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 pkcs5 pa|ua VAR ALG => worked? (always 1 for p)
17 * hbytes pkcs5 pn|un VAR BLOCKSIZE => worked? (always 1 for p)
18 * hbytes blockcipher d|e VAR ALG KEY MODE [IV] => IV
20 * hbytes hash ALG MESSAGE => hash
21 * hbytes hmac ALG MESSAGE KEY [MACLENGTH] => mac
34 #include <sys/socket.h>
36 #include <arpa/inet.h>
40 typedef unsigned char Byte;
44 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
46 /* Internal representation details: */
47 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
48 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
49 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
50 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
53 void *begin_complex, *end_0;
54 } HBytes_Value; /* overlays internalRep */
57 Byte *dstart; /* always allocated dynamically */
58 int prespace, len, avail;
60 * | SPARE | USED | SPARE |
61 * |<-prespace->|<-len->| |
65 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
67 /* Public interfaces: */
69 extern Tcl_ObjType hbytes_type;
71 int hbytes_len(const HBytes_Value *v);
72 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
73 int hbytes_issentinel(const HBytes_Value *v);
75 Byte *hbytes_prepend(HBytes_Value *upd, int el);
76 Byte *hbytes_append(HBytes_Value *upd, int el);
77 /* return value is where to put the data */
79 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
80 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
81 /* return value points to the removed data, which remains valid
82 * until next op on the HBytes_Value. If original value is
83 * shorter than rl or negative, returns 0 and does nothing. */
85 void hbytes_empty(HBytes_Value *returns);
86 void hbytes_sentinel(HBytes_Value *returns);
87 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
88 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
89 void hbytes_free(const HBytes_Value *frees);
90 /* _empty, _sentinel and _array do not free or read the old value;
91 * _free it first if needed. _free leaves it garbage, so you
92 * have to call _empty to reuse it. _arrayspace doesn't fill
93 * the array; you get a pointer and must fill it with data
96 /* The value made by hbytes_sentinel should not be passed to
97 * anything except HBYTES_IS..., and hbytes_free. */
105 extern Tcl_ObjType sockaddr_type;
107 void sockaddr_clear(SockAddr_Value*);
108 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
109 int sockaddr_len(const SockAddr_Value*);
110 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
111 void sockaddr_free(const SockAddr_Value*);
115 extern Tcl_ObjType sockid_type;
119 int staticerr(Tcl_Interp *ip, const char *m);
120 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
121 void objfreeir(Tcl_Obj *o);
122 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
124 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
125 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
126 int l, const char *prefix);
135 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
141 extern Tcl_ObjType enum_nearlytype;
142 extern Tcl_ObjType enum1_nearlytype;
144 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
145 const void *firstentry, size_t entrysize,
147 #define enum_lookup_cached(ip,o,table,what) \
148 (enum_lookup_cached_func((ip),(o), \
149 &(table)[0],sizeof((table)[0]), \
151 /* table should be a pointer to an array of structs of size
152 * entrysize, the first member of which should be a const char*.
153 * The table should finish with a null const char *.
154 * On error, 0 is returned and the ip->result will have been
155 * set to the error message.
158 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
159 const char *opts, const char *what);
164 void memxor(Byte *dest, const Byte *src, int l);
168 int pad, use_algname;
171 Tcl_ObjType blockcipherkey_type;
173 /* from algtables.c */
177 int hashsize, blocksize, statesize;
178 void (*init)(void *state);
179 void (*update)(void *state, const Byte *data, int len);
180 void (*final)(void *state, Byte *digest);
181 void (*oneshot)(Byte *digest, const Byte *data, int len);
184 extern const HashAlgInfo hashalginfos[];
187 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
188 void (*crypt)(const void *schedule, const void *in, void *out);
189 /* in and out may be the same, but if they aren't they may not overlap */
190 /* in and out for crypt will have been through block_byteswap */
191 } BlockCipherDirectionInfo;
195 int blocksize, schedule_size, key_min, key_max;
196 void (*byteswap)(Byte *block);
197 BlockCipherDirectionInfo encrypt, decrypt;
198 } BlockCipherAlgInfo;
200 extern const BlockCipherAlgInfo blockcipheralginfos[];
206 int iv_blocks, buf_blocks;
207 const char *(*encrypt)(Byte *data, int blocks,
208 const Byte *iv, Byte *buf,
209 const BlockCipherAlgInfo *alg, int encr,
210 int blocksize, const void *sch);
211 const char *(*decrypt)(Byte *data, int blocks,
212 const Byte *iv, Byte *buf,
213 const BlockCipherAlgInfo *alg, int encr,
214 int blocksize, const void *sch);
215 /* in each case, *iv is provided, but may be modified */
216 } BlockCipherModeInfo;
218 extern const BlockCipherModeInfo blockciphermodeinfos[];
222 int setnonblock(int fd, int isnonblock);
226 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
227 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
229 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
230 #define TFREE(f) (Tcl_Free((void*)(f)))