1 /* Copyright 2001,2002,2003 Roger Dingledine, Matej Pfajfar. */
2 /* See LICENSE for licensing information */
28 #include "../common/torint.h"
29 #ifdef HAVE_SYS_POLL_H
34 #include "../common/fakepoll.h"
36 #ifdef HAVE_SYS_TYPES_H
37 #include <sys/types.h> /* Must be included before sys/stat.h for Ultrix */
39 #ifdef HAVE_SYS_WAIT_H
42 #ifdef HAVE_SYS_FCNTL_H
43 #include <sys/fcntl.h>
48 #ifdef HAVE_SYS_IOCTL_H
49 #include <sys/ioctl.h>
51 #ifdef HAVE_SYS_SOCKET_H
52 #include <sys/socket.h>
54 #ifdef HAVE_SYS_TIME_H
57 #ifdef HAVE_SYS_STAT_H
60 #ifdef HAVE_NETINET_IN_H
61 #include <netinet/in.h>
63 #ifdef HAVE_ARPA_INET_H
64 #include <arpa/inet.h>
81 #elif defined(_MSC_VER)
88 #define WIN32_LEAN_AND_MEAN
90 #define snprintf _snprintf
93 #include "../common/crypto.h"
94 #include "../common/tortls.h"
95 #include "../common/log.h"
96 #include "../common/util.h"
98 #define RECOMMENDED_SOFTWARE_VERSIONS "0.0.2pre8,0.0.2pre9,0.0.2pre10,0.0.2pre11,0.0.2pre12,0.0.2pre13"
100 #define MAXCONNECTIONS 1000 /* upper bound on max connections.
101 can be lowered by config file */
103 #define MAX_BUF_SIZE (640*1024)
104 #define DEFAULT_BANDWIDTH_OP (1024 * 1000)
105 #define MAX_NICKNAME_LEN 32
106 #define MAX_DIR_SIZE 50000 /* XXX, big enough? */
108 #define ACI_TYPE_LOWER 0
109 #define ACI_TYPE_HIGHER 1
110 #define ACI_TYPE_BOTH 2
112 #define _CONN_TYPE_MIN 3
113 #define CONN_TYPE_OR_LISTENER 3
114 #define CONN_TYPE_OR 4
115 #define CONN_TYPE_EXIT 5
116 #define CONN_TYPE_AP_LISTENER 6
117 #define CONN_TYPE_AP 7
118 #define CONN_TYPE_DIR_LISTENER 8
119 #define CONN_TYPE_DIR 9
120 #define CONN_TYPE_DNSWORKER 10
121 #define CONN_TYPE_CPUWORKER 11
122 #define _CONN_TYPE_MAX 11
124 #define LISTENER_STATE_READY 0
126 #define _DNSWORKER_STATE_MIN 1
127 #define DNSWORKER_STATE_IDLE 1
128 #define DNSWORKER_STATE_BUSY 2
129 #define _DNSWORKER_STATE_MAX 2
131 #define _CPUWORKER_STATE_MIN 1
132 #define CPUWORKER_STATE_IDLE 1
133 #define CPUWORKER_STATE_BUSY_ONION 2
134 #define CPUWORKER_STATE_BUSY_HANDSHAKE 3
135 #define _CPUWORKER_STATE_MAX 3
137 #define CPUWORKER_TASK_ONION CPUWORKER_STATE_BUSY_ONION
139 #define _OR_CONN_STATE_MIN 1
140 #define OR_CONN_STATE_CONNECTING 1 /* waiting for connect() to finish */
141 #define OR_CONN_STATE_HANDSHAKING 2 /* SSL is handshaking, not done yet */
142 #define OR_CONN_STATE_OPEN 3 /* ready to send/receive cells. */
143 #define _OR_CONN_STATE_MAX 3
145 #define _EXIT_CONN_STATE_MIN 1
146 #define EXIT_CONN_STATE_RESOLVING 1 /* waiting for response from dns farm */
147 #define EXIT_CONN_STATE_CONNECTING 2 /* waiting for connect() to finish */
148 #define EXIT_CONN_STATE_OPEN 3
149 #define _EXIT_CONN_STATE_MAX 3
151 #define EXIT_CONN_STATE_CLOSE 3 /* flushing the buffer, then will close */
152 #define EXIT_CONN_STATE_CLOSE_WAIT 4 /* have sent a destroy, awaiting a confirmation */
155 /* the AP state values must be disjoint from the EXIT state values */
156 #define _AP_CONN_STATE_MIN 4
157 #define AP_CONN_STATE_SOCKS_WAIT 4
158 #define AP_CONN_STATE_OR_WAIT 5
159 #define AP_CONN_STATE_OPEN 6
160 #define _AP_CONN_STATE_MAX 6
162 #define _DIR_CONN_STATE_MIN 1
163 #define DIR_CONN_STATE_CONNECTING_FETCH 1
164 #define DIR_CONN_STATE_CONNECTING_UPLOAD 2
165 #define DIR_CONN_STATE_CLIENT_SENDING_FETCH 3
166 #define DIR_CONN_STATE_CLIENT_SENDING_UPLOAD 4
167 #define DIR_CONN_STATE_CLIENT_READING_FETCH 5
168 #define DIR_CONN_STATE_CLIENT_READING_UPLOAD 6
169 #define DIR_CONN_STATE_SERVER_COMMAND_WAIT 7
170 #define DIR_CONN_STATE_SERVER_WRITING 8
171 #define _DIR_CONN_STATE_MAX 8
173 #define CIRCUIT_STATE_BUILDING 0 /* I'm the OP, still haven't done all my handshakes */
174 #define CIRCUIT_STATE_ONIONSKIN_PENDING 1 /* waiting to process the onionskin */
175 #define CIRCUIT_STATE_OR_WAIT 2 /* I'm the OP, my firsthop is still connecting */
176 #define CIRCUIT_STATE_OPEN 3 /* onionskin(s) processed, ready to send/receive cells */
178 #define RELAY_COMMAND_BEGIN 1
179 #define RELAY_COMMAND_DATA 2
180 #define RELAY_COMMAND_END 3
181 #define RELAY_COMMAND_CONNECTED 4
182 #define RELAY_COMMAND_SENDME 5
183 #define RELAY_COMMAND_EXTEND 6
184 #define RELAY_COMMAND_EXTENDED 7
185 #define RELAY_COMMAND_TRUNCATE 8
186 #define RELAY_COMMAND_TRUNCATED 9
188 #define RELAY_HEADER_SIZE 8
190 /* default cipher function */
191 #define DEFAULT_CIPHER CRYPTO_CIPHER_AES_CTR
192 /* Used to en/decrypt onion skins */
193 #define ONION_CIPHER DEFAULT_CIPHER
194 /* Used to en/decrypt RELAY cells */
195 #define CIRCUIT_CIPHER DEFAULT_CIPHER
197 #define CELL_DIRECTION_IN 1
198 #define CELL_DIRECTION_OUT 2
199 #define EDGE_EXIT CONN_TYPE_EXIT
200 #define EDGE_AP CONN_TYPE_AP
201 #define CELL_DIRECTION(x) ((x) == EDGE_EXIT ? CELL_DIRECTION_IN : CELL_DIRECTION_OUT)
203 #define CIRCWINDOW_START 1000
204 #define CIRCWINDOW_INCREMENT 100
206 #define STREAMWINDOW_START 500
207 #define STREAMWINDOW_INCREMENT 50
210 #define CELL_PADDING 0
211 #define CELL_CREATE 1
212 #define CELL_CREATED 2
214 #define CELL_DESTROY 4
216 #define CELL_PAYLOAD_SIZE 248
217 #define CELL_NETWORK_SIZE 256
219 /* legal characters in a filename */
220 #define CONFIG_LEGAL_FILENAME_CHARACTERS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_/"
221 /* legal characters in a nickname */
222 #define LEGAL_NICKNAME_CHARACTERS "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
224 /* structure of a socks client operation */
226 unsigned char version
; /* socks version number */
227 unsigned char command
; /* command code */
228 uint16_t destport
; /* destination port, host order */
229 uint32_t destip
; /* destination address, host order */
230 /* userid follows, terminated by a \0 */
231 /* dest host follows, terminated by a \0 */
234 #define SOCKS4_NETWORK_LEN 8
236 typedef uint16_t aci_t
;
238 /* cell definition */
240 aci_t aci
; /* Anonymous Connection Identifier */
241 unsigned char command
;
242 unsigned char length
; /* of payload if relay cell */
243 uint32_t seq
; /* sequence number */
245 unsigned char payload
[CELL_PAYLOAD_SIZE
];
247 #define CELL_RELAY_COMMAND(c) (*(uint8_t*)((c).payload))
248 #define SET_CELL_RELAY_COMMAND(c,cmd) (*(uint8_t*)((c).payload) = (cmd))
249 #define STREAM_ID_SIZE 7
250 #define SET_CELL_STREAM_ID(c,id) memcpy((c).payload+1,(id),STREAM_ID_SIZE)
252 #define ZERO_STREAM "\0\0\0\0\0\0\0\0"
254 typedef struct buf_t buf_t
;
256 struct connection_t
{
260 uint8_t wants_to_read
; /* should we start reading again once
261 * the bandwidth throttler allows it?
263 uint8_t wants_to_write
; /* should we start writing again once
264 * the bandwidth throttler allows reads?
266 int s
; /* our socket */
267 int poll_index
; /* index of this conn into the poll_array */
268 int marked_for_close
; /* should we close this conn on the next
269 * iteration of the main loop?
273 int inbuf_reached_eof
; /* did read() return 0 on this conn? */
274 long timestamp_lastread
; /* when was the last time poll() said we could read? */
277 int outbuf_flushlen
; /* how much data should we try to flush from the outbuf? */
278 long timestamp_lastwritten
; /* when was the last time poll() said we could write? */
280 long timestamp_created
; /* when was this connection_t created? */
282 uint32_t addr
; /* these two uniquely identify a router. Both in host order. */
283 uint16_t port
; /* if non-zero, they identify the guy on the other end
284 * of the connection. */
285 char *address
; /* FQDN (or IP) of the guy on the other end.
286 * strdup into this, because free_connection frees it
288 crypto_pk_env_t
*onion_pkey
; /* public RSA key for the other side's onions */
289 crypto_pk_env_t
*link_pkey
; /* public RSA key for the other side's TLS */
290 crypto_pk_env_t
*identity_pkey
; /* public RSA key for the other side's signing */
293 /* Used only by OR connections: */
295 uint16_t next_aci
; /* Which ACI do we try to use next on this connection?
296 * This is always in the range 0..1<<15-1.*/
298 /* bandwidth and receiver_bucket only used by ORs in OPEN state: */
299 uint32_t bandwidth
; /* connection bandwidth. */
300 int receiver_bucket
; /* when this hits 0, stop receiving. Every second we
301 * add 'bandwidth' to this, capping it at 10*bandwidth.
304 /* Used only by edge connections: */
306 char stream_id
[STREAM_ID_SIZE
];
307 struct connection_t
*next_stream
; /* points to the next stream at this edge, if any */
308 struct crypt_path_t
*cpath_layer
; /* a pointer to which node in the circ this conn exits at */
309 int package_window
; /* how many more relay cells can i send into the circuit? */
310 int deliver_window
; /* how many more relay cells can end at me? */
312 int done_sending
; /* for half-open connections; not used currently */
316 typedef struct connection_t connection_t
;
318 #define EXIT_POLICY_ACCEPT 1
319 #define EXIT_POLICY_REJECT 2
321 struct exit_policy_t
{
327 struct exit_policy_t
*next
;
330 /* config stuff we know about the other ORs in the network */
335 uint32_t addr
; /* all host order */
342 crypto_pk_env_t
*onion_pkey
; /* public RSA key for onions */
343 crypto_pk_env_t
*link_pkey
; /* public RSA key for TLS */
344 crypto_pk_env_t
*identity_pkey
; /* public RSA key for signing */
350 struct exit_policy_t
*exit_policy
;
353 #define MAX_ROUTERS_IN_DIR 1024
355 routerinfo_t
**routers
;
357 char *software_versions
;
361 struct crypt_path_t
{
363 /* crypto environments */
364 crypto_cipher_env_t
*f_crypto
;
365 crypto_cipher_env_t
*b_crypto
;
367 crypto_dh_env_t
*handshake_state
;
373 #define CPATH_STATE_CLOSED 0
374 #define CPATH_STATE_AWAITING_KEYS 1
375 #define CPATH_STATE_OPEN 2
376 struct crypt_path_t
*next
;
377 struct crypt_path_t
*prev
; /* doubly linked list */
383 #define DH_KEY_LEN CRYPTO_DH_SIZE
384 #define DH_ONIONSKIN_LEN DH_KEY_LEN+16
386 typedef struct crypt_path_t crypt_path_t
;
388 /* struct for a path (circuit) through the network */
392 connection_t
*p_conn
;
393 connection_t
*n_conn
; /* for the OR conn, if there is one */
394 connection_t
*p_streams
;
395 connection_t
*n_streams
;
399 aci_t p_aci
; /* circuit identifiers */
402 crypto_cipher_env_t
*p_crypto
; /* used only for intermediate hops */
403 crypto_cipher_env_t
*n_crypto
;
407 char onionskin
[DH_ONIONSKIN_LEN
]; /* for storage while onionskin pending */
408 long timestamp_created
;
409 uint8_t dirty
; /* whether this circuit has been used yet */
416 typedef struct circuit_t circuit_t
;
436 int DirRebuildPeriod
;
437 int DirFetchPostPeriod
;
439 int MaxOnionsPending
;
440 int NewCircuitPeriod
;
447 /* all the function prototypes go here */
449 /********************************* buffers.c ***************************/
451 int find_on_inbuf(char *string
, int string_len
, buf_t
*buf
);
454 buf_t
*buf_new_with_capacity(size_t size
);
455 void buf_free(buf_t
*buf
);
457 size_t buf_datalen(const buf_t
*buf
);
458 size_t buf_capacity(const buf_t
*buf
);
459 const char *_buf_peek_raw_buffer(const buf_t
*buf
);
461 int read_to_buf(int s
, int at_most
, buf_t
*buf
, int *reached_eof
);
462 int read_to_buf_tls(tor_tls
*tls
, int at_most
, buf_t
*buf
);
464 int flush_buf(int s
, buf_t
*buf
, int *buf_flushlen
);
465 int flush_buf_tls(tor_tls
*tls
, buf_t
*buf
, int *buf_flushlen
);
467 int write_to_buf(const char *string
, int string_len
, buf_t
*buf
);
468 int fetch_from_buf(char *string
, int string_len
, buf_t
*buf
);
469 int fetch_from_buf_http(buf_t
*buf
,
470 char *headers_out
, int max_headerlen
,
471 char *body_out
, int max_bodylen
);
472 int fetch_from_buf_socks(buf_t
*buf
, char *socks_version
,
473 char *reply
, int *replylen
,
474 char *addr_out
, int max_addrlen
,
477 /********************************* circuit.c ***************************/
479 void circuit_add(circuit_t
*circ
);
480 void circuit_remove(circuit_t
*circ
);
481 circuit_t
*circuit_new(aci_t p_aci
, connection_t
*p_conn
);
482 void circuit_free(circuit_t
*circ
);
484 circuit_t
*circuit_enumerate_by_naddr_nport(circuit_t
*start
, uint32_t naddr
, uint16_t nport
);
485 circuit_t
*circuit_get_by_aci_conn(aci_t aci
, connection_t
*conn
);
486 circuit_t
*circuit_get_by_conn(connection_t
*conn
);
487 circuit_t
*circuit_get_newest_open(void);
489 int circuit_deliver_relay_cell(cell_t
*cell
, circuit_t
*circ
,
490 int cell_direction
, crypt_path_t
*layer_hint
);
491 int relay_crypt(circuit_t
*circ
, char *in
, int inlen
, char cell_direction
,
492 crypt_path_t
**layer_hint
, char *recognized
, connection_t
**conn
);
493 int relay_check_recognized(circuit_t
*circ
, int cell_direction
, char *stream
, connection_t
**conn
);
495 void circuit_resume_edge_reading(circuit_t
*circ
, int edge_type
, crypt_path_t
*layer_hint
);
496 int circuit_consider_stop_edge_reading(circuit_t
*circ
, int edge_type
, crypt_path_t
*layer_hint
);
497 int circuit_consider_sending_sendme(circuit_t
*circ
, int edge_type
, crypt_path_t
*layer_hint
);
499 void circuit_close(circuit_t
*circ
);
500 void circuit_about_to_close_connection(connection_t
*conn
);
502 void circuit_dump_by_conn(connection_t
*conn
);
504 void circuit_expire_unused_circuits(void);
505 void circuit_launch_new(int failure_status
);
506 int circuit_establish_circuit(void);
507 void circuit_n_conn_open(connection_t
*or_conn
);
508 int circuit_send_next_onion_skin(circuit_t
*circ
);
509 int circuit_extend(cell_t
*cell
, circuit_t
*circ
);
510 int circuit_finish_handshake(circuit_t
*circ
, char *reply
);
511 int circuit_truncated(circuit_t
*circ
, crypt_path_t
*layer
);
513 void assert_cpath_ok(const crypt_path_t
*c
);
514 void assert_cpath_layer_ok(const crypt_path_t
*c
);
515 void assert_circuit_ok(const circuit_t
*c
);
517 extern unsigned long stats_n_relay_cells_relayed
;
518 extern unsigned long stats_n_relay_cells_delivered
;
520 /********************************* command.c ***************************/
522 void command_process_cell(cell_t
*cell
, connection_t
*conn
);
524 extern unsigned long stats_n_padding_cells_processed
;
525 extern unsigned long stats_n_create_cells_processed
;
526 extern unsigned long stats_n_created_cells_processed
;
527 extern unsigned long stats_n_relay_cells_processed
;
528 extern unsigned long stats_n_destroy_cells_processed
;
530 /********************************* config.c ***************************/
532 int getconfig(int argc
, char **argv
, or_options_t
*options
);
534 /********************************* connection.c ***************************/
536 connection_t
*connection_new(int type
);
537 void connection_free(connection_t
*conn
);
539 int connection_create_listener(struct sockaddr_in
*bindaddr
, int type
);
541 int connection_connect(connection_t
*conn
, char *address
, uint32_t addr
, uint16_t port
);
542 int retry_all_connections(uint16_t or_listenport
, uint16_t ap_listenport
, uint16_t dir_listenport
);
544 int connection_handle_read(connection_t
*conn
);
545 int connection_read_to_buf(connection_t
*conn
);
547 int connection_fetch_from_buf(char *string
, int len
, connection_t
*conn
);
548 int connection_find_on_inbuf(char *string
, int len
, connection_t
*conn
);
550 int connection_wants_to_flush(connection_t
*conn
);
551 int connection_outbuf_too_full(connection_t
*conn
);
552 int connection_flush_buf(connection_t
*conn
);
553 int connection_handle_write(connection_t
*conn
);
554 void connection_write_to_buf(const char *string
, int len
, connection_t
*conn
);
556 connection_t
*connection_twin_get_by_addr_port(uint32_t addr
, uint16_t port
);
557 connection_t
*connection_exact_get_by_addr_port(uint32_t addr
, uint16_t port
);
559 connection_t
*connection_get_by_type(int type
);
560 connection_t
*connection_get_by_type_state(int type
, int state
);
561 connection_t
*connection_get_by_type_state_lastwritten(int type
, int state
);
563 int connection_receiver_bucket_should_increase(connection_t
*conn
);
565 #define connection_speaks_cells(conn) ((conn)->type == CONN_TYPE_OR)
566 #define connection_has_pending_tls_data(conn) \
567 ((conn)->type == CONN_TYPE_OR && \
568 (conn)->state == OR_CONN_STATE_OPEN && \
569 tor_tls_get_pending_bytes(conn->tls))
570 int connection_is_listener(connection_t
*conn
);
571 int connection_state_is_open(connection_t
*conn
);
573 int connection_send_destroy(aci_t aci
, connection_t
*conn
);
575 int connection_process_inbuf(connection_t
*conn
);
576 int connection_finished_flushing(connection_t
*conn
);
578 void assert_connection_ok(connection_t
*conn
, time_t now
);
580 /********************************* connection_edge.c ***************************/
582 int connection_edge_process_inbuf(connection_t
*conn
);
583 void connection_edge_send_command(connection_t
*fromconn
, circuit_t
*circ
, int relay_command
,
584 void *payload
, int payload_len
, crypt_path_t
*cpath_layer
);
586 int connection_edge_process_relay_cell(cell_t
*cell
, circuit_t
*circ
, connection_t
*conn
,
587 int edge_type
, crypt_path_t
*layer_hint
);
588 int connection_edge_finished_flushing(connection_t
*conn
);
590 int connection_edge_package_raw_inbuf(connection_t
*conn
);
592 int connection_exit_connect(connection_t
*conn
);
594 extern uint64_t stats_n_data_cells_packaged
;
595 extern uint64_t stats_n_data_bytes_packaged
;
596 extern uint64_t stats_n_data_cells_received
;
597 extern uint64_t stats_n_data_bytes_received
;
599 /********************************* connection_or.c ***************************/
601 int connection_or_process_inbuf(connection_t
*conn
);
602 int connection_or_finished_flushing(connection_t
*conn
);
604 void connection_or_init_conn_from_router(connection_t
*conn
, routerinfo_t
*router
);
605 connection_t
*connection_or_connect(routerinfo_t
*router
);
607 int connection_tls_start_handshake(connection_t
*conn
, int receiving
);
608 int connection_tls_continue_handshake(connection_t
*conn
);
610 void connection_or_write_cell_to_buf(const cell_t
*cellp
, connection_t
*conn
);
612 /********************************* cpuworker.c *****************************/
615 int connection_cpu_finished_flushing(connection_t
*conn
);
616 int connection_cpu_process_inbuf(connection_t
*conn
);
617 int cpuworker_main(void *data
);
618 int assign_to_cpuworker(connection_t
*cpuworker
, unsigned char question_type
,
621 /********************************* directory.c ***************************/
623 void directory_initiate_command(routerinfo_t
*router
, int command
);
624 int connection_dir_process_inbuf(connection_t
*conn
);
625 int connection_dir_finished_flushing(connection_t
*conn
);
627 /********************************* dns.c ***************************/
630 int connection_dns_finished_flushing(connection_t
*conn
);
631 int connection_dns_process_inbuf(connection_t
*conn
);
632 void dns_cancel_pending_resolve(char *question
, connection_t
*onlyconn
);
633 int dns_resolve(connection_t
*exitconn
);
635 /********************************* main.c ***************************/
637 void set_onion_key(crypto_pk_env_t
*k
);
638 crypto_pk_env_t
*get_onion_key(void);
639 void set_identity_key(crypto_pk_env_t
*k
);
640 crypto_pk_env_t
*get_identity_key(void);
641 crypto_pk_env_t
*get_link_key(void);
642 int connection_add(connection_t
*conn
);
643 int connection_remove(connection_t
*conn
);
644 void connection_set_poll_socket(connection_t
*conn
);
646 void get_connection_array(connection_t
***array
, int *n
);
648 void connection_watch_events(connection_t
*conn
, short events
);
649 int connection_is_reading(connection_t
*conn
);
650 void connection_stop_reading(connection_t
*conn
);
651 void connection_start_reading(connection_t
*conn
);
652 void connection_stop_writing(connection_t
*conn
);
653 void connection_start_writing(connection_t
*conn
);
655 const char *router_get_my_descriptor(void);
657 int main(int argc
, char *argv
[]);
659 /********************************* onion.c ***************************/
661 int decide_aci_type(char *local_nick
, char *remote_nick
);
663 int onion_pending_add(circuit_t
*circ
);
664 circuit_t
*onion_next_task(void);
665 void onion_pending_remove(circuit_t
*circ
);
667 int onionskin_answer(circuit_t
*circ
, unsigned char *payload
, unsigned char *keys
);
669 crypt_path_t
*onion_generate_cpath(routerinfo_t
**firsthop
);
671 int onion_skin_create(crypto_pk_env_t
*router_key
,
672 crypto_dh_env_t
**handshake_state_out
,
673 char *onion_skin_out
); /* Must be DH_ONIONSKIN_LEN bytes long */
675 int onion_skin_server_handshake(char *onion_skin
, /* DH_ONIONSKIN_LEN bytes long */
676 crypto_pk_env_t
*private_key
,
677 char *handshake_reply_out
, /* DH_KEY_LEN bytes long */
681 int onion_skin_client_handshake(crypto_dh_env_t
*handshake_state
,
682 char *handshake_reply
,/* Must be DH_KEY_LEN bytes long*/
686 /********************************* routers.c ***************************/
688 int learn_my_address(struct sockaddr_in
*me
);
689 void router_retry_connections(void);
690 routerinfo_t
*router_pick_directory_server(void);
691 void router_upload_desc_to_dirservers(void);
692 routerinfo_t
*router_get_by_addr_port(uint32_t addr
, uint16_t port
);
693 routerinfo_t
*router_get_by_link_pk(crypto_pk_env_t
*pk
);
694 routerinfo_t
*router_get_by_nickname(char *nickname
);
695 void router_get_directory(directory_t
**pdirectory
);
696 int router_is_me(uint32_t addr
, uint16_t port
);
697 void router_mark_as_down(char *nickname
);
698 int router_get_list_from_file(char *routerfile
);
699 int router_get_router_hash(char *s
, char *digest
);
700 int router_get_dir_hash(char *s
, char *digest
);
702 /* Reads a list of known routers, unsigned. */
703 int router_get_list_from_string(char *s
);
704 /* Exported for debugging */
705 int router_get_list_from_string_impl(char **s
, directory_t
**dest
, int n_good_nicknames
, const char *good_nickname_lst
[]);
706 /* Reads a signed directory. */
707 int router_get_dir_from_string(char *s
, crypto_pk_env_t
*pkey
);
708 /* Exported or debugging */
709 int router_get_dir_from_string_impl(char *s
, directory_t
**dest
,
710 crypto_pk_env_t
*pkey
);
711 routerinfo_t
*router_get_entry_from_string(char **s
);
712 int router_compare_to_exit_policy(connection_t
*conn
);
713 void routerinfo_free(routerinfo_t
*router
);
714 int router_dump_router_to_string(char *s
, int maxlen
, routerinfo_t
*router
,
715 crypto_pk_env_t
*ident_key
);
716 const routerinfo_t
*router_get_desc_routerinfo(void);
717 const char *router_get_my_descriptor(void);
718 int router_rebuild_descriptor(void);
720 /********************************* dirserv.c ***************************/
721 int dirserv_add_own_fingerprint(const char *nickname
, crypto_pk_env_t
*pk
);
722 int dirserv_parse_fingerprint_file(const char *fname
);
723 int dirserv_router_fingerprint_is_known(const routerinfo_t
*router
);
724 void dirserv_free_fingerprint_list();
725 int dirserv_add_descriptor(const char **desc
);
726 int dirserv_init_from_directory_string(const char *dir
);
727 void dirserv_free_descriptors();
728 int dirserv_dump_directory_to_string(char *s
, int maxlen
,
729 crypto_pk_env_t
*private_key
);
730 void directory_set_dirty();
731 size_t dirserv_get_directory(const char **cp
);