summaryrefslogtreecommitdiffstats
path: root/ext/Setup.nt
diff options
context:
space:
mode:
Diffstat (limited to 'ext/Setup.nt')
0 files changed, 0 insertions, 0 deletions
generated by cgit (git 2.34.1) at 2026-03-20 21:34:34 +0000
'n9' href='#n9'>9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 
/*
    Authors:
        Jakub Hrozek <jhrozek@redhat.com>

    Copyright (C) 2009 Red Hat

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
 * This file incorporates work covered by the following copyright and
 * permission notice:
 *
 * Copyright (c) 1991 - 1994, Julianne Frances Haugh
 * Copyright (c) 1996 - 2001, Marek Michałkiewicz
 * Copyright (c) 2003 - 2006, Tomasz Kłoczko
 * Copyright (c) 2007 - 2008, Nicolas François
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the copyright holders or contributors may not be used to
 *    endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <talloc.h>

#include "config.h"
#include "util/util.h"
#include "tools/tools_util.h"

int copy_tree(const char *src_root, const char *dst_root,
              uid_t uid, gid_t gid);

struct copy_ctx {
    const char *src_orig;
    const char *dst_orig;
    dev_t       src_dev;
};

/* wrapper in order not to create a temporary context in
 * every iteration */
static int remove_tree_with_ctx(TALLOC_CTX *mem_ctx,
                                dev_t parent_dev,
                                const char *root);

int remove_tree(const char *root)
{
    TALLOC_CTX *tmp_ctx = NULL;
    int ret;

    tmp_ctx = talloc_new(NULL);
    if (!tmp_ctx) {
        return ENOMEM;
    }

    ret = remove_tree_with_ctx(tmp_ctx, 0, root);
    talloc_free(tmp_ctx);
    return ret;
}

/*
 * The context is not freed in case of error
 * because this is a recursive function, will be freed when we
 * reach the top level remove_tree() again
 */
static int remove_tree_with_ctx(TALLOC_CTX *mem_ctx,
                                dev_t parent_dev,
                                const char *root)
{
    char *fullpath = NULL;
    struct dirent *result;
    struct dirent direntp;
    struct stat statres;
    DIR *rootdir = NULL;
    int ret, err;

    rootdir = opendir(root);
    if (rootdir == NULL) {
        ret = errno;
        DEBUG(1, ("Cannot open directory %s [%d][%s]\n",
                  root, ret, strerror(ret)));
        goto fail;
    }

    while (readdir_r(rootdir, &direntp, &result) == 0) {
        if (result == NULL) {
            /* End of directory */
            break;
        }

        if (strcmp (direntp.d_name, ".") == 0 ||
            strcmp (direntp.d_name, "..") == 0) {
            continue;
        }

        fullpath = talloc_asprintf(mem_ctx, "%s/%s", root, direntp.d_name);
        if (fullpath == NULL) {
            ret = ENOMEM;
            goto fail;
        }

        ret = lstat(fullpath, &statres);
        if (ret != 0) {
            ret = errno;
            DEBUG(1, ("Cannot stat %s: [%d][%s]\n",
                      fullpath, ret, strerror(ret)));
            goto fail;
        }

        if (S_ISDIR(statres.st_mode)) {
            /* if directory, recursively descend, but check if on the same FS */
            if (parent_dev && parent_dev != statres.st_dev) {
                DEBUG(1, ("Directory %s is on different filesystem, "
                          "will not follow\n", fullpath));
                ret = EFAULT;
                goto fail;
            }

            ret = remove_tree_with_ctx(mem_ctx, statres.st_dev, fullpath);
            if (ret != EOK) {
                DEBUG(1, ("Removing subdirectory %s failed: [%d][%s]\n",
                            fullpath, ret, strerror(ret)));
                goto fail;
            }
        } else {
            ret = unlink(fullpath);
            if (ret != 0) {
                ret = errno;
                DEBUG(1, ("Removing file %s failed: [%d][%s]\n",
                          fullpath, ret, strerror(ret)));
                goto fail;
            }
        }

        talloc_free(fullpath);
    }

    ret = closedir(rootdir);
    rootdir = NULL;
    if (ret != 0) {
        ret = errno;
        goto fail;
    }

    ret = rmdir(root);
    if (ret != 0) {
        ret = errno;
        goto fail;
    }

    ret = EOK;

fail:
    if (rootdir) {  /* clean up on abnormal exit but retain return code */
        err = closedir(rootdir);
        if (err) {
            DEBUG(1, ("closedir failed, bad dirp?\n"));
        }
    }
    return ret;
}

static int copy_dir(const char *src, const char *dst,
                    const struct stat *statp, const struct timeval mt[2],
                    uid_t uid, gid_t gid)
{
    int ret = 0;

    /*
     * Create a new target directory, make it owned by
     * the user and then recursively copy that directory.
     */
    selinux_file_context(dst);

    ret = mkdir(dst, statp->st_mode);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot mkdir directory '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = chown(dst, uid, gid);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot chown directory '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = chmod(dst, statp->st_mode);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot chmod directory '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = copy_tree(src, dst, uid, gid);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot copy directory from '%s' to '%s': [%d][%s].\n",
                  src, dst, ret, strerror(ret)));
        return ret;
    }

    ret = utimes(dst, mt);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot set utimes on a directory '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    return EOK;
}

static char *talloc_readlink(TALLOC_CTX *mem_ctx, const char *filename)
{
    size_t size = 1024;
    ssize_t nchars;
    char *buffer;

    buffer = talloc_array(mem_ctx, char, size);
    if (!buffer) {
        return NULL;
    }

    while (1) {
        nchars = readlink(filename, buffer, size);
        if (nchars < 0) {
            return NULL;
        }

        if ((size_t) nchars < size) {
            /* The buffer was large enough */
            break;
        }

        /* Try again with a bigger buffer */
        size *= 2;
        buffer = talloc_realloc(mem_ctx, buffer, char, size);
        if (!buffer) {
            return NULL;
        }
    }

    /* readlink does not nul-terminate */
    buffer[nchars] = '\0';
    return buffer;
}

static int copy_symlink(struct copy_ctx *cctx,
                        const char *src,
                        const char *dst,
                        const struct stat *statp,
                        const struct timeval mt[],
                        uid_t uid, gid_t gid)
{
    int ret;
    char *oldlink;
    char *tmp;
    TALLOC_CTX *tmp_ctx = NULL;

    tmp_ctx = talloc_new(cctx);
    if (!tmp_ctx) {
        return ENOMEM;
    }

    /*
     * Get the name of the file which the link points
     * to.  If that name begins with the original
     * source directory name, that part of the link
     * name will be replaced with the original
     * destination directory name.
     */
    oldlink = talloc_readlink(tmp_ctx, src);
    if (oldlink == NULL) {
        ret = ENOMEM;
        goto done;
    }

    /* If src was a link to an entry of the src_orig directory itself,
     * create a link to the corresponding entry in the dst_orig
     * directory.
     * FIXME: This may change a relative link to an absolute link
     */
    if (strncmp(oldlink, cctx->src_orig, strlen(cctx->src_orig)) == 0) {
        tmp = talloc_asprintf(tmp_ctx, "%s%s", cctx->dst_orig, oldlink + strlen(cctx->src_orig));
        if (tmp == NULL) {
            ret = ENOMEM;
            goto done;
        }

        talloc_free(oldlink);
        oldlink = tmp;
    }

    selinux_file_context(dst);

    ret = symlink(oldlink, dst);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("symlink() failed on file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto done;
    }

    ret = lchown(dst, uid, gid);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("lchown() failed on file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto done;
    }

done:
    talloc_free(tmp_ctx);
    return ret;
}

static int copy_special(const char *dst,
                        const struct stat *statp,
                        const struct timeval mt[],
                        uid_t uid, gid_t gid)
{
    int ret = 0;

    selinux_file_context(dst);

    ret = mknod(dst, statp->st_mode & ~07777, statp->st_rdev);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot mknod special file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = chown(dst, uid, gid);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot chown special file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = chmod(dst, statp->st_mode & 07777);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot chmod special file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    ret = utimes(dst, mt);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot call utimes on special file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        return ret;
    }

    return EOK;
}

static int copy_file(const char *src,
                     const char *dst,
                     const struct stat *statp,
                     const struct timeval mt[],
                     uid_t uid, gid_t gid)
{
    int ret;
    int ifd = -1;
    int ofd = -1;
    char buf[1024];
    ssize_t cnt, written;
    struct stat fstatbuf;

    ifd = open(src, O_RDONLY);
    if (ifd < 0) {
        ret = errno;
        DEBUG(1, ("Cannot open() source file '%s': [%d][%s].\n",
                  src, ret, strerror(ret)));
        goto fail;
    }

    ret = fstat(ifd, &fstatbuf);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot fstat() source file '%s': [%d][%s].\n",
                  src, ret, strerror(ret)));
        goto fail;
    }

    if (statp->st_dev != fstatbuf.st_dev ||
        statp->st_ino != fstatbuf.st_ino) {
        DEBUG(1, ("File %s was modified between lstat and open.\n", src));
        ret = EIO;
        goto fail;
    }

    selinux_file_context(dst);

    ofd = open(dst, O_WRONLY | O_CREAT | O_TRUNC, statp->st_mode & 07777);
    if (ofd < 0) {
        ret = errno;
        DEBUG(1, ("Cannot open() destination file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    ret = fchown(ofd, uid, gid);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot fchown() destination file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    ret = fchmod(ofd, statp->st_mode & 07777);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot fchmod() destination file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    while ((cnt = sss_atomic_read_s(ifd, buf, sizeof(buf))) != 0) {
        if (cnt == -1) {
            ret = errno;
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("Cannot read() from source file '%s': [%d][%s].\n",
                   src, ret, strerror(ret)));
            goto fail;
        }

        errno = 0;
        written = sss_atomic_write_s(ofd, buf, cnt);
        if (written == -1) {
            ret = errno;
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("Cannot write() to destination file '%s': [%d][%s].\n",
                   dst, ret, strerror(ret)));
            goto fail;
        }

        if (written != cnt) {
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("Wrote %d bytes, expected %d\n", written, cnt));
            goto fail;
        }
    }

    ret = close(ifd);
    ifd = -1;
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot close() source file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    ret = close(ofd);
    ifd = -1;
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot close() destination file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    ret = utimes(dst, mt);
    if (ret != 0) {
        ret = errno;
        DEBUG(1, ("Cannot call utimes() on destination file '%s': [%d][%s].\n",
                  dst, ret, strerror(ret)));
        goto fail;
    }

    return EOK;

    /* Reachable by jump only */
fail:
    if (ifd != -1) close(ifd);
    if (ofd != -1) close(ofd);
    return ret;
}

/*
 * The context is not freed in case of error
 * because this is a recursive function, will be freed when we
 * reach the top level copy_tree() again
 */
static int copy_entry(struct copy_ctx *cctx,
                      const char *src,
                      const char *dst,
                      uid_t uid,
                      gid_t gid)
{
    int ret = EOK;
    struct stat sb;
    struct timeval mt[2];

    ret = lstat(src, &sb);
    if (ret == -1) {
        ret = errno;
        DEBUG(1, ("Cannot lstat() the source file '%s': [%d][%s].\n",
                  src, ret, strerror(ret)));
        return ret;
    }

    mt[0].tv_sec  = sb.st_atime;
    mt[0].tv_usec = 0;

    mt[1].tv_sec  = sb.st_mtime;
    mt[1].tv_usec = 0;

    if (S_ISLNK (sb.st_mode)) {
        ret = copy_symlink(cctx, src, dst, &sb, mt, uid, gid);
        if (ret != EOK) {
            DEBUG(1, ("Cannot copy symlink '%s' to '%s': [%d][%s]\n",
                      src, dst, ret, strerror(ret)));
        }
        return ret;
    }

    if (S_ISDIR(sb.st_mode)) {
        /* Check if we're still on the same FS */
        if (sb.st_dev != cctx->src_dev) {
            DEBUG(2, ("Will not descend to other FS\n"));
            /* Skip this without error */
            return EOK;
        }
        return copy_dir(src, dst, &sb, mt, uid, gid);
    } else if (!S_ISREG(sb.st_mode)) {
        /*
         * Deal with FIFOs and special files.  The user really
         * shouldn't have any of these, but it seems like it
         * would be nice to copy everything ...
         */
        return copy_special(dst, &sb, mt, uid, gid);
    } else {
        /*
         * Create the new file and copy the contents.  The new
         * file will be owned by the provided UID and GID values.
         */
        return copy_file(src, dst, &sb, mt, uid, gid);
    }

    return ret;
}

/*
 * The context is not freed in case of error
 * because this is a recursive function, will be freed when we
 * reach the top level copy_tree() again
 */
static int copy_tree_ctx(struct copy_ctx *cctx,
                         const char *src_root,
                         const char *dst_root,
                         uid_t uid,
                         gid_t gid)
{
    DIR *src_dir = NULL;
    int ret, err;
    struct dirent *result;
    struct dirent direntp;
    char *src_name, *dst_name;
    TALLOC_CTX *tmp_ctx;

    tmp_ctx = talloc_new(cctx);

    src_dir = opendir(src_root);
    if (src_dir == NULL) {
        ret = errno;
        DEBUG(1, ("Cannot open the source directory %s: [%d][%s].\n",
                  src_root, ret, strerror(ret)));
        goto fail;
    }

    while (readdir_r(src_dir, &direntp, &result) == 0) {
        if (result == NULL) {
            /* End of directory */
            break;
        }

        if (strcmp (direntp.d_name, ".") == 0 ||
            strcmp (direntp.d_name, "..") == 0) {
            continue;
        }

        /* build src and dst paths */