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)
17 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
18 * -1 A is prefix of B but not equal (A<B)
20 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
21 * +2 A is lexically later than B and does not have B as a prefix
23 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
24 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
25 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
27 * hbytes hash ALG MESSAGE => hash
28 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
41 #include <sys/socket.h>
44 #include <arpa/inet.h>
48 typedef unsigned char Byte;
52 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
54 /* Internal representation details: */
55 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
56 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
57 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
58 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
61 void *begin_complex, *end_0;
62 } HBytes_Value; /* overlays internalRep */
65 Byte *dstart; /* always allocated dynamically */
66 int prespace, len, avail;
68 * | SPARE | USED | SPARE |
69 * |<-prespace->|<-len->| |
73 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
75 /* Public interfaces: */
77 extern Tcl_ObjType hbytes_type;
79 int hbytes_len(const HBytes_Value *v);
80 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
81 int hbytes_issentinel(const HBytes_Value *v);
83 Byte *hbytes_prepend(HBytes_Value *upd, int el);
84 Byte *hbytes_append(HBytes_Value *upd, int el);
85 /* return value is where to put the data */
87 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
88 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
89 /* return value points to the removed data, which remains valid
90 * until next op on the HBytes_Value. If original value is
91 * shorter than rl or negative, returns 0 and does nothing. */
93 void hbytes_empty(HBytes_Value *returns);
94 void hbytes_sentinel(HBytes_Value *returns);
95 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
96 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
97 void hbytes_free(const HBytes_Value *frees);
98 /* _empty, _sentinel and _array do not free or read the old value;
99 * _free it first if needed. _free leaves it garbage, so you
100 * have to call _empty to reuse it. _arrayspace doesn't fill
101 * the array; you get a pointer and must fill it with data
104 /* The value made by hbytes_sentinel should not be passed to
105 * anything except HBYTES_IS..., and hbytes_free. */
107 /* from sockaddr.c */
113 extern Tcl_ObjType sockaddr_type;
115 void sockaddr_clear(SockAddr_Value*);
116 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
117 int sockaddr_len(const SockAddr_Value*);
118 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
119 void sockaddr_free(const SockAddr_Value*);
123 extern Tcl_ObjType sockid_type;
124 typedef struct DgramSocket *DgramSockID;
128 int staticerr(Tcl_Interp *ip, const char *m);
129 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
130 void objfreeir(Tcl_Obj *o);
131 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
133 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
134 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
135 int l, const char *prefix);
144 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
150 extern Tcl_ObjType enum_nearlytype;
151 extern Tcl_ObjType enum1_nearlytype;
153 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
154 const void *firstentry, size_t entrysize,
156 #define enum_lookup_cached(ip,o,table,what) \
157 (enum_lookup_cached_func((ip),(o), \
158 &(table)[0],sizeof((table)[0]), \
160 /* table should be a pointer to an array of structs of size
161 * entrysize, the first member of which should be a const char*.
162 * The table should finish with a null const char *.
163 * On error, 0 is returned and the ip->result will have been
164 * set to the error message.
167 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
168 const char *opts, const char *what);
173 void memxor(Byte *dest, const Byte *src, int l);
177 int pad, use_algname;
180 extern Tcl_ObjType blockcipherkey_type;
182 /* from algtables.c */
186 int hashsize, blocksize, statesize;
187 void (*init)(void *state);
188 void (*update)(void *state, const Byte *data, int len);
189 void (*final)(void *state, Byte *digest);
190 void (*oneshot)(Byte *digest, const Byte *data, int len);
193 extern const HashAlgInfo hashalginfos[];
196 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
197 void (*crypt)(const void *schedule, const void *in, void *out);
198 /* in and out may be the same, but if they aren't they may not overlap */
199 /* in and out for crypt will have been through block_byteswap */
200 } BlockCipherDirectionInfo;
204 int blocksize, schedule_size, key_min, key_max;
205 void (*byteswap)(Byte *block);
206 BlockCipherDirectionInfo encrypt, decrypt;
207 } BlockCipherAlgInfo;
209 extern const BlockCipherAlgInfo blockcipheralginfos[];
215 int iv_blocks, buf_blocks;
216 const char *(*encrypt)(Byte *data, int blocks,
217 const Byte *iv, Byte *buf,
218 const BlockCipherAlgInfo *alg, int encr,
219 int blocksize, const void *sch);
220 const char *(*decrypt)(Byte *data, int blocks,
221 const Byte *iv, Byte *buf,
222 const BlockCipherAlgInfo *alg, int encr,
223 int blocksize, const void *sch);
224 /* in each case, *iv is provided, but may be modified */
225 } BlockCipherModeInfo;
227 extern const BlockCipherModeInfo blockciphermodeinfos[];
231 int setnonblock(int fd, int isnonblock);
235 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
236 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
238 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
239 #define TFREE(f) (Tcl_Free((void*)(f)))