From 832f09cf750058a374ebafb321e2673c8d40f7f4 Mon Sep 17 00:00:00 2001
From: Bart De Schuymer <bdschuym@pandora.be>
Date: Wed, 20 Nov 2002 19:40:28 +0000
Subject: *** empty log message ***

---
 getethertype.c | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 getethertype.c

(limited to 'getethertype.c')

diff --git a/getethertype.c b/getethertype.c
new file mode 100644
index 0000000..f33f2a6
--- /dev/null
+++ b/getethertype.c
@@ -0,0 +1,163 @@
+/*
+* getethertype.c
+*
+* This file was part of the NYS Library.
+*
+** The NYS Library is free software; you can redistribute it and/or
+** modify it under the terms of the GNU Library General Public License as
+** published by the Free Software Foundation; either version 2 of the
+** License, or (at your option) any later version.
+*
+* 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.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/********************************************************************
+* Description: /etc/ethertypes database access functions
+* Author: Nick Fedchik <fnm@ukrsat.com>
+* Checker: Bart De Schuymer <bdschuym@pandora.be>
+* Origin: uClibc-0.9.16/libc/inet/getproto.c
+* Created at: Mon Nov 11 12:20:11 EET 2002
+* Computer: firebox.ukrsat.com 
+* System: Linux 2.4.18-alt6master-up on i686
+********************************************************************/
+
+
+#include <ctype.h>
+#include <features.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <netinet/ether.h>
+#include <net/ethernet.h>
+
+#include "ethernetdb.h"
+
+#define	MAXALIASES	35
+
+static FILE *etherf = NULL;
+static char line[BUFSIZ + 1];
+static struct ethertypeent et_ent;
+static char *ethertype_aliases[MAXALIASES];
+static int ethertype_stayopen;
+
+void setethertypeent(int f)
+{
+	if (etherf == NULL)
+		etherf = fopen(_PATH_ETHERTYPES, "r");
+	else
+		rewind(etherf);
+	ethertype_stayopen |= f;
+}
+
+void endethertypeent(void)
+{
+	if (etherf) {
+		fclose(etherf);
+		etherf = NULL;
+	}
+	ethertype_stayopen = 0;
+}
+
+struct ethertypeent *getethertypeent(void)
+{
+	char *e;
+	char *endptr;
+	register char *cp, **q;
+
+	if (etherf == NULL
+	    && (etherf = fopen(_PATH_ETHERTYPES, "r")) == NULL) {
+		return (NULL);
+	}
+
+again:
+	if ((e = fgets(line, BUFSIZ, etherf)) == NULL) {
+		return (NULL);
+	}
+	if (*e == '#')
+		goto again;
+	cp = strpbrk(e, "#\n");
+	if (cp == NULL)
+		goto again;
+	*cp = '\0';
+	et_ent.e_name = e;
+	cp = strpbrk(e, " \t");
+	if (cp == NULL)
+		goto again;
+	*cp++ = '\0';
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	e = strpbrk(cp, " \t");
+	if (e != NULL)
+		*e++ = '\0';
+// Check point
+	et_ent.e_ethertype = strtol(cp, &endptr, 16);
+	if (*endptr != '\0'
+	    || (et_ent.e_ethertype < ETH_ZLEN
+		|| et_ent.e_ethertype > 0xFFFF))
+		goto again;	// Skip invalid etherproto type entry
+	q = et_ent.e_aliases = ethertype_aliases;
+	if (e != NULL) {
+		cp = e;
+		while (cp && *cp) {
+			if (*cp == ' ' || *cp == '\t') {
+				cp++;
+				continue;
+			}
+			if (q < &ethertype_aliases[MAXALIASES - 1])
+				*q++ = cp;
+			cp = strpbrk(cp, " \t");
+			if (cp != NULL)
+				*cp++ = '\0';
+		}
+	}
+	*q = NULL;
+	return (&et_ent);
+}
+
+
+struct ethertypeent *getethertypebyname(const char *name)
+{
+	register struct ethertypeent *e;
+	register char **cp;
+
+	setethertypeent(ethertype_stayopen);
+	while ((e = getethertypeent()) != NULL) {
+		if (strcasecmp(e->e_name, name) == 0)
+			break;
+		for (cp = e->e_aliases; *cp != 0; cp++)
+			if (strcasecmp(*cp, name) == 0)
+				goto found;
+	}
+found:
+	if (!ethertype_stayopen)
+		endethertypeent();
+	return (e);
+}
+
+struct ethertypeent *getethertypebynumber(int type)
+{
+	register struct ethertypeent *e;
+
+	setethertypeent(ethertype_stayopen);
+	while ((e = getethertypeent()) != NULL)
+		if (e->e_ethertype == type)
+			break;
+	if (!ethertype_stayopen)
+		endethertypeent();
+	return (e);
+}
-- 
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