X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=src%2Fvip6-autod.c;fp=src%2Fvip6-autod.c;h=0000000000000000000000000000000000000000;hb=db5ef3f969fc6ad34aeb5903e44d0049b2e50791;hp=0c0ee1a85f44f2fc9330615dc9a8035c6470b8bd;hpb=95e2774070e989fe9cf9f48dae5fa054e55e2a3e;p=util-vserver.git

diff --git a/src/vip6-autod.c b/src/vip6-autod.c
deleted file mode 100644
index 0c0ee1a..0000000
--- a/src/vip6-autod.c
+++ /dev/null
@@ -1,625 +0,0 @@
-/*
- * $Id$
- * Copyright (c) 2007 The Trustees of Princeton University
- * Author: Daniel Hokka Zakrisson <daniel@hozac.com>
- *
- * Licensed under the terms of the GNU General Public License
- * version 2 or later.
- */
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <string.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <arpa/inet.h>
-#include <dirent.h>
-#include <ctype.h>
-#include <errno.h>
-#include <signal.h>
-#include <syslog.h>
-
-#include <asm/types.h>
-#include <netlink/netlink.h>
-#include <netlink/route/addr.h>
-
-#include <vserver.h>
-#include "pathconfig.h"
-
-#define HAS_ADDRESS	0x01
-#define HAS_PREFIX	0x02
-
-struct nid_list {
-	nid_t nid;
-	struct nid_list *next;
-};
-struct prefix {
-	uint32_t mask;
-	int ifindex;
-	struct {
-		struct in6_addr addr;
-		int prefix_len;
-		time_t valid_until;
-	} prefix;
-	struct {
-		struct in6_addr addr;
-		int prefix_len;
-		time_t valid_until;
-	} address;
-};
-struct nid_prefix_map {
-	struct {
-		struct nid_prefix_map *prev;
-		struct nid_prefix_map *next;
-	} n;
-	struct {
-		struct nid_prefix_map *prev;
-		struct nid_prefix_map *next;
-	} p;
-	struct prefix *prefix;
-	nid_t nid;
-};
-
-struct nl_handle *handle;
-
-/* from linux/include/net/ipv6.h */
-static inline int ipv6_prefix_equal(struct in6_addr *prefix,
-				    struct in6_addr *addr, int prefixlen)
-{
-	uint32_t *a1 = prefix->s6_addr32, *a2 = addr->s6_addr32;
-	unsigned pdw, pbi;
-
-	/* check complete u32 in prefix */
-	pdw = prefixlen >> 5;
-	if (pdw && memcmp(a1, a2, pdw << 2))
-		return 0;
-
-	/* check incomplete u32 in prefix */
-	pbi = prefixlen & 0x1f;
-	if (pbi && ((a1[pdw] ^ a2[pdw]) & htonl((0xffffffff) << (32 - pbi))))
-		return 0;
-
-	return 1;
-}
-
-static int add_address_to_interface(int ifindex, struct in6_addr *address,
-				    int prefix)
-{
-	int err = -1;
-	struct rtnl_addr *rta;
-	struct nl_addr *nl;
-
-	nl = nl_addr_build(AF_INET6, address, sizeof(struct in6_addr));
-	rta = rtnl_addr_alloc();
-
-	rtnl_addr_set_family(rta, AF_INET6);
-	rtnl_addr_set_ifindex(rta, ifindex);
-	rtnl_addr_set_local(rta, nl);
-	rtnl_addr_set_prefixlen(rta, prefix);
-
-	if (rtnl_addr_add(handle, rta, NLM_F_REPLACE) != -1 || errno == EEXIST)
-		err = 0;
-
-	rtnl_addr_free(rta);
-	nl_addr_destroy(nl);
-	return err;
-}
-
-static inline int remove_address_from_interface(struct nid_prefix_map *entry)
-{
-	struct rtnl_addr *rta;
-	struct nl_addr *nl;
-	struct in6_addr a;
-	int ret;
-
-	memcpy(&a, &entry->prefix->address.addr, sizeof(a));
-	if (entry->nid != 0) {
-		a.s6_addr[11] = (entry->nid & 0x7f80) >> 7;
-		a.s6_addr[12] = (entry->nid & 0x7f) << 1;
-	}
-
-	nl = nl_addr_build(AF_INET6, &a, sizeof(a));
-	if (!nl)
-		return -1;
-	rta = rtnl_addr_alloc();
-	if (!rta)
-		return -1;
-
-	rtnl_addr_set_family(rta, AF_INET6);
-	rtnl_addr_set_ifindex(rta, entry->prefix->ifindex);
-	rtnl_addr_set_local(rta, nl);
-	rtnl_addr_set_prefixlen(rta, entry->prefix->address.prefix_len);
-
-	ret = rtnl_addr_delete(handle, rta, 0);
-
-	rtnl_addr_free(rta);
-	nl_addr_destroy(nl);
-
-	return ret;
-}
-
-static int add_to_map(struct nid_prefix_map *map, struct nid_prefix_map *new)
-{
-	struct nid_prefix_map *i;
-#define PUT_IT_IN_PLACE(node, member, om)				\
-	/* find the correct location in the list */			\
-	for (i = map->node.next; i->node.next && i->member <		\
-	     new->member; i = i->node.next)				\
-		;							\
-	if (i && i->member == new->member && i->om == new->om)		\
-		return 0;						\
-	/* first in the list */						\
-	if (!i || !i->node.prev) {					\
-		new->node.prev = NULL;					\
-		new->node.next = i;					\
-		map->node.next = new;					\
-		if (i)							\
-			i->node.prev = new;				\
-	}								\
-	/* last in the list */						\
-	else if (i->node.next == NULL) {				\
-		new->node.prev = i;					\
-		new->node.next = NULL;					\
-		i->node.next = new;					\
-	}								\
-	/* somewhere in the middle */					\
-	else {								\
-		new->node.prev = i->node.prev;				\
-		new->node.next = i;					\
-		i->node.prev->node.next = new;				\
-		i->node.prev = new;					\
-	}
-	PUT_IT_IN_PLACE(p, prefix, nid)
-	PUT_IT_IN_PLACE(n, nid, prefix)
-	return 1;
-}
-
-static inline void remove_from_map(struct nid_prefix_map *map,
-				   struct nid_prefix_map *entry)
-{
-	if (map->n.next == entry)
-		map->n.next = entry->n.next;
-	if (map->n.prev == entry)
-		map->n.prev = entry->n.prev;
-	if (map->p.next == entry)
-		map->p.next = entry->p.next;
-	if (map->p.prev == entry)
-		map->p.prev = entry->p.prev;
-}
-
-static inline void remove_from_map_and_free(struct nid_prefix_map *map,
-					    struct nid_prefix_map *entry)
-{
-	remove_from_map(map, entry);
-	free(entry);
-}
-
-static int add_nid_to_map(struct nid_prefix_map *map, struct prefix *prefix,
-			  nid_t nid)
-{
-	struct nid_prefix_map *new = calloc(1, sizeof(struct nid_prefix_map));
-	int ret;
-
-	if (!new)
-		return -1;
-
-	new->prefix = prefix;
-	new->nid = nid;
-	ret = add_to_map(map, new);
-
-	if (ret == 0)
-		free(new);
-
-	return ret;
-}
-
-static int add_prefix_to_map(struct nid_prefix_map *map, struct prefix *prefix)
-{
-	return add_nid_to_map(map, prefix, 0);
-}
-
-static void cleanup_prefix(struct nid_prefix_map *map,
-			   struct nid_prefix_map *first)
-{
-	struct nid_prefix_map *i, *p = NULL;
-
-	for (i = first; i && first->prefix == i->prefix; i = i->p.next) {
-		if (p)
-			remove_from_map_and_free(map, p);
-
-		/* ignore errors */
-		remove_address_from_interface(i);
-
-		p = i;
-	}
-	if (p)
-		remove_from_map_and_free(map, p);
-}
-
-static inline int add_nid_to_list(struct nid_list **head, nid_t nid)
-{
-	struct nid_list *i, *new;
-
-	for (i = *head; i && i->next && i->next->nid < nid; i = i->next)
-		;
-	/* check if this nid is first in the list */
-	if (i && i->nid == nid)
-		return 0;
-	/* check if it's already in the list */
-	if (i && i->next && i->next->nid == nid)
-		return 0;
-
-	/* add it */
-	new = calloc(1, sizeof(struct nid_list));
-	if (!new)
-		return -1;
-	new->nid = nid;
-
-	/* this is the lowest nid in the list */
-	if (i == *head) {
-		*head = new;
-		new->next = i;
-	}
-	/* in the middle/at the end */
-	else if (i) {
-		new->next = i->next;
-		i->next = new;
-	}
-	/* there was no list */
-	else
-		*head = new;
-
-	return 1;
-}
-
-static inline void free_nid_list(struct nid_list *head)
-{
-	struct nid_list *p;
-	for (p = NULL; head; head = head->next) {
-		if (p)
-			free(p);
-		p = head;
-	}
-	if (p)
-		free(p);
-}
-
-static inline void cleanup_nid(struct nid_prefix_map *map,
-			       nid_t nid)
-{
-	struct nid_prefix_map *i, *p = NULL;
-	for (i = map->n.next; i->nid < nid; i = i->n.next)
-		;
-	/* this nid doesn't have any entries in the map */
-	if (i->nid != nid)
-		return;
-	for (; i->nid == nid; i = i->n.next) {
-		if (p)
-			remove_from_map_and_free(map, p);
-		remove_address_from_interface(i);
-		p = i;
-	}
-	if (p)
-		remove_from_map_and_free(map, p);
-}
-
-static inline void cleanup_nids(struct nid_prefix_map *map,
-				struct nid_list *previous,
-				struct nid_list *current)
-{
-	struct nid_list *p, *pprev = NULL, *c;
-	for (p = previous, c = current; p; pprev = p, p = p->next) {
-		if (pprev)
-			free(pprev);
-		while (c->nid < p->nid)
-			c = c->next;
-		if (c->nid == p->nid)
-			continue;
-		/* this context has disappeared */
-		cleanup_nid(map, p->nid);
-	}
-	if (pprev)
-		free(pprev);
-}
-
-static void do_slices_autoconf(struct nid_prefix_map *map)
-{
-	DIR *dp;
-	struct dirent *de;
-	struct vc_net_addr addr;
-	struct nid_prefix_map *i;
-	struct nid_list *current = NULL, *n;
-	static struct nid_list *previous = NULL;
-
-	if ((dp = opendir("/proc/virtnet")) == NULL)
-		return;
-	while ((de = readdir(dp)) != NULL) {
-		nid_t nid;
-
-		if (!isdigit(de->d_name[0]))
-			continue;
-
-		nid = strtoul(de->d_name, NULL, 10);
-		addr.vna_type = VC_NXA_TYPE_IPV6 | VC_NXA_TYPE_ANY;
-		if (vc_net_remove(nid, &addr) == -1) {
-			syslog(LOG_ERR, "vc_net_remove(%u): %s", nid, strerror(errno));
-			continue;
-		}
-
-		add_nid_to_list(&current, nid);
-	}
-	closedir(dp);
-
-	for (n = current; n; n = n->next) {
-		for (i = map->p.next; i && i->nid == 0;) {
-			/* expired */
-			if (i->prefix->mask & HAS_PREFIX && i->prefix->prefix.valid_until < time(NULL)) {
-				struct nid_prefix_map *tmp;
-				char buf[64];
-
-				inet_ntop(AF_INET6, &i->prefix->address.addr, buf, sizeof(buf));
-				syslog(LOG_NOTICE, "Address %s timed out", buf);
-
-				tmp = i->p.next;
-
-				cleanup_prefix(map, i);
-
-				i = tmp;
-				continue;
-			}
-			if (i->prefix->mask != (HAS_ADDRESS|HAS_PREFIX))
-				goto next;
-
-			addr.vna_type = VC_NXA_TYPE_IPV6 | VC_NXA_TYPE_ADDR;
-			memcpy(&addr.vna_v6_ip, &i->prefix->address.addr, sizeof(struct in6_addr));
-			addr.vna_prefix = i->prefix->prefix.prefix_len;
-			if (addr.vna_prefix == 64) {
-				addr.vna_v6_mask.s6_addr32[0] = addr.vna_v6_mask.s6_addr32[1] = 0xffffffff;
-				addr.vna_v6_mask.s6_addr32[2] = addr.vna_v6_mask.s6_addr32[3] = 0;
-			}
-			addr.vna_v6_ip.s6_addr[11] = (n->nid & 0x7f80) >> 7;
-			addr.vna_v6_ip.s6_addr[12] = (n->nid & 0x007f) << 1;
-			if (vc_net_add(n->nid, &addr) == -1) {
-				syslog(LOG_ERR, "vc_net_add(%u): %s", n->nid, strerror(errno));
-				goto next;
-			}
-			if (add_address_to_interface(i->prefix->ifindex, &addr.vna_v6_ip, addr.vna_prefix) == -1) {
-				syslog(LOG_ERR, "add_address_to_interface: %s", strerror(errno));
-				goto next;
-			}
-			if (add_nid_to_map(map, i->prefix, n->nid) == -1) {
-				syslog(LOG_ERR, "add_nid_to_map: %s", strerror(errno));
-				goto next;
-			}
-next:
-			i = i->p.next;
-		}
-	}
-
-	cleanup_nids(map, previous, current);
-	previous = current;
-}
-
-/* XXX These two functions are very similar */
-static int add_prefix(struct nid_prefix_map *map, struct prefixmsg *msg,
-		      struct in6_addr *prefix, struct prefix_cacheinfo *cache)
-{
-	struct nid_prefix_map *i = map;
-	struct prefix *new;
-
-	if (!msg || !prefix || !cache)
-		return -1;
-	/* XXX IF_PREFIX_AUTOCONF == 0x02 */
-	if (!(msg->prefix_flags & 0x02))
-		return -1;
-
-	do {
-		if (i->p.next != NULL)
-			i = i->p.next;
-		if (ipv6_prefix_equal(prefix, &i->prefix->prefix.addr, msg->prefix_len) ||
-		    ipv6_prefix_equal(prefix, &i->prefix->address.addr, msg->prefix_len)) {
-			i->prefix->mask |= HAS_PREFIX;
-			i->prefix->ifindex = msg->prefix_ifindex;
-			memcpy(&i->prefix->prefix.addr, prefix, sizeof(*prefix));
-			i->prefix->prefix.prefix_len = msg->prefix_len;
-			i->prefix->prefix.valid_until = time(NULL) + cache->preferred_time;
-			return 0;
-		}
-	} while (i->p.next && i->nid == 0);
-
-	/* not yet in the map */
-	new = calloc(1, sizeof(*new));
-	if (!new)
-		return -1;
-	new->mask = HAS_PREFIX;
-	memcpy(&new->prefix.addr, prefix, sizeof(*prefix));
-	new->prefix.prefix_len = msg->prefix_len;
-	new->prefix.valid_until = time(NULL) + cache->preferred_time;
-	if (add_prefix_to_map(map, new) == -1)
-		return -1;
-
-	return 1;
-}
-
-static inline int add_address(struct nid_prefix_map *map, struct ifaddrmsg *msg,
-			      struct in6_addr *address, struct ifa_cacheinfo *cache)
-{
-	struct nid_prefix_map *i = map;
-	struct prefix *new;
-
-	if (!msg || !address || !cache)
-		return -1;
-
-	if (address->s6_addr[11] != 0xFF || address->s6_addr[12] != 0xFE)
-		return -1;
-
-	do {
-		if (i->p.next != NULL)
-			i = i->p.next;
-		if (ipv6_prefix_equal(address, &i->prefix->prefix.addr, msg->ifa_prefixlen) ||
-		    ipv6_prefix_equal(address, &i->prefix->address.addr, 128)) {
-			i->prefix->mask |= HAS_ADDRESS;
-			memcpy(&i->prefix->address.addr, address, sizeof(*address));
-			i->prefix->address.prefix_len = msg->ifa_prefixlen;
-			i->prefix->address.valid_until = time(NULL) + cache->ifa_prefered;
-			return 0;
-		}
-	} while (i->p.next && i->nid == 0);
-
-	new = calloc(1, sizeof(*new));
-	if (!new)
-		return -1;
-	new->mask = HAS_ADDRESS;
-	memcpy(&new->address.addr, address, sizeof(*address));
-	new->address.prefix_len = msg->ifa_prefixlen;
-	new->address.valid_until = time(NULL) + cache->ifa_prefered;
-	if (add_prefix_to_map(map, new) == -1)
-		return -1;
-
-	return 1;
-}
-
-static struct nla_policy addr_policy[IFA_MAX+1] = {
-	[IFA_ADDRESS]	= { .minlen = sizeof(struct in6_addr) },
-	[IFA_LABEL]	= { .type = NLA_STRING,
-			    .maxlen = IFNAMSIZ },
-	[IFA_CACHEINFO]	= { .minlen = sizeof(struct ifa_cacheinfo) },
-};
-static struct nla_policy prefix_policy[PREFIX_MAX+1] = {
-	[PREFIX_ADDRESS]   = { .minlen = sizeof(struct in6_addr) },
-	[PREFIX_CACHEINFO] = { .minlen = sizeof(struct prefix_cacheinfo) },
-};
-int handle_valid_msg(struct nl_msg *msg, void *arg)
-{
-	struct nlmsghdr *nlh = nlmsg_hdr(msg);
-	int ret = -1;
-	char *payload;
-	struct sockaddr_nl *source = nlmsg_get_src(msg);
-
-	payload = nlmsg_data(nlh);
-	if (source->nl_groups == RTMGRP_IPV6_PREFIX) {
-		struct prefixmsg *prefixmsg;
-		struct in6_addr *prefix = NULL;
-		struct prefix_cacheinfo *cacheinfo = NULL;
-		struct nlattr *tb[PREFIX_MAX+1];
-
-		if (nlmsg_parse(nlh, sizeof(struct prefixmsg), tb, PREFIX_MAX, prefix_policy) < 0) {
-			syslog(LOG_ERR, "Failed to parse prefixmsg");
-			return -1;
-		}
-
-		prefixmsg = (struct prefixmsg *) payload;
-		if (tb[PREFIX_ADDRESS])
-			prefix = nl_data_get(nla_get_data(tb[PREFIX_ADDRESS]));
-		if (tb[PREFIX_CACHEINFO])
-			cacheinfo = nl_data_get(nla_get_data(tb[PREFIX_CACHEINFO]));
-		ret = add_prefix(arg, prefixmsg, prefix, cacheinfo);
-	}	
-	else if (source->nl_groups == RTMGRP_IPV6_IFADDR) {
-		struct ifaddrmsg *ifaddrmsg;
-		struct in6_addr *address = NULL;
-		struct ifa_cacheinfo *cacheinfo = NULL;
-		struct nlattr *tb[IFA_MAX+1];
-
-		if (nlmsg_parse(nlh, sizeof(struct ifaddrmsg), tb, IFA_MAX, addr_policy) < 0) {
-			syslog(LOG_ERR, "Failed to parse ifaddrmsg");
-			return -1;
-		}
-
-		ifaddrmsg = (struct ifaddrmsg *) payload;
-		if (tb[IFA_ADDRESS])
-			address = nl_data_get(nla_get_data(tb[IFA_ADDRESS]));
-		if (tb[IFA_CACHEINFO])
-			cacheinfo = nl_data_get(nla_get_data(tb[IFA_CACHEINFO]));
-		ret = add_address(arg, ifaddrmsg, address, cacheinfo);
-	}
-	if (ret >= 0)
-		do_slices_autoconf(arg);
-
-	return 0;
-}
-
-int handle_error_msg(struct sockaddr_nl *source, struct nlmsgerr *err,
-		     void *arg)
-{
-	syslog(LOG_ERR, "%s", strerror(err->error));
-	return 0;
-}
-
-int handle_no_op(struct nl_msg *msg, void *arg)
-{
-	return 0;
-}
-
-/* only for access in the signal handler */
-struct nid_prefix_map map = {
-	.n = {
-		.next = NULL,
-		.prev = NULL,
-	},
-	.p = {
-		.next = NULL,
-		.prev = NULL,
-	},
-};
-void signal_handler(int signal)
-{
-	switch (signal) {
-	case SIGUSR1:
-		do_slices_autoconf(&map);
-		break;
-	}
-}
-
-static int write_pidfile(const char *filename)
-{
-	FILE *fp;
-	fp = fopen(filename, "w");
-	if (!fp)
-		return -1;
-	fprintf(fp, "%d\n", getpid());
-	fclose(fp);
-	return 0;
-}
-
-int main(int argc, char *argv[])
-{
-	struct nl_cb *cbs;
-
-	openlog("vip6-autod", LOG_PERROR, LOG_DAEMON);
-
-	handle = nl_handle_alloc_nondefault(NL_CB_VERBOSE);
-	cbs = nl_handle_get_cb(handle);
-	nl_cb_set(cbs, NL_CB_VALID, NL_CB_CUSTOM, handle_valid_msg, &map);
-	nl_cb_set(cbs, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, handle_no_op, NULL);
-	nl_cb_err(cbs, NL_CB_CUSTOM, handle_error_msg, &map);
-	nl_disable_sequence_check(handle);
-
-	nl_join_groups(handle, RTMGRP_IPV6_PREFIX|RTMGRP_IPV6_IFADDR);
-	if (nl_connect(handle, NETLINK_ROUTE) == -1) {
-		syslog(LOG_CRIT, "nl_connect: %s", strerror(errno));
-		exit(1);
-	}
-
-	if (daemon(0, 0) == -1)
-		return -1;
-
-	/* XXX .. here is a hack */
-	write_pidfile(DEFAULT_PKGSTATEDIR "/../vip6-autod.pid");
-
-	signal(SIGUSR1, signal_handler);
-
-	while (nl_recvmsgs(handle, cbs) > 0);
-
-	nl_close(handle);
-	closelog();
-	return 0;
-}