From: Stephen Hemminger <sthem...@microsoft.com>

Add JSON (and limited color) to ip neighbor table parameter output.

Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 ip/ipntable.c | 402 +++++++++++++++++++++++++++++++---------------------------
 1 file changed, 213 insertions(+), 189 deletions(-)

diff --git a/ip/ipntable.c b/ip/ipntable.c
index 2f72c989f35d..92024864a784 100644
--- a/ip/ipntable.c
+++ b/ip/ipntable.c
@@ -31,6 +31,7 @@
 
 #include "utils.h"
 #include "ip_common.h"
+#include "json_print.h"
 
 static struct
 {
@@ -338,274 +339,295 @@ static const char *ntable_strtime_delta(__u32 msec)
        return str;
 }
 
-static int print_ntable(const struct sockaddr_nl *who, struct nlmsghdr *n, 
void *arg)
+static void print_ndtconfig(const struct ndt_config *ndtc)
 {
-       FILE *fp = (FILE *)arg;
-       struct ndtmsg *ndtm = NLMSG_DATA(n);
-       int len = n->nlmsg_len;
-       struct rtattr *tb[NDTA_MAX+1];
-       struct rtattr *tpb[NDTPA_MAX+1];
-       int ret;
 
-       if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
-               fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
-                       n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
-               return 0;
-       }
-       len -= NLMSG_LENGTH(sizeof(*ndtm));
-       if (len < 0) {
-               fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
-               return -1;
-       }
+       print_uint(PRINT_ANY, "key_length",
+                  "    config key_len %u ", ndtc->ndtc_key_len);
+       print_uint(PRINT_ANY, "entry_size",
+                  "entry_size %u ", ndtc->ndtc_entry_size);
+       print_uint(PRINT_ANY, "entries", "entries %u ", ndtc->ndtc_entries);
 
-       if (preferred_family && preferred_family != ndtm->ndtm_family)
-               return 0;
+       print_string(PRINT_FP, NULL, "%s", _SL_);
 
-       parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
-                    n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
+       print_string(PRINT_ANY, "last_flush",
+                    "        last_flush %s ",
+                    ntable_strtime_delta(ndtc->ndtc_last_flush));
+       print_string(PRINT_ANY, "last_rand",
+                    "last_rand %s ",
+                    ntable_strtime_delta(ndtc->ndtc_last_rand));
 
-       if (tb[NDTA_NAME]) {
-               const char *name = rta_getattr_str(tb[NDTA_NAME]);
+       print_string(PRINT_FP, NULL, "%s", _SL_);
 
-               if (filter.name && strcmp(filter.name, name))
-                       return 0;
-       }
-       if (tb[NDTA_PARMS]) {
-               parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
-                            RTA_PAYLOAD(tb[NDTA_PARMS]));
+       print_uint(PRINT_ANY, "hash_rnd",
+                  "        hash_rnd %u ", ndtc->ndtc_hash_rnd);
+       print_0xhex(PRINT_ANY, "hash_mask",
+                   "hash_mask %08x ", ndtc->ndtc_hash_mask);
 
-               if (tpb[NDTPA_IFINDEX]) {
-                       __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
+       print_uint(PRINT_ANY, "hash_chain_gc",
+                  "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
+       print_uint(PRINT_ANY, "proxy_qlen",
+                  "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
 
-                       if (filter.index && filter.index != ifindex)
-                               return 0;
-               } else {
-                       if (filter.index && filter.index != NONE_DEV)
-                               return 0;
-               }
+       print_string(PRINT_FP, NULL, "%s", _SL_);
+}
+
+static void print_ndtparams(struct rtattr *tpb[])
+{
+
+       if (tpb[NDTPA_IFINDEX]) {
+               __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
+
+               print_string(PRINT_FP, NULL, "    dev ", NULL);
+               print_color_string(PRINT_ANY, COLOR_IFNAME,
+                                  "dev", "%s ", ll_index_to_name(ifindex));
+               print_string(PRINT_FP, NULL, "%s", _SL_);
        }
 
-       if (ndtm->ndtm_family == AF_INET)
-               fprintf(fp, "inet ");
-       else if (ndtm->ndtm_family == AF_INET6)
-               fprintf(fp, "inet6 ");
-       else if (ndtm->ndtm_family == AF_DECnet)
-               fprintf(fp, "dnet ");
-       else
-               fprintf(fp, "(%d) ", ndtm->ndtm_family);
+       print_string(PRINT_FP, NULL, "    ", NULL);
+       if (tpb[NDTPA_REFCNT]) {
+               __u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
 
-       if (tb[NDTA_NAME]) {
-               const char *name = rta_getattr_str(tb[NDTA_NAME]);
+               print_uint(PRINT_ANY, "refcnt", "refcnt %u ", refcnt);
+       }
 
-               fprintf(fp, "%s ", name);
+       if (tpb[NDTPA_REACHABLE_TIME]) {
+               __u64 reachable = rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
+
+               print_uint(PRINT_ANY, "reachable",
+                          "reachable %llu ", reachable);
        }
 
-       fprintf(fp, "%s", _SL_);
+       if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
+               __u64 breachable
+                       = rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
 
-       ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
-              tb[NDTA_GC_INTERVAL]);
-       if (ret)
-               fprintf(fp, "    ");
+               print_uint(PRINT_ANY, "base_reachable",
+                          "base_reachable %llu ", breachable);
+       }
 
-       if (tb[NDTA_THRESH1]) {
-               __u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
+       if (tpb[NDTPA_RETRANS_TIME]) {
+               __u64 retrans = rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
 
-               fprintf(fp, "thresh1 %u ", thresh1);
+               print_uint(PRINT_ANY, "retrans", "retrans %llu ", retrans);
        }
-       if (tb[NDTA_THRESH2]) {
-               __u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
 
-               fprintf(fp, "thresh2 %u ", thresh2);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
+
+       if (tpb[NDTPA_GC_STALETIME]) {
+               __u64 gc_stale = rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
+
+               print_uint(PRINT_ANY, "gc_stale", "gc_stale %llu ", gc_stale);
        }
-       if (tb[NDTA_THRESH3]) {
-               __u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
 
-               fprintf(fp, "thresh3 %u ", thresh3);
+       if (tpb[NDTPA_DELAY_PROBE_TIME]) {
+               __u64 delay_probe
+                       = rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
+
+               print_uint(PRINT_ANY, "delay_probe",
+                          "delay_probe %llu ", delay_probe);
        }
-       if (tb[NDTA_GC_INTERVAL]) {
-               unsigned long long gc_int = 
rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
 
-               fprintf(fp, "gc_int %llu ", gc_int);
+       if (tpb[NDTPA_QUEUE_LEN]) {
+               __u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
+
+               print_uint(PRINT_ANY, "queue", "queue %u ", queue);
        }
 
-       if (ret)
-               fprintf(fp, "%s", _SL_);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
 
-       if (tb[NDTA_CONFIG] && show_stats) {
-               struct ndt_config *ndtc = RTA_DATA(tb[NDTA_CONFIG]);
+       if (tpb[NDTPA_APP_PROBES]) {
+               __u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
 
-               fprintf(fp, "    ");
-               fprintf(fp, "config ");
+               print_uint(PRINT_ANY, "app_probes", "app_probes %u ", aprobe);
+       }
 
-               fprintf(fp, "key_len %u ", ndtc->ndtc_key_len);
-               fprintf(fp, "entry_size %u ", ndtc->ndtc_entry_size);
-               fprintf(fp, "entries %u ", ndtc->ndtc_entries);
+       if (tpb[NDTPA_UCAST_PROBES]) {
+               __u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
 
-               fprintf(fp, "%s", _SL_);
-               fprintf(fp, "        ");
+               print_uint(PRINT_ANY, "ucast_probes",
+                          "ucast_probes %u ", uprobe);
+       }
 
-               fprintf(fp, "last_flush %s ",
-                       ntable_strtime_delta(ndtc->ndtc_last_flush));
-               fprintf(fp, "last_rand %s ",
-                       ntable_strtime_delta(ndtc->ndtc_last_rand));
+       if (tpb[NDTPA_MCAST_PROBES]) {
+               __u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
 
-               fprintf(fp, "%s", _SL_);
-               fprintf(fp, "        ");
+               print_uint(PRINT_ANY, "mcast_probes",
+                          "mcast_probes %u ", mprobe);
+       }
 
-               fprintf(fp, "hash_rnd %u ", ndtc->ndtc_hash_rnd);
-               fprintf(fp, "hash_mask %08x ", ndtc->ndtc_hash_mask);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
 
-               fprintf(fp, "hash_chain_gc %u ", ndtc->ndtc_hash_chain_gc);
-               fprintf(fp, "proxy_qlen %u ", ndtc->ndtc_proxy_qlen);
+       if (tpb[NDTPA_ANYCAST_DELAY]) {
+               __u64 anycast_delay = rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
 
-               fprintf(fp, "%s", _SL_);
+               print_uint(PRINT_ANY, "anycast_delay",
+                          "anycast_delay %llu ", anycast_delay);
        }
 
-       if (tb[NDTA_PARMS]) {
-               if (tpb[NDTPA_IFINDEX]) {
-                       __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
+       if (tpb[NDTPA_PROXY_DELAY]) {
+               __u64 proxy_delay = rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
 
-                       fprintf(fp, "    ");
-                       fprintf(fp, "dev %s ", ll_index_to_name(ifindex));
-                       fprintf(fp, "%s", _SL_);
-               }
+               print_uint(PRINT_ANY, "proxy_delay",
+                          "proxy_delay %llu ", proxy_delay);
+       }
 
-               fprintf(fp, "    ");
+       if (tpb[NDTPA_PROXY_QLEN]) {
+               __u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
 
-               if (tpb[NDTPA_REFCNT]) {
-                       __u32 refcnt = rta_getattr_u32(tpb[NDTPA_REFCNT]);
+               print_uint(PRINT_ANY, "proxy_queue", "proxy_queue %u ", pqueue);
+       }
 
-                       fprintf(fp, "refcnt %u ", refcnt);
-               }
-               if (tpb[NDTPA_REACHABLE_TIME]) {
-                       unsigned long long reachable = 
rta_getattr_u64(tpb[NDTPA_REACHABLE_TIME]);
+       if (tpb[NDTPA_LOCKTIME]) {
+               __u64 locktime = rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
 
-                       fprintf(fp, "reachable %llu ", reachable);
-               }
-               if (tpb[NDTPA_BASE_REACHABLE_TIME]) {
-                       unsigned long long breachable = 
rta_getattr_u64(tpb[NDTPA_BASE_REACHABLE_TIME]);
+               print_uint(PRINT_ANY, "locktime", "locktime %llu ", locktime);
+       }
 
-                       fprintf(fp, "base_reachable %llu ", breachable);
-               }
-               if (tpb[NDTPA_RETRANS_TIME]) {
-                       unsigned long long retrans = 
rta_getattr_u64(tpb[NDTPA_RETRANS_TIME]);
+       print_string(PRINT_FP, NULL, "%s", _SL_);
+}
 
-                       fprintf(fp, "retrans %llu ", retrans);
-               }
+static void print_ndtstats(const struct ndt_stats *ndts)
+{
 
-               fprintf(fp, "%s", _SL_);
+       print_string(PRINT_FP, NULL, "    stats ", NULL);
 
-               fprintf(fp, "    ");
+       print_uint(PRINT_ANY, "allocs", "allocs %llu ", ndts->ndts_allocs);
+       print_uint(PRINT_ANY, "destroys", "destroys %llu ",
+                  ndts->ndts_destroys);
+       print_uint(PRINT_ANY, "hash_grows", "hash_grows %llu ",
+                  ndts->ndts_hash_grows);
 
-               if (tpb[NDTPA_GC_STALETIME]) {
-                       unsigned long long gc_stale = 
rta_getattr_u64(tpb[NDTPA_GC_STALETIME]);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
 
-                       fprintf(fp, "gc_stale %llu ", gc_stale);
-               }
-               if (tpb[NDTPA_DELAY_PROBE_TIME]) {
-                       unsigned long long delay_probe = 
rta_getattr_u64(tpb[NDTPA_DELAY_PROBE_TIME]);
+       print_uint(PRINT_ANY, "res_failed", "res_failed %llu ",
+                  ndts->ndts_res_failed);
+       print_uint(PRINT_ANY, "lookups", "lookups %llu ", ndts->ndts_lookups);
+       print_uint(PRINT_ANY, "hits", "hits %llu ", ndts->ndts_hits);
 
-                       fprintf(fp, "delay_probe %llu ", delay_probe);
-               }
-               if (tpb[NDTPA_QUEUE_LEN]) {
-                       __u32 queue = rta_getattr_u32(tpb[NDTPA_QUEUE_LEN]);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
 
-                       fprintf(fp, "queue %u ", queue);
-               }
+       print_uint(PRINT_ANY, "rcv_probes_mcast", "rcv_probes_mcast %llu ",
+                  ndts->ndts_rcv_probes_mcast);
+       print_uint(PRINT_ANY, "rcv_probes_ucast", "rcv_probes_ucast %llu ",
+                  ndts->ndts_rcv_probes_ucast);
 
-               fprintf(fp, "%s", _SL_);
+       print_string(PRINT_FP, NULL, "%s    ", _SL_);
 
-               fprintf(fp, "    ");
+       print_uint(PRINT_ANY, "periodic_gc_runs", "periodic_gc_runs %llu ",
+                  ndts->ndts_periodic_gc_runs);
+       print_uint(PRINT_ANY, "forced_gc_runs", "forced_gc_runs %llu ",
+                  ndts->ndts_forced_gc_runs);
 
-               if (tpb[NDTPA_APP_PROBES]) {
-                       __u32 aprobe = rta_getattr_u32(tpb[NDTPA_APP_PROBES]);
+       print_string(PRINT_FP, NULL, "%s", _SL_);
+}
 
-                       fprintf(fp, "app_probes %u ", aprobe);
-               }
-               if (tpb[NDTPA_UCAST_PROBES]) {
-                       __u32 uprobe = rta_getattr_u32(tpb[NDTPA_UCAST_PROBES]);
+static int print_ntable(const struct sockaddr_nl *who,
+                       struct nlmsghdr *n, void *arg)
+{
+       FILE *fp = (FILE *)arg;
+       struct ndtmsg *ndtm = NLMSG_DATA(n);
+       int len = n->nlmsg_len;
+       struct rtattr *tb[NDTA_MAX+1];
+       struct rtattr *tpb[NDTPA_MAX+1];
+       int ret;
 
-                       fprintf(fp, "ucast_probes %u ", uprobe);
-               }
-               if (tpb[NDTPA_MCAST_PROBES]) {
-                       __u32 mprobe = rta_getattr_u32(tpb[NDTPA_MCAST_PROBES]);
+       if (n->nlmsg_type != RTM_NEWNEIGHTBL) {
+               fprintf(stderr, "Not NEIGHTBL: %08x %08x %08x\n",
+                       n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
+               return 0;
+       }
+       len -= NLMSG_LENGTH(sizeof(*ndtm));
+       if (len < 0) {
+               fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
+               return -1;
+       }
 
-                       fprintf(fp, "mcast_probes %u ", mprobe);
-               }
+       if (preferred_family && preferred_family != ndtm->ndtm_family)
+               return 0;
 
-               fprintf(fp, "%s", _SL_);
+       parse_rtattr(tb, NDTA_MAX, NDTA_RTA(ndtm),
+                    n->nlmsg_len - NLMSG_LENGTH(sizeof(*ndtm)));
 
-               fprintf(fp, "    ");
+       if (tb[NDTA_NAME]) {
+               const char *name = rta_getattr_str(tb[NDTA_NAME]);
+
+               if (filter.name && strcmp(filter.name, name))
+                       return 0;
+       }
 
-               if (tpb[NDTPA_ANYCAST_DELAY]) {
-                       unsigned long long anycast_delay = 
rta_getattr_u64(tpb[NDTPA_ANYCAST_DELAY]);
+       if (tb[NDTA_PARMS]) {
+               parse_rtattr(tpb, NDTPA_MAX, RTA_DATA(tb[NDTA_PARMS]),
+                            RTA_PAYLOAD(tb[NDTA_PARMS]));
 
-                       fprintf(fp, "anycast_delay %llu ", anycast_delay);
-               }
-               if (tpb[NDTPA_PROXY_DELAY]) {
-                       unsigned long long proxy_delay = 
rta_getattr_u64(tpb[NDTPA_PROXY_DELAY]);
+               if (tpb[NDTPA_IFINDEX]) {
+                       __u32 ifindex = rta_getattr_u32(tpb[NDTPA_IFINDEX]);
 
-                       fprintf(fp, "proxy_delay %llu ", proxy_delay);
+                       if (filter.index && filter.index != ifindex)
+                               return 0;
+               } else {
+                       if (filter.index && filter.index != NONE_DEV)
+                               return 0;
                }
-               if (tpb[NDTPA_PROXY_QLEN]) {
-                       __u32 pqueue = rta_getattr_u32(tpb[NDTPA_PROXY_QLEN]);
+       }
 
-                       fprintf(fp, "proxy_queue %u ", pqueue);
-               }
-               if (tpb[NDTPA_LOCKTIME]) {
-                       unsigned long long locktime = 
rta_getattr_u64(tpb[NDTPA_LOCKTIME]);
+       open_json_object(NULL);
+       print_string(PRINT_ANY, "family",
+                    "%s ", family_name(ndtm->ndtm_family));
 
-                       fprintf(fp, "locktime %llu ", locktime);
-               }
+       if (tb[NDTA_NAME]) {
+               const char *name = rta_getattr_str(tb[NDTA_NAME]);
 
-               fprintf(fp, "%s", _SL_);
+               print_string(PRINT_ANY, "name", "%s ", name);
        }
 
-       if (tb[NDTA_STATS] && show_stats) {
-               struct ndt_stats *ndts = RTA_DATA(tb[NDTA_STATS]);
+       print_string(PRINT_FP, NULL, "%s", _SL_);
 
-               fprintf(fp, "    ");
-               fprintf(fp, "stats ");
+       ret = (tb[NDTA_THRESH1] || tb[NDTA_THRESH2] || tb[NDTA_THRESH3] ||
+              tb[NDTA_GC_INTERVAL]);
+       if (ret)
+               print_string(PRINT_FP, NULL, "    ", NULL);
 
-               fprintf(fp, "allocs %llu ",
-                       (unsigned long long) ndts->ndts_allocs);
-               fprintf(fp, "destroys %llu ",
-                       (unsigned long long) ndts->ndts_destroys);
-               fprintf(fp, "hash_grows %llu ",
-                       (unsigned long long) ndts->ndts_hash_grows);
+       if (tb[NDTA_THRESH1]) {
+               __u32 thresh1 = rta_getattr_u32(tb[NDTA_THRESH1]);
 
-               fprintf(fp, "%s", _SL_);
-               fprintf(fp, "        ");
+               print_uint(PRINT_ANY, "thresh1", "thresh1 %u ", thresh1);
+       }
 
-               fprintf(fp, "res_failed %llu ",
-                       (unsigned long long) ndts->ndts_res_failed);
-               fprintf(fp, "lookups %llu ",
-                       (unsigned long long) ndts->ndts_lookups);
-               fprintf(fp, "hits %llu ",
-                       (unsigned long long) ndts->ndts_hits);
+       if (tb[NDTA_THRESH2]) {
+               __u32 thresh2 = rta_getattr_u32(tb[NDTA_THRESH2]);
 
-               fprintf(fp, "%s", _SL_);
-               fprintf(fp, "        ");
+               print_uint(PRINT_ANY, "thresh2", "thresh2 %u ", thresh2);
+       }
 
-               fprintf(fp, "rcv_probes_mcast %llu ",
-                       (unsigned long long) ndts->ndts_rcv_probes_mcast);
-               fprintf(fp, "rcv_probes_ucast %llu ",
-                       (unsigned long long) ndts->ndts_rcv_probes_ucast);
+       if (tb[NDTA_THRESH3]) {
+               __u32 thresh3 = rta_getattr_u32(tb[NDTA_THRESH3]);
 
-               fprintf(fp, "%s", _SL_);
-               fprintf(fp, "        ");
+               print_uint(PRINT_ANY, "thresh3", "thresh3 %u ", thresh3);
+       }
 
-               fprintf(fp, "periodic_gc_runs %llu ",
-                       (unsigned long long) ndts->ndts_periodic_gc_runs);
-               fprintf(fp, "forced_gc_runs %llu ",
-                       (unsigned long long) ndts->ndts_forced_gc_runs);
+       if (tb[NDTA_GC_INTERVAL]) {
+               __u64 gc_int = rta_getattr_u64(tb[NDTA_GC_INTERVAL]);
 
-               fprintf(fp, "%s", _SL_);
+               print_uint(PRINT_ANY, "gc_interval", "gc_int %llu ", gc_int);
        }
 
-       fprintf(fp, "\n");
+       if (ret)
+               print_string(PRINT_FP, NULL, "%s", _SL_);
 
+       if (tb[NDTA_CONFIG] && show_stats)
+               print_ndtconfig(RTA_DATA(tb[NDTA_CONFIG]));
+
+       if (tb[NDTA_PARMS])
+               print_ndtparams(tpb);
+
+       if (tb[NDTA_STATS] && show_stats)
+               print_ndtstats(RTA_DATA(tb[NDTA_STATS]));
+
+       print_string(PRINT_FP, NULL, "\n", "");
+       close_json_object();
        fflush(fp);
+
        return 0;
 }
 
@@ -643,10 +665,12 @@ static int ipntable_show(int argc, char **argv)
                exit(1);
        }
 
+       new_json_obj(json);
        if (rtnl_dump_filter(&rth, print_ntable, stdout) < 0) {
                fprintf(stderr, "Dump terminated\n");
                exit(1);
        }
+       delete_json_obj();
 
        return 0;
 }
-- 
2.16.1

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