citadel/file_ops.c

   1 /*
   2  * Server functions which handle file transfers and room directories.
   3  */
   4
   5 #include "sysdep.h"
   6 #include <stdlib.h>
   7 #include <unistd.h>
   8 #include <stdio.h>
   9 #include <fcntl.h>
  10 #include <sys/stat.h>
  11 #include <errno.h>
  12 #include <ctype.h>
  13 #include <string.h>
  14 #include <sys/stat.h>
  15 #include <sys/mman.h>
  16
  17 #if TIME_WITH_SYS_TIME
  18 # include <sys/time.h>
  19 # include <time.h>
  20 #else
  21 # if HAVE_SYS_TIME_H
  22 #  include <sys/time.h>
  23 # else
  24 #  include <time.h>
  25 # endif
  26 #endif
  27
  28 #include <limits.h>
  29 #include <libcitadel.h>
  30 #include "citadel.h"
  31 #include "server.h"
  32 #include "config.h"
  33 #include "file_ops.h"
  34 #include "sysdep_decls.h"
  35 #include "support.h"
  36 #include "room_ops.h"
  37 #include "msgbase.h"
  38 #include "citserver.h"
  39 #include "threads.h"
  40 #include "ctdl_module.h"
  41 #include "user_ops.h"
  42
  43
  44
  45 /*
  46  * Server command to delete a file from a room's directory
  47  */
  48 void cmd_delf(char *filename)
  49 {
  50         char pathname[64];
  51         int a;
  52
  53         if (CtdlAccessCheck(ac_room_aide))
  54                 return;
  55
  56         if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
  57                 cprintf("%d No directory in this room.\n",
  58                         ERROR + NOT_HERE);
  59                 return;
  60         }
  61
  62         if (IsEmptyStr(filename)) {
  63                 cprintf("%d You must specify a file name.\n",
  64                         ERROR + FILE_NOT_FOUND);
  65                 return;
  66         }
  67         for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
  68                 if ( (filename[a] == '/') || (filename[a] == '\\') ) {
  69                         filename[a] = '_';
  70                 }
  71         }
  72         snprintf(pathname, sizeof pathname,
  73                          "%s/%s/%s",
  74                          ctdl_file_dir,
  75                          CC->room.QRdirname, filename);
  76         a = unlink(pathname);
  77         if (a == 0) {
  78                 cprintf("%d File '%s' deleted.\n", CIT_OK, pathname);
  79         }
  80         else {
  81                 cprintf("%d File '%s' not found.\n",
  82                         ERROR + FILE_NOT_FOUND, pathname);
  83         }
  84 }
  85
  86
  87
  88
  89 /*
  90  * move a file from one room directory to another
  91  */
  92 void cmd_movf(char *cmdbuf)
  93 {
  94         char filename[PATH_MAX];
  95         char pathname[PATH_MAX];
  96         char newpath[PATH_MAX];
  97         char newroom[ROOMNAMELEN];
  98         char buf[PATH_MAX];
  99         int a;
 100         struct ctdlroom qrbuf;
 101
 102         extract_token(filename, cmdbuf, 0, '|', sizeof filename);
 103         extract_token(newroom, cmdbuf, 1, '|', sizeof newroom);
 104
 105         if (CtdlAccessCheck(ac_room_aide)) return;
 106
 107         if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
 108                 cprintf("%d No directory in this room.\n",
 109                         ERROR + NOT_HERE);
 110                 return;
 111         }
 112
 113         if (IsEmptyStr(filename)) {
 114                 cprintf("%d You must specify a file name.\n",
 115                         ERROR + FILE_NOT_FOUND);
 116                 return;
 117         }
 118
 119         for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
 120                 if ( (filename[a] == '/') || (filename[a] == '\\') ) {
 121                         filename[a] = '_';
 122                 }
 123         }
 124         snprintf(pathname, sizeof pathname, "./files/%s/%s",
 125                  CC->room.QRdirname, filename);
 126         if (access(pathname, 0) != 0) {
 127                 cprintf("%d File '%s' not found.\n",
 128                         ERROR + FILE_NOT_FOUND, pathname);
 129                 return;
 130         }
 131
 132         if (CtdlGetRoom(&qrbuf, newroom) != 0) {
 133                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, newroom);
 134                 return;
 135         }
 136         if ((qrbuf.QRflags & QR_DIRECTORY) == 0) {
 137                 cprintf("%d '%s' is not a directory room.\n",
 138                         ERROR + NOT_HERE, qrbuf.QRname);
 139                 return;
 140         }
 141         snprintf(newpath, sizeof newpath, "./files/%s/%s", qrbuf.QRdirname,
 142                  filename);
 143         if (link(pathname, newpath) != 0) {
 144                 cprintf("%d Couldn't move file: %s\n", ERROR + INTERNAL_ERROR,
 145                         strerror(errno));
 146                 return;
 147         }
 148         unlink(pathname);
 149
 150         /* this is a crude method of copying the file description */
 151         snprintf(buf, sizeof buf,
 152                  "cat ./files/%s/filedir |grep \"%s\" >>./files/%s/filedir",
 153                  CC->room.QRdirname, filename, qrbuf.QRdirname);
 154         system(buf);
 155         cprintf("%d File '%s' has been moved.\n", CIT_OK, filename);
 156 }
 157
 158
 159 /*
 160  * This code is common to all commands which open a file for downloading,
 161  * regardless of whether it's a file from the directory, an image, a network
 162  * spool file, a MIME attachment, etc.
 163  * It examines the file and displays the OK result code and some information
 164  * about the file.  NOTE: this stuff is Unix dependent.
 165  */
 166 void OpenCmdResult(char *filename, const char *mime_type)
 167 {
 168         struct stat statbuf;
 169         time_t modtime;
 170         long filesize;
 171
 172         fstat(fileno(CC->download_fp), &statbuf);
 173         CC->download_fp_total = statbuf.st_size;
 174         filesize = (long) statbuf.st_size;
 175         modtime = (time_t) statbuf.st_mtime;
 176
 177         cprintf("%d %ld|%ld|%s|%s\n",
 178                 CIT_OK, filesize, (long)modtime, filename, mime_type);
 179 }
 180
 181
 182 /*
 183  * open a file for downloading
 184  */
 185 void cmd_open(char *cmdbuf)
 186 {
 187         char filename[256];
 188         char pathname[PATH_MAX];
 189         int a;
 190
 191         extract_token(filename, cmdbuf, 0, '|', sizeof filename);
 192
 193         if (CtdlAccessCheck(ac_logged_in)) return;
 194
 195         if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
 196                 cprintf("%d No directory in this room.\n",
 197                         ERROR + NOT_HERE);
 198                 return;
 199         }
 200
 201         if (IsEmptyStr(filename)) {
 202                 cprintf("%d You must specify a file name.\n",
 203                         ERROR + FILE_NOT_FOUND);
 204                 return;
 205         }
 206
 207         if (CC->download_fp != NULL) {
 208                 cprintf("%d You already have a download file open.\n",
 209                         ERROR + RESOURCE_BUSY);
 210                 return;
 211         }
 212
 213         for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
 214                 if ( (filename[a] == '/') || (filename[a] == '\\') ) {
 215                         filename[a] = '_';
 216                 }
 217         }
 218
 219         snprintf(pathname, sizeof pathname,
 220                          "%s/%s/%s",
 221                          ctdl_file_dir,
 222                          CC->room.QRdirname, filename);
 223         CC->download_fp = fopen(pathname, "r");
 224
 225         if (CC->download_fp == NULL) {
 226                 cprintf("%d cannot open %s: %s\n",
 227                         ERROR + INTERNAL_ERROR, pathname, strerror(errno));
 228                 return;
 229         }
 230
 231         OpenCmdResult(filename, "application/octet-stream");
 232 }
 233
 234 /*
 235  * open an image file
 236  */
 237 void cmd_oimg(char *cmdbuf)
 238 {
 239         char filename[256];
 240         char pathname[PATH_MAX];
 241         char MimeTestBuf[32];
 242         struct ctdluser usbuf;
 243         char which_user[USERNAME_SIZE];
 244         int which_floor;
 245         int a;
 246         int rv;
 247
 248         extract_token(filename, cmdbuf, 0, '|', sizeof filename);
 249
 250         if (IsEmptyStr(filename)) {
 251                 cprintf("%d You must specify a file name.\n",
 252                         ERROR + FILE_NOT_FOUND);
 253                 return;
 254         }
 255
 256         if (CC->download_fp != NULL) {
 257                 cprintf("%d You already have a download file open.\n",
 258                         ERROR + RESOURCE_BUSY);
 259                 return;
 260         }
 261
 262         if (!strcasecmp(filename, "_userpic_")) {
 263                 extract_token(which_user, cmdbuf, 1, '|', sizeof which_user);
 264                 if (CtdlGetUser(&usbuf, which_user) != 0) {
 265                         cprintf("%d No such user.\n",
 266                                 ERROR + NO_SUCH_USER);
 267                         return;
 268                 }
 269                 snprintf(pathname, sizeof pathname,
 270                                  "%s/%ld",
 271                                  ctdl_usrpic_dir,
 272                                  usbuf.usernum);
 273         } else if (!strcasecmp(filename, "_floorpic_")) {
 274                 which_floor = extract_int(cmdbuf, 1);
 275                 snprintf(pathname, sizeof pathname,
 276                                  "%s/floor.%d",
 277                                  ctdl_image_dir, which_floor);
 278         } else if (!strcasecmp(filename, "_roompic_")) {
 279                 assoc_file_name(pathname, sizeof pathname, &CC->room, ctdl_image_dir);
 280         } else {
 281                 for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
 282                         filename[a] = tolower(filename[a]);
 283                         if ( (filename[a] == '/') || (filename[a] == '\\') ) {
 284                                 filename[a] = '_';
 285                         }
 286                 }
 287                 snprintf(pathname, sizeof pathname,
 288                                  "%s/%s",
 289                                  ctdl_image_dir,
 290                                  filename);
 291         }
 292
 293         CC->download_fp = fopen(pathname, "rb");
 294         if (CC->download_fp == NULL) {
 295                 strcat(pathname, ".gif");
 296                 CC->download_fp = fopen(pathname, "rb");
 297         }
 298         if (CC->download_fp == NULL) {
 299                 cprintf("%d Cannot open %s: %s\n",
 300                         ERROR + FILE_NOT_FOUND, pathname, strerror(errno));
 301                 return;
 302         }
 303         rv = fread(&MimeTestBuf[0], 1, 32, CC->download_fp);
 304         if (rv == -1) {
 305                 cprintf("%d Cannot access %s: %s\n",
 306                         ERROR + FILE_NOT_FOUND, pathname, strerror(errno));
 307                 return;
 308         }
 309
 310         rewind (CC->download_fp);
 311         OpenCmdResult(pathname, GuessMimeType(&MimeTestBuf[0], 32));
 312 }
 313
 314 /*
 315  * open a file for uploading
 316  */
 317 void cmd_uopn(char *cmdbuf)
 318 {
 319         int a;
 320
 321         extract_token(CC->upl_file, cmdbuf, 0, '|', sizeof CC->upl_file);
 322         extract_token(CC->upl_mimetype, cmdbuf, 1, '|', sizeof CC->upl_mimetype);
 323         extract_token(CC->upl_comment, cmdbuf, 2, '|', sizeof CC->upl_comment);
 324
 325         if (CtdlAccessCheck(ac_logged_in)) return;
 326
 327         if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
 328                 cprintf("%d No directory in this room.\n",
 329                         ERROR + NOT_HERE);
 330                 return;
 331         }
 332
 333         if (IsEmptyStr(CC->upl_file)) {
 334                 cprintf("%d You must specify a file name.\n",
 335                         ERROR + FILE_NOT_FOUND);
 336                 return;
 337         }
 338
 339         if (CC->upload_fp != NULL) {
 340                 cprintf("%d You already have a upload file open.\n",
 341                         ERROR + RESOURCE_BUSY);
 342                 return;
 343         }
 344
 345         for (a = 0; !IsEmptyStr(&CC->upl_file[a]); ++a) {
 346                 if ( (CC->upl_file[a] == '/') || (CC->upl_file[a] == '\\') ) {
 347                         CC->upl_file[a] = '_';
 348                 }
 349         }
 350         snprintf(CC->upl_path, sizeof CC->upl_path,
 351                          "%s/%s/%s",
 352                          ctdl_file_dir,
 353                          CC->room.QRdirname, CC->upl_file);
 354         snprintf(CC->upl_filedir, sizeof CC->upl_filedir,
 355                          "%s/%s/filedir",
 356                          ctdl_file_dir,
 357                          CC->room.QRdirname);
 358
 359         CC->upload_fp = fopen(CC->upl_path, "r");
 360         if (CC->upload_fp != NULL) {
 361                 fclose(CC->upload_fp);
 362                 CC->upload_fp = NULL;
 363                 cprintf("%d '%s' already exists\n",
 364                         ERROR + ALREADY_EXISTS, CC->upl_path);
 365                 return;
 366         }
 367
 368         CC->upload_fp = fopen(CC->upl_path, "wb");
 369         if (CC->upload_fp == NULL) {
 370                 cprintf("%d Cannot open %s: %s\n",
 371                         ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
 372                 return;
 373         }
 374         cprintf("%d Ok\n", CIT_OK);
 375 }
 376
 377
 378
 379 /*
 380  * open an image file for uploading
 381  */
 382 void cmd_uimg(char *cmdbuf)
 383 {
 384         int is_this_for_real;
 385         char basenm[256];
 386         int which_floor;
 387         int a;
 388
 389         if (num_parms(cmdbuf) < 2) {
 390                 cprintf("%d Usage error.\n", ERROR + ILLEGAL_VALUE);
 391                 return;
 392         }
 393
 394         is_this_for_real = extract_int(cmdbuf, 0);
 395         extract_token(CC->upl_mimetype, cmdbuf, 1, '|', sizeof CC->upl_mimetype);
 396         extract_token(basenm, cmdbuf, 2, '|', sizeof basenm);
 397         if (CC->upload_fp != NULL) {
 398                 cprintf("%d You already have an upload file open.\n",
 399                         ERROR + RESOURCE_BUSY);
 400                 return;
 401         }
 402
 403         strcpy(CC->upl_path, "");
 404
 405         for (a = 0; !IsEmptyStr(&basenm[a]); ++a) {
 406                 basenm[a] = tolower(basenm[a]);
 407                 if ( (basenm[a] == '/') || (basenm[a] == '\\') ) {
 408                         basenm[a] = '_';
 409                 }
 410         }
 411
 412         if (CC->user.axlevel >= AxAideU) {
 413                 snprintf(CC->upl_path, sizeof CC->upl_path,
 414                                  "%s/%s",
 415                                  ctdl_image_dir,
 416                                  basenm);
 417         }
 418
 419         if (!strcasecmp(basenm, "_userpic_")) {
 420                 snprintf(CC->upl_path, sizeof CC->upl_path,
 421                                  "%s/%ld.gif",
 422                                  ctdl_usrpic_dir,
 423                                  CC->user.usernum);
 424         }
 425
 426         if ((!strcasecmp(basenm, "_floorpic_"))
 427             && (CC->user.axlevel >= AxAideU)) {
 428                 which_floor = extract_int(cmdbuf, 2);
 429                 snprintf(CC->upl_path, sizeof CC->upl_path,
 430                                  "%s/floor.%d.gif",
 431                                  ctdl_image_dir,
 432                                  which_floor);
 433         }
 434
 435         if ((!strcasecmp(basenm, "_roompic_")) && (is_room_aide())) {
 436                 assoc_file_name(CC->upl_path, sizeof CC->upl_path, &CC->room, ctdl_image_dir);
 437         }
 438
 439         if (IsEmptyStr(CC->upl_path)) {
 440                 cprintf("%d Higher access required.\n",
 441                         ERROR + HIGHER_ACCESS_REQUIRED);
 442                 return;
 443         }
 444
 445         if (is_this_for_real == 0) {
 446                 cprintf("%d Ok to send image\n", CIT_OK);
 447                 return;
 448         }
 449
 450         CC->upload_fp = fopen(CC->upl_path, "wb");
 451         if (CC->upload_fp == NULL) {
 452                 cprintf("%d Cannot open %s: %s\n",
 453                         ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
 454                 return;
 455         }
 456         cprintf("%d Ok\n", CIT_OK);
 457         CC->upload_type = UPL_IMAGE;
 458 }
 459
 460
 461 /*
 462  * close the download file
 463  */
 464 void cmd_clos(char *cmdbuf)
 465 {
 466         char buf[256];
 467
 468         if (CC->download_fp == NULL) {
 469                 cprintf("%d You don't have a download file open.\n",
 470                         ERROR + RESOURCE_NOT_OPEN);
 471                 return;
 472         }
 473
 474         fclose(CC->download_fp);
 475         CC->download_fp = NULL;
 476
 477         if (CC->dl_is_net == 1) {
 478                 CC->dl_is_net = 0;
 479                 snprintf(buf, sizeof buf,
 480                                  "%s/%s",
 481                                  ctdl_netout_dir,
 482                                  CC->net_node);
 483                 unlink(buf);
 484         }
 485
 486         cprintf("%d Ok\n", CIT_OK);
 487 }
 488
 489
 490 /*
 491  * abort an upload
 492  */
 493 void abort_upl(CitContext *who)
 494 {
 495         if (who->upload_fp != NULL) {
 496                 fclose(who->upload_fp);
 497                 who->upload_fp = NULL;
 498                 unlink(CC->upl_path);
 499         }
 500 }
 501
 502
 503
 504 /*
 505  * close the upload file
 506  */
 507 void cmd_ucls(char *cmd)
 508 {
 509         FILE *fp;
 510         char upload_notice[512];
 511         static int seq = 0;
 512
 513         if (CC->upload_fp == NULL) {
 514                 cprintf("%d You don't have an upload file open.\n", ERROR + RESOURCE_NOT_OPEN);
 515                 return;
 516         }
 517
 518         fclose(CC->upload_fp);
 519         CC->upload_fp = NULL;
 520
 521         if ((!strcasecmp(cmd, "1")) && (CC->upload_type != UPL_FILE)) {
 522                 cprintf("%d Upload completed.\n", CIT_OK);
 523
 524                 if (CC->upload_type == UPL_NET) {
 525                         char final_filename[PATH_MAX];
 526                         snprintf(final_filename, sizeof final_filename,
 527                                 "%s/%s.%04lx.%04x",
 528                                 ctdl_netin_dir,
 529                                 CC->net_node,
 530                                 (long)getpid(),
 531                                 ++seq
 532                         );
 533
 534                         if (link(CC->upl_path, final_filename) == 0) {
 535                                 unlink(CC->upl_path);
 536                         }
 537                         else {
 538                                 syslog(LOG_ALERT, "Cannot link %s to %s: %s\n",
 539                                         CC->upl_path, final_filename, strerror(errno)
 540                                 );
 541                         }
 542
 543                         /* FIXME ... here we need to trigger a network run */
 544                 }
 545
 546                 CC->upload_type = UPL_FILE;
 547                 return;
 548         }
 549
 550         if (!strcasecmp(cmd, "1")) {
 551                 cprintf("%d File '%s' saved.\n", CIT_OK, CC->upl_path);
 552                 fp = fopen(CC->upl_filedir, "a");
 553                 if (fp == NULL) {
 554                         fp = fopen(CC->upl_filedir, "w");
 555                 }
 556                 if (fp != NULL) {
 557                         fprintf(fp, "%s %s %s\n", CC->upl_file,
 558                                 CC->upl_mimetype,
 559                                 CC->upl_comment);
 560                         fclose(fp);
 561                 }
 562
 563                 /* put together an upload notice */
 564                 snprintf(upload_notice, sizeof upload_notice,
 565                         "NEW UPLOAD: '%s'\n %s\n%s\n",
 566                          CC->upl_file,
 567                          CC->upl_comment,
 568                          CC->upl_mimetype);
 569                 quickie_message(CC->curr_user, NULL, NULL, CC->room.QRname,
 570                                 upload_notice, 0, NULL);
 571         } else {
 572                 abort_upl(CC);
 573                 cprintf("%d File '%s' aborted.\n", CIT_OK, CC->upl_path);
 574         }
 575 }
 576
 577
 578 /*
 579  * read from the download file
 580  */
 581 void cmd_read(char *cmdbuf)
 582 {
 583         long start_pos;
 584         size_t bytes;
 585         char buf[SIZ];
 586         int rc;
 587
 588         /* The client will transmit its requested offset and byte count */
 589         start_pos = extract_long(cmdbuf, 0);
 590         bytes = extract_int(cmdbuf, 1);
 591         if ((start_pos < 0) || (bytes <= 0)) {
 592                 cprintf("%d you have to specify a value > 0.\n", ERROR + ILLEGAL_VALUE);
 593                 return;
 594         }
 595
 596         if (CC->download_fp == NULL) {
 597                 cprintf("%d You don't have a download file open.\n",
 598                         ERROR + RESOURCE_NOT_OPEN);
 599                 return;
 600         }
 601
 602         /* If necessary, reduce the byte count to the size of our buffer */
 603         if (bytes > sizeof(buf)) {
 604                 bytes = sizeof(buf);
 605         }
 606
 607         rc = fseek(CC->download_fp, start_pos, 0);
 608         if (rc < 0) {
 609                 cprintf("%d your file is smaller then %ld.\n", ERROR + ILLEGAL_VALUE, start_pos);
 610                 syslog(LOG_ALERT, "your file %s is smaller then %ld. [%s]\n",
 611                        CC->upl_path,
 612                        start_pos,
 613                        strerror(errno));
 614
 615                 return;
 616         }
 617         bytes = fread(buf, 1, bytes, CC->download_fp);
 618         if (bytes > 0) {
 619                 /* Tell the client the actual byte count and transmit it */
 620                 cprintf("%d %d\n", BINARY_FOLLOWS, (int)bytes);
 621                 client_write(buf, bytes);
 622         }
 623         else {
 624                 cprintf("%d %s\n", ERROR, strerror(errno));
 625         }
 626 }
 627
 628
 629 /*
 630  * write to the upload file
 631  */
 632 void cmd_writ(char *cmdbuf)
 633 {
 634         int bytes;
 635         char *buf;
 636         int rv;
 637
 638         unbuffer_output();
 639
 640         bytes = extract_int(cmdbuf, 0);
 641
 642         if (CC->upload_fp == NULL) {
 643                 cprintf("%d You don't have an upload file open.\n", ERROR + RESOURCE_NOT_OPEN);
 644                 return;
 645         }
 646         if (bytes <= 0) {
 647                 cprintf("%d you have to specify a value > 0.\n", ERROR + ILLEGAL_VALUE);
 648                 return;
 649         }
 650
 651         if (bytes > 100000) {
 652                 bytes = 100000;
 653         }
 654
 655         cprintf("%d %d\n", SEND_BINARY, bytes);
 656         buf = malloc(bytes + 1);
 657         client_read(buf, bytes);
 658         rv = fwrite(buf, bytes, 1, CC->upload_fp);
 659         if (rv == -1) {
 660                 syslog(LOG_EMERG, "Couldn't write: %s\n",
 661                        strerror(errno));
 662         }
 663         free(buf);
 664 }
 665
 666
 667
 668
 669 /*
 670  * cmd_ndop() - open a network spool file for downloading
 671  */
 672 void cmd_ndop(char *cmdbuf)
 673 {
 674         char pathname[256];
 675         struct stat statbuf;
 676
 677         if (IsEmptyStr(CC->net_node)) {
 678                 cprintf("%d Not authenticated as a network node.\n",
 679                         ERROR + NOT_LOGGED_IN);
 680                 return;
 681         }
 682
 683         if (CC->download_fp != NULL) {
 684                 cprintf("%d You already have a download file open.\n",
 685                         ERROR + RESOURCE_BUSY);
 686                 return;
 687         }
 688
 689         snprintf(pathname, sizeof pathname,
 690                          "%s/%s",
 691                          ctdl_netout_dir,
 692                          CC->net_node);
 693
 694         /* first open the file in append mode in order to create a
 695          * zero-length file if it doesn't already exist
 696          */
 697         CC->download_fp = fopen(pathname, "a");
 698         if (CC->download_fp != NULL)
 699                 fclose(CC->download_fp);
 700
 701         /* now open it */
 702         CC->download_fp = fopen(pathname, "r");
 703         if (CC->download_fp == NULL) {
 704                 cprintf("%d cannot open %s: %s\n",
 705                         ERROR + INTERNAL_ERROR, pathname, strerror(errno));
 706                 return;
 707         }
 708
 709
 710         /* set this flag so other routines know that the download file
 711          * currently open is a network spool file
 712          */
 713         CC->dl_is_net = 1;
 714
 715         stat(pathname, &statbuf);
 716         CC->download_fp_total = statbuf.st_size;
 717         cprintf("%d %ld\n", CIT_OK, (long)statbuf.st_size);
 718 }
 719
 720 /*
 721  * cmd_nuop() - open a network spool file for uploading
 722  */
 723 void cmd_nuop(char *cmdbuf)
 724 {
 725         static int seq = 1;
 726
 727         if (IsEmptyStr(CC->net_node)) {
 728                 cprintf("%d Not authenticated as a network node.\n",
 729                         ERROR + NOT_LOGGED_IN);
 730                 return;
 731         }
 732
 733         if (CC->upload_fp != NULL) {
 734                 cprintf("%d You already have an upload file open.\n",
 735                         ERROR + RESOURCE_BUSY);
 736                 return;
 737         }
 738
 739         snprintf(CC->upl_path, sizeof CC->upl_path,
 740                          "%s/%s.%04lx.%04x",
 741                          ctdl_nettmp_dir,
 742                          CC->net_node,
 743                          (long)getpid(),
 744                          ++seq);
 745
 746         CC->upload_fp = fopen(CC->upl_path, "r");
 747         if (CC->upload_fp != NULL) {
 748                 fclose(CC->upload_fp);
 749                 CC->upload_fp = NULL;
 750                 cprintf("%d '%s' already exists\n",
 751                         ERROR + ALREADY_EXISTS, CC->upl_path);
 752                 return;
 753         }
 754
 755         CC->upload_fp = fopen(CC->upl_path, "w");
 756         if (CC->upload_fp == NULL) {
 757                 cprintf("%d Cannot open %s: %s\n",
 758                         ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
 759                 return;
 760         }
 761
 762         CC->upload_type = UPL_NET;
 763         cprintf("%d Ok\n", CIT_OK);
 764 }
 765
 766
 767 /*****************************************************************************/
 768 /*                      MODULE INITIALIZATION STUFF                          */
 769 /*****************************************************************************/
 770
 771 CTDL_MODULE_INIT(file_ops)
 772 {
 773         if (!threading) {
 774
 775                 CtdlRegisterProtoHook(cmd_delf, "DELF", "Delete a file");
 776                 CtdlRegisterProtoHook(cmd_movf, "MOVF", "Move a file");
 777                 CtdlRegisterProtoHook(cmd_open, "OPEN", "Open a download file transfer");
 778                 CtdlRegisterProtoHook(cmd_clos, "CLOS", "Close a download file transfer");
 779                 CtdlRegisterProtoHook(cmd_uopn, "UOPN", "Open an upload file transfer");
 780                 CtdlRegisterProtoHook(cmd_ucls, "UCLS", "Close an upload file transfer");
 781                 CtdlRegisterProtoHook(cmd_read, "READ", "File transfer read operation");
 782                 CtdlRegisterProtoHook(cmd_writ, "WRIT", "File transfer write operation");
 783                 CtdlRegisterProtoHook(cmd_ndop, "NDOP", "Open a network spool file for download");
 784                 CtdlRegisterProtoHook(cmd_nuop, "NUOP", "Open a network spool file for upload");
 785                 CtdlRegisterProtoHook(cmd_oimg, "OIMG", "Open an image file for download");
 786                 CtdlRegisterProtoHook(cmd_uimg, "UIMG", "Upload an image file");
 787         }
 788         /* return our Subversion id for the Log */
 789         return "file_ops";
 790 }