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 #include "vfs_smb_traffic_analyzer.h"
  25
  26 /* abstraction for the send_over_network function */
  27 enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
  28
  29 #define LOCAL_PATHNAME "/var/tmp/stadsocket"
  30
  31 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
  32
  33 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
  34 {
  35         connection_struct *conn = handle->conn;
  36         const char *Mode;
  37         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
  38                         "internet_socket");
  39         if (strstr(Mode,"unix_domain_socket")) {
  40                 return UNIX_DOMAIN_SOCKET;
  41         } else {
  42                 return INTERNET_SOCKET;
  43         }
  44 }
  45
  46
  47 /* Connect to an internet socket */
  48 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
  49                                         const char *name, uint16_t port)
  50 {
  51         /* Create a streaming Socket */
  52         int sockfd = -1;
  53         struct addrinfo hints;
  54         struct addrinfo *ailist = NULL;
  55         struct addrinfo *res = NULL;
  56         int ret;
  57
  58         ZERO_STRUCT(hints);
  59         /* By default make sure it supports TCP. */
  60         hints.ai_socktype = SOCK_STREAM;
  61         hints.ai_flags = AI_ADDRCONFIG;
  62
  63         ret = getaddrinfo(name,
  64                         NULL,
  65                         &hints,
  66                         &ailist);
  67
  68         if (ret) {
  69                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
  70                         "getaddrinfo failed for name %s [%s]\n",
  71                         name,
  72                         gai_strerror(ret) ));
  73                 return -1;
  74         }
  75
  76         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
  77                 "Port: %i\n", name, port));
  78
  79         for (res = ailist; res; res = res->ai_next) {
  80                 struct sockaddr_storage ss;
  81                 NTSTATUS status;
  82
  83                 if (!res->ai_addr || res->ai_addrlen == 0) {
  84                         continue;
  85                 }
  86
  87                 ZERO_STRUCT(ss);
  88                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
  89
  90                 status = open_socket_out(&ss, port, 10000, &sockfd);
  91                 if (NT_STATUS_IS_OK(status)) {
  92                         break;
  93                 }
  94         }
  95
  96         if (ailist) {
  97                 freeaddrinfo(ailist);
  98         }
  99
 100         if (sockfd == -1) {
 101                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 102                         "socket, error is %s",
 103                         strerror(errno)));
 104                 return -1;
 105         }
 106
 107         return sockfd;
 108 }
 109
 110 /* Connect to a unix domain socket */
 111 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 112                                                 const char *name)
 113 {
 114         /* Create the socket to stad */
 115         int len, sock;
 116         struct sockaddr_un remote;
 117
 118         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 119                         "Unix domain socket mode. Using %s\n",
 120                         name ));
 121
 122         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 123                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 124                         "Couldn't create socket, "
 125                         "make sure stad is running!\n"));
 126                 return -1;
 127         }
 128         remote.sun_family = AF_UNIX;
 129         strlcpy(remote.sun_path, name,
 130                     sizeof(remote.sun_path));
 131         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 132         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 133                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 134                         "Could not connect to "
 135                         "socket, make sure\nstad is running!\n"));
 136                 close(sock);
 137                 return -1;
 138         }
 139         return sock;
 140 }
 141
 142 /* Private data allowing shared connection sockets. */
 143 struct refcounted_sock {
 144         struct refcounted_sock *next, *prev;
 145         char *name;
 146         uint16_t port;
 147         int sock;
 148         unsigned int ref_count;
 149 };
 150
 151
 152 /**
 153  * Encryption of a data block with AES
 154  * TALLOC_CTX *ctx      Talloc context to work on
 155  * const char *akey     128bit key for the encryption
 156  * const char *str      Data buffer to encrypt, \0 terminated
 157  * int *len             Will be set to the length of the
 158  *                      resulting data block
 159  * The caller has to take care for the memory
 160  * allocated on the context.
 161  */
 162 static char *smb_traffic_analyzer_encrypt( TALLOC_CTX *ctx,
 163         const char *akey, const char *str, size_t *len)
 164 {
 165         int s1,s2,h,d;
 166         AES_KEY key;
 167         char filler[17]= "................";
 168         char *output;
 169         char crypted[18];
 170         if (akey == NULL) return NULL;
 171         samba_AES_set_encrypt_key(akey, 128, &key);
 172         s1 = strlen(str) / 16;
 173         s2 = strlen(str) % 16;
 174         for (h = 0; h < s2; h++) *(filler+h)=*(str+(s1*16)+h);
 175         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created %s"
 176                 " as filling block.\n", filler));
 177         output = talloc_array(ctx, char, (s1*16)+17 );
 178         d=0;
 179         for (h = 0; h < s1; h++) {
 180                 samba_AES_encrypt(str+(16*h), crypted, &key);
 181                 for (d = 0; d<16; d++) output[d+(16*h)]=crypted[d];
 182         }
 183         samba_AES_encrypt( str+(16*h), filler, &key );
 184         for (d = 0;d < 16; d++) output[d+(16*h)]=*(filler+d);
 185         *len = (s1*16)+16;
 186         return output;
 187 }
 188
 189 /**
 190  * Create a v2 header.
 191  * TALLLOC_CTX *ctx             Talloc context to work on
 192  * const char *state_flags      State flag string
 193  * int len                      length of the data block
 194  */
 195 static char *smb_traffic_analyzer_create_header( TALLOC_CTX *ctx,
 196         const char *state_flags, size_t data_len)
 197 {
 198         char *header = talloc_asprintf( ctx, "V2.%s%017u",
 199                                         state_flags, data_len);
 200         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created Header:\n"));
 201         dump_data(10, header, strlen(header));
 202         return header;
 203 }
 204
 205
 206 /**
 207  * Actually send header and data over the network
 208  * char *header         Header data
 209  * char *data           Data Block
 210  * int dlength          Length of data block
 211  * int socket
 212  */
 213 static void smb_traffic_analyzer_write_data( char *header, char *data,
 214                         int dlength, int socket)
 215 {
 216                 int len = strlen(header);
 217                 if (write_data( socket, header, len) != len) {
 218                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 219                                                 "error sending the header"
 220                                                 " over the socket!\n"));
 221                 }
 222                 DEBUG(10,("smb_traffic_analyzer_write_data: sending data:\n"));
 223                 dump_data( 10, data, dlength);
 224
 225                 if (write_data( socket, data, dlength) != dlength) {
 226                         DEBUG(1, ("smb_traffic_analyzer_write_data: "
 227                                 "error sending crypted data to socket!\n"));
 228                 }
 229 }
 230
 231
 232 /*
 233  * Anonymize a string if required.
 234  * TALLOC_CTX *ctx                      The talloc context to work on
 235  * const char *str                      The string to anonymize
 236  * vfs_handle_struct *handle            The handle struct to work on
 237  *
 238  * Returns a newly allocated string, either the anonymized one,
 239  * or a copy of const char *str. The caller has to take care for
 240  * freeing the allocated memory.
 241  */
 242 static char *smb_traffic_analyzer_anonymize( TALLOC_CTX *ctx,
 243                                         const char *str,
 244                                         vfs_handle_struct *handle )
 245 {
 246         const char *total_anonymization;
 247         const char *anon_prefix;
 248         char *output;
 249         total_anonymization=lp_parm_const_string(SNUM(handle->conn),
 250                                         "smb_traffic_analyzer",
 251                                         "total_anonymization", NULL);
 252
 253         anon_prefix=lp_parm_const_string(SNUM(handle->conn),
 254                                         "smb_traffic_analyzer",
 255                                         "anonymize_prefix", NULL );
 256         if (anon_prefix != NULL) {
 257                 if (total_anonymization != NULL) {
 258                         output = talloc_asprintf(ctx, "%s",
 259                                         anon_prefix);
 260                 } else {
 261                 output = talloc_asprintf(ctx, "%s%i", anon_prefix,
 262                                                 str_checksum(str));
 263                 }
 264         } else {
 265                 output = talloc_asprintf(ctx, "%s", str);
 266         }
 267
 268         return output;
 269 }
 270
 271
 272 /* The marshaller for the protocol version 2. */
 273 static char *smb_traffic_analyzer_create_string( TALLOC_CTX *ctx,
 274         struct tm *tm, int seconds, vfs_handle_struct *handle, \
 275         char *username, int vfs_operation, int count, ... )
 276 {
 277
 278         va_list ap;
 279         char *arg = NULL;
 280         int len;
 281         char *header = NULL;
 282         char *buf = NULL;
 283         char *timestr = NULL;
 284         char *opstr = NULL;
 285         char *sidstr = NULL;
 286         char *usersid = NULL;
 287         /*
 288          * first create the data that is transfered with any VFS op
 289          * These are, in the following order:
 290          *(0) number of data to come [6 in v2.0]
 291          * 1.vfs_operation identifier
 292          * 2.username
 293          * 3.user-SID
 294          * 4.affected share
 295          * 5.domain
 296          * 6.timestamp
 297          */
 298
 299         /* number of common data blocks to come */
 300         opstr = talloc_asprintf( ctx, "%i", SMBTA_COMMON_DATA_COUNT);
 301         len = strlen(opstr);
 302         buf = talloc_asprintf( ctx, "%04u%s", len, opstr);
 303         talloc_free(opstr);
 304         /* vfs operation identifier */
 305         opstr = talloc_asprintf( ctx, "%i", vfs_operation);
 306         len = strlen(opstr);
 307         buf = talloc_asprintf_append( buf, "%04u%s", len, opstr);
 308         talloc_free(opstr);
 309         /*
 310          * Handle anonymization. In protocol v2, we have to anonymize
 311          * both the SID and the username. The name is already
 312          * anonymized if needed, by the calling function.
 313          */
 314         usersid = dom_sid_string( ctx,
 315                 &handle->conn->server_info->ptok->user_sids[0]);
 316         sidstr = smb_traffic_analyzer_anonymize(ctx, usersid, handle);
 317         talloc_free(usersid);
 318         /* username */
 319         len = strlen( username );
 320         buf = talloc_asprintf_append(buf, "%04u%s", len, username);
 321         /* user SID */
 322         len = strlen( sidstr );
 323         buf = talloc_asprintf_append(buf, "%04u%s", len, sidstr);
 324         talloc_free(sidstr);
 325         /* affected share */
 326         len = strlen( handle->conn->connectpath );
 327         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 328                 handle->conn->connectpath );
 329         /* user's domain */
 330         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 331         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 332                 pdb_get_domain(handle->conn->server_info->sam_account) );
 333         /* time stamp */
 334         timestr = talloc_asprintf( ctx, \
 335                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 336                 tm->tm_year+1900, \
 337                 tm->tm_mon+1, \
 338                 tm->tm_mday, \
 339                 tm->tm_hour, \
 340                 tm->tm_min, \
 341                 tm->tm_sec, \
 342                 (int)seconds);
 343         len = strlen( timestr );
 344         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 345         talloc_free(timestr);
 346         /* data blocks depending on the VFS function */
 347         va_start( ap, count );
 348         while ( count-- ) {
 349                 arg = va_arg( ap, char * );
 350                 /*
 351                  *  protocol v2 sends a four byte string
 352                  * as a header to each block, including
 353                  * the numbers of bytes to come in the
 354                  * next string.
 355                  */
 356                 len = strlen( arg );
 357                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 358         }
 359         va_end( ap );
 360         return buf;
 361 }
 362
 363 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 364                                         void *data,
 365                                         enum vfs_id vfs_operation )
 366 {
 367         struct refcounted_sock *rf_sock = NULL;
 368         struct timeval tv;
 369         time_t tv_sec;
 370         struct tm *tm = NULL;
 371         int seconds;
 372         char *str = NULL;
 373         char *username = NULL;
 374         char *header = NULL;
 375         const char *protocol_version = NULL;
 376         bool Write = false;
 377         size_t len;
 378
 379         /*
 380          * The state flags are part of the header
 381          * and are descripted in the protocol description
 382          * in vfs_smb_traffic_analyzer.h. They begin at byte
 383          * 03 of the header.
 384          */
 385         char state_flags[9] = "000000\0";
 386
 387         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 388
 389         if (rf_sock == NULL || rf_sock->sock == -1) {
 390                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 391                         "closed\n"));
 392                 return;
 393         }
 394
 395         GetTimeOfDay(&tv);
 396         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 397         tm = localtime(&tv_sec);
 398         if (!tm) {
 399                 return;
 400         }
 401         seconds=(float) (tv.tv_usec / 1000);
 402
 403         /*
 404          * Check if anonymization is required, and if yes do this only for
 405          * the username here, needed vor protocol version 1. In v2 we
 406          * additionally anonymize the SID, which is done in it's marshalling
 407          * function.
 408          */
 409         username = smb_traffic_analyzer_anonymize( talloc_tos(),
 410                         handle->conn->server_info->sanitized_username,
 411                         handle);
 412
 413         if (!username) {
 414                 return;
 415         }
 416
 417         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 418                                         "smb_traffic_analyzer",
 419                                         "protocol_version", NULL );
 420
 421
 422         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 423
 424                 struct rw_data *s_data = (struct rw_data *) data;
 425
 426                 /*
 427                  * in case of protocol v1, ignore any vfs operations
 428                  * except read,pread,write,pwrite, and set the "Write"
 429                  * bool accordingly, send data and return.
 430                  */
 431                 if ( vfs_operation > vfs_id_pwrite ) return;
 432
 433                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 434                         else Write=true;
 435
 436                 str = talloc_asprintf(talloc_tos(),
 437                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 438                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 439                         (unsigned int) s_data->len,
 440                         username,
 441                         pdb_get_domain(handle->conn->server_info->sam_account),
 442                         Write ? 'W' : 'R',
 443                         handle->conn->connectpath,
 444                         s_data->filename,
 445                         tm->tm_year+1900,
 446                         tm->tm_mon+1,
 447                         tm->tm_mday,
 448                         tm->tm_hour,
 449                         tm->tm_min,
 450                         tm->tm_sec,
 451                         (int)seconds);
 452                 if (write_data(rf_sock->sock, str, len) != len) {
 453                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 454                         "error sending V1 protocol data to socket!\n"));
 455                 return;
 456                 }
 457
 458         } else if ( strcmp( protocol_version, "V2") == 0) {
 459
 460                 switch( vfs_operation ) {
 461                 case vfs_id_mkdir: ;
 462                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 463                                 tm, seconds, handle, username, vfs_id_mkdir, \
 464                                 3, ((struct mkdir_data *) data)->path, \
 465                                 talloc_asprintf( talloc_tos(), "%u", \
 466                                 ((struct mkdir_data *) data)->mode), \
 467                                 talloc_asprintf( talloc_tos(), "%u", \
 468                                 ((struct mkdir_data *) data)->result ));
 469                         break;
 470                 case vfs_id_rmdir: ;
 471                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 472                                 tm, seconds, handle, username, vfs_id_rmdir,
 473                                 2, ((struct rmdir_data *) data)->path, \
 474                                 talloc_asprintf( talloc_tos(), "%u", \
 475                                 ((struct rmdir_data *) data)->result ));
 476                         break;
 477                 case vfs_id_rename: ;
 478                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 479                                 tm, seconds, handle, username, vfs_id_rename,
 480                                 3, ((struct rename_data *) data)->src, \
 481                                 ((struct rename_data *) data)->dst,
 482                                 talloc_asprintf(talloc_tos(), "%u", \
 483                                 ((struct rename_data *) data)->result));
 484                         break;
 485                 case vfs_id_chdir: ;
 486                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 487                                 tm, seconds, handle, username, vfs_id_chdir,
 488                                 2, ((struct chdir_data *) data)->path, \
 489                                 talloc_asprintf(talloc_tos(), "%u", \
 490                                 ((struct chdir_data *) data)->result));
 491                         break;
 492
 493                 case vfs_id_write:
 494                 case vfs_id_pwrite:
 495                 case vfs_id_read:
 496                 case vfs_id_pread: ;
 497                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 498                                 tm, seconds, handle, username, vfs_operation,
 499                                 2, ((struct rw_data *) data)->filename, \
 500                                 talloc_asprintf(talloc_tos(), "%u", \
 501                                 ((struct rw_data *) data)->len));
 502                         break;
 503                 default:
 504                         DEBUG(1, ("smb_traffic_analyzer: error! "
 505                                 "wrong VFS operation id detected!\n"));
 506                         return;
 507                 }
 508
 509         } else {
 510                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 511                         "error, unkown protocol given!\n"));
 512                 return;
 513         }
 514
 515         if (!str) {
 516                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 517                         "unable to create string to send!\n"));
 518                 return;
 519         }
 520
 521
 522         /*
 523          * If configured, optain the key and run AES encryption
 524          * over the data.
 525          */
 526         size_t size;
 527         become_root();
 528         char *akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
 529         unbecome_root();
 530         if ( akey != NULL ) {
 531                 state_flags[2] = 'E';
 532                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: a key was"
 533                         " found, encrypting data!\n"));
 534                 char *output = smb_traffic_analyzer_encrypt( talloc_tos(),
 535                                                 akey, str, &len);
 536                 header = smb_traffic_analyzer_create_header( talloc_tos(),
 537                                                 state_flags, len);
 538
 539                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 540                         " header created for crypted data: %s\n", header));
 541                 smb_traffic_analyzer_write_data(header, output, len,
 542                                                         rf_sock->sock);
 543                 return;
 544
 545         }
 546
 547         len = strlen(str);
 548         header = smb_traffic_analyzer_create_header( talloc_tos(),
 549                                 state_flags, len);
 550         smb_traffic_analyzer_write_data(header, str, strlen(str),
 551                                 rf_sock->sock);
 552
 553 }
 554
 555 static struct refcounted_sock *sock_list;
 556
 557 static void smb_traffic_analyzer_free_data(void **pptr)
 558 {
 559         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 560         if (rf_sock == NULL) {
 561                 return;
 562         }
 563         rf_sock->ref_count--;
 564         if (rf_sock->ref_count != 0) {
 565                 return;
 566         }
 567         if (rf_sock->sock != -1) {
 568                 close(rf_sock->sock);
 569         }
 570         DLIST_REMOVE(sock_list, rf_sock);
 571         TALLOC_FREE(rf_sock);
 572 }
 573
 574 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 575                          const char *service,
 576                          const char *user)
 577 {
 578         connection_struct *conn = handle->conn;
 579         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 580         struct refcounted_sock *rf_sock = NULL;
 581         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 582                                 lp_parm_const_string(SNUM(conn),
 583                                         "smb_traffic_analyzer",
 584                                 "host", "localhost");
 585         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 586                                 atoi( lp_parm_const_string(SNUM(conn),
 587                                 "smb_traffic_analyzer", "port", "9430"));
 588         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 589
 590         if (ret < 0) {
 591                 return ret;
 592         }
 593
 594         /* Are we already connected ? */
 595         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 596                 if (port == rf_sock->port &&
 597                                 (strcmp(name, rf_sock->name) == 0)) {
 598                         break;
 599                 }
 600         }
 601
 602         /* If we're connected already, just increase the
 603          * reference count. */
 604         if (rf_sock) {
 605                 rf_sock->ref_count++;
 606         } else {
 607                 /* New connection. */
 608                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 609                 if (rf_sock == NULL) {
 610                         SMB_VFS_NEXT_DISCONNECT(handle);
 611                         errno = ENOMEM;
 612                         return -1;
 613                 }
 614                 rf_sock->name = talloc_strdup(rf_sock, name);
 615                 if (rf_sock->name == NULL) {
 616                         SMB_VFS_NEXT_DISCONNECT(handle);
 617                         TALLOC_FREE(rf_sock);
 618                         errno = ENOMEM;
 619                         return -1;
 620                 }
 621                 rf_sock->port = port;
 622                 rf_sock->ref_count = 1;
 623
 624                 if (st == UNIX_DOMAIN_SOCKET) {
 625                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 626                                                         name);
 627                 } else {
 628
 629                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 630                                                         name,
 631                                                         port);
 632                 }
 633                 if (rf_sock->sock == -1) {
 634                         SMB_VFS_NEXT_DISCONNECT(handle);
 635                         TALLOC_FREE(rf_sock);
 636                         return -1;
 637                 }
 638                 DLIST_ADD(sock_list, rf_sock);
 639         }
 640
 641         /* Store the private data. */
 642         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 643                                 struct refcounted_sock, return -1);
 644         return 0;
 645 }
 646
 647 /* VFS Functions */
 648 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 649                         const char *path)
 650 {
 651         struct chdir_data s_data;
 652         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 653         s_data.path = path;
 654         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 655         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 656         return s_data.result;
 657 }
 658
 659 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 660                 const struct smb_filename *smb_fname_src,
 661                 const struct smb_filename *smb_fname_dst)
 662 {
 663         struct rename_data s_data;
 664         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 665                 smb_fname_dst);
 666         s_data.src = smb_fname_src->base_name;
 667         s_data.dst = smb_fname_dst->base_name;
 668         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 669                 smb_fname_src->base_name,
 670                 smb_fname_dst->base_name));
 671         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 672         return s_data.result;
 673 }
 674
 675 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 676                         const char *path)
 677 {
 678         struct rmdir_data s_data;
 679         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 680         s_data.path = path;
 681         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 682         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 683         return s_data.result;
 684 }
 685
 686 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 687                         const char *path, mode_t mode)
 688 {
 689         struct mkdir_data s_data;
 690         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 691         s_data.path = path;
 692         s_data.mode = mode;
 693         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 694         smb_traffic_analyzer_send_data(handle,
 695                         &s_data,
 696                         vfs_id_mkdir);
 697         return s_data.result;
 698 }
 699
 700 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 701                                 files_struct *fsp, void *data, size_t n)
 702 {
 703         struct rw_data s_data;
 704
 705         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 706         s_data.filename = fsp->fsp_name->base_name;
 707         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 708
 709         smb_traffic_analyzer_send_data(handle,
 710                         &s_data,
 711                         vfs_id_read);
 712         return s_data.len;
 713 }
 714
 715
 716 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 717                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 718 {
 719         struct rw_data s_data;
 720
 721         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 722         s_data.filename = fsp->fsp_name->base_name;
 723         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 724                    fsp_str_dbg(fsp)));
 725
 726         smb_traffic_analyzer_send_data(handle,
 727                         &s_data,
 728                         vfs_id_pread);
 729
 730         return s_data.len;
 731 }
 732
 733 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 734                         files_struct *fsp, const void *data, size_t n)
 735 {
 736         struct rw_data s_data;
 737
 738         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 739         s_data.filename = fsp->fsp_name->base_name;
 740         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 741                    fsp_str_dbg(fsp)));
 742
 743         smb_traffic_analyzer_send_data(handle,
 744                         &s_data,
 745                         vfs_id_write);
 746         return s_data.len;
 747 }
 748
 749 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 750              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 751 {
 752         struct rw_data s_data;
 753
 754         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 755         s_data.filename = fsp->fsp_name->base_name;
 756         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 757                 fsp_str_dbg(fsp)));
 758
 759         smb_traffic_analyzer_send_data(handle,
 760                         &s_data,
 761                         vfs_id_pwrite);
 762         return s_data.len;
 763 }
 764
 765 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 766         .connect_fn = smb_traffic_analyzer_connect,
 767         .vfs_read = smb_traffic_analyzer_read,
 768         .pread = smb_traffic_analyzer_pread,
 769         .write = smb_traffic_analyzer_write,
 770         .pwrite = smb_traffic_analyzer_pwrite,
 771         .mkdir = smb_traffic_analyzer_mkdir,
 772         .rename = smb_traffic_analyzer_rename,
 773         .chdir = smb_traffic_analyzer_chdir
 774 };
 775
 776 /* Module initialization */
 777 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 778 {
 779         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 780                                         "smb_traffic_analyzer",
 781                                         &vfs_smb_traffic_analyzer_fns);
 782
 783         if (!NT_STATUS_IS_OK(ret)) {
 784                 return ret;
 785         }
 786
 787         vfs_smb_traffic_analyzer_debug_level =
 788                 debug_add_class("smb_traffic_analyzer");
 789
 790         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 791                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 792                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 793                          "debugging class!\n"));
 794         } else {
 795                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 796                         "'smb_traffic_analyzer': %d\n", \
 797                         vfs_smb_traffic_analyzer_debug_level));
 798         }
 799
 800         return ret;
 801 }