2 files changed, 39 insertions, 2 deletions
diff --git a/src/libstrongswan/utils/lexparser.c b/src/libstrongswan/utils/lexparser.c
index 9d3f06593..7cc89fc90 100644
--- a/src/libstrongswan/utils/lexparser.c
+++ b/src/libstrongswan/utils/lexparser.c
@@ -17,8 +17,12 @@
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * for more details.
+ *
+ * RCSID $Id: lexparser.c 3353 2007-11-19 12:27:08Z martin $
  */
 
+/* memrchr is a GNU extension */
+#define _GNU_SOURCE
 #include <string.h>
 
 #include "lexparser.h"
@@ -45,7 +49,7 @@ bool match(const char *pattern, const chunk_t *ch)
 }
 
 /**
- * extracts a token ending with a given termination symbol
+ * extracts a token ending with the first occurrence of a given termination symbol
  */
 bool extract_token(chunk_t *token, const char termination, chunk_t *src)
 {
@@ -71,6 +75,32 @@ bool extract_token(chunk_t *token, const char termination, chunk_t *src)
 }
 
 /**
+ * extracts a token ending with the last occurrence of a given termination symbol
+ */
+bool extract_last_token(chunk_t *token, const char termination, chunk_t *src)
+{
+	u_char *eot = memrchr(src->ptr, termination, src->len);
+	
+	/* initialize empty token */
+	*token = chunk_empty;
+	
+	if (eot == NULL) /* termination symbol not found */
+	{
+		return FALSE;
+	}
+	
+	/* extract token */
+	token->ptr = src->ptr;
+	token->len = (u_int)(eot - src->ptr);
+	
+	/* advance src pointer after termination symbol */
+	src->ptr = eot + 1;
+	src->len -= (token->len + 1);
+	
+	return TRUE;
+}
+
+/**
  *  fetches a new line terminated by \n or \r\n
  */
 bool fetchline(chunk_t *src, chunk_t *line)
diff --git a/src/libstrongswan/utils/lexparser.h b/src/libstrongswan/utils/lexparser.h
index e3c2c4c70..775898139 100644
--- a/src/libstrongswan/utils/lexparser.h
+++ b/src/libstrongswan/utils/lexparser.h
@@ -17,6 +17,8 @@
  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * for more details.
+ *
+ * RCSID $Id: lexparser.h 3346 2007-11-16 20:23:29Z andreas $
  */
 
 #include <library.h>
@@ -32,11 +34,16 @@ bool eat_whitespace(chunk_t *src);
 bool match(const char *pattern, const chunk_t *ch);
 
 /**
- * @brief Extracts a token ending with a given termination symbol
+ * @brief Extracts a token ending with the first occurence a given termination symbol
  */
 bool extract_token(chunk_t *token, const char termination, chunk_t *src);
 
 /**
+ * @brief Extracts a token ending with the last occurence a given termination symbol
+ */
+bool extract_last_token(chunk_t *token, const char termination, chunk_t *src);
+
+/**
  *  @brief Fetches a new text line terminated by \n or \r\n
  */
 bool fetchline(chunk_t *src, chunk_t *line);