/* * Startup Code for S3C44B0 CPU-core * * (C) Copyright 2004 * DAVE Srl * * http://www.dave-tech.it * http://www.wawnet.biz * mailto:info@wawnet.biz * * See file CREDITS for list of people who contributed to this * project. * * 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 2 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, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include #include /* * Jump vector table */ .globl _start _start: b reset add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 add pc, pc, #0x0c000000 .balignl 16,0xdeadbeef /* ************************************************************************* * * Startup Code (reset vector) * * do important init only if we don't start from memory! * relocate u-boot to ram * setup stack * jump to second stage * ************************************************************************* */ .globl _TEXT_BASE _TEXT_BASE: .word CONFIG_SYS_TEXT_BASE #if defined(CONFIG_SYS_ARM_WITHOUT_RELOC) .globl _armboot_start _armboot_start: .word _start #endif /* * These are defined in the board-specific linker script. */ .globl _bss_start _bss_start: .word __bss_start .globl _bss_end _bss_end: .word _end #ifdef CONFIG_USE_IRQ /* IRQ stack memory (calculated at run-time) */ .globl IRQ_STACK_START IRQ_STACK_START: .word 0x0badc0de /* IRQ stack memory (calculated at run-time) */ .globl FIQ_STACK_START FIQ_STACK_START: .word 0x0badc0de #endif #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) /* IRQ stack memory (calculated at run-time) + 8 bytes */ .globl IRQ_STACK_START_IN IRQ_STACK_START_IN: .word 0x0badc0de .globl _datarel_start _datarel_start: .word __datarel_start .globl _datarelrolocal_start _datarelrolocal_start: .word __datarelrolocal_start .globl _datarellocal_start _datarellocal_start: .word __datarellocal_start .globl _datarelro_start _datarelro_start: .word __datarelro_start .globl _got_start _got_start: .word __got_start .globl _got_end _got_end: .word __got_end /* * the actual reset code */ reset: /* * set the cpu to SVC32 mode */ mrs r0,cpsr bic r0,r0,#0x1f orr r0,r0,#0xd3 msr cpsr,r0 /* * we do sys-critical inits only at reboot, * not when booting from ram! */ #ifndef CONFIG_SKIP_LOWLEVEL_INIT bl cpu_init_crit /* * before relocating, we have to setup RAM timing * because memory timing is board-dependend, you will * find a lowlevel_init.S in your board directory. */ bl lowlevel_init #endif /* Set stackpointer in internal RAM to call board_init_f */ call_board_init_f: ldr sp, =(CONFIG_SYS_INIT_SP_ADDR) ldr r0,=0x00000000 bl board_init_f /*------------------------------------------------------------------------------*/ /* * void relocate_code (addr_sp, gd, addr_moni) * * This "function" does not return, instead it continues in RAM * after relocating the monitor code. * */ .globl relocate_code relocate_code: mov r4, r0 /* save addr_sp */ mov r5, r1 /* save addr of gd */ mov r6, r2 /* save addr of destination */ mov r7, r2 /* save addr of destination */ /* Set up the stack */ stack_setup: mov sp, r4 adr r0, _start ldr r2, _TEXT_BASE ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ cmp r0, r6 beq clear_bss #ifndef CONFIG_SKIP_RELOCATE_UBOOT copy_loop: ldmia r0!, {r9-r10} /* copy from source address [r0] */ stmia r6!, {r9-r10} /* copy to target address [r1] */ cmp r0, r2 /* until source end address [r2] */ blo copy_loop #ifndef CONFIG_PRELOADER /* fix got entries */ ldr r1, _TEXT_BASE /* Text base */ mov r0, r7 /* reloc addr */ ldr r2, _got_start /* addr in Flash */ ldr r3, _got_end /* addr in Flash */ sub r3, r3, r1 add r3, r3, r0 sub r2, r2, r1 add r2, r2, r0 fixloop: ldr r4, [r2] sub r4, r4, r1 add r4, r4, r0 str r4, [r2] add r2, r2, #4 cmp r2, r3 bne fixloop #endif /* now copy to sram the interrupt vector */ adr r0, real_vectors add r2, r0, #1024 ldr r1, =0x0c000000 add r1, r1, #0x08 vector_copy_loop: ldmia r0!, {r3-r10} stmia r1!, {r3-r10} cmp r0, r2 blo vector_copy_loop #endif /* #ifndef CONFIG_SKIP_RELOCATE_UBOOT */ clear_bss: #ifndef CONFIG_PRELOADER ldr r0, _bss_start ldr r1, _bss_end ldr r3, _TEXT_BASE /* Text base */ mov r4, r7 /* reloc addr */ sub r0, r0, r3 add r0, r0, r4 sub r1, r1, r3 add r1, r1, r4 mov r2, #0x00000000 /* clear */ clbss_l:str r2, [r0] /* clear loop... */ add r0, r0, #4 cmp r0, r1 bne clbss_l bl coloured_LED_init bl red_LED_on #endif /* * We are done. Do not return, instead branch to second part of board * initialization, now running from RAM. */ ldr r0, _TEXT_BASE ldr r2, _board_init_r sub r2, r2, r0 add r2, r2, r7 /* position from board_init_r in RAM */ /* setup parameters for board_init_r */ mov r0, r5 /* gd_t */ mov r1, r7 /* dest_addr */ /* jump to it ... */ mov lr, r2 mov pc, lr _board_init_r: .word board_init_r #else /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */ /* * the actual reset code */ reset: /* * set the cpu to SVC32 mode */ mrs r0,cpsr bic r0,r0,#0x1f orr r0,r0,#0x13 msr cpsr,r0 /* * we do sys-critical inits only at reboot, * not when booting from ram! */ #ifndef CONFIG_SKIP_LOWLEVEL_INIT bl cpu_init_crit /* * before relocating, we have to setup RAM timing * because memory timing is board-dependend, you will * find a lowlevel_init.S in your board directory. */ bl lowlevel_init #endif #ifndef CONFIG_SKIP_RELOCATE_UBOOT relocate: /* relocate U-Boot to RAM */ adr r0, _start /* r0 <- current position of code */ ldr r1, _TEXT_BASE /* test if we run from flash or RAM */ cmp r0, r1 /* don't reloc during debug */ beq stack_setup ldr r2, _armboot_start ldr r3, _bss_start sub r2, r3, r2 /* r2 <- size of armboot */ add r2, r0, r2 /* r2 <- source end address */ copy_loop: ldmia r0!, {r3-r10} /* copy from source address [r0] */ stmia r1!, {r3-r10} /* copy to target address [r1] */ cmp r0, r2 /* until source end address [r2] */ blo copy_loop /* now copy to sram the interrupt vector */ adr r0, real_vectors add r2, r0, #1024 ldr r1, =0x0c000000 add r1, r1, #0x08 vector_copy_loop: ldmia r0!, {r3-r10} stmia r1!, {r3-r10} cmp r0, r2 blo vector_copy_loop #endif /* CONFIG_SKIP_RELOCATE_UBOOT */ /* Set up the stack */ stack_setup: ldr r0, _TEXT_BASE /* upper 128 KiB: relocated uboot */ sub r0, r0, #CONFIG_SYS_MALLOC_LEN /* malloc area */ sub r0, r0, #CONFIG_SYS_GBL_DATA_SIZE /* bdinfo */ #ifdef CONFIG_USE_IRQ sub r0, r0, #(CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ) #endif sub sp, r0, #12 /* leave 3 words for abort-stack */ bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ ldr pc, _start_armboot _start_armboot: .word start_armboot #endif /* #if !defined(CONFIG_SYS_ARM_WITHOUT_RELOC) */ /* ************************************************************************* * * CPU_init_critical registers * * setup important registers * setup memory timing * ************************************************************************* */ #define INTCON (0x01c00000+0x200000) #define INTMSK (0x01c00000+0x20000c) #define LOCKTIME (0x01c00000+0x18000c) #define PLLCON (0x01c00000+0x180000) #define CLKCON (0x01c00000+0x180004) #define WTCON (0x01c00000+0x130000) cpu_init_crit: /* disable watch dog */ ldr r0, =WTCON ldr r1, =0x0 str r1, [r0] /* * mask all IRQs by clearing all bits in the INTMRs */ ldr r1,=INTMSK ldr r0, =0x03fffeff str r0, [r1] ldr r1, =INTCON ldr r0, =0x05 str r0, [r1] /* Set Clock Control Register */ ldr r1, =LOCKTIME ldrb r0, =800 strb r0, [r1] ldr r1, =PLLCON #if CONFIG_S3C44B0_CLOCK_SPEED==66 ldr r0, =0x34031 /* 66MHz (Quartz=11MHz) */ #elif CONFIG_S3C44B0_CLOCK_SPEED==75 ldr r0, =0x610c1 /*B2: Xtal=20mhz Fclk=75MHz */ #else # error CONFIG_S3C44B0_CLOCK_SPEED undefined #endif str r0, [r1] ldr r1,=CLKCON ldr r0, =0x7ff8 str r0, [r1] mov pc, lr /*************************************************/ /* interrupt vectors */ /*************************************************/ real_vectors: b reset b undefined_instruction b software_interrupt b prefetch_abort b data_abort b not_used b irq b fiq /*************************************************/ undefined_instruction: mov r6, #3 b reset software_interrupt: mov r6, #4 b reset prefetch_abort: mov r6, #5 b reset data_abort: mov r6, #6 b reset not_used: /* we *should* never reach this */ mov r6, #7 b reset irq: mov r6, #8 b reset fiq: mov r6, #9 b reset 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 
/*
 * Samba Unix/Linux SMB client library
 *
 * Copyright (C) Gregor Beck 2011
 *
 * 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/>.
 */

/**
 * @brief  Check the idmap database.
 * @author Gregor Beck <gb@sernet.de>
 * @date   Mar 2011
 */

#include "net_idmap_check.h"
#include "includes.h"
#include "system/filesys.h"
#include "dbwrap/dbwrap.h"
#include "dbwrap/dbwrap_open.h"
#include "dbwrap/dbwrap_rbt.h"
#include "net.h"
#include "../libcli/security/dom_sid.h"
#include "cbuf.h"
#include "srprs.h"
#include "util_tdb.h"
#include "interact.h"

static int traverse_commit(struct db_record *diff_rec, void* data);
static int traverse_check(struct db_record *rec, void* data);

/* TDB_DATA *******************************************************************/
static char*    print_data(TALLOC_CTX* mem_ctx, TDB_DATA d);
static TDB_DATA parse_data(TALLOC_CTX* mem_ctx, const char** ptr);
static TDB_DATA talloc_copy(TALLOC_CTX* mem_ctx, TDB_DATA data);

/* record *********************************************************************/

enum DT {
	DT_INV = 0,
	DT_SID,	DT_UID,	DT_GID,
	DT_HWM,	DT_VER, DT_SEQ,
};

struct record {
	enum DT key_type, val_type;
	TDB_DATA key, val;
	struct dom_sid sid;
	long unsigned  id;
};

static struct record* parse_record(TALLOC_CTX* ctx, TDB_DATA key, TDB_DATA val);
static struct record* reverse_record(struct record* rec);

static bool is_invalid(const struct record* r) {
	return (r->key_type == DT_INV) || (r->val_type == DT_INV);
}

static bool is_map(const struct record* r) {
	return (r->key_type == DT_SID)
		|| (r->key_type == DT_UID) || (r->key_type == DT_GID);
}

/* action *********************************************************************/

typedef struct check_action {
	const char* fmt;
	const char* name;
	const char* prompt;
	const char* answers;
	char auto_action;
	char default_action;
	bool verbose;
} check_action;

struct check_actions {
	check_action invalid_record;
	check_action missing_reverse;
	check_action invalid_mapping;
	check_action invalid_edit;
	check_action record_exists;
	check_action no_version;
	check_action wrong_version;
	check_action invalid_hwm;
	check_action commit;
	check_action valid_mapping;
	check_action valid_other;
	check_action invalid_diff;
};

static struct check_actions
check_actions_init(const struct check_options* opts) {
	struct check_actions ret = {
		.invalid_record = (check_action) {
			.name = "Invalid record",
			.prompt = "[e]dit/[d]elete/[D]elete all"
			"/[s]kip/[S]kip all",
			.answers = "eds",
			.default_action = 'e',
			.verbose = true,
		},
		.missing_reverse = (check_action) {
			.name = "Missing reverse mapping for",
			.prompt = "[f]ix/[F]ix all/[e]dit/[d]elete/[D]elete all"
			"/[s]kip/[S]kip all",
			.answers = "feds",
			.default_action = 'f',
			.verbose = true,
		},
		.invalid_mapping = (check_action) {
			.fmt = "%1$s: %2$s -> %3$s\n(%4$s <- %3$s)\n",
			.name = "Invalid mapping",
			.prompt = "[e]dit/[d]elete/[D]elete all"
			"/[s]kip/[S]kip all",
			.answers = "eds",
			.default_action = 'd',
			.verbose = true,
		},
		.invalid_edit = (check_action) {
			.name = "Invalid record",
			.prompt = "[e]dit/[d]elete/[D]elete all"
			"/[s]kip/[S]kip all",
			.answers = "eds",
			.default_action = 'e',
			.verbose = true,
		},
		.record_exists = (check_action) {
			.fmt = "%1$s: %2$s\n-%4$s\n+%3$s\n",
			.name = "Record exists",
			.prompt = "[o]verwrite/[O]verwrite all/[e]dit"
			"/[d]elete/[D]elete all/[s]kip/[S]kip all",
			.answers = "oeds",
			.default_action = 'o',
			.verbose = true,
		},
		.no_version = (check_action) {
			.prompt = "[f]ix/[s]kip/[a]bort",
			.answers = "fsa",
			.default_action = 'f',
		},
		.wrong_version = (check_action) {
			.prompt = "[f]ix/[s]kip/[a]bort",
			.answers = "fsa",
			.default_action = 'a',
		},
		.invalid_hwm = (check_action) {
			.prompt = "[f]ix/[s]kip",
			.answers = "fs",
			.default_action = 'f',
		},
		.commit = (check_action) {
			.prompt = "[c]ommit/[l]ist/[s]kip",
			.answers = "cls",
			.default_action = 'l',
			.verbose = true,
		},
		.valid_mapping = (check_action) {
			.fmt = "%1$s: %2$s <-> %3$s\n",
			.name = "Mapping",
			.auto_action = 's',
			.verbose = opts->verbose,
		},
		.valid_other = (check_action) {
			.name = "Other",
			.auto_action = 's',
			.verbose = opts->verbose,
		},
		.invalid_diff = (check_action) {
			.prompt = "[s]kip/[S]kip all/[c]ommit/[C]ommit all"
			"/[a]bort",
			.answers = "sca",
			.default_action = 's',
		},
	};

	if (!opts->repair) {
		ret.invalid_record.auto_action  = 's';
		ret.missing_reverse.auto_action = 's';
		ret.invalid_mapping.auto_action = 's';
		ret.no_version.auto_action      = 's';
		ret.wrong_version.auto_action   = 's';
		ret.invalid_hwm.auto_action     = 's';
		ret.commit.auto_action          = 's';
	}

	if (opts->automatic) {
		ret.invalid_record.auto_action  = 'd'; /* delete */
		ret.missing_reverse.auto_action = 'f'; /* fix */
		ret.invalid_mapping.auto_action = 'd'; /* delete */
		ret.no_version.auto_action      = 'f'; /* fix */
		ret.wrong_version.auto_action   = 'a'; /* abort */
		ret.invalid_hwm.auto_action     = 'f'; /* fix */
		ret.commit.auto_action          = 'c'; /* commit */
		ret.invalid_diff.auto_action    = 'a'; /* abort */
		if (opts->force) {
			ret.wrong_version.auto_action   = 'f'; /* fix */
			ret.invalid_diff.auto_action    = 'c'; /* commit */
		}
	}
	if (opts->test) {
		ret.invalid_diff.auto_action    = 'c'; /* commit */
/*		ret.commit.auto_action          = 'c';*/ /* commit */
	}

	return ret;
}

static char get_action(struct check_action* a, struct record* r, TDB_DATA* v) {
	char ret;
	if (a->verbose && (r != NULL)) {
		if (!a->fmt) {
			d_printf("%s: %s ", a->name, print_data(r, r->key));
			if (is_map(r)) {
				d_printf("-> %s\n", print_data(r, r->val));
			} else if (r->key_type == DT_HWM ||
				   r->key_type == DT_VER ||
				   r->key_type == DT_SEQ)
			{
				d_printf(": %ld\n", r->id);
			} else {
				d_printf("\n");
			}
		} else {
			d_printf(a->fmt, a->name,
				 print_data(r, r->key),
				 print_data(r, r->val),
				 (v ? print_data(r, *v) : ""));
		}
	}

	if (a->auto_action != '\0') {
		return a->auto_action;
	}

	ret = interact_prompt(a->prompt, a->answers, a->default_action);

	if (isupper(ret)) {
		ret = tolower(ret);
		a->auto_action = ret;
	}
	a->default_action = ret;
	return ret;
}

/*  *************************************************************************/

typedef struct {
	TDB_DATA oval, nval;
} TDB_DATA_diff;

static TDB_DATA pack_diff(TDB_DATA_diff* diff) {
	return (TDB_DATA) {
		.dptr = (uint8_t *)diff,
		.dsize = sizeof(TDB_DATA_diff),
	};
}

static TDB_DATA_diff unpack_diff(TDB_DATA data) {
	assert(data.dsize == sizeof(TDB_DATA_diff));
	return *(TDB_DATA_diff*)data.dptr;
}

#define DEBUG_DIFF(LEV,MEM,MSG,KEY,OLD,NEW)			\
	DEBUG(LEV, ("%s: %s\n", MSG, print_data(MEM, KEY)));	\
	if (!tdb_data_is_empty(OLD)) {				\
		DEBUGADD(LEV, ("-%s\n", print_data(MEM, OLD)));	\
	}							\
	if (!tdb_data_is_empty(NEW)) {				\
		DEBUGADD(LEV, ("+%s\n", print_data(MEM, NEW)));	\
	}

struct check_ctx {
	int oflags;
	char* name;
	bool transaction;
	struct db_context *db;
	struct db_context *diff;
	struct check_actions action;

	uint32_t uid_hwm;
	uint32_t gid_hwm;

	unsigned n_invalid_record;
	unsigned n_missing_reverse;
	unsigned n_invalid_mappping;
	unsigned n_map;
	unsigned n_other;
	unsigned n_diff;
	struct check_options opts;
};


static void adjust_hwm(struct check_ctx* ctx, const struct record* r);

static int add_record(struct check_ctx* ctx, TDB_DATA key, TDB_DATA value)
{
	NTSTATUS status;
	TDB_DATA_diff diff;
	TALLOC_CTX* mem = talloc_new(ctx->diff);
	TDB_DATA recvalue;
	struct db_record *rec = dbwrap_fetch_locked(ctx->diff, mem, key);

	if (rec == NULL) {
		return -1;
	}

	recvalue = dbwrap_record_get_value(rec);

	if (recvalue.dptr == 0) { /* first entry */
		status = dbwrap_fetch(ctx->db, ctx->diff, key, &diff.oval);
		if (!NT_STATUS_IS_OK(status)) {
			diff.oval = tdb_null;
		}
	} else {
		diff = unpack_diff(recvalue);
		talloc_free(diff.nval.dptr);
	}
	diff.nval = talloc_copy(ctx->diff, value);

	DEBUG_DIFF(2, mem, "TDB DIFF", key, diff.oval, diff.nval);

	status = dbwrap_record_store(rec, pack_diff(&diff), 0);

	talloc_free(mem);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0, ("could not store record %s\n", nt_errstr(status)));
		return -1;
	}
	ctx->n_diff ++;
	return 0;
}

static int del_record(struct check_ctx* ctx, TDB_DATA key) {
	return add_record(ctx, key, tdb_null);
}

static TDB_DATA
fetch_record(struct check_ctx* ctx, TALLOC_CTX* mem_ctx, TDB_DATA key)
{
	TDB_DATA tmp;
	NTSTATUS status;

	status = dbwrap_fetch(ctx->diff, mem_ctx, key, &tmp);

	if (NT_STATUS_IS_OK(status)) {
		TDB_DATA_diff diff = unpack_diff(tmp);
		TDB_DATA ret = talloc_copy(mem_ctx, diff.nval);
		talloc_free(tmp.dptr);
		return ret;
	}

	status = dbwrap_fetch(ctx->db, mem_ctx, key, &tmp);
	if (!NT_STATUS_IS_OK(status)) {
		return tdb_null;
	}

	return tmp;
}

static void edit_record(struct record* r) {
	TALLOC_CTX* mem = talloc_new(r);
	cbuf* ost = cbuf_new(mem);
	const char* str;
	struct record* nr;
	TDB_DATA key;
	TDB_DATA val;
	cbuf_printf(ost, "%s %s\n",
		    print_data(mem, r->key), print_data(mem, r->val));
	str = interact_edit(mem, cbuf_gets(ost, 0));
	key = parse_data(mem, &str);
	val = parse_data(mem, &str);
	nr = parse_record(talloc_parent(r), key, val);
	if (nr != NULL) {
		*r = *nr;
	}
	talloc_free(mem);
}

static bool check_version(struct check_ctx* ctx) {
	static const char* key = "IDMAP_VERSION";
	uint32_t version;
	NTSTATUS status;
	char action = 's';
	struct check_actions* act = &ctx->action;

	status = dbwrap_fetch_uint32(ctx->db, key, &version);
	if (!NT_STATUS_IS_OK(status)) {
		d_printf("No version number, assume 2\n");
		action = get_action(&act->no_version, NULL, NULL);
	} else if (version != 2) {
		d_printf("Wrong version number %d, should be 2\n", version);
		action = get_action(&act->wrong_version, NULL, NULL);
	}
	switch (action) {
	case 's':
		break;
	case 'f':
		SIVAL(&version, 0, 2);
		add_record(ctx, string_term_tdb_data(key),
			   make_tdb_data((uint8_t *)&version, sizeof(uint32_t)));
		break;
	case 'a':
		return false;
	default:
		assert(false);
	}
	return true;
}

static void check_hwm(struct check_ctx* ctx, const char* key, uint32_t target) {
	uint32_t hwm;
	char action = 's';
	NTSTATUS status;
	struct check_actions* act = &ctx->action;

	status = dbwrap_fetch_uint32(ctx->db, key, &hwm);
	if (!NT_STATUS_IS_OK(status)) {
		d_printf("No %s should be %d\n", key, target);
		action = get_action(&act->invalid_hwm, NULL, NULL);
	} else if (target < hwm) {
		d_printf("Invalid %s %d: should be %d\n", key, hwm, target);
		action = get_action(&act->invalid_hwm, NULL, NULL);
	}
	if (action == 'f') {
		SIVAL(&hwm, 0, target);
		add_record(ctx, string_term_tdb_data(key),
			   make_tdb_data((uint8_t *)&hwm, sizeof(uint32_t)));
	}
}

int traverse_check(struct db_record *rec, void* data) {
	struct check_ctx* ctx = (struct check_ctx*)data;
	struct check_actions* act = &ctx->action;
	TALLOC_CTX* mem = talloc_new(ctx->diff);
	TDB_DATA key;
	TDB_DATA value;
	struct record *r;
	char action = 's';

	key = dbwrap_record_get_key(rec);
	value = dbwrap_record_get_value(rec);

	r = parse_record(mem, key, value);

	if (is_invalid(r)) {
		action = get_action(&act->invalid_record, r, NULL);
		ctx->n_invalid_record++;
	} else if (is_map(r)) {
		TDB_DATA back = fetch_record(ctx, mem, r->val);
		if (back.dptr == NULL) {
			action = get_action(&act->missing_reverse, r, NULL);
			ctx->n_missing_reverse++;
		} else if (!tdb_data_equal(r->key, back)) {
			action = get_action(&act->invalid_mapping, r, &back);
			ctx->n_invalid_mappping++;
		} else {
			if (r->key_type == DT_SID) {
				action = get_action(&act->valid_mapping, r, NULL);
				ctx->n_map++;
			} else {
				action = get_action(&act->valid_mapping, NULL,
						    NULL);
			}
		}
		adjust_hwm(ctx, r);
	} else {
		action = get_action(&act->valid_other, r, NULL);
		ctx->n_other++;
	}

	while (action) {
		switch (action) {
		case 's': /* skip */
			break;
		case 'd': /* delete */
			del_record(ctx, key);
			break;
		case 'f': /* add reverse mapping */
			add_record(ctx, value, key);
			break;
		case 'e': /* edit */
			edit_record(r);
			action = 'o';
			if (is_invalid(r)) {
				action = get_action(&act->invalid_edit, r,NULL);
				continue;
			}
			if (!tdb_data_equal(key, r->key)) {
				TDB_DATA oval = fetch_record(ctx, mem, r->key);
				if (!tdb_data_is_empty(oval) &&
				    !tdb_data_equal(oval, r->val))
				{
					action = get_action(&act->record_exists,
							    r, &oval);
					if (action != 'o') {
						continue;
					}
				}
			}
			if (is_map(r)) {
				TDB_DATA okey = fetch_record(ctx, mem, r->val);
				if (!tdb_data_is_empty(okey) &&
				    !tdb_data_equal(okey, r->key))
				{
					action = get_action(&act->record_exists,
							    reverse_record(r),
							    &okey);
				}
			}
			continue;
		case 'o': /* overwrite */
			adjust_hwm(ctx, r);
			if (!tdb_data_equal(key, r->key)) {
				del_record(ctx, key);
			}
			add_record(ctx, r->key, r->val);
			if (is_map(r)) {
				add_record(ctx, r->val, r->key);
			}
		}
		action = '\0';
	};

	talloc_free(mem);

	return 0;
}

/******************************************************************************/

void adjust_hwm(struct check_ctx* ctx, const struct record* r) {
	enum DT type = (r->key_type == DT_SID) ? r->val_type : r->key_type;
	if (type == DT_UID) {
		ctx->uid_hwm = MAX(ctx->uid_hwm, r->id);
	} else if (type == DT_GID) {
		ctx->gid_hwm = MAX(ctx->gid_hwm, r->id);
	}
}

TDB_DATA talloc_copy(TALLOC_CTX* mem_ctx, TDB_DATA data) {
	TDB_DATA ret = {
		.dptr  = (uint8_t *)talloc_size(mem_ctx, data.dsize+1),
		.dsize = data.dsize
	};
	if (ret.dptr == NULL) {
		ret.dsize = 0;
	} else {
		memcpy(ret.dptr, data.dptr, data.dsize);
		ret.dptr[ret.dsize] = '\0';
	}
	return ret;
}

static bool is_cstr(TDB_DATA str) {
	return !tdb_data_is_empty(str) && str.dptr[str.dsize-1] == '\0';
}

static bool parse_sid (TDB_DATA str, enum DT* type, struct dom_sid* sid) {
	struct dom_sid tmp;
	const char* s = (const char*)str.dptr;
	if ((s[0] == 'S') && string_to_sid(&tmp, s)) {
		*sid = tmp;
		*type = DT_SID;
		return true;
	}
	return false;
}

static bool parse_xid(TDB_DATA str, enum DT* type, unsigned long* id) {
	char c, t;
	unsigned long tmp;
	if (sscanf((const char*)str.dptr, "%cID %lu%c", &c, &tmp, &t) == 2) {
		if (c == 'U') {
			*id = tmp;
			*type = DT_UID;
			return true;
		} else if (c == 'G') {
			*id = tmp;
			*type = DT_GID;
			return true;
		}
	}
	return false;
}


struct record*
parse_record(TALLOC_CTX* mem_ctx, TDB_DATA key, TDB_DATA val)
{
	struct record* ret = talloc_zero(mem_ctx, struct record);
	if (ret == NULL) {
		DEBUG(0, ("Out of memory.\n"));
		return NULL;
	}
	ret->key = talloc_copy(ret, key);
	ret->val = talloc_copy(ret, val);
	if ((ret->key.dptr == NULL && key.dptr != NULL) ||
	    (ret->val.dptr == NULL && val.dptr != NULL))
	{
		talloc_free(ret);
		DEBUG(0, ("Out of memory.\n"));
		return NULL;
	}
	assert((ret->key_type == DT_INV) && (ret->val_type == DT_INV));

	if (!is_cstr(key)) {
		return ret;
	}
	if (parse_sid(key, &ret->key_type, &ret->sid)) {
		parse_xid(val, &ret->val_type, &ret->id);
	} else if (parse_xid(key, &ret->key_type, &ret->id)) {
		if (is_cstr(val)) {
			parse_sid(val, &ret->val_type, &ret->sid);
		}
	} else if (strcmp((const char*)key.dptr, "USER HWM") == 0) {
		ret->key_type = DT_HWM;
		if (val.dsize == 4) {
			ret->id = IVAL(val.dptr,0);
			ret->val_type = DT_UID;
		}
	} else if (strcmp((const char*)key.dptr, "GROUP HWM") == 0) {
		ret->key_type = DT_HWM;
		if (val.dsize == 4) {
			ret->id = IVAL(val.dptr,0);
			ret->val_type = DT_GID;
		}
	} else if (strcmp((const char*)key.dptr, "IDMAP_VERSION") == 0) {
		ret->key_type = DT_VER;
		if (val.dsize == 4) {
			ret->id = IVAL(val.dptr,0);
			ret->val_type = DT_VER;
		}
	} else if (strcmp((const char*)key.dptr, "__db_sequence_number__") == 0) {
		ret->key_type = DT_SEQ;
		if (val.dsize == 8) {
			ret->id = *(uint64_t*)val.dptr;
			ret->val_type = DT_SEQ;
		}
	}

	return ret;
}

struct record* reverse_record(struct record* in)
{
	return parse_record(talloc_parent(in), in->val, in->key);
}


/******************************************************************************/


char* print_data(TALLOC_CTX* mem_ctx, TDB_DATA d)
{
	if (!tdb_data_is_empty(d)) {
		char* ret = NULL;
		cbuf* ost = cbuf_new(mem_ctx);
		int len = cbuf_print_quoted(ost, (const char*)d.dptr, d.dsize);
		if (len != -1) {
			cbuf_swapptr(ost, &ret, 0);
			talloc_steal(mem_ctx, ret);
		}
		talloc_free(ost);
		return ret;
	}
	return talloc_strdup(mem_ctx, "<NULL>");
}


TDB_DATA parse_data(TALLOC_CTX* mem_ctx, const char** ptr) {
	cbuf* ost = cbuf_new(mem_ctx);
	TDB_DATA ret = tdb_null;
	srprs_skipws(ptr);
	if (srprs_quoted(ptr, ost)) {
		ret.dsize = cbuf_getpos(ost);
		ret.dptr = (uint8_t *)talloc_steal(mem_ctx, cbuf_gets(ost,0));
	}
	talloc_free(ost);
	return ret;
}

static int traverse_print_diff(struct db_record *rec, void* data) {
	struct check_ctx* ctx = (struct check_ctx*)data;
	TDB_DATA key;
	TDB_DATA value;
	TDB_DATA_diff diff;
	TALLOC_CTX* mem = talloc_new(ctx->diff);

	key = dbwrap_record_get_key(rec);
	value = dbwrap_record_get_value(rec);
	diff = unpack_diff(value);

	DEBUG_DIFF(0, mem, "DIFF", key, diff.oval, diff.nval);

	talloc_free(mem);
	return 0;
}


static int traverse_commit(struct db_record *diff_rec, void* data) {
	struct check_ctx* ctx = (struct check_ctx*)data;
	TDB_DATA key;
	TDB_DATA diff_value;
	TDB_DATA_diff diff;
	TDB_DATA value;
	TALLOC_CTX* mem = talloc_new(ctx->diff);
	int ret = -1;
	NTSTATUS status;
	struct check_actions* act = &ctx->action;
	struct db_record* rec;

	key = dbwrap_record_get_key(diff_rec);
	diff_value = dbwrap_record_get_value(diff_rec);
	diff = unpack_diff(diff_value);

	rec = dbwrap_fetch_locked(ctx->db, mem, key);
	if (rec == NULL) {
		goto done;
	}

	value = dbwrap_record_get_value(rec);

	if (!tdb_data_equal(value, diff.oval)) {
		char action;

		d_printf("Warning: record has changed: %s\n"
			 "expected: %s got %s\n", print_data(mem, key),
			 print_data(mem, diff.oval),
			 print_data(mem, value));

		action = get_action(&act->invalid_diff, NULL, NULL);
		if (action == 's') {
			ret = 0;
			goto done;
		} else if (action == 'a') {
			goto done;
		}
	}

	DEBUG_DIFF(0, mem, "Commit", key, diff.oval, diff.nval);

	if (tdb_data_is_empty(diff.nval)) {
		status = dbwrap_record_delete(rec);
	} else {
		status = dbwrap_record_store(rec, diff.nval, 0);
	}

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0, ("could not store record %s\n", nt_errstr(status)));
		if (!ctx->opts.force) {
			goto done;
		}
	}
	ret = 0;
done:
	talloc_free(mem);
	return  ret;
}

static struct check_ctx*
check_init(TALLOC_CTX* mem_ctx, const struct check_options* o)
{
	struct check_ctx* ctx = talloc_zero(mem_ctx, struct check_ctx);
	if (ctx == NULL) {
		DEBUG(0, (_("No memory\n")));
		return NULL;
	}

	ctx->diff = db_open_rbt(ctx);
	if (ctx->diff == NULL) {
		talloc_free(ctx);
		DEBUG(0, (_("No memory\n")));
		return NULL;
	}

	ctx->action = check_actions_init(o);
	ctx->opts = *o;
	return ctx;
}

static bool check_open_db(struct check_ctx* ctx, const char* name, int oflags)
{
	if (name == NULL) {
		d_fprintf(stderr, _("Error: name == NULL in check_open_db().\n"));
		return false;
	}

	if (ctx->db != NULL) {
		if ((ctx->oflags == oflags) && (strcmp(ctx->name, name))) {
			return true;
		} else {
			TALLOC_FREE(ctx->db);
		}
	}

	ctx->db = db_open(ctx, name, 0, TDB_DEFAULT, oflags, 0,
			  DBWRAP_LOCK_ORDER_1);
	if (ctx->db == NULL) {
		d_fprintf(stderr,
			  _("Could not open idmap db (%s) for writing: %s\n"),
			  name, strerror(errno));
		return false;
	}

	if (ctx->name != name) {
		TALLOC_FREE(ctx->name);
		ctx->name = talloc_strdup(ctx, name);
	}

	ctx->oflags = oflags;
	return true;
}

static bool check_do_checks(struct check_ctx* ctx)
{
	NTSTATUS status;

	if (!check_version(ctx)) {
		return false;
	}

	status = dbwrap_traverse(ctx->db, traverse_check, ctx, NULL);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0, ("failed to traverse %s\n", ctx->name));
		return false;
	}

	check_hwm(ctx, "USER HWM", ctx->uid_hwm + 1);
	check_hwm(ctx, "GROUP HWM", ctx->gid_hwm + 1);

	return true;
}

static void check_summary(const struct check_ctx* ctx)
{
	d_printf("uid hwm: %d\ngid hwm: %d\n", ctx->uid_hwm, ctx->gid_hwm);
	d_printf("mappings: %d\nother: %d\n", ctx->n_map, ctx->n_other);
	d_printf("invalid records: %d\nmissing links: %d\ninvalid links: %d\n",
		 ctx->n_invalid_record, ctx->n_missing_reverse,
		 ctx->n_invalid_mappping);
	d_printf("%u changes:\n", ctx->n_diff);
}

static bool check_transaction_start(struct check_ctx* ctx) {
	return (dbwrap_transaction_start(ctx->db) == 0);
}

static bool check_transaction_commit(struct check_ctx* ctx) {
	return (dbwrap_transaction_commit(ctx->db) == 0);
}

static bool check_transaction_cancel(struct check_ctx* ctx) {
	return (dbwrap_transaction_cancel(ctx->db) == 0);
}


static void check_diff_list(struct check_ctx* ctx) {
	NTSTATUS status = dbwrap_traverse(ctx->diff, traverse_print_diff, ctx, NULL);

	if (!NT_STATUS_IS_OK(status)) {
		DEBUG(0, ("failed to traverse diff\n"));
	}

}

static bool check_commit(struct check_ctx* ctx)
{
	struct check_actions* act = &ctx->action;
	char action;
	NTSTATUS status = NT_STATUS_OK;

	check_summary(ctx);

	if (ctx->n_diff == 0) {
		return true;
	}

	while ((action = get_action(&act->commit, NULL, NULL)) == 'l') {
		check_diff_list(ctx);
	}
	if (action == 's') {
		return true;
	}
	assert(action == 'c');

	if (!check_open_db(ctx, ctx->name, O_RDWR)) {
		return false;
	}

	if (!check_transaction_start(ctx)) {
		return false;
	}

	status = dbwrap_traverse(ctx->diff, traverse_commit, ctx, NULL);

	if (!NT_STATUS_IS_OK(status)) {
		check_transaction_cancel(ctx);
		return false;
	}
	if (ctx->opts.test) { /*get_action? */
		return check_transaction_cancel(ctx);
	} else {
		return check_transaction_commit(ctx);
	}
}

int net_idmap_check_db(const char* db, const struct check_options* o)
{
	int ret = -1;
	TALLOC_CTX* mem_ctx = talloc_stackframe();
	struct check_ctx* ctx = check_init(mem_ctx, o);

	if (!o->automatic && !isatty(STDIN_FILENO)) {
		DEBUG(0, ("Interactive use needs tty, use --auto\n"));
		goto done;
	}
	if (o->lock) {
		if (check_open_db(ctx, db, O_RDWR)
		    && check_transaction_start(ctx))
		{
			if ( check_do_checks(ctx)
			     && check_commit(ctx)
			     && check_transaction_commit(ctx))
			{
				ret = 0;
			} else {
				check_transaction_cancel(ctx);
			}
		}
	} else {
		if (check_open_db(ctx, db, O_RDONLY)
		    && check_do_checks(ctx)
		    && check_commit(ctx))
		{
			ret = 0;
		}
	}
done:
	talloc_free(mem_ctx);
	return ret;
}


/*Local Variables:*/
/*mode: c*/
/*End:*/
generated by cgit (git 2.34.1) at 2025-10-17 08:41:30 +0000