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)
70 * HBYTES BLOCKCIPHER CRYPTFAIL CRYPT block cipher mode failed somehow (!)
71 * HBYTES BLOCKCIPHER CRYPTFAIL MAC HMAC failed somehow (!)
72 * HBYTES BLOCKCIPHER LENGTH block cipher input has unsuitable length
73 * HBYTES BLOCKCIPHER PARAMS key or iv not suitable
74 * HBYTES HMAC PARAMS key, input or output size not suitable
75 * HBYTES LENGTH OVERRUN block too long
76 * HBYTES LENGTH RANGE input length or offset is -ve or silly
77 * HBYTES LENGTH UNDERRUN block too short (or offset too big)
78 * HBYTES LENGTH MISMATCH when blocks must be exactly same length
79 * HBYTES SYNTAX supposed hex block had wrong syntax
80 * HBYTES VALUE OVERFLOW value to be conv'd to hex too big/long
81 * SOCKADDR AFUNIX LENGTH path for AF_UNIX socket too long
82 * SOCKADDR SYNTAX IPV4 bad IPv4 socket address &/or port
83 * SOCKADDR SYNTAX OTHER bad socket addr, couldn't tell what kind
84 * ULONG BITCOUNT NEGATIVE -ve bitcount specified where not allowed
85 * ULONG BITCOUNT OVERRUN attempt to use more than 32 bits
86 * ULONG BITCOUNT UNDERRUN bitfields add up to less than 32
87 * ULONG VALUE NEGATIVE attempt convert -ve integers to ulong
88 * ULONG VALUE OVERFLOW converted value does not fit in result
89 * TUNTAP IFNAME LENGTH tun/tap interface name too long
90 * TUNTAP MTU OVERRUN tun/tap mtu limited to 2^16 bytes
103 #include <sys/socket.h>
106 #include <arpa/inet.h>
110 typedef unsigned char Byte;
114 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
116 /* Internal representation details: */
117 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
118 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
119 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
120 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
123 void *begin_complex, *end_0;
124 } HBytes_Value; /* overlays internalRep */
127 Byte *dstart; /* always allocated dynamically */
128 int prespace, len, avail;
130 * | SPARE | USED | SPARE |
131 * |<-prespace->|<-len->| |
132 * | |<----avail---->|
135 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
137 /* Public interfaces: */
139 extern Tcl_ObjType hbytes_type;
141 int hbytes_len(const HBytes_Value *v);
142 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
143 int hbytes_issentinel(const HBytes_Value *v);
145 Byte *hbytes_prepend(HBytes_Value *upd, int el);
146 Byte *hbytes_append(HBytes_Value *upd, int el);
147 /* return value is where to put the data */
149 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
150 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
151 /* return value points to the removed data, which remains valid
152 * until next op on the HBytes_Value. If original value is
153 * shorter than rl or negative, returns 0 and does nothing. */
155 void hbytes_empty(HBytes_Value *returns);
156 void hbytes_sentinel(HBytes_Value *returns);
157 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
158 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
159 void hbytes_free(const HBytes_Value *frees);
160 /* _empty, _sentinel and _array do not free or read the old value;
161 * _free it first if needed. _free leaves it garbage, so you
162 * have to call _empty to reuse it. _arrayspace doesn't fill
163 * the array; you get a pointer and must fill it with data
166 /* The value made by hbytes_sentinel should not be passed to
167 * anything except HBYTES_IS..., and hbytes_free. */
169 /* from sockaddr.c */
175 extern Tcl_ObjType sockaddr_type;
177 void sockaddr_clear(SockAddr_Value*);
178 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
179 int sockaddr_len(const SockAddr_Value*);
180 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
181 void sockaddr_free(const SockAddr_Value*);
183 /* from scriptinv.c */
185 typedef struct { /* semi-opaque - read only, and then only where commented */
186 Tcl_Interp *ip; /* valid, non-0 and useable if set */
187 Tcl_Obj *obj; /* non-0 iff set (but only test for 0/non-0) */
191 void scriptinv_init(ScriptToInvoke *si);
192 int scriptinv_set(ScriptToInvoke *si, Tcl_Interp *ip, Tcl_Obj *newscript);
193 void scriptinv_cancel(ScriptToInvoke *si); /* then don't invoke */
194 /* no separate free function - just cancel */
196 void scriptinv_invoke(ScriptToInvoke *si, int argc, Tcl_Obj **argv);
201 const char *const prefix;
206 extern Tcl_ObjType tabledataid_nearlytype;
207 int tabledataid_parse(Tcl_Interp *ip, Tcl_Obj *o, IdDataTable *tab);
211 extern IdDataTable dgram_socks;
212 int newfdposixerr(Tcl_Interp *ip, int fd, const char *m);
216 extern IdDataTable tuntap_socks;
220 int staticerr(Tcl_Interp *ip, const char *m, const char *ec);
221 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
222 void objfreeir(Tcl_Obj *o);
223 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
225 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
226 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
227 int l, const char *prefix);
229 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
230 /* const char*, int, const char*, int, ..., (const char*)0 */
231 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
232 void obj_updatestr_string(Tcl_Obj *o, const char *str);
242 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
245 /* only do_... functions declared in tables.h */
249 Tcl_ObjType ulong_type;
253 extern Tcl_ObjType enum_nearlytype;
254 extern Tcl_ObjType enum1_nearlytype;
256 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
257 const void *firstentry, size_t entrysize,
259 #define enum_lookup_cached(ip,o,table,what) \
260 (enum_lookup_cached_func((ip),(o), \
261 &(table)[0],sizeof((table)[0]), \
263 /* table should be a pointer to an array of structs of size
264 * entrysize, the first member of which should be a const char*.
265 * The table should finish with a null const char *.
266 * On error, 0 is returned and the ip->result will have been
267 * set to the error message.
270 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
271 const char *opts, const char *what);
276 void memxor(Byte *dest, const Byte *src, int l);
280 int pad, use_algname;
283 extern Tcl_ObjType blockcipherkey_type;
285 /* from algtables.c */
290 } BlockCipherPropInfo, HashAlgPropInfo;
294 int hashsize, blocksize, statesize;
295 void (*init)(void *state);
296 void (*update)(void *state, const void *data, int len);
297 void (*final)(void *state, void *digest);
298 void (*oneshot)(void *digest, const void *data, int len);
301 extern const HashAlgInfo hashalginfos[];
304 void (*make_schedule)(void *schedule, const void *key, int keylen);
305 void (*crypt)(const void *schedule, const void *in, void *out);
306 /* in and out may be the same, but if they aren't they may not overlap */
307 /* in and out for crypt will have been through block_byteswap */
308 } BlockCipherPerDirectionInfo;
312 int blocksize, schedule_size, key_min, key_max;
313 BlockCipherPerDirectionInfo encrypt, decrypt;
314 } BlockCipherAlgInfo;
316 extern const BlockCipherAlgInfo blockcipheralginfos[];
322 int iv_blocks, buf_blocks, mac_blocks;
324 /* Each function is allowed to use up to buf_blocks * blocksize
325 * bytes of space in buf. data is blocks * blocksize bytes
326 * long. data should be modified in place by encrypt and decrypt;
327 * modes may not change the size of data. iv is always provided and
328 * is always of length iv_blocks * blocksize; encrypt and
329 * decrypt may modify the iv value (in which case the Tcl caller
330 * will get the modified IV) but this is not recommended. mac
331 * should leave the mac, which must be mac_blocks * blocksize
332 * bytes, in buf. (Therefore mac_blocks must be at least
335 const char *(*encrypt)(Byte *data, int nblocks,
336 const Byte *iv, Byte *buf,
337 const BlockCipherAlgInfo *alg, int encr,
339 const char *(*decrypt)(Byte *data, int nblocks,
340 const Byte *iv, Byte *buf,
341 const BlockCipherAlgInfo *alg, int encr,
343 const char *(*mac)(const Byte *data, int nblocks,
344 const Byte *iv, Byte *buf,
345 const BlockCipherAlgInfo *alg,
347 } BlockCipherModeInfo;
349 extern const BlockCipherModeInfo blockciphermodeinfos[];
353 int setnonblock(int fd, int isnonblock);
357 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
358 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
360 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
361 #define TFREE(f) (Tcl_Free((void*)(f)))