Merge pull request #623 from geeksville/dev

Dev

platformio.ini

@@ -183,7 +183,7 @@ build_flags =
   -Isdk-nrfxlib/crypto/nrf_oberon/include -Lsdk-nrfxlib/crypto/nrf_oberon/lib/cortex-m4/hard-float/ -lliboberon_3.0.3 
 ;-DCFG_DEBUG=3
 src_filter = 
-  ${arduino_base.src_filter} -<esp32/> -<nimble/> -<meshwifi/>
+  ${arduino_base.src_filter} -<esp32/> -<nimble/> -<meshwifi/> -<mesh/wifi/>
 lib_ignore =
   BluetoothOTA
 monitor_port = /dev/ttyACM1
@@ -314,6 +314,9 @@ src_filter = ${env.src_filter} -<esp32/> -<nimble/> -<nrf52/> -<meshwifi/>
 build_flags = ${arduino_base.build_flags} -O0
 framework = arduino
 board = linux_x86_64
+lib_deps =
+  ${arduino_base.lib_deps}
+  rweather/Crypto
 
 ; The GenieBlocks LORA prototype board
 [env:genieblocks_lora]

src/configuration.h

@@ -402,7 +402,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RF95_SCK 5
 #define RF95_MISO 19
 #define RF95_MOSI 27
-#define RF95_NSS 18
+#define RF95_NSS RADIOLIB_NC // the ch341f spi controller does CS for us
 
 #endif
 

src/mesh/wifi/WiFiServerAPI.cpp

@@ -5,7 +5,7 @@
 
 WiFiServerAPI::WiFiServerAPI(WiFiClient &_client) : StreamAPI(&client), client(_client)
 {
-    DEBUG_MSG("Incoming connection from %s\n", client.remoteIP().toString().c_str());
+    DEBUG_MSG("Incoming wifi connection\n");
 }
 
 WiFiServerAPI::~WiFiServerAPI()

src/meshwifi/meshwifi.cpp

@@ -1,6 +1,6 @@
 #include "meshwifi.h"
 #include "NodeDB.h"
-#include "WiFiServerAPI.h"
+#include "mesh/wifi/WiFiServerAPI.h"
 #include "configuration.h"
 #include "main.h"
 #include "meshwifi/meshhttp.h"

src/plugins/PositionPlugin.cpp

@@ -31,10 +31,16 @@ MeshPacket *PositionPlugin::allocReply()
 {
     NodeInfo *node = nodeDB.getNode(nodeDB.getNodeNum());
     assert(node);
-    assert(node->has_position);
+
+    // We might not have a position yet for our local node, in that case, at least try to send the time
+    if(!node->has_position) {
+        memset(&node->position, 0, sizeof(node->position));
+        node->has_position = true;
+    }
+    
+    Position &position = node->position;
 
     // Update our local node info with our position (even if we don't decide to update anyone else)
-    auto position = node->position;
     position.time = getValidTime(RTCQualityGPS); // This nodedb timestamp might be stale, so update it if our clock is valid.
 
     return allocDataProtobuf(position);

src/portduino/CrossPlatformCryptoEngine.cpp

@@ -0,0 +1,82 @@
+#include "AES.h"
+#include "CTR.h"
+#include "CryptoEngine.h"
+#include "configuration.h"
+
+/** A platform independent AES engine implemented using Tiny-AES
+ */
+class CrossPlatformCryptoEngine : public CryptoEngine
+{
+
+    CTRCommon *ctr = NULL;
+
+    /// How many bytes in our key
+    uint8_t keySize = 0;
+
+  public:
+    CrossPlatformCryptoEngine() {}
+
+    ~CrossPlatformCryptoEngine() {}
+
+    /**
+     * Set the key used for encrypt, decrypt.
+     *
+     * As a special case: If all bytes are zero, we assume _no encryption_ and send all data in cleartext.
+     *
+     * @param numBytes must be 16 (AES128), 32 (AES256) or 0 (no crypt)
+     * @param bytes a _static_ buffer that will remain valid for the life of this crypto instance (i.e. this class will cache the
+     * provided pointer)
+     */
+    virtual void setKey(size_t numBytes, uint8_t *bytes)
+    {
+        keySize = numBytes;
+        DEBUG_MSG("Installing AES%d key!\n", numBytes * 8);
+        if (ctr) {
+            delete ctr;
+            ctr = NULL;
+        }
+        if (numBytes != 0) {
+            if (numBytes == 16)
+                ctr = new CTR<AES128>();
+            else
+                ctr = new CTR<AES256>();
+
+            ctr->setKey(bytes, numBytes);
+        }
+    }
+
+    /**
+     * Encrypt a packet
+     *
+     * @param bytes is updated in place
+     */
+    virtual void encrypt(uint32_t fromNode, uint64_t packetNum, size_t numBytes, uint8_t *bytes)
+    {
+        if (keySize != 0) {
+            uint8_t stream_block[16];
+            static uint8_t scratch[MAX_BLOCKSIZE];
+            size_t nc_off = 0;
+
+            // DEBUG_MSG("ESP32 encrypt!\n");
+            initNonce(fromNode, packetNum);
+            assert(numBytes <= MAX_BLOCKSIZE);
+            memcpy(scratch, bytes, numBytes);
+            memset(scratch + numBytes, 0,
+                   sizeof(scratch) - numBytes); // Fill rest of buffer with zero (in case cypher looks at it)
+
+            ctr->setIV(nonce, sizeof(nonce));
+            ctr->setCounterSize(4);
+            ctr->encrypt(bytes, scratch, numBytes);
+        }
+    }
+
+    virtual void decrypt(uint32_t fromNode, uint64_t packetNum, size_t numBytes, uint8_t *bytes)
+    {
+        // For CTR, the implementation is the same
+        encrypt(fromNode, packetNum, numBytes, bytes);
+    }
+
+  private:
+};
+
+CryptoEngine *crypto = new CrossPlatformCryptoEngine();

src/portduino/PortduinoGlue.cpp

@@ -35,9 +35,6 @@ void cpuDeepSleep(uint64_t msecs) {
     notImplemented("cpuDeepSleep");
 }
 
-// FIXME - implement real crypto for linux
-CryptoEngine *crypto = new CryptoEngine();
-
 void updateBatteryLevel(uint8_t level) NOT_IMPLEMENTED("updateBatteryLevel");
 
 /** Dear pinetab hardware geeks!
@@ -93,5 +90,5 @@ void  portduinoSetup() {
   printf("Setting up Meshtastic on Porduino...\n");
   gpioBind(new R595PolledIrqPin());
   // gpioBind((new SimGPIOPin(LORA_RESET, "LORA_RESET")));
-  gpioBind((new SimGPIOPin(RF95_NSS, "RF95_NSS"))->setSilent());
+  // gpioBind((new SimGPIOPin(RF95_NSS, "RF95_NSS"))->setSilent());
 }

version.properties

@@ -1,4 +1,4 @@
 [VERSION]  
 major = 1  
 minor = 1
-build = 31
+build = 32