flist.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1996
   3    Copyright (C) Paul Mackerras 1996
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 /* generate and receive file lists */
  21
  22 #include "rsync.h"
  23
  24 extern struct stats stats;
  25
  26 extern int verbose;
  27 extern int am_server;
  28 extern int always_checksum;
  29
  30 extern int cvs_exclude;
  31
  32 extern int recurse;
  33
  34 extern int one_file_system;
  35 extern int make_backups;
  36 extern int preserve_links;
  37 extern int preserve_hard_links;
  38 extern int preserve_perms;
  39 extern int preserve_devices;
  40 extern int preserve_uid;
  41 extern int preserve_gid;
  42 extern int preserve_times;
  43 extern int relative_paths;
  44 extern int copy_links;
  45 extern int copy_unsafe_links;
  46 extern int remote_version;
  47 extern int io_error;
  48 extern int sanitize_paths;
  49
  50 static char topsrcname[MAXPATHLEN];
  51
  52 static struct exclude_struct **local_exclude_list;
  53
  54 static void clean_flist(struct file_list *flist, int strip_root);
  55
  56
  57 static void list_file_entry(struct file_struct *f)
  58 {
  59         char perms[11] = "----------";
  60         char *perm_map = "rwxrwxrwx";
  61         int i;
  62
  63         if (!f->basename)
  64                 /* this can happen if duplicate names were removed */
  65                 return;
  66
  67         for (i=0;i<9;i++) {
  68                 if (f->mode & (1<<i)) perms[9-i] = perm_map[8-i];
  69         }
  70         if (S_ISLNK(f->mode)) perms[0] = 'l';
  71         if (S_ISDIR(f->mode)) perms[0] = 'd';
  72         if (S_ISBLK(f->mode)) perms[0] = 'b';
  73         if (S_ISCHR(f->mode)) perms[0] = 'c';
  74         if (S_ISSOCK(f->mode)) perms[0] = 's';
  75         if (S_ISFIFO(f->mode)) perms[0] = 'p';
  76
  77         if (preserve_links && S_ISLNK(f->mode)) {
  78                 rprintf(FINFO,"%s %11.0f %s %s -> %s\n",
  79                         perms,
  80                         (double)f->length, timestring(f->modtime),
  81                         f_name(f), f->link);
  82         } else {
  83                 rprintf(FINFO,"%s %11.0f %s %s\n",
  84                         perms,
  85                         (double)f->length, timestring(f->modtime), f_name(f));
  86         }
  87 }
  88
  89
  90 int readlink_stat(const char *Path, STRUCT_STAT *Buffer, char *Linkbuf)
  91 {
  92 #if SUPPORT_LINKS
  93         if (copy_links) {
  94                 return do_stat(Path, Buffer);
  95         }
  96         if (do_lstat(Path, Buffer) == -1) {
  97                 return -1;
  98         }
  99         if (S_ISLNK(Buffer->st_mode)) {
 100                 int l;
 101                 if ((l = readlink(Path,Linkbuf,MAXPATHLEN-1)) == -1) {
 102                         return -1;
 103                 }
 104                 Linkbuf[l] = 0;
 105                 if (copy_unsafe_links && (topsrcname[0] != '\0') &&
 106                                     unsafe_symlink(Linkbuf, topsrcname)) {
 107                         return do_stat(Path, Buffer);
 108                 }
 109         }
 110         return 0;
 111 #else
 112         return do_stat(Path, Buffer);
 113 #endif
 114 }
 115
 116 int link_stat(const char *Path, STRUCT_STAT *Buffer)
 117 {
 118 #if SUPPORT_LINKS
 119     if (copy_links) {
 120         return do_stat(Path, Buffer);
 121     } else {
 122         return do_lstat(Path, Buffer);
 123     }
 124 #else
 125     return do_stat(Path, Buffer);
 126 #endif
 127 }
 128
 129 /*
 130   This function is used to check if a file should be included/excluded
 131   from the list of files based on its name and type etc
 132  */
 133 static int match_file_name(char *fname,STRUCT_STAT *st)
 134 {
 135   if (check_exclude(fname,local_exclude_list,st)) {
 136     if (verbose > 2)
 137       rprintf(FINFO,"excluding file %s\n",fname);
 138     return 0;
 139   }
 140   return 1;
 141 }
 142
 143 /* used by the one_file_system code */
 144 static dev_t filesystem_dev;
 145
 146 static void set_filesystem(char *fname)
 147 {
 148   STRUCT_STAT st;
 149   if (link_stat(fname,&st) != 0) return;
 150   filesystem_dev = st.st_dev;
 151 }
 152
 153
 154 static int to_wire_mode(mode_t mode)
 155 {
 156         if (S_ISLNK(mode) && (S_IFLNK != 0120000)) {
 157                 return (mode & ~(_S_IFMT)) | 0120000;
 158         }
 159         return (int)mode;
 160 }
 161
 162 static mode_t from_wire_mode(int mode)
 163 {
 164         if ((mode & (_S_IFMT)) == 0120000 && (S_IFLNK != 0120000)) {
 165                 return (mode & ~(_S_IFMT)) | S_IFLNK;
 166         }
 167         return (mode_t)mode;
 168 }
 169
 170
 171 static void send_directory(int f,struct file_list *flist,char *dir);
 172
 173 static char *flist_dir;
 174
 175
 176 static void send_file_entry(struct file_struct *file,int f,unsigned base_flags)
 177 {
 178         unsigned char flags;
 179         static time_t last_time;
 180         static mode_t last_mode;
 181         static dev_t last_rdev;
 182         static uid_t last_uid;
 183         static gid_t last_gid;
 184         static char lastname[MAXPATHLEN];
 185         char *fname;
 186         int l1,l2;
 187
 188         if (f == -1) return;
 189
 190         if (!file) {
 191                 write_byte(f,0);
 192                 return;
 193         }
 194
 195         fname = f_name(file);
 196
 197         flags = base_flags;
 198
 199         if (file->mode == last_mode) flags |= SAME_MODE;
 200         if (file->rdev == last_rdev) flags |= SAME_RDEV;
 201         if (file->uid == last_uid) flags |= SAME_UID;
 202         if (file->gid == last_gid) flags |= SAME_GID;
 203         if (file->modtime == last_time) flags |= SAME_TIME;
 204
 205         for (l1=0;lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);l1++) ;
 206         l2 = strlen(fname) - l1;
 207
 208         if (l1 > 0) flags |= SAME_NAME;
 209         if (l2 > 255) flags |= LONG_NAME;
 210
 211         /* we must make sure we don't send a zero flags byte or the other
 212            end will terminate the flist transfer */
 213         if (flags == 0 && !S_ISDIR(file->mode)) flags |= FLAG_DELETE;
 214         if (flags == 0) flags |= LONG_NAME;
 215
 216         write_byte(f,flags);
 217         if (flags & SAME_NAME)
 218                 write_byte(f,l1);
 219         if (flags & LONG_NAME)
 220                 write_int(f,l2);
 221         else
 222                 write_byte(f,l2);
 223         write_buf(f,fname+l1,l2);
 224
 225         write_longint(f,file->length);
 226         if (!(flags & SAME_TIME))
 227                 write_int(f,(int)file->modtime);
 228         if (!(flags & SAME_MODE))
 229                 write_int(f,to_wire_mode(file->mode));
 230         if (preserve_uid && !(flags & SAME_UID)) {
 231                 add_uid(file->uid);
 232                 write_int(f,(int)file->uid);
 233         }
 234         if (preserve_gid && !(flags & SAME_GID)) {
 235                 add_gid(file->gid);
 236                 write_int(f,(int)file->gid);
 237         }
 238         if (preserve_devices && IS_DEVICE(file->mode) && !(flags & SAME_RDEV))
 239                 write_int(f,(int)file->rdev);
 240
 241 #if SUPPORT_LINKS
 242         if (preserve_links && S_ISLNK(file->mode)) {
 243                 write_int(f,strlen(file->link));
 244                 write_buf(f,file->link,strlen(file->link));
 245         }
 246 #endif
 247
 248 #if SUPPORT_HARD_LINKS
 249         if (preserve_hard_links && S_ISREG(file->mode)) {
 250                 write_int(f,(int)file->dev);
 251                 write_int(f,(int)file->inode);
 252         }
 253 #endif
 254
 255         if (always_checksum) {
 256                 if (remote_version < 21) {
 257                         write_buf(f,file->sum,2);
 258                 } else {
 259                         write_buf(f,file->sum,MD4_SUM_LENGTH);
 260                 }
 261         }
 262
 263         last_mode = file->mode;
 264         last_rdev = file->rdev;
 265         last_uid = file->uid;
 266         last_gid = file->gid;
 267         last_time = file->modtime;
 268
 269         strlcpy(lastname,fname,MAXPATHLEN);
 270         lastname[MAXPATHLEN-1] = 0;
 271 }
 272
 273
 274
 275 static void receive_file_entry(struct file_struct **fptr,
 276                                unsigned flags,int f)
 277 {
 278         static time_t last_time;
 279         static mode_t last_mode;
 280         static dev_t last_rdev;
 281         static uid_t last_uid;
 282         static gid_t last_gid;
 283         static char lastname[MAXPATHLEN];
 284         char thisname[MAXPATHLEN];
 285         int l1=0,l2=0;
 286         char *p;
 287         struct file_struct *file;
 288
 289         if (flags & SAME_NAME)
 290                 l1 = read_byte(f);
 291
 292         if (flags & LONG_NAME)
 293                 l2 = read_int(f);
 294         else
 295                 l2 = read_byte(f);
 296
 297         file = (struct file_struct *)malloc(sizeof(*file));
 298         if (!file) out_of_memory("receive_file_entry");
 299         memset((char *)file, 0, sizeof(*file));
 300         (*fptr) = file;
 301
 302         if (l2 >= MAXPATHLEN-l1) {
 303                 rprintf(FERROR,"overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
 304                         flags, l1, l2, lastname);
 305                 overflow("receive_file_entry");
 306         }
 307
 308         strlcpy(thisname,lastname,l1+1);
 309         read_sbuf(f,&thisname[l1],l2);
 310         thisname[l1+l2] = 0;
 311
 312         strlcpy(lastname,thisname,MAXPATHLEN);
 313         lastname[MAXPATHLEN-1] = 0;
 314
 315         clean_fname(thisname);
 316
 317         if (sanitize_paths) {
 318                 sanitize_path(thisname, NULL);
 319         }
 320
 321         if ((p = strrchr(thisname,'/'))) {
 322                 static char *lastdir;
 323                 *p = 0;
 324                 if (lastdir && strcmp(thisname, lastdir)==0) {
 325                         file->dirname = lastdir;
 326                 } else {
 327                         file->dirname = strdup(thisname);
 328                         lastdir = file->dirname;
 329                 }
 330                 file->basename = strdup(p+1);
 331         } else {
 332                 file->dirname = NULL;
 333                 file->basename = strdup(thisname);
 334         }
 335
 336         if (!file->basename) out_of_memory("receive_file_entry 1");
 337
 338
 339         file->flags = flags;
 340         file->length = read_longint(f);
 341         file->modtime = (flags & SAME_TIME) ? last_time : (time_t)read_int(f);
 342         file->mode = (flags & SAME_MODE) ? last_mode : from_wire_mode(read_int(f));
 343         if (preserve_uid)
 344                 file->uid = (flags & SAME_UID) ? last_uid : (uid_t)read_int(f);
 345         if (preserve_gid)
 346                 file->gid = (flags & SAME_GID) ? last_gid : (gid_t)read_int(f);
 347         if (preserve_devices && IS_DEVICE(file->mode))
 348                 file->rdev = (flags & SAME_RDEV) ? last_rdev : (dev_t)read_int(f);
 349
 350         if (preserve_links && S_ISLNK(file->mode)) {
 351                 int l = read_int(f);
 352                 file->link = (char *)malloc(l+1);
 353                 if (!file->link) out_of_memory("receive_file_entry 2");
 354                 read_sbuf(f,file->link,l);
 355                 if (sanitize_paths) {
 356                         sanitize_path(file->link, file->dirname);
 357                 }
 358         }
 359
 360 #if SUPPORT_HARD_LINKS
 361         if (preserve_hard_links && S_ISREG(file->mode)) {
 362                 file->dev = read_int(f);
 363                 file->inode = read_int(f);
 364         }
 365 #endif
 366
 367         if (always_checksum) {
 368                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 369                 if (!file->sum) out_of_memory("md4 sum");
 370                 if (remote_version < 21) {
 371                         read_buf(f,file->sum,2);
 372                 } else {
 373                         read_buf(f,file->sum,MD4_SUM_LENGTH);
 374                 }
 375         }
 376
 377         last_mode = file->mode;
 378         last_rdev = file->rdev;
 379         last_uid = file->uid;
 380         last_gid = file->gid;
 381         last_time = file->modtime;
 382
 383         if (!preserve_perms) {
 384                 extern int orig_umask;
 385                 /* set an appropriate set of permissions based on original
 386                    permissions and umask. This emulates what GNU cp does */
 387                 file->mode &= ~orig_umask;
 388         }
 389 }
 390
 391
 392 /* determine if a file in a different filesstem should be skipped
 393    when one_file_system is set. We bascally only want to include
 394    the mount points - but they can be hard to find! */
 395 static int skip_filesystem(char *fname, STRUCT_STAT *st)
 396 {
 397         STRUCT_STAT st2;
 398         char *p = strrchr(fname, '/');
 399
 400         /* skip all but directories */
 401         if (!S_ISDIR(st->st_mode)) return 1;
 402
 403         /* if its not a subdirectory then allow */
 404         if (!p) return 0;
 405
 406         *p = 0;
 407         if (link_stat(fname, &st2)) {
 408                 *p = '/';
 409                 return 0;
 410         }
 411         *p = '/';
 412
 413         return (st2.st_dev != filesystem_dev);
 414 }
 415
 416 /* create a file_struct for a named file */
 417 struct file_struct *make_file(int f, char *fname)
 418 {
 419         struct file_struct *file;
 420         STRUCT_STAT st;
 421         char sum[SUM_LENGTH];
 422         char *p;
 423         char cleaned_name[MAXPATHLEN];
 424         char linkbuf[MAXPATHLEN];
 425         extern int delete_excluded;
 426
 427         strlcpy(cleaned_name, fname, MAXPATHLEN);
 428         cleaned_name[MAXPATHLEN-1] = 0;
 429         clean_fname(cleaned_name);
 430         if (sanitize_paths) {
 431                 sanitize_path(cleaned_name, NULL);
 432         }
 433         fname = cleaned_name;
 434
 435         memset(sum,0,SUM_LENGTH);
 436
 437         if (readlink_stat(fname,&st,linkbuf) != 0) {
 438                 io_error = 1;
 439                 rprintf(FERROR,"readlink %s: %s\n",
 440                         fname,strerror(errno));
 441                 return NULL;
 442         }
 443
 444         if (S_ISDIR(st.st_mode) && !recurse) {
 445                 rprintf(FINFO,"skipping directory %s\n",fname);
 446                 return NULL;
 447         }
 448
 449         if (one_file_system && st.st_dev != filesystem_dev) {
 450                 if (skip_filesystem(fname, &st))
 451                         return NULL;
 452         }
 453
 454         /* f is set to -1 when calculating deletion file list */
 455         if (((f != -1) || !delete_excluded) && !match_file_name(fname,&st))
 456                 return NULL;
 457
 458         if (verbose > 2)
 459                 rprintf(FINFO,"make_file(%d,%s)\n",f,fname);
 460
 461         file = (struct file_struct *)malloc(sizeof(*file));
 462         if (!file) out_of_memory("make_file");
 463         memset((char *)file,0,sizeof(*file));
 464
 465         if ((p = strrchr(fname,'/'))) {
 466                 static char *lastdir;
 467                 *p = 0;
 468                 if (lastdir && strcmp(fname, lastdir)==0) {
 469                         file->dirname = lastdir;
 470                 } else {
 471                         file->dirname = strdup(fname);
 472                         lastdir = file->dirname;
 473                 }
 474                 file->basename = strdup(p+1);
 475                 *p = '/';
 476         } else {
 477                 file->dirname = NULL;
 478                 file->basename = strdup(fname);
 479         }
 480
 481         file->modtime = st.st_mtime;
 482         file->length = st.st_size;
 483         file->mode = st.st_mode;
 484         file->uid = st.st_uid;
 485         file->gid = st.st_gid;
 486         file->dev = st.st_dev;
 487         file->inode = st.st_ino;
 488 #ifdef HAVE_ST_RDEV
 489         file->rdev = st.st_rdev;
 490 #endif
 491
 492 #if SUPPORT_LINKS
 493         if (S_ISLNK(st.st_mode)) {
 494                 file->link = strdup(linkbuf);
 495         }
 496 #endif
 497
 498         if (always_checksum) {
 499                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 500                 if (!file->sum) out_of_memory("md4 sum");
 501                 /* drat. we have to provide a null checksum for non-regular
 502                    files in order to be compatible with earlier versions
 503                    of rsync */
 504                 if (S_ISREG(st.st_mode)) {
 505                         file_checksum(fname,file->sum,st.st_size);
 506                 } else {
 507                         memset(file->sum, 0, MD4_SUM_LENGTH);
 508                 }
 509         }
 510
 511         if (flist_dir) {
 512                 static char *lastdir;
 513                 if (lastdir && strcmp(lastdir, flist_dir)==0) {
 514                         file->basedir = lastdir;
 515                 } else {
 516                         file->basedir = strdup(flist_dir);
 517                         lastdir = file->basedir;
 518                 }
 519         } else {
 520                 file->basedir = NULL;
 521         }
 522
 523         if (!S_ISDIR(st.st_mode))
 524                 stats.total_size += st.st_size;
 525
 526         return file;
 527 }
 528
 529
 530
 531 void send_file_name(int f,struct file_list *flist,char *fname,
 532                            int recursive, unsigned base_flags)
 533 {
 534   struct file_struct *file;
 535
 536   file = make_file(f,fname);
 537
 538   if (!file) return;
 539
 540   if (flist->count >= flist->malloced) {
 541           if (flist->malloced < 1000)
 542                   flist->malloced += 1000;
 543           else
 544                   flist->malloced *= 2;
 545           flist->files = (struct file_struct **)realloc(flist->files,
 546                                                         sizeof(flist->files[0])*
 547                                                         flist->malloced);
 548           if (!flist->files)
 549                   out_of_memory("send_file_name");
 550   }
 551
 552   if (strcmp(file->basename,"")) {
 553     flist->files[flist->count++] = file;
 554     send_file_entry(file,f,base_flags);
 555   }
 556
 557   if (S_ISDIR(file->mode) && recursive) {
 558           struct exclude_struct **last_exclude_list = local_exclude_list;
 559           send_directory(f,flist,f_name(file));
 560           local_exclude_list = last_exclude_list;
 561           return;
 562   }
 563 }
 564
 565
 566
 567 static void send_directory(int f,struct file_list *flist,char *dir)
 568 {
 569         DIR *d;
 570         struct dirent *di;
 571         char fname[MAXPATHLEN];
 572         int l;
 573         char *p;
 574
 575         d = opendir(dir);
 576         if (!d) {
 577                 io_error = 1;
 578                 rprintf(FERROR,"opendir(%s): %s\n",
 579                         dir,strerror(errno));
 580                 return;
 581         }
 582
 583         strlcpy(fname,dir,MAXPATHLEN);
 584         l = strlen(fname);
 585         if (fname[l-1] != '/') {
 586                 if (l == MAXPATHLEN-1) {
 587                         io_error = 1;
 588                         rprintf(FERROR,"skipping long-named directory %s\n",fname);
 589                         closedir(d);
 590                         return;
 591                 }
 592                 strlcat(fname,"/", MAXPATHLEN);
 593                 l++;
 594         }
 595         p = fname + strlen(fname);
 596
 597         local_exclude_list = NULL;
 598
 599         if (cvs_exclude) {
 600                 if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN-1) {
 601                         strcpy(p,".cvsignore");
 602                         local_exclude_list = make_exclude_list(fname,NULL,0,0);
 603                 } else {
 604                         io_error = 1;
 605                         rprintf(FINFO,"cannot cvs-exclude in long-named directory %s\n",fname);
 606                 }
 607         }
 608
 609         for (di=readdir(d); di; di=readdir(d)) {
 610                 char *dname = d_name(di);
 611                 if (strcmp(dname,".")==0 ||
 612                     strcmp(dname,"..")==0)
 613                         continue;
 614                 strlcpy(p,dname,MAXPATHLEN-l);
 615                 send_file_name(f,flist,fname,recurse,0);
 616         }
 617
 618         if (local_exclude_list) {
 619                 add_exclude_list("!", &local_exclude_list, 0);
 620         }
 621
 622         closedir(d);
 623 }
 624
 625
 626
 627 struct file_list *send_file_list(int f,int argc,char *argv[])
 628 {
 629         int i,l;
 630         STRUCT_STAT st;
 631         char *p,*dir,*olddir;
 632         char lastpath[MAXPATHLEN]="";
 633         struct file_list *flist;
 634         int64 start_write;
 635
 636         if (verbose && recurse && !am_server && f != -1) {
 637                 rprintf(FINFO,"building file list ... ");
 638                 rflush(FINFO);
 639         }
 640
 641         start_write = stats.total_written;
 642
 643         flist = (struct file_list *)malloc(sizeof(flist[0]));
 644         if (!flist) out_of_memory("send_file_list");
 645
 646         flist->count=0;
 647         flist->malloced = 1000;
 648         flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 649                                                      flist->malloced);
 650         if (!flist->files) out_of_memory("send_file_list");
 651
 652         if (f != -1) {
 653                 io_start_buffering(f);
 654         }
 655
 656         for (i=0;i<argc;i++) {
 657                 char *fname = topsrcname;
 658
 659                 strlcpy(fname,argv[i],MAXPATHLEN);
 660
 661                 l = strlen(fname);
 662                 if (l != 1 && fname[l-1] == '/') {
 663                         if ((l == 2) && (fname[0] == '.')) {
 664                                 /*  Turn ./ into just . rather than ./.
 665                                     This was put in to avoid a problem with
 666                                       rsync -aR --delete from ./
 667                                     The send_file_name() below of ./ was
 668                                     mysteriously preventing deletes */
 669                                 fname[1] = 0;
 670                         } else {
 671                                 strlcat(fname,".",MAXPATHLEN);
 672                         }
 673                 }
 674
 675                 if (link_stat(fname,&st) != 0) {
 676                         if (f != -1) {
 677                                 io_error=1;
 678                                 rprintf(FERROR,"link_stat %s : %s\n",fname,strerror(errno));
 679                         }
 680                         continue;
 681                 }
 682
 683                 if (S_ISDIR(st.st_mode) && !recurse) {
 684                         rprintf(FINFO,"skipping directory %s\n",fname);
 685                         continue;
 686                 }
 687
 688                 dir = NULL;
 689                 olddir = NULL;
 690
 691                 if (!relative_paths) {
 692                         p = strrchr(fname,'/');
 693                         if (p) {
 694                                 *p = 0;
 695                                 if (p == fname)
 696                                         dir = "/";
 697                                 else
 698                                         dir = fname;
 699                                 fname = p+1;
 700                         }
 701                 } else if (f != -1 && (p=strrchr(fname,'/'))) {
 702                         /* this ensures we send the intermediate directories,
 703                            thus getting their permissions right */
 704                         *p = 0;
 705                         if (strcmp(lastpath,fname)) {
 706                                 strlcpy(lastpath, fname, sizeof(lastpath));
 707                                 *p = '/';
 708                                 for (p=fname+1; (p=strchr(p,'/')); p++) {
 709                                         int copy_links_saved = copy_links;
 710                                         int recurse_saved = recurse;
 711                                         *p = 0;
 712                                         copy_links = copy_unsafe_links;
 713                                         /* set recurse to 1 to prevent make_file
 714                                            from ignoring directory, but still
 715                                            turn off the recursive parameter to
 716                                            send_file_name */
 717                                         recurse = 1;
 718                                         send_file_name(f, flist, fname, 0, 0);
 719                                         copy_links = copy_links_saved;
 720                                         recurse = recurse_saved;
 721                                         *p = '/';
 722                                 }
 723                         } else {
 724                                 *p = '/';
 725                         }
 726                 }
 727
 728                 if (!*fname)
 729                         fname = ".";
 730
 731                 if (dir && *dir) {
 732                         olddir = push_dir(dir, 1);
 733
 734                         if (!olddir) {
 735                                 io_error=1;
 736                                 rprintf(FERROR,"push_dir %s : %s\n",
 737                                         dir,strerror(errno));
 738                                 continue;
 739                         }
 740
 741                         flist_dir = dir;
 742                 }
 743
 744                 if (one_file_system)
 745                         set_filesystem(fname);
 746
 747                 send_file_name(f,flist,fname,recurse,FLAG_DELETE);
 748
 749                 if (olddir != NULL) {
 750                         flist_dir = NULL;
 751                         if (pop_dir(olddir) != 0) {
 752                                 rprintf(FERROR,"pop_dir %s : %s\n",
 753                                         dir,strerror(errno));
 754                                 exit_cleanup(RERR_FILESELECT);
 755                         }
 756                 }
 757         }
 758
 759         topsrcname[0] = '\0';
 760
 761         if (f != -1) {
 762                 send_file_entry(NULL,f,0);
 763         }
 764
 765         if (verbose && recurse && !am_server && f != -1)
 766                 rprintf(FINFO,"done\n");
 767
 768         clean_flist(flist, 0);
 769
 770         /* now send the uid/gid list. This was introduced in protocol
 771            version 15 */
 772         if (f != -1 && remote_version >= 15) {
 773                 send_uid_list(f);
 774         }
 775
 776         /* if protocol version is >= 17 then send the io_error flag */
 777         if (f != -1 && remote_version >= 17) {
 778                 extern int module_id;
 779                 write_int(f, lp_ignore_errors(module_id)? 0 : io_error);
 780         }
 781
 782         if (f != -1) {
 783                 io_end_buffering(f);
 784                 stats.flist_size = stats.total_written - start_write;
 785                 stats.num_files = flist->count;
 786         }
 787
 788         if (verbose > 2)
 789                 rprintf(FINFO,"send_file_list done\n");
 790
 791         return flist;
 792 }
 793
 794
 795 struct file_list *recv_file_list(int f)
 796 {
 797   struct file_list *flist;
 798   unsigned char flags;
 799   int64 start_read;
 800   extern int list_only;
 801
 802   if (verbose && recurse && !am_server) {
 803     rprintf(FINFO,"receiving file list ... ");
 804     rflush(FINFO);
 805   }
 806
 807   start_read = stats.total_read;
 808
 809   flist = (struct file_list *)malloc(sizeof(flist[0]));
 810   if (!flist)
 811     goto oom;
 812
 813   flist->count=0;
 814   flist->malloced=1000;
 815   flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 816                                                flist->malloced);
 817   if (!flist->files)
 818     goto oom;
 819
 820
 821   for (flags=read_byte(f); flags; flags=read_byte(f)) {
 822     int i = flist->count;
 823
 824     if (i >= flist->malloced) {
 825           if (flist->malloced < 1000)
 826                   flist->malloced += 1000;
 827           else
 828                   flist->malloced *= 2;
 829           flist->files =(struct file_struct **)realloc(flist->files,
 830                                                        sizeof(flist->files[0])*
 831                                                        flist->malloced);
 832           if (!flist->files)
 833                   goto oom;
 834     }
 835
 836     receive_file_entry(&flist->files[i],flags,f);
 837
 838     if (S_ISREG(flist->files[i]->mode))
 839             stats.total_size += flist->files[i]->length;
 840
 841     flist->count++;
 842
 843     if (verbose > 2)
 844       rprintf(FINFO,"recv_file_name(%s)\n",f_name(flist->files[i]));
 845   }
 846
 847
 848   if (verbose > 2)
 849     rprintf(FINFO,"received %d names\n",flist->count);
 850
 851   clean_flist(flist, relative_paths);
 852
 853   if (verbose && recurse && !am_server) {
 854     rprintf(FINFO,"done\n");
 855   }
 856
 857   /* now recv the uid/gid list. This was introduced in protocol version 15 */
 858   if (f != -1 && remote_version >= 15) {
 859           recv_uid_list(f, flist);
 860   }
 861
 862   /* if protocol version is >= 17 then recv the io_error flag */
 863   if (f != -1 && remote_version >= 17) {
 864           extern int module_id;
 865           if (lp_ignore_errors(module_id)) {
 866                   read_int(f);
 867           } else {
 868                   io_error |= read_int(f);
 869           }
 870   }
 871
 872   if (list_only) {
 873           int i;
 874           for (i=0;i<flist->count;i++) {
 875                   list_file_entry(flist->files[i]);
 876           }
 877   }
 878
 879
 880   if (verbose > 2)
 881     rprintf(FINFO,"recv_file_list done\n");
 882
 883   stats.flist_size = stats.total_read - start_read;
 884   stats.num_files = flist->count;
 885
 886   return flist;
 887
 888 oom:
 889     out_of_memory("recv_file_list");
 890     return NULL; /* not reached */
 891 }
 892
 893
 894 int file_compare(struct file_struct **f1,struct file_struct **f2)
 895 {
 896         if (!(*f1)->basename && !(*f2)->basename) return 0;
 897         if (!(*f1)->basename) return -1;
 898         if (!(*f2)->basename) return 1;
 899         if ((*f1)->dirname == (*f2)->dirname)
 900                 return u_strcmp((*f1)->basename, (*f2)->basename);
 901         return u_strcmp(f_name(*f1),f_name(*f2));
 902 }
 903
 904
 905 int flist_find(struct file_list *flist,struct file_struct *f)
 906 {
 907         int low=0,high=flist->count-1;
 908
 909         if (flist->count <= 0) return -1;
 910
 911         while (low != high) {
 912                 int mid = (low+high)/2;
 913                 int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
 914                 if (ret == 0) return flist_up(flist, mid);
 915                 if (ret > 0) {
 916                         high=mid;
 917                 } else {
 918                         low=mid+1;
 919                 }
 920         }
 921
 922         if (file_compare(&flist->files[flist_up(flist,low)],&f) == 0)
 923                 return flist_up(flist,low);
 924         return -1;
 925 }
 926
 927
 928 /*
 929  * free up one file
 930  */
 931 void free_file(struct file_struct *file)
 932 {
 933         if (!file) return;
 934         if (file->basename) free(file->basename);
 935         if (file->link) free(file->link);
 936         if (file->sum) free(file->sum);
 937         memset((char *)file, 0, sizeof(*file));
 938 }
 939
 940
 941 /*
 942  * free up all elements in a flist
 943  */
 944 void flist_free(struct file_list *flist)
 945 {
 946         int i;
 947         for (i=1;i<flist->count;i++) {
 948                 free_file(flist->files[i]);
 949                 free(flist->files[i]);
 950         }
 951         memset((char *)flist->files, 0, sizeof(flist->files[0])*flist->count);
 952         free(flist->files);
 953         memset((char *)flist, 0, sizeof(*flist));
 954         free(flist);
 955 }
 956
 957
 958 /*
 959  * This routine ensures we don't have any duplicate names in our file list.
 960  * duplicate names can cause corruption because of the pipelining
 961  */
 962 static void clean_flist(struct file_list *flist, int strip_root)
 963 {
 964         int i;
 965
 966         if (!flist || flist->count == 0)
 967                 return;
 968
 969         qsort(flist->files,flist->count,
 970               sizeof(flist->files[0]),
 971               (int (*)())file_compare);
 972
 973         for (i=1;i<flist->count;i++) {
 974                 if (flist->files[i]->basename &&
 975                     flist->files[i-1]->basename &&
 976                     strcmp(f_name(flist->files[i]),
 977                            f_name(flist->files[i-1])) == 0) {
 978                         if (verbose > 1 && !am_server)
 979                                 rprintf(FINFO,"removing duplicate name %s from file list %d\n",
 980                                         f_name(flist->files[i-1]),i-1);
 981                         free_file(flist->files[i]);
 982                 }
 983         }
 984
 985         if (strip_root) {
 986                 /* we need to strip off the root directory in the case
 987                    of relative paths, but this must be done _after_
 988                    the sorting phase */
 989                 for (i=0;i<flist->count;i++) {
 990                         if (flist->files[i]->dirname &&
 991                             flist->files[i]->dirname[0] == '/') {
 992                                 memmove(&flist->files[i]->dirname[0],
 993                                         &flist->files[i]->dirname[1],
 994                                         strlen(flist->files[i]->dirname));
 995                         }
 996
 997                         if (flist->files[i]->dirname &&
 998                             !flist->files[i]->dirname[0]) {
 999                                 flist->files[i]->dirname = NULL;
1000                         }
1001                 }
1002         }
1003
1004
1005         if (verbose <= 3) return;
1006
1007         for (i=0;i<flist->count;i++) {
1008                 rprintf(FINFO,"[%d] i=%d %s %s mode=0%o len=%.0f\n",
1009                         getpid(), i,
1010                         NS(flist->files[i]->dirname),
1011                         NS(flist->files[i]->basename),
1012                         flist->files[i]->mode,
1013                         (double)flist->files[i]->length);
1014         }
1015 }
1016
1017
1018 /*
1019  * return the full filename of a flist entry
1020  */
1021 char *f_name(struct file_struct *f)
1022 {
1023         static char names[10][MAXPATHLEN];
1024         static int n;
1025         char *p = names[n];
1026
1027         if (!f || !f->basename) return NULL;
1028
1029         n = (n+1)%10;
1030
1031         if (f->dirname) {
1032                 strlcpy(p, f->dirname, MAXPATHLEN);
1033                 strlcat(p, "/", MAXPATHLEN);
1034                 strlcat(p, f->basename, MAXPATHLEN);
1035         } else {
1036                 strlcpy(p, f->basename, MAXPATHLEN);
1037         }
1038
1039         return p;
1040 }
1041