// called when connection receives data (hopefully the rom)
static void ICACHE_FLASH_ATTR upgrade_recvcb(void *arg, char *pusrdata, unsigned short length) {
char *ptrData, *ptrLen, *ptr;
// disarm the timer
os_timer_disarm(&ota_timer);
// first reply?
if (upgrade->content_len == 0) {
// valid http response?
if ((ptrLen = (char*)os_strstr(pusrdata, "Content-Length: "))
&& (ptrData = (char*)os_strstr(ptrLen, "\r\n\r\n"))
&& (os_strncmp(pusrdata + 9, "200", 3) == 0)) {
// end of header/start of data
ptrData += 4;
// length of data after header in this chunk
length -= (ptrData - pusrdata);
// running total of download length
upgrade->total_len += length;
// process current chunk
if (!rboot_write_flash(&upgrade->write_status, (uint8*)ptrData, length)) {
// write error
rboot_ota_deinit();
return;
}
// work out total download size
ptrLen += 16;
ptr = (char *)os_strstr(ptrLen, "\r\n");
*ptr = '\0'; // destructive
upgrade->content_len = atoi(ptrLen);
} else {
// fail, not a valid http header/non-200 response/etc.
rboot_ota_deinit();
return;
}
} else {
// not the first chunk, process it
upgrade->total_len += length;
if (!rboot_write_flash(&upgrade->write_status, (uint8*)pusrdata, length)) {
// write error
rboot_ota_deinit();
return;
}
}
// check if we are finished
if (upgrade->total_len == upgrade->content_len) {
system_upgrade_flag_set(UPGRADE_FLAG_FINISH);
// clean up and call user callback
rboot_ota_deinit();
} else if (upgrade->conn->state != ESPCONN_READ) {
// fail, but how do we get here? premature end of stream?
rboot_ota_deinit();
} else {
// timer for next recv
os_timer_setfn(&ota_timer, (os_timer_func_t *)rboot_ota_deinit, 0);
os_timer_arm(&ota_timer, OTA_NETWORK_TIMEOUT, 0);
}
}
void rBootHttpUpdate::writeRawData(pbuf* buf, int startPos) {
pbuf *cur = buf;
while (cur != NULL && cur->len > 0 && !writeError) {
uint8* ptr = (uint8*) cur->payload + startPos;
int len = cur->len - startPos;
writeError = !rboot_write_flash(&rBootWriteStatus, ptr, len);
if (writeError) {
debugf("Write Error!");
}
items[currentItem].size += len;
cur = cur->next;
startPos = 0;
}
}