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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46 | # |
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47 | # Support to handle use in a package and as a unit test. |
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48 | # If there is a better way to let us know. |
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49 | # |
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50 | try: |
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51 | from . import tftpy |
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52 | except (ValueError, SystemError): |
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53 | import tftpy |
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54 | |
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55 | class tftp(object): |
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56 | '''RTEMS Testing TFTP base.''' |
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57 | |
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58 | def __init__(self, bsp_arch, bsp, trace = False): |
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59 | self.trace = trace |
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60 | self.lock_trace = False |
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61 | self.lock = threading.RLock() |
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62 | self.bsp = bsp |
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63 | self.bsp_arch = bsp_arch |
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64 | self._init() |
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65 | |
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66 | def __del__(self): |
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67 | self.kill() |
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68 | |
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69 | def _init(self): |
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70 | self.output_length = None |
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71 | self.console = None |
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72 | self.server = None |
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73 | self.port = 0 |
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74 | self.exe = None |
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75 | self.timeout = None |
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76 | self.timer = None |
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77 | self.running = False |
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78 | self.finished = False |
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79 | self.caught = None |
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80 | |
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81 | def _lock(self, msg): |
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82 | if self.lock_trace: |
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83 | print('|[ LOCK:%s ]|' % (msg)) |
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84 | self.lock.acquire() |
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85 | |
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86 | def _unlock(self, msg): |
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87 | if self.lock_trace: |
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88 | print('|] UNLOCK:%s [|' % (msg)) |
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89 | self.lock.release() |
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90 | |
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91 | def _finished(self): |
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92 | self.server = None |
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93 | self.exe = None |
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94 | |
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95 | def _stop(self): |
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96 | try: |
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97 | if self.server: |
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98 | self.server.stop(now = True) |
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99 | except: |
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100 | pass |
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101 | |
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102 | def _kill(self): |
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103 | self._stop() |
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104 | while self.running or not self.finished: |
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105 | self._unlock('_kill') |
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106 | time.sleep(0.1) |
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107 | self._lock('_kill') |
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108 | |
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109 | def _timeout(self): |
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110 | self._stop() |
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111 | if self.timeout is not None: |
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112 | self.timeout() |
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113 | |
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114 | def _exe_handle(self, req_file, raddress, rport): |
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115 | self._lock('_exe_handle') |
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116 | exe = self.exe |
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117 | self.exe = None |
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118 | self._unlock('_exe_handle') |
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119 | if exe is not None: |
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120 | if self.console: |
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121 | self.console('tftp: %s' % (exe)) |
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122 | return open(exe, "rb") |
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123 | self._stop() |
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124 | return None |
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125 | |
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126 | def _listener(self): |
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127 | tftpy.log.setLevel(100) |
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128 | try: |
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129 | self.server = tftpy.TftpServer(tftproot = '.', |
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130 | dyn_file_func = self._exe_handle) |
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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 | if self.server is not None: |
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134 | try: |
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135 | self.server.listen('0.0.0.0', self.port, 0.5) |
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136 | except tftpy.TftpException as te: |
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137 | raise error.general('tftp: %s' % (str(te))) |
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138 | except IOError as ie: |
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139 | if ie.errno == errno.EACCES: |
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140 | raise error.general('tftp: permissions error: check tftp server port') |
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141 | raise error.general('tftp: io error: %s' % (str(ie))) |
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142 | |
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143 | def _runner(self): |
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144 | self._lock('_runner') |
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145 | self.running = True |
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146 | self._unlock('_runner') |
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147 | caught = None |
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148 | try: |
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149 | self._listener() |
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150 | except: |
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151 | caught = sys.exc_info() |
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152 | self._lock('_runner') |
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153 | self._init() |
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154 | self.running = False |
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155 | self.finished = True |
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156 | self.caught = caught |
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157 | self._unlock('_runner') |
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158 | |
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159 | def open(self, executable, port, output_length, console, timeout): |
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160 | self._lock('_open') |
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161 | if self.exe is not None: |
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162 | self._unlock('_open') |
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163 | raise error.general('tftp: already running') |
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164 | self._init() |
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165 | self.output_length = output_length |
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166 | self.console = console |
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167 | self.port = port |
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168 | self.exe = executable |
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169 | self.timeout = timeout[1] |
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170 | self.listener = threading.Thread(target = self._runner, |
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171 | name = 'tftp-listener') |
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172 | self.listener.start() |
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173 | step = 0.5 |
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174 | period = timeout[0] |
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175 | output_len = self.output_length() |
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176 | while not self.finished and period > 0: |
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177 | current_length = self.output_length() |
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178 | if output_length != current_length: |
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179 | period = timeout[0] |
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180 | output_length = current_length |
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181 | if period < step: |
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182 | period = 0 |
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183 | else: |
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184 | period -= step |
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185 | self._unlock('_open') |
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186 | time.sleep(step) |
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187 | self._lock('_open') |
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188 | if not self.finished and period == 0: |
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189 | self._timeout() |
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190 | caught = self.caught |
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191 | self.caught = None |
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192 | self._unlock('_open') |
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193 | if caught is not None: |
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194 | reraise.reraise(*caught) |
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195 | |
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196 | def kill(self): |
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197 | self._lock('kill') |
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198 | self._kill() |
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199 | self._unlock('kill') |
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200 | |
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201 | if __name__ == "__main__": |
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202 | import sys |
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203 | if len(sys.argv) > 1: |
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204 | executable = sys.argv[1] |
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205 | else: |
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206 | executable = None |
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207 | t = tftp('arm', 'beagleboneblack') |
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208 | t.open(executable) |
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