From 81736d7d243036220621a438e4d92528798fdc09 Mon Sep 17 00:00:00 2001
From: Tobias Brunner <tobias@strongswan.org>
Date: Wed, 3 Dec 2008 09:45:58 +0000
Subject: added memstr and extract_token_str helper functions

---
 src/libstrongswan/utils/lexparser.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'src/libstrongswan/utils/lexparser.c')

diff --git a/src/libstrongswan/utils/lexparser.c b/src/libstrongswan/utils/lexparser.c
index 9019c2602..34eb340a5 100644
--- a/src/libstrongswan/utils/lexparser.c
+++ b/src/libstrongswan/utils/lexparser.c
@@ -75,6 +75,33 @@ bool extract_token(chunk_t *token, const char termination, chunk_t *src)
 	return TRUE;
 }
 
+/**
+ * extracts a token ending with the first occurrence of a given null-terminated string
+ */
+bool extract_token_str(chunk_t *token, const char *termination, chunk_t *src)
+{
+	u_char *eot = memstr(src->ptr, termination, src->len);
+	size_t l = strlen(termination);
+	
+	/* initialize empty token */
+	*token = chunk_empty;
+	
+	if (eot == NULL) /* termination string not found */
+	{
+		return FALSE;
+	}
+	
+	/* extract token */
+	token->ptr = src->ptr;
+	token->len = (u_int)(eot - src->ptr);
+	
+	/* advance src pointer after termination string */
+	src->ptr = eot + l;
+	src->len -= (token->len + l);
+	
+	return TRUE;
+}
+
 /**
  * extracts a token ending with the last occurrence of a given termination symbol
  */
-- 
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