From 94feba0d60fb7ffbd358d4b765da048217b03f34 Mon Sep 17 00:00:00 2001
From: merlokk <807634+merlokk@users.noreply.github.com>
Date: Mon, 19 Nov 2018 11:16:39 +0200
Subject: [PATCH] jsonloadstr

---
 client/emv/emvjson.c | 17 +++++++++++++++++
 client/emv/emvjson.h |  1 +
 2 files changed, 18 insertions(+)

diff --git a/client/emv/emvjson.c b/client/emv/emvjson.c
index e56ecbb7..116e16da 100644
--- a/client/emv/emvjson.c
+++ b/client/emv/emvjson.c
@@ -264,6 +264,23 @@ bool HexToBuffer(const char *errormsg, const char *hexvalue, uint8_t * buffer, s
 	return true;
 }
 
+int JsonLoadStr(json_t *root, char *path, char *value) {
+	if (!value)
+		return 1;
+
+	json_t *jelm = json_path_get((const json_t *)root, path);
+	if (!jelm || !json_is_string(jelm))
+		return 2;
+	
+	const char * strval = json_string_value(jelm);
+	if (!strval)
+		return 1;
+	
+	memcpy(value, strval, strlen(strval));
+	
+	return 0;
+}
+
 int JsonLoadBufAsHex(json_t *elm, char *path, uint8_t *data, size_t maxbufferlen, size_t *datalen) {
 	if (datalen)
 		*datalen = 0;
diff --git a/client/emv/emvjson.h b/client/emv/emvjson.h
index 9c6eda5e..996b611d 100644
--- a/client/emv/emvjson.h
+++ b/client/emv/emvjson.h
@@ -33,6 +33,7 @@ extern int JsonSaveTLVTreeElm(json_t *elm, char *path, struct tlvdb *tlvdbelm, b
 
 extern int JsonSaveTLVTree(json_t *root, json_t *elm, char *path, struct tlvdb *tlvdbelm);
 
+extern int JsonLoadStr(json_t *root, char *path, char *value);
 extern int JsonLoadBufAsHex(json_t *elm, char *path, uint8_t *data, size_t maxbufferlen, size_t *datalen);
 
 extern bool ParamLoadFromJson(struct tlvdb *tlv);