2 * ssld.c: The ircd-ratbox ssl/zlib helper daemon thingy
3 * Copyright (C) 2007 Aaron Sethman <androsyn@ratbox.org>
4 * Copyright (C) 2007 ircd-ratbox development team
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
33 #define READBUF_SIZE 16384
36 static void setup_signals(void);
40 buf_to_int32(char *buf
)
43 memcpy(&x
, buf
, sizeof(x
));
48 int32_to_buf(char *buf
, int32_t x
)
50 memcpy(buf
, &x
, sizeof(x
));
54 static inline uint16_t
55 buf_to_uint16(char *buf
)
58 memcpy(&x
, buf
, sizeof(x
));
63 uint16_to_buf(char *buf
, uint16_t x
)
65 memcpy(buf
, &x
, sizeof(x
));
70 static char inbuf
[READBUF_SIZE
];
72 static char outbuf
[READBUF_SIZE
];
75 typedef struct _mod_ctl_buf
80 rb_fde_t
*F
[MAXPASSFD
];
84 typedef struct _mod_ctl
94 static mod_ctl_t
*mod_ctl
;
98 typedef struct _zlib_stream
109 rawbuf_head_t
*modbuf_out
;
110 rawbuf_head_t
*plainbuf_out
;
116 unsigned long long mod_out
;
117 unsigned long long mod_in
;
118 unsigned long long plain_in
;
119 unsigned long long plain_out
;
124 #define FLAG_SSL 0x01
125 #define FLAG_ZIP 0x02
126 #define FLAG_CORK 0x04
127 #define FLAG_DEAD 0x08
128 #define FLAG_SSL_W_WANTS_R 0x10 /* output needs to wait until input possible */
129 #define FLAG_SSL_R_WANTS_W 0x20 /* input needs to wait until output possible */
130 #define FLAG_ZIPSSL 0x40
132 #define IsSSL(x) ((x)->flags & FLAG_SSL)
133 #define IsZip(x) ((x)->flags & FLAG_ZIP)
134 #define IsCork(x) ((x)->flags & FLAG_CORK)
135 #define IsDead(x) ((x)->flags & FLAG_DEAD)
136 #define IsSSLWWantsR(x) ((x)->flags & FLAG_SSL_W_WANTS_R)
137 #define IsSSLRWantsW(x) ((x)->flags & FLAG_SSL_R_WANTS_W)
138 #define IsZipSSL(x) ((x)->flags & FLAG_ZIPSSL)
140 #define SetSSL(x) ((x)->flags |= FLAG_SSL)
141 #define SetZip(x) ((x)->flags |= FLAG_ZIP)
142 #define SetCork(x) ((x)->flags |= FLAG_CORK)
143 #define SetDead(x) ((x)->flags |= FLAG_DEAD)
144 #define SetSSLWWantsR(x) ((x)->flags |= FLAG_SSL_W_WANTS_R)
145 #define SetSSLRWantsW(x) ((x)->flags |= FLAG_SSL_R_WANTS_W)
146 #define SetZipSSL(x) ((x)->flags |= FLAG_ZIPSSL)
148 #define ClearSSL(x) ((x)->flags &= ~FLAG_SSL)
149 #define ClearZip(x) ((x)->flags &= ~FLAG_ZIP)
150 #define ClearCork(x) ((x)->flags &= ~FLAG_CORK)
151 #define ClearDead(x) ((x)->flags &= ~FLAG_DEAD)
152 #define ClearSSLWWantsR(x) ((x)->flags &= ~FLAG_SSL_W_WANTS_R)
153 #define ClearSSLRWantsW(x) ((x)->flags &= ~FLAG_SSL_R_WANTS_W)
154 #define ClearZipSSL(x) ((x)->flags &= ~FLAG_ZIPSSL)
157 #define WAIT_PLAIN 0x1
159 #define HASH_WALK_SAFE(i, max, ptr, next, table) for(i = 0; i < max; i++) { RB_DLINK_FOREACH_SAFE(ptr, next, table[i].head)
160 #define HASH_WALK_END }
161 #define CONN_HASH_SIZE 2000
162 #define connid_hash(x) (&connid_hash_table[(x % CONN_HASH_SIZE)])
166 static rb_dlink_list connid_hash_table
[CONN_HASH_SIZE
];
167 static rb_dlink_list dead_list
;
169 static void conn_mod_read_cb(rb_fde_t
*fd
, void *data
);
170 static void conn_mod_write_sendq(rb_fde_t
*, void *data
);
171 static void conn_plain_write_sendq(rb_fde_t
*, void *data
);
172 static void mod_write_ctl(rb_fde_t
*, void *data
);
173 static void conn_plain_read_cb(rb_fde_t
*fd
, void *data
);
174 static void mod_cmd_write_queue(mod_ctl_t
* ctl
, const void *data
, size_t len
);
175 static const char *remote_closed
= "Remote host closed the connection";
178 static int zlib_ok
= 1;
180 static int zlib_ok
= 0;
186 ssld_alloc(void *unused
, size_t count
, size_t size
)
188 return rb_malloc(count
* size
);
192 ssld_free(void *unused
, void *ptr
)
199 conn_find_by_id(int32_t id
)
204 RB_DLINK_FOREACH(ptr
, (connid_hash(id
))->head
)
207 if(conn
->id
== id
&& !IsDead(conn
))
214 conn_add_id_hash(conn_t
* conn
, int32_t id
)
217 rb_dlinkAdd(conn
, &conn
->node
, connid_hash(id
));
221 free_conn(conn_t
* conn
)
223 rb_free_rawbuffer(conn
->modbuf_out
);
224 rb_free_rawbuffer(conn
->plainbuf_out
);
228 zlib_stream_t
*stream
= conn
->stream
;
229 inflateEnd(&stream
->instream
);
230 deflateEnd(&stream
->outstream
);
237 clean_dead_conns(void *unused
)
240 rb_dlink_node
*ptr
, *next
;
241 RB_DLINK_FOREACH_SAFE(ptr
, next
, dead_list
.head
)
246 dead_list
.tail
= dead_list
.head
= NULL
;
251 close_conn(conn_t
* conn
, int wait_plain
, const char *fmt
, ...)
254 char reason
[128]; /* must always be under 250 bytes */
260 rb_rawbuf_flush(conn
->modbuf_out
, conn
->mod_fd
);
261 rb_rawbuf_flush(conn
->plainbuf_out
, conn
->plain_fd
);
262 rb_close(conn
->mod_fd
);
265 if(!wait_plain
|| fmt
== NULL
)
267 rb_close(conn
->plain_fd
);
269 if(conn
->id
>= 0 && !IsZipSSL(conn
))
270 rb_dlinkDelete(&conn
->node
, connid_hash(conn
->id
));
271 rb_dlinkAdd(conn
, &conn
->node
, &dead_list
);
274 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
| RB_SELECT_READ
, NULL
, NULL
);
276 rb_vsnprintf(reason
, sizeof(reason
), fmt
, ap
);
280 int32_to_buf(&buf
[1], conn
->id
);
281 strcpy(&buf
[5], reason
);
282 len
= (strlen(reason
) + 1) + 5;
283 mod_cmd_write_queue(conn
->ctl
, buf
, len
);
287 make_conn(mod_ctl_t
* ctl
, rb_fde_t
*mod_fd
, rb_fde_t
*plain_fd
)
289 conn_t
*conn
= rb_malloc(sizeof(conn_t
));
291 conn
->modbuf_out
= rb_new_rawbuffer();
292 conn
->plainbuf_out
= rb_new_rawbuffer();
293 conn
->mod_fd
= mod_fd
;
294 conn
->plain_fd
= plain_fd
;
303 check_handshake_flood(void *unused
)
306 rb_dlink_node
*ptr
, *next
;
309 HASH_WALK_SAFE(i
, CONN_HASH_SIZE
, ptr
, next
, connid_hash_table
)
315 count
= rb_ssl_handshake_count(conn
->mod_fd
);
316 /* nothing needs to do this more than twice in ten seconds i don't think */
318 close_conn(conn
, WAIT_PLAIN
, "Handshake flooding");
320 rb_ssl_clear_handshake_count(conn
->mod_fd
);
325 conn_mod_write_sendq(rb_fde_t
*fd
, void *data
)
333 if(IsSSLWWantsR(conn
))
335 ClearSSLWWantsR(conn
);
336 conn_mod_read_cb(conn
->mod_fd
, conn
);
341 while((retlen
= rb_rawbuf_flush(conn
->modbuf_out
, fd
)) > 0)
342 conn
->mod_out
+= retlen
;
344 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
347 close_conn(conn
, WAIT_PLAIN
, "%s", remote_closed
);
348 if(IsSSL(conn
) && retlen
== RB_RW_SSL_ERROR
)
349 err
= rb_get_ssl_strerror(conn
->mod_fd
);
351 err
= strerror(errno
);
352 close_conn(conn
, WAIT_PLAIN
, "Write error: %s", err
);
355 if(rb_rawbuf_length(conn
->modbuf_out
) > 0)
357 if(retlen
!= RB_RW_SSL_NEED_READ
)
358 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, conn_mod_write_sendq
, conn
);
361 rb_setselect(conn
->mod_fd
, RB_SELECT_READ
, conn_mod_write_sendq
, conn
);
362 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
367 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
369 if(IsCork(conn
) && rb_rawbuf_length(conn
->modbuf_out
) == 0)
372 conn_plain_read_cb(conn
->plain_fd
, conn
);
378 conn_mod_write(conn_t
* conn
, void *data
, size_t len
)
380 if(IsDead(conn
)) /* no point in queueing to a dead man */
382 rb_rawbuf_append(conn
->modbuf_out
, data
, len
);
386 conn_plain_write(conn_t
* conn
, void *data
, size_t len
)
388 if(IsDead(conn
)) /* again no point in queueing to dead men */
390 rb_rawbuf_append(conn
->plainbuf_out
, data
, len
);
394 mod_cmd_write_queue(mod_ctl_t
* ctl
, const void *data
, size_t len
)
396 mod_ctl_buf_t
*ctl_buf
;
397 ctl_buf
= rb_malloc(sizeof(mod_ctl_buf_t
));
398 ctl_buf
->buf
= rb_malloc(len
);
399 ctl_buf
->buflen
= len
;
400 memcpy(ctl_buf
->buf
, data
, len
);
402 rb_dlinkAddTail(ctl_buf
, &ctl_buf
->node
, &ctl
->writeq
);
403 mod_write_ctl(ctl
->F
, ctl
);
408 common_zlib_deflate(conn_t
* conn
, void *buf
, size_t len
)
411 z_stream
*outstream
= &((zlib_stream_t
*) conn
->stream
)->outstream
;
412 outstream
->next_in
= buf
;
413 outstream
->avail_in
= len
;
414 outstream
->next_out
= (Bytef
*) outbuf
;
415 outstream
->avail_out
= sizeof(outbuf
);
417 ret
= deflate(outstream
, Z_SYNC_FLUSH
);
421 close_conn(conn
, WAIT_PLAIN
, "Deflate failed: %s", zError(ret
));
424 if(outstream
->avail_out
== 0)
426 /* avail_out empty */
427 close_conn(conn
, WAIT_PLAIN
, "error compressing data, avail_out == 0");
430 if(outstream
->avail_in
!= 0)
432 /* avail_in isn't empty... */
433 close_conn(conn
, WAIT_PLAIN
, "error compressing data, avail_in != 0");
436 have
= sizeof(outbuf
) - outstream
->avail_out
;
437 conn_mod_write(conn
, outbuf
, have
);
441 common_zlib_inflate(conn_t
* conn
, void *buf
, size_t len
)
444 ((zlib_stream_t
*) conn
->stream
)->instream
.next_in
= buf
;
445 ((zlib_stream_t
*) conn
->stream
)->instream
.avail_in
= len
;
446 ((zlib_stream_t
*) conn
->stream
)->instream
.next_out
= (Bytef
*) outbuf
;
447 ((zlib_stream_t
*) conn
->stream
)->instream
.avail_out
= sizeof(outbuf
);
449 while(((zlib_stream_t
*) conn
->stream
)->instream
.avail_in
)
451 ret
= inflate(&((zlib_stream_t
*) conn
->stream
)->instream
, Z_NO_FLUSH
);
454 if(!strncmp("ERROR ", buf
, 6))
456 close_conn(conn
, WAIT_PLAIN
, "Received uncompressed ERROR");
459 close_conn(conn
, WAIT_PLAIN
, "Inflate failed: %s", zError(ret
));
462 have
= sizeof(outbuf
) - ((zlib_stream_t
*) conn
->stream
)->instream
.avail_out
;
464 if(((zlib_stream_t
*) conn
->stream
)->instream
.avail_in
)
466 conn_plain_write(conn
, outbuf
, have
);
468 ((zlib_stream_t
*) conn
->stream
)->instream
.next_out
= (Bytef
*) outbuf
;
469 ((zlib_stream_t
*) conn
->stream
)->instream
.avail_out
= sizeof(outbuf
);
475 conn_plain_write(conn
, outbuf
, have
);
480 plain_check_cork(conn_t
* conn
)
482 if(rb_rawbuf_length(conn
->modbuf_out
) >= 4096)
484 /* if we have over 4k pending outbound, don't read until
485 * we've cleared the queue */
487 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, NULL
, NULL
);
489 conn_mod_write_sendq(conn
->mod_fd
, conn
);
497 conn_plain_read_cb(rb_fde_t
*fd
, void *data
)
507 if(plain_check_cork(conn
))
515 length
= rb_read(conn
->plain_fd
, inbuf
, sizeof(inbuf
));
517 if(length
== 0 || (length
< 0 && !rb_ignore_errno(errno
)))
519 close_conn(conn
, NO_WAIT
, NULL
);
525 rb_setselect(conn
->plain_fd
, RB_SELECT_READ
, conn_plain_read_cb
, conn
);
526 conn_mod_write_sendq(conn
->mod_fd
, conn
);
529 conn
->plain_in
+= length
;
533 common_zlib_deflate(conn
, inbuf
, length
);
536 conn_mod_write(conn
, inbuf
, length
);
539 if(plain_check_cork(conn
))
545 conn_mod_read_cb(rb_fde_t
*fd
, void *data
)
548 const char *err
= remote_closed
;
555 if(IsSSLRWantsW(conn
))
557 ClearSSLRWantsW(conn
);
558 conn_mod_write_sendq(conn
->mod_fd
, conn
);
568 length
= rb_read(conn
->mod_fd
, inbuf
, sizeof(inbuf
));
570 if(length
== 0 || (length
< 0 && !rb_ignore_errno(errno
)))
574 close_conn(conn
, WAIT_PLAIN
, "%s", remote_closed
);
578 if(IsSSL(conn
) && length
== RB_RW_SSL_ERROR
)
579 err
= rb_get_ssl_strerror(conn
->mod_fd
);
581 err
= strerror(errno
);
582 close_conn(conn
, WAIT_PLAIN
, "Read error: %s", err
);
587 if(length
!= RB_RW_SSL_NEED_WRITE
)
588 rb_setselect(conn
->mod_fd
, RB_SELECT_READ
, conn_mod_read_cb
, conn
);
591 rb_setselect(conn
->mod_fd
, RB_SELECT_READ
, NULL
, NULL
);
592 rb_setselect(conn
->mod_fd
, RB_SELECT_WRITE
, conn_mod_read_cb
, conn
);
595 conn_plain_write_sendq(conn
->plain_fd
, conn
);
598 conn
->mod_in
+= length
;
601 common_zlib_inflate(conn
, inbuf
, length
);
604 conn_plain_write(conn
, inbuf
, length
);
609 conn_plain_write_sendq(rb_fde_t
*fd
, void *data
)
617 while((retlen
= rb_rawbuf_flush(conn
->plainbuf_out
, fd
)) > 0)
619 conn
->plain_out
+= retlen
;
621 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
623 close_conn(data
, NO_WAIT
, NULL
);
628 if(rb_rawbuf_length(conn
->plainbuf_out
) > 0)
629 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
, conn_plain_write_sendq
, conn
);
631 rb_setselect(conn
->plain_fd
, RB_SELECT_WRITE
, NULL
, NULL
);
637 #if defined(RLIMIT_NOFILE) && defined(HAVE_SYS_RESOURCE_H)
640 if(!getrlimit(RLIMIT_NOFILE
, &limit
))
642 return limit
.rlim_cur
;
644 #endif /* RLIMIT_FD_MAX */
645 return MAXCONNECTIONS
;
649 ssl_process_accept_cb(rb_fde_t
*F
, int status
, struct sockaddr
*addr
, rb_socklen_t len
, void *data
)
654 conn_mod_read_cb(conn
->mod_fd
, conn
);
655 conn_plain_read_cb(conn
->plain_fd
, conn
);
658 /* ircd doesn't care about the reason for this */
659 close_conn(conn
, NO_WAIT
, 0);
664 ssl_process_connect_cb(rb_fde_t
*F
, int status
, void *data
)
669 conn_mod_read_cb(conn
->mod_fd
, conn
);
670 conn_plain_read_cb(conn
->plain_fd
, conn
);
672 else if(status
== RB_ERR_TIMEOUT
)
673 close_conn(conn
, WAIT_PLAIN
, "SSL handshake timed out");
674 else if(status
== RB_ERROR_SSL
)
675 close_conn(conn
, WAIT_PLAIN
, "%s", rb_get_ssl_strerror(conn
->mod_fd
));
677 close_conn(conn
, WAIT_PLAIN
, "SSL handshake failed");
682 ssl_process_accept(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
687 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
689 id
= buf_to_int32(&ctlb
->buf
[1]);
692 conn_add_id_hash(conn
, id
);
695 if(rb_get_type(conn
->mod_fd
) & RB_FD_UNKNOWN
)
698 rb_set_type(conn
->mod_fd
, RB_FD_SOCKET
);
700 if(rb_get_type(conn
->mod_fd
) == RB_FD_UNKNOWN
)
701 rb_set_type(conn
->plain_fd
, RB_FD_SOCKET
);
703 rb_ssl_start_accepted(ctlb
->F
[0], ssl_process_accept_cb
, conn
, 10);
707 ssl_process_connect(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
711 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
713 id
= buf_to_int32(&ctlb
->buf
[1]);
716 conn_add_id_hash(conn
, id
);
719 if(rb_get_type(conn
->mod_fd
) == RB_FD_UNKNOWN
)
720 rb_set_type(conn
->mod_fd
, RB_FD_SOCKET
);
722 if(rb_get_type(conn
->mod_fd
) == RB_FD_UNKNOWN
)
723 rb_set_type(conn
->plain_fd
, RB_FD_SOCKET
);
726 rb_ssl_start_connected(ctlb
->F
[0], ssl_process_connect_cb
, conn
, 10);
730 process_stats(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
737 id
= buf_to_int32(&ctlb
->buf
[1]);
742 odata
= &ctlb
->buf
[5];
743 conn
= conn_find_by_id(id
);
748 rb_snprintf(outstat
, sizeof(outstat
), "S %s %llu %llu %llu %llu", odata
,
749 conn
->plain_out
, conn
->mod_in
, conn
->plain_in
, conn
->mod_out
);
754 mod_cmd_write_queue(ctl
, outstat
, strlen(outstat
) + 1); /* +1 is so we send the \0 as well */
758 change_connid(mod_ctl_t
*ctl
, mod_ctl_buf_t
*ctlb
)
760 int32_t id
= buf_to_int32(&ctlb
->buf
[1]);
761 int32_t newid
= buf_to_int32(&ctlb
->buf
[5]);
762 conn_t
*conn
= conn_find_by_id(id
);
764 rb_dlinkDelete(&conn
->node
, connid_hash(conn
->id
));
771 zlib_process(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
775 size_t hdr
= (sizeof(uint8_t) * 2) + sizeof(int32_t);
777 z_stream
*instream
, *outstream
;
781 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
782 if(rb_get_type(conn
->mod_fd
) == RB_FD_UNKNOWN
)
783 rb_set_type(conn
->mod_fd
, RB_FD_SOCKET
);
785 if(rb_get_type(conn
->plain_fd
) == RB_FD_UNKNOWN
)
786 rb_set_type(conn
->plain_fd
, RB_FD_SOCKET
);
788 id
= buf_to_int32(&ctlb
->buf
[1]);
789 conn_add_id_hash(conn
, id
);
791 level
= (uint8_t)ctlb
->buf
[5];
793 recvqlen
= ctlb
->buflen
- hdr
;
794 recvq_start
= &ctlb
->buf
[6];
797 conn
->stream
= rb_malloc(sizeof(zlib_stream_t
));
798 instream
= &((zlib_stream_t
*) conn
->stream
)->instream
;
799 outstream
= &((zlib_stream_t
*) conn
->stream
)->outstream
;
801 instream
->total_in
= 0;
802 instream
->total_out
= 0;
803 instream
->zalloc
= (alloc_func
) ssld_alloc
;
804 instream
->zfree
= (free_func
) ssld_free
;
805 instream
->data_type
= Z_ASCII
;
806 inflateInit(&((zlib_stream_t
*) conn
->stream
)->instream
);
808 outstream
->total_in
= 0;
809 outstream
->total_out
= 0;
810 outstream
->zalloc
= (alloc_func
) ssld_alloc
;
811 outstream
->zfree
= (free_func
) ssld_free
;
812 outstream
->data_type
= Z_ASCII
;
815 level
= Z_DEFAULT_COMPRESSION
;
817 deflateInit(&((zlib_stream_t
*) conn
->stream
)->outstream
, level
);
819 common_zlib_inflate(conn
, recvq_start
, recvqlen
);
821 conn_mod_read_cb(conn
->mod_fd
, conn
);
822 conn_plain_read_cb(conn
->plain_fd
, conn
);
829 init_prng(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctl_buf
)
832 prng_seed_t seed_type
;
834 seed_type
= (prng_seed_t
) ctl_buf
->buf
[1];
835 path
= &ctl_buf
->buf
[2];
836 rb_init_prng(path
, seed_type
);
841 ssl_new_keys(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctl_buf
)
844 char *cert
, *key
, *dhparam
;
846 buf
= &ctl_buf
->buf
[2];
848 buf
+= strlen(cert
) + 1;
850 buf
+= strlen(key
) + 1;
852 if(strlen(dhparam
) == 0)
855 if(!rb_setup_ssl_server(cert
, key
, dhparam
))
857 const char *invalid
= "I";
858 mod_cmd_write_queue(ctl
, invalid
, strlen(invalid
));
864 send_nossl_support(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
866 static const char *nossl_cmd
= "N";
872 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
873 id
= buf_to_int32(&ctlb
->buf
[1]);
876 conn_add_id_hash(conn
, id
);
877 close_conn(conn
, WAIT_PLAIN
, "libratbox reports no SSL/TLS support");
879 mod_cmd_write_queue(ctl
, nossl_cmd
, strlen(nossl_cmd
));
883 send_i_am_useless(mod_ctl_t
* ctl
)
885 static const char *useless
= "U";
886 mod_cmd_write_queue(ctl
, useless
, strlen(useless
));
890 send_nozlib_support(mod_ctl_t
* ctl
, mod_ctl_buf_t
* ctlb
)
892 static const char *nozlib_cmd
= "z";
897 conn
= make_conn(ctl
, ctlb
->F
[0], ctlb
->F
[1]);
898 id
= buf_to_int32(&ctlb
->buf
[1]);
901 conn_add_id_hash(conn
, id
);
902 close_conn(conn
, WAIT_PLAIN
, "libratbox reports no zlib support");
904 mod_cmd_write_queue(ctl
, nozlib_cmd
, strlen(nozlib_cmd
));
908 mod_process_cmd_recv(mod_ctl_t
* ctl
)
910 rb_dlink_node
*ptr
, *next
;
911 mod_ctl_buf_t
*ctl_buf
;
913 RB_DLINK_FOREACH_SAFE(ptr
, next
, ctl
->readq
.head
)
917 switch (*ctl_buf
->buf
)
923 send_nossl_support(ctl
, ctl_buf
);
926 ssl_process_accept(ctl
, ctl_buf
);
933 send_nossl_support(ctl
, ctl_buf
);
936 ssl_process_connect(ctl
, ctl_buf
);
944 send_nossl_support(ctl
, ctl_buf
);
947 ssl_new_keys(ctl
, ctl_buf
);
951 init_prng(ctl
, ctl_buf
);
955 process_stats(ctl
, ctl_buf
);
960 change_connid(ctl
, ctl_buf
);
968 zlib_process(ctl
, ctl_buf
);
974 send_nozlib_support(ctl
, ctl_buf
);
980 /* Log unknown commands */
982 rb_dlinkDelete(ptr
, &ctl
->readq
);
983 rb_free(ctl_buf
->buf
);
992 mod_read_ctl(rb_fde_t
*F
, void *data
)
994 mod_ctl_buf_t
*ctl_buf
;
995 mod_ctl_t
*ctl
= data
;
1000 ctl_buf
= rb_malloc(sizeof(mod_ctl_buf_t
));
1001 ctl_buf
->buf
= rb_malloc(READBUF_SIZE
);
1002 ctl_buf
->buflen
= READBUF_SIZE
;
1003 retlen
= rb_recv_fd_buf(ctl
->F
, ctl_buf
->buf
, ctl_buf
->buflen
, ctl_buf
->F
,
1007 rb_free(ctl_buf
->buf
);
1012 ctl_buf
->buflen
= retlen
;
1013 rb_dlinkAddTail(ctl_buf
, &ctl_buf
->node
, &ctl
->readq
);
1018 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
1021 mod_process_cmd_recv(ctl
);
1022 rb_setselect(ctl
->F
, RB_SELECT_READ
, mod_read_ctl
, ctl
);
1026 mod_write_ctl(rb_fde_t
*F
, void *data
)
1028 mod_ctl_t
*ctl
= data
;
1029 mod_ctl_buf_t
*ctl_buf
;
1030 rb_dlink_node
*ptr
, *next
;
1033 RB_DLINK_FOREACH_SAFE(ptr
, next
, ctl
->writeq
.head
)
1035 ctl_buf
= ptr
->data
;
1036 retlen
= rb_send_fd_buf(ctl
->F
, ctl_buf
->F
, ctl_buf
->nfds
, ctl_buf
->buf
,
1037 ctl_buf
->buflen
, ppid
);
1040 rb_dlinkDelete(ptr
, &ctl
->writeq
);
1041 for(x
= 0; x
< ctl_buf
->nfds
; x
++)
1042 rb_close(ctl_buf
->F
[x
]);
1043 rb_free(ctl_buf
->buf
);
1047 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
1051 if(rb_dlink_list_length(&ctl
->writeq
) > 0)
1052 rb_setselect(ctl
->F
, RB_SELECT_WRITE
, mod_write_ctl
, ctl
);
1057 read_pipe_ctl(rb_fde_t
*F
, void *data
)
1060 while((retlen
= rb_read(F
, inbuf
, sizeof(inbuf
))) > 0)
1062 ;; /* we don't do anything with the pipe really, just care if the other process dies.. */
1064 if(retlen
== 0 || (retlen
< 0 && !rb_ignore_errno(errno
)))
1066 rb_setselect(F
, RB_SELECT_READ
, read_pipe_ctl
, NULL
);
1071 main(int argc
, char **argv
)
1073 const char *s_ctlfd
, *s_pipe
, *s_pid
;
1074 int ctlfd
, pipefd
, x
, maxfd
;
1077 s_ctlfd
= getenv("CTL_FD");
1078 s_pipe
= getenv("CTL_PIPE");
1079 s_pid
= getenv("CTL_PPID");
1081 if(s_ctlfd
== NULL
|| s_pipe
== NULL
|| s_pid
== NULL
)
1084 "This is ircd-ratbox ssld. You know you aren't supposed to run me directly?\n");
1086 "You get an Id tag for this: $Id$\n");
1087 fprintf(stderr
, "Have a nice life\n");
1091 ctlfd
= atoi(s_ctlfd
);
1092 pipefd
= atoi(s_pipe
);
1096 for(x
= 0; x
< maxfd
; x
++)
1098 if(x
!= ctlfd
&& x
!= pipefd
&& x
> 2)
1101 x
= open("/dev/null", O_RDWR
);
1105 if(ctlfd
!= 0 && pipefd
!= 0)
1107 if(ctlfd
!= 1 && pipefd
!= 1)
1109 if(ctlfd
!= 2 && pipefd
!= 2)
1116 rb_lib_init(NULL
, NULL
, NULL
, 0, maxfd
, 1024, 4096);
1117 rb_init_rawbuffers(1024);
1118 ssl_ok
= rb_supports_ssl();
1119 mod_ctl
= rb_malloc(sizeof(mod_ctl_t
));
1120 mod_ctl
->F
= rb_open(ctlfd
, RB_FD_SOCKET
, "ircd control socket");
1121 mod_ctl
->F_pipe
= rb_open(pipefd
, RB_FD_PIPE
, "ircd pipe");
1122 rb_set_nb(mod_ctl
->F
);
1123 rb_set_nb(mod_ctl
->F_pipe
);
1124 rb_event_addish("clean_dead_conns", clean_dead_conns
, NULL
, 10);
1125 rb_event_add("check_handshake_flood", check_handshake_flood
, NULL
, 10);
1126 read_pipe_ctl(mod_ctl
->F_pipe
, NULL
);
1127 mod_read_ctl(mod_ctl
->F
, mod_ctl
);
1128 if(!zlib_ok
&& !ssl_ok
)
1130 /* this is really useless... */
1131 send_i_am_useless(mod_ctl
);
1132 /* sleep until the ircd kills us */
1133 rb_sleep(2 << 30, 0);
1138 send_nozlib_support(mod_ctl
, NULL
);
1140 send_nossl_support(mod_ctl
, NULL
);
1148 dummy_handler(int sig
)
1158 struct sigaction act
;
1161 act
.sa_handler
= SIG_IGN
;
1162 sigemptyset(&act
.sa_mask
);
1163 sigaddset(&act
.sa_mask
, SIGPIPE
);
1164 sigaddset(&act
.sa_mask
, SIGALRM
);
1166 sigaddset(&act
.sa_mask
, SIGTRAP
);
1170 sigaddset(&act
.sa_mask
, SIGWINCH
);
1171 sigaction(SIGWINCH
, &act
, 0);
1173 sigaction(SIGPIPE
, &act
, 0);
1175 sigaction(SIGTRAP
, &act
, 0);
1178 act
.sa_handler
= dummy_handler
;
1179 sigaction(SIGALRM
, &act
, 0);