… | |
… | |
33 | */ |
33 | */ |
34 | |
34 | |
35 | using namespace std; |
35 | using namespace std; |
36 | |
36 | |
37 | #include <global.h> |
37 | #include <global.h> |
38 | #include <newclient.h> |
|
|
39 | #include <sproto.h> |
38 | #include <sproto.h> |
|
|
39 | #include <cstdarg> |
40 | |
40 | |
41 | #ifdef __linux__ |
41 | #ifdef __linux__ |
42 | # include <sys/types.h> |
42 | # include <sys/types.h> |
43 | # include <sys/socket.h> |
43 | # include <sys/socket.h> |
44 | # include <netinet/in.h> |
44 | # include <netinet/in.h> |
45 | # define TCP_HZ 1000 // sorry... |
|
|
46 | # include <netinet/tcp.h> |
45 | # include <netinet/tcp.h> |
47 | #endif |
46 | #endif |
48 | |
47 | |
49 | // use a really low timeout, as it doesn't cost any bandwidth, and you can |
48 | // use a really low timeout, as it doesn't cost any bandwidth, and you can |
50 | // easily die in 20 seconds... |
49 | // easily die in 20 seconds... |
51 | #define SOCKET_TIMEOUT1 10 |
50 | #define SOCKET_TIMEOUT1 10 * 1000 |
52 | #define SOCKET_TIMEOUT2 20 |
51 | #define SOCKET_TIMEOUT2 20 * 1000 |
53 | |
52 | |
54 | void |
53 | void |
55 | Socket_Flush (NewSocket * ns) |
54 | client::flush () |
56 | { |
55 | { |
57 | #ifdef __linux__ |
56 | #ifdef __linux__ |
58 | // check time of last ack, and, if too old, kill connection |
57 | // check time of last ack, and, if too old, kill connection |
59 | struct tcp_info tcpi; |
58 | struct tcp_info tcpi; |
60 | socklen_t len = sizeof (tcpi); |
59 | socklen_t len = sizeof (tcpi); |
61 | |
60 | |
62 | if (!getsockopt (ns->fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
61 | if (!getsockopt (fd, IPPROTO_TCP, TCP_INFO, &tcpi, &len) && len == sizeof (tcpi)) |
63 | { |
62 | { |
64 | unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; |
63 | unsigned int diff = tcpi.tcpi_last_ack_recv - tcpi.tcpi_last_data_sent; |
65 | |
64 | |
|
|
65 | rtt = tcpi.tcpi_rtt; |
|
|
66 | rttvar = tcpi.tcpi_rttvar; |
|
|
67 | |
66 | if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 * TCP_HZ < diff && diff < 0x80000000UL // ack delayed for 20s |
68 | if (tcpi.tcpi_unacked && SOCKET_TIMEOUT1 < diff && diff < 0x80000000UL // ack delayed for 20s |
67 | && SOCKET_TIMEOUT2 * TCP_HZ < tcpi.tcpi_last_data_sent) // no data sent for 10s |
69 | && SOCKET_TIMEOUT2 < tcpi.tcpi_last_data_sent) // no data sent for 10s |
68 | { |
70 | { |
69 | LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", ns->fd, |
71 | LOG (llevDebug, "Connection on fd %d closed due to ack timeout (%u/%u/%u)\n", fd, |
70 | (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked); |
72 | (unsigned) tcpi.tcpi_last_ack_recv, (unsigned) tcpi.tcpi_last_data_sent, (unsigned) tcpi.tcpi_unacked); |
71 | ns->status = Ns_Dead; |
73 | destroy (); |
72 | } |
74 | } |
73 | } |
75 | } |
74 | |
|
|
75 | int val; |
|
|
76 | |
|
|
77 | val = 0; |
|
|
78 | setsockopt (ns->fd, IPPROTO_TCP, TCP_CORK, &val, sizeof (val)); |
|
|
79 | val = 1; |
|
|
80 | setsockopt (ns->fd, IPPROTO_TCP, TCP_CORK, &val, sizeof (val)); |
|
|
81 | #endif |
76 | #endif |
82 | } |
|
|
83 | |
77 | |
|
|
78 | /** |
|
|
79 | * Writes data to socket. |
|
|
80 | * |
|
|
81 | * When the socket is clear to write, and we have backlogged data, this |
|
|
82 | * is called to write it out. |
|
|
83 | */ |
|
|
84 | |
|
|
85 | if (!outputbuffer.len || socket_ev.poll () & PE_W) |
|
|
86 | return; |
|
|
87 | |
|
|
88 | write_outputbuffer (); |
|
|
89 | } |
|
|
90 | |
|
|
91 | void |
|
|
92 | client::write_outputbuffer () |
|
|
93 | { |
|
|
94 | while (outputbuffer.len) |
|
|
95 | { |
|
|
96 | int res = write (fd, outputbuffer.data + outputbuffer.start, |
|
|
97 | min (outputbuffer.len, SOCKETBUFSIZE - outputbuffer.start)); |
|
|
98 | |
|
|
99 | if (res > 0) |
|
|
100 | { |
|
|
101 | outputbuffer.start += res; |
|
|
102 | /* wrap back to start of buffer */ |
|
|
103 | if (outputbuffer.start == SOCKETBUFSIZE) |
|
|
104 | outputbuffer.start = 0; |
|
|
105 | |
|
|
106 | outputbuffer.len -= res; |
|
|
107 | #ifdef CS_LOGSTATS |
|
|
108 | cst_tot.obytes += res; |
|
|
109 | cst_lst.obytes += res; |
|
|
110 | #endif |
|
|
111 | } |
|
|
112 | else if (res == 0) |
|
|
113 | { |
|
|
114 | LOG (llevError, "socket write failed, connection closed.\n"); |
|
|
115 | destroy (); |
|
|
116 | return; |
|
|
117 | } |
|
|
118 | else if (errno == EINTR) |
|
|
119 | { |
|
|
120 | // just retry |
|
|
121 | } |
|
|
122 | else if (errno == EAGAIN) |
|
|
123 | { |
|
|
124 | // delay till ready |
|
|
125 | socket_ev.poll (socket_ev.poll () | PE_W); |
|
|
126 | socket_ev.start (); |
|
|
127 | return; |
|
|
128 | } |
|
|
129 | else |
|
|
130 | { |
|
|
131 | LOG (llevError, "socket write failed: %s\n", strerror (errno)); |
|
|
132 | destroy (); |
|
|
133 | return; |
|
|
134 | } |
|
|
135 | } |
|
|
136 | |
|
|
137 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
|
138 | } |
|
|
139 | |
|
|
140 | /****************************************************************************** |
|
|
141 | * |
|
|
142 | * Start of read routines. |
|
|
143 | * |
|
|
144 | ******************************************************************************/ |
|
|
145 | |
|
|
146 | int |
|
|
147 | client::next_packet () |
|
|
148 | { |
|
|
149 | if (inbuf_len >= 2) |
|
|
150 | { |
|
|
151 | int pkt_len = (inbuf [0] << 8) | inbuf [1]; |
|
|
152 | |
|
|
153 | if (inbuf_len >= 2 + pkt_len) |
|
|
154 | return 2 + pkt_len; |
|
|
155 | |
|
|
156 | if (inbuf_len == sizeof (inbuf)) |
|
|
157 | { |
|
|
158 | send_packet_printf ("drawinfo %d input buffer overflow - closing connection.", NDI_RED); |
|
|
159 | destroy (); |
|
|
160 | return -1; |
|
|
161 | } |
|
|
162 | } |
|
|
163 | |
|
|
164 | return 0; |
|
|
165 | } |
|
|
166 | |
|
|
167 | void |
|
|
168 | client::skip_packet (int len) |
|
|
169 | { |
|
|
170 | inbuf_len -= len; |
|
|
171 | memmove (inbuf, inbuf + len, inbuf_len); |
|
|
172 | } |
|
|
173 | |
84 | /*********************************************************************** |
174 | /***************************************************************************** |
85 | * |
175 | * Start of command dispatch area. |
86 | * SockList functions/utilities |
176 | * The commands here are protocol commands. |
87 | * |
|
|
88 | **********************************************************************/ |
177 | ****************************************************************************/ |
89 | |
178 | |
90 | void |
179 | // SocketCommand, PlayingCommand, should not exist with those ugly casts |
91 | SockList_Init (SockList * sl) |
180 | #define SC(cb) (void *)static_cast<void (*)(char *, int, client *)>(cb), |
92 | { |
181 | #define PC(cb) (void *)static_cast<void (*)(char *, int, player *)>(cb), PF_PLAYER | |
93 | sl->len = 0; |
|
|
94 | sl->buf = NULL; |
|
|
95 | } |
|
|
96 | |
182 | |
97 | void |
183 | /** |
98 | SockList_AddInt (SockList * sl, uint32 data) |
184 | * Dispatch table for the server. |
99 | { |
|
|
100 | sl->buf[sl->len++] = (data >> 24) & 0xff; |
|
|
101 | sl->buf[sl->len++] = (data >> 16) & 0xff; |
|
|
102 | sl->buf[sl->len++] = (data >> 8) & 0xff; |
|
|
103 | sl->buf[sl->len++] = data & 0xff; |
|
|
104 | } |
|
|
105 | |
|
|
106 | void |
|
|
107 | SockList_AddInt64 (SockList * sl, uint64 data) |
|
|
108 | { |
|
|
109 | sl->buf[sl->len++] = (char) ((data >> 56) & 0xff); |
|
|
110 | sl->buf[sl->len++] = (char) ((data >> 48) & 0xff); |
|
|
111 | sl->buf[sl->len++] = (char) ((data >> 40) & 0xff); |
|
|
112 | sl->buf[sl->len++] = (char) ((data >> 32) & 0xff); |
|
|
113 | |
|
|
114 | sl->buf[sl->len++] = (char) ((data >> 24) & 0xff); |
|
|
115 | sl->buf[sl->len++] = (char) ((data >> 16) & 0xff); |
|
|
116 | sl->buf[sl->len++] = (char) ((data >> 8) & 0xff); |
|
|
117 | sl->buf[sl->len++] = (char) (data & 0xff); |
|
|
118 | } |
|
|
119 | |
|
|
120 | /* Basically does the reverse of SockList_AddInt, but on |
|
|
121 | * strings instead. Same for the GetShort, but for 16 bits. |
|
|
122 | */ |
185 | */ |
123 | int |
186 | static struct packet_type packets[] = { |
124 | GetInt_String (unsigned char *data) |
187 | {"ncom", PC(NewPlayerCmd) PF_PLAYING }, |
125 | { |
188 | {"command", PC(PlayerCmd) PF_PLAYING }, |
126 | return ((data[0] << 24) + (data[1] << 16) + (data[2] << 8) + data[3]); |
|
|
127 | } |
|
|
128 | |
189 | |
129 | short |
190 | {"examine", PC(ExamineCmd) PF_PLAYING }, |
130 | GetShort_String (unsigned char *data) |
191 | {"apply", PC(ApplyCmd) PF_PLAYING }, |
131 | { |
192 | {"lookat", PC(LookAt) PF_PLAYING }, |
132 | return ((data[0] << 8) + data[1]); |
193 | {"lock", PC(LockItem) PF_PLAYING }, |
133 | } |
194 | {"mark", PC(MarkItem) PF_PLAYING }, |
|
|
195 | {"move", PC(MoveCmd) PF_PLAYING }, |
|
|
196 | {"ext", PC(ExtCmd) 0 }, /* CF+ */ |
|
|
197 | {"mapredraw", PC(MapRedrawCmd) 0 }, /* Added: phil */ |
|
|
198 | {"mapinfo", PC(MapInfoCmd) 0 }, /* CF+ */ |
134 | |
199 | |
135 | /****************************************************************************** |
200 | {"reply", SC(ReplyCmd) 0 }, |
136 | * |
201 | {"exti", SC(ExtiCmd) 0 }, /* CF+ */ |
137 | * Start of read routines. |
202 | {"addme", SC(AddMeCmd) 0 }, |
138 | * |
203 | {"askface", SC(SendFaceCmd) 0 }, /* Added: phil */ |
139 | ******************************************************************************/ |
204 | {"requestinfo", SC(RequestInfo) 0 }, |
|
|
205 | {"setfacemode", SC(SetFaceMode) 0 }, |
|
|
206 | {"setsound", SC(SetSound) 0 }, |
|
|
207 | {"setup", SC(SetUp) 0 }, |
|
|
208 | {"version", SC(VersionCmd) 0 }, |
|
|
209 | {"toggleextendedinfos", SC(ToggleExtendedInfos) 0 }, /*Added: tchize */ |
|
|
210 | {"toggleextendedtext", SC(ToggleExtendedText) 0 }, /*Added: tchize */ |
|
|
211 | {"asksmooth", SC(AskSmooth) 0 }, /*Added: tchize (smoothing technologies) */ |
|
|
212 | }; |
140 | |
213 | |
141 | /** |
214 | bool |
142 | * This reads from fd and puts the data in sl. We return true if we think |
215 | client::may_execute (const packet_type *pkt) const |
143 | * we have a full packet, 0 if we have a partial packet. The only processing |
|
|
144 | * we do is remove the intial size value. len (As passed) is the size of the |
|
|
145 | * buffer allocated in the socklist. We make the assumption the buffer is |
|
|
146 | * at least 2 bytes long. |
|
|
147 | */ |
|
|
148 | |
|
|
149 | int |
|
|
150 | SockList_ReadPacket (int fd, SockList * sl, int len) |
|
|
151 | { |
216 | { |
152 | int stat, toread; |
217 | return (!(pkt->flags & PF_PLAYER) || pl) |
|
|
218 | && (!(pkt->flags & PF_PLAYING) || (pl && pl->state == ST_PLAYING)); |
|
|
219 | } |
153 | |
220 | |
154 | /* Sanity check - shouldn't happen */ |
221 | void |
155 | if (sl->len < 0) |
222 | client::execute (const packet_type *pkt, char *data, int datalen) |
156 | { |
223 | { |
157 | abort (); |
224 | if (may_execute (pkt)) |
158 | } |
225 | { |
159 | /* We already have a partial packet */ |
226 | //TODO: only one format |
160 | if (sl->len < 2) |
227 | if (pkt->flags & PF_PLAYER) |
|
|
228 | ((void (*)(char *, int, player *))pkt->cb)((char *)data, datalen, pl); |
|
|
229 | else |
|
|
230 | ((void (*)(char *, int, client *))pkt->cb)((char *)data, datalen, this); |
161 | { |
231 | } |
162 | #ifdef WIN32 /* ***WIN32 SockList_ReadPacket: change read() to recv() */ |
232 | else |
|
|
233 | send_packet_printf ("drawinfo %d ERROR: you cannot execute '%s' now.", NDI_RED, pkt->name); |
|
|
234 | } |
163 | |
235 | |
164 | stat = recv (fd, sl->buf + sl->len, 2 - sl->len, 0); |
236 | bool |
|
|
237 | client::handle_packet () |
|
|
238 | { |
|
|
239 | int pkt_len = next_packet (); |
165 | |
240 | |
166 | #else |
241 | if (!pkt_len) |
167 | do |
242 | return false; |
|
|
243 | else if (pkt_len < 0) |
|
|
244 | { |
|
|
245 | LOG (llevError, "read error on player %s\n", |
|
|
246 | pl && pl->ob ? &pl->ob->name : "[anonymous]"); |
|
|
247 | destroy (); |
|
|
248 | return false; |
|
|
249 | } |
|
|
250 | |
|
|
251 | inbuf [pkt_len] = 0; /* Terminate buffer - useful for string data */ |
|
|
252 | |
|
|
253 | /* First, break out beginning word. There are at least |
|
|
254 | * a few commands that do not have any paremeters. If |
|
|
255 | * we get such a command, don't worry about trying |
|
|
256 | * to break it up. |
|
|
257 | */ |
|
|
258 | int datalen; |
|
|
259 | char *data = strchr ((char *)inbuf + 2, ' '); |
|
|
260 | |
|
|
261 | if (data) |
|
|
262 | { |
|
|
263 | *data++ = 0; |
|
|
264 | datalen = pkt_len - (data - (char *)inbuf); |
|
|
265 | } |
|
|
266 | else |
|
|
267 | { |
|
|
268 | data = (char *)inbuf + 2; // better read garbage than segfault |
|
|
269 | datalen = 0; |
|
|
270 | } |
|
|
271 | |
|
|
272 | for (packet_type *pkt = packets; pkt < packets + (sizeof (packets) / sizeof (packets[0])); ++pkt) |
|
|
273 | if (!strcmp ((char *)inbuf + 2, pkt->name)) |
168 | { |
274 | { |
169 | stat = read (fd, sl->buf + sl->len, 2 - sl->len); |
275 | if (pkt->flags & PF_PLAYER) |
|
|
276 | queue_command (pkt, data, datalen); |
|
|
277 | else |
|
|
278 | execute (pkt, data, datalen); |
|
|
279 | |
|
|
280 | goto next_packet; |
|
|
281 | } |
|
|
282 | |
|
|
283 | // If we get here, we didn't find a valid command. |
|
|
284 | send_packet_printf ("drawinfo %d ERROR: command '%s' not supported.", NDI_RED, (char *)inbuf + 2); |
|
|
285 | next_packet: |
|
|
286 | skip_packet (pkt_len); |
|
|
287 | |
|
|
288 | // input buffer has space again |
|
|
289 | socket_ev.poll (socket_ev.poll () | PE_R); |
|
|
290 | |
|
|
291 | return true; |
|
|
292 | } |
|
|
293 | |
|
|
294 | // callback called when socket is either readable or writable |
|
|
295 | void |
|
|
296 | client::socket_cb (iow &w, int got) |
|
|
297 | { |
|
|
298 | //TODO remove when we have better socket cleanup logic |
|
|
299 | if (destroyed) |
|
|
300 | { |
|
|
301 | socket_ev.poll (0); |
|
|
302 | return; |
|
|
303 | } |
|
|
304 | |
|
|
305 | if (got & PE_W) |
|
|
306 | { |
|
|
307 | write_outputbuffer (); |
|
|
308 | |
|
|
309 | if (!outputbuffer.len) |
|
|
310 | socket_ev.poll (socket_ev.poll () & ~PE_W); |
|
|
311 | } |
|
|
312 | |
|
|
313 | if (got & PE_R) |
|
|
314 | { |
|
|
315 | //TODO: rate-limit tcp connection in better ways, important |
|
|
316 | |
|
|
317 | int amount = sizeof (inbuf) - inbuf_len; |
|
|
318 | |
|
|
319 | if (!amount) |
170 | } |
320 | { |
171 | while ((stat == -1) && (errno == EINTR)); |
321 | // input buffer full |
172 | #endif |
322 | socket_ev.poll (socket_ev.poll () & ~PE_R); |
173 | if (stat < 0) |
323 | return; |
174 | { |
324 | } |
175 | /* In non blocking mode, EAGAIN is set when there is no |
325 | |
176 | * data available. |
326 | amount = read (fd, inbuf + inbuf_len, amount); |
177 | */ |
327 | |
178 | #ifdef WIN32 /* ***WIN32 SockList_ReadPacket: error handling for win32 */ |
328 | if (!amount) |
179 | if ((stat == -1) && WSAGetLastError () != WSAEWOULDBLOCK) |
329 | { |
|
|
330 | destroy (); |
|
|
331 | return; |
|
|
332 | } |
|
|
333 | else if (amount < 0) |
|
|
334 | { |
|
|
335 | if (errno != EAGAIN && errno != EINTR) |
180 | { |
336 | { |
181 | if (WSAGetLastError () == WSAECONNRESET) |
337 | LOG (llevError, "read error: %s\n", strerror (errno)); |
182 | LOG (llevDebug, "Connection closed by client\n"); |
338 | destroy (); |
183 | else |
339 | return; |
184 | { |
|
|
185 | LOG (llevDebug, "ReadPacket got error %d, returning 0\n", WSAGetLastError ()); |
|
|
186 | } |
|
|
187 | return -1; /* kick this user! */ |
|
|
188 | } |
340 | } |
189 | #else |
|
|
190 | if (errno != EAGAIN && errno != EWOULDBLOCK) |
|
|
191 | { |
|
|
192 | LOG (llevDebug, "ReadPacket got error %s, returning 0\n", strerror (errno)); |
|
|
193 | } |
|
|
194 | #endif |
|
|
195 | return 0; /*Error */ |
|
|
196 | } |
|
|
197 | if (stat == 0) |
|
|
198 | return -1; |
|
|
199 | sl->len += stat; |
|
|
200 | #ifdef CS_LOGSTATS |
|
|
201 | cst_tot.ibytes += stat; |
|
|
202 | cst_lst.ibytes += stat; |
|
|
203 | #endif |
|
|
204 | if (stat < 2) |
|
|
205 | return 0; /* Still don't have a full packet */ |
|
|
206 | } |
|
|
207 | /* Figure out how much more data we need to read. Add 2 from the |
|
|
208 | * end of this - size header information is not included. |
|
|
209 | */ |
|
|
210 | toread = 2 + (sl->buf[0] << 8) + sl->buf[1] - sl->len; |
|
|
211 | if ((toread + sl->len) >= len) |
|
|
212 | { |
|
|
213 | LOG (llevError, "SockList_ReadPacket: Want to read more bytes than will fit in buffer (%d>=%d).\n", toread + sl->len, len); |
|
|
214 | /* Quick hack in case for 'oldsocketmode' input. If we are |
|
|
215 | * closing the socket anyways, then reading this extra 100 bytes |
|
|
216 | * shouldn't hurt. |
|
|
217 | */ |
|
|
218 | #ifdef WIN32 /* ***win32 SockList_ReadPacket: change read() to recv() */ |
|
|
219 | recv (fd, sl->buf + 2, 100, 0); |
|
|
220 | #else |
|
|
221 | read (fd, sl->buf + 2, 100); |
|
|
222 | #endif /* end win32 */ |
|
|
223 | |
341 | |
224 | /* return error so the socket is closed */ |
342 | // should not be here, normally |
225 | return -1; |
|
|
226 | } |
|
|
227 | do |
|
|
228 | { |
|
|
229 | #ifdef WIN32 /* ***win32 SockList_ReadPacket: change read() to recv() */ |
|
|
230 | stat = recv (fd, sl->buf + sl->len, toread, 0); |
|
|
231 | #else |
|
|
232 | do |
|
|
233 | { |
343 | } |
234 | stat = read (fd, sl->buf + sl->len, toread); |
344 | else |
235 | } |
345 | { |
236 | while ((stat < 0) && (errno == EINTR)); |
346 | inbuf_len += amount; |
237 | #endif |
347 | |
238 | if (stat < 0) |
348 | cst_tot.ibytes += amount; |
|
|
349 | cst_lst.ibytes += amount; |
|
|
350 | |
|
|
351 | cmd_ev.start (); |
239 | { |
352 | } |
240 | |
|
|
241 | #ifdef WIN32 /* ***win32 SockList_ReadPacket: change error handling for win32 */ |
|
|
242 | if ((stat == -1) && WSAGetLastError () != WSAEWOULDBLOCK) |
|
|
243 | { |
|
|
244 | if (WSAGetLastError () == WSAECONNRESET) |
|
|
245 | LOG (llevDebug, "Connection closed by client\n"); |
|
|
246 | else |
|
|
247 | { |
|
|
248 | LOG (llevDebug, "ReadPacket got error %d, returning 0\n", WSAGetLastError ()); |
|
|
249 | } |
|
|
250 | return -1; /* kick this user! */ |
|
|
251 | } |
|
|
252 | #else |
|
|
253 | if (errno != EAGAIN && errno != EWOULDBLOCK) |
|
|
254 | { |
|
|
255 | LOG (llevDebug, "ReadPacket got error %s, returning 0\n", strerror (errno)); |
|
|
256 | } |
|
|
257 | #endif |
|
|
258 | return 0; /*Error */ |
|
|
259 | } |
|
|
260 | if (stat == 0) |
|
|
261 | return -1; |
|
|
262 | sl->len += stat; |
|
|
263 | #ifdef CS_LOGSTATS |
|
|
264 | cst_tot.ibytes += stat; |
|
|
265 | cst_lst.ibytes += stat; |
|
|
266 | #endif |
|
|
267 | toread -= stat; |
|
|
268 | if (toread == 0) |
|
|
269 | return 1; |
|
|
270 | if (toread < 0) |
|
|
271 | { |
|
|
272 | LOG (llevError, "SockList_ReadPacket: Read more bytes than desired.\n"); |
|
|
273 | return 1; |
|
|
274 | } |
|
|
275 | } |
353 | } |
276 | while (toread > 0); |
354 | } |
277 | return 0; |
355 | |
|
|
356 | // called whenever we have additional commands to process |
|
|
357 | void |
|
|
358 | client::cmd_cb (iw &w) |
|
|
359 | { |
|
|
360 | if (handle_packet ()) |
|
|
361 | w.start (); |
|
|
362 | else |
|
|
363 | flush (); |
278 | } |
364 | } |
279 | |
365 | |
280 | /******************************************************************************* |
366 | /******************************************************************************* |
281 | * |
367 | * |
282 | * Start of write related routines. |
368 | * Start of write related routines. |
… | |
… | |
287 | * Adds data to a socket buffer for whatever reason. |
373 | * Adds data to a socket buffer for whatever reason. |
288 | * |
374 | * |
289 | * ns is the socket we are adding the data to, buf is the start of the |
375 | * ns is the socket we are adding the data to, buf is the start of the |
290 | * data, and len is the number of bytes to add. |
376 | * data, and len is the number of bytes to add. |
291 | */ |
377 | */ |
292 | |
378 | void |
293 | static void |
379 | client::send (void *buf_, int len) |
294 | add_to_buffer (NewSocket * ns, char *buf, int len) |
|
|
295 | { |
380 | { |
|
|
381 | char *buf = (char *)buf_; |
|
|
382 | char *pos = buf; |
|
|
383 | int amt = 0; |
|
|
384 | |
|
|
385 | if (destroyed || !buf) |
|
|
386 | return; |
|
|
387 | |
|
|
388 | if ((len + outputbuffer.len) > SOCKETBUFSIZE) |
|
|
389 | { |
|
|
390 | LOG (llevDebug, "socket on fd %d has overrun internal buffer - marking as dead\n", fd); |
|
|
391 | destroy (); |
|
|
392 | return; |
|
|
393 | } |
|
|
394 | |
296 | int avail, end; |
395 | int avail, end; |
297 | |
|
|
298 | if ((len + ns->outputbuffer.len) > SOCKETBUFSIZE) |
|
|
299 | { |
|
|
300 | LOG (llevDebug, "Socket on fd %d has overrun internal buffer - marking as dead\n", ns->fd); |
|
|
301 | ns->status = Ns_Dead; |
|
|
302 | return; |
|
|
303 | } |
|
|
304 | |
396 | |
305 | /* data + end is where we start putting the new data. The last byte |
397 | /* data + end is where we start putting the new data. The last byte |
306 | * currently in use is actually data + end -1 |
398 | * currently in use is actually data + end -1 |
307 | */ |
399 | */ |
308 | |
|
|
309 | end = ns->outputbuffer.start + ns->outputbuffer.len; |
400 | end = outputbuffer.start + outputbuffer.len; |
310 | /* The buffer is already in a wrapped state, so adjust end */ |
401 | /* The buffer is already in a wrapped state, so adjust end */ |
311 | if (end >= SOCKETBUFSIZE) |
402 | if (end >= SOCKETBUFSIZE) |
312 | end -= SOCKETBUFSIZE; |
403 | end -= SOCKETBUFSIZE; |
|
|
404 | |
313 | avail = SOCKETBUFSIZE - end; |
405 | avail = SOCKETBUFSIZE - end; |
314 | |
406 | |
315 | /* We can all fit it behind the current data without wrapping */ |
407 | /* We can all fit it behind the current data without wrapping */ |
316 | if (avail >= len) |
408 | if (avail >= len) |
317 | { |
|
|
318 | memcpy (ns->outputbuffer.data + end, buf, len); |
409 | memcpy (outputbuffer.data + end, buf, len); |
319 | } |
|
|
320 | else |
410 | else |
321 | { |
411 | { |
322 | memcpy (ns->outputbuffer.data + end, buf, avail); |
412 | memcpy (outputbuffer.data + end, buf, avail); |
323 | memcpy (ns->outputbuffer.data, buf + avail, len - avail); |
413 | memcpy (outputbuffer.data, buf + avail, len - avail); |
324 | } |
414 | } |
|
|
415 | |
325 | ns->outputbuffer.len += len; |
416 | outputbuffer.len += len; |
326 | #if 0 |
|
|
327 | LOG (llevDebug, "Added %d to output buffer, total length now %d, start=%d\n", len, ns->outputbuffer.len, ns->outputbuffer.start); |
|
|
328 | #endif |
|
|
329 | } |
417 | } |
330 | |
|
|
331 | /** |
|
|
332 | * Writes data to socket. |
|
|
333 | * |
|
|
334 | * When the socket is clear to write, and we have backlogged data, this |
|
|
335 | * is called to write it out. |
|
|
336 | */ |
|
|
337 | void |
|
|
338 | write_socket_buffer (NewSocket * ns) |
|
|
339 | { |
|
|
340 | int amt, max; |
|
|
341 | |
|
|
342 | if (ns->outputbuffer.len == 0) |
|
|
343 | { |
|
|
344 | LOG (llevDebug, "write_socket_buffer called when there is no data, fd=%d\n", ns->fd); |
|
|
345 | return; |
|
|
346 | } |
|
|
347 | |
|
|
348 | do |
|
|
349 | { |
|
|
350 | max = SOCKETBUFSIZE - ns->outputbuffer.start; |
|
|
351 | if (ns->outputbuffer.len < max) |
|
|
352 | max = ns->outputbuffer.len; |
|
|
353 | |
|
|
354 | #ifdef WIN32 /* ***win32 write_socket_buffer: change write() to send() */ |
|
|
355 | amt = send (ns->fd, ns->outputbuffer.data + ns->outputbuffer.start, max, 0); |
|
|
356 | #else |
|
|
357 | do |
|
|
358 | { |
|
|
359 | amt = write (ns->fd, ns->outputbuffer.data + ns->outputbuffer.start, max); |
|
|
360 | } |
|
|
361 | while ((amt < 0) && (errno == EINTR)); |
|
|
362 | #endif |
|
|
363 | |
|
|
364 | if (amt < 0) |
|
|
365 | { /* We got an error */ |
|
|
366 | |
|
|
367 | #ifdef WIN32 /* ***win32 write_socket_buffer: change error handling */ |
|
|
368 | if (amt == -1 && WSAGetLastError () != WSAEWOULDBLOCK) |
|
|
369 | { |
|
|
370 | LOG (llevError, "New socket write failed (wsb) (%d).\n", WSAGetLastError ()); |
|
|
371 | #else |
|
|
372 | if (errno != EWOULDBLOCK) |
|
|
373 | { |
|
|
374 | LOG (llevError, "New socket write failed (wsb) (%d: %s).\n", errno, strerror (errno)); |
|
|
375 | #endif |
|
|
376 | ns->status = Ns_Dead; |
|
|
377 | return; |
|
|
378 | } |
|
|
379 | else |
|
|
380 | { /* EWOULDBLOCK */ |
|
|
381 | /* can't write it, so store it away. */ |
|
|
382 | ns->can_write = 0; |
|
|
383 | return; |
|
|
384 | } |
|
|
385 | } |
|
|
386 | ns->outputbuffer.start += amt; |
|
|
387 | /* wrap back to start of buffer */ |
|
|
388 | if (ns->outputbuffer.start == SOCKETBUFSIZE) |
|
|
389 | ns->outputbuffer.start = 0; |
|
|
390 | ns->outputbuffer.len -= amt; |
|
|
391 | #ifdef CS_LOGSTATS |
|
|
392 | cst_tot.obytes += amt; |
|
|
393 | cst_lst.obytes += amt; |
|
|
394 | #endif |
|
|
395 | } |
|
|
396 | while (ns->outputbuffer.len > 0); |
|
|
397 | } |
|
|
398 | |
|
|
399 | /** |
|
|
400 | * This writes data to the socket. - It is very low level - |
|
|
401 | * all we try and do is write out the data to the socket |
|
|
402 | * provided (ns). buf is the data to write, len is the number |
|
|
403 | * of bytes to write. IT doesn't return anything - rather, it |
|
|
404 | * updates the ns structure if we get an error. |
|
|
405 | */ |
|
|
406 | void |
|
|
407 | Write_To_Socket (NewSocket * ns, char *buf, int len) |
|
|
408 | { |
|
|
409 | int amt = 0; |
|
|
410 | char *pos = buf; |
|
|
411 | |
|
|
412 | if (ns->status == Ns_Dead || !buf) |
|
|
413 | { |
|
|
414 | LOG (llevDebug, "Write_To_Socket called with dead socket\n"); |
|
|
415 | return; |
|
|
416 | } |
|
|
417 | |
|
|
418 | #ifndef __GNU__ /* This caused problems on Hurd */ |
|
|
419 | if (!ns->can_write) |
|
|
420 | { |
|
|
421 | add_to_buffer (ns, buf, len); |
|
|
422 | return; |
|
|
423 | } |
|
|
424 | #endif |
|
|
425 | /* If we manage to write more than we wanted, take it as a bonus */ |
|
|
426 | while (len > 0) |
|
|
427 | { |
|
|
428 | |
|
|
429 | #ifdef WIN32 /* ***win32 Write_To_Socket: change write() to send() */ |
|
|
430 | amt = send (ns->fd, pos, len, 0); |
|
|
431 | #else |
|
|
432 | do |
|
|
433 | { |
|
|
434 | amt = write (ns->fd, pos, len); |
|
|
435 | } |
|
|
436 | while ((amt < 0) && (errno == EINTR)); |
|
|
437 | #endif |
|
|
438 | |
|
|
439 | if (amt < 0) |
|
|
440 | { /* We got an error */ |
|
|
441 | #ifdef WIN32 /* ***win32 Write_To_Socket: change error handling */ |
|
|
442 | if (amt == -1 && WSAGetLastError () != WSAEWOULDBLOCK) |
|
|
443 | { |
|
|
444 | LOG (llevError, "New socket write failed WTS (%d).\n", WSAGetLastError ()); |
|
|
445 | #else |
|
|
446 | if (errno != EWOULDBLOCK) |
|
|
447 | { |
|
|
448 | LOG (llevError, "New socket write failed WTS (%d: %s).\n", /* ---WIN32 */ |
|
|
449 | errno, strerror (errno)); |
|
|
450 | #endif |
|
|
451 | ns->status = Ns_Dead; |
|
|
452 | return; |
|
|
453 | } |
|
|
454 | else |
|
|
455 | { /* EWOULDBLOCK */ |
|
|
456 | /* can't write it, so store it away. */ |
|
|
457 | add_to_buffer (ns, pos, len); |
|
|
458 | ns->can_write = 0; |
|
|
459 | return; |
|
|
460 | } |
|
|
461 | } |
|
|
462 | /* amt gets set to 0 above in blocking code, so we do this as |
|
|
463 | * an else if to make sure we don't reprocess it. |
|
|
464 | */ |
|
|
465 | else if (amt == 0) |
|
|
466 | { |
|
|
467 | LOG (llevError, "Write_To_Socket: No data written out.\n"); |
|
|
468 | } |
|
|
469 | len -= amt; |
|
|
470 | pos += amt; |
|
|
471 | #ifdef CS_LOGSTATS |
|
|
472 | cst_tot.obytes += amt; |
|
|
473 | cst_lst.obytes += amt; |
|
|
474 | #endif |
|
|
475 | } |
|
|
476 | } |
|
|
477 | |
|
|
478 | |
418 | |
479 | /** |
419 | /** |
480 | * Takes a string of data, and writes it out to the socket. A very handy |
420 | * Takes a string of data, and writes it out to the socket. A very handy |
481 | * shortcut function. |
421 | * shortcut function. |
482 | */ |
422 | */ |
483 | void |
423 | void |
484 | cs_write_string (NewSocket * ns, const char *buf, int len) |
424 | client::send_packet (packet &sl) |
485 | { |
425 | { |
486 | SockList sl; |
426 | if (destroyed) |
487 | |
|
|
488 | sl.len = len; |
|
|
489 | sl.buf = (unsigned char *) buf; |
|
|
490 | Send_With_Handling (ns, &sl); |
|
|
491 | } |
|
|
492 | |
|
|
493 | |
|
|
494 | /** |
|
|
495 | * Calls Write_To_Socket to send data to the client. |
|
|
496 | * |
|
|
497 | * The only difference in this function is that we take a SockList |
|
|
498 | *, and we prepend the length information. |
|
|
499 | */ |
|
|
500 | void |
|
|
501 | Send_With_Handling (NewSocket * ns, SockList * msg) |
|
|
502 | { |
|
|
503 | unsigned char sbuf[4]; |
|
|
504 | |
|
|
505 | if (ns->status == Ns_Dead || !msg) |
|
|
506 | return; |
427 | return; |
507 | |
428 | |
508 | if (msg->len >= MAXSOCKBUF) |
429 | if (sl.length () >= MAXSOCKBUF) |
509 | { |
430 | { |
510 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", msg->len); |
431 | LOG (llevError, "Trying to send a buffer beyond properly size, len =%d\n", sl.length ()); |
511 | /* Almost certainly we've overflowed a buffer, so quite now to make |
432 | /* Almost certainly we've overflowed a buffer, so quit now to make |
512 | * it easier to debug. |
433 | * it easier to debug. |
513 | */ |
434 | */ |
514 | abort (); |
435 | abort (); |
515 | } |
436 | } |
516 | sbuf[0] = ((uint32) (msg->len) >> 8) & 0xFF; |
|
|
517 | sbuf[1] = ((uint32) (msg->len)) & 0xFF; |
|
|
518 | if (ns->status != Ns_Old) |
|
|
519 | Write_To_Socket (ns, (char *) sbuf, 2); |
|
|
520 | Write_To_Socket (ns, (char *) msg->buf, msg->len); |
|
|
521 | } |
|
|
522 | |
437 | |
523 | /** |
438 | if (!sl.length ()) |
524 | * Takes a string of data, and writes it out to the socket. A very handy |
439 | return; |
525 | * shortcut function. |
440 | |
|
|
441 | assert (sl.hdrlen == 2); |
|
|
442 | |
|
|
443 | sl.buf_ [0] = sl.length () >> 8; |
|
|
444 | sl.buf_ [1] = sl.length () ; |
|
|
445 | |
|
|
446 | send (sl.buf_, sl.length () + sl.hdrlen); |
|
|
447 | } |
|
|
448 | |
|
|
449 | void |
|
|
450 | client::send_packet (const char *buf, int len) |
|
|
451 | { |
|
|
452 | packet sl; |
|
|
453 | |
|
|
454 | sl << data (buf, len); |
|
|
455 | send_packet (sl); |
|
|
456 | } |
|
|
457 | |
|
|
458 | void |
|
|
459 | client::send_packet (const char *buf) |
|
|
460 | { |
|
|
461 | send_packet (buf, strlen (buf)); |
|
|
462 | } |
|
|
463 | |
|
|
464 | void |
|
|
465 | client::send_packet_printf (const char *format, ...) |
|
|
466 | { |
|
|
467 | packet sl; |
|
|
468 | |
|
|
469 | va_list ap; |
|
|
470 | va_start (ap, format); |
|
|
471 | sl.vprintf (format, ap); |
|
|
472 | va_end (ap); |
|
|
473 | |
|
|
474 | send_packet (sl); |
|
|
475 | } |
|
|
476 | |
|
|
477 | /*********************************************************************** |
526 | */ |
478 | * |
527 | void |
479 | * packet functions/utilities |
528 | Write_String_To_Socket (NewSocket * ns, char *buf, int len) |
480 | * |
529 | { |
481 | **********************************************************************/ |
530 | SockList sl; |
|
|
531 | |
482 | |
532 | sl.len = len; |
483 | packet::packet (const char *name) |
533 | sl.buf = (unsigned char *) buf; |
484 | { |
534 | Send_With_Handling (ns, &sl); |
485 | reset (); |
535 | } |
|
|
536 | |
486 | |
|
|
487 | int len = strlen (name); |
|
|
488 | memcpy (cur, name, len); cur += len; |
|
|
489 | *cur++ = ' '; |
|
|
490 | } |
|
|
491 | |
|
|
492 | packet &packet::operator <<(const data &v) |
|
|
493 | { |
|
|
494 | if (room () < v.len) |
|
|
495 | reset (); |
|
|
496 | else |
|
|
497 | { |
|
|
498 | if (v.len) |
|
|
499 | { |
|
|
500 | memcpy (cur, v.ptr, v.len); |
|
|
501 | cur += v.len; |
|
|
502 | } |
|
|
503 | } |
|
|
504 | |
|
|
505 | return *this; |
|
|
506 | } |
|
|
507 | |
|
|
508 | packet &packet::operator <<(const data8 &v) |
|
|
509 | { |
|
|
510 | unsigned int len = min (v.len, 0x00FF); |
|
|
511 | return *this << uint8 (len) << data (v.ptr, len); |
|
|
512 | } |
|
|
513 | |
|
|
514 | packet &packet::operator <<(const data16 &v) |
|
|
515 | { |
|
|
516 | unsigned int len = min (v.len, 0xFFFF); |
|
|
517 | return *this << uint16 (len) << data (v.ptr, len); |
|
|
518 | } |
|
|
519 | |
|
|
520 | packet &packet::operator <<(const char *v) |
|
|
521 | { |
|
|
522 | return *this << data (v, strlen (v ? v : 0)); |
|
|
523 | } |
|
|
524 | |
|
|
525 | void |
|
|
526 | packet::vprintf (const char *format, va_list ap) |
|
|
527 | { |
|
|
528 | int size = room (); |
|
|
529 | |
|
|
530 | int len = vsnprintf ((char *)cur, size, format, ap); |
|
|
531 | |
|
|
532 | if (len >= size) |
|
|
533 | return reset (); |
|
|
534 | |
|
|
535 | cur += len; |
|
|
536 | } |
537 | |
537 | |
538 | /****************************************************************************** |
538 | /****************************************************************************** |
539 | * |
539 | * |
540 | * statistics logging functions. |
540 | * statistics logging functions. |
541 | * |
541 | * |
… | |
… | |
564 | LOG (llevInfo, "CSSTAT: %.16s tot %d %d %d %d inc %d %d %d %d\n", |
564 | LOG (llevInfo, "CSSTAT: %.16s tot %d %d %d %d inc %d %d %d %d\n", |
565 | ctime (&now), cst_tot.ibytes, cst_tot.obytes, cst_tot.max_conn, |
565 | ctime (&now), cst_tot.ibytes, cst_tot.obytes, cst_tot.max_conn, |
566 | now - cst_tot.time_start, cst_lst.ibytes, cst_lst.obytes, cst_lst.max_conn, now - cst_lst.time_start); |
566 | now - cst_tot.time_start, cst_lst.ibytes, cst_lst.obytes, cst_lst.max_conn, now - cst_lst.time_start); |
567 | cst_lst.ibytes = 0; |
567 | cst_lst.ibytes = 0; |
568 | cst_lst.obytes = 0; |
568 | cst_lst.obytes = 0; |
569 | cst_lst.max_conn = socket_info.nconns; |
|
|
570 | cst_lst.time_start = now; |
569 | cst_lst.time_start = now; |
571 | } |
570 | } |
572 | #endif |
571 | #endif |
|
|
572 | |