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 address too short
70 * hbytes mask-map amend MAP-VAR PREFIX PREFIX-LENGTH DATA
71 * a maskmap MAP is [list [list PREFIX PREFIX-LENGTH DATA]]
72 * sorted first by descending PREFIX-LENGTH and then by PREFIX
73 * each PREFIX is truncated to the shortest number of pairs of
74 * 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 * SOCKADDR AFUNIX LENGTH path for AF_UNIX socket too long
90 * SOCKADDR SYNTAX IPV4 bad IPv4 socket address &/or port
91 * SOCKADDR SYNTAX OTHER bad socket addr, couldn't tell what kind
92 * ULONG BITCOUNT NEGATIVE -ve bitcount specified where not allowed
93 * ULONG BITCOUNT OVERRUN attempt to use more than 32 bits
94 * ULONG BITCOUNT UNDERRUN bitfields add up to less than 32
95 * ULONG VALUE NEGATIVE attempt convert -ve integers to ulong
96 * ULONG VALUE OVERFLOW converted value does not fit in result
97 * TUNTAP IFNAME LENGTH tun/tap interface name too long
98 * TUNTAP MTU OVERRUN tun/tap mtu limited to 2^16 bytes
100 * Refs: HMAC: RFC2104
111 #include <sys/socket.h>
114 #include <arpa/inet.h>
116 #include <tcl8.3/tcl.h>
118 typedef unsigned char Byte;
122 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
124 /* Internal representation details: */
125 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
126 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
127 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
128 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
131 void *begin_complex, *end_0;
132 } HBytes_Value; /* overlays internalRep */
135 Byte *dstart; /* always allocated dynamically */
136 int prespace, len, avail;
138 * | SPARE | USED | SPARE |
139 * |<-prespace->|<-len->| |
140 * | |<----avail---->|
143 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
145 /* Public interfaces: */
147 extern Tcl_ObjType hbytes_type;
149 int hbytes_len(const HBytes_Value *v);
150 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
151 int hbytes_issentinel(const HBytes_Value *v);
153 Byte *hbytes_prepend(HBytes_Value *upd, int el);
154 Byte *hbytes_append(HBytes_Value *upd, int el);
155 /* return value is where to put the data */
157 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
158 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
159 /* return value points to the removed data, which remains valid
160 * until next op on the HBytes_Value. If original value is
161 * shorter than rl or negative, returns 0 and does nothing. */
163 void hbytes_empty(HBytes_Value *returns);
164 void hbytes_sentinel(HBytes_Value *returns);
165 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
166 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
167 void hbytes_free(const HBytes_Value *frees);
168 /* _empty, _sentinel and _array do not free or read the old value;
169 * _free it first if needed. _free leaves it garbage, so you
170 * have to call _empty to reuse it. _arrayspace doesn't fill
171 * the array; you get a pointer and must fill it with data
174 /* The value made by hbytes_sentinel should not be passed to
175 * anything except HBYTES_IS..., and hbytes_free. */
177 /* from sockaddr.c */
183 extern Tcl_ObjType sockaddr_type;
185 void sockaddr_clear(SockAddr_Value*);
186 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
187 int sockaddr_len(const SockAddr_Value*);
188 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
189 void sockaddr_free(const SockAddr_Value*);
191 /* from scriptinv.c */
193 typedef struct { /* semi-opaque - read only, and then only where commented */
194 Tcl_Interp *ip; /* valid, non-0 and useable if set */
195 Tcl_Obj *obj; /* non-0 iff set (but only test for 0/non-0) */
199 void scriptinv_init(ScriptToInvoke *si);
200 int scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip, Tcl_Obj *newscript);
201 void scriptinv_cancel(ScriptToInvoke *si); /* then don't invoke */
202 /* no separate free function - just cancel */
204 void scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj **argv);
209 const char *const prefix;
214 extern Tcl_ObjType tabledataid_nearlytype;
215 int tabledataid_parse(Tcl_Interp *ip, Tcl_Obj *o, IdDataTable *tab);
219 extern IdDataTable dgram_socks;
220 int newfdposixerr(Tcl_Interp *ip, int fd, const char *m);
224 extern IdDataTable tuntap_socks;
228 int staticerr(Tcl_Interp *ip, const char *m, const char *ec);
229 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
230 void objfreeir(Tcl_Obj *o);
231 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
233 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
234 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
235 int l, const char *prefix);
237 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
238 /* const char*, int, const char*, int, ..., (const char*)0 */
239 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
240 void obj_updatestr_string(Tcl_Obj *o, const char *str);
249 void init_somethingv(Something_Var *sth);
250 void fini_somethingv(Tcl_Interp *ip, int rc, Something_Var *sth);
251 int pat_somethingv(Tcl_Interp *ip, Tcl_Obj *var,
252 Something_Var *sth, Tcl_ObjType *type);
261 typedef struct MaskMap_Value MaskMap_Value;
268 extern Tcl_ObjType maskmap_type;
271 /* only do_... functions declared in tables.h */
275 Tcl_ObjType ulong_type;
279 extern Tcl_ObjType enum_nearlytype;
280 extern Tcl_ObjType enum1_nearlytype;
282 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
283 const void *firstentry, size_t entrysize,
285 #define enum_lookup_cached(ip,o,table,what) \
286 (enum_lookup_cached_func((ip),(o), \
287 &(table)[0],sizeof((table)[0]), \
289 /* table should be a pointer to an array of structs of size
290 * entrysize, the first member of which should be a const char*.
291 * The table should finish with a null const char *.
292 * On error, 0 is returned and the ip->result will have been
293 * set to the error message.
296 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
297 const char *opts, const char *what);
302 void memxor(Byte *dest, const Byte *src, int l);
306 int pad, use_algname;
309 extern Tcl_ObjType blockcipherkey_type;
311 /* from algtables.c */
316 } BlockCipherPropInfo, HashAlgPropInfo;
320 int hashsize, blocksize, statesize;
321 void (*init)(void *state);
322 void (*update)(void *state, const void *data, int len);
323 void (*final)(void *state, void *digest);
324 void (*oneshot)(void *digest, const void *data, int len);
327 extern const HashAlgInfo hashalginfos[];
330 void (*make_schedule)(void *schedule, const void *key, int keylen);
331 void (*crypt)(const void *schedule, const void *in, void *out);
332 /* in and out may be the same, but if they aren't they may not overlap */
333 /* in and out for crypt will have been through block_byteswap */
334 } BlockCipherPerDirectionInfo;
338 int blocksize, schedule_size, key_min, key_max;
339 BlockCipherPerDirectionInfo encrypt, decrypt;
340 } BlockCipherAlgInfo;
342 extern const BlockCipherAlgInfo blockcipheralginfos[];
348 int iv_blocks, buf_blocks, mac_blocks;
350 /* Each function is allowed to use up to buf_blocks * blocksize
351 * bytes of space in buf. data is blocks * blocksize bytes
352 * long. data should be modified in place by encrypt and decrypt;
353 * modes may not change the size of data. iv is always provided and
354 * is always of length iv_blocks * blocksize; encrypt and
355 * decrypt may modify the iv value (in which case the Tcl caller
356 * will get the modified IV) but this is not recommended. mac
357 * should leave the mac, which must be mac_blocks * blocksize
358 * bytes, in buf. (Therefore mac_blocks must be at least
361 const char *(*encrypt)(Byte *data, int nblocks,
362 const Byte *iv, Byte *buf,
363 const BlockCipherAlgInfo *alg, int encr,
365 const char *(*decrypt)(Byte *data, int nblocks,
366 const Byte *iv, Byte *buf,
367 const BlockCipherAlgInfo *alg, int encr,
369 const char *(*mac)(const Byte *data, int nblocks,
370 const Byte *iv, Byte *buf,
371 const BlockCipherAlgInfo *alg,
373 } BlockCipherModeInfo;
375 extern const BlockCipherModeInfo blockciphermodeinfos[];
379 int setnonblock(int fd, int isnonblock);
383 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
384 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
386 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
387 #define TFREE(f) (Tcl_Free((void*)(f)))