collected measurements\0"
+    "sourcestats [-a] [-v]\0Display statistics about collected measurements\0"
     "reselect\0Force reselecting synchronisation source\0"
     "reselectdist <dist>\0Modify reselection distance\0"
     "\0\0"
@@ -1321,8 +1321,8 @@ command_name_generator(const char *text, int state)
   };
   const char *add_options[] = { "peer", "pool", "server", NULL };
   const char *manual_options[] = { "on", "off", "delete", "list", "reset", NULL };
-  const char *sources_options[] = { "-v", NULL };
+  const char *sources_options[] = { "-a", "-v", NULL };
-  const char *sourcestats_options[] = { "-v", NULL };
+  const char *sourcestats_options[] = { "-a", "-v", NULL };
   static int list_index, len;
 
   names[TAB_COMPLETE_BASE_CMDS] = base_commands;
@@ -2089,12 +2089,21 @@ format_name(char *buf, int size, int trunc_dns, int ref, uint32_t ref_id,
 
 /* ================================================== */
 
-static int
+static void
-check_for_verbose_flag(char *line)
+parse_sources_options(char *line, int *all, int *verbose)
 {
-  if (!csv_mode && !strcmp(line, "-v"))
+  char *opt;
-    return 1;
+
-  return 0;
+  *all = *verbose = 0;
+
+  while (*line) {
+    opt = line;
+    line = CPS_SplitWord(line);
+    if (!strcmp(opt, "-a"))
+      *all = 1;
+    else if (!strcmp(opt, "-v"))
+      *verbose = !csv_mode;
+  }
 }
 
 /* ================================================== */
@@ -2128,17 +2137,15 @@ process_cmd_sources(char *line)
   IPAddr ip_addr;
   uint32_t i, mode, n_sources;
   char name[256], mode_ch, state_ch;
-  int verbose;
+  int all, verbose;
 
-  /* Check whether to output verbose headers */
+  parse_sources_options(line, &all, &verbose);
-  verbose = check_for_verbose_flag(line);
   
   request.command = htons(REQ_N_SOURCES);
   if (!request_reply(&request, &reply, RPY_N_SOURCES, 0))
     return 0;
 
   n_sources = ntohl(reply.data.n_sources.n_sources);
-  print_info_field("210 Number of sources = %lu\n", (unsigned long)n_sources);
 
   if (verbose) {
     printf("\n");
@@ -2164,6 +2171,9 @@ process_cmd_sources(char *line)
 
     mode = ntohs(reply.data.source_data.mode);
     UTI_IPNetworkToHost(&reply.data.source_data.ip_addr, &ip_addr);
+    if (!all && ip_addr.family == IPADDR_ID)
+      continue;
+
     format_name(name, sizeof (name), 25,
                 mode == RPY_SD_MD_REF && ip_addr.family == IPADDR_INET4,
                 ip_addr.addr.in4, 1, &ip_addr);
@@ -2233,18 +2243,17 @@ process_cmd_sourcestats(char *line)
   CMD_Request request;
   CMD_Reply reply;
   uint32_t i, n_sources;
-  int verbose = 0;
+  int all, verbose;
   char name[256];
   IPAddr ip_addr;
 
-  verbose = check_for_verbose_flag(line);
+  parse_sources_options(line, &all, &verbose);
 
   request.command = htons(REQ_N_SOURCES);
   if (!request_reply(&request, &reply, RPY_N_SOURCES, 0))
     return 0;
 
   n_sources = ntohl(reply.data.n_sources.n_sources);
-  print_info_field("210 Number of sources = %lu\n", (unsigned long)n_sources);
 
   if (verbose) {
     printf("                             .- Number of sample points in measurement set.\n");
@@ -2269,6 +2278,9 @@ process_cmd_sourcestats(char *line)
       return 0;
 
     UTI_IPNetworkToHost(&reply.data.sourcestats.ip_addr, &ip_addr);
+    if (!all && ip_addr.family == IPADDR_ID)
+      continue;
+
     format_name(name, sizeof (name), 25, ip_addr.family == IPADDR_UNSPEC,
                 ntohl(reply.data.sourcestats.ref_id), 1, &ip_addr);
 
@@ -2382,6 +2394,8 @@ process_cmd_ntpdata(char *line)
         continue;
 
       UTI_IPNetworkToHost(&reply.data.source_data.ip_addr, &remote_addr);
+      if (!UTI_IsIPReal(&remote_addr))
+        continue;
     }
 
     request.command = htons(REQ_NTP_DATA);

doc/chronyc.adoc

@@ -291,15 +291,18 @@ milliseconds.
 
 === Time sources
 
-[[sources]]*sources* [*-v*]::
+[[sources]]*sources* [*-a*] [*-v*]::
 This command displays information about the current time sources that *chronyd*
 is accessing.
 +
-The optional argument *-v* can be specified, meaning _verbose_. In this case,
+If the *-a* option is specified, all sources are displayed, including those that
+do not have a known address yet. Such sources have an identifier in the format
+_ID#XXXXXXXXXX_, which can be used in other commands expecting a source address.
++
+The *-v* option enables a verbose output. In this case,
 extra caption lines are shown as a reminder of the meanings of the columns.
 +
 ----
-210 Number of sources = 3
 MS Name/IP address         Stratum Poll Reach LastRx Last sample
 ===============================================================================
 #* GPS0                          0   4   377    11   -479ns[ -621ns] +/-  134ns
@@ -360,18 +363,21 @@ since. The number following the _+/-_ indicator shows the margin of error in
 the measurement. Positive offsets indicate that the local clock is ahead of
 the source.
 
-[[sourcestats]]*sourcestats* [*-v*]::
+[[sourcestats]]*sourcestats* [*-a*] [*-v*]::
 The *sourcestats* command displays information about the drift rate and offset
 estimation process for each of the sources currently being examined by
 *chronyd*.
 +
-The optional argument *-v* can be specified, meaning _verbose_. In this case,
+If the *-a* option is specified, all sources are displayed, including those that
+do not have a known address yet. Such sources have an identifier in the format
+_ID#XXXXXXXXXX_, which can be used in other commands expecting a source address.
++
+The *-v* option enables a verbose output. In this case,
 extra caption lines are shown as a reminder of the meanings of the columns.
 +
 An example report is:
 +
 ----
-210 Number of sources = 1
 Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
 ===============================================================================
 foo.example.net            11   5   46m     -0.001      0.045      1us    25us
@@ -449,8 +455,9 @@ not visible in the *sources* and *sourcestats* reports.
 
 [[ntpdata]]*ntpdata* [_address_]::
 The *ntpdata* command displays the last valid measurement and other
-NTP-specific information about the specified NTP source, or all NTP sources if
+NTP-specific information about the specified NTP source, or all NTP sources
-no address was specified. An example of the output is shown below.
+(with a known address) if no address was specified. An example of the output is
+shown below.
 +
 ----
 Remote address  : 203.0.113.15 (CB00710F)

test/simulation/110-chronyc

@@ -43,12 +43,10 @@ Root delay      : 0\.000...... seconds
 Root dispersion : 0\.000...... seconds
 Update interval : [0-9]+\.. seconds
 Leap status     : Normal
-210 Number of sources = 2
 MS Name/IP address         Stratum Poll Reach LastRx Last sample               
 ===============================================================================
 #\? SHM0                          0   4   377    [0-9]+ [0-9 +-]+[un]s\[[0-9 +-]+[un]s\] \+/-[ 0-9]+[un]s
 \^\* 192\.168\.123\.1                 1   [67]   377    [0-9]+ [0-9 +-]+[un]s\[[0-9 +-]+[un]s\] \+/-[ 0-9]+[un]s
-210 Number of sources = 2
 Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
 ==============================================================================
 SHM0                       [0-9 ]+ [0-9 ]+ [0-9 ]+ [ +-][01]\.... [0-9 ]+\....  [0-9 +-]+[un]s [0-9 ]+[un]s
@@ -106,6 +104,7 @@ for chronyc_conf in \
 	"cmddeny all 1.2.3.0/24" \
 	"cyclelogs" \
 	"delete 10.0.0.0" \
+	"delete ID#0000000001" \
 	"deny 1.2.3.4" \
 	"deny all 1.2.3.0/24" \
 	"dfreq 1.0e-3" \
@@ -126,6 +125,7 @@ for chronyc_conf in \
 	"maxupdateskew 1.2.3.4 10.0" \
 	"minpoll 1.2.3.4 3" \
 	"minstratum 1.2.3.4 1" \
+	"minstratum ID#0000000001 1" \
 	"ntpdata 1.2.3.4" \
 	"offline" \
 	"offline 255.255.255.0/1.2.3.0" \