diff options
Diffstat (limited to 'contrib/file/src/cdf.c')
| -rw-r--r-- | contrib/file/src/cdf.c | 115 |
1 files changed, 108 insertions, 7 deletions
diff --git a/contrib/file/src/cdf.c b/contrib/file/src/cdf.c index 106fc7a..9e3cf9f 100644 --- a/contrib/file/src/cdf.c +++ b/contrib/file/src/cdf.c @@ -35,7 +35,7 @@ #include "file.h" #ifndef lint -FILE_RCSID("@(#)$File: cdf.c,v 1.63 2014/06/09 13:04:37 christos Exp $") +FILE_RCSID("@(#)$File: cdf.c,v 1.69 2014/12/04 15:56:46 christos Exp $") #endif #include <assert.h> @@ -73,6 +73,8 @@ static union { #define CDF_TOLE8(x) ((uint64_t)(NEED_SWAP ? _cdf_tole8(x) : (uint64_t)(x))) #define CDF_TOLE4(x) ((uint32_t)(NEED_SWAP ? _cdf_tole4(x) : (uint32_t)(x))) #define CDF_TOLE2(x) ((uint16_t)(NEED_SWAP ? _cdf_tole2(x) : (uint16_t)(x))) +#define CDF_TOLE(x) (sizeof(x) == 2 ? CDF_TOLE2(x) : (sizeof(x) == 4 ? \ + CDF_TOLE4(x) : CDF_TOLE8(x))) #define CDF_GETUINT32(x, y) cdf_getuint32(x, y) @@ -461,6 +463,12 @@ cdf_count_chain(const cdf_sat_t *sat, cdf_secid_t sid, size_t size) / sizeof(maxsector)); DPRINTF(("Chain:")); + if (sid == CDF_SECID_END_OF_CHAIN) { + /* 0-length chain. */ + DPRINTF((" empty\n")); + return 0; + } + for (j = i = 0; sid >= 0; i++, j++) { DPRINTF((" %d", sid)); if (j >= CDF_LOOP_LIMIT) { @@ -817,13 +825,18 @@ cdf_read_property_info(const cdf_stream_t *sst, const cdf_header_t *h, goto out; for (i = 0; i < sh.sh_properties; i++) { size_t tail = (i << 1) + 1; + size_t ofs; if (cdf_check_stream_offset(sst, h, p, tail * sizeof(uint32_t), __LINE__) == -1) goto out; - size_t ofs = CDF_GETUINT32(p, tail); + ofs = CDF_GETUINT32(p, tail); q = (const uint8_t *)(const void *) ((const char *)(const void *)p + ofs - 2 * sizeof(uint32_t)); + if (q < p) { + DPRINTF(("Wrapped around %p < %p\n", q, p)); + goto out; + } if (q > e) { DPRINTF(("Ran of the end %p > %p\n", q, e)); goto out; @@ -985,6 +998,54 @@ cdf_unpack_summary_info(const cdf_stream_t *sst, const cdf_header_t *h, } +#define extract_catalog_field(f, l) \ + memcpy(&ce[i].f, b + (l), sizeof(ce[i].f)); \ + ce[i].f = CDF_TOLE(ce[i].f) + +int +cdf_unpack_catalog(const cdf_header_t *h, const cdf_stream_t *sst, + cdf_catalog_t **cat) +{ + size_t ss = sst->sst_dirlen < h->h_min_size_standard_stream ? + CDF_SHORT_SEC_SIZE(h) : CDF_SEC_SIZE(h); + const char *b = CAST(const char *, sst->sst_tab); + const char *eb = b + ss * sst->sst_len; + size_t nr, i, k; + cdf_catalog_entry_t *ce; + uint16_t reclen; + const uint16_t *np; + + for (nr = 0; b < eb; nr++) { + memcpy(&reclen, b, sizeof(reclen)); + reclen = CDF_TOLE2(reclen); + if (reclen == 0) + break; + b += reclen; + } + *cat = CAST(cdf_catalog_t *, + malloc(sizeof(cdf_catalog_t) + nr * sizeof(*ce))); + (*cat)->cat_num = nr; + ce = (*cat)->cat_e; + b = CAST(const char *, sst->sst_tab); + for (i = 0; i < nr; i++) { + extract_catalog_field(ce_namlen, 0); + extract_catalog_field(ce_num, 2); + extract_catalog_field(ce_timestamp, 6); + reclen = ce[i].ce_namlen; + ce[i].ce_namlen = + sizeof(ce[i].ce_name) / sizeof(ce[i].ce_name[0]) - 1; + if (ce[i].ce_namlen > reclen - 14) + ce[i].ce_namlen = reclen - 14; + np = CAST(const uint16_t *, (b + 16)); + for (k = 0; k < ce[i].ce_namlen; k++) { + ce[i].ce_name[k] = np[k]; + CDF_TOLE2(ce[i].ce_name[k]); + } + ce[i].ce_name[ce[i].ce_namlen] = 0; + b += reclen; + } + return 0; +} int cdf_print_classid(char *buf, size_t buflen, const cdf_classid_t *id) @@ -1068,6 +1129,15 @@ cdf_print_elapsed_time(char *buf, size_t bufsiz, cdf_timestamp_t ts) return len; } +char * +cdf_u16tos8(char *buf, size_t len, const uint16_t *p) +{ + size_t i; + for (i = 0; i < len && p[i]; i++) + buf[i] = (char)p[i]; + buf[i] = '\0'; + return buf; +} #ifdef CDF_DEBUG void @@ -1093,7 +1163,7 @@ cdf_dump_header(const cdf_header_t *h) 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", + (void)fprintf(stderr, "%35.35s[%.3" SIZE_T_FORMAT "u] = %d\n", "master_sat", i, h->h_master_sat[i]); } } @@ -1288,7 +1358,7 @@ cdf_dump_summary_info(const cdf_header_t *h, const cdf_stream_t *sst) 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); + 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); @@ -1297,6 +1367,27 @@ cdf_dump_summary_info(const cdf_header_t *h, const cdf_stream_t *sst) free(info); } + +void +cdf_dump_catalog(const cdf_header_t *h, const cdf_stream_t *sst) +{ + cdf_catalog_t *cat; + cdf_unpack_catalog(h, sst, &cat); + const cdf_catalog_entry_t *ce = cat->cat_e; + struct timespec ts; + char tbuf[64], sbuf[256]; + size_t i; + + printf("Catalog:\n"); + for (i = 0; i < cat->cat_num; i++) { + cdf_timestamp_to_timespec(&ts, ce[i].ce_timestamp); + printf("\t%d %s %s", ce[i].ce_num, + cdf_u16tos8(sbuf, ce[i].ce_namlen, ce[i].ce_name), + cdf_ctime(&ts.tv_sec, tbuf)); + } + free(cat); +} + #endif #ifdef TEST @@ -1309,6 +1400,7 @@ main(int argc, char *argv[]) cdf_stream_t sst, scn; cdf_dir_t dir; cdf_info_t info; + const cdf_directory_t *root; if (argc < 2) { (void)fprintf(stderr, "Usage: %s <filename>\n", getprogname()); @@ -1342,7 +1434,8 @@ main(int argc, char *argv[]) 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) + if (cdf_read_short_stream(&info, &h, &sat, &dir, &sst, &root) + == -1) err(1, "Cannot read short stream"); #ifdef CDF_DEBUG cdf_dump_stream(&h, &sst); @@ -1355,9 +1448,17 @@ main(int argc, char *argv[]) if (cdf_read_summary_info(&info, &h, &sat, &ssat, &sst, &dir, &scn) == -1) - err(1, "Cannot read summary info"); + warn("Cannot read summary info"); +#ifdef CDF_DEBUG + else + cdf_dump_summary_info(&h, &scn); +#endif + if (cdf_read_catalog(&info, &h, &sat, &ssat, &sst, &dir, + &scn) == -1) + warn("Cannot read catalog"); #ifdef CDF_DEBUG - cdf_dump_summary_info(&h, &scn); + else + cdf_dump_catalog(&h, &scn); #endif (void)close(info.i_fd); |
