/usr/share/emacs/site-lisp/elpa-src/jabber-0.8.92/jabber-socks5.el is in elpa-jabber 0.8.92+git98dc8e-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 | ;; jabber-socks5.el - SOCKS5 bytestreams by JEP-0065
;; Copyright (C) 2003, 2004, 2007 - Magnus Henoch - mange@freemail.hu
;; Copyright (C) 2002, 2003, 2004 - tom berger - object@intelectronica.net
;; This file is a part of jabber.el.
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(require 'jabber-iq)
(require 'jabber-disco)
(require 'jabber-si-server)
(require 'jabber-si-client)
;; jabber-core will require fsm for us
(require 'jabber-core)
(eval-when-compile (require 'cl))
(defvar jabber-socks5-pending-sessions nil
"List of pending sessions.
Each entry is a list, containing:
* Stream ID
* Full JID of initiator
* State machine managing the session")
(defvar jabber-socks5-active-sessions nil
"List of active sessions.
Each entry is a list, containing:
* Network connection
* Stream ID
* Full JID of initiator
* Profile data function")
(defcustom jabber-socks5-proxies nil
"JIDs of JEP-0065 proxies to use for file transfer.
Put preferred ones first."
:type '(repeat string)
:group 'jabber
; :set 'jabber-socks5-set-proxies)
)
(defvar jabber-socks5-proxies-data nil
"Alist containing information about proxies.
Keys of the alist are strings, the JIDs of the proxies.
Values are \"streamhost\" XML nodes.")
(jabber-disco-advertise-feature "http://jabber.org/protocol/bytestreams")
(add-to-list 'jabber-si-stream-methods
(list "http://jabber.org/protocol/bytestreams"
'jabber-socks5-client-1
'jabber-socks5-accept))
(defun jabber-socks5-set-proxies (symbol value)
"Set `jabber-socks5-proxies' and query proxies.
This is the set function of `jabber-socks5-proxies-data'."
(set-default symbol value)
(when jabber-connections
(jabber-socks5-query-all-proxies)))
(defun jabber-socks5-query-all-proxies (jc &optional callback)
"Ask all proxies in `jabber-socks5-proxies' for connection information.
If CALLBACK is non-nil, call it with no arguments when all
proxies have answered."
(interactive (list (jabber-read-account)))
(setq jabber-socks5-proxies-data nil)
(dolist (proxy jabber-socks5-proxies)
(jabber-socks5-query-proxy jc proxy callback)))
(defun jabber-socks5-query-proxy (jc jid &optional callback)
"Query the SOCKS5 proxy specified by JID for IP and port number."
(jabber-send-iq jc jid "get"
'(query ((xmlns . "http://jabber.org/protocol/bytestreams")))
#'jabber-socks5-process-proxy-response (list callback t)
#'jabber-socks5-process-proxy-response (list callback nil)))
(defun jabber-socks5-process-proxy-response (jc xml-data closure-data)
"Process response from proxy query."
(let* ((query (jabber-iq-query xml-data))
(from (jabber-xml-get-attribute xml-data 'from))
(streamhosts (jabber-xml-get-children query 'streamhost)))
(let ((existing-entry (assoc from jabber-socks5-proxies-data)))
(when existing-entry
(setq jabber-socks5-proxies-data
(delq existing-entry jabber-socks5-proxies-data))))
(destructuring-bind (callback successp) closure-data
(when successp
(setq jabber-socks5-proxies-data
(cons (cons from streamhosts)
jabber-socks5-proxies-data)))
(message "%s from %s. %d of %d proxies have answered."
(if successp "Response" "Error") from
(length jabber-socks5-proxies-data) (length jabber-socks5-proxies))
(when (and callback (= (length jabber-socks5-proxies-data) (length jabber-socks5-proxies)))
(funcall callback)))))
(define-state-machine jabber-socks5
:start ((jc jid sid profile-function role)
"Start JEP-0065 bytestream with JID.
SID is the session ID used.
PROFILE-FUNCTION is the function to call upon success. See `jabber-si-stream-methods'.
ROLE is either :initiator or :target. The initiator sends an IQ
set; the target waits for one."
(let ((new-state-data (list :jc jc
:jid jid
:sid sid
:profile-function profile-function
:role role))
(new-state
;; We want information about proxies; it might be needed in
;; various situations.
(cond
((null jabber-socks5-proxies)
;; We know no proxy addresses. Try to find them by disco.
'seek-proxies)
((null jabber-socks5-proxies-data)
;; We need to query the proxies for addresses.
'query-proxies)
;; So, we have our proxies.
(t
'initiate))))
(list new-state new-state-data nil))))
(defun jabber-socks5-accept (jc jid sid profile-function)
"Remember that we are waiting for connection from JID, with stream id SID"
;; asking the user for permission is done in the profile
(add-to-list 'jabber-socks5-pending-sessions
(list sid jid (start-jabber-socks5 jc jid sid profile-function :target))))
(define-enter-state jabber-socks5 seek-proxies (fsm state-data)
;; Look for items at the server.
(let* ((jc (plist-get state-data :jc))
(server (jabber-jid-server (jabber-connection-jid jc))))
(jabber-disco-get-items jc
server
nil
(lambda (jc fsm result)
(fsm-send-sync fsm (cons :items result)))
fsm))
;; Spend no more than five seconds looking for a proxy.
(list state-data 5))
(define-state jabber-socks5 seek-proxies (fsm state-data event callback)
"Collect disco results, looking for a bytestreams proxy."
;; We put the number of outstanding requests as :remaining-info in
;; the state-data plist.
(cond
;; We're not ready to handle the IQ stanza yet
((eq (car-safe event) :iq)
:defer)
;; Got list of items at the server.
((eq (car-safe event) :items)
(dolist (entry (cdr event))
;; Each entry is ["name" "jid" "node"]. We send a disco info
;; request to everything without a node.
(when (null (aref entry 2))
(lexical-let ((jid (aref entry 1)))
(jabber-disco-get-info
(plist-get state-data :jc)
jid nil
(lambda (jc fsm result)
(fsm-send-sync fsm (list :info jid result)))
fsm))))
;; Remember number of requests sent. But if none, we just go on.
(if (cdr event)
(list 'seek-proxies (plist-put state-data :remaining-info (length (cdr event))) :keep)
(list 'initiate state-data nil)))
;; Got disco info from an item at the server.
((eq (car-safe event) :info)
(fsm-debug-output "got disco event")
;; Count the response.
(plist-put state-data :remaining-info (1- (plist-get state-data :remaining-info)))
(unless (eq (first (third event)) 'error)
(let ((identities (first (third event))))
;; Is it a bytestream proxy?
(when (dolist (identity identities)
(when (and (string= (aref identity 1) "proxy")
(string= (aref identity 2) "bytestreams"))
(return t)))
;; Yes, it is. Add it to the list.
(push (second event) jabber-socks5-proxies))))
;; Wait for more responses, if any are to be expected.
(if (zerop (plist-get state-data :remaining-info))
;; No more... go on to querying the proxies.
(list 'query-proxies state-data nil)
;; We expect more responses...
(list 'seek-proxies state-data :keep)))
((eq event :timeout)
;; We can't wait anymore...
(list 'query-proxies state-data nil))))
(define-enter-state jabber-socks5 query-proxies (fsm state-data)
(jabber-socks5-query-all-proxies
(plist-get state-data :jc)
(lexical-let ((fsm fsm))
(lambda () (fsm-send-sync fsm :proxies))))
(list state-data 5))
(define-state jabber-socks5 query-proxies (fsm state-data event callback)
"Query proxies in `jabber-socks5-proxies'."
(cond
;; Can't handle the iq stanza yet...
((eq (car-safe event) :iq)
:defer)
((eq (car-safe event) :info)
;; stray event... do nothing
(list 'query-proxies state-data :keep))
;; Got response/error from all proxies, or timeout
((memq event '(:proxies :timeout))
(list 'initiate state-data nil))))
(define-enter-state jabber-socks5 initiate (fsm state-data)
;; Sort the alist jabber-socks5-proxies-data such that the
;; keys are in the same order as in jabber-socks5-proxies.
(setq jabber-socks5-proxies-data
(sort jabber-socks5-proxies-data
#'(lambda (a b)
(> (length (member (car a) jabber-socks5-proxies))
(length (member (car b) jabber-socks5-proxies))))))
;; If we're the initiator, send initiation stanza.
(when (eq (plist-get state-data :role) :initiator)
;; This is where initiation of server sockets would go
(jabber-send-iq
(plist-get state-data :jc)
(plist-get state-data :jid) "set"
`(query ((xmlns . "http://jabber.org/protocol/bytestreams")
(sid . ,(plist-get state-data :sid)))
,@(mapcar
#'(lambda (proxy)
(mapcar
#'(lambda (streamhost)
(list 'streamhost
(list (cons 'jid (jabber-xml-get-attribute streamhost 'jid))
(cons 'host (jabber-xml-get-attribute streamhost 'host))
(cons 'port (jabber-xml-get-attribute streamhost 'port)))
;; (proxy ((xmlns . "http://affinix.com/jabber/stream")))
))
(cdr proxy)))
jabber-socks5-proxies-data)
;; (fast ((xmlns . "http://affinix.com/jabber/stream")))
)
(lexical-let ((fsm fsm))
(lambda (jc xml-data closure-data)
(fsm-send-sync fsm (list :iq xml-data))))
nil
;; TODO: error handling
#'jabber-report-success "SOCKS5 negotiation"))
;; If we're the target, we just wait for an incoming stanza.
(list state-data nil))
(add-to-list 'jabber-iq-set-xmlns-alist
(cons "http://jabber.org/protocol/bytestreams" 'jabber-socks5-process))
(defun jabber-socks5-process (jc xml-data)
"Accept IQ get for SOCKS5 bytestream"
(let* ((jid (jabber-xml-get-attribute xml-data 'from))
(id (jabber-xml-get-attribute xml-data 'id))
(query (jabber-iq-query xml-data))
(sid (jabber-xml-get-attribute query 'sid))
(session (dolist (pending-session jabber-socks5-pending-sessions)
(when (and (equal sid (nth 0 pending-session))
(equal jid (nth 1 pending-session)))
(return pending-session)))))
;; check that we really are expecting this session
(unless session
(jabber-signal-error "auth" 'not-acceptable))
(setq jabber-socks5-pending-sessions (delq session jabber-socks5-pending-sessions))
(fsm-send-sync (nth 2 session) (list :iq xml-data))
;; find streamhost to connect to
;; (let* ((streamhosts (jabber-xml-get-children query 'streamhost))
;; (streamhost (dolist (streamhost streamhosts)
;; (let ((connection (jabber-socks5-connect streamhost sid jid (concat jabber-username "@" jabber-server "/" jabber-resource))))
;; (when connection
;; ;; We select the first streamhost that we are able to connect to.
;; (push (list connection sid jid profile-data-function)
;; jabber-socks5-active-sessions)
;; ;; Now set the filter, for the rest of the output
;; (set-process-filter connection #'jabber-socks5-filter)
;; (set-process-sentinel connection #'jabber-socks5-sentinel)
;; (return streamhost))))))
;; (unless streamhost
;; (jabber-signal-error "cancel" 'item-not-found))
;; ;; tell initiator which streamhost we use
;; (jabber-send-iq jid "result"
;; `(query ((xmlns . "http://jabber.org/protocol/bytestreams"))
;; (streamhost-used ((jid . ,(jabber-xml-get-attribute streamhost 'jid)))))
;; nil nil nil nil id)
;; ;; now, as data is sent, it will be passed to the profile.
;; )
))
(define-state jabber-socks5 initiate (fsm state-data event callback)
(let* ((jc (plist-get state-data :jc))
(jc-data (fsm-get-state-data jc))
(our-jid (concat (plist-get jc-data :username) "@"
(plist-get jc-data :server) "/"
(plist-get jc-data :resource)))
(their-jid (plist-get state-data :jid))
(initiator-jid (if (eq (plist-get state-data :role) :initiator) our-jid their-jid))
(target-jid (if (eq (plist-get state-data :role) :initiator) their-jid our-jid)))
(cond
;; Stray event...
((memq (car-safe event) '(:proxy :info))
(list 'initiate state-data :keep))
;; Incoming IQ
((eq (car-safe event) :iq)
(let ((xml-data (second event)))
;; This is either type "set" (with a list of streamhosts to
;; use), or a "result" (indicating the streamhost finally used
;; by the other party).
(cond
((string= (jabber-xml-get-attribute xml-data 'type) "set")
;; A "set" makes sense if we're the initiator and offered
;; Psi's "fast mode". We don't yet, though, so this is only
;; for target.
(dolist (streamhost (jabber-xml-get-children (jabber-iq-query xml-data) 'streamhost))
(jabber-xml-let-attributes
(jid host port) streamhost
;; This is where we would attempt to support zeroconf
(when (and jid host port)
(start-jabber-socks5-connection
jc initiator-jid target-jid jid
(plist-get state-data :sid) host port fsm))))
(list 'wait-for-connection (plist-put state-data :iq-id (jabber-xml-get-attribute xml-data 'id)) 30))
((string= (jabber-xml-get-attribute xml-data 'type) "result")
;; The other party has decided what streamhost to use.
(let* ((proxy-used (jabber-xml-get-attribute (jabber-xml-path xml-data '(query streamhost-used)) 'jid))
;; If JID is our own JID, we have probably already detected
;; what connection to use. But that is a later problem...
(streamhosts (cdr (assoc proxy-used jabber-socks5-proxies-data))))
;; Try to connect to all addresses of this proxy...
(dolist (streamhost streamhosts)
(jabber-xml-let-attributes
(jid host port) streamhost
(when (and jid host port)
(start-jabber-socks5-connection
jc initiator-jid target-jid jid
(plist-get state-data :sid) host port fsm)))))
(list 'wait-for-connection state-data 30))))))))
(define-state-machine jabber-socks5-connection
:start
((jc initiator-jid target-jid streamhost-jid sid host port socks5-fsm)
"Connect to a single JEP-0065 streamhost."
(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
;; make-network-process, which we really want, for asynchronous
;; connection and such, was introduced in Emacs 22.
(if (fboundp 'make-network-process)
(let ((connection
(make-network-process
:name "socks5"
:buffer nil
:host host
:service (string-to-number port)
:nowait t
:filter (fsm-make-filter fsm)
:sentinel (fsm-make-sentinel fsm))))
(list 'wait-for-connection
(list :jc jc
:connection connection
:initiator-jid initiator-jid
:target-jid target-jid
:streamhost-jid streamhost-jid
:sid sid
:socks5-fsm socks5-fsm)
30))
;; So we open a stream, and wait for the connection to succeed.
(condition-case nil
(let ((connection
(open-network-stream "socks5" nil
host (string-to-number port))))
(set-process-filter connection (fsm-make-filter fsm))
(set-process-sentinel connection (fsm-make-sentinel fsm))
(list 'authenticate
(list :jc jc
:connection connection
:initiator-jid initiator-jid
:target-jid target-jid
:streamhost-jid streamhost-jid
:sid sid
:socks5-fsm socks5-fsm)
nil))
(error (list 'fail '() nil)))))))
(define-state jabber-socks5-connection wait-for-connection
(fsm state-data event callback)
(cond
((eq (car-safe event) :sentinel)
(let ((string (third event)))
(cond
;; Connection succeeded
((string= (substring string 0 4) "open")
(list 'authenticate state-data nil))
;; Connection failed
(t
(list 'fail state-data nil)))))))
(define-enter-state jabber-socks5-connection authenticate
(fsm state-data)
"Send authenticate command."
;; version: 5. number of auth methods supported: 1.
;; which one: no authentication.
(process-send-string (plist-get state-data :connection) (string 5 1 0))
(list state-data 30))
(define-state jabber-socks5-connection authenticate
(fsm state-data event callback)
"Receive response to authenticate command."
(cond
((eq (car-safe event) :filter)
(let ((string (third event)))
;; should return:
;; version: 5. auth method to use: none
(if (string= string (string 5 0))
;; Authenticated. Send connect command.
(list 'connect state-data nil)
;; Authentication failed...
(delete-process (second event))
(list 'fail state-data nil))))
((eq (car-safe event) :sentinel)
(list 'fail state-data nil))))
(define-enter-state jabber-socks5-connection connect (fsm state-data)
"Send connect command."
(let* ((sid (plist-get state-data :sid))
(initiator (plist-get state-data :initiator-jid))
(target (plist-get state-data :target-jid))
(hash (sha1-string (concat sid initiator target))))
(process-send-string
(plist-get state-data :connection)
(concat (string 5 1 0 3 (length hash))
hash
(string 0 0)))
(list state-data 30)))
(define-state jabber-socks5-connection connect
(fsm state-data event callback)
"Receive response to connect command."
(cond
((eq (car-safe event) :filter)
(let ((string (third event)))
(if (string= (substring string 0 2) (string 5 0))
;; connection established
(progn
(fsm-send (plist-get state-data :socks5-fsm)
(list :connected
(plist-get state-data :connection)
(plist-get state-data :streamhost-jid)))
;; Our work is done
(list 'done nil))
(list 'fail state-data nil))))
((eq (car-safe event) :sentinel)
(list 'fail state-data nil))))
(define-state jabber-socks5-connection done
(fsm state-data event callback)
;; ignore all events
(list 'done nil nil))
(define-enter-state jabber-socks5-connection fail (fsm state-data)
;; Notify parent fsm about failure
(fsm-send (plist-get state-data :socks5-fsm)
:not-connected)
(list nil nil))
(define-state jabber-socks5-connection fail
(fsm state-data event callback)
;; ignore all events
(list 'fail nil nil))
(define-state jabber-socks5 wait-for-connection
(fsm state-data event callback)
(cond
((eq (car-safe event) :connected)
(destructuring-bind (ignored connection streamhost-jid) event
(setq state-data (plist-put state-data :connection connection))
;; If we are expected to tell which streamhost we chose, do so.
(let ((iq-id (plist-get state-data :iq-id)))
(when iq-id
(jabber-send-iq
(plist-get state-data :jc)
(plist-get state-data :jid) "result"
`(query ((xmlns . "http://jabber.org/protocol/bytestreams"))
(streamhost-used ((jid . ,streamhost-jid))))
nil nil nil nil
iq-id)))
;; If we are the initiator, we should activate the bytestream.
(if (eq (plist-get state-data :role) :initiator)
(progn
(jabber-send-iq
(plist-get state-data :jc)
streamhost-jid "set"
`(query ((xmlns . "http://jabber.org/protocol/bytestreams")
(sid . ,(plist-get state-data :sid)))
(activate nil ,(plist-get state-data :jid)))
(lambda (jc xml-data fsm) (fsm-send-sync fsm :activated)) fsm
(lambda (jc xml-data fsm) (fsm-send-sync fsm :activation-failed)) fsm)
(list 'wait-for-activation state-data 10))
;; Otherwise, we just let the data flow.
(list 'stream-activated state-data nil))))
((eq event :not-connected)
;; If we were counting the streamhosts, we would know when there
;; are no more chances left.
(list 'wait-for-connection state-data :keep))
((eq event :timeout)
(list 'fail (plist-put state-data :error "Timeout when connecting to streamhosts") nil))))
(define-state jabber-socks5 wait-for-activation
(fsm state-data event callback)
(cond
((eq event :activated)
(list 'stream-activated state-data nil))
((eq event :activation-failed)
(list 'fail (plist-put state-data :error "Proxy activation failed") nil))
;; Stray events from earlier state
((eq (car-safe event) :connected)
;; We just close the connection
(delete-process (second event))
(list 'wait-for-activation state-data :keep))
((eq event :not-connected)
(list 'wait-for-activation state-data :keep))))
(define-enter-state jabber-socks5 stream-activated
(fsm state-data)
(let ((connection (plist-get state-data :connection))
(jc (plist-get state-data :jc))
(jid (plist-get state-data :jid))
(sid (plist-get state-data :sid))
(profile-function (plist-get state-data :profile-function)))
(set-process-filter connection (fsm-make-filter fsm))
(set-process-sentinel connection (fsm-make-sentinel fsm))
;; Call the profile function, passing the data send function, and
;; receiving the data receiving function. Put the data receiving
;; function in the plist.
(list (plist-put state-data
:profile-data-function
(funcall profile-function
jc jid sid
(lexical-let ((fsm fsm))
(lambda (data)
(fsm-send fsm (list :send data))))))
nil)))
(define-state jabber-socks5 stream-activated
(fsm state-data event callback)
(let ((jc (plist-get state-data :jc))
(connection (plist-get state-data :connection))
(profile-data-function (plist-get state-data :profile-data-function))
(sid (plist-get state-data :sid))
(jid (plist-get state-data :jid)))
(cond
((eq (car-safe event) :send)
(process-send-string connection (second event))
(list 'stream-activated state-data nil))
((eq (car-safe event) :filter)
;; Pass data from connection to profile data function
;; If the data function requests it, tear down the connection.
(unless (funcall profile-data-function jc jid sid (third event))
(fsm-send fsm (list :sentinel (second event) "shutdown")))
(list 'stream-activated state-data nil))
((eq (car-safe event) :sentinel)
;; Connection terminated. Shuffle together the remaining data,
;; and kill the buffer.
(delete-process (second event))
(funcall profile-data-function jc jid sid nil)
(list 'closed nil nil))
;; Stray events from earlier state
((eq (car-safe event) :connected)
;; We just close the connection
(delete-process (second event))
(list 'stream-activated state-data nil))
((eq event :not-connected)
(list 'stream-activated state-data nil)))))
(define-enter-state jabber-socks5 fail (fsm state-data)
"Tell our caller that we failed."
(let ((jc (plist-get state-data :jc))
(jid (plist-get state-data :jid))
(sid (plist-get state-data :sid))
(profile-function (plist-get state-data :profile-function))
(iq-id (plist-get state-data :iq-id)))
(funcall profile-function jc jid sid (plist-get state-data :error))
(when iq-id
(jabber-send-iq-error jc jid iq-id nil "cancel"
'remote-server-not-found)))
(list nil nil))
(defun jabber-socks5-client-1 (jc jid sid profile-function)
"Negotiate a SOCKS5 connection with JID.
This function simply starts a state machine."
(add-to-list 'jabber-socks5-pending-sessions
(list sid jid (start-jabber-socks5 jc jid sid profile-function :initiator))))
;; (defun jabber-socks5-client-2 (xml-data jid sid profile-function)
;; "Contact has selected a streamhost to use. Connect to the proxy."
;; (let* ((query (jabber-iq-query xml-data))
;; (streamhost-used (car (jabber-xml-get-children query 'streamhost-used)))
;; (proxy-used (jabber-xml-get-attribute streamhost-used 'jid))
;; connection)
;; (let ((streamhosts-left (cdr (assoc proxy-used jabber-socks5-proxies-data))))
;; (while (and streamhosts-left (not connection))
;; (setq connection
;; (jabber-socks5-connect (car streamhosts-left)
;; sid
;; (concat jabber-username "@" jabber-server "/" jabber-resource)
;; jid))
;; (setq streamhosts-left (cdr streamhosts-left))))
;; (unless connection
;; (error "Couldn't connect to proxy %s" proxy-used))
;; ;; Activation is only needed for proxies.
;; (jabber-send-iq proxy-used "set"
;; `(query ((xmlns . "http://jabber.org/protocol/bytestreams")
;; (sid . ,sid))
;; (activate () ,jid))
;; (lexical-let ((jid jid) (sid sid) (profile-function profile-function)
;; (connection connection))
;; (lambda (xml-data closure-data)
;; (jabber-socks5-client-3 xml-data jid sid profile-function connection))) nil
;; ;; TODO: report error to contact?
;; #'jabber-report-success "Proxy activation")))
;; (defun jabber-socks5-client-3 (xml-data jid sid profile-function proxy-connection)
;; "Proxy is activated. Start the transfer."
;; ;; The response from the proxy does not contain any interesting
;; ;; information, beyond success confirmation.
;; (funcall profile-function jid sid
;; (lexical-let ((proxy-connection proxy-connection))
;; (lambda (data)
;; (process-send-string proxy-connection data)))))
(provide 'jabber-socks5)
;;; arch-tag: 9e70dfea-2522-40c6-a79f-302c8fb82ac5
|