xnu-1228.9.59.tar.gz

[apple/xnu.git] / bsd / netinet / dhcp_options.h

diff --git a/bsd/netinet/dhcp_options.h b/bsd/netinet/dhcp_options.h
index 23cf365d979ee629d57102a00dacb2ff922d5b7f..ca6197a92676804694422fc0a155b2d1791bda64 100644 (file)
--- a/bsd/netinet/dhcp_options.h
+++ b/bsd/netinet/dhcp_options.h
@@ -3,7 +3,7 @@
 #define _NETINET_DHCP_OPTIONS_H
 #include <sys/appleapiopts.h>
 /*
- * Copyright (c) 1999-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2007 Apple Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -65,7 +65,7 @@
 #define RFC_OPTIONS_MAGIC              { 99, 130, 83, 99 }
 #define RFC_MAGIC_SIZE                 4 /* bytes */
 
-typedef enum {
+enum {
     /* rfc 1497 vendor extensions: 0..18, 255 */
     dhcptag_pad_e                              = 0,
     dhcptag_end_e                              = 255,
@@ -163,7 +163,8 @@ typedef enum {
 
     /* ad-hoc network disable option */
     dhcptag_auto_configure_e                   = 116,
-} dhcptag_t;
+};
+typedef uint8_t dhcptag_t; 
 
 /*
  * Module: dhcpol (dhcp options list)
@@ -173,9 +174,9 @@ typedef enum {
  */
 
 typedef struct {
-    void * *   array;  /* malloc'd array of pointers */
-    int                size;   /* number of elements in array */
-    int                count;  /* number of occupied elements */
+    const void * *     array;  /* malloc'd array of pointers */
+    int                        size;   /* number of elements in array */
+    int                        count;  /* number of occupied elements */
 } ptrlist_t;
 
 typedef ptrlist_t dhcpol_t;
@@ -185,20 +186,93 @@ typedef ptrlist_t dhcpol_t;
 void                   dhcpol_init(dhcpol_t * list);
 void                   dhcpol_free(dhcpol_t * list);
 int                    dhcpol_count(dhcpol_t * list);
-boolean_t              dhcpol_add(dhcpol_t * list, void * element);
-void *                 dhcpol_element(dhcpol_t * list, int i);
+boolean_t              dhcpol_add(dhcpol_t * list, const void * element);
+const void *           dhcpol_element(dhcpol_t * list, int i);
 boolean_t              dhcpol_concat(dhcpol_t * list, dhcpol_t * extra);
-boolean_t              dhcpol_parse_buffer(dhcpol_t * list, void * buffer, 
-                                           int length, unsigned char * err);
-void *                 dhcpol_find(dhcpol_t * list, int tag, int * len_p, 
+boolean_t              dhcpol_parse_buffer(dhcpol_t * list,
+                                           const void * buffer, 
+                                           int length);
+const void *           dhcpol_find(dhcpol_t * list, int tag, int * len_p, 
                                    int * start);
+#if 0
 void *                 dhcpol_get(dhcpol_t * list, int tag, int * len_p);
+#endif 0
 boolean_t              dhcpol_parse_packet(dhcpol_t * options, 
-                                           struct dhcp * pkt, int len,
-                                           unsigned char * err);
-boolean_t              dhcpol_parse_vendor(dhcpol_t * vendor, 
-                                           dhcpol_t * options,
-                                           unsigned char * err);
+                                           const struct dhcp * pkt, int len);
 void                   dhcpol_print(dhcpol_t * list);
+/*
+ * Module: dhcpoa (dhcp options area)
+ *
+ * Purpose:
+ *   Types and functions to create new dhcp option areas.
+ */
+
+/*
+ * Struct: dhcpoa_s
+ * Purpose:
+ *   To record information about a dhcp option data area.
+ */
+struct dhcpoa_s {
+    uint8_t *  oa_buffer;      /* data area to hold options */
+    int                oa_size;        /* size of buffer */
+    int                oa_offset;      /* offset of next option to write */
+    int                oa_end_tag;     /* to mark when options are terminated */
+    int                oa_option_count;/* number of options present */
+    int                oa_reserve;     /* space to reserve, either 0 or 1 */
+};
+
+/*
+ * Type: dhcpoa_t
+ *
+ * Purpose:
+ *   To record information about a dhcp option data area.
+ */
+typedef struct dhcpoa_s dhcpoa_t;
+
+/* 
+ * Type:dhcpoa_ret_t
+ *
+ * Purpose:
+ *  outine return codes 
+ */
+typedef enum {
+    dhcpoa_success_e = 0,
+    dhcpoa_failed_e,
+    dhcpoa_full_e,
+} dhcpoa_ret_t;
+
+void
+dhcpoa_init(dhcpoa_t * opt, void * buffer, int size);
+
+void
+dhcpoa_init_no_end(dhcpoa_t * opt, void * buffer, int size);
+
+dhcpoa_ret_t
+dhcpoa_add(dhcpoa_t * oa_p, dhcptag_t tag, int len, const void * data);
+
+dhcpoa_ret_t
+dhcpoa_add_dhcpmsg(dhcpoa_t * oa_p, dhcp_msgtype_t msgtype);
+
+#if 0
+dhcpoa_ret_t
+dhcpoa_vendor_add(dhcpoa_t * oa_p, dhcpoa_t * vendor_oa_p,
+                 dhcptag_t tag, int len, void * option);
+#endif 0
+
+int
+dhcpoa_used(dhcpoa_t * oa_p);
+
+int
+dhcpoa_count(dhcpoa_t * oa_p);
+
+void *
+dhcpoa_buffer(dhcpoa_t * oa_p);
+
+int
+dhcpoa_freespace(dhcpoa_t * oa_p);
+
+int
+dhcpoa_size(dhcpoa_t * oa_p);
+
 #endif KERNEL_PRIVATE
 #endif /* _NETINET_DHCP_OPTIONS_H */