[MTX-3785] mPower R.5.4: GP-971 - Device shall implement file type restrictions for all “upload” sections on the UI

LoRaWAN components: LoraLicense (.lic), LoraFotaFile (.bin), LoraMulticast (.bin for Binary, .txt for Hexadecimal and Base64), LoraGroup (.json) validated by file extension.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/MTS_Text.cpp b/src/MTS_Text.cpp
index d823bfe..8dcb85f 100644
--- a/src/MTS_Text.cpp
+++ b/src/MTS_Text.cpp
@@ -699,3 +699,10 @@ bool Text::parseHex(uint64_t& value, const std::string& str) {
     return ((uint8_t) ss.rdstate() == RDSTATE_SUCCESS_MASK);
 }
 
+std::string Text::getFileExtension(const std::string& filename) {
+   size_t pos = filename.rfind('.', filename.length());
+   if (pos != std::string::npos) {
+      return (filename.substr(pos + 1, filename.length() - pos));
+   }
+   return ("");
+}