ringaccount: use loadFile, saveFile from fileutils

Refs #67228

Change-Id: Ic13ea4d0b27de7fe7829f2b5b43171eba68e5d0c

src/ringdht/ringaccount.cpp

@@ -423,35 +423,6 @@ RingAccount::checkIdentityPath()
     loadIdentity();
 }
 
-std::vector<uint8_t>
-loadFile(const std::string& path)
-{
-    std::vector<uint8_t> buffer;
-    std::ifstream file(path, std::ios::binary);
-    if (!file)
-        throw std::runtime_error("Can't read file: "+path);
-    file.seekg(0, std::ios::end);
-    std::streamsize size = file.tellg();
-    if (size > std::numeric_limits<unsigned>::max())
-        throw std::runtime_error("File is too big: "+path);
-    buffer.resize(size);
-    file.seekg(0, std::ios::beg);
-    if (!file.read((char*)buffer.data(), size))
-        throw std::runtime_error("Can't load file: "+path);
-    return buffer;
-}
-
-void
-saveFile(const std::string& path, const std::vector<uint8_t>& data)
-{
-    std::ofstream file(path, std::ios::trunc | std::ios::binary);
-    if (!file.is_open()) {
-        RING_ERR("Could not write data to %s", path.c_str());
-        return;
-    }
-    file.write((char*)data.data(), data.size());
-}
-
 std::pair<std::shared_ptr<dht::crypto::Certificate>, dht::crypto::Identity>
 RingAccount::loadIdentity()
 {
@@ -877,7 +848,7 @@ void RingAccount::doUnregister(std::function<void(bool)> released_cb)
 void
 RingAccount::registerCA(const dht::crypto::Certificate& crt)
 {
-    saveFile(caPath_ + DIR_SEPARATOR_STR + crt.getPublicKey().getId().toString(), crt.getPacked());
+    fileutils::saveFile(caPath_ + DIR_SEPARATOR_STR + crt.getPublicKey().getId().toString(), crt.getPacked());
 }
 
 bool
@@ -887,7 +858,7 @@ RingAccount::unregisterCA(const dht::InfoHash& crt_id)
     bool deleted = false;
     for (const auto& ca_path : cas) {
         try {
-            dht::crypto::Certificate tmp_crt(loadFile(ca_path));
+            dht::crypto::Certificate tmp_crt(fileutils::loadFile(ca_path));
             if (tmp_crt.getPublicKey().getId() == crt_id)
                 deleted &= remove(ca_path.c_str()) == 0;
         } catch (const std::exception&) {}