pass cluster master state to plugin_control functions

diff --git a/garden.c b/garden.c
index fc9dc8f..62f49a2 100644 (file)
--- a/garden.c
+++ b/garden.c
@@ -9,7 +9,7 @@
 
 /* walled garden */
 
-char const *cvs_id = "$Id: garden.c,v 1.15 2004-11-18 05:44:36 bodea Exp $";
+char const *cvs_id = "$Id: garden.c,v 1.16 2004-11-18 06:41:03 bodea Exp $";
 
 int plugin_api_version = PLUGIN_API_VERSION;
 static struct pluginfuncs *p = 0;
@@ -77,7 +77,7 @@ int plugin_kill_session(struct param_new_session *data)
 
 char *plugin_control_help[] = {
        "  garden USER|SID                             Put user into the walled garden",
-       "  ungarden USER|SID                           Release user from garden",
+       "  ungarden SID                                Release session from garden",
        0
 };
 
@@ -94,14 +94,10 @@ int plugin_control(struct param_control *data)
        if (strcmp(data->argv[0], "garden") && strcmp(data->argv[0], "ungarden"))
                return PLUGIN_RET_OK; // not for us
 
-       flag = data->argv[0][0] != 'u';
+       if (!iam_master)
+               return PLUGIN_RET_NOTMASTER;
 
-       if (!iam_master)        // All garden processing happens on the master.
-       {
-               data->response = NSCTL_RES_ERR;
-               data->additional = "must be run on the cluster master";
-               return PLUGIN_RET_STOP;
-       }
+       flag = data->argv[0][0] != 'u';
 
        if (data->argc != 2)
        {

diff --git a/l2tpns.c b/l2tpns.c
index d9fc20c..1ecbc5c 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.52 2004-11-17 15:08:19 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.53 2004-11-18 06:41:03 bodea Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -3859,17 +3859,20 @@ static int remove_plugin(char *plugin_name)
 int run_plugins(int plugin_type, void *data)
 {
        int (*func)(void *data);
-       if (!plugins[plugin_type] || plugin_type > max_plugin_functions) return 1;
+
+       if (!plugins[plugin_type] || plugin_type > max_plugin_functions)
+               return PLUGIN_RET_ERROR;
 
        ll_reset(plugins[plugin_type]);
        while ((func = ll_next(plugins[plugin_type])))
        {
-               int rc;
-               rc = func(data);
-               if (rc == PLUGIN_RET_STOP) return 1;
-               if (rc == PLUGIN_RET_ERROR) return 0;
+               int r = func(data);
+
+               if (r != PLUGIN_RET_OK)
+                       return r; // stop here
        }
-       return 1;
+
+       return PLUGIN_RET_OK;
 }
 
 static void plugins_done()
@@ -3966,8 +3969,17 @@ static void processcontrol(u8 * buf, int len, struct sockaddr_in *addr, int alen
 
        case NSCTL_REQ_CONTROL:
                {
-                       struct param_control param = { request.argc, request.argv, 0, NULL };
-                       if (!run_plugins(PLUGIN_CONTROL, &param))
+                       struct param_control param = {
+                               config->cluster_iam_master,
+                               request.argc,
+                               request.argv,
+                               0,
+                               NULL,
+                       };
+
+                       int r = run_plugins(PLUGIN_CONTROL, &param);
+
+                       if (r == PLUGIN_RET_ERROR)
                        {
                                response.type = NSCTL_RES_ERR;
                                response.argc = 1;
@@ -3975,6 +3987,22 @@ static void processcontrol(u8 * buf, int len, struct sockaddr_in *addr, int alen
                                        ? param.additional
                                        : "error returned by plugin";
                        }
+                       else if (r == PLUGIN_RET_NOTMASTER)
+                       {
+                               static char msg[] = "must be run on master: 000.000.000.000";
+
+                               response.type = NSCTL_RES_ERR;
+                               response.argc = 1;
+                               if (config->cluster_master_address)
+                               {
+                                       strcpy(msg + 23, inet_toa(config->cluster_master_address));
+                                       response.argv[0] = msg;
+                               }
+                               else
+                               {
+                                       response.argv[0] = "must be run on master: none elected";
+                               }
+                       }
                        else if (!(param.response & NSCTL_RESPONSE))
                        {
                                response.type = NSCTL_RES_ERR;

diff --git a/plugin.h b/plugin.h
index 89ef8e0..e2bd047 100644 (file)
--- a/plugin.h
+++ b/plugin.h
@@ -21,7 +21,8 @@ enum
 
 #define PLUGIN_RET_ERROR       0
 #define PLUGIN_RET_OK          1
-#define PLUGIN_RET_STOP                2
+#define PLUGIN_RET_STOP                2 
+#define PLUGIN_RET_NOTMASTER   3
 
 struct pluginfuncs
 {
@@ -81,8 +82,10 @@ struct param_timer
 
 struct param_control
 {
+       int iam_master;
        int argc;
        char **argv;
+       // output
        int response;
        char *additional;
 };

diff --git a/snoopctl.c b/snoopctl.c
index fb39f5f..428c31a 100644 (file)
--- a/snoopctl.c
+++ b/snoopctl.c
@@ -5,7 +5,7 @@
 
 /* snoop control */
 
-char const *cvs_id = "$Id: snoopctl.c,v 1.2 2004-11-18 05:44:36 bodea Exp $";
+char const *cvs_id = "$Id: snoopctl.c,v 1.3 2004-11-18 06:41:03 bodea Exp $";
 
 int plugin_api_version = PLUGIN_API_VERSION;
 static struct pluginfuncs *p = 0;
@@ -16,8 +16,6 @@ char *plugin_control_help[] = {
        0
 };
 
-static int iam_master = 0;
-
 int plugin_init(struct pluginfuncs *funcs)
 {
        if (!funcs)
@@ -27,12 +25,6 @@ int plugin_init(struct pluginfuncs *funcs)
        return 1;
 }
 
-int plugin_become_master(void)
-{
-       iam_master = 1;
-       return PLUGIN_RET_OK;
-}
-
 int plugin_control(struct param_control *data)
 {
        sessionidt session;
@@ -46,14 +38,10 @@ int plugin_control(struct param_control *data)
        if (strcmp(data->argv[0], "snoop") && strcmp(data->argv[0], "unsnoop"))
                return PLUGIN_RET_OK; // not for us
 
-       flag = data->argv[0][0] != 'u';
+       if (!data->iam_master)
+               return PLUGIN_RET_NOTMASTER;
 
-       if (!iam_master)
-       {
-               data->response = NSCTL_RES_ERR;
-               data->additional = "must be run on the cluster master";
-               return PLUGIN_RET_STOP;
-       }
+       flag = data->argv[0][0] != 'u';
 
        if (flag)
        {

diff --git a/throttlectl.c b/throttlectl.c
index f9c3d1d..9e0ca34 100644 (file)
--- a/throttlectl.c
+++ b/throttlectl.c
@@ -5,7 +5,7 @@
 
 /* throttle control */
 
-char const *cvs_id = "$Id: throttlectl.c,v 1.2 2004-11-18 05:44:36 bodea Exp $";
+char const *cvs_id = "$Id: throttlectl.c,v 1.3 2004-11-18 06:41:03 bodea Exp $";
 
 int plugin_api_version = PLUGIN_API_VERSION;
 static struct pluginfuncs *p = 0;
@@ -16,8 +16,6 @@ char *plugin_control_help[] = {
        0
 };
 
-static int iam_master = 0;
-
 int plugin_init(struct pluginfuncs *funcs)
 {
        if (!funcs)
@@ -27,12 +25,6 @@ int plugin_init(struct pluginfuncs *funcs)
        return 1;
 }
 
-int plugin_become_master(void)
-{
-       iam_master = 1;
-       return PLUGIN_RET_OK;
-}
-
 int plugin_control(struct param_control *data)
 {
        sessionidt session;
@@ -49,14 +41,10 @@ int plugin_control(struct param_control *data)
            && strcmp(data->argv[0], "unthrottle"))
                return PLUGIN_RET_OK; // not for us
 
-       flag = data->argv[0][0] != 'g';
+       if (!data->iam_master)
+               return PLUGIN_RET_NOTMASTER;
 
-       if (!iam_master)
-       {
-               data->response = NSCTL_RES_ERR;
-               data->additional = "must be run on the cluster master";
-               return PLUGIN_RET_STOP;
-       }
+       flag = data->argv[0][0] != 'g';
 
        if (flag)
        {