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GeezerVison is showing github.com — ssh-python/ssh/channel.pyx at master · parallel-ssh/ssh-python Expand file tree/ Copy pathchannel.pyxMore file actions 366 lines (319 loc) · 12.3 KB / Copy pathchannel.pyxFile metadata and controls366 lines (319 loc) · 12.3 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 # 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 libc.stdlib cimport malloc, free from libc.string cimport const_char from session cimport Session from utils cimport to_bytes, to_str, handle_error_codes cimport c_ssh cdef class Channel: def __cinit__(self, Session session): self.closed = False self._session = session def __dealloc__(self): if self._channel is not NULL and self._session is not None: c_ssh.ssh_channel_free(self._channel) self._channel = NULL @property def session(self): """Originating session.""" return self._session @staticmethod cdef Channel from_ptr(c_ssh.ssh_channel _chan, Session session): cdef Channel chan = Channel.__new__(Channel, session) chan._channel = _chan return chan def close(self): cdef int rc if self.closed: return 0 with nogil: rc = c_ssh.ssh_channel_close(self._channel) if rc == 0: self.closed = True return handle_error_codes(rc, self._session._session) def get_exit_status(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_get_exit_status(self._channel) return rc def get_session(self): return self.session def is_closed(self): cdef bint rc with nogil: rc = c_ssh.ssh_channel_is_closed(self._channel) return rc != 0 def is_eof(self): cdef bint rc with nogil: rc = c_ssh.ssh_channel_is_eof(self._channel) return bool(rc) def is_open(self): cdef bint rc with nogil: rc = c_ssh.ssh_channel_is_open(self._channel) return bool(rc) def send_eof(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_send_eof(self._channel) return handle_error_codes(rc, self._session._session) def request_auth_agent(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_auth_agent(self._channel) return handle_error_codes(rc, self._session._session) def open_auth_agent(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_open_auth_agent(self._channel) return handle_error_codes(rc, self._session._session) def open_forward(self, remotehost, int remoteport, sourcehost, int sourceport): cdef bytes b_remotehost = to_bytes(remotehost) cdef const_char *c_remotehost = b_remotehost cdef bytes b_sourcehost = to_bytes(sourcehost) cdef const_char *c_sourcehost = b_sourcehost cdef int rc with nogil: rc = c_ssh.ssh_channel_open_forward( self._channel, c_remotehost, remoteport, c_sourcehost, sourceport) return handle_error_codes(rc, self._session._session) def open_session(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_open_session(self._channel) return handle_error_codes(rc, self._session._session) def open_x11(self, sourcehost, int sourceport): cdef bytes b_sourcehost = to_bytes(sourcehost) cdef const_char *c_sourcehost = b_sourcehost cdef int rc with nogil: rc = c_ssh.ssh_channel_open_x11( self._channel, c_sourcehost, sourceport) return handle_error_codes(rc, self._session._session) def accept_x11(self, int timeout_ms): cdef Channel chan cdef c_ssh.ssh_channel _chan = NULL with nogil: _chan = c_ssh.ssh_channel_accept_x11(self._channel, timeout_ms) if _chan is NULL: raise MemoryError chan = Channel.from_ptr(_chan, self._session) return chan def poll(self, bint is_stderr=False): cdef int rc with nogil: rc = c_ssh.ssh_channel_poll(self._channel, is_stderr) return handle_error_codes(rc, self._session._session) def poll_timeout(self, int timeout, bint is_stderr=False): cdef int rc with nogil: rc = c_ssh.ssh_channel_poll_timeout( self._channel, timeout, is_stderr) return handle_error_codes(rc, self._session._session) def read(self, c_ssh.uint32_t size=1024*1024, bint is_stderr=False): cdef int rc cdef bytes buf = b'' cdef char* cbuf with nogil: cbuf = <char *>malloc(sizeof(char)*size) if cbuf is NULL: with gil: raise MemoryError rc = c_ssh.ssh_channel_read(self._channel, cbuf, size, is_stderr) try: if rc > 0: buf = cbuf[:rc] finally: free(cbuf) return handle_error_codes(rc, self._session._session), buf def read_nonblocking(self, c_ssh.uint32_t size=1024*1024, bint is_stderr=False): cdef int rc cdef bytes buf = b'' cdef char* cbuf with nogil: cbuf = <char *>malloc(sizeof(char)*size) if cbuf is NULL: with gil: raise MemoryError rc = c_ssh.ssh_channel_read_nonblocking( self._channel, cbuf, size, is_stderr) try: if rc > 0: buf = cbuf[:rc] finally: free(cbuf) return handle_error_codes(rc, self._session._session), buf def read_timeout(self, int timeout, c_ssh.uint32_t size=1024*1024, bint is_stderr=False): cdef int rc cdef bytes buf = b'' cdef char* cbuf with nogil: cbuf = <char *>malloc(sizeof(char)*size) if cbuf is NULL: with gil: raise MemoryError rc = c_ssh.ssh_channel_read_timeout( self._channel, cbuf, size, is_stderr, timeout) try: if rc > 0: buf = cbuf[:rc] finally: free(cbuf) return handle_error_codes(rc, self._session._session), buf def request_env(self, name, value): cdef bytes b_name = to_bytes(name) cdef const_char *c_name = b_name cdef bytes b_value = to_bytes(value) cdef const_char *c_value = b_value cdef int rc with nogil: rc = c_ssh.ssh_channel_request_env(self._channel, c_name, c_value) return handle_error_codes(rc, self._session._session) def request_exec(self, cmd): cdef bytes b_cmd = to_bytes(cmd) cdef const_char *c_cmd = b_cmd cdef int rc with nogil: rc = c_ssh.ssh_channel_request_exec(self._channel, c_cmd) return handle_error_codes(rc, self._session._session) def request_pty(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_pty(self._channel) return handle_error_codes(rc, self._session._session) def change_pty_size(self, int cols, int rows): cdef int rc with nogil: rc = c_ssh.ssh_channel_change_pty_size(self._channel, cols, rows) return handle_error_codes(rc, self._session._session) def request_pty_size(self, terminal, int col, int row): cdef bytes b_terminal = to_bytes(terminal) cdef const_char *c_terminal = b_terminal cdef int rc with nogil: rc = c_ssh.ssh_channel_request_pty_size( self._channel, c_terminal, col, row) return handle_error_codes(rc, self._session._session) def request_send_signal(self, sig): cdef bytes b_sig = to_bytes(sig) cdef const_char *c_sig = b_sig cdef int rc with nogil: rc = c_ssh.ssh_channel_request_send_signal( self._channel, c_sig) return handle_error_codes(rc, self._session._session) def request_send_break(self, c_ssh.uint32_t length): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_send_break( self._channel, length) return handle_error_codes(rc, self._session._session) def request_shell(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_shell(self._channel) return handle_error_codes(rc, self._session._session) def request_sftp(self): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_sftp(self._channel) return handle_error_codes(rc, self._session._session) def request_subsystem(self, subsystem): cdef bytes b_sys = to_bytes(subsystem) cdef const_char *c_sys = b_sys cdef int rc with nogil: rc = c_ssh.ssh_channel_request_subsystem( self._channel, c_sys) return handle_error_codes(rc, self._session._session) def request_x11(self, int screen_number, bint single_connection=True): cdef int rc with nogil: rc = c_ssh.ssh_channel_request_x11( self._channel, single_connection, NULL, NULL, screen_number) return handle_error_codes(rc, self._session._session) def set_blocking(self, bint blocking): with nogil: c_ssh.ssh_channel_set_blocking(self._channel, blocking) def set_counter(self, counter): raise NotImplementedError def write(self, data not None): """Write data to stdin on channel. :param data: Data to write. :type data: str or bytes :returns: Return code and bytes written tuples. :rtype: (int, int) """ cdef bytes b_buf = to_bytes(data) cdef const char *_buf = b_buf cdef c_ssh.uint32_t buf_remainder = len(b_buf) cdef c_ssh.uint32_t buf_tot_size = buf_remainder cdef c_ssh.uint32_t bytes_written = 0 cdef int rc with nogil: while buf_remainder > 0: rc = c_ssh.ssh_channel_write( self._channel, _buf, buf_remainder) if rc < 0 and rc != c_ssh.SSH_AGAIN: with gil: return handle_error_codes( rc, self._session._session) elif rc == c_ssh.SSH_AGAIN: break _buf += rc buf_remainder -= rc bytes_written = buf_tot_size - buf_remainder return rc, bytes_written def write_stderr(self, data not None): """Write data to stderr. :param data: Data to write. :type data: str or bytes :returns: Return code and bytes written tuples. :rtype: (int, int) """ cdef bytes b_buf = to_bytes(data) cdef const char *_buf = b_buf cdef c_ssh.uint32_t buf_remainder = len(b_buf) cdef c_ssh.uint32_t buf_tot_size = buf_remainder cdef c_ssh.uint32_t bytes_written = 0 cdef int rc with nogil: while buf_remainder > 0: rc = c_ssh.ssh_channel_write_stderr( self._channel, _buf, buf_remainder) if rc < 0 and rc != c_ssh.SSH_AGAIN: with gil: return handle_error_codes( rc, self._session._session) elif rc == c_ssh.SSH_AGAIN: break _buf += rc buf_remainder -= rc bytes_written = buf_tot_size - buf_remainder return rc, bytes_written def window_size(self): cdef c_ssh.uint32_t size with nogil: size = c_ssh.ssh_channel_window_size(self._channel) return size def select(self, channels not None, outchannels not None, maxfd, readfds, timeout=None): raise NotImplementedError |
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