diff options
author | jin-eld <jin at mediatomb dot cc> | 2013-08-04 15:10:37 +0300 |
---|---|---|
committer | jin-eld <jin at mediatomb dot cc> | 2013-08-24 03:25:07 +0300 |
commit | e658892793c42b2d058eed0937025ef2ddaaa372 (patch) | |
tree | 2a022cab057f2c16ca95860ed980092880052f6e /core/LAN_discovery.c | |
parent | e2aa8161adc85795fe4d63d4642f47e90937ddc2 (diff) |
Rename core directory because of autoconf name clash
While doing the checks configure might generate "core" files and will
then try to remove them. Having a "core" directory generates an error
while runing the configure script.
There's no workaround but to rename the core directory.
Diffstat (limited to 'core/LAN_discovery.c')
-rw-r--r-- | core/LAN_discovery.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/core/LAN_discovery.c b/core/LAN_discovery.c deleted file mode 100644 index 49f52ce7..00000000 --- a/core/LAN_discovery.c +++ /dev/null | |||
@@ -1,152 +0,0 @@ | |||
1 | /* LAN_discovery.c | ||
2 | * | ||
3 | * LAN discovery implementation. | ||
4 | * | ||
5 | * Copyright (C) 2013 Tox project All Rights Reserved. | ||
6 | * | ||
7 | * This file is part of Tox. | ||
8 | * | ||
9 | * Tox is free software: you can redistribute it and/or modify | ||
10 | * it under the terms of the GNU General Public License as published by | ||
11 | * the Free Software Foundation, either version 3 of the License, or | ||
12 | * (at your option) any later version. | ||
13 | * | ||
14 | * Tox is distributed in the hope that it will be useful, | ||
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
17 | * GNU General Public License for more details. | ||
18 | * | ||
19 | * You should have received a copy of the GNU General Public License | ||
20 | * along with Tox. If not, see <http://www.gnu.org/licenses/>. | ||
21 | * | ||
22 | */ | ||
23 | |||
24 | #include "LAN_discovery.h" | ||
25 | |||
26 | #define MAX_INTERFACES 16 | ||
27 | |||
28 | #ifdef __linux | ||
29 | /* get the first working broadcast address that's not from "lo" | ||
30 | * returns higher than 0 on success | ||
31 | * returns 0 on error */ | ||
32 | static uint32_t get_broadcast(void) | ||
33 | { | ||
34 | /* not sure how many platforms this will | ||
35 | * run on, so it's wrapped in __linux for now */ | ||
36 | struct sockaddr_in *sock_holder = NULL; | ||
37 | struct ifreq i_faces[MAX_INTERFACES]; | ||
38 | struct ifconf ifconf; | ||
39 | int count = 0; | ||
40 | int sock = 0; | ||
41 | int i = 0; | ||
42 | |||
43 | /* configure ifconf for the ioctl call */ | ||
44 | if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0) { | ||
45 | perror("[!] get_broadcast: socket() error"); | ||
46 | return 0; | ||
47 | } | ||
48 | |||
49 | memset(i_faces, 0, sizeof(struct ifreq) * MAX_INTERFACES); | ||
50 | |||
51 | ifconf.ifc_buf = (char *)i_faces; | ||
52 | ifconf.ifc_len = sizeof(i_faces); | ||
53 | count = ifconf.ifc_len / sizeof(struct ifreq); | ||
54 | |||
55 | if (ioctl(sock, SIOCGIFCONF, &ifconf) < 0) { | ||
56 | perror("get_broadcast: ioctl() error"); | ||
57 | return 0; | ||
58 | } | ||
59 | |||
60 | for (i = 0; i < count; i++) { | ||
61 | /* skip the loopback interface, as it's useless */ | ||
62 | if (strcmp(i_faces[i].ifr_name, "lo") != 0) { | ||
63 | if (ioctl(sock, SIOCGIFBRDADDR, &i_faces[i]) < 0) { | ||
64 | perror("[!] get_broadcast: ioctl error"); | ||
65 | return 0; | ||
66 | } | ||
67 | |||
68 | /* just to clarify where we're getting the values from */ | ||
69 | sock_holder = (struct sockaddr_in *)&i_faces[i].ifr_broadaddr; | ||
70 | break; | ||
71 | } | ||
72 | } | ||
73 | |||
74 | close(sock); | ||
75 | |||
76 | if (sock_holder == NULL) { | ||
77 | perror("[!] no broadcast device found"); | ||
78 | return 0; | ||
79 | } | ||
80 | |||
81 | return sock_holder->sin_addr.s_addr; | ||
82 | } | ||
83 | #endif | ||
84 | |||
85 | /* Return the broadcast ip */ | ||
86 | static IP broadcast_ip(void) | ||
87 | { | ||
88 | IP ip; | ||
89 | #ifdef __linux | ||
90 | ip.i = get_broadcast(); | ||
91 | |||
92 | if (ip.i == 0) | ||
93 | /* error errored, but try anyway? */ | ||
94 | ip.i = ~0; | ||
95 | |||
96 | #else | ||
97 | ip.i = ~0; | ||
98 | #endif | ||
99 | return ip; | ||
100 | } | ||
101 | |||
102 | /*return 0 if ip is a LAN ip | ||
103 | return -1 if it is not */ | ||
104 | static int LAN_ip(IP ip) | ||
105 | { | ||
106 | if (ip.c[0] == 127)/* Loopback */ | ||
107 | return 0; | ||
108 | |||
109 | if (ip.c[0] == 10)/* 10.0.0.0 to 10.255.255.255 range */ | ||
110 | return 0; | ||
111 | |||
112 | if (ip.c[0] == 172 && ip.c[1] >= 16 && ip.c[1] <= 31)/* 172.16.0.0 to 172.31.255.255 range */ | ||
113 | return 0; | ||
114 | |||
115 | if (ip.c[0] == 192 && ip.c[1] == 168) /* 192.168.0.0 to 192.168.255.255 range */ | ||
116 | return 0; | ||
117 | |||
118 | if (ip.c[0] == 169 && ip.c[1] == 254 && ip.c[2] != 0 && ip.c[2] != 255)/* 169.254.1.0 to 169.254.254.255 range */ | ||
119 | return 0; | ||
120 | |||
121 | return -1; | ||
122 | } | ||
123 | |||
124 | static int handle_LANdiscovery(void *object, IP_Port source, uint8_t *packet, uint32_t length) | ||
125 | { | ||
126 | DHT *dht = object; | ||
127 | |||
128 | if (LAN_ip(source.ip) == -1) | ||
129 | return 1; | ||
130 | |||
131 | if (length != crypto_box_PUBLICKEYBYTES + 1) | ||
132 | return 1; | ||
133 | |||
134 | DHT_bootstrap(dht, source, packet + 1); | ||
135 | return 0; | ||
136 | } | ||
137 | |||
138 | |||
139 | int send_LANdiscovery(uint16_t port, Net_Crypto *c) | ||
140 | { | ||
141 | uint8_t data[crypto_box_PUBLICKEYBYTES + 1]; | ||
142 | data[0] = NET_PACKET_LAN_DISCOVERY; | ||
143 | memcpy(data + 1, c->self_public_key, crypto_box_PUBLICKEYBYTES); | ||
144 | IP_Port ip_port = {broadcast_ip(), port}; | ||
145 | return sendpacket(c->lossless_udp->net->sock, ip_port, data, 1 + crypto_box_PUBLICKEYBYTES); | ||
146 | } | ||
147 | |||
148 | |||
149 | void LANdiscovery_init(DHT *dht) | ||
150 | { | ||
151 | networking_registerhandler(dht->c->lossless_udp->net, NET_PACKET_LAN_DISCOVERY, &handle_LANdiscovery, dht); | ||
152 | } | ||