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 clockincrement VAR INTEGER adds INTEGER to VAR mod 256^|VAR|
22 * INTEGER must be -255 .. 255
23 * => carry (-255 to 255,
24 * and -1,0,1 if VAR not empty)
26 * hbytes h2ulong HEX => ulong (HEX len must be 4)
27 * hbytes ulong2h UL => hex
29 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
30 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
31 * goes from left (MSbit) to right (LSbit) where
32 * SIZE is size in bits
33 * TYPE [TYPE-ARGS...] is as below
37 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
38 * ulong VARNAME/VALUE VALUE if bitfields2ul)
40 * ulong ul2int ULONG => INT can fail if >INT_MAX
41 * ulong int2ul INT => ULONG can fail if <0
43 * hbytes shift l|r ULONG BITS fails if BITS >32
44 * hbytes mask A B => A & B
47 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
48 * -1 A is prefix of B but not equal (A<B)
50 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
51 * +2 A is lexically later than B and does not have B as a prefix
53 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
54 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
55 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
56 * hbytes blockcipher mac MSG ALG KEY MODE IV => final block
58 * hbytes hash ALG MESSAGE => hash
59 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
72 #include <sys/socket.h>
75 #include <arpa/inet.h>
79 typedef unsigned char Byte;
83 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
85 /* Internal representation details: */
86 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
87 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
88 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
89 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
92 void *begin_complex, *end_0;
93 } HBytes_Value; /* overlays internalRep */
96 Byte *dstart; /* always allocated dynamically */
97 int prespace, len, avail;
99 * | SPARE | USED | SPARE |
100 * |<-prespace->|<-len->| |
101 * | |<----avail---->|
104 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
106 /* Public interfaces: */
108 extern Tcl_ObjType hbytes_type;
110 int hbytes_len(const HBytes_Value *v);
111 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
112 int hbytes_issentinel(const HBytes_Value *v);
114 Byte *hbytes_prepend(HBytes_Value *upd, int el);
115 Byte *hbytes_append(HBytes_Value *upd, int el);
116 /* return value is where to put the data */
118 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
119 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
120 /* return value points to the removed data, which remains valid
121 * until next op on the HBytes_Value. If original value is
122 * shorter than rl or negative, returns 0 and does nothing. */
124 void hbytes_empty(HBytes_Value *returns);
125 void hbytes_sentinel(HBytes_Value *returns);
126 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
127 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
128 void hbytes_free(const HBytes_Value *frees);
129 /* _empty, _sentinel and _array do not free or read the old value;
130 * _free it first if needed. _free leaves it garbage, so you
131 * have to call _empty to reuse it. _arrayspace doesn't fill
132 * the array; you get a pointer and must fill it with data
135 /* The value made by hbytes_sentinel should not be passed to
136 * anything except HBYTES_IS..., and hbytes_free. */
138 /* from sockaddr.c */
144 extern Tcl_ObjType sockaddr_type;
146 void sockaddr_clear(SockAddr_Value*);
147 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
148 int sockaddr_len(const SockAddr_Value*);
149 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
150 void sockaddr_free(const SockAddr_Value*);
154 extern Tcl_ObjType dgramsockid_type;
155 typedef struct DgramSocket *DgramSockID;
159 int staticerr(Tcl_Interp *ip, const char *m);
160 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
161 void objfreeir(Tcl_Obj *o);
162 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
164 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
165 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
166 int l, const char *prefix);
168 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
169 /* const char*, int, const char*, int, ..., (const char*)0 */
170 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
171 void obj_updatestr_string(Tcl_Obj *o, const char *str);
181 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
184 /* only do_... functions declared in tables.h */
188 Tcl_ObjType ulong_type;
192 extern Tcl_ObjType enum_nearlytype;
193 extern Tcl_ObjType enum1_nearlytype;
195 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
196 const void *firstentry, size_t entrysize,
198 #define enum_lookup_cached(ip,o,table,what) \
199 (enum_lookup_cached_func((ip),(o), \
200 &(table)[0],sizeof((table)[0]), \
202 /* table should be a pointer to an array of structs of size
203 * entrysize, the first member of which should be a const char*.
204 * The table should finish with a null const char *.
205 * On error, 0 is returned and the ip->result will have been
206 * set to the error message.
209 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
210 const char *opts, const char *what);
215 void memxor(Byte *dest, const Byte *src, int l);
219 int pad, use_algname;
222 extern Tcl_ObjType blockcipherkey_type;
224 /* from algtables.c */
228 int hashsize, blocksize, statesize;
229 void (*init)(void *state);
230 void (*update)(void *state, const void *data, int len);
231 void (*final)(void *state, void *digest);
232 void (*oneshot)(void *digest, const void *data, int len);
235 extern const HashAlgInfo hashalginfos[];
238 void (*make_schedule)(void *schedule, const void *key, int keylen);
239 void (*crypt)(const void *schedule, const void *in, void *out);
240 /* in and out may be the same, but if they aren't they may not overlap */
241 /* in and out for crypt will have been through block_byteswap */
242 } BlockCipherPerDirectionInfo;
246 int blocksize, schedule_size, key_min, key_max;
247 void (*byteswap)(void *block);
248 BlockCipherPerDirectionInfo encrypt, decrypt;
249 } BlockCipherAlgInfo;
251 extern const BlockCipherAlgInfo blockcipheralginfos[];
257 int iv_blocks, buf_blocks, mac_blocks;
259 /* Each function is allowed to use up to buf_blocks * blocksize
260 * bytes of space in buf. data is blocks * blocksize bytes
261 * long. data should be modified in place by encrypt and decrypt;
262 * modes may not change the size of data. iv is always provided and
263 * is always of length iv_blocks * blocksize; encrypt and
264 * decrypt may modify the iv value (in which case the Tcl caller
265 * will get the modified IV) but this is not recommended. mac
266 * should leave the mac, which must be mac_blocks * blocksize
267 * bytes, in buf. (Therefore mac_blocks must be at least
270 const char *(*encrypt)(Byte *data, int nblocks,
271 const Byte *iv, Byte *buf,
272 const BlockCipherAlgInfo *alg, int encr,
274 const char *(*decrypt)(Byte *data, int nblocks,
275 const Byte *iv, Byte *buf,
276 const BlockCipherAlgInfo *alg, int encr,
278 const char *(*mac)(const Byte *data, int nblocks,
279 const Byte *iv, Byte *buf,
280 const BlockCipherAlgInfo *alg,
282 } BlockCipherModeInfo;
284 extern const BlockCipherModeInfo blockciphermodeinfos[];
288 int setnonblock(int fd, int isnonblock);
292 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
293 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
295 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
296 #define TFREE(f) (Tcl_Free((void*)(f)))