Skip to content

Commit

Permalink
[WIP] Wire up some more
Browse files Browse the repository at this point in the history 
Co-authored-by: Håvard Sørbø <[email protected]>
  • Loading branch information
@oleavr @hsorbo
oleavr and hsorbo committed Sep 15, 2023
1 parent cda4bdc commit e0e9c0f
Showing 1 changed file with 63 additions and 65 deletions.
128 changes: 63 additions & 65 deletions gum/gumswiftapiresolver.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -266,6 +266,8 @@ static void gum_module_metadata_unref (GumModuleMetadata * module);
static GArray * gum_module_metadata_get_functions (GumModuleMetadata * self);
static gboolean gum_module_metadata_collect_section (
const GumSectionDetails * details, gpointer user_data);
static void gum_module_metadata_collect_class (GumModuleMetadata * self,
const GumTypeContextDescriptor * type);
static void gum_module_metadata_collect_function (GumModuleMetadata * self,
const gchar * label, gconstpointer impl,
const GumTypeContextDescriptor * holder);
Expand Down Expand Up @@ -559,85 +561,84 @@ gum_module_metadata_collect_section (const GumSectionDetails * details,
switch (GUM_DESCRIPTOR_FLAGS_KIND (descriptor_flags))
{
case GUM_CONTEXT_DESCRIPTOR_CLASS:
{
const GumClassDescriptor * cd;
gconstpointer trailer;
guint16 type_flags;
gum_module_metadata_collect_class (module, type);
break;
default:
break;
}
}

cd = (const GumClassDescriptor *) type;
trailer = cd + 1;
return TRUE;
}

gum_skip_generic_type_trailers (&trailer, type);
static void
gum_module_metadata_collect_class (GumModuleMetadata * self,
const GumTypeContextDescriptor * type)
{
const GumClassDescriptor * cd;
gconstpointer trailer;
guint16 type_flags;

gum_skip_metadata_initialization_trailers (&trailer, type);
cd = (const GumClassDescriptor *) type;
trailer = cd + 1;

type_flags = GUM_DESCRIPTOR_FLAGS_KIND_FLAGS (type->context.flags);
gum_skip_generic_type_trailers (&trailer, type);

if (GUM_TYPE_FLAGS_CLASS_HAS_VTABLE (type_flags))
{
const GumVTableDescriptorHeader * vth;
const GumMethodDescriptor * methods;
guint32 i;
gum_skip_metadata_initialization_trailers (&trailer, type);

vth = GUM_ALIGN (trailer, GumVTableDescriptorHeader);
methods = GUM_ALIGN ((const GumMethodDescriptor *) (vth + 1),
GumMethodDescriptor);
type_flags = GUM_DESCRIPTOR_FLAGS_KIND_FLAGS (type->context.flags);

for (i = 0; i != vth->vtable_size; i++)
{
const GumMethodDescriptor * method = &methods[i];
gchar * label;
if (GUM_TYPE_FLAGS_CLASS_HAS_VTABLE (type_flags))
{
const GumVTableDescriptorHeader * vth;
const GumMethodDescriptor * methods;
guint32 i;

label = g_strdup_printf ("vtable[%u]", i);
vth = GUM_ALIGN (trailer, GumVTableDescriptorHeader);
methods = GUM_ALIGN ((const GumMethodDescriptor *) (vth + 1),
GumMethodDescriptor);

gum_module_metadata_collect_function (module, label,
gum_resolve_relative_direct_ptr (&method->impl), type);
for (i = 0; i != vth->vtable_size; i++)
{
const GumMethodDescriptor * method = &methods[i];
gchar * label;

g_free (label);
}
label = g_strdup_printf ("vtable[%u]", i);

trailer = methods + vth->vtable_size;
}
gum_module_metadata_collect_function (self, label,
gum_resolve_relative_direct_ptr (&method->impl), type);

if (GUM_TYPE_FLAGS_CLASS_HAS_OVERRIDE_TABLE (type_flags))
{
const GumOverrideTableHeader * oth;
const GumMethodOverrideDescriptor * methods;
guint32 i;
g_free (label);
}

oth = GUM_ALIGN (trailer, GumOverrideTableHeader);
methods = GUM_ALIGN ((const GumMethodOverrideDescriptor *) (oth + 1),
GumMethodOverrideDescriptor);
trailer = methods + vth->vtable_size;
}

for (i = 0; i != oth->num_entries; i++)
{
const GumMethodOverrideDescriptor * method = &methods[i];
gchar * label;
if (GUM_TYPE_FLAGS_CLASS_HAS_OVERRIDE_TABLE (type_flags))
{
const GumOverrideTableHeader * oth;
const GumMethodOverrideDescriptor * methods;
guint32 i;

label = g_strdup_printf ("overrides[%u]", i);
oth = GUM_ALIGN (trailer, GumOverrideTableHeader);
methods = GUM_ALIGN ((const GumMethodOverrideDescriptor *) (oth + 1),
GumMethodOverrideDescriptor);

gum_module_metadata_collect_function (module, label,
gum_resolve_relative_direct_ptr (&method->impl), type);
for (i = 0; i != oth->num_entries; i++)
{
const GumMethodOverrideDescriptor * method = &methods[i];
gchar * label;

g_free (label);
}
label = g_strdup_printf ("overrides[%u]", i);

trailer = methods + oth->num_entries;
}
gum_module_metadata_collect_function (self, label,
gum_resolve_relative_direct_ptr (&method->impl), type);

break;
}
case GUM_CONTEXT_DESCRIPTOR_STRUCT:
{
/* TODO */
break;
}
default:
break;
g_free (label);
}
}

return TRUE;
trailer = methods + oth->num_entries;
}
}

static void
Expand All @@ -650,17 +651,17 @@ gum_module_metadata_collect_function (GumModuleMetadata * self,
GumFunctionMetadata func;
const GumContextDescriptor * cur;

if (impl == NULL)
return;

scope = g_string_sized_new (16);

g_printerr ("\n>>> walking from \"%s\"\n", (char *) gum_resolve_relative_direct_ptr (&holder->name));
for (cur = gum_resolve_relative_indirectable_ptr (&holder->context.parent);
cur != NULL;
cur = gum_resolve_relative_indirectable_ptr (&cur->parent))
{
GumContextDescriptorKind kind = GUM_DESCRIPTOR_FLAGS_KIND (cur->flags);

g_printerr ("\tcur=%p kind=%u\n", cur, GUM_DESCRIPTOR_FLAGS_KIND (cur->flags));

switch (kind)
{
case GUM_CONTEXT_DESCRIPTOR_MODULE:
Expand Down Expand Up @@ -695,16 +696,13 @@ gum_module_metadata_collect_function (GumModuleMetadata * self,
break;
}

g_printerr ("\t\tTODO\n");
//g_printerr ("\t\tTODO\n");
break;
}
}
g_printerr ("<<<\n");

g_string_append (scope, gum_resolve_relative_direct_ptr (&holder->name));

g_printerr (" => \"%s\"\n", scope->str);

func.name = g_strdup_printf (
"%s.%s(%s+0x%" G_GINT64_MODIFIER "x)",
scope->str,
Expand Down

0 comments on commit e0e9c0f

Please sign in to comment.