X-Git-Url: https://git.archive.openwrt.org/?p=project%2Fnetifd.git;a=blobdiff_plain;f=proto.c;h=0ba2fbe908486516c237e6999168938c1f1f7141;hp=b16600ce749ab06ed2bbce301faddc99049d4d5a;hb=d788b74c31d95a13630b0d61f69c5bd3eab63ca4;hpb=56b7cadaeb51a60afa5666e190906d332840d5a1;ds=sidebyside

diff --git a/proto.c b/proto.c
index b16600c..0ba2fbe 100644
--- a/proto.c
+++ b/proto.c
@@ -1,11 +1,492 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2012 Steven Barth <steven@midlink.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <limits.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
 
 #include "netifd.h"
+#include "system.h"
 #include "interface.h"
+#include "interface-ip.h"
 #include "proto.h"
 
+static struct avl_tree handlers;
+
+enum {
+	OPT_IPADDR,
+	OPT_IP6ADDR,
+	OPT_NETMASK,
+	OPT_BROADCAST,
+	OPT_GATEWAY,
+	OPT_IP6GW,
+	OPT_IP6PREFIX,
+	__OPT_MAX,
+};
+
+static const struct blobmsg_policy proto_ip_attributes[__OPT_MAX] = {
+	[OPT_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_ARRAY },
+	[OPT_IP6ADDR] = { .name = "ip6addr", .type = BLOBMSG_TYPE_ARRAY },
+	[OPT_NETMASK] = { .name = "netmask", .type = BLOBMSG_TYPE_STRING },
+	[OPT_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
+	[OPT_GATEWAY] = { .name = "gateway", .type = BLOBMSG_TYPE_STRING },
+	[OPT_IP6GW] = { .name = "ip6gw", .type = BLOBMSG_TYPE_STRING },
+	[OPT_IP6PREFIX] = { .name = "ip6prefix", .type = BLOBMSG_TYPE_ARRAY },
+};
+
+static const struct uci_blob_param_info proto_ip_attr_info[__OPT_MAX] = {
+	[OPT_IPADDR] = { .type = BLOBMSG_TYPE_STRING },
+	[OPT_IP6ADDR] = { .type = BLOBMSG_TYPE_STRING },
+	[OPT_IP6PREFIX] = { .type = BLOBMSG_TYPE_STRING },
+};
+
+static const char * const proto_ip_validate[__OPT_MAX] = {
+	[OPT_IPADDR] = "ip4addr",
+	[OPT_IP6ADDR] = "ip6addr",
+	[OPT_NETMASK] = "netmask",
+	[OPT_BROADCAST] = "ipaddr",
+	[OPT_GATEWAY] = "ip4addr",
+	[OPT_IP6GW] = "ip6addr",
+	[OPT_IP6PREFIX] = "ip6addr",
+};
+
+const struct uci_blob_param_list proto_ip_attr = {
+	.n_params = __OPT_MAX,
+	.params = proto_ip_attributes,
+	.validate = proto_ip_validate,
+	.info = proto_ip_attr_info,
+};
+
+enum {
+	ADDR_IPADDR,
+	ADDR_MASK,
+	ADDR_BROADCAST,
+	ADDR_PTP,
+	ADDR_PREFERRED,
+	ADDR_VALID,
+	ADDR_OFFLINK,
+	ADDR_CLASS,
+	__ADDR_MAX
+};
+
+static const struct blobmsg_policy proto_ip_addr[__ADDR_MAX] = {
+	[ADDR_IPADDR] = { .name = "ipaddr", .type = BLOBMSG_TYPE_STRING },
+	[ADDR_MASK] = { .name = "mask", .type = BLOBMSG_TYPE_STRING },
+	[ADDR_BROADCAST] = { .name = "broadcast", .type = BLOBMSG_TYPE_STRING },
+	[ADDR_PTP] = { .name = "ptp", .type = BLOBMSG_TYPE_STRING },
+	[ADDR_PREFERRED] = { .name = "preferred", .type = BLOBMSG_TYPE_INT32 },
+	[ADDR_VALID] = { .name = "valid", .type = BLOBMSG_TYPE_INT32 },
+	[ADDR_OFFLINK] = { .name = "offlink", .type = BLOBMSG_TYPE_BOOL },
+	[ADDR_CLASS] = { .name = "class", .type = BLOBMSG_TYPE_STRING },
+};
+
+static struct device_addr *
+alloc_device_addr(bool v6, bool ext)
+{
+	struct device_addr *addr;
+
+	addr = calloc(1, sizeof(*addr));
+	addr->flags = v6 ? DEVADDR_INET6 : DEVADDR_INET4;
+	if (ext)
+		addr->flags |= DEVADDR_EXTERNAL;
+
+	return addr;
+}
+
+static bool
+parse_addr(struct interface *iface, const char *str, bool v6, int mask,
+	   bool ext, uint32_t broadcast)
+{
+	struct device_addr *addr;
+	int af = v6 ? AF_INET6 : AF_INET;
+
+	addr = alloc_device_addr(v6, ext);
+	if (!addr)
+		return false;
+
+	addr->mask = mask;
+	if (!parse_ip_and_netmask(af, str, &addr->addr, &addr->mask)) {
+		interface_add_error(iface, "proto", "INVALID_ADDRESS", &str, 1);
+		free(addr);
+		return false;
+	}
+
+	if (broadcast)
+		addr->broadcast = broadcast;
+
+	vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
+	return true;
+}
+
+static int
+parse_static_address_option(struct interface *iface, struct blob_attr *attr,
+			    bool v6, int netmask, bool ext, uint32_t broadcast)
+{
+	struct blob_attr *cur;
+	int n_addr = 0;
+	int rem;
+
+	blobmsg_for_each_attr(cur, attr, rem) {
+		if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+			return -1;
+
+		n_addr++;
+		if (!parse_addr(iface, blobmsg_data(cur), v6, netmask, ext,
+				broadcast))
+			return -1;
+	}
+
+	return n_addr;
+}
+
+static struct device_addr *
+parse_address_item(struct blob_attr *attr, bool v6, bool ext)
+{
+	struct device_addr *addr;
+	struct blob_attr *tb[__ADDR_MAX];
+	struct blob_attr *cur;
+
+	if (blobmsg_type(attr) != BLOBMSG_TYPE_TABLE)
+		return NULL;
+
+	addr = alloc_device_addr(v6, ext);
+	if (!addr)
+		return NULL;
+
+	blobmsg_parse(proto_ip_addr, __ADDR_MAX, tb, blobmsg_data(attr), blobmsg_data_len(attr));
+
+	addr->mask = v6 ? 128 : 32;
+	if ((cur = tb[ADDR_MASK])) {
+		unsigned int new_mask;
+
+		new_mask = parse_netmask_string(blobmsg_data(cur), v6);
+		if (new_mask > addr->mask)
+			goto error;
+
+		addr->mask = new_mask;
+	}
+
+	cur = tb[ADDR_IPADDR];
+	if (!cur)
+		goto error;
+
+	if (!inet_pton(v6 ? AF_INET6 : AF_INET, blobmsg_data(cur), &addr->addr))
+		goto error;
+
+	if ((cur = tb[ADDR_OFFLINK]) && blobmsg_get_bool(cur))
+		addr->flags |= DEVADDR_OFFLINK;
+
+	if (!v6) {
+		if ((cur = tb[ADDR_BROADCAST]) &&
+		    !inet_pton(AF_INET, blobmsg_data(cur), &addr->broadcast))
+			goto error;
+		if ((cur = tb[ADDR_PTP]) &&
+		    !inet_pton(AF_INET, blobmsg_data(cur), &addr->point_to_point))
+			goto error;
+	} else {
+		time_t now = system_get_rtime();
+		if ((cur = tb[ADDR_PREFERRED])) {
+			int64_t preferred = blobmsg_get_u32(cur);
+			int64_t preferred_until = preferred + (int64_t)now;
+			if (preferred_until <= LONG_MAX && preferred != 0xffffffffLL)
+				addr->preferred_until = preferred_until;
+		}
+
+		if ((cur = tb[ADDR_VALID])) {
+			int64_t valid = blobmsg_get_u32(cur);
+			int64_t valid_until = valid + (int64_t)now;
+			if (valid_until <= LONG_MAX && valid != 0xffffffffLL)
+				addr->valid_until = valid_until;
+
+		}
+
+		if (addr->valid_until) {
+			if (!addr->preferred_until)
+				addr->preferred_until = addr->valid_until;
+			else if (addr->preferred_until > addr->valid_until)
+				goto error;
+		}
+
+		if ((cur = tb[ADDR_CLASS]))
+			addr->pclass = strdup(blobmsg_get_string(cur));
+	}
+
+	return addr;
+
+error:
+	free(addr);
+	return NULL;
+}
+
+static int
+parse_address_list(struct interface *iface, struct blob_attr *attr, bool v6,
+		   bool ext)
+{
+	struct device_addr *addr;
+	struct blob_attr *cur;
+	int n_addr = 0;
+	int rem;
+
+	blobmsg_for_each_attr(cur, attr, rem) {
+		addr = parse_address_item(cur, v6, ext);
+		if (!addr)
+			return -1;
+
+		n_addr++;
+		vlist_add(&iface->proto_ip.addr, &addr->node, &addr->flags);
+	}
+
+	return n_addr;
+}
+
+static bool
+parse_gateway_option(struct interface *iface, struct blob_attr *attr, bool v6)
+{
+	struct device_route *route;
+	const char *str = blobmsg_data(attr);
+	int af = v6 ? AF_INET6 : AF_INET;
+
+	route = calloc(1, sizeof(*route));
+	if (!inet_pton(af, str, &route->nexthop)) {
+		interface_add_error(iface, "proto", "INVALID_GATEWAY", &str, 1);
+		free(route);
+		return false;
+	}
+
+	route->mask = 0;
+	route->flags = (v6 ? DEVADDR_INET6 : DEVADDR_INET4);
+	route->metric = iface->metric;
+
+	unsigned int table = (v6) ? iface->ip6table : iface->ip4table;
+	if (table) {
+		route->table = table;
+		route->flags |= DEVROUTE_SRCTABLE;
+	}
+
+	vlist_add(&iface->proto_ip.route, &route->node, route);
+
+	return true;
+}
+
+static bool
+parse_prefix_option(struct interface *iface, const char *str, size_t len)
+{
+	char buf[128] = {0}, *saveptr;
+	if (len > sizeof(buf))
+		return false;
+
+	memcpy(buf, str, len);
+	char *addrstr = strtok_r(buf, "/", &saveptr);
+	if (!addrstr)
+		return false;
+
+	char *lengthstr = strtok_r(NULL, ",", &saveptr);
+	if (!lengthstr)
+		return false;
+
+	char *prefstr = strtok_r(NULL, ",", &saveptr);
+	char *validstr = (!prefstr) ? NULL : strtok_r(NULL, ",", &saveptr);
+	char *addstr = (!validstr) ? NULL : strtok_r(NULL, ",", &saveptr);
+	const char *pclass = NULL;
+
+	int64_t pref = (!prefstr) ? 0 : strtoul(prefstr, NULL, 10);
+	int64_t valid = (!validstr) ? 0 : strtoul(validstr, NULL, 10);
+
+	uint8_t length = strtoul(lengthstr, NULL, 10), excl_length = 0;
+	if (length < 1 || length > 64)
+		return false;
+
+	struct in6_addr addr, excluded, *excludedp = NULL;
+	if (inet_pton(AF_INET6, addrstr, &addr) < 1)
+		return false;
+
+	for (; addstr; addstr = strtok_r(NULL, ",", &saveptr)) {
+		char *key = NULL, *val = NULL, *addsaveptr;
+		if (!(key = strtok_r(addstr, "=", &addsaveptr)) ||
+				!(val = strtok_r(NULL, ",", &addsaveptr)))
+			continue;
+
+		if (!strcmp(key, "excluded")) {
+			char *sep = strchr(val, '/');
+			if (!sep)
+				return false;
+
+			*sep = 0;
+			excl_length = atoi(sep + 1);
+
+			if (inet_pton(AF_INET6, val, &excluded) < 1)
+				return false;
+
+			excludedp = &excluded;
+		} else if (!strcmp(key, "class")) {
+			pclass = val;
+		}
+
+	}
+
+
+
+
+	int64_t now = system_get_rtime();
+	time_t preferred_until = 0;
+	if (prefstr && pref != 0xffffffffLL && pref + now <= LONG_MAX)
+		preferred_until = pref + now;
+
+	time_t valid_until = 0;
+	if (validstr && valid != 0xffffffffLL && valid + now <= LONG_MAX)
+		valid_until = valid + now;
+
+	interface_ip_add_device_prefix(iface, &addr, length,
+			valid_until, preferred_until,
+			excludedp, excl_length, pclass);
+	return true;
+}
+
+static int
+parse_prefix_list(struct interface *iface, struct blob_attr *attr)
+{
+	struct blob_attr *cur;
+	int n_addr = 0;
+	int rem;
+
+	blobmsg_for_each_attr(cur, attr, rem) {
+		if (blobmsg_type(cur) != BLOBMSG_TYPE_STRING)
+			return -1;
+
+		n_addr++;
+		if (!parse_prefix_option(iface, blobmsg_data(cur),
+				blobmsg_data_len(cur)))
+			return -1;
+	}
+
+	return n_addr;
+}
+
+int
+proto_apply_static_ip_settings(struct interface *iface, struct blob_attr *attr)
+{
+	struct blob_attr *tb[__OPT_MAX];
+	struct blob_attr *cur;
+	const char *error;
+	unsigned int netmask = 32;
+	int n_v4 = 0, n_v6 = 0;
+	struct in_addr bcast = {};
+
+	blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+	if ((cur = tb[OPT_NETMASK])) {
+		netmask = parse_netmask_string(blobmsg_data(cur), false);
+		if (netmask > 32) {
+			error = "INVALID_NETMASK";
+			goto error;
+		}
+	}
+
+	if ((cur = tb[OPT_BROADCAST])) {
+		if (!inet_pton(AF_INET, blobmsg_data(cur), &bcast)) {
+			error = "INVALID_BROADCAST";
+			goto error;
+		}
+	}
+
+	if ((cur = tb[OPT_IPADDR]))
+		n_v4 = parse_static_address_option(iface, cur, false,
+			netmask, false, bcast.s_addr);
+
+	if ((cur = tb[OPT_IP6ADDR]))
+		n_v6 = parse_static_address_option(iface, cur, true,
+			128, false, 0);
+
+	if ((cur = tb[OPT_IP6PREFIX]))
+		if (parse_prefix_list(iface, cur) < 0)
+			goto out;
+
+	if (n_v4 < 0 || n_v6 < 0)
+		goto out;
+
+	if ((cur = tb[OPT_GATEWAY])) {
+		if (n_v4 && !parse_gateway_option(iface, cur, false))
+			goto out;
+	}
+
+	if ((cur = tb[OPT_IP6GW])) {
+		if (n_v6 && !parse_gateway_option(iface, cur, true))
+			goto out;
+	}
+
+	return 0;
+
+error:
+	interface_add_error(iface, "proto", error, NULL, 0);
+out:
+	return -1;
+}
+
+int
+proto_apply_ip_settings(struct interface *iface, struct blob_attr *attr, bool ext)
+{
+	struct blob_attr *tb[__OPT_MAX];
+	struct blob_attr *cur;
+	int n_v4 = 0, n_v6 = 0;
+
+	blobmsg_parse(proto_ip_attributes, __OPT_MAX, tb, blob_data(attr), blob_len(attr));
+
+	if ((cur = tb[OPT_IPADDR]))
+		n_v4 = parse_address_list(iface, cur, false, ext);
+
+	if ((cur = tb[OPT_IP6ADDR]))
+		n_v6 = parse_address_list(iface, cur, true, ext);
+
+	if ((cur = tb[OPT_IP6PREFIX]))
+		if (parse_prefix_list(iface, cur) < 0)
+			goto out;
+
+	if (n_v4 < 0 || n_v6 < 0)
+		goto out;
+
+	if ((cur = tb[OPT_GATEWAY])) {
+		if (n_v4 && !parse_gateway_option(iface, cur, false))
+			goto out;
+	}
+
+	if ((cur = tb[OPT_IP6GW])) {
+		if (n_v6 && !parse_gateway_option(iface, cur, true))
+			goto out;
+	}
+
+	return 0;
+
+out:
+	return -1;
+}
+
+void add_proto_handler(struct proto_handler *p)
+{
+	if (!handlers.comp)
+		avl_init(&handlers, avl_strcmp, false, NULL);
+
+	if (p->avl.key)
+		return;
+
+	p->avl.key = p->name;
+	avl_insert(&handlers, &p->avl);
+}
+
 static void
 default_proto_free(struct interface_proto_state *proto)
 {
@@ -13,40 +494,130 @@ default_proto_free(struct interface_proto_state *proto)
 }
 
 static int
-default_proto_handler(struct interface_proto_state *proto,
+invalid_proto_handler(struct interface_proto_state *proto,
 		      enum interface_proto_cmd cmd, bool force)
 {
+	return -1;
+}
+
+static int
+no_proto_handler(struct interface_proto_state *proto,
+		 enum interface_proto_cmd cmd, bool force)
+{
 	return 0;
 }
 
-struct interface_proto_state *get_default_proto(void)
+static struct interface_proto_state *
+default_proto_attach(const struct proto_handler *h,
+		     struct interface *iface, struct blob_attr *attr)
 {
 	struct interface_proto_state *proto;
 
 	proto = calloc(1, sizeof(*proto));
-	proto->handler = default_proto_handler;
 	proto->free = default_proto_free;
-	proto->flags = PROTO_FLAG_IMMEDIATE;
+	proto->cb = no_proto_handler;
 
 	return proto;
 }
 
-int interface_proto_event(struct interface_proto_state *proto,
-			  enum interface_proto_cmd cmd, bool force)
+static const struct proto_handler no_proto = {
+	.name = "none",
+	.flags = PROTO_FLAG_IMMEDIATE,
+	.attach = default_proto_attach,
+};
+
+static const struct proto_handler *
+get_proto_handler(const char *name)
 {
-	enum interface_event ev;
+	struct proto_handler *proto;
+
+	if (!strcmp(name, "none"))
+	    return &no_proto;
+
+	if (!handlers.comp)
+		return NULL;
+
+	return avl_find_element(&handlers, name, proto, avl);
+}
+
+void
+proto_dump_handlers(struct blob_buf *b)
+{
+	struct proto_handler *p;
+	void *c;
+
+	avl_for_each_element(&handlers, p, avl) {
+		void *v;
+
+		c = blobmsg_open_table(b, p->name);
+		if (p->config_params->validate) {
+			int i;
+
+			v = blobmsg_open_table(b, "validate");
+			for (i = 0; i < p->config_params->n_params; i++)
+				blobmsg_add_string(b, p->config_params->params[i].name, uci_get_validate_string(p->config_params, i));
+			blobmsg_close_table(b, v);
+		}
+		blobmsg_add_u8(b, "no_device", !!(p->flags & PROTO_FLAG_NODEV));
+		blobmsg_close_table(b, c);
+	}
+}
+
+void
+proto_init_interface(struct interface *iface, struct blob_attr *attr)
+{
+	const struct proto_handler *proto = iface->proto_handler;
+	struct interface_proto_state *state = NULL;
+
+	if (!proto)
+		proto = &no_proto;
+
+	state = proto->attach(proto, iface, attr);
+	if (!state) {
+		state = no_proto.attach(&no_proto, iface, attr);
+		state->cb = invalid_proto_handler;
+	}
+
+	state->handler = proto;
+	interface_set_proto_state(iface, state);
+}
+
+void
+proto_attach_interface(struct interface *iface, const char *proto_name)
+{
+	const struct proto_handler *proto = &no_proto;
+
+	if (proto_name) {
+		proto = get_proto_handler(proto_name);
+		if (!proto) {
+			interface_add_error(iface, "proto", "INVALID_PROTO", NULL, 0);
+			proto = &no_proto;
+		}
+	}
+
+	iface->proto_handler = proto;
+}
+
+int
+interface_proto_event(struct interface_proto_state *proto,
+		      enum interface_proto_cmd cmd, bool force)
+{
+	enum interface_proto_event ev;
 	int ret;
 
-	ret = proto->handler(proto, cmd, force);
-	if (ret || !(proto->flags & PROTO_FLAG_IMMEDIATE))
+	ret = proto->cb(proto, cmd, force);
+	if (ret || !(proto->handler->flags & PROTO_FLAG_IMMEDIATE))
 		goto out;
 
 	switch(cmd) {
 	case PROTO_CMD_SETUP:
-		ev = IFEV_UP;
+		ev = IFPEV_UP;
 		break;
 	case PROTO_CMD_TEARDOWN:
-		ev = IFEV_DOWN;
+		ev = IFPEV_DOWN;
+		break;
+	case PROTO_CMD_RENEW:
+		ev = IFPEV_RENEW;
 		break;
 	default:
 		return -EINVAL;