diff options
Diffstat (limited to 'contrib/file/cdf.c')
| -rw-r--r-- | contrib/file/cdf.c | 1235 |
1 files changed, 1235 insertions, 0 deletions
diff --git a/contrib/file/cdf.c b/contrib/file/cdf.c new file mode 100644 index 0000000..fd13bc0 --- /dev/null +++ b/contrib/file/cdf.c @@ -0,0 +1,1235 @@ +/*- + * Copyright (c) 2008 Christos Zoulas + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ +/* + * Parse composite document files, the format used in Microsoft Office + * document files before they switched to zipped xml. + * Info from: http://sc.openoffice.org/compdocfileformat.pdf + */ + +#include "file.h" + +#ifndef lint +FILE_RCSID("@(#)$File: cdf.c,v 1.30 2009/05/06 14:29:47 christos Exp $") +#endif + +#include <assert.h> +#ifdef CDF_DEBUG +#include <err.h> +#endif +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <time.h> +#include <ctype.h> + +#ifndef EFTYPE +#define EFTYPE EINVAL +#endif + +#include "cdf.h" + +#ifndef __arraycount +#define __arraycount(a) (sizeof(a) / sizeof(a[0])) +#endif + +#ifdef CDF_DEBUG +#define DPRINTF(a) printf a, fflush(stdout) +#else +#define DPRINTF(a) +#endif + +static union { + char s[4]; + uint32_t u; +} cdf_bo; + +#define NEED_SWAP (cdf_bo.u == (uint32_t)0x01020304) + +#define CDF_TOLE8(x) (NEED_SWAP ? cdf_tole8(x) : (uint64_t)(x)) +#define CDF_TOLE4(x) (NEED_SWAP ? cdf_tole4(x) : (uint32_t)(x)) +#define CDF_TOLE2(x) (NEED_SWAP ? cdf_tole2(x) : (uint16_t)(x)) + +/* + * swap a short + */ +uint16_t +cdf_tole2(uint16_t sv) +{ + uint16_t rv; + uint8_t *s = (uint8_t *)(void *)&sv; + uint8_t *d = (uint8_t *)(void *)&rv; + d[0] = s[1]; + d[1] = s[0]; + return rv; +} + +/* + * swap an int + */ +uint32_t +cdf_tole4(uint32_t sv) +{ + uint32_t rv; + uint8_t *s = (uint8_t *)(void *)&sv; + uint8_t *d = (uint8_t *)(void *)&rv; + d[0] = s[3]; + d[1] = s[2]; + d[2] = s[1]; + d[3] = s[0]; + return rv; +} + +/* + * swap a quad + */ +uint64_t +cdf_tole8(uint64_t sv) +{ + uint64_t rv; + uint8_t *s = (uint8_t *)(void *)&sv; + uint8_t *d = (uint8_t *)(void *)&rv; + d[0] = s[7]; + d[1] = s[6]; + d[2] = s[5]; + d[3] = s[4]; + d[4] = s[3]; + d[5] = s[2]; + d[6] = s[1]; + d[7] = s[0]; + return rv; +} + +#define CDF_UNPACK(a) \ + (void)memcpy(&(a), &buf[len], sizeof(a)), len += sizeof(a) +#define CDF_UNPACKA(a) \ + (void)memcpy((a), &buf[len], sizeof(a)), len += sizeof(a) + +void +cdf_swap_header(cdf_header_t *h) +{ + size_t i; + + h->h_magic = CDF_TOLE8(h->h_magic); + h->h_uuid[0] = CDF_TOLE8(h->h_uuid[0]); + h->h_uuid[1] = CDF_TOLE8(h->h_uuid[1]); + h->h_revision = CDF_TOLE2(h->h_revision); + h->h_version = CDF_TOLE2(h->h_version); + h->h_byte_order = CDF_TOLE2(h->h_byte_order); + h->h_sec_size_p2 = CDF_TOLE2(h->h_sec_size_p2); + h->h_short_sec_size_p2 = CDF_TOLE2(h->h_short_sec_size_p2); + h->h_num_sectors_in_sat = CDF_TOLE4(h->h_num_sectors_in_sat); + h->h_secid_first_directory = CDF_TOLE4(h->h_secid_first_directory); + h->h_min_size_standard_stream = + CDF_TOLE4(h->h_min_size_standard_stream); + h->h_secid_first_sector_in_short_sat = + CDF_TOLE4(h->h_secid_first_sector_in_short_sat); + h->h_num_sectors_in_short_sat = + CDF_TOLE4(h->h_num_sectors_in_short_sat); + h->h_secid_first_sector_in_master_sat = + CDF_TOLE4(h->h_secid_first_sector_in_master_sat); + h->h_num_sectors_in_master_sat = + CDF_TOLE4(h->h_num_sectors_in_master_sat); + for (i = 0; i < __arraycount(h->h_master_sat); i++) + h->h_master_sat[i] = CDF_TOLE4(h->h_master_sat[i]); +} + +void +cdf_unpack_header(cdf_header_t *h, char *buf) +{ + size_t i; + size_t len = 0; + + CDF_UNPACK(h->h_magic); + CDF_UNPACKA(h->h_uuid); + CDF_UNPACK(h->h_revision); + CDF_UNPACK(h->h_version); + CDF_UNPACK(h->h_byte_order); + CDF_UNPACK(h->h_sec_size_p2); + CDF_UNPACK(h->h_short_sec_size_p2); + CDF_UNPACKA(h->h_unused0); + CDF_UNPACK(h->h_num_sectors_in_sat); + CDF_UNPACK(h->h_secid_first_directory); + CDF_UNPACKA(h->h_unused1); + CDF_UNPACK(h->h_min_size_standard_stream); + CDF_UNPACK(h->h_secid_first_sector_in_short_sat); + CDF_UNPACK(h->h_num_sectors_in_short_sat); + CDF_UNPACK(h->h_secid_first_sector_in_master_sat); + CDF_UNPACK(h->h_num_sectors_in_master_sat); + for (i = 0; i < __arraycount(h->h_master_sat); i++) + CDF_UNPACK(h->h_master_sat[i]); +} + +void +cdf_swap_dir(cdf_directory_t *d) +{ + d->d_namelen = CDF_TOLE2(d->d_namelen); + d->d_left_child = CDF_TOLE4(d->d_left_child); + d->d_right_child = CDF_TOLE4(d->d_right_child); + d->d_storage = CDF_TOLE4(d->d_storage); + d->d_storage_uuid[0] = CDF_TOLE8(d->d_storage_uuid[0]); + d->d_storage_uuid[1] = CDF_TOLE8(d->d_storage_uuid[1]); + d->d_flags = CDF_TOLE4(d->d_flags); + d->d_created = CDF_TOLE8(d->d_created); + d->d_modified = CDF_TOLE8(d->d_modified); + d->d_stream_first_sector = CDF_TOLE4(d->d_stream_first_sector); + d->d_size = CDF_TOLE4(d->d_size); +} + +void +cdf_swap_class(cdf_classid_t *d) +{ + d->cl_dword = CDF_TOLE4(d->cl_dword); + d->cl_word[0] = CDF_TOLE2(d->cl_word[0]); + d->cl_word[1] = CDF_TOLE2(d->cl_word[1]); +} + +void +cdf_unpack_dir(cdf_directory_t *d, char *buf) +{ + size_t len = 0; + + CDF_UNPACKA(d->d_name); + CDF_UNPACK(d->d_namelen); + CDF_UNPACK(d->d_type); + CDF_UNPACK(d->d_color); + CDF_UNPACK(d->d_left_child); + CDF_UNPACK(d->d_right_child); + CDF_UNPACK(d->d_storage); + CDF_UNPACKA(d->d_storage_uuid); + CDF_UNPACK(d->d_flags); + CDF_UNPACK(d->d_created); + CDF_UNPACK(d->d_modified); + CDF_UNPACK(d->d_stream_first_sector); + CDF_UNPACK(d->d_size); + CDF_UNPACK(d->d_unused0); +} + +static int +cdf_check_stream_offset(const cdf_stream_t *sst, const void *p, size_t tail) +{ + const char *b = (const char *)sst->sst_tab; + const char *e = ((const char *)p) + tail; + if (e >= b && (size_t)(e - b) < sst->sst_dirlen * sst->sst_len) + return 0; + DPRINTF((stderr, "offset begin %p end %p %zu >= %zu\n", b, e, + (size_t)(e - b), sst->sst_dirlen * sst->sst_len)); + errno = EFTYPE; + return -1; +} + +static ssize_t +cdf_read(const cdf_info_t *info, off_t off, void *buf, size_t len) +{ + size_t siz = (size_t)off + len; + + if ((off_t)(off + len) != (off_t)siz) { + errno = EINVAL; + return -1; + } + + if (info->i_buf != NULL && info->i_len >= siz) { + (void)memcpy(buf, &info->i_buf[off], len); + return (ssize_t)len; + } + + if (info->i_fd == -1) + return -1; + + if (lseek(info->i_fd, off, SEEK_SET) == (off_t)-1) + return -1; + + if (read(info->i_fd, buf, len) != (ssize_t)len) + return -1; + + return (ssize_t)len; +} + +int +cdf_read_header(const cdf_info_t *info, cdf_header_t *h) +{ + char buf[512]; + + (void)memcpy(cdf_bo.s, "\01\02\03\04", 4); + if (cdf_read(info, (off_t)0, buf, sizeof(buf)) == -1) + return -1; + cdf_unpack_header(h, buf); + cdf_swap_header(h); + if (h->h_magic != CDF_MAGIC) { + DPRINTF(("Bad magic 0x%llx != 0x%llx\n", + (unsigned long long)h->h_magic, + (unsigned long long)CDF_MAGIC)); + goto out; + } + if (h->h_sec_size_p2 > 20) { + DPRINTF(("Bad sector size 0x%u\n", h->h_sec_size_p2)); + goto out; + } + if (h->h_short_sec_size_p2 > 20) { + DPRINTF(("Bad short sector size 0x%u\n", + h->h_short_sec_size_p2)); + goto out; + } + return 0; +out: + errno = EFTYPE; + return -1; +} + + +ssize_t +cdf_read_sector(const cdf_info_t *info, void *buf, size_t offs, size_t len, + const cdf_header_t *h, cdf_secid_t id) +{ + assert((size_t)CDF_SEC_SIZE(h) == len); + return cdf_read(info, (off_t)CDF_SEC_POS(h, id), + ((char *)buf) + offs, len); +} + +ssize_t +cdf_read_short_sector(const cdf_stream_t *sst, void *buf, size_t offs, + size_t len, const cdf_header_t *h, cdf_secid_t id) +{ + assert((size_t)CDF_SHORT_SEC_SIZE(h) == len); + (void)memcpy(((char *)buf) + offs, + ((const char *)sst->sst_tab) + CDF_SHORT_SEC_POS(h, id), len); + return len; +} + +/* + * Read the sector allocation table. + */ +int +cdf_read_sat(const cdf_info_t *info, cdf_header_t *h, cdf_sat_t *sat) +{ + size_t i, j, k; + size_t ss = CDF_SEC_SIZE(h); + cdf_secid_t *msa, mid, sec; + size_t nsatpersec = (ss / sizeof(mid)) - 1; + + for (i = 0; i < __arraycount(h->h_master_sat); i++) + if (h->h_master_sat[i] == CDF_SECID_FREE) + break; + +#define CDF_SEC_LIMIT (UINT32_MAX / (4 * ss)) + if (h->h_num_sectors_in_master_sat > CDF_SEC_LIMIT / nsatpersec || + i > CDF_SEC_LIMIT) { + DPRINTF(("Number of sectors in master SAT too big %u %zu\n", + h->h_num_sectors_in_master_sat, i)); + errno = EFTYPE; + return -1; + } + + sat->sat_len = h->h_num_sectors_in_master_sat * nsatpersec + i; + DPRINTF(("sat_len = %zu ss = %zu\n", sat->sat_len, ss)); + if ((sat->sat_tab = calloc(sat->sat_len, ss)) == NULL) + return -1; + + for (i = 0; i < __arraycount(h->h_master_sat); i++) { + if (h->h_master_sat[i] < 0) + break; + if (cdf_read_sector(info, sat->sat_tab, ss * i, ss, h, + h->h_master_sat[i]) != (ssize_t)ss) { + DPRINTF(("Reading sector %d", h->h_master_sat[i])); + goto out1; + } + } + + if ((msa = calloc(1, ss)) == NULL) + goto out1; + + mid = h->h_secid_first_sector_in_master_sat; + for (j = 0; j < h->h_num_sectors_in_master_sat; j++) { + if (mid < 0) + goto out; + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Reading master sector loop limit")); + errno = EFTYPE; + goto out2; + } + if (cdf_read_sector(info, msa, 0, ss, h, mid) != (ssize_t)ss) { + DPRINTF(("Reading master sector %d", mid)); + goto out2; + } + for (k = 0; k < nsatpersec; k++, i++) { + sec = CDF_TOLE4(msa[k]); + if (sec < 0) + goto out; + if (i >= sat->sat_len) { + DPRINTF(("Out of bounds reading MSA %u >= %u", + i, sat->sat_len)); + errno = EFTYPE; + goto out2; + } + if (cdf_read_sector(info, sat->sat_tab, ss * i, ss, h, + sec) != (ssize_t)ss) { + DPRINTF(("Reading sector %d", + CDF_TOLE4(msa[k]))); + goto out2; + } + } + mid = CDF_TOLE4(msa[nsatpersec]); + } +out: + sat->sat_len = i; + free(msa); + return 0; +out2: + free(msa); +out1: + free(sat->sat_tab); + return -1; +} + +size_t +cdf_count_chain(const cdf_sat_t *sat, cdf_secid_t sid, size_t size) +{ + size_t i, j; + cdf_secid_t maxsector = (cdf_secid_t)(sat->sat_len * size); + + DPRINTF(("Chain:")); + for (j = i = 0; sid >= 0; i++, j++) { + DPRINTF((" %d", sid)); + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Counting chain loop limit")); + errno = EFTYPE; + return (size_t)-1; + } + if (sid > maxsector) { + DPRINTF(("Sector %d > %d\n", sid, maxsector)); + errno = EFTYPE; + return (size_t)-1; + } + sid = CDF_TOLE4(sat->sat_tab[sid]); + } + DPRINTF(("\n")); + return i; +} + +int +cdf_read_long_sector_chain(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, cdf_secid_t sid, size_t len, cdf_stream_t *scn) +{ + size_t ss = CDF_SEC_SIZE(h), i, j; + ssize_t nr; + scn->sst_len = cdf_count_chain(sat, sid, ss); + scn->sst_dirlen = len; + + if (scn->sst_len == (size_t)-1) + return -1; + + scn->sst_tab = calloc(scn->sst_len, ss); + if (scn->sst_tab == NULL) + return -1; + + for (j = i = 0; sid >= 0; i++, j++) { + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Read long sector chain loop limit")); + errno = EFTYPE; + goto out; + } + if (i >= scn->sst_len) { + DPRINTF(("Out of bounds reading long sector chain " + "%u > %u\n", i, scn->sst_len)); + errno = EFTYPE; + goto out; + } + if ((nr = cdf_read_sector(info, scn->sst_tab, i * ss, ss, h, + sid)) != (ssize_t)ss) { + if (i == scn->sst_len - 1 && nr > 0) { + /* Last sector might be truncated */ + return 0; + } + DPRINTF(("Reading long sector chain %d", sid)); + goto out; + } + sid = CDF_TOLE4(sat->sat_tab[sid]); + } + return 0; +out: + free(scn->sst_tab); + return -1; +} + +int +cdf_read_short_sector_chain(const cdf_header_t *h, + const cdf_sat_t *ssat, const cdf_stream_t *sst, + cdf_secid_t sid, size_t len, cdf_stream_t *scn) +{ + size_t ss = CDF_SHORT_SEC_SIZE(h), i, j; + scn->sst_len = cdf_count_chain(ssat, sid, CDF_SEC_SIZE(h)); + scn->sst_dirlen = len; + + if (sst->sst_tab == NULL || scn->sst_len == (size_t)-1) + return -1; + + scn->sst_tab = calloc(scn->sst_len, ss); + if (scn->sst_tab == NULL) + return -1; + + for (j = i = 0; sid >= 0; i++, j++) { + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Read short sector chain loop limit")); + errno = EFTYPE; + goto out; + } + if (i >= scn->sst_len) { + DPRINTF(("Out of bounds reading short sector chain " + "%u > %u\n", i, scn->sst_len)); + errno = EFTYPE; + goto out; + } + if (cdf_read_short_sector(sst, scn->sst_tab, i * ss, ss, h, + sid) != (ssize_t)ss) { + DPRINTF(("Reading short sector chain %d", sid)); + goto out; + } + sid = CDF_TOLE4(ssat->sat_tab[sid]); + } + return 0; +out: + free(scn->sst_tab); + return -1; +} + +int +cdf_read_sector_chain(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, const cdf_sat_t *ssat, const cdf_stream_t *sst, + cdf_secid_t sid, size_t len, cdf_stream_t *scn) +{ + + if (len < h->h_min_size_standard_stream) + return cdf_read_short_sector_chain(h, ssat, sst, sid, len, + scn); + else + return cdf_read_long_sector_chain(info, h, sat, sid, len, scn); +} + +int +cdf_read_dir(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, cdf_dir_t *dir) +{ + size_t i, j; + size_t ss = CDF_SEC_SIZE(h), ns, nd; + char *buf; + cdf_secid_t sid = h->h_secid_first_directory; + + ns = cdf_count_chain(sat, sid, ss); + if (ns == (size_t)-1) + return -1; + + nd = ss / CDF_DIRECTORY_SIZE; + + dir->dir_len = ns * nd; + dir->dir_tab = calloc(dir->dir_len, sizeof(dir->dir_tab[0])); + if (dir->dir_tab == NULL) + return -1; + + if ((buf = malloc(ss)) == NULL) { + free(dir->dir_tab); + return -1; + } + + for (j = i = 0; i < ns; i++, j++) { + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Read dir loop limit")); + errno = EFTYPE; + goto out; + } + if (cdf_read_sector(info, buf, 0, ss, h, sid) != (ssize_t)ss) { + DPRINTF(("Reading directory sector %d", sid)); + goto out; + } + for (j = 0; j < nd; j++) { + cdf_unpack_dir(&dir->dir_tab[i * nd + j], + &buf[j * CDF_DIRECTORY_SIZE]); + } + sid = CDF_TOLE4(sat->sat_tab[sid]); + } + if (NEED_SWAP) + for (i = 0; i < dir->dir_len; i++) + cdf_swap_dir(&dir->dir_tab[i]); + free(buf); + return 0; +out: + free(dir->dir_tab); + free(buf); + return -1; +} + + +int +cdf_read_ssat(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, cdf_sat_t *ssat) +{ + size_t i, j; + size_t ss = CDF_SEC_SIZE(h); + cdf_secid_t sid = h->h_secid_first_sector_in_short_sat; + + ssat->sat_len = cdf_count_chain(sat, sid, CDF_SEC_SIZE(h)); + if (ssat->sat_len == (size_t)-1) + return -1; + + ssat->sat_tab = calloc(ssat->sat_len, ss); + if (ssat->sat_tab == NULL) + return -1; + + for (j = i = 0; sid >= 0; i++, j++) { + if (j >= CDF_LOOP_LIMIT) { + DPRINTF(("Read short sat sector loop limit")); + errno = EFTYPE; + goto out; + } + if (i >= ssat->sat_len) { + DPRINTF(("Out of bounds reading short sector chain " + "%u > %u\n", i, ssat->sat_len)); + errno = EFTYPE; + goto out; + } + if (cdf_read_sector(info, ssat->sat_tab, i * ss, ss, h, sid) != + (ssize_t)ss) { + DPRINTF(("Reading short sat sector %d", sid)); + goto out; + } + sid = CDF_TOLE4(sat->sat_tab[sid]); + } + return 0; +out: + free(ssat->sat_tab); + return -1; +} + +int +cdf_read_short_stream(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, const cdf_dir_t *dir, cdf_stream_t *scn) +{ + size_t i; + const cdf_directory_t *d; + + for (i = 0; i < dir->dir_len; i++) + if (dir->dir_tab[i].d_type == CDF_DIR_TYPE_ROOT_STORAGE) + break; + + /* If the it is not there, just fake it; some docs don't have it */ + if (i == dir->dir_len) + goto out; + d = &dir->dir_tab[i]; + + /* If the it is not there, just fake it; some docs don't have it */ + if (d->d_stream_first_sector < 0) + goto out; + + return cdf_read_long_sector_chain(info, h, sat, + d->d_stream_first_sector, d->d_size, scn); +out: + scn->sst_tab = NULL; + scn->sst_len = 0; + scn->sst_dirlen = 0; + return 0; +} + +static int +cdf_namecmp(const char *d, const uint16_t *s, size_t l) +{ + for (; l--; d++, s++) + if (*d != CDF_TOLE2(*s)) + return (unsigned char)*d - CDF_TOLE2(*s); + return 0; +} + +int +cdf_read_summary_info(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, const cdf_sat_t *ssat, const cdf_stream_t *sst, + const cdf_dir_t *dir, cdf_stream_t *scn) +{ + size_t i; + const cdf_directory_t *d; + static const char name[] = "\05SummaryInformation"; + + for (i = 0; i < dir->dir_len; i++) + if (dir->dir_tab[i].d_type == CDF_DIR_TYPE_USER_STREAM && + cdf_namecmp(name, dir->dir_tab[i].d_name, sizeof(name)) + == 0) + break; + + if (i == dir->dir_len) { + DPRINTF(("Cannot find summary information section\n")); + errno = EFTYPE; + return -1; + } + d = &dir->dir_tab[i]; + return cdf_read_sector_chain(info, h, sat, ssat, sst, + d->d_stream_first_sector, d->d_size, scn); +} + +int +cdf_read_property_info(const cdf_stream_t *sst, uint32_t offs, + cdf_property_info_t **info, size_t *count, size_t *maxcount) +{ + const cdf_section_header_t *shp; + cdf_section_header_t sh; + const uint32_t *p, *q, *e; + int16_t s16; + int32_t s32; + uint32_t u32; + int64_t s64; + uint64_t u64; + cdf_timestamp_t tp; + size_t i, o, nelements, j; + cdf_property_info_t *inp; + + if (offs > UINT32_MAX / 4) { + errno = EFTYPE; + goto out; + } + shp = (const void *)((const char *)sst->sst_tab + offs); + if (cdf_check_stream_offset(sst, shp, sizeof(*shp)) == -1) + goto out; + sh.sh_len = CDF_TOLE4(shp->sh_len); +#define CDF_SHLEN_LIMIT (UINT32_MAX / 8) + if (sh.sh_len > CDF_SHLEN_LIMIT) { + errno = EFTYPE; + goto out; + } + sh.sh_properties = CDF_TOLE4(shp->sh_properties); +#define CDF_PROP_LIMIT (UINT32_MAX / (4 * sizeof(*inp))) + if (sh.sh_properties > CDF_PROP_LIMIT) + goto out; + DPRINTF(("section len: %u properties %u\n", sh.sh_len, + sh.sh_properties)); + if (*maxcount) { + if (*maxcount > CDF_PROP_LIMIT) + goto out; + *maxcount += sh.sh_properties; + inp = realloc(*info, *maxcount * sizeof(*inp)); + } else { + *maxcount = sh.sh_properties; + inp = malloc(*maxcount * sizeof(*inp)); + } + if (inp == NULL) + goto out; + *info = inp; + inp += *count; + *count += sh.sh_properties; + p = (const void *)((const char *)sst->sst_tab + offs + sizeof(sh)); + e = (const void *)(((const char *)shp) + sh.sh_len); + if (cdf_check_stream_offset(sst, e, 0) == -1) + goto out; + for (i = 0; i < sh.sh_properties; i++) { + q = (const uint32_t *)((const char *)p + + CDF_TOLE4(p[(i << 1) + 1])) - 2; + if (q > e) { + DPRINTF(("Ran of the end %p > %p\n", q, e)); + goto out; + } + inp[i].pi_id = CDF_TOLE4(p[i << 1]); + inp[i].pi_type = CDF_TOLE4(q[0]); + DPRINTF(("%d) id=%x type=%x offs=%x\n", i, inp[i].pi_id, + inp[i].pi_type, (const char *)q - (const char *)p)); + if (inp[i].pi_type & CDF_VECTOR) { + nelements = CDF_TOLE4(q[1]); + o = 2; + } else { + nelements = 1; + o = 1; + } + if (inp[i].pi_type & (CDF_ARRAY|CDF_BYREF|CDF_RESERVED)) + goto unknown; + switch (inp[i].pi_type & CDF_TYPEMASK) { + case CDF_EMPTY: + break; + case CDF_SIGNED16: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&s16, &q[o], sizeof(s16)); + inp[i].pi_s16 = CDF_TOLE2(s16); + break; + case CDF_SIGNED32: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&s32, &q[o], sizeof(s32)); + inp[i].pi_s32 = CDF_TOLE4(s32); + break; + case CDF_BOOL: + case CDF_UNSIGNED32: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&u32, &q[o], sizeof(u32)); + inp[i].pi_u32 = CDF_TOLE4(u32); + break; + case CDF_SIGNED64: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&s64, &q[o], sizeof(s64)); + inp[i].pi_s64 = CDF_TOLE4(s64); + break; + case CDF_UNSIGNED64: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&u64, &q[o], sizeof(u64)); + inp[i].pi_u64 = CDF_TOLE4(u64); + break; + case CDF_LENGTH32_STRING: + if (nelements > 1) { + size_t nelem = inp - *info; + if (*maxcount > CDF_PROP_LIMIT + || nelements > CDF_PROP_LIMIT) + goto out; + *maxcount += nelements; + inp = realloc(*info, *maxcount * sizeof(*inp)); + if (inp == NULL) + goto out; + *info = inp; + inp = *info + nelem; + } + DPRINTF(("nelements = %d\n", nelements)); + for (j = 0; j < nelements; j++, i++) { + uint32_t l = CDF_TOLE4(q[o]); + inp[i].pi_str.s_len = l; + inp[i].pi_str.s_buf = (const char *)(&q[o+1]); + DPRINTF(("l = %d, r = %d, s = %s\n", l, + CDF_ROUND(l, sizeof(l)), + inp[i].pi_str.s_buf)); + l = 4 + CDF_ROUND(l, sizeof(l)); + o += l >> 2; + } + i--; + break; + case CDF_FILETIME: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + (void)memcpy(&tp, &q[o], sizeof(tp)); + inp[i].pi_tp = CDF_TOLE8(tp); + break; + case CDF_CLIPBOARD: + if (inp[i].pi_type & CDF_VECTOR) + goto unknown; + break; + default: + unknown: + DPRINTF(("Don't know how to deal with %x\n", + inp[i].pi_type)); + goto out; + } + } + return 0; +out: + free(*info); + return -1; +} + +int +cdf_unpack_summary_info(const cdf_stream_t *sst, cdf_summary_info_header_t *ssi, + cdf_property_info_t **info, size_t *count) +{ + size_t i, maxcount; + const cdf_summary_info_header_t *si = sst->sst_tab; + const cdf_section_declaration_t *sd = (const void *) + ((const char *)sst->sst_tab + CDF_SECTION_DECLARATION_OFFSET); + + if (cdf_check_stream_offset(sst, si, sizeof(*si)) == -1 || + cdf_check_stream_offset(sst, sd, sizeof(*sd)) == -1) + return -1; + ssi->si_byte_order = CDF_TOLE2(si->si_byte_order); + ssi->si_os_version = CDF_TOLE2(si->si_os_version); + ssi->si_os = CDF_TOLE2(si->si_os); + ssi->si_class = si->si_class; + cdf_swap_class(&ssi->si_class); + ssi->si_count = CDF_TOLE2(si->si_count); + *count = 0; + maxcount = 0; + *info = NULL; + for (i = 0; i < CDF_TOLE4(si->si_count); i++) { + if (i >= CDF_LOOP_LIMIT) { + DPRINTF(("Unpack summary info loop limit")); + errno = EFTYPE; + return -1; + } + if (cdf_read_property_info(sst, CDF_TOLE4(sd->sd_offset), + info, count, &maxcount) == -1) + return -1; + } + return 0; +} + + + +int +cdf_print_classid(char *buf, size_t buflen, const cdf_classid_t *id) +{ + return snprintf(buf, buflen, "%.8x-%.4x-%.4x-%.2x%.2x-" + "%.2x%.2x%.2x%.2x%.2x%.2x", id->cl_dword, id->cl_word[0], + id->cl_word[1], id->cl_two[0], id->cl_two[1], id->cl_six[0], + id->cl_six[1], id->cl_six[2], id->cl_six[3], id->cl_six[4], + id->cl_six[5]); +} + +static const struct { + uint32_t v; + const char *n; +} vn[] = { + { CDF_PROPERTY_CODE_PAGE, "Code page" }, + { CDF_PROPERTY_TITLE, "Title" }, + { CDF_PROPERTY_SUBJECT, "Subject" }, + { CDF_PROPERTY_AUTHOR, "Author" }, + { CDF_PROPERTY_KEYWORDS, "Keywords" }, + { CDF_PROPERTY_COMMENTS, "Comments" }, + { CDF_PROPERTY_TEMPLATE, "Template" }, + { CDF_PROPERTY_LAST_SAVED_BY, "Last Saved By" }, + { CDF_PROPERTY_REVISION_NUMBER, "Revision Number" }, + { CDF_PROPERTY_TOTAL_EDITING_TIME, "Total Editing Time" }, + { CDF_PROPERTY_LAST_PRINTED, "Last Printed" }, + { CDF_PROPERTY_CREATE_TIME, "Create Time/Date" }, + { CDF_PROPERTY_LAST_SAVED_TIME, "Last Saved Time/Date" }, + { CDF_PROPERTY_NUMBER_OF_PAGES, "Number of Pages" }, + { CDF_PROPERTY_NUMBER_OF_WORDS, "Number of Words" }, + { CDF_PROPERTY_NUMBER_OF_CHARACTERS, "Number of Characters" }, + { CDF_PROPERTY_THUMBNAIL, "Thumbnail" }, + { CDF_PROPERTY_NAME_OF_APPLICATION, "Name of Creating Application" }, + { CDF_PROPERTY_SECURITY, "Security" }, + { CDF_PROPERTY_LOCALE_ID, "Locale ID" }, +}; + +int +cdf_print_property_name(char *buf, size_t bufsiz, uint32_t p) +{ + size_t i; + + for (i = 0; i < __arraycount(vn); i++) + if (vn[i].v == p) + return snprintf(buf, bufsiz, "%s", vn[i].n); + return snprintf(buf, bufsiz, "0x%x", p); +} + +int +cdf_print_elapsed_time(char *buf, size_t bufsiz, cdf_timestamp_t ts) +{ + size_t len = 0; + int days, hours, mins, secs; + + ts /= CDF_TIME_PREC; + secs = ts % 60; + ts /= 60; + mins = ts % 60; + ts /= 60; + hours = ts % 24; + ts /= 24; + days = ts; + + if (days) { + len += snprintf(buf + len, bufsiz - len, "%dd+", days); + if (len >= bufsiz) + return len; + } + + if (days || hours) { + len += snprintf(buf + len, bufsiz - len, "%.2d:", hours); + if (len >= bufsiz) + return len; + } + + len += snprintf(buf + len, bufsiz - len, "%.2d:", mins); + if (len >= bufsiz) + return len; + + len += snprintf(buf + len, bufsiz - len, "%.2d", secs); + return len; +} + + +#ifdef CDF_DEBUG +void +cdf_dump_header(const cdf_header_t *h) +{ + size_t i; + +#define DUMP(a, b) (void)fprintf(stderr, "%40.40s = " a "\n", # b, h->h_ ## b) +#define DUMP2(a, b) (void)fprintf(stderr, "%40.40s = " a " (" a ")\n", # b, \ + h->h_ ## b, 1 << h->h_ ## b) + DUMP("%d", revision); + DUMP("%d", version); + DUMP("0x%x", byte_order); + DUMP2("%d", sec_size_p2); + DUMP2("%d", short_sec_size_p2); + DUMP("%d", num_sectors_in_sat); + DUMP("%d", secid_first_directory); + DUMP("%d", min_size_standard_stream); + DUMP("%d", secid_first_sector_in_short_sat); + DUMP("%d", num_sectors_in_short_sat); + DUMP("%d", secid_first_sector_in_master_sat); + DUMP("%d", num_sectors_in_master_sat); + for (i = 0; i < __arraycount(h->h_master_sat); i++) { + if (h->h_master_sat[i] == CDF_SECID_FREE) + break; + (void)fprintf(stderr, "%35.35s[%.3zu] = %d\n", + "master_sat", i, h->h_master_sat[i]); + } +} + +void +cdf_dump_sat(const char *prefix, const cdf_sat_t *sat, size_t size) +{ + size_t i, j, s = size / sizeof(cdf_secid_t); + + for (i = 0; i < sat->sat_len; i++) { + (void)fprintf(stderr, "%s[%zu]:\n%.6d: ", prefix, i, i * s); + for (j = 0; j < s; j++) { + (void)fprintf(stderr, "%5d, ", + CDF_TOLE4(sat->sat_tab[s * i + j])); + if ((j + 1) % 10 == 0) + (void)fprintf(stderr, "\n%.6d: ", + i * s + j + 1); + } + (void)fprintf(stderr, "\n"); + } +} + +void +cdf_dump(void *v, size_t len) +{ + size_t i, j; + unsigned char *p = v; + char abuf[16]; + (void)fprintf(stderr, "%.4x: ", 0); + for (i = 0, j = 0; i < len; i++, p++) { + (void)fprintf(stderr, "%.2x ", *p); + abuf[j++] = isprint(*p) ? *p : '.'; + if (j == 16) { + j = 0; + abuf[15] = '\0'; + (void)fprintf(stderr, "%s\n%.4x: ", abuf, i + 1); + } + } + (void)fprintf(stderr, "\n"); +} + +void +cdf_dump_stream(const cdf_header_t *h, const cdf_stream_t *sst) +{ + size_t ss = sst->sst_dirlen < h->h_min_size_standard_stream ? + CDF_SHORT_SEC_SIZE(h) : CDF_SEC_SIZE(h); + cdf_dump(sst->sst_tab, ss * sst->sst_len); +} + +void +cdf_dump_dir(const cdf_info_t *info, const cdf_header_t *h, + const cdf_sat_t *sat, const cdf_sat_t *ssat, const cdf_stream_t *sst, + const cdf_dir_t *dir) +{ + size_t i, j; + cdf_directory_t *d; + char name[__arraycount(d->d_name)]; + cdf_stream_t scn; + struct timespec ts; + + static const char *types[] = { "empty", "user storage", + "user stream", "lockbytes", "property", "root storage" }; + + for (i = 0; i < dir->dir_len; i++) { + d = &dir->dir_tab[i]; + for (j = 0; j < sizeof(name); j++) + name[j] = (char)CDF_TOLE2(d->d_name[j]); + (void)fprintf(stderr, "Directory %zu: %s\n", i, name); + if (d->d_type < __arraycount(types)) + (void)fprintf(stderr, "Type: %s\n", types[d->d_type]); + else + (void)fprintf(stderr, "Type: %d\n", d->d_type); + (void)fprintf(stderr, "Color: %s\n", + d->d_color ? "black" : "red"); + (void)fprintf(stderr, "Left child: %d\n", d->d_left_child); + (void)fprintf(stderr, "Right child: %d\n", d->d_right_child); + (void)fprintf(stderr, "Flags: 0x%x\n", d->d_flags); + cdf_timestamp_to_timespec(&ts, d->d_created); + (void)fprintf(stderr, "Created %s", ctime(&ts.tv_sec)); + cdf_timestamp_to_timespec(&ts, d->d_modified); + (void)fprintf(stderr, "Modified %s", ctime(&ts.tv_sec)); + (void)fprintf(stderr, "Stream %d\n", d->d_stream_first_sector); + (void)fprintf(stderr, "Size %d\n", d->d_size); + switch (d->d_type) { + case CDF_DIR_TYPE_USER_STORAGE: + (void)fprintf(stderr, "Storage: %d\n", d->d_storage); + break; + case CDF_DIR_TYPE_USER_STREAM: + if (sst == NULL) + break; + if (cdf_read_sector_chain(info, h, sat, ssat, sst, + d->d_stream_first_sector, d->d_size, &scn) == -1) { + warn("Can't read stream for %s at %d len %d", + name, d->d_stream_first_sector, d->d_size); + break; + } + cdf_dump_stream(h, &scn); + free(scn.sst_tab); + break; + default: + break; + } + + } +} + +void +cdf_dump_property_info(const cdf_property_info_t *info, size_t count) +{ + cdf_timestamp_t tp; + struct timespec ts; + char buf[64]; + size_t i; + + for (i = 0; i < count; i++) { + cdf_print_property_name(buf, sizeof(buf), info[i].pi_id); + (void)fprintf(stderr, "%zu) %s: ", i, buf); + switch (info[i].pi_type) { + case CDF_SIGNED16: + (void)fprintf(stderr, "signed 16 [%hd]\n", + info[i].pi_s16); + break; + case CDF_SIGNED32: + (void)fprintf(stderr, "signed 32 [%d]\n", + info[i].pi_s32); + break; + case CDF_UNSIGNED32: + (void)fprintf(stderr, "unsigned 32 [%u]\n", + info[i].pi_u32); + break; + case CDF_LENGTH32_STRING: + (void)fprintf(stderr, "string %u [%.*s]\n", + info[i].pi_str.s_len, + info[i].pi_str.s_len, info[i].pi_str.s_buf); + break; + case CDF_FILETIME: + tp = info[i].pi_tp; + if (tp < 1000000000000000LL) { + cdf_print_elapsed_time(buf, sizeof(buf), tp); + (void)fprintf(stderr, "timestamp %s\n", buf); + } else { + cdf_timestamp_to_timespec(&ts, tp); + (void)fprintf(stderr, "timestamp %s", + ctime(&ts.tv_sec)); + } + break; + case CDF_CLIPBOARD: + (void)fprintf(stderr, "CLIPBOARD %u\n", info[i].pi_u32); + break; + default: + DPRINTF(("Don't know how to deal with %x\n", + info[i].pi_type)); + break; + } + } +} + + +void +cdf_dump_summary_info(const cdf_header_t *h, const cdf_stream_t *sst) +{ + char buf[128]; + cdf_summary_info_header_t ssi; + cdf_property_info_t *info; + size_t count; + + (void)&h; + if (cdf_unpack_summary_info(sst, &ssi, &info, &count) == -1) + return; + (void)fprintf(stderr, "Endian: %x\n", ssi.si_byte_order); + (void)fprintf(stderr, "Os Version %d.%d\n", ssi.si_os_version & 0xff, + ssi.si_os_version >> 8); + (void)fprintf(stderr, "Os %d\n", ssi.si_os); + cdf_print_classid(buf, sizeof(buf), &ssi.si_class); + (void)fprintf(stderr, "Class %s\n", buf); + (void)fprintf(stderr, "Count %d\n", ssi.si_count); + cdf_dump_property_info(info, count); + free(info); +} + +#endif + +#ifdef TEST +int +main(int argc, char *argv[]) +{ + int i; + cdf_header_t h; + cdf_sat_t sat, ssat; + cdf_stream_t sst, scn; + cdf_dir_t dir; + cdf_info_t info; + + if (argc < 2) { + (void)fprintf(stderr, "Usage: %s <filename>\n", getprogname()); + return -1; + } + + info.i_buf = NULL; + info.i_len = 0; + for (i = 1; i < argc; i++) { + if ((info.i_fd = open(argv[1], O_RDONLY)) == -1) + err(1, "Cannot open `%s'", argv[1]); + + if (cdf_read_header(&info, &h) == -1) + err(1, "Cannot read header"); +#ifdef CDF_DEBUG + cdf_dump_header(&h); +#endif + + if (cdf_read_sat(&info, &h, &sat) == -1) + err(1, "Cannot read sat"); +#ifdef CDF_DEBUG + cdf_dump_sat("SAT", &sat, CDF_SEC_SIZE(&h)); +#endif + + if (cdf_read_ssat(&info, &h, &sat, &ssat) == -1) + err(1, "Cannot read ssat"); +#ifdef CDF_DEBUG + cdf_dump_sat("SSAT", &h, &ssat, CDF_SHORT_SEC_SIZE(&h)); +#endif + + if (cdf_read_dir(&info, &h, &sat, &dir) == -1) + err(1, "Cannot read dir"); + + if (cdf_read_short_stream(&info, &h, &sat, &dir, &sst) == -1) + err(1, "Cannot read short stream"); +#ifdef CDF_DEBUG + cdf_dump_stream(&h, &sst); +#endif + +#ifdef CDF_DEBUG + cdf_dump_dir(&info, &h, &sat, &ssat, &sst, &dir); +#endif + + + if (cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir, + &scn) == -1) + err(1, "Cannot read summary info"); +#ifdef CDF_DEBUG + cdf_dump_summary_info(&h, &scn); +#endif + + (void)close(info.i_fd); + } + + return 0; +} +#endif |
