Imported Upstream version 5.7.2~dfsg

1 files changed, 240 insertions, 0 deletions

diff --git a/snmplib/snmp_auth.c b/snmplib/snmp_auth.c
new file mode 100644
index 0000000..4b408f1
--- /dev/null
+++ b/snmplib/snmp_auth.c
@@ -0,0 +1,240 @@
+/*
+ * snmp_auth.c
+ *
+ * Community name parse/build routines.
+ */
+/**********************************************************************
+    Copyright 1988, 1989, 1991, 1992 by Carnegie Mellon University
+
+			 All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of CMU not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+******************************************************************/
+
+#include <net-snmp/net-snmp-config.h>
+
+#ifdef KINETICS
+#include "gw.h"
+#include "fp4/cmdmacro.h"
+#endif
+
+#include <stdio.h>
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#if HAVE_STRING_H
+#include <string.h>
+#else
+#include <strings.h>
+#endif
+#include <sys/types.h>
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+#if HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif
+#if HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#if HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#if HAVE_DMALLOC_H
+#include <dmalloc.h>
+#endif
+
+#ifdef vms
+#include <in.h>
+#endif
+
+#include <net-snmp/types.h>
+#include <net-snmp/output_api.h>
+#include <net-snmp/utilities.h>
+
+#include <net-snmp/library/asn1.h>
+#include <net-snmp/library/snmp_api.h>
+#include <net-snmp/library/mib.h>
+#include <net-snmp/library/md5.h>
+#include <net-snmp/library/scapi.h>
+
+/*
+ * Globals.
+ */
+
+#if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C)
+/*******************************************************************-o-******
+ * snmp_comstr_parse
+ *
+ * Parameters:
+ *	*data		(I)   Message.
+ *	*length		(I/O) Bytes left in message.
+ *	*psid		(O)   Community string.
+ *	*slen		(O)   Length of community string.
+ *	*version	(O)   Message version.
+ *      
+ * Returns:
+ *	Pointer to the remainder of data.
+ *
+ *
+ * Parse the header of a community string-based message such as that found
+ * in SNMPv1 and SNMPv2c.
+ */
+u_char         *
+snmp_comstr_parse(u_char * data,
+                  size_t * length,
+                  u_char * psid, size_t * slen, long *version)
+{
+    u_char          type;
+    long            ver;
+    size_t          origlen = *slen;
+
+    /*
+     * Message is an ASN.1 SEQUENCE.
+     */
+    data = asn_parse_sequence(data, length, &type,
+                              (ASN_SEQUENCE | ASN_CONSTRUCTOR),
+                              "auth message");
+    if (data == NULL) {
+        return NULL;
+    }
+
+    /*
+     * First field is the version.
+     */
+    DEBUGDUMPHEADER("recv", "SNMP version");
+    data = asn_parse_int(data, length, &type, &ver, sizeof(ver));
+    DEBUGINDENTLESS();
+    *version = ver;
+    if (data == NULL) {
+        ERROR_MSG("bad parse of version");
+        return NULL;
+    }
+
+    /*
+     * second field is the community string for SNMPv1 & SNMPv2c 
+     */
+    DEBUGDUMPHEADER("recv", "community string");
+    data = asn_parse_string(data, length, &type, psid, slen);
+    DEBUGINDENTLESS();
+    if (data == NULL) {
+        ERROR_MSG("bad parse of community");
+        return NULL;
+    }
+    psid[SNMP_MIN(*slen, origlen - 1)] = '\0';
+    return (u_char *) data;
+
+}                               /* end snmp_comstr_parse() */
+
+
+
+
+/*******************************************************************-o-******
+ * snmp_comstr_build
+ *
+ * Parameters:
+ *	*data
+ *	*length
+ *	*psid
+ *	*slen
+ *	*version
+ *	 messagelen
+ *      
+ * Returns:
+ *	Pointer into 'data' after built section.
+ *
+ *
+ * Build the header of a community string-based message such as that found
+ * in SNMPv1 and SNMPv2c.
+ *
+ * NOTE:	The length of the message will have to be inserted later,
+ *		if not known.
+ *
+ * NOTE:	Version is an 'int'.  (CMU had it as a long, but was passing
+ *		in a *int.  Grrr.)  Assign version to verfix and pass in
+ *		that to asn_build_int instead which expects a long.  -- WH
+ */
+u_char         *
+snmp_comstr_build(u_char * data,
+                  size_t * length,
+                  u_char * psid,
+                  size_t * slen, long *version, size_t messagelen)
+{
+    long            verfix = *version;
+    u_char         *h1 = data;
+    u_char         *h1e;
+    size_t          hlength = *length;
+
+
+    /*
+     * Build the the message wrapper (note length will be inserted later).
+     */
+    data =
+        asn_build_sequence(data, length,
+                           (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR), 0);
+    if (data == NULL) {
+        return NULL;
+    }
+    h1e = data;
+
+
+    /*
+     * Store the version field.
+     */
+    data = asn_build_int(data, length,
+                         (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE |
+                                   ASN_INTEGER), &verfix, sizeof(verfix));
+    if (data == NULL) {
+        return NULL;
+    }
+
+
+    /*
+     * Store the community string.
+     */
+    data = asn_build_string(data, length,
+                            (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE |
+                                      ASN_OCTET_STR), psid,
+                            *(u_char *) slen);
+    if (data == NULL) {
+        return NULL;
+    }
+
+
+    /*
+     * Insert length.
+     */
+    asn_build_sequence(h1, &hlength,
+                       (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR),
+                       data - h1e + messagelen);
+
+
+    return data;
+
+}                               /* end snmp_comstr_build() */
+#endif /* support for community based SNMP */