IP applet by Bastian Blank <waldi@debian.org>

networking/libiproute/rt_names.c

@@ -0,0 +1,389 @@
+/*
+ * rt_names.c		rtnetlink names DB.
+ *
+ *		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 <string.h>
+#include <sys/time.h>
+#include <stdint.h>
+
+static void rtnl_tab_initialize(char *file, char **tab, int size)
+{
+	char buf[512];
+	FILE *fp;
+
+	fp = fopen(file, "r");
+	if (!fp)
+		return;
+	while (fgets(buf, sizeof(buf), fp)) {
+		char *p = buf;
+		int id;
+		char namebuf[512];
+
+		while (*p == ' ' || *p == '\t')
+			p++;
+		if (*p == '#' || *p == '\n' || *p == 0)
+			continue;
+		if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
+		    sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
+		    sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
+		    sscanf(p, "%d %s #", &id, namebuf) != 2) {
+			fprintf(stderr, "Database %s is corrupted at %s\n",
+				file, p);
+			return;
+		}
+
+		if (id<0 || id>size)
+			continue;
+
+		tab[id] = strdup(namebuf);
+	}
+	fclose(fp);
+}
+
+
+static char * rtnl_rtprot_tab[256] = {
+	"none",
+	"redirect",
+	"kernel",
+	"boot",
+	"static",
+	NULL,
+	NULL,
+	NULL,
+	"gated",
+	"ra",
+	"mrt",
+	"zebra",
+	"bird",
+};
+
+
+
+static int rtnl_rtprot_init;
+
+static void rtnl_rtprot_initialize(void)
+{
+	rtnl_rtprot_init = 1;
+	rtnl_tab_initialize("/etc/iproute2/rt_protos",
+			    rtnl_rtprot_tab, 256);
+}
+
+char * rtnl_rtprot_n2a(int id, char *buf, int len)
+{
+	if (id<0 || id>=256) {
+		snprintf(buf, len, "%d", id);
+		return buf;
+	}
+	if (!rtnl_rtprot_tab[id]) {
+		if (!rtnl_rtprot_init)
+			rtnl_rtprot_initialize();
+	}
+	if (rtnl_rtprot_tab[id])
+		return rtnl_rtprot_tab[id];
+	snprintf(buf, len, "%d", id);
+	return buf;
+}
+
+int rtnl_rtprot_a2n(uint32_t *id, char *arg)
+{
+	static char *cache = NULL;
+	static unsigned long res;
+	char *end;
+	int i;
+
+	if (cache && strcmp(cache, arg) == 0) {
+		*id = res;
+		return 0;
+	}
+
+	if (!rtnl_rtprot_init)
+		rtnl_rtprot_initialize();
+
+	for (i=0; i<256; i++) {
+		if (rtnl_rtprot_tab[i] &&
+		    strcmp(rtnl_rtprot_tab[i], arg) == 0) {
+			cache = rtnl_rtprot_tab[i];
+			res = i;
+			*id = res;
+			return 0;
+		}
+	}
+
+	res = strtoul(arg, &end, 0);
+	if (!end || end == arg || *end || res > 255)
+		return -1;
+	*id = res;
+	return 0;
+}
+
+
+
+static char * rtnl_rtscope_tab[256] = {
+	"global",
+};
+
+static int rtnl_rtscope_init;
+
+static void rtnl_rtscope_initialize(void)
+{
+	rtnl_rtscope_init = 1;
+	rtnl_rtscope_tab[255] = "nowhere";
+	rtnl_rtscope_tab[254] = "host";
+	rtnl_rtscope_tab[253] = "link";
+	rtnl_rtscope_tab[200] = "site";
+	rtnl_tab_initialize("/etc/iproute2/rt_scopes",
+			    rtnl_rtscope_tab, 256);
+}
+
+char * rtnl_rtscope_n2a(int id, char *buf, int len)
+{
+	if (id<0 || id>=256) {
+		snprintf(buf, len, "%d", id);
+		return buf;
+	}
+	if (!rtnl_rtscope_tab[id]) {
+		if (!rtnl_rtscope_init)
+			rtnl_rtscope_initialize();
+	}
+	if (rtnl_rtscope_tab[id])
+		return rtnl_rtscope_tab[id];
+	snprintf(buf, len, "%d", id);
+	return buf;
+}
+
+int rtnl_rtscope_a2n(uint32_t *id, char *arg)
+{
+	static char *cache = NULL;
+	static unsigned long res;
+	char *end;
+	int i;
+
+	if (cache && strcmp(cache, arg) == 0) {
+		*id = res;
+		return 0;
+	}
+
+	if (!rtnl_rtscope_init)
+		rtnl_rtscope_initialize();
+
+	for (i=0; i<256; i++) {
+		if (rtnl_rtscope_tab[i] &&
+		    strcmp(rtnl_rtscope_tab[i], arg) == 0) {
+			cache = rtnl_rtscope_tab[i];
+			res = i;
+			*id = res;
+			return 0;
+		}
+	}
+
+	res = strtoul(arg, &end, 0);
+	if (!end || end == arg || *end || res > 255)
+		return -1;
+	*id = res;
+	return 0;
+}
+
+
+
+static char * rtnl_rtrealm_tab[256] = {
+	"unknown",
+};
+
+static int rtnl_rtrealm_init;
+
+static void rtnl_rtrealm_initialize(void)
+{
+	rtnl_rtrealm_init = 1;
+	rtnl_tab_initialize("/etc/iproute2/rt_realms",
+			    rtnl_rtrealm_tab, 256);
+}
+
+char * rtnl_rtrealm_n2a(int id, char *buf, int len)
+{
+	if (id<0 || id>=256) {
+		snprintf(buf, len, "%d", id);
+		return buf;
+	}
+	if (!rtnl_rtrealm_tab[id]) {
+		if (!rtnl_rtrealm_init)
+			rtnl_rtrealm_initialize();
+	}
+	if (rtnl_rtrealm_tab[id])
+		return rtnl_rtrealm_tab[id];
+	snprintf(buf, len, "%d", id);
+	return buf;
+}
+
+
+int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
+{
+	static char *cache = NULL;
+	static unsigned long res;
+	char *end;
+	int i;
+
+	if (cache && strcmp(cache, arg) == 0) {
+		*id = res;
+		return 0;
+	}
+
+	if (!rtnl_rtrealm_init)
+		rtnl_rtrealm_initialize();
+
+	for (i=0; i<256; i++) {
+		if (rtnl_rtrealm_tab[i] &&
+		    strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
+			cache = rtnl_rtrealm_tab[i];
+			res = i;
+			*id = res;
+			return 0;
+		}
+	}
+
+	res = strtoul(arg, &end, 0);
+	if (!end || end == arg || *end || res > 255)
+		return -1;
+	*id = res;
+	return 0;
+}
+
+
+
+static char * rtnl_rttable_tab[256] = {
+	"unspec",
+};
+
+static int rtnl_rttable_init;
+
+static void rtnl_rttable_initialize(void)
+{
+	rtnl_rttable_init = 1;
+	rtnl_rttable_tab[255] = "local";
+	rtnl_rttable_tab[254] = "main";
+	rtnl_tab_initialize("/etc/iproute2/rt_tables",
+			    rtnl_rttable_tab, 256);
+}
+
+char * rtnl_rttable_n2a(int id, char *buf, int len)
+{
+	if (id<0 || id>=256) {
+		snprintf(buf, len, "%d", id);
+		return buf;
+	}
+	if (!rtnl_rttable_tab[id]) {
+		if (!rtnl_rttable_init)
+			rtnl_rttable_initialize();
+	}
+	if (rtnl_rttable_tab[id])
+		return rtnl_rttable_tab[id];
+	snprintf(buf, len, "%d", id);
+	return buf;
+}
+
+int rtnl_rttable_a2n(uint32_t *id, char *arg)
+{
+	static char *cache = NULL;
+	static unsigned long res;
+	char *end;
+	int i;
+
+	if (cache && strcmp(cache, arg) == 0) {
+		*id = res;
+		return 0;
+	}
+
+	if (!rtnl_rttable_init)
+		rtnl_rttable_initialize();
+
+	for (i=0; i<256; i++) {
+		if (rtnl_rttable_tab[i] &&
+		    strcmp(rtnl_rttable_tab[i], arg) == 0) {
+			cache = rtnl_rttable_tab[i];
+			res = i;
+			*id = res;
+			return 0;
+		}
+	}
+
+	i = strtoul(arg, &end, 0);
+	if (!end || end == arg || *end || i > 255)
+		return -1;
+	*id = i;
+	return 0;
+}
+
+
+static char * rtnl_rtdsfield_tab[256] = {
+	"0",
+};
+
+static int rtnl_rtdsfield_init;
+
+static void rtnl_rtdsfield_initialize(void)
+{
+	rtnl_rtdsfield_init = 1;
+	rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
+			    rtnl_rtdsfield_tab, 256);
+}
+
+char * rtnl_dsfield_n2a(int id, char *buf, int len)
+{
+	if (id<0 || id>=256) {
+		snprintf(buf, len, "%d", id);
+		return buf;
+	}
+	if (!rtnl_rtdsfield_tab[id]) {
+		if (!rtnl_rtdsfield_init)
+			rtnl_rtdsfield_initialize();
+	}
+	if (rtnl_rtdsfield_tab[id])
+		return rtnl_rtdsfield_tab[id];
+	snprintf(buf, len, "0x%02x", id);
+	return buf;
+}
+
+
+int rtnl_dsfield_a2n(uint32_t *id, char *arg)
+{
+	static char *cache = NULL;
+	static unsigned long res;
+	char *end;
+	int i;
+
+	if (cache && strcmp(cache, arg) == 0) {
+		*id = res;
+		return 0;
+	}
+
+	if (!rtnl_rtdsfield_init)
+		rtnl_rtdsfield_initialize();
+
+	for (i=0; i<256; i++) {
+		if (rtnl_rtdsfield_tab[i] &&
+		    strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
+			cache = rtnl_rtdsfield_tab[i];
+			res = i;
+			*id = res;
+			return 0;
+		}
+	}
+
+	res = strtoul(arg, &end, 16);
+	if (!end || end == arg || *end || res > 255)
+		return -1;
+	*id = res;
+	return 0;
+}
+