|
| 1 | +import socket |
| 2 | +from unittest.mock import patch |
| 3 | + |
| 4 | +import pytest |
| 5 | +from redis.client import Redis |
| 6 | +from redis.exceptions import ExternalAuthProviderError |
| 7 | +from tests.conftest import skip_if_hiredis_parser |
| 8 | + |
| 9 | + |
| 10 | +class MockSocket: |
| 11 | + """Mock socket that simulates Redis protocol responses.""" |
| 12 | + |
| 13 | + def __init__(self): |
| 14 | + self.sent_data = [] |
| 15 | + self.closed = False |
| 16 | + self.pending_responses = [] |
| 17 | + |
| 18 | + def connect(self, address): |
| 19 | + pass |
| 20 | + |
| 21 | + def send(self, data): |
| 22 | + """Simulate sending data to Redis.""" |
| 23 | + if self.closed: |
| 24 | + raise ConnectionError("Socket is closed") |
| 25 | + self.sent_data.append(data) |
| 26 | + |
| 27 | + # Analyze the command and prepare appropriate response |
| 28 | + if b"HELLO" in data: |
| 29 | + response = b"%7\r\n$6\r\nserver\r\n$5\r\nredis\r\n$7\r\nversion\r\n$5\r\n7.4.0\r\n$5\r\nproto\r\n:3\r\n$2\r\nid\r\n:1\r\n$4\r\nmode\r\n$10\r\nstandalone\r\n$4\r\nrole\r\n$6\r\nmaster\r\n$7\r\nmodules\r\n*0\r\n" |
| 30 | + self.pending_responses.append(response) |
| 31 | + elif b"SET" in data: |
| 32 | + response = b"+OK\r\n" |
| 33 | + self.pending_responses.append(response) |
| 34 | + elif b"GET" in data: |
| 35 | + # Extract key and provide appropriate response |
| 36 | + if b"hello" in data: |
| 37 | + response = b"$5\r\nworld\r\n" |
| 38 | + self.pending_responses.append(response) |
| 39 | + # Handle specific keys used in tests |
| 40 | + elif b"ldap_error" in data: |
| 41 | + self.pending_responses.append(b"-ERR problem with LDAP service\r\n") |
| 42 | + else: |
| 43 | + self.pending_responses.append(b"$-1\r\n") # NULL response |
| 44 | + else: |
| 45 | + self.pending_responses.append(b"+OK\r\n") # Default response |
| 46 | + |
| 47 | + return len(data) |
| 48 | + |
| 49 | + def sendall(self, data): |
| 50 | + """Simulate sending all data to Redis.""" |
| 51 | + return self.send(data) |
| 52 | + |
| 53 | + def recv(self, bufsize): |
| 54 | + """Simulate receiving data from Redis.""" |
| 55 | + if self.closed: |
| 56 | + raise ConnectionError("Socket is closed") |
| 57 | + |
| 58 | + # Use pending responses that were prepared when commands were sent |
| 59 | + if self.pending_responses: |
| 60 | + response = self.pending_responses.pop(0) |
| 61 | + return response[:bufsize] # Respect buffer size |
| 62 | + else: |
| 63 | + # No data available - this should block or raise an exception |
| 64 | + # For can_read checks, we should indicate no data is available |
| 65 | + import errno |
| 66 | + |
| 67 | + raise BlockingIOError(errno.EAGAIN, "Resource temporarily unavailable") |
| 68 | + |
| 69 | + def recv_into(self, buffer, nbytes=0): |
| 70 | + """ |
| 71 | + Receive data from Redis and write it into the provided buffer. |
| 72 | + Returns the number of bytes written. |
| 73 | +
|
| 74 | + This method is used by the hiredis parser for efficient data reading. |
| 75 | + """ |
| 76 | + if self.closed: |
| 77 | + raise ConnectionError("Socket is closed") |
| 78 | + |
| 79 | + # Use pending responses that were prepared when commands were sent |
| 80 | + if self.pending_responses: |
| 81 | + response = self.pending_responses.pop(0) |
| 82 | + |
| 83 | + # Determine how many bytes to write |
| 84 | + if nbytes == 0: |
| 85 | + nbytes = len(buffer) |
| 86 | + |
| 87 | + # Write data into the buffer (up to nbytes or response length) |
| 88 | + bytes_to_write = min(len(response), nbytes, len(buffer)) |
| 89 | + buffer[:bytes_to_write] = response[:bytes_to_write] |
| 90 | + |
| 91 | + return bytes_to_write |
| 92 | + else: |
| 93 | + # No data available - this should block or raise an exception |
| 94 | + # For can_read checks, we should indicate no data is available |
| 95 | + import errno |
| 96 | + |
| 97 | + raise BlockingIOError(errno.EAGAIN, "Resource temporarily unavailable") |
| 98 | + |
| 99 | + def fileno(self): |
| 100 | + """Return a fake file descriptor for select/poll operations.""" |
| 101 | + return 1 # Fake file descriptor |
| 102 | + |
| 103 | + def close(self): |
| 104 | + """Simulate closing the socket.""" |
| 105 | + self.closed = True |
| 106 | + self.address = None |
| 107 | + self.timeout = None |
| 108 | + |
| 109 | + def settimeout(self, timeout): |
| 110 | + pass |
| 111 | + |
| 112 | + def setsockopt(self, level, optname, value): |
| 113 | + pass |
| 114 | + |
| 115 | + def setblocking(self, blocking): |
| 116 | + pass |
| 117 | + |
| 118 | + def shutdown(self, how): |
| 119 | + pass |
| 120 | + |
| 121 | + |
| 122 | +class TestErrorParsing: |
| 123 | + def setup_method(self): |
| 124 | + """Set up test fixtures with mocked sockets.""" |
| 125 | + self.mock_sockets = [] |
| 126 | + self.original_socket = socket.socket |
| 127 | + |
| 128 | + # Mock socket creation to return our mock sockets |
| 129 | + def mock_socket_factory(*args, **kwargs): |
| 130 | + mock_sock = MockSocket() |
| 131 | + self.mock_sockets.append(mock_sock) |
| 132 | + return mock_sock |
| 133 | + |
| 134 | + self.socket_patcher = patch("socket.socket", side_effect=mock_socket_factory) |
| 135 | + self.socket_patcher.start() |
| 136 | + |
| 137 | + # Mock select.select to simulate data availability for reading |
| 138 | + def mock_select(rlist, wlist, xlist, timeout=0): |
| 139 | + # Check if any of the sockets in rlist have data available |
| 140 | + ready_sockets = [] |
| 141 | + for sock in rlist: |
| 142 | + if hasattr(sock, "connected") and sock.connected and not sock.closed: |
| 143 | + # Only return socket as ready if it actually has data to read |
| 144 | + if hasattr(sock, "pending_responses") and sock.pending_responses: |
| 145 | + ready_sockets.append(sock) |
| 146 | + # Don't return socket as ready just because it received commands |
| 147 | + # Only when there are actual responses available |
| 148 | + return (ready_sockets, [], []) |
| 149 | + |
| 150 | + self.select_patcher = patch("select.select", side_effect=mock_select) |
| 151 | + self.select_patcher.start() |
| 152 | + |
| 153 | + def teardown_method(self): |
| 154 | + """Clean up test fixtures.""" |
| 155 | + self.socket_patcher.stop() |
| 156 | + self.select_patcher.stop() |
| 157 | + |
| 158 | + @skip_if_hiredis_parser() |
| 159 | + @pytest.mark.parametrize("protocol_version", [2, 3]) |
| 160 | + def test_external_auth_provider_error(self, protocol_version): |
| 161 | + client = Redis( |
| 162 | + protocol=protocol_version, |
| 163 | + ) |
| 164 | + client.set("hello", "world") |
| 165 | + |
| 166 | + with pytest.raises(ExternalAuthProviderError): |
| 167 | + client.get("ldap_error") |
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