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
  31 /**
  32  * Protocol version 2.0 description
  33  *
  34  * The following table shows the exact assembly of the 2.0 protocol.
  35  *
  36  * -->Header<--
  37  * The protocol header is always send first, and contains various
  38  * information about the data block to come.
  39  * The header is always of fixed length, and will be send unencrypted.
  40  *
  41  * Byte Number/Bytes    Description
  42  * 00-02                Contains always the string "V2."
  43  * 03                   This byte contains a possible subrelease number of the
  44  *                      protocol. This enables the receiver to make a version
  45  *                      check to ensure the compatibility and allows us to
  46  *                      release 2.x versions of the protocol with bugfixes or
  47  *                      enhancements.
  48  * 04                   This byte is reserved for possible future extensions.
  49  * 05                   Usually, this byte contains the character '0'. If the
  50  *                      VFS module is configured for encryption of the data,
  51  *                      this byte is set to 'E'.
  52  * 06-09                These bytes contain the character '0' by default, and
  53  *                      are reserved for possible future extensions. They have
  54  *                      no function in 2.0.
  55  * 10-27                17 bytes containing a string representation of the
  56  *                      number of bytes to come in the following data block.
  57  *                      It is right aligned and filled from the left with '0'.
  58  *
  59  * -->Data Block<--
  60  * The data block is send immediately after the header was send. It's length
  61  * is exactly what was given in bytes 11-28 from in the header.
  62  *
  63  * The data block may be send encrypted.
  64  *
  65  * To make the data block easy for the receiver to read, it is divided into
  66  * several sub-blocks, each with it's own header of four byte length. In each
  67  * of the sub-headers, a string representation of the length of this block is
  68  * to be found.
  69  *
  70  * Thus the formal structure is very simple:
  71  *
  72  * [HEADER]data[HEADER]data[HEADER]data[END]
  73  *
  74  * whereas [END] is exactly at the position given in bytes 11-28 of the
  75  * header.
  76  *
  77  * Some data the VFS module is capturing is of use for any VFS operation.
  78  * Therefore, there is a "common set" of data, that will be send with any
  79  * data block. The following provides a list of this data.
  80  * - the VFS function identifier (see VFS function ifentifier table below).
  81  * - a timestamp to the millisecond.
  82  * - the username (as text) who runs the VFS operation.
  83  * - the SID of the user who run the VFS operation.
  84  * - the domain under which the VFS operation has happened.
  85  *
  86  */
  87
  88
  89 /**
  90  * VFS Functions identifier table. In protocol version 2, every vfs
  91  * function is given a unique id.
  92  */
  93 enum vfs_id {
  94         /*
  95          * care for the order here, required for compatibility
  96          * with protocol version 1.
  97          */
  98         vfs_id_read,
  99         vfs_id_pread,
 100         vfs_id_write,
 101         vfs_id_pwrite,
 102         /* end of protocol version 1 identifiers. */
 103         vfs_id_mkdir,
 104         vfs_id_rmdir,
 105         vfs_id_rename,
 106         vfs_id_chdir
 107 };
 108
 109 /*
 110  * Specific data sets for the VFS functions.
 111  * A compatible receiver has to have the exact same dataset.
 112  */
 113 struct mkdir_data {
 114         const char *path;
 115         mode_t mode;
 116         int result;
 117 };
 118
 119 struct rmdir_data {
 120         const char *path;
 121         int result;
 122 };
 123
 124 struct rename_data {
 125         const char *src;
 126         const char *dst;
 127         int result;
 128 };
 129
 130 struct chdir_data {
 131         const char *path;
 132         int result;
 133 };
 134
 135 /* rw_data used for read/write/pread/pwrite */
 136 struct rw_data {
 137         char *filename;
 138         size_t len;
 139 };
 140
 141 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 142
 143 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
 144 {
 145         connection_struct *conn = handle->conn;
 146         const char *Mode;
 147         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
 148                         "internet_socket");
 149         if (strstr(Mode,"unix_domain_socket")) {
 150                 return UNIX_DOMAIN_SOCKET;
 151         } else {
 152                 return INTERNET_SOCKET;
 153         }
 154 }
 155
 156
 157 /* Connect to an internet socket */
 158 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
 159                                         const char *name, uint16_t port)
 160 {
 161         /* Create a streaming Socket */
 162         int sockfd = -1;
 163         struct addrinfo hints;
 164         struct addrinfo *ailist = NULL;
 165         struct addrinfo *res = NULL;
 166         int ret;
 167
 168         ZERO_STRUCT(hints);
 169         /* By default make sure it supports TCP. */
 170         hints.ai_socktype = SOCK_STREAM;
 171         hints.ai_flags = AI_ADDRCONFIG;
 172
 173         ret = getaddrinfo(name,
 174                         NULL,
 175                         &hints,
 176                         &ailist);
 177
 178         if (ret) {
 179                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
 180                         "getaddrinfo failed for name %s [%s]\n",
 181                         name,
 182                         gai_strerror(ret) ));
 183                 return -1;
 184         }
 185
 186         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
 187                 "Port: %i\n", name, port));
 188
 189         for (res = ailist; res; res = res->ai_next) {
 190                 struct sockaddr_storage ss;
 191                 NTSTATUS status;
 192
 193                 if (!res->ai_addr || res->ai_addrlen == 0) {
 194                         continue;
 195                 }
 196
 197                 ZERO_STRUCT(ss);
 198                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
 199
 200                 status = open_socket_out(&ss, port, 10000, &sockfd);
 201                 if (NT_STATUS_IS_OK(status)) {
 202                         break;
 203                 }
 204         }
 205
 206         if (ailist) {
 207                 freeaddrinfo(ailist);
 208         }
 209
 210         if (sockfd == -1) {
 211                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 212                         "socket, error is %s",
 213                         strerror(errno)));
 214                 return -1;
 215         }
 216
 217         return sockfd;
 218 }
 219
 220 /* Connect to a unix domain socket */
 221 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 222                                                 const char *name)
 223 {
 224         /* Create the socket to stad */
 225         int len, sock;
 226         struct sockaddr_un remote;
 227
 228         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 229                         "Unix domain socket mode. Using %s\n",
 230                         name ));
 231
 232         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 233                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 234                         "Couldn't create socket, "
 235                         "make sure stad is running!\n"));
 236                 return -1;
 237         }
 238         remote.sun_family = AF_UNIX;
 239         strlcpy(remote.sun_path, name,
 240                     sizeof(remote.sun_path));
 241         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 242         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 243                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 244                         "Could not connect to "
 245                         "socket, make sure\nstad is running!\n"));
 246                 close(sock);
 247                 return -1;
 248         }
 249         return sock;
 250 }
 251
 252 /* Private data allowing shared connection sockets. */
 253 struct refcounted_sock {
 254         struct refcounted_sock *next, *prev;
 255         char *name;
 256         uint16_t port;
 257         int sock;
 258         unsigned int ref_count;
 259 };
 260
 261
 262 /* The marshaller for the protocol version 2. */
 263 static char *smb_traffic_analyzer_create_string( struct tm *tm, \
 264         int seconds, vfs_handle_struct *handle, \
 265         char *username, int vfs_operation, int count, ... )
 266 {
 267
 268         va_list ap;
 269         char *arg = NULL;
 270         int len;
 271         char *header = NULL;
 272         char *buf = NULL;
 273         char *timestr = NULL;
 274         char *opstr = NULL;
 275         char *sidstr = NULL;
 276         char *userstr = NULL;
 277         char *usersid = NULL;
 278         const char *total_anonymization = NULL;
 279         const char *anon_prefix = NULL;
 280
 281         /* first create the data that is transfered with any VFS op */
 282         opstr = talloc_asprintf(talloc_tos(), "%i", vfs_operation);
 283         len = strlen(opstr);
 284         buf = talloc_asprintf(talloc_tos(), "%04u%s", len, opstr);
 285         len = strlen( username );
 286         buf = talloc_asprintf_append(buf, "%04u%s", len, username);
 287
 288         /*
 289          * Handle anonymization. In protocol v2, we have to anonymize
 290          * both the SID and the username.
 291          */
 292         total_anonymization=lp_parm_const_string(SNUM(handle->conn),
 293                                         "smb_traffic_analyzer",
 294                                         "total_anonymization", NULL);
 295
 296         anon_prefix=lp_parm_const_string(SNUM(handle->conn),
 297                                         "smb_traffic_analyzer",
 298                                         "anonymize_prefix", NULL );
 299         usersid = dom_sid_string(talloc_tos(),
 300                 &handle->conn->server_info->ptok->user_sids[0]);
 301         if (anon_prefix != NULL) {
 302                 if (total_anonymization != NULL) {
 303                         userstr = talloc_asprintf(talloc_tos(), "%s",
 304                                                         anon_prefix);
 305                         sidstr = talloc_asprintf(talloc_tos(), "%s",
 306                                                         anon_prefix);
 307                 } else {
 308                         userstr = talloc_asprintf(talloc_tos(), "%s%i",
 309                                 anon_prefix,
 310                                 str_checksum(username));
 311                         sidstr = talloc_asprintf(talloc_tos(), "%s%i",
 312                                 anon_prefix,
 313                                 str_checksum(usersid));
 314                 }
 315         } else {
 316                 userstr = username;
 317                 sidstr = usersid;
 318         }
 319
 320         len = strlen( userstr );
 321         buf = talloc_asprintf_append(buf, "%04u%s", len, userstr);
 322         len = strlen( sidstr );
 323         buf = talloc_asprintf_append(buf, "%04u%s", len, sidstr);
 324         len = strlen( handle->conn->connectpath );
 325         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 326                 handle->conn->connectpath );
 327         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 328         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 329                 pdb_get_domain(handle->conn->server_info->sam_account) );
 330         timestr = talloc_asprintf(talloc_tos(), \
 331                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 332                 tm->tm_year+1900, \
 333                 tm->tm_mon+1, \
 334                 tm->tm_mday, \
 335                 tm->tm_hour, \
 336                 tm->tm_min, \
 337                 tm->tm_sec, \
 338                 (int)seconds);
 339         len = strlen( timestr );
 340         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 341
 342         va_start( ap, count );
 343         while ( count-- ) {
 344                 arg = va_arg( ap, char * );
 345                 /*
 346                  *  protocol v2 sends a four byte string
 347                  * as a header to each block, including
 348                  * the numbers of bytes to come in the
 349                  * next string.
 350                  */
 351                 len = strlen( arg );
 352                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 353         }
 354         va_end( ap );
 355         return buf;
 356 }
 357
 358 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 359                                         void *data,
 360                                         enum vfs_id vfs_operation )
 361 {
 362         struct refcounted_sock *rf_sock = NULL;
 363         struct timeval tv;
 364         time_t tv_sec;
 365         struct tm *tm = NULL;
 366         int seconds;
 367         char *str = NULL;
 368         char *username = NULL;
 369         char *header = NULL;
 370         const char *anon_prefix = NULL;
 371         const char *total_anonymization = NULL;
 372         const char *protocol_version = NULL;
 373         bool Write = false;
 374         size_t len;
 375         char state_flags[9] = "000000\0";
 376
 377         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 378
 379         if (rf_sock == NULL || rf_sock->sock == -1) {
 380                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 381                         "closed\n"));
 382                 return;
 383         }
 384
 385         GetTimeOfDay(&tv);
 386         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 387         tm = localtime(&tv_sec);
 388         if (!tm) {
 389                 return;
 390         }
 391         seconds=(float) (tv.tv_usec / 1000);
 392
 393         /*
 394          * Check if anonymization is required, and if yes do this only if
 395          * we run on protocol version 1. Anonynization for protocol v2 is
 396          * handled in it's marshaller function.
 397          */
 398         total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
 399                                         "total_anonymization", NULL);
 400
 401         anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
 402                                         "anonymize_prefix", NULL );
 403
 404         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 405                                         "smb_traffic_analyzer",
 406                                         "protocol_version", NULL );
 407
 408         if (anon_prefix!=NULL && strcmp(protocol_version,"V2") != 0) {
 409                 if (total_anonymization!=NULL) {
 410                         username = talloc_asprintf(talloc_tos(),
 411                                 "%s",
 412                                 anon_prefix);
 413                 } else {
 414                         username = talloc_asprintf(talloc_tos(),
 415                                 "%s%i",
 416                                 anon_prefix,
 417                                 str_checksum(
 418                                         handle->conn->server_info->sanitized_username ) );
 419                 }
 420
 421         } else {
 422                 username = handle->conn->server_info->sanitized_username;
 423         }
 424
 425         if (!username) {
 426                 return;
 427         }
 428
 429         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 430
 431                 struct rw_data *s_data = (struct rw_data *) data;
 432
 433                 /*
 434                  * in case of protocol v1, ignore any vfs operations
 435                  * except read,pread,write,pwrite, and set the "Write"
 436                  * bool accordingly, send data and return.
 437                  */
 438                 if ( vfs_operation > vfs_id_pwrite ) return;
 439
 440                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 441                         else Write=true;
 442
 443                 str = talloc_asprintf(talloc_tos(),
 444                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 445                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 446                         (unsigned int) s_data->len,
 447                         username,
 448                         pdb_get_domain(handle->conn->server_info->sam_account),
 449                         Write ? 'W' : 'R',
 450                         handle->conn->connectpath,
 451                         s_data->filename,
 452                         tm->tm_year+1900,
 453                         tm->tm_mon+1,
 454                         tm->tm_mday,
 455                         tm->tm_hour,
 456                         tm->tm_min,
 457                         tm->tm_sec,
 458                         (int)seconds);
 459                 if (write_data(rf_sock->sock, str, len) != len) {
 460                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 461                         "error sending V1 protocol data to socket!\n"));
 462                 return;
 463                 }
 464
 465         } else if ( strcmp( protocol_version, "V2") == 0) {
 466
 467                 switch( vfs_operation ) {
 468                 case vfs_id_mkdir: ;
 469                         str = smb_traffic_analyzer_create_string( tm, \
 470                                 seconds, handle, username, vfs_id_mkdir, 3,\
 471                                 ((struct mkdir_data *) data)->path, \
 472                                 talloc_asprintf( talloc_tos(), "%u", \
 473                                 ((struct mkdir_data *) data)->mode), \
 474                                 talloc_asprintf( talloc_tos(), "%u", \
 475                                 ((struct mkdir_data *) data)->result ));
 476                         break;
 477                 case vfs_id_rmdir: ;
 478                         str = smb_traffic_analyzer_create_string( tm, \
 479                                 seconds, handle, username, vfs_id_rmdir, 2,\
 480                                 ((struct rmdir_data *) data)->path, \
 481                                 talloc_asprintf( talloc_tos(), "%u", \
 482                                 ((struct rmdir_data *) data)->result ));
 483                         break;
 484                 case vfs_id_rename: ;
 485                         str = smb_traffic_analyzer_create_string( tm, \
 486                                 seconds, handle, username, vfs_id_rename, 3,\
 487                                 ((struct rename_data *) data)->src, \
 488                                 ((struct rename_data *) data)->dst,
 489                                 talloc_asprintf(talloc_tos(), "%u", \
 490                                 ((struct rename_data *) data)->result));
 491                         break;
 492                 case vfs_id_chdir: ;
 493                         str = smb_traffic_analyzer_create_string( tm, \
 494                                 seconds, handle, username, vfs_id_chdir, 2,\
 495                                 ((struct chdir_data *) data)->path, \
 496                                 talloc_asprintf(talloc_tos(), "%u", \
 497                                 ((struct chdir_data *) data)->result));
 498                         break;
 499
 500                 case vfs_id_write:
 501                 case vfs_id_pwrite:
 502                 case vfs_id_read:
 503                 case vfs_id_pread: ;
 504                         str = smb_traffic_analyzer_create_string( tm, \
 505                                 seconds, handle, username, vfs_operation, 2,\
 506                                 ((struct rw_data *) data)->filename, \
 507                                 talloc_asprintf(talloc_tos(), "%u", \
 508                                 ((struct rw_data *) data)->len));
 509                         break;
 510                 default:
 511                         DEBUG(1, ("smb_traffic_analyzer: error! "
 512                                 "wrong VFS operation id detected!\n"));
 513                         return;
 514                 }
 515
 516         } else {
 517                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 518                         "error, unkown protocol given!\n"));
 519                 return;
 520         }
 521
 522         if (!str) {
 523                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 524                         "unable to create string to send!\n"));
 525                 return;
 526         }
 527
 528
 529         /*
 530          * If configured, optain the key and run AES encryption
 531          * over the data.
 532          */
 533         size_t size;
 534         char *akey = secrets_fetch("smb_traffic_analyzer_key", &size);
 535         if ( akey != NULL ) {
 536                 char *crypted;
 537                 state_flags[2] = 'E';
 538                 DEBUG(10, ("smb_traffic_analyzer: a key was found, encrypting "
 539                         "data!"));
 540                 AES_KEY *key;
 541                 samba_AES_set_encrypt_key(akey, 128, key);
 542                 samba_AES_encrypt( str, crypted, key );
 543                 len = strlen( crypted );
 544                 header = talloc_asprintf( talloc_tos(), "V2.%s%017u",
 545                                                 state_flags, len);
 546
 547                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 548                         " header created for crypted data: %s", header));
 549                 len = strlen(header);
 550                 if (write_data(rf_sock->sock, header, len) != len) {
 551                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 552                                                 "error sending the header"
 553                                                  " over the socket!\n"));
 554                 }
 555                 len = strlen(crypted);
 556                 if (write_data(rf_sock->sock, crypted, len) != len) {
 557                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 558                                 "error sending crypted data to socket!\n"));
 559                 free( crypted );
 560                 return ;
 561                 }
 562         }
 563
 564         len = strlen(str);
 565         header = talloc_asprintf(talloc_tos(), "V2.%s%017u", state_flags, len);
 566         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: header created:"
 567                                                         "%s\n", header));
 568         len = strlen(header);
 569         if (write_data(rf_sock->sock, header, len) != len) {
 570                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: error "
 571                         "sending the header over the socket!\n"));
 572         }
 573         len = strlen(str);
 574         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: going to send "
 575                         "data block: %s\n",str));
 576         if (write_data(rf_sock->sock, str, len) != len) {
 577                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 578                         "error sending data to socket!\n"));
 579                 return ;
 580         }
 581 }
 582
 583 static struct refcounted_sock *sock_list;
 584
 585 static void smb_traffic_analyzer_free_data(void **pptr)
 586 {
 587         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 588         if (rf_sock == NULL) {
 589                 return;
 590         }
 591         rf_sock->ref_count--;
 592         if (rf_sock->ref_count != 0) {
 593                 return;
 594         }
 595         if (rf_sock->sock != -1) {
 596                 close(rf_sock->sock);
 597         }
 598         DLIST_REMOVE(sock_list, rf_sock);
 599         TALLOC_FREE(rf_sock);
 600 }
 601
 602 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 603                          const char *service,
 604                          const char *user)
 605 {
 606         connection_struct *conn = handle->conn;
 607         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 608         struct refcounted_sock *rf_sock = NULL;
 609         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 610                                 lp_parm_const_string(SNUM(conn),
 611                                         "smb_traffic_analyzer",
 612                                 "host", "localhost");
 613         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 614                                 atoi( lp_parm_const_string(SNUM(conn),
 615                                 "smb_traffic_analyzer", "port", "9430"));
 616         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 617
 618         if (ret < 0) {
 619                 return ret;
 620         }
 621
 622         /* Are we already connected ? */
 623         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 624                 if (port == rf_sock->port &&
 625                                 (strcmp(name, rf_sock->name) == 0)) {
 626                         break;
 627                 }
 628         }
 629
 630         /* If we're connected already, just increase the
 631          * reference count. */
 632         if (rf_sock) {
 633                 rf_sock->ref_count++;
 634         } else {
 635                 /* New connection. */
 636                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 637                 if (rf_sock == NULL) {
 638                         SMB_VFS_NEXT_DISCONNECT(handle);
 639                         errno = ENOMEM;
 640                         return -1;
 641                 }
 642                 rf_sock->name = talloc_strdup(rf_sock, name);
 643                 if (rf_sock->name == NULL) {
 644                         SMB_VFS_NEXT_DISCONNECT(handle);
 645                         TALLOC_FREE(rf_sock);
 646                         errno = ENOMEM;
 647                         return -1;
 648                 }
 649                 rf_sock->port = port;
 650                 rf_sock->ref_count = 1;
 651
 652                 if (st == UNIX_DOMAIN_SOCKET) {
 653                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 654                                                         name);
 655                 } else {
 656
 657                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 658                                                         name,
 659                                                         port);
 660                 }
 661                 if (rf_sock->sock == -1) {
 662                         SMB_VFS_NEXT_DISCONNECT(handle);
 663                         TALLOC_FREE(rf_sock);
 664                         return -1;
 665                 }
 666                 DLIST_ADD(sock_list, rf_sock);
 667         }
 668
 669         /* Store the private data. */
 670         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 671                                 struct refcounted_sock, return -1);
 672         return 0;
 673 }
 674
 675 /* VFS Functions */
 676 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 677                         const char *path)
 678 {
 679         struct chdir_data s_data;
 680         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 681         s_data.path = path;
 682         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 683         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 684         return s_data.result;
 685 }
 686
 687 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 688                 const struct smb_filename *smb_fname_src,
 689                 const struct smb_filename *smb_fname_dst)
 690 {
 691         struct rename_data s_data;
 692         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 693                 smb_fname_dst);
 694         s_data.src = smb_fname_src->base_name;
 695         s_data.dst = smb_fname_dst->base_name;
 696         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 697                 smb_fname_src->base_name,
 698                 smb_fname_dst->base_name));
 699         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 700         return s_data.result;
 701 }
 702
 703 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 704                         const char *path)
 705 {
 706         struct rmdir_data s_data;
 707         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 708         s_data.path = path;
 709         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 710         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 711         return s_data.result;
 712 }
 713
 714 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 715                         const char *path, mode_t mode)
 716 {
 717         struct mkdir_data s_data;
 718         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 719         s_data.path = path;
 720         s_data.mode = mode;
 721         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 722         smb_traffic_analyzer_send_data(handle,
 723                         &s_data,
 724                         vfs_id_mkdir);
 725         return s_data.result;
 726 }
 727
 728 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 729                                 files_struct *fsp, void *data, size_t n)
 730 {
 731         struct rw_data s_data;
 732
 733         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 734         s_data.filename = fsp->fsp_name->base_name;
 735         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 736
 737         smb_traffic_analyzer_send_data(handle,
 738                         &s_data,
 739                         vfs_id_read);
 740         return s_data.len;
 741 }
 742
 743
 744 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 745                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 746 {
 747         struct rw_data s_data;
 748
 749         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 750         s_data.filename = fsp->fsp_name->base_name;
 751         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 752                    fsp_str_dbg(fsp)));
 753
 754         smb_traffic_analyzer_send_data(handle,
 755                         &s_data,
 756                         vfs_id_pread);
 757
 758         return s_data.len;
 759 }
 760
 761 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 762                         files_struct *fsp, const void *data, size_t n)
 763 {
 764         struct rw_data s_data;
 765
 766         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 767         s_data.filename = fsp->fsp_name->base_name;
 768         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 769                    fsp_str_dbg(fsp)));
 770
 771         smb_traffic_analyzer_send_data(handle,
 772                         &s_data,
 773                         vfs_id_write);
 774         return s_data.len;
 775 }
 776
 777 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 778              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 779 {
 780         struct rw_data s_data;
 781
 782         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 783         s_data.filename = fsp->fsp_name->base_name;
 784         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 785                 fsp_str_dbg(fsp)));
 786
 787         smb_traffic_analyzer_send_data(handle,
 788                         &s_data,
 789                         vfs_id_pwrite);
 790         return s_data.len;
 791 }
 792
 793 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 794         .connect_fn = smb_traffic_analyzer_connect,
 795         .vfs_read = smb_traffic_analyzer_read,
 796         .pread = smb_traffic_analyzer_pread,
 797         .write = smb_traffic_analyzer_write,
 798         .pwrite = smb_traffic_analyzer_pwrite,
 799         .mkdir = smb_traffic_analyzer_mkdir,
 800         .rename = smb_traffic_analyzer_rename,
 801         .chdir = smb_traffic_analyzer_chdir
 802 };
 803
 804 /* Module initialization */
 805 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 806 {
 807         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 808                                         "smb_traffic_analyzer",
 809                                         &vfs_smb_traffic_analyzer_fns);
 810
 811         if (!NT_STATUS_IS_OK(ret)) {
 812                 return ret;
 813         }
 814
 815         vfs_smb_traffic_analyzer_debug_level =
 816                 debug_add_class("smb_traffic_analyzer");
 817
 818         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 819                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 820                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 821                          "debugging class!\n"));
 822         } else {
 823                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 824                         "'smb_traffic_analyzer': %d\n", \
 825                         vfs_smb_traffic_analyzer_debug_level));
 826         }
 827
 828         return ret;
 829 }