This commit was generated by cvs2svn to compensate for changes in r1650,

[iproute2.git] / lib / inet_proto.c

diff --git a/lib/inet_proto.c b/lib/inet_proto.c
new file mode 100644 (file)
index 0000000..a55e0e7
--- /dev/null
+++ b/lib/inet_proto.c
@@ -0,0 +1,70 @@
+/*
+ * inet_proto.c
+ *
+ *             This program is free software; you can redistribute it and/or
+ *             modify it under the terms of the GNU General Public License
+ *             as published by the Free Software Foundation; either version
+ *             2 of the License, or (at your option) any later version.
+ *
+ * Authors:    Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <string.h>
+
+#include "utils.h"
+
+char *inet_proto_n2a(int proto, char *buf, int len)
+{
+       static char ncache[16];
+       static int icache = -1;
+       struct protoent *pe;
+
+       if (proto == icache)
+               return ncache;
+
+       pe = getprotobynumber(proto);
+       if (pe) {
+               icache = proto;
+               strncpy(ncache, pe->p_name, 16);
+               strncpy(buf, pe->p_name, len);
+               return buf;
+       }
+       snprintf(buf, len, "ipproto-%d", proto);
+       return buf;
+}
+
+int inet_proto_a2n(char *buf)
+{
+       static char ncache[16];
+       static int icache = -1;
+       struct protoent *pe;
+
+       if (icache>=0 && strcmp(ncache, buf) == 0)
+               return icache;
+
+       if (buf[0] >= '0' && buf[0] <= '9') {
+               __u8 ret;
+               if (get_u8(&ret, buf, 10))
+                       return -1;
+               return ret;
+       }
+
+       pe = getprotobyname(buf);
+       if (pe) {
+               icache = pe->p_proto;
+               strncpy(ncache, pe->p_name, 16);
+               return pe->p_proto;
+       }
+       return -1;
+}
+
+