|
| 1 | +import os |
| 2 | +import sys |
| 3 | +import string |
| 4 | +from Tkinter import * |
| 5 | +from ScrolledText import ScrolledText |
| 6 | +from Dialog import Dialog |
| 7 | +import signal |
| 8 | + |
| 9 | +TK_READABLE = 1 |
| 10 | +TK_WRITABLE = 2 |
| 11 | +TK_EXCEPTION = 4 |
| 12 | + |
| 13 | +BUFSIZE = 512 |
| 14 | + |
| 15 | +class ShellWindow(ScrolledText): |
| 16 | + |
| 17 | + def __init__(self, master = None, cnf = {}): |
| 18 | + try: |
| 19 | + shell = cnf['shell'] |
| 20 | + del cnf['shell'] |
| 21 | + except KeyError: |
| 22 | + try: |
| 23 | + shell = os.environ['SHELL'] |
| 24 | + except KeyError: |
| 25 | + shell = '/bin/sh' |
| 26 | + shell = shell + ' -i' |
| 27 | + args = string.split(shell) |
| 28 | + shell = args[0] |
| 29 | + |
| 30 | + ScrolledText.__init__(self, master, cnf) |
| 31 | + self.pos = '1.0' |
| 32 | + self.bind('<Return>', self.inputhandler) |
| 33 | + self.bind('<Control-c>', self.sigint) |
| 34 | + self.bind('<Control-t>', self.sigterm) |
| 35 | + self.bind('<Control-k>', self.sigkill) |
| 36 | + self.bind('<Control-d>', self.sendeof) |
| 37 | + |
| 38 | + self.pid, self.fromchild, self.tochild = spawn(shell, args) |
| 39 | + self.tk.createfilehandler(self.fromchild, TK_READABLE, |
| 40 | + self.outputhandler) |
| 41 | + |
| 42 | + def outputhandler(self, file, mask): |
| 43 | + data = os.read(file, BUFSIZE) |
| 44 | + if not data: |
| 45 | + self.tk.deletefilehandler(file) |
| 46 | + pid, sts = os.waitpid(self.pid, 0) |
| 47 | + print 'pid', pid, 'status', sts |
| 48 | + self.pid = None |
| 49 | + detail = sts>>8 |
| 50 | + cause = sts & 0xff |
| 51 | + if cause == 0: |
| 52 | + msg = "exit status %d" % detail |
| 53 | + else: |
| 54 | + msg = "killed by signal %d" % (cause & 0x7f) |
| 55 | + if cause & 0x80: |
| 56 | + msg = msg + " -- core dumped" |
| 57 | + Dialog(self.master, { |
| 58 | + 'text': msg, |
| 59 | + 'title': "Exit status", |
| 60 | + 'bitmap': 'warning', |
| 61 | + 'default': 0, |
| 62 | + 'strings': ('OK',), |
| 63 | + }) |
| 64 | + return |
| 65 | + self.insert('end', data) |
| 66 | + self.pos = self.index('end') |
| 67 | + self.yview_pickplace('end') |
| 68 | + |
| 69 | + def inputhandler(self, *args): |
| 70 | + if not self.pid: |
| 71 | + Dialog(self.master, { |
| 72 | + 'text': "No active process", |
| 73 | + 'title': "No process", |
| 74 | + 'bitmap': 'error', |
| 75 | + 'default': 0, |
| 76 | + 'strings': ('OK',), |
| 77 | + }) |
| 78 | + return |
| 79 | + self.insert('end', '\n') |
| 80 | + line = self.get(self.pos, 'end') |
| 81 | + self.pos = self.index('end') |
| 82 | + os.write(self.tochild, line) |
| 83 | + |
| 84 | + def sendeof(self, *args): |
| 85 | + if not self.pid: |
| 86 | + Dialog(self.master, { |
| 87 | + 'text': "No active process", |
| 88 | + 'title': "No process", |
| 89 | + 'bitmap': 'error', |
| 90 | + 'default': 0, |
| 91 | + 'strings': ('OK',), |
| 92 | + }) |
| 93 | + return |
| 94 | + os.close(self.tochild) |
| 95 | + |
| 96 | + def sendsig(self, sig): |
| 97 | + if not self.pid: |
| 98 | + Dialog(self.master, { |
| 99 | + 'text': "No active process", |
| 100 | + 'title': "No process", |
| 101 | + 'bitmap': 'error', |
| 102 | + 'default': 0, |
| 103 | + 'strings': ('OK',), |
| 104 | + }) |
| 105 | + return |
| 106 | + os.kill(self.pid, sig) |
| 107 | + |
| 108 | + def sigint(self, *args): |
| 109 | + self.sendsig(signal.SIGINT) |
| 110 | + |
| 111 | + def sigquit(self, *args): |
| 112 | + self.sendsig(signal.SIGQUIT) |
| 113 | + |
| 114 | + def sigterm(self, *args): |
| 115 | + self.sendsig(signal.SIGTERM) |
| 116 | + |
| 117 | + def sigkill(self, *args): |
| 118 | + self.sendsig(signal.SIGKILL) |
| 119 | + |
| 120 | +MAXFD = 100 # Max number of file descriptors (os.getdtablesize()???) |
| 121 | + |
| 122 | +def spawn(prog, args): |
| 123 | + p2cread, p2cwrite = os.pipe() |
| 124 | + c2pread, c2pwrite = os.pipe() |
| 125 | + pid = os.fork() |
| 126 | + if pid == 0: |
| 127 | + # Child |
| 128 | + os.close(0) |
| 129 | + os.close(1) |
| 130 | + os.close(2) |
| 131 | + if os.dup(p2cread) <> 0: |
| 132 | + sys.stderr.write('popen2: bad read dup\n') |
| 133 | + if os.dup(c2pwrite) <> 1: |
| 134 | + sys.stderr.write('popen2: bad write dup\n') |
| 135 | + if os.dup(c2pwrite) <> 2: |
| 136 | + sys.stderr.write('popen2: bad write dup\n') |
| 137 | + for i in range(3, MAXFD): |
| 138 | + try: |
| 139 | + os.close(i) |
| 140 | + except: |
| 141 | + pass |
| 142 | + try: |
| 143 | + os.execvp(prog, args) |
| 144 | + finally: |
| 145 | + print 'execvp failed' |
| 146 | + os._exit(1) |
| 147 | + os.close(p2cread) |
| 148 | + os.close(c2pwrite) |
| 149 | + return pid, c2pread, p2cwrite |
| 150 | + |
| 151 | +def test(): |
| 152 | + shell = string.join(sys.argv[1:]) |
| 153 | + cnf = {} |
| 154 | + if shell: |
| 155 | + cnf['shell'] = shell |
| 156 | + root = Tk() |
| 157 | + root.minsize(1, 1) |
| 158 | + w = ShellWindow(root, cnf) |
| 159 | + w.pack({'expand': 1, 'fill': 'both'}) |
| 160 | + w.focus_set() |
| 161 | + w.tk.mainloop() |
| 162 | + |
| 163 | +if __name__ == '__main__': |
| 164 | + test() |
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