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 (A<B) +1 (A>B)
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)
60 * HBYTES BLOCKCIPHER CRYPTFAIL CRYPT block cipher mode failed somehow (!)
61 * HBYTES BLOCKCIPHER CRYPTFAIL MAC HMAC failed somehow (!)
62 * HBYTES BLOCKCIPHER LENGTH block cipher input has unsuitable length
63 * HBYTES BLOCKCIPHER PARAMS key or iv not suitable
64 * HBYTES HMAC PARAMS key, input or output size not suitable
65 * HBYTES LENGTH OVERRUN block too long
66 * HBYTES LENGTH RANGE input length or offset is -ve or silly
67 * HBYTES LENGTH UNDERRUN block too short (or offset too big)
68 * HBYTES SYNTAX supposed hex block had wrong syntax
69 * HBYTES VALUE OVERFLOW value to be conv'd to hex too big/long
70 * SOCKADDR AFUNIX LENGTH path for AF_UNIX socket too long
71 * SOCKADDR SYNTAX IPV4 bad IPv4 socket address &/or port
72 * SOCKADDR SYNTAX OTHER bad socket addr, couldn't tell what kind
73 * ULONG BITCOUNT NEGATIVE -ve bitcount specified where not allowed
74 * ULONG BITCOUNT OVERRUN attempt to use more than 32 bits
75 * ULONG BITCOUNT UNDERRUN bitfields add up to less than 32
76 * ULONG VALUE NEGATIVE attempt convert -ve integers to ulong
77 * ULONG VALUE OVERFLOW converted value does not fit in result
90 #include <sys/socket.h>
93 #include <arpa/inet.h>
97 typedef unsigned char Byte;
101 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
103 /* Internal representation details: */
104 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
105 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
106 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
107 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
110 void *begin_complex, *end_0;
111 } HBytes_Value; /* overlays internalRep */
114 Byte *dstart; /* always allocated dynamically */
115 int prespace, len, avail;
117 * | SPARE | USED | SPARE |
118 * |<-prespace->|<-len->| |
119 * | |<----avail---->|
122 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
124 /* Public interfaces: */
126 extern Tcl_ObjType hbytes_type;
128 int hbytes_len(const HBytes_Value *v);
129 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
130 int hbytes_issentinel(const HBytes_Value *v);
132 Byte *hbytes_prepend(HBytes_Value *upd, int el);
133 Byte *hbytes_append(HBytes_Value *upd, int el);
134 /* return value is where to put the data */
136 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
137 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
138 /* return value points to the removed data, which remains valid
139 * until next op on the HBytes_Value. If original value is
140 * shorter than rl or negative, returns 0 and does nothing. */
142 void hbytes_empty(HBytes_Value *returns);
143 void hbytes_sentinel(HBytes_Value *returns);
144 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
145 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
146 void hbytes_free(const HBytes_Value *frees);
147 /* _empty, _sentinel and _array do not free or read the old value;
148 * _free it first if needed. _free leaves it garbage, so you
149 * have to call _empty to reuse it. _arrayspace doesn't fill
150 * the array; you get a pointer and must fill it with data
153 /* The value made by hbytes_sentinel should not be passed to
154 * anything except HBYTES_IS..., and hbytes_free. */
156 /* from sockaddr.c */
162 extern Tcl_ObjType sockaddr_type;
164 void sockaddr_clear(SockAddr_Value*);
165 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
166 int sockaddr_len(const SockAddr_Value*);
167 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
168 void sockaddr_free(const SockAddr_Value*);
172 extern Tcl_ObjType dgramsockid_type;
173 typedef struct DgramSocket *DgramSockID;
177 int staticerr(Tcl_Interp *ip, const char *m, const char *ec);
178 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
179 void objfreeir(Tcl_Obj *o);
180 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
182 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
183 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
184 int l, const char *prefix);
186 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
187 /* const char*, int, const char*, int, ..., (const char*)0 */
188 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
189 void obj_updatestr_string(Tcl_Obj *o, const char *str);
199 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
202 /* only do_... functions declared in tables.h */
206 Tcl_ObjType ulong_type;
210 extern Tcl_ObjType enum_nearlytype;
211 extern Tcl_ObjType enum1_nearlytype;
213 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
214 const void *firstentry, size_t entrysize,
216 #define enum_lookup_cached(ip,o,table,what) \
217 (enum_lookup_cached_func((ip),(o), \
218 &(table)[0],sizeof((table)[0]), \
220 /* table should be a pointer to an array of structs of size
221 * entrysize, the first member of which should be a const char*.
222 * The table should finish with a null const char *.
223 * On error, 0 is returned and the ip->result will have been
224 * set to the error message.
227 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
228 const char *opts, const char *what);
233 void memxor(Byte *dest, const Byte *src, int l);
237 int pad, use_algname;
240 extern Tcl_ObjType blockcipherkey_type;
242 /* from algtables.c */
246 int hashsize, blocksize, statesize;
247 void (*init)(void *state);
248 void (*update)(void *state, const void *data, int len);
249 void (*final)(void *state, void *digest);
250 void (*oneshot)(void *digest, const void *data, int len);
253 extern const HashAlgInfo hashalginfos[];
256 void (*make_schedule)(void *schedule, const void *key, int keylen);
257 void (*crypt)(const void *schedule, const void *in, void *out);
258 /* in and out may be the same, but if they aren't they may not overlap */
259 /* in and out for crypt will have been through block_byteswap */
260 } BlockCipherPerDirectionInfo;
264 int blocksize, schedule_size, key_min, key_max;
265 void (*byteswap)(void *block);
266 BlockCipherPerDirectionInfo encrypt, decrypt;
267 } BlockCipherAlgInfo;
269 extern const BlockCipherAlgInfo blockcipheralginfos[];
275 int iv_blocks, buf_blocks, mac_blocks;
277 /* Each function is allowed to use up to buf_blocks * blocksize
278 * bytes of space in buf. data is blocks * blocksize bytes
279 * long. data should be modified in place by encrypt and decrypt;
280 * modes may not change the size of data. iv is always provided and
281 * is always of length iv_blocks * blocksize; encrypt and
282 * decrypt may modify the iv value (in which case the Tcl caller
283 * will get the modified IV) but this is not recommended. mac
284 * should leave the mac, which must be mac_blocks * blocksize
285 * bytes, in buf. (Therefore mac_blocks must be at least
288 const char *(*encrypt)(Byte *data, int nblocks,
289 const Byte *iv, Byte *buf,
290 const BlockCipherAlgInfo *alg, int encr,
292 const char *(*decrypt)(Byte *data, int nblocks,
293 const Byte *iv, Byte *buf,
294 const BlockCipherAlgInfo *alg, int encr,
296 const char *(*mac)(const Byte *data, int nblocks,
297 const Byte *iv, Byte *buf,
298 const BlockCipherAlgInfo *alg,
300 } BlockCipherModeInfo;
302 extern const BlockCipherModeInfo blockciphermodeinfos[];
306 int setnonblock(int fd, int isnonblock);
310 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
311 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
313 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
314 #define TFREE(f) (Tcl_Free((void*)(f)))