linux-kernel - [PATCH V2 10/18] Tools: hv: Gather ipv[4,6] gateway information

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1344877627-21779-10-git-send-email-kys@microsoft.com>
Date:	Mon, 13 Aug 2012 10:06:59 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org,
	olaf@...fle.de, apw@...onical.com, ben@...adent.org.uk
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>
Subject: [PATCH V2 10/18] Tools: hv: Gather ipv[4,6] gateway information

Gather information on the default gateways - ipv4/ipv6.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@...rosoft.com>
Reviewed-by: Olaf Hering <olaf@...fle.de>
Reviewed-by: Ben Hutchings <ben@...adent.org.uk>
---
 tools/hv/hv_kvp_daemon.c |   68 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 68 insertions(+), 0 deletions(-)

diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index a63e83a..65d54c8 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -491,6 +491,68 @@ done:
 	return;
 }
 
+static void kvp_process_ipconfig_file(char *cmd,
+					char *config_buf, int len,
+					int element_size, int offset)
+{
+	char buf[256];
+	char *p;
+	char *x;
+	FILE *file;
+
+	/*
+	 * First execute the command.
+	 */
+	file = popen(cmd, "r");
+	if (file == NULL)
+		return;
+
+	if (offset == 0)
+		memset(config_buf, 0, len);
+	while ((p = fgets(buf, sizeof(buf), file)) != NULL) {
+		if ((len - strlen(config_buf)) < (element_size + 1))
+			break;
+
+		x = strchr(p, '\n');
+		*x = '\0';
+		strcat(config_buf, p);
+		strcat(config_buf, ";");
+	}
+	pclose(file);
+}
+
+static void kvp_get_ipconfig_info(char *if_name,
+				 struct hv_kvp_ipaddr_value *buffer)
+{
+	char cmd[512];
+
+	/*
+	 * Get the address of default gateway (ipv4).
+	 */
+	sprintf(cmd, "%s %s", "ip route show dev", if_name);
+	strcat(cmd, " | awk '/default/ {print $3 }'");
+
+	/*
+	 * Execute the command to gather gateway info.
+	 */
+	kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
+				(MAX_GATEWAY_SIZE * 2), INET_ADDRSTRLEN, 0);
+
+	/*
+	 * Get the address of default gateway (ipv6).
+	 */
+	sprintf(cmd, "%s %s", "ip -f inet6  route show dev", if_name);
+	strcat(cmd, " | awk '/default/ {print $3 }'");
+
+	/*
+	 * Execute the command to gather gateway info (ipv6).
+	 */
+	kvp_process_ipconfig_file(cmd, (char *)buffer->gate_way,
+				(MAX_GATEWAY_SIZE * 2), INET6_ADDRSTRLEN, 1);
+
+}
+
+
 static unsigned int hweight32(unsigned int *w)
 {
 	unsigned int res = *w - ((*w >> 1) & 0x55555555);
@@ -650,6 +712,12 @@ kvp_get_ip_address(int family, char *if_name, int op,
 				strcat((char *)ip_buffer->sub_net, ";");
 				sn_offset += strlen(sn_str) + 1;
 			}
+
+			/*
+			 * Collect other ip related configuration info.
+			 */
+
+			kvp_get_ipconfig_info(if_name, ip_buffer);
 		}
 
 gather_ipaddr:
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/