handle signature status and prepare document signing in WSD

This adds handling of signature status (manually request for the
status or as a callback) in WSD.

In addition prepare support for signing of document, but don't yet
trigger the actual LOKit function (needs the JS building blocks
set up first to know how to handle the payload - certificate and
private key)

Change-Id: Ic76baa5847bb52adde616338187d5979e0093c6d
Reviewed-on: https://gerrit.libreoffice.org/62533
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

5 files changed, 51 insertions, 1 deletions

diff --git a/kit/ChildSession.cpp b/kit/ChildSession.cpp
index 3e6a904ce..4e6c3ef7a 100644
--- a/kit/ChildSession.cpp
+++ b/kit/ChildSession.cpp
@@ -331,6 +331,14 @@ bool ChildSession::_handleInput(const char *buffer, int length)
         {
             sendWindowCommand(buffer, length, tokens);
         }
+        else if (tokens[0] == "signdocument")
+        {
+            signDocumentContent(buffer, length, tokens);
+        }
+        else if (tokens[0] == "asksignaturestatus")
+        {
+            askSignatureStatus(buffer, length, tokens);
+        }
         else
         {
             assert(false && "Unknown command token.");
@@ -1104,6 +1112,21 @@ bool ChildSession::sendWindowCommand(const char* /*buffer*/, int /*length*/, con
     return true;
 }
 
+bool ChildSession::signDocumentContent(const char* /*buffer*/, int /*length*/, const std::vector<std::string>& /*tokens*/)
+{
+    return true;
+}
+
+bool ChildSession::askSignatureStatus(const char* /*buffer*/, int /*length*/, const std::vector<std::string>& /*tokens*/)
+{
+    std::unique_lock<std::mutex> lock(_docManager.getDocumentMutex());
+
+    int nStatus = getLOKitDocument()->getSignatureState();
+
+    sendTextFrame("signaturestatus: " + nStatus);
+    return true;
+}
+
 bool ChildSession::selectGraphic(const char* /*buffer*/, int /*length*/, const std::vector<std::string>& tokens)
 {
     int type, x, y;
@@ -1586,6 +1609,9 @@ void ChildSession::loKitCallback(const int type, const std::string& payload)
         sendTextFrame("clipboardchanged: " + selection);
         break;
     }
+    case LOK_CALLBACK_SIGNATURE_STATUS:
+        sendTextFrame("signaturestatus: " + payload);
+        break;
     default:
         LOG_ERR("Unknown callback event (" << type << "): " << payload);
     }
diff --git a/kit/ChildSession.hpp b/kit/ChildSession.hpp
index b67a18980..292614ff1 100644
--- a/kit/ChildSession.hpp
+++ b/kit/ChildSession.hpp
@@ -230,6 +230,8 @@ private:
     bool setClientPart(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool setPage(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool sendWindowCommand(const char* buffer, int length, const std::vector<std::string>& tokens);
+    bool signDocumentContent(const char* buffer, int length, const std::vector<std::string>& tokens);
+    bool askSignatureStatus(const char* buffer, int length, const std::vector<std::string>& tokens);
 
     void rememberEventsForInactiveUser(const int type, const std::string& payload);
 
diff --git a/tools/KitClient.cpp b/tools/KitClient.cpp
index bc756b1d7..cdceb8a7b 100644
--- a/tools/KitClient.cpp
+++ b/tools/KitClient.cpp
@@ -82,6 +82,7 @@ extern "C"
             CASE(WINDOW);
             CASE(VALIDITY_LIST_BUTTON);
             CASE(CLIPBOARD_CHANGED);
+            CASE(SIGNATURE_STATUS);
 #undef CASE
         }
         std::cout << " payload: " << payload << std::endl;
diff --git a/wsd/ClientSession.cpp b/wsd/ClientSession.cpp
index 9101c7237..896163360 100644
--- a/wsd/ClientSession.cpp
+++ b/wsd/ClientSession.cpp
@@ -171,7 +171,9 @@ bool ClientSession::_handleInput(const char *buffer, int length)
              tokens[0] != "useractive" &&
              tokens[0] != "userinactive" &&
              tokens[0] != "paintwindow" &&
-             tokens[0] != "windowcommand")
+             tokens[0] != "windowcommand" &&
+             tokens[0] != "signdocument" &&
+             tokens[0] != "asksignaturestatus")
     {
         sendTextFrame("error: cmd=" + tokens[0] + " kind=unknown");
         return false;
diff --git a/wsd/protocol.txt b/wsd/protocol.txt
index 8bd29e638..bafebd452 100644
--- a/wsd/protocol.txt
+++ b/wsd/protocol.txt
@@ -223,6 +223,15 @@ versionrestore <action>
     - prerestore: The storage is about restore the document to an earlier
     revision.
 
+asksignaturestatus
+
+    Requests a signing status of the document.
+
+signdocument
+
+    Sign the current document with the input cetificate and private key.
+
+
 server -> client
 ================
 
@@ -474,6 +483,16 @@ versionrestore: <action>
      - prerestore_ack: The host can go ahead with restoring the document to an
        earlier revision.
 
+signaturestatus: <sign status>
+    Possible values:
+        0xffff - Unknown
+        0 - NOSIGNATURES
+        1 - OK
+        2 - BROKEN
+        3 - INVALID (signature is OK, but doc is modified now)
+        4 - NOTVALIDATED (signature is OK, but certificate could not be validated)
+        5 - PARTIAL_OK (signature and certificate are ok, but not all files are signed - old documents only)
+
 child -> parent
 ===============