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 VALUE removes any leading 0 octets
19 * hbytes repeat VALUE COUNT => COUNT copies of VALUE
21 * hbytes h2ulong HEX => ulong (HEX len must be 4)
22 * hbytes ulong2h UL => hex
24 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
25 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
26 * goes from left (MSbit) to right (LSbit) where
27 * SIZE is size in bits
28 * TYPE [TYPE-ARGS...] is as below
32 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
33 * ulong VARNAME/VALUE VALUE if bitfields2ul)
35 * ulong ul2int ULONG => INT can fail if >INT_MAX
36 * ulong int2ul INT => ULONG can fail if <0
38 * hbytes shift l|r ULONG BITS fails if BITS >32
39 * hbytes mask A B => A & B
42 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
43 * -1 A is prefix of B but not equal (A<B)
45 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
46 * +2 A is lexically later than B and does not have B as a prefix
48 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
49 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
50 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
52 * hbytes hash ALG MESSAGE => hash
53 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
66 #include <sys/socket.h>
69 #include <arpa/inet.h>
73 typedef unsigned char Byte;
77 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
79 /* Internal representation details: */
80 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
81 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
82 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
83 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
86 void *begin_complex, *end_0;
87 } HBytes_Value; /* overlays internalRep */
90 Byte *dstart; /* always allocated dynamically */
91 int prespace, len, avail;
93 * | SPARE | USED | SPARE |
94 * |<-prespace->|<-len->| |
98 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
100 /* Public interfaces: */
102 extern Tcl_ObjType hbytes_type;
104 int hbytes_len(const HBytes_Value *v);
105 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
106 int hbytes_issentinel(const HBytes_Value *v);
108 Byte *hbytes_prepend(HBytes_Value *upd, int el);
109 Byte *hbytes_append(HBytes_Value *upd, int el);
110 /* return value is where to put the data */
112 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
113 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
114 /* return value points to the removed data, which remains valid
115 * until next op on the HBytes_Value. If original value is
116 * shorter than rl or negative, returns 0 and does nothing. */
118 void hbytes_empty(HBytes_Value *returns);
119 void hbytes_sentinel(HBytes_Value *returns);
120 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
121 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
122 void hbytes_free(const HBytes_Value *frees);
123 /* _empty, _sentinel and _array do not free or read the old value;
124 * _free it first if needed. _free leaves it garbage, so you
125 * have to call _empty to reuse it. _arrayspace doesn't fill
126 * the array; you get a pointer and must fill it with data
129 /* The value made by hbytes_sentinel should not be passed to
130 * anything except HBYTES_IS..., and hbytes_free. */
132 /* from sockaddr.c */
138 extern Tcl_ObjType sockaddr_type;
140 void sockaddr_clear(SockAddr_Value*);
141 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
142 int sockaddr_len(const SockAddr_Value*);
143 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
144 void sockaddr_free(const SockAddr_Value*);
148 extern Tcl_ObjType dgramsockid_type;
149 typedef struct DgramSocket *DgramSockID;
153 int staticerr(Tcl_Interp *ip, const char *m);
154 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
155 void objfreeir(Tcl_Obj *o);
156 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
158 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
159 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
160 int l, const char *prefix);
162 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
163 /* const char*, int, const char*, int, ..., (const char*)0 */
164 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
165 void obj_updatestr_string(Tcl_Obj *o, const char *str);
174 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
177 /* only do_... functions declared in tables.h */
181 Tcl_ObjType ulong_type;
185 extern Tcl_ObjType enum_nearlytype;
186 extern Tcl_ObjType enum1_nearlytype;
188 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
189 const void *firstentry, size_t entrysize,
191 #define enum_lookup_cached(ip,o,table,what) \
192 (enum_lookup_cached_func((ip),(o), \
193 &(table)[0],sizeof((table)[0]), \
195 /* table should be a pointer to an array of structs of size
196 * entrysize, the first member of which should be a const char*.
197 * The table should finish with a null const char *.
198 * On error, 0 is returned and the ip->result will have been
199 * set to the error message.
202 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
203 const char *opts, const char *what);
208 void memxor(Byte *dest, const Byte *src, int l);
212 int pad, use_algname;
215 extern Tcl_ObjType blockcipherkey_type;
217 /* from algtables.c */
221 int hashsize, blocksize, statesize;
222 void (*init)(void *state);
223 void (*update)(void *state, const void *data, int len);
224 void (*final)(void *state, void *digest);
225 void (*oneshot)(void *digest, const void *data, int len);
228 extern const HashAlgInfo hashalginfos[];
231 void (*make_schedule)(void *schedule, const void *key, int keylen);
232 void (*crypt)(const void *schedule, const void *in, void *out);
233 /* in and out may be the same, but if they aren't they may not overlap */
234 /* in and out for crypt will have been through block_byteswap */
235 } BlockCipherDirectionInfo;
239 int blocksize, schedule_size, key_min, key_max;
240 void (*byteswap)(void *block);
241 BlockCipherDirectionInfo encrypt, decrypt;
242 } BlockCipherAlgInfo;
244 extern const BlockCipherAlgInfo blockcipheralginfos[];
250 int iv_blocks, buf_blocks;
251 const char *(*encrypt)(Byte *data, int blocks,
252 const Byte *iv, Byte *buf,
253 const BlockCipherAlgInfo *alg, int encr,
254 int blocksize, const void *sch);
255 const char *(*decrypt)(Byte *data, int blocks,
256 const Byte *iv, Byte *buf,
257 const BlockCipherAlgInfo *alg, int encr,
258 int blocksize, const void *sch);
259 /* in each case, *iv is provided, but may be modified */
260 } BlockCipherModeInfo;
262 extern const BlockCipherModeInfo blockciphermodeinfos[];
266 int setnonblock(int fd, int isnonblock);
270 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
271 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
273 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
274 #define TFREE(f) (Tcl_Free((void*)(f)))