Esempio n. 1
0
int
cafebabe_field_info_init(struct cafebabe_field_info *f,
                         struct cafebabe_stream *s)
{
    if (cafebabe_stream_read_uint16(s, &f->access_flags))
        goto out;

    if (cafebabe_stream_read_uint16(s, &f->name_index))
        goto out;

    if (cafebabe_stream_read_uint16(s, &f->descriptor_index))
        goto out;

    if (cafebabe_stream_read_uint16(s, &f->attributes.count))
        goto out;

    f->attributes.array = cafebabe_stream_malloc(s,
                          sizeof(*f->attributes.array) * f->attributes.count);
    if (!f->attributes.array)
        goto out;

    uint16_t attributes_i;
    for (uint16_t i = 0; i < f->attributes.count; ++i) {
        if (cafebabe_attribute_info_init(&f->attributes.array[i], s)) {
            attributes_i = i;
            goto out_attributes_init;
        }
    }
    attributes_i = f->attributes.count;

    return 0;

out_attributes_init:
    for (uint16_t i = 0; i < attributes_i; ++i)
        cafebabe_attribute_info_deinit(&f->attributes.array[i]);
    free(f->attributes.array);
out:
    return 1;
}
Esempio n. 2
0
int
cafebabe_code_attribute_init(struct cafebabe_code_attribute *a,
	struct cafebabe_stream *s)
{
	if (cafebabe_stream_read_uint16(s, &a->max_stack))
		goto out;

	if (cafebabe_stream_read_uint16(s, &a->max_locals))
		goto out;

	if (cafebabe_stream_read_uint32(s, &a->code_length))
		goto out;

	a->code = cafebabe_stream_pointer(s);
	if (cafebabe_stream_skip(s, a->code_length))
		goto out;

	if (cafebabe_stream_read_uint16(s, &a->exception_table_length))
		goto out;

	a->exception_table = cafebabe_stream_malloc(s,
		sizeof(*a->exception_table) * a->exception_table_length);
	if (!a->exception_table)
		goto out;

	for (uint16_t i = 0; i < a->exception_table_length; ++i) {
		struct cafebabe_code_attribute_exception *e
			= &a->exception_table[i];

		if (cafebabe_stream_read_uint16(s, &e->start_pc))
			goto out_exception_table;

		if (cafebabe_stream_read_uint16(s, &e->end_pc))
			goto out_exception_table;

		if (cafebabe_stream_read_uint16(s, &e->handler_pc))
			goto out_exception_table;

		if (cafebabe_stream_read_uint16(s, &e->catch_type))
			goto out_exception_table;
	}

	if (cafebabe_stream_read_uint16(s, &a->attributes.count))
		goto out_exception_table;

	a->attributes.array = cafebabe_stream_malloc(s,
		sizeof(*a->attributes.array) * a->attributes.count);
	if (!a->attributes.array)
		goto out_exception_table;

	uint16_t attributes_i;
	for (uint16_t i = 0; i < a->attributes.count; ++i) {
		if (cafebabe_attribute_info_init(&a->attributes.array[i], s)) {
			attributes_i = i;
			goto out_attributes_init;
		}
	}
	attributes_i = a->attributes.count;

	if (!cafebabe_stream_eof(s)) {
		s->cafebabe_errno = CAFEBABE_ERROR_EXPECTED_EOF;
		goto out_attributes_init;
	}

	/* Success */
	return 0;

out_attributes_init:
	for (uint16_t i = 0; i < attributes_i; ++i)
		cafebabe_attribute_info_deinit(&a->attributes.array[i]);
	free(a->attributes.array);
out_exception_table:
	free(a->exception_table);
out:
	return 1;
}