244 lines
7.0 KiB
C++
244 lines
7.0 KiB
C++
#include "wled.h"
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#ifdef WLED_DEBUG_IMPROV
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#define DIMPROV_PRINT(x) Serial.print(x)
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#define DIMPROV_PRINTLN(x) Serial.println(x)
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#define DIMPROV_PRINTF(x...) Serial.printf(x)
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#else
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#define DIMPROV_PRINT(x)
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#define DIMPROV_PRINTLN(x)
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#define DIMPROV_PRINTF(x...)
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#endif
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#define IMPROV_VERSION 1
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void parseWiFiCommand(char *rpcData);
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enum ImprovPacketType {
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Current_State = 0x01,
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Error_State = 0x02,
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RPC_Command = 0x03,
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RPC_Response = 0x04
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};
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enum ImprovPacketByte {
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Version = 6,
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PacketType = 7,
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Length = 8,
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RPC_CommandType = 9
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};
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enum ImprovRPCType {
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Command_Wifi = 0x01,
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Request_State = 0x02,
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Request_Info = 0x03
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};
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//File dbgf;
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//blocking function to parse an Improv Serial packet
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void handleImprovPacket() {
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uint8_t header[6] = {'I','M','P','R','O','V'};
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//dbgf = WLED_FS.open("/improv.log","a");
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bool timeout = false;
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uint8_t waitTime = 25;
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uint16_t packetByte = 0;
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uint8_t packetLen = 9;
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uint8_t checksum = 0;
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uint8_t rpcCommandType = 0;
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char rpcData[128];
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rpcData[0] = 0;
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while (!timeout) {
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if (Serial.available() < 1) {
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delay(1);
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waitTime--;
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if (!waitTime) timeout = true;
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continue;
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}
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byte next = Serial.read();
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DIMPROV_PRINT("Received improv byte: "); DIMPROV_PRINTF("%x\r\n",next);
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//f.write(next);
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switch (packetByte) {
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case ImprovPacketByte::Version: {
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if (next != IMPROV_VERSION) {
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DIMPROV_PRINTLN(F("Invalid version"));
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//dbgf.close();
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return;
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}
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break;
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}
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case ImprovPacketByte::PacketType: {
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if (next != ImprovPacketType::RPC_Command) {
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DIMPROV_PRINTF("Non RPC-command improv packet type %i\n",next);
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//dbgf.close();
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return;
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}
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if (!improvActive) improvActive = 1;
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break;
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}
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case ImprovPacketByte::Length: packetLen = 9 + next; break;
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case ImprovPacketByte::RPC_CommandType: rpcCommandType = next; break;
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default: {
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if (packetByte >= packetLen) { //end of packet, check checksum match
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if (checksum != next) {
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DIMPROV_PRINTF("Got RPC checksum %i, expected %i",next,checksum);
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sendImprovStateResponse(0x01, true);
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//dbgf.close();
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return;
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}
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switch (rpcCommandType) {
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case ImprovRPCType::Command_Wifi: parseWiFiCommand(rpcData); break;
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case ImprovRPCType::Request_State: {
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uint8_t improvState = 0x02; //authorized
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if (WLED_WIFI_CONFIGURED) improvState = 0x03; //provisioning
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if (Network.isConnected()) improvState = 0x04; //provisioned
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sendImprovStateResponse(improvState, false);
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if (improvState == 0x04) sendImprovRPCResponse(ImprovRPCType::Request_State);
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break;
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}
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case ImprovRPCType::Request_Info: sendImprovInfoResponse(); break;
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default: {
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DIMPROV_PRINTF("Unknown RPC command %i\n",next);
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sendImprovStateResponse(0x02, true);
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}
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}
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//dbgf.close();
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return;
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}
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if (packetByte < 6) { //check header
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if (next != header[packetByte]) {
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DIMPROV_PRINTLN(F("Invalid improv header"));
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//dbgf.close();
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return;
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}
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} else if (packetByte > 9) { //RPC data
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rpcData[packetByte - 10] = next;
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if (packetByte > 137) return; //prevent buffer overflow
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}
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}
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}
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checksum += next;
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packetByte++;
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}
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//dbgf.close();
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}
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void sendImprovStateResponse(uint8_t state, bool error) {
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if (!error && improvError > 0 && improvError < 3) sendImprovStateResponse(0x00, true);
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if (error) improvError = state;
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char out[11] = {'I','M','P','R','O','V'};
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out[6] = IMPROV_VERSION;
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out[7] = error? ImprovPacketType::Error_State : ImprovPacketType::Current_State;
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out[8] = 1;
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out[9] = state;
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uint8_t checksum = 0;
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for (uint8_t i = 0; i < 10; i++) checksum += out[i];
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out[10] = checksum;
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Serial.write((uint8_t*)out, 11);
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Serial.write('\n');
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}
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void sendImprovRPCResponse(byte commandId) {
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if (improvError > 0 && improvError < 3) sendImprovStateResponse(0x00, true);
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uint8_t packetLen = 12;
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char out[64] = {'I','M','P','R','O','V'};
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out[6] = IMPROV_VERSION;
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out[7] = ImprovPacketType::RPC_Response;
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out[8] = 2; //Length (set below)
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out[9] = commandId;
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out[10] = 0; //Data len (set below)
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out[11] = '\0'; //URL len (set below)
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if (Network.isConnected())
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{
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IPAddress localIP = Network.localIP();
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uint8_t len = sprintf(out+12, "http://%d.%d.%d.%d", localIP[0], localIP[1], localIP[2], localIP[3]);
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if (len > 24) return; //sprintf fail?
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out[11] = len;
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out[10] = 1 + len;
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out[8] = 3 + len; //RPC command type + data len + url len + url
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packetLen = 13 + len;
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}
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uint8_t checksum = 0;
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for (uint8_t i = 0; i < packetLen -1; i++) checksum += out[i];
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out[packetLen -1] = checksum;
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Serial.write((uint8_t*)out, packetLen);
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Serial.write('\n');
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improvActive = 1; //no longer provisioning
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}
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void sendImprovInfoResponse() {
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if (improvError > 0 && improvError < 3) sendImprovStateResponse(0x00, true);
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uint8_t packetLen = 12;
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char out[128] = {'I','M','P','R','O','V'};
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out[6] = IMPROV_VERSION;
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out[7] = ImprovPacketType::RPC_Response;
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//out[8] = 2; //Length (set below)
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out[9] = ImprovRPCType::Request_Info;
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//out[10] = 0; //Data len (set below)
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out[11] = 4; //Firmware len ("WLED")
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out[12] = 'W'; out[13] = 'L'; out[14] = 'E'; out[15] = 'D';
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uint8_t lengthSum = 17;
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uint8_t vlen = sprintf_P(out+lengthSum,PSTR("0.13.2-bl0/%i"),VERSION);
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out[16] = vlen; lengthSum += vlen;
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uint8_t hlen = 7;
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#ifdef ESP8266
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strcpy(out+lengthSum+1,"esp8266");
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#else
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hlen = 5;
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strcpy(out+lengthSum+1,"esp32");
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#endif
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out[lengthSum] = hlen;
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lengthSum += hlen + 1;
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//Use serverDescription if it has been changed from the default "WLED", else mDNS name
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bool useMdnsName = (strcmp(serverDescription, "WLED") == 0 && strlen(cmDNS) > 0);
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strcpy(out+lengthSum+1,useMdnsName ? cmDNS : serverDescription);
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uint8_t nlen = strlen(useMdnsName ? cmDNS : serverDescription);
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out[lengthSum] = nlen;
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lengthSum += nlen + 1;
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packetLen = lengthSum +1;
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out[8] = lengthSum -9;
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out[10] = lengthSum -11;
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uint8_t checksum = 0;
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for (uint8_t i = 0; i < packetLen -1; i++) checksum += out[i];
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out[packetLen -1] = checksum;
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Serial.write((uint8_t*)out, packetLen);
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Serial.write('\n');
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DIMPROV_PRINT("Info checksum");
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DIMPROV_PRINTLN(checksum);
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}
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void parseWiFiCommand(char* rpcData) {
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uint8_t len = rpcData[0];
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if (!len || len > 126) return;
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uint8_t ssidLen = rpcData[1];
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if (ssidLen > len -1 || ssidLen > 32) return;
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memset(clientSSID, 0, 32);
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memcpy(clientSSID, rpcData+2, ssidLen);
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memset(clientPass, 0, 64);
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if (len > ssidLen +1) {
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uint8_t passLen = rpcData[2+ssidLen];
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memset(clientPass, 0, 64);
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memcpy(clientPass, rpcData+3+ssidLen, passLen);
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}
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sendImprovStateResponse(0x03); //provisioning
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improvActive = 2;
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forceReconnect = true;
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serializeConfig();
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} |