Annotation of embedaddon/rsync/exclude.c, revision 1.1
1.1 ! misho 1: /*
! 2: * The filter include/exclude routines.
! 3: *
! 4: * Copyright (C) 1996-2001 Andrew Tridgell <tridge@samba.org>
! 5: * Copyright (C) 1996 Paul Mackerras
! 6: * Copyright (C) 2002 Martin Pool
! 7: * Copyright (C) 2003-2009 Wayne Davison
! 8: *
! 9: * This program is free software; you can redistribute it and/or modify
! 10: * it under the terms of the GNU General Public License as published by
! 11: * the Free Software Foundation; either version 3 of the License, or
! 12: * (at your option) any later version.
! 13: *
! 14: * This program is distributed in the hope that it will be useful,
! 15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
! 16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! 17: * GNU General Public License for more details.
! 18: *
! 19: * You should have received a copy of the GNU General Public License along
! 20: * with this program; if not, visit the http://fsf.org website.
! 21: */
! 22:
! 23: #include "rsync.h"
! 24:
! 25: extern int verbose;
! 26: extern int am_server;
! 27: extern int am_sender;
! 28: extern int eol_nulls;
! 29: extern int io_error;
! 30: extern int local_server;
! 31: extern int prune_empty_dirs;
! 32: extern int ignore_perishable;
! 33: extern int delete_mode;
! 34: extern int delete_excluded;
! 35: extern int cvs_exclude;
! 36: extern int sanitize_paths;
! 37: extern int protocol_version;
! 38: extern int module_id;
! 39:
! 40: extern char curr_dir[MAXPATHLEN];
! 41: extern unsigned int curr_dir_len;
! 42: extern unsigned int module_dirlen;
! 43:
! 44: struct filter_list_struct filter_list = { 0, 0, "" };
! 45: struct filter_list_struct cvs_filter_list = { 0, 0, " [global CVS]" };
! 46: struct filter_list_struct daemon_filter_list = { 0, 0, " [daemon]" };
! 47:
! 48: /* Need room enough for ":MODS " prefix plus some room to grow. */
! 49: #define MAX_RULE_PREFIX (16)
! 50:
! 51: #define MODIFIERS_MERGE_FILE "-+Cenw"
! 52: #define MODIFIERS_INCL_EXCL "/!Crsp"
! 53: #define MODIFIERS_HIDE_PROTECT "/!p"
! 54:
! 55: #define SLASH_WILD3_SUFFIX "/***"
! 56:
! 57: /* The dirbuf is set by push_local_filters() to the current subdirectory
! 58: * relative to curr_dir that is being processed. The path always has a
! 59: * trailing slash appended, and the variable dirbuf_len contains the length
! 60: * of this path prefix. The path is always absolute. */
! 61: static char dirbuf[MAXPATHLEN+1];
! 62: static unsigned int dirbuf_len = 0;
! 63: static int dirbuf_depth;
! 64:
! 65: /* This is True when we're scanning parent dirs for per-dir merge-files. */
! 66: static BOOL parent_dirscan = False;
! 67:
! 68: /* This array contains a list of all the currently active per-dir merge
! 69: * files. This makes it easier to save the appropriate values when we
! 70: * "push" down into each subdirectory. */
! 71: static struct filter_struct **mergelist_parents;
! 72: static int mergelist_cnt = 0;
! 73: static int mergelist_size = 0;
! 74:
! 75: /* Each filter_list_struct describes a singly-linked list by keeping track
! 76: * of both the head and tail pointers. The list is slightly unusual in that
! 77: * a parent-dir's content can be appended to the end of the local list in a
! 78: * special way: the last item in the local list has its "next" pointer set
! 79: * to point to the inherited list, but the local list's tail pointer points
! 80: * at the end of the local list. Thus, if the local list is empty, the head
! 81: * will be pointing at the inherited content but the tail will be NULL. To
! 82: * help you visualize this, here are the possible list arrangements:
! 83: *
! 84: * Completely Empty Local Content Only
! 85: * ================================== ====================================
! 86: * head -> NULL head -> Local1 -> Local2 -> NULL
! 87: * tail -> NULL tail -------------^
! 88: *
! 89: * Inherited Content Only Both Local and Inherited Content
! 90: * ================================== ====================================
! 91: * head -> Parent1 -> Parent2 -> NULL head -> L1 -> L2 -> P1 -> P2 -> NULL
! 92: * tail -> NULL tail ---------^
! 93: *
! 94: * This means that anyone wanting to traverse the whole list to use it just
! 95: * needs to start at the head and use the "next" pointers until it goes
! 96: * NULL. To add new local content, we insert the item after the tail item
! 97: * and update the tail (obviously, if "tail" was NULL, we insert it at the
! 98: * head). To clear the local list, WE MUST NOT FREE THE INHERITED CONTENT
! 99: * because it is shared between the current list and our parent list(s).
! 100: * The easiest way to handle this is to simply truncate the list after the
! 101: * tail item and then free the local list from the head. When inheriting
! 102: * the list for a new local dir, we just save off the filter_list_struct
! 103: * values (so we can pop back to them later) and set the tail to NULL.
! 104: */
! 105:
! 106: static void free_filter(struct filter_struct *ex)
! 107: {
! 108: if (ex->match_flags & MATCHFLG_PERDIR_MERGE) {
! 109: free(ex->u.mergelist->debug_type);
! 110: free(ex->u.mergelist);
! 111: mergelist_cnt--;
! 112: }
! 113: free(ex->pattern);
! 114: free(ex);
! 115: }
! 116:
! 117: /* Build a filter structure given a filter pattern. The value in "pat"
! 118: * is not null-terminated. */
! 119: static void add_rule(struct filter_list_struct *listp, const char *pat,
! 120: unsigned int pat_len, uint32 mflags, int xflags)
! 121: {
! 122: struct filter_struct *ret;
! 123: const char *cp;
! 124: unsigned int pre_len, suf_len, slash_cnt = 0;
! 125:
! 126: if (verbose > 2) {
! 127: rprintf(FINFO, "[%s] add_rule(%s%.*s%s)%s\n",
! 128: who_am_i(), get_rule_prefix(mflags, pat, 0, NULL),
! 129: (int)pat_len, pat,
! 130: (mflags & MATCHFLG_DIRECTORY) ? "/" : "",
! 131: listp->debug_type);
! 132: }
! 133:
! 134: /* These flags also indicate that we're reading a list that
! 135: * needs to be filtered now, not post-filtered later. */
! 136: if (xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH)) {
! 137: uint32 mf = mflags & (MATCHFLG_RECEIVER_SIDE|MATCHFLG_SENDER_SIDE);
! 138: if (am_sender) {
! 139: if (mf == MATCHFLG_RECEIVER_SIDE)
! 140: return;
! 141: } else {
! 142: if (mf == MATCHFLG_SENDER_SIDE)
! 143: return;
! 144: }
! 145: }
! 146:
! 147: if (!(ret = new0(struct filter_struct)))
! 148: out_of_memory("add_rule");
! 149:
! 150: if (pat_len > 1 && pat[pat_len-1] == '/') {
! 151: pat_len--;
! 152: mflags |= MATCHFLG_DIRECTORY;
! 153: }
! 154:
! 155: for (cp = pat; cp < pat + pat_len; cp++) {
! 156: if (*cp == '/')
! 157: slash_cnt++;
! 158: }
! 159:
! 160: if (!(mflags & (MATCHFLG_ABS_PATH | MATCHFLG_MERGE_FILE))
! 161: && ((xflags & (XFLG_ANCHORED2ABS|XFLG_ABS_IF_SLASH) && *pat == '/')
! 162: || (xflags & XFLG_ABS_IF_SLASH && slash_cnt))) {
! 163: mflags |= MATCHFLG_ABS_PATH;
! 164: if (*pat == '/')
! 165: pre_len = dirbuf_len - module_dirlen - 1;
! 166: else
! 167: pre_len = 0;
! 168: } else
! 169: pre_len = 0;
! 170:
! 171: /* The daemon wants dir-exclude rules to get an appended "/" + "***". */
! 172: if (xflags & XFLG_DIR2WILD3
! 173: && BITS_SETnUNSET(mflags, MATCHFLG_DIRECTORY, MATCHFLG_INCLUDE)) {
! 174: mflags &= ~MATCHFLG_DIRECTORY;
! 175: suf_len = sizeof SLASH_WILD3_SUFFIX - 1;
! 176: } else
! 177: suf_len = 0;
! 178:
! 179: if (!(ret->pattern = new_array(char, pre_len + pat_len + suf_len + 1)))
! 180: out_of_memory("add_rule");
! 181: if (pre_len) {
! 182: memcpy(ret->pattern, dirbuf + module_dirlen, pre_len);
! 183: for (cp = ret->pattern; cp < ret->pattern + pre_len; cp++) {
! 184: if (*cp == '/')
! 185: slash_cnt++;
! 186: }
! 187: }
! 188: strlcpy(ret->pattern + pre_len, pat, pat_len + 1);
! 189: pat_len += pre_len;
! 190: if (suf_len) {
! 191: memcpy(ret->pattern + pat_len, SLASH_WILD3_SUFFIX, suf_len+1);
! 192: pat_len += suf_len;
! 193: slash_cnt++;
! 194: }
! 195:
! 196: if (strpbrk(ret->pattern, "*[?")) {
! 197: mflags |= MATCHFLG_WILD;
! 198: if ((cp = strstr(ret->pattern, "**")) != NULL) {
! 199: mflags |= MATCHFLG_WILD2;
! 200: /* If the pattern starts with **, note that. */
! 201: if (cp == ret->pattern)
! 202: mflags |= MATCHFLG_WILD2_PREFIX;
! 203: /* If the pattern ends with ***, note that. */
! 204: if (pat_len >= 3
! 205: && ret->pattern[pat_len-3] == '*'
! 206: && ret->pattern[pat_len-2] == '*'
! 207: && ret->pattern[pat_len-1] == '*')
! 208: mflags |= MATCHFLG_WILD3_SUFFIX;
! 209: }
! 210: }
! 211:
! 212: if (mflags & MATCHFLG_PERDIR_MERGE) {
! 213: struct filter_list_struct *lp;
! 214: unsigned int len;
! 215: int i;
! 216:
! 217: if ((cp = strrchr(ret->pattern, '/')) != NULL)
! 218: cp++;
! 219: else
! 220: cp = ret->pattern;
! 221:
! 222: /* If the local merge file was already mentioned, don't
! 223: * add it again. */
! 224: for (i = 0; i < mergelist_cnt; i++) {
! 225: struct filter_struct *ex = mergelist_parents[i];
! 226: const char *s = strrchr(ex->pattern, '/');
! 227: if (s)
! 228: s++;
! 229: else
! 230: s = ex->pattern;
! 231: len = strlen(s);
! 232: if (len == pat_len - (cp - ret->pattern)
! 233: && memcmp(s, cp, len) == 0) {
! 234: free_filter(ret);
! 235: return;
! 236: }
! 237: }
! 238:
! 239: if (!(lp = new_array(struct filter_list_struct, 1)))
! 240: out_of_memory("add_rule");
! 241: lp->head = lp->tail = NULL;
! 242: if (asprintf(&lp->debug_type, " [per-dir %s]", cp) < 0)
! 243: out_of_memory("add_rule");
! 244: ret->u.mergelist = lp;
! 245:
! 246: if (mergelist_cnt == mergelist_size) {
! 247: mergelist_size += 5;
! 248: mergelist_parents = realloc_array(mergelist_parents,
! 249: struct filter_struct *,
! 250: mergelist_size);
! 251: if (!mergelist_parents)
! 252: out_of_memory("add_rule");
! 253: }
! 254: mergelist_parents[mergelist_cnt++] = ret;
! 255: } else
! 256: ret->u.slash_cnt = slash_cnt;
! 257:
! 258: ret->match_flags = mflags;
! 259:
! 260: if (!listp->tail) {
! 261: ret->next = listp->head;
! 262: listp->head = listp->tail = ret;
! 263: } else {
! 264: ret->next = listp->tail->next;
! 265: listp->tail->next = ret;
! 266: listp->tail = ret;
! 267: }
! 268: }
! 269:
! 270: static void clear_filter_list(struct filter_list_struct *listp)
! 271: {
! 272: if (listp->tail) {
! 273: struct filter_struct *ent, *next;
! 274: /* Truncate any inherited items from the local list. */
! 275: listp->tail->next = NULL;
! 276: /* Now free everything that is left. */
! 277: for (ent = listp->head; ent; ent = next) {
! 278: next = ent->next;
! 279: free_filter(ent);
! 280: }
! 281: }
! 282:
! 283: listp->head = listp->tail = NULL;
! 284: }
! 285:
! 286: /* This returns an expanded (absolute) filename for the merge-file name if
! 287: * the name has any slashes in it OR if the parent_dirscan var is True;
! 288: * otherwise it returns the original merge_file name. If the len_ptr value
! 289: * is non-NULL the merge_file name is limited by the referenced length
! 290: * value and will be updated with the length of the resulting name. We
! 291: * always return a name that is null terminated, even if the merge_file
! 292: * name was not. */
! 293: static char *parse_merge_name(const char *merge_file, unsigned int *len_ptr,
! 294: unsigned int prefix_skip)
! 295: {
! 296: static char buf[MAXPATHLEN];
! 297: char *fn, tmpbuf[MAXPATHLEN];
! 298: unsigned int fn_len;
! 299:
! 300: if (!parent_dirscan && *merge_file != '/') {
! 301: /* Return the name unchanged it doesn't have any slashes. */
! 302: if (len_ptr) {
! 303: const char *p = merge_file + *len_ptr;
! 304: while (--p > merge_file && *p != '/') {}
! 305: if (p == merge_file) {
! 306: strlcpy(buf, merge_file, *len_ptr + 1);
! 307: return buf;
! 308: }
! 309: } else if (strchr(merge_file, '/') == NULL)
! 310: return (char *)merge_file;
! 311: }
! 312:
! 313: fn = *merge_file == '/' ? buf : tmpbuf;
! 314: if (sanitize_paths) {
! 315: const char *r = prefix_skip ? "/" : NULL;
! 316: /* null-terminate the name if it isn't already */
! 317: if (len_ptr && merge_file[*len_ptr]) {
! 318: char *to = fn == buf ? tmpbuf : buf;
! 319: strlcpy(to, merge_file, *len_ptr + 1);
! 320: merge_file = to;
! 321: }
! 322: if (!sanitize_path(fn, merge_file, r, dirbuf_depth, SP_DEFAULT)) {
! 323: rprintf(FERROR, "merge-file name overflows: %s\n",
! 324: merge_file);
! 325: return NULL;
! 326: }
! 327: fn_len = strlen(fn);
! 328: } else {
! 329: strlcpy(fn, merge_file, len_ptr ? *len_ptr + 1 : MAXPATHLEN);
! 330: fn_len = clean_fname(fn, CFN_COLLAPSE_DOT_DOT_DIRS);
! 331: }
! 332:
! 333: /* If the name isn't in buf yet, it's wasn't absolute. */
! 334: if (fn != buf) {
! 335: int d_len = dirbuf_len - prefix_skip;
! 336: if (d_len + fn_len >= MAXPATHLEN) {
! 337: rprintf(FERROR, "merge-file name overflows: %s\n", fn);
! 338: return NULL;
! 339: }
! 340: memcpy(buf, dirbuf + prefix_skip, d_len);
! 341: memcpy(buf + d_len, fn, fn_len + 1);
! 342: fn_len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
! 343: }
! 344:
! 345: if (len_ptr)
! 346: *len_ptr = fn_len;
! 347: return buf;
! 348: }
! 349:
! 350: /* Sets the dirbuf and dirbuf_len values. */
! 351: void set_filter_dir(const char *dir, unsigned int dirlen)
! 352: {
! 353: unsigned int len;
! 354: if (*dir != '/') {
! 355: memcpy(dirbuf, curr_dir, curr_dir_len);
! 356: dirbuf[curr_dir_len] = '/';
! 357: len = curr_dir_len + 1;
! 358: if (len + dirlen >= MAXPATHLEN)
! 359: dirlen = 0;
! 360: } else
! 361: len = 0;
! 362: memcpy(dirbuf + len, dir, dirlen);
! 363: dirbuf[dirlen + len] = '\0';
! 364: dirbuf_len = clean_fname(dirbuf, CFN_COLLAPSE_DOT_DOT_DIRS);
! 365: if (dirbuf_len > 1 && dirbuf[dirbuf_len-1] == '.'
! 366: && dirbuf[dirbuf_len-2] == '/')
! 367: dirbuf_len -= 2;
! 368: if (dirbuf_len != 1)
! 369: dirbuf[dirbuf_len++] = '/';
! 370: dirbuf[dirbuf_len] = '\0';
! 371: if (sanitize_paths)
! 372: dirbuf_depth = count_dir_elements(dirbuf + module_dirlen);
! 373: }
! 374:
! 375: /* This routine takes a per-dir merge-file entry and finishes its setup.
! 376: * If the name has a path portion then we check to see if it refers to a
! 377: * parent directory of the first transfer dir. If it does, we scan all the
! 378: * dirs from that point through the parent dir of the transfer dir looking
! 379: * for the per-dir merge-file in each one. */
! 380: static BOOL setup_merge_file(struct filter_struct *ex,
! 381: struct filter_list_struct *lp)
! 382: {
! 383: char buf[MAXPATHLEN];
! 384: char *x, *y, *pat = ex->pattern;
! 385: unsigned int len;
! 386:
! 387: if (!(x = parse_merge_name(pat, NULL, 0)) || *x != '/')
! 388: return 0;
! 389:
! 390: y = strrchr(x, '/');
! 391: *y = '\0';
! 392: ex->pattern = strdup(y+1);
! 393: if (!*x)
! 394: x = "/";
! 395: if (*x == '/')
! 396: strlcpy(buf, x, MAXPATHLEN);
! 397: else
! 398: pathjoin(buf, MAXPATHLEN, dirbuf, x);
! 399:
! 400: len = clean_fname(buf, CFN_COLLAPSE_DOT_DOT_DIRS);
! 401: if (len != 1 && len < MAXPATHLEN-1) {
! 402: buf[len++] = '/';
! 403: buf[len] = '\0';
! 404: }
! 405: /* This ensures that the specified dir is a parent of the transfer. */
! 406: for (x = buf, y = dirbuf; *x && *x == *y; x++, y++) {}
! 407: if (*x)
! 408: y += strlen(y); /* nope -- skip the scan */
! 409:
! 410: parent_dirscan = True;
! 411: while (*y) {
! 412: char save[MAXPATHLEN];
! 413: strlcpy(save, y, MAXPATHLEN);
! 414: *y = '\0';
! 415: dirbuf_len = y - dirbuf;
! 416: strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
! 417: parse_filter_file(lp, buf, ex->match_flags, XFLG_ANCHORED2ABS);
! 418: if (ex->match_flags & MATCHFLG_NO_INHERIT)
! 419: lp->head = NULL;
! 420: lp->tail = NULL;
! 421: strlcpy(y, save, MAXPATHLEN);
! 422: while ((*x++ = *y++) != '/') {}
! 423: }
! 424: parent_dirscan = False;
! 425: free(pat);
! 426: return 1;
! 427: }
! 428:
! 429: /* Each time rsync changes to a new directory it call this function to
! 430: * handle all the per-dir merge-files. The "dir" value is the current path
! 431: * relative to curr_dir (which might not be null-terminated). We copy it
! 432: * into dirbuf so that we can easily append a file name on the end. */
! 433: void *push_local_filters(const char *dir, unsigned int dirlen)
! 434: {
! 435: struct filter_list_struct *ap, *push;
! 436: int i;
! 437:
! 438: set_filter_dir(dir, dirlen);
! 439:
! 440: if (!mergelist_cnt)
! 441: return NULL;
! 442:
! 443: push = new_array(struct filter_list_struct, mergelist_cnt);
! 444: if (!push)
! 445: out_of_memory("push_local_filters");
! 446:
! 447: for (i = 0, ap = push; i < mergelist_cnt; i++) {
! 448: memcpy(ap++, mergelist_parents[i]->u.mergelist,
! 449: sizeof (struct filter_list_struct));
! 450: }
! 451:
! 452: /* Note: parse_filter_file() might increase mergelist_cnt, so keep
! 453: * this loop separate from the above loop. */
! 454: for (i = 0; i < mergelist_cnt; i++) {
! 455: struct filter_struct *ex = mergelist_parents[i];
! 456: struct filter_list_struct *lp = ex->u.mergelist;
! 457:
! 458: if (verbose > 2) {
! 459: rprintf(FINFO, "[%s] pushing filter list%s\n",
! 460: who_am_i(), lp->debug_type);
! 461: }
! 462:
! 463: lp->tail = NULL; /* Switch any local rules to inherited. */
! 464: if (ex->match_flags & MATCHFLG_NO_INHERIT)
! 465: lp->head = NULL;
! 466:
! 467: if (ex->match_flags & MATCHFLG_FINISH_SETUP) {
! 468: ex->match_flags &= ~MATCHFLG_FINISH_SETUP;
! 469: if (setup_merge_file(ex, lp))
! 470: set_filter_dir(dir, dirlen);
! 471: }
! 472:
! 473: if (strlcpy(dirbuf + dirbuf_len, ex->pattern,
! 474: MAXPATHLEN - dirbuf_len) < MAXPATHLEN - dirbuf_len) {
! 475: parse_filter_file(lp, dirbuf, ex->match_flags,
! 476: XFLG_ANCHORED2ABS);
! 477: } else {
! 478: io_error |= IOERR_GENERAL;
! 479: rprintf(FERROR,
! 480: "cannot add local filter rules in long-named directory: %s\n",
! 481: full_fname(dirbuf));
! 482: }
! 483: dirbuf[dirbuf_len] = '\0';
! 484: }
! 485:
! 486: return (void*)push;
! 487: }
! 488:
! 489: void pop_local_filters(void *mem)
! 490: {
! 491: struct filter_list_struct *ap, *pop = (struct filter_list_struct*)mem;
! 492: int i;
! 493:
! 494: for (i = mergelist_cnt; i-- > 0; ) {
! 495: struct filter_struct *ex = mergelist_parents[i];
! 496: struct filter_list_struct *lp = ex->u.mergelist;
! 497:
! 498: if (verbose > 2) {
! 499: rprintf(FINFO, "[%s] popping filter list%s\n",
! 500: who_am_i(), lp->debug_type);
! 501: }
! 502:
! 503: clear_filter_list(lp);
! 504: }
! 505:
! 506: if (!pop)
! 507: return;
! 508:
! 509: for (i = 0, ap = pop; i < mergelist_cnt; i++) {
! 510: memcpy(mergelist_parents[i]->u.mergelist, ap++,
! 511: sizeof (struct filter_list_struct));
! 512: }
! 513:
! 514: free(pop);
! 515: }
! 516:
! 517: void change_local_filter_dir(const char *dname, int dlen, int dir_depth)
! 518: {
! 519: static int cur_depth = -1;
! 520: static void *filt_array[MAXPATHLEN/2+1];
! 521:
! 522: if (!dname) {
! 523: for ( ; cur_depth >= 0; cur_depth--) {
! 524: if (filt_array[cur_depth]) {
! 525: pop_local_filters(filt_array[cur_depth]);
! 526: filt_array[cur_depth] = NULL;
! 527: }
! 528: }
! 529: return;
! 530: }
! 531:
! 532: assert(dir_depth < MAXPATHLEN/2+1);
! 533:
! 534: for ( ; cur_depth >= dir_depth; cur_depth--) {
! 535: if (filt_array[cur_depth]) {
! 536: pop_local_filters(filt_array[cur_depth]);
! 537: filt_array[cur_depth] = NULL;
! 538: }
! 539: }
! 540:
! 541: cur_depth = dir_depth;
! 542: filt_array[cur_depth] = push_local_filters(dname, dlen);
! 543: }
! 544:
! 545: static int rule_matches(const char *fname, struct filter_struct *ex, int name_is_dir)
! 546: {
! 547: int slash_handling, str_cnt = 0, anchored_match = 0;
! 548: int ret_match = ex->match_flags & MATCHFLG_NEGATE ? 0 : 1;
! 549: char *p, *pattern = ex->pattern;
! 550: const char *strings[16]; /* more than enough */
! 551: const char *name = fname + (*fname == '/');
! 552:
! 553: if (!*name)
! 554: return 0;
! 555:
! 556: if (!ex->u.slash_cnt && !(ex->match_flags & MATCHFLG_WILD2)) {
! 557: /* If the pattern does not have any slashes AND it does
! 558: * not have a "**" (which could match a slash), then we
! 559: * just match the name portion of the path. */
! 560: if ((p = strrchr(name,'/')) != NULL)
! 561: name = p+1;
! 562: } else if (ex->match_flags & MATCHFLG_ABS_PATH && *fname != '/'
! 563: && curr_dir_len > module_dirlen + 1) {
! 564: /* If we're matching against an absolute-path pattern,
! 565: * we need to prepend our full path info. */
! 566: strings[str_cnt++] = curr_dir + module_dirlen + 1;
! 567: strings[str_cnt++] = "/";
! 568: } else if (ex->match_flags & MATCHFLG_WILD2_PREFIX && *fname != '/') {
! 569: /* Allow "**"+"/" to match at the start of the string. */
! 570: strings[str_cnt++] = "/";
! 571: }
! 572: strings[str_cnt++] = name;
! 573: if (name_is_dir) {
! 574: /* Allow a trailing "/"+"***" to match the directory. */
! 575: if (ex->match_flags & MATCHFLG_WILD3_SUFFIX)
! 576: strings[str_cnt++] = "/";
! 577: } else if (ex->match_flags & MATCHFLG_DIRECTORY)
! 578: return !ret_match;
! 579: strings[str_cnt] = NULL;
! 580:
! 581: if (*pattern == '/') {
! 582: anchored_match = 1;
! 583: pattern++;
! 584: }
! 585:
! 586: if (!anchored_match && ex->u.slash_cnt
! 587: && !(ex->match_flags & MATCHFLG_WILD2)) {
! 588: /* A non-anchored match with an infix slash and no "**"
! 589: * needs to match the last slash_cnt+1 name elements. */
! 590: slash_handling = ex->u.slash_cnt + 1;
! 591: } else if (!anchored_match && !(ex->match_flags & MATCHFLG_WILD2_PREFIX)
! 592: && ex->match_flags & MATCHFLG_WILD2) {
! 593: /* A non-anchored match with an infix or trailing "**" (but not
! 594: * a prefixed "**") needs to try matching after every slash. */
! 595: slash_handling = -1;
! 596: } else {
! 597: /* The pattern matches only at the start of the path or name. */
! 598: slash_handling = 0;
! 599: }
! 600:
! 601: if (ex->match_flags & MATCHFLG_WILD) {
! 602: if (wildmatch_array(pattern, strings, slash_handling))
! 603: return ret_match;
! 604: } else if (str_cnt > 1) {
! 605: if (litmatch_array(pattern, strings, slash_handling))
! 606: return ret_match;
! 607: } else if (anchored_match) {
! 608: if (strcmp(name, pattern) == 0)
! 609: return ret_match;
! 610: } else {
! 611: int l1 = strlen(name);
! 612: int l2 = strlen(pattern);
! 613: if (l2 <= l1 &&
! 614: strcmp(name+(l1-l2),pattern) == 0 &&
! 615: (l1==l2 || name[l1-(l2+1)] == '/')) {
! 616: return ret_match;
! 617: }
! 618: }
! 619:
! 620: return !ret_match;
! 621: }
! 622:
! 623:
! 624: static void report_filter_result(enum logcode code, char const *name,
! 625: struct filter_struct const *ent,
! 626: int name_is_dir, const char *type)
! 627: {
! 628: /* If a trailing slash is present to match only directories,
! 629: * then it is stripped out by add_rule(). So as a special
! 630: * case we add it back in here. */
! 631:
! 632: if (verbose >= 2) {
! 633: static char *actions[2][2]
! 634: = { {"show", "hid"}, {"risk", "protect"} };
! 635: const char *w = who_am_i();
! 636: rprintf(code, "[%s] %sing %s %s because of pattern %s%s%s\n",
! 637: w, actions[*w!='s'][!(ent->match_flags&MATCHFLG_INCLUDE)],
! 638: name_is_dir ? "directory" : "file", name, ent->pattern,
! 639: ent->match_flags & MATCHFLG_DIRECTORY ? "/" : "", type);
! 640: }
! 641: }
! 642:
! 643:
! 644: /*
! 645: * Return -1 if file "name" is defined to be excluded by the specified
! 646: * exclude list, 1 if it is included, and 0 if it was not matched.
! 647: */
! 648: int check_filter(struct filter_list_struct *listp, enum logcode code,
! 649: const char *name, int name_is_dir)
! 650: {
! 651: struct filter_struct *ent;
! 652:
! 653: for (ent = listp->head; ent; ent = ent->next) {
! 654: if (ignore_perishable && ent->match_flags & MATCHFLG_PERISHABLE)
! 655: continue;
! 656: if (ent->match_flags & MATCHFLG_PERDIR_MERGE) {
! 657: int rc = check_filter(ent->u.mergelist, code, name,
! 658: name_is_dir);
! 659: if (rc)
! 660: return rc;
! 661: continue;
! 662: }
! 663: if (ent->match_flags & MATCHFLG_CVS_IGNORE) {
! 664: int rc = check_filter(&cvs_filter_list, code, name,
! 665: name_is_dir);
! 666: if (rc)
! 667: return rc;
! 668: continue;
! 669: }
! 670: if (rule_matches(name, ent, name_is_dir)) {
! 671: report_filter_result(code, name, ent, name_is_dir,
! 672: listp->debug_type);
! 673: return ent->match_flags & MATCHFLG_INCLUDE ? 1 : -1;
! 674: }
! 675: }
! 676:
! 677: return 0;
! 678: }
! 679:
! 680: #define RULE_STRCMP(s,r) rule_strcmp((s), (r), sizeof (r) - 1)
! 681:
! 682: static const uchar *rule_strcmp(const uchar *str, const char *rule, int rule_len)
! 683: {
! 684: if (strncmp((char*)str, rule, rule_len) != 0)
! 685: return NULL;
! 686: if (isspace(str[rule_len]) || str[rule_len] == '_' || !str[rule_len])
! 687: return str + rule_len - 1;
! 688: if (str[rule_len] == ',')
! 689: return str + rule_len;
! 690: return NULL;
! 691: }
! 692:
! 693: /* Get the next include/exclude arg from the string. The token will not
! 694: * be '\0' terminated, so use the returned length to limit the string.
! 695: * Also, be sure to add this length to the returned pointer before passing
! 696: * it back to ask for the next token. This routine parses the "!" (list-
! 697: * clearing) token and (depending on the mflags) the various prefixes.
! 698: * The *mflags_ptr value will be set on exit to the new MATCHFLG_* bits
! 699: * for the current token. */
! 700: static const char *parse_rule_tok(const char *p, uint32 mflags, int xflags,
! 701: unsigned int *len_ptr, uint32 *mflags_ptr)
! 702: {
! 703: const uchar *s = (const uchar *)p;
! 704: uint32 new_mflags;
! 705: unsigned int len;
! 706:
! 707: if (mflags & MATCHFLG_WORD_SPLIT) {
! 708: /* Skip over any initial whitespace. */
! 709: while (isspace(*s))
! 710: s++;
! 711: /* Update to point to real start of rule. */
! 712: p = (const char *)s;
! 713: }
! 714: if (!*s)
! 715: return NULL;
! 716:
! 717: new_mflags = mflags & MATCHFLGS_FROM_CONTAINER;
! 718:
! 719: /* Figure out what kind of a filter rule "s" is pointing at. Note
! 720: * that if MATCHFLG_NO_PREFIXES is set, the rule is either an include
! 721: * or an exclude based on the inheritance of the MATCHFLG_INCLUDE
! 722: * flag (above). XFLG_OLD_PREFIXES indicates a compatibility mode
! 723: * for old include/exclude patterns where just "+ " and "- " are
! 724: * allowed as optional prefixes. */
! 725: if (mflags & MATCHFLG_NO_PREFIXES) {
! 726: if (*s == '!' && mflags & MATCHFLG_CVS_IGNORE)
! 727: new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
! 728: } else if (xflags & XFLG_OLD_PREFIXES) {
! 729: if (*s == '-' && s[1] == ' ') {
! 730: new_mflags &= ~MATCHFLG_INCLUDE;
! 731: s += 2;
! 732: } else if (*s == '+' && s[1] == ' ') {
! 733: new_mflags |= MATCHFLG_INCLUDE;
! 734: s += 2;
! 735: } else if (*s == '!')
! 736: new_mflags |= MATCHFLG_CLEAR_LIST; /* Tentative! */
! 737: } else {
! 738: char ch = 0, *mods = "";
! 739: switch (*s) {
! 740: case 'c':
! 741: if ((s = RULE_STRCMP(s, "clear")) != NULL)
! 742: ch = '!';
! 743: break;
! 744: case 'd':
! 745: if ((s = RULE_STRCMP(s, "dir-merge")) != NULL)
! 746: ch = ':';
! 747: break;
! 748: case 'e':
! 749: if ((s = RULE_STRCMP(s, "exclude")) != NULL)
! 750: ch = '-';
! 751: break;
! 752: case 'h':
! 753: if ((s = RULE_STRCMP(s, "hide")) != NULL)
! 754: ch = 'H';
! 755: break;
! 756: case 'i':
! 757: if ((s = RULE_STRCMP(s, "include")) != NULL)
! 758: ch = '+';
! 759: break;
! 760: case 'm':
! 761: if ((s = RULE_STRCMP(s, "merge")) != NULL)
! 762: ch = '.';
! 763: break;
! 764: case 'p':
! 765: if ((s = RULE_STRCMP(s, "protect")) != NULL)
! 766: ch = 'P';
! 767: break;
! 768: case 'r':
! 769: if ((s = RULE_STRCMP(s, "risk")) != NULL)
! 770: ch = 'R';
! 771: break;
! 772: case 's':
! 773: if ((s = RULE_STRCMP(s, "show")) != NULL)
! 774: ch = 'S';
! 775: break;
! 776: default:
! 777: ch = *s;
! 778: if (s[1] == ',')
! 779: s++;
! 780: break;
! 781: }
! 782: switch (ch) {
! 783: case ':':
! 784: new_mflags |= MATCHFLG_PERDIR_MERGE
! 785: | MATCHFLG_FINISH_SETUP;
! 786: /* FALL THROUGH */
! 787: case '.':
! 788: new_mflags |= MATCHFLG_MERGE_FILE;
! 789: mods = MODIFIERS_INCL_EXCL MODIFIERS_MERGE_FILE;
! 790: break;
! 791: case '+':
! 792: new_mflags |= MATCHFLG_INCLUDE;
! 793: /* FALL THROUGH */
! 794: case '-':
! 795: mods = MODIFIERS_INCL_EXCL;
! 796: break;
! 797: case 'S':
! 798: new_mflags |= MATCHFLG_INCLUDE;
! 799: /* FALL THROUGH */
! 800: case 'H':
! 801: new_mflags |= MATCHFLG_SENDER_SIDE;
! 802: mods = MODIFIERS_HIDE_PROTECT;
! 803: break;
! 804: case 'R':
! 805: new_mflags |= MATCHFLG_INCLUDE;
! 806: /* FALL THROUGH */
! 807: case 'P':
! 808: new_mflags |= MATCHFLG_RECEIVER_SIDE;
! 809: mods = MODIFIERS_HIDE_PROTECT;
! 810: break;
! 811: case '!':
! 812: new_mflags |= MATCHFLG_CLEAR_LIST;
! 813: mods = NULL;
! 814: break;
! 815: default:
! 816: rprintf(FERROR, "Unknown filter rule: `%s'\n", p);
! 817: exit_cleanup(RERR_SYNTAX);
! 818: }
! 819: while (mods && *++s && *s != ' ' && *s != '_') {
! 820: if (strchr(mods, *s) == NULL) {
! 821: if (mflags & MATCHFLG_WORD_SPLIT && isspace(*s)) {
! 822: s--;
! 823: break;
! 824: }
! 825: invalid:
! 826: rprintf(FERROR,
! 827: "invalid modifier sequence at '%c' in filter rule: %s\n",
! 828: *s, p);
! 829: exit_cleanup(RERR_SYNTAX);
! 830: }
! 831: switch (*s) {
! 832: case '-':
! 833: if (new_mflags & MATCHFLG_NO_PREFIXES)
! 834: goto invalid;
! 835: new_mflags |= MATCHFLG_NO_PREFIXES;
! 836: break;
! 837: case '+':
! 838: if (new_mflags & MATCHFLG_NO_PREFIXES)
! 839: goto invalid;
! 840: new_mflags |= MATCHFLG_NO_PREFIXES
! 841: | MATCHFLG_INCLUDE;
! 842: break;
! 843: case '/':
! 844: new_mflags |= MATCHFLG_ABS_PATH;
! 845: break;
! 846: case '!':
! 847: new_mflags |= MATCHFLG_NEGATE;
! 848: break;
! 849: case 'C':
! 850: if (new_mflags & MATCHFLG_NO_PREFIXES)
! 851: goto invalid;
! 852: new_mflags |= MATCHFLG_NO_PREFIXES
! 853: | MATCHFLG_WORD_SPLIT
! 854: | MATCHFLG_NO_INHERIT
! 855: | MATCHFLG_CVS_IGNORE;
! 856: break;
! 857: case 'e':
! 858: new_mflags |= MATCHFLG_EXCLUDE_SELF;
! 859: break;
! 860: case 'n':
! 861: new_mflags |= MATCHFLG_NO_INHERIT;
! 862: break;
! 863: case 'p':
! 864: new_mflags |= MATCHFLG_PERISHABLE;
! 865: break;
! 866: case 'r':
! 867: new_mflags |= MATCHFLG_RECEIVER_SIDE;
! 868: break;
! 869: case 's':
! 870: new_mflags |= MATCHFLG_SENDER_SIDE;
! 871: break;
! 872: case 'w':
! 873: new_mflags |= MATCHFLG_WORD_SPLIT;
! 874: break;
! 875: }
! 876: }
! 877: if (*s)
! 878: s++;
! 879: }
! 880:
! 881: if (mflags & MATCHFLG_WORD_SPLIT) {
! 882: const uchar *cp = s;
! 883: /* Token ends at whitespace or the end of the string. */
! 884: while (!isspace(*cp) && *cp != '\0')
! 885: cp++;
! 886: len = cp - s;
! 887: } else
! 888: len = strlen((char*)s);
! 889:
! 890: if (new_mflags & MATCHFLG_CLEAR_LIST) {
! 891: if (!(mflags & MATCHFLG_NO_PREFIXES)
! 892: && !(xflags & XFLG_OLD_PREFIXES) && len) {
! 893: rprintf(FERROR,
! 894: "'!' rule has trailing characters: %s\n", p);
! 895: exit_cleanup(RERR_SYNTAX);
! 896: }
! 897: if (len > 1)
! 898: new_mflags &= ~MATCHFLG_CLEAR_LIST;
! 899: } else if (!len && !(new_mflags & MATCHFLG_CVS_IGNORE)) {
! 900: rprintf(FERROR, "unexpected end of filter rule: %s\n", p);
! 901: exit_cleanup(RERR_SYNTAX);
! 902: }
! 903:
! 904: /* --delete-excluded turns an un-modified include/exclude into a sender-side rule. */
! 905: if (delete_excluded
! 906: && !(new_mflags & (MATCHFLG_RECEIVER_SIDE|MATCHFLG_SENDER_SIDE|MATCHFLG_MERGE_FILE|MATCHFLG_PERDIR_MERGE)))
! 907: new_mflags |= MATCHFLG_SENDER_SIDE;
! 908:
! 909: *len_ptr = len;
! 910: *mflags_ptr = new_mflags;
! 911: return (const char *)s;
! 912: }
! 913:
! 914:
! 915: static char default_cvsignore[] =
! 916: /* These default ignored items come from the CVS manual. */
! 917: "RCS SCCS CVS CVS.adm RCSLOG cvslog.* tags TAGS"
! 918: " .make.state .nse_depinfo *~ #* .#* ,* _$* *$"
! 919: " *.old *.bak *.BAK *.orig *.rej .del-*"
! 920: " *.a *.olb *.o *.obj *.so *.exe"
! 921: " *.Z *.elc *.ln core"
! 922: /* The rest we added to suit ourself. */
! 923: " .svn/ .git/ .hg/ .bzr/";
! 924:
! 925: static void get_cvs_excludes(uint32 mflags)
! 926: {
! 927: static int initialized = 0;
! 928: char *p, fname[MAXPATHLEN];
! 929:
! 930: if (initialized)
! 931: return;
! 932: initialized = 1;
! 933:
! 934: parse_rule(&cvs_filter_list, default_cvsignore,
! 935: mflags | (protocol_version >= 30 ? MATCHFLG_PERISHABLE : 0),
! 936: 0);
! 937:
! 938: p = module_id >= 0 && lp_use_chroot(module_id) ? "/" : getenv("HOME");
! 939: if (p && pathjoin(fname, MAXPATHLEN, p, ".cvsignore") < MAXPATHLEN)
! 940: parse_filter_file(&cvs_filter_list, fname, mflags, 0);
! 941:
! 942: parse_rule(&cvs_filter_list, getenv("CVSIGNORE"), mflags, 0);
! 943: }
! 944:
! 945:
! 946: void parse_rule(struct filter_list_struct *listp, const char *pattern,
! 947: uint32 mflags, int xflags)
! 948: {
! 949: unsigned int pat_len;
! 950: uint32 new_mflags;
! 951: const char *cp, *p;
! 952:
! 953: if (!pattern)
! 954: return;
! 955:
! 956: while (1) {
! 957: /* Remember that the returned string is NOT '\0' terminated! */
! 958: cp = parse_rule_tok(pattern, mflags, xflags,
! 959: &pat_len, &new_mflags);
! 960: if (!cp)
! 961: break;
! 962:
! 963: pattern = cp + pat_len;
! 964:
! 965: if (pat_len >= MAXPATHLEN) {
! 966: rprintf(FERROR, "discarding over-long filter: %.*s\n",
! 967: (int)pat_len, cp);
! 968: continue;
! 969: }
! 970:
! 971: if (new_mflags & MATCHFLG_CLEAR_LIST) {
! 972: if (verbose > 2) {
! 973: rprintf(FINFO,
! 974: "[%s] clearing filter list%s\n",
! 975: who_am_i(), listp->debug_type);
! 976: }
! 977: clear_filter_list(listp);
! 978: continue;
! 979: }
! 980:
! 981: if (new_mflags & MATCHFLG_MERGE_FILE) {
! 982: unsigned int len;
! 983: if (!pat_len) {
! 984: cp = ".cvsignore";
! 985: pat_len = 10;
! 986: }
! 987: len = pat_len;
! 988: if (new_mflags & MATCHFLG_EXCLUDE_SELF) {
! 989: const char *name = cp + len;
! 990: while (name > cp && name[-1] != '/') name--;
! 991: len -= name - cp;
! 992: add_rule(listp, name, len, 0, 0);
! 993: new_mflags &= ~MATCHFLG_EXCLUDE_SELF;
! 994: len = pat_len;
! 995: }
! 996: if (new_mflags & MATCHFLG_PERDIR_MERGE) {
! 997: if (parent_dirscan) {
! 998: if (!(p = parse_merge_name(cp, &len,
! 999: module_dirlen)))
! 1000: continue;
! 1001: add_rule(listp, p, len, new_mflags, 0);
! 1002: continue;
! 1003: }
! 1004: } else {
! 1005: if (!(p = parse_merge_name(cp, &len, 0)))
! 1006: continue;
! 1007: parse_filter_file(listp, p, new_mflags,
! 1008: XFLG_FATAL_ERRORS);
! 1009: continue;
! 1010: }
! 1011: }
! 1012:
! 1013: add_rule(listp, cp, pat_len, new_mflags, xflags);
! 1014:
! 1015: if (new_mflags & MATCHFLG_CVS_IGNORE
! 1016: && !(new_mflags & MATCHFLG_MERGE_FILE))
! 1017: get_cvs_excludes(new_mflags);
! 1018: }
! 1019: }
! 1020:
! 1021:
! 1022: void parse_filter_file(struct filter_list_struct *listp, const char *fname,
! 1023: uint32 mflags, int xflags)
! 1024: {
! 1025: FILE *fp;
! 1026: char line[BIGPATHBUFLEN];
! 1027: char *eob = line + sizeof line - 1;
! 1028: int word_split = mflags & MATCHFLG_WORD_SPLIT;
! 1029:
! 1030: if (!fname || !*fname)
! 1031: return;
! 1032:
! 1033: if (*fname != '-' || fname[1] || am_server) {
! 1034: if (daemon_filter_list.head) {
! 1035: strlcpy(line, fname, sizeof line);
! 1036: clean_fname(line, CFN_COLLAPSE_DOT_DOT_DIRS);
! 1037: if (check_filter(&daemon_filter_list, FLOG, line, 0) < 0)
! 1038: fp = NULL;
! 1039: else
! 1040: fp = fopen(line, "rb");
! 1041: } else
! 1042: fp = fopen(fname, "rb");
! 1043: } else
! 1044: fp = stdin;
! 1045:
! 1046: if (verbose > 2) {
! 1047: rprintf(FINFO, "[%s] parse_filter_file(%s,%x,%x)%s\n",
! 1048: who_am_i(), fname, mflags, xflags,
! 1049: fp ? "" : " [not found]");
! 1050: }
! 1051:
! 1052: if (!fp) {
! 1053: if (xflags & XFLG_FATAL_ERRORS) {
! 1054: rsyserr(FERROR, errno,
! 1055: "failed to open %sclude file %s",
! 1056: mflags & MATCHFLG_INCLUDE ? "in" : "ex",
! 1057: fname);
! 1058: exit_cleanup(RERR_FILEIO);
! 1059: }
! 1060: return;
! 1061: }
! 1062: dirbuf[dirbuf_len] = '\0';
! 1063:
! 1064: while (1) {
! 1065: char *s = line;
! 1066: int ch, overflow = 0;
! 1067: while (1) {
! 1068: if ((ch = getc(fp)) == EOF) {
! 1069: if (ferror(fp) && errno == EINTR) {
! 1070: clearerr(fp);
! 1071: continue;
! 1072: }
! 1073: break;
! 1074: }
! 1075: if (word_split && isspace(ch))
! 1076: break;
! 1077: if (eol_nulls? !ch : (ch == '\n' || ch == '\r'))
! 1078: break;
! 1079: if (s < eob)
! 1080: *s++ = ch;
! 1081: else
! 1082: overflow = 1;
! 1083: }
! 1084: if (overflow) {
! 1085: rprintf(FERROR, "discarding over-long filter: %s...\n", line);
! 1086: s = line;
! 1087: }
! 1088: *s = '\0';
! 1089: /* Skip an empty token and (when line parsing) comments. */
! 1090: if (*line && (word_split || (*line != ';' && *line != '#')))
! 1091: parse_rule(listp, line, mflags, xflags);
! 1092: if (ch == EOF)
! 1093: break;
! 1094: }
! 1095: fclose(fp);
! 1096: }
! 1097:
! 1098: /* If the "for_xfer" flag is set, the prefix is made compatible with the
! 1099: * current protocol_version (if possible) or a NULL is returned (if not
! 1100: * possible). */
! 1101: char *get_rule_prefix(int match_flags, const char *pat, int for_xfer,
! 1102: unsigned int *plen_ptr)
! 1103: {
! 1104: static char buf[MAX_RULE_PREFIX+1];
! 1105: char *op = buf;
! 1106: int legal_len = for_xfer && protocol_version < 29 ? 1 : MAX_RULE_PREFIX-1;
! 1107:
! 1108: if (match_flags & MATCHFLG_PERDIR_MERGE) {
! 1109: if (legal_len == 1)
! 1110: return NULL;
! 1111: *op++ = ':';
! 1112: } else if (match_flags & MATCHFLG_INCLUDE)
! 1113: *op++ = '+';
! 1114: else if (legal_len != 1
! 1115: || ((*pat == '-' || *pat == '+') && pat[1] == ' '))
! 1116: *op++ = '-';
! 1117: else
! 1118: legal_len = 0;
! 1119:
! 1120: if (match_flags & MATCHFLG_ABS_PATH)
! 1121: *op++ = '/';
! 1122: if (match_flags & MATCHFLG_NEGATE)
! 1123: *op++ = '!';
! 1124: if (match_flags & MATCHFLG_CVS_IGNORE)
! 1125: *op++ = 'C';
! 1126: else {
! 1127: if (match_flags & MATCHFLG_NO_INHERIT)
! 1128: *op++ = 'n';
! 1129: if (match_flags & MATCHFLG_WORD_SPLIT)
! 1130: *op++ = 'w';
! 1131: if (match_flags & MATCHFLG_NO_PREFIXES) {
! 1132: if (match_flags & MATCHFLG_INCLUDE)
! 1133: *op++ = '+';
! 1134: else
! 1135: *op++ = '-';
! 1136: }
! 1137: }
! 1138: if (match_flags & MATCHFLG_EXCLUDE_SELF)
! 1139: *op++ = 'e';
! 1140: if (match_flags & MATCHFLG_SENDER_SIDE
! 1141: && (!for_xfer || protocol_version >= 29))
! 1142: *op++ = 's';
! 1143: if (match_flags & MATCHFLG_RECEIVER_SIDE
! 1144: && (!for_xfer || protocol_version >= 29
! 1145: || (delete_excluded && am_sender)))
! 1146: *op++ = 'r';
! 1147: if (match_flags & MATCHFLG_PERISHABLE) {
! 1148: if (!for_xfer || protocol_version >= 30)
! 1149: *op++ = 'p';
! 1150: else if (am_sender)
! 1151: return NULL;
! 1152: }
! 1153: if (op - buf > legal_len)
! 1154: return NULL;
! 1155: if (legal_len)
! 1156: *op++ = ' ';
! 1157: *op = '\0';
! 1158: if (plen_ptr)
! 1159: *plen_ptr = op - buf;
! 1160: return buf;
! 1161: }
! 1162:
! 1163: static void send_rules(int f_out, struct filter_list_struct *flp)
! 1164: {
! 1165: struct filter_struct *ent, *prev = NULL;
! 1166:
! 1167: for (ent = flp->head; ent; ent = ent->next) {
! 1168: unsigned int len, plen, dlen;
! 1169: int elide = 0;
! 1170: char *p;
! 1171:
! 1172: /* Note we need to check delete_excluded here in addition to
! 1173: * the code in parse_rule_tok() because some rules may have
! 1174: * been added before we found the --delete-excluded option.
! 1175: * We must also elide any CVS merge-file rules to avoid a
! 1176: * backward compatibility problem, and we elide any no-prefix
! 1177: * merge files as an optimization (since they can only have
! 1178: * include/exclude rules). */
! 1179: if (ent->match_flags & MATCHFLG_SENDER_SIDE)
! 1180: elide = am_sender ? 1 : -1;
! 1181: if (ent->match_flags & MATCHFLG_RECEIVER_SIDE)
! 1182: elide = elide ? 0 : am_sender ? -1 : 1;
! 1183: else if (delete_excluded && !elide
! 1184: && (!(ent->match_flags & MATCHFLG_PERDIR_MERGE)
! 1185: || ent->match_flags & MATCHFLG_NO_PREFIXES))
! 1186: elide = am_sender ? 1 : -1;
! 1187: if (elide < 0) {
! 1188: if (prev)
! 1189: prev->next = ent->next;
! 1190: else
! 1191: flp->head = ent->next;
! 1192: } else
! 1193: prev = ent;
! 1194: if (elide > 0)
! 1195: continue;
! 1196: if (ent->match_flags & MATCHFLG_CVS_IGNORE
! 1197: && !(ent->match_flags & MATCHFLG_MERGE_FILE)) {
! 1198: int f = am_sender || protocol_version < 29 ? f_out : -2;
! 1199: send_rules(f, &cvs_filter_list);
! 1200: if (f == f_out)
! 1201: continue;
! 1202: }
! 1203: p = get_rule_prefix(ent->match_flags, ent->pattern, 1, &plen);
! 1204: if (!p) {
! 1205: rprintf(FERROR,
! 1206: "filter rules are too modern for remote rsync.\n");
! 1207: exit_cleanup(RERR_PROTOCOL);
! 1208: }
! 1209: if (f_out < 0)
! 1210: continue;
! 1211: len = strlen(ent->pattern);
! 1212: dlen = ent->match_flags & MATCHFLG_DIRECTORY ? 1 : 0;
! 1213: if (!(plen + len + dlen))
! 1214: continue;
! 1215: write_int(f_out, plen + len + dlen);
! 1216: if (plen)
! 1217: write_buf(f_out, p, plen);
! 1218: write_buf(f_out, ent->pattern, len);
! 1219: if (dlen)
! 1220: write_byte(f_out, '/');
! 1221: }
! 1222: flp->tail = prev;
! 1223: }
! 1224:
! 1225: /* This is only called by the client. */
! 1226: void send_filter_list(int f_out)
! 1227: {
! 1228: int receiver_wants_list = prune_empty_dirs
! 1229: || (delete_mode && (!delete_excluded || protocol_version >= 29));
! 1230:
! 1231: if (local_server || (am_sender && !receiver_wants_list))
! 1232: f_out = -1;
! 1233: if (cvs_exclude && am_sender) {
! 1234: if (protocol_version >= 29)
! 1235: parse_rule(&filter_list, ":C", 0, 0);
! 1236: parse_rule(&filter_list, "-C", 0, 0);
! 1237: }
! 1238:
! 1239: send_rules(f_out, &filter_list);
! 1240:
! 1241: if (f_out >= 0)
! 1242: write_int(f_out, 0);
! 1243:
! 1244: if (cvs_exclude) {
! 1245: if (!am_sender || protocol_version < 29)
! 1246: parse_rule(&filter_list, ":C", 0, 0);
! 1247: if (!am_sender)
! 1248: parse_rule(&filter_list, "-C", 0, 0);
! 1249: }
! 1250: }
! 1251:
! 1252: /* This is only called by the server. */
! 1253: void recv_filter_list(int f_in)
! 1254: {
! 1255: char line[BIGPATHBUFLEN];
! 1256: int xflags = protocol_version >= 29 ? 0 : XFLG_OLD_PREFIXES;
! 1257: int receiver_wants_list = prune_empty_dirs
! 1258: || (delete_mode
! 1259: && (!delete_excluded || protocol_version >= 29));
! 1260: unsigned int len;
! 1261:
! 1262: if (!local_server && (am_sender || receiver_wants_list)) {
! 1263: while ((len = read_int(f_in)) != 0) {
! 1264: if (len >= sizeof line)
! 1265: overflow_exit("recv_rules");
! 1266: read_sbuf(f_in, line, len);
! 1267: parse_rule(&filter_list, line, 0, xflags);
! 1268: }
! 1269: }
! 1270:
! 1271: if (cvs_exclude) {
! 1272: if (local_server || am_sender || protocol_version < 29)
! 1273: parse_rule(&filter_list, ":C", 0, 0);
! 1274: if (local_server || am_sender)
! 1275: parse_rule(&filter_list, "-C", 0, 0);
! 1276: }
! 1277:
! 1278: if (local_server) /* filter out any rules that aren't for us. */
! 1279: send_rules(-1, &filter_list);
! 1280: }
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