Function added that parses EAP method strings ([eap-]type[-vendor])

2 files changed, 86 insertions, 0 deletions

diff --git a/src/libstrongswan/eap/eap.c b/src/libstrongswan/eap/eap.c
index 05e8da2a7..2cc488388 100644
--- a/src/libstrongswan/eap/eap.c
+++ b/src/libstrongswan/eap/eap.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (C) 2012 Tobias Brunner
  * Copyright (C) 2006 Martin Willi
  * Hochschule fuer Technik Rapperswil
  *
@@ -13,8 +14,13 @@
  * for more details.
  */
 
+#include <stdlib.h>
+#include <errno.h>
+
 #include "eap.h"
 
+#include <debug.h>
+
 ENUM(eap_code_names, EAP_REQUEST, EAP_FAILURE,
 	"EAP_REQUEST",
 	"EAP_RESPONSE",
@@ -120,3 +126,56 @@ eap_type_t eap_type_from_string(char *name)
 	}
 	return 0;
 }
+
+/*
+ * See header
+ */
+eap_vendor_type_t *eap_vendor_type_from_string(char *str)
+{
+	enumerator_t *enumerator;
+	eap_vendor_type_t *result = NULL;
+	eap_type_t type = 0;
+	u_int32_t vendor = 0;
+	char *part, *end;
+
+	/* parse EAP method string of the form: [eap-]type[-vendor] */
+	enumerator = enumerator_create_token(str, "-", " ");
+	while (enumerator->enumerate(enumerator, &part))
+	{
+		if (!type)
+		{
+			if (streq(part, "eap"))
+			{	/* skip 'eap' at the beginning */
+				continue;
+			}
+			type = eap_type_from_string(part);
+			if (!type)
+			{
+				type = strtoul(part, &end, 0);
+				if (*end != '\0' || errno)
+				{
+					DBG1(DBG_LIB, "unknown or invalid EAP method: %s", part);
+					break;
+				}
+			}
+			continue;
+		}
+		vendor = strtoul(part, &end, 0);
+		if (*end != '\0' || errno)
+		{
+			DBG1(DBG_LIB, "invalid EAP vendor: %s", part);
+			type = 0;
+		}
+		break;
+	}
+	enumerator->destroy(enumerator);
+
+	if (type)
+	{
+		INIT(result,
+			.type = type,
+			.vendor = vendor,
+		);
+	}
+	return result;
+}
diff --git a/src/libstrongswan/eap/eap.h b/src/libstrongswan/eap/eap.h
index 936ae1190..d824783e5 100644
--- a/src/libstrongswan/eap/eap.h
+++ b/src/libstrongswan/eap/eap.h
@@ -1,6 +1,8 @@
 /*
+ * Copyright (C) 2012 Tobias Brunner
  * Copyright (C) 2010 Martin Willi
  * Copyright (C) 2010 revosec AG
+ * Hochschule fuer Technik Rapperswil
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -23,6 +25,7 @@
 
 typedef enum eap_code_t eap_code_t;
 typedef enum eap_type_t eap_type_t;
+typedef struct eap_vendor_type_t eap_vendor_type_t;
 
 #include <library.h>
 
@@ -83,6 +86,22 @@ extern enum_name_t *eap_type_names;
 extern enum_name_t *eap_type_short_names;
 
 /**
+ * Struct that stores EAP type and vendor ID
+ */
+struct eap_vendor_type_t {
+
+	/**
+	 * EAP type
+	 */
+	eap_type_t type;
+
+	/**
+	 * Vendor Id
+	 */
+	u_int32_t vendor;
+};
+
+/**
  * EAP packet format
  */
 typedef struct __attribute__((packed)) {
@@ -101,4 +120,12 @@ typedef struct __attribute__((packed)) {
  */
 eap_type_t eap_type_from_string(char *name);
 
+/**
+ * Parse a string of the form [eap-]type[-vendor].
+ *
+ * @param str		EAP method string
+ * @return			parsed type (gets allocated), NULL if unknown or failed
+ */
+eap_vendor_type_t *eap_vendor_type_from_string(char *str);
+
 #endif /** EAP_H_ @}*/