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 repeat VALUE COUNT => COUNT copies of VALUE
20 * hbytes h2ulong HEX => ulong (HEX len must be 4)
21 * hbytes ulong2h UL => hex
23 * ulong ul2bitfields VALUE [SIZE TYPE [TYPE-ARG...] ...] => 0/1
24 * ulong bitfields2ul BASE [SIZE TYPE [TYPE-ARG...] ...] => ULONG
25 * goes from left (MSbit) to right (LSbit) where
26 * SIZE is size in bits
27 * TYPE [TYPE-ARGS...] is as below
31 * uint VARNAME/VALUE (VARNAME if ul2bitfields;
32 * ulong VARNAME/VALUE VALUE if bitfields2ul)
34 * ulong ul2int ULONG => INT can fail if >INT_MAX
35 * ulong int2ul INT => ULONG can fail if <0
37 * hbytes shift l|r ULONG BITS fails if BITS >32
38 * hbytes mask A B => A & B
41 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
42 * -1 A is prefix of B but not equal (A<B)
44 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
45 * +2 A is lexically later than B and does not have B as a prefix
47 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
48 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
49 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
51 * hbytes hash ALG MESSAGE => hash
52 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
65 #include <sys/socket.h>
68 #include <arpa/inet.h>
72 typedef unsigned char Byte;
76 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
78 /* Internal representation details: */
79 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
80 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
81 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
82 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
85 void *begin_complex, *end_0;
86 } HBytes_Value; /* overlays internalRep */
89 Byte *dstart; /* always allocated dynamically */
90 int prespace, len, avail;
92 * | SPARE | USED | SPARE |
93 * |<-prespace->|<-len->| |
97 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
99 /* Public interfaces: */
101 extern Tcl_ObjType hbytes_type;
103 int hbytes_len(const HBytes_Value *v);
104 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
105 int hbytes_issentinel(const HBytes_Value *v);
107 Byte *hbytes_prepend(HBytes_Value *upd, int el);
108 Byte *hbytes_append(HBytes_Value *upd, int el);
109 /* return value is where to put the data */
111 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
112 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
113 /* return value points to the removed data, which remains valid
114 * until next op on the HBytes_Value. If original value is
115 * shorter than rl or negative, returns 0 and does nothing. */
117 void hbytes_empty(HBytes_Value *returns);
118 void hbytes_sentinel(HBytes_Value *returns);
119 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
120 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
121 void hbytes_free(const HBytes_Value *frees);
122 /* _empty, _sentinel and _array do not free or read the old value;
123 * _free it first if needed. _free leaves it garbage, so you
124 * have to call _empty to reuse it. _arrayspace doesn't fill
125 * the array; you get a pointer and must fill it with data
128 /* The value made by hbytes_sentinel should not be passed to
129 * anything except HBYTES_IS..., and hbytes_free. */
131 /* from sockaddr.c */
137 extern Tcl_ObjType sockaddr_type;
139 void sockaddr_clear(SockAddr_Value*);
140 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
141 int sockaddr_len(const SockAddr_Value*);
142 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
143 void sockaddr_free(const SockAddr_Value*);
147 extern Tcl_ObjType dgramsockid_type;
148 typedef struct DgramSocket *DgramSockID;
152 int staticerr(Tcl_Interp *ip, const char *m);
153 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
154 void objfreeir(Tcl_Obj *o);
155 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
157 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
158 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
159 int l, const char *prefix);
161 void obj_updatestr_vstringls(Tcl_Obj *o, ...);
162 /* const char*, int, const char*, int, ..., (const char*)0 */
163 void obj_updatestr_string_len(Tcl_Obj *o, const char *str, int l);
164 void obj_updatestr_string(Tcl_Obj *o, const char *str);
173 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
176 /* only do_... functions declared in tables.h */
180 Tcl_ObjType ulong_type;
184 extern Tcl_ObjType enum_nearlytype;
185 extern Tcl_ObjType enum1_nearlytype;
187 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
188 const void *firstentry, size_t entrysize,
190 #define enum_lookup_cached(ip,o,table,what) \
191 (enum_lookup_cached_func((ip),(o), \
192 &(table)[0],sizeof((table)[0]), \
194 /* table should be a pointer to an array of structs of size
195 * entrysize, the first member of which should be a const char*.
196 * The table should finish with a null const char *.
197 * On error, 0 is returned and the ip->result will have been
198 * set to the error message.
201 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
202 const char *opts, const char *what);
207 void memxor(Byte *dest, const Byte *src, int l);
211 int pad, use_algname;
214 extern Tcl_ObjType blockcipherkey_type;
216 /* from algtables.c */
220 int hashsize, blocksize, statesize;
221 void (*init)(void *state);
222 void (*update)(void *state, const Byte *data, int len);
223 void (*final)(void *state, Byte *digest);
224 void (*oneshot)(Byte *digest, const Byte *data, int len);
227 extern const HashAlgInfo hashalginfos[];
230 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
231 void (*crypt)(const void *schedule, const void *in, void *out);
232 /* in and out may be the same, but if they aren't they may not overlap */
233 /* in and out for crypt will have been through block_byteswap */
234 } BlockCipherDirectionInfo;
238 int blocksize, schedule_size, key_min, key_max;
239 void (*byteswap)(Byte *block);
240 BlockCipherDirectionInfo encrypt, decrypt;
241 } BlockCipherAlgInfo;
243 extern const BlockCipherAlgInfo blockcipheralginfos[];
249 int iv_blocks, buf_blocks;
250 const char *(*encrypt)(Byte *data, int blocks,
251 const Byte *iv, Byte *buf,
252 const BlockCipherAlgInfo *alg, int encr,
253 int blocksize, const void *sch);
254 const char *(*decrypt)(Byte *data, int blocks,
255 const Byte *iv, Byte *buf,
256 const BlockCipherAlgInfo *alg, int encr,
257 int blocksize, const void *sch);
258 /* in each case, *iv is provided, but may be modified */
259 } BlockCipherModeInfo;
261 extern const BlockCipherModeInfo blockciphermodeinfos[];
265 int setnonblock(int fd, int isnonblock);
269 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
270 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
272 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
273 #define TFREE(f) (Tcl_Free((void*)(f)))