diff options
Diffstat (limited to 'java')
| -rw-r--r-- | java/annotations.cpp | 83 | ||||
| -rw-r--r-- | java/annotations.h | 252 | ||||
| -rw-r--r-- | java/classfile.h | 153 | ||||
| -rw-r--r-- | java/constants.h | 208 | ||||
| -rw-r--r-- | java/endian.h | 62 | ||||
| -rw-r--r-- | java/errors.h | 6 | ||||
| -rw-r--r-- | java/javautils.cpp | 69 | ||||
| -rw-r--r-- | java/javautils.h | 9 | ||||
| -rw-r--r-- | java/membuffer.h | 64 | ||||
| -rw-r--r-- | java/test.cpp | 35 |
10 files changed, 941 insertions, 0 deletions
diff --git a/java/annotations.cpp b/java/annotations.cpp new file mode 100644 index 00000000..fc0c98fa --- /dev/null +++ b/java/annotations.cpp @@ -0,0 +1,83 @@ +#include "classfile.h" +#include "annotations.h" +#include <sstream> + +namespace java +{ + std::string annotation::toString() + { + std::ostringstream ss; + ss << "Annotation type : " << type_index << " - " << pool[type_index].str_data << std::endl; + ss << "Contains " << name_val_pairs.size() << " pairs:" << std::endl; + for(unsigned i = 0; i < name_val_pairs.size(); i++) + { + std::pair<uint16_t, element_value *> &val = name_val_pairs[i]; + auto name_idx = val.first; + ss << pool[name_idx].str_data << "(" << name_idx << ")" << " = " << val.second->toString() << std::endl; + } + return ss.str(); + } + + annotation * annotation::read (util::membuffer& input, constant_pool& pool) + { + uint16_t type_index = 0; + input.read_be(type_index); + annotation * ann = new annotation(type_index,pool); + + uint16_t num_pairs = 0; + input.read_be(num_pairs); + while(num_pairs) + { + uint16_t name_idx = 0; + // read name index + input.read_be(name_idx); + auto elem = element_value::readElementValue(input,pool); + // read value + ann->add_pair(name_idx, elem); + num_pairs --; + } + return ann; + } + + element_value* element_value::readElementValue ( util::membuffer& input, java::constant_pool& pool ) + { + element_value_type type = INVALID; + input.read(type); + uint16_t index = 0; + uint16_t index2 = 0; + std::vector <element_value *> vals; + switch (type) + { + case PRIMITIVE_BYTE: + case PRIMITIVE_CHAR: + case PRIMITIVE_DOUBLE: + case PRIMITIVE_FLOAT: + case PRIMITIVE_INT: + case PRIMITIVE_LONG: + case PRIMITIVE_SHORT: + case PRIMITIVE_BOOLEAN: + case STRING: + input.read_be(index); + return new element_value_simple(type, index, pool); + case ENUM_CONSTANT: + input.read_be(index); + input.read_be(index2); + return new element_value_enum(type, index, index2, pool); + case CLASS: // Class + input.read_be(index); + return new element_value_class(type, index, pool); + case ANNOTATION: // Annotation + // FIXME: runtime visibility info needs to be passed from parent + return new element_value_annotation(ANNOTATION, annotation::read(input, pool), pool); + case ARRAY: // Array + input.read_be(index); + for (int i = 0; i < index; i++) + { + vals.push_back(element_value::readElementValue(input, pool)); + } + return new element_value_array(ARRAY, vals, pool); + default: + throw new java::classfile_exception(); + } + } +}
\ No newline at end of file diff --git a/java/annotations.h b/java/annotations.h new file mode 100644 index 00000000..b115dc0b --- /dev/null +++ b/java/annotations.h @@ -0,0 +1,252 @@ +#pragma once +#include "classfile.h" +#include <map> +#include <vector> + +namespace java +{ + enum element_value_type : uint8_t + { + INVALID = 0, + STRING = 's', + ENUM_CONSTANT = 'e', + CLASS = 'c', + ANNOTATION = '@', + ARRAY = '[', // one array dimension + PRIMITIVE_INT = 'I', // integer + PRIMITIVE_BYTE = 'B', // signed byte + PRIMITIVE_CHAR = 'C', // Unicode character code point in the Basic Multilingual Plane, encoded with UTF-16 + PRIMITIVE_DOUBLE = 'D', // double-precision floating-point value + PRIMITIVE_FLOAT = 'F', // single-precision floating-point value + PRIMITIVE_LONG = 'J', // long integer + PRIMITIVE_SHORT = 'S', // signed short + PRIMITIVE_BOOLEAN = 'Z' // true or false + }; + /** + * The element_value structure is a discriminated union representing the value of an element-value pair. + * It is used to represent element values in all attributes that describe annotations + * - RuntimeVisibleAnnotations + * - RuntimeInvisibleAnnotations + * - RuntimeVisibleParameterAnnotations + * - RuntimeInvisibleParameterAnnotations). + * + * The element_value structure has the following format: + */ + class element_value + { + protected: + element_value_type type; + constant_pool & pool; + + public: + element_value(element_value_type type, constant_pool & pool): type(type), pool(pool) {}; + + element_value_type getElementValueType() + { + return type; + } + + virtual std::string toString() = 0; + + static element_value * readElementValue(util::membuffer & input, constant_pool & pool); + }; + + /** + * Each value of the annotations table represents a single runtime-visible annotation on a program element. + * The annotation structure has the following format: + */ + class annotation + { + public: + typedef std::vector< std::pair<uint16_t, element_value * > > value_list; + protected: + /** + * The value of the type_index item must be a valid index into the constant_pool table. + * The constant_pool entry at that index must be a CONSTANT_Utf8_info (§4.4.7) structure + * representing a field descriptor representing the annotation type corresponding + * to the annotation represented by this annotation structure. + */ + uint16_t type_index; + /** + * map between element_name_index and value. + * + * The value of the element_name_index item must be a valid index into the constant_pool table. + * The constant_pool entry at that index must be a CONSTANT_Utf8_info (§4.4.7) structure representing + * a valid field descriptor (§4.3.2) that denotes the name of the annotation type element represented + * by this element_value_pairs entry. + */ + value_list name_val_pairs; + /** + * Reference to the parent constant pool + */ + constant_pool & pool; + public: + annotation(uint16_t type_index, constant_pool& pool):type_index(type_index), pool(pool) {}; + ~annotation() + { + for(unsigned i = 0 ; i < name_val_pairs.size(); i++) + { + delete name_val_pairs[i].second; + } + } + void add_pair(uint16_t key, element_value * value) + { + name_val_pairs.push_back(std::make_pair(key, value)); + }; + value_list::const_iterator begin() + { + return name_val_pairs.cbegin(); + } + value_list::const_iterator end() + { + return name_val_pairs.cend(); + } + std::string toString(); + static annotation * read(util::membuffer & input, constant_pool & pool); + }; + typedef std::vector<annotation *> annotation_table; + + + /// type for simple value annotation elements + class element_value_simple : public element_value + { + protected: + /// index of the constant in the constant pool + uint16_t index; + public: + element_value_simple(element_value_type type, uint16_t index , constant_pool& pool): + element_value(type, pool), index(index) + { + // TODO: verify consistency + }; + uint16_t getIndex() + { + return index; + } + virtual std::string toString() + { + return pool[index].toString(); + }; + }; + /// The enum_const_value item is used if the tag item is 'e'. + class element_value_enum : public element_value + { + protected: + /** + * The value of the type_name_index item must be a valid index into the constant_pool table. + * The constant_pool entry at that index must be a CONSTANT_Utf8_info (§4.4.7) structure + * representing a valid field descriptor (§4.3.2) that denotes the internal form of the binary + * name (§4.2.1) of the type of the enum constant represented by this element_value structure. + */ + uint16_t typeIndex; + /** + * The value of the const_name_index item must be a valid index into the constant_pool table. + * The constant_pool entry at that index must be a CONSTANT_Utf8_info (§4.4.7) structure + * representing the simple name of the enum constant represented by this element_value structure. + */ + uint16_t valueIndex; + public: + element_value_enum(element_value_type type, uint16_t typeIndex, uint16_t valueIndex, constant_pool& pool): + element_value(type, pool), typeIndex(typeIndex), valueIndex(valueIndex) + { + // TODO: verify consistency + } + uint16_t getValueIndex() + { + return valueIndex; + } + uint16_t getTypeIndex() + { + return typeIndex; + } + virtual std::string toString() + { + return "enum value"; + }; + }; + + class element_value_class : public element_value + { + protected: + /** + * The class_info_index item must be a valid index into the constant_pool table. + * The constant_pool entry at that index must be a CONSTANT_Utf8_info (§4.4.7) structure + * representing the return descriptor (§4.3.3) of the type that is reified by the class + * represented by this element_value structure. + * + * For example, 'V' for Void.class, 'Ljava/lang/Object;' for Object, etc. + * + * Or in plain english, you can store type information in annotations. Yay. + */ + uint16_t classIndex; + public: + element_value_class(element_value_type type, uint16_t classIndex, constant_pool& pool): + element_value(type, pool), classIndex(classIndex) + { + // TODO: verify consistency + } + uint16_t getIndex() + { + return classIndex; + } + virtual std::string toString() + { + return "class"; + }; + }; + + /// nested annotations... yay + class element_value_annotation : public element_value + { + private: + annotation * nestedAnnotation; + public: + element_value_annotation(element_value_type type, annotation * nestedAnnotation, constant_pool& pool): + element_value(type, pool), nestedAnnotation(nestedAnnotation) + {}; + ~element_value_annotation() + { + if(nestedAnnotation) + { + delete nestedAnnotation; + nestedAnnotation = nullptr; + } + } + virtual std::string toString() + { + return "nested annotation"; + }; + }; + + /// and arrays! + class element_value_array : public element_value + { + public: + typedef std::vector <element_value *> elem_vec; + protected: + elem_vec values; + public: + element_value_array ( element_value_type type, std::vector <element_value *>& values, constant_pool& pool ): + element_value(type, pool), values(values) + {}; + ~element_value_array () + { + for(unsigned i = 0; i < values.size();i++) + { + delete values[i]; + } + }; + elem_vec::const_iterator begin() + { + return values.cbegin(); + } + elem_vec::const_iterator end() + { + return values.cend(); + } + virtual std::string toString() + { + return "array"; + }; + }; +}
\ No newline at end of file diff --git a/java/classfile.h b/java/classfile.h new file mode 100644 index 00000000..33207e99 --- /dev/null +++ b/java/classfile.h @@ -0,0 +1,153 @@ +#pragma once +#include "membuffer.h" +#include "constants.h" +#include "annotations.h" +#include <map> +namespace java +{ + /** + * Class representing a Java .class file + */ + class classfile : public util::membuffer + { + public: + classfile(char * data, std::size_t size) : membuffer(data, size) + { + valid = false; + is_synthetic = false; + read_be(magic); + if(magic != 0xCAFEBABE) + throw new classfile_exception(); + read_be(minor_version); + read_be(major_version); + constants.load(*this); + read_be(access_flags); + read_be(this_class); + read_be(super_class); + + // Interfaces + uint16_t iface_count = 0; + read_be(iface_count); + while (iface_count) + { + uint16_t iface; + read_be(iface); + interfaces.push_back(iface); + iface_count --; + } + + // Fields + // read fields (and attributes from inside fields) (and possible inner classes. yay for recursion!) + // for now though, we will ignore all attributes + /* + * field_info + * { + * u2 access_flags; + * u2 name_index; + * u2 descriptor_index; + * u2 attributes_count; + * attribute_info attributes[attributes_count]; + * } + */ + uint16_t field_count = 0; + read_be(field_count); + while (field_count) + { + // skip field stuff + skip(6); + // and skip field attributes + uint16_t attr_count = 0; + read_be(attr_count); + while(attr_count) + { + skip(2); + uint32_t attr_length = 0; + read_be(attr_length); + skip(attr_length); + attr_count --; + } + field_count --; + } + + // class methods + /* + * method_info + * { + * u2 access_flags; + * u2 name_index; + * u2 descriptor_index; + * u2 attributes_count; + * attribute_info attributes[attributes_count]; + * } + */ + uint16_t method_count = 0; + read_be(method_count); + while( method_count ) + { + skip(6); + // and skip method attributes + uint16_t attr_count = 0; + read_be(attr_count); + while(attr_count) + { + skip(2); + uint32_t attr_length = 0; + read_be(attr_length); + skip(attr_length); + attr_count --; + } + method_count --; + } + + // class attributes + // there are many kinds of attributes. this is just the generic wrapper structure. + // type is decided by attribute name. extensions to the standard are *possible* + // class annotations are one kind of a attribute (one per class) + /* + * attribute_info + * { + * u2 attribute_name_index; + * u4 attribute_length; + * u1 info[attribute_length]; + * } + */ + uint16_t class_attr_count = 0; + read_be(class_attr_count); + while(class_attr_count) + { + uint16_t name_idx = 0; + read_be(name_idx); + uint32_t attr_length = 0; + read_be(attr_length); + + auto name = constants[name_idx]; + if(name.str_data == "RuntimeVisibleAnnotations") + { + uint16_t num_annotations = 0; + read_be(num_annotations); + while (num_annotations) + { + visible_class_annotations.push_back(annotation::read(*this, constants)); + num_annotations --; + } + } + else skip(attr_length); + class_attr_count --; + } + valid = true; + }; + bool valid; + bool is_synthetic; + uint32_t magic; + uint16_t minor_version; + uint16_t major_version; + constant_pool constants; + uint16_t access_flags; + uint16_t this_class; + uint16_t super_class; + // interfaces this class implements ? must be. investigate. + std::vector<uint16_t> interfaces; + // FIXME: doesn't free up memory on delete + java::annotation_table visible_class_annotations; + }; +}
\ No newline at end of file diff --git a/java/constants.h b/java/constants.h new file mode 100644 index 00000000..2f968d2e --- /dev/null +++ b/java/constants.h @@ -0,0 +1,208 @@ +#pragma once +#include "errors.h" +#include <sstream> + +namespace java +{ + class constant + { + public: + enum type_t:uint8_t + { + j_hole = 0, // HACK: this is a hole in the array, because java is crazy + j_string_data = 1, + j_int = 3, + j_float = 4, + j_long = 5, + j_double = 6, + j_class = 7, + j_string = 8, + j_fieldref = 9, + j_methodref = 10, + j_interface_methodref = 11, + j_nameandtype = 12 + } type; + constant(util::membuffer & buf ) + { + buf.read(type); + // invalid constant type! + if(type > j_nameandtype || type == (type_t)0 || type == (type_t)2) + throw new classfile_exception(); + + // load data depending on type + switch(type) + { + case j_float: + case j_int: + buf.read_be(int_data); // same as float data really + break; + case j_double: + case j_long: + buf.read_be(long_data); // same as double + break; + case j_class: + buf.read_be(ref_type.class_idx); + break; + case j_fieldref: + case j_methodref: + case j_interface_methodref: + buf.read_be(ref_type.class_idx); + buf.read_be(ref_type.name_and_type_idx); + break; + case j_string: + buf.read_be(index); + break; + case j_string_data: + // HACK HACK: for now, we call these UTF-8 and do no further processing. + // Later, we should do some decoding. It's really modified UTF-8 + // * U+0000 is represented as 0xC0,0x80 invalid character + // * any single zero byte ends the string + // * characters above U+10000 are encoded like in CESU-8 + buf.read_jstr(str_data); + break; + case j_nameandtype: + buf.read_be(name_and_type.name_index); + buf.read_be(name_and_type.descriptor_index); + break; + } + } + constant(int fake) + { + type = j_hole; + } + std::string toString() + { + std::ostringstream ss; + switch(type) + { + case j_hole: + ss << "Fake legacy entry"; + break; + case j_float: + ss << "Float: " << float_data; + break; + case j_double: + ss << "Double: " << double_data; + break; + case j_int: + ss << "Int: " << int_data; + break; + case j_long: + ss << "Long: " << long_data; + break; + case j_string_data: + ss << "StrData: " << str_data; + break; + case j_string: + ss << "Str: " << index; + break; + case j_fieldref: + ss << "FieldRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; + break; + case j_methodref: + ss << "MethodRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; + break; + case j_interface_methodref: + ss << "IfMethodRef: " << ref_type.class_idx << " " << ref_type.name_and_type_idx; + break; + case j_class: + ss << "Class: " << ref_type.class_idx; + break; + case j_nameandtype: + ss << "NameAndType: " << name_and_type.name_index << " " << name_and_type.descriptor_index; + break; + } + return ss.str(); + } + + std::string str_data; /** String data in 'modified utf-8'.*/ + // store everything here. + union + { + int32_t int_data; + int64_t long_data; + float float_data; + double double_data; + uint16_t index; + struct + { + /** + * Class reference: + * an index within the constant pool to a UTF-8 string containing + * the fully qualified class name (in internal format) + * Used for j_class, j_fieldref, j_methodref and j_interface_methodref + */ + uint16_t class_idx; + // used for j_fieldref, j_methodref and j_interface_methodref + uint16_t name_and_type_idx; + } ref_type; + struct + { + uint16_t name_index; + uint16_t descriptor_index; + } name_and_type; + }; + }; + /** + * A helper class that represents the custom container used in Java class file for storage of constants + */ + class constant_pool + { + public: + /** + * Create a pool of constants + */ + constant_pool(){} + /** + * Load a java constant pool + */ + void load(util::membuffer & buf) + { + uint16_t length = 0; + buf.read_be(length); + length --; + uint16_t index = 1; + const constant * last_constant = nullptr; + while(length) + { + const constant & cnst = constant(buf); + constants.push_back(cnst); + last_constant = &constants[constants.size() - 1]; + if(last_constant->type == constant::j_double || last_constant->type == constant::j_long) + { + // push in a fake constant to preserve indexing + constants.push_back(constant(0)); + length-=2; + index+=2; + } + else + { + length--; + index++; + } + } + }; + typedef std::vector<java::constant> container_type; + /** + * Access constants based on jar file index numbers (index of the first element is 1) + */ + java::constant & operator[](std::size_t constant_index) + { + if(constant_index == 0 || constant_index > constants.size()) + { + throw new classfile_exception(); + } + return constants[constant_index - 1]; + }; + container_type::const_iterator begin() const + { + return constants.begin(); + }; + container_type::const_iterator end() const + { + return constants.end(); + } + private: + container_type constants; + }; +} diff --git a/java/endian.h b/java/endian.h new file mode 100644 index 00000000..fa6207fe --- /dev/null +++ b/java/endian.h @@ -0,0 +1,62 @@ +#pragma once +#include <stdint.h> + +/** + * Swap bytes between big endian and local number representation + */ +namespace util +{ +#ifdef MULTIMC_BIG_ENDIAN +inline uint64_t bigswap(uint64_t x) +{ + return x; +}; +inline uint32_t bigswap(uint32_t x) +{ + return x; +}; +inline uint16_t bigswap(uint16_t x) +{ + return x; +}; +inline int64_t bigswap(int64_t x) +{ + return x; +}; +inline int32_t bigswap(int32_t x) +{ + return x; +}; +inline int16_t bigswap(int16_t x) +{ + return x; +}; +#else +inline uint64_t bigswap(uint64_t x) +{ + return (x>>56) | ((x<<40) & 0x00FF000000000000) | ((x<<24) & 0x0000FF0000000000) | ((x<<8) & 0x000000FF00000000) | + ((x>>8) & 0x00000000FF000000) | ((x>>24) & 0x0000000000FF0000) | ((x>>40) & 0x000000000000FF00) | (x<<56); +}; +inline uint32_t bigswap(uint32_t x) +{ + return (x>>24) | ((x<<8) & 0x00FF0000) | ((x>>8) & 0x0000FF00) | (x<<24); +}; +inline uint16_t bigswap(uint16_t x) +{ + return (x>>8) | (x<<8); +}; +inline int64_t bigswap(int64_t x) +{ + return (x>>56) | ((x<<40) & 0x00FF000000000000) | ((x<<24) & 0x0000FF0000000000) | ((x<<8) & 0x000000FF00000000) | + ((x>>8) & 0x00000000FF000000) | ((x>>24) & 0x0000000000FF0000) | ((x>>40) & 0x000000000000FF00) | (x<<56); +}; +inline int32_t bigswap(int32_t x) +{ + return (x>>24) | ((x<<8) & 0x00FF0000) | ((x>>8) & 0x0000FF00) | (x<<24); +}; +inline int16_t bigswap(int16_t x) +{ + return (x>>8) | (x<<8); +}; +#endif +} diff --git a/java/errors.h b/java/errors.h new file mode 100644 index 00000000..c02b07c8 --- /dev/null +++ b/java/errors.h @@ -0,0 +1,6 @@ +#pragma once +#include <exception> +namespace java +{ + class classfile_exception : public std::exception {}; +} diff --git a/java/javautils.cpp b/java/javautils.cpp new file mode 100644 index 00000000..a07d1541 --- /dev/null +++ b/java/javautils.cpp @@ -0,0 +1,69 @@ +#include "multimc_pragma.h" +#include "classfile.h" +#include "javautils.h" +//#include <wx/zipstrm.h> +#include <memory> +//#include <wx/wfstream.h> +//#include "mcversionlist.h" + +namespace javautils +{ +QString GetMinecraftJarVersion(QString jar) +{ + return "Unknown"; + /* + wxString fullpath = jar.GetFullPath(); + wxString version = MCVer_Unknown; + if(!jar.FileExists()) + return version; + std::auto_ptr<wxZipEntry> entry; + // convert the local name we are looking for into the internal format + wxString name = wxZipEntry::GetInternalName("net/minecraft/client/Minecraft.class",wxPATH_UNIX); + + // open the zip + wxFFileInputStream inStream(jar.GetFullPath()); + wxZipInputStream zipIn(inStream); + + // call GetNextEntry() until the required internal name is found + do + { + entry.reset(zipIn.GetNextEntry()); + } + while (entry.get() != NULL && entry->GetInternalName() != name); + auto myentry = entry.get(); + if (myentry == NULL) + return version; + + // we got the entry, read the data + std::size_t size = myentry->GetSize(); + char *classdata = new char[size]; + zipIn.Read(classdata,size); + try + { + char * temp = classdata; + java::classfile Minecraft_jar(temp,size); + auto cnst = Minecraft_jar.constants; + auto iter = cnst.begin(); + while (iter != cnst.end()) + { + const java::constant & constant = *iter; + if(constant.type != java::constant::j_string_data) + { + iter++; + continue; + } + auto & str = constant.str_data; + const char * lookfor = "Minecraft Minecraft "; // length = 20 + if(str.compare(0,20,lookfor) == 0) + { + version = str.substr(20).data(); + break; + } + iter++; + } + } catch(java::classfile_exception &){} + delete[] classdata; + return version; + */ +} +}
\ No newline at end of file diff --git a/java/javautils.h b/java/javautils.h new file mode 100644 index 00000000..c8b5a793 --- /dev/null +++ b/java/javautils.h @@ -0,0 +1,9 @@ +#pragma once +#include <QString> +namespace javautils +{ + /* + * Get the version from a minecraft.jar by parsing its class files. Expensive! + */ + QString GetMinecraftJarVersion(QString jar); +}
\ No newline at end of file diff --git a/java/membuffer.h b/java/membuffer.h new file mode 100644 index 00000000..48304b9f --- /dev/null +++ b/java/membuffer.h @@ -0,0 +1,64 @@ +#pragma once +#include <stdint.h> +#include <string> +#include <vector> +#include <exception> +#include "endian.h" + +namespace util +{ + class membuffer + { + public: + membuffer(char * buffer, std::size_t size) + { + current = start = buffer; + end = start + size; + } + ~membuffer() + { + // maybe? possibly? left out to avoid confusion. for now. + //delete start; + } + /** + * Read some value. That's all ;) + */ + template <class T> + void read(T& val) + { + val = *(T *)current; + current += sizeof(T); + } + /** + * Read a big-endian number + * valid for 2-byte, 4-byte and 8-byte variables + */ + template <class T> + void read_be(T& val) + { + val = util::bigswap(*(T *)current); + current += sizeof(T); + } + /** + * Read a string in the format: + * 2B length (big endian, unsigned) + * length bytes data + */ + void read_jstr(std::string & str) + { + uint16_t length = 0; + read_be(length); + str.append(current,length); + current += length; + } + /** + * Skip N bytes + */ + void skip (std::size_t N) + { + current += N; + } + private: + char * start, *end, *current; + }; +} diff --git a/java/test.cpp b/java/test.cpp new file mode 100644 index 00000000..f73e3c21 --- /dev/null +++ b/java/test.cpp @@ -0,0 +1,35 @@ + +#include "classfile.h" +#include "annotations.h" +#include <fstream> +#include <iostream> + +int main(int argc, char* argv[]) +{ + if(argc > 1) + { + std::ifstream file_in(argv[1]); + if(file_in.is_open()) + { + file_in.seekg(0, std::_S_end); + auto length = file_in.tellg(); + char * data = new char[length]; + file_in.seekg(0); + file_in.read(data,length); + java::classfile cf (data, length); + java::annotation_table atable = cf.visible_class_annotations; + for(int i = 0; i < atable.size(); i++) + { + std::cout << atable[i]->toString() << std::endl; + } + return 0; + } + else + { + std::cerr << "Failed to open file : " << argv[1] << std::endl; + return 1; + } + } + std::cerr << "No file to open :(" << std::endl; + return 1; +}
\ No newline at end of file |