int64 StringUtil::CRC32(CStrRef input) {
return string_crc32(input, input.size());
}
int64_t StringUtil::CRC32(CStrRef input) {
return string_crc32(input.data(), input.size());
}
irom app_action_t application_function_ota_send(const string_t *src, string_t *dst)
{
int chunk_offset, chunk_length, remote_chunk_length;
uint32_t crc, remote_crc;
app_action_t action;
if((ota_state != state_write) && (ota_state != state_verify))
{
string_cat(dst, "OTA: not active\n");
ota_state = state_inactive;
return(app_action_error);
}
if(parse_int(1, src, &remote_chunk_length, 0) != parse_ok)
{
string_cat(dst, "OTA: missing chunk length\n");
ota_state = state_inactive;
return(app_action_error);
}
if(parse_int(2, src, &remote_crc, 0) != parse_ok)
{
string_cat(dst, "OTA: missing crc\n");
ota_state = state_inactive;
return(app_action_error);
}
if((chunk_offset = string_sep(src, 0, 3, ' ')) < 0)
{
string_cat(dst, "OTA: missing data chunk\n");
ota_state = state_inactive;
return(app_action_error);
}
if((chunk_length = string_length(src) - chunk_offset) != remote_chunk_length)
{
string_format(dst, "OTA: chunk length mismatch: %d != %d\n", remote_chunk_length, chunk_length);
ota_state = state_inactive;
return(app_action_error);
}
if((crc = string_crc32(src, chunk_offset, chunk_length)) != remote_crc)
{
string_format(dst, "OTA: CRC mismatch %08x != %08x\n", remote_crc, crc);
ota_state = state_inactive;
return(app_action_error);
}
string_splice(&buffer_4k, src, chunk_offset, chunk_length);
if(string_length(&buffer_4k) > 0x1000)
{
string_format(dst, "OTA: unaligned %u\n", string_length(&buffer_4k));
ota_state = state_inactive;
return(app_action_error);
}
if((string_length(&buffer_4k) == 0x1000) &&
((action = flash_write_verify(src, dst)) != app_action_normal))
{
ota_state = state_inactive;
return(action);
}
string_format(dst, "ACK %d\n", received);
return(app_action_normal);
}
