File size: 11,475 Bytes
8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 | // Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System.Collections.Generic;
using System.IO;
using System.Management.Automation.Host;
using System.Management.Automation.Internal.Host;
using Dbg = System.Management.Automation.Diagnostics;
namespace System.Management.Automation.Remoting
{
/// <summary>
/// This class contains information about the capability of one side of the connection. The client
/// side and the server side will have their own capabilities. These two sets of capabilities will
/// be used in a capability negotiation algorithm to determine if it is possible to establish a
/// connection between the client and the server.
/// </summary>
internal class RemoteSessionCapability
{
#region DO NOT REMOVE OR RENAME THESE FIELDS - it will break remoting compatibility with Windows PowerShell
private readonly Version _psversion;
private readonly Version _serversion;
private Version _protocolVersion;
private readonly RemotingDestination _remotingDestination;
#endregion
internal Version ProtocolVersion
{
get
{
return _protocolVersion;
}
set
{
_protocolVersion = value;
}
}
internal Version PSVersion { get { return _psversion; } }
internal Version SerializationVersion { get { return _serversion; } }
internal RemotingDestination RemotingDestination { get { return _remotingDestination; } }
/// <summary>
/// Constructor for RemoteSessionCapability.
/// </summary>
/// <remarks>should not be called from outside, use create methods instead
/// </remarks>
internal RemoteSessionCapability(RemotingDestination remotingDestination)
{
_protocolVersion = RemotingConstants.ProtocolVersion;
// PS Version 3 is fully backward compatible with Version 2
// In the remoting protocol sense, nothing is changing between PS3 and PS2
// For negotiation to succeed with old client/servers we have to use 2.
_psversion = new Version(2, 0); // PSVersionInfo.PSVersion;
_serversion = PSVersionInfo.SerializationVersion;
_remotingDestination = remotingDestination;
}
internal RemoteSessionCapability(RemotingDestination remotingDestination,
Version protocolVersion,
Version psVersion,
Version serVersion)
{
_protocolVersion = protocolVersion;
_psversion = psVersion;
_serversion = serVersion;
_remotingDestination = remotingDestination;
}
/// <summary>
/// Create client capability.
/// </summary>
internal static RemoteSessionCapability CreateClientCapability()
{
return new RemoteSessionCapability(RemotingDestination.Server);
}
/// <summary>
/// Create server capability.
/// </summary>
internal static RemoteSessionCapability CreateServerCapability()
{
return new RemoteSessionCapability(RemotingDestination.Client);
}
}
/// <summary>
/// The HostDefaultDataId enum.
/// </summary>
internal enum HostDefaultDataId
{
ForegroundColor,
BackgroundColor,
CursorPosition,
WindowPosition,
CursorSize,
BufferSize,
WindowSize,
MaxWindowSize,
MaxPhysicalWindowSize,
WindowTitle,
}
/// <summary>
/// The HostDefaultData class.
/// </summary>
internal sealed class HostDefaultData
{
/// <summary>
/// Data.
/// </summary>
#region DO NOT REMOVE OR RENAME THESE FIELDS - it will break remoting compatibility with Windows PowerShell
private readonly Dictionary<HostDefaultDataId, object> data;
#endregion
/// <summary>
/// Private constructor to force use of Create.
/// </summary>
private HostDefaultData()
{
data = new Dictionary<HostDefaultDataId, object>();
}
/// <summary>
/// Indexer to provide clean access to data.
/// </summary>
internal object this[HostDefaultDataId id]
{
get
{
return this.GetValue(id);
}
}
/// <summary>
/// Has value.
/// </summary>
internal bool HasValue(HostDefaultDataId id)
{
return data.ContainsKey(id);
}
/// <summary>
/// Set value.
/// </summary>
internal void SetValue(HostDefaultDataId id, object dataValue)
{
data[id] = dataValue;
}
/// <summary>
/// Get value.
/// </summary>
internal object GetValue(HostDefaultDataId id)
{
object result;
data.TryGetValue(id, out result);
return result;
}
/// <summary>
/// Returns null if host is null or if reading RawUI fields fails; otherwise returns a valid object.
/// </summary>
internal static HostDefaultData Create(PSHostRawUserInterface hostRawUI)
{
if (hostRawUI == null)
{
return null;
}
HostDefaultData hostDefaultData = new HostDefaultData();
// Try to get values from the host. Catch-all okay because of 3rd party call-out.
// Set ForegroundColor.
try
{
hostDefaultData.SetValue(HostDefaultDataId.ForegroundColor, hostRawUI.ForegroundColor);
}
catch (Exception)
{
}
// Set BackgroundColor.
try
{
hostDefaultData.SetValue(HostDefaultDataId.BackgroundColor, hostRawUI.BackgroundColor);
}
catch (Exception)
{
}
// Set CursorPosition.
try
{
hostDefaultData.SetValue(HostDefaultDataId.CursorPosition, hostRawUI.CursorPosition);
}
catch (Exception)
{
}
// Set WindowPosition.
try
{
hostDefaultData.SetValue(HostDefaultDataId.WindowPosition, hostRawUI.WindowPosition);
}
catch (Exception)
{
}
// Set CursorSize.
try
{
hostDefaultData.SetValue(HostDefaultDataId.CursorSize, hostRawUI.CursorSize);
}
catch (Exception)
{
}
// Set BufferSize.
try
{
hostDefaultData.SetValue(HostDefaultDataId.BufferSize, hostRawUI.BufferSize);
}
catch (Exception)
{
}
// Set WindowSize.
try
{
hostDefaultData.SetValue(HostDefaultDataId.WindowSize, hostRawUI.WindowSize);
}
catch (Exception)
{
}
// Set MaxWindowSize.
try
{
hostDefaultData.SetValue(HostDefaultDataId.MaxWindowSize, hostRawUI.MaxWindowSize);
}
catch (Exception)
{
}
// Set MaxPhysicalWindowSize.
try
{
hostDefaultData.SetValue(HostDefaultDataId.MaxPhysicalWindowSize, hostRawUI.MaxPhysicalWindowSize);
}
catch (Exception)
{
}
// Set WindowTitle.
try
{
hostDefaultData.SetValue(HostDefaultDataId.WindowTitle, hostRawUI.WindowTitle);
}
catch (Exception)
{
}
return hostDefaultData;
}
}
/// <summary>
/// The HostInfo class.
/// </summary>
internal class HostInfo
{
/// <summary>
/// Host default data.
/// </summary>
internal HostDefaultData HostDefaultData
{
get { return _hostDefaultData; }
}
/// <summary>
/// Is host null.
/// </summary>
internal bool IsHostNull
{
get { return _isHostNull; }
}
/// <summary>
/// Is host ui null.
/// </summary>
private readonly bool _isHostUINull;
/// <summary>
/// Is host ui null.
/// </summary>
internal bool IsHostUINull
{
get
{
return _isHostUINull;
}
}
/// <summary>
/// Is host raw ui null.
/// </summary>
private readonly bool _isHostRawUINull;
private readonly bool _isHostNull;
#region DO NOT REMOVE OR RENAME THESE FIELDS - it will break remoting compatibility with Windows PowerShell
private readonly HostDefaultData _hostDefaultData;
private bool _useRunspaceHost;
#endregion
/// <summary>
/// Is host raw ui null.
/// </summary>
internal bool IsHostRawUINull
{
get
{
return _isHostRawUINull;
}
}
/// <summary>
/// Use runspace host.
/// </summary>
internal bool UseRunspaceHost
{
get { return _useRunspaceHost; }
set { _useRunspaceHost = value; }
}
/// <summary>
/// Constructor for HostInfo.
/// </summary>
internal HostInfo(PSHost host)
{
// Set these flags based on investigating the host.
CheckHostChain(host, ref _isHostNull, ref _isHostUINull, ref _isHostRawUINull);
// If raw UI is non-null then get the host-info object.
if (!_isHostUINull && !_isHostRawUINull)
{
_hostDefaultData = HostDefaultData.Create(host.UI.RawUI);
}
}
/// <summary>
/// Check host chain.
/// </summary>
private static void CheckHostChain(PSHost host, ref bool isHostNull, ref bool isHostUINull, ref bool isHostRawUINull)
{
// Set the defaults.
isHostNull = true;
isHostUINull = true;
isHostRawUINull = true;
// Unwrap the host: remove outer InternalHost object.
if (host == null)
{
// If host is null then the bools are correct. Nothing further to do here.
return;
}
else if (host is InternalHost)
{
// This nesting can only be one level deep.
host = ((InternalHost)host).ExternalHost;
}
// At this point we know for sure that the host is not null.
isHostNull = false;
// Verify that the UI is not null.
if (host.UI == null)
{
return;
}
isHostUINull = false;
// Verify that the raw UI is not null.
if (host.UI.RawUI == null)
{
return;
}
isHostRawUINull = false;
}
}
}
|