snmp: implemneted new node (ACCEL-PPP-MIB::cli.0) which can be used to send cli commands

README

@@ -149,6 +149,9 @@ snmpset -m +ACCEL-PPP-MIB -v 2c -c local 127.0.0.1 ACCEL-PPP-MIB::termByIfName.0
 snmpset -m +ACCEL-PPP-MIB -v 2c -c local 127.0.0.1 ACCEL-PPP-MIB::termByIP.0 = 192.168.10.10
 6. Terminate session by username:
 snmpset -m +ACCEL-PPP-MIB -v 2c -c local 127.0.0.1 ACCEL-PPP-MIB::termByUsername.0 = user1
+7. Execute cli command:
+snmpset -m +ACCEL-PPP-MIB -v 2c -c local 127.0.0.1 ACCEL-PPP-MIB::cli.0 = "shaper change all 1024 temp"
+
 
 
 Warning !!!

accel-pppd/cli/cli.c

@@ -128,7 +128,7 @@ static int split(char *buf, char **ptr)
 	return i;
 }
 
-int cli_process_cmd(struct cli_client_t *cln)
+int __export cli_process_cmd(struct cli_client_t *cln)
 {
 	struct cli_simple_cmd_t *cmd1;
 	struct cli_regexp_cmd_t *cmd2;

accel-pppd/extra/net-snmp/ACCEL-PPP-MIB.txt

@@ -323,4 +323,12 @@ shutdown OBJECT-TYPE
 			"shutdown accel-ppp"
     ::= { accelPPPAdmin 2 }
 
+cli OBJECT-TYPE
+    SYNTAX      OCTET STRING
+    MAX-ACCESS  write-only
+    STATUS      current
+    DESCRIPTION
+			"execute cli command"
+    ::= { accelPPPAdmin 3 }
+
 END

accel-pppd/extra/net-snmp/CMakeLists.txt

@@ -12,6 +12,7 @@ SET(sources
 	statPPTP.c
 	terminate.c
 	shutdown.c
+	exec_cli.c
 )
 
 ADD_LIBRARY(net-snmp SHARED ${sources})

accel-pppd/extra/net-snmp/agent.c

@@ -16,6 +16,7 @@
 #include "terminate.h"
 #include "shutdown.h"
 #include "sessionTable.h"
+#include "exec_cli.h"
 
 static const char *conf_agent_name = "accel-ppp";
 static int conf_master = 0;
@@ -96,6 +97,7 @@ static void *snmp_thread(void *a)
 	init_terminate();
 	init_shutdown();
 	init_sessionTable();
+	init_cli();
 
 	init_snmp(conf_agent_name);
 

accel-pppd/extra/net-snmp/exec_cli.c

+/*
+ * Note: this file originally auto-generated by mib2c using
+ *        : mib2c.scalar.conf 11805 2005-01-07 09:37:18Z dts12 $
+ */
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+#include <net-snmp/agent/net-snmp-agent-includes.h>
+#include "exec_cli.h"
+#include "cli_p.h"
+
+#include "memdebug.h"
+
+static void no_disconnect(struct cli_client_t *tcln)
+{
+}
+
+static int no_send(struct cli_client_t *tcln, const void *_buf, int size)
+{
+	return 0;
+}
+
+static int no_sendv(struct cli_client_t *tcln, const char *fmt, va_list ap)
+{
+	return 0;
+}
+
+static void set_action(const char *cmd, size_t len)
+{
+	struct cli_client_t cc = {
+		.cmdline = _malloc(len + 1),
+		.send = no_send,
+		.sendv = no_sendv,
+		.disconnect = no_disconnect,
+	};
+
+	memcpy(cc.cmdline, cmd, len);
+	cc.cmdline[len] = 0;
+	
+	cli_process_cmd(&cc);
+
+	_free(cc.cmdline);
+}
+
+/** Initializes the cli module */
+void
+init_cli(void)
+{
+    static oid cli_oid[] = { 1,3,6,1,4,1,8072,100,3,3 };
+
+  DEBUGMSGTL(("cli", "Initializing\n"));
+
+    netsnmp_register_scalar(
+        netsnmp_create_handler_registration("cli", handle_cli,
+                               cli_oid, OID_LENGTH(cli_oid),
+                               HANDLER_CAN_RWRITE
+        ));
+}
+
+int
+handle_cli(netsnmp_mib_handler *handler,
+                          netsnmp_handler_registration *reginfo,
+                          netsnmp_agent_request_info   *reqinfo,
+                          netsnmp_request_info         *requests)
+{
+    int ret;
+    /* We are never called for a GETNEXT if it's registered as a
+       "instance", as it's "magically" handled for us.  */
+
+    /* a instance handler also only hands us one request at a time, so
+       we don't need to loop over a list of requests; we'll only get one. */
+    
+    switch(reqinfo->mode) {
+
+        case MODE_GET:
+            netsnmp_set_request_error(reqinfo, requests, SNMP_NOSUCHINSTANCE );
+            break;
+
+        /*
+         * SET REQUEST
+         *
+         * multiple states in the transaction.  See:
+         * http://www.net-snmp.org/tutorial-5/toolkit/mib_module/set-actions.jpg
+         */
+        case MODE_SET_RESERVE1:
+                /* or you could use netsnmp_check_vb_type_and_size instead */
+            ret = netsnmp_check_vb_type(requests->requestvb, ASN_OCTET_STR);
+            if ( ret != SNMP_ERR_NOERROR ) {
+                netsnmp_set_request_error(reqinfo, requests, ret );
+            }
+            break;
+
+        case MODE_SET_RESERVE2:
+            /* XXX malloc "undo" storage buffer */
+            break;
+
+        case MODE_SET_FREE:
+            /* XXX: free resources allocated in RESERVE1 and/or
+               RESERVE2.  Something failed somewhere, and the states
+               below won't be called. */
+            break;
+
+        case MODE_SET_ACTION:
+            /* XXX: perform the value change here */
+						set_action((char *)requests->requestvb->val.string, requests->requestvb->val_len);
+            break;
+
+        case MODE_SET_COMMIT:
+            /* XXX: delete temporary storage */
+            break;
+
+        case MODE_SET_UNDO:
+            /* XXX: UNDO and return to previous value for the object */
+            break;
+
+        default:
+            /* we should never get here, so this is a really bad error */
+            snmp_log(LOG_ERR, "unknown mode (%d) in handle_cli\n", reqinfo->mode );
+            return SNMP_ERR_GENERR;
+    }
+
+    return SNMP_ERR_NOERROR;
+}

accel-pppd/extra/net-snmp/exec_cli.h

+/*
+ * Note: this file originally auto-generated by mib2c using
+ *        : mib2c.scalar.conf 11805 2005-01-07 09:37:18Z dts12 $
+ */
+#ifndef CLI_H
+#define CLI_H
+
+/* function declarations */
+void init_cli(void);
+Netsnmp_Node_Handler handle_cli;
+
+#endif /* CLI_H */