2 * wsockd.c: charybdis websockets helper
3 * Copyright (C) 2007 Aaron Sethman <androsyn@ratbox.org>
4 * Copyright (C) 2007 ircd-ratbox development team
5 * Copyright (C) 2016 William Pitcock <nenolod@dereferenced.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
28 #define READBUF_SIZE 16384
31 #define WEBSOCKET_SERVER_KEY "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
32 #define WEBSOCKET_ANSWER_STRING_1 "HTTP/1.1 101 Switching Protocols\r\nAccess-Control-Allow-Origin: *\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: "
33 #define WEBSOCKET_ANSWER_STRING_2 "\r\n\r\n"
35 static void setup_signals(void);
38 static inline uint32_t
39 buf_to_uint32(uint8_t *buf
)
42 memcpy(&x
, buf
, sizeof(x
));
47 uint32_to_buf(uint8_t *buf
, uint32_t x
)
49 memcpy(buf
, &x
, sizeof(x
));
53 typedef struct _mod_ctl_buf
58 rb_fde_t
*F
[MAXPASSFD
];
62 typedef struct _mod_ctl
72 static mod_ctl_t
*mod_ctl
;
79 rawbuf_head_t
*modbuf_out
;
80 rawbuf_head_t
*modbuf_in
;
82 buf_head_t plainbuf_out
;
83 buf_head_t plainbuf_in
;
95 char client_key
[37]; /* maximum 36 bytes + nul */
98 #define WEBSOCKET_OPCODE_TEXT_FRAME 1
100 #define WEBSOCKET_MASK_LENGTH 4
102 #define WEBSOCKET_MAX_UNEXTENDED_PAYLOAD_DATA_LENGTH 125
105 uint8_t opcode_rsv_fin
; // opcode: 4, rsv1: 1, rsv2: 1, rsv3: 1, fin: 1
106 uint8_t payload_length_mask
; // payload_length: 7, mask: 1
110 ws_frame_hdr_t header
;
111 uint8_t payload_data
[WEBSOCKET_MAX_UNEXTENDED_PAYLOAD_DATA_LENGTH
];
112 } ws_frame_payload_t
;
115 ws_frame_hdr_t header
;
119 ws_frame_hdr_t header
;
120 uint16_t payload_length_extended
;
124 ws_frame_hdr_t header
;
125 uint64_t payload_length_extended
;
129 ws_frame_set_opcode(ws_frame_hdr_t
*header
, int opcode
)
131 header
->opcode_rsv_fin
&= ~0xF;
132 header
->opcode_rsv_fin
|= opcode
& 0xF;
136 ws_frame_set_fin(ws_frame_hdr_t
*header
, int fin
)
138 header
->opcode_rsv_fin
&= ~(0x1 << 7);
139 header
->opcode_rsv_fin
|= (fin
<< 7) & (0x1 << 7);
142 static void close_conn(conn_t
* conn
, int wait_plain
, const char *fmt
, ...);
143 static void conn_mod_read_cb(rb_fde_t
*fd
, void *data
);
144 static void conn_plain_read_cb(rb_fde_t
*fd
, void *data
);
145 static void conn_plain_process_recvq(conn_t
*conn
);
147 #define FLAG_CORK 0x01
148 #define FLAG_DEAD 0x02
149 #define FLAG_WSOCK 0x04
150 #define FLAG_KEYED 0x08
152 #define IsCork(x) ((x)->flags & FLAG_CORK)
153 #define IsDead(x) ((x)->flags & FLAG_DEAD)
154 #define IsKeyed(x) ((x)->flags & FLAG_KEYED)
156 #define SetCork(x) ((x)->flags |= FLAG_CORK)
157 #define SetDead(x) ((x)->flags |= FLAG_DEAD)
158 #define SetWS(x) ((x)->flags |= FLAG_WSOCK)
159 #define SetKeyed(x) ((x)->flags |= FLAG_KEYED)
161 #define ClearCork(x) ((x)->flags &= ~FLAG_CORK)
164 #define WAIT_PLAIN 0x1
166 #define CONN_HASH_SIZE 2000
167 #define connid_hash(x) (&connid_hash_table[(x % CONN_HASH_SIZE)])
169 static const char *remote_closed
= "Remote host closed the connection";
171 static rb_dlink_list connid_hash_table
[CONN_HASH_SIZE
];
172 static rb_dlink_list dead_list
;
174 static void conn_plain_read_shutdown_cb(rb_fde_t
*fd
, void *data
);
178 dummy_handler(int sig
)
188 struct sigaction act
;
191 act
.sa_handler
= SIG_IGN
;
192 sigemptyset(&act
.sa_mask
);
193 sigaddset(&act
.sa_mask
, SIGPIPE
);
194 sigaddset(&act
.sa_mask
, SIGALRM
);
196 sigaddset(&act
.sa_mask
, SIGTRAP
);
200 sigaddset(&act
.sa_mask
, SIGWINCH
);
201 sigaction(SIGWINCH
, &act
, 0);
203 sigaction(SIGPIPE
, &act
, 0);
205 sigaction(SIGTRAP
, &act
, 0);
208 act
.sa_handler
= dummy_handler
;
209 sigaction(SIGALRM
, &act
, 0);
216 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
219 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
221 return limit
.rlim_cur
;
223 #endif /* RLIMIT_FD_MAX */
224 return MAXCONNECTIONS
;
228 conn_add_id_hash(conn_t
* conn
, uint32_t id
)
231 rb_dlinkAdd(conn
, &conn
->node
, connid_hash(id
));
235 free_conn(conn_t
* conn
)
237 rb_linebuf_donebuf(&conn
->plainbuf_in
);
238 rb_linebuf_donebuf(&conn
->plainbuf_out
);
240 rb_free_rawbuffer(conn
->modbuf_in
);
241 rb_free_rawbuffer(conn
->modbuf_out
);
247 clean_dead_conns(void *unused
)
250 rb_dlink_node
*ptr
, *next
;
252 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
258 dead_list
.tail
= dead_list
.head
= NULL
;
262 conn_plain_write_sendq(rb_fde_t
*fd
, void *data
)
270 while((retlen
= rb_linebuf_flush(fd
, &conn
->plainbuf_out
)) > 0)
271 conn
->plain_out
+= retlen
;
273 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
275 close_conn(data
, NO_WAIT
, NULL
);
279 if(rb_linebuf_alloclen(&conn
->plainbuf_out
) > 0)
280 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
, conn_plain_write_sendq
, conn
);
282 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
286 conn_mod_write_sendq(rb_fde_t
*fd
, void *data
)
295 while((retlen
= rb_rawbuf_flush(conn
->modbuf_out
, fd
)) > 0)
296 conn
->mod_out
+= retlen
;
298 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
301 close_conn(conn
, WAIT_PLAIN
, "%s", remote_closed
);
302 err
= strerror(errno
);
303 close_conn(conn
, WAIT_PLAIN
, "Write error: %s", err
);
307 if(rb_rawbuf_length(conn
->modbuf_out
) > 0)
308 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, conn_mod_write_sendq
, conn
);
310 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
312 if(IsCork(conn
) && rb_rawbuf_length(conn
->modbuf_out
) == 0)
315 conn_plain_read_cb(conn
->plain_fd
, conn
);
320 conn_mod_write(conn_t
* conn
, void *data
, size_t len
)
322 if(IsDead(conn
)) /* no point in queueing to a dead man */
324 rb_rawbuf_append(conn
->modbuf_out
, data
, len
);
328 conn_mod_write_short_frame(conn_t
* conn
, void *data
, int len
)
332 ws_frame_set_opcode(&hdr
, WEBSOCKET_OPCODE_TEXT_FRAME
);
333 ws_frame_set_fin(&hdr
, 1);
334 hdr
.payload_length_mask
= (len
+ 2) & 0x7f;
336 conn_mod_write(conn
, &hdr
, sizeof(hdr
));
337 conn_mod_write(conn
, data
, len
);
338 conn_mod_write(conn
, "\r\n", 2);
342 conn_mod_write_long_frame(conn_t
* conn
, void *data
, int len
)
346 ws_frame_set_opcode(&hdr
.header
, WEBSOCKET_OPCODE_TEXT_FRAME
);
347 ws_frame_set_fin(&hdr
.header
, 1);
348 hdr
.header
.payload_length_mask
= 126;
349 hdr
.payload_length_extended
= htons(len
+ 2);
351 conn_mod_write(conn
, &hdr
, sizeof(hdr
));
352 conn_mod_write(conn
, data
, len
);
353 conn_mod_write(conn
, "\r\n", 2);
357 conn_mod_write_frame(conn_t
*conn
, void *data
, int len
)
359 if(IsDead(conn
)) /* no point in queueing to a dead man */
364 conn_mod_write_short_frame(conn
, data
, len
);
368 conn_mod_write_long_frame(conn
, data
, len
);
372 mod_write_ctl(rb_fde_t
*F
, void *data
)
374 mod_ctl_t
*ctl
= data
;
375 mod_ctl_buf_t
*ctl_buf
;
376 rb_dlink_node
*ptr
, *next
;
379 RB_DLINK_FOREACH_SAFE(ptr
, next
, ctl
->writeq
.head
)
382 retlen
= rb_send_fd_buf(ctl
->F
, ctl_buf
->F
, ctl_buf
->nfds
, ctl_buf
->buf
,
383 ctl_buf
->buflen
, ppid
);
386 rb_dlinkDelete(ptr
, &ctl
->writeq
);
387 for(x
= 0; x
< ctl_buf
->nfds
; x
++)
388 rb_close(ctl_buf
->F
[x
]);
389 rb_free(ctl_buf
->buf
);
393 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
397 if(rb_dlink_list_length(&ctl
->writeq
) > 0)
398 rb_setselect(ctl
->F
, RB_SELECT_WRITE
, mod_write_ctl
, ctl
);
402 mod_cmd_write_queue(mod_ctl_t
* ctl
, const void *data
, size_t len
)
404 mod_ctl_buf_t
*ctl_buf
;
405 ctl_buf
= rb_malloc(sizeof(mod_ctl_buf_t
));
406 ctl_buf
->buf
= rb_malloc(len
);
407 ctl_buf
->buflen
= len
;
408 memcpy(ctl_buf
->buf
, data
, len
);
410 rb_dlinkAddTail(ctl_buf
, &ctl_buf
->node
, &ctl
->writeq
);
411 mod_write_ctl(ctl
->F
, ctl
);
415 close_conn(conn_t
* conn
, int wait_plain
, const char *fmt
, ...)
418 char reason
[128]; /* must always be under 250 bytes */
425 conn_plain_process_recvq(conn
);
427 rb_rawbuf_flush(conn
->modbuf_out
, conn
->mod_fd
);
428 rb_linebuf_flush(conn
->plain_fd
, &conn
->plainbuf_out
);
429 rb_close(conn
->mod_fd
);
432 rb_dlinkDelete(&conn
->node
, connid_hash(conn
->id
));
434 if(!wait_plain
|| fmt
== NULL
)
436 rb_close(conn
->plain_fd
);
437 rb_dlinkAdd(conn
, &conn
->node
, &dead_list
);
441 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, conn_plain_read_shutdown_cb
, conn
);
442 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
445 vsnprintf(reason
, sizeof(reason
), fmt
, ap
);
449 uint32_to_buf(&buf
[1], conn
->id
);
450 rb_strlcpy((char *) &buf
[5], reason
, sizeof(buf
) - 5);
451 len
= (strlen(reason
) + 1) + 5;
452 mod_cmd_write_queue(conn
->ctl
, buf
, len
);
456 make_conn(mod_ctl_t
* ctl
, rb_fde_t
*mod_fd
, rb_fde_t
*plain_fd
)
458 conn_t
*conn
= rb_malloc(sizeof(conn_t
));
460 conn
->mod_fd
= mod_fd
;
461 conn
->plain_fd
= plain_fd
;
466 rb_linebuf_newbuf(&conn
->plainbuf_in
);
467 rb_linebuf_newbuf(&conn
->plainbuf_out
);
469 conn
->modbuf_in
= rb_new_rawbuffer();
470 conn
->modbuf_out
= rb_new_rawbuffer();
476 cleanup_bad_message(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
480 /* XXX should log this somehow */
481 for (i
= 0; i
< ctlb
->nfds
; i
++)
482 rb_close(ctlb
->F
[i
]);
486 ws_frame_unmask(char *msg
, int length
, uint8_t maskval
[WEBSOCKET_MASK_LENGTH
])
490 for (i
= 0; i
< length
; i
++)
491 msg
[i
] = msg
[i
] ^ maskval
[i
% 4];
495 conn_mod_process_frame(conn_t
*conn
, ws_frame_hdr_t
*hdr
, int masked
)
497 char msg
[WEBSOCKET_MAX_UNEXTENDED_PAYLOAD_DATA_LENGTH
];
498 uint8_t maskval
[WEBSOCKET_MASK_LENGTH
];
501 /* if we're masked, we get to collect the masking key for this frame */
504 dolen
= rb_rawbuf_get(conn
->modbuf_in
, maskval
, sizeof(maskval
));
507 close_conn(conn
, WAIT_PLAIN
, "websocket error: fault unpacking unmask key");
512 dolen
= rb_rawbuf_get(conn
->modbuf_in
, msg
, hdr
->payload_length_mask
);
515 close_conn(conn
, WAIT_PLAIN
, "websocket error: fault unpacking message");
520 ws_frame_unmask(msg
, dolen
, maskval
);
522 rb_linebuf_parse(&conn
->plainbuf_out
, msg
, dolen
, 1);
526 conn_mod_process_large(conn_t
*conn
, ws_frame_hdr_t
*hdr
, int masked
)
528 char msg
[READBUF_SIZE
];
530 uint8_t maskval
[WEBSOCKET_MASK_LENGTH
];
533 memset(msg
, 0, sizeof msg
);
535 dolen
= rb_rawbuf_get(conn
->modbuf_in
, &msglen
, sizeof(msglen
));
538 close_conn(conn
, WAIT_PLAIN
, "websocket error: fault unpacking message size");
542 msglen
= ntohs(msglen
);
546 dolen
= rb_rawbuf_get(conn
->modbuf_in
, maskval
, sizeof(maskval
));
549 close_conn(conn
, WAIT_PLAIN
, "websocket error: fault unpacking unmask key");
554 dolen
= rb_rawbuf_get(conn
->modbuf_in
, msg
, msglen
);
557 close_conn(conn
, WAIT_PLAIN
, "websocket error: fault unpacking message");
562 ws_frame_unmask(msg
, dolen
, maskval
);
564 rb_linebuf_parse(&conn
->plainbuf_out
, msg
, dolen
, 1);
568 conn_mod_process_huge(conn_t
*conn
, ws_frame_hdr_t
*hdr
, int masked
)
570 /* XXX implement me */
574 conn_mod_process(conn_t
*conn
)
581 int dolen
= rb_rawbuf_get(conn
->modbuf_in
, &hdr
, sizeof(hdr
));
582 if (dolen
!= sizeof(hdr
))
585 masked
= (hdr
.payload_length_mask
>> 7) == 1;
587 hdr
.payload_length_mask
&= 0x7f;
588 switch (hdr
.payload_length_mask
)
591 conn_mod_process_large(conn
, &hdr
, masked
);
594 conn_mod_process_huge(conn
, &hdr
, masked
);
597 conn_mod_process_frame(conn
, &hdr
, masked
);
602 conn_plain_write_sendq(conn
->plain_fd
, conn
);
606 conn_mod_handshake_process(conn_t
*conn
)
608 char inbuf
[READBUF_SIZE
];
610 memset(inbuf
, 0, sizeof inbuf
);
616 int dolen
= rb_rawbuf_get(conn
->modbuf_in
, inbuf
, sizeof inbuf
);
620 if ((p
= rb_strcasestr(inbuf
, "Sec-WebSocket-Key:")) != NULL
)
624 start
= p
+ strlen("Sec-WebSocket-Key:");
626 for (; start
< (inbuf
+ READBUF_SIZE
) && *start
; start
++)
628 if (*start
!= ' ' && *start
!= '\t')
632 for (end
= start
; end
< (inbuf
+ READBUF_SIZE
) && *end
; end
++)
634 if (*end
== '\r' || *end
== '\n')
641 rb_strlcpy(conn
->client_key
, start
, sizeof(conn
->client_key
));
649 uint8_t digest
[SHA1_DIGEST_LENGTH
];
653 sha1_update(&sha1
, (uint8_t *) conn
->client_key
, strlen(conn
->client_key
));
654 sha1_update(&sha1
, (uint8_t *) WEBSOCKET_SERVER_KEY
, strlen(WEBSOCKET_SERVER_KEY
));
655 sha1_final(&sha1
, digest
);
657 resp
= (char *) rb_base64_encode(digest
, SHA1_DIGEST_LENGTH
);
659 conn_mod_write(conn
, WEBSOCKET_ANSWER_STRING_1
, strlen(WEBSOCKET_ANSWER_STRING_1
));
660 conn_mod_write(conn
, resp
, strlen(resp
));
661 conn_mod_write(conn
, WEBSOCKET_ANSWER_STRING_2
, strlen(WEBSOCKET_ANSWER_STRING_2
));
666 conn_mod_write_sendq(conn
->mod_fd
, conn
);
670 conn_mod_read_cb(rb_fde_t
*fd
, void *data
)
672 char inbuf
[READBUF_SIZE
];
674 memset(inbuf
, 0, sizeof inbuf
);
689 length
= rb_read(fd
, inbuf
, sizeof(inbuf
));
693 if (rb_ignore_errno(errno
))
695 rb_setselect(fd
, RB_SELECT_READ
, conn_mod_read_cb
, conn
);
696 conn_plain_write_sendq(conn
->plain_fd
, conn
);
699 close_conn(conn
, NO_WAIT
, "Connection closed");
703 else if (length
== 0)
705 close_conn(conn
, NO_WAIT
, "Connection closed");
709 rb_rawbuf_append(conn
->modbuf_in
, inbuf
, length
);
711 conn_mod_handshake_process(conn
);
713 conn_mod_process(conn
);
715 if ((size_t) length
< sizeof(inbuf
))
717 rb_setselect(fd
, RB_SELECT_READ
, conn_mod_read_cb
, conn
);
724 plain_check_cork(conn_t
* conn
)
726 if(rb_rawbuf_length(conn
->modbuf_out
) >= 4096)
728 /* if we have over 4k pending outbound, don't read until
729 * we've cleared the queue */
731 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, NULL
, NULL
);
734 conn_mod_write_sendq(conn
->mod_fd
, conn
);
742 conn_plain_process_recvq(conn_t
*conn
)
744 char inbuf
[READBUF_SIZE
];
746 memset(inbuf
, 0, sizeof inbuf
);
750 int dolen
= rb_linebuf_get(&conn
->plainbuf_in
, inbuf
, sizeof inbuf
, LINEBUF_COMPLETE
, LINEBUF_PARSED
);
754 conn_mod_write_frame(conn
, inbuf
, dolen
);
758 conn_mod_write_sendq(conn
->mod_fd
, conn
);
762 conn_plain_read_cb(rb_fde_t
*fd
, void *data
)
764 char inbuf
[READBUF_SIZE
];
766 memset(inbuf
, 0, sizeof inbuf
);
776 if(plain_check_cork(conn
))
784 length
= rb_read(conn
->plain_fd
, inbuf
, sizeof(inbuf
));
786 if(length
== 0 || (length
< 0 && !rb_ignore_errno(errno
)))
788 close_conn(conn
, NO_WAIT
, NULL
);
794 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, conn_plain_read_cb
, conn
);
796 conn_plain_process_recvq(conn
);
799 conn
->plain_in
+= length
;
801 (void) rb_linebuf_parse(&conn
->plainbuf_in
, inbuf
, length
, 0);
805 if(plain_check_cork(conn
))
811 conn_plain_read_shutdown_cb(rb_fde_t
*fd
, void *data
)
813 char inbuf
[READBUF_SIZE
];
822 length
= rb_read(conn
->plain_fd
, inbuf
, sizeof(inbuf
));
824 if(length
== 0 || (length
< 0 && !rb_ignore_errno(errno
)))
826 rb_close(conn
->plain_fd
);
827 rb_dlinkAdd(conn
, &conn
->node
, &dead_list
);
833 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, conn_plain_read_shutdown_cb
, conn
);
840 wsock_process(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
845 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
847 id
= buf_to_uint32(&ctlb
->buf
[1]);
848 conn_add_id_hash(conn
, id
);
851 if(rb_get_type(conn
->mod_fd
) & RB_FD_UNKNOWN
)
852 rb_set_type(conn
->mod_fd
, RB_FD_SOCKET
);
854 if(rb_get_type(conn
->plain_fd
) == RB_FD_UNKNOWN
)
855 rb_set_type(conn
->plain_fd
, RB_FD_SOCKET
);
857 conn_mod_read_cb(conn
->mod_fd
, conn
);
858 conn_plain_read_cb(conn
->plain_fd
, conn
);
862 mod_process_cmd_recv(mod_ctl_t
* ctl
)
864 rb_dlink_node
*ptr
, *next
;
865 mod_ctl_buf_t
*ctl_buf
;
867 RB_DLINK_FOREACH_SAFE(ptr
, next
, ctl
->readq
.head
)
871 switch (*ctl_buf
->buf
)
875 if (ctl_buf
->nfds
!= 2 || ctl_buf
->buflen
!= 5)
877 cleanup_bad_message(ctl
, ctl_buf
);
880 wsock_process(ctl
, ctl_buf
);
885 /* Log unknown commands */
887 rb_dlinkDelete(ptr
, &ctl
->readq
);
888 rb_free(ctl_buf
->buf
);
895 mod_read_ctl(rb_fde_t
*F
, void *data
)
897 mod_ctl_buf_t
*ctl_buf
;
898 mod_ctl_t
*ctl
= data
;
904 ctl_buf
= rb_malloc(sizeof(mod_ctl_buf_t
));
905 ctl_buf
->buf
= rb_malloc(READBUF_SIZE
);
906 ctl_buf
->buflen
= READBUF_SIZE
;
907 retlen
= rb_recv_fd_buf(ctl
->F
, ctl_buf
->buf
, ctl_buf
->buflen
, ctl_buf
->F
,
911 rb_free(ctl_buf
->buf
);
916 ctl_buf
->buflen
= retlen
;
917 rb_dlinkAddTail(ctl_buf
, &ctl_buf
->node
, &ctl
->readq
);
918 for (i
= 0; i
< MAXPASSFD
&& ctl_buf
->F
[i
] != NULL
; i
++)
925 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
928 mod_process_cmd_recv(ctl
);
929 rb_setselect(ctl
->F
, RB_SELECT_READ
, mod_read_ctl
, ctl
);
933 read_pipe_ctl(rb_fde_t
*F
, void *data
)
935 char inbuf
[READBUF_SIZE
];
937 while((retlen
= rb_read(F
, inbuf
, sizeof(inbuf
))) > 0)
939 ;; /* we don't do anything with the pipe really, just care if the other process dies.. */
941 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
943 rb_setselect(F
, RB_SELECT_READ
, read_pipe_ctl
, NULL
);
947 main(int argc
, char **argv
)
949 const char *s_ctlfd
, *s_pipe
, *s_pid
;
950 int ctlfd
, pipefd
, x
, maxfd
;
953 s_ctlfd
= getenv("CTL_FD");
954 s_pipe
= getenv("CTL_PIPE");
955 s_pid
= getenv("CTL_PPID");
957 if(s_ctlfd
== NULL
|| s_pipe
== NULL
|| s_pid
== NULL
)
960 "This is the charybdis wsockd for internal ircd use.\n");
962 "You aren't supposed to run me directly. Exiting.\n");
966 ctlfd
= atoi(s_ctlfd
);
967 pipefd
= atoi(s_pipe
);
971 for(x
= 0; x
< maxfd
; x
++)
973 if(x
!= ctlfd
&& x
!= pipefd
&& x
> 2)
976 x
= open("/dev/null", O_RDWR
);
980 if(ctlfd
!= 0 && pipefd
!= 0)
982 if(ctlfd
!= 1 && pipefd
!= 1)
984 if(ctlfd
!= 2 && pipefd
!= 2)
991 rb_lib_init(NULL
, NULL
, NULL
, 0, maxfd
, 1024, 4096);
992 rb_linebuf_init(4096);
993 rb_init_rawbuffers(4096);
995 mod_ctl
= rb_malloc(sizeof(mod_ctl_t
));
996 mod_ctl
->F
= rb_open(ctlfd
, RB_FD_SOCKET
, "ircd control socket");
997 mod_ctl
->F_pipe
= rb_open(pipefd
, RB_FD_PIPE
, "ircd pipe");
998 rb_set_nb(mod_ctl
->F
);
999 rb_set_nb(mod_ctl
->F_pipe
);
1000 rb_event_addish("clean_dead_conns", clean_dead_conns
, NULL
, 10);
1001 read_pipe_ctl(mod_ctl
->F_pipe
, NULL
);
1002 mod_read_ctl(mod_ctl
->F
, mod_ctl
);