netdev - [PATCH iproute2-next v2 02/12] ipaddrlabel: add json support

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Message-Id: <20180306210720.19802-3-stephen@networkplumber.org>
Date:   Tue,  6 Mar 2018 13:07:10 -0800
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     dsahern@...il.com
Cc:     netdev@...r.kernel.org, Stephen Hemminger <sthemmin@...rosoft.com>,
        Stephen Hemminger <stephen@...workplumber.org>
Subject: [PATCH iproute2-next v2 02/12] ipaddrlabel: add json support

From: Stephen Hemminger <sthemmin@...rosoft.com>

Add missing json and color support to addrlabel display

Example:
$ ip -j -p addrlabel
[ {
        "address": "::1",
        "prefixlen": 128,
        "label": 56
    },{
        "address": "::",
        "prefixlen": 96,
        "label": 56
    },{
...

Signed-off-by: Stephen Hemminger <stephen@...workplumber.org>
---
 ip/ipaddrlabel.c | 40 +++++++++++++++++++++++++++-------------
 1 file changed, 27 insertions(+), 13 deletions(-)

diff --git a/ip/ipaddrlabel.c b/ip/ipaddrlabel.c
index 7200bf542929..2f79c56dcead 100644
--- a/ip/ipaddrlabel.c
+++ b/ip/ipaddrlabel.c
@@ -38,6 +38,7 @@
 #include "rt_names.h"
 #include "utils.h"
 #include "ip_common.h"
+#include "json_print.h"
 
 #define IFAL_RTA(r)	((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrlblmsg))))
 #define IFAL_PAYLOAD(n)	NLMSG_PAYLOAD(n, sizeof(struct ifaddrlblmsg))
@@ -55,7 +56,6 @@ static void usage(void)
 
 int print_addrlabel(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
 {
-	FILE *fp = (FILE *)arg;
 	struct ifaddrlblmsg *ifal = NLMSG_DATA(n);
 	int len = n->nlmsg_len;
 	struct rtattr *tb[IFAL_MAX+1];
@@ -69,28 +69,40 @@ int print_addrlabel(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg
 
 	parse_rtattr(tb, IFAL_MAX, IFAL_RTA(ifal), len);
 
+	open_json_object(NULL);
 	if (n->nlmsg_type == RTM_DELADDRLABEL)
-		fprintf(fp, "Deleted ");
+		print_bool(PRINT_ANY, "deleted", "Deleted ", true);
 
 	if (tb[IFAL_ADDRESS]) {
-		fprintf(fp, "prefix %s/%u ",
-			format_host_rta(ifal->ifal_family,
-		                        tb[IFAL_ADDRESS]),
-			ifal->ifal_prefixlen);
+		const char *host
+			= format_host_rta(ifal->ifal_family,
+					  tb[IFAL_ADDRESS]);
+
+		print_string(PRINT_FP, NULL, "prefix ", NULL);
+		print_color_string(PRINT_ANY,
+				   ifa_family_color(ifal->ifal_family),
+				   "address", "%s", host);
+
+		print_uint(PRINT_ANY, "prefixlen", "/%u ",
+			   ifal->ifal_prefixlen);
 	}
 
-	if (ifal->ifal_index)
-		fprintf(fp, "dev %s ", ll_index_to_name(ifal->ifal_index));
+	if (ifal->ifal_index) {
+		print_string(PRINT_FP, NULL, "dev ", NULL);
+		print_color_string(PRINT_ANY, COLOR_IFNAME,
+				   "ifname", "%s ",
+				   ll_index_to_name(ifal->ifal_index));
+	}
 
 	if (tb[IFAL_LABEL] && RTA_PAYLOAD(tb[IFAL_LABEL]) == sizeof(uint32_t)) {
-		uint32_t label;
+		uint32_t label = rta_getattr_u32(RTA_DATA(tb[IFAL_LABEL]));
 
-		memcpy(&label, RTA_DATA(tb[IFAL_LABEL]), sizeof(label));
-		fprintf(fp, "label %u ", label);
+		print_uint(PRINT_ANY,
+			   "label", "label %u ", label);
 	}
+	print_string(PRINT_FP, NULL, "\n", "");
+	close_json_object();
 
-	fprintf(fp, "\n");
-	fflush(fp);
 	return 0;
 }
 
@@ -111,10 +123,12 @@ static int ipaddrlabel_list(int argc, char **argv)
 		return 1;
 	}
 
+	new_json_obj(json);
 	if (rtnl_dump_filter(&rth, print_addrlabel, stdout) < 0) {
 		fprintf(stderr, "Dump terminated\n");
 		return 1;
 	}
+	delete_json_obj();
 
 	return 0;
 }
-- 
2.16.1