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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Lukas Mejdrech |
2 | * Copyright (c) 2008 Lukas Mejdrech |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup udp |
29 | /** @addtogroup udp |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** @file |
33 | /** @file |
34 | * UDP module implementation. |
34 | * UDP module implementation. |
35 | * @see udp.h |
35 | * @see udp.h |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <async.h> |
38 | #include <async.h> |
39 | #include <fibril_sync.h> |
39 | #include <fibril_sync.h> |
40 | #include <malloc.h> |
40 | #include <malloc.h> |
41 | 41 | ||
42 | #include <ipc/ipc.h> |
42 | #include <ipc/ipc.h> |
43 | #include <ipc/services.h> |
43 | #include <ipc/services.h> |
44 | 44 | ||
45 | #include "../../err.h" |
45 | #include "../../err.h" |
46 | #include "../../messages.h" |
46 | #include "../../messages.h" |
47 | #include "../../modules.h" |
47 | #include "../../modules.h" |
48 | 48 | ||
49 | #include "../../structures/dynamic_fifo.h" |
49 | #include "../../structures/dynamic_fifo.h" |
50 | #include "../../structures/packet/packet_client.h" |
50 | #include "../../structures/packet/packet_client.h" |
51 | 51 | ||
52 | #include "../../include/crc.h" |
52 | #include "../../include/crc.h" |
53 | #include "../../include/in.h" |
53 | #include "../../include/in.h" |
54 | #include "../../include/in6.h" |
54 | #include "../../include/in6.h" |
55 | #include "../../include/inet.h" |
55 | #include "../../include/inet.h" |
56 | #include "../../include/ip_client.h" |
56 | #include "../../include/ip_client.h" |
57 | #include "../../include/ip_interface.h" |
57 | #include "../../include/ip_interface.h" |
58 | #include "../../include/ip_protocols.h" |
58 | #include "../../include/ip_protocols.h" |
59 | #include "../../include/icmp_client.h" |
59 | #include "../../include/icmp_client.h" |
60 | #include "../../include/icmp_interface.h" |
60 | #include "../../include/icmp_interface.h" |
61 | #include "../../include/net_interface.h" |
61 | #include "../../include/net_interface.h" |
62 | #include "../../include/socket_codes.h" |
62 | #include "../../include/socket_codes.h" |
63 | #include "../../include/socket_errno.h" |
63 | #include "../../include/socket_errno.h" |
64 | 64 | ||
65 | #include "../../socket/socket_core.h" |
65 | #include "../../socket/socket_core.h" |
66 | #include "../../socket/socket_messages.h" |
66 | #include "../../socket/socket_messages.h" |
67 | 67 | ||
68 | #include "../tl_common.h" |
68 | #include "../tl_common.h" |
69 | #include "../tl_messages.h" |
69 | #include "../tl_messages.h" |
70 | 70 | ||
71 | #include "udp.h" |
71 | #include "udp.h" |
72 | #include "udp_header.h" |
72 | #include "udp_header.h" |
73 | #include "udp_module.h" |
73 | #include "udp_module.h" |
74 | 74 | ||
75 | /** Default UDP checksum computing. |
75 | /** Default UDP checksum computing. |
76 | */ |
76 | */ |
77 | #define NET_DEFAULT_UDP_CHECKSUM_COMPUTING true |
77 | #define NET_DEFAULT_UDP_CHECKSUM_COMPUTING true |
78 | 78 | ||
79 | /** Default UDP autobind when sending via unbound sockets. |
79 | /** Default UDP autobind when sending via unbound sockets. |
80 | */ |
80 | */ |
81 | #define NET_DEFAULT_UDP_AUTOBINDING true |
81 | #define NET_DEFAULT_UDP_AUTOBINDING true |
82 | 82 | ||
83 | /** Maximum UDP fragment size. |
83 | /** Maximum UDP fragment size. |
84 | */ |
84 | */ |
85 | #define MAX_UDP_FRAGMENT_SIZE 65535 |
85 | #define MAX_UDP_FRAGMENT_SIZE 65535 |
86 | 86 | ||
87 | /** Free ports pool start. |
87 | /** Free ports pool start. |
88 | */ |
88 | */ |
89 | #define UDP_FREE_PORTS_START 1025 |
89 | #define UDP_FREE_PORTS_START 1025 |
90 | 90 | ||
91 | /** Free ports pool end. |
91 | /** Free ports pool end. |
92 | */ |
92 | */ |
93 | #define UDP_FREE_PORTS_END 65535 |
93 | #define UDP_FREE_PORTS_END 65535 |
94 | 94 | ||
95 | /** Processes the received UDP packet queue. |
95 | /** Processes the received UDP packet queue. |
96 | * Is used as an entry point from the underlying IP module. |
96 | * Is used as an entry point from the underlying IP module. |
97 | * Locks the global lock and calls udp_process_packet() function. |
97 | * Locks the global lock and calls udp_process_packet() function. |
98 | * @param device_id The device identifier. Ignored parameter. |
98 | * @param device_id The device identifier. Ignored parameter. |
99 | * @param packet The received packet queue. Input/output parameter. |
99 | * @param packet The received packet queue. Input/output parameter. |
100 | * @param receiver The target service. Ignored parameter. |
100 | * @param receiver The target service. Ignored parameter. |
101 | * @param error The packet error reporting service. Prefixes the received packet. Input parameter. |
101 | * @param error The packet error reporting service. Prefixes the received packet. Input parameter. |
102 | * @returns EOK on success. |
102 | * @returns EOK on success. |
103 | * @returns Other error codes as defined for the udp_process_packet() function. |
103 | * @returns Other error codes as defined for the udp_process_packet() function. |
104 | */ |
104 | */ |
105 | int udp_received_msg( device_id_t device_id, packet_t packet, services_t receiver, services_t error ); |
105 | int udp_received_msg( device_id_t device_id, packet_t packet, services_t receiver, services_t error ); |
106 | 106 | ||
107 | /** Processes the received UDP packet queue. |
107 | /** Processes the received UDP packet queue. |
108 | * Notifies the destination socket application. |
108 | * Notifies the destination socket application. |
109 | * Releases the packet on error or sends an ICMP error notification.. |
109 | * Releases the packet on error or sends an ICMP error notification.. |
110 | * @param packet The received packet queue. Input/output parameter. |
110 | * @param packet The received packet queue. Input/output parameter. |
111 | * @param error The packet error reporting service. Prefixes the received packet. Input parameter. |
111 | * @param error The packet error reporting service. Prefixes the received packet. Input parameter. |
112 | * @returns EOK on success. |
112 | * @returns EOK on success. |
113 | * @returns EINVAL if the packet is not valid. |
113 | * @returns EINVAL if the packet is not valid. |
114 | * @returns EINVAL if the stored packet address is not the an_addr_t. |
114 | * @returns EINVAL if the stored packet address is not the an_addr_t. |
115 | * @returns EINVAL if the packet does not contain any data. |
115 | * @returns EINVAL if the packet does not contain any data. |
116 | * @returns NO_DATA if the packet content is shorter than the user datagram header. |
116 | * @returns NO_DATA if the packet content is shorter than the user datagram header. |
117 | * @returns ENOMEM if there is not enough memory left. |
117 | * @returns ENOMEM if there is not enough memory left. |
118 | * @returns EADDRNOTAVAIL if the destination socket does not exist. |
118 | * @returns EADDRNOTAVAIL if the destination socket does not exist. |
119 | * @returns Other error codes as defined for the ip_client_process_packet() function. |
119 | * @returns Other error codes as defined for the ip_client_process_packet() function. |
120 | */ |
120 | */ |
121 | int udp_process_packet( packet_t packet, services_t error ); |
121 | int udp_process_packet( packet_t packet, services_t error ); |
122 | 122 | ||
123 | /** Releases the packet and returns the result. |
123 | /** Releases the packet and returns the result. |
124 | * @param packet The packet queue to be released. Input parameter. |
124 | * @param packet The packet queue to be released. Input parameter. |
125 | * @param result The result to be returned. Input parameter. |
125 | * @param result The result to be returned. Input parameter. |
126 | * @return The result parameter. |
126 | * @return The result parameter. |
127 | */ |
127 | */ |
128 | int udp_release_and_return( packet_t packet, int result ); |
128 | int udp_release_and_return( packet_t packet, int result ); |
129 | 129 | ||
130 | /** @name Socket messages processing functions |
130 | /** @name Socket messages processing functions |
131 | */ |
131 | */ |
132 | /*@{*/ |
132 | /*@{*/ |
133 | 133 | ||
134 | /** Processes the socket client messages. |
134 | /** Processes the socket client messages. |
135 | * Runs until the client module disconnects. |
135 | * Runs until the client module disconnects. |
136 | * @param callid The message identifier. Input parameter. |
136 | * @param callid The message identifier. Input parameter. |
137 | * @param call The message parameters. Input parameter. |
137 | * @param call The message parameters. Input parameter. |
138 | * @returns EOK on success. |
138 | * @returns EOK on success. |
139 | * @see socket.h |
139 | * @see socket.h |
140 | */ |
140 | */ |
141 | int udp_process_client_messages( ipc_callid_t callid, ipc_call_t call ); |
141 | int udp_process_client_messages( ipc_callid_t callid, ipc_call_t call ); |
142 | 142 | ||
143 | /** Sends data from the socket to the remote address. |
143 | /** Sends data from the socket to the remote address. |
144 | * Binds the socket to a free port if not already connected/bound. |
144 | * Binds the socket to a free port if not already connected/bound. |
145 | * Handles the NET_SOCKET_SENDTO message. |
145 | * Handles the NET_SOCKET_SENDTO message. |
146 | * Supports AF_INET and AF_INET6 address families. |
146 | * Supports AF_INET and AF_INET6 address families. |
147 | * @param local_sockets The application local sockets. Input/output parameter. |
147 | * @param local_sockets The application local sockets. Input/output parameter. |
148 | * @param socket_id Socket identifier. Input parameter. |
148 | * @param socket_id Socket identifier. Input parameter. |
149 | * @param addr The destination address. Input parameter. |
149 | * @param addr The destination address. Input parameter. |
150 | * @param addrlen The address length. Input parameter. |
150 | * @param addrlen The address length. Input parameter. |
151 | * @param fragments The number of data fragments. Input parameter. |
151 | * @param fragments The number of data fragments. Input parameter. |
152 | * @param data_fragment_size The data fragment size in bytes. Input parameter. |
152 | * @param data_fragment_size The data fragment size in bytes. Input parameter. |
153 | * @param flags Various send flags. Input parameter. |
153 | * @param flags Various send flags. Input parameter. |
154 | * @returns EOK on success. |
154 | * @returns EOK on success. |
155 | * @returns EAFNOTSUPPORT if the address family is not supported. |
155 | * @returns EAFNOTSUPPORT if the address family is not supported. |
156 | * @returns ENOTSOCK if the socket is not found. |
156 | * @returns ENOTSOCK if the socket is not found. |
157 | * @returns EINVAL if the address is invalid. |
157 | * @returns EINVAL if the address is invalid. |
158 | * @returns ENOTCONN if the sending socket is not and cannot be bound. |
158 | * @returns ENOTCONN if the sending socket is not and cannot be bound. |
159 | * @returns ENOMEM if there is not enough memory left. |
159 | * @returns ENOMEM if there is not enough memory left. |
160 | * @returns Other error codes as defined for the socket_read_packet_data() function. |
160 | * @returns Other error codes as defined for the socket_read_packet_data() function. |
161 | * @returns Other error codes as defined for the ip_client_prepare_packet() function. |
161 | * @returns Other error codes as defined for the ip_client_prepare_packet() function. |
162 | * @returns Other error codes as defined for the ip_send_msg() function. |
162 | * @returns Other error codes as defined for the ip_send_msg() function. |
163 | */ |
163 | */ |
164 | int udp_sendto_message( socket_cores_ref local_sockets, int socket_id, const struct sockaddr * addr, socklen_t addrlen, int fragments, size_t data_fragment_size, int flags ); |
164 | int udp_sendto_message( socket_cores_ref local_sockets, int socket_id, const struct sockaddr * addr, socklen_t addrlen, int fragments, size_t data_fragment_size, int flags ); |
165 | 165 | ||
166 | /** Receives data to the socket. |
166 | /** Receives data to the socket. |
167 | * Handles the NET_SOCKET_RECVFROM message. |
167 | * Handles the NET_SOCKET_RECVFROM message. |
168 | * Replies the source address as well. |
168 | * Replies the source address as well. |
169 | * @param local_sockets The application local sockets. Input parameter. |
169 | * @param local_sockets The application local sockets. Input parameter. |
170 | * @param socket_id Socket identifier. Input parameter. |
170 | * @param socket_id Socket identifier. Input parameter. |
171 | * @param flags Various receive flags. Input parameter. |
171 | * @param flags Various receive flags. Input parameter. |
172 | * @param addrlen The source address length. Output parameter. |
172 | * @param addrlen The source address length. Output parameter. |
173 | * @returns The number of bytes received. |
173 | * @returns The number of bytes received. |
174 | * @returns ENOTSOCK if the socket is not found. |
174 | * @returns ENOTSOCK if the socket is not found. |
175 | * @returns NO_DATA if there are no received packets or data. |
175 | * @returns NO_DATA if there are no received packets or data. |
176 | * @returns ENOMEM if there is not enough memory left. |
176 | * @returns ENOMEM if there is not enough memory left. |
177 | * @returns EINVAL if the received address is not an IP address. |
177 | * @returns EINVAL if the received address is not an IP address. |
178 | * @returns Other error codes as defined for the packet_translate() function. |
178 | * @returns Other error codes as defined for the packet_translate() function. |
179 | * @returns Other error codes as defined for the data_reply() function. |
179 | * @returns Other error codes as defined for the data_reply() function. |
180 | */ |
180 | */ |
181 | int udp_recvfrom_message( socket_cores_ref local_sockets, int socket_id, int flags, size_t * addrlen ); |
181 | int udp_recvfrom_message( socket_cores_ref local_sockets, int socket_id, int flags, size_t * addrlen ); |
182 | 182 | ||
183 | /*@}*/ |
183 | /*@}*/ |
184 | 184 | ||
185 | /** UDP global data. |
185 | /** UDP global data. |
186 | */ |
186 | */ |
187 | udp_globals_t udp_globals; |
187 | udp_globals_t udp_globals; |
188 | 188 | ||
189 | int udp_initialize( async_client_conn_t client_connection ){ |
189 | int udp_initialize( async_client_conn_t client_connection ){ |
190 | ERROR_DECLARE; |
190 | ERROR_DECLARE; |
191 | 191 | ||
192 | measured_string_t names[] = {{ "UDP_CHECKSUM_COMPUTING", 22 }, { "UDP_AUTOBINDING", 15 }}; |
192 | measured_string_t names[] = {{ "UDP_CHECKSUM_COMPUTING", 22 }, { "UDP_AUTOBINDING", 15 }}; |
193 | measured_string_ref configuration; |
193 | measured_string_ref configuration; |
194 | size_t count = sizeof( names ) / sizeof( measured_string_t ); |
194 | size_t count = sizeof( names ) / sizeof( measured_string_t ); |
195 | char * data; |
195 | char * data; |
196 | 196 | ||
197 | fibril_rwlock_initialize( & udp_globals.lock ); |
197 | fibril_rwlock_initialize( & udp_globals.lock ); |
198 | fibril_rwlock_write_lock( & udp_globals.lock ); |
198 | fibril_rwlock_write_lock( & udp_globals.lock ); |
199 | udp_globals.icmp_phone = icmp_connect_module( SERVICE_ICMP ); |
199 | udp_globals.icmp_phone = icmp_connect_module( SERVICE_ICMP ); |
200 | if( udp_globals.icmp_phone < 0 ){ |
200 | if( udp_globals.icmp_phone < 0 ){ |
201 | return udp_globals.icmp_phone; |
201 | return udp_globals.icmp_phone; |
202 | } |
202 | } |
203 | udp_globals.ip_phone = ip_bind_service( SERVICE_IP, IPPROTO_UDP, SERVICE_UDP, client_connection, udp_received_msg ); |
203 | udp_globals.ip_phone = ip_bind_service( SERVICE_IP, IPPROTO_UDP, SERVICE_UDP, client_connection, udp_received_msg ); |
204 | if( udp_globals.ip_phone < 0 ){ |
204 | if( udp_globals.ip_phone < 0 ){ |
205 | return udp_globals.ip_phone; |
205 | return udp_globals.ip_phone; |
206 | } |
206 | } |
207 | ERROR_PROPAGATE( ip_packet_size_req( udp_globals.ip_phone, -1, & udp_globals.packet_dimension.addr_len, & udp_globals.packet_dimension.prefix, & udp_globals.packet_dimension.content, & udp_globals.packet_dimension.suffix )); |
207 | ERROR_PROPAGATE( ip_packet_size_req( udp_globals.ip_phone, -1, & udp_globals.packet_dimension.addr_len, & udp_globals.packet_dimension.prefix, & udp_globals.packet_dimension.content, & udp_globals.packet_dimension.suffix )); |
208 | ERROR_PROPAGATE( socket_ports_initialize( & udp_globals.sockets )); |
208 | ERROR_PROPAGATE( socket_ports_initialize( & udp_globals.sockets )); |
209 | udp_globals.packet_dimension.prefix += sizeof( udp_header_t ); |
209 | udp_globals.packet_dimension.prefix += sizeof( udp_header_t ); |
210 | udp_globals.packet_dimension.content -= sizeof( udp_header_t ); |
210 | udp_globals.packet_dimension.content -= sizeof( udp_header_t ); |
211 | udp_globals.last_used_port = UDP_FREE_PORTS_START - 1; |
211 | udp_globals.last_used_port = UDP_FREE_PORTS_START - 1; |
212 | // get configuration |
212 | // get configuration |
213 | udp_globals.checksum_computing = NET_DEFAULT_UDP_CHECKSUM_COMPUTING; |
213 | udp_globals.checksum_computing = NET_DEFAULT_UDP_CHECKSUM_COMPUTING; |
214 | udp_globals.autobinding = NET_DEFAULT_UDP_AUTOBINDING; |
214 | udp_globals.autobinding = NET_DEFAULT_UDP_AUTOBINDING; |
215 | configuration = & names[ 0 ]; |
215 | configuration = & names[ 0 ]; |
216 | ERROR_PROPAGATE( net_get_conf_req( udp_globals.net_phone, & configuration, count, & data )); |
216 | ERROR_PROPAGATE( net_get_conf_req( udp_globals.net_phone, & configuration, count, & data )); |
217 | if( configuration ){ |
217 | if( configuration ){ |
218 | if( configuration[ 0 ].value ){ |
218 | if( configuration[ 0 ].value ){ |
219 | udp_globals.checksum_computing = ( configuration[ 0 ].value[ 0 ] == 'y' ); |
219 | udp_globals.checksum_computing = ( configuration[ 0 ].value[ 0 ] == 'y' ); |
220 | } |
220 | } |
221 | if( configuration[ 1 ].value ){ |
221 | if( configuration[ 1 ].value ){ |
222 | udp_globals.autobinding = ( configuration[ 1 ].value[ 0 ] == 'y' ); |
222 | udp_globals.autobinding = ( configuration[ 1 ].value[ 0 ] == 'y' ); |
223 | } |
223 | } |
224 | net_free_settings( configuration, data ); |
224 | net_free_settings( configuration, data ); |
225 | } |
225 | } |
226 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
226 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
227 | return EOK; |
227 | return EOK; |
228 | } |
228 | } |
229 | 229 | ||
230 | int udp_received_msg( device_id_t device_id, packet_t packet, services_t receiver, services_t error ){ |
230 | int udp_received_msg( device_id_t device_id, packet_t packet, services_t receiver, services_t error ){ |
231 | int result; |
231 | int result; |
232 | 232 | ||
233 | fibril_rwlock_read_lock( & udp_globals.lock ); |
233 | fibril_rwlock_write_lock( & udp_globals.lock ); |
234 | result = udp_process_packet( packet, error ); |
234 | result = udp_process_packet( packet, error ); |
235 | fibril_rwlock_read_unlock( & udp_globals.lock ); |
235 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
236 | 236 | ||
237 | return result; |
237 | return result; |
238 | } |
238 | } |
239 | 239 | ||
240 | int udp_process_packet( packet_t packet, services_t error ){ |
240 | int udp_process_packet( packet_t packet, services_t error ){ |
241 | ERROR_DECLARE; |
241 | ERROR_DECLARE; |
242 | 242 | ||
243 | size_t length; |
243 | size_t length; |
244 | size_t offset; |
244 | size_t offset; |
245 | int result; |
245 | int result; |
246 | udp_header_ref header; |
246 | udp_header_ref header; |
247 | socket_core_ref * socket; |
247 | socket_core_ref socket; |
248 | packet_t next_packet; |
248 | packet_t next_packet; |
249 | size_t total_length; |
249 | size_t total_length; |
250 | uint32_t checksum; |
250 | uint32_t checksum; |
251 | int fragments; |
251 | int fragments; |
252 | packet_t tmp_packet; |
252 | packet_t tmp_packet; |
253 | icmp_type_t type; |
253 | icmp_type_t type; |
254 | icmp_code_t code; |
254 | icmp_code_t code; |
255 | ip_pseudo_header_ref ip_header; |
255 | ip_pseudo_header_ref ip_header; |
256 | struct sockaddr * src; |
256 | struct sockaddr * src; |
257 | struct sockaddr * dest; |
257 | struct sockaddr * dest; |
258 | 258 | ||
259 | if( error ){ |
259 | if( error ){ |
260 | switch( error ){ |
260 | switch( error ){ |
261 | case SERVICE_ICMP: |
261 | case SERVICE_ICMP: |
262 | // ignore error |
262 | // ignore error |
263 | // length = icmp_client_header_length( packet ); |
263 | // length = icmp_client_header_length( packet ); |
264 | // process error |
264 | // process error |
265 | result = icmp_client_process_packet( packet, & type, & code, NULL, NULL ); |
265 | result = icmp_client_process_packet( packet, & type, & code, NULL, NULL ); |
266 | if( result < 0 ){ |
266 | if( result < 0 ){ |
267 | return udp_release_and_return( packet, result ); |
267 | return udp_release_and_return( packet, result ); |
268 | } |
268 | } |
269 | length = ( size_t ) result; |
269 | length = ( size_t ) result; |
270 | if( ERROR_OCCURRED( packet_trim( packet, length, 0 ))){ |
270 | if( ERROR_OCCURRED( packet_trim( packet, length, 0 ))){ |
271 | return udp_release_and_return( packet, ERROR_CODE ); |
271 | return udp_release_and_return( packet, ERROR_CODE ); |
272 | } |
272 | } |
273 | break; |
273 | break; |
274 | default: |
274 | default: |
275 | return udp_release_and_return( packet, ENOTSUP ); |
275 | return udp_release_and_return( packet, ENOTSUP ); |
276 | } |
276 | } |
277 | } |
277 | } |
278 | // TODO process received ipopts? |
278 | // TODO process received ipopts? |
279 | result = ip_client_process_packet( packet, NULL, NULL, NULL, NULL, NULL ); |
279 | result = ip_client_process_packet( packet, NULL, NULL, NULL, NULL, NULL ); |
280 | if( result < 0 ){ |
280 | if( result < 0 ){ |
281 | return udp_release_and_return( packet, result ); |
281 | return udp_release_and_return( packet, result ); |
282 | } |
282 | } |
283 | offset = ( size_t ) result; |
283 | offset = ( size_t ) result; |
284 | 284 | ||
285 | length = packet_get_data_length( packet ); |
285 | length = packet_get_data_length( packet ); |
286 | if( length <= 0 ){ |
286 | if( length <= 0 ){ |
287 | return udp_release_and_return( packet, EINVAL ); |
287 | return udp_release_and_return( packet, EINVAL ); |
288 | } |
288 | } |
289 | if( length < sizeof( udp_header_t ) + offset ){ |
289 | if( length < sizeof( udp_header_t ) + offset ){ |
290 | return udp_release_and_return( packet, NO_DATA ); |
290 | return udp_release_and_return( packet, NO_DATA ); |
291 | } |
291 | } |
292 | 292 | ||
293 | // trim all but UDP header |
293 | // trim all but UDP header |
294 | if( ERROR_OCCURRED( packet_trim( packet, offset, 0 ))){ |
294 | if( ERROR_OCCURRED( packet_trim( packet, offset, 0 ))){ |
295 | return udp_release_and_return( packet, ERROR_CODE ); |
295 | return udp_release_and_return( packet, ERROR_CODE ); |
296 | } |
296 | } |
297 | 297 | ||
298 | // get udp header |
298 | // get udp header |
299 | header = ( udp_header_ref ) packet_get_data( packet ); |
299 | header = ( udp_header_ref ) packet_get_data( packet ); |
300 | if( ! header ){ |
300 | if( ! header ){ |
301 | return udp_release_and_return( packet, NO_DATA ); |
301 | return udp_release_and_return( packet, NO_DATA ); |
302 | } |
302 | } |
303 | // find the destination socket |
303 | // find the destination socket |
304 | socket = socket_ports_find( & udp_globals.sockets, ntohs( header->destination_port )); |
304 | socket = socket_port_find( & udp_globals.sockets, ntohs( header->destination_port ), SOCKET_MAP_KEY_LISTENING, 0 ); |
305 | if( ! socket ){ |
305 | if( ! socket ){ |
306 | if( tl_prepare_icmp_packet( udp_globals.net_phone, udp_globals.icmp_phone, packet, error ) == EOK ){ |
306 | if( tl_prepare_icmp_packet( udp_globals.net_phone, udp_globals.icmp_phone, packet, error ) == EOK ){ |
307 | icmp_destination_unreachable_msg( udp_globals.icmp_phone, ICMP_PORT_UNREACH, 0, packet ); |
307 | icmp_destination_unreachable_msg( udp_globals.icmp_phone, ICMP_PORT_UNREACH, 0, packet ); |
308 | } |
308 | } |
309 | return EADDRNOTAVAIL; |
309 | return EADDRNOTAVAIL; |
310 | } |
310 | } |
311 | 311 | ||
312 | // count the received packet fragments |
312 | // count the received packet fragments |
313 | next_packet = packet; |
313 | next_packet = packet; |
314 | fragments = 0; |
314 | fragments = 0; |
315 | total_length = ntohs( header->total_length ); |
315 | total_length = ntohs( header->total_length ); |
316 | // compute header checksum if set |
316 | // compute header checksum if set |
317 | if( header->checksum && ( ! error )){ |
317 | if( header->checksum && ( ! error )){ |
318 | result = packet_get_addr( packet, ( uint8_t ** ) & src, ( uint8_t ** ) & dest ); |
318 | result = packet_get_addr( packet, ( uint8_t ** ) & src, ( uint8_t ** ) & dest ); |
319 | if( result <= 0 ){ |
319 | if( result <= 0 ){ |
320 | return udp_release_and_return( packet, result ); |
320 | return udp_release_and_return( packet, result ); |
321 | } |
321 | } |
322 | if( ERROR_OCCURRED( ip_client_get_pseudo_header( IPPROTO_UDP, src, result, dest, result, total_length, & ip_header, & length ))){ |
322 | if( ERROR_OCCURRED( ip_client_get_pseudo_header( IPPROTO_UDP, src, result, dest, result, total_length, & ip_header, & length ))){ |
323 | return udp_release_and_return( packet, ERROR_CODE ); |
323 | return udp_release_and_return( packet, ERROR_CODE ); |
324 | }else{ |
324 | }else{ |
325 | checksum = compute_checksum( 0, ip_header, length ); |
325 | checksum = compute_checksum( 0, ip_header, length ); |
326 | // the udp header checksum will be added with the first fragment later |
326 | // the udp header checksum will be added with the first fragment later |
327 | free( ip_header ); |
327 | free( ip_header ); |
328 | } |
328 | } |
329 | }else{ |
329 | }else{ |
330 | header->checksum = 0; |
330 | header->checksum = 0; |
331 | checksum = 0; |
331 | checksum = 0; |
332 | } |
332 | } |
333 | 333 | ||
334 | do{ |
334 | do{ |
335 | ++ fragments; |
335 | ++ fragments; |
336 | length = packet_get_data_length( next_packet ); |
336 | length = packet_get_data_length( next_packet ); |
337 | if( length <= 0 ){ |
337 | if( length <= 0 ){ |
338 | return udp_release_and_return( packet, NO_DATA ); |
338 | return udp_release_and_return( packet, NO_DATA ); |
339 | } |
339 | } |
340 | if( total_length < length ){ |
340 | if( total_length < length ){ |
341 | if( ERROR_OCCURRED( packet_trim( next_packet, 0, length - total_length ))){ |
341 | if( ERROR_OCCURRED( packet_trim( next_packet, 0, length - total_length ))){ |
342 | return udp_release_and_return( packet, ERROR_CODE ); |
342 | return udp_release_and_return( packet, ERROR_CODE ); |
343 | } |
343 | } |
344 | // add partial checksum if set |
344 | // add partial checksum if set |
345 | if( header->checksum ){ |
345 | if( header->checksum ){ |
346 | checksum = compute_checksum( checksum, packet_get_data( packet ), packet_get_data_length( packet )); |
346 | checksum = compute_checksum( checksum, packet_get_data( packet ), packet_get_data_length( packet )); |
347 | } |
347 | } |
348 | // relese the rest of the packet fragments |
348 | // relese the rest of the packet fragments |
349 | tmp_packet = pq_next( next_packet ); |
349 | tmp_packet = pq_next( next_packet ); |
350 | while( tmp_packet ){ |
350 | while( tmp_packet ){ |
351 | next_packet = pq_detach( tmp_packet ); |
351 | next_packet = pq_detach( tmp_packet ); |
352 | pq_release( udp_globals.net_phone, packet_get_id( tmp_packet )); |
352 | pq_release( udp_globals.net_phone, packet_get_id( tmp_packet )); |
353 | tmp_packet = next_packet; |
353 | tmp_packet = next_packet; |
354 | } |
354 | } |
355 | // exit the loop |
355 | // exit the loop |
356 | break; |
356 | break; |
357 | } |
357 | } |
358 | total_length -= length; |
358 | total_length -= length; |
359 | // add partial checksum if set |
359 | // add partial checksum if set |
360 | if( header->checksum ){ |
360 | if( header->checksum ){ |
361 | checksum = compute_checksum( checksum, packet_get_data( packet ), packet_get_data_length( packet )); |
361 | checksum = compute_checksum( checksum, packet_get_data( packet ), packet_get_data_length( packet )); |
362 | } |
362 | } |
363 | }while(( next_packet = pq_next( next_packet )) && ( total_length > 0 )); |
363 | }while(( next_packet = pq_next( next_packet )) && ( total_length > 0 )); |
364 | 364 | ||
365 | // check checksum |
365 | // check checksum |
366 | if( header->checksum ){ |
366 | if( header->checksum ){ |
367 | if( flip_checksum( compact_checksum( checksum ))){ |
367 | if( flip_checksum( compact_checksum( checksum ))){ |
368 | if( tl_prepare_icmp_packet( udp_globals.net_phone, udp_globals.icmp_phone, packet, error ) == EOK ){ |
368 | if( tl_prepare_icmp_packet( udp_globals.net_phone, udp_globals.icmp_phone, packet, error ) == EOK ){ |
369 | // checksum error ICMP |
369 | // checksum error ICMP |
370 | icmp_parameter_problem_msg( udp_globals.icmp_phone, ICMP_PARAM_POINTER, (( size_t ) (( void * ) & header->checksum )) - (( size_t ) (( void * ) header )), packet ); |
370 | icmp_parameter_problem_msg( udp_globals.icmp_phone, ICMP_PARAM_POINTER, (( size_t ) (( void * ) & header->checksum )) - (( size_t ) (( void * ) header )), packet ); |
371 | } |
371 | } |
372 | return EINVAL; |
372 | return EINVAL; |
373 | } |
373 | } |
374 | } |
374 | } |
375 | 375 | ||
376 | // queue the received packet |
376 | // queue the received packet |
377 | if( ERROR_OCCURRED( dyn_fifo_push( &( ** socket ).received, packet_get_id( packet ), SOCKET_MAX_RECEIVED_SIZE ))){ |
377 | if( ERROR_OCCURRED( dyn_fifo_push( & socket->received, packet_get_id( packet ), SOCKET_MAX_RECEIVED_SIZE ))){ |
378 | return udp_release_and_return( packet, ERROR_CODE ); |
378 | return udp_release_and_return( packet, ERROR_CODE ); |
379 | } |
379 | } |
380 | 380 | ||
381 | // notify the destination socket |
381 | // notify the destination socket |
382 | async_msg_5(( ** socket ).phone, NET_SOCKET_RECEIVED, ( ipcarg_t ) ( ** socket ).socket_id, 0, 0, 0, ( ipcarg_t ) fragments ); |
382 | async_msg_5( socket->phone, NET_SOCKET_RECEIVED, ( ipcarg_t ) socket->socket_id, 0, 0, 0, ( ipcarg_t ) fragments ); |
383 | return EOK; |
383 | return EOK; |
384 | } |
384 | } |
385 | 385 | ||
386 | int udp_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
386 | int udp_message( ipc_callid_t callid, ipc_call_t * call, ipc_call_t * answer, int * answer_count ){ |
387 | ERROR_DECLARE; |
387 | ERROR_DECLARE; |
388 | 388 | ||
389 | packet_t packet; |
389 | packet_t packet; |
390 | 390 | ||
391 | * answer_count = 0; |
391 | * answer_count = 0; |
392 | switch( IPC_GET_METHOD( * call )){ |
392 | switch( IPC_GET_METHOD( * call )){ |
393 | case NET_TL_RECEIVED: |
393 | case NET_TL_RECEIVED: |
394 | if( ! ERROR_OCCURRED( packet_translate( udp_globals.net_phone, & packet, IPC_GET_PACKET( call )))){ |
394 | if( ! ERROR_OCCURRED( packet_translate( udp_globals.net_phone, & packet, IPC_GET_PACKET( call )))){ |
395 | ERROR_CODE = udp_received_msg( IPC_GET_DEVICE( call ), packet, SERVICE_UDP, IPC_GET_ERROR( call )); |
395 | ERROR_CODE = udp_received_msg( IPC_GET_DEVICE( call ), packet, SERVICE_UDP, IPC_GET_ERROR( call )); |
396 | } |
396 | } |
397 | return ERROR_CODE; |
397 | return ERROR_CODE; |
398 | case IPC_M_CONNECT_TO_ME: |
398 | case IPC_M_CONNECT_TO_ME: |
399 | return udp_process_client_messages( callid, * call ); |
399 | return udp_process_client_messages( callid, * call ); |
400 | } |
400 | } |
401 | return ENOTSUP; |
401 | return ENOTSUP; |
402 | } |
402 | } |
403 | 403 | ||
404 | int udp_process_client_messages( ipc_callid_t callid, ipc_call_t call ){ |
404 | int udp_process_client_messages( ipc_callid_t callid, ipc_call_t call ){ |
405 | int res; |
405 | int res; |
406 | bool keep_on_going = true; |
406 | bool keep_on_going = true; |
407 | socket_cores_t local_sockets; |
407 | socket_cores_t local_sockets; |
408 | int app_phone = IPC_GET_PHONE( & call ); |
408 | int app_phone = IPC_GET_PHONE( & call ); |
409 | struct sockaddr * addr; |
409 | struct sockaddr * addr; |
410 | size_t addrlen; |
410 | size_t addrlen; |
411 | // fibril_rwlock_t lock; |
411 | fibril_rwlock_t lock; |
412 | ipc_call_t answer; |
412 | ipc_call_t answer; |
413 | int answer_count; |
413 | int answer_count; |
414 | 414 | ||
415 | /* |
415 | /* |
416 | * Accept the connection |
416 | * Accept the connection |
417 | * - Answer the first IPC_M_CONNECT_ME_TO call. |
417 | * - Answer the first IPC_M_CONNECT_ME_TO call. |
418 | */ |
418 | */ |
419 | ipc_answer_0( callid, EOK ); |
419 | ipc_answer_0( callid, EOK ); |
420 | 420 | ||
421 | // The client connection is only in one fibril and therefore no additional locks are needed. |
421 | // The client connection is only in one fibril and therefore no additional locks are needed. |
422 | 422 | ||
423 | socket_cores_initialize( & local_sockets ); |
423 | socket_cores_initialize( & local_sockets ); |
424 | // fibril_rwlock_initialize( & lock ); |
424 | fibril_rwlock_initialize( & lock ); |
425 | 425 | ||
426 | while( keep_on_going ){ |
426 | while( keep_on_going ){ |
427 | // refresh data |
427 | // refresh data |
428 | refresh_answer( & answer, & answer_count ); |
428 | refresh_answer( & answer, & answer_count ); |
429 | 429 | ||
430 | callid = async_get_call( & call ); |
430 | callid = async_get_call( & call ); |
431 | // printf( "message %d\n", IPC_GET_METHOD( * call )); |
431 | // printf( "message %d\n", IPC_GET_METHOD( * call )); |
432 | 432 | ||
433 | switch( IPC_GET_METHOD( call )){ |
433 | switch( IPC_GET_METHOD( call )){ |
434 | case IPC_M_PHONE_HUNGUP: |
434 | case IPC_M_PHONE_HUNGUP: |
435 | keep_on_going = false; |
435 | keep_on_going = false; |
436 | res = EOK; |
436 | res = EOK; |
437 | break; |
437 | break; |
438 | case NET_SOCKET: |
438 | case NET_SOCKET: |
439 | // fibril_rwlock_write_lock( & lock ); |
439 | fibril_rwlock_write_lock( & lock ); |
440 | res = socket_create( & local_sockets, app_phone, NULL, SOCKET_SET_SOCKET_ID( answer )); |
440 | res = socket_create( & local_sockets, app_phone, NULL, SOCKET_SET_SOCKET_ID( answer )); |
441 | // fibril_rwlock_write_unlock( & lock ); |
441 | fibril_rwlock_write_unlock( & lock ); |
442 | // TODO max fragment size |
442 | // TODO max fragment size |
443 | * SOCKET_SET_DATA_FRAGMENT_SIZE( answer ) = MAX_UDP_FRAGMENT_SIZE; |
443 | * SOCKET_SET_DATA_FRAGMENT_SIZE( answer ) = MAX_UDP_FRAGMENT_SIZE; |
444 | * SOCKET_SET_HEADER_SIZE( answer ) = sizeof( udp_header_t ); |
444 | * SOCKET_SET_HEADER_SIZE( answer ) = sizeof( udp_header_t ); |
445 | answer_count = 3; |
445 | answer_count = 3; |
446 | break; |
446 | break; |
447 | case NET_SOCKET_BIND: |
447 | case NET_SOCKET_BIND: |
448 | res = data_receive(( void ** ) & addr, & addrlen ); |
448 | res = data_receive(( void ** ) & addr, & addrlen ); |
449 | if( res == EOK ){ |
449 | if( res == EOK ){ |
450 | // fibril_rwlock_write_lock( & lock ); |
450 | fibril_rwlock_read_lock( & lock ); |
451 | fibril_rwlock_write_lock( & udp_globals.lock ); |
451 | fibril_rwlock_write_lock( & udp_globals.lock ); |
452 | res = socket_bind( & local_sockets, & udp_globals.sockets, SOCKET_GET_SOCKET_ID( call ), addr, addrlen, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END, udp_globals.last_used_port ); |
452 | res = socket_bind( & local_sockets, & udp_globals.sockets, SOCKET_GET_SOCKET_ID( call ), addr, addrlen, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END, udp_globals.last_used_port ); |
453 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
453 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
454 | // fibril_rwlock_write_unlock( & lock ); |
454 | fibril_rwlock_read_unlock( & lock ); |
455 | free( addr ); |
455 | free( addr ); |
456 | } |
456 | } |
457 | break; |
457 | break; |
458 | case NET_SOCKET_SENDTO: |
458 | case NET_SOCKET_SENDTO: |
459 | res = data_receive(( void ** ) & addr, & addrlen ); |
459 | res = data_receive(( void ** ) & addr, & addrlen ); |
460 | if( res == EOK ){ |
460 | if( res == EOK ){ |
461 | // fibril_rwlock_read_lock( & lock ); |
461 | fibril_rwlock_read_lock( & lock ); |
462 | fibril_rwlock_read_lock( & udp_globals.lock ); |
462 | fibril_rwlock_write_lock( & udp_globals.lock ); |
463 | res = udp_sendto_message( & local_sockets, SOCKET_GET_SOCKET_ID( call ), addr, addrlen, SOCKET_GET_DATA_FRAGMENTS( call ), SOCKET_GET_DATA_FRAGMENT_SIZE( call ), SOCKET_GET_FLAGS( call )); |
463 | res = udp_sendto_message( & local_sockets, SOCKET_GET_SOCKET_ID( call ), addr, addrlen, SOCKET_GET_DATA_FRAGMENTS( call ), SOCKET_GET_DATA_FRAGMENT_SIZE( call ), SOCKET_GET_FLAGS( call )); |
464 | fibril_rwlock_read_unlock( & udp_globals.lock ); |
464 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
465 | // fibril_rwlock_read_unlock( & lock ); |
465 | fibril_rwlock_read_unlock( & lock ); |
466 | free( addr ); |
466 | free( addr ); |
467 | } |
467 | } |
468 | break; |
468 | break; |
469 | case NET_SOCKET_RECVFROM: |
469 | case NET_SOCKET_RECVFROM: |
470 | // fibril_rwlock_read_lock( & lock ); |
470 | fibril_rwlock_read_lock( & lock ); |
471 | fibril_rwlock_read_lock( & udp_globals.lock ); |
471 | fibril_rwlock_write_lock( & udp_globals.lock ); |
472 | res = udp_recvfrom_message( & local_sockets, SOCKET_GET_SOCKET_ID( call ), SOCKET_GET_FLAGS( call ), & addrlen ); |
472 | res = udp_recvfrom_message( & local_sockets, SOCKET_GET_SOCKET_ID( call ), SOCKET_GET_FLAGS( call ), & addrlen ); |
473 | fibril_rwlock_read_unlock( & udp_globals.lock ); |
473 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
474 | // fibril_rwlock_read_unlock( & lock ); |
474 | fibril_rwlock_read_unlock( & lock ); |
475 | if( res > 0 ){ |
475 | if( res > 0 ){ |
476 | * SOCKET_SET_READ_DATA_LENGTH( answer ) = res; |
476 | * SOCKET_SET_READ_DATA_LENGTH( answer ) = res; |
477 | * SOCKET_SET_ADDRESS_LENGTH( answer ) = addrlen; |
477 | * SOCKET_SET_ADDRESS_LENGTH( answer ) = addrlen; |
478 | answer_count = 2; |
478 | answer_count = 2; |
479 | res = EOK; |
479 | res = EOK; |
480 | } |
480 | } |
481 | break; |
481 | break; |
482 | case NET_SOCKET_CLOSE: |
482 | case NET_SOCKET_CLOSE: |
483 | // fibril_rwlock_write_lock( & lock ); |
483 | fibril_rwlock_write_lock( & lock ); |
484 | fibril_rwlock_write_lock( & udp_globals.lock ); |
484 | fibril_rwlock_write_lock( & udp_globals.lock ); |
485 | res = socket_destroy( udp_globals.net_phone, SOCKET_GET_SOCKET_ID( call ), & local_sockets, & udp_globals.sockets ); |
485 | res = socket_destroy( udp_globals.net_phone, SOCKET_GET_SOCKET_ID( call ), & local_sockets, & udp_globals.sockets, NULL ); |
486 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
486 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
487 | // fibril_rwlock_write_unlock( & lock ); |
487 | fibril_rwlock_write_unlock( & lock ); |
488 | break; |
488 | break; |
489 | case NET_SOCKET_GETSOCKOPT: |
489 | case NET_SOCKET_GETSOCKOPT: |
490 | case NET_SOCKET_SETSOCKOPT: |
490 | case NET_SOCKET_SETSOCKOPT: |
491 | default: |
491 | default: |
492 | res = ENOTSUP; |
492 | res = ENOTSUP; |
493 | break; |
493 | break; |
494 | } |
494 | } |
495 | 495 | ||
496 | // printf( "res = %d\n", res ); |
496 | // printf( "res = %d\n", res ); |
497 | 497 | ||
498 | answer_call( callid, res, & answer, answer_count ); |
498 | answer_call( callid, res, & answer, answer_count ); |
499 | } |
499 | } |
500 | 500 | ||
501 | // TODO call socket_destroy() on all bound! |
501 | // release all local sockets |
502 | socket_cores_destroy( & local_sockets ); |
502 | socket_cores_release( udp_globals.net_phone, & local_sockets, & udp_globals.sockets, NULL ); |
503 | 503 | ||
504 | return EOK; |
504 | return EOK; |
505 | } |
505 | } |
506 | 506 | ||
507 | int udp_sendto_message( socket_cores_ref local_sockets, int socket_id, const struct sockaddr * addr, socklen_t addrlen, int fragments, size_t data_fragment_size, int flags ){ |
507 | int udp_sendto_message( socket_cores_ref local_sockets, int socket_id, const struct sockaddr * addr, socklen_t addrlen, int fragments, size_t data_fragment_size, int flags ){ |
508 | ERROR_DECLARE; |
508 | ERROR_DECLARE; |
509 | 509 | ||
510 | socket_core_ref socket; |
510 | socket_core_ref socket; |
511 | packet_t packet; |
511 | packet_t packet; |
512 | packet_t next_packet; |
512 | packet_t next_packet; |
513 | udp_header_ref header; |
513 | udp_header_ref header; |
514 | int index; |
514 | int index; |
515 | size_t total_length; |
515 | size_t total_length; |
516 | int result; |
516 | int result; |
517 | uint16_t dest_port; |
517 | uint16_t dest_port; |
518 | uint32_t checksum; |
518 | uint32_t checksum; |
519 | ip_pseudo_header_ref ip_header; |
519 | ip_pseudo_header_ref ip_header; |
520 | size_t headerlen; |
520 | size_t headerlen; |
521 | device_id_t device_id; |
521 | device_id_t device_id; |
522 | 522 | ||
523 | ERROR_PROPAGATE( tl_get_address_port( addr, addrlen, & dest_port )); |
523 | ERROR_PROPAGATE( tl_get_address_port( addr, addrlen, & dest_port )); |
524 | 524 | ||
525 | socket = socket_cores_find( local_sockets, socket_id ); |
525 | socket = socket_cores_find( local_sockets, socket_id ); |
526 | if( ! socket ) return ENOTSOCK; |
526 | if( ! socket ) return ENOTSOCK; |
527 | 527 | ||
528 | if(( socket->port <= 0 ) && udp_globals.autobinding ){ |
528 | if(( socket->port <= 0 ) && udp_globals.autobinding ){ |
529 | // bind the socket to a random free port if not bound |
529 | // bind the socket to a random free port if not bound |
530 | do{ |
530 | do{ |
531 | // try to find a free port |
531 | // try to find a free port |
532 | fibril_rwlock_read_unlock( & udp_globals.lock ); |
532 | // fibril_rwlock_read_unlock( & udp_globals.lock ); |
533 | fibril_rwlock_write_lock( & udp_globals.lock ); |
533 | // fibril_rwlock_write_lock( & udp_globals.lock ); |
534 | // might be changed in the meantime |
534 | // might be changed in the meantime |
535 | if( socket->port <= 0 ){ |
535 | if( socket->port <= 0 ){ |
536 | ERROR_PROPAGATE( socket_bind_free_port( & udp_globals.sockets, socket, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END, udp_globals.last_used_port )); |
536 | if( ERROR_OCCURRED( socket_bind_free_port( & udp_globals.sockets, socket, UDP_FREE_PORTS_START, UDP_FREE_PORTS_END, udp_globals.last_used_port ))){ |
- | 537 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
|
- | 538 | fibril_rwlock_read_lock( & udp_globals.lock ); |
|
- | 539 | return ERROR_CODE; |
|
- | 540 | } |
|
537 | // set the next port as the search starting port number |
541 | // set the next port as the search starting port number |
538 | udp_globals.last_used_port = socket->port; |
542 | udp_globals.last_used_port = socket->port; |
539 | } |
543 | } |
540 | fibril_rwlock_write_unlock( & udp_globals.lock ); |
544 | // fibril_rwlock_write_unlock( & udp_globals.lock ); |
541 | fibril_rwlock_read_lock( & udp_globals.lock ); |
545 | // fibril_rwlock_read_lock( & udp_globals.lock ); |
542 | // might be changed in the meantime |
546 | // might be changed in the meantime |
543 | }while( socket->port <= 0 ); |
547 | }while( socket->port <= 0 ); |
544 | } |
548 | } |
545 | 549 | ||
546 | // TODO do not ask all the time |
550 | // TODO do not ask all the time |
547 | ERROR_PROPAGATE( ip_packet_size_req( udp_globals.ip_phone, -1, & udp_globals.packet_dimension.addr_len, & udp_globals.packet_dimension.prefix, & udp_globals.packet_dimension.content, & udp_globals.packet_dimension.suffix )); |
551 | ERROR_PROPAGATE( ip_packet_size_req( udp_globals.ip_phone, -1, & udp_globals.packet_dimension.addr_len, & udp_globals.packet_dimension.prefix, & udp_globals.packet_dimension.content, & udp_globals.packet_dimension.suffix )); |
548 | 552 | ||
549 | // read the first packet fragment |
553 | // read the first packet fragment |
550 | result = tl_socket_read_packet_data( udp_globals.net_phone, & packet, sizeof( udp_header_t ), & udp_globals.packet_dimension, addr, addrlen ); |
554 | result = tl_socket_read_packet_data( udp_globals.net_phone, & packet, sizeof( udp_header_t ), & udp_globals.packet_dimension, addr, addrlen ); |
551 | if( result < 0 ) return result; |
555 | if( result < 0 ) return result; |
552 | total_length = ( size_t ) result; |
556 | total_length = ( size_t ) result; |
553 | if( udp_globals.checksum_computing ){ |
557 | if( udp_globals.checksum_computing ){ |
554 | checksum = compute_checksum( 0, packet_get_data( packet ), packet_get_data_length( packet )); |
558 | checksum = compute_checksum( 0, packet_get_data( packet ), packet_get_data_length( packet )); |
555 | }else{ |
559 | }else{ |
556 | checksum = 0; |
560 | checksum = 0; |
557 | } |
561 | } |
558 | // prefix the udp header |
562 | // prefix the udp header |
559 | header = PACKET_PREFIX( packet, udp_header_t ); |
563 | header = PACKET_PREFIX( packet, udp_header_t ); |
560 | if( ! header ){ |
564 | if( ! header ){ |
561 | return udp_release_and_return( packet, ENOMEM ); |
565 | return udp_release_and_return( packet, ENOMEM ); |
562 | } |
566 | } |
563 | bzero( header, sizeof( * header )); |
567 | bzero( header, sizeof( * header )); |
564 | // read the rest of the packet fragments |
568 | // read the rest of the packet fragments |
565 | for( index = 1; index < fragments; ++ index ){ |
569 | for( index = 1; index < fragments; ++ index ){ |
566 | result = tl_socket_read_packet_data( udp_globals.net_phone, & next_packet, 0, & udp_globals.packet_dimension, addr, addrlen ); |
570 | result = tl_socket_read_packet_data( udp_globals.net_phone, & next_packet, 0, & udp_globals.packet_dimension, addr, addrlen ); |
567 | if( result < 0 ){ |
571 | if( result < 0 ){ |
568 | return udp_release_and_return( packet, result ); |
572 | return udp_release_and_return( packet, result ); |
569 | } |
573 | } |
570 | packet = pq_add( packet, next_packet, index, 0 ); |
574 | packet = pq_add( packet, next_packet, index, 0 ); |
571 | total_length += ( size_t ) result; |
575 | total_length += ( size_t ) result; |
572 | if( udp_globals.checksum_computing ){ |
576 | if( udp_globals.checksum_computing ){ |
573 | checksum = compute_checksum( checksum, packet_get_data( next_packet ), packet_get_data_length( next_packet )); |
577 | checksum = compute_checksum( checksum, packet_get_data( next_packet ), packet_get_data_length( next_packet )); |
574 | } |
578 | } |
575 | } |
579 | } |
576 | // set the udp header |
580 | // set the udp header |
577 | header->source_port = htons(( socket->port > 0 ) ? socket->port : 0 ); |
581 | header->source_port = htons(( socket->port > 0 ) ? socket->port : 0 ); |
578 | header->destination_port = htons( dest_port ); |
582 | header->destination_port = htons( dest_port ); |
579 | header->total_length = htons( total_length + sizeof( * header )); |
583 | header->total_length = htons( total_length + sizeof( * header )); |
580 | header->checksum = 0; |
584 | header->checksum = 0; |
581 | if( udp_globals.checksum_computing ){ |
585 | if( udp_globals.checksum_computing ){ |
582 | if( ERROR_OCCURRED( ip_get_route_req( udp_globals.ip_phone, IPPROTO_UDP, addr, addrlen, & device_id, & ip_header, & headerlen ))){ |
586 | if( ERROR_OCCURRED( ip_get_route_req( udp_globals.ip_phone, IPPROTO_UDP, addr, addrlen, & device_id, & ip_header, & headerlen ))){ |
583 | return udp_release_and_return( packet, ERROR_CODE ); |
587 | return udp_release_and_return( packet, ERROR_CODE ); |
584 | } |
588 | } |
585 | if( ERROR_OCCURRED( ip_client_set_pseudo_header_data_length( ip_header, headerlen, total_length + sizeof( udp_header_t )))){ |
589 | if( ERROR_OCCURRED( ip_client_set_pseudo_header_data_length( ip_header, headerlen, total_length + sizeof( udp_header_t )))){ |
586 | free( ip_header ); |
590 | free( ip_header ); |
587 | return udp_release_and_return( packet, ERROR_CODE ); |
591 | return udp_release_and_return( packet, ERROR_CODE ); |
588 | } |
592 | } |
589 | checksum = compute_checksum( checksum, ip_header, headerlen ); |
593 | checksum = compute_checksum( checksum, ip_header, headerlen ); |
590 | checksum = compute_checksum( checksum, ( uint8_t * ) header, sizeof( * header )); |
594 | checksum = compute_checksum( checksum, ( uint8_t * ) header, sizeof( * header )); |
591 | header->checksum = htons( flip_checksum( compact_checksum( checksum ))); |
595 | header->checksum = htons( flip_checksum( compact_checksum( checksum ))); |
592 | free( ip_header ); |
596 | free( ip_header ); |
593 | }else{ |
597 | }else{ |
594 | device_id = -1; |
598 | device_id = -1; |
595 | } |
599 | } |
596 | // prepare the first packet fragment |
600 | // prepare the first packet fragment |
597 | if( ERROR_OCCURRED( ip_client_prepare_packet( packet, IPPROTO_UDP, 0, 0, 0, 0 ))){ |
601 | if( ERROR_OCCURRED( ip_client_prepare_packet( packet, IPPROTO_UDP, 0, 0, 0, 0 ))){ |
598 | return udp_release_and_return( packet, ERROR_CODE ); |
602 | return udp_release_and_return( packet, ERROR_CODE ); |
599 | } |
603 | } |
600 | // send the packet |
604 | // send the packet |
601 | return ip_send_msg( udp_globals.ip_phone, device_id, packet, SERVICE_UDP, 0 ); |
605 | return ip_send_msg( udp_globals.ip_phone, device_id, packet, SERVICE_UDP, 0 ); |
602 | } |
606 | } |
603 | 607 | ||
604 | int udp_recvfrom_message( socket_cores_ref local_sockets, int socket_id, int flags, size_t * addrlen ){ |
608 | int udp_recvfrom_message( socket_cores_ref local_sockets, int socket_id, int flags, size_t * addrlen ){ |
605 | ERROR_DECLARE; |
609 | ERROR_DECLARE; |
606 | 610 | ||
607 | socket_core_ref socket; |
611 | socket_core_ref socket; |
608 | int packet_id; |
612 | int packet_id; |
609 | packet_t packet; |
613 | packet_t packet; |
610 | udp_header_ref header; |
614 | udp_header_ref header; |
611 | struct sockaddr * addr; |
615 | struct sockaddr * addr; |
612 | size_t length; |
616 | size_t length; |
613 | packet_t next_packet; |
- | |
614 | uint8_t * data; |
617 | uint8_t * data; |
615 | size_t fragments; |
- | |
616 | size_t * lengths; |
- | |
617 | size_t index; |
- | |
618 | int result; |
618 | int result; |
619 | 619 | ||
620 | // find the socket |
620 | // find the socket |
621 | socket = socket_cores_find( local_sockets, socket_id ); |
621 | socket = socket_cores_find( local_sockets, socket_id ); |
622 | if( ! socket ) return ENOTSOCK; |
622 | if( ! socket ) return ENOTSOCK; |
623 | // get the next received packet |
623 | // get the next received packet |
624 | packet_id = dyn_fifo_value( & socket->received ); |
624 | packet_id = dyn_fifo_value( & socket->received ); |
625 | if( packet_id < 0 ) return NO_DATA; |
625 | if( packet_id < 0 ) return NO_DATA; |
626 | ERROR_PROPAGATE( packet_translate( udp_globals.net_phone, & packet, packet_id )); |
626 | ERROR_PROPAGATE( packet_translate( udp_globals.net_phone, & packet, packet_id )); |
627 | // get udp header |
627 | // get udp header |
628 | data = packet_get_data( packet ); |
628 | data = packet_get_data( packet ); |
629 | if( ! data ){ |
629 | if( ! data ){ |
630 | pq_release( udp_globals.net_phone, packet_id ); |
630 | pq_release( udp_globals.net_phone, packet_id ); |
631 | return NO_DATA; |
631 | return NO_DATA; |
632 | } |
632 | } |
633 | header = ( udp_header_ref ) data; |
633 | header = ( udp_header_ref ) data; |
634 | 634 | ||
635 | // set the source address port |
635 | // set the source address port |
636 | result = packet_get_addr( packet, ( uint8_t ** ) & addr, NULL ); |
636 | result = packet_get_addr( packet, ( uint8_t ** ) & addr, NULL ); |
637 | if( ERROR_OCCURRED( tl_set_address_port( addr, result, ntohs( header->source_port )))){ |
637 | if( ERROR_OCCURRED( tl_set_address_port( addr, result, ntohs( header->source_port )))){ |
638 | pq_release( udp_globals.net_phone, packet_id ); |
638 | pq_release( udp_globals.net_phone, packet_id ); |
639 | return ERROR_CODE; |
639 | return ERROR_CODE; |
640 | } |
640 | } |
641 | * addrlen = ( size_t ) result; |
641 | * addrlen = ( size_t ) result; |
642 | // send the source address |
642 | // send the source address |
643 | ERROR_PROPAGATE( data_reply( addr, * addrlen )); |
643 | ERROR_PROPAGATE( data_reply( addr, * addrlen )); |
644 | 644 | ||
645 | next_packet = pq_next( packet ); |
- | |
646 | if( ! next_packet ){ |
- | |
647 | // write all if only one fragment |
- | |
648 | ERROR_PROPAGATE( data_reply( data + sizeof( udp_header_t ), packet_get_data_length( packet ) - sizeof( udp_header_t ))); |
- | |
649 | // store the total length |
645 | // trim the header |
650 | length = packet_get_data_length( packet ) - sizeof( udp_header_t ); |
646 | ERROR_PROPAGATE( packet_trim( packet, sizeof( udp_header_t ), 0 )); |
651 | }else{ |
- | |
652 | // count the packet fragments |
- | |
653 | fragments = 1; |
- | |
654 | next_packet = pq_next( packet ); |
- | |
655 | while(( next_packet = pq_next( next_packet ))){ |
- | |
656 | ++ fragments; |
- | |
657 | } |
647 | |
658 | // compute and store the fragment lengths |
- | |
659 | lengths = ( size_t * ) malloc( sizeof( size_t ) * fragments + sizeof( size_t )); |
- | |
660 | if( ! lengths ) return ENOMEM; |
- | |
661 | lengths[ 0 ] = packet_get_data_length( packet ) - sizeof( udp_header_t ); |
- | |
662 | lengths[ fragments ] = lengths[ 0 ]; |
- | |
663 | next_packet = pq_next( packet ); |
- | |
664 | for( index = 1; index < fragments; ++ index ){ |
- | |
665 | lengths[ index ] = packet_get_data_length( next_packet ); |
- | |
666 | lengths[ fragments ] += lengths[ index ]; |
- | |
667 | next_packet = pq_next( packet ); |
- | |
668 | }while( next_packet ); |
- | |
669 | // write the fragment lengths |
648 | // reply the packets |
670 | ERROR_PROPAGATE( data_reply( lengths, sizeof( int ) * ( fragments + 1 ))); |
- | |
671 | // write the first fragment |
- | |
672 | ERROR_PROPAGATE( data_reply( data + sizeof( udp_header_t ), lengths[ 0 ] )); |
- | |
673 | next_packet = pq_next( packet ); |
- | |
674 | // write the rest of the fragments |
- | |
675 | for( index = 1; index < fragments; ++ index ){ |
- | |
676 | ERROR_PROPAGATE( data_reply( packet_get_data( next_packet ), lengths[ index ] )); |
649 | ERROR_PROPAGATE( socket_reply_packets( packet, & length )); |
677 | next_packet = pq_next( packet ); |
- | |
678 | }while( next_packet ); |
- | |
679 | // store the total length |
- | |
680 | length = lengths[ fragments ]; |
- | |
681 | free( lengths ); |
- | |
682 | } |
650 | |
683 | // release the packet |
651 | // release the packet |
684 | dyn_fifo_pop( & socket->received ); |
652 | dyn_fifo_pop( & socket->received ); |
685 | pq_release( udp_globals.net_phone, packet_get_id( packet )); |
653 | pq_release( udp_globals.net_phone, packet_get_id( packet )); |
686 | // return the total length |
654 | // return the total length |
687 | return ( int ) length; |
655 | return ( int ) length; |
688 | } |
656 | } |
689 | 657 | ||
690 | int udp_release_and_return( packet_t packet, int result ){ |
658 | int udp_release_and_return( packet_t packet, int result ){ |
691 | pq_release( udp_globals.net_phone, packet_get_id( packet )); |
659 | pq_release( udp_globals.net_phone, packet_get_id( packet )); |
692 | return result; |
660 | return result; |
693 | } |
661 | } |
694 | 662 | ||
695 | /** @} |
663 | /** @} |
696 | */ |
664 | */ |
697 | 665 |