const char *
MOFile::get_string(const struct mo_table_entry *entry) const
{
unsigned length = import_uint32(entry->length);
unsigned offset = import_uint32(entry->offset);
if (offset >= size || length >= size || (offset + length) >= size)
/* overflow */
return NULL;
const char *p = (const char *)(data + offset);
if (p[length] != 0 || strlen(p) != length)
/* invalid string */
return NULL;
return p;
}
MOFile::MOFile(const TCHAR *path)
:mapping(path), count(0) {
if (mapping.error())
return;
const struct mo_header *header = (const struct mo_header *)mapping.data();
if (mapping.size() < sizeof(*header))
return;
if (header->magic == 0x950412de)
native_byte_order = true;
else if (header->magic == 0xde120495)
native_byte_order = false;
else
/* invalid magic */
return;
unsigned n = import_uint32(header->num_strings);
if (n >= 0x100000)
return;
strings.resize_discard(n);
const struct mo_table_entry *entry = (const struct mo_table_entry *)
mapping.at(import_uint32(header->original_table_offset));
for (unsigned i = 0; i < n; ++i) {
strings[i].original = get_string(entry++);
if (strings[i].original == NULL)
return;
}
entry = (const struct mo_table_entry *)
mapping.at(import_uint32(header->translation_table_offset));
for (unsigned i = 0; i < n; ++i) {
strings[i].translation = get_string(entry++);
if (strings[i].translation == NULL)
return;
}
count = n;
}
MOFile::MOFile(const void *_data, size_t _size)
:data((const uint8_t *)_data), size(_size), count(0) {
const struct mo_header *header = (const struct mo_header *)_data;
if (size < sizeof(*header))
return;
if (header->magic == 0x950412de)
native_byte_order = true;
else if (header->magic == 0xde120495)
native_byte_order = false;
else
/* invalid magic */
return;
unsigned n = import_uint32(header->num_strings);
if (n >= 0x100000)
return;
strings.ResizeDiscard(n);
const struct mo_table_entry *entry = (const struct mo_table_entry *)
(const void *)(data + import_uint32(header->original_table_offset));
for (unsigned i = 0; i < n; ++i) {
strings[i].original = get_string(entry++);
if (strings[i].original == NULL)
return;
}
entry = (const struct mo_table_entry *)(const void *)
(data + import_uint32(header->translation_table_offset));
for (unsigned i = 0; i < n; ++i) {
strings[i].translation = get_string(entry++);
if (strings[i].translation == NULL)
return;
}
count = n;
}
