4 * hbytes raw2h BINARY => hex
5 * hbytes h2raw HEX => binary
7 * hbytes length VALUE => count
8 * hbytes prepend VAR [VALUE ...] = set VAR [concat VALUE ... $VAR]
9 * hbytes append VAR [VALUE ...] = set VAR [concat $VAR VALUE ...]
10 * hbytes concat VAR [VALUE ...] = set VAR [concat VALUE ...]
11 * hbytes unprepend VAR PREFIXLENGTH => prefix (removed from VAR)
12 * hbytes unappend VAR SUFFIXLENGTH => suffix (removed from VAR)
13 * hbytes chopto VAR NEWVARLENGTH => suffix (removed from VAR)
16 * hbytes range VALUE START SIZE => substring (or error)
17 * hbytes overwrite VAR START VALUE
18 * hbytes trimleft VAR removes any leading 0 octets
19 * hbytes repeat VALUE COUNT => COUNT copies of VALUE
21 * hbytes ushort2h LONG => LONG must be <2^16, returns as hex
22 * hbytes h2ushort HEX => |HEX| must be 2 bytes, returns as ulong
25 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
26 * -1 A is prefix of B but not equal (A<B)
28 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
29 * +2 A is lexically later than B and does not have B as a prefix
31 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
32 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
33 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
34 * hbytes blockcipher mac MSG ALG KEY MODE IV => final block
36 * hbytes hash ALG MESSAGE => hash
37 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
39 * ulong ul2int ULONG => INT can fail if >INT_MAX
40 * ulong int2ul INT => ULONG can fail if <0
41 * ulong mask A B => A & B
42 * ulong add A B => A + B (mod 2^32)
43 * ulong subtract A B => A - B (mod 2^32)
44 * ulong compare A B => 0/-1/1
45 * ulong shift l|r ULONG BITS fails if BITS >32
47 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
48 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
49 * goes from left (MSbit) to right (LSbit) where
50 * SIZE is size in bits
51 * TYPE [TYPE-ARGS...] is as below
55 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
56 * ulong VARNAME/VALUE VALUE if bitfields2ul)
69 #include <sys/socket.h>
72 #include <arpa/inet.h>
76 typedef unsigned char Byte;
80 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
82 /* Internal representation details: */
83 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
84 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
85 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
86 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
89 void *begin_complex, *end_0;
90 } HBytes_Value; /* overlays internalRep */
93 Byte *dstart; /* always allocated dynamically */
94 int prespace, len, avail;
96 * | SPARE | USED | SPARE |
97 * |<-prespace->|<-len->| |
101 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
103 /* Public interfaces: */
105 extern Tcl_ObjType hbytes_type;
107 int hbytes_len(const HBytes_Value *v);
108 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
109 int hbytes_issentinel(const HBytes_Value *v);
111 Byte *hbytes_prepend(HBytes_Value *upd, int el);
112 Byte *hbytes_append(HBytes_Value *upd, int el);
113 /* return value is where to put the data */
115 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
116 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
117 /* return value points to the removed data, which remains valid
118 * until next op on the HBytes_Value. If original value is
119 * shorter than rl or negative, returns 0 and does nothing. */
121 void hbytes_empty(HBytes_Value *returns);
122 void hbytes_sentinel(HBytes_Value *returns);
123 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
124 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
125 void hbytes_free(const HBytes_Value *frees);
126 /* _empty, _sentinel and _array do not free or read the old value;
127 * _free it first if needed. _free leaves it garbage, so you
128 * have to call _empty to reuse it. _arrayspace doesn't fill
129 * the array; you get a pointer and must fill it with data
132 /* The value made by hbytes_sentinel should not be passed to
133 * anything except HBYTES_IS..., and hbytes_free. */
135 /* from sockaddr.c */
141 extern Tcl_ObjType sockaddr_type;
143 void sockaddr_clear(SockAddr_Value*);
144 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
145 int sockaddr_len(const SockAddr_Value*);
146 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
147 void sockaddr_free(const SockAddr_Value*);
151 extern Tcl_ObjType dgramsockid_type;
152 typedef struct DgramSocket *DgramSockID;
156 int staticerr(Tcl_Interp *ip, const char *m);
157 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
158 void objfreeir(Tcl_Obj *o);
159 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
161 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
162 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
163 int l, const char *prefix);
165 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
166 /* const char*, int, const char*, int, ..., (const char*)0 */
167 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
168 void obj_updatestr_string(Tcl_Obj *o, const char *str);
178 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
181 /* only do_... functions declared in tables.h */
185 Tcl_ObjType ulong_type;
189 extern Tcl_ObjType enum_nearlytype;
190 extern Tcl_ObjType enum1_nearlytype;
192 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
193 const void *firstentry, size_t entrysize,
195 #define enum_lookup_cached(ip,o,table,what) \
196 (enum_lookup_cached_func((ip),(o), \
197 &(table)[0],sizeof((table)[0]), \
199 /* table should be a pointer to an array of structs of size
200 * entrysize, the first member of which should be a const char*.
201 * The table should finish with a null const char *.
202 * On error, 0 is returned and the ip->result will have been
203 * set to the error message.
206 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
207 const char *opts, const char *what);
212 void memxor(Byte *dest, const Byte *src, int l);
216 int pad, use_algname;
219 extern Tcl_ObjType blockcipherkey_type;
221 /* from algtables.c */
225 int hashsize, blocksize, statesize;
226 void (*init)(void *state);
227 void (*update)(void *state, const void *data, int len);
228 void (*final)(void *state, void *digest);
229 void (*oneshot)(void *digest, const void *data, int len);
232 extern const HashAlgInfo hashalginfos[];
235 void (*make_schedule)(void *schedule, const void *key, int keylen);
236 void (*crypt)(const void *schedule, const void *in, void *out);
237 /* in and out may be the same, but if they aren't they may not overlap */
238 /* in and out for crypt will have been through block_byteswap */
239 } BlockCipherPerDirectionInfo;
243 int blocksize, schedule_size, key_min, key_max;
244 void (*byteswap)(void *block);
245 BlockCipherPerDirectionInfo encrypt, decrypt;
246 } BlockCipherAlgInfo;
248 extern const BlockCipherAlgInfo blockcipheralginfos[];
254 int iv_blocks, buf_blocks, mac_blocks;
256 /* Each function is allowed to use up to buf_blocks * blocksize
257 * bytes of space in buf. data is blocks * blocksize bytes
258 * long. data should be modified in place by encrypt and decrypt;
259 * modes may not change the size of data. iv is always provided and
260 * is always of length iv_blocks * blocksize; encrypt and
261 * decrypt may modify the iv value (in which case the Tcl caller
262 * will get the modified IV) but this is not recommended. mac
263 * should leave the mac, which must be mac_blocks * blocksize
264 * bytes, in buf. (Therefore mac_blocks must be at least
267 const char *(*encrypt)(Byte *data, int nblocks,
268 const Byte *iv, Byte *buf,
269 const BlockCipherAlgInfo *alg, int encr,
271 const char *(*decrypt)(Byte *data, int nblocks,
272 const Byte *iv, Byte *buf,
273 const BlockCipherAlgInfo *alg, int encr,
275 const char *(*mac)(const Byte *data, int nblocks,
276 const Byte *iv, Byte *buf,
277 const BlockCipherAlgInfo *alg,
279 } BlockCipherModeInfo;
281 extern const BlockCipherModeInfo blockciphermodeinfos[];
285 int setnonblock(int fd, int isnonblock);
289 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
290 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
292 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
293 #define TFREE(f) (Tcl_Free((void*)(f)))