From 52450ed3034b0ba058ea2c9f9baa2d5f78df6a94 Mon Sep 17 00:00:00 2001
From: Trygve Laugstøl <trygvis@inamo.no>
Date: Sat, 17 Nov 2018 22:38:32 +0100
Subject: apps/ble-bts: o Adding start of health termometer service tool.
 apps/ble-read-characteristic: o Sart of new tool. apps/ble-inspect-device o
 Make adapter configurable. other: o UUID fixes and tests.

---
 ble/LinuxBluetooth.cpp | 21 ++++++++-------
 ble/misc.cpp           | 69 ++++++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 76 insertions(+), 14 deletions(-)

(limited to 'ble')

diff --git a/ble/LinuxBluetooth.cpp b/ble/LinuxBluetooth.cpp
index 541093b..e567d62 100644
--- a/ble/LinuxBluetooth.cpp
+++ b/ble/LinuxBluetooth.cpp
@@ -251,15 +251,18 @@ Uuid readUuid(BluetoothDevice *device, ByteBuffer &bytes) {
 
     if (bytesLeft == 2) {
         uint8_t bs[16] = BLUETOOTH_UUID_INITIALIZER;
-        bs[2] = bytes.read8();
         bs[3] = bytes.read8();
+        bs[2] = bytes.read8();
 
         return Uuid(bs);
     } else if (bytesLeft == 16) {
-        return {bytes.read8(), bytes.read8(), bytes.read8(), bytes.read8(),
-                bytes.read8(), bytes.read8(), bytes.read8(), bytes.read8(),
-                bytes.read8(), bytes.read8(), bytes.read8(), bytes.read8(),
-                bytes.read8(), bytes.read8(), bytes.read8(), bytes.read8()};
+        uint8_t bs[16] = {
+                bytes.get8(15), bytes.get8(14), bytes.get8(13), bytes.get8(12), bytes.get8(11), bytes.get8(10), bytes.get8(9), bytes.get8(8),
+                bytes.get8(7), bytes.get8(6), bytes.get8(5), bytes.get8(4), bytes.get8(3), bytes.get8(2), bytes.get8(1), bytes.get8(0),
+        };
+        bytes.skip(16);
+
+        return Uuid{bs};
     } else {
         throw BluetoothException(device, "Unexpected bytes left: " + to_string(bytesLeft));
     }
@@ -368,10 +371,10 @@ void LinuxBluetoothGatt::discoverServices() {
             uint16_t valueHandle = c.value.read16le();
             auto uuid = readUuid(&device, c.value);
 
-//            D << "characteristic: handle: " << setw(2) << setfill('0') << hex << (int) c.handle <<
-//                        ", properties: " << setw(2) << setfill('0') << hex << (int) properties <<
-//                        ", valueHandle: 0x" << setw(4) << setfill('0') << hex << (int) valueHandle <<
-//                        ", uuid: " << uuid;
+            LOG_DEBUG("characteristic: handle: " << setw(2) << setfill('0') << hex << (int) c.handle <<
+                        ", properties: " << setw(2) << setfill('0') << hex << (int) properties <<
+                        ", valueHandle: 0x" << setw(4) << setfill('0') << hex << (int) valueHandle <<
+                        ", uuid: " << uuid);
 
             s->addCharacteristic(std::move(make_shared<DefaultBluetoothGattCharacteristic>(s, c.handle, uuid, properties, valueHandle)));
         }
diff --git a/ble/misc.cpp b/ble/misc.cpp
index b26b99e..a8df2cb 100644
--- a/ble/misc.cpp
+++ b/ble/misc.cpp
@@ -1,11 +1,13 @@
-#include "ble/misc.h"
-
 #include <ble/misc.h>
+#include <sstream>
 #include <string>
+#include <ble/Bluetooth.h>
 
 namespace trygvis {
 namespace bluetooth {
 
+using namespace std;
+
 std::ostream &operator<<(std::ostream &s, Uuid const &uuid) {
     s << uuid.str();
     return s;
@@ -14,13 +16,62 @@ std::ostream &operator<<(std::ostream &s, Uuid const &uuid) {
 std::string Uuid::str() const {
     char str[37];
 
-    std::sprintf(str, "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
-                 value[0], value[1], value[2], value[3], value[4], value[5], value[6], value[7],
-                 value[8], value[9], value[10], value[11], value[12], value[13], value[14], value[15]);
+    std::snprintf(str, sizeof(str), "%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
+                  value[0], value[1], value[2], value[3], value[4], value[5], value[6], value[7],
+                  value[8], value[9], value[10], value[11], value[12], value[13], value[14], value[15]);
 
     return {str};
 }
 
+o<Uuid> Uuid::fromString(const std::string &str) {
+    try {
+        if (str.size() == 4) {
+            unsigned long x = std::stoul(str, nullptr, 16);
+
+            if (x > std::numeric_limits<uint16_t>::max()) {
+                return {};
+            }
+
+            return {ShortUuid{static_cast<uint16_t>(x)}.toLong()};
+        } else if (str.size() == 36) {
+            uint8_t bytes[16];
+
+            unsigned i = 0;
+            for (unsigned byte = 0; byte < 16; byte++) {
+                switch (byte) {
+                    case 4:
+                    case 6:
+                    case 8:
+                    case 10:
+                        i++;
+                        break;
+                    default:
+                        break;
+                }
+
+                auto tmp = str.substr(i, 2);
+                cout << "str=" << tmp << endl;
+                unsigned long x = std::stoul(tmp, nullptr, 16);
+
+                if (x > std::numeric_limits<uint8_t>::max()) {
+                    return {};
+                }
+                bytes[byte] = static_cast<uint8_t>(x);
+
+                i += 2;
+            }
+
+            return {Uuid{bytes}};
+        } else {
+            return {};
+        }
+    } catch (std::invalid_argument &) {
+        return {};
+    } catch (std::out_of_range &) {
+        return {};
+    }
+}
+
 Uuid makeUuid(const Uuid &base, uint8_t a, uint8_t b) {
     uint8_t value[16];
     memcpy(value, base.value, 16);
@@ -29,5 +80,13 @@ Uuid makeUuid(const Uuid &base, uint8_t a, uint8_t b) {
     return Uuid{value};
 }
 
+std::string ShortUuid::str() const noexcept {
+    char str[sizeof("abcd")];
+
+    std::snprintf(str, sizeof(str), "%02x%02x", int(value >> 8), int(value & 0xff));
+
+    return {str};
+}
+
 } // namespace bluetooth
 } // namespace trygvis
-- 
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