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>
37 #include <arpa/inet.h>
41 typedef unsigned char Byte;
45 int Hbytes_Init(Tcl_Interp *ip); /* called by Tcl's "load" */
47 /* Internal representation details: */
48 #define HBYTES_ISEMPTY(hb) (!(hb)->begin_complex && !(hb)->end_0)
49 #define HBYTES_ISSENTINEL(hb) (!(hb)->begin_complex && (hb)->end_0)
50 #define HBYTES_ISSIMPLE(hb) ((hb)->begin_complex && (hb)->end_0)
51 #define HBYTES_ISCOMPLEX(hb) ((hb)->begin_complex && !(hb)->end_0)
54 void *begin_complex, *end_0;
55 } HBytes_Value; /* overlays internalRep */
58 Byte *dstart; /* always allocated dynamically */
59 int prespace, len, avail;
61 * | SPARE | USED | SPARE |
62 * |<-prespace->|<-len->| |
66 } HBytes_ComplexValue; /* pointed to from internalRep.otherValuePtr */
68 /* Public interfaces: */
70 extern Tcl_ObjType hbytes_type;
72 int hbytes_len(const HBytes_Value *v);
73 Byte *hbytes_data(const HBytes_Value *v); /* caller may then modify data! */
74 int hbytes_issentinel(const HBytes_Value *v);
76 Byte *hbytes_prepend(HBytes_Value *upd, int el);
77 Byte *hbytes_append(HBytes_Value *upd, int el);
78 /* return value is where to put the data */
80 const Byte *hbytes_unprepend(HBytes_Value *upd, int rl);
81 const Byte *hbytes_unappend(HBytes_Value *upd, int rl);
82 /* return value points to the removed data, which remains valid
83 * until next op on the HBytes_Value. If original value is
84 * shorter than rl or negative, returns 0 and does nothing. */
86 void hbytes_empty(HBytes_Value *returns);
87 void hbytes_sentinel(HBytes_Value *returns);
88 void hbytes_array(HBytes_Value *returns, const Byte *array, int l);
89 Byte *hbytes_arrayspace(HBytes_Value *returns, int l);
90 void hbytes_free(const HBytes_Value *frees);
91 /* _empty, _sentinel and _array do not free or read the old value;
92 * _free it first if needed. _free leaves it garbage, so you
93 * have to call _empty to reuse it. _arrayspace doesn't fill
94 * the array; you get a pointer and must fill it with data
97 /* The value made by hbytes_sentinel should not be passed to
98 * anything except HBYTES_IS..., and hbytes_free. */
100 /* from sockaddr.c */
106 extern Tcl_ObjType sockaddr_type;
108 void sockaddr_clear(SockAddr_Value*);
109 void sockaddr_create(SockAddr_Value*, const struct sockaddr *addr, int len);
110 int sockaddr_len(const SockAddr_Value*);
111 const struct sockaddr *sockaddr_addr(const SockAddr_Value*);
112 void sockaddr_free(const SockAddr_Value*);
116 extern Tcl_ObjType sockid_type;
117 typedef struct DgramSocket *DgramSockID;
121 int staticerr(Tcl_Interp *ip, const char *m);
122 int posixerr(Tcl_Interp *ip, int errnoval, const char *m);
123 void objfreeir(Tcl_Obj *o);
124 int get_urandom(Tcl_Interp *ip, Byte *buffer, int l);
126 void obj_updatestr_array(Tcl_Obj *o, const Byte *array, int l);
127 void obj_updatestr_array_prefix(Tcl_Obj *o, const Byte *byte,
128 int l, const char *prefix);
137 void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg);
143 extern Tcl_ObjType enum_nearlytype;
144 extern Tcl_ObjType enum1_nearlytype;
146 const void *enum_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
147 const void *firstentry, size_t entrysize,
149 #define enum_lookup_cached(ip,o,table,what) \
150 (enum_lookup_cached_func((ip),(o), \
151 &(table)[0],sizeof((table)[0]), \
153 /* table should be a pointer to an array of structs of size
154 * entrysize, the first member of which should be a const char*.
155 * The table should finish with a null const char *.
156 * On error, 0 is returned and the ip->result will have been
157 * set to the error message.
160 int enum1_lookup_cached_func(Tcl_Interp *ip, Tcl_Obj *o,
161 const char *opts, const char *what);
166 void memxor(Byte *dest, const Byte *src, int l);
170 int pad, use_algname;
173 extern Tcl_ObjType blockcipherkey_type;
175 /* from algtables.c */
179 int hashsize, blocksize, statesize;
180 void (*init)(void *state);
181 void (*update)(void *state, const Byte *data, int len);
182 void (*final)(void *state, Byte *digest);
183 void (*oneshot)(Byte *digest, const Byte *data, int len);
186 extern const HashAlgInfo hashalginfos[];
189 void (*make_schedule)(void *schedule, const Byte *key, int keylen);
190 void (*crypt)(const void *schedule, const void *in, void *out);
191 /* in and out may be the same, but if they aren't they may not overlap */
192 /* in and out for crypt will have been through block_byteswap */
193 } BlockCipherDirectionInfo;
197 int blocksize, schedule_size, key_min, key_max;
198 void (*byteswap)(Byte *block);
199 BlockCipherDirectionInfo encrypt, decrypt;
200 } BlockCipherAlgInfo;
202 extern const BlockCipherAlgInfo blockcipheralginfos[];
208 int iv_blocks, buf_blocks;
209 const char *(*encrypt)(Byte *data, int blocks,
210 const Byte *iv, Byte *buf,
211 const BlockCipherAlgInfo *alg, int encr,
212 int blocksize, const void *sch);
213 const char *(*decrypt)(Byte *data, int blocks,
214 const Byte *iv, Byte *buf,
215 const BlockCipherAlgInfo *alg, int encr,
216 int blocksize, const void *sch);
217 /* in each case, *iv is provided, but may be modified */
218 } BlockCipherModeInfo;
220 extern const BlockCipherModeInfo blockciphermodeinfos[];
224 int setnonblock(int fd, int isnonblock);
228 #define OBJ_HBYTES(o) ((HBytes_Value*)&(o)->internalRep.twoPtrValue)
229 #define OBJ_SOCKADDR(o) ((SockAddr_Value*)&(o)->internalRep.twoPtrValue)
231 #define TALLOC(s) ((void*)Tcl_Alloc((s)))
232 #define TFREE(f) (Tcl_Free((void*)(f)))