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 vfs_operation, 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         char *opstr = NULL;
 215
 216         /* first create the data that is transfered with any VFS op     */
 217         opstr = talloc_asprintf(talloc_tos(), "%i", vfs_operation);
 218         len = strlen(opstr);
 219         buf = talloc_asprintf(talloc_tos(), "%04u%s", len, opstr);
 220         len = strlen( username );
 221         buf = talloc_asprintf_append(buf, "%04u%s", len, username);
 222         len = strlen( handle->conn->connectpath );
 223         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 224                 handle->conn->connectpath );
 225         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 226         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 227                 pdb_get_domain(handle->conn->server_info->sam_account) );
 228         timestr = talloc_asprintf(talloc_tos(), \
 229                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 230                 tm->tm_year+1900, \
 231                 tm->tm_mon+1, \
 232                 tm->tm_mday, \
 233                 tm->tm_hour, \
 234                 tm->tm_min, \
 235                 tm->tm_sec, \
 236                 (int)seconds);
 237         len = strlen( timestr );
 238         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 239
 240         va_start( ap, count );
 241         while ( count-- ) {
 242                 arg = va_arg( ap, char * );
 243                 /* protocol v2 sends a four byte string */
 244                 /* as a header to each block, including */
 245                 /* the numbers of bytes to come in the  */
 246                 /* next string.                         */
 247                 len = strlen( arg );
 248                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 249         }
 250         va_end( ap );
 251
 252         /* now create the protocol v2 header.   */
 253         len = strlen( buf );
 254         str = talloc_asprintf_append( str, "V2,%017u%s", len, buf);
 255         DEBUG(10, ("smb_traffic_analyzer_create_string: %s\n",str));
 256         return str;
 257 }
 258
 259 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 260                                         void *data,
 261                                         enum vfs_id vfs_operation )
 262 {
 263         struct refcounted_sock *rf_sock = NULL;
 264         struct timeval tv;
 265         time_t tv_sec;
 266         struct tm *tm = NULL;
 267         int seconds;
 268         char *str = NULL;
 269         char *username = NULL;
 270         const char *anon_prefix = NULL;
 271         const char *total_anonymization = NULL;
 272         const char *protocol_version = NULL;
 273         bool Write = false;
 274         size_t len;
 275
 276         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 277
 278         if (rf_sock == NULL || rf_sock->sock == -1) {
 279                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 280                         "closed\n"));
 281                 return;
 282         }
 283
 284         GetTimeOfDay(&tv);
 285         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 286         tm = localtime(&tv_sec);
 287         if (!tm) {
 288                 return;
 289         }
 290         seconds=(float) (tv.tv_usec / 1000);
 291
 292         /* check if anonymization is required */
 293
 294         total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
 295                                         "total_anonymization", NULL);
 296
 297         anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
 298                                         "anonymize_prefix", NULL );
 299         if (anon_prefix!=NULL) {
 300                 if (total_anonymization!=NULL) {
 301                         username = talloc_asprintf(talloc_tos(),
 302                                 "%s",
 303                                 anon_prefix);
 304                 } else {
 305                         username = talloc_asprintf(talloc_tos(),
 306                                 "%s%i",
 307                                 anon_prefix,
 308                                 str_checksum(
 309                                         handle->conn->server_info->sanitized_username ) );
 310                 }
 311
 312         } else {
 313                 username = handle->conn->server_info->sanitized_username;
 314         }
 315
 316         if (!username) {
 317                 return;
 318         }
 319
 320         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 321                 "smb_traffic_analyzer",
 322                 "protocol_version", NULL );
 323
 324         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 325
 326                 struct rw_data *s_data = (struct rw_data *) data;
 327
 328                 /* in case of protocol v1, ignore any vfs operations    */
 329                 /* except read,pread,write,pwrite, and set the "Write"  */
 330                 /* bool accordingly.                                    */
 331
 332                 if ( vfs_operation > vfs_id_pwrite ) return;
 333
 334                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 335                         else Write=true;
 336
 337                 str = talloc_asprintf(talloc_tos(),
 338                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 339                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 340                         (unsigned int) s_data->len,
 341                         username,
 342                         pdb_get_domain(handle->conn->server_info->sam_account),
 343                         Write ? 'W' : 'R',
 344                         handle->conn->connectpath,
 345                         s_data->filename,
 346                         tm->tm_year+1900,
 347                         tm->tm_mon+1,
 348                         tm->tm_mday,
 349                         tm->tm_hour,
 350                         tm->tm_min,
 351                         tm->tm_sec,
 352                         (int)seconds);
 353         } else if ( strcmp( protocol_version, "V2") == 0) {
 354
 355                 switch( vfs_operation ) {
 356                 case vfs_id_mkdir: ;
 357                         str = smb_traffic_analyzer_create_string( tm, \
 358                                 seconds, handle, username, vfs_id_mkdir, 3,\
 359                                 ((struct mkdir_data *) data)->path, \
 360                                 talloc_asprintf( talloc_tos(), "%u", \
 361                                 ((struct mkdir_data *) data)->mode), \
 362                                 talloc_asprintf( talloc_tos(), "%u", \
 363                                 ((struct mkdir_data *) data)->result ));
 364                         break;
 365                 case vfs_id_rmdir: ;
 366                         str = smb_traffic_analyzer_create_string( tm, \
 367                                 seconds, handle, username, vfs_id_rmdir, 2,\
 368                                 ((struct rmdir_data *) data)->path, \
 369                                 talloc_asprintf( talloc_tos(), "%u", \
 370                                 ((struct rmdir_data *) data)->result ));
 371                         break;
 372                 case vfs_id_rename: ;
 373                         str = smb_traffic_analyzer_create_string( tm, \
 374                                 seconds, handle, username, vfs_id_rename, 3,\
 375                                 ((struct rename_data *) data)->src, \
 376                                 ((struct rename_data *) data)->dst,
 377                                 talloc_asprintf(talloc_tos(), "%u", \
 378                                 ((struct rename_data *) data)->result));
 379                         break;
 380                 case vfs_id_chdir: ;
 381                         str = smb_traffic_analyzer_create_string( tm, \
 382                                 seconds, handle, username, vfs_id_chdir, 2,\
 383                                 ((struct chdir_data *) data)->path, \
 384                                 talloc_asprintf(talloc_tos(), "%u", \
 385                                 ((struct chdir_data *) data)->result));
 386                         break;
 387
 388                 case vfs_id_write:
 389                 case vfs_id_pwrite:
 390                 case vfs_id_read:
 391                 case vfs_id_pread: ;
 392                         str = smb_traffic_analyzer_create_string( tm, \
 393                                 seconds, handle, username, vfs_operation, 2,\
 394                                 ((struct rw_data *) data)->filename, \
 395                                 talloc_asprintf(talloc_tos(), "%u", \
 396                                 ((struct rw_data *) data)->len));
 397                         break;
 398                 default:
 399                         DEBUG(1, ("smb_traffic_analyzer: error! "
 400                                 "wrong VFS operation id detected!\n"));
 401                         return;
 402                 }
 403
 404         } else {
 405                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 406                         "error, unkown protocol given!\n"));
 407                 return;
 408         }
 409
 410         if (!str) {
 411                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 412                         "unable to create string to send!\n"));
 413                 return;
 414         }
 415
 416         len = strlen(str);
 417
 418         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: going to send "
 419                 "%s\n", str));
 420         /* If configured, optain the key and run AES encryption */
 421         /* over the data.                                       */
 422         size_t size;
 423         char *akey = secrets_fetch("smb_traffic_analyzer_key", &size);
 424         if ( akey != NULL ) {
 425                 char *crypted;
 426                 DEBUG(10, ("smb_traffic_analyzer: a key was found, encrypting "
 427                         "data!"));
 428                 AES_KEY *key;
 429                 samba_AES_set_encrypt_key(akey, 128, key);
 430                 samba_AES_encrypt( str, crypted, key );
 431                 len = strlen( crypted );
 432                 if (write_data(rf_sock->sock, crypted, len) != len) {
 433                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 434                                 "error sending crypted data to socket!\n"));
 435                 free( crypted );
 436                 return ;
 437                 }
 438         }
 439         if (write_data(rf_sock->sock, str, len) != len) {
 440                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 441                         "error sending data to socket!\n"));
 442                 return ;
 443         }
 444 }
 445
 446 static struct refcounted_sock *sock_list;
 447
 448 static void smb_traffic_analyzer_free_data(void **pptr)
 449 {
 450         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 451         if (rf_sock == NULL) {
 452                 return;
 453         }
 454         rf_sock->ref_count--;
 455         if (rf_sock->ref_count != 0) {
 456                 return;
 457         }
 458         if (rf_sock->sock != -1) {
 459                 close(rf_sock->sock);
 460         }
 461         DLIST_REMOVE(sock_list, rf_sock);
 462         TALLOC_FREE(rf_sock);
 463 }
 464
 465 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 466                          const char *service,
 467                          const char *user)
 468 {
 469         connection_struct *conn = handle->conn;
 470         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 471         struct refcounted_sock *rf_sock = NULL;
 472         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 473                                 lp_parm_const_string(SNUM(conn),
 474                                         "smb_traffic_analyzer",
 475                                 "host", "localhost");
 476         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 477                                 atoi( lp_parm_const_string(SNUM(conn),
 478                                 "smb_traffic_analyzer", "port", "9430"));
 479         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 480
 481         if (ret < 0) {
 482                 return ret;
 483         }
 484
 485         /* Are we already connected ? */
 486         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 487                 if (port == rf_sock->port &&
 488                                 (strcmp(name, rf_sock->name) == 0)) {
 489                         break;
 490                 }
 491         }
 492
 493         /* If we're connected already, just increase the
 494          * reference count. */
 495         if (rf_sock) {
 496                 rf_sock->ref_count++;
 497         } else {
 498                 /* New connection. */
 499                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 500                 if (rf_sock == NULL) {
 501                         SMB_VFS_NEXT_DISCONNECT(handle);
 502                         errno = ENOMEM;
 503                         return -1;
 504                 }
 505                 rf_sock->name = talloc_strdup(rf_sock, name);
 506                 if (rf_sock->name == NULL) {
 507                         SMB_VFS_NEXT_DISCONNECT(handle);
 508                         TALLOC_FREE(rf_sock);
 509                         errno = ENOMEM;
 510                         return -1;
 511                 }
 512                 rf_sock->port = port;
 513                 rf_sock->ref_count = 1;
 514
 515                 if (st == UNIX_DOMAIN_SOCKET) {
 516                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 517                                                         name);
 518                 } else {
 519
 520                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 521                                                         name,
 522                                                         port);
 523                 }
 524                 if (rf_sock->sock == -1) {
 525                         SMB_VFS_NEXT_DISCONNECT(handle);
 526                         TALLOC_FREE(rf_sock);
 527                         return -1;
 528                 }
 529                 DLIST_ADD(sock_list, rf_sock);
 530         }
 531
 532         /* Store the private data. */
 533         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 534                                 struct refcounted_sock, return -1);
 535         return 0;
 536 }
 537
 538 /* VFS Functions */
 539 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 540                         const char *path)
 541 {
 542         struct chdir_data s_data;
 543         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 544         s_data.path = path;
 545         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 546         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 547         return s_data.result;
 548 }
 549
 550 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 551                 const struct smb_filename *smb_fname_src,
 552                 const struct smb_filename *smb_fname_dst)
 553 {
 554         struct rename_data s_data;
 555         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 556                 smb_fname_dst);
 557         s_data.src = smb_fname_src->base_name;
 558         s_data.dst = smb_fname_dst->base_name;
 559         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 560                 smb_fname_src->base_name,
 561                 smb_fname_dst->base_name));
 562         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 563         return s_data.result;
 564 }
 565
 566 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 567                         const char *path)
 568 {
 569         struct rmdir_data s_data;
 570         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 571         s_data.path = path;
 572         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 573         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 574         return s_data.result;
 575 }
 576
 577 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 578                         const char *path, mode_t mode)
 579 {
 580         struct mkdir_data s_data;
 581         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 582         s_data.path = path;
 583         s_data.mode = mode;
 584         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 585         smb_traffic_analyzer_send_data(handle,
 586                         &s_data,
 587                         vfs_id_mkdir);
 588         return s_data.result;
 589 }
 590
 591 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 592                                 files_struct *fsp, void *data, size_t n)
 593 {
 594         struct rw_data s_data;
 595
 596         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 597         s_data.filename = fsp->fsp_name->base_name;
 598         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 599
 600         smb_traffic_analyzer_send_data(handle,
 601                         &s_data,
 602                         vfs_id_read);
 603         return s_data.len;
 604 }
 605
 606
 607 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 608                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 609 {
 610         struct rw_data s_data;
 611
 612         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 613         s_data.filename = fsp->fsp_name->base_name;
 614         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 615                    fsp_str_dbg(fsp)));
 616
 617         smb_traffic_analyzer_send_data(handle,
 618                         &s_data,
 619                         vfs_id_pread);
 620
 621         return s_data.len;
 622 }
 623
 624 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 625                         files_struct *fsp, const void *data, size_t n)
 626 {
 627         struct rw_data s_data;
 628
 629         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 630         s_data.filename = fsp->fsp_name->base_name;
 631         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 632                    fsp_str_dbg(fsp)));
 633
 634         smb_traffic_analyzer_send_data(handle,
 635                         &s_data,
 636                         vfs_id_write);
 637         return s_data.len;
 638 }
 639
 640 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 641              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 642 {
 643         struct rw_data s_data;
 644
 645         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 646         s_data.filename = fsp->fsp_name->base_name;
 647         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 648                 fsp_str_dbg(fsp)));
 649
 650         smb_traffic_analyzer_send_data(handle,
 651                         &s_data,
 652                         vfs_id_pwrite);
 653         return s_data.len;
 654 }
 655
 656 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 657         .connect_fn = smb_traffic_analyzer_connect,
 658         .vfs_read = smb_traffic_analyzer_read,
 659         .pread = smb_traffic_analyzer_pread,
 660         .write = smb_traffic_analyzer_write,
 661         .pwrite = smb_traffic_analyzer_pwrite,
 662         .mkdir = smb_traffic_analyzer_mkdir,
 663         .rename = smb_traffic_analyzer_rename,
 664         .chdir = smb_traffic_analyzer_chdir
 665 };
 666
 667 /* Module initialization */
 668
 669 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 670 {
 671         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 672                                         "smb_traffic_analyzer",
 673                                         &vfs_smb_traffic_analyzer_fns);
 674
 675         if (!NT_STATUS_IS_OK(ret)) {
 676                 return ret;
 677         }
 678
 679         vfs_smb_traffic_analyzer_debug_level =
 680                 debug_add_class("smb_traffic_analyzer");
 681
 682         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 683                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 684                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 685                          "debugging class!\n"));
 686         } else {
 687                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 688                         "'smb_traffic_analyzer': %d\n", \
 689                         vfs_smb_traffic_analyzer_debug_level));
 690         }
 691
 692         return ret;
 693 }