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 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
  77
  78 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
  79 {
  80         connection_struct *conn = handle->conn;
  81         const char *Mode;
  82         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
  83                         "internet_socket");
  84         if (strstr(Mode,"unix_domain_socket")) {
  85                 return UNIX_DOMAIN_SOCKET;
  86         } else {
  87                 return INTERNET_SOCKET;
  88         }
  89 }
  90
  91
  92 /* Connect to an internet socket */
  93
  94 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
  95                                         const char *name, uint16_t port)
  96 {
  97         /* Create a streaming Socket */
  98         int sockfd = -1;
  99         struct addrinfo hints;
 100         struct addrinfo *ailist = NULL;
 101         struct addrinfo *res = NULL;
 102         int ret;
 103
 104         ZERO_STRUCT(hints);
 105         /* By default make sure it supports TCP. */
 106         hints.ai_socktype = SOCK_STREAM;
 107         hints.ai_flags = AI_ADDRCONFIG;
 108
 109         ret = getaddrinfo(name,
 110                         NULL,
 111                         &hints,
 112                         &ailist);
 113
 114         if (ret) {
 115                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
 116                         "getaddrinfo failed for name %s [%s]\n",
 117                         name,
 118                         gai_strerror(ret) ));
 119                 return -1;
 120         }
 121
 122         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
 123                 "Port: %i\n", name, port));
 124
 125         for (res = ailist; res; res = res->ai_next) {
 126                 struct sockaddr_storage ss;
 127                 NTSTATUS status;
 128
 129                 if (!res->ai_addr || res->ai_addrlen == 0) {
 130                         continue;
 131                 }
 132
 133                 ZERO_STRUCT(ss);
 134                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
 135
 136                 status = open_socket_out(&ss, port, 10000, &sockfd);
 137                 if (NT_STATUS_IS_OK(status)) {
 138                         break;
 139                 }
 140         }
 141
 142         if (ailist) {
 143                 freeaddrinfo(ailist);
 144         }
 145
 146         if (sockfd == -1) {
 147                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 148                         "socket, error is %s",
 149                         strerror(errno)));
 150                 return -1;
 151         }
 152
 153         return sockfd;
 154 }
 155
 156 /* Connect to a unix domain socket */
 157
 158 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 159                                                 const char *name)
 160 {
 161         /* Create the socket to stad */
 162         int len, sock;
 163         struct sockaddr_un remote;
 164
 165         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 166                         "Unix domain socket mode. Using %s\n",
 167                         name ));
 168
 169         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 170                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 171                         "Couldn't create socket, "
 172                         "make sure stad is running!\n"));
 173                 return -1;
 174         }
 175         remote.sun_family = AF_UNIX;
 176         strlcpy(remote.sun_path, name,
 177                     sizeof(remote.sun_path));
 178         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 179         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 180                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 181                         "Could not connect to "
 182                         "socket, make sure\nstad is running!\n"));
 183                 close(sock);
 184                 return -1;
 185         }
 186         return sock;
 187 }
 188
 189 /* Private data allowing shared connection sockets.     */
 190
 191 struct refcounted_sock {
 192         struct refcounted_sock *next, *prev;
 193         char *name;
 194         uint16_t port;
 195         int sock;
 196         unsigned int ref_count;
 197 };
 198
 199
 200 /* The marshaller for the protocol version 2.           */
 201 static char *smb_traffic_analyzer_create_string( struct tm *tm, \
 202         int seconds, vfs_handle_struct *handle, \
 203         char *username, int vfs_operation, int count, ... )
 204 {
 205
 206         va_list ap;
 207         char *arg = NULL;
 208         char *str = NULL;
 209         int len;
 210         char *header = NULL;
 211         char *buf = NULL;
 212         char *timestr = NULL;
 213         char *opstr = NULL;
 214         char *userSID = 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         userSID = dom_sid_string( talloc_tos(),
 223                 &handle->conn->server_info->ptok->user_sids[0]);
 224         len = strlen( userSID );
 225         buf = talloc_asprintf_append(buf, "%04u%s", len, userSID);
 226         len = strlen( handle->conn->connectpath );
 227         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 228                 handle->conn->connectpath );
 229         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 230         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 231                 pdb_get_domain(handle->conn->server_info->sam_account) );
 232         timestr = talloc_asprintf(talloc_tos(), \
 233                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 234                 tm->tm_year+1900, \
 235                 tm->tm_mon+1, \
 236                 tm->tm_mday, \
 237                 tm->tm_hour, \
 238                 tm->tm_min, \
 239                 tm->tm_sec, \
 240                 (int)seconds);
 241         len = strlen( timestr );
 242         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 243
 244         va_start( ap, count );
 245         while ( count-- ) {
 246                 arg = va_arg( ap, char * );
 247                 /* protocol v2 sends a four byte string */
 248                 /* as a header to each block, including */
 249                 /* the numbers of bytes to come in the  */
 250                 /* next string.                         */
 251                 len = strlen( arg );
 252                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 253         }
 254         va_end( ap );
 255
 256         /* now create the protocol v2 header.   */
 257         len = strlen( buf );
 258         str = talloc_asprintf_append( str, "V2,%017u%s", len, buf);
 259         DEBUG(10, ("smb_traffic_analyzer_create_string: %s\n",str));
 260         return str;
 261 }
 262
 263 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 264                                         void *data,
 265                                         enum vfs_id vfs_operation )
 266 {
 267         struct refcounted_sock *rf_sock = NULL;
 268         struct timeval tv;
 269         time_t tv_sec;
 270         struct tm *tm = NULL;
 271         int seconds;
 272         char *str = NULL;
 273         char *username = NULL;
 274         const char *anon_prefix = NULL;
 275         const char *total_anonymization = NULL;
 276         const char *protocol_version = NULL;
 277         bool Write = false;
 278         size_t len;
 279
 280         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 281
 282         if (rf_sock == NULL || rf_sock->sock == -1) {
 283                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 284                         "closed\n"));
 285                 return;
 286         }
 287
 288         GetTimeOfDay(&tv);
 289         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 290         tm = localtime(&tv_sec);
 291         if (!tm) {
 292                 return;
 293         }
 294         seconds=(float) (tv.tv_usec / 1000);
 295
 296         /* check if anonymization is required */
 297
 298         total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
 299                                         "total_anonymization", NULL);
 300
 301         anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
 302                                         "anonymize_prefix", NULL );
 303         if (anon_prefix!=NULL) {
 304                 if (total_anonymization!=NULL) {
 305                         username = talloc_asprintf(talloc_tos(),
 306                                 "%s",
 307                                 anon_prefix);
 308                 } else {
 309                         username = talloc_asprintf(talloc_tos(),
 310                                 "%s%i",
 311                                 anon_prefix,
 312                                 str_checksum(
 313                                         handle->conn->server_info->sanitized_username ) );
 314                 }
 315
 316         } else {
 317                 username = handle->conn->server_info->sanitized_username;
 318         }
 319
 320         if (!username) {
 321                 return;
 322         }
 323         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 324                 "smb_traffic_analyzer",
 325                 "protocol_version", NULL );
 326
 327         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 328
 329                 struct rw_data *s_data = (struct rw_data *) data;
 330
 331                 /* in case of protocol v1, ignore any vfs operations    */
 332                 /* except read,pread,write,pwrite, and set the "Write"  */
 333                 /* bool accordingly.                                    */
 334
 335                 if ( vfs_operation > vfs_id_pwrite ) return;
 336
 337                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 338                         else Write=true;
 339
 340                 str = talloc_asprintf(talloc_tos(),
 341                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 342                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 343                         (unsigned int) s_data->len,
 344                         username,
 345                         pdb_get_domain(handle->conn->server_info->sam_account),
 346                         Write ? 'W' : 'R',
 347                         handle->conn->connectpath,
 348                         s_data->filename,
 349                         tm->tm_year+1900,
 350                         tm->tm_mon+1,
 351                         tm->tm_mday,
 352                         tm->tm_hour,
 353                         tm->tm_min,
 354                         tm->tm_sec,
 355                         (int)seconds);
 356         } else if ( strcmp( protocol_version, "V2") == 0) {
 357
 358                 switch( vfs_operation ) {
 359                 case vfs_id_mkdir: ;
 360                         str = smb_traffic_analyzer_create_string( tm, \
 361                                 seconds, handle, username, vfs_id_mkdir, 3,\
 362                                 ((struct mkdir_data *) data)->path, \
 363                                 talloc_asprintf( talloc_tos(), "%u", \
 364                                 ((struct mkdir_data *) data)->mode), \
 365                                 talloc_asprintf( talloc_tos(), "%u", \
 366                                 ((struct mkdir_data *) data)->result ));
 367                         break;
 368                 case vfs_id_rmdir: ;
 369                         str = smb_traffic_analyzer_create_string( tm, \
 370                                 seconds, handle, username, vfs_id_rmdir, 2,\
 371                                 ((struct rmdir_data *) data)->path, \
 372                                 talloc_asprintf( talloc_tos(), "%u", \
 373                                 ((struct rmdir_data *) data)->result ));
 374                         break;
 375                 case vfs_id_rename: ;
 376                         str = smb_traffic_analyzer_create_string( tm, \
 377                                 seconds, handle, username, vfs_id_rename, 3,\
 378                                 ((struct rename_data *) data)->src, \
 379                                 ((struct rename_data *) data)->dst,
 380                                 talloc_asprintf(talloc_tos(), "%u", \
 381                                 ((struct rename_data *) data)->result));
 382                         break;
 383                 case vfs_id_chdir: ;
 384                         str = smb_traffic_analyzer_create_string( tm, \
 385                                 seconds, handle, username, vfs_id_chdir, 2,\
 386                                 ((struct chdir_data *) data)->path, \
 387                                 talloc_asprintf(talloc_tos(), "%u", \
 388                                 ((struct chdir_data *) data)->result));
 389                         break;
 390
 391                 case vfs_id_write:
 392                 case vfs_id_pwrite:
 393                 case vfs_id_read:
 394                 case vfs_id_pread: ;
 395                         str = smb_traffic_analyzer_create_string( tm, \
 396                                 seconds, handle, username, vfs_operation, 2,\
 397                                 ((struct rw_data *) data)->filename, \
 398                                 talloc_asprintf(talloc_tos(), "%u", \
 399                                 ((struct rw_data *) data)->len));
 400                         break;
 401                 default:
 402                         DEBUG(1, ("smb_traffic_analyzer: error! "
 403                                 "wrong VFS operation id detected!\n"));
 404                         return;
 405                 }
 406
 407         } else {
 408                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 409                         "error, unkown protocol given!\n"));
 410                 return;
 411         }
 412
 413         if (!str) {
 414                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 415                         "unable to create string to send!\n"));
 416                 return;
 417         }
 418
 419         len = strlen(str);
 420
 421         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: going to send "
 422                 "%s\n", str));
 423         /* If configured, optain the key and run AES encryption */
 424         /* over the data.                                       */
 425         size_t size;
 426         char *akey = secrets_fetch("smb_traffic_analyzer_key", &size);
 427         if ( akey != NULL ) {
 428                 char *crypted;
 429                 DEBUG(10, ("smb_traffic_analyzer: a key was found, encrypting "
 430                         "data!"));
 431                 AES_KEY *key;
 432                 samba_AES_set_encrypt_key(akey, 128, key);
 433                 samba_AES_encrypt( str, crypted, key );
 434                 len = strlen( crypted );
 435                 if (write_data(rf_sock->sock, crypted, len) != len) {
 436                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 437                                 "error sending crypted data to socket!\n"));
 438                 free( crypted );
 439                 return ;
 440                 }
 441         }
 442         if (write_data(rf_sock->sock, str, len) != len) {
 443                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 444                         "error sending data to socket!\n"));
 445                 return ;
 446         }
 447 }
 448
 449 static struct refcounted_sock *sock_list;
 450
 451 static void smb_traffic_analyzer_free_data(void **pptr)
 452 {
 453         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 454         if (rf_sock == NULL) {
 455                 return;
 456         }
 457         rf_sock->ref_count--;
 458         if (rf_sock->ref_count != 0) {
 459                 return;
 460         }
 461         if (rf_sock->sock != -1) {
 462                 close(rf_sock->sock);
 463         }
 464         DLIST_REMOVE(sock_list, rf_sock);
 465         TALLOC_FREE(rf_sock);
 466 }
 467
 468 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 469                          const char *service,
 470                          const char *user)
 471 {
 472         connection_struct *conn = handle->conn;
 473         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 474         struct refcounted_sock *rf_sock = NULL;
 475         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 476                                 lp_parm_const_string(SNUM(conn),
 477                                         "smb_traffic_analyzer",
 478                                 "host", "localhost");
 479         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 480                                 atoi( lp_parm_const_string(SNUM(conn),
 481                                 "smb_traffic_analyzer", "port", "9430"));
 482         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 483
 484         if (ret < 0) {
 485                 return ret;
 486         }
 487
 488         /* Are we already connected ? */
 489         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 490                 if (port == rf_sock->port &&
 491                                 (strcmp(name, rf_sock->name) == 0)) {
 492                         break;
 493                 }
 494         }
 495
 496         /* If we're connected already, just increase the
 497          * reference count. */
 498         if (rf_sock) {
 499                 rf_sock->ref_count++;
 500         } else {
 501                 /* New connection. */
 502                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 503                 if (rf_sock == NULL) {
 504                         SMB_VFS_NEXT_DISCONNECT(handle);
 505                         errno = ENOMEM;
 506                         return -1;
 507                 }
 508                 rf_sock->name = talloc_strdup(rf_sock, name);
 509                 if (rf_sock->name == NULL) {
 510                         SMB_VFS_NEXT_DISCONNECT(handle);
 511                         TALLOC_FREE(rf_sock);
 512                         errno = ENOMEM;
 513                         return -1;
 514                 }
 515                 rf_sock->port = port;
 516                 rf_sock->ref_count = 1;
 517
 518                 if (st == UNIX_DOMAIN_SOCKET) {
 519                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 520                                                         name);
 521                 } else {
 522
 523                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 524                                                         name,
 525                                                         port);
 526                 }
 527                 if (rf_sock->sock == -1) {
 528                         SMB_VFS_NEXT_DISCONNECT(handle);
 529                         TALLOC_FREE(rf_sock);
 530                         return -1;
 531                 }
 532                 DLIST_ADD(sock_list, rf_sock);
 533         }
 534
 535         /* Store the private data. */
 536         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 537                                 struct refcounted_sock, return -1);
 538         return 0;
 539 }
 540
 541 /* VFS Functions */
 542 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 543                         const char *path)
 544 {
 545         struct chdir_data s_data;
 546         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 547         s_data.path = path;
 548         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 549         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 550         return s_data.result;
 551 }
 552
 553 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 554                 const struct smb_filename *smb_fname_src,
 555                 const struct smb_filename *smb_fname_dst)
 556 {
 557         struct rename_data s_data;
 558         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 559                 smb_fname_dst);
 560         s_data.src = smb_fname_src->base_name;
 561         s_data.dst = smb_fname_dst->base_name;
 562         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 563                 smb_fname_src->base_name,
 564                 smb_fname_dst->base_name));
 565         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 566         return s_data.result;
 567 }
 568
 569 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 570                         const char *path)
 571 {
 572         struct rmdir_data s_data;
 573         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 574         s_data.path = path;
 575         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 576         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 577         return s_data.result;
 578 }
 579
 580 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 581                         const char *path, mode_t mode)
 582 {
 583         struct mkdir_data s_data;
 584         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 585         s_data.path = path;
 586         s_data.mode = mode;
 587         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 588         smb_traffic_analyzer_send_data(handle,
 589                         &s_data,
 590                         vfs_id_mkdir);
 591         return s_data.result;
 592 }
 593
 594 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 595                                 files_struct *fsp, void *data, size_t n)
 596 {
 597         struct rw_data s_data;
 598
 599         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 600         s_data.filename = fsp->fsp_name->base_name;
 601         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 602
 603         smb_traffic_analyzer_send_data(handle,
 604                         &s_data,
 605                         vfs_id_read);
 606         return s_data.len;
 607 }
 608
 609
 610 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 611                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 612 {
 613         struct rw_data s_data;
 614
 615         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 616         s_data.filename = fsp->fsp_name->base_name;
 617         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 618                    fsp_str_dbg(fsp)));
 619
 620         smb_traffic_analyzer_send_data(handle,
 621                         &s_data,
 622                         vfs_id_pread);
 623
 624         return s_data.len;
 625 }
 626
 627 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 628                         files_struct *fsp, const void *data, size_t n)
 629 {
 630         struct rw_data s_data;
 631
 632         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 633         s_data.filename = fsp->fsp_name->base_name;
 634         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 635                    fsp_str_dbg(fsp)));
 636
 637         smb_traffic_analyzer_send_data(handle,
 638                         &s_data,
 639                         vfs_id_write);
 640         return s_data.len;
 641 }
 642
 643 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 644              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 645 {
 646         struct rw_data s_data;
 647
 648         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 649         s_data.filename = fsp->fsp_name->base_name;
 650         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 651                 fsp_str_dbg(fsp)));
 652
 653         smb_traffic_analyzer_send_data(handle,
 654                         &s_data,
 655                         vfs_id_pwrite);
 656         return s_data.len;
 657 }
 658
 659 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 660         .connect_fn = smb_traffic_analyzer_connect,
 661         .vfs_read = smb_traffic_analyzer_read,
 662         .pread = smb_traffic_analyzer_pread,
 663         .write = smb_traffic_analyzer_write,
 664         .pwrite = smb_traffic_analyzer_pwrite,
 665         .mkdir = smb_traffic_analyzer_mkdir,
 666         .rename = smb_traffic_analyzer_rename,
 667         .chdir = smb_traffic_analyzer_chdir
 668 };
 669
 670 /* Module initialization */
 671
 672 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 673 {
 674         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 675                                         "smb_traffic_analyzer",
 676                                         &vfs_smb_traffic_analyzer_fns);
 677
 678         if (!NT_STATUS_IS_OK(ret)) {
 679                 return ret;
 680         }
 681
 682         vfs_smb_traffic_analyzer_debug_level =
 683                 debug_add_class("smb_traffic_analyzer");
 684
 685         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 686                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 687                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 688                          "debugging class!\n"));
 689         } else {
 690                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 691                         "'smb_traffic_analyzer': %d\n", \
 692                         vfs_smb_traffic_analyzer_debug_level));
 693         }
 694
 695         return ret;
 696 }