XML: Add time formatting function for ISO 8601 format

 * xml/private.h:
 * xml/tools.c:
   add util function to format time_t values in the ISO 8601 format.

2 files changed, 19 insertions, 7 deletions

diff --git a/lasso/xml/private.h b/lasso/xml/private.h
index 9cabcb14..82460eb3 100644
--- a/lasso/xml/private.h
+++ b/lasso/xml/private.h
@@ -113,6 +113,7 @@ typedef enum {
 void  lasso_build_random_sequence(char *buffer, unsigned int size);
 char* lasso_build_unique_id(unsigned int size);
 char* lasso_get_current_time(void);
+char* lasso_time_to_iso_8601_gmt(time_t now);
 LassoPemFileType lasso_get_pem_file_type(const char *file);
 
 xmlSecKeyPtr lasso_get_public_key_from_pem_file(const char *file);
diff --git a/lasso/xml/tools.c b/lasso/xml/tools.c
index 1796daa7..d31e0a7b 100644
--- a/lasso/xml/tools.c
+++ b/lasso/xml/tools.c
@@ -120,26 +120,37 @@ lasso_build_unique_id(unsigned int size)
 }
 
 /**
- * lasso_get_current_time:
+ * lasso_time_to_iso_8601_gmt:
+ * @now: a #time_t value
  *
- * Returns the current time, format is "yyyy-mm-ddThh:mm:ssZ".
+ * Format the given time as an ISO 8601 date-time value in UTC.
  *
- * Return value: a string
- **/
+ * Return value: an ISO 9601 formatted string.
+ */
 char*
-lasso_get_current_time()
+lasso_time_to_iso_8601_gmt(time_t now)
 {
-	time_t now;
 	struct tm *tm;
 	char *ret;
 
 	ret = g_malloc(21);
-	now = time(NULL);
 	tm = gmtime(&now);
 	strftime(ret, 21, "%Y-%m-%dT%H:%M:%SZ", tm);
 
 	return ret;
 }
+/**
+ * lasso_get_current_time:
+ *
+ * Returns the current time, format is "yyyy-mm-ddThh:mm:ssZ".
+ *
+ * Return value: a string
+ **/
+char*
+lasso_get_current_time()
+{
+	return lasso_time_to_iso_8601_gmt(time(NULL));
+}
 
 /**
  * lasso_get_pem_file_type: