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 "../smbd/globals.h"
  24 #include "../lib/crypto/crypto.h"
  25 #include "vfs_smb_traffic_analyzer.h"
  26 #include "../libcli/security/security.h"
  27 #include "secrets.h"
  28 #include "../librpc/gen_ndr/ndr_netlogon.h"
  29
  30 /* abstraction for the send_over_network function */
  31 enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
  32
  33 #define LOCAL_PATHNAME "/var/tmp/stadsocket"
  34
  35 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
  36
  37 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
  38 {
  39         connection_struct *conn = handle->conn;
  40         const char *Mode;
  41         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
  42                         "internet_socket");
  43         if (strstr(Mode,"unix_domain_socket")) {
  44                 return UNIX_DOMAIN_SOCKET;
  45         } else {
  46                 return INTERNET_SOCKET;
  47         }
  48 }
  49
  50
  51 /* Connect to an internet socket */
  52 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
  53                                         const char *name, uint16_t port)
  54 {
  55         /* Create a streaming Socket */
  56         int sockfd = -1;
  57         struct addrinfo hints;
  58         struct addrinfo *ailist = NULL;
  59         struct addrinfo *res = NULL;
  60         int ret;
  61
  62         ZERO_STRUCT(hints);
  63         /* By default make sure it supports TCP. */
  64         hints.ai_socktype = SOCK_STREAM;
  65         hints.ai_flags = AI_ADDRCONFIG;
  66
  67         ret = getaddrinfo(name,
  68                         NULL,
  69                         &hints,
  70                         &ailist);
  71
  72         if (ret) {
  73                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
  74                         "getaddrinfo failed for name %s [%s]\n",
  75                         name,
  76                         gai_strerror(ret) ));
  77                 return -1;
  78         }
  79
  80         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
  81                 "Port: %i\n", name, port));
  82
  83         for (res = ailist; res; res = res->ai_next) {
  84                 struct sockaddr_storage ss;
  85                 NTSTATUS status;
  86
  87                 if (!res->ai_addr || res->ai_addrlen == 0) {
  88                         continue;
  89                 }
  90
  91                 ZERO_STRUCT(ss);
  92                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
  93
  94                 status = open_socket_out(&ss, port, 10000, &sockfd);
  95                 if (NT_STATUS_IS_OK(status)) {
  96                         break;
  97                 }
  98         }
  99
 100         if (ailist) {
 101                 freeaddrinfo(ailist);
 102         }
 103
 104         if (sockfd == -1) {
 105                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 106                         "socket, error is %s",
 107                         strerror(errno)));
 108                 return -1;
 109         }
 110
 111         return sockfd;
 112 }
 113
 114 /* Connect to a unix domain socket */
 115 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 116                                                 const char *name)
 117 {
 118         /* Create the socket to stad */
 119         int len, sock;
 120         struct sockaddr_un remote;
 121
 122         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 123                         "Unix domain socket mode. Using %s\n",
 124                         name ));
 125
 126         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 127                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 128                         "Couldn't create socket, "
 129                         "make sure stad is running!\n"));
 130                 return -1;
 131         }
 132         remote.sun_family = AF_UNIX;
 133         strlcpy(remote.sun_path, name,
 134                     sizeof(remote.sun_path));
 135         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 136         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 137                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 138                         "Could not connect to "
 139                         "socket, make sure\nstad is running!\n"));
 140                 close(sock);
 141                 return -1;
 142         }
 143         return sock;
 144 }
 145
 146 /* Private data allowing shared connection sockets. */
 147 struct refcounted_sock {
 148         struct refcounted_sock *next, *prev;
 149         char *name;
 150         uint16_t port;
 151         int sock;
 152         unsigned int ref_count;
 153 };
 154
 155
 156 /**
 157  * Encryption of a data block with AES
 158  * TALLOC_CTX *ctx      Talloc context to work on
 159  * const char *akey     128bit key for the encryption
 160  * const char *str      Data buffer to encrypt, \0 terminated
 161  * int *len             Will be set to the length of the
 162  *                      resulting data block
 163  * The caller has to take care for the memory
 164  * allocated on the context.
 165  */
 166 static char *smb_traffic_analyzer_encrypt( TALLOC_CTX *ctx,
 167         const char *akey, const char *str, size_t *len)
 168 {
 169         int s1,s2,h,d;
 170         AES_KEY key;
 171         unsigned char filler[17]= "................";
 172         char *output;
 173         unsigned char crypted[18];
 174         if (akey == NULL) return NULL;
 175         samba_AES_set_encrypt_key((unsigned char *) akey, 128, &key);
 176         s1 = strlen(str) / 16;
 177         s2 = strlen(str) % 16;
 178         for (h = 0; h < s2; h++) *(filler+h)=*(str+(s1*16)+h);
 179         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created %s"
 180                 " as filling block.\n", filler));
 181         output = talloc_array(ctx, char, (s1*16)+17 );
 182         d=0;
 183         for (h = 0; h < s1; h++) {
 184                 samba_AES_encrypt((unsigned char *) str+(16*h), crypted, &key);
 185                 for (d = 0; d<16; d++) output[d+(16*h)]=crypted[d];
 186         }
 187         samba_AES_encrypt( (unsigned char *) str+(16*h), filler, &key );
 188         for (d = 0;d < 16; d++) output[d+(16*h)]=*(filler+d);
 189         *len = (s1*16)+16;
 190         return output;
 191 }
 192
 193 /**
 194  * Create a v2 header.
 195  * TALLLOC_CTX *ctx             Talloc context to work on
 196  * const char *state_flags      State flag string
 197  * int len                      length of the data block
 198  */
 199 static char *smb_traffic_analyzer_create_header( TALLOC_CTX *ctx,
 200         const char *state_flags, size_t data_len)
 201 {
 202         char *header = talloc_asprintf( ctx, "V2.%s%017u",
 203                                         state_flags, (unsigned int) data_len);
 204         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created Header:\n"));
 205         dump_data(10, (uint8_t *)header, strlen(header));
 206         return header;
 207 }
 208
 209
 210 /**
 211  * Actually send header and data over the network
 212  * char *header         Header data
 213  * char *data           Data Block
 214  * int dlength          Length of data block
 215  * int socket
 216  */
 217 static void smb_traffic_analyzer_write_data( char *header, char *data,
 218                         int dlength, int _socket)
 219 {
 220                 int len = strlen(header);
 221                 if (write_data( _socket, header, len) != len) {
 222                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 223                                                 "error sending the header"
 224                                                 " over the socket!\n"));
 225                 }
 226                 DEBUG(10,("smb_traffic_analyzer_write_data: sending data:\n"));
 227                 dump_data( 10, (uint8_t *)data, dlength);
 228
 229                 if (write_data( _socket, data, dlength) != dlength) {
 230                         DEBUG(1, ("smb_traffic_analyzer_write_data: "
 231                                 "error sending crypted data to socket!\n"));
 232                 }
 233 }
 234
 235
 236 /*
 237  * Anonymize a string if required.
 238  * TALLOC_CTX *ctx                      The talloc context to work on
 239  * const char *str                      The string to anonymize
 240  * vfs_handle_struct *handle            The handle struct to work on
 241  *
 242  * Returns a newly allocated string, either the anonymized one,
 243  * or a copy of const char *str. The caller has to take care for
 244  * freeing the allocated memory.
 245  */
 246 static char *smb_traffic_analyzer_anonymize( TALLOC_CTX *ctx,
 247                                         const char *str,
 248                                         vfs_handle_struct *handle )
 249 {
 250         const char *total_anonymization;
 251         const char *anon_prefix;
 252         char *output;
 253         total_anonymization=lp_parm_const_string(SNUM(handle->conn),
 254                                         "smb_traffic_analyzer",
 255                                         "total_anonymization", NULL);
 256
 257         anon_prefix=lp_parm_const_string(SNUM(handle->conn),
 258                                         "smb_traffic_analyzer",
 259                                         "anonymize_prefix", NULL );
 260         if (anon_prefix != NULL) {
 261                 if (total_anonymization != NULL) {
 262                         output = talloc_asprintf(ctx, "%s",
 263                                         anon_prefix);
 264                 } else {
 265                 output = talloc_asprintf(ctx, "%s%i", anon_prefix,
 266                                                 str_checksum(str));
 267                 }
 268         } else {
 269                 output = talloc_asprintf(ctx, "%s", str);
 270         }
 271
 272         return output;
 273 }
 274
 275
 276 /**
 277  * The marshalling function for protocol v2.
 278  * TALLOC_CTX *ctx              Talloc context to work on
 279  * struct tm *tm                tm struct for the timestamp
 280  * int seconds                  milliseconds of the timestamp
 281  * vfs_handle_struct *handle    vfs_handle_struct
 282  * char *username               Name of the user
 283  * int vfs_operation            VFS operation identifier
 284  * int count                    Number of the common data blocks
 285  * [...] variable args          data blocks taken from the individual
 286  *                              VFS data structures
 287  *
 288  * Returns the complete data block to send. The caller has to
 289  * take care for freeing the allocated buffer.
 290  */
 291 static char *smb_traffic_analyzer_create_string( TALLOC_CTX *ctx,
 292         struct tm *tm, int seconds, vfs_handle_struct *handle, \
 293         char *username, int vfs_operation, int count, ... )
 294 {
 295
 296         va_list ap;
 297         char *arg = NULL;
 298         int len;
 299         char *common_data_count_str = NULL;
 300         char *timestr = NULL;
 301         char *sidstr = NULL;
 302         char *usersid = NULL;
 303         char *buf = NULL;
 304         char *vfs_operation_str = NULL;
 305         const char *service_name = lp_const_servicename(handle->conn->params->service);
 306
 307         /*
 308          * first create the data that is transfered with any VFS op
 309          * These are, in the following order:
 310          *(0) number of data to come [6 in v2.0]
 311          * 1.vfs_operation identifier
 312          * 2.username
 313          * 3.user-SID
 314          * 4.affected share
 315          * 5.domain
 316          * 6.timestamp
 317          * 7.IP Addresss of client
 318          */
 319
 320         /*
 321          * number of common data blocks to come,
 322          * this is a #define in vfs_smb_traffic_anaylzer.h,
 323          * it's length is known at compile time
 324          */
 325         common_data_count_str = talloc_strdup( ctx, SMBTA_COMMON_DATA_COUNT);
 326         /* vfs operation identifier */
 327         vfs_operation_str = talloc_asprintf( common_data_count_str, "%i",
 328                                                         vfs_operation);
 329         /*
 330          * Handle anonymization. In protocol v2, we have to anonymize
 331          * both the SID and the username. The name is already
 332          * anonymized if needed, by the calling function.
 333          */
 334         usersid = dom_sid_string( common_data_count_str,
 335                 &handle->conn->session_info->security_token->sids[0]);
 336
 337         sidstr = smb_traffic_analyzer_anonymize(
 338                 common_data_count_str,
 339                 usersid,
 340                 handle);
 341
 342         /* time stamp */
 343         timestr = talloc_asprintf( common_data_count_str, \
 344                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 345                 tm->tm_year+1900, \
 346                 tm->tm_mon+1, \
 347                 tm->tm_mday, \
 348                 tm->tm_hour, \
 349                 tm->tm_min, \
 350                 tm->tm_sec, \
 351                 (int)seconds);
 352         len = strlen( timestr );
 353         /* create the string of common data */
 354         buf = talloc_asprintf(ctx,
 355                 "%s%04u%s%04u%s%04u%s%04u%s%04u%s%04u%s%04u%s",
 356                 common_data_count_str,
 357                 (unsigned int) strlen(vfs_operation_str),
 358                 vfs_operation_str,
 359                 (unsigned int) strlen(username),
 360                 username,
 361                 (unsigned int) strlen(sidstr),
 362                 sidstr,
 363                 (unsigned int) strlen(service_name),
 364                 service_name,
 365                 (unsigned int)
 366                 strlen(handle->conn->session_info->info3->base.domain.string),
 367                 handle->conn->session_info->info3->base.domain.string,
 368                 (unsigned int) strlen(timestr),
 369                 timestr,
 370                 (unsigned int) strlen(handle->conn->sconn->client_id.addr),
 371                 handle->conn->sconn->client_id.addr);
 372
 373         talloc_free(common_data_count_str);
 374
 375         /* data blocks depending on the VFS function */
 376         va_start( ap, count );
 377         while ( count-- ) {
 378                 arg = va_arg( ap, char * );
 379                 /*
 380                  *  protocol v2 sends a four byte string
 381                  * as a header to each block, including
 382                  * the numbers of bytes to come in the
 383                  * next string.
 384                  */
 385                 len = strlen( arg );
 386                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 387         }
 388         va_end( ap );
 389         return buf;
 390 }
 391
 392 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 393                                         void *data,
 394                                         enum vfs_id vfs_operation )
 395 {
 396         struct refcounted_sock *rf_sock = NULL;
 397         struct timeval tv;
 398         time_t tv_sec;
 399         struct tm *tm = NULL;
 400         int seconds;
 401         char *str = NULL;
 402         char *username = NULL;
 403         char *header = NULL;
 404         const char *protocol_version = NULL;
 405         bool Write = false;
 406         size_t len;
 407         size_t size;
 408         char *akey, *output;
 409
 410         /*
 411          * The state flags are part of the header
 412          * and are descripted in the protocol description
 413          * in vfs_smb_traffic_analyzer.h. They begin at byte
 414          * 03 of the header.
 415          */
 416         char state_flags[9] = "000000\0";
 417
 418         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 419
 420         if (rf_sock == NULL || rf_sock->sock == -1) {
 421                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 422                         "closed\n"));
 423                 return;
 424         }
 425
 426         GetTimeOfDay(&tv);
 427         tv_sec = tv.tv_sec;
 428         tm = localtime(&tv_sec);
 429         if (!tm) {
 430                 return;
 431         }
 432         seconds=(float) (tv.tv_usec / 1000);
 433
 434         /*
 435          * Check if anonymization is required, and if yes do this only for
 436          * the username here, needed vor protocol version 1. In v2 we
 437          * additionally anonymize the SID, which is done in it's marshalling
 438          * function.
 439          */
 440         username = smb_traffic_analyzer_anonymize( talloc_tos(),
 441                         handle->conn->session_info->sanitized_username,
 442                         handle);
 443
 444         if (!username) {
 445                 return;
 446         }
 447
 448         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 449                                         "smb_traffic_analyzer",
 450                                         "protocol_version", NULL );
 451
 452
 453         if ( protocol_version == NULL || strcmp( protocol_version,"V1") == 0) {
 454
 455                 struct rw_data *s_data = (struct rw_data *) data;
 456
 457                 /*
 458                  * in case of protocol v1, ignore any vfs operations
 459                  * except read,pread,write,pwrite, and set the "Write"
 460                  * bool accordingly, send data and return.
 461                  */
 462                 if ( vfs_operation > vfs_id_pwrite ) return;
 463
 464                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 465                         else Write=true;
 466
 467                 str = talloc_asprintf(talloc_tos(),
 468                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 469                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 470                         (unsigned int) s_data->len,
 471                         username,
 472                         handle->conn->session_info->info3->base.domain.string,
 473                         Write ? 'W' : 'R',
 474                         handle->conn->connectpath,
 475                         s_data->filename,
 476                         tm->tm_year+1900,
 477                         tm->tm_mon+1,
 478                         tm->tm_mday,
 479                         tm->tm_hour,
 480                         tm->tm_min,
 481                         tm->tm_sec,
 482                         (int)seconds);
 483                 len = strlen(str);
 484                 if (write_data(rf_sock->sock, str, len) != len) {
 485                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 486                         "error sending V1 protocol data to socket!\n"));
 487                 return;
 488                 }
 489
 490         } else if ( strcmp( protocol_version, "V2") == 0) {
 491
 492                 switch( vfs_operation ) {
 493                 case vfs_id_open: ;
 494                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 495                                 tm, seconds, handle, username, vfs_id_open,
 496                                 3, ((struct open_data *) data)->filename,
 497                                 talloc_asprintf( talloc_tos(), "%u",
 498                                 ((struct open_data *) data)->mode),
 499                                 talloc_asprintf( talloc_tos(), "%u",
 500                                 ((struct open_data *) data)->result));
 501                         break;
 502                 case vfs_id_close: ;
 503                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 504                                 tm, seconds, handle, username, vfs_id_close,
 505                                 2, ((struct close_data *) data)->filename,
 506                                 talloc_asprintf( talloc_tos(), "%u",
 507                                 ((struct close_data *) data)->result));
 508                         break;
 509                 case vfs_id_mkdir: ;
 510                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 511                                 tm, seconds, handle, username, vfs_id_mkdir, \
 512                                 3, ((struct mkdir_data *) data)->path, \
 513                                 talloc_asprintf( talloc_tos(), "%u", \
 514                                 ((struct mkdir_data *) data)->mode), \
 515                                 talloc_asprintf( talloc_tos(), "%u", \
 516                                 ((struct mkdir_data *) data)->result ));
 517                         break;
 518                 case vfs_id_rmdir: ;
 519                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 520                                 tm, seconds, handle, username, vfs_id_rmdir,
 521                                 2, ((struct rmdir_data *) data)->path, \
 522                                 talloc_asprintf( talloc_tos(), "%u", \
 523                                 ((struct rmdir_data *) data)->result ));
 524                         break;
 525                 case vfs_id_rename: ;
 526                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 527                                 tm, seconds, handle, username, vfs_id_rename,
 528                                 3, ((struct rename_data *) data)->src, \
 529                                 ((struct rename_data *) data)->dst,
 530                                 talloc_asprintf(talloc_tos(), "%u", \
 531                                 ((struct rename_data *) data)->result));
 532                         break;
 533                 case vfs_id_chdir: ;
 534                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 535                                 tm, seconds, handle, username, vfs_id_chdir,
 536                                 2, ((struct chdir_data *) data)->path, \
 537                                 talloc_asprintf(talloc_tos(), "%u", \
 538                                 ((struct chdir_data *) data)->result));
 539                         break;
 540
 541                 case vfs_id_write:
 542                 case vfs_id_pwrite:
 543                 case vfs_id_read:
 544                 case vfs_id_pread: ;
 545                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 546                                 tm, seconds, handle, username, vfs_operation,
 547                                 2, ((struct rw_data *) data)->filename, \
 548                                 talloc_asprintf(talloc_tos(), "%u", \
 549                                 (unsigned int)
 550                                         ((struct rw_data *) data)->len));
 551                         break;
 552                 default:
 553                         DEBUG(1, ("smb_traffic_analyzer: error! "
 554                                 "wrong VFS operation id detected!\n"));
 555                         return;
 556                 }
 557
 558         } else {
 559                 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 560                         "error, unknown protocol given!\n"));
 561                 return;
 562         }
 563
 564         if (!str) {
 565                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 566                         "unable to create string to send!\n"));
 567                 return;
 568         }
 569
 570
 571         /*
 572          * If configured, optain the key and run AES encryption
 573          * over the data.
 574          */
 575         become_root();
 576         akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
 577         unbecome_root();
 578         if ( akey != NULL ) {
 579                 state_flags[2] = 'E';
 580                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: a key was"
 581                         " found, encrypting data!\n"));
 582                 output = smb_traffic_analyzer_encrypt( talloc_tos(),
 583                                                 akey, str, &len);
 584                 header = smb_traffic_analyzer_create_header( talloc_tos(),
 585                                                 state_flags, len);
 586
 587                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 588                         " header created for crypted data: %s\n", header));
 589                 smb_traffic_analyzer_write_data(header, output, len,
 590                                                         rf_sock->sock);
 591                 return;
 592
 593         }
 594
 595         len = strlen(str);
 596         header = smb_traffic_analyzer_create_header( talloc_tos(),
 597                                 state_flags, len);
 598         smb_traffic_analyzer_write_data(header, str, strlen(str),
 599                                 rf_sock->sock);
 600
 601 }
 602
 603 static struct refcounted_sock *sock_list;
 604
 605 static void smb_traffic_analyzer_free_data(void **pptr)
 606 {
 607         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 608         if (rf_sock == NULL) {
 609                 return;
 610         }
 611         rf_sock->ref_count--;
 612         if (rf_sock->ref_count != 0) {
 613                 return;
 614         }
 615         if (rf_sock->sock != -1) {
 616                 close(rf_sock->sock);
 617         }
 618         DLIST_REMOVE(sock_list, rf_sock);
 619         TALLOC_FREE(rf_sock);
 620 }
 621
 622 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 623                          const char *service,
 624                          const char *user)
 625 {
 626         connection_struct *conn = handle->conn;
 627         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 628         struct refcounted_sock *rf_sock = NULL;
 629         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 630                                 lp_parm_const_string(SNUM(conn),
 631                                         "smb_traffic_analyzer",
 632                                 "host", "localhost");
 633         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 634                                 atoi( lp_parm_const_string(SNUM(conn),
 635                                 "smb_traffic_analyzer", "port", "9430"));
 636         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 637
 638         if (ret < 0) {
 639                 return ret;
 640         }
 641
 642         /* Are we already connected ? */
 643         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 644                 if (port == rf_sock->port &&
 645                                 (strcmp(name, rf_sock->name) == 0)) {
 646                         break;
 647                 }
 648         }
 649
 650         /* If we're connected already, just increase the
 651          * reference count. */
 652         if (rf_sock) {
 653                 rf_sock->ref_count++;
 654         } else {
 655                 /* New connection. */
 656                 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
 657                 if (rf_sock == NULL) {
 658                         SMB_VFS_NEXT_DISCONNECT(handle);
 659                         errno = ENOMEM;
 660                         return -1;
 661                 }
 662                 rf_sock->name = talloc_strdup(rf_sock, name);
 663                 if (rf_sock->name == NULL) {
 664                         SMB_VFS_NEXT_DISCONNECT(handle);
 665                         TALLOC_FREE(rf_sock);
 666                         errno = ENOMEM;
 667                         return -1;
 668                 }
 669                 rf_sock->port = port;
 670                 rf_sock->ref_count = 1;
 671
 672                 if (st == UNIX_DOMAIN_SOCKET) {
 673                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 674                                                         name);
 675                 } else {
 676
 677                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 678                                                         name,
 679                                                         port);
 680                 }
 681                 if (rf_sock->sock == -1) {
 682                         SMB_VFS_NEXT_DISCONNECT(handle);
 683                         TALLOC_FREE(rf_sock);
 684                         return -1;
 685                 }
 686                 DLIST_ADD(sock_list, rf_sock);
 687         }
 688
 689         /* Store the private data. */
 690         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 691                                 struct refcounted_sock, return -1);
 692         return 0;
 693 }
 694
 695 /* VFS Functions */
 696 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 697                         const char *path)
 698 {
 699         struct chdir_data s_data;
 700         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 701         s_data.path = path;
 702         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 703         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 704         return s_data.result;
 705 }
 706
 707 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 708                 const struct smb_filename *smb_fname_src,
 709                 const struct smb_filename *smb_fname_dst)
 710 {
 711         struct rename_data s_data;
 712         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 713                 smb_fname_dst);
 714         s_data.src = smb_fname_src->base_name;
 715         s_data.dst = smb_fname_dst->base_name;
 716         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 717                 smb_fname_src->base_name,
 718                 smb_fname_dst->base_name));
 719         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 720         return s_data.result;
 721 }
 722
 723 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 724                         const char *path)
 725 {
 726         struct rmdir_data s_data;
 727         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 728         s_data.path = path;
 729         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 730         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 731         return s_data.result;
 732 }
 733
 734 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 735                         const char *path, mode_t mode)
 736 {
 737         struct mkdir_data s_data;
 738         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 739         s_data.path = path;
 740         s_data.mode = mode;
 741         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 742         smb_traffic_analyzer_send_data(handle,
 743                         &s_data,
 744                         vfs_id_mkdir);
 745         return s_data.result;
 746 }
 747
 748 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 749                                 files_struct *fsp, void *data, size_t n)
 750 {
 751         struct rw_data s_data;
 752
 753         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 754         s_data.filename = fsp->fsp_name->base_name;
 755         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 756
 757         smb_traffic_analyzer_send_data(handle,
 758                         &s_data,
 759                         vfs_id_read);
 760         return s_data.len;
 761 }
 762
 763
 764 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 765                 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
 766 {
 767         struct rw_data s_data;
 768
 769         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 770         s_data.filename = fsp->fsp_name->base_name;
 771         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 772                    fsp_str_dbg(fsp)));
 773
 774         smb_traffic_analyzer_send_data(handle,
 775                         &s_data,
 776                         vfs_id_pread);
 777
 778         return s_data.len;
 779 }
 780
 781 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 782                         files_struct *fsp, const void *data, size_t n)
 783 {
 784         struct rw_data s_data;
 785
 786         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 787         s_data.filename = fsp->fsp_name->base_name;
 788         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 789                    fsp_str_dbg(fsp)));
 790
 791         smb_traffic_analyzer_send_data(handle,
 792                         &s_data,
 793                         vfs_id_write);
 794         return s_data.len;
 795 }
 796
 797 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 798              files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
 799 {
 800         struct rw_data s_data;
 801
 802         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 803         s_data.filename = fsp->fsp_name->base_name;
 804         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 805                 fsp_str_dbg(fsp)));
 806
 807         smb_traffic_analyzer_send_data(handle,
 808                         &s_data,
 809                         vfs_id_pwrite);
 810         return s_data.len;
 811 }
 812
 813 static int smb_traffic_analyzer_open(vfs_handle_struct *handle, \
 814         struct smb_filename *smb_fname, files_struct *fsp,\
 815         int flags, mode_t mode)
 816 {
 817         struct open_data s_data;
 818
 819         s_data.result = SMB_VFS_NEXT_OPEN( handle, smb_fname, fsp,
 820                         flags, mode);
 821         DEBUG(10,("smb_traffic_analyzer_open: OPEN: %s\n",
 822                 fsp_str_dbg(fsp)));
 823         s_data.filename = fsp->fsp_name->base_name;
 824         s_data.mode = mode;
 825         smb_traffic_analyzer_send_data(handle,
 826                         &s_data,
 827                         vfs_id_open);
 828         return s_data.result;
 829 }
 830
 831 static int smb_traffic_analyzer_close(vfs_handle_struct *handle, \
 832         files_struct *fsp)
 833 {
 834         struct close_data s_data;
 835         s_data.result = SMB_VFS_NEXT_CLOSE(handle, fsp);
 836         DEBUG(10,("smb_traffic_analyzer_close: CLOSE: %s\n",
 837                 fsp_str_dbg(fsp)));
 838         s_data.filename = fsp->fsp_name->base_name;
 839         smb_traffic_analyzer_send_data(handle,
 840                         &s_data,
 841                         vfs_id_close);
 842         return s_data.result;
 843 }
 844
 845
 846 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 847         .connect_fn = smb_traffic_analyzer_connect,
 848         .vfs_read = smb_traffic_analyzer_read,
 849         .pread = smb_traffic_analyzer_pread,
 850         .write = smb_traffic_analyzer_write,
 851         .pwrite = smb_traffic_analyzer_pwrite,
 852         .mkdir = smb_traffic_analyzer_mkdir,
 853         .rename = smb_traffic_analyzer_rename,
 854         .chdir = smb_traffic_analyzer_chdir,
 855         .open = smb_traffic_analyzer_open,
 856         .rmdir = smb_traffic_analyzer_rmdir,
 857         .close_fn = smb_traffic_analyzer_close
 858 };
 859
 860 /* Module initialization */
 861 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 862 {
 863         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 864                                         "smb_traffic_analyzer",
 865                                         &vfs_smb_traffic_analyzer_fns);
 866
 867         if (!NT_STATUS_IS_OK(ret)) {
 868                 return ret;
 869         }
 870
 871         vfs_smb_traffic_analyzer_debug_level =
 872                 debug_add_class("smb_traffic_analyzer");
 873
 874         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 875                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 876                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 877                          "debugging class!\n"));
 878         } else {
 879                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 880                         "'smb_traffic_analyzer': %d\n", \
 881                         vfs_smb_traffic_analyzer_debug_level));
 882         }
 883
 884         return ret;
 885 }