| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | # |
| 3 | # wpa_supplicant/hostapd control interface using Python |
| 4 | # Copyright (c) 2013, Jouni Malinen <j@w1.fi> |
| 5 | # |
| 6 | # This software may be distributed under the terms of the BSD license. |
| 7 | # See README for more details. |
| 8 | |
| 9 | import os |
| 10 | import stat |
| 11 | import socket |
| 12 | import select |
| 13 | |
| 14 | counter = 0 |
| 15 | |
| 16 | class Ctrl: |
| 17 | def __init__(self, path, port=9877): |
| 18 | global counter |
| 19 | self.started = False |
| 20 | self.attached = False |
| 21 | self.path = path |
| 22 | self.port = port |
| 23 | |
| 24 | self.udp = False |
| 25 | if not path.startswith('/'): |
| 26 | try: |
| 27 | mode = os.stat(path).st_mode |
| 28 | if not stat.S_ISSOCK(mode): |
| 29 | self.udp = True |
| 30 | except: |
| 31 | self.udp = True |
| 32 | |
| 33 | if not self.udp: |
| 34 | self.s = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) |
| 35 | self.dest = path |
| 36 | self.local = "/tmp/wpa_ctrl_" + str(os.getpid()) + '-' + str(counter) |
| 37 | counter += 1 |
| 38 | self.s.bind(self.local) |
| 39 | try: |
| 40 | self.s.connect(self.dest) |
| 41 | except Exception as e: |
| 42 | self.s.close() |
| 43 | os.unlink(self.local) |
| 44 | raise |
| 45 | else: |
| 46 | try: |
| 47 | self.s = None |
| 48 | ai_list = socket.getaddrinfo(path, port, socket.AF_INET, |
| 49 | socket.SOCK_DGRAM) |
| 50 | for af, socktype, proto, cn, sockaddr in ai_list: |
| 51 | self.sockaddr = sockaddr |
| 52 | break |
| 53 | self.s = socket.socket(af, socktype) |
| 54 | self.s.settimeout(5) |
| 55 | self.s.sendto(b"GET_COOKIE", sockaddr) |
| 56 | reply, server = self.s.recvfrom(4096) |
| 57 | self.cookie = reply |
| 58 | self.port = port |
| 59 | except: |
| 60 | print("connect exception ", path, str(port)) |
| 61 | if self.s != None: |
| 62 | self.s.close() |
| 63 | raise |
| 64 | self.started = True |
| 65 | |
| 66 | def __del__(self): |
| 67 | self.close() |
| 68 | |
| 69 | def close(self): |
| 70 | if self.attached: |
| 71 | try: |
| 72 | self.detach() |
| 73 | except Exception as e: |
| 74 | # Need to ignore this allow the socket to be closed |
| 75 | self.attached = False |
| 76 | pass |
| 77 | if self.started: |
| 78 | self.s.close() |
| 79 | if not self.udp: |
| 80 | os.unlink(self.local) |
| 81 | self.started = False |
| 82 | |
| 83 | def request(self, cmd, timeout=10): |
| 84 | if type(cmd) == str: |
| 85 | try: |
| 86 | cmd2 = cmd.encode() |
| 87 | cmd = cmd2 |
| 88 | except UnicodeDecodeError as e: |
| 89 | pass |
| 90 | if self.udp: |
| 91 | self.s.sendto(self.cookie + cmd, self.sockaddr) |
| 92 | else: |
| 93 | self.s.send(cmd) |
| 94 | [r, w, e] = select.select([self.s], [], [], timeout) |
| 95 | if r: |
| 96 | res = self.s.recv(4096).decode() |
| 97 | try: |
| 98 | r = str(res) |
| 99 | except UnicodeDecodeError as e: |
| 100 | r = res |
| 101 | return r |
| 102 | raise Exception("Timeout on waiting response") |
| 103 | |
| 104 | def attach(self): |
| 105 | if self.attached: |
| 106 | return None |
| 107 | res = self.request("ATTACH") |
| 108 | if "OK" in res: |
| 109 | self.attached = True |
| 110 | return None |
| 111 | raise Exception("ATTACH failed") |
| 112 | |
| 113 | def detach(self): |
| 114 | if not self.attached: |
| 115 | return None |
| 116 | if self.s.fileno() == -1: |
| 117 | self.attached = False |
| 118 | return None |
| 119 | while self.pending(): |
| 120 | ev = self.recv() |
| 121 | res = self.request("DETACH") |
| 122 | if "FAIL" not in res: |
| 123 | self.attached = False |
| 124 | return None |
| 125 | raise Exception("DETACH failed") |
| 126 | |
| 127 | def terminate(self): |
| 128 | if self.attached: |
| 129 | try: |
| 130 | self.detach() |
| 131 | except Exception as e: |
| 132 | # Need to ignore this to allow the socket to be closed |
| 133 | self.attached = False |
| 134 | self.request("TERMINATE") |
| 135 | self.close() |
| 136 | |
| 137 | def pending(self, timeout=0): |
| 138 | [r, w, e] = select.select([self.s], [], [], timeout) |
| 139 | if r: |
| 140 | return True |
| 141 | return False |
| 142 | |
| 143 | def recv(self): |
| 144 | res = self.s.recv(4096).decode() |
| 145 | try: |
| 146 | r = str(res) |
| 147 | except UnicodeDecodeError as e: |
| 148 | r = res |
| 149 | return r |