diff options
Diffstat (limited to 'src/arbits/slbt_archive_meta.c')
| -rw-r--r-- | src/arbits/slbt_archive_meta.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/arbits/slbt_archive_meta.c b/src/arbits/slbt_archive_meta.c index 5b6874f..0bd0ac7 100644 --- a/src/arbits/slbt_archive_meta.c +++ b/src/arbits/slbt_archive_meta.c @@ -439,6 +439,9 @@ static int slbt_ar_parse_primary_armap_sysv_32( struct ar_meta_member_info * memberp; struct ar_meta_armap_common_32 *armapref; uint32_t nsyms; + uint32_t nstrs; + const char * ch; + const char * cap; unsigned char * uch; unsigned char (*mark)[0x04]; @@ -455,8 +458,46 @@ static int slbt_ar_parse_primary_armap_sysv_32( nsyms = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3]; mark += nsyms; + if (memberp->ar_object_size < (sizeof(*mark) + (nsyms * sizeof(*mark)))) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_NUMBER_OF_SYMS); + m->symstrs = (const char *)mark; + cap = memberp->ar_object_data; + cap += memberp->ar_object_size; + + if (cap == m->symstrs) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE); + + if (nsyms && !m->symstrs[0]) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE); + + for (ch=&m->symstrs[1],nstrs=0; ch<cap; ch++) { + if (!ch[0] && !ch[-1] && (nstrs < nsyms)) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE); + + if (!ch[0] && ch[-1]) + nstrs++; + } + + if (nstrs != nsyms) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE); + + if (cap[-1]) + return SLBT_CUSTOM_ERROR( + dctx, + SLBT_ERR_AR_INVALID_ARMAP_STRING_TABLE); + if (!(m->symstrv = calloc(nsyms + 1,sizeof(const char *)))) return SLBT_SYSTEM_ERROR(dctx,0); |