jansson: use key as field name for jansson_get_field()

- do no try to evaluate it as json path

src/modules/jansson/jansson_funcs.c

@@ -34,7 +34,7 @@
 #include "jansson_utils.h"
 
 int janssonmod_get_helper(
-		sip_msg_t *msg, str *path_s, str *src_s, pv_spec_t *dst_pv)
+		sip_msg_t *msg, str *path_s, int pmode, str *src_s, pv_spec_t *dst_pv)
 {
 	char c;
 	pv_value_t dst_val;
@@ -52,7 +52,7 @@ int janssonmod_get_helper(
 
 	char *path = path_s->s;
 
-	json_t *v = json_path_get(json, path, 0);
+	json_t *v = json_path_get(json, path, pmode);
 	if(!v) {
 		goto fail;
 	}
@@ -91,7 +91,26 @@ int janssonmod_get(struct sip_msg *msg, char *path_in, char *src_in, char *dst)
 		return -1;
 	}
 
-	return janssonmod_get_helper(msg, &path_s, &src_s, (pv_spec_t *)dst);
+	return janssonmod_get_helper(msg, &path_s, 0, &src_s, (pv_spec_t *)dst);
+}
+
+int janssonmod_get_field(
+		struct sip_msg *msg, char *path_in, char *src_in, char *dst)
+{
+	str src_s;
+	str path_s;
+
+	if(fixup_get_svalue(msg, (gparam_p)src_in, &src_s) != 0) {
+		ERR("cannot get json string value\n");
+		return -1;
+	}
+
+	if(fixup_get_svalue(msg, (gparam_p)path_in, &path_s) != 0) {
+		ERR("cannot get path string value\n");
+		return -1;
+	}
+
+	return janssonmod_get_helper(msg, &path_s, 1, &src_s, (pv_spec_t *)dst);
 }
 
 int janssonmod_pv_get(
@@ -111,7 +130,7 @@ int janssonmod_pv_get(
 		return -1;
 	}
 
-	ret = janssonmod_get_helper(msg, &path_s, &val.rs, (pv_spec_t *)dst);
+	ret = janssonmod_get_helper(msg, &path_s, 0, &val.rs, (pv_spec_t *)dst);
 
 	pv_value_destroy(&val);
 

src/modules/jansson/jansson_funcs.h

@@ -27,6 +27,8 @@
 
 int janssonmod_get(
 		struct sip_msg *msg, char *path_in, char *json_in, char *result);
+int janssonmod_get_field(
+		struct sip_msg *msg, char *path_in, char *src_in, char *dst);
 int janssonmod_pv_get(
 		struct sip_msg *msg, char *path_in, char *json_in, char *result);
 int janssonmod_set(unsigned int append, struct sip_msg *msg, char *type_in,
@@ -34,7 +36,7 @@ int janssonmod_set(unsigned int append, struct sip_msg *msg, char *type_in,
 int janssonmod_array_size(
 		struct sip_msg *msg, char *json_in, char *path_in, char *dst);
 int janssonmod_get_helper(
-		sip_msg_t *msg, str *path_s, str *src_s, pv_spec_t *dst_pv);
+		sip_msg_t *msg, str *path_s, int pmode, str *src_s, pv_spec_t *dst_pv);
 int jansson_xdecode(struct sip_msg *msg, char *src_in, char *xavp_in);
 int jansson_xencode(struct sip_msg *msg, char *xavp, char *dst);
 

src/modules/jansson/jansson_mod.c

@@ -55,11 +55,6 @@ int janssonmod_set_append(struct sip_msg *msg, char *type_in, char *path_in,
 {
 	return janssonmod_set(1, msg, type_in, path_in, value_in, result);
 }
-int janssonmod_get_field(
-		struct sip_msg *msg, char *jansson_in, char *path_in, char *result)
-{
-	return janssonmod_get(msg, path_in, jansson_in, result);
-}
 
 /* clang-format off */
 /* Exported functions */
@@ -246,7 +241,7 @@ static int ki_jansson_get(sip_msg_t *msg, str *spath, str *sdoc, str *spv)
 		return -1;
 	}
 
-	return janssonmod_get_helper(msg, spath, sdoc, pvs);
+	return janssonmod_get_helper(msg, spath, 0, sdoc, pvs);
 }
 
 /**