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