def read_pa(self, paddr, count):
buffer = ffi.new("char[]", count)
bytes_read = ffi.new("size_t *")
status = lib.vmi_read_pa(self.vmi, paddr, count, buffer, bytes_read)
check(status)
# transform into Python bytes
buffer = ffi.unpack(buffer, bytes_read[0])
return (buffer, bytes_read[0])
def read_unicode_str_va(self, vaddr, pid):
value = lib.vmi_read_unicode_str_va(self.vmi, vaddr, pid)
if value == ffi.NULL:
raise LibvmiError('VMI_FAILURE')
encoding = ffi.string(value.encoding).decode()
buffer = bytes(ffi.unpack(value.contents, value.length))
self.free_unicode_str(value)
return buffer.decode(encoding)
def read(self, ctx, count):
buffer = ffi.new("char[]", count)
bytes_read = ffi.new("size_t *")
status = lib.vmi_read(self.vmi, ctx.to_ffi(), count, buffer,
bytes_read)
check(status)
# transform into Python bytes
buffer = ffi.unpack(buffer, bytes_read[0])
return buffer, bytes_read[0]
def read_pa_padded(self, paddr, count):
buffer = ffi.new("char[]", count)
bytes_read = ffi.new("size_t *")
status = lib.vmi_read_pa(self.vmi, paddr, count, buffer, bytes_read)
# transform into Python bytes
buffer = ffi.unpack(buffer, bytes_read[0])
if VMIStatus(status) == VMIStatus.FAILURE:
# pad with zeroes
pad_size = count - bytes_read[0]
buffer += bytes(pad_size)
return buffer
