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GeezerVison is showing github.com — ssh-python/ssh/session.pyx at master · iCodeIN/ssh-python Expand file tree/ Copy pathsession.pyxMore file actions 680 lines (592 loc) · 22.1 KB / Copy pathsession.pyxFile metadata and controls680 lines (592 loc) · 22.1 KB 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 # This file is part of ssh-python. # Copyright (C) 2018 Panos Kittenis # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation, version 2.1. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-130 from cpython cimport PyObject_AsFileDescriptor from libc.stdlib cimport malloc, free from libc.string cimport const_char from channel cimport Channel from connector cimport Connector from utils cimport to_bytes, to_str, handle_error_codes, handle_auth_error_codes from options cimport Option from key cimport SSHKey from sftp cimport SFTP from scp cimport SCP from exceptions import OptionError, InvalidAPIUse, ChannelOpenFailure from c_sftp cimport sftp_session, sftp_new, sftp_init cimport c_ssh # SSH status flags SSH_CLOSED = c_ssh.SSH_CLOSED SSH_READ_PENDING = c_ssh.SSH_READ_PENDING SSH_CLOSED_ERROR = c_ssh.SSH_CLOSED_ERROR SSH_WRITE_PENDING = c_ssh.SSH_WRITE_PENDING # Authentication codes SSH_AUTH_SUCCESS = c_ssh.ssh_auth_e.SSH_AUTH_SUCCESS SSH_AUTH_DENIED = c_ssh.ssh_auth_e.SSH_AUTH_DENIED SSH_AUTH_PARTIAL = c_ssh.ssh_auth_e.SSH_AUTH_PARTIAL SSH_AUTH_INFO = c_ssh.ssh_auth_e.SSH_AUTH_INFO SSH_AUTH_AGAIN = c_ssh.ssh_auth_e.SSH_AUTH_AGAIN SSH_AUTH_ERROR = c_ssh.ssh_auth_e.SSH_AUTH_ERROR cdef bint _check_connected(c_ssh.ssh_session session) nogil except -1: if not c_ssh.ssh_is_connected(session): with gil: raise InvalidAPIUse("Session is not connected") return 0 cdef class Session: """Libssh session class providing session related functions.""" def __cinit__(self): self._session = c_ssh.ssh_new() if self._session is NULL: raise MemoryError def __dealloc__(self): if self._session is not NULL: c_ssh.ssh_free(self._session) self._session = NULL def set_socket(self, socket not None): """Set socket to use for session. Not part of libssh API but needs to be done in C to be able to translate python sockets to file descriptors to be used by libssh. """ cdef c_ssh.socket_t _sock = PyObject_AsFileDescriptor(socket) cdef c_ssh.ssh_options_e fd = c_ssh.ssh_options_e.SSH_OPTIONS_FD cdef int rc self.sock = socket self._sock = _sock with nogil: rc = c_ssh.ssh_options_set(self._session, fd, &_sock) handle_error_codes(rc, self._session) return rc def blocking_flush(self, int timeout): cdef int rc with nogil: rc = c_ssh.ssh_blocking_flush(self._session, timeout) return handle_error_codes(rc, self._session) def channel_new(self): cdef c_ssh.ssh_channel _channel cdef Channel channel with nogil: _check_connected(self._session) _channel = c_ssh.ssh_channel_new(self._session) if _channel is NULL: raise ChannelOpenFailure channel = Channel.from_ptr(_channel, self) return channel def sftp_new(self): cdef sftp_session _sftp cdef SFTP sftp with nogil: _check_connected(self._session) _sftp = sftp_new(self._session) if _sftp is NULL: return handle_error_codes( c_ssh.ssh_get_error_code(self._session), self._session) sftp = SFTP.from_ptr(_sftp, self) return sftp def sftp_init(self): """Convenience function for creating and initialising new SFTP session. Not part of libssh API.""" cdef sftp_session _sftp cdef SFTP sftp cdef int rc with nogil: _check_connected(self._session) _sftp = sftp_new(self._session) if _sftp is NULL: with gil: return handle_error_codes( c_ssh.ssh_get_error_code(self._session), self._session) rc = sftp_init(_sftp) sftp = SFTP.from_ptr(_sftp, self) handle_error_codes(rc, self._session) return sftp def connect(self): cdef int rc with nogil: rc = c_ssh.ssh_connect(self._session) return handle_error_codes(rc, self._session) def disconnect(self): """No-op. Handled by object de-allocation.""" # Due to bug in libssh that segfaults if session # is disconnected before freeing channels spawned # by that session - even if channels are closed. pass # if not c_ssh.ssh_is_connected(self._session): # return # with nogil: # c_ssh.ssh_disconnect(self._session) def connector_new(self): cdef c_ssh.ssh_connector _connector with nogil: _connector = c_ssh.ssh_connector_new(self._session) if _connector is NULL: return return Connector.from_ptr(_connector, self) def accept_forward(self, int timeout, int dest_port): cdef c_ssh.ssh_channel _channel with nogil: _check_connected(self._session) _channel = c_ssh.ssh_channel_accept_forward( self._session, timeout, &dest_port) if _channel is NULL: return return Channel.from_ptr(_channel, self) def cancel_forward(self, address not None, int port): cdef bytes b_address = to_bytes(address) cdef char *c_address = b_address cdef int rc with nogil: rc = c_ssh.ssh_channel_cancel_forward( self._session, c_address, port) return handle_error_codes(rc, self._session) def listen_forward(self, address not None, int port, int bound_port): cdef bytes b_address = to_bytes(address) cdef char *c_address = b_address cdef int rc with nogil: rc = c_ssh.ssh_channel_listen_forward( self._session, c_address, port, &bound_port) return handle_error_codes(rc, self._session) def get_disconnect_message(self): cdef const char *message cdef bytes b_message with nogil: _check_connected(self._session) message = c_ssh.ssh_get_disconnect_message(self._session) b_message = message return b_message def get_fd(self): cdef c_ssh.socket_t _sock with nogil: _sock = c_ssh.ssh_get_fd(self._session) return _sock def get_issue_banner(self): cdef char *_banner cdef bytes banner with nogil: _check_connected(self._session) _banner = c_ssh.ssh_get_issue_banner(self._session) if _banner is NULL: return banner = _banner return banner def get_openssh_version(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_get_openssh_version(self._session) return rc def get_server_publickey(self): cdef int rc cdef c_ssh.ssh_key _key with nogil: _check_connected(self._session) _key = c_ssh.ssh_key_new() if _key is NULL: with gil: raise MemoryError rc = c_ssh.ssh_get_server_publickey(self._session, &_key) if rc != c_ssh.SSH_OK: c_ssh.ssh_key_free(_key) with gil: return handle_error_codes(rc, self._session) return SSHKey.from_ptr(_key) def get_version(self): cdef int rc with nogil: rc = c_ssh.ssh_get_version(self._session) return rc def get_status(self): cdef int rc with nogil: rc = c_ssh.ssh_get_status(self._session) return rc def get_poll_flags(self): cdef int rc with nogil: rc = c_ssh.ssh_get_poll_flags(self._session) return rc def is_blocking(self): cdef bint rc with nogil: rc = c_ssh.ssh_is_blocking(self._session) return bool(rc) def is_connected(self): cdef bint rc with nogil: rc = c_ssh.ssh_is_connected(self._session) return bool(rc) def is_server_known(self): cdef bint rc with nogil: rc = c_ssh.ssh_is_server_known(self._session) return bool(rc) def copy_options(self, Session destination): cdef int rc with nogil: rc = c_ssh.ssh_options_copy(self._session, &destination._session) return handle_error_codes(rc, self._session) def options_getopt(self): raise NotImplementedError def options_parse_config(self, filepath): cdef bytes b_filepath = to_bytes(filepath) cdef char *c_filepath = b_filepath cdef int rc with nogil: rc = c_ssh.ssh_options_parse_config(self._session, c_filepath) return handle_error_codes(rc, self._session) def options_set_port(self, int port): cdef int rc with nogil: rc = c_ssh.ssh_options_set( self._session, c_ssh.ssh_options_e.SSH_OPTIONS_PORT, &port) return handle_error_codes(rc, self._session) def options_set_gssapi_delegate_credentials(self, bint delegate): """ Set delegating credentials to server on/off. :param delegate: Delegation on/off :type delegate: bool """ with nogil: rc = c_ssh.ssh_options_set( self._session, c_ssh.ssh_options_e.SSH_OPTIONS_GSSAPI_DELEGATE_CREDENTIALS, &delegate) return handle_error_codes(rc, self._session) def options_set(self, Option option, value): """Set an option for session. This function can only be used for string options like host. For numeric options, port etc, use the individual functions. :param option: An SSH option object from one of :py:mod:`ssh.options`. :type option: :py:class:`ssh.options.Option` """ cdef bytes b_value = to_bytes(value) cdef char *c_value cdef int rc c_value = b_value with nogil: rc = c_ssh.ssh_options_set(self._session, option._option, c_value) return handle_error_codes(rc, self._session) def options_get(self, Option option): """Get option value. This function can only be used for string options. For numeric or other options use the individual functions. """ cdef char *_value cdef char **value = NULL cdef int rc cdef bytes b_value with nogil: rc = c_ssh.ssh_options_get( self._session, option._option, value) if rc < 0: raise OptionError _value = value[0] b_value = _value c_ssh.ssh_string_free_char(_value) return to_str(b_value) def options_get_port(self, unsigned int port_target): cdef int rc with nogil: rc = c_ssh.ssh_options_get_port(self._session, &port_target) return handle_error_codes(rc, self._session) def send_ignore(self, bytes data): cdef char *c_data = data cdef int rc with nogil: rc = c_ssh.ssh_send_ignore(self._session, c_data) return handle_error_codes(rc, self._session) def send_debug(self, bytes message, int always_display): cdef char *c_message = message cdef int rc with nogil: rc = c_ssh.ssh_send_debug( self._session, c_message, always_display) return handle_error_codes(rc, self._session) def gssapi_set_creds(self, creds not None): raise NotImplementedError def service_request(self, bytes service): cdef int rc cdef char *c_service = service with nogil: rc = c_ssh.ssh_service_request(self._session, c_service) return handle_error_codes(rc, self._session) # These are also excluded from Windows builds. IF not ON_WINDOWS: def set_agent_channel(self, Channel channel): cdef int rc with nogil: rc = c_ssh.ssh_set_agent_channel( self._session, channel._channel) return handle_error_codes(rc, self._session) def set_agent_socket(self, socket not None): cdef int rc cdef c_ssh.socket_t _sock = PyObject_AsFileDescriptor(socket) with nogil: rc = c_ssh.ssh_set_agent_socket(self._session, _sock) return handle_error_codes(rc, self._session) def set_blocking(self, int blocking): with nogil: c_ssh.ssh_set_blocking(self._session, blocking) def set_counters(self, scounter, rcounter): raise NotImplementedError def set_fd_except(self): with nogil: c_ssh.ssh_set_fd_except(self._session) def set_fd_toread(self): with nogil: c_ssh.ssh_set_fd_toread(self._session) def set_fd_towrite(self): with nogil: c_ssh.ssh_set_fd_towrite(self._session) def silent_disconnect(self): with nogil: c_ssh.ssh_silent_disconnect(self._session) def userauth_none(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_none(self._session, NULL) return handle_auth_error_codes(rc, self._session) def userauth_list(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_list(self._session, NULL) return handle_error_codes(rc, self._session) def userauth_try_publickey(self, SSHKey pubkey not None): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_try_publickey( self._session, NULL, pubkey._key) return handle_auth_error_codes(rc, self._session) def userauth_publickey(self, SSHKey privkey not None): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_publickey( self._session, NULL, privkey._key) return handle_auth_error_codes(rc, self._session) # ssh_userauth_agent is excluded from libssh.h on Windows. IF not ON_WINDOWS: def userauth_agent(self, username not None): cdef bytes b_username = to_bytes(username) cdef char *c_username = b_username cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_agent(self._session, c_username) return handle_auth_error_codes(rc, self._session) def userauth_publickey_auto(self, passphrase not None): cdef bytes b_passphrase = to_bytes(passphrase) cdef char *c_passphrase = b_passphrase cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_publickey_auto( self._session, NULL, c_passphrase) return handle_auth_error_codes(rc, self._session) def userauth_password(self, username not None, password not None): cdef bytes b_username = to_bytes(username) cdef bytes b_password = to_bytes(password) cdef char *c_username = b_username cdef char *c_password = b_password cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_password( self._session, c_username, c_password) return handle_auth_error_codes(rc, self._session) def userauth_kbdint(self, username not None, submethods not None): cdef bytes b_username = to_bytes(username) cdef bytes b_submethods = to_bytes(submethods) cdef char *c_username = b_username cdef char *c_submethods = b_submethods cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_kbdint( self._session, c_username, c_submethods) return handle_auth_error_codes(rc, self._session) def userauth_kbdint_getinstruction(self): cdef bytes b_instruction cdef const_char *_instruction with nogil: _check_connected(self._session) _instruction = c_ssh.ssh_userauth_kbdint_getinstruction( self._session) b_instruction = to_str(<char *>_instruction) return b_instruction def userauth_kbdint_getname(self): cdef bytes b_name cdef const_char *_name with nogil: _check_connected(self._session) _name = c_ssh.ssh_userauth_kbdint_getname(self._session) b_name = to_str(<char *>_name) return b_name def userauth_kbdint_getnprompts(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_kbdint_getnprompts(self._session) return rc def userauth_kbdint_getprompt(self, unsigned int i, bytes echo not None): cdef const_char *_prompt cdef bytes b_prompt cdef char *c_echo = echo with nogil: _check_connected(self._session) _prompt = c_ssh.ssh_userauth_kbdint_getprompt( self._session, i, c_echo) b_prompt = _prompt return b_prompt def userauth_kbdint_getnanswers(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_kbdint_getnanswers(self._session) return rc def userauth_kbdint_getanswer(self, unsigned int i): cdef const_char *_answer cdef bytes b_answer with nogil: _check_connected(self._session) _answer = c_ssh.ssh_userauth_kbdint_getanswer( self._session, i) b_answer = _answer return b_answer def userauth_kbdint_setanswer(self, unsigned int i, bytes answer not None): cdef char *c_answer = answer cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_kbdint_setanswer( self._session, i, <const_char *>(c_answer)) return handle_auth_error_codes(rc, self._session) def userauth_gssapi(self): cdef int rc with nogil: _check_connected(self._session) rc = c_ssh.ssh_userauth_gssapi(self._session) return handle_auth_error_codes(rc, self._session) def write_knownhost(self): cdef int rc with nogil: rc = c_ssh.ssh_write_knownhost(self._session) return handle_error_codes(rc, self._session) def dump_knownhost(self): cdef const_char *_known_host cdef bytes b_known_host with nogil: _known_host = c_ssh.ssh_dump_knownhost(self._session) if _known_host is NULL: return b_known_host = _known_host return b_known_host def get_clientbanner(self): cdef const_char *_banner cdef bytes banner with nogil: _banner = c_ssh.ssh_get_clientbanner(self._session) if _banner is NULL: return banner = _banner return banner def get_serverbanner(self): cdef const_char *_banner cdef bytes banner with nogil: _banner = c_ssh.ssh_get_serverbanner(self._session) if _banner is NULL: return banner = _banner return banner def get_kex_algo(self): cdef const_char *_algo cdef bytes algo with nogil: _algo = c_ssh.ssh_get_kex_algo(self._session) if _algo is NULL: return algo = _algo return algo def get_cipher_in(self): cdef const_char *_cipher cdef bytes cipher with nogil: _cipher = c_ssh.ssh_get_cipher_in(self._session) if _cipher is NULL: return cipher = _cipher return cipher def get_cipher_out(self): cdef const_char *_cipher cdef bytes cipher with nogil: _cipher = c_ssh.ssh_get_cipher_out(self._session) if _cipher is NULL: return cipher = _cipher return cipher def get_hmac_in(self): cdef const_char *_hmac cdef bytes hmac with nogil: _hmac = c_ssh.ssh_get_hmac_in(self._session) if _hmac is NULL: return hmac = _hmac return hmac def get_hmac_out(self): cdef const_char *_hmac cdef bytes hmac with nogil: _hmac = c_ssh.ssh_get_hmac_out(self._session) if _hmac is NULL: return hmac = _hmac return hmac def get_error(self): cdef const_char *error cdef bytes b_error with nogil: error = c_ssh.ssh_get_error(self._session) if error is NULL: return b_error = error return to_str(b_error) def get_error_code(self): cdef int rc with nogil: rc = c_ssh.ssh_get_error_code(self._session) return rc def scp_new(self, int mode, location not None): """Create and initialise SCP channel""" cdef c_ssh.ssh_scp _scp cdef bytes b_location = to_bytes(location) cdef char *c_location = b_location with nogil: _scp = c_ssh.ssh_scp_new(self._session, mode, c_location) if _scp is NULL: with gil: return handle_error_codes( c_ssh.ssh_get_error_code(self._session), self._session) if c_ssh.ssh_scp_init(_scp) != c_ssh.SSH_OK: c_ssh.ssh_scp_free(_scp) with gil: return handle_error_codes( c_ssh.ssh_get_error_code(self._session), self._session) return SCP.from_ptr(_scp, self) |
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