2 This file is part of catta.
4 catta is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation; either version 2.1 of the
7 License, or (at your option) any later version.
9 catta is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
11 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
12 Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with catta; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 #include "iface-windows.h"
23 #include <catta/malloc.h>
24 #include <catta/log.h>
27 #include "util.h" // catta_format_mac_address
30 // for the luid-to-idx hashmap
31 static unsigned luid_hash(const void *data)
33 return ((NET_LUID *)data)->Info.NetLuidIndex;
35 static int luid_equal(const void *a, const void *b)
37 return (((NET_LUID *)a)->Value == ((NET_LUID *)b)->Value);
40 static CattaIfIndex find_ifindex(CattaInterfaceMonitor *m, NET_LUID luid)
42 CattaIfIndex *pi = NULL;
45 if((pi = catta_hashmap_lookup(m->osdep.idxmap, &luid)) == NULL) {
46 // allocate memory for the hashmap key and value
47 key = catta_malloc(sizeof(luid));
48 pi = catta_malloc(sizeof(CattaIfIndex));
54 // find an index for this luid
56 if(*pi < 0) // overflow
60 if(catta_hashmap_replace(m->osdep.idxmap, key, pi) < 0)
73 // integrate the information from an IP_ADAPTER_ADDRESSES structure
74 // as returned by GetAdaptersAddresses into the CattaInterfaceMonitor
75 static void ip_adapter_address(CattaInterfaceMonitor *m, IP_ADAPTER_ADDRESSES *p)
80 // look up the interface index by LUID
81 if((idx = find_ifindex(m, p->Luid)) < 0) {
82 catta_log_error("could not allocate index ip_adapter_address");
86 // find the CattaHwInterface by index or allocate a new one
87 if((hw = catta_interface_monitor_get_hw_interface(m, idx)) == NULL) {
88 if((hw = catta_hw_interface_new(m, idx)) == NULL) {
89 catta_log_error("catta_hw_interface_new failed in ip_adapter_address");
94 // fill the CattaHwInterface struct with data
96 (p->OperStatus & IfOperStatusUp) &&
97 !(p->IfType & IF_TYPE_SOFTWARE_LOOPBACK) &&
98 !(p->Flags & IP_ADAPTER_NO_MULTICAST) &&
99 (m->server->config.allow_point_to_point || !(p->IfType & IF_TYPE_PPP));
100 // XXX what about IF_TYPE_TUNNEL?
102 catta_free(hw->name);
103 hw->name = catta_strdup(p->AdapterName);
107 hw->mac_address_size = p->PhysicalAddressLength;
108 if (hw->mac_address_size > CATTA_MAC_ADDRESS_MAX)
109 hw->mac_address_size = CATTA_MAC_ADDRESS_MAX;
110 memcpy(hw->mac_address, p->PhysicalAddress, hw->mac_address_size);
112 // XXX process addresses
114 // XXX debugging, remove
117 catta_log_debug("======\n name: %s\n index:%d\n mtu:%d\n mac:%s\n flags_ok:%d\n======",
120 catta_format_mac_address(mac, sizeof(mac), hw->mac_address, hw->mac_address_size),
126 int catta_interface_monitor_init_osdep(CattaInterfaceMonitor *m)
129 m->osdep.idxmap = catta_hashmap_new(luid_hash, luid_equal, catta_free, catta_free);
130 if(m->osdep.idxmap == NULL) {
131 catta_log_error("out of memory in catta_interface_monitor_init_osdep");
135 // XXX register callbacks to get notified of interface/address changes
140 void catta_interface_monitor_free_osdep(CattaInterfaceMonitor *m)
142 catta_hashmap_free(m->osdep.idxmap);
145 void catta_interface_monitor_sync(CattaInterfaceMonitor *m)
147 IP_ADAPTER_ADDRESSES *buf = NULL;
148 IP_ADAPTER_ADDRESSES *p;
149 ULONG bufsize = 15000;
152 // allocate a buffer and call GetAdaptersAddresses
153 // retry with the correct size if the buffer was too small
155 catta_free(buf); // no-op on first iteration
156 if((buf = catta_malloc(bufsize)) == NULL) {
157 catta_log_error("malloc failed in catta_interface_monitor_sync");
161 r = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, buf, &bufsize);
162 } while(r == ERROR_BUFFER_OVERFLOW);
165 catta_log_error("GetAdaptersAddresses failed: %u", (unsigned int)r);
169 // XXX remove interfaces for adapters that are no longer in the list
171 // create 'CattaInterface's for every adapter
172 for(p=buf; p; p=p->Next)
173 ip_adapter_address(m, p);
177 m->list_complete = 1;
178 catta_interface_monitor_check_relevant(m);
179 catta_interface_monitor_update_rrs(m, 0);
180 catta_log_info("Network interface enumeration completed.");