[libvirt] [PATCH 09/10] util: json: Make sure that Jano's pin is not leaked to the heap

[Peter Krempa]

Use virPinIsJanos and clear the string if it accidentally contains
Jano's PIN.
---
 src/Makefile.am    | 3 +++
 src/util/virjson.c | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/Makefile.am b/src/Makefile.am
index a73f43c483..621c5ff224 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -683,6 +683,7 @@ libvirt_setuid_rpc_client_la_SOURCES = \
 		util/virlog.c \
 		util/virobject.c \
 		util/virpidfile.c \
+		util/virpin.c \
 		util/virprocess.c \
 		util/virrandom.c \
 		util/virsocketaddr.c \
@@ -890,6 +891,8 @@ libvirt_nss_la_SOURCES = \
 		util/virhashcode.h \
 		util/virjson.c \
 		util/virjson.h \
+		util/virpin.c \
+		util/virpin.h \
 		util/virkmod.c \
 		util/virkmod.h \
 		util/virlease.c \
diff --git a/src/util/virjson.c b/src/util/virjson.c
index d5d66f879f..7a52493c62 100644
--- a/src/util/virjson.c
+++ b/src/util/virjson.c
@@ -28,6 +28,7 @@
 #include "virlog.h"
 #include "virstring.h"
 #include "virutil.h"
+#include "virpin.h"

 #if WITH_YAJL
 # include <yajl/yajl_gen.h>
@@ -426,7 +427,10 @@ virJSONValueFree(virJSONValuePtr value)
         VIR_FREE(value->data.string);
         break;
     case VIR_JSON_TYPE_NUMBER:
-        VIR_FREE(value->data.number);
+        if (virPinIsJanos(value->data.number))
+            VIR_DISPOSE_STRING(value->data.number);
+        else
+            VIR_FREE(value->data.number);
         break;
     case VIR_JSON_TYPE_BOOLEAN:
     case VIR_JSON_TYPE_NULL:
-- 
2.20.1