Added default-user-config and default-group-config configuration options.

These allow setting a configuration file that will be loaded if a
user-specific or group-specific configuration file isn't found.

doc/sample.config

@@ -197,6 +197,10 @@ run-as-group = daemon
 # The name of the tun device
 device = vpns
 
+# Whether the generated IPs will be predictable, i.e., IP stays the
+# same for the same user when possible.
+predictable-ips = true
+
 # The default domain to be advertised
 default-domain = example.com
 
@@ -261,6 +265,12 @@ route = 192.168.5.0/255.255.255.0
 #config-per-user = /etc/ocserv/config-per-user/
 #config-per-group = /etc/ocserv/config-per-group/
 
+# When config-per-xxx is specified and there is no group or user that
+# matches, then utilize the following configuration.
+
+#default-user-config = /etc/ocserv/defaults/user.conf
+#default-group-config = /etc/ocserv/defaults/group.conf
+
 # The system command to use to setup a route. %R will be replaced with the
 # route/mask and %D with the (tun) device.
 #

src/config.c

@@ -125,6 +125,8 @@ static struct cfg_options available_options[] = {
 	{ .name = "route-del-cmd", .type = OPTION_STRING, .mandatory = 0 },
 	{ .name = "config-per-user", .type = OPTION_STRING, .mandatory = 0 },
 	{ .name = "config-per-group", .type = OPTION_STRING, .mandatory = 0 },
+	{ .name = "default-user-config", .type = OPTION_STRING, .mandatory = 0 },
+	{ .name = "default-group-config", .type = OPTION_STRING, .mandatory = 0 },
 };
 
 static const tOptionValue* get_option(const char* name, unsigned * mand)
@@ -512,6 +514,9 @@ unsigned force_cert_auth;
 	READ_STRING("config-per-user", config->per_user_dir);
 	READ_STRING("config-per-group", config->per_group_dir);
 
+	READ_STRING("default-user-config", config->default_user_conf);
+	READ_STRING("default-group-config", config->default_group_conf);
+
 	optionUnloadNested(pov);
 }
 

src/main-misc.c

@@ -138,7 +138,7 @@ int handle_script_exit(main_server_st *s, struct proc_st *proc, int code)
 }
 
 static int read_additional_config_file(main_server_st * s, struct proc_st *proc,
-				       const char *file, const char *type)
+				       const char *file, const char *fallback, const char *type)
 {
 	int ret;
 
@@ -150,8 +150,16 @@ static int read_additional_config_file(main_server_st * s, struct proc_st *proc,
 		if (ret < 0)
 			return ERR_READ_CONFIG;
 	} else {
-		mslog(s, proc, LOG_DEBUG, "No %s configuration for '%s'", type,
-		      proc->username);
+		if (fallback != NULL) {
+			mslog(s, proc, LOG_DEBUG, "Loading default %s configuration '%s'", type, fallback);
+
+			ret = parse_group_cfg_file(s, proc, fallback);
+			if (ret < 0)
+				return ERR_READ_CONFIG;
+		} else {
+			mslog(s, proc, LOG_DEBUG, "No %s configuration for '%s'", type,
+			      proc->username);
+		}
 	}
 
 	return 0;
@@ -169,7 +177,7 @@ static int read_additional_config(struct main_server_st *s,
 		snprintf(file, sizeof(file), "%s/%s", s->config->per_group_dir,
 			 proc->groupname);
 
-		ret = read_additional_config_file(s, proc, file, "group");
+		ret = read_additional_config_file(s, proc, file, s->config->default_group_conf, "group");
 		if (ret < 0)
 			return ret;
 	}
@@ -178,7 +186,7 @@ static int read_additional_config(struct main_server_st *s,
 		snprintf(file, sizeof(file), "%s/%s", s->config->per_user_dir,
 			 proc->username);
 
-		ret = read_additional_config_file(s, proc, file, "user");
+		ret = read_additional_config_file(s, proc, file, s->config->default_user_conf, "user");
 		if (ret < 0)
 			return ret;
 	}

src/ocserv-args.def

@@ -359,6 +359,11 @@ route = 192.168.5.0/255.255.255.0
 #config-per-user = /etc/ocserv/config-per-user/
 #config-per-group = /etc/ocserv/config-per-group/
 
+# When config-per-xxx is specified and there is no group or user that
+# matches, then utilize the following configuration.
+#default-user-config = /etc/ocserv/defaults/user.conf
+#default-group-config = /etc/ocserv/defaults/group.conf
+
 # The system command to use to setup a route. %R will be replaced with the
 # route/mask and %D with the (tun) device.
 #

src/vpn.h

@@ -262,6 +262,8 @@ struct cfg_st {
 	/* additional configuration files */
 	char *per_group_dir;
 	char *per_user_dir;
+	char *default_group_conf;
+	char *default_user_conf;
 	
 	/* the tun network */
 	struct vpn_st network;