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)
18 * hbytes h2ulong HEX => ulong (HEX len must be 4)
19 * hbytes ulong2h UL => hex
21 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
22 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
23 * goes from left (MSbit) to right (LSbit) where
24 * SIZE is size in bits
25 * TYPE [TYPE-ARGS...] is as below
29 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
30 * ulong VARNAME/VALUE VALUE if bitfields2ul)
32 * ulong ul2int ULONG => INT can fail if >INT_MAX
33 * ulong int2ul INT => ULONG can fail if <0
35 * hbytes shift l|r ULONG BITS fails if BITS >32
36 * hbytes mask A B => A & B
39 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
40 * -1 A is prefix of B but not equal (A<B)
42 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
43 * +2 A is lexically later than B and does not have B as a prefix
45 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
46 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
47 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
49 * hbytes hash ALG MESSAGE => hash
50 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
63 #include <sys/socket.h>
66 #include <arpa/inet.h>
70 typedef unsigned char Byte;
74 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
76 /* Internal representation details: */
77 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
78 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
79 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
80 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
83 void *begin_complex, *end_0;
84 } HBytes_Value; /* overlays internalRep */
87 Byte *dstart; /* always allocated dynamically */
88 int prespace, len, avail;
90 * | SPARE | USED | SPARE |
91 * |<-prespace->|<-len->| |
95 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
97 /* Public interfaces: */
99 extern Tcl_ObjType hbytes_type;
101 int hbytes_len(const HBytes_Value *v);
102 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
103 int hbytes_issentinel(const HBytes_Value *v);
105 Byte *hbytes_prepend(HBytes_Value *upd, int el);
106 Byte *hbytes_append(HBytes_Value *upd, int el);
107 /* return value is where to put the data */
109 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
110 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
111 /* return value points to the removed data, which remains valid
112 * until next op on the HBytes_Value. If original value is
113 * shorter than rl or negative, returns 0 and does nothing. */
115 void hbytes_empty(HBytes_Value *returns);
116 void hbytes_sentinel(HBytes_Value *returns);
117 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
118 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
119 void hbytes_free(const HBytes_Value *frees);
120 /* _empty, _sentinel and _array do not free or read the old value;
121 * _free it first if needed. _free leaves it garbage, so you
122 * have to call _empty to reuse it. _arrayspace doesn't fill
123 * the array; you get a pointer and must fill it with data
126 /* The value made by hbytes_sentinel should not be passed to
127 * anything except HBYTES_IS..., and hbytes_free. */
129 /* from sockaddr.c */
135 extern Tcl_ObjType sockaddr_type;
137 void sockaddr_clear(SockAddr_Value*);
138 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
139 int sockaddr_len(const SockAddr_Value*);
140 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
141 void sockaddr_free(const SockAddr_Value*);
145 extern Tcl_ObjType dgramsockid_type;
146 typedef struct DgramSocket *DgramSockID;
150 int staticerr(Tcl_Interp *ip, const char *m);
151 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
152 void objfreeir(Tcl_Obj *o);
153 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
155 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
156 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
157 int l, const char *prefix);
159 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
160 /* const char*, int, const char*, int, ..., (const char*)0 */
161 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
162 void obj_updatestr_string(Tcl_Obj *o, const char *str);
171 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
174 /* only do_... functions declared in tables.h */
178 Tcl_ObjType ulong_type;
182 extern Tcl_ObjType enum_nearlytype;
183 extern Tcl_ObjType enum1_nearlytype;
185 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
186 const void *firstentry, size_t entrysize,
188 #define enum_lookup_cached(ip,o,table,what) \
189 (enum_lookup_cached_func((ip),(o), \
190 &(table)[0],sizeof((table)[0]), \
192 /* table should be a pointer to an array of structs of size
193 * entrysize, the first member of which should be a const char*.
194 * The table should finish with a null const char *.
195 * On error, 0 is returned and the ip->result will have been
196 * set to the error message.
199 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
200 const char *opts, const char *what);
205 void memxor(Byte *dest, const Byte *src, int l);
209 int pad, use_algname;
212 extern Tcl_ObjType blockcipherkey_type;
214 /* from algtables.c */
218 int hashsize, blocksize, statesize;
219 void (*init)(void *state);
220 void (*update)(void *state, const Byte *data, int len);
221 void (*final)(void *state, Byte *digest);
222 void (*oneshot)(Byte *digest, const Byte *data, int len);
225 extern const HashAlgInfo hashalginfos[];
228 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
229 void (*crypt)(const void *schedule, const void *in, void *out);
230 /* in and out may be the same, but if they aren't they may not overlap */
231 /* in and out for crypt will have been through block_byteswap */
232 } BlockCipherDirectionInfo;
236 int blocksize, schedule_size, key_min, key_max;
237 void (*byteswap)(Byte *block);
238 BlockCipherDirectionInfo encrypt, decrypt;
239 } BlockCipherAlgInfo;
241 extern const BlockCipherAlgInfo blockcipheralginfos[];
247 int iv_blocks, buf_blocks;
248 const char *(*encrypt)(Byte *data, int blocks,
249 const Byte *iv, Byte *buf,
250 const BlockCipherAlgInfo *alg, int encr,
251 int blocksize, const void *sch);
252 const char *(*decrypt)(Byte *data, int blocks,
253 const Byte *iv, Byte *buf,
254 const BlockCipherAlgInfo *alg, int encr,
255 int blocksize, const void *sch);
256 /* in each case, *iv is provided, but may be modified */
257 } BlockCipherModeInfo;
259 extern const BlockCipherModeInfo blockciphermodeinfos[];
263 int setnonblock(int fd, int isnonblock);
267 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
268 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
270 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
271 #define TFREE(f) (Tcl_Free((void*)(f)))