mcs/tools/gacutil/driver.cs

   1 //
   2 // Mono.Tools.GacUtil
   3 //
   4 // Author(s):
   5 //  Todd Berman <tberman@sevenl.net>
   6 //  Jackson Harper <jackson@ximian.com>
   7 //
   8 // Copyright 2003, 2004 Todd Berman
   9 // Copyright 2004 Novell, Inc (http://www.novell.com)
  10 //
  11
  12
  13 using System;
  14 using System.IO;
  15 using System.Diagnostics;
  16 using System.Text;
  17 using System.Reflection;
  18 using System.Collections;
  19 using System.Globalization;
  20 using System.Runtime.InteropServices;
  21 using System.Security.Cryptography;
  22
  23 using Mono.Security;
  24 using Mono.Security.Cryptography;
  25
  26 namespace Mono.Tools {
  27
  28         public class Driver {
  29
  30                 private enum Command {
  31                         Unknown,
  32                         Install,
  33                         InstallFromList,
  34                         Uninstall,
  35                         UninstallFromList,
  36                         UninstallSpecific,
  37                         List,
  38                         Help
  39                 }
  40
  41                 private enum VerificationResult
  42                 {
  43                         StrongNamed,
  44                         WeakNamed,
  45                         DelaySigned,
  46                         Skipped
  47                 }
  48
  49                 private static bool silent;
  50                 static bool in_bootstrap;
  51
  52                 public static int Main (string [] args)
  53                 {
  54                         if (args.Length == 0)
  55                                 Usage ();
  56
  57                         Command command = Command.Unknown;
  58                         string command_str = null;
  59
  60                         string libdir;
  61                         string name, package, gacdir, root;
  62                         name = package = root = gacdir = null;
  63                         bool check_refs = false;
  64
  65                         // Check for silent arg first so we can suppress
  66                         // warnings during command line parsing
  67                         if (Array.IndexOf (args, "/silent") > -1 || Array.IndexOf (args, "-silent") > -1)
  68                                 silent = true;
  69
  70                         for (int i=0; i<args.Length; i++) {
  71                                 if (IsSwitch (args [i])) {
  72
  73                                         // for cmd line compatibility with other gacutils
  74                                         // we always force it though
  75                                         if (args [i] == "-f" || args [i] == "/f")
  76                                                 continue;
  77
  78                                         // Ignore this option for now, although we might implement it someday
  79                                         if (args [i] == "/r") {
  80                                                 WriteLine ("WARNING: gacutil does not support traced references." +
  81                                                         "This option is being ignored.");
  82                                                 i += 3;
  83                                                 continue;
  84                                         }
  85
  86                                         // This is already handled we just dont want to choke on it
  87                                         if (args [i] == "-silent" || args [i] == "/silent")
  88                                                 continue;
  89
  90                                         if (args [i] == "-check_refs" || args [i] == "/check_refs") {
  91                                                 check_refs = true;
  92                                                 continue;
  93                                         }
  94
  95                                         if (args [i] == "-bootstrap" || args [i] == "/bootstrap") {
  96                                                 in_bootstrap = true;
  97                                                 continue;
  98                                         }
  99
 100                                         if (command == Command.Unknown) {
 101                                                 command = GetCommand (args [i]);
 102                                                 if (command != Command.Unknown) {
 103                                                         command_str = args [i];
 104                                                         continue;
 105                                                 }
 106                                         }
 107
 108                                         if (i + 1 >= args.Length) {
 109                                                 Console.WriteLine ("Option " + args [i] + " takes 1 argument");
 110                                                 return 1;
 111                                         }
 112
 113                                         switch (args [i]) {
 114                                         case "-package":
 115                                         case "/package":
 116                                                 package = args [++i];
 117                                                 continue;
 118                                         case "-root":
 119                                         case "/root":
 120                                                 root = args [++i];
 121                                                 continue;
 122                                         case "-gacdir":
 123                                         case "/gacdir":
 124                                                 gacdir = args [++i];
 125                                                 continue;
 126                                         case "/nologo":
 127                                         case "-nologo":
 128                                                 // we currently don't display a
 129                                                 // logo banner, so ignore it
 130                                                 // for command-line compatibility
 131                                                 // with MS gacutil
 132                                                 continue;
 133                                         }
 134                                 }
 135                                 if (name == null)
 136                                         name = args [i];
 137                                 else
 138                                         name += args [i];
 139                         }
 140
 141                         if (command == Command.Unknown && IsSwitch (args [0])) {
 142                                 Console.WriteLine ("Unknown command: " + args [0]);
 143                                 return 1;
 144                         } else if (command == Command.Unknown) {
 145                                 Usage ();
 146                         } else if (command == Command.Help) {
 147                                 ShowHelp (true);
 148                                 return 1;
 149                         }
 150
 151                         if (gacdir == null) {
 152                                 gacdir = GetGacDir ();
 153                                 libdir = GetLibDir ();
 154                         } else {
 155                                 gacdir = EnsureLib (gacdir);
 156                                 libdir = Path.Combine (gacdir, "mono");
 157                                 gacdir = Path.Combine (libdir, "gac");
 158                         }
 159
 160                         string link_gacdir = gacdir;
 161                         string link_libdir = libdir;
 162                         if (root != null) {
 163                                 libdir = Path.Combine (root, "mono");
 164                                 gacdir = Path.Combine (libdir, "gac");
 165                         }
 166
 167                         LoadConfig (silent);
 168
 169                         switch (command) {
 170                         case Command.Install:
 171                                 if (name == null) {
 172                                         WriteLine ("Option " + command_str + " takes 1 argument");
 173                                         return 1;
 174                                 }
 175                                 if (!Install (check_refs, name, package, gacdir, link_gacdir, libdir, link_libdir))
 176                                         return 1;
 177                                 break;
 178                         case Command.InstallFromList:
 179                                 if (name == null) {
 180                                         WriteLine ("Option " + command_str + " takes 1 argument");
 181                                         return 1;
 182                                 }
 183                                 if (!InstallFromList (check_refs, name, package, gacdir, link_gacdir, libdir, link_libdir))
 184                                         return 1;
 185                                 break;
 186                         case Command.Uninstall:
 187                                 if (name == null) {
 188                                         WriteLine ("Option " + command_str + " takes 1 argument");
 189                                         return 1;
 190                                 }
 191                                 int uninstallCount = 0;
 192                                 int uninstallFailures = 0;
 193                                 Uninstall (name, package, gacdir, libdir, false,
 194                                         ref uninstallCount, ref uninstallFailures);
 195                                 WriteLine ("Assemblies uninstalled = {0}", uninstallCount);
 196                                 WriteLine ("Failures = {0}", uninstallFailures);
 197                                 if (uninstallFailures > 0)
 198                                         return 1;
 199                                 break;
 200                         case Command.UninstallFromList:
 201                                 if (name == null) {
 202                                         WriteLine ("Option " + command_str + " takes 1 argument");
 203                                         return 1;
 204                                 }
 205                                 if (!UninstallFromList (name, package, gacdir, libdir))
 206                                         return 1;
 207                                 break;
 208                         case Command.UninstallSpecific:
 209                                 if (name == null) {
 210                                         WriteLine ("Option " + command_str + " takes 1 argument");
 211                                         return 1;
 212                                 }
 213                                 if (!UninstallSpecific (name, package, gacdir, libdir))
 214                                         return 1;
 215                                 break;
 216                         case Command.List:
 217                                 List (name, gacdir);
 218                                 break;
 219                         }
 220
 221                         return 0;
 222                 }
 223
 224                 static void Copy (string source, string target, bool v)
 225                 {
 226                         try {
 227                                 File.Delete (target);
 228                         } catch {}
 229                         File.Copy (source, target, v);
 230                 }
 231
 232                 private static bool Install (bool check_refs, string name, string package,
 233                                 string gacdir, string link_gacdir, string libdir, string link_libdir)
 234                 {
 235                         string failure_msg = "Failure adding assembly {0} to the cache: ";
 236                         ArrayList resources;
 237
 238                         if (!File.Exists (name)) {
 239                                 WriteLine (string.Format (failure_msg, name) + "The system cannot find the file specified.");
 240                                 return false;
 241                         }
 242
 243                         Assembly assembly = null;
 244                         AssemblyName an = null;
 245
 246                         try {
 247                                 assembly = Assembly.LoadFrom (name);
 248                         } catch {
 249                                 WriteLine (string.Format (failure_msg, name) + "The file specified is not a valid assembly.");
 250                                 return false;
 251                         }
 252
 253                         an = assembly.GetName ();
 254
 255                         switch (VerifyStrongName (an, name)) {
 256                         case VerificationResult.StrongNamed:
 257                         case VerificationResult.Skipped:
 258                                 break;
 259                         case VerificationResult.WeakNamed:
 260                                 WriteLine (string.Format (failure_msg, name) + "Attempt to install an assembly without a strong name"
 261                                         + (in_bootstrap ? "(continuing anyway)" : string.Empty));
 262                                 if (!in_bootstrap)
 263                                         return false;
 264                                 break;
 265                         case VerificationResult.DelaySigned:
 266                                 WriteLine (string.Format (failure_msg, name) + "Strong name cannot be verified for delay-signed assembly"
 267                                         + (in_bootstrap ? "(continuing anyway)" : string.Empty));
 268                                 if (!in_bootstrap)
 269                                         return false;
 270                                 break;
 271                         }
 272
 273                         resources = new ArrayList ();
 274                         foreach (string res_name in assembly.GetManifestResourceNames ()) {
 275                                 ManifestResourceInfo res_info = assembly.GetManifestResourceInfo (res_name);
 276
 277                                 if ((res_info.ResourceLocation & ResourceLocation.Embedded) == 0) {
 278                                         if (!File.Exists (res_info.FileName)) {
 279                                                 WriteLine (string.Format (failure_msg, name) + "The system cannot find resource " + res_info.FileName);
 280                                                 return false;
 281                                         }
 282
 283                                         resources.Add (res_info);
 284                                 }
 285                         }
 286
 287                         if (check_refs && !CheckReferencedAssemblies (an)) {
 288                                 WriteLine (string.Format (failure_msg, name) +
 289                                         "Attempt to install an assembly that " +
 290                                         "references non strong named assemblies " +
 291                                         "with -check_refs enabled.");
 292                                 return false;
 293                         }
 294
 295                         string [] siblings = { ".config", ".mdb" };
 296                         string version_token = an.Version + "_" +
 297                                                an.CultureInfo.Name.ToLower (CultureInfo.InvariantCulture) + "_" +
 298                                                GetStringToken (an.GetPublicKeyToken ());
 299                         string full_path = Path.Combine (Path.Combine (gacdir, an.Name), version_token);
 300                         string asmb_file = Path.GetFileName (name);
 301                         string asmb_path = Path.Combine (full_path, asmb_file);
 302
 303                         try {
 304                                 if (Directory.Exists (full_path)) {
 305                                         // Wipe out the directory. This way we ensure old assemblies
 306                                         // config files, and AOTd files are removed.
 307                                         Directory.Delete (full_path, true);
 308                                 }
 309                                 Directory.CreateDirectory (full_path);
 310                         } catch {
 311                                 WriteLine (string.Format (failure_msg, name) +
 312                                         "gac directories could not be created, " +
 313                                         "possibly permission issues.");
 314                                 return false;
 315                         }
 316
 317                         Copy (name, asmb_path, true);
 318
 319                         foreach (string ext in siblings) {
 320                                 string sibling = String.Concat (name, ext);
 321                                 if (File.Exists (sibling))
 322                                         Copy (sibling, String.Concat (asmb_path, ext), true);
 323                         }
 324
 325                         foreach (ManifestResourceInfo resource_info in resources) {
 326                                 try {
 327                                         Copy (resource_info.FileName, Path.Combine (full_path, Path.GetFileName (resource_info.FileName)), true);
 328                                 } catch {
 329                                         WriteLine ("ERROR: Could not install resource file " + resource_info.FileName);
 330                                         Environment.Exit (1);
 331                                 }
 332                         }
 333
 334                         if (package != null) {
 335                                 string ref_dir = Path.Combine (libdir, package);
 336                                 string ref_path = Path.Combine (ref_dir, asmb_file);
 337
 338                                 if (File.Exists (ref_path))
 339                                         File.Delete (ref_path);
 340                                 try {
 341                                         Directory.CreateDirectory (ref_dir);
 342                                 } catch {
 343                                         WriteLine ("ERROR: Could not create package dir file.");
 344                                         Environment.Exit (1);
 345                                 }
 346                                 if (Path.DirectorySeparatorChar == '/') {
 347                                         string pkg_path = "../gac/" + an.Name + "/" + version_token + "/" + asmb_file;
 348                                         symlink (pkg_path, ref_path);
 349
 350                                         foreach (string ext in siblings) {
 351                                                 string sibling = String.Concat (pkg_path, ext);
 352                                                 string sref = String.Concat (ref_path, ext);
 353                                                 if (File.Exists (sibling))
 354                                                         symlink (sibling, sref);
 355                                                 else {
 356                                                         try {
 357                                                                 File.Delete (sref);
 358                                                         } catch {
 359                                                                 // Ignore error, just delete files that should not be there.
 360                                                         }
 361                                                 }
 362                                         }
 363                                         WriteLine ("Package exported to: {0} -> {1}", ref_path, pkg_path);
 364                                 } else {
 365                                         // string link_path = Path.Combine (Path.Combine (link_gacdir, an.Name), version_token);
 366                                         //
 367                                         // We can't use 'link_path' here, since it need not be a valid path at the time 'gacutil'
 368                                         // is run, esp. when invoked in a DESTDIR install.
 369                                         Copy (name, ref_path, true);
 370                                         WriteLine ("Package exported to: " + ref_path);
 371                                 }
 372                         }
 373
 374                         WriteLine ("Installed {0} into the gac ({1})", name,
 375                                 gacdir);
 376
 377                         return true;
 378                 }
 379
 380                 private static void Uninstall (string name, string package, string gacdir, string libdir, bool listMode, ref int uninstalled, ref int failures)
 381                 {
 382                         string [] assembly_pieces = name.Split (new char[] { ',' });
 383                         Hashtable asm_info = new Hashtable ();
 384
 385                         foreach (string item in assembly_pieces) {
 386                                 if (item == String.Empty) continue;
 387                                 string[] pieces = item.Trim ().Split (new char[] { '=' }, 2);
 388                                 if(pieces.Length == 1)
 389                                         asm_info ["assembly"] = pieces [0];
 390                                 else
 391                                         asm_info [pieces[0].Trim ().ToLower (CultureInfo.InvariantCulture)] = pieces [1];
 392                         }
 393
 394                         string assembly_name = (string) asm_info ["assembly"];
 395                         string asmdir = Path.Combine (gacdir, assembly_name);
 396                         if (!Directory.Exists (asmdir)) {
 397                                 if (listMode) {
 398                                         failures++;
 399                                         WriteLine ("Assembly: " + name);
 400                                 }
 401                                 WriteLine ("No assemblies found that match: " + name);
 402                                 return;
 403                         }
 404
 405                         string searchString = GetSearchString (asm_info);
 406                         string [] directories = Directory.GetDirectories (asmdir, searchString);
 407
 408                         if (directories.Length == 0) {
 409                                 if (listMode) {
 410                                         failures++;
 411                                         WriteLine ("Assembly: " + name);
 412                                         WriteLine ("No assemblies found that match: " + name);
 413                                 }
 414                                 return;
 415                         }
 416
 417                         for (int i = 0; i < directories.Length; i++) {
 418                                 if (listMode && i > 0)
 419                                         break;
 420
 421                                 string dir = directories [i];
 422
 423                                 AssemblyName an = AssemblyName.GetAssemblyName (
 424                                         Path.Combine (dir, assembly_name + ".dll"));
 425                                 WriteLine ("Assembly: " + an.FullName);
 426
 427                                 Directory.Delete (dir, true);
 428                                 if (package != null) {
 429                                         string link_dir = Path.Combine (libdir, package);
 430                                         string link = Path.Combine (link_dir, assembly_name + ".dll");
 431                                         try {
 432                                                 File.Delete (link);
 433                                         } catch {
 434                                                 // The file might not exist, happens with
 435                                                 // the debugger on make uninstall
 436                                         }
 437
 438                                         if (Directory.GetFiles (link_dir).Length == 0) {
 439                                                 WriteLine ("Cleaning package directory, it is empty.");
 440                                                 try {
 441                                                         Directory.Delete (link_dir);
 442                                                 } catch {
 443                                                         // Workaround: GetFiles does not list Symlinks
 444                                                 }
 445                                         }
 446                                 }
 447
 448                                 uninstalled++;
 449                                 WriteLine ("Uninstalled: " + an.FullName);
 450                         }
 451
 452                         if (Directory.GetDirectories (asmdir).Length == 0) {
 453                                 WriteLine ("Cleaning assembly dir, it is empty");
 454                                 try {
 455                                         Directory.Delete (asmdir);
 456                                 } catch {
 457                                         // Workaround: GetFiles does not list Symlinks
 458                                 }
 459                         }
 460                 }
 461
 462                 private static bool UninstallSpecific (string name, string package,
 463                                 string gacdir, string libdir)
 464                 {
 465                         string failure_msg = "Failure to remove assembly from the cache: ";
 466
 467                         if (!File.Exists (name)) {
 468                                 WriteLine (failure_msg + "The system cannot find the file specified.");
 469                                 return false;
 470                         }
 471
 472                         AssemblyName an = null;
 473
 474                         try {
 475                                 an = AssemblyName.GetAssemblyName (name);
 476                         } catch {
 477                                 WriteLine (failure_msg + "The file specified is not a valid assembly.");
 478                                 return false;
 479                         }
 480
 481                         int uninstallCount = 0;
 482                         int uninstallFailures = 0;
 483                         Uninstall (an.FullName.Replace (" ", String.Empty),
 484                                 package, gacdir, libdir, true, ref uninstallCount,
 485                                 ref uninstallFailures);
 486                         WriteLine ("Assemblies uninstalled = {0}", uninstallCount);
 487                         WriteLine ("Failures = {0}", uninstallFailures);
 488                         return (uninstallFailures == 0);
 489                 }
 490
 491                 private static void List (string name, string gacdir)
 492                 {
 493                         WriteLine ("The following assemblies are installed into the GAC:");
 494
 495                         if (name != null) {
 496                                 FilteredList (name, gacdir);
 497                                 return;
 498                         }
 499
 500                         int count = 0;
 501                         DirectoryInfo gacinfo = new DirectoryInfo (gacdir);
 502                         foreach (DirectoryInfo parent in gacinfo.GetDirectories ()) {
 503                                 foreach (DirectoryInfo dir in parent.GetDirectories ()) {
 504                                         string asmb = Path.Combine (Path.Combine (parent.FullName, dir.Name), parent.Name) + ".dll";
 505                                         if (File.Exists (asmb)) {
 506                                                 WriteLine (AsmbNameFromVersionString (parent.Name, dir.Name));
 507                                                 count++;
 508                                         }
 509                                 }
 510                         }
 511                         WriteLine ("Number of items = " + count);
 512                 }
 513
 514                 private static void FilteredList (string name, string gacdir)
 515                 {
 516                         string [] assembly_pieces = name.Split (new char[] { ',' });
 517                         Hashtable asm_info = new Hashtable ();
 518
 519                         foreach (string item in assembly_pieces) {
 520                                 string[] pieces = item.Trim ().Split (new char[] { '=' }, 2);
 521                                 if(pieces.Length == 1)
 522                                         asm_info ["assembly"] = pieces [0];
 523                                 else
 524                                         asm_info [pieces[0].Trim ().ToLower (CultureInfo.InvariantCulture)] = pieces [1];
 525                         }
 526
 527                         string asmdir = Path.Combine (gacdir, (string) asm_info ["assembly"]);
 528                         if (!Directory.Exists (asmdir)) {
 529                                 WriteLine ("Number of items = 0");
 530                                 return;
 531                         }
 532                         string search = GetSearchString (asm_info);
 533                         string [] dir_list = Directory.GetDirectories (asmdir, search);
 534
 535                         int count = 0;
 536                         foreach (string dir in dir_list) {
 537                                 string asmb = Path.Combine (dir, (string) asm_info ["assembly"]) + ".dll";
 538                                 if (File.Exists (asmb)) {
 539                                         WriteLine (AsmbNameFromVersionString ((string) asm_info ["assembly"],
 540                                                                    new DirectoryInfo (dir).Name));
 541                                         count++;
 542                                 }
 543                         }
 544                         WriteLine ("Number of items = " + count);
 545                 }
 546
 547                 private static bool InstallFromList (bool check_refs, string list_file, string package,
 548                                 string gacdir, string link_gacdir, string libdir, string link_libdir)
 549                 {
 550                         StreamReader s = null;
 551                         int processed, failed;
 552                         string listdir = Path.GetDirectoryName (
 553                                 Path.GetFullPath (list_file));
 554
 555                         processed = failed = 0;
 556
 557                         try {
 558                                 s = new StreamReader (list_file);
 559
 560                                 string line;
 561                                 while ((line = s.ReadLine ()) != null) {
 562                                         string file = line.Trim ();
 563                                         if (file.Length == 0)
 564                                                 continue;
 565
 566                                         string assemblyPath = Path.Combine (listdir,
 567                                                 file);
 568
 569                                         if (!Install (check_refs, assemblyPath, package, gacdir,
 570                                                      link_gacdir, libdir, link_libdir))
 571                                                 failed++;
 572                                         processed++;
 573                                 }
 574
 575                                 WriteLine ("Assemblies processed = {0}", processed);
 576                                 WriteLine ("Assemblies installed = {0}", processed - failed);
 577                                 WriteLine ("Failures = {0}", failed);
 578
 579                                 return (failed == 0);
 580                         } catch (IOException) {
 581                                 WriteLine ("Failed to open assemblies list file " + list_file + ".");
 582                                 return false;
 583                         } finally {
 584                                 if (s != null)
 585                                         s.Close ();
 586                         }
 587                 }
 588
 589                 private static bool UninstallFromList (string list_file, string package,
 590                                 string gacdir, string libdir)
 591                 {
 592                         StreamReader s = null;
 593                         int failed, uninstalled;
 594
 595                         failed = uninstalled = 0;
 596
 597                         try {
 598                                 s = new StreamReader (list_file);
 599
 600                                 string line;
 601                                 while ((line = s.ReadLine ()) != null) {
 602                                         string name = line.Trim ();
 603                                         if (name.Length == 0)
 604                                                 continue;
 605                                         Uninstall (line, package, gacdir, libdir,
 606                                                 true, ref uninstalled, ref failed);
 607                                 }
 608
 609                                 WriteLine ("Assemblies processed = {0}", uninstalled+failed);
 610                                 WriteLine ("Assemblies uninstalled = {0}", uninstalled);
 611                                 WriteLine ("Failures = {0}", failed);
 612
 613                                 return (failed == 0);
 614                         } catch (IOException) {
 615                                 WriteLine ("Failed to open assemblies list file " + list_file + ".");
 616                                 return false;
 617                         } finally {
 618                                 if (s != null)
 619                                         s.Close ();
 620                         }
 621                 }
 622
 623                 private static bool CheckReferencedAssemblies (AssemblyName an)
 624                 {
 625                         AppDomain d = null;
 626                         try {
 627                                 Assembly a = Assembly.LoadFrom (an.CodeBase);
 628                                 AssemblyName corlib = typeof (object).Assembly.GetName ();
 629
 630                                 foreach (AssemblyName ref_an in a.GetReferencedAssemblies ()) {
 631                                         if (ref_an.Name == corlib.Name) // Just do a string compare so we can install on diff versions
 632                                                 continue;
 633                                         byte [] pt = ref_an.GetPublicKeyToken ();
 634                                         if (pt == null || pt.Length == 0) {
 635                                                 WriteLine ("Assembly " + ref_an.Name + " is not strong named.");
 636                                                 return false;
 637                                         }
 638                                 }
 639                         } catch (Exception e) {
 640                                 WriteLine (e.ToString ()); // This should be removed pre beta3
 641                                 return false;
 642                         } finally {
 643                                 if (d != null) {
 644                                         try {
 645                                                 AppDomain.Unload (d);
 646                                         } catch { }
 647                                 }
 648                         }
 649
 650                         return true;
 651                 }
 652
 653                 private static string GetSearchString (Hashtable asm_info)
 654                 {
 655                         if (asm_info.Keys.Count == 1)
 656                                 return "*";
 657                         string version, culture, token;
 658
 659                         version = asm_info ["version"] as string;
 660                         version = (version == null ? "*" : version + "*");
 661                         culture = asm_info ["culture"] as string;
 662                         culture = (culture == null ? "*" : (culture == "neutral") ? String.Empty : culture.ToLower (CultureInfo.InvariantCulture));
 663                         token = asm_info ["publickeytoken"] as string;
 664                         token = (token == null ? "*" : token.ToLower (CultureInfo.InvariantCulture));
 665
 666                         return String.Format ("{0}_{1}_{2}", version, culture, token);
 667                 }
 668
 669                 private static string AsmbNameFromVersionString (string name, string str)
 670                 {
 671                         string [] pieces = str.Split ('_');
 672                         return String.Format ("{0}, Version={1}, Culture={2}, PublicKeyToken={3}",
 673                                         name, pieces [0], (pieces [1] == String.Empty ? "neutral" : pieces [1]),
 674                                         pieces [2]);
 675                 }
 676
 677                 static bool LoadConfig (bool quiet)
 678                 {
 679                         MethodInfo config = typeof (System.Environment).GetMethod ("GetMachineConfigPath",
 680                                 BindingFlags.Static | BindingFlags.NonPublic);
 681
 682                         if (config != null) {
 683                                 string path = (string) config.Invoke (null, null);
 684
 685                                 bool exist = File.Exists (path);
 686                                 if (!quiet && !exist)
 687                                         Console.WriteLine ("Couldn't find machine.config");
 688
 689                                 StrongNameManager.LoadConfig (path);
 690                                 return exist;
 691                         } else if (!quiet)
 692                                 Console.WriteLine ("Couldn't resolve machine.config location (corlib issue)");
 693
 694                         // default CSP
 695                         return false;
 696                 }
 697
 698                 // modified copy from sn
 699                 private static VerificationResult VerifyStrongName (AssemblyName an, string assemblyFile)
 700                 {
 701                         byte [] publicKey = StrongNameManager.GetMappedPublicKey (an.GetPublicKeyToken ());
 702                         if ((publicKey == null) || (publicKey.Length < 12)) {
 703                                 // no mapping
 704                                 publicKey = an.GetPublicKey ();
 705                                 if ((publicKey == null) || (publicKey.Length < 12))
 706                                         return VerificationResult.WeakNamed;
 707                         }
 708
 709                         // Note: MustVerify is based on the original token (by design). Public key
 710                         // remapping won't affect if the assembly is verified or not.
 711                         if (StrongNameManager.MustVerify (an)) {
 712                                 RSA rsa = CryptoConvert.FromCapiPublicKeyBlob (publicKey, 12);
 713                                 StrongName sn = new StrongName (rsa);
 714                                 if (sn.Verify (assemblyFile)) {
 715                                         return VerificationResult.StrongNamed;
 716                                 } else {
 717                                         return VerificationResult.DelaySigned;
 718                                 }
 719                         } else {
 720                                 return VerificationResult.Skipped;
 721                         }
 722                 }
 723
 724                 private static bool IsSwitch (string arg)
 725                 {
 726                         return (arg [0] == '-' || (arg [0] == '/' && !arg.EndsWith(".dll") && arg.IndexOf('/', 1) < 0 ) );
 727                 }
 728
 729                 private static Command GetCommand (string arg)
 730                 {
 731                         Command c = Command.Unknown;
 732
 733                         switch (arg) {
 734                         case "-i":
 735                         case "/i":
 736                         case "--install":
 737                                 c = Command.Install;
 738                                 break;
 739                         case "-il":
 740                         case "/il":
 741                         case "--install-from-list":
 742                                 c = Command.InstallFromList;
 743                                 break;
 744                         case "-u":
 745                         case "/u":
 746                         case "/uf":
 747                         case "--uninstall":
 748                                 c = Command.Uninstall;
 749                                 break;
 750                         case "-ul":
 751                         case "/ul":
 752                         case "--uninstall-from-list":
 753                                 c = Command.UninstallFromList;
 754                                 break;
 755                         case "-us":
 756                         case "/us":
 757                         case "--uninstall-specific":
 758                                 c = Command.UninstallSpecific;
 759                                 break;
 760                         case "-l":
 761                         case "/l":
 762                         case "--list":
 763                                 c = Command.List;
 764                                 break;
 765                         case "-?":
 766                         case "/?":
 767                         case "--help":
 768                                 c = Command.Help;
 769                                 break;
 770                         }
 771                         return c;
 772                 }
 773
 774                 [DllImport ("libc", SetLastError=true)]
 775                 public static extern int symlink (string oldpath, string newpath);
 776
 777                 private static string GetGacDir () {
 778                         PropertyInfo gac = typeof (System.Environment).GetProperty ("GacPath",
 779                                         BindingFlags.Static|BindingFlags.NonPublic);
 780                         if (gac == null) {
 781                                 WriteLine ("ERROR: Mono runtime not detected, please use " +
 782                                                 "the mono runtime for gacutil.exe");
 783                                 Environment.Exit (1);
 784                         }
 785                         MethodInfo get_gac = gac.GetGetMethod (true);
 786                         return (string) get_gac.Invoke (null, null);
 787                 }
 788
 789                 private static string GetLibDir () {
 790                         MethodInfo libdir = typeof (System.Environment).GetMethod ("internalGetGacPath",
 791                                         BindingFlags.Static|BindingFlags.NonPublic);
 792                         if (libdir == null) {
 793                                 WriteLine ("ERROR: Mono runtime not detected, please use " +
 794                                                 "the mono runtime for gacutil.exe");
 795                                 Environment.Exit (1);
 796                         }
 797                         return Path.Combine ((string)libdir.Invoke (null, null), "mono");
 798                 }
 799
 800                 private static string GetStringToken (byte[] tok)
 801                 {
 802                         StringBuilder sb = new StringBuilder ();
 803                         for (int i = 0; i < tok.Length ; i++)
 804                                 sb.Append (tok[i].ToString ("x2"));
 805                         return sb.ToString ();
 806                 }
 807
 808                 private static string EnsureLib (string dir)
 809                 {
 810                         DirectoryInfo d = new DirectoryInfo (dir);
 811                         if (d.Name == "lib")
 812                                 return dir;
 813                         return Path.Combine (dir, "lib");
 814                 }
 815
 816                 private static void WriteLine ()
 817                 {
 818                         if (silent)
 819                                 return;
 820                         Console.WriteLine ();
 821                 }
 822
 823                 private static void WriteLine (string line)
 824                 {
 825                         if (silent)
 826                                 return;
 827                         Console.WriteLine (line);
 828                 }
 829
 830                 private static void WriteLine (string line, params object [] p)
 831                 {
 832                         if (silent)
 833                                 return;
 834                         Console.WriteLine (line, p);
 835                 }
 836
 837                 private static void Usage ()
 838                 {
 839                         ShowHelp (false);
 840                         Environment.Exit (1);
 841                 }
 842
 843                 private static void ShowHelp (bool detailed)
 844                 {
 845                         WriteLine ("Usage: gacutil.exe <commands> [ <options> ]");
 846                         WriteLine ("Commands:");
 847
 848                         WriteLine ("-i <assembly_path> [-check_refs] [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 849                         WriteLine ("\tInstalls an assembly into the global assembly cache.");
 850                         if (detailed) {
 851                                 WriteLine ("\t<assembly_path> is the name of the file that contains the " +
 852                                                 "\tassembly manifest\n" +
 853                                                 "\tExample: -i myDll.dll");
 854                         }
 855                         WriteLine ();
 856
 857                         WriteLine ("-il <assembly_list_file> [-check_refs] [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 858                         WriteLine ("\tInstalls one or more assemblies into the global assembly cache.");
 859                         if (detailed) {
 860                                 WriteLine ("\t<assembly_list_file> is the path to a test file containing a list of\n" +
 861                                                 "\tassembly file paths on separate lines.\n" +
 862                                                 "\tExample -il assembly_list.txt\n" +
 863                                                 "\t\tassembly_list.txt contents:\n" +
 864                                                 "\t\tassembly1.dll\n" +
 865                                                 "\t\tassembly2.dll");
 866                         }
 867                         WriteLine ();
 868
 869                         WriteLine ("-u <assembly_display_name> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 870                         WriteLine ("\tUninstalls an assembly from the global assembly cache.");
 871                         if (detailed) {
 872                                 WriteLine ("\t<assembly_display_name> is the name of the assembly (partial or\n" +
 873                                                 "\tfully qualified) to remove from the global assembly cache. If a \n" +
 874                                                 "\tpartial name is specified all matching assemblies will be uninstalled.\n" +
 875                                                 "\tExample: -u myDll,Version=1.2.1.0");
 876                         }
 877                         WriteLine ();
 878
 879                         WriteLine ("-ul <assembly_list_file> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 880                         WriteLine ("\tUninstalls one or more assemblies from the global assembly cache.");
 881                         if (detailed) {
 882                                 WriteLine ("\t<assembly_list_file> is the path to a test file containing a list of\n" +
 883                                                 "\tassembly names on separate lines.\n" +
 884                                                 "\tExample -ul assembly_list.txt\n" +
 885                                                 "\t\tassembly_list.txt contents:\n" +
 886                                                 "\t\tassembly1,Version=1.0.0.0,Culture=en,PublicKeyToken=0123456789abcdef\n" +
 887                                                 "\t\tassembly2,Version=2.0.0.0,Culture=en,PublicKeyToken=0123456789abcdef");
 888                         }
 889                         WriteLine ();
 890
 891                         WriteLine ("-us <assembly_path> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 892                         WriteLine ("\tUninstalls an assembly using the specifed assemblies full name.");
 893                         if (detailed) {
 894                                 WriteLine ("\t<assembly path> is the path to an assembly. The full assembly name\n" +
 895                                                 "\tis retrieved from the specified assembly if there is an assembly in\n" +
 896                                                 "\tthe GAC with a matching name, it is removed.\n" +
 897                                                 "\tExample: -us myDll.dll");
 898                         }
 899                         WriteLine ();
 900
 901                         WriteLine ("-l [assembly_name] [-root ROOTDIR] [-gacdir GACDIR]");
 902                         WriteLine ("\tLists the contents of the global assembly cache.");
 903                         if (detailed) {
 904                                 WriteLine ("\tWhen the <assembly_name> parameter is specified only matching\n" +
 905                                                 "\tassemblies are listed.");
 906                         }
 907                         WriteLine ();
 908
 909                         WriteLine ("-?");
 910                         WriteLine ("\tDisplays a detailed help screen");
 911                         WriteLine ();
 912
 913                         if (!detailed)
 914                                 return;
 915
 916                         WriteLine ("Options:");
 917                         WriteLine ("-package <NAME>");
 918                         WriteLine ("\tUsed to create a directory in prefix/lib/mono with the name NAME, and a\n" +
 919                                         "\tsymlink is created from NAME/assembly_name to the assembly on the GAC.\n" +
 920                                         "\tThis is used so developers can reference a set of libraries at once.");
 921                         WriteLine ();
 922
 923                         WriteLine ("-gacdir <GACDIR>");
 924                         WriteLine ("\tUsed to specify the GACs base directory. Once an assembly has been installed\n" +
 925                                         "\tto a non standard gacdir the MONO_GAC_PREFIX environment variable must be used\n" +
 926                                         "\tto access the assembly.");
 927                         WriteLine ();
 928
 929                         WriteLine ("-root <ROOTDIR>");
 930                         WriteLine ("\tUsed by developers integrating this with automake tools or packaging tools\n" +
 931                                         "\tthat require a prefix directory to  be specified. The root represents the\n" +
 932                                         "\t\"libdir\" component of a prefix (typically prefix/lib).");
 933                         WriteLine ();
 934
 935                         WriteLine ("-check_refs");
 936                         WriteLine ("\tUsed to ensure that the assembly being installed into the GAC does not\n" +
 937                                         "\treference any non strong named assemblies. Assemblies being installed to\n" +
 938                                         "\tthe GAC should not reference non strong named assemblies, however the is\n" +
 939                                         "\tan optional check.");
 940
 941                         WriteLine ();
 942                         WriteLine ("Ignored Options:");
 943                         WriteLine ("-f");
 944                         WriteLine ("\tThe Mono gacutil ignores the -f option to maintain commandline compatibility with");
 945                         WriteLine ("\tother gacutils. gacutil will always force the installation of a new assembly.");
 946
 947                         WriteLine ();
 948                         WriteLine ("-r <reference_scheme> <reference_id> <description>");
 949                         WriteLine ("\tThe Mono gacutil has not implemented traced references and will emit a warning");
 950                         WriteLine ("\twhen this option is used.");
 951                 }
 952         }
 953 }
 954