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
20 * hbytes zeroes COUNT => COUNT zero bytes
21 * hbytes random COUNT => COUNT random bytes
22 * hbytes xor VAR VALUE $VAR (+)= VALUE
24 * hbytes ushort2h LONG => LONG must be <2^16, returns as hex
25 * hbytes h2ushort HEX => |HEX| must be 2 bytes, returns as ulong
28 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
29 * -1 A is prefix of B but not equal (A<B)
31 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
32 * +2 A is lexically later than B and does not have B as a prefix
34 * hbytes pad pa|ua VAR ALG METH [METHARGS] => worked? (always 1 for p)
35 * hbytes pad pn|un VAR BS METH [METHARGS] => worked? (always 1 for p)
36 * hbytes pad pa|pn VAR ALG|BS pkcs5 => 1
37 * hbytes pad ua|un VAR ALG|BS pkcs5 => worked?
38 * hbytes pad pa|pn VAR ALG|BS rfc2406 NXTHDR => 1
39 * hbytes pad ua|un VAR ALG|BS rfc2406 NXTHDRVAR => worked?
41 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
42 * hbytes blockcipher mac MSG ALG KEY MODE IV => final block
43 * hbytes blockcipher prop PROPERTY ALG => property value
45 * hbytes hash ALG MESSAGE => hash
46 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
47 * hbytes hash-prop PROPERTY ALG => property value
49 * ulong ul2int ULONG => INT can fail if >INT_MAX
50 * ulong int2ul INT => ULONG can fail if <0
51 * ulong mask A B => A & B
52 * ulong add A B => A + B (mod 2^32)
53 * ulong subtract A B => A - B (mod 2^32)
54 * ulong compare A B => 0 -1 (A<B) +1 (A>B)
55 * ulong shift l|r ULONG BITS fails if BITS >32
57 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
58 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
59 * goes from left (MSbit) to right (LSbit) where
60 * SIZE is size in bits
61 * TYPE [TYPE-ARGS...] is as below
65 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
66 * ulong VARNAME/VALUE VALUE if bitfields2ul)
68 * hbytes mask-map lookup MAP-VAR ADDRESS [DEFAULT] => DATA
69 * error on missing default or if any prefix longer than address
70 * hbytes mask-map amend MAP-VAR PREFIX PREFIX-LENGTH DATA
71 * a maskmap MAP is [list [list PREFIX PREFIX-LENGTH DATA]] sorted
72 * first by descending PREFIX-LENGTH and then by ascending PREFIX
73 * each PREFIX _in the map_ is truncated to the shortest number of
74 * pairs of hex digits which can represent it
78 * HBYTES BLOCKCIPHER CRYPTFAIL CRYPT block cipher mode failed somehow (!)
79 * HBYTES BLOCKCIPHER CRYPTFAIL MAC HMAC failed somehow (!)
80 * HBYTES BLOCKCIPHER LENGTH block cipher input has unsuitable length
81 * HBYTES BLOCKCIPHER PARAMS key or iv not suitable
82 * HBYTES HMAC PARAMS key, input or output size not suitable
83 * HBYTES LENGTH OVERRUN block too long
84 * HBYTES LENGTH RANGE input length or offset is -ve or silly
85 * HBYTES LENGTH UNDERRUN block too short (or offset too big)
86 * HBYTES LENGTH MISMATCH when blocks must be exactly same length
87 * HBYTES SYNTAX supposed hex block had wrong syntax
88 * HBYTES VALUE OVERFLOW value to be conv'd to hex too big/long
89 * HBYTES MASKMAP NOMATCH no addr/mask matches address for lookup
90 * HBYTES MASKMAP UNDERRUN addr value for lookup is too short
91 * HBYTES MASKMAP SYNTAX LLENGTH value for mask-map entry not llength==3
92 * HBYTES MASKMAP SYNTAX UNDERRUN value for mask-map entry hex too short
93 * HBYTES MASKMAP SYNTAX OVERRUN actual mask-map entry hex too short
94 * HBYTES MASKMAP SYNTAX ORDER actual mask-map is disordered
95 * HBYTES MASKMAP SYNTAX EXCLBITS mask-map has 1-bits outside prefix len
96 * SOCKADDR AFUNIX LENGTH path for AF_UNIX socket too long
97 * SOCKADDR SYNTAX IPV4 bad IPv4 socket address &/or port
98 * SOCKADDR SYNTAX OTHER bad socket addr, couldn't tell what kind
99 * ULONG BITCOUNT NEGATIVE -ve bitcount specified where not allowed
100 * ULONG BITCOUNT OVERRUN attempt to use more than 32 bits
101 * ULONG BITCOUNT UNDERRUN bitfields add up to less than 32
102 * ULONG VALUE NEGATIVE attempt convert -ve integers to ulong
103 * ULONG VALUE OVERFLOW converted value does not fit in result
104 * TUNTAP IFNAME LENGTH tun/tap interface name too long
105 * TUNTAP MTU OVERRUN tun/tap mtu limited to 2^16 bytes
107 * Refs: HMAC: RFC2104
118 #include <sys/socket.h>
121 #include <arpa/inet.h>
123 #include <tcl8.3/tcl.h>
125 typedef unsigned char Byte;
129 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
131 /* Internal representation details: */
132 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
133 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
134 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
135 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
138 void *begin_complex, *end_0;
139 } HBytes_Value; /* overlays internalRep */
142 Byte *dstart; /* always allocated dynamically */
143 int prespace, len, avail;
145 * | SPARE | USED | SPARE |
146 * |<-prespace->|<-len->| |
147 * | |<----avail---->|
150 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
152 /* Public interfaces: */
154 extern Tcl_ObjType hbytes_type;
156 int hbytes_len(const HBytes_Value *v);
157 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
158 int hbytes_issentinel(const HBytes_Value *v);
160 Byte *hbytes_prepend(HBytes_Value *upd, int el);
161 Byte *hbytes_append(HBytes_Value *upd, int el);
162 /* return value is where to put the data */
164 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
165 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
166 /* return value points to the removed data, which remains valid
167 * until next op on the HBytes_Value. If original value is
168 * shorter than rl or negative, returns 0 and does nothing. */
170 void hbytes_empty(HBytes_Value *returns);
171 void hbytes_sentinel(HBytes_Value *returns);
172 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
173 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
174 void hbytes_free(const HBytes_Value *frees);
175 /* _empty, _sentinel and _array do not free or read the old value;
176 * _free it first if needed. _free leaves it garbage, so you
177 * have to call _empty to reuse it. _arrayspace doesn't fill
178 * the array; you get a pointer and must fill it with data
181 /* The value made by hbytes_sentinel should not be passed to
182 * anything except HBYTES_IS..., and hbytes_free. */
184 /* from sockaddr.c */
190 extern Tcl_ObjType sockaddr_type;
192 void sockaddr_clear(SockAddr_Value*);
193 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
194 int sockaddr_len(const SockAddr_Value*);
195 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
196 void sockaddr_free(const SockAddr_Value*);
198 /* from scriptinv.c */
200 typedef struct { /* semi-opaque - read only, and then only where commented */
201 Tcl_Interp *ip; /* valid, non-0 and useable if set */
202 Tcl_Obj *obj; /* non-0 iff set (but only test for 0/non-0) */
206 void scriptinv_init(ScriptToInvoke *si);
207 int scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip, Tcl_Obj *newscript);
208 void scriptinv_cancel(ScriptToInvoke *si); /* then don't invoke */
209 /* no separate free function - just cancel */
211 void scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj **argv);
216 const char *const prefix;
221 extern Tcl_ObjType tabledataid_nearlytype;
222 int tabledataid_parse(Tcl_Interp *ip, Tcl_Obj *o, IdDataTable *tab);
226 extern IdDataTable dgram_socks;
227 int newfdposixerr(Tcl_Interp *ip, int fd, const char *m);
231 extern IdDataTable tuntap_socks;
235 int staticerr(Tcl_Interp *ip, const char *m, const char *ec);
236 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
237 void objfreeir(Tcl_Obj *o);
238 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
240 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
241 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
242 int l, const char *prefix);
244 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
245 /* const char*, int, const char*, int, ..., (const char*)0 */
246 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
247 void obj_updatestr_string(Tcl_Obj *o, const char *str);
256 void init_somethingv(Something_Var *sth);
257 void fini_somethingv(Tcl_Interp *ip, int rc, Something_Var *sth);
258 int pat_somethingv(Tcl_Interp *ip, Tcl_Obj *var,
259 Something_Var *sth, Tcl_ObjType *type);
268 typedef struct MaskMap_Value MaskMap_Value;
275 extern Tcl_ObjType maskmap_type;
278 /* only do_... functions declared in tables.h */
282 Tcl_ObjType ulong_type;
286 extern Tcl_ObjType enum_nearlytype;
287 extern Tcl_ObjType enum1_nearlytype;
289 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
290 const void *firstentry, size_t entrysize,
292 #define enum_lookup_cached(ip,o,table,what) \
293 (enum_lookup_cached_func((ip),(o), \
294 &(table)[0],sizeof((table)[0]), \
296 /* table should be a pointer to an array of structs of size
297 * entrysize, the first member of which should be a const char*.
298 * The table should finish with a null const char *.
299 * On error, 0 is returned and the ip->result will have been
300 * set to the error message.
303 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
304 const char *opts, const char *what);
309 void memxor(Byte *dest, const Byte *src, int l);
313 int pad, use_algname;
316 extern Tcl_ObjType blockcipherkey_type;
318 /* from algtables.c */
323 } BlockCipherPropInfo, HashAlgPropInfo;
327 int hashsize, blocksize, statesize;
328 void (*init)(void *state);
329 void (*update)(void *state, const void *data, int len);
330 void (*final)(void *state, void *digest);
331 void (*oneshot)(void *digest, const void *data, int len);
334 extern const HashAlgInfo hashalginfos[];
337 void (*make_schedule)(void *schedule, const void *key, int keylen);
338 void (*crypt)(const void *schedule, const void *in, void *out);
339 /* in and out may be the same, but if they aren't they may not overlap */
340 /* in and out for crypt will have been through block_byteswap */
341 } BlockCipherPerDirectionInfo;
345 int blocksize, schedule_size, key_min, key_max;
346 BlockCipherPerDirectionInfo encrypt, decrypt;
347 } BlockCipherAlgInfo;
349 extern const BlockCipherAlgInfo blockcipheralginfos[];
355 int iv_blocks, buf_blocks, mac_blocks;
357 /* Each function is allowed to use up to buf_blocks * blocksize
358 * bytes of space in buf. data is blocks * blocksize bytes
359 * long. data should be modified in place by encrypt and decrypt;
360 * modes may not change the size of data. iv is always provided and
361 * is always of length iv_blocks * blocksize; encrypt and
362 * decrypt may modify the iv value (in which case the Tcl caller
363 * will get the modified IV) but this is not recommended. mac
364 * should leave the mac, which must be mac_blocks * blocksize
365 * bytes, in buf. (Therefore mac_blocks must be at least
368 const char *(*encrypt)(Byte *data, int nblocks,
369 const Byte *iv, Byte *buf,
370 const BlockCipherAlgInfo *alg, int encr,
372 const char *(*decrypt)(Byte *data, int nblocks,
373 const Byte *iv, Byte *buf,
374 const BlockCipherAlgInfo *alg, int encr,
376 const char *(*mac)(const Byte *data, int nblocks,
377 const Byte *iv, Byte *buf,
378 const BlockCipherAlgInfo *alg,
380 } BlockCipherModeInfo;
382 extern const BlockCipherModeInfo blockciphermodeinfos[];
386 int setnonblock(int fd, int isnonblock);
390 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
391 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
393 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
394 #define TFREE(f) (Tcl_Free((void*)(f)))
395 #define TREALLOC(p,l) ((void*)Tcl_Realloc((void*)(p),(l)))