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 /* The marshaller for the protocol version 2. */
 232 static char *smb_traffic_analyzer_create_string( TALLOC_CTX *ctx,
 233         struct tm *tm, int seconds, vfs_handle_struct *handle, \
 234         char *username, int vfs_operation, int count, ... )
 235 {
 236
 237         va_list ap;
 238         char *arg = NULL;
 239         int len;
 240         char *header = NULL;
 241         char *buf = NULL;
 242         char *timestr = NULL;
 243         char *opstr = NULL;
 244         char *sidstr = NULL;
 245         char *userstr = NULL;
 246         char *usersid = NULL;
 247         const char *total_anonymization = NULL;
 248         const char *anon_prefix = NULL;
 249         /*
 250          * first create the data that is transfered with any VFS op
 251          * These are, in the following order:
 252          *(0) number of data to come [6 in v2.0]
 253          * 1.vfs_operation identifier
 254          * 2.username
 255          * 3.user-SID
 256          * 4.affected share
 257          * 5.domain
 258          * 6.timestamp
 259          */
 260
 261         /* number of common data blocks to come */
 262         opstr = talloc_asprintf( ctx, "%i", SMBTA_COMMON_DATA_COUNT);
 263         len = strlen(opstr);
 264         buf = talloc_asprintf( ctx, "%04u%s", len, opstr);
 265         talloc_free(opstr);
 266         /* vfs operation identifier */
 267         opstr = talloc_asprintf( ctx, "%i", vfs_operation);
 268         len = strlen(opstr);
 269         buf = talloc_asprintf_append( buf, "%04u%s", len, opstr);
 270         talloc_free(opstr);
 271         /*
 272          * Handle anonymization. In protocol v2, we have to anonymize
 273          * both the SID and the username.
 274          */
 275         total_anonymization=lp_parm_const_string(SNUM(handle->conn),
 276                                         "smb_traffic_analyzer",
 277                                         "total_anonymization", NULL);
 278
 279         anon_prefix=lp_parm_const_string(SNUM(handle->conn),
 280                                         "smb_traffic_analyzer",
 281                                         "anonymize_prefix", NULL );
 282         usersid = dom_sid_string( ctx,
 283                 &handle->conn->server_info->ptok->user_sids[0]);
 284         if (anon_prefix != NULL) {
 285                 if (total_anonymization != NULL) {
 286                         userstr = talloc_asprintf(ctx, "%s",
 287                                                         anon_prefix);
 288                         sidstr = talloc_asprintf(ctx, "%s",
 289                                                         anon_prefix);
 290                 } else {
 291                         userstr = talloc_asprintf(ctx, "%s%i",
 292                                 anon_prefix,
 293                                 str_checksum(username));
 294                         sidstr = talloc_asprintf(ctx, "%s%i",
 295                                 anon_prefix,
 296                                 str_checksum(usersid));
 297                 }
 298         } else {
 299                 userstr = username;
 300                 sidstr = usersid;
 301         }
 302
 303         /* username */
 304         len = strlen( userstr );
 305         buf = talloc_asprintf_append(buf, "%04u%s", len, userstr);
 306         if (anon_prefix != NULL) talloc_free(userstr);
 307         /* user SID */
 308         len = strlen( sidstr );
 309         buf = talloc_asprintf_append(buf, "%04u%s", len, sidstr);
 310         if (anon_prefix != NULL) talloc_free(sidstr);
 311         /* affected share */
 312         len = strlen( handle->conn->connectpath );
 313         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 314                 handle->conn->connectpath );
 315         /* user's domain */
 316         len = strlen( pdb_get_domain(handle->conn->server_info->sam_account) );
 317         buf = talloc_asprintf_append( buf, "%04u%s", len, \
 318                 pdb_get_domain(handle->conn->server_info->sam_account) );
 319         /* time stamp */
 320         timestr = talloc_asprintf( ctx, \
 321                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 322                 tm->tm_year+1900, \
 323                 tm->tm_mon+1, \
 324                 tm->tm_mday, \
 325                 tm->tm_hour, \
 326                 tm->tm_min, \
 327                 tm->tm_sec, \
 328                 (int)seconds);
 329         len = strlen( timestr );
 330         buf = talloc_asprintf_append( buf, "%04u%s", len, timestr);
 331         talloc_free(timestr);
 332         /* data blocks depending on the VFS function */
 333         va_start( ap, count );
 334         while ( count-- ) {
 335                 arg = va_arg( ap, char * );
 336                 /*
 337                  *  protocol v2 sends a four byte string
 338                  * as a header to each block, including
 339                  * the numbers of bytes to come in the
 340                  * next string.
 341                  */
 342                 len = strlen( arg );
 343                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 344         }
 345         va_end( ap );
 346         return buf;
 347 }
 348
 349 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 350                                         void *data,
 351                                         enum vfs_id vfs_operation )
 352 {
 353         struct refcounted_sock *rf_sock = NULL;
 354         struct timeval tv;
 355         time_t tv_sec;
 356         struct tm *tm = NULL;
 357         int seconds;
 358         char *str = NULL;
 359         char *username = NULL;
 360         char *header = NULL;
 361         const char *anon_prefix = NULL;
 362         const char *total_anonymization = NULL;
 363         const char *protocol_version = NULL;
 364         bool Write = false;
 365         size_t len;
 366
 367         /*
 368          * The state flags are part of the header
 369          * and are descripted in the protocol description
 370          * in vfs_smb_traffic_analyzer.h. They begin at byte
 371          * 03 of the header.
 372          */
 373         char state_flags[9] = "000000\0";
 374
 375         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 376
 377         if (rf_sock == NULL || rf_sock->sock == -1) {
 378                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 379                         "closed\n"));
 380                 return;
 381         }
 382
 383         GetTimeOfDay(&tv);
 384         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 385         tm = localtime(&tv_sec);
 386         if (!tm) {
 387                 return;
 388         }
 389         seconds=(float) (tv.tv_usec / 1000);
 390
 391         /*
 392          * Check if anonymization is required, and if yes do this only if
 393          * we run on protocol version 1. Anonynization for protocol v2 is
 394          * handled in it's marshaller function.
 395          */
 396         total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
 397                                         "total_anonymization", NULL);
 398
 399         anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
 400                                         "anonymize_prefix", NULL );
 401
 402         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 403                                         "smb_traffic_analyzer",
 404                                         "protocol_version", NULL );
 405
 406         if (anon_prefix!=NULL && strcmp(protocol_version,"V2") != 0) {
 407                 if (total_anonymization!=NULL) {
 408                         username = talloc_asprintf(talloc_tos(),
 409                                 "%s",
 410                                 anon_prefix);
 411                 } else {
 412                         username = talloc_asprintf(talloc_tos(),
 413                                 "%s%i",
 414                                 anon_prefix,
 415                                 str_checksum(
 416                                         handle->conn->server_info->sanitized_username ) );
 417                 }
 418
 419         } else {
 420                 username = handle->conn->server_info->sanitized_username;
 421         }
 422
 423         if (!username) {
 424                 return;
 425         }
 426
 427         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 428
 429                 struct rw_data *s_data = (struct rw_data *) data;
 430
 431                 /*
 432                  * in case of protocol v1, ignore any vfs operations
 433                  * except read,pread,write,pwrite, and set the "Write"
 434                  * bool accordingly, send data and return.
 435                  */
 436                 if ( vfs_operation > vfs_id_pwrite ) return;
 437
 438                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 439                         else Write=true;
 440
 441                 str = talloc_asprintf(talloc_tos(),
 442                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 443                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 444                         (unsigned int) s_data->len,
 445                         username,
 446                         pdb_get_domain(handle->conn->server_info->sam_account),
 447                         Write ? 'W' : 'R',
 448                         handle->conn->connectpath,
 449                         s_data->filename,
 450                         tm->tm_year+1900,
 451                         tm->tm_mon+1,
 452                         tm->tm_mday,
 453                         tm->tm_hour,
 454                         tm->tm_min,
 455                         tm->tm_sec,
 456                         (int)seconds);
 457                 if (write_data(rf_sock->sock, str, len) != len) {
 458                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 459                         "error sending V1 protocol data to socket!\n"));
 460                 return;
 461                 }
 462
 463         } else if ( strcmp( protocol_version, "V2") == 0) {
 464
 465                 switch( vfs_operation ) {
 466                 case vfs_id_mkdir: ;
 467                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 468                                 tm, seconds, handle, username, vfs_id_mkdir, \
 469                                 3, ((struct mkdir_data *) data)->path, \
 470                                 talloc_asprintf( talloc_tos(), "%u", \
 471                                 ((struct mkdir_data *) data)->mode), \
 472                                 talloc_asprintf( talloc_tos(), "%u", \
 473                                 ((struct mkdir_data *) data)->result ));
 474                         break;
 475                 case vfs_id_rmdir: ;
 476                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 477                                 tm, seconds, handle, username, vfs_id_rmdir,
 478                                 2, ((struct rmdir_data *) data)->path, \
 479                                 talloc_asprintf( talloc_tos(), "%u", \
 480                                 ((struct rmdir_data *) data)->result ));
 481                         break;
 482                 case vfs_id_rename: ;
 483                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 484                                 tm, seconds, handle, username, vfs_id_rename,
 485                                 3, ((struct rename_data *) data)->src, \
 486                                 ((struct rename_data *) data)->dst,
 487                                 talloc_asprintf(talloc_tos(), "%u", \
 488                                 ((struct rename_data *) data)->result));
 489                         break;
 490                 case vfs_id_chdir: ;
 491                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 492                                 tm, seconds, handle, username, vfs_id_chdir,
 493                                 2, ((struct chdir_data *) data)->path, \
 494                                 talloc_asprintf(talloc_tos(), "%u", \
 495                                 ((struct chdir_data *) data)->result));
 496                         break;
 497
 498                 case vfs_id_write:
 499                 case vfs_id_pwrite:
 500                 case vfs_id_read:
 501                 case vfs_id_pread: ;
 502                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 503                                 tm, seconds, handle, username, vfs_operation,
 504                                 2, ((struct rw_data *) data)->filename, \
 505                                 talloc_asprintf(talloc_tos(), "%u", \
 506                                 ((struct rw_data *) data)->len));
 507                         break;
 508                 default:
 509                         DEBUG(1, ("smb_traffic_analyzer: error! "
 510                                 "wrong VFS operation id detected!\n"));
 511                         return;
 512                 }
 513
 514         } else {
 515                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 516                         "error, unkown protocol given!\n"));
 517                 return;
 518         }
 519
 520         if (!str) {
 521                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 522                         "unable to create string to send!\n"));
 523                 return;
 524         }
 525
 526
 527         /*
 528          * If configured, optain the key and run AES encryption
 529          * over the data.
 530          */
 531         size_t size;
 532         become_root();
 533         char *akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
 534         unbecome_root();
 535         if ( akey != NULL ) {
 536                 state_flags[2] = 'E';
 537                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: a key was"
 538                         " found, encrypting data!\n"));
 539                 char *output = smb_traffic_analyzer_encrypt( talloc_tos(),
 540                                                 akey, str, &len);
 541                 header = smb_traffic_analyzer_create_header( talloc_tos(),
 542                                                 state_flags, len);
 543
 544                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 545                         " header created for crypted data: %s\n", header));
 546                 smb_traffic_analyzer_write_data(header, output, len,
 547                                                         rf_sock->sock);
 548                 return;
 549
 550         }
 551
 552         len = strlen(str);
 553         header = smb_traffic_analyzer_create_header( talloc_tos(),
 554                                 state_flags, len);
 555         smb_traffic_analyzer_write_data(header, str, strlen(str),
 556                                 rf_sock->sock);
 557
 558 }
 559
 560 static struct refcounted_sock *sock_list;
 561
 562 static void smb_traffic_analyzer_free_data(void **pptr)
 563 {
 564         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 565         if (rf_sock == NULL) {
 566                 return;
 567         }
 568         rf_sock->ref_count--;
 569         if (rf_sock->ref_count != 0) {
 570                 return;
 571         }
 572         if (rf_sock->sock != -1) {
 573                 close(rf_sock->sock);
 574         }
 575         DLIST_REMOVE(sock_list, rf_sock);
 576         TALLOC_FREE(rf_sock);
 577 }
 578
 579 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 580                          const char *service,
 581                          const char *user)
 582 {
 583         connection_struct *conn = handle->conn;
 584         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 585         struct refcounted_sock *rf_sock = NULL;
 586         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 587                                 lp_parm_const_string(SNUM(conn),
 588                                         "smb_traffic_analyzer",
 589                                 "host", "localhost");
 590         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 591                                 atoi( lp_parm_const_string(SNUM(conn),
 592                                 "smb_traffic_analyzer", "port", "9430"));
 593         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 594
 595         if (ret < 0) {
 596                 return ret;
 597         }
 598
 599         /* Are we already connected ? */
 600         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 601                 if (port == rf_sock->port &&
 602                                 (strcmp(name, rf_sock->name) == 0)) {
 603                         break;
 604                 }
 605         }
 606
 607         /* If we're connected already, just increase the
 608          * reference count. */
 609         if (rf_sock) {
 610                 rf_sock->ref_count++;
 611         } else {
 612                 /* New connection. */
 613                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 614                 if (rf_sock == NULL) {
 615                         SMB_VFS_NEXT_DISCONNECT(handle);
 616                         errno = ENOMEM;
 617                         return -1;
 618                 }
 619                 rf_sock->name = talloc_strdup(rf_sock, name);
 620                 if (rf_sock->name == NULL) {
 621                         SMB_VFS_NEXT_DISCONNECT(handle);
 622                         TALLOC_FREE(rf_sock);
 623                         errno = ENOMEM;
 624                         return -1;
 625                 }
 626                 rf_sock->port = port;
 627                 rf_sock->ref_count = 1;
 628
 629                 if (st == UNIX_DOMAIN_SOCKET) {
 630                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 631                                                         name);
 632                 } else {
 633
 634                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 635                                                         name,
 636                                                         port);
 637                 }
 638                 if (rf_sock->sock == -1) {
 639                         SMB_VFS_NEXT_DISCONNECT(handle);
 640                         TALLOC_FREE(rf_sock);
 641                         return -1;
 642                 }
 643                 DLIST_ADD(sock_list, rf_sock);
 644         }
 645
 646         /* Store the private data. */
 647         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 648                                 struct refcounted_sock, return -1);
 649         return 0;
 650 }
 651
 652 /* VFS Functions */
 653 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 654                         const char *path)
 655 {
 656         struct chdir_data s_data;
 657         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 658         s_data.path = path;
 659         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 660         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 661         return s_data.result;
 662 }
 663
 664 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 665                 const struct smb_filename *smb_fname_src,
 666                 const struct smb_filename *smb_fname_dst)
 667 {
 668         struct rename_data s_data;
 669         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 670                 smb_fname_dst);
 671         s_data.src = smb_fname_src->base_name;
 672         s_data.dst = smb_fname_dst->base_name;
 673         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 674                 smb_fname_src->base_name,
 675                 smb_fname_dst->base_name));
 676         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 677         return s_data.result;
 678 }
 679
 680 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 681                         const char *path)
 682 {
 683         struct rmdir_data s_data;
 684         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 685         s_data.path = path;
 686         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 687         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 688         return s_data.result;
 689 }
 690
 691 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 692                         const char *path, mode_t mode)
 693 {
 694         struct mkdir_data s_data;
 695         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 696         s_data.path = path;
 697         s_data.mode = mode;
 698         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 699         smb_traffic_analyzer_send_data(handle,
 700                         &s_data,
 701                         vfs_id_mkdir);
 702         return s_data.result;
 703 }
 704
 705 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 706                                 files_struct *fsp, void *data, size_t n)
 707 {
 708         struct rw_data s_data;
 709
 710         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 711         s_data.filename = fsp->fsp_name->base_name;
 712         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 713
 714         smb_traffic_analyzer_send_data(handle,
 715                         &s_data,
 716                         vfs_id_read);
 717         return s_data.len;
 718 }
 719
 720
 721 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 722                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 723 {
 724         struct rw_data s_data;
 725
 726         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 727         s_data.filename = fsp->fsp_name->base_name;
 728         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 729                    fsp_str_dbg(fsp)));
 730
 731         smb_traffic_analyzer_send_data(handle,
 732                         &s_data,
 733                         vfs_id_pread);
 734
 735         return s_data.len;
 736 }
 737
 738 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 739                         files_struct *fsp, const void *data, size_t n)
 740 {
 741         struct rw_data s_data;
 742
 743         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 744         s_data.filename = fsp->fsp_name->base_name;
 745         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 746                    fsp_str_dbg(fsp)));
 747
 748         smb_traffic_analyzer_send_data(handle,
 749                         &s_data,
 750                         vfs_id_write);
 751         return s_data.len;
 752 }
 753
 754 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 755              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 756 {
 757         struct rw_data s_data;
 758
 759         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 760         s_data.filename = fsp->fsp_name->base_name;
 761         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 762                 fsp_str_dbg(fsp)));
 763
 764         smb_traffic_analyzer_send_data(handle,
 765                         &s_data,
 766                         vfs_id_pwrite);
 767         return s_data.len;
 768 }
 769
 770 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 771         .connect_fn = smb_traffic_analyzer_connect,
 772         .vfs_read = smb_traffic_analyzer_read,
 773         .pread = smb_traffic_analyzer_pread,
 774         .write = smb_traffic_analyzer_write,
 775         .pwrite = smb_traffic_analyzer_pwrite,
 776         .mkdir = smb_traffic_analyzer_mkdir,
 777         .rename = smb_traffic_analyzer_rename,
 778         .chdir = smb_traffic_analyzer_chdir
 779 };
 780
 781 /* Module initialization */
 782 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 783 {
 784         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 785                                         "smb_traffic_analyzer",
 786                                         &vfs_smb_traffic_analyzer_fns);
 787
 788         if (!NT_STATUS_IS_OK(ret)) {
 789                 return ret;
 790         }
 791
 792         vfs_smb_traffic_analyzer_debug_level =
 793                 debug_add_class("smb_traffic_analyzer");
 794
 795         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 796                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 797                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 798                          "debugging class!\n"));
 799         } else {
 800                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 801                         "'smb_traffic_analyzer': %d\n", \
 802                         vfs_smb_traffic_analyzer_debug_level));
 803         }
 804
 805         return ret;
 806 }