proto: Add agent features messageagentfeatures

The message is sent by server to the client to indicate
which agent features are enabled or disabled by using flags.

If a flag is set, then the corresponding feature is enabled.

The message currently supports info about copy & paste and file transfer.

Related:
https://bugzilla.redhat.com/show_bug.cgi?id=1373725

3 files changed, 14 insertions, 1 deletions

diff --git a/common/messages.h b/common/messages.h
index c787166..3f4abc1 100644
--- a/common/messages.h
+++ b/common/messages.h
@@ -99,6 +99,10 @@ typedef struct SpiceMsgMainMigrateBeginSeamless {
     uint32_t src_mig_version;
 } SpiceMsgMainMigrateBeginSeamless;
 
+typedef struct SpiceMsgMainAgentFeatures {
+    uint32_t flags;
+} SpiceMsgMainAgentFeatures;
+
 typedef struct SpiceMsgcMainMigrateDstDoSeamless {
     uint32_t src_version;
 } SpiceMsgcMainMigrateDstDoSeamless;
diff --git a/configure.ac b/configure.ac
index c3ad5a4..c0e49b7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -28,7 +28,7 @@ AM_PROG_CC_C_O
 SPICE_CHECK_SYSDEPS
 
 # Checks for libraries
-PKG_CHECK_MODULES([PROTOCOL], [spice-protocol >= 0.12.12])
+PKG_CHECK_MODULES([PROTOCOL], [spice-protocol >= 0.12.13])
 
 SPICE_CHECK_PYTHON_MODULES()
 
diff --git a/spice.proto b/spice.proto
index 3742ef1..8497997 100644
--- a/spice.proto
+++ b/spice.proto
@@ -226,6 +226,11 @@ struct DstInfo {
 	uint8 *cert_subject_data[cert_subject_size] @zero_terminated @marshall;
 } @ctype(SpiceMigrationDstInfo);
 
+flags32 agent_features_flags {
+    COPY_PASTE,
+    FILE_TRANSFER
+} @prefix(SPICE_AGENT_FEATURE_);
+
 channel MainChannel : BaseChannel {
  server:
      message {
@@ -303,6 +308,10 @@ channel MainChannel : BaseChannel {
     Empty migrate_dst_seamless_ack;
     Empty migrate_dst_seamless_nack;
 
+    message {
+        agent_features_flags flags;
+    } agent_features;
+
  client:
     message {
 	uint64 cache_size;