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)
19 * => -2 A is lexically earlier than B and not a prefix of B (A<B)
20 * -1 A is prefix of B but not equal (A<B)
22 * +1 A is B plus a nonempty suffix (ie, A has B as a prefix)
23 * +2 A is lexically later than B and does not have B as a prefix
25 * hbytes pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
26 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
27 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
29 * hbytes hash ALG MESSAGE => hash
30 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
43 #include <sys/socket.h>
46 #include <arpa/inet.h>
50 typedef unsigned char Byte;
54 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
56 /* Internal representation details: */
57 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
58 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
59 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
60 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
63 void *begin_complex, *end_0;
64 } HBytes_Value; /* overlays internalRep */
67 Byte *dstart; /* always allocated dynamically */
68 int prespace, len, avail;
70 * | SPARE | USED | SPARE |
71 * |<-prespace->|<-len->| |
75 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
77 /* Public interfaces: */
79 extern Tcl_ObjType hbytes_type;
81 int hbytes_len(const HBytes_Value *v);
82 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
83 int hbytes_issentinel(const HBytes_Value *v);
85 Byte *hbytes_prepend(HBytes_Value *upd, int el);
86 Byte *hbytes_append(HBytes_Value *upd, int el);
87 /* return value is where to put the data */
89 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
90 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
91 /* return value points to the removed data, which remains valid
92 * until next op on the HBytes_Value. If original value is
93 * shorter than rl or negative, returns 0 and does nothing. */
95 void hbytes_empty(HBytes_Value *returns);
96 void hbytes_sentinel(HBytes_Value *returns);
97 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
98 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
99 void hbytes_free(const HBytes_Value *frees);
100 /* _empty, _sentinel and _array do not free or read the old value;
101 * _free it first if needed. _free leaves it garbage, so you
102 * have to call _empty to reuse it. _arrayspace doesn't fill
103 * the array; you get a pointer and must fill it with data
106 /* The value made by hbytes_sentinel should not be passed to
107 * anything except HBYTES_IS..., and hbytes_free. */
109 /* from sockaddr.c */
115 extern Tcl_ObjType sockaddr_type;
117 void sockaddr_clear(SockAddr_Value*);
118 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
119 int sockaddr_len(const SockAddr_Value*);
120 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
121 void sockaddr_free(const SockAddr_Value*);
125 extern Tcl_ObjType sockid_type;
126 typedef struct DgramSocket *DgramSockID;
130 int staticerr(Tcl_Interp *ip, const char *m);
131 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
132 void objfreeir(Tcl_Obj *o);
133 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
135 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
136 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
137 int l, const char *prefix);
146 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
152 extern Tcl_ObjType enum_nearlytype;
153 extern Tcl_ObjType enum1_nearlytype;
155 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
156 const void *firstentry, size_t entrysize,
158 #define enum_lookup_cached(ip,o,table,what) \
159 (enum_lookup_cached_func((ip),(o), \
160 &(table)[0],sizeof((table)[0]), \
162 /* table should be a pointer to an array of structs of size
163 * entrysize, the first member of which should be a const char*.
164 * The table should finish with a null const char *.
165 * On error, 0 is returned and the ip->result will have been
166 * set to the error message.
169 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
170 const char *opts, const char *what);
175 void memxor(Byte *dest, const Byte *src, int l);
179 int pad, use_algname;
182 extern Tcl_ObjType blockcipherkey_type;
184 /* from algtables.c */
188 int hashsize, blocksize, statesize;
189 void (*init)(void *state);
190 void (*update)(void *state, const Byte *data, int len);
191 void (*final)(void *state, Byte *digest);
192 void (*oneshot)(Byte *digest, const Byte *data, int len);
195 extern const HashAlgInfo hashalginfos[];
198 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
199 void (*crypt)(const void *schedule, const void *in, void *out);
200 /* in and out may be the same, but if they aren't they may not overlap */
201 /* in and out for crypt will have been through block_byteswap */
202 } BlockCipherDirectionInfo;
206 int blocksize, schedule_size, key_min, key_max;
207 void (*byteswap)(Byte *block);
208 BlockCipherDirectionInfo encrypt, decrypt;
209 } BlockCipherAlgInfo;
211 extern const BlockCipherAlgInfo blockcipheralginfos[];
217 int iv_blocks, buf_blocks;
218 const char *(*encrypt)(Byte *data, int blocks,
219 const Byte *iv, Byte *buf,
220 const BlockCipherAlgInfo *alg, int encr,
221 int blocksize, const void *sch);
222 const char *(*decrypt)(Byte *data, int blocks,
223 const Byte *iv, Byte *buf,
224 const BlockCipherAlgInfo *alg, int encr,
225 int blocksize, const void *sch);
226 /* in each case, *iv is provided, but may be modified */
227 } BlockCipherModeInfo;
229 extern const BlockCipherModeInfo blockciphermodeinfos[];
233 int setnonblock(int fd, int isnonblock);
237 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
238 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
240 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
241 #define TFREE(f) (Tcl_Free((void*)(f)))