[3a867a4] | 1 | # |
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| 2 | # RTEMS Tools Project (http://www.rtems.org/) |
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| 3 | # Copyright 2013-2017 Chris Johns (chrisj@rtems.org) |
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| 4 | # All rights reserved. |
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| 5 | # |
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| 6 | # This file is part of the RTEMS Tools package in 'rtems-tools'. |
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| 7 | # |
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| 8 | # Redistribution and use in source and binary forms, with or without |
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| 9 | # modification, are permitted provided that the following conditions are met: |
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| 10 | # |
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| 11 | # 1. Redistributions of source code must retain the above copyright notice, |
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| 12 | # this list of conditions and the following disclaimer. |
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| 13 | # |
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| 14 | # 2. Redistributions in binary form must reproduce the above copyright notice, |
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| 15 | # this list of conditions and the following disclaimer in the documentation |
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| 16 | # and/or other materials provided with the distribution. |
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| 17 | # |
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| 18 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 19 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 20 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 21 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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| 22 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 23 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 24 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 25 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 26 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 27 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 28 | # POSSIBILITY OF SUCH DAMAGE. |
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| 29 | # |
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| 30 | |
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| 31 | # |
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| 32 | # RTEMS Testing TFTP Interface |
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| 33 | # |
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| 34 | |
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| 35 | from __future__ import print_function |
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| 36 | |
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| 37 | import errno |
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| 38 | import logging |
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| 39 | import threading |
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| 40 | import time |
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| 41 | import sys |
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| 42 | |
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| 43 | from rtemstoolkit import error |
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| 44 | from rtemstoolkit import reraise |
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| 45 | |
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[e058db0] | 46 | import tftpy |
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[3a867a4] | 47 | |
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| 48 | class tftp(object): |
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| 49 | '''RTEMS Testing TFTP base.''' |
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| 50 | |
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| 51 | def __init__(self, bsp_arch, bsp, trace = False): |
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| 52 | self.trace = trace |
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| 53 | self.lock_trace = False |
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| 54 | self.lock = threading.RLock() |
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| 55 | self.bsp = bsp |
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| 56 | self.bsp_arch = bsp_arch |
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| 57 | self._init() |
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| 58 | |
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| 59 | def __del__(self): |
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| 60 | self.kill() |
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| 61 | |
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| 62 | def _init(self): |
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| 63 | self.output_length = None |
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| 64 | self.console = None |
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| 65 | self.server = None |
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| 66 | self.port = 0 |
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| 67 | self.exe = None |
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| 68 | self.timeout = None |
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| 69 | self.timer = None |
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| 70 | self.running = False |
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| 71 | self.finished = False |
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| 72 | self.caught = None |
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| 73 | |
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| 74 | def _lock(self, msg): |
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| 75 | if self.lock_trace: |
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| 76 | print('|[ LOCK:%s ]|' % (msg)) |
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| 77 | self.lock.acquire() |
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| 78 | |
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| 79 | def _unlock(self, msg): |
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| 80 | if self.lock_trace: |
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| 81 | print('|] UNLOCK:%s [|' % (msg)) |
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| 82 | self.lock.release() |
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| 83 | |
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| 84 | def _finished(self): |
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| 85 | self.server = None |
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| 86 | self.exe = None |
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| 87 | |
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| 88 | def _stop(self): |
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| 89 | try: |
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| 90 | if self.server: |
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| 91 | self.server.stop(now = True) |
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| 92 | except: |
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| 93 | pass |
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| 94 | |
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| 95 | def _kill(self): |
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| 96 | self._stop() |
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| 97 | while self.running or not self.finished: |
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| 98 | self._unlock('_kill') |
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| 99 | time.sleep(0.1) |
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| 100 | self._lock('_kill') |
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| 101 | |
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| 102 | def _timeout(self): |
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| 103 | self._stop() |
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| 104 | if self.timeout is not None: |
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| 105 | self.timeout() |
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| 106 | |
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| 107 | def _exe_handle(self, req_file, raddress, rport): |
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| 108 | self._lock('_exe_handle') |
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| 109 | exe = self.exe |
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| 110 | self.exe = None |
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| 111 | self._unlock('_exe_handle') |
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| 112 | if exe is not None: |
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| 113 | if self.console: |
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| 114 | self.console('tftp: %s' % (exe)) |
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| 115 | return open(exe, "rb") |
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[4b76b8e] | 116 | if self.console: |
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| 117 | self.console('tftp: re-requesting exe; target must have reset') |
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[3a867a4] | 118 | self._stop() |
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| 119 | return None |
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| 120 | |
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| 121 | def _listener(self): |
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| 122 | tftpy.log.setLevel(100) |
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| 123 | try: |
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| 124 | self.server = tftpy.TftpServer(tftproot = '.', |
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| 125 | dyn_file_func = self._exe_handle) |
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| 126 | except tftpy.TftpException as te: |
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| 127 | raise error.general('tftp: %s' % (str(te))) |
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| 128 | if self.server is not None: |
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| 129 | try: |
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| 130 | self.server.listen('0.0.0.0', self.port, 0.5) |
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| 131 | except tftpy.TftpException as te: |
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| 132 | raise error.general('tftp: %s' % (str(te))) |
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| 133 | except IOError as ie: |
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| 134 | if ie.errno == errno.EACCES: |
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| 135 | raise error.general('tftp: permissions error: check tftp server port') |
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| 136 | raise error.general('tftp: io error: %s' % (str(ie))) |
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| 137 | |
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| 138 | def _runner(self): |
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| 139 | self._lock('_runner') |
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| 140 | self.running = True |
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| 141 | self._unlock('_runner') |
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| 142 | caught = None |
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| 143 | try: |
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| 144 | self._listener() |
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| 145 | except: |
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| 146 | caught = sys.exc_info() |
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| 147 | self._lock('_runner') |
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| 148 | self._init() |
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| 149 | self.running = False |
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| 150 | self.finished = True |
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| 151 | self.caught = caught |
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| 152 | self._unlock('_runner') |
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| 153 | |
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| 154 | def open(self, executable, port, output_length, console, timeout): |
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| 155 | self._lock('_open') |
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| 156 | if self.exe is not None: |
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| 157 | self._unlock('_open') |
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| 158 | raise error.general('tftp: already running') |
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| 159 | self._init() |
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| 160 | self.output_length = output_length |
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| 161 | self.console = console |
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| 162 | self.port = port |
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| 163 | self.exe = executable |
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| 164 | self.timeout = timeout[1] |
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| 165 | self.listener = threading.Thread(target = self._runner, |
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| 166 | name = 'tftp-listener') |
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| 167 | self.listener.start() |
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[3ed65c0] | 168 | step = 0.5 |
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[3a867a4] | 169 | period = timeout[0] |
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| 170 | output_len = self.output_length() |
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| 171 | while not self.finished and period > 0: |
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| 172 | current_length = self.output_length() |
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| 173 | if output_length != current_length: |
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| 174 | period = timeout[0] |
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| 175 | output_length = current_length |
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| 176 | if period < step: |
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| 177 | period = 0 |
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| 178 | else: |
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| 179 | period -= step |
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| 180 | self._unlock('_open') |
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| 181 | time.sleep(step) |
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| 182 | self._lock('_open') |
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| 183 | if not self.finished and period == 0: |
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| 184 | self._timeout() |
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| 185 | caught = self.caught |
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| 186 | self.caught = None |
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| 187 | self._unlock('_open') |
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| 188 | if caught is not None: |
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| 189 | reraise.reraise(*caught) |
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| 190 | |
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| 191 | def kill(self): |
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| 192 | self._lock('kill') |
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| 193 | self._kill() |
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| 194 | self._unlock('kill') |
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| 195 | |
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| 196 | if __name__ == "__main__": |
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| 197 | import sys |
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| 198 | if len(sys.argv) > 1: |
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| 199 | executable = sys.argv[1] |
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| 200 | else: |
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| 201 | executable = None |
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| 202 | t = tftp('arm', 'beagleboneblack') |
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| 203 | t.open(executable) |
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