| 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 int verbose; |
| 25 | extern int am_server; |
| 26 | extern int always_checksum; |
| 27 | extern off_t total_size; |
| 28 | |
| 29 | extern int cvs_exclude; |
| 30 | |
| 31 | extern int one_file_system; |
| 32 | extern int make_backups; |
| 33 | extern int preserve_links; |
| 34 | extern int preserve_perms; |
| 35 | extern int preserve_devices; |
| 36 | extern int preserve_uid; |
| 37 | extern int preserve_gid; |
| 38 | extern int preserve_times; |
| 39 | |
| 40 | static char **local_exclude_list = NULL; |
| 41 | |
| 42 | static void clean_fname(char *name); |
| 43 | |
| 44 | |
| 45 | /* |
| 46 | This function is used to check if a file should be included/excluded |
| 47 | from the list of files based on its name and type etc |
| 48 | */ |
| 49 | static int match_file_name(char *fname,struct stat *st) |
| 50 | { |
| 51 | if (check_exclude(fname,local_exclude_list)) { |
| 52 | if (verbose > 2) |
| 53 | fprintf(stderr,"excluding file %s\n",fname); |
| 54 | return 0; |
| 55 | } |
| 56 | return 1; |
| 57 | } |
| 58 | |
| 59 | /* used by the one_file_system code */ |
| 60 | static dev_t filesystem_dev; |
| 61 | |
| 62 | static void set_filesystem(char *fname) |
| 63 | { |
| 64 | struct stat st; |
| 65 | if (lstat(fname,&st) != 0) return; |
| 66 | filesystem_dev = st.st_dev; |
| 67 | } |
| 68 | |
| 69 | |
| 70 | static void send_directory(int f,struct file_list *flist,char *dir); |
| 71 | |
| 72 | static char *flist_dir = NULL; |
| 73 | |
| 74 | static void send_file_entry(struct file_struct *file,int f) |
| 75 | { |
| 76 | if (f == -1) return; |
| 77 | |
| 78 | write_int(f,strlen(file->name)); |
| 79 | write_buf(f,file->name,strlen(file->name)); |
| 80 | write_int(f,(int)file->modtime); |
| 81 | write_int(f,(int)file->length); |
| 82 | write_int(f,(int)file->mode); |
| 83 | if (preserve_uid) |
| 84 | write_int(f,(int)file->uid); |
| 85 | if (preserve_gid) |
| 86 | write_int(f,(int)file->gid); |
| 87 | if (preserve_devices) { |
| 88 | if (verbose > 2) |
| 89 | fprintf(stderr,"dev=0x%x\n",(int)file->dev); |
| 90 | write_int(f,(int)file->dev); |
| 91 | } |
| 92 | |
| 93 | #if SUPPORT_LINKS |
| 94 | if (preserve_links && S_ISLNK(file->mode)) { |
| 95 | write_int(f,strlen(file->link)); |
| 96 | write_buf(f,file->link,strlen(file->link)); |
| 97 | } |
| 98 | #endif |
| 99 | |
| 100 | if (always_checksum) { |
| 101 | write_buf(f,file->sum,SUM_LENGTH); |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | |
| 106 | static struct file_struct *make_file(int recurse,char *fname) |
| 107 | { |
| 108 | static struct file_struct file; |
| 109 | struct stat st; |
| 110 | char sum[SUM_LENGTH]; |
| 111 | |
| 112 | bzero(sum,SUM_LENGTH); |
| 113 | |
| 114 | if (lstat(fname,&st) != 0) { |
| 115 | fprintf(stderr,"%s: %s\n", |
| 116 | fname,strerror(errno)); |
| 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | if (S_ISDIR(st.st_mode) && !recurse) { |
| 121 | fprintf(stderr,"skipping directory %s\n",fname); |
| 122 | return NULL; |
| 123 | } |
| 124 | |
| 125 | if (one_file_system && st.st_dev != filesystem_dev) |
| 126 | return NULL; |
| 127 | |
| 128 | if (!match_file_name(fname,&st)) |
| 129 | return NULL; |
| 130 | |
| 131 | if (verbose > 2) |
| 132 | fprintf(stderr,"make_file(%s)\n",fname); |
| 133 | |
| 134 | file.name = strdup(fname); |
| 135 | file.modtime = st.st_mtime; |
| 136 | file.length = st.st_size; |
| 137 | file.mode = st.st_mode; |
| 138 | file.uid = st.st_uid; |
| 139 | file.gid = st.st_gid; |
| 140 | #ifdef HAVE_ST_RDEV |
| 141 | file.dev = st.st_rdev; |
| 142 | #endif |
| 143 | |
| 144 | #if SUPPORT_LINKS |
| 145 | if (S_ISLNK(st.st_mode)) { |
| 146 | int l; |
| 147 | char lnk[MAXPATHLEN]; |
| 148 | if ((l=readlink(fname,lnk,MAXPATHLEN-1)) == -1) { |
| 149 | fprintf(stderr,"readlink %s : %s\n",fname,strerror(errno)); |
| 150 | return NULL; |
| 151 | } |
| 152 | lnk[l] = 0; |
| 153 | file.link = strdup(lnk); |
| 154 | } |
| 155 | #endif |
| 156 | |
| 157 | if (always_checksum && S_ISREG(st.st_mode)) { |
| 158 | file_checksum(fname,file.sum,st.st_size); |
| 159 | } |
| 160 | |
| 161 | if (flist_dir) |
| 162 | file.dir = strdup(flist_dir); |
| 163 | else |
| 164 | file.dir = NULL; |
| 165 | |
| 166 | if (!S_ISDIR(st.st_mode)) |
| 167 | total_size += st.st_size; |
| 168 | |
| 169 | return &file; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | |
| 174 | static void send_file_name(int f,struct file_list *flist, |
| 175 | int recurse,char *fname) |
| 176 | { |
| 177 | struct file_struct *file; |
| 178 | |
| 179 | file = make_file(recurse,fname); |
| 180 | |
| 181 | if (!file) return; |
| 182 | |
| 183 | if (flist->count >= flist->malloced) { |
| 184 | flist->malloced += 100; |
| 185 | flist->files = (struct file_struct *)realloc(flist->files, |
| 186 | sizeof(flist->files[0])* |
| 187 | flist->malloced); |
| 188 | if (!flist->files) |
| 189 | out_of_memory("send_file_name"); |
| 190 | } |
| 191 | |
| 192 | if (strcmp(file->name,".") && strcmp(file->name,"/")) { |
| 193 | flist->files[flist->count++] = *file; |
| 194 | send_file_entry(file,f); |
| 195 | } |
| 196 | |
| 197 | if (S_ISDIR(file->mode) && recurse) { |
| 198 | char **last_exclude_list = local_exclude_list; |
| 199 | send_directory(f,flist,file->name); |
| 200 | local_exclude_list = last_exclude_list; |
| 201 | return; |
| 202 | } |
| 203 | } |
| 204 | |
| 205 | |
| 206 | |
| 207 | static void send_directory(int f,struct file_list *flist,char *dir) |
| 208 | { |
| 209 | DIR *d; |
| 210 | struct dirent *di; |
| 211 | char fname[MAXPATHLEN]; |
| 212 | int l; |
| 213 | char *p; |
| 214 | |
| 215 | d = opendir(dir); |
| 216 | if (!d) { |
| 217 | fprintf(stderr,"%s: %s\n", |
| 218 | dir,strerror(errno)); |
| 219 | return; |
| 220 | } |
| 221 | |
| 222 | strcpy(fname,dir); |
| 223 | l = strlen(fname); |
| 224 | if (fname[l-1] != '/') |
| 225 | strcat(fname,"/"); |
| 226 | p = fname + strlen(fname); |
| 227 | |
| 228 | if (cvs_exclude) { |
| 229 | strcpy(p,".cvsignore"); |
| 230 | local_exclude_list = make_exclude_list(fname,NULL,0); |
| 231 | } |
| 232 | |
| 233 | for (di=readdir(d); di; di=readdir(d)) { |
| 234 | if (strcmp(di->d_name,".")==0 || |
| 235 | strcmp(di->d_name,"..")==0) |
| 236 | continue; |
| 237 | strcpy(p,di->d_name); |
| 238 | send_file_name(f,flist,1,fname); |
| 239 | } |
| 240 | |
| 241 | closedir(d); |
| 242 | } |
| 243 | |
| 244 | |
| 245 | |
| 246 | struct file_list *send_file_list(int f,int recurse,int argc,char *argv[]) |
| 247 | { |
| 248 | int i,l; |
| 249 | struct stat st; |
| 250 | char *p,*dir; |
| 251 | char dbuf[MAXPATHLEN]; |
| 252 | struct file_list *flist; |
| 253 | |
| 254 | if (verbose && recurse) { |
| 255 | fprintf(am_server?stderr:stdout,"building file list ... "); |
| 256 | fflush(am_server?stderr:stdout); |
| 257 | } |
| 258 | |
| 259 | flist = (struct file_list *)malloc(sizeof(flist[0])); |
| 260 | if (!flist) out_of_memory("send_file_list"); |
| 261 | |
| 262 | flist->count=0; |
| 263 | flist->malloced = 100; |
| 264 | flist->files = (struct file_struct *)malloc(sizeof(flist->files[0])* |
| 265 | flist->malloced); |
| 266 | if (!flist->files) out_of_memory("send_file_list"); |
| 267 | |
| 268 | for (i=0;i<argc;i++) { |
| 269 | char fname2[MAXPATHLEN]; |
| 270 | char *fname = fname2; |
| 271 | |
| 272 | strcpy(fname,argv[i]); |
| 273 | |
| 274 | l = strlen(fname); |
| 275 | if (l != 1 && fname[l-1] == '/') { |
| 276 | strcat(fname,"."); |
| 277 | } |
| 278 | |
| 279 | if (lstat(fname,&st) != 0) { |
| 280 | fprintf(stderr,"%s : %s\n",fname,strerror(errno)); |
| 281 | continue; |
| 282 | } |
| 283 | |
| 284 | if (S_ISDIR(st.st_mode) && !recurse) { |
| 285 | fprintf(stderr,"skipping directory %s\n",fname); |
| 286 | continue; |
| 287 | } |
| 288 | |
| 289 | dir = NULL; |
| 290 | p = strrchr(fname,'/'); |
| 291 | if (p) { |
| 292 | *p = 0; |
| 293 | dir = fname; |
| 294 | fname = p+1; |
| 295 | } |
| 296 | if (!*fname) |
| 297 | fname = "."; |
| 298 | |
| 299 | if (dir && *dir) { |
| 300 | if (getcwd(dbuf,MAXPATHLEN-1) == NULL) { |
| 301 | fprintf(stderr,"getwd : %s\n",strerror(errno)); |
| 302 | exit(1); |
| 303 | } |
| 304 | if (chdir(dir) != 0) { |
| 305 | fprintf(stderr,"chdir %s : %s\n",dir,strerror(errno)); |
| 306 | continue; |
| 307 | } |
| 308 | flist_dir = dir; |
| 309 | if (one_file_system) |
| 310 | set_filesystem(fname); |
| 311 | send_file_name(f,flist,recurse,fname); |
| 312 | flist_dir = NULL; |
| 313 | if (chdir(dbuf) != 0) { |
| 314 | fprintf(stderr,"chdir %s : %s\n",dbuf,strerror(errno)); |
| 315 | exit(1); |
| 316 | } |
| 317 | continue; |
| 318 | } |
| 319 | |
| 320 | if (one_file_system) |
| 321 | set_filesystem(fname); |
| 322 | send_file_name(f,flist,recurse,fname); |
| 323 | } |
| 324 | |
| 325 | if (f != -1) { |
| 326 | write_int(f,0); |
| 327 | write_flush(f); |
| 328 | } |
| 329 | |
| 330 | clean_flist(flist); |
| 331 | |
| 332 | if (verbose && recurse) |
| 333 | fprintf(am_server?stderr:stdout,"done\n"); |
| 334 | |
| 335 | return flist; |
| 336 | } |
| 337 | |
| 338 | |
| 339 | struct file_list *recv_file_list(int f) |
| 340 | { |
| 341 | int l; |
| 342 | struct file_list *flist; |
| 343 | |
| 344 | if (verbose > 2) |
| 345 | fprintf(stderr,"recv_file_list starting\n"); |
| 346 | |
| 347 | flist = (struct file_list *)malloc(sizeof(flist[0])); |
| 348 | if (!flist) |
| 349 | goto oom; |
| 350 | |
| 351 | flist->count=0; |
| 352 | flist->malloced=100; |
| 353 | flist->files = (struct file_struct *)malloc(sizeof(flist->files[0])* |
| 354 | flist->malloced); |
| 355 | if (!flist->files) |
| 356 | goto oom; |
| 357 | |
| 358 | |
| 359 | for (l=read_int(f); l; l=read_int(f)) { |
| 360 | int i = flist->count; |
| 361 | |
| 362 | if (i >= flist->malloced) { |
| 363 | flist->malloced += 100; |
| 364 | flist->files =(struct file_struct *)realloc(flist->files, |
| 365 | sizeof(flist->files[0])* |
| 366 | flist->malloced); |
| 367 | if (!flist->files) |
| 368 | goto oom; |
| 369 | } |
| 370 | |
| 371 | flist->files[i].name = (char *)malloc(l+1); |
| 372 | if (!flist->files[i].name) |
| 373 | goto oom; |
| 374 | |
| 375 | read_buf(f,flist->files[i].name,l); |
| 376 | flist->files[i].name[l] = 0; |
| 377 | flist->files[i].modtime = (time_t)read_int(f); |
| 378 | flist->files[i].length = (off_t)read_int(f); |
| 379 | flist->files[i].mode = (mode_t)read_int(f); |
| 380 | if (preserve_uid) |
| 381 | flist->files[i].uid = (uid_t)read_int(f); |
| 382 | if (preserve_gid) |
| 383 | flist->files[i].gid = (gid_t)read_int(f); |
| 384 | if (preserve_devices) |
| 385 | flist->files[i].dev = (dev_t)read_int(f); |
| 386 | |
| 387 | #if SUPPORT_LINKS |
| 388 | if (preserve_links && S_ISLNK(flist->files[i].mode)) { |
| 389 | int l = read_int(f); |
| 390 | flist->files[i].link = (char *)malloc(l+1); |
| 391 | read_buf(f,flist->files[i].link,l); |
| 392 | flist->files[i].link[l] = 0; |
| 393 | } |
| 394 | #endif |
| 395 | |
| 396 | if (always_checksum) |
| 397 | read_buf(f,flist->files[i].sum,SUM_LENGTH); |
| 398 | |
| 399 | if (S_ISREG(flist->files[i].mode)) |
| 400 | total_size += flist->files[i].length; |
| 401 | |
| 402 | flist->count++; |
| 403 | |
| 404 | if (verbose > 2) |
| 405 | fprintf(stderr,"recv_file_name(%s)\n",flist->files[i].name); |
| 406 | } |
| 407 | |
| 408 | |
| 409 | if (verbose > 2) |
| 410 | fprintf(stderr,"received %d names\n",flist->count); |
| 411 | |
| 412 | clean_flist(flist); |
| 413 | |
| 414 | return flist; |
| 415 | |
| 416 | oom: |
| 417 | out_of_memory("recv_file_list"); |
| 418 | return NULL; /* not reached */ |
| 419 | } |
| 420 | |
| 421 | |
| 422 | static int flist_compare(struct file_struct *f1,struct file_struct *f2) |
| 423 | { |
| 424 | if (!f1->name && !f2->name) return 0; |
| 425 | if (!f1->name) return -1; |
| 426 | if (!f2->name) return 1; |
| 427 | return strcmp(f1->name,f2->name); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | int flist_find(struct file_list *flist,struct file_struct *f) |
| 432 | { |
| 433 | int low=0,high=flist->count; |
| 434 | |
| 435 | while (low != high) { |
| 436 | int mid = (low+high)/2; |
| 437 | int ret = flist_compare(&flist->files[mid],f); |
| 438 | if (ret == 0) return mid; |
| 439 | if (ret > 0) |
| 440 | high=mid; |
| 441 | else |
| 442 | low=mid+1; |
| 443 | } |
| 444 | if (flist_compare(&flist->files[low],f) == 0) |
| 445 | return low; |
| 446 | return -1; |
| 447 | } |
| 448 | |
| 449 | |
| 450 | static void clean_fname(char *name) |
| 451 | { |
| 452 | char *p; |
| 453 | int l; |
| 454 | int modified = 1; |
| 455 | |
| 456 | if (!name) return; |
| 457 | |
| 458 | while (modified) { |
| 459 | modified = 0; |
| 460 | |
| 461 | if ((p=strstr(name,"/./"))) { |
| 462 | modified = 1; |
| 463 | while (*p) { |
| 464 | p[0] = p[2]; |
| 465 | p++; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | if ((p=strstr(name,"//"))) { |
| 470 | modified = 1; |
| 471 | while (*p) { |
| 472 | p[0] = p[1]; |
| 473 | p++; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | if (strncmp(p=name,"./",2) == 0) { |
| 478 | modified = 1; |
| 479 | while (*p) { |
| 480 | p[0] = p[2]; |
| 481 | p++; |
| 482 | } |
| 483 | } |
| 484 | |
| 485 | l = strlen(p=name); |
| 486 | if (l > 1 && p[l-1] == '/') { |
| 487 | modified = 1; |
| 488 | p[l-1] = 0; |
| 489 | } |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | |
| 494 | /* |
| 495 | * This routine ensures we don't have any duplicate names in our file list. |
| 496 | * duplicate names can cause corruption because of the pipelining |
| 497 | */ |
| 498 | void clean_flist(struct file_list *flist) |
| 499 | { |
| 500 | int i; |
| 501 | |
| 502 | if (!flist || flist->count == 0) |
| 503 | return; |
| 504 | |
| 505 | for (i=0;i<flist->count;i++) { |
| 506 | clean_fname(flist->files[i].name); |
| 507 | } |
| 508 | |
| 509 | qsort(flist->files,flist->count, |
| 510 | sizeof(flist->files[0]), |
| 511 | (int (*)())flist_compare); |
| 512 | |
| 513 | for (i=1;i<flist->count;i++) { |
| 514 | if (flist->files[i].name && |
| 515 | strcmp(flist->files[i].name,flist->files[i-1].name) == 0) { |
| 516 | if (verbose > 1 && !am_server) |
| 517 | fprintf(stderr,"removing duplicate name %s from file list\n", |
| 518 | flist->files[i].name); |
| 519 | free(flist->files[i-1].name); |
| 520 | flist->files[i-1].name = NULL; |
| 521 | } |
| 522 | } |
| 523 | } |
| 524 | |