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, 2008-2010
   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         unsigned char filler[17]= "................";
 168         char *output;
 169         unsigned char crypted[18];
 170         if (akey == NULL) return NULL;
 171         samba_AES_set_encrypt_key((unsigned char *) 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((unsigned char *) str+(16*h), crypted, &key);
 181                 for (d = 0; d<16; d++) output[d+(16*h)]=crypted[d];
 182         }
 183         samba_AES_encrypt( (unsigned char *) 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, (unsigned int) data_len);
 200         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created Header:\n"));
 201         dump_data(10, (uint8_t *)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, (uint8_t *)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 /**
 273  * The marshalling function for protocol v2.
 274  * TALLOC_CTX *ctx              Talloc context to work on
 275  * struct tm *tm                tm struct for the timestamp
 276  * int seconds                  milliseconds of the timestamp
 277  * vfs_handle_struct *handle    vfs_handle_struct
 278  * char *username               Name of the user
 279  * int vfs_operation            VFS operation identifier
 280  * int count                    Number of the common data blocks
 281  * [...] variable args          data blocks taken from the individual
 282  *                              VFS data structures
 283  *
 284  * Returns the complete data block to send. The caller has to
 285  * take care for freeing the allocated buffer.
 286  */
 287 static char *smb_traffic_analyzer_create_string( TALLOC_CTX *ctx,
 288         struct tm *tm, int seconds, vfs_handle_struct *handle, \
 289         char *username, int vfs_operation, int count, ... )
 290 {
 291
 292         va_list ap;
 293         char *arg = NULL;
 294         int len;
 295         char *common_data_count_str = NULL;
 296         char *timestr = NULL;
 297         char *sidstr = NULL;
 298         char *usersid = NULL;
 299         char *buf = NULL;
 300         char *vfs_operation_str = NULL;
 301         /*
 302          * first create the data that is transfered with any VFS op
 303          * These are, in the following order:
 304          *(0) number of data to come [6 in v2.0]
 305          * 1.vfs_operation identifier
 306          * 2.username
 307          * 3.user-SID
 308          * 4.affected share
 309          * 5.domain
 310          * 6.timestamp
 311          */
 312
 313         /*
 314          * number of common data blocks to come,
 315          * this is a #define in vfs_smb_traffic_anaylzer.h,
 316          * it's length is known at compile time
 317          */
 318         common_data_count_str = talloc_strdup( ctx, SMBTA_COMMON_DATA_COUNT);
 319         /* vfs operation identifier */
 320         vfs_operation_str = talloc_asprintf( common_data_count_str, "%i",
 321                                                         vfs_operation);
 322         /*
 323          * Handle anonymization. In protocol v2, we have to anonymize
 324          * both the SID and the username. The name is already
 325          * anonymized if needed, by the calling function.
 326          */
 327         usersid = dom_sid_string( common_data_count_str,
 328                 &handle->conn->server_info->ptok->user_sids[0]);
 329
 330         sidstr = smb_traffic_analyzer_anonymize(
 331                 common_data_count_str,
 332                 usersid,
 333                 handle);
 334
 335         /* time stamp */
 336         timestr = talloc_asprintf( common_data_count_str, \
 337                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 338                 tm->tm_year+1900, \
 339                 tm->tm_mon+1, \
 340                 tm->tm_mday, \
 341                 tm->tm_hour, \
 342                 tm->tm_min, \
 343                 tm->tm_sec, \
 344                 (int)seconds);
 345         len = strlen( timestr );
 346         /* create the string of common data */
 347         buf = talloc_asprintf(ctx,
 348                 "%s%04u%s%04u%s%04u%s%04u%s%04u%s%04u%s",
 349                 common_data_count_str,
 350                 (unsigned int) strlen(vfs_operation_str),
 351                 vfs_operation_str,
 352                 (unsigned int) strlen(username),
 353                 username,
 354                 (unsigned int) strlen(sidstr),
 355                 sidstr,
 356                 (unsigned int) strlen(handle->conn->connectpath),
 357                 handle->conn->connectpath,
 358                 (unsigned int)
 359                 strlen(handle->conn->server_info->info3->base.domain.string),
 360                 handle->conn->server_info->info3->base.domain.string,
 361                 (unsigned int) strlen(timestr),
 362                 timestr);
 363
 364         talloc_free(common_data_count_str);
 365
 366         /* data blocks depending on the VFS function */
 367         va_start( ap, count );
 368         while ( count-- ) {
 369                 arg = va_arg( ap, char * );
 370                 /*
 371                  *  protocol v2 sends a four byte string
 372                  * as a header to each block, including
 373                  * the numbers of bytes to come in the
 374                  * next string.
 375                  */
 376                 len = strlen( arg );
 377                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 378         }
 379         va_end( ap );
 380         return buf;
 381 }
 382
 383 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 384                                         void *data,
 385                                         enum vfs_id vfs_operation )
 386 {
 387         struct refcounted_sock *rf_sock = NULL;
 388         struct timeval tv;
 389         time_t tv_sec;
 390         struct tm *tm = NULL;
 391         int seconds;
 392         char *str = NULL;
 393         char *username = NULL;
 394         char *header = NULL;
 395         const char *protocol_version = NULL;
 396         bool Write = false;
 397         size_t len;
 398         size_t size;
 399         char *akey, *output;
 400
 401         /*
 402          * The state flags are part of the header
 403          * and are descripted in the protocol description
 404          * in vfs_smb_traffic_analyzer.h. They begin at byte
 405          * 03 of the header.
 406          */
 407         char state_flags[9] = "000000\0";
 408
 409         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 410
 411         if (rf_sock == NULL || rf_sock->sock == -1) {
 412                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 413                         "closed\n"));
 414                 return;
 415         }
 416
 417         GetTimeOfDay(&tv);
 418         tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
 419         tm = localtime(&tv_sec);
 420         if (!tm) {
 421                 return;
 422         }
 423         seconds=(float) (tv.tv_usec / 1000);
 424
 425         /*
 426          * Check if anonymization is required, and if yes do this only for
 427          * the username here, needed vor protocol version 1. In v2 we
 428          * additionally anonymize the SID, which is done in it's marshalling
 429          * function.
 430          */
 431         username = smb_traffic_analyzer_anonymize( talloc_tos(),
 432                         handle->conn->server_info->sanitized_username,
 433                         handle);
 434
 435         if (!username) {
 436                 return;
 437         }
 438
 439         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 440                                         "smb_traffic_analyzer",
 441                                         "protocol_version", NULL );
 442
 443
 444         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 445
 446                 struct rw_data *s_data = (struct rw_data *) data;
 447
 448                 /*
 449                  * in case of protocol v1, ignore any vfs operations
 450                  * except read,pread,write,pwrite, and set the "Write"
 451                  * bool accordingly, send data and return.
 452                  */
 453                 if ( vfs_operation > vfs_id_pwrite ) return;
 454
 455                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 456                         else Write=true;
 457
 458                 str = talloc_asprintf(talloc_tos(),
 459                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 460                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 461                         (unsigned int) s_data->len,
 462                         username,
 463                         handle->conn->server_info->info3->base.domain.string,
 464                         Write ? 'W' : 'R',
 465                         handle->conn->connectpath,
 466                         s_data->filename,
 467                         tm->tm_year+1900,
 468                         tm->tm_mon+1,
 469                         tm->tm_mday,
 470                         tm->tm_hour,
 471                         tm->tm_min,
 472                         tm->tm_sec,
 473                         (int)seconds);
 474                 len = strlen(str);
 475                 if (write_data(rf_sock->sock, str, len) != len) {
 476                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 477                         "error sending V1 protocol data to socket!\n"));
 478                 return;
 479                 }
 480
 481         } else if ( strcmp( protocol_version, "V2") == 0) {
 482
 483                 switch( vfs_operation ) {
 484                 case vfs_id_open: ;
 485                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 486                                 tm, seconds, handle, username, vfs_id_open,
 487                                 3, ((struct open_data *) data)->filename,
 488                                 talloc_asprintf( talloc_tos(), "%u",
 489                                 ((struct open_data *) data)->mode),
 490                                 talloc_asprintf( talloc_tos(), "%u",
 491                                 ((struct open_data *) data)->result));
 492                         break;
 493                 case vfs_id_close: ;
 494                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 495                                 tm, seconds, handle, username, vfs_id_close,
 496                                 2, ((struct close_data *) data)->filename,
 497                                 talloc_asprintf( talloc_tos(), "%u",
 498                                 ((struct close_data *) data)->result));
 499                         break;
 500                 case vfs_id_mkdir: ;
 501                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 502                                 tm, seconds, handle, username, vfs_id_mkdir, \
 503                                 3, ((struct mkdir_data *) data)->path, \
 504                                 talloc_asprintf( talloc_tos(), "%u", \
 505                                 ((struct mkdir_data *) data)->mode), \
 506                                 talloc_asprintf( talloc_tos(), "%u", \
 507                                 ((struct mkdir_data *) data)->result ));
 508                         break;
 509                 case vfs_id_rmdir: ;
 510                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 511                                 tm, seconds, handle, username, vfs_id_rmdir,
 512                                 2, ((struct rmdir_data *) data)->path, \
 513                                 talloc_asprintf( talloc_tos(), "%u", \
 514                                 ((struct rmdir_data *) data)->result ));
 515                         break;
 516                 case vfs_id_rename: ;
 517                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 518                                 tm, seconds, handle, username, vfs_id_rename,
 519                                 3, ((struct rename_data *) data)->src, \
 520                                 ((struct rename_data *) data)->dst,
 521                                 talloc_asprintf(talloc_tos(), "%u", \
 522                                 ((struct rename_data *) data)->result));
 523                         break;
 524                 case vfs_id_chdir: ;
 525                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 526                                 tm, seconds, handle, username, vfs_id_chdir,
 527                                 2, ((struct chdir_data *) data)->path, \
 528                                 talloc_asprintf(talloc_tos(), "%u", \
 529                                 ((struct chdir_data *) data)->result));
 530                         break;
 531
 532                 case vfs_id_write:
 533                 case vfs_id_pwrite:
 534                 case vfs_id_read:
 535                 case vfs_id_pread: ;
 536                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 537                                 tm, seconds, handle, username, vfs_operation,
 538                                 2, ((struct rw_data *) data)->filename, \
 539                                 talloc_asprintf(talloc_tos(), "%u", \
 540                                 (unsigned int)
 541                                         ((struct rw_data *) data)->len));
 542                         break;
 543                 default:
 544                         DEBUG(1, ("smb_traffic_analyzer: error! "
 545                                 "wrong VFS operation id detected!\n"));
 546                         return;
 547                 }
 548
 549         } else {
 550                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 551                         "error, unkown protocol given!\n"));
 552                 return;
 553         }
 554
 555         if (!str) {
 556                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 557                         "unable to create string to send!\n"));
 558                 return;
 559         }
 560
 561
 562         /*
 563          * If configured, optain the key and run AES encryption
 564          * over the data.
 565          */
 566         become_root();
 567         akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
 568         unbecome_root();
 569         if ( akey != NULL ) {
 570                 state_flags[2] = 'E';
 571                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: a key was"
 572                         " found, encrypting data!\n"));
 573                 output = smb_traffic_analyzer_encrypt( talloc_tos(),
 574                                                 akey, str, &len);
 575                 header = smb_traffic_analyzer_create_header( talloc_tos(),
 576                                                 state_flags, len);
 577
 578                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 579                         " header created for crypted data: %s\n", header));
 580                 smb_traffic_analyzer_write_data(header, output, len,
 581                                                         rf_sock->sock);
 582                 return;
 583
 584         }
 585
 586         len = strlen(str);
 587         header = smb_traffic_analyzer_create_header( talloc_tos(),
 588                                 state_flags, len);
 589         smb_traffic_analyzer_write_data(header, str, strlen(str),
 590                                 rf_sock->sock);
 591
 592 }
 593
 594 static struct refcounted_sock *sock_list;
 595
 596 static void smb_traffic_analyzer_free_data(void **pptr)
 597 {
 598         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 599         if (rf_sock == NULL) {
 600                 return;
 601         }
 602         rf_sock->ref_count--;
 603         if (rf_sock->ref_count != 0) {
 604                 return;
 605         }
 606         if (rf_sock->sock != -1) {
 607                 close(rf_sock->sock);
 608         }
 609         DLIST_REMOVE(sock_list, rf_sock);
 610         TALLOC_FREE(rf_sock);
 611 }
 612
 613 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 614                          const char *service,
 615                          const char *user)
 616 {
 617         connection_struct *conn = handle->conn;
 618         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 619         struct refcounted_sock *rf_sock = NULL;
 620         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 621                                 lp_parm_const_string(SNUM(conn),
 622                                         "smb_traffic_analyzer",
 623                                 "host", "localhost");
 624         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 625                                 atoi( lp_parm_const_string(SNUM(conn),
 626                                 "smb_traffic_analyzer", "port", "9430"));
 627         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 628
 629         if (ret < 0) {
 630                 return ret;
 631         }
 632
 633         /* Are we already connected ? */
 634         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 635                 if (port == rf_sock->port &&
 636                                 (strcmp(name, rf_sock->name) == 0)) {
 637                         break;
 638                 }
 639         }
 640
 641         /* If we're connected already, just increase the
 642          * reference count. */
 643         if (rf_sock) {
 644                 rf_sock->ref_count++;
 645         } else {
 646                 /* New connection. */
 647                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 648                 if (rf_sock == NULL) {
 649                         SMB_VFS_NEXT_DISCONNECT(handle);
 650                         errno = ENOMEM;
 651                         return -1;
 652                 }
 653                 rf_sock->name = talloc_strdup(rf_sock, name);
 654                 if (rf_sock->name == NULL) {
 655                         SMB_VFS_NEXT_DISCONNECT(handle);
 656                         TALLOC_FREE(rf_sock);
 657                         errno = ENOMEM;
 658                         return -1;
 659                 }
 660                 rf_sock->port = port;
 661                 rf_sock->ref_count = 1;
 662
 663                 if (st == UNIX_DOMAIN_SOCKET) {
 664                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 665                                                         name);
 666                 } else {
 667
 668                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 669                                                         name,
 670                                                         port);
 671                 }
 672                 if (rf_sock->sock == -1) {
 673                         SMB_VFS_NEXT_DISCONNECT(handle);
 674                         TALLOC_FREE(rf_sock);
 675                         return -1;
 676                 }
 677                 DLIST_ADD(sock_list, rf_sock);
 678         }
 679
 680         /* Store the private data. */
 681         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 682                                 struct refcounted_sock, return -1);
 683         return 0;
 684 }
 685
 686 /* VFS Functions */
 687 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 688                         const char *path)
 689 {
 690         struct chdir_data s_data;
 691         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 692         s_data.path = path;
 693         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 694         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 695         return s_data.result;
 696 }
 697
 698 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 699                 const struct smb_filename *smb_fname_src,
 700                 const struct smb_filename *smb_fname_dst)
 701 {
 702         struct rename_data s_data;
 703         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 704                 smb_fname_dst);
 705         s_data.src = smb_fname_src->base_name;
 706         s_data.dst = smb_fname_dst->base_name;
 707         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 708                 smb_fname_src->base_name,
 709                 smb_fname_dst->base_name));
 710         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 711         return s_data.result;
 712 }
 713
 714 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 715                         const char *path)
 716 {
 717         struct rmdir_data s_data;
 718         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 719         s_data.path = path;
 720         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 721         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 722         return s_data.result;
 723 }
 724
 725 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 726                         const char *path, mode_t mode)
 727 {
 728         struct mkdir_data s_data;
 729         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 730         s_data.path = path;
 731         s_data.mode = mode;
 732         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 733         smb_traffic_analyzer_send_data(handle,
 734                         &s_data,
 735                         vfs_id_mkdir);
 736         return s_data.result;
 737 }
 738
 739 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 740                                 files_struct *fsp, void *data, size_t n)
 741 {
 742         struct rw_data s_data;
 743
 744         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 745         s_data.filename = fsp->fsp_name->base_name;
 746         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 747
 748         smb_traffic_analyzer_send_data(handle,
 749                         &s_data,
 750                         vfs_id_read);
 751         return s_data.len;
 752 }
 753
 754
 755 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 756                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 757 {
 758         struct rw_data s_data;
 759
 760         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 761         s_data.filename = fsp->fsp_name->base_name;
 762         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 763                    fsp_str_dbg(fsp)));
 764
 765         smb_traffic_analyzer_send_data(handle,
 766                         &s_data,
 767                         vfs_id_pread);
 768
 769         return s_data.len;
 770 }
 771
 772 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 773                         files_struct *fsp, const void *data, size_t n)
 774 {
 775         struct rw_data s_data;
 776
 777         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 778         s_data.filename = fsp->fsp_name->base_name;
 779         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 780                    fsp_str_dbg(fsp)));
 781
 782         smb_traffic_analyzer_send_data(handle,
 783                         &s_data,
 784                         vfs_id_write);
 785         return s_data.len;
 786 }
 787
 788 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 789              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 790 {
 791         struct rw_data s_data;
 792
 793         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 794         s_data.filename = fsp->fsp_name->base_name;
 795         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 796                 fsp_str_dbg(fsp)));
 797
 798         smb_traffic_analyzer_send_data(handle,
 799                         &s_data,
 800                         vfs_id_pwrite);
 801         return s_data.len;
 802 }
 803
 804 static int smb_traffic_analyzer_open(vfs_handle_struct *handle, \
 805         struct smb_filename *smb_fname, files_struct *fsp,\
 806         int flags, mode_t mode)
 807 {
 808         struct open_data s_data;
 809
 810         s_data.result = SMB_VFS_NEXT_OPEN( handle, smb_fname, fsp,
 811                         flags, mode);
 812         DEBUG(10,("smb_traffic_analyzer_open: OPEN: %s\n",
 813                 fsp_str_dbg(fsp)));
 814         s_data.filename = fsp->fsp_name->base_name;
 815         s_data.mode = mode;
 816         smb_traffic_analyzer_send_data(handle,
 817                         &s_data,
 818                         vfs_id_open);
 819         return s_data.result;
 820 }
 821
 822 static int smb_traffic_analyzer_close(vfs_handle_struct *handle, \
 823         files_struct *fsp)
 824 {
 825         struct close_data s_data;
 826         s_data.result = SMB_VFS_NEXT_CLOSE(handle, fsp);
 827         DEBUG(10,("smb_traffic_analyzer_close: CLOSE: %s\n",
 828                 fsp_str_dbg(fsp)));
 829         s_data.filename = fsp->fsp_name->base_name;
 830         smb_traffic_analyzer_send_data(handle,
 831                         &s_data,
 832                         vfs_id_close);
 833         return s_data.result;
 834 }
 835
 836
 837 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 838         .connect_fn = smb_traffic_analyzer_connect,
 839         .vfs_read = smb_traffic_analyzer_read,
 840         .pread = smb_traffic_analyzer_pread,
 841         .write = smb_traffic_analyzer_write,
 842         .pwrite = smb_traffic_analyzer_pwrite,
 843         .mkdir = smb_traffic_analyzer_mkdir,
 844         .rename = smb_traffic_analyzer_rename,
 845         .chdir = smb_traffic_analyzer_chdir,
 846         .open = smb_traffic_analyzer_open,
 847         .rmdir = smb_traffic_analyzer_rmdir,
 848         .close_fn = smb_traffic_analyzer_close
 849 };
 850
 851 /* Module initialization */
 852 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 853 {
 854         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 855                                         "smb_traffic_analyzer",
 856                                         &vfs_smb_traffic_analyzer_fns);
 857
 858         if (!NT_STATUS_IS_OK(ret)) {
 859                 return ret;
 860         }
 861
 862         vfs_smb_traffic_analyzer_debug_level =
 863                 debug_add_class("smb_traffic_analyzer");
 864
 865         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 866                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 867                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 868                          "debugging class!\n"));
 869         } else {
 870                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 871                         "'smb_traffic_analyzer': %d\n", \
 872                         vfs_smb_traffic_analyzer_debug_level));
 873         }
 874
 875         return ret;
 876 }