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vrf.c
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#include <string.h>
#include "java.h"
#include "vrf.h"
#include "log.h"
static int validateConstantPoolEntry(ClassFile *, u2, u1 *, u1);
static int validateFieldDescriptor(u2, u1 *);
static int validateMethodDescriptor(u2, u1 *);
static int validateAttributes_class(ClassFile *, u2, attr_info *);
static int validateAttributes_field(ClassFile *, field_info *);
static int validateAttributes_method(ClassFile *, method_info *);
static int validateAttributes_code(ClassFile *, attr_Code_info *);
static int validateJavaTypeSignature(u2, u1 *);
extern int
checkMagic(u4 magic)
{
if (magic == MAGIC_ORACLE)
return 0;
logError("File structure invalid,"
" fail to decompile! [0x%X]\r\n",
magic);
return -1;
}
static int
validateConstantPoolEntry(ClassFile *cf, u2 i, u1 *bul, u1 tag)
{
cp_info *info;
const_Class_data *cci;
const_Fieldref_data *cfi;
const_Methodref_data *cmi;
const_String_data *csi;
const_NameAndType_data *cni;
const_Utf8_data *cui;
const_MethodHandle_data *cmhi;
const_MethodType_data *cmti;
const_InvokeDynamic_data *cidi;
u2 j;
#if VER_CMP(51, 0)
attr_BootstrapMethods_info *dataBootstrapMethods;
struct bootstrap_method *bm;
#endif
info = &(cf->constant_pool[i]);
if (i == 0)
{
logError("Pointing to null entry!\r\n");
return -1;
}
if (tag != 0 && info->tag != tag)
{
logError("Assertion error: constant pool[%i] is not CONSTANT_%s_info!\r\n", info->tag, get_cp_name(info->tag));
return -1;
}
if (bul[i])
return 0;
switch (info->tag)
{
case CONSTANT_Class:
cci = (const_Class_data *) info;
if (validateConstantPoolEntry(cf,
cci->name_index,
bul, CONSTANT_Utf8) < 0)
return -1;
break;
case CONSTANT_Fieldref:
case CONSTANT_Methodref:
case CONSTANT_InterfaceMethodref:
cfi = (const_Fieldref_data *) info;
if (validateConstantPoolEntry(cf,
cfi->class_index, bul, CONSTANT_Class) < 0)
return -1;
if (validateConstantPoolEntry(cf,
cfi->name_and_type_index,
bul, CONSTANT_NameAndType) < 0)
return -1;
cni = (const_NameAndType_data *)
getConstant(cf, cfi->name_and_type_index);
cui = (const_Utf8_data *)
getConstant(cf, cni->descriptor_index);
if (info->tag == CONSTANT_Fieldref)
{
if (validateFieldDescriptor(cui->length,
cui->bytes) < 0)
return -1;
}
else
{
if (info->tag == CONSTANT_Methodref
&& cui->bytes[0] == '<')
{
// return type must be void
for (j = 0; j < cui->length;)
if (cui->bytes[j++] == ')')
break;
if (cui->bytes[j++] != 'V'
|| cui->length != j)
return -1;
// special method name for constructors
cui = (const_Utf8_data *)
getConstant(cf, cni->name_index);
if (strncmp((char *) cui->bytes,
"<init>", cui->length)
&& strncmp((char *) cui->bytes,
"<clinit>", cui->length))
return -1;
break;
}
if (validateMethodDescriptor(cui->length,
cui->bytes) < 0)
return -1;
}
break;
case CONSTANT_String:
csi = (const_String_data *) info;
if (validateConstantPoolEntry(cf,
csi->string_index,
bul, CONSTANT_Utf8) < 0)
return -1;
break;
case CONSTANT_Long:
case CONSTANT_Double:
bul[i + 1] = 1;
break;
case CONSTANT_NameAndType:
cni = (const_NameAndType_data *) info;
if (validateConstantPoolEntry(cf,
cni->name_index,
bul, CONSTANT_Utf8) < 0)
return -1;
if (validateConstantPoolEntry(cf,
cni->descriptor_index,
bul, CONSTANT_Utf8) < 0)
return -1;
// `const_NameAndType_data` is never used directly
// which means Cruiser validates its items in:
// `const_Fieldref_data`,
// `const_Methodref_data`,
// and `const_InterfaceMethodref_data`
break;
case CONSTANT_Utf8:
cui = (const_Utf8_data *) info;
if (!cui->bytes)
{
logError("Invalid const_Utf8_data!\r\n");
return -1;
}
for (j = 0; j < cui->length; j++)
if (cui->bytes[j] == 0
|| cui->bytes[j] >= 0xf0
&& cui->bytes[j] <= 0xff)
return -1;
break;
case CONSTANT_MethodHandle:
cmhi = (const_MethodHandle_data *) info;
switch (cmhi->reference_kind)
{
case REF_getField:
case REF_getStatic:
case REF_putField:
case REF_putStatic:
if (validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_Fieldref) < 0)
return -1;
break;
case REF_invokeVirtual:
case REF_newInvokeSpecial:
if (validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_Methodref) < 0)
return -1;
case REF_invokeStatic:
case REF_invokeSpecial:
if (compareVersion0(cf->major_version,
cf->minor_version,
52, 0) >= 0)
{
if (validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_Methodref) < 0
&& validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_InterfaceMethodref) < 0)
return -1;
}
else if (validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_Methodref) < 0)
return -1;
break;
case REF_invokeInterface:
if (validateConstantPoolEntry(cf,
cmhi->reference_index,
bul, CONSTANT_InterfaceMethodref) < 0)
return -1;
break;
default:
logError("Constant pool entry[%i] has invalid reference kind[%i] as const_MethodHandle_data!\r\n",
i, cmhi->reference_kind);
return -1;
}
cfi = (const_Fieldref_data *)
&(cf->constant_pool[cmhi->reference_index]);
cni = (const_NameAndType_data *)
&(cf->constant_pool[cfi->name_and_type_index]);
cui = (const_Utf8_data *)
&(cf->constant_pool[cni->name_index]);
switch (cmhi->reference_kind)
{
case REF_invokeVirtual:
case REF_invokeStatic:
case REF_invokeSpecial:
case REF_invokeInterface:
if (!strncmp((char *) cui->bytes,
"<init>", cui->length))
{
logError("Method name '<init>' is invalid "
"because MethodHandle reference kind "
"is %i!\r\n",
cmhi->reference_kind);
return -1;
}
else if (!strncmp((char *) cui->bytes,
"<clinit>", cui->length))
{
logError("Method name '<clinit>' is invalid "
"because MethodHandle reference kind "
"is %i!\r\n",
cmhi->reference_kind);
return -1;
}
break;
case REF_newInvokeSpecial:
if (strncmp((char *) cui->bytes,
"<init>", cui->length))
{
logError("Method name '%.*s' is invalid "
"because MethodHandle reference kind "
"is %i!\r\n",
cui->length,
(char *) cui->bytes,
cmhi->reference_kind);
return -1;
}
break;
}
break;
case CONSTANT_MethodType:
cmti = (const_MethodType_data *) info;
if (validateConstantPoolEntry(cf,
cmti->descriptor_index,
bul, CONSTANT_Utf8) < 0)
return -1;
cui = (const_Utf8_data *)
getConstant(cf, cmti->descriptor_index);
if (validateMethodDescriptor(cui->length,
cui->bytes) < 0)
return -1;
break;
#if VER_CMP(51, 0)
case CONSTANT_InvokeDynamic:
cidi = (const_InvokeDynamic_data *) info;
if (validateConstantPoolEntry(cf,
cidi->name_and_type_index,
bul, CONSTANT_NameAndType) < 0)
return -1;
cni = (const_NameAndType_data *)
getConstant(cf, cidi->name_and_type_index);
cui = (const_Utf8_data *)
getConstant(cf, cni->descriptor_index);
if (validateMethodDescriptor(cui->length,
cui->bytes) < 0)
return -1;
if (!cf->attributes)
{
logError("Class attributes ain't loaded!\r\n");
return -1;
}
dataBootstrapMethods =
(attr_BootstrapMethods_info *) 0;
for (j = 0; j < cf->attributes_count; j++)
{
if (cf->attributes[j].tag !=
TAG_ATTR_BOOTSTRAPMETHODS)
continue;
dataBootstrapMethods =
(attr_BootstrapMethods_info *)
cf->attributes[j].data;
break;
}
if (!dataBootstrapMethods)
{
logError("Attribute BootstrapMethods is not found!\r\n");
return -1;
}
bm = &(dataBootstrapMethods->bootstrap_methods[
cidi->bootstrap_method_attr_index]);
cmhi = (const_MethodHandle_data *)
&(cf->constant_pool[bm->bootstrap_method_ref]);
switch (cmhi->reference_kind)
{
case REF_invokeStatic: // 6
case REF_newInvokeSpecial: // 8
break;
default:
logError("Invalid reference_kind [%i]!\r\n",
cmhi->reference_kind);
return -1;
}
cmi = (const_Methodref_data *)
&(cf->constant_pool[
cmhi->reference_index]);
cni = (const_NameAndType_data *)
&(cf->constant_pool[
cmi->name_and_type_index]);
cui = (const_Utf8_data *)
&(cf->constant_pool[
cni->descriptor_index]);
if (strncmp((char *) cui->bytes,
"(Ljava/lang/invoke/MethodHandles$Lookup;"
"Ljava/lang/String;"
"Ljava/lang/invoke/MethodType;)",
88))
{
logError("Invalid bootstrap method arguments [%.*s]!\r\n",
cui->length, cui->bytes);
return -1;
}
for (j = 0; j < bm->num_bootstrap_arguments; j++)
{
if (validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_String) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_Class) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_Integer) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_Long) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_Float) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_Double) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_MethodHandle) < 0
&& validateConstantPoolEntry(cf,
bm->bootstrap_arguments[j],
bul, CONSTANT_MethodType) < 0)
{
logError("Invalid bootstrap method argument type!\r\n");
return -1;
}
}
break;
#endif
default:
break;
}
bul[i] = 1;
return 0;
}
extern int
validateConstantPool(ClassFile *cf)
{
u1 bul[cf->constant_pool_count];
u2 i;
bzero(bul, cf->constant_pool_count);
for (i = 1u; i < cf->constant_pool_count; i++)
if (validateConstantPoolEntry(cf, i, bul, 0) < 0)
{
logError("Constant pool is invalid[%i]!\r\n", i);
return -1;
}
return 0;
}
extern int
validateFields(ClassFile *cf)
{
u2 i, j, fields_count;
field_info *field, *field1;
u2 flags;
u1 is_public, is_protected, is_private;
u1 is_final, is_volatile;
const_Utf8_data *cui, *cui1;
fields_count = cf->fields_count;
// No two fields in one `class` file may have
// the same name and descriptor
for (i = 0; i < fields_count;)
{
field = &(cf->fields[i]);
cui = getConstant_Utf8(cf, field->name_index);
if (!cui) return -1;
for (j = ++i; j < fields_count; j++)
{
field1 = &(cf->fields[j]);
cui1 = getConstant_Utf8(cf, field1->name_index);
if (!cui1) return -1;
if (cui->length != cui1->length)
continue;
if (strncmp((char *) cui->bytes,
(char *) cui1->bytes,
cui->length) == 0)
return -1;
}
}
for (i = 0; i < fields_count; i++)
{
field = &(cf->fields[i]);
// validate field access flags
flags = field->access_flags;
j = flags & ~ACC_FIELD;
if (j)
{
logError("Unknown flags [0x%X] detected @ "
"cf->fields[%i]!\r\n",
j, i);
return -1;
}
is_public = (flags & ACC_PUBLIC) ? 1 : 0;
is_protected = (flags & ACC_PROTECTED) ? 1 : 0;
is_private = (flags & ACC_PRIVATE) ? 1 : 0;
is_final = (flags & ACC_FINAL) ? 1 : 0;
is_volatile = (flags & ACC_VOLATILE) ? 1 : 0;
if (is_public && is_protected
|| is_public && is_private
|| is_protected && is_private)
{
logError("Fields can't be PUBLIC, PROTECTED and "
"PRIVATE simultaneously!\r\n");
return -1;
}
if (is_final && is_volatile)
{
logError("Fields can't be FINAL and "
"VOLATILE simultaneously!\r\n");
return -1;
}
if (cf->access_flags & ACC_INTERFACE)
{
if (!is_public || !(flags & ACC_STATIC) || !is_final)
{
logError("Fields should be PUBLIC STATIC FINAL!\r\n");
return -1;
}
if (flags & ~(ACC_PUBLIC | ACC_STATIC
| ACC_FINAL | ACC_SYNTHETIC))
{
logError("Interface field has invalid access flags!\r\n");
return -1;
}
}
else if (cf->access_flags & ACC_ENUM)
{
if (!is_public || !(flags & ACC_STATIC)
|| !is_final || !(flags & ACC_ENUM))
{
logError("Fields should be PUBLIC STATIC FINAL!\r\n");
return -1;
}
}
// validate field name
cui = getConstant_Utf8(cf, field->name_index);
if (!cui)
return -1;
// validate field descriptor
cui = getConstant_Utf8(cf, field->descriptor_index);
if (!cui)
return -1;
if (validateFieldDescriptor(cui->length,
cui->bytes) < 0)
{
logError("Invalid name \"%.*s\" detected @ "
"cf->fields[%i]!\r\n",
cui->length, cui->bytes, i);
return -1;
}
}
return 0;
}
extern int
validateMethods(ClassFile *cf)
{
u2 i, j, flags;
method_info *method, *method1;
u1 is_public, is_protected, is_private;
u1 is_final, is_abstract;
const_Utf8_data *cui, *cui1, *cui2, *cui3;
for (i = 0; i < cf->methods_count;)
{
method = &(cf->methods[i]);
cui = getConstant_Utf8(cf, method->name_index);
if (!cui) return -1;
cui1 = getConstant_Utf8(cf, method->descriptor_index);
if (!cui1) return -1;
for (j = ++i; j < cf->methods_count; j++)
{
method1 = &(cf->methods[j]);
cui2 = getConstant_Utf8(cf, method1->name_index);
if (!cui2) return -1;
cui3 = getConstant_Utf8(cf, method1->descriptor_index);
if (!cui3) return -1;
if (cui != cui2)
continue;
if (strncmp((char *) cui->bytes,
(char *) cui2->bytes,
cui->length) != 0)
continue;
if (strncmp((char *) cui1->bytes,
(char *) cui3->bytes,
cui1->length) == 0)
return -1;
}
}
for (i = 0; i < cf->methods_count; i++)
{
method = &(cf->methods[i]);
// validate field access flags
flags = method->access_flags;
if (flags & ~ACC_METHOD)
{
logError("Unknown flags [0x%X] detected @ "
"cf->methods[%i]!\r\n",
flags & ~ACC_METHOD, i);
return -1;
}
is_public = (flags & ACC_PUBLIC) ? 1 : 0;
is_protected = (flags & ACC_PROTECTED) ? 1 : 0;
is_private = (flags & ACC_PRIVATE) ? 1 : 0;
is_final = (flags & ACC_FINAL) ? 1 : 0;
is_abstract = (flags & ACC_ABSTRACT) ? 1 : 0;
if (is_public && is_protected
|| is_public && is_private
|| is_protected && is_private)
{
logError("Methods can't be PUBLIC, PROTECTED and PRIVATE"
" simultaneously!\r\n");
return -1;
}
if (cf->access_flags & ACC_INTERFACE)
{
if (flags & (ACC_PROTECTED | ACC_FINAL
| ACC_SYNCHRONIZED | ACC_NATIVE))
{
logError("Interface method has invalid access flags!\r\n");
return -1;
}
#if VER_CMP(52, 0)
if (!is_public && !is_private)
{
logError("Interface method should either be "
"PUBLIC or PRIVATE!\r\n");
return -1;
}
#else
if (!is_public)
{
logError("Interface method is not public!\r\n");
return -1;
}
if (!is_abstract)
{
logError("Interface method is not abstract!\r\n");
return -1;
}
#endif
}
if (is_abstract)
{
if (flags & (ACC_PRIVATE | ACC_STATIC | ACC_FINAL
| ACC_SYNCHRONIZED | ACC_NATIVE | ACC_STRICT))
{
logError("Abstract method can't be PRIVATE, "
"STATIC, FINAL, SYNCHRONIZED, "
"NATIE or STRICT!\r\n");
return -1;
}
}
// validate method name
cui = getConstant_Utf8(cf, method->name_index);
if (!cui)
return -1;
if (!strncmp((char *) cui->bytes,
"<init>", cui->length))
{
if (flags & ~(ACC_PUBLIC | ACC_PROTECTED
| ACC_PRIVATE | ACC_VARARGS
| ACC_STRICT | ACC_SYNTHETIC))
{
logError("Initialization method has "
"invalid access flags!\r\n");
return -1;
}
}
// validate method descriptor
cui = getConstant_Utf8(cf, method->descriptor_index);
if (!cui)
return -1;
if (validateMethodDescriptor(cui->length,
cui->bytes) < 0)
{
logError("Invalid name \"%.*s\" detected @ "
"cf->methods[%i]!\r\n",
cui->length, cui->bytes, i);
return -1;
}
}
}
static int
validateFieldDescriptor(u2 len, u1 *str)
{
u2 i;
logInfo("Validating FIELD descriptor \"%i: %.*s\"...\r\n",
len, len, str);
if (len == 1)
{
switch (str[0])
{
case 'B':case 'C':case 'D':case 'F':
case 'I':case 'J':case 'S':case 'Z':
return 0;
default:
logError("Invalid field descriptor \"%.*s\"!\r\n",
len, str);
return -1;
}
}
else if (len > 1)
{
switch (str[0])
{
case '[':
for (i = 0; i < len;)
if (str[++i] != '[')
break;
if (i > 255)
{
logError("Invalid array dimension: %i!\r\n", i);
return -1;
}
return validateFieldDescriptor(len - i, str + i);
default:
if (str[0] != 'L')
{
logError("Binary name doesn't begin with 'L'!\r\n");
return -1;
}
if (str[len - 1] != ';')
{
logError("Binary name doesn't end with ';'!\r\n");
return -1;
}
return 0;
}
}
return -1;
}
static int
validateMethodDescriptor(u2 len, u1 *str)
{
u2 i, j, count;
logInfo("Validating METHOD descriptor \"%i: %.*s\"...\r\n",
len, len, str);
if (str[0] != '(')
return -1;
i = j = 1;
for (; i < len; i++)
{
if (str[i] == ';' || str[i] == ')')
{
if (i - j > 0 &&
validateFieldDescriptor(i - j + 1, str + j) < 0)
return -1;
j = i + 1;
}
if (str[i] == ')')
break;
}
ret:
++i;
len -= i;
str += i;
logInfo("Validating RETURN descriptor \"%i: %.*s\"...\r\n",
len, len, str);
if (len == 1)
switch (str[0])
{
case 'B':case 'C':case 'D':
case 'F':case 'I':case 'J':
case 'S':case 'Z':case 'V':
return 0;
default:
return -1;
}
else if (len > 1)
switch (str[0])
{
case '[':
for (i = 0; i < len;)
if (str[++i] != '[')
break;
if (i > 255)
return -1;
return validateFieldDescriptor(len - i, str + i);
default:
if (str[0] != 'L')
return -1;
if (str[len - 1] != ';')
return -1;
return 0;
}
return -1;
}
static int
validateAttributes_class(ClassFile *cf, u2 len, attr_info *attributes)
{
u2 i, j;
attr_info *attribute;
u4 attribute_length;
#if VER_CMP(45, 3)
attr_SourceFile_info *asf;
attr_InnerClasses_info *aic;
attr_Synthetic_info *asyn;
attr_Deprecated_info *ad;
#endif
#if VER_CMP(49, 0)
attr_EnclosingMethod_info *aem;
//attr_SourceDebugExtension_info *asde;
attr_Signature_info *asig;
attr_RuntimeVisibleAnnotations_info *arva;
attr_RuntimeInvisibleAnnotations_info *aria;
#endif
#if VER_CMP(51, 0)
attr_BootstrapMethods_info *abm;
#endif
#if VER_CMP(52, 0)
attr_RuntimeVisibleTypeAnnotations_info *arvta;
attr_RuntimeInvisibleTypeAnnotations_info *arita;
#endif
const_Utf8_data *descriptor;
const_Class_data *cci;
const_Utf8_data *cui;
const_NameAndType_data *cni;
struct classes_entry *ce;
u2 flags;
for (i = 0; i < len; i++)
{
attribute = &(attributes[i]);
switch (attribute->tag)
{
#if VER_CMP(45, 3)
case TAG_ATTR_SOURCEFILE:
break;
case TAG_ATTR_INNERCLASSES:
aic = (attr_InnerClasses_info *) attribute->data;
attribute_length = sizeof (aic->number_of_classes)
+ sizeof (struct classes_entry)
* aic->number_of_classes;
if (attribute_length != attribute->attribute_length)
return -1;
for (j = 0; j < aic->number_of_classes; j++)
{
ce = &(aic->classes[j]);
cci = getConstant_Class(cf, ce->inner_class_info_index);
if (!cci)
return -1;
// If C is not a member of a class or an interface
// (that is, if C is a top-level class or interface
// or a local class or an anonymous class),
// the value of the outer_class_info_index item
// must be zero
if (ce->outer_class_info_index != 0)
{
cci = getConstant_Class(cf, ce->outer_class_info_index);
if (!cci)
return -1;
}
// If C is anonymous, the value of the inner_name_index
// item must be zero
if (ce->inner_name_index != 0)
{
// original simple name of C given in the source
cui = getConstant_Utf8(cf, ce->inner_name_index);
if (!cui)
return -1;
}
flags = ce->inner_class_access_flags;
#if VER_CMP(51, 0)
if (ce->inner_name_index == 0
&& ce->outer_class_info_index != 0)
return -1;
#endif
// Oracle's Java Virtual Machine implementation
// does not check the consistency of an InnerClasses
// attribute against a class file representing a class
// or interface referenced by the attribute
}
break;
case TAG_ATTR_SYNTHETIC:
if (attribute->attribute_length != 0)
return -1;
break;
case TAG_ATTR_DEPRECATED:
break;
#endif
#if VER_CMP(49, 0)
case TAG_ATTR_ENCLOSINGMETHOD:
aem = (attr_EnclosingMethod_info *) attribute->data;
attribute_length = sizeof (aem->class_index)
+ sizeof (aem->method_index);
if (attribute_length != attribute->attribute_length)
return -1;
cci = getConstant_Class(cf, aem->class_index);
if (!cci)
return -1;
// If the current class is not immediately enclosed by
// a method or a constructor, then the value of the
// method_index item must be zero
// In particular, method_index must be zero if the current
// class was immediately enclosed in source code by an
// instance initializer, static initializer, instance
// variable initializer, or class variable initializer.
// (The first two concern both local classes and anonymous
// classes, while the last two concern anonymous classes
// declared on the right hand side of a field assignment)
if (aem->method_index != 0)
{
cni = getConstant_NameAndType(cf, aem->method_index);
if (!cni)
return -1;
}
break;
case TAG_ATTR_SOURCEDEBUGEXTENSION:
break;
case TAG_ATTR_SIGNATURE: // class
asig = (attr_Signature_info *) attribute->data;
attribute_length = sizeof (asig->signature_index);
if (attribute_length != attribute->attribute_length)
return -1;
cui = getConstant_Utf8(cf, asig->signature_index);
if (!cui)
return -1;
break;
case TAG_ATTR_RUNTIMEVISIBLEANNOTATIONS:
break;
case TAG_ATTR_RUNTIMEINVISIBLEANNOTATIONS:
break;
#endif
#if VER_CMP(51, 0)
case TAG_ATTR_BOOTSTRAPMETHODS:
break;
#endif
#if VER_CMP(52, 0)
case TAG_ATTR_RUNTIMEVISIBLETYPEANNOTATIONS:
break;
case TAG_ATTR_RUNTIMEINVISIBLETYPEANNOTATIONS:
break;
#endif
default:
return -1;
}
}
return 0;
}
static int
validateAttributes_field(ClassFile *cf, field_info *field)
{
u2 i;
attr_info *attributes, *attribute;
u4 attribute_length;
#if VER_CMP(45, 3)
attr_ConstantValue_info *acv;
attr_Synthetic_info *asyn;
attr_Deprecated_info *ad;
#endif
#if VER_CMP(49, 0)
attr_Signature_info *asig;
attr_RuntimeVisibleAnnotations_info *arva;
attr_RuntimeInvisibleAnnotations_info *aria;
#endif
#if VER_CMP(52, 0)
attr_RuntimeVisibleTypeAnnotations_info *arvta;
attr_RuntimeInvisibleTypeAnnotations_info *arita;
#endif
const_Utf8_data *descriptor;
const_Utf8_data *cui;
attributes = field->attributes;
for (i = 0; i < field->attributes_count; i++)
{
attribute = &(attributes[i]);
switch (attribute->tag)
{
#if VER_CMP(45, 3)
case TAG_ATTR_CONSTANTVALUE:
acv = (attr_ConstantValue_info *) attribute->data;
if (attribute->attribute_length
!= sizeof (acv->constantvalue_index))
return -1;
descriptor = getConstant_Utf8(cf, field->descriptor_index);
if (!descriptor)
return -1;
switch (descriptor->bytes[0])
{
case 'J':
if (!getConstant_Long(cf, acv->constantvalue_index))
return -1;
break;
case 'F':
if (!getConstant_Float(cf, acv->constantvalue_index))
return -1;
break;
case 'D':
if (!getConstant_Double(cf, acv->constantvalue_index))
return -1;
break;
case 'I':case 'S':case 'C':case 'B':case 'Z':
if (!getConstant_Integer(cf, acv->constantvalue_index))
return -1;
break;
case 'L':
if (!strncmp((char *) descriptor->bytes,
"Ljava/lang/String;",
descriptor->length))
if (!getConstant_String(cf, acv->constantvalue_index))
return -1;
break;
default:
return -1;
}
break;
case TAG_ATTR_SYNTHETIC:
if (attribute->attribute_length != 0)
return -1;
break;
case TAG_ATTR_DEPRECATED:
break;
#endif
#if VER_CMP(49, 0)
case TAG_ATTR_SIGNATURE: // field
asig = (attr_Signature_info *) attribute->data;
attribute_length = sizeof (asig->signature_index);
if (attribute_length != attribute->attribute_length)
return -1;
cui = getConstant_Utf8(cf, asig->signature_index);
if (!cui)
return -1;
break;
case TAG_ATTR_RUNTIMEVISIBLEANNOTATIONS:
break;
case TAG_ATTR_RUNTIMEINVISIBLEANNOTATIONS:
break;
#endif
#if VER_CMP(52, 0)
case TAG_ATTR_RUNTIMEVISIBLETYPEANNOTATIONS:
break;
case TAG_ATTR_RUNTIMEINVISIBLETYPEANNOTATIONS:
break;
#endif
default:
return -1;
}