HAXY

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╭─────────────╮ │scroll to top│ ╰─────────────╯ ╭ serve_ssh_protocol.zig ───────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯

╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯

2174 const add = budget - ch.local_window; 2175 ch.local_window += add; 2176 var packet: [9]u8 = undefined; 2177 packet[0] = SSH_MSG_CHANNEL_WINDOW_ADJUST; 2178 std.mem.writeInt(u32, packet[1..5], ch.remote_id, .big); 2179 std.mem.writeInt(u32, packet[5..9], add, .big); 2180 try conn.writePacket(&.{&packet}); 2181 } 2182 2183 pub fn writeU32(buf: *std.ArrayList(u8), allocator: std.mem.Allocator, value: u32) !void { 2184 var bytes: [4]u8 = undefined; 2185 std.mem.writeInt(u32, &bytes, value, .big); 2186 try buf.appendSlice(allocator, &bytes); 2187 } 2188 2189 test "pty dimensions have bounded axes, preserving normal and zero sizes" { 2190 for ([_]struct { width: u32, height: u32, expected: PtySize }{ 2191 .{ .width = 80, .height = 24, .expected = .{ .width_cells = 80, .height_cells = 24 } }, 2192 .{ .width = 0, .height = 0, .expected = .{ .width_cells = 0, .height_cells = 0 } }, 2193 .{ .width = 0xffffffff, .height = 0xffffffff, .expected = .{ .width_cells = 512, .height_cells = 128 } }, 2194 }) |case| { 2195 var bytes: [8]u8 = undefined; 2196 std.mem.writeInt(u32, bytes[0..4], case.width, .big); 2197 std.mem.writeInt(u32, bytes[4..8], case.height, .big); 2198 var reader = std.Io.Reader.fixed(&bytes); 2199 try std.testing.expectEqual(case.expected, try takePtySize(&reader)); 2200 } 2201 } 2202 2203 test "channel close before shell or exec is acknowledged" { 2204 const io = std.testing.io; 2205 const allocator = std.testing.allocator; 2206 const key = [_]u8{0x5a} ** 64; 2207 var encoded: [256]u8 = undefined; 2208 var encoded_writer = std.Io.Writer.fixed(&encoded); 2209 var sender = Cipher.init(&key, 0); 2210 var open: std.ArrayList(u8) = .empty; 2211 defer open.deinit(allocator); 2212 try open.append(allocator, SSH_MSG_CHANNEL_OPEN); 2213 try writeStringField(&open, allocator, "session"); 2214 try writeU32(&open, allocator, 7); 2215 try writeU32(&open, allocator, 32768); 2216 try writeU32(&open, allocator, 32768); 2217 try sender.writePacket(io, &encoded_writer, &.{open.items}); 2218 try sender.writePacket(io, &encoded_writer, &.{&.{ SSH_MSG_CHANNEL_CLOSE, 0, 0, 0, 0 }}); 2219 var reader = std.Io.Reader.fixed(encoded_writer.buffered()); 2220 var output: [256]u8 = undefined; 2221 var writer = std.Io.Writer.fixed(&output); 2222 var idle = IdleState{}; 2223 var conn = Conn{ 2224 .io = io, 2225 .allocator = allocator, 2226 .reader = &reader, 2227 .writer = &writer, 2228 .cs_cipher = Cipher.init(&key, 0), 2229 .sc_cipher = Cipher.init(&key, 0), 2230 .rekey = undefined, 2231 .idle = &idle, 2232 }; 2233 const Handler = struct { 2234 pub fn handleSession(_: *@This(), _: *SessionCtx, _: Request) !void { 2235 return error.UnexpectedSession; 2236 } 2237 }; 2238 var handler = Handler{}; 2239 try runChannelLayer(&conn, &([_]u8{0} ** fingerprint_len), &handler); 2240 var output_reader = std.Io.Reader.fixed(writer.buffered()); 2241 var receiver = Cipher.init(&key, 0); 2242 const confirmation = try receiver.readPacket(allocator, &output_reader); 2243 defer allocator.free(confirmation); 2244 try std.testing.expectEqual(SSH_MSG_CHANNEL_OPEN_CONFIRMATION, confirmation[0]); 2245 const close = try receiver.readPacket(allocator, &output_reader); 2246 defer allocator.free(close); 2247 try std.testing.expectEqualSlices(u8, &.{ SSH_MSG_CHANNEL_CLOSE, 0, 0, 0, 7 }, close); 2248 try std.testing.expectEqual(0, output_reader.buffered().len); 2249 } 2250