Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/lib/snmp.c b/lib/snmp.c
new file mode 100644
index 0000000..d28e649
--- /dev/null
+++ b/lib/snmp.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* SNMP support
+ * Copyright (C) 1999 Kunihiro Ishiguro <kunihiro@zebra.org>
+ */
+
+#include <zebra.h>
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#include "smux.h"
+
+int oid_compare(const oid *o1, int o1_len, const oid *o2, int o2_len)
+{
+	int i;
+
+	for (i = 0; i < MIN(o1_len, o2_len); i++) {
+		if (o1[i] < o2[i])
+			return -1;
+		else if (o1[i] > o2[i])
+			return 1;
+	}
+	if (o1_len < o2_len)
+		return -1;
+	if (o1_len > o2_len)
+		return 1;
+
+	return 0;
+}
+
+void *oid_copy(void *dest, const void *src, size_t size)
+{
+	return memcpy(dest, src, size * sizeof(oid));
+}
+
+void oid2in_addr(oid oid[], int len, struct in_addr *addr)
+{
+	int i;
+	uint8_t *pnt;
+
+	if (len == 0)
+		return;
+
+	pnt = (uint8_t *)addr;
+
+	for (i = 0; i < len; i++)
+		*pnt++ = oid[i];
+}
+
+void oid2in6_addr(oid oid[], struct in6_addr *addr)
+{
+	unsigned int i;
+	uint8_t *pnt;
+
+	pnt = (uint8_t *)addr;
+
+	for (i = 0; i < sizeof(struct in6_addr); i++)
+		*pnt++ = oid[i];
+}
+
+void oid2int(oid oid[], int *dest)
+{
+	uint8_t i;
+	uint8_t *pnt;
+	int network_dest;
+
+	pnt = (uint8_t *)&network_dest;
+
+	for (i = 0; i < sizeof(int); i++)
+		*pnt++ = oid[i];
+	*dest = ntohl(network_dest);
+}
+
+void oid_copy_in_addr(oid oid[], const struct in_addr *addr)
+{
+	int i;
+	const uint8_t *pnt;
+	int len = sizeof(struct in_addr);
+
+	pnt = (uint8_t *)addr;
+
+	for (i = 0; i < len; i++)
+		oid[i] = *pnt++;
+}
+
+
+void oid_copy_in6_addr(oid oid[], const struct in6_addr *addr)
+{
+	int i;
+	const uint8_t *pnt;
+	int len = sizeof(struct in6_addr);
+
+	pnt = (uint8_t *)addr;
+
+	for (i = 0; i < len; i++)
+		oid[i] = *pnt++;
+}
+
+void oid_copy_int(oid oid[], int *val)
+{
+	uint8_t i;
+	const uint8_t *pnt;
+	int network_val;
+
+	network_val = htonl(*val);
+	pnt = (uint8_t *)&network_val;
+
+	for (i = 0; i < sizeof(int); i++)
+		oid[i] = *pnt++;
+}
+
+void oid2string(oid oid[], int len, char *string)
+{
+	int i;
+	uint8_t *pnt;
+
+	if (len == 0)
+		return;
+
+	pnt = (uint8_t *)string;
+
+	for (i = 0; i < len; i++)
+		*pnt++ = (uint8_t)oid[i];
+}
+
+void oid_copy_str(oid oid[], const char *string, int len)
+{
+	int i;
+	const uint8_t *pnt;
+
+	if (len == 0)
+		return;
+
+	pnt = (uint8_t *)string;
+
+	for (i = 0; i < len; i++)
+		oid[i] = *pnt++;
+}
+
+int smux_header_generic(struct variable *v, oid *name, size_t *length,
+			int exact, size_t *var_len, WriteMethod **write_method)
+{
+	oid fulloid[MAX_OID_LEN];
+	int ret;
+
+	oid_copy(fulloid, v->name, v->namelen);
+	fulloid[v->namelen] = 0;
+	/* Check against full instance. */
+	ret = oid_compare(name, *length, fulloid, v->namelen + 1);
+
+	/* Check single instance. */
+	if ((exact && (ret != 0)) || (!exact && (ret >= 0)))
+		return MATCH_FAILED;
+
+	/* In case of getnext, fill in full instance. */
+	memcpy(name, fulloid, (v->namelen + 1) * sizeof(oid));
+	*length = v->namelen + 1;
+
+	*write_method = 0;
+	*var_len = sizeof(long); /* default to 'long' results */
+
+	return MATCH_SUCCEEDED;
+}
+
+int smux_header_table(struct variable *v, oid *name, size_t *length, int exact,
+		      size_t *var_len, WriteMethod **write_method)
+{
+	/* If the requested OID name is less than OID prefix we
+	   handle, adjust it to our prefix. */
+	if ((oid_compare(name, *length, v->name, v->namelen)) < 0) {
+		if (exact)
+			return MATCH_FAILED;
+		oid_copy(name, v->name, v->namelen);
+		*length = v->namelen;
+	}
+
+	*write_method = 0;
+	*var_len = sizeof(long);
+
+	return MATCH_SUCCEEDED;
+}