source3/modules/vfs_smb_traffic_analyzer.c

   1 /*
   2  * traffic-analyzer VFS module. Measure the smb traffic users create
   3  * on the net.
   4  *
   5  * Copyright (C) Holger Hetterich, 2008
   6  * Copyright (C) Jeremy Allison, 2008
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23 #include "../lib/crypto/crypto.h"
  24
  25 /* abstraction for the send_over_network function */
  26 enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
  27
  28 #define LOCAL_PATHNAME "/var/tmp/stadsocket"
  29
  30 /* VFS Functions identifier table. In protocol version 2, every vfs     */
  31 /* function is given a unique id.                                       */
  32 enum vfs_id {
  33         /* care for the order here, required for compatibility  */
  34         /* with protocol version 1.                             */
  35         vfs_id_read,
  36         vfs_id_pread,
  37         vfs_id_write,
  38         vfs_id_pwrite,
  39         /* end of protocol version 1 identifiers.               */
  40         vfs_id_mkdir,
  41         vfs_id_rmdir,
  42         vfs_id_rename,
  43         vfs_id_chdir
  44 };
  45
  46 /* Specific data sets for the VFS functions.                            */
  47
  48 struct mkdir_data {
  49         const char *path;
  50         mode_t mode;
  51         int result;
  52 };
  53
  54 struct rmdir_data {
  55         const char *path;
  56         int result;
  57 };
  58
  59 struct rename_data {
  60         const char *src;
  61         const char *dst;
  62         int result;
  63 };
  64
  65 struct chdir_data {
  66         const char *path;
  67         int result;
  68 };
  69
  70 /* rw_data used for read/write/pread/pwrite                             */
  71 struct rw_data {
  72         char *filename;
  73         size_t len;
  74 };
  75
  76
  77 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
  78
  79 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
  80 {
  81         connection_struct *conn = handle->conn;
  82         const char *Mode;
  83         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
  84                         "internet_socket");
  85         if (strstr(Mode,"unix_domain_socket")) {
  86                 return UNIX_DOMAIN_SOCKET;
  87         } else {
  88                 return INTERNET_SOCKET;
  89         }
  90 }
  91
  92
  93 /* Connect to an internet socket */
  94
  95 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
  96                                         const char *name, uint16_t port)
  97 {
  98         /* Create a streaming Socket */
  99         int sockfd = -1;
 100         struct addrinfo hints;
 101         struct addrinfo *ailist = NULL;
 102         struct addrinfo *res = NULL;
 103         int ret;
 104
 105         ZERO_STRUCT(hints);
 106         /* By default make sure it supports TCP. */
 107         hints.ai_socktype = SOCK_STREAM;
 108         hints.ai_flags = AI_ADDRCONFIG;
 109
 110         ret = getaddrinfo(name,
 111                         NULL,
 112                         &hints,
 113                         &ailist);
 114
 115         if (ret) {
 116                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
 117                         "getaddrinfo failed for name %s [%s]\n",
 118                         name,
 119                         gai_strerror(ret) ));
 120                 return -1;
 121         }
 122
 123         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
 124                 "Port: %i\n", name, port));
 125
 126         for (res = ailist; res; res = res->ai_next) {
 127                 struct sockaddr_storage ss;
 128                 NTSTATUS status;
 129
 130                 if (!res->ai_addr || res->ai_addrlen == 0) {
 131                         continue;
 132                 }
 133
 134                 ZERO_STRUCT(ss);
 135                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
 136
 137                 status = open_socket_out(&ss, port, 10000, &sockfd);
 138                 if (NT_STATUS_IS_OK(status)) {
 139                         break;
 140                 }
 141         }
 142
 143         if (ailist) {
 144                 freeaddrinfo(ailist);
 145         }
 146
 147         if (sockfd == -1) {
 148                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 149                         "socket, error is %s",
 150                         strerror(errno)));
 151                 return -1;
 152         }
 153
 154         return sockfd;
 155 }
 156
 157 /* Connect to a unix domain socket */
 158
 159 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 160                                                 const char *name)
 161 {
 162         /* Create the socket to stad */
 163         int len, sock;
 164         struct sockaddr_un remote;
 165
 166         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 167                         "Unix domain socket mode. Using %s\n",
 168                         name ));
 169
 170         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 171                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 172                         "Couldn't create socket, "
 173                         "make sure stad is running!\n"));
 174                 return -1;
 175         }
 176         remote.sun_family = AF_UNIX;
 177         strlcpy(remote.sun_path, name,
 178                     sizeof(remote.sun_path));
 179         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 180         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 181                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 182                         "Could not connect to "
 183                         "socket, make sure\nstad is running!\n"));
 184                 close(sock);
 185                 return -1;
 186         }
 187         return sock;
 188 }
 189
 190 /* Private data allowing shared connection sockets.     */
 191
 192 struct refcounted_sock {
 193         struct refcounted_sock *next, *prev;
 194         char *name;
 195         uint16_t port;
 196         int sock;
 197         unsigned int ref_count;
 198 };
 199
 200
 201 /* The marshaller for the protocol version 2.           */
 202 static char *smb_traffic_analyzer_create_string( struct tm *tm, \
 203         int seconds, vfs_handle_struct *handle, \
 204         char *username, int count, ... )
 205 {
 206
 207         va_list ap;
 208         char *arg = NULL;
 209         char *str = NULL;
 210         int len;
 211         char *header = NULL;
 212         char *buf = NULL;
 213         char *timestr = NULL;
 214
 215         /* first create the data that is transfered with any VFS op     */
 216         len = strlen( username );
 217         buf = talloc_asprintf(talloc_tos(),"%04u%s", len, username);
 218         len = strlen( handle->conn->connectpath );
 219         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 220                 handle->conn->connectpath );
 221         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 222         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 223                 pdb_get_domain(handle->conn->server_info->sam_account) );
 224         timestr = talloc_asprintf(talloc_tos(), \
 225                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 226                 tm->tm_year+1900, \
 227                 tm->tm_mon+1, \
 228                 tm->tm_mday, \
 229                 tm->tm_hour, \
 230                 tm->tm_min, \
 231                 tm->tm_sec, \
 232                 (int)seconds);
 233         len = strlen( timestr );
 234         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 235
 236         va_start( ap, count );
 237         while ( count-- ) {
 238                 arg = va_arg( ap, char * );
 239                 /* protocol v2 sends a four byte string */
 240                 /* as a header to each block, including */
 241                 /* the numbers of bytes to come in the  */
 242                 /* next string.                         */
 243                 len = strlen( arg );
 244                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 245         }
 246         va_end( ap );
 247
 248         /* now create the protocol v2 header.   */
 249         len = strlen( buf );
 250         str = talloc_asprintf_append( str, "V2,%017u%s", len, buf);
 251         DEBUG(10, ("smb_traffic_analyzer_create_string: %s\n",str));
 252         return str;
 253 }
 254
 255 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 256                                         void *data,
 257                                         enum vfs_id vfs_operation )
 258 {
 259         struct refcounted_sock *rf_sock = NULL;
 260         struct timeval tv;
 261         time_t tv_sec;
 262         struct tm *tm = NULL;
 263         int seconds;
 264         char *str = NULL;
 265         char *username = NULL;
 266         const char *anon_prefix = NULL;
 267         const char *total_anonymization = NULL;
 268         const char *protocol_version = NULL;
 269         bool Write = false;
 270         size_t len;
 271
 272         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 273
 274         if (rf_sock == NULL || rf_sock->sock == -1) {
 275                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 276                         "closed\n"));
 277                 return;
 278         }
 279
 280         GetTimeOfDay(&tv);
 281         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 282         tm = localtime(&tv_sec);
 283         if (!tm) {
 284                 return;
 285         }
 286         seconds=(float) (tv.tv_usec / 1000);
 287
 288         /* check if anonymization is required */
 289
 290         total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
 291                                         "total_anonymization", NULL);
 292
 293         anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
 294                                         "anonymize_prefix", NULL );
 295         if (anon_prefix!=NULL) {
 296                 if (total_anonymization!=NULL) {
 297                         username = talloc_asprintf(talloc_tos(),
 298                                 "%s",
 299                                 anon_prefix);
 300                 } else {
 301                         username = talloc_asprintf(talloc_tos(),
 302                                 "%s%i",
 303                                 anon_prefix,
 304                                 str_checksum(
 305                                         handle->conn->server_info->sanitized_username ) );
 306                 }
 307
 308         } else {
 309                 username = handle->conn->server_info->sanitized_username;
 310         }
 311
 312         if (!username) {
 313                 return;
 314         }
 315
 316         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 317                 "smb_traffic_analyzer",
 318                 "protocol_version", NULL );
 319
 320         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 321
 322                 struct rw_data *s_data = (struct rw_data *) data;
 323
 324                 /* in case of protocol v1, ignore any vfs operations    */
 325                 /* except read,pread,write,pwrite, and set the "Write"  */
 326                 /* bool accordingly.                                    */
 327
 328                 if ( vfs_operation > vfs_id_pwrite ) return;
 329
 330                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 331                         else Write=true;
 332
 333                 str = talloc_asprintf(talloc_tos(),
 334                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 335                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 336                         (unsigned int) s_data->len,
 337                         username,
 338                         pdb_get_domain(handle->conn->server_info->sam_account),
 339                         Write ? 'W' : 'R',
 340                         handle->conn->connectpath,
 341                         s_data->filename,
 342                         tm->tm_year+1900,
 343                         tm->tm_mon+1,
 344                         tm->tm_mday,
 345                         tm->tm_hour,
 346                         tm->tm_min,
 347                         tm->tm_sec,
 348                         (int)seconds);
 349         } else if ( strcmp( protocol_version, "V2") == 0) {
 350
 351                 switch( vfs_operation ) {
 352                 case vfs_id_mkdir: ;
 353                         str = smb_traffic_analyzer_create_string( tm, \
 354                                 seconds, handle, username, 3,\
 355                                 ((struct mkdir_data *) data)->path, \
 356                                 talloc_asprintf( talloc_tos(), "%u", \
 357                                 ((struct mkdir_data *) data)->mode), \
 358                                 talloc_asprintf( talloc_tos(), "%u", \
 359                                 ((struct mkdir_data *) data)->result ));
 360                         break;
 361                 case vfs_id_rmdir: ;
 362                         str = smb_traffic_analyzer_create_string( tm, \
 363                                 seconds, handle, username, 2,\
 364                                 ((struct rmdir_data *) data)->path, \
 365                                 talloc_asprintf( talloc_tos(), "%u", \
 366                                 ((struct rmdir_data *) data)->result ));
 367                         break;
 368                 case vfs_id_rename: ;
 369                         str = smb_traffic_analyzer_create_string( tm, \
 370                                 seconds, handle, username, 3,\
 371                                 ((struct rename_data *) data)->src, \
 372                                 ((struct rename_data *) data)->dst,
 373                                 talloc_asprintf(talloc_tos(), "%u", \
 374                                 ((struct rename_data *) data)->result));
 375                         break;
 376                 case vfs_id_chdir: ;
 377                         str = smb_traffic_analyzer_create_string( tm, \
 378                                 seconds, handle, username, 2,\
 379                                 ((struct chdir_data *) data)->path, \
 380                                 talloc_asprintf(talloc_tos(), "%u", \
 381                                 ((struct chdir_data *) data)->result));
 382                         break;
 383
 384                 case vfs_id_write:
 385                 case vfs_id_pwrite:
 386                 case vfs_id_read:
 387                 case vfs_id_pread: ;
 388                         str = smb_traffic_analyzer_create_string( tm, \
 389                                 seconds, handle, username, 2,\
 390                                 ((struct rw_data *) data)->filename, \
 391                                 talloc_asprintf(talloc_tos(), "%u", \
 392                                 ((struct rw_data *) data)->len));
 393                         break;
 394                 default:
 395                         DEBUG(1, ("smb_traffic_analyzer: error! "
 396                                 "wrong VFS operation id detected!\n"));
 397                         return;
 398                 }
 399
 400         } else {
 401                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 402                         "error, unkown protocol given!\n"));
 403                 return;
 404         }
 405
 406         if (!str) {
 407                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 408                         "unable to create string to send!\n"));
 409                 return;
 410         }
 411
 412         len = strlen(str);
 413
 414         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: going to send "
 415                 "%s\n", str));
 416         /* If configured, optain the key and run AES encryption */
 417         /* over the data.                                       */
 418         size_t size;
 419         char *akey = secrets_fetch("smb_traffic_analyzer_key", &size);
 420         if ( akey != NULL ) {
 421                 char *crypted;
 422                 DEBUG(10, ("smb_traffic_analyzer: a key was found, encrypting "
 423                         "data!"));
 424                 AES_KEY *key;
 425                 samba_AES_set_encrypt_key(akey, 128, key);
 426                 samba_AES_encrypt( str, crypted, key );
 427                 len = strlen( crypted );
 428                 if (write_data(rf_sock->sock, crypted, len) != len) {
 429                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 430                                 "error sending crypted data to socket!\n"));
 431                 free( crypted );
 432                 return ;
 433                 }
 434         }
 435         if (write_data(rf_sock->sock, str, len) != len) {
 436                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 437                         "error sending data to socket!\n"));
 438                 return ;
 439         }
 440 }
 441
 442 static struct refcounted_sock *sock_list;
 443
 444 static void smb_traffic_analyzer_free_data(void **pptr)
 445 {
 446         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 447         if (rf_sock == NULL) {
 448                 return;
 449         }
 450         rf_sock->ref_count--;
 451         if (rf_sock->ref_count != 0) {
 452                 return;
 453         }
 454         if (rf_sock->sock != -1) {
 455                 close(rf_sock->sock);
 456         }
 457         DLIST_REMOVE(sock_list, rf_sock);
 458         TALLOC_FREE(rf_sock);
 459 }
 460
 461 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 462                          const char *service,
 463                          const char *user)
 464 {
 465         connection_struct *conn = handle->conn;
 466         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 467         struct refcounted_sock *rf_sock = NULL;
 468         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 469                                 lp_parm_const_string(SNUM(conn),
 470                                         "smb_traffic_analyzer",
 471                                 "host", "localhost");
 472         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 473                                 atoi( lp_parm_const_string(SNUM(conn),
 474                                 "smb_traffic_analyzer", "port", "9430"));
 475         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 476
 477         if (ret < 0) {
 478                 return ret;
 479         }
 480
 481         /* Are we already connected ? */
 482         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 483                 if (port == rf_sock->port &&
 484                                 (strcmp(name, rf_sock->name) == 0)) {
 485                         break;
 486                 }
 487         }
 488
 489         /* If we're connected already, just increase the
 490          * reference count. */
 491         if (rf_sock) {
 492                 rf_sock->ref_count++;
 493         } else {
 494                 /* New connection. */
 495                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 496                 if (rf_sock == NULL) {
 497                         SMB_VFS_NEXT_DISCONNECT(handle);
 498                         errno = ENOMEM;
 499                         return -1;
 500                 }
 501                 rf_sock->name = talloc_strdup(rf_sock, name);
 502                 if (rf_sock->name == NULL) {
 503                         SMB_VFS_NEXT_DISCONNECT(handle);
 504                         TALLOC_FREE(rf_sock);
 505                         errno = ENOMEM;
 506                         return -1;
 507                 }
 508                 rf_sock->port = port;
 509                 rf_sock->ref_count = 1;
 510
 511                 if (st == UNIX_DOMAIN_SOCKET) {
 512                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 513                                                         name);
 514                 } else {
 515
 516                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 517                                                         name,
 518                                                         port);
 519                 }
 520                 if (rf_sock->sock == -1) {
 521                         SMB_VFS_NEXT_DISCONNECT(handle);
 522                         TALLOC_FREE(rf_sock);
 523                         return -1;
 524                 }
 525                 DLIST_ADD(sock_list, rf_sock);
 526         }
 527
 528         /* Store the private data. */
 529         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 530                                 struct refcounted_sock, return -1);
 531         return 0;
 532 }
 533
 534 /* VFS Functions */
 535 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 536                         const char *path)
 537 {
 538         struct chdir_data s_data;
 539         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 540         s_data.path = path;
 541         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 542         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 543         return s_data.result;
 544 }
 545
 546 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 547                 const struct smb_filename *smb_fname_src,
 548                 const struct smb_filename *smb_fname_dst)
 549 {
 550         struct rename_data s_data;
 551         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 552                 smb_fname_dst);
 553         s_data.src = smb_fname_src->base_name;
 554         s_data.dst = smb_fname_dst->base_name;
 555         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 556                 smb_fname_src->base_name,
 557                 smb_fname_dst->base_name));
 558         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 559         return s_data.result;
 560 }
 561
 562 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 563                         const char *path)
 564 {
 565         struct rmdir_data s_data;
 566         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 567         s_data.path = path;
 568         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 569         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 570         return s_data.result;
 571 }
 572
 573 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 574                         const char *path, mode_t mode)
 575 {
 576         struct mkdir_data s_data;
 577         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 578         s_data.path = path;
 579         s_data.mode = mode;
 580         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 581         smb_traffic_analyzer_send_data(handle,
 582                         &s_data,
 583                         vfs_id_mkdir);
 584         return s_data.result;
 585 }
 586
 587 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 588                                 files_struct *fsp, void *data, size_t n)
 589 {
 590         struct rw_data s_data;
 591
 592         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 593         s_data.filename = fsp->fsp_name->base_name;
 594         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 595
 596         smb_traffic_analyzer_send_data(handle,
 597                         &s_data,
 598                         vfs_id_read);
 599         return s_data.len;
 600 }
 601
 602
 603 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 604                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 605 {
 606         struct rw_data s_data;
 607
 608         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 609         s_data.filename = fsp->fsp_name->base_name;
 610         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 611                    fsp_str_dbg(fsp)));
 612
 613         smb_traffic_analyzer_send_data(handle,
 614                         &s_data,
 615                         vfs_id_pread);
 616
 617         return s_data.len;
 618 }
 619
 620 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 621                         files_struct *fsp, const void *data, size_t n)
 622 {
 623         struct rw_data s_data;
 624
 625         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 626         s_data.filename = fsp->fsp_name->base_name;
 627         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 628                    fsp_str_dbg(fsp)));
 629
 630         smb_traffic_analyzer_send_data(handle,
 631                         &s_data,
 632                         vfs_id_write);
 633         return s_data.len;
 634 }
 635
 636 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 637              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 638 {
 639         struct rw_data s_data;
 640
 641         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 642         s_data.filename = fsp->fsp_name->base_name;
 643         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 644                 fsp_str_dbg(fsp)));
 645
 646         smb_traffic_analyzer_send_data(handle,
 647                         &s_data,
 648                         vfs_id_pwrite);
 649         return s_data.len;
 650 }
 651
 652 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 653         .connect_fn = smb_traffic_analyzer_connect,
 654         .vfs_read = smb_traffic_analyzer_read,
 655         .pread = smb_traffic_analyzer_pread,
 656         .write = smb_traffic_analyzer_write,
 657         .pwrite = smb_traffic_analyzer_pwrite,
 658         .mkdir = smb_traffic_analyzer_mkdir,
 659         .rename = smb_traffic_analyzer_rename,
 660         .chdir = smb_traffic_analyzer_chdir
 661 };
 662
 663 /* Module initialization */
 664
 665 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 666 {
 667         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 668                                         "smb_traffic_analyzer",
 669                                         &vfs_smb_traffic_analyzer_fns);
 670
 671         if (!NT_STATUS_IS_OK(ret)) {
 672                 return ret;
 673         }
 674
 675         vfs_smb_traffic_analyzer_debug_level =
 676                 debug_add_class("smb_traffic_analyzer");
 677
 678         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 679                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 680                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 681                          "debugging class!\n"));
 682         } else {
 683                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 684                         "'smb_traffic_analyzer': %d\n", \
 685                         vfs_smb_traffic_analyzer_debug_level));
 686         }
 687
 688         return ret;
 689 }