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/***************************************************************/
/* perk: PE Resource Kit */
/* Copyright (C) 2015--2025 SysDeer Technologies, LLC */
/* Released under GPLv2 and GPLv3; see COPYING.PERK. */
/***************************************************************/
#include <stdint.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <perk/perk.h>
#include <perk/perk_arbits.h>
#include "perk_ar_impl.h"
#include "perk_driver_impl.h"
#include "perk_errinfo_impl.h"
#include "perk_visibility_impl.h"
perk_hidden int pe_ar_parse_primary_armap_bsd_32(
const struct pe_driver_ctx * dctx,
struct pe_archive_meta_impl * m)
{
struct ar_raw_armap_bsd_32 * armap;
struct ar_meta_member_info * memberp;
struct ar_meta_armap_common_32 *armapref;
struct ar_meta_armap_ref_32 * symrefs;
uint32_t idx;
uint32_t uref;
uint32_t attr;
uint32_t nsyms;
uint32_t nstrs;
uint32_t sizeofrefs_le;
uint32_t sizeofrefs_be;
uint32_t sizeofrefs;
uint32_t sizeofstrs;
const char * ch;
const char * cap;
unsigned char * uch;
unsigned char (*mark)[0x04];
armap = &m->armaps.armap_bsd_32;
memberp = m->memberv[0];
mark = memberp->ar_object_data;
armap->ar_size_of_refs = mark;
uch = *mark++;
armap->ar_first_name_offset = mark;
sizeofrefs_le = (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
sizeofrefs_be = (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
if (sizeofrefs_le < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_le;
attr = AR_ARMAP_ATTR_LE_32;
} else if (sizeofrefs_be < memberp->ar_object_size - sizeof(*mark)) {
sizeofrefs = sizeofrefs_be;
attr = AR_ARMAP_ATTR_BE_32;
} else {
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_SIZE_OF_REFS);
}
nsyms = sizeofrefs / sizeof(struct ar_raw_armap_ref_32);
mark += (sizeofrefs / sizeof(*mark));
armap->ar_size_of_strs = mark;
uch = *mark++;
sizeofstrs = (attr == AR_ARMAP_ATTR_LE_32)
? (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0]
: (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3];
if (sizeofstrs > memberp->ar_object_size - 2*sizeof(*mark) - sizeofrefs)
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_SIZE_OF_STRS);
m->symstrs = (const char *)mark;
cap = m->symstrs;
cap += sizeofstrs;
if ((cap == m->symstrs) && nsyms)
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (nsyms && !m->symstrs[0])
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_STRING_TABLE);
for (ch=&m->symstrs[1],nstrs=0; ch<cap; ch++) {
if (!ch[0] && !ch[-1] && (nstrs < nsyms))
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!ch[0] && ch[-1] && (nstrs < nsyms))
nstrs++;
}
if (nstrs != nsyms)
return PERK_CUSTOM_ERROR(
dctx,
PERK_ERR_AR_INVALID_ARMAP_STRING_TABLE);
if (!(m->symstrv = calloc(nsyms + 1,sizeof(const char *))))
return PERK_SYSTEM_ERROR(dctx);
if (!(m->armaps.armap_symrefs_32 = calloc(nsyms + 1,sizeof(*symrefs))))
return PERK_SYSTEM_ERROR(dctx);
mark = armap->ar_first_name_offset;
symrefs = m->armaps.armap_symrefs_32;
for (idx=0; idx<nsyms; idx++) {
uch = *mark++;
uref = (attr == AR_ARMAP_ATTR_BE_32)
? (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3]
: (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
symrefs[idx].ar_name_offset = uref;
uch = *mark++;
uref = (attr == AR_ARMAP_ATTR_BE_32)
? (uch[0] << 24) + (uch[1] << 16) + (uch[2] << 8) + uch[3]
: (uch[3] << 24) + (uch[2] << 16) + (uch[1] << 8) + uch[0];
symrefs[idx].ar_member_offset = uref;
}
armap->ar_string_table = m->symstrv;
armapref = &m->armaps.armap_common_32;
armapref->ar_member = memberp;
armapref->ar_symrefs = symrefs;
armapref->ar_armap_bsd = armap;
armapref->ar_armap_attr = AR_ARMAP_ATTR_BSD | attr;
armapref->ar_num_of_symbols = nsyms;
armapref->ar_size_of_refs = sizeofrefs;
armapref->ar_size_of_strs = sizeofstrs;
armapref->ar_string_table = m->symstrs;
m->armaps.armap_nsyms = nsyms;
m->armeta.a_armap_primary.ar_armap_common_32 = armapref;
return 0;
}
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