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Merge pull request #1577 from freifunk-ffm/wireguard-prep

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Prepare existing babel stack for wireguard
This commit is contained in:
Andreas Ziegler 2018-11-26 01:22:14 +01:00 committed by GitHub
commit f5dc9601c3
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 172 additions and 149 deletions
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2
modules
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@ -17,4 +17,4 @@ PACKAGES_LUCI_BRANCH=openwrt-18.06
PACKAGES_LUCI_COMMIT=4ba85e3d82b684262c570e38a72d2dc3bb712a13
PACKAGES_GLUON_REPO=https://github.com/freifunk-gluon/packages.git
PACKAGES_GLUON_COMMIT=be2c35785994e443d895225c7240474a46f64f5e
PACKAGES_GLUON_COMMIT=270320709166620d6f7ed0fdeb9a140966ae3fec

1
package/gluon-core/files/etc/sysctl.d/30-gluon-core.conf
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@ -1 +1,2 @@
vm.panic_on_oom=1
net.ipv4.tcp_ecn=1

96
package/gluon-core/luasrc/usr/lib/lua/gluon/iputil.lua Normal file
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@ -0,0 +1,96 @@
local bit = require 'bit'
local string = string
local tonumber = tonumber
local table = table
module 'gluon.iputil'
function IPv6(address)
--[[
(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License").
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
]]--
local data = {}
local borderl = address:sub(1, 1) == ":" and 2 or 1
local borderh, zeroh, chunk, block
if #address > 45 then return nil end
repeat
borderh = address:find(":", borderl, true)
if not borderh then break end
block = tonumber(address:sub(borderl, borderh - 1), 16)
if block and block <= 0xFFFF then
data[#data+1] = block
else
if zeroh or borderh - borderl > 1 then return nil end
zeroh = #data + 1
end
borderl = borderh + 1
until #data == 7
chunk = address:sub(borderl)
if #chunk > 0 and #chunk <= 4 then
block = tonumber(chunk, 16)
if not block or block > 0xFFFF then return nil end
data[#data+1] = block
elseif #chunk > 4 then
if #data == 7 or #chunk > 15 then return nil end
borderl = 1
for i=1, 4 do
borderh = chunk:find(".", borderl, true)
if not borderh and i < 4 then return nil end
borderh = borderh and borderh - 1
block = tonumber(chunk:sub(borderl, borderh))
if not block or block > 255 then return nil end
if i == 1 or i == 3 then
data[#data+1] = block * 256
else
data[#data] = data[#data] + block
end
borderl = borderh and borderh + 2
end
end
if zeroh then
if #data == 8 then return nil end
while #data < 8 do
table.insert(data, zeroh, 0)
end
end
if #data == 8 then
return data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8]
end
end
function mac_to_ip(prefix, mac)
local m1, m2, m3, m6, m7, m8 = string.match(mac, '(%x%x):(%x%x):(%x%x):(%x%x):(%x%x):(%x%x)')
local m4 = 0xff
local m5 = 0xfe
m1 = bit.bxor(tonumber(m1, 16), 0x02)
local h1 = 0x100 * m1 + tonumber(m2, 16)
local h2 = 0x100 * tonumber(m3, 16) + m4
local h3 = 0x100 * m5 + tonumber(m6, 16)
local h4 = 0x100 * tonumber(m7, 16) + tonumber(m8, 16)
local prefix, plen = string.match(prefix, '(.*)/(%d+)')
plen = tonumber(plen, 10)
local p1, p2, p3, p4, p5, p6, p7, p8 = IPv6(prefix)
return string.format("%x:%x:%x:%x:%x:%x:%x:%x/%d", p1, p2, p3, p4, h1, h2, h3, h4, 128)
end

2
package/gluon-iptables-clamp-mss-to-pmtu/files/lib/gluon/mesh-vpn/iptables-mss.rules
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@ -1,3 +1,3 @@
*mangle
-A FORWARD -o mesh-vpn -p tcp -m tcp --tcp-flags SYN,RST SYN -d 64:ff9b::/96 -j TCPMSS --clamp-mss-to-pmtu
-A FORWARD -o mesh-vpn+ -p tcp -m tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
COMMIT

33
package/gluon-l3roamd/files/etc/init.d/gluon-l3roamd
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@ -5,10 +5,39 @@ START=55
USE_PROCD=1
PROG=/usr/sbin/l3roamd
echotol3roamd() {
local count=0
local line="$1"
while ! (echo -e "$line" | uc /var/run/l3roamd.sock >/dev/null 2>&1)
do
sleep 1
echo retrying to connect to l3roamd in PID $$, waited ${count}s >&2
count=$((count+1))
done
return 0
}
reload_service() {
for i in $(ubus call network.interface dump | jsonfilter -e "@.interface[@.proto='gluon_mesh' && @.up=true].device")
do
echotol3roamd "add_meshif $i"
done
for i in $(echotol3roamd "get_meshifs"| jsonfilter -e "@.mesh_interfaces[@]")
do
if ! ubus call network.interface dump | jsonfilter -e "@.interface[@.proto='gluon_mesh' && @.up=true].device"|grep -q $i
then
echotol3roamd "del_meshif $i"
fi
done
}
start_service () {
local interfaces=$(
for dev in $(gluon-list-mesh-interfaces); do echo " -m $dev"; done
[ "$(ifstatus local_node | jsonfilter -e '@.up')" = 'true' ] && echo ' -i local-node'
for dev in $(gluon-list-mesh-interfaces); do echo " -m $dev"; done
[ "$(ifstatus local_node | jsonfilter -e '@.up')" = 'true' ] && echo ' -i local-node'
)
/sbin/sysctl -w net.ipv6.neigh.default.gc_thresh1=2
/sbin/sysctl -w net.ipv4.neigh.default.gc_thresh1=2

6
package/gluon-mesh-babel/files/etc/init.d/gluon-mesh-babel
View File

@ -22,11 +22,15 @@ start_service() {
echotobabel() {
local count=0
local line="$1"
while ! (echo -e "$line" | nc ::1 "$PORT" >/dev/null 2>&1)
local maxretries=10
while ! (echo -e "$line" | busybox nc ::1 "$PORT" >/dev/null 2>&1)
do
sleep 1
echo retrying to connect to babeld in PID $$, waited ${count}s >&2
count=$((count+1))
if [ $count -gt $maxretries ]; then
return 1
fi
done
return 0
}

95
package/gluon-mesh-babel/luasrc/lib/gluon/upgrade/300-gluon-mesh-babel-ip6
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@ -1,102 +1,11 @@
#!/usr/bin/lua
local bit = require 'bit'
local sysconfig = require 'gluon.sysconfig'
local uci = require('simple-uci').cursor()
local site = require 'gluon.site'
local iputil = require 'gluon.iputil'
function IPv6(address)
--[[
(c) 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
(c) 2008 Steven Barth <steven@midlink.org>
Licensed under the Apache License, Version 2.0 (the "License").
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
]]--
local data = {}
local borderl = address:sub(1, 1) == ":" and 2 or 1
local borderh, zeroh, chunk, block
if #address > 45 then return nil end
repeat
borderh = address:find(":", borderl, true)
if not borderh then break end
block = tonumber(address:sub(borderl, borderh - 1), 16)
if block and block <= 0xFFFF then
data[#data+1] = block
else
if zeroh or borderh - borderl > 1 then return nil end
zeroh = #data + 1
end
borderl = borderh + 1
until #data == 7
chunk = address:sub(borderl)
if #chunk > 0 and #chunk <= 4 then
block = tonumber(chunk, 16)
if not block or block > 0xFFFF then return nil end
data[#data+1] = block
elseif #chunk > 4 then
if #data == 7 or #chunk > 15 then return nil end
borderl = 1
for i=1, 4 do
borderh = chunk:find(".", borderl, true)
if not borderh and i < 4 then return nil end
borderh = borderh and borderh - 1
block = tonumber(chunk:sub(borderl, borderh))
if not block or block > 255 then return nil end
if i == 1 or i == 3 then
data[#data+1] = block * 256
else
data[#data] = data[#data] + block
end
borderl = borderh and borderh + 2
end
end
if zeroh then
if #data == 8 then return nil end
while #data < 8 do
table.insert(data, zeroh, 0)
end
end
if #data == 8 then
return data[1], data[2], data[3], data[4], data[5], data[6], data[7], data[8]
end
end
function mac_to_ip(prefix, mac)
local m1, m2, m3, m6, m7, m8 = string.match(mac, '(%x%x):(%x%x):(%x%x):(%x%x):(%x%x):(%x%x)')
local m4 = 0xff
local m5 = 0xfe
m1 = bit.bxor(tonumber(m1, 16), 0x02)
local h1 = 0x100 * m1 + tonumber(m2, 16)
local h2 = 0x100 * tonumber(m3, 16) + m4
local h3 = 0x100 * m5 + tonumber(m6, 16)
local h4 = 0x100 * tonumber(m7, 16) + tonumber(m8, 16)
local prefix, plen = string.match(prefix, '(.*)/(%d+)')
plen = tonumber(plen, 10)
local p1, p2, p3, p4, p5, p6, p7, p8 = IPv6(prefix)
return string.format("%x:%x:%x:%x:%x:%x:%x:%x/%d", p1, p2, p3, p4, h1, h2, h3, h4, 128)
end
local ip = mac_to_ip(site.node_prefix6(), sysconfig.primary_mac)
local ip = iputil.mac_to_ip(site.node_prefix6(), sysconfig.primary_mac)
uci:set('network', 'loopback', 'ip6addr', ip)
uci:save('network')

86
package/gluon-mesh-babel/src/respondd.c
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@ -47,6 +47,7 @@
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <ifaddrs.h>
#include <linux/ethtool.h>
#include <linux/if_addr.h>
@ -78,30 +79,41 @@
static struct babelhelper_ctx bhelper_ctx = {};
static int obtain_ifmac(unsigned char *ifmac, const char *ifname) {
struct ifreq ifr = {};
int sock;
static void obtain_if_addr(const char *ifname, char *lladdr) {
struct ifaddrs *ifaddr, *ifa;
int family, n;
sock=socket(PF_INET, SOCK_STREAM, 0);
if (-1==sock) {
perror("socket() ");
return 1;
if (getifaddrs(&ifaddr) == -1) {
perror("getifaddrs");
exit(EXIT_FAILURE);
}
strncpy(ifr.ifr_name, ifname, IFNAMSIZ-1);
for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
if (ifa->ifa_addr == NULL)
continue;
printf("obtaining hw address for nic: %s %s\n", ifname, ifr.ifr_name);
if (-1==ioctl(sock, SIOCGIFHWADDR, &ifr)) {
perror("ioctl(SIOCGIFHWADDR) ");
close(sock);
return 1;
family = ifa->ifa_addr->sa_family;
if ( (family == AF_INET6) && ( ! strncmp(ifname, ifa->ifa_name, strlen(ifname)) ) ) {
char lhost[INET6_ADDRSTRLEN];
struct in6_addr *address = &((struct sockaddr_in6*)ifa->ifa_addr)->sin6_addr;
if (inet_ntop(AF_INET6, address, lhost, INET6_ADDRSTRLEN) == NULL) {
fprintf(stderr, "obtain_if_addr: could not convert ip to string\n");
goto cleanup;
}
if (! strncmp("fe80:", lhost, 5) ) {
snprintf( lladdr, NI_MAXHOST, "%s", lhost );
goto cleanup;
}
}
}
close(sock);
memcpy(ifmac, ifr.ifr_hwaddr.sa_data, 6);
return 0;
cleanup:
freeifaddrs(ifaddr);
}
static char* get_line_from_run(const char* command) {
FILE *fp;
char *line = NULL;
@ -167,34 +179,11 @@ static bool interface_file_exists(const char *ifname, const char *name) {
return !access(path, F_OK);
}
struct in6_addr mac2ipv6(uint8_t mac[6], char * prefix) {
struct in6_addr address = {};
inet_pton(AF_INET6, prefix, &address);
address.s6_addr[8] = mac[0] ^ 0x02;
address.s6_addr[9] = mac[1];
address.s6_addr[10] = mac[2];
address.s6_addr[11] = 0xff;
address.s6_addr[12] = 0xfe;
address.s6_addr[13] = mac[3];
address.s6_addr[14] = mac[4];
address.s6_addr[15] = mac[5];
return address;
}
static void mesh_add_if(const char *ifname, struct json_object *wireless,
struct json_object *tunnel, struct json_object *other) {
char str_ip[INET6_ADDRSTRLEN] = {};
unsigned char mac[6] = {};
char str_ip[NI_MAXHOST] = {};
if (obtain_ifmac(mac, ifname)) {
printf("could not obtain mac for device: %s", ifname);
return;
}
struct in6_addr lladdr = mac2ipv6(mac, "fe80::");
inet_ntop(AF_INET6, &lladdr.s6_addr, str_ip, INET6_ADDRSTRLEN);
obtain_if_addr(ifname, str_ip);
struct json_object *address = json_object_new_string(str_ip);
@ -206,6 +195,8 @@ static void mesh_add_if(const char *ifname, struct json_object *wireless,
json_object_array_add(other, address);
}
static bool handle_neighbour(char **data, void *obj) {
if (data[NEIGHBOUR]) {
struct json_object *neigh = json_object_new_object();
@ -221,18 +212,11 @@ static bool handle_neighbour(char **data, void *obj) {
struct json_object *nif = 0;
if (data[IF] && !json_object_object_get_ex(obj, data[IF], &nif)) {
char str_ip[NI_MAXHOST] = {};
obtain_if_addr( (const char*)data[IF], str_ip );
nif = json_object_new_object();
unsigned char ifmac[6] = {};
char str_ip[INET6_ADDRSTRLEN] = {};
if (obtain_ifmac(ifmac, (const char*)data[IF])) {
printf("could not obtain mac for device: %s", data[IF]);
return false;
}
struct in6_addr lladdr = mac2ipv6(ifmac, "fe80::");
inet_ntop(AF_INET6, &lladdr.s6_addr, str_ip, INET6_ADDRSTRLEN);
json_object_object_add(nif, "ll-addr", json_object_new_string(str_ip));
json_object_object_add(nif, "protocol", json_object_new_string("babel"));
json_object_object_add(obj, data[IF], nif);