| … | |
… | |
| 71 | } |
71 | } |
| 72 | |
72 | |
| 73 | int |
73 | int |
| 74 | vpn::setup () |
74 | vpn::setup () |
| 75 | { |
75 | { |
|
|
76 | ipv4_fd = -1; |
|
|
77 | |
|
|
78 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
|
|
79 | { |
|
|
80 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
|
|
81 | |
|
|
82 | if (ipv4_fd < 0) |
|
|
83 | return -1; |
|
|
84 | |
|
|
85 | sockinfo si (THISNODE, PROT_IPv4); |
|
|
86 | |
|
|
87 | if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) |
|
|
88 | { |
|
|
89 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
|
|
90 | exit (1); |
|
|
91 | } |
|
|
92 | |
|
|
93 | #ifdef IP_MTU_DISCOVER |
|
|
94 | // this I really consider a linux bug. I am neither connected |
|
|
95 | // nor do I fragment myself. Linux still sets DF and doesn't |
|
|
96 | // fragment for me sometimes. |
|
|
97 | { |
|
|
98 | int oval = IP_PMTUDISC_DONT; |
|
|
99 | setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
|
|
100 | } |
|
|
101 | #endif |
|
|
102 | |
|
|
103 | ipv4_ev_watcher.start (ipv4_fd, POLLIN); |
|
|
104 | } |
|
|
105 | |
| 76 | udpv4_fd = -1; |
106 | udpv4_fd = -1; |
| 77 | |
107 | |
| 78 | if (THISNODE->protocols & PROT_UDPv4) |
108 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
| 79 | { |
109 | { |
| 80 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
110 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
| 81 | |
111 | |
| 82 | if (udpv4_fd < 0) |
112 | if (udpv4_fd < 0) |
| 83 | return -1; |
113 | return -1; |
| … | |
… | |
| 107 | #endif |
137 | #endif |
| 108 | |
138 | |
| 109 | udpv4_ev_watcher.start (udpv4_fd, POLLIN); |
139 | udpv4_ev_watcher.start (udpv4_fd, POLLIN); |
| 110 | } |
140 | } |
| 111 | |
141 | |
| 112 | ipv4_fd = -1; |
142 | tcpv4_fd = -1; |
| 113 | if (THISNODE->protocols & PROT_IPv4) |
|
|
| 114 | { |
|
|
| 115 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
|
|
| 116 | |
|
|
| 117 | if (ipv4_fd < 0) |
|
|
| 118 | return -1; |
|
|
| 119 | |
|
|
| 120 | sockinfo si (THISNODE, PROT_IPv4); |
|
|
| 121 | |
|
|
| 122 | if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) |
|
|
| 123 | { |
|
|
| 124 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
|
|
| 125 | exit (1); |
|
|
| 126 | } |
|
|
| 127 | |
|
|
| 128 | #ifdef IP_MTU_DISCOVER |
|
|
| 129 | // this I really consider a linux bug. I am neither connected |
|
|
| 130 | // nor do I fragment myself. Linux still sets DF and doesn't |
|
|
| 131 | // fragment for me sometimes. |
|
|
| 132 | { |
|
|
| 133 | int oval = IP_PMTUDISC_DONT; |
|
|
| 134 | setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
|
|
| 135 | } |
|
|
| 136 | #endif |
|
|
| 137 | |
|
|
| 138 | ipv4_ev_watcher.start (ipv4_fd, POLLIN); |
|
|
| 139 | } |
|
|
| 140 | |
143 | |
| 141 | #if ENABLE_TCP |
144 | #if ENABLE_TCP |
| 142 | if (THISNODE->protocols & PROT_TCPv4) |
145 | if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port) |
| 143 | { |
146 | { |
| 144 | tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); |
147 | tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); |
| 145 | |
148 | |
| 146 | if (tcpv4_fd < 0) |
149 | if (tcpv4_fd < 0) |
| 147 | return -1; |
150 | return -1; |
