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 pad pa|ua VAR ALG METH [METHARGS] => worked? (always 1 for p)
32 * hbytes pad pn|un VAR BS METH [METHARGS] => worked? (always 1 for p)
33 * hbytes pad pa|pn VAR ALG|BS pkcs5 => 1
34 * hbytes pad ua|un VAR ALG|BS pkcs5 => worked?
35 * hbytes pad pa|pn VAR ALG|BS rfc2406 NXTHDR => 1
36 * hbytes pad ua|un VAR ALG|BS rfc2406 NXTHDRVAR => worked?
38 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
39 * hbytes blockcipher mac MSG ALG KEY MODE IV => final block
40 * hbytes blockcipher prop PROPERTY ALG => property value
42 * hbytes hash ALG MESSAGE => hash
43 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
44 * hbytes hash-prop PROPERTY ALG => property value
46 * ulong ul2int ULONG => INT can fail if >INT_MAX
47 * ulong int2ul INT => ULONG can fail if <0
48 * ulong mask A B => A & B
49 * ulong add A B => A + B (mod 2^32)
50 * ulong subtract A B => A - B (mod 2^32)
51 * ulong compare A B => 0 -1 (A<B) +1 (A>B)
52 * ulong shift l|r ULONG BITS fails if BITS >32
54 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
55 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
56 * goes from left (MSbit) to right (LSbit) where
57 * SIZE is size in bits
58 * TYPE [TYPE-ARGS...] is as below
62 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
63 * ulong VARNAME/VALUE VALUE if bitfields2ul)
67 * HBYTES BLOCKCIPHER CRYPTFAIL CRYPT block cipher mode failed somehow (!)
68 * HBYTES BLOCKCIPHER CRYPTFAIL MAC HMAC failed somehow (!)
69 * HBYTES BLOCKCIPHER LENGTH block cipher input has unsuitable length
70 * HBYTES BLOCKCIPHER PARAMS key or iv not suitable
71 * HBYTES HMAC PARAMS key, input or output size not suitable
72 * HBYTES LENGTH OVERRUN block too long
73 * HBYTES LENGTH RANGE input length or offset is -ve or silly
74 * HBYTES LENGTH UNDERRUN block too short (or offset too big)
75 * HBYTES LENGTH MISMATCH when blocks must be exactly same length
76 * HBYTES SYNTAX supposed hex block had wrong syntax
77 * HBYTES VALUE OVERFLOW value to be conv'd to hex too big/long
78 * SOCKADDR AFUNIX LENGTH path for AF_UNIX socket too long
79 * SOCKADDR SYNTAX IPV4 bad IPv4 socket address &/or port
80 * SOCKADDR SYNTAX OTHER bad socket addr, couldn't tell what kind
81 * ULONG BITCOUNT NEGATIVE -ve bitcount specified where not allowed
82 * ULONG BITCOUNT OVERRUN attempt to use more than 32 bits
83 * ULONG BITCOUNT UNDERRUN bitfields add up to less than 32
84 * ULONG VALUE NEGATIVE attempt convert -ve integers to ulong
85 * ULONG VALUE OVERFLOW converted value does not fit in result
86 * TUNTAP IFNAME LENGTH tun/tap interface name too long
87 * TUNTAP MTU OVERRUN tun/tap mtu limited to 2^16 bytes
100 #include <sys/socket.h>
103 #include <arpa/inet.h>
107 typedef unsigned char Byte;
111 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
113 /* Internal representation details: */
114 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
115 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
116 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
117 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
120 void *begin_complex, *end_0;
121 } HBytes_Value; /* overlays internalRep */
124 Byte *dstart; /* always allocated dynamically */
125 int prespace, len, avail;
127 * | SPARE | USED | SPARE |
128 * |<-prespace->|<-len->| |
129 * | |<----avail---->|
132 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
134 /* Public interfaces: */
136 extern Tcl_ObjType hbytes_type;
138 int hbytes_len(const HBytes_Value *v);
139 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
140 int hbytes_issentinel(const HBytes_Value *v);
142 Byte *hbytes_prepend(HBytes_Value *upd, int el);
143 Byte *hbytes_append(HBytes_Value *upd, int el);
144 /* return value is where to put the data */
146 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
147 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
148 /* return value points to the removed data, which remains valid
149 * until next op on the HBytes_Value. If original value is
150 * shorter than rl or negative, returns 0 and does nothing. */
152 void hbytes_empty(HBytes_Value *returns);
153 void hbytes_sentinel(HBytes_Value *returns);
154 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
155 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
156 void hbytes_free(const HBytes_Value *frees);
157 /* _empty, _sentinel and _array do not free or read the old value;
158 * _free it first if needed. _free leaves it garbage, so you
159 * have to call _empty to reuse it. _arrayspace doesn't fill
160 * the array; you get a pointer and must fill it with data
163 /* The value made by hbytes_sentinel should not be passed to
164 * anything except HBYTES_IS..., and hbytes_free. */
166 /* from sockaddr.c */
172 extern Tcl_ObjType sockaddr_type;
174 void sockaddr_clear(SockAddr_Value*);
175 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
176 int sockaddr_len(const SockAddr_Value*);
177 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
178 void sockaddr_free(const SockAddr_Value*);
180 /* from scriptinv.c */
182 typedef struct { /* semi-opaque - read only, and then only where commented */
183 Tcl_Interp *ip; /* valid, non-0 and useable if set */
184 Tcl_Obj *obj; /* non-0 iff set (but only test for 0/non-0) */
188 void scriptinv_init(ScriptToInvoke *si);
189 int scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip, Tcl_Obj *newscript);
190 void scriptinv_cancel(ScriptToInvoke *si); /* then don't invoke */
191 /* no separate free function - just cancel */
193 void scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj **argv);
198 const char *const prefix;
203 extern Tcl_ObjType tabledataid_nearlytype;
204 int tabledataid_parse(Tcl_Interp *ip, Tcl_Obj *o, IdDataTable *tab);
208 extern IdDataTable dgram_socks;
209 int newfdposixerr(Tcl_Interp *ip, int fd, const char *m);
213 extern IdDataTable tuntap_socks;
217 int staticerr(Tcl_Interp *ip, const char *m, const char *ec);
218 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
219 void objfreeir(Tcl_Obj *o);
220 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
222 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
223 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
224 int l, const char *prefix);
226 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
227 /* const char*, int, const char*, int, ..., (const char*)0 */
228 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
229 void obj_updatestr_string(Tcl_Obj *o, const char *str);
239 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
242 /* only do_... functions declared in tables.h */
246 Tcl_ObjType ulong_type;
250 extern Tcl_ObjType enum_nearlytype;
251 extern Tcl_ObjType enum1_nearlytype;
253 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
254 const void *firstentry, size_t entrysize,
256 #define enum_lookup_cached(ip,o,table,what) \
257 (enum_lookup_cached_func((ip),(o), \
258 &(table)[0],sizeof((table)[0]), \
260 /* table should be a pointer to an array of structs of size
261 * entrysize, the first member of which should be a const char*.
262 * The table should finish with a null const char *.
263 * On error, 0 is returned and the ip->result will have been
264 * set to the error message.
267 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
268 const char *opts, const char *what);
273 void memxor(Byte *dest, const Byte *src, int l);
277 int pad, use_algname;
280 extern Tcl_ObjType blockcipherkey_type;
282 /* from algtables.c */
287 } BlockCipherPropInfo, HashAlgPropInfo;
291 int hashsize, blocksize, statesize;
292 void (*init)(void *state);
293 void (*update)(void *state, const void *data, int len);
294 void (*final)(void *state, void *digest);
295 void (*oneshot)(void *digest, const void *data, int len);
298 extern const HashAlgInfo hashalginfos[];
301 void (*make_schedule)(void *schedule, const void *key, int keylen);
302 void (*crypt)(const void *schedule, const void *in, void *out);
303 /* in and out may be the same, but if they aren't they may not overlap */
304 /* in and out for crypt will have been through block_byteswap */
305 } BlockCipherPerDirectionInfo;
309 int blocksize, schedule_size, key_min, key_max;
310 BlockCipherPerDirectionInfo encrypt, decrypt;
311 } BlockCipherAlgInfo;
313 extern const BlockCipherAlgInfo blockcipheralginfos[];
319 int iv_blocks, buf_blocks, mac_blocks;
321 /* Each function is allowed to use up to buf_blocks * blocksize
322 * bytes of space in buf. data is blocks * blocksize bytes
323 * long. data should be modified in place by encrypt and decrypt;
324 * modes may not change the size of data. iv is always provided and
325 * is always of length iv_blocks * blocksize; encrypt and
326 * decrypt may modify the iv value (in which case the Tcl caller
327 * will get the modified IV) but this is not recommended. mac
328 * should leave the mac, which must be mac_blocks * blocksize
329 * bytes, in buf. (Therefore mac_blocks must be at least
332 const char *(*encrypt)(Byte *data, int nblocks,
333 const Byte *iv, Byte *buf,
334 const BlockCipherAlgInfo *alg, int encr,
336 const char *(*decrypt)(Byte *data, int nblocks,
337 const Byte *iv, Byte *buf,
338 const BlockCipherAlgInfo *alg, int encr,
340 const char *(*mac)(const Byte *data, int nblocks,
341 const Byte *iv, Byte *buf,
342 const BlockCipherAlgInfo *alg,
344 } BlockCipherModeInfo;
346 extern const BlockCipherModeInfo blockciphermodeinfos[];
350 int setnonblock(int fd, int isnonblock);
354 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
355 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
357 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
358 #define TFREE(f) (Tcl_Free((void*)(f)))