From 122d8d7e63f5c5c2bf81143ef655e964d3982cfd Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Fri, 27 May 2022 12:43:19 +0800
Subject: [PATCH] MtpServer: Support creation time

Only available on boost >= 1.75.0 and kernel >= 4.11.

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
 CMakeLists.txt             | 3 ++-
 include/MtpDatabase.h      | 3 ++-
 server/UbuntuMtpDatabase.h | 9 ++++++++-
 src/MtpServer.cpp          | 9 +++++++--
 tests/MockMtpDatabase.h    | 3 ++-
 5 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 707b7f8..a2d7bd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,7 +13,8 @@ set(MTP_VERSION_MAJOR 1)
 set(MTP_VERSION_MINOR 0)
 set(MTP_VERSION_PATCH 0)
 
-find_package(Boost REQUIRED COMPONENTS thread system filesystem unit_test_framework)
+# Request 1.75.0 for filesystem creation_time operation.
+find_package(Boost 1.75.0 REQUIRED COMPONENTS thread system filesystem unit_test_framework)
 pkg_check_modules(DBUSCPP REQUIRED dbus-c++-1)
 pkg_check_modules(GLOG REQUIRED libglog)
 
diff --git a/include/MtpDatabase.h b/include/MtpDatabase.h
index c72964c..203b33f 100644
--- a/include/MtpDatabase.h
+++ b/include/MtpDatabase.h
@@ -45,7 +45,8 @@ public:
                                             MtpObjectHandle parent,
                                             MtpStorageID storage,
                                             uint64_t size,
-                                            time_t modified) = 0;
+                                            time_t modified,
+                                            time_t created) = 0;
 
     // called to report success or failure of the SendObject file transfer
     // success should signal a notification of the new object's creation,
diff --git a/server/UbuntuMtpDatabase.h b/server/UbuntuMtpDatabase.h
index 73200de..6078c31 100644
--- a/server/UbuntuMtpDatabase.h
+++ b/server/UbuntuMtpDatabase.h
@@ -68,6 +68,7 @@ private:
         std::string path;
         int watch_fd;
         std::time_t last_modified;
+        std::time_t creation;
     };
 
     MtpServer* local_server;
@@ -134,6 +135,7 @@ private:
             entry.object_size = 0;
             entry.watch_fd = setup_dir_inotify(p);
             entry.last_modified = last_write_time(p);
+            entry.creation = creation_time(p);
 
             db.insert( std::pair<MtpObjectHandle, DbEntry>(handle, entry) );
 
@@ -150,6 +152,7 @@ private:
                 entry.object_format = guess_object_format(p.extension().string());
                 entry.object_size = file_size(p);
                 entry.last_modified = last_write_time(p);
+                entry.creation = creation_time(p);
 
                 VLOG(1) << "Adding \"" << p.string() << "\"";
 
@@ -206,6 +209,7 @@ private:
                     entry.object_size = 0;
                     entry.watch_fd = setup_dir_inotify(p);
                     entry.last_modified = last_write_time(p);
+                    entry.creation = creation_time(p);
 
                     db.insert( std::pair<MtpObjectHandle, DbEntry>(handle, entry) );
 
@@ -224,6 +228,7 @@ private:
                     entry.object_size = 0;
                     entry.watch_fd = setup_dir_inotify(p.parent_path());
                     entry.last_modified = 0;
+                    entry.creation = 0;
                 }
             }
         }
@@ -399,7 +404,8 @@ public:
         MtpObjectHandle parent,
         MtpStorageID storage,
         uint64_t size,
-        time_t modified)
+        time_t modified,
+        time_t created)
     {
 	DbEntry entry;
 	MtpObjectHandle handle = counter;
@@ -417,6 +423,7 @@ public:
         entry.object_format = format;
         entry.object_size = size;
         entry.last_modified = modified;
+        entry.creation = created;
 
         db.insert( std::pair<MtpObjectHandle, DbEntry>(handle, entry) );
 
diff --git a/src/MtpServer.cpp b/src/MtpServer.cpp
index fb73ac3..99897c4 100644
--- a/src/MtpServer.cpp
+++ b/src/MtpServer.cpp
@@ -786,7 +786,8 @@ MtpResponseCode MtpServer::doGetObjectInfo() {
         mData.putUInt32(info.mAssociationDesc);
         mData.putUInt32(info.mSequenceNumber);
         mData.putString(info.mName);
-        mData.putEmptyString();    // date created
+        formatDateTime(info.mDateCreated, date, sizeof(date));
+        mData.putString(date);   // date created
         formatDateTime(info.mDateModified, date, sizeof(date));
         mData.putString(date);   // date modified
         mData.putEmptyString();   // keywords
@@ -969,6 +970,10 @@ MtpResponseCode MtpServer::doSendObjectInfo() {
     if (!parseDateTime(modified, modifiedTime))
         modifiedTime = 0;
 
+    time_t createdTime;
+    if (!parseDateTime(created, createdTime))
+        createdTime = 0;
+
     if (path[path.size() - 1] != '/')
         path += "/";
     path += (const char *)name;
@@ -988,7 +993,7 @@ MtpResponseCode MtpServer::doSendObjectInfo() {
     VLOG(2) << "path: " << path.c_str() << " parent: " << parent
             << " storageID: " << std::hex << storageID << std::dec;
     MtpObjectHandle handle = mDatabase->beginSendObject(path.c_str(),
-            format, parent, storageID, mSendObjectFileSize, modifiedTime);
+            format, parent, storageID, mSendObjectFileSize, modifiedTime, createdTime);
     if (handle == kInvalidObjectHandle) {
         return MTP_RESPONSE_GENERAL_ERROR;
     }
diff --git a/tests/MockMtpDatabase.h b/tests/MockMtpDatabase.h
index 1a10857..61f6817 100644
--- a/tests/MockMtpDatabase.h
+++ b/tests/MockMtpDatabase.h
@@ -88,7 +88,8 @@ public:
         MtpObjectHandle parent,
         MtpStorageID storage,
         uint64_t size,
-        time_t modified)
+        time_t modified,
+        time_t created)
     {
         return 1;
     }
-- 
2.20.1