log_event_encoder: log_event_decoder: enhanced byte order handling fo…

…r timestamps (fluent#9196) This change ensures correct byte order conversions for timestamp fields within log event decoder and encoder. Added FLB_TO_NATIVE_UINT32 in flb_endian.h. This function checks the host machine's byte order and applies the necessary conversion for 32-bit unsigned integers. Signed-off-by: Mirko Lazarevic <[email protected]> Co-authored-by: Bernhard Schmid <[email protected]>
ctrlb-hq · Oct 1, 2024 · 2512ab2 · 2512ab2
1 parent 1cd7767
commit 2512ab2
Show file tree

Hide file tree

Showing 3 changed files with 16 additions and 4 deletions.
diff --git a/include/fluent-bit/flb_byteswap.h b/include/fluent-bit/flb_byteswap.h
@@ -21,6 +21,7 @@
 #define FLB_BYTESWAP_H
 
 #include <stdint.h>
+#include <fluent-bit/flb_endian.h>
 
 #if defined(FLB_HAVE_WIN32_BYTESWAP)
 #include <stdlib.h>
@@ -102,4 +103,15 @@ static inline uint64_t FLB_BSWAP_64(uint64_t value)
 
 #endif
 
+static inline uint32_t FLB_UINT32_TO_HOST_BYTE_ORDER(uint32_t value)
+{
+    #if FLB_BYTE_ORDER == FLB_LITTLE_ENDIAN
+        return FLB_BSWAP_32(value);
+    #else
+        return value;
+    #endif
+}
+
+#define FLB_UINT32_TO_NETWORK_BYTE_ORDER(value) FLB_UINT32_TO_HOST_BYTE_ORDER(value)
+
 #endif
diff --git a/src/flb_log_event_decoder.c b/src/flb_log_event_decoder.c
@@ -181,12 +181,12 @@ int flb_log_event_decoder_decode_timestamp(msgpack_object *input,
         }
 
         output->tm.tv_sec  = 
-            (int32_t) FLB_BSWAP_32(
+            (int32_t) FLB_UINT32_TO_HOST_BYTE_ORDER(
                         FLB_ALIGNED_DWORD_READ(
                             (unsigned char *) &input->via.ext.ptr[0]));
 
         output->tm.tv_nsec  = 
-            (int32_t) FLB_BSWAP_32(
+            (int32_t) FLB_UINT32_TO_HOST_BYTE_ORDER(
                         FLB_ALIGNED_DWORD_READ(
                             (unsigned char *) &input->via.ext.ptr[4]));
     }

diff --git a/src/flb_log_event_encoder_primitives.c b/src/flb_log_event_encoder_primitives.c
@@ -519,8 +519,8 @@ int flb_log_event_encoder_append_forward_v1_timestamp(
 {
     uint32_t value[2];
 
-    value[0] = FLB_BSWAP_32((uint32_t) timestamp->tm.tv_sec);
-    value[1] = FLB_BSWAP_32((uint32_t) timestamp->tm.tv_nsec);
+    value[0] = FLB_UINT32_TO_NETWORK_BYTE_ORDER((uint32_t) timestamp->tm.tv_sec);
+    value[1] = FLB_UINT32_TO_NETWORK_BYTE_ORDER((uint32_t) timestamp->tm.tv_nsec);
 
     return flb_log_event_encoder_append_ext(context, target_field,
                                             0, (char *) value, 8);