1 files changed, 60 insertions, 0 deletions
diff --git a/fw_packets.c b/fw_packets.c
new file mode 100644
index 0000000..06367dd
--- /dev/null
+++ b/fw_packets.c
@@ -0,0 +1,60 @@
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <ctype.h>
+#include "common.h"
+
+int fw_packets(int argc, char **argv) {
+	FILE *f;
+	char buff[1024], *s;
+	if(argc > 1) {
+		if(!strcmp(argv[1], "config")) {
+			puts("graph_title Firewall Throughput\n"
+				"graph_args --base 1000 -l 0\n"
+				"graph_vlabel Packets/${graph_period}\n"
+				"graph_category network\n"
+				"received.label Received\n"
+				"received.draw AREA\n"
+				"received.type DERIVE\n"
+				"received.min 0\n"
+				"forwarded.label Forwarded\n"
+				"forwarded.draw LINE2\n"
+				"forwarded.type DERIVE\n"
+				"forwarded.min 0");
+			return 0;
+		}
+		if(!strcmp(argv[1], "autoconf")) {
+			if(0 == access("/proc/net/snmp", R_OK))
+				return writeyes();
+			else
+				return writeno("/proc/net/snmp not readable");
+		}
+	}
+	if(!(f=fopen("/proc/net/snmp", "r"))) {
+		fputs("cannot open /proc/net/snmp\n", stderr);
+		return 1;
+	}
+	while(fgets(buff, 1024, f)) {
+		if(!strncmp(buff, "Ip: ", 4) && isdigit(buff[4])) {
+			fclose(f);
+			if(!(s = strtok(buff+4, " \t")))
+				break;
+			if(!(s = strtok(NULL, " \t")))
+				break;
+			if(!(s = strtok(NULL, " \t")))
+				break;
+			printf("received.value %s\n", s);
+			if(!(s = strtok(NULL, " \t")))
+				break;
+			if(!(s = strtok(NULL, " \t")))
+				break;
+			if(!(s = strtok(NULL, " \t")))
+				break;
+			printf("forwarded.value %s\n", s);
+			return 0;
+		}
+	}
+	fclose(f);
+	fputs("no ip line found in /proc/net/snmp\n", stderr);
+	return 1;
+}