1 2 3 4 5 6 7 8 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718
|
/*
* Copyright (C) 2007-2013 Sourcefire, Inc.
* Copyright (C) 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* Authors: Tomasz Kojm
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include "matcher.h"
#ifndef __OTHERS_H_LC
#define __OTHERS_H_LC
#if HAVE_CONFIG_H
#include "clamav-config.h"
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_PTHREAD_H
#include <pthread.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "cltypes.h"
#include "clamav.h"
#include "dconf.h"
#include "filetypes.h"
#include "fmap.h"
#include "libclamunrar_iface/unrar_iface.h"
#include "regex/regex.h"
#include "bytecode.h"
#include "bytecode_api.h"
#include "events.h"
#include "crtmgr.h"
#ifdef HAVE_JSON
#include "json.h"
#endif
#if HAVE_LIBXML2
#define CLAMAV_MIN_XMLREADER_FLAGS (XML_PARSE_NOERROR | XML_PARSE_NONET)
#endif
/*
* CL_FLEVEL is the signature f-level specific to the current code and
* should never be modified
* CL_FLEVEL_DCONF is used in the dconf module and can be bumped by
* distribution packagers provided they fix *all* security issues found
* in the old versions of ClamAV. Updating CL_FLEVEL_DCONF will result
* in re-enabling affected modules.
*/
#define CL_FLEVEL 79
#define CL_FLEVEL_DCONF CL_FLEVEL
#define CL_FLEVEL_SIGTOOL CL_FLEVEL
extern uint8_t cli_debug_flag;
extern uint8_t cli_always_gen_section_hash;
/*
* CLI_ISCONTAINED(buf1, size1, buf2, size2) checks if buf2 is contained
* within buf1.
*
* buf1 and buf2 are pointers (or offsets) for the main buffer and the
* sub-buffer respectively, and size1/2 are their sizes
*
* The macro can be used to protect against wraps.
*/
#define CLI_ISCONTAINED(bb, bb_size, sb, sb_size) \
((bb_size) > 0 && (sb_size) > 0 && (size_t)(sb_size) <= (size_t)(bb_size) \
&& (sb) >= (bb) && ((sb) + (sb_size)) <= ((bb) + (bb_size)) && ((sb) + (sb_size)) > (bb) && (sb) < ((bb) + (bb_size)))
#define CLI_ISCONTAINED2(bb, bb_size, sb, sb_size) \
((bb_size) > 0 && (sb_size) >= 0 && (size_t)(sb_size) <= (size_t)(bb_size) \
&& (sb) >= (bb) && ((sb) + (sb_size)) <= ((bb) + (bb_size)) && ((sb) + (sb_size)) >= (bb) && (sb) < ((bb) + (bb_size)))
#define CLI_MAX_ALLOCATION (182*1024*1024)
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h> /* for NAME_MAX */
#endif
/* Maximum filenames under various systems - njh */
#ifndef NAME_MAX /* e.g. Linux */
# ifdef MAXNAMELEN /* e.g. Solaris */
# define NAME_MAX MAXNAMELEN
# else
# ifdef FILENAME_MAX /* e.g. SCO */
# define NAME_MAX FILENAME_MAX
# else
# define NAME_MAX 256
# endif
# endif
#endif
#if NAME_MAX < 256
#undef NAME_MAX
#define NAME_MAX 256
#endif
typedef struct bitset_tag
{
unsigned char *bitset;
unsigned long length;
} bitset_t;
/* internal clamav context */
typedef struct cli_ctx_tag {
const char **virname;
unsigned int num_viruses; /* manages virname when CL_SCAN_ALLMATCHES == 1 */
unsigned int size_viruses; /* manages virname when CL_SCAN_ALLMATCHES == 1 */
unsigned long int *scanned;
const struct cli_matcher *root;
const struct cl_engine *engine;
unsigned long scansize;
unsigned int options;
unsigned int recursion;
unsigned int scannedfiles;
unsigned int found_possibly_unwanted;
unsigned int corrupted_input;
unsigned int img_validate;
cli_file_t container_type; /* FIXME: to be made into a stack or array - see bb#1579 & bb#1293 */
size_t container_size;
unsigned char handlertype_hash[16];
struct cli_dconf *dconf;
fmap_t **fmap;
bitset_t* hook_lsig_matches;
void *cb_ctx;
cli_events_t* perf;
#ifdef HAVE__INTERNAL__SHA_COLLECT
char entry_filename[2048];
int sha_collect;
#endif
#ifdef HAVE_JSON
struct json_object *properties;
struct json_object *wrkproperty;
#endif
struct timeval time_limit;
} cli_ctx;
#define STATS_ANON_UUID "5b585e8f-3be5-11e3-bf0b-18037319526c"
#define STATS_MAX_SAMPLES 50
#define STATS_MAX_MEM 1024*1024
typedef struct cli_flagged_sample {
char **virus_name;
char md5[16];
uint32_t size; /* A size of zero means size is unavailable (why would this ever happen?) */
uint32_t hits;
stats_section_t *sections;
struct cli_flagged_sample *prev;
struct cli_flagged_sample *next;
} cli_flagged_sample_t;
typedef struct cli_clamav_intel {
char *hostid;
char *host_info;
cli_flagged_sample_t *samples;
uint32_t nsamples;
uint32_t maxsamples;
uint32_t maxmem;
uint32_t timeout;
time_t nextupdate;
struct cl_engine *engine;
#ifdef CL_THREAD_SAFE
pthread_mutex_t mutex;
#endif
} cli_intel_t;
typedef struct {uint64_t v[2][4];} icon_groupset;
struct icomtr {
unsigned int group[2];
unsigned int color_avg[3];
unsigned int color_x[3];
unsigned int color_y[3];
unsigned int gray_avg[3];
unsigned int gray_x[3];
unsigned int gray_y[3];
unsigned int bright_avg[3];
unsigned int bright_x[3];
unsigned int bright_y[3];
unsigned int dark_avg[3];
unsigned int dark_x[3];
unsigned int dark_y[3];
unsigned int edge_avg[3];
unsigned int edge_x[3];
unsigned int edge_y[3];
unsigned int noedge_avg[3];
unsigned int noedge_x[3];
unsigned int noedge_y[3];
unsigned int rsum;
unsigned int gsum;
unsigned int bsum;
unsigned int ccount;
char *name;
};
struct icon_matcher {
char **group_names[2];
unsigned int group_counts[2];
struct icomtr *icons[3];
unsigned int icon_counts[3];
};
struct cli_dbinfo {
char *name;
unsigned char *hash;
size_t size;
struct cl_cvd *cvd;
struct cli_dbinfo *next;
};
struct cl_engine {
uint32_t refcount; /* reference counter */
uint32_t sdb;
uint32_t dboptions;
uint32_t dbversion[2];
uint32_t ac_only;
uint32_t ac_mindepth;
uint32_t ac_maxdepth;
char *tmpdir;
uint32_t keeptmp;
uint64_t engine_options;
/* Limits */
uint64_t maxscansize; /* during the scanning of archives this size
* will never be exceeded
*/
uint64_t maxfilesize; /* compressed files will only be decompressed
* and scanned up to this size
*/
uint32_t maxreclevel; /* maximum recursion level for archives */
uint32_t maxfiles; /* maximum number of files to be scanned
* within a single archive
*/
/* This is for structured data detection. You can set the minimum
* number of occurences of an CC# or SSN before the system will
* generate a notification.
*/
uint32_t min_cc_count;
uint32_t min_ssn_count;
/* Roots table */
struct cli_matcher **root;
/* hash matcher for standard MD5 sigs */
struct cli_matcher *hm_hdb;
/* hash matcher for MD5 sigs for PE sections */
struct cli_matcher *hm_mdb;
/* hash matcher for whitelist db */
struct cli_matcher *hm_fp;
/* Container metadata */
struct cli_cdb *cdb;
/* Phishing .pdb and .wdb databases*/
struct regex_matcher *whitelist_matcher;
struct regex_matcher *domainlist_matcher;
struct phishcheck *phishcheck;
/* Dynamic configuration */
struct cli_dconf *dconf;
/* Filetype definitions */
struct cli_ftype *ftypes;
struct cli_ftype *ptypes;
/* Ignored signatures */
struct cli_matcher *ignored;
/* PUA categories (to be included or excluded) */
char *pua_cats;
/* Icon reference storage */
struct icon_matcher *iconcheck;
/* Negative cache storage */
struct CACHE *cache;
/* Database information from .info files */
struct cli_dbinfo *dbinfo;
/* Used for memory pools */
mpool_t *mempool;
/* crtmgr stuff */
crtmgr cmgr;
/* Callback(s) */
clcb_pre_cache cb_pre_cache;
clcb_pre_scan cb_pre_scan;
clcb_post_scan cb_post_scan;
clcb_sigload cb_sigload;
void *cb_sigload_ctx;
clcb_hash cb_hash;
clcb_meta cb_meta;
clcb_file_props cb_file_props;
void *cb_file_props_data;
/* Used for bytecode */
struct cli_all_bc bcs;
unsigned *hooks[_BC_LAST_HOOK - _BC_START_HOOKS];
unsigned hooks_cnt[_BC_LAST_HOOK - _BC_START_HOOKS];
unsigned hook_lsig_ids;
enum bytecode_security bytecode_security;
uint32_t bytecode_timeout;
enum bytecode_mode bytecode_mode;
/* Engine max settings */
uint64_t maxembeddedpe; /* max size to scan MSEXE for PE */
uint64_t maxhtmlnormalize; /* max size to normalize HTML */
uint64_t maxhtmlnotags; /* max size for scanning normalized HTML */
uint64_t maxscriptnormalize; /* max size to normalize scripts */
uint64_t maxziptypercg; /* max size to re-do zip filetype */
/* Statistics/intelligence gathering */
void *stats_data;
clcb_stats_add_sample cb_stats_add_sample;
clcb_stats_remove_sample cb_stats_remove_sample;
clcb_stats_decrement_count cb_stats_decrement_count;
clcb_stats_submit cb_stats_submit;
clcb_stats_flush cb_stats_flush;
clcb_stats_get_num cb_stats_get_num;
clcb_stats_get_size cb_stats_get_size;
clcb_stats_get_hostid cb_stats_get_hostid;
/* Raw disk image max settings */
uint32_t maxpartitions; /* max number of partitions to scan in a disk image */
/* Engine max settings */
uint32_t maxiconspe; /* max number of icons to scan for PE */
/* millisecond time limit for preclassification scanning */
uint32_t time_limit;
};
struct cl_settings {
/* don't store dboptions here; it needs to be provided to cl_load() and
* can be optionally obtained with cl_engine_get() or from the original
* settings stored by the application
*/
uint32_t ac_only;
uint32_t ac_mindepth;
uint32_t ac_maxdepth;
char *tmpdir;
uint32_t keeptmp;
uint64_t maxscansize;
uint64_t maxfilesize;
uint32_t maxreclevel;
uint32_t maxfiles;
uint32_t min_cc_count;
uint32_t min_ssn_count;
enum bytecode_security bytecode_security;
uint32_t bytecode_timeout;
enum bytecode_mode bytecode_mode;
char *pua_cats;
uint64_t engine_options;
/* callbacks */
clcb_pre_cache cb_pre_cache;
clcb_pre_scan cb_pre_scan;
clcb_post_scan cb_post_scan;
clcb_sigload cb_sigload;
void *cb_sigload_ctx;
clcb_msg cb_msg;
clcb_hash cb_hash;
clcb_meta cb_meta;
clcb_file_props cb_file_props;
void *cb_file_props_data;
/* Engine max settings */
uint64_t maxembeddedpe; /* max size to scan MSEXE for PE */
uint64_t maxhtmlnormalize; /* max size to normalize HTML */
uint64_t maxhtmlnotags; /* max size for scanning normalized HTML */
uint64_t maxscriptnormalize; /* max size to normalize scripts */
uint64_t maxziptypercg; /* max size to re-do zip filetype */
/* Statistics/intelligence gathering */
void *stats_data;
clcb_stats_add_sample cb_stats_add_sample;
clcb_stats_remove_sample cb_stats_remove_sample;
clcb_stats_decrement_count cb_stats_decrement_count;
clcb_stats_submit cb_stats_submit;
clcb_stats_flush cb_stats_flush;
clcb_stats_get_num cb_stats_get_num;
clcb_stats_get_size cb_stats_get_size;
clcb_stats_get_hostid cb_stats_get_hostid;
/* Raw disk image max settings */
uint32_t maxpartitions; /* max number of partitions to scan in a disk image */
/* Engine max settings */
uint32_t maxiconspe; /* max number of icons to scan for PE */
};
extern int (*cli_unrar_open)(int fd, const char *dirname, unrar_state_t *state);
extern int (*cli_unrar_extract_next_prepare)(unrar_state_t *state, const char *dirname);
extern int (*cli_unrar_extract_next)(unrar_state_t *state, const char *dirname);
extern void (*cli_unrar_close)(unrar_state_t *state);
extern int have_rar;
#define SCAN_ARCHIVE (ctx->options & CL_SCAN_ARCHIVE)
#define SCAN_MAIL (ctx->options & CL_SCAN_MAIL)
#define SCAN_OLE2 (ctx->options & CL_SCAN_OLE2)
#define SCAN_PDF (ctx->options & CL_SCAN_PDF)
#define SCAN_HTML (ctx->options & CL_SCAN_HTML)
#define SCAN_PE (ctx->options & CL_SCAN_PE)
#define SCAN_ELF (ctx->options & CL_SCAN_ELF)
#define SCAN_ALGO (ctx->options & CL_SCAN_ALGORITHMIC)
#define DETECT_ENCRYPTED (ctx->options & CL_SCAN_BLOCKENCRYPTED)
/* #define BLOCKMAX (ctx->options & CL_SCAN_BLOCKMAX) */
#define DETECT_BROKEN (ctx->options & CL_SCAN_BLOCKBROKEN)
#define BLOCK_MACROS (ctx->options & CL_SCAN_BLOCKMACROS)
#define SCAN_STRUCTURED (ctx->options & CL_SCAN_STRUCTURED)
#define SCAN_ALL (ctx->options & CL_SCAN_ALLMATCHES)
#define SCAN_SWF (ctx->options & CL_SCAN_SWF)
#define SCAN_PROPERTIES (ctx->options & CL_SCAN_FILE_PROPERTIES)
/* based on macros from A. Melnikoff */
#define cbswap16(v) (((v & 0xff) << 8) | (((v) >> 8) & 0xff))
#define cbswap32(v) ((((v) & 0x000000ff) << 24) | (((v) & 0x0000ff00) << 8) | \
(((v) & 0x00ff0000) >> 8) | (((v) & 0xff000000) >> 24))
#define cbswap64(v) ((((v) & 0x00000000000000ffULL) << 56) | \
(((v) & 0x000000000000ff00ULL) << 40) | \
(((v) & 0x0000000000ff0000ULL) << 24) | \
(((v) & 0x00000000ff000000ULL) << 8) | \
(((v) & 0x000000ff00000000ULL) >> 8) | \
(((v) & 0x0000ff0000000000ULL) >> 24) | \
(((v) & 0x00ff000000000000ULL) >> 40) | \
(((v) & 0xff00000000000000ULL) >> 56))
#ifndef HAVE_ATTRIB_PACKED
#define __attribute__(x)
#endif
#ifdef HAVE_PRAGMA_PACK
#pragma pack(1)
#endif
#ifdef HAVE_PRAGMA_PACK_HPPA
#pragma pack 1
#endif
union unaligned_64 {
uint64_t una_u64;
int64_t una_s64;
} __attribute__((packed));
union unaligned_32 {
uint32_t una_u32;
int32_t una_s32;
} __attribute__((packed));
union unaligned_16 {
uint16_t una_u16;
int16_t una_s16;
} __attribute__((packed));
struct unaligned_ptr {
void *ptr;
} __attribute__((packed));
#ifdef HAVE_PRAGMA_PACK
#pragma pack()
#endif
#ifdef HAVE_PRAGMA_PACK_HPPA
#pragma pack
#endif
#if WORDS_BIGENDIAN == 0
/* Little endian */
#define le16_to_host(v) (v)
#define le32_to_host(v) (v)
#define le64_to_host(v) (v)
#define be16_to_host(v) cbswap16(v)
#define be32_to_host(v) cbswap32(v)
#define be64_to_host(v) cbswap64(v)
#define cli_readint32(buff) (((const union unaligned_32 *)(buff))->una_s32)
#define cli_readint16(buff) (((const union unaligned_16 *)(buff))->una_s16)
#define cli_writeint32(offset, value) (((union unaligned_32 *)(offset))->una_u32=(uint32_t)(value))
#else
/* Big endian */
#define le16_to_host(v) cbswap16(v)
#define le32_to_host(v) cbswap32(v)
#define le64_to_host(v) cbswap64(v)
#define be16_to_host(v) (v)
#define be32_to_host(v) (v)
#define be64_to_host(v) (v)
static inline int32_t cli_readint32(const char *buff)
{
int32_t ret;
ret = buff[0] & 0xff;
ret |= (buff[1] & 0xff) << 8;
ret |= (buff[2] & 0xff) << 16;
ret |= (buff[3] & 0xff) << 24;
return ret;
}
static inline int16_t cli_readint16(const char *buff)
{
int16_t ret;
ret = buff[0] & 0xff;
ret |= (buff[1] & 0xff) << 8;
return ret;
}
static inline void cli_writeint32(char *offset, uint32_t value)
{
offset[0] = value & 0xff;
offset[1] = (value & 0xff00) >> 8;
offset[2] = (value & 0xff0000) >> 16;
offset[3] = (value & 0xff000000) >> 24;
}
#endif
void cli_append_virus(cli_ctx *ctx, const char *virname);
const char *cli_get_last_virus(const cli_ctx *ctx);
const char *cli_get_last_virus_str(const cli_ctx *ctx);
/* used by: spin, yc (C) aCaB */
#define __SHIFTBITS(a) (sizeof(a)<<3)
#define __SHIFTMASK(a) (__SHIFTBITS(a)-1)
#define CLI_ROL(a,b) a = ( a << ((b) & __SHIFTMASK(a)) ) | ( a >> ((__SHIFTBITS(a) - (b)) & __SHIFTMASK(a)) )
#define CLI_ROR(a,b) a = ( a >> ((b) & __SHIFTMASK(a)) ) | ( a << ((__SHIFTBITS(a) - (b)) & __SHIFTMASK(a)) )
/* Implementation independent sign-extended signed right shift */
#ifdef HAVE_SAR
#define CLI_SRS(n,s) ((n)>>(s))
#else
#define CLI_SRS(n,s) ((((n)>>(s)) ^ (1<<(sizeof(n)*8-1-s))) - (1<<(sizeof(n)*8-1-s)))
#endif
#define CLI_SAR(n,s) n = CLI_SRS(n,s)
#ifdef __GNUC__
void cli_warnmsg(const char *str, ...) __attribute__((format(printf, 1, 2)));
#else
void cli_warnmsg(const char *str, ...);
#endif
#ifdef __GNUC__
void cli_errmsg(const char *str, ...) __attribute__((format(printf, 1, 2)));
#else
void cli_errmsg(const char *str, ...);
#endif
#ifdef __GNUC__
void cli_infomsg(const cli_ctx* ctx, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
#else
void cli_infomsg(const cli_ctx* ctx, const char *fmt, ...);
#endif
void cli_logg_setup(const cli_ctx* ctx);
void cli_logg_unsetup(void);
/* tell compiler about branches that are very rarely taken,
* such as debug paths, and error paths */
#if (__GNUC__ >= 4) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 2)
#define UNLIKELY(cond) __builtin_expect(!!(cond), 0)
#define LIKELY(cond) __builtin_expect(!!(cond), 1)
#else
#define UNLIKELY(cond) (cond)
#define LIKELY(cond) (cond)
#endif
#ifdef __GNUC__
#define always_inline inline __attribute__((always_inline))
#define never_inline __attribute__((noinline))
#else
#define never_inline
#define always_inline inline
#endif
#if defined (__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
#define __hot__ __attribute__((hot))
#else
#define __hot__
#endif
#define cli_dbgmsg (!UNLIKELY(cli_debug_flag)) ? (void)0 : cli_dbgmsg_internal
#ifdef __GNUC__
void cli_dbgmsg_internal(const char *str, ...) __attribute__((format(printf, 1, 2)));
#else
void cli_dbgmsg_internal(const char *str, ...);
#endif
#ifdef HAVE_CLI_GETPAGESIZE
#undef HAVE_CLI_GETPAGESIZE
#endif
#ifdef _WIN32
static inline int cli_getpagesize(void) {
SYSTEM_INFO si;
GetSystemInfo(&si);
return si.dwPageSize;
}
#else /* ! _WIN32 */
#if HAVE_SYSCONF_SC_PAGESIZE
static inline int cli_getpagesize(void) { return sysconf(_SC_PAGESIZE); }
#define HAVE_CLI_GETPAGESIZE 1
#else
#if HAVE_GETPAGESIZE
static inline int cli_getpagesize(void) { return getpagesize(); }
#define HAVE_CLI_GETPAGESIZE 1
#endif /* HAVE_GETPAGESIZE */
#endif /* HAVE_SYSCONF_SC_PAGESIZE */
#endif /* _WIN32 */
void *cli_malloc(size_t nmemb);
void *cli_calloc(size_t nmemb, size_t size);
void *cli_realloc(void *ptr, size_t size);
void *cli_realloc2(void *ptr, size_t size);
char *cli_strdup(const char *s);
int cli_rmdirs(const char *dirname);
char *cli_hashstream(FILE *fs, unsigned char *digcpy, int type);
char *cli_hashfile(const char *filename, int type);
int cli_unlink(const char *pathname);
int cli_readn(int fd, void *buff, unsigned int count);
int cli_writen(int fd, const void *buff, unsigned int count);
const char *cli_gettmpdir(void);
char *cli_gentemp(const char *dir);
int cli_gentempfd(const char *dir, char **name, int *fd);
unsigned int cli_rndnum(unsigned int max);
int cli_filecopy(const char *src, const char *dest);
int cli_mapscan(fmap_t *map, off_t offset, size_t size, cli_ctx *ctx, cli_file_t type);
bitset_t *cli_bitset_init(void);
void cli_bitset_free(bitset_t *bs);
int cli_bitset_set(bitset_t *bs, unsigned long bit_offset);
int cli_bitset_test(bitset_t *bs, unsigned long bit_offset);
const char* cli_ctime(const time_t *timep, char *buf, const size_t bufsize);
int cli_checklimits(const char *, cli_ctx *, unsigned long, unsigned long, unsigned long);
int cli_updatelimits(cli_ctx *, unsigned long);
unsigned long cli_getsizelimit(cli_ctx *, unsigned long);
int cli_matchregex(const char *str, const char *regex);
void cli_qsort(void *a, size_t n, size_t es, int (*cmp)(const void *, const void *));
int cli_checktimelimit(cli_ctx *ctx);
/* symlink behaviour */
#define CLI_FTW_FOLLOW_FILE_SYMLINK 0x01
#define CLI_FTW_FOLLOW_DIR_SYMLINK 0x02
/* if the callback needs the stat */
#define CLI_FTW_NEED_STAT 0x04
/* remove leading/trailing slashes */
#define CLI_FTW_TRIM_SLASHES 0x08
#define CLI_FTW_STD (CLI_FTW_NEED_STAT | CLI_FTW_TRIM_SLASHES)
enum cli_ftw_reason {
visit_file,
visit_directory_toplev, /* this is a directory at toplevel of recursion */
error_mem, /* recommended to return CL_EMEM */
/* recommended to return CL_SUCCESS below */
error_stat,
warning_skipped_link,
warning_skipped_special,
warning_skipped_dir
};
/* wrap void*, so that we don't mix it with some other pointer */
struct cli_ftw_cbdata {
void *data;
};
/*
* return CL_BREAK to break out without an error, CL_SUCCESS to continue,
* or any CL_E* to break out due to error.
* The callback is responsible for freeing filename when it is done using it.
* Note that callback decides if directory traversal should continue
* after an error, we call the callback with reason == error,
* and if it returns CL_BREAK we break.
*/
typedef int (*cli_ftw_cb)(STATBUF *stat_buf, char *filename, const char *path, enum cli_ftw_reason reason, struct cli_ftw_cbdata *data);
/*
* returns 1 if the path should be skipped and 0 otherwise
* uses callback data
*/
typedef int (*cli_ftw_pathchk)(const char *path, struct cli_ftw_cbdata *data);
/*
* returns
* CL_SUCCESS if it traversed all files and subdirs
* CL_BREAK if traversal has stopped at some point
* CL_E* if error encountered during traversal and we had to break out
* This is regardless of virus found/not, that is the callback's job to store.
* Note that the callback may dispatch async the scan, so that when cli_ftw
* returns we don't know the infected/notinfected status of the directory yet!
* Due to this if the callback scans synchronously it should store the infected
* status in its cbdata.
* This works for both files and directories. It stats the path to determine
* which one it is.
* If it is a file, it simply calls the callback once, otherwise recurses.
*/
int cli_ftw(char *base, int flags, int maxdepth, cli_ftw_cb callback, struct cli_ftw_cbdata *data, cli_ftw_pathchk pathchk);
const char *cli_strerror(int errnum, char* buf, size_t len);
#endif
|