added a small serialization function for further use in htable dmq

modules_k/htable/ht_serialize.c

@@ -0,0 +1,45 @@
+#include "ht_var.h"
+#include "../../str.h"
+#include "ht_serialize.h"
+#include "../../basex.h"
+
+int serialize_ht_pair(pv_value_t* val, str* htname, str* s, int len) {
+	str encoded_val = {0, 0};
+	str encoded_htname = {0, 0};
+	if (!s) {
+		LM_ERR("no destination string given\n");
+		goto error;
+	}
+	if(!htname || !htname->s || !htname->len) {
+		LM_ERR("no hashtable name given\n");
+		goto error;
+	}
+	if(val->rs.len) {
+		encoded_val.len = base64_enc_len(val->rs.len);
+		encoded_val.s = pkg_malloc(encoded_val.len);
+		if(base64_enc((unsigned char*)val->rs.s, val->rs.len, (unsigned char*)encoded_val.s, encoded_val.len) < 0) {
+			LM_ERR("cannot base64 value\n");
+			goto error;
+		}
+	}
+	encoded_htname.len = base64_enc_len(htname->len);
+	encoded_htname.s = pkg_malloc(encoded_htname.len);
+	if(base64_enc((unsigned char*)htname->s, htname->len, (unsigned char*)encoded_htname.s, encoded_htname.len) < 0) {
+		LM_ERR("cannot base64 value\n");
+		goto error;
+	}
+	s->len = snprintf(s->s, len, "%d %d %.*s %.*s", val->flags, val->ri, STR_FMT(&encoded_htname), STR_FMT(&encoded_val));
+	if(s->len < 0) {
+		LM_ERR("cannot serialize data - probably an small buffer\n");
+		goto error;
+	}
+	return 0;
+error:
+	if(encoded_val.s) {
+		pkg_free(encoded_val.s);
+	}
+	if(encoded_htname.s) {
+		pkg_free(encoded_htname.s);
+	}
+	return -1;
+}