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/smbd.h"
  24 #include "../smbd/globals.h"
  25 #include "../lib/crypto/crypto.h"
  26 #include "vfs_smb_traffic_analyzer.h"
  27 #include "../libcli/security/security.h"
  28 #include "secrets.h"
  29 #include "../librpc/gen_ndr/ndr_netlogon.h"
  30 #include "auth.h"
  31 #include "../lib/tsocket/tsocket.h"
  32 #include "lib/util/sys_rw_data.h"
  33
  34 /* abstraction for the send_over_network function */
  35 enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
  36
  37 #define LOCAL_PATHNAME "/var/tmp/stadsocket"
  38
  39 static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
  40
  41 static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
  42 {
  43         connection_struct *conn = handle->conn;
  44         const char *Mode;
  45         Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
  46                         "internet_socket");
  47         if (strstr(Mode,"unix_domain_socket")) {
  48                 return UNIX_DOMAIN_SOCKET;
  49         } else {
  50                 return INTERNET_SOCKET;
  51         }
  52 }
  53
  54
  55 /* Connect to an internet socket */
  56 static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
  57                                         const char *name, uint16_t port)
  58 {
  59         /* Create a streaming Socket */
  60         int sockfd = -1;
  61         struct addrinfo hints;
  62         struct addrinfo *ailist = NULL;
  63         struct addrinfo *res = NULL;
  64         int ret;
  65
  66         ZERO_STRUCT(hints);
  67         /* By default make sure it supports TCP. */
  68         hints.ai_socktype = SOCK_STREAM;
  69         hints.ai_flags = AI_ADDRCONFIG;
  70
  71         ret = getaddrinfo(name,
  72                         NULL,
  73                         &hints,
  74                         &ailist);
  75
  76         if (ret) {
  77                 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
  78                         "getaddrinfo failed for name %s [%s]\n",
  79                         name,
  80                         gai_strerror(ret) ));
  81                 return -1;
  82         }
  83
  84         DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
  85                 "Port: %i\n", name, port));
  86
  87         for (res = ailist; res; res = res->ai_next) {
  88                 struct sockaddr_storage ss;
  89                 NTSTATUS status;
  90
  91                 if (!res->ai_addr || res->ai_addrlen == 0) {
  92                         continue;
  93                 }
  94
  95                 ZERO_STRUCT(ss);
  96                 memcpy(&ss, res->ai_addr, res->ai_addrlen);
  97
  98                 status = open_socket_out(&ss, port, 10000, &sockfd);
  99                 if (NT_STATUS_IS_OK(status)) {
 100                         break;
 101                 }
 102         }
 103
 104         if (ailist) {
 105                 freeaddrinfo(ailist);
 106         }
 107
 108         if (sockfd == -1) {
 109                 DEBUG(1, ("smb_traffic_analyzer: unable to create "
 110                         "socket, error is %s",
 111                         strerror(errno)));
 112                 return -1;
 113         }
 114
 115         return sockfd;
 116 }
 117
 118 /* Connect to a unix domain socket */
 119 static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
 120                                                 const char *name)
 121 {
 122         /* Create the socket to stad */
 123         int len, sock;
 124         struct sockaddr_un remote;
 125
 126         DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
 127                         "Unix domain socket mode. Using %s\n",
 128                         name ));
 129
 130         if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
 131                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 132                         "Couldn't create socket, "
 133                         "make sure stad is running!\n"));
 134                 return -1;
 135         }
 136         remote.sun_family = AF_UNIX;
 137         strlcpy(remote.sun_path, name,
 138                     sizeof(remote.sun_path));
 139         len=strlen(remote.sun_path) + sizeof(remote.sun_family);
 140         if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
 141                 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
 142                         "Could not connect to "
 143                         "socket, make sure\nstad is running!\n"));
 144                 close(sock);
 145                 return -1;
 146         }
 147         return sock;
 148 }
 149
 150 /* Private data allowing shared connection sockets. */
 151 struct refcounted_sock {
 152         struct refcounted_sock *next, *prev;
 153         char *name;
 154         uint16_t port;
 155         int sock;
 156         unsigned int ref_count;
 157 };
 158
 159
 160 /**
 161  * Encryption of a data block with AES
 162  * TALLOC_CTX *ctx      Talloc context to work on
 163  * const char *akey     128bit key for the encryption
 164  * const char *str      Data buffer to encrypt, \0 terminated
 165  * int *len             Will be set to the length of the
 166  *                      resulting data block
 167  * The caller has to take care for the memory
 168  * allocated on the context.
 169  */
 170 static char *smb_traffic_analyzer_encrypt( TALLOC_CTX *ctx,
 171         const char *akey, const char *str, size_t *len)
 172 {
 173         int s1,s2,h;
 174         AES_KEY key;
 175         unsigned char filler[17]= "................";
 176         char *output;
 177         if (akey == NULL) return NULL;
 178         AES_set_encrypt_key((const unsigned char *) akey, 128, &key);
 179         s1 = strlen(str) / 16;
 180         s2 = strlen(str) % 16;
 181         memcpy(filler, str + (s1*16), s2);
 182         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created %s"
 183                 " as filling block.\n", filler));
 184
 185         *len = ((s1 + 1)*16);
 186         output = talloc_array(ctx, char, *len);
 187         for (h = 0; h < s1; h++) {
 188                 AES_encrypt((const unsigned char *) str+(16*h), (unsigned char *)output+16*h,
 189                         &key);
 190         }
 191         AES_encrypt(filler, (unsigned char *)(output+(16*h)), &key);
 192         *len = (s1*16)+16;
 193         return output;
 194 }
 195
 196 /**
 197  * Create a v2 header.
 198  * TALLLOC_CTX *ctx             Talloc context to work on
 199  * const char *state_flags      State flag string
 200  * int len                      length of the data block
 201  */
 202 static char *smb_traffic_analyzer_create_header( TALLOC_CTX *ctx,
 203         const char *state_flags, size_t data_len)
 204 {
 205         char *header = talloc_asprintf( ctx, "V2.%s%017u",
 206                                         state_flags, (unsigned int) data_len);
 207         DEBUG(10, ("smb_traffic_analyzer_send_data_socket: created Header:\n"));
 208         dump_data(10, (uint8_t *)header, strlen(header));
 209         return header;
 210 }
 211
 212
 213 /**
 214  * Actually send header and data over the network
 215  * char *header         Header data
 216  * char *data           Data Block
 217  * int dlength          Length of data block
 218  * int socket
 219  */
 220 static void smb_traffic_analyzer_write_data( char *header, char *data,
 221                         int dlength, int _socket)
 222 {
 223                 int len = strlen(header);
 224                 if (write_data( _socket, header, len) != len) {
 225                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 226                                                 "error sending the header"
 227                                                 " over the socket!\n"));
 228                 }
 229                 DEBUG(10,("smb_traffic_analyzer_write_data: sending data:\n"));
 230                 dump_data( 10, (uint8_t *)data, dlength);
 231
 232                 if (write_data( _socket, data, dlength) != dlength) {
 233                         DEBUG(1, ("smb_traffic_analyzer_write_data: "
 234                                 "error sending crypted data to socket!\n"));
 235                 }
 236 }
 237
 238
 239 /*
 240  * Anonymize a string if required.
 241  * TALLOC_CTX *ctx                      The talloc context to work on
 242  * const char *str                      The string to anonymize
 243  * vfs_handle_struct *handle            The handle struct to work on
 244  *
 245  * Returns a newly allocated string, either the anonymized one,
 246  * or a copy of const char *str. The caller has to take care for
 247  * freeing the allocated memory.
 248  */
 249 static char *smb_traffic_analyzer_anonymize( TALLOC_CTX *ctx,
 250                                         const char *str,
 251                                         vfs_handle_struct *handle )
 252 {
 253         const char *total_anonymization;
 254         const char *anon_prefix;
 255         char *output;
 256         total_anonymization=lp_parm_const_string(SNUM(handle->conn),
 257                                         "smb_traffic_analyzer",
 258                                         "total_anonymization", NULL);
 259
 260         anon_prefix=lp_parm_const_string(SNUM(handle->conn),
 261                                         "smb_traffic_analyzer",
 262                                         "anonymize_prefix", NULL );
 263         if (anon_prefix != NULL) {
 264                 if (total_anonymization != NULL) {
 265                         output = talloc_asprintf(ctx, "%s",
 266                                         anon_prefix);
 267                 } else {
 268                 output = talloc_asprintf(ctx, "%s%i", anon_prefix,
 269                                                 str_checksum(str));
 270                 }
 271         } else {
 272                 output = talloc_asprintf(ctx, "%s", str);
 273         }
 274
 275         return output;
 276 }
 277
 278
 279 /**
 280  * The marshalling function for protocol v2.
 281  * TALLOC_CTX *ctx              Talloc context to work on
 282  * struct tm *tm                tm struct for the timestamp
 283  * int seconds                  milliseconds of the timestamp
 284  * vfs_handle_struct *handle    vfs_handle_struct
 285  * char *username               Name of the user
 286  * int vfs_operation            VFS operation identifier
 287  * int count                    Number of the common data blocks
 288  * [...] variable args          data blocks taken from the individual
 289  *                              VFS data structures
 290  *
 291  * Returns the complete data block to send. The caller has to
 292  * take care for freeing the allocated buffer.
 293  */
 294 static char *smb_traffic_analyzer_create_string( TALLOC_CTX *ctx,
 295         struct tm *tm, int seconds, vfs_handle_struct *handle, \
 296         char *username, int vfs_operation, int count, ... )
 297 {
 298
 299         va_list ap;
 300         char *arg = NULL;
 301         int len;
 302         char *common_data_count_str = NULL;
 303         char *timestr = NULL;
 304         char *sidstr = NULL;
 305         char *usersid = NULL;
 306         char *raddr = NULL;
 307         char *buf = NULL;
 308         char *vfs_operation_str = NULL;
 309         const char *service_name = lp_const_servicename(handle->conn->params->service);
 310
 311         /*
 312          * first create the data that is transfered with any VFS op
 313          * These are, in the following order:
 314          *(0) number of data to come [6 in v2.0]
 315          * 1.vfs_operation identifier
 316          * 2.username
 317          * 3.user-SID
 318          * 4.affected share
 319          * 5.domain
 320          * 6.timestamp
 321          * 7.IP Addresss of client
 322          */
 323
 324         /*
 325          * number of common data blocks to come,
 326          * this is a #define in vfs_smb_traffic_anaylzer.h,
 327          * it's length is known at compile time
 328          */
 329         common_data_count_str = talloc_strdup( ctx, SMBTA_COMMON_DATA_COUNT);
 330         /* vfs operation identifier */
 331         vfs_operation_str = talloc_asprintf( common_data_count_str, "%i",
 332                                                         vfs_operation);
 333         /*
 334          * Handle anonymization. In protocol v2, we have to anonymize
 335          * both the SID and the username. The name is already
 336          * anonymized if needed, by the calling function.
 337          */
 338         usersid = dom_sid_string( common_data_count_str,
 339                 &handle->conn->session_info->security_token->sids[0]);
 340
 341         sidstr = smb_traffic_analyzer_anonymize(
 342                 common_data_count_str,
 343                 usersid,
 344                 handle);
 345
 346         raddr = tsocket_address_inet_addr_string(handle->conn->sconn->remote_address,
 347                                                  ctx);
 348         if (raddr == NULL) {
 349                 return NULL;
 350         }
 351
 352         /* time stamp */
 353         timestr = talloc_asprintf( common_data_count_str, \
 354                 "%04d-%02d-%02d %02d:%02d:%02d.%03d", \
 355                 tm->tm_year+1900, \
 356                 tm->tm_mon+1, \
 357                 tm->tm_mday, \
 358                 tm->tm_hour, \
 359                 tm->tm_min, \
 360                 tm->tm_sec, \
 361                 (int)seconds);
 362         len = strlen( timestr );
 363         /* create the string of common data */
 364         buf = talloc_asprintf(ctx,
 365                 "%s%04u%s%04u%s%04u%s%04u%s%04u%s%04u%s%04u%s",
 366                 common_data_count_str,
 367                 (unsigned int) strlen(vfs_operation_str),
 368                 vfs_operation_str,
 369                 (unsigned int) strlen(username),
 370                 username,
 371                 (unsigned int) strlen(sidstr),
 372                 sidstr,
 373                 (unsigned int) strlen(service_name),
 374                 service_name,
 375                 (unsigned int)
 376                 strlen(handle->conn->session_info->info->domain_name),
 377                 handle->conn->session_info->info->domain_name,
 378                 (unsigned int) strlen(timestr),
 379                 timestr,
 380                 (unsigned int) strlen(raddr),
 381                 raddr);
 382
 383         talloc_free(common_data_count_str);
 384
 385         /* data blocks depending on the VFS function */
 386         va_start( ap, count );
 387         while ( count-- ) {
 388                 arg = va_arg( ap, char * );
 389                 /*
 390                  *  protocol v2 sends a four byte string
 391                  * as a header to each block, including
 392                  * the numbers of bytes to come in the
 393                  * next string.
 394                  */
 395                 len = strlen( arg );
 396                 buf = talloc_asprintf_append( buf, "%04u%s", len, arg);
 397         }
 398         va_end( ap );
 399         return buf;
 400 }
 401
 402 static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
 403                                         void *data,
 404                                         enum vfs_id vfs_operation )
 405 {
 406         struct refcounted_sock *rf_sock = NULL;
 407         struct timeval tv;
 408         time_t tv_sec;
 409         struct tm *tm = NULL;
 410         int seconds;
 411         char *str = NULL;
 412         char *username = NULL;
 413         char *header = NULL;
 414         const char *protocol_version = NULL;
 415         bool Write = false;
 416         size_t len;
 417         size_t size;
 418         char *akey, *output;
 419
 420         /*
 421          * The state flags are part of the header
 422          * and are descripted in the protocol description
 423          * in vfs_smb_traffic_analyzer.h. They begin at byte
 424          * 03 of the header.
 425          */
 426         char state_flags[9] = "000000\0";
 427
 428         /**
 429          * The first byte of the state flag string represents
 430          * the modules protocol subversion number, defined
 431          * in smb_traffic_analyzer.h. smbtatools/smbtad are designed
 432          * to handle not yet implemented protocol enhancements
 433          * by ignoring them. By recognizing the SMBTA_SUBRELEASE
 434          * smbtatools can tell the user to update the client
 435          * software.
 436          */
 437         state_flags[0] = SMBTA_SUBRELEASE;
 438
 439         SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
 440
 441         if (rf_sock == NULL || rf_sock->sock == -1) {
 442                 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
 443                         "closed\n"));
 444                 return;
 445         }
 446
 447         GetTimeOfDay(&tv);
 448         tv_sec = tv.tv_sec;
 449         tm = localtime(&tv_sec);
 450         if (!tm) {
 451                 return;
 452         }
 453         seconds=(float) (tv.tv_usec / 1000);
 454
 455         /*
 456          * Check if anonymization is required, and if yes do this only for
 457          * the username here, needed vor protocol version 1. In v2 we
 458          * additionally anonymize the SID, which is done in it's marshalling
 459          * function.
 460          */
 461         username = smb_traffic_analyzer_anonymize( talloc_tos(),
 462                         handle->conn->session_info->unix_info->sanitized_username,
 463                         handle);
 464
 465         if (!username) {
 466                 return;
 467         }
 468
 469         protocol_version = lp_parm_const_string(SNUM(handle->conn),
 470                                         "smb_traffic_analyzer",
 471                                         "protocol_version", NULL );
 472
 473
 474         if (protocol_version != NULL && strcmp(protocol_version,"V1") == 0) {
 475
 476                 struct rw_data *s_data = (struct rw_data *) data;
 477
 478                 /*
 479                  * in case of protocol v1, ignore any vfs operations
 480                  * except read,pread,write,pwrite, and set the "Write"
 481                  * bool accordingly, send data and return.
 482                  */
 483                 if ( vfs_operation > vfs_id_pwrite ) return;
 484
 485                 if ( vfs_operation <= vfs_id_pread ) Write=false;
 486                         else Write=true;
 487
 488                 str = talloc_asprintf(talloc_tos(),
 489                         "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
 490                         "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
 491                         (unsigned int) s_data->len,
 492                         username,
 493                         handle->conn->session_info->info->domain_name,
 494                         Write ? 'W' : 'R',
 495                         handle->conn->cwd,
 496                         s_data->filename,
 497                         tm->tm_year+1900,
 498                         tm->tm_mon+1,
 499                         tm->tm_mday,
 500                         tm->tm_hour,
 501                         tm->tm_min,
 502                         tm->tm_sec,
 503                         (int)seconds);
 504                 len = strlen(str);
 505                 if (write_data(rf_sock->sock, str, len) != len) {
 506                         DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
 507                         "error sending V1 protocol data to socket!\n"));
 508                 return;
 509                 }
 510
 511         } else {
 512                 /**
 513                  * Protocol 2 is used by default.
 514                  */
 515
 516                 switch( vfs_operation ) {
 517                 case vfs_id_open: ;
 518                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 519                                 tm, seconds, handle, username, vfs_id_open,
 520                                 3, ((struct open_data *) data)->filename,
 521                                 talloc_asprintf( talloc_tos(), "%u",
 522                                 (unsigned int)((struct open_data *) data)->mode),
 523                                 talloc_asprintf( talloc_tos(), "%u",
 524                                 ((struct open_data *) data)->result));
 525                         break;
 526                 case vfs_id_close: ;
 527                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 528                                 tm, seconds, handle, username, vfs_id_close,
 529                                 2, ((struct close_data *) data)->filename,
 530                                 talloc_asprintf( talloc_tos(), "%u",
 531                                 ((struct close_data *) data)->result));
 532                         break;
 533                 case vfs_id_mkdir: ;
 534                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 535                                 tm, seconds, handle, username, vfs_id_mkdir, \
 536                                 3, ((struct mkdir_data *) data)->path, \
 537                                 talloc_asprintf( talloc_tos(), "%u", \
 538                                 (unsigned int)((struct mkdir_data *) data)->mode), \
 539                                 talloc_asprintf( talloc_tos(), "%u", \
 540                                 ((struct mkdir_data *) data)->result ));
 541                         break;
 542                 case vfs_id_rmdir: ;
 543                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 544                                 tm, seconds, handle, username, vfs_id_rmdir,
 545                                 2, ((struct rmdir_data *) data)->path, \
 546                                 talloc_asprintf( talloc_tos(), "%u", \
 547                                 ((struct rmdir_data *) data)->result ));
 548                         break;
 549                 case vfs_id_rename: ;
 550                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 551                                 tm, seconds, handle, username, vfs_id_rename,
 552                                 3, ((struct rename_data *) data)->src, \
 553                                 ((struct rename_data *) data)->dst,
 554                                 talloc_asprintf(talloc_tos(), "%u", \
 555                                 ((struct rename_data *) data)->result));
 556                         break;
 557                 case vfs_id_chdir: ;
 558                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 559                                 tm, seconds, handle, username, vfs_id_chdir,
 560                                 2, ((struct chdir_data *) data)->path, \
 561                                 talloc_asprintf(talloc_tos(), "%u", \
 562                                 ((struct chdir_data *) data)->result));
 563                         break;
 564
 565                 case vfs_id_write:
 566                 case vfs_id_pwrite:
 567                 case vfs_id_read:
 568                 case vfs_id_pread: ;
 569                         str = smb_traffic_analyzer_create_string( talloc_tos(),
 570                                 tm, seconds, handle, username, vfs_operation,
 571                                 2, ((struct rw_data *) data)->filename, \
 572                                 talloc_asprintf(talloc_tos(), "%u", \
 573                                 (unsigned int)
 574                                         ((struct rw_data *) data)->len));
 575                         break;
 576                 default:
 577                         DEBUG(1, ("smb_traffic_analyzer: error! "
 578                                 "wrong VFS operation id detected!\n"));
 579                         return;
 580                 }
 581
 582         }
 583
 584         if (!str) {
 585                 DEBUG(1, ("smb_traffic_analyzer_send_data: "
 586                         "unable to create string to send!\n"));
 587                 return;
 588         }
 589
 590
 591         /*
 592          * If configured, optain the key and run AES encryption
 593          * over the data.
 594          */
 595         become_root();
 596         akey = (char *) secrets_fetch("smb_traffic_analyzer_key", &size);
 597         unbecome_root();
 598         if ( akey != NULL ) {
 599                 state_flags[2] = 'E';
 600                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: a key was"
 601                         " found, encrypting data!\n"));
 602                 output = smb_traffic_analyzer_encrypt( talloc_tos(),
 603                                                 akey, str, &len);
 604                 SAFE_FREE(akey);
 605                 header = smb_traffic_analyzer_create_header( talloc_tos(),
 606                                                 state_flags, len);
 607
 608                 DEBUG(10, ("smb_traffic_analyzer_send_data_socket:"
 609                         " header created for crypted data: %s\n", header));
 610                 smb_traffic_analyzer_write_data(header, output, len,
 611                                                         rf_sock->sock);
 612                 return;
 613
 614         }
 615
 616         len = strlen(str);
 617         header = smb_traffic_analyzer_create_header( talloc_tos(),
 618                                 state_flags, len);
 619         smb_traffic_analyzer_write_data(header, str, strlen(str),
 620                                 rf_sock->sock);
 621
 622 }
 623
 624 static struct refcounted_sock *sock_list;
 625
 626 static void smb_traffic_analyzer_free_data(void **pptr)
 627 {
 628         struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
 629         if (rf_sock == NULL) {
 630                 return;
 631         }
 632         rf_sock->ref_count--;
 633         if (rf_sock->ref_count != 0) {
 634                 return;
 635         }
 636         if (rf_sock->sock != -1) {
 637                 close(rf_sock->sock);
 638         }
 639         DLIST_REMOVE(sock_list, rf_sock);
 640         TALLOC_FREE(rf_sock);
 641 }
 642
 643 static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
 644                          const char *service,
 645                          const char *user)
 646 {
 647         connection_struct *conn = handle->conn;
 648         enum sock_type st = smb_traffic_analyzer_connMode(handle);
 649         struct refcounted_sock *rf_sock = NULL;
 650         const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
 651                                 lp_parm_const_string(SNUM(conn),
 652                                         "smb_traffic_analyzer",
 653                                 "host", "localhost");
 654         uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
 655                                 atoi( lp_parm_const_string(SNUM(conn),
 656                                 "smb_traffic_analyzer", "port", "9430"));
 657         int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
 658
 659         if (ret < 0) {
 660                 return ret;
 661         }
 662
 663         /* Are we already connected ? */
 664         for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
 665                 if (port == rf_sock->port &&
 666                                 (strcmp(name, rf_sock->name) == 0)) {
 667                         break;
 668                 }
 669         }
 670
 671         /* If we're connected already, just increase the
 672          * reference count. */
 673         if (rf_sock) {
 674                 rf_sock->ref_count++;
 675         } else {
 676                 /* New connection. */
 677                 rf_sock = talloc_zero(NULL, struct refcounted_sock);
 678                 if (rf_sock == NULL) {
 679                         SMB_VFS_NEXT_DISCONNECT(handle);
 680                         errno = ENOMEM;
 681                         return -1;
 682                 }
 683                 rf_sock->name = talloc_strdup(rf_sock, name);
 684                 if (rf_sock->name == NULL) {
 685                         SMB_VFS_NEXT_DISCONNECT(handle);
 686                         TALLOC_FREE(rf_sock);
 687                         errno = ENOMEM;
 688                         return -1;
 689                 }
 690                 rf_sock->port = port;
 691                 rf_sock->ref_count = 1;
 692
 693                 if (st == UNIX_DOMAIN_SOCKET) {
 694                         rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
 695                                                         name);
 696                 } else {
 697
 698                         rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
 699                                                         name,
 700                                                         port);
 701                 }
 702                 if (rf_sock->sock == -1) {
 703                         SMB_VFS_NEXT_DISCONNECT(handle);
 704                         TALLOC_FREE(rf_sock);
 705                         return -1;
 706                 }
 707                 DLIST_ADD(sock_list, rf_sock);
 708         }
 709
 710         /* Store the private data. */
 711         SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
 712                                 struct refcounted_sock, return -1);
 713         return 0;
 714 }
 715
 716 /* VFS Functions */
 717 static int smb_traffic_analyzer_chdir(vfs_handle_struct *handle, \
 718                         const char *path)
 719 {
 720         struct chdir_data s_data;
 721         s_data.result = SMB_VFS_NEXT_CHDIR(handle, path);
 722         s_data.path = path;
 723         DEBUG(10, ("smb_traffic_analyzer_chdir: CHDIR: %s\n", path));
 724         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_chdir);
 725         return s_data.result;
 726 }
 727
 728 static int smb_traffic_analyzer_rename(vfs_handle_struct *handle, \
 729                 const struct smb_filename *smb_fname_src,
 730                 const struct smb_filename *smb_fname_dst)
 731 {
 732         struct rename_data s_data;
 733         s_data.result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, \
 734                 smb_fname_dst);
 735         s_data.src = smb_fname_src->base_name;
 736         s_data.dst = smb_fname_dst->base_name;
 737         DEBUG(10, ("smb_traffic_analyzer_rename: RENAME: %s / %s\n",
 738                 smb_fname_src->base_name,
 739                 smb_fname_dst->base_name));
 740         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rename);
 741         return s_data.result;
 742 }
 743
 744 static int smb_traffic_analyzer_rmdir(vfs_handle_struct *handle, \
 745                         const char *path)
 746 {
 747         struct rmdir_data s_data;
 748         s_data.result = SMB_VFS_NEXT_RMDIR(handle, path);
 749         s_data.path = path;
 750         DEBUG(10, ("smb_traffic_analyzer_rmdir: RMDIR: %s\n", path));
 751         smb_traffic_analyzer_send_data(handle, &s_data, vfs_id_rmdir);
 752         return s_data.result;
 753 }
 754
 755 static int smb_traffic_analyzer_mkdir(vfs_handle_struct *handle, \
 756                         const char *path, mode_t mode)
 757 {
 758         struct mkdir_data s_data;
 759         s_data.result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
 760         s_data.path = path;
 761         s_data.mode = mode;
 762         DEBUG(10, ("smb_traffic_analyzer_mkdir: MKDIR: %s\n", path));
 763         smb_traffic_analyzer_send_data(handle,
 764                         &s_data,
 765                         vfs_id_mkdir);
 766         return s_data.result;
 767 }
 768
 769 static ssize_t smb_traffic_analyzer_sendfile(vfs_handle_struct *handle,
 770                                 int tofd,
 771                                 files_struct *fromfsp,
 772                                 const DATA_BLOB *hdr,
 773                                 off_t offset,
 774                                 size_t n)
 775 {
 776         struct rw_data s_data;
 777         s_data.len = SMB_VFS_NEXT_SENDFILE(handle,
 778                         tofd, fromfsp, hdr, offset, n);
 779         s_data.filename = fromfsp->fsp_name->base_name;
 780         DEBUG(10, ("smb_traffic_analyzer_sendfile: sendfile(r): %s\n",
 781                 fsp_str_dbg(fromfsp)));
 782         smb_traffic_analyzer_send_data(handle,
 783                 &s_data,
 784                 vfs_id_read);
 785         return s_data.len;
 786 }
 787
 788 static ssize_t smb_traffic_analyzer_recvfile(vfs_handle_struct *handle,
 789                                 int fromfd,
 790                                 files_struct *tofsp,
 791                                 off_t offset,
 792                                 size_t n)
 793 {
 794         struct rw_data s_data;
 795         s_data.len = SMB_VFS_NEXT_RECVFILE(handle,
 796                         fromfd, tofsp, offset, n);
 797         s_data.filename = tofsp->fsp_name->base_name;
 798         DEBUG(10, ("smb_traffic_analyzer_recvfile: recvfile(w): %s\n",
 799                 fsp_str_dbg(tofsp)));
 800         smb_traffic_analyzer_send_data(handle,
 801                 &s_data,
 802                 vfs_id_write);
 803         return s_data.len;
 804 }
 805
 806
 807 static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
 808                                 files_struct *fsp, void *data, size_t n)
 809 {
 810         struct rw_data s_data;
 811
 812         s_data.len = SMB_VFS_NEXT_READ(handle, fsp, data, n);
 813         s_data.filename = fsp->fsp_name->base_name;
 814         DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
 815
 816         smb_traffic_analyzer_send_data(handle,
 817                         &s_data,
 818                         vfs_id_read);
 819         return s_data.len;
 820 }
 821
 822
 823 static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
 824                 files_struct *fsp, void *data, size_t n, off_t offset)
 825 {
 826         struct rw_data s_data;
 827
 828         s_data.len = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
 829         s_data.filename = fsp->fsp_name->base_name;
 830         DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
 831                    fsp_str_dbg(fsp)));
 832
 833         smb_traffic_analyzer_send_data(handle,
 834                         &s_data,
 835                         vfs_id_pread);
 836
 837         return s_data.len;
 838 }
 839
 840 static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
 841                         files_struct *fsp, const void *data, size_t n)
 842 {
 843         struct rw_data s_data;
 844
 845         s_data.len = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
 846         s_data.filename = fsp->fsp_name->base_name;
 847         DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
 848                    fsp_str_dbg(fsp)));
 849
 850         smb_traffic_analyzer_send_data(handle,
 851                         &s_data,
 852                         vfs_id_write);
 853         return s_data.len;
 854 }
 855
 856 static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
 857              files_struct *fsp, const void *data, size_t n, off_t offset)
 858 {
 859         struct rw_data s_data;
 860
 861         s_data.len = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
 862         s_data.filename = fsp->fsp_name->base_name;
 863         DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", \
 864                 fsp_str_dbg(fsp)));
 865
 866         smb_traffic_analyzer_send_data(handle,
 867                         &s_data,
 868                         vfs_id_pwrite);
 869         return s_data.len;
 870 }
 871
 872 static int smb_traffic_analyzer_open(vfs_handle_struct *handle, \
 873         struct smb_filename *smb_fname, files_struct *fsp,\
 874         int flags, mode_t mode)
 875 {
 876         struct open_data s_data;
 877
 878         s_data.result = SMB_VFS_NEXT_OPEN( handle, smb_fname, fsp,
 879                         flags, mode);
 880         DEBUG(10,("smb_traffic_analyzer_open: OPEN: %s\n",
 881                 fsp_str_dbg(fsp)));
 882         s_data.filename = fsp->fsp_name->base_name;
 883         s_data.mode = mode;
 884         smb_traffic_analyzer_send_data(handle,
 885                         &s_data,
 886                         vfs_id_open);
 887         return s_data.result;
 888 }
 889
 890 static int smb_traffic_analyzer_close(vfs_handle_struct *handle, \
 891         files_struct *fsp)
 892 {
 893         struct close_data s_data;
 894         s_data.result = SMB_VFS_NEXT_CLOSE(handle, fsp);
 895         DEBUG(10,("smb_traffic_analyzer_close: CLOSE: %s\n",
 896                 fsp_str_dbg(fsp)));
 897         s_data.filename = fsp->fsp_name->base_name;
 898         smb_traffic_analyzer_send_data(handle,
 899                         &s_data,
 900                         vfs_id_close);
 901         return s_data.result;
 902 }
 903
 904
 905 static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
 906         .connect_fn = smb_traffic_analyzer_connect,
 907         .read_fn = smb_traffic_analyzer_read,
 908         .pread_fn = smb_traffic_analyzer_pread,
 909         .write_fn = smb_traffic_analyzer_write,
 910         .pwrite_fn = smb_traffic_analyzer_pwrite,
 911         .mkdir_fn = smb_traffic_analyzer_mkdir,
 912         .rename_fn = smb_traffic_analyzer_rename,
 913         .chdir_fn = smb_traffic_analyzer_chdir,
 914         .open_fn = smb_traffic_analyzer_open,
 915         .rmdir_fn = smb_traffic_analyzer_rmdir,
 916         .close_fn = smb_traffic_analyzer_close,
 917         .sendfile_fn = smb_traffic_analyzer_sendfile,
 918         .recvfile_fn = smb_traffic_analyzer_recvfile
 919 };
 920
 921 /* Module initialization */
 922 static_decl_vfs;
 923 NTSTATUS vfs_smb_traffic_analyzer_init(void)
 924 {
 925         NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
 926                                         "smb_traffic_analyzer",
 927                                         &vfs_smb_traffic_analyzer_fns);
 928
 929         if (!NT_STATUS_IS_OK(ret)) {
 930                 return ret;
 931         }
 932
 933         vfs_smb_traffic_analyzer_debug_level =
 934                 debug_add_class("smb_traffic_analyzer");
 935
 936         if (vfs_smb_traffic_analyzer_debug_level == -1) {
 937                 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
 938                 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
 939                          "debugging class!\n"));
 940         } else {
 941                 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
 942                         "'smb_traffic_analyzer': %d\n", \
 943                         vfs_smb_traffic_analyzer_debug_level));
 944         }
 945
 946         return ret;
 947 }