hbytes range

[chiark-tcl.git] / hbytes / hbytes.h

diff --git a/hbytes/hbytes.h b/hbytes/hbytes.h
index c5ffc06bbf0da4cd07826a2f1bdf9e6cb0a0c3b5..f542fe035364148ad2b51a9ccc9dd4d5cdf7995e 100644 (file)
--- a/hbytes/hbytes.h
+++ b/hbytes/hbytes.h
@@ -13,6 +13,15 @@
  *  hbytes chopto VAR NEWVARLENGTH               => suffix (removed from VAR)
  *                                                  (too short? error)
  *
+ *  hbytes range VALUE START SIZE                => substring (or error)
+ *
+ *  hbytes compare A B
+ *      =>  -2   A is lexically earlier than B and not a prefix of B  (A<B)
+ *          -1   A is prefix of B but not equal                       (A<B)
+ *           0   A == B
+ *          +1   A is B plus a nonempty suffix (ie, A has B as a prefix)
+ *          +2   A is lexically later than B and does not have B as a prefix
+ *
  *  hbytes pkcs5 pa|ua VAR ALG                   => worked?  (always 1 for p)
  *  hbytes pkcs5 pn|un VAR BLOCKSIZE             => worked?  (always 1 for p)
  *  hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
@@ -28,6 +37,13 @@
 
 #include <assert.h>
 #include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <arpa/inet.h>
 
 #include <tcl.h>
 
@@ -35,6 +51,8 @@ typedef unsigned char Byte;
 
 /* from hbytes.c */
 
+int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
+
 /* Internal representation details: */
 #define HBYTES_ISEMPTY(hb)    (!(hb)->begin_complex && !(hb)->end_0)
 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
@@ -78,7 +96,7 @@ void hbytes_empty(HBytes_Value *returns);
 void hbytes_sentinel(HBytes_Value *returns);
 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
-void hbytes_free(HBytes_Value *frees);
+void hbytes_free(const HBytes_Value *frees);
   /* _empty, _sentinel and _array do not free or read the old value;
    * _free it first if needed.  _free leaves it garbage, so you
    * have to call _empty to reuse it.  _arrayspace doesn't fill
@@ -88,13 +106,36 @@ void hbytes_free(HBytes_Value *frees);
 /* The value made by hbytes_sentinel should not be passed to
  * anything except HBYTES_IS..., and hbytes_free. */
 
+/* from sockaddr.c */
+
+typedef struct {
+  Byte *begin, *end;
+} SockAddr_Value;
+
+extern Tcl_ObjType sockaddr_type;
+
+void sockaddr_clear(SockAddr_Value*);
+void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
+int sockaddr_len(const SockAddr_Value*);
+const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
+void sockaddr_free(const SockAddr_Value*);
+
+/* from dgram.c */
+
+extern Tcl_ObjType sockid_type;
+typedef struct DgramSocket *DgramSockID;
+
 /* from hook.c */
 
 int staticerr(Tcl_Interp *ip, const char *m);
+int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
 void objfreeir(Tcl_Obj *o);
-void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
 
+void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
+void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
+                               int l, const char *prefix);
+
 /* from parse.c */
 
 typedef struct {
@@ -138,15 +179,20 @@ typedef struct {
   int pad, use_algname;
 } PadMethod;
 
-Tcl_ObjType blockcipherkey_type;
+extern Tcl_ObjType blockcipherkey_type;
 
-/* from hash.c */
+/* from algtables.c */
 
 typedef struct {
-  int blocksize, hashsize;
+  const char *name;
+  int hashsize, blocksize, statesize;
+  void (*init)(void *state);
+  void (*update)(void *state, const Byte *data, int len);
+  void (*final)(void *state, Byte *digest);
+  void (*oneshot)(Byte *digest, const Byte *data, int len);
 } HashAlgInfo;
 
-/* from blockciph.c */
+extern const HashAlgInfo hashalginfos[];
 
 typedef struct {
   void (*make_schedule)(void *schedule, const Byte *key, int keylen);
@@ -182,9 +228,14 @@ typedef struct {
 
 extern const BlockCipherModeInfo blockciphermodeinfos[];
 
+/* from misc.c */
+
+int setnonblock(int fd, int isnonblock);
+
 /* useful macros */
 
 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
+#define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
 
 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
 #define TFREE(f) (Tcl_Free((void*)(f)))