| 1 | #!/usr/bin/env python |
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| 2 | # -*- coding: iso-8859-1 -*- |
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| 3 | # vim:tabstop=4:softtabstop=4:shiftwidth=4:expandtab:filetype=python: |
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| 4 | # ----------------------------------------------------------------------- |
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| 5 | # freevo - the main entry point to the whole suite of applications |
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| 6 | # ----------------------------------------------------------------------- |
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| 7 | # $Id$ |
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| 8 | # |
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| 9 | # Notes: This is a rewrite of the old shell script in Python |
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| 10 | # Todo: |
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| 11 | # |
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| 12 | # ----------------------------------------------------------------------- |
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| 13 | # Freevo - A Home Theater PC framework |
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| 14 | # Copyright (C) 2003 Krister Lagerstrom, et al. |
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| 15 | # Please see the file freevo/Docs/CREDITS for a complete list of authors. |
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| 16 | # |
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| 17 | # This program is free software; you can redistribute it and/or modify |
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| 18 | # it under the terms of the GNU General Public License as published by |
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| 19 | # the Free Software Foundation; either version 2 of the License, or |
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| 20 | # (at your option) any later version. |
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| 21 | # |
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| 22 | # This program is distributed in the hope that it will be useful, but |
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| 23 | # WITHOUT ANY WARRANTY; without even the implied warranty of MER- |
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| 24 | # CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
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| 25 | # Public License for more details. |
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| 26 | # |
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| 27 | # You should have received a copy of the GNU General Public License along |
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| 28 | # with this program; if not, write to the Free Software Foundation, Inc., |
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| 29 | # 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 30 | # |
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| 31 | # ----------------------------------------------------------------------- |
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| 32 | |
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| 33 | import os |
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| 34 | import sys |
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| 35 | import time |
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| 36 | import popen2 |
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| 37 | |
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| 38 | from stat import * |
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| 39 | from signal import * |
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| 40 | |
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| 41 | |
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| 42 | cmdfile = None |
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| 43 | def _debug_(message, level=1): |
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| 44 | global debug |
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| 45 | if debug >= level: |
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| 46 | print message |
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| 47 | |
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| 48 | |
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| 49 | def _gdb_script_(message): |
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| 50 | global debug |
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| 51 | global cmdfile |
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| 52 | if debug < 1: |
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| 53 | return |
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| 54 | print >>cmdfile, message |
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| 55 | |
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| 56 | |
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| 57 | def show_help(): |
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| 58 | """ |
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| 59 | show how to use this script |
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| 60 | """ |
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| 61 | helper_list = '' |
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| 62 | for helper in os.listdir(os.environ['FREEVO_HELPERS']): |
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| 63 | if helper.endswith('.py') and not helper == '__init__.py': |
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| 64 | helper_list += ' ' + helper[:-3] + '\n' |
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| 65 | |
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| 66 | print '''\ |
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| 67 | freevo [ script | options] |
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| 68 | options: |
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| 69 | -fs start freevo in a new x session in full-screen |
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| 70 | --doc create api documentation (for developers) |
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| 71 | --trace activate full trace (useful for debugging) |
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| 72 | --profile activate cProfile and write stats to /tmp |
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| 73 | setup run freevo setup to scan your environment |
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| 74 | start start freevo as daemon in background |
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| 75 | stop stop the current freevo process |
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| 76 | |
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| 77 | freevo can start the following scripts, use --help on these |
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| 78 | scripts to get more informations about options. |
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| 79 | |
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| 80 | %s |
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| 81 | |
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| 82 | Example: freevo imdb --help" |
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| 83 | freevo webserver start" |
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| 84 | |
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| 85 | You can also create a symbolic link to freevo with the name of the |
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| 86 | script you want to execute. E.g. put a link imdb pointing to freevo |
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| 87 | in your path to access the imdb helper script |
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| 88 | |
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| 89 | Example: ln -s /path/to/freevo imdb |
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| 90 | imdb --help |
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| 91 | |
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| 92 | Before running freevo the first time, you need to run \'freevo setup\' |
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| 93 | After that, you can run freevo without parameter. |
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| 94 | ''' % helper_list |
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| 95 | sys.exit(0) |
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| 96 | |
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| 97 | |
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| 98 | def get_python(check_freevo): |
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| 99 | """ |
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| 100 | get the newest version of python [ with freevo installed ] |
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| 101 | """ |
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| 102 | _debug_('version=%r' % (sys.version)) |
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| 103 | if sys.hexversion >= 0x02040000: |
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| 104 | # python seems to be ok |
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| 105 | search = ('python', 'python2') |
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| 106 | elif sys.hexversion >= 0x02030000: |
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| 107 | # try python2.4, else take python |
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| 108 | search = ('python2.4', 'python') |
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| 109 | else: |
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| 110 | # python is too old, try to find python2.4 or python2 |
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| 111 | search = ('python2.4', 'python2') |
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| 112 | |
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| 113 | for python in search: |
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| 114 | for path in os.environ['PATH'].split(':'): |
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| 115 | if os.path.isfile(os.path.join(path, python)): |
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| 116 | # we found the binary for python |
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| 117 | if not check_freevo: |
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| 118 | # return if we don't check for an installed version |
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| 119 | # of freevo |
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| 120 | _debug_('python=%r' % (python)) |
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| 121 | return python |
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| 122 | |
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| 123 | # try to import freevo with this python and get |
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| 124 | # the path |
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| 125 | cmd = '%s -c "import freevo; print freevo.__path__[0]"' % python |
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| 126 | child = popen2.Popen4(cmd) |
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| 127 | while 1: |
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| 128 | data = child.fromchild.readline() |
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| 129 | if not data: |
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| 130 | break |
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| 131 | if os.path.isdir(data[:-1]): |
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| 132 | # ok, found it, close child and return |
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| 133 | child.wait() |
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| 134 | child.fromchild.close() |
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| 135 | if child.childerr: |
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| 136 | child.childerr.close() |
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| 137 | child.tochild.close() |
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| 138 | _debug_('python=%r data=%r' % (python, data[:-1])) |
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| 139 | return python, data[:-1] |
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| 140 | |
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| 141 | child.wait() |
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| 142 | child.fromchild.close() |
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| 143 | if child.childerr: |
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| 144 | child.childerr.close() |
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| 145 | child.tochild.close() |
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| 146 | |
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| 147 | # nothing found? That's bad! |
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| 148 | if check_freevo: |
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| 149 | _debug_('python=%r data=%r' % (None, None)) |
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| 150 | return None, None |
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| 151 | return None |
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| 152 | |
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| 153 | |
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| 154 | def getpid(name, arg): |
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| 155 | """ |
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| 156 | get pid of running 'name' |
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| 157 | """ |
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| 158 | _debug_('getpid(name=%r, arg=%r)' % (name, arg)) |
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| 159 | for fname in ('/var/run/' + name + '-%s.pid' % os.getuid(), |
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| 160 | '/tmp/' + name + '-%s.pid' % os.getuid()): |
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| 161 | if os.path.isfile(fname): |
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| 162 | f = open(fname) |
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| 163 | try: |
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| 164 | pid = int(f.readline()[:-1]) |
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| 165 | except ValueError: |
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| 166 | # file does not contain a number |
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| 167 | _debug_('fname=%r pid=%r' % (fname, 0)) |
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| 168 | return fname, 0 |
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| 169 | f.close() |
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| 170 | |
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| 171 | proc = '/proc/' + str(pid) + '/cmdline' |
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| 172 | # FIXME: BSD support missing here |
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| 173 | try: |
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| 174 | if os.path.isfile(proc): |
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| 175 | f = open(proc) |
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| 176 | proc_arg = f.readline().split('\0')[:-1] |
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| 177 | f.close() |
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| 178 | else: |
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| 179 | # process not running |
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| 180 | _debug_('fname=%r pid=%r' % (fname, 0)) |
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| 181 | return fname, 0 |
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| 182 | |
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| 183 | except (OSError, IOError): |
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| 184 | # running, but not freevo (because not mine) |
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| 185 | _debug_('fname=%r pid=%r' % (fname, 0)) |
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| 186 | return fname, 0 |
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| 187 | |
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| 188 | if '-OO' in proc_arg: |
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| 189 | proc_arg.remove('-OO') |
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| 190 | |
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| 191 | if proc_arg and ((arg[0].find('runapp') == -1 and \ |
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| 192 | len(proc_arg)>2 and arg[1] != proc_arg[1]) or \ |
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| 193 | len(proc_arg)>3 and arg[2] != proc_arg[2]): |
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| 194 | # different proc I guess |
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| 195 | try: |
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| 196 | os.unlink(fname) |
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| 197 | except OSError: |
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| 198 | pass |
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| 199 | _debug_('fname=%r pid=%r' % (fname, 0)) |
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| 200 | return fname, 0 |
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| 201 | _debug_('fname=%r pid=%r' % (fname, pid)) |
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| 202 | return fname, pid |
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| 203 | _debug_('fname=%r pid=%r' % (fname, 0)) |
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| 204 | return fname, 0 |
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| 205 | |
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| 206 | |
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| 207 | def stop(name, arg): |
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| 208 | """ |
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| 209 | stop running process 'name' |
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| 210 | """ |
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| 211 | fname, pid = getpid(name, arg) |
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| 212 | if not pid: |
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| 213 | _debug_('cannot kill %r no pid' % (name)) |
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| 214 | return 0 |
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| 215 | try: |
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| 216 | for signal in (SIGINT, SIGTERM, SIGKILL): |
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| 217 | try: |
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| 218 | _debug_('trying to kill %r pid=%r with signal=%r' % (name, pid, signal)) |
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| 219 | os.kill(pid, signal) |
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| 220 | for i in range(10): |
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| 221 | if getpid(name, arg)[1] == 0: |
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| 222 | _debug_('killed %r pid=%r with signal=%r (%r)' % (name, pid, signal, i)) |
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| 223 | break |
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| 224 | time.sleep(0.1) |
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| 225 | |
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| 226 | except OSError, e: |
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| 227 | _debug_('kill(pid=%r signal=%r): %s' % (pid, signal, e)) |
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| 228 | pass |
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| 229 | if getpid(name, arg)[1] == 0: |
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| 230 | return 1 |
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| 231 | return 0 |
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| 232 | finally: |
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| 233 | try: |
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| 234 | os.unlink(fname) |
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| 235 | _debug_('%s removed' % (fname)) |
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| 236 | except OSError, e: |
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| 237 | _debug_('%s NOT removed' % (fname)) |
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| 238 | |
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| 239 | |
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| 240 | def start(name, arg, bg, store=1): |
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| 241 | """ |
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| 242 | start a process |
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| 243 | """ |
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| 244 | global cmdfile, debug |
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| 245 | _debug_('start(name=%r, arg=%r, bg=%r, store=%r)' % (name, arg, bg, store)) |
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| 246 | if debug >= 2: |
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| 247 | _gdb_script_('cat > freevo-gdb << _END_') |
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| 248 | _gdb_script_('b main') |
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| 249 | _gdb_script_('r %s' % ' '.join(arg[1:])) |
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| 250 | _gdb_script_('_END_') |
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| 251 | _gdb_script_('gdb -x freevo-gdb %s' % (arg[0])) |
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| 252 | elif debug >= 1: |
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| 253 | _gdb_script_('%s -m pdb src/main.py' % (arg[0])) |
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| 254 | if cmdfile: |
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| 255 | cmdfile.close() |
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| 256 | os.chmod(cmdfile.name, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) |
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| 257 | |
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| 258 | pid = os.fork() |
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| 259 | if pid: |
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| 260 | if store: |
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| 261 | try: |
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| 262 | f = open('/var/run/' + name + '-%s.pid' % os.getuid(), 'w') |
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| 263 | except (OSError, IOError): |
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| 264 | f = open('/tmp/' + name + '-%s.pid' % os.getuid(), 'w') |
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| 265 | |
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| 266 | f.write(str(pid)+'\n') |
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| 267 | f.close() |
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| 268 | |
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| 269 | if not bg: |
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| 270 | try: |
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| 271 | os.waitpid(pid, 0) |
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| 272 | except KeyboardInterrupt: |
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| 273 | os.kill(pid, SIGTERM) |
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| 274 | try: |
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| 275 | os.waitpid(pid, 0) |
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| 276 | except KeyboardInterrupt: |
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| 277 | pass |
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| 278 | if store and os.path.isfile(f.name): |
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| 279 | os.unlink(f.name) |
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| 280 | else: |
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| 281 | os.execvp(arg[0], arg) |
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| 282 | |
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| 283 | #-------------------------------------------------------------------------------- |
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| 284 | # Main block |
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| 285 | #-------------------------------------------------------------------------------- |
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| 286 | debug = 0 |
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| 287 | while '--debug' in sys.argv or '-d' in sys.argv: |
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| 288 | debug += 1 |
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| 289 | if '--debug' in sys.argv: |
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| 290 | sys.argv.remove('--debug') |
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| 291 | else: |
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| 292 | sys.argv.remove('-d') |
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| 293 | if debug >= 2: |
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| 294 | cmdfile = open('freevo-gdb.sh', 'w') |
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| 295 | print >>cmdfile,'#!/bin/bash' |
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| 296 | elif debug >= 1: |
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| 297 | cmdfile = open('freevo-pdb.sh', 'w') |
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| 298 | print >>cmdfile,'#!/bin/bash' |
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| 299 | |
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| 300 | freevo_script = os.path.abspath(sys.argv[0]) |
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| 301 | if os.path.islink(freevo_script): |
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| 302 | freevo_script = os.readlink(freevo_script) |
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| 303 | |
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| 304 | if os.path.isdir(os.path.join(os.path.dirname(freevo_script), 'src/plugins')): |
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| 305 | # |
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| 306 | # we start freevo from a directory |
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| 307 | # |
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| 308 | dname = os.path.dirname(freevo_script) |
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| 309 | freevo_python = os.path.join(dname, 'src') |
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| 310 | freevo_helpers = os.path.join(dname, 'src/helpers') |
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| 311 | freevo_locale = os.path.join(dname, 'i18n') |
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| 312 | freevo_share = os.path.join(dname, 'share') |
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| 313 | freevo_contrib = os.path.join(dname, 'contrib') |
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| 314 | freevo_config = os.path.join(dname, 'freevo_config.py') |
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| 315 | |
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| 316 | if os.path.isfile(os.path.join(dname, 'runtime/runapp')): |
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| 317 | # |
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| 318 | # there is a runtime, use it |
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| 319 | # |
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| 320 | runapp = os.path.join(dname, './runtime/runapp') |
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| 321 | python = [ runapp, os.path.join(dname, './runtime/apps/freevo_python') ] |
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| 322 | preload = '' |
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| 323 | f = open(os.path.join(dname, './runtime/preloads')) |
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| 324 | for lib in f.readline()[:-1].split(' '): |
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| 325 | preload += os.path.join(dname, lib) + ':' |
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| 326 | if preload: |
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| 327 | preload = preload[:-1] |
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| 328 | os.environ['FREEVO_PRELOADS'] = preload |
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| 329 | # FIXME: use FREEVO_PRELOADS in runapp to avoid chdirs |
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| 330 | |
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| 331 | else: |
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| 332 | # |
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| 333 | # no runtime, get best python version |
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| 334 | # |
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| 335 | python = get_python(0) |
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| 336 | if not python: |
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| 337 | print 'Can\'t find python >= 2.4' |
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| 338 | sys.exit(0) |
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| 339 | python = [ python ] |
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| 340 | runapp = '' |
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| 341 | else: |
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| 342 | # |
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| 343 | # installed version of freevo, get best python + freevo path |
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| 344 | # |
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| 345 | if not os.path.isfile(freevo_script): |
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| 346 | for path in os.environ['PATH'].split(':'): |
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| 347 | if os.path.isfile(os.path.join(path, freevo_script)): |
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| 348 | freevo_script = os.path.join(path, freevo_script) |
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| 349 | python, freevo_python = get_python(1) |
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| 350 | if not python: |
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| 351 | print 'can\'t find python version with installed freevo' |
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| 352 | sys.exit(0) |
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| 353 | freevo_helpers = os.path.join(freevo_python, 'helpers') |
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| 354 | dname = os.path.abspath(os.path.join(os.path.dirname(freevo_script), '../')) |
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| 355 | freevo_locale = os.path.join(dname, 'share/locale') |
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| 356 | freevo_share = os.path.join(dname, 'share/freevo') |
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| 357 | freevo_contrib = os.path.join(freevo_share, 'contrib') |
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| 358 | freevo_config = os.path.join(freevo_share, 'freevo_config.py') |
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| 359 | runapp = '' |
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| 360 | python = [ python ] |
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| 361 | |
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| 362 | # add the variables from above into environ so Freevo can use them, too |
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| 363 | for var in ('runapp', 'freevo_script', 'freevo_python', 'freevo_locale', |
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| 364 | 'freevo_share', 'freevo_contrib', 'freevo_config', 'freevo_helpers'): |
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| 365 | os.environ[var.upper()] = eval(var) |
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| 366 | _debug_('%s=%r' % (var.upper(), os.environ[var.upper()])) |
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| 367 | _gdb_script_('export %s=%s' % (var.upper(), os.environ[var.upper()])) |
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| 368 | |
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| 369 | # extend PYTHONPATH to freevo |
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| 370 | if os.environ.has_key('PYTHONPATH'): |
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| 371 | os.environ['PYTHONPATH'] = '%s:%s' % (freevo_python, os.environ['PYTHONPATH']) |
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| 372 | else: |
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| 373 | os.environ['PYTHONPATH'] = freevo_python |
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| 374 | _debug_('%s=%r' % ('PYTHONPATH', os.environ['PYTHONPATH'])) |
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| 375 | _gdb_script_('export %s=%s' % ('PYTHONPATH', os.environ['PYTHONPATH'])) |
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| 376 | |
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| 377 | |
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| 378 | # extend PATH to make sure the basics are there |
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| 379 | os.environ['PATH'] = '%s:/usr/bin:/bin:/usr/local/bin:' % os.environ['PATH'] + \ |
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| 380 | '/usr/X11R6/bin/:/sbin:/usr/sbin' |
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| 381 | _debug_('%s=%r' % ('PATH', os.environ['PATH'])) |
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| 382 | _gdb_script_('export %s=%s' % ('PATH', os.environ['PATH'])) |
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| 383 | |
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| 384 | # set basic env variables |
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| 385 | if not os.environ.has_key('HOME') or not os.environ['HOME']: |
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| 386 | os.environ['HOME'] = '/root' |
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| 387 | if not os.environ.has_key('USER') or not os.environ['USER']: |
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| 388 | os.environ['USER'] = 'root' |
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| 389 | _debug_('%s=%r' % ('USER', os.environ['USER'])) |
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| 390 | _debug_('%s=%r' % ('HOME', os.environ['HOME'])) |
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| 391 | |
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| 392 | # now check what and how we should start freevo |
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| 393 | bg = 0 # start in background |
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| 394 | proc = [ os.path.abspath(os.path.join(freevo_python, 'main.py')) ] |
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| 395 | name = os.path.splitext(os.path.basename(os.path.abspath(sys.argv[0])))[0] |
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| 396 | check = 1 # check running instance |
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| 397 | profile = 0 |
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| 398 | |
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| 399 | if '--profile' in sys.argv or '-p' in sys.argv: |
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| 400 | profile = 1 |
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| 401 | if '--profile' in sys.argv: |
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| 402 | sys.argv.remove('--profile') |
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| 403 | else: |
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| 404 | sys.argv.remove('-p') |
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| 405 | |
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| 406 | if len(sys.argv) > 1: |
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| 407 | arg = sys.argv[1] |
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| 408 | else: |
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| 409 | arg = '' |
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| 410 | |
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| 411 | # check the args |
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| 412 | |
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| 413 | if arg in ('--help', '-h'): |
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| 414 | # show help |
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| 415 | show_help() |
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| 416 | |
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| 417 | if arg == 'stop': |
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| 418 | # stop running freevo |
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| 419 | if not stop(name, python + proc): |
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| 420 | print 'freevo not running' |
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| 421 | sys.exit(0) |
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| 422 | |
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| 423 | elif arg == 'start': |
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| 424 | # start freevo in background |
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| 425 | sys.argv = [ sys.argv[0] ] |
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| 426 | bg = 1 |
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| 427 | |
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| 428 | elif arg == '-fs': |
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| 429 | # start X server and run freevo, ignore everything else for now |
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| 430 | server_num = 0 |
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| 431 | while 1: |
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| 432 | if not os.path.exists('/tmp/.X11-unix/X' + str(server_num)): |
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| 433 | break |
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| 434 | server_num += 1 |
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| 435 | sys.stdin.close() |
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| 436 | os.execvp('xinit', [ 'xinit', freevo_script, '--force-fs', '--', ':'+str(server_num) ] + sys.argv[2:]) |
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| 437 | |
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| 438 | elif arg == 'execute': |
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| 439 | # execute a python script |
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| 440 | proc = sys.argv[2:] |
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| 441 | check = 0 |
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| 442 | |
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| 443 | elif arg == 'setup': |
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| 444 | # run setup |
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| 445 | proc = [ os.path.join(freevo_python, 'setup_freevo.py') ] + sys.argv[2:] |
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| 446 | |
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| 447 | elif arg == 'prompt': |
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| 448 | # only run python inside the freevo env |
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| 449 | proc = [] |
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| 450 | profile = 0 |
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| 451 | check = 0 |
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| 452 | |
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| 453 | elif arg == 'runapp': |
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| 454 | # Oops, runapp. We don't start python, we start sys.argv[1] |
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| 455 | # with the rest as args |
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| 456 | python[-1] = sys.argv[2] |
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| 457 | proc = sys.argv[3:] |
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| 458 | check = 0 |
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| 459 | |
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| 460 | elif arg and name == 'freevo' and not arg.startswith('-'): |
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| 461 | # start a helper. arg is the name of the script in |
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| 462 | # the helpers directory |
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| 463 | name = arg |
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| 464 | proc = [ os.path.join(freevo_python, 'helpers', name + '.py') ] |
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| 465 | if len(sys.argv) > 2: |
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| 466 | if sys.argv[2] == 'stop': |
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| 467 | if not stop(name, python + proc): |
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| 468 | print '%s not running' % name |
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| 469 | sys.exit(0) |
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| 470 | if sys.argv[2] == 'start': |
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| 471 | bg = 1 |
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| 472 | sys.argv = [ sys.argv[0] ] |
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| 473 | else: |
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| 474 | sys.argv = [ sys.argv[0] ] + sys.argv[2:] |
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| 475 | |
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| 476 | elif arg and name == 'freevo' and not (arg in ['--force-fs', '--trace', '--doc']): |
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| 477 | # ok, don't know about that arg, freevo should be started, but |
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| 478 | # it's also no freevo arg |
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| 479 | print 'unknown command line option: %s' % sys.argv[1:] |
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| 480 | print |
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| 481 | show_help() |
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| 482 | |
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| 483 | else: |
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| 484 | # arg for freevo |
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| 485 | proc += sys.argv[1:] |
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| 486 | |
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| 487 | |
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| 488 | if name != 'freevo': |
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| 489 | proc = [ os.path.join(freevo_python, 'helpers', name + '.py') ] + sys.argv[1:] |
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| 490 | if not os.path.isfile(proc[0]): |
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| 491 | if os.path.isfile(name): |
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| 492 | name = os.path.splitext(os.path.basename(name))[0] |
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| 493 | proc = proc[1:] |
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| 494 | else: |
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| 495 | proc = [ os.path.join(freevo_python, 'helpers', name + '.py') ] + sys.argv[1:] |
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| 496 | print 'can\'t find helper %s' % name |
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| 497 | sys.exit(1) |
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| 498 | |
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| 499 | if check and getpid(name, python + proc)[1]: |
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| 500 | if name != 'freevo': |
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| 501 | print '%s still running, run \'freevo %s stop\' to stop' % (name, name) |
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| 502 | else: |
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| 503 | print 'freevo still running, run \'freevo stop\' to stop' |
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| 504 | sys.exit(0) |
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| 505 | |
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| 506 | if profile: |
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| 507 | if sys.hexversion > 0x02050000: |
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| 508 | python += ['-m', 'cProfile', '-o', '/tmp/%s.stats' % name] |
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| 509 | else: |
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| 510 | python += ['-m', 'profile', '-o', '/tmp/%s.stats' % name] |
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| 511 | |
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| 512 | start(name, python+proc, bg, check) |
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