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authormidipix <writeonce@midipix.org>2016-11-15 21:28:25 -0500
committermidipix <writeonce@midipix.org>2016-11-15 21:28:25 -0500
commit85fd0d93894d1d9f4b0d36e654457608b2469cf6 (patch)
treeff18178fc5f9fdf793a7bea88d5419ae3a372bc1 /src/logic
parent4377060a2796df43a700dad39cfc3c13f7f1dea7 (diff)
downloadperk-85fd0d93894d1d9f4b0d36e654457608b2469cf6.tar.bz2
perk-85fd0d93894d1d9f4b0d36e654457608b2469cf6.tar.xz
pe_get_image_meta(): code maintenance.
Diffstat (limited to 'src/logic')
-rw-r--r--src/logic/pe_get_image_meta.c71
1 files changed, 38 insertions, 33 deletions
diff --git a/src/logic/pe_get_image_meta.c b/src/logic/pe_get_image_meta.c
index 9fcd157..14e54c7 100644
--- a/src/logic/pe_get_image_meta.c
+++ b/src/logic/pe_get_image_meta.c
@@ -164,27 +164,30 @@ int pe_get_image_meta(
const struct pe_raw_image * image,
struct pe_image_meta ** meta)
{
- int i,s,status;
- long l;
- unsigned j;
- unsigned char * mark;
- struct pe_image_meta * m;
- char * base = image->addr;
+ int ret;
+ int i,s;
+ long l;
+ unsigned j;
+ unsigned char * mark;
+ struct pe_image_meta * m;
+ char * base;
+
+ base = image->addr;
if (!(m = calloc(1,sizeof(*m))))
return PERK_SYSTEM_ERROR(dctx);
m->ados = (struct pe_image_dos_hdr *)base;
- if ((status = (pe_read_dos_header(m->ados,&m->dos))))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,status));
+ if ((ret = (pe_read_dos_header(m->ados,&m->dos))))
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,ret));
m->acoff = (struct pe_coff_file_hdr *)(base + m->dos.dos_lfanew);
- if ((status = (pe_read_coff_header(m->acoff,&m->coff))))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,status));
+ if ((ret = (pe_read_coff_header(m->acoff,&m->coff))))
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,ret));
mark = image->addr + m->coff.ptr_to_sym_tbl;
mark += m->coff.num_of_syms * sizeof(struct pe_coff_sym_entry);
@@ -193,17 +196,19 @@ int pe_get_image_meta(
m->coff.ptr_to_string_tbl += m->coff.num_of_syms * sizeof(struct pe_coff_sym_entry);
m->coff.size_of_string_tbl = pe_read_long(mark);
- m->aopt = (union pe_opt_hdr *)((char *)m->acoff + sizeof(*m->acoff));
+ mark = &m->acoff->signature[0];
+ m->aopt = (union pe_opt_hdr *)(mark + sizeof(*m->acoff));
- if ((status = (pe_read_optional_header(m->aopt,&m->opt))))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,status));
+ if ((ret = (pe_read_optional_header(m->aopt,&m->opt))))
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,ret));
- m->asectbl = (struct pe_sec_hdr *)((char *)m->aopt + m->coff.size_of_opt_hdr);
+ mark = &m->aopt->opt_hdr_32.magic[0];
+ m->asectbl = (struct pe_sec_hdr *)(mark + m->coff.size_of_opt_hdr);
if (!(m->sectbl = calloc(m->coff.num_of_sections,sizeof(*(m->sectbl)))))
- return pe_free_image_meta_impl(m,
- PERK_SYSTEM_ERROR(dctx));
+ return pe_free_image_meta_impl(
+ m,PERK_SYSTEM_ERROR(dctx));
for (i=0; i<m->coff.num_of_sections; i++) {
pe_read_section_header(&m->asectbl[i],&m->sectbl[i]);
@@ -219,8 +224,8 @@ int pe_get_image_meta(
s = pe_get_block_section_index(m,&m->opt.dirs.export_tbl);
if ((i >= 0) && (i != s))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,PERK_ERR_IMAGE_MALFORMED));
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,PERK_ERR_IMAGE_MALFORMED));
if (s >= 0) {
m->hedata = &m->sectbl[s];
@@ -242,8 +247,8 @@ int pe_get_image_meta(
s = pe_get_block_section_index(m,&m->opt.dirs.import_tbl);
if ((i >= 0) && (i != s))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,PERK_ERR_IMAGE_MALFORMED));
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,PERK_ERR_IMAGE_MALFORMED));
if (s >= 0) {
m->hidata = &m->sectbl[s];
@@ -256,13 +261,13 @@ int pe_get_image_meta(
if (m->aidata) {
/* num of implibs */
- for (pidata=m->aidata; pidata->name_rva[0]; pidata++,m->summary.nimplibs++)
- (void)0;
+ for (pidata=m->aidata; pidata->name_rva[0]; pidata++)
+ m->summary.nimplibs++;
/* import headers */
- if (!(m->idata = calloc(m->summary.nimplibs,sizeof(*(m->idata)))))
- return pe_free_image_meta_impl(m,
- PERK_SYSTEM_ERROR(dctx));
+ if (!(m->idata = calloc(m->summary.nimplibs,sizeof(*m->idata))))
+ return pe_free_image_meta_impl(
+ m,PERK_SYSTEM_ERROR(dctx));
for (i=0; i<m->summary.nimplibs; i++) {
pe_read_import_header(&m->aidata[i],&m->idata[i]);
@@ -286,17 +291,17 @@ int pe_get_image_meta(
m->idata[i].count++;
if (!(m->idata[i].items = calloc(m->idata[i].count,sizeof(*(m->idata[i].items)))))
- return pe_free_image_meta_impl(m,
- PERK_SYSTEM_ERROR(dctx));
+ return pe_free_image_meta_impl(
+ m,PERK_SYSTEM_ERROR(dctx));
}
for (j=0; j<m->idata[i].count; j++) {
- if ((status = pe_read_import_lookup_item(
+ if ((ret = pe_read_import_lookup_item(
&(m->idata[i].aitems[j]),
&(m->idata[i].items[j]),
m->opt.std.magic)))
- return pe_free_image_meta_impl(m,
- PERK_CUSTOM_ERROR(dctx,status));
+ return pe_free_image_meta_impl(
+ m,PERK_CUSTOM_ERROR(dctx,ret));
switch (m->opt.std.magic) {
case PE_MAGIC_PE32: