git.roojs.org Git - app.mailtrimmer/blob - src/strip.vala

   1 /**
   2
   3   needs to scan 2 things
   4   a) our mailfort email database
   5        point it at the top directory, containing YEAR/MONTH/DAY.... directories.
   6        scan each file (over a year old...)
   7        extract out the attachment, and replace with HTML
   8        DATABASE? - mysql or sqlite? -
   9            filesize / name / date / checksum / mimetype -- into mailfort should be OK.
  10   b) the imap user emails
  11            loop through user's directories
  12            check age of email .. over 1 years..
  13            ?? how to prevent 'repeat' scanning of emails?
  14               ??? hidden '.' files containing last scan date?
  15
  16            check if file exists in our DB.. - replace the link...
  17            otherwise generate a file. + add to DB...
  18
  19    c) retreival system
  20      -> URL -> get file
  21    d) redirect system.
  22      -> URL -> redirect to correct server
  23
  24
  25 More notes on our Mailfort DB sync:
  26 * some of these attachments are already in the database...
  27  - so we need to update the DB..
  28  - probably worth putting the code in a stored procedure..
  29
  30  -- key scenarios
  31    * first scan (and extract)
  32    * rescan (as I messed up the first time - fix the DB...)
  33    * email scan - attachments might not have related messages.
  34
  35
  36  - {id} attachment_init(
  37                 {exim_msg_id}
  38                 {chksum}
  39                 {filename),
  40         )
  41         // creates or returns id (can look for existing messages?
  42         // can do a merge?? - copy 'old' record data into 'new'....  "prefer checksummed"
  43
  44         attachment_update(
  45                 {id}
  46                 {exim_msg_id}
  47                 {mailfort_msg_sig}
  48                 {file_size}
  49                 {created} // message date..
  50                 {chksum}
  51                 {filename),
  52         {mime_type}
  53         )
  54         attachment_update_store(
  55                         {id}
  56                         {stored_filename}
  57         )
  58
  59
  60 */
  61
  62 // valac --pkg gmime --vapi
  63 /*
  64
  65 // http://www.fromdual.com/mysql-vala-program-example << check mysql if this does not work.
  66
  67  valac  -g --vapidir=. --thread  strip.vala   --vapidir=../vapi \
  68      --pkg glib-2.0 --pkg mysql --pkg gio-2.0 --pkg posix --pkg gmime-2.6 \
  69       --Xcc=-lmysqlclient  -v \
  70        -o /tmp/strip
  71 */
  72
  73 public class StripApplication : GLib.Application {
  74
  75         public static string? opt_path = null;
  76         public static string? opt_file = null;
  77         public static string? opt_target_path = null;
  78         public static string? opt_db_host = "127.0.0.1";
  79         public static string? opt_db_name = null;
  80         public static string? opt_db_user = null;
  81         public static string? opt_db_pass = null;
  82
  83         public static int    opt_limit = -1;
  84
  85         public static bool      opt_is_extracting = false;
  86         public static bool      opt_is_replacing = false;
  87         public static bool      opt_scan_imap  = false;
  88         public static bool      opt_scan_mailfort  = false;
  89         public static bool              opt_dump = false;
  90         public static bool              opt_debug = false;
  91
  92         public static bool opt_debug_sql = false;
  93         public static string? opt_replace_link = null;
  94
  95
  96         public const GLib.OptionEntry[] options = {
  97
  98                 { "debug", 0, 0, OptionArg.NONE, ref opt_debug, "show debug messages for components", null },
  99                 { "debug-sql", 0, 0, OptionArg.NONE, ref opt_debug_sql, "debug the SQL statements", null },
 100
 101                 { "path", 0, 0, OptionArg.STRING, ref opt_path, "Directory where email to be parsed is", null },
 102                 { "file", 0, 0, OptionArg.STRING, ref opt_file, "A specific file to be parsed", null },
 103
 104                 { "target-path", 0, 0, OptionArg.STRING, ref opt_target_path, "Directory where attachments are to be put", null },
 105
 106                 { "link", 0, 0, OptionArg.STRING, ref opt_replace_link, "url for the replement link: eg. http://www.mysite.com/xxxx/%s", null },
 107
 108                 { "host", 0, 0, OptionArg.STRING, ref opt_db_host, "Mysql host (default localhost)", null },
 109                 { "name", 0, 0, OptionArg.STRING, ref opt_db_name, "Mysql database name REQUIRED", null },
 110                 { "user", 0, 0, OptionArg.STRING, ref opt_db_user, "Mysql database user REQUIRED", null },
 111                 { "pass", 0, 0, OptionArg.STRING, ref opt_db_pass, "Mysql database password (default empty)", null },
 112
 113                 { "extract", 0, 0, OptionArg.NONE, ref opt_is_extracting, "Should attachments be extracted (default NO)", null },
 114                 { "replace", 0, 0, OptionArg.NONE, ref opt_is_replacing, "Should attachments be replaced (default NO)", null },
 115                 { "dump", 0, 0, OptionArg.NONE, ref opt_dump, "Print the replaced mail contents to stdout", null },
 116
 117                 { "limit", 0, 0, OptionArg.INT, ref opt_limit, "stop after X number of messages with attachments have been processed", null },
 118
 119                 { "scan-imap", 0, 0, OptionArg.NONE, ref opt_scan_imap, "scan an imap tree", null },
 120                 { "scan-mailfort", 0, 0, OptionArg.NONE, ref opt_scan_mailfort, "scan a mailfort tree", null },
 121                 { null }
 122         };
 123     public StripApplication( string[] args )
 124     {
 125                  Object(
 126             application_id: "org.roojs.mailstripper",
 127             flags: ApplicationFlags.FLAGS_NONE
 128          );
 129
 130
 131          var opt_context =  new GLib.OptionContext ("Mail Stripper");
 132
 133          try {
 134
 135             opt_context.set_help_enabled (true);
 136             opt_context.add_main_entries (options, null);
 137             opt_context.parse ( ref  args);
 138             //opt_detach = !optx_no_detach;
 139
 140
 141
 142              // options that have to be set.. bee or hive... (or stop all)
 143             if ((!opt_scan_mailfort && !opt_scan_imap) || (opt_scan_mailfort && opt_scan_imap))  {
 144                stdout.printf ("You must specify the type of directory tree to scan - either imap or mailfort\n%s",
 145                    opt_context.get_help(true, null));
 146                GLib.Process.exit(Posix.EXIT_FAILURE);
 147             }
 148
 149                          if ((opt_db_name == null || opt_db_name.length < 1 || opt_db_user == null || opt_db_user.length < 1))  {
 150                stdout.printf ("You must specify the database name / user \n%s",
 151                    opt_context.get_help(true, null));
 152                GLib.Process.exit(Posix.EXIT_FAILURE);
 153             }
 154                          if ((opt_path == null || opt_path.length < 1)   )  {
 155                stdout.printf ("You must specify the scan start path\n%s",
 156                    opt_context.get_help(true, null));
 157                GLib.Process.exit(Posix.EXIT_FAILURE);
 158             }
 159                         if (opt_replace_link == null || (opt_replace_link.length < 1))  {
 160                stdout.printf ("You must specify the link to use in the replacement \n%s",
 161                    opt_context.get_help(true, null));
 162                GLib.Process.exit(Posix.EXIT_FAILURE);
 163             }
 164             if ((opt_is_replacing || opt_is_extracting ) && (opt_target_path == null || opt_target_path.length < 1)) {
 165                       stdout.printf ("You must specify a target path to put attachments\n%s",
 166                    opt_context.get_help(true, null));
 167                GLib.Process.exit(Posix.EXIT_FAILURE);
 168             }
 169
 170
 171          } catch (GLib.OptionError e) {
 172             stdout.printf ("error: %s\n", e.message);
 173             stdout.printf ("Run '%s --help' to see a full list of available command line options.\n%s",
 174                       args[0], opt_context.get_help(true, null));
 175             GLib.Process.exit(Posix.EXIT_FAILURE);
 176          }
 177         }
 178
 179     public static int main(string[] args)
 180     {
 181
 182                 var application = new StripApplication(  args);
 183
 184                 GLib.Log.set_always_fatal(LogLevelFlags.LEVEL_ERROR | LogLevelFlags.LEVEL_CRITICAL);
 185
 186            if (opt_debug || opt_debug_sql) {
 187                         GLib.Log.set_handler(null,
 188                         GLib.LogLevelFlags.LEVEL_DEBUG | GLib.LogLevelFlags.LEVEL_WARNING | GLib.LogLevelFlags.LEVEL_INFO,
 189                         (dom, lvl, msg) => {
 190                                         print("%s\n", msg);
 191                                 }
 192                         );
 193                 }
 194
 195         GMime.init(0);
 196                 if (StripApplication.opt_is_replacing) {
 197                         StripApplication.opt_is_extracting = true;
 198                 }
 199
 200                 GLib.debug("scanning folder: %s", opt_path );
 201
 202                 var strip = new Strip( opt_path );
 203
 204
 205                 strip.mysql  = new Mysql.Database();
 206                 if (!strip.mysql.real_connect(
 207                                 opt_db_host,
 208                                 opt_db_user ,
 209                                 opt_db_pass == null ? "" : opt_db_pass, //passwd
 210                                 opt_db_name, //DB
 211                                 3306, // not changable...?
 212                                 null
 213                         )
 214                 ) {
 215                         stdout.printf("ERROR %u: Connection failed: %s\n",
 216                                 strip.mysql.errno(), strip.mysql.error()
 217                         );
 218                         return 1;
 219                 }
 220         if (opt_file != null) {
 221                 strip.base_dir = opt_path;
 222                 strip.scan_file( GLib.Path.get_dirname(opt_file),  GLib.Path.get_basename(opt_file));
 223                 return 0;
 224         }
 225
 226                 strip.scan_dir(opt_path);
 227
 228
 229
 230         return 0;
 231     }
 232 }
 233
 234 public class Strip : GLib.Object {
 235
 236
 237
 238         public string base_dir = "";
 239
 240         public Mysql.Database mysql;
 241
 242         int processed = 0;
 243
 244     uint64 used_space_before = 0;
 245     uint64 used_space_after = 0;
 246
 247
 248     public Strip(string base_dir)
 249     {
 250         this.base_dir = base_dir;
 251     }
 252
 253     public void handle_part(GMime.Object parent, GMime.Object mime_obj)
 254     {
 255                 if (mime_obj is GMime.Part) {
 256                    var  p = (GMime.Part)mime_obj;
 257                         var ct = p.get_content_type();
 258                         var cd = p.get_content_disposition();
 259
 260                         var sid = p.get_header("X-strip-id");
 261                     if (sid != null && sid.length > 0) {
 262                         this.update_attachment_db(p);
 263                             GLib.debug("Skip attachment replace - it's already been done");
 264                         return;
 265                         }
 266
 267                         if (cd == null || cd.get_disposition().down() != "attachment") {
 268                                 return;
 269                         }
 270                         if (ct.get_media_type() == "text") {
 271                                 return;
 272                         }
 273                         if (ct.to_string() == "application/pgp-encrypted") {
 274                                 return;
 275                         }
 276                         if (ct.to_string() == "application/pgp-keys") {
 277                                 return;
 278                         }
 279                         if (p.get_filename() == null) {
 280                                 return;
 281                         }
 282                          // print("got part %s\n", ct.to_string());
 283                          if (parent is GMime.Multipart) {
 284
 285                                 this.replace_attachment(((GMime.Multipart)parent), p);
 286                                 // remove it !?
 287
 288                           }
 289
 290
 291                         return;
 292                 }
 293                 if (mime_obj is GMime.Multipart) {
 294
 295
 296                         var  mp = (GMime.Multipart)mime_obj;
 297                         //var ct = mp.get_content_type();
 298
 299                         //print("got multi-part %s\n", ct.to_string());
 300                         for (var i = 0; i< mp.get_count(); i++) {
 301                           var mo = mp.get_part(i);
 302                           this.handle_part(mime_obj,mo);
 303                         }
 304                    // ((GMime.Multipart)mime_obj).foreach((sub_obj) => {
 305                    //     Strip.handle_part(sub_obj);
 306                 //
 307                    // });
 308
 309
 310                         return;
 311                 }
 312
 313                 if (mime_obj is GMime.MessagePart) {
 314                         var msg = ((GMime.MessagePart)mime_obj).get_message();
 315                         msg.foreach((subobj) => {
 316                          this.handle_part(msg,subobj);
 317                     });
 318
 319                         //print("got message-part\n");
 320                         return;
 321                 }
 322
 323                 if (mime_obj is GMime.Message) {
 324                         var mp = ((GMime.Message) mime_obj).get_mime_part();
 325
 326                         if (!(mp is GMime.Multipart)) {
 327                                 GLib.debug("get mimepart does not return a Multipart?");
 328                                 return;
 329                         }
 330
 331                         var mpc = ((GMime.Multipart)mp).get_count();
 332
 333                         //GLib.debug("Message has %d parts", mpc);
 334                         for (var i =0 ; i < mpc; i++) {
 335                                 //GLib.debug("Getting part %d", i);
 336                                 var submime_obj = ((GMime.Multipart)mp).get_part(i);
 337                         this.handle_part(mp,submime_obj);
 338                     }
 339                         print("got message??\n");
 340                         return;
 341                 }
 342
 343                 print("got something else\n");
 344
 345
 346     }
 347     public void update_attachment_db(GMime.Part attachment)
 348     {
 349         // only called when we have an sid...
 350         var sid = attachment.get_header("X-strip-id");
 351         if (sid == null || sid.length < 1) {
 352                 GLib.debug("Strange - update attachment db called ?");
 353                 return;
 354         }
 355         this.query("""
 356                 SELECT attachment_update(
 357                                 %d, -- in_id INT(11),
 358                                 '%s', -- in_mime_type varchar(255),
 359                                 %d, -- in_mime_size int(11),
 360                                 '%s', -- in_created DATETIME,
 361                                 '%s' -- in_mailfort_sig varchar(64)
 362
 363                     )""
 364
 365
 366               """.printf(
 367                         int.parse(sid),
 368                         "", // this will be ignored..
 369                         0, // this will be ingored..
 370                                 this.created_date,
 371                                 this.mysql_escape(this.active_message_x_mailfort_sig)
 372
 373               )
 374                 );
 375
 376
 377
 378     }
 379
 380
 381     public void replace_attachment(GMime.Multipart parent, GMime.Part attachment)
 382     {
 383         var sid = attachment.get_header("X-strip-id");
 384         if (sid != null && sid.length > 0) {
 385                 GLib.debug("Skip attachment replace - it's already been done");
 386                 return;
 387         }
 388
 389         var c = attachment.get_content_object();
 390
 391         var filename = attachment.get_filename().replace("/", "-");
 392         var fn = GLib.Environment.get_tmp_dir() +
 393                         "/"+ this.active_name + "."+   filename;
 394
 395             var outfile = new GMime.StreamFile.for_path(fn, "w");
 396             outfile.set_owner(true);
 397             var file_size = (int) c.write_to_stream(outfile);
 398             var chksum = this.md5_file(fn);
 399             outfile.flush();
 400             outfile = null;
 401
 402         if (file_size == 0) {
 403
 404                 GLib.debug("ERROR - file size of write to stream returned 0?");
 405                 Posix.unlink(fn);
 406                 return;
 407         }
 408
 409
 410
 411
 412         var mime_type= attachment.get_content_type().to_string();
 413         // at this point we have to do our database magic...
 414         //filesize / name / date / checksum / mimetype -- into mailfort should be OK.
 415
 416         this.query("""
 417                 SELECT
 418
 419                 attachment_init(
 420                                 '%s', -- in_msgid VARCHAR(32),
 421                                 '%s', -- in_checksum VARCHAR(64),
 422                                 '%s', -- in_mime_filename varchar(255)
 423                                 %d -- filesize
 424                         ) as id
 425
 426           """.printf(
 427                         this.mysql_escape(this.active_message_exim_id),
 428                         chksum,
 429                         this.mysql_escape( attachment.get_filename() ), // what is thsi is invalid?
 430                          file_size)
 431                 );
 432                 var file_id = "0";
 433         var rs = mysql.use_result();
 434
 435                 var row = rs.fetch_row();
 436
 437                 var target_fn = "";
 438
 439                 //var create_dir = this.created_dir;
 440
 441
 442                 if (rs != null  && rs.num_rows() > 0) {
 443                         file_id =  row[0];
 444                         //create_dir = row[1];
 445                         //GLib.debug("msgid %s", row[2]);
 446
 447                         this.used_space_after += file_size;
 448                         if (StripApplication.opt_is_extracting) {
 449                                 target_fn = StripApplication.opt_target_path + "/" + this.created_dir +"/"+ file_id  + "-" + filename;
 450                         }
 451
 452
 453                 } else {
 454
 455                         GLib.debug("fn = %s, m5=%s, id= %s", filename, mime_type, this.active_message_id);
 456                         this.query("""
 457
 458                         SELECT attachment_update(
 459                                 %d, -- in_id INT(11),
 460                                 '%s', -- in_mime_type varchar(255),
 461                                 %d, -- in_mime_size int(11),
 462                                 '%s', --in_created DATETIME,
 463                                 '%s', -- in_mailfort_sig varchar(64)
 464
 465                                 ) as result
 466
 467
 468                         INSERT INTO
 469                                         Attachment
 470                                 (
 471                                          queue_id,
 472                                          mime_charset,
 473                                          mime_cdisp,
 474                                          mime_size,
 475
 476                                          mime_is_cover,
 477                                          mime_is_multi,
 478                                          mime_is_mail,
 479
 480                                          msgid,
 481                                          maillog_id,
 482                                          delivered,
 483
 484
 485                                          checksum,
 486                                          filesize,
 487                                          stored_filename,
 488
 489                                          created,
 490                                          mime_filename,
 491                                          mime_type,
 492
 493
 494                                 )
 495                                         VALUES
 496                                 (
 497                                          COALESCE((SELECT id from MailQueue where msgid = '%s' AND message_sig = '%s' AND  msgid != '' AND message_sig != '' LIMIT 1),0),
 498                                          '%s',
 499                                          '%s',
 500                                          %d,
 501
 502                                          0,
 503                                          0,
 504                                          0,
 505
 506                                          '%s',
 507                                          COALESCE((SELECT id from email_log where msgid = '%s' AND message_sig = '%s' AND  msgid != '' AND message_sig != '' LIMIT 1),0),
 508                                         '%s',
 509
 510                                          '%s',
 511                                          %d,
 512                                          '%s',
 513
 514                                          '%s',
 515                                          '%s',
 516                                          '%s'
 517
 518                                 )
 519
 520                       """.printf(
 521                                 this.mysql_escape(this.active_message_exim_id), this.mysql_escape(this.active_message_x_mailfort_sig),
 522                                 "",
 523                                 "attachment",
 524                                  file_size,
 525
 526                                 this.mysql_escape(this.active_message_exim_id), // msgid ?
 527                                 this.mysql_escape(this.active_message_exim_id), this.mysql_escape(this.active_message_x_mailfort_sig), // maillog_id
 528                                 this.created_date, // delivered (from lookup)
 529
 530                                          chksum,
 531                                          file_size,
 532                                          "", // filled in after we find out the id..
 533
 534                                          this.created_date,
 535                                          this.mysql_escape(filename),
 536                                          this.mysql_escape(mime_type)
 537
 538
 539
 540
 541                       )
 542                         );
 543                         this.used_space_after += file_size;
 544
 545                         var file_id_real = this.mysql.insert_id();
 546                         GLib.debug("Got file_id = %d\n", (int)file_id_real);
 547                         if (file_id_real == 0) {
 548                                 GLib.Process.exit(1);
 549                         }
 550                         file_id = "%d".printf((int)file_id_real);
 551
 552
 553
 554                    if (StripApplication.opt_is_extracting) {
 555                                 target_fn = StripApplication.opt_target_path + "/" + this.created_dir +"/"+ file_id  + "-" + filename;
 556                         }
 557
 558                     var stored =  "/" + this.created_dir +"/"+ file_id  + "-" + filename;
 559
 560                         this.query("""
 561                                 UPDATE
 562                                         Attachment
 563                                 SET
 564                                         stored_filename = '%s'
 565                                 WHERE
 566                                         id = %s
 567                         """.printf(
 568                                 this.mysql_escape( stored),
 569                                 file_id
 570                         ));
 571
 572                 }
 573
 574         var rep = new GMime.Part.with_type("text","html");
 575         // we have to set up a redirect server - to redirect hpasite... to their internal service..
 576         rep.set_filename(filename);
 577         var txt = "<html><body>"+
 578             "<a href=\"" + StripApplication.opt_replace_link + "/" +
 579                         file_id + "/" + create_dir + "/"+chksum+"/"+ GLib.Uri.escape_string( filename) +"\">" +
 580             GLib.Uri.escape_string( filename) + // fixme needs html escaping...
 581             "</a>" +
 582             "</body></html>";
 583
 584         rep.get_content_type().set_parameter("charset", "utf-8");
 585                 rep.set_header("X-strip-id", file_id);
 586                 rep.set_header("X-strip-content-name",  filename);
 587                 rep.set_header("X-strip-path", create_dir + "/" + file_id + "-" + filename);
 588                 rep.set_header("X-strip-content-type", mime_type);
 589         var stream =  new GMime.StreamMem.with_buffer(txt.data);
 590         var con = new GMime.DataWrapper.with_stream(stream,GMime.ContentEncoding.DEFAULT);
 591
 592         rep.set_content_object(con);
 593         GLib.debug("Replacing Attachment with HTML");
 594         parent.replace(parent.index_of(attachment), rep);
 595                 this.has_replaced = true;
 596
 597                 if (StripApplication.opt_is_extracting && target_fn.length > 0) {
 598                         var dir = GLib.Path.get_dirname(target_fn);
 599                         if (!FileUtils.test (dir, FileTest.IS_DIR)) {
 600                                 GLib.DirUtils.create_with_parents(dir, 0755);
 601                         }
 602                         GLib.debug("Creating file %s", target_fn);
 603                         if (!FileUtils.test (target_fn, FileTest.EXISTS)) {
 604                                 Posix.link(fn, target_fn);
 605                         }
 606                 } else {
 607                         GLib.debug("Skipping extraction %s", target_fn);
 608                 }
 609                 Posix.unlink(fn);
 610
 611
 612
 613     }
 614
 615     public int query(string str)
 616     {
 617         if (StripApplication.opt_debug_sql) {
 618                 GLib.debug("SQL: %s\n", str);
 619                 }
 620
 621         var rc=  this.mysql.query(str);
 622         if ( rc != 0 ) {
 623
 624                     GLib.debug("ERROR %u: Query failed: %s\n", this.mysql.errno(), this.mysql.error());
 625                 }
 626                 return rc;
 627         }
 628
 629     public string mysql_escape(string str)
 630     {
 631             unichar[] value_escaped = new unichar[str.length * 2 + 1];
 632                 this.mysql.real_escape_string ((string) value_escaped, str, str.length);
 633                 return (string) value_escaped;
 634     }
 635
 636     public string  md5_file(string fn) {
 637               Checksum checksum = new Checksum (ChecksumType.MD5);
 638
 639               FileStream stream = FileStream.open (fn, "rb");
 640               uint8 fbuf[100];
 641               size_t size;
 642
 643               while ((size = stream.read (fbuf)) > 0) {
 644                       checksum.update (fbuf, size);
 645               }
 646
 647               unowned string digest = checksum.get_string ();
 648               return digest;
 649     }
 650
 651         string active_path = "";
 652     string active_name = "";
 653     string active_message_id = "";
 654     string active_message_x_mailfort_sig = "";
 655     string active_message_exim_id = "";
 656     bool has_replaced = false;
 657     string created_date = ""; // should be YYYY-mm-dd
 658     string created_dir = ""; // should be YYY/mm/dd
 659
 660     public void scan_file(string path, string name)
 661     {
 662                 GLib.debug("Scan: %s/%s", path,name);
 663
 664                 this.has_replaced = false;
 665         this.active_path = path;
 666         this.active_name = name;
 667         this.active_message_id = "";
 668
 669         this.created_dir = this.active_path.substring(this.base_dir.length + 1 );
 670                 this.created_date = this.created_dir.replace("/", "-");
 671
 672         var file_size = (int) File.new_for_path(path +"/" + name)
 673                                         .query_info(GLib.FileAttribute.STANDARD_SIZE,GLib.FileQueryInfoFlags.NONE,null)
 674                                         .get_size();
 675
 676         this.used_space_before += file_size;
 677
 678         var stream = new GMime.StreamFs.for_path (path +"/" + name,Posix.O_RDONLY, 0);
 679         //stream.set_owner(true);
 680         var parser = new GMime.Parser.with_stream(stream);
 681         var message = parser.construct_message();
 682
 683                 if (message == null) {
 684                         GLib.debug("Could not parse file? %s/%s", path,name);
 685                 this.used_space_after += file_size;
 686                 return;
 687                 }
 688
 689
 690                 // check : - is message over a year old?
 691                 // get various msg info..
 692                 this.active_message_id = message.get_message_id();
 693                 this.active_message_x_mailfort_sig = message.get_header("x-mailfort-sig");
 694                 var recvd = message.get_header("received");
 695                 this.active_message_exim_id = "";
 696                 if (recvd != null && recvd.length > 1) {
 697                         GLib.debug("RECV: %s", recvd);
 698                         var lines = recvd.split("\t");
 699                         for (var i = 0; i < lines.length;i++) {
 700                                 var bits = lines[i].strip().split(" ");
 701                                 if (bits[0] == "id") {
 702                                         this.active_message_exim_id = bits[1];
 703                                 }
 704                         }
 705                 }
 706                 GLib.debug("Message DATA:\n mid: %s\nmailfort: %s \nexim_id: %s",
 707                         this.active_message_id,
 708                         this.active_message_x_mailfort_sig,
 709                         this.active_message_exim_id
 710                 );
 711
 712
 713                 // DATE?
 714
 715                 var mp = message.get_mime_part();
 716
 717                 if (!(mp is GMime.Multipart)) {
 718                         GLib.debug("get mimepart does not return a Multipart?");
 719                 this.used_space_after += file_size;
 720                         return;
 721                 }
 722
 723                 var mpc = ((GMime.Multipart)mp).get_count();
 724
 725                 //GLib.debug("Message has %d parts", mpc);
 726                 for (var i =0 ; i < mpc; i++) {
 727                         //GLib.debug("Getting part %d", i);
 728                         var mime_obj = ((GMime.Multipart)mp).get_part(i);
 729             this.handle_part(mp,mime_obj);
 730         }
 731
 732         parser= null;
 733
 734       //  stream.set_owner(false);
 735             //stream.close();
 736         stream = null;//.close();
 737
 738
 739                 if (!this.has_replaced) {
 740                         this.used_space_after += file_size;
 741                         GLib.debug("skpping write file - no replacement occured");
 742                         return;
 743                 }
 744                 string tmpfile = "";
 745                 GMime.Stream outstream = new GMime.StreamNull();
 746                 if (StripApplication.opt_is_replacing) {
 747
 748                         tmpfile = GLib.Environment.get_tmp_dir() +"/" + name;
 749                 outstream = new GMime.StreamFile.for_path (tmpfile,"w");
 750                 ((GMime.StreamFile)outstream).set_owner(true);
 751         }
 752                 if (StripApplication.opt_dump) {
 753                         outstream = new GMime.StreamMem();
 754         }
 755
 756         file_size = (int) message.write_to_stream(outstream);
 757         if (StripApplication.opt_is_replacing) {
 758                 ((GMime.StreamFile)outstream).set_owner(false);
 759         }
 760                 if (StripApplication.opt_dump) {
 761                         var ua = ((GMime.StreamMem)outstream).get_byte_array().data;
 762                         print("%s\n", (string) ua);
 763                 }
 764         message = null;
 765         outstream.flush();
 766         outstream.close();
 767         GLib.debug("finished writing output %d", file_size);
 768
 769         //
 770
 771
 772         this.used_space_after += file_size;
 773
 774
 775         if (StripApplication.opt_is_replacing) {
 776                 Posix.unlink(path +"/" + name);
 777                 GLib.debug("copy tmp file %s to %s" , tmpfile, path +"/" + name);
 778                 Posix.link(tmpfile, path +"/" + name);
 779                 Posix.unlink(tmpfile);
 780                 }
 781         this.processed++;
 782
 783         if (StripApplication.opt_limit > -1 && this.processed >= StripApplication.opt_limit) {
 784                 GLib.debug("Reached replacement limit");
 785                 Posix.exit(1);
 786         }
 787
 788
 789
 790
 791     }
 792
 793
 794     public void scan_dir(string path)
 795     {
 796         var f = File.new_for_path(path);
 797                 FileEnumerator file_enum;
 798         var cancellable = new Cancellable ();
 799         try {
 800             file_enum = f.enumerate_children(
 801                 FileAttribute.STANDARD_DISPLAY_NAME + "," +   FileAttribute.STANDARD_TYPE,
 802                         FileQueryInfoFlags.NOFOLLOW_SYMLINKS,  // FileQueryInfoFlags.NONE,
 803                         cancellable
 804                 );
 805         } catch (Error e) {
 806                 GLib.debug("Got error scanning dir? %s", e.message);
 807             // FIXME - show error..
 808             return;
 809         }
 810         FileInfo next_file;
 811
 812         while (cancellable.is_cancelled () == false ) {
 813             try {
 814                 next_file = file_enum.next_file (cancellable);
 815             } catch(Error e) {
 816                 GLib.debug("error getting next file? %s", e.message);
 817                 break;
 818             }
 819
 820             if (next_file == null) {
 821                 break;
 822             }
 823
 824
 825             if (next_file.get_file_type() != FileType.DIRECTORY) {
 826
 827                 if (next_file.get_display_name()[0] == ',') {
 828                         continue;
 829                 }
 830
 831                 this.scan_file(path , next_file.get_display_name());
 832                 this.report_state("After scanning %s/%s".printf(path , next_file.get_display_name()));
 833                 continue;
 834             }
 835
 836
 837             //stdout.printf("Monitor.monitor: got file %s : type :%u\n",
 838             //        next_file.get_display_name(), next_file.get_file_type());
 839
 840
 841             if (next_file.get_is_symlink()) {
 842                 next_file = null;
 843                 continue;
 844             }
 845
 846             var ds = next_file.get_display_name();
 847             if (ds[0] == '.') {
 848                 next_file = null;
 849                 continue;
 850             }
 851             if (ds == "attachments") {
 852                         continue;
 853                 }
 854
 855
 856             var sp = path+"/"+next_file.get_display_name();
 857             // skip modules.
 858             //print("got a file : " + sp);
 859
 860             next_file = null;
 861
 862
 863             this.scan_dir(sp);
 864
 865         }
 866
 867
 868     }
 869     void report_state(string msg)
 870     {
 871         // Saved: 2G  Original 10G : 20%
 872         GLib.debug("Saved : %s (%.1f%%) | Original %s | %s",
 873                         GLib.format_size(this.used_space_before - this.used_space_after),
 874                         100f * ((1f * (this.used_space_before - this.used_space_after)) / (this.used_space_before * 1f)),
 875                         GLib.format_size(this.used_space_before),
 876                         msg
 877                 );
 878
 879         }
 880
 881
 882
 883 }