[MQTT] fppd_status add additional fields

Add Hostname, Description, and Platform.
This addresses part of the requirements in #1782

src/common.cpp

@@ -673,4 +673,10 @@ void SetThreadName(const std::string& name) {
 #else
     pthread_setname_np(pthread_self(), name.c_str());
 #endif
+}
+
+std::string getPlatform() {
+    std::string platform = GetFileContents("/etc/fpp/platform");
+    TrimWhiteSpace(platform);
+    return platform;
 }

src/common.h

@@ -28,14 +28,14 @@
 
 #define PRINTF_BINARY_PATTERN_INT8 "%c%c%c%c%c%c%c%c"
 #define PRINTF_BYTE_TO_BINARY_INT8(i) \
-    (((i) & 0x80ll) ? '1' : '0'),     \
-        (((i) & 0x40ll) ? '1' : '0'), \
-        (((i) & 0x20ll) ? '1' : '0'), \
-        (((i) & 0x10ll) ? '1' : '0'), \
-        (((i) & 0x08ll) ? '1' : '0'), \
-        (((i) & 0x04ll) ? '1' : '0'), \
-        (((i) & 0x02ll) ? '1' : '0'), \
-        (((i) & 0x01ll) ? '1' : '0')
+    (((i)&0x80ll) ? '1' : '0'),       \
+        (((i)&0x40ll) ? '1' : '0'),   \
+        (((i)&0x20ll) ? '1' : '0'),   \
+        (((i)&0x10ll) ? '1' : '0'),   \
+        (((i)&0x08ll) ? '1' : '0'),   \
+        (((i)&0x04ll) ? '1' : '0'),   \
+        (((i)&0x02ll) ? '1' : '0'),   \
+        (((i)&0x01ll) ? '1' : '0')
 
 #define PRINTF_BINARY_PATTERN_INT16 \
     PRINTF_BINARY_PATTERN_INT8 PRINTF_BINARY_PATTERN_INT8
@@ -89,6 +89,8 @@ void RegisterShutdownHandler(const std::function<void(bool)> hook);
 
 void GetCurrentFPPDStatus(Json::Value& result);
 
+std::string getPlatform();
+
 inline std::string toStdStringAndFree(char* v) {
     std::string s = v;
     free(v);

src/httpAPI.cpp

@@ -63,14 +63,20 @@ static std::time_t startupTime = std::time(nullptr);
 */
 void GetCurrentFPPDStatus(Json::Value& result) {
     static std::string UUID = getSetting("SystemUUID");
+    static std::string host_name = getSetting("HostName");
+    static std::string host_description = getSetting("HostDescription");
     static std::string fpp_version = getFPPVersion();
     static std::string fppd_branch = getFPPBranch();
+    static std::string platform = getPlatform();
 
     int mode = getFPPmode();
     result["fppd"] = "running";
     result["version"] = fpp_version;
     result["branch"] = fppd_branch;
+    result["platform"] = platform;
     result["uuid"] = UUID;
+    result["host_name"] = host_name;
+    result["host_description"] = host_description;
     result["mode"] = mode;
     result["mode_name"] = toStdStringAndFree(modeToString(getFPPmode()));
     result["status"] = Player::INSTANCE.GetStatus();