/[pkg-mixmaster]/trunk/Mix/Src/mix3.h
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Contents of /trunk/Mix/Src/mix3.h

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Revision 510 - (show annotations) (download)
Mon May 5 11:03:41 2003 UTC (10 years ago) by weaselp
File MIME type: text/plain
File size: 13047 byte(s)
Respect DISTANCE setting also when selecting the final hop.  This is
important in cases where the user chooses a chain like '*,*,valiant,*'.
Previously it was possible that valiant was taken as a last hop resulting
in a chain like '....,valiant,valiant'.
1 /* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
2
3 Mixmaster may be redistributed and modified under certain conditions.
4 This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
5 ANY KIND, either express or implied. See the file COPYRIGHT for
6 details.
7
8 Function prototypes
9 $Id: mix3.h,v 1.23 2003/05/05 11:03:41 weaselp Exp $ */
10
11
12 #ifndef _MIX3_H
13 #define _MIX3_H
14 #define COPYRIGHT "Copyright Anonymizer Inc."
15
16 #include "config.h"
17 #include "mix.h"
18
19 #ifdef WIN32
20 #ifndef USE_SOCK
21 #define _WINSOCKAPI_ /* don't include winsock */
22 #endif /* not USE_SOCK */
23 #include <windows.h>
24 #ifdef _MSC
25 #define snprintf _snprintf
26 #endif /* _MSC */
27 #define DIRSEP '\\'
28 #define DIRSEPSTR "\\"
29 #else /* end of WIN32 */
30 #define DIRSEP '/'
31 #define DIRSEPSTR "/"
32 #endif /* else if not WIN32 */
33
34 #define NOT_IMPLEMENTED {printf("Function not implemented.\n");return -1;}
35 #define SECONDSPERDAY 86400
36
37 #include <time.h>
38
39 /* Dynamically allocated buffers */
40
41 int buf_reset(BUFFER *buffer);
42 int buf_clear(BUFFER *buffer);
43 int buf_append(BUFFER *buffer, byte *mess, int len);
44 int buf_cat(BUFFER *to, BUFFER *from);
45 int buf_set(BUFFER *to, BUFFER *from);
46 int buf_rest(BUFFER *to, BUFFER *from);
47 int buf_appendrnd(BUFFER *to, int n);
48 int buf_appendzero(BUFFER *to, int n);
49 int buf_setc(BUFFER *buf, byte c);
50 int buf_appendc(BUFFER *to, byte b);
51 int buf_setrnd(BUFFER *b, int n);
52 int buf_setf(BUFFER *buffer, char *fmt, ...);
53 int buf_appendf(BUFFER *buffer, char *fmt, ...);
54 int buf_sets(BUFFER *buf, char *s);
55 int buf_appends(BUFFER *buffer, char *s);
56 int buf_nl(BUFFER *buffer);
57 int buf_pad(BUFFER *buffer, int size);
58 int buf_prepare(BUFFER *buffer, int size);
59 int buf_rewind(BUFFER *buffer);
60 int buf_getc(BUFFER *buffer);
61 void buf_ungetc(BUFFER *buffer);
62 int buf_get(BUFFER *buffer, BUFFER *to, int n);
63 int buf_getline(BUFFER *buffer, BUFFER *line);
64 int buf_chop(BUFFER *b);
65 void buf_move(BUFFER *dest, BUFFER *src);
66 byte *buf_data(BUFFER *buffer);
67 int buf_isheader(BUFFER *buffer);
68 int buf_getheader(BUFFER *buffer, BUFFER *field, BUFFER *content);
69 int buf_appendheader(BUFFER *buffer, BUFFER *field, BUFFER *contents);
70 int buf_lookahead(BUFFER *buffer, BUFFER *line);
71 int buf_eq(BUFFER *b1, BUFFER *b2);
72 int buf_ieq(BUFFER *b1, BUFFER *b2);
73 void buf_cut_out(BUFFER *buffer, BUFFER *cut_out, BUFFER *rest,
74 int from, int len);
75
76 int buf_appendl(BUFFER *b, long l);
77 int buf_appendl_lo(BUFFER *b, long l);
78 long buf_getl(BUFFER *b);
79 long buf_getl_lo(BUFFER *b);
80 int buf_appendi(BUFFER *b, int i);
81 int buf_appendi_lo(BUFFER *b, int i);
82 int buf_geti(BUFFER *b);
83 int buf_geti_lo(BUFFER *b);
84
85 /* String comparison */
86 int strieq(const char *s1, const char *s2);
87 int strileft(const char *string, const char *keyword);
88 int striright(const char *string, const char *keyword);
89 int strifind(const char *string, const char *keyword);
90
91 int streq(const char *s1, const char *s2);
92 int strfind(const char *string, const char *keyword);
93 int strleft(const char *string, const char *keyword);
94
95 void strcatn(char *dest, const char *src, int n);
96
97 int bufleft(BUFFER *b, char *k);
98 int buffind(BUFFER *b, char *k);
99 int bufeq(BUFFER *b, char *k);
100
101 int bufileft(BUFFER *b, char *k);
102 int bufifind(BUFFER *b, char *k);
103 int bufiright(BUFFER *b, char *k);
104 int bufieq(BUFFER *b, char *k);
105
106 /* Utility functions */
107 void whoami(char *addr, char *defaultname);
108 int sendinfofile(char *name, char *log, BUFFER *address, BUFFER *subject);
109 int stats(BUFFER *out);
110 int conf(BUFFER *out);
111 void conf_premail(BUFFER *out);
112
113 void rfc822_addr(BUFFER *line, BUFFER *list);
114 void rfc822_name(BUFFER *line, BUFFER *name);
115 void sendmail_begin(void); /* begin mail sending session */
116 void sendmail_end(void); /* end mail sending session */
117 int sendmail_loop(BUFFER *message, char *from, BUFFER *address);
118 int sendmail(BUFFER *message, char *from, BUFFER *address);
119 int mixfile(char *path, const char *name);
120 int file_to_out(const char *name);
121 FILE *mix_openfile(const char *name, const char *a);
122 FILE *openpipe(const char *prog);
123 int closepipe(FILE *fp);
124 int maildirWrite(char *maildir, BUFFER *message, int create);
125 int write_pidfile(char *pidfile);
126 int clear_pidfile(char *pidfile);
127 time_t parse_yearmonthday(char* str);
128
129
130 typedef struct {
131 char *name;
132 FILE *f;
133 } LOCK;
134
135 int lock(FILE *f);
136 int unlock(FILE *f);
137 LOCK *lockfile(char *filename);
138 int unlockfile(LOCK *lock);
139
140 int filtermsg(BUFFER *msg);
141 BUFFER *readdestblk( );
142 int doblock(BUFFER *line, BUFFER *filter, int logandreset);
143 int doallow(BUFFER *line, BUFFER *filter);
144 int allowmessage(BUFFER *in);
145
146 void errlog(int type, char *format,...);
147 void clienterr(BUFFER *msgbuf, char *err);
148 void logmail(char *mailbox, BUFFER *message);
149
150 void mix_status(char *fmt,...);
151 void mix_genericerror(void);
152
153 #define ERRORMSG 1
154 #define WARNING 2
155 #define NOTICE 3
156 #define LOG 4
157 #define DEBUGINFO 5
158
159 int decode(BUFFER *in, BUFFER *out);
160 int encode(BUFFER *b, int linelen);
161 void id_encode(byte id[], byte *s);
162 void id_decode(byte *s, byte id[]);
163
164 int decode_header(BUFFER *content);
165 int boundary(BUFFER *line, BUFFER *mboundary);
166 void get_parameter(BUFFER *content, char *attribute, BUFFER *value);
167 int get_type(BUFFER *content, BUFFER *type, BUFFER *subtype);
168 int mail_encode(BUFFER *in, int encoding);
169 int hdr_encode(BUFFER *in, int n);
170 int attachfile(BUFFER *message, BUFFER *filename);
171 int pgpmime_sign(BUFFER *message, BUFFER *uid, BUFFER *pass, char *secring);
172 int mime_attach(BUFFER *message, BUFFER *attachment, BUFFER *type);
173 void mimedecode(BUFFER *msg);
174 int qp_decode_message(BUFFER *msg);
175
176 #define MIME_8BIT 1 /* transport is 8bit */
177 #define MIME_7BIT 2 /* transport is 7bit */
178
179 /* randomness */
180 int rnd_bytes(byte *b, int n);
181 byte rnd_byte(void);
182 int rnd_number(int n);
183 int rnd_add(byte *b, int l);
184 int rnd_seed(void);
185 void rnd_time(void);
186
187 int rnd_init(void);
188 int rnd_final(void);
189 void rnd_error(void);
190
191 #define RND_QUERY 0
192 #define RND_NOTSEEDED -1
193 #define RND_SEEDED 1
194 #define RND_WILLSEED 2
195 extern int rnd_state; /* flag for PRNG status */
196
197 /* compression */
198 int buf_compress(BUFFER *b);
199 int buf_zip(BUFFER *out, BUFFER *in, int bits);
200 int buf_uncompress(BUFFER *b);
201 int buf_unzip(BUFFER *b, int type);
202
203 /* crypto functions */
204 int digest_md5(BUFFER *b, BUFFER *md);
205 int isdigest_md5(BUFFER *b, BUFFER *md);
206 int digestmem_md5(byte *b, int n, BUFFER *md);
207 int digest_sha1(BUFFER *b, BUFFER *md);
208 int digest_rmd160(BUFFER *b, BUFFER *md);
209
210 int keymgt(int force);
211 int key(BUFFER *b);
212 int adminkey(BUFFER *b);
213
214 #define ENCRYPT 1
215 #define DECRYPT 0
216 int buf_crypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
217
218 #ifdef USE_IDEA
219 int buf_ideacrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
220 #endif /* USE_IDEA */
221 int buf_bfcrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
222 int buf_3descrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
223 int buf_castcrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
224 #ifdef USE_AES
225 int buf_aescrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
226 #endif /* USE_AES */
227
228 int db_getseckey(byte keyid[], BUFFER *key);
229 int db_getpubkey(byte keyid[], BUFFER *key);
230 int pk_decrypt(BUFFER *encrypted, BUFFER *privkey);
231 int pk_encrypt(BUFFER *plaintext, BUFFER *privkey);
232 int check_seckey(BUFFER *buf, const byte id[]);
233 int check_pubkey(BUFFER *buf, const byte id[]);
234 int v2createkey(void);
235 int getv2seckey(byte keyid[], BUFFER *key);
236 int seckeytopub(BUFFER *pub, BUFFER *sec, byte keyid[]);
237
238 /* configuration, general remailer functions */
239 int mix_configline(char *line);
240 int mix_config(void);
241 int mix_initialized(void);
242 int mix_daily(void);
243
244 /* message pool */
245 #define INTERMEDIATE 0
246 int pool_send(void);
247 int pool_read(BUFFER *pool);
248 int pool_add(BUFFER *msg, char *type);
249 FILE *pool_new(char *type, char *tmpname, char *path);
250 int mix_pool(BUFFER *msg, int type, long latent);
251 int pool_packetfile(char *fname, BUFFER *mid, int packetnum);
252 void pool_packetexp(void);
253 int idexp(void);
254 int pgpmaxexp(void);
255 void pop3get(void);
256
257 typedef struct { /* added for binary id.log change */
258 char id[16];
259 long time;
260 } idlog_t;
261
262 /* statistics */
263 int stats_log(int);
264 int stats_out(int);
265
266 /* OpenPGP */
267 #define PGP_ARMOR_NORMAL 0
268 #define PGP_ARMOR_REM 1
269 #define PGP_ARMOR_KEY 2
270 #define PGP_ARMOR_NYMKEY 3
271 #define PGP_ARMOR_NYMSIG 4
272 #define PGP_ARMOR_SECKEY 5
273
274 #define PGP_TYPE_UNDEFINED 0
275 #define PGP_TYPE_PRIVATE 1
276 #define PGP_TYPE_PUBLIC 2
277
278 int pgp_keymgt(int force);
279 int pgp_latestkeys(BUFFER* outtxt, int algo);
280 int pgp_armor(BUFFER *buf, int mode);
281 int pgp_dearmor(BUFFER *buf, BUFFER *out);
282 int pgp_pubkeycert(BUFFER *userid, char *keyring, BUFFER *pass,
283 BUFFER *out, int remail);
284 int pgp_signtxt(BUFFER *msg, BUFFER *uid, BUFFER *pass,
285 char *secring, int remail);
286 int pgp_isconventional(BUFFER *buf);
287 int pgp_mailenc(int mode, BUFFER *msg, char *sigid,
288 BUFFER *pass, char *pubring, char *secring);
289 int pgp_signhashalgo(BUFFER *algo, BUFFER *userid, char *secring,
290 BUFFER *pass);
291
292 /* menu */
293 int menu_initialized;
294 void menu_main(void);
295 void menu_folder(char command, char *name);
296 int menu_getuserpass(BUFFER *p, int mode);
297
298 int user_pass(BUFFER *b);
299 int user_confirmpass(BUFFER *b);
300 void user_delpass(void);
301
302 /* remailer */
303 typedef struct {
304 char name[20];
305 int version;
306 char addr[128];
307 byte keyid[16];
308 struct {
309 unsigned int mix:1;
310 unsigned int compress:1;
311
312 unsigned int cpunk:1;
313 unsigned int pgp:1;
314 unsigned int pgponly:1;
315 unsigned int latent:1;
316 unsigned int hash:1;
317 unsigned int ek:1;
318 unsigned int esub:1;
319
320 unsigned int nym:1;
321 unsigned int newnym:1;
322
323 unsigned int post:1;
324 unsigned int middle:1;
325
326 unsigned int star_ex:1;
327 } flags;
328 struct rinfo {
329 int reliability;
330 int latency;
331 char history[13];
332 } info[2];
333 } REMAILER;
334
335 #define CHAINMAX 421
336 #define MAXREM 100
337 int prepare_type2list(BUFFER *out);
338 int mix2_rlist(REMAILER remailer[], int badchains[MAXREM][MAXREM]);
339 int t1_rlist(REMAILER remailer[], int badchains[MAXREM][MAXREM]);
340 int pgp_rlist(REMAILER remailer[], int n);
341 int pgp_rkeylist(REMAILER remailer[], int keyid[], int n);
342 void parse_badchains(int badchains[MAXREM][MAXREM], char *file, char *startindicator, REMAILER *remailer, int maxrem);
343 int chain_select(int hop[], char *chainstr, int maxrem, REMAILER *remailer,
344 int type, BUFFER *feedback);
345 int chain_rand(REMAILER *remailer, int badchains[MAXREM][MAXREM], int maxrem,
346 int thischain[], int chainlen, int t);
347 int chain_randfinal(int type, REMAILER *remailer, int badchains[MAXREM][MAXREM], int maxrem, int rtype, int chain[], int chainlen);
348
349 float chain_reliability(char *chain, int chaintype,
350 char *reliability_string);
351 int mix2_encrypt(int type, BUFFER *message, char *chainstr, int numcopies,
352 BUFFER *feedback);
353 int t1_encrypt(int type, BUFFER *message, char *chainstr, int latency,
354 BUFFER *ek, BUFFER *feedback);
355
356 int t1_getreply(BUFFER *msg, BUFFER *ek, int len);
357
358 int t1_decrypt(BUFFER *in);
359 int t2_decrypt(BUFFER *in);
360
361 int mix2_decrypt(BUFFER *m);
362 int mix3_decrypt(BUFFER *m);
363
364 /* type 2 */
365 #define MAGIC0 0
366 #define MAGIC1 3
367
368 int v3_magic(byte *b);
369 int v2body(BUFFER *body);
370 int v2body_setlen(BUFFER *body);
371 int v2partial(BUFFER *body, BUFFER *mid, int packet, int numpackets);
372 int v2_merge(BUFFER *mid);
373 int mix_armor(BUFFER *in);
374 int mix_dearmor(BUFFER *armored, BUFFER *bin);
375
376 /* type 1 */
377 #define HDRMARK "::"
378 #define EKMARK "**"
379 #define HASHMARK "##"
380 int isline(BUFFER *line, char *text);
381
382 /* nym database */
383
384 #define NYM_WAITING 0
385 #define NYM_OK 1
386 #define NYM_DELETED 2
387 #define NYM_ANY -1
388
389 int nymlist_read(BUFFER *n);
390 int nymlist_write(BUFFER *list);
391 int nymlist_get(BUFFER *list, char *nym, BUFFER *config, BUFFER *ek,
392 BUFFER *options, BUFFER *name, BUFFER *rblocks, int *status);
393 int nymlist_append(BUFFER *list, char *nym, BUFFER *config, BUFFER *options,
394 BUFFER *name, BUFFER *chains, BUFFER *eklist, int status);
395 int nymlist_del(BUFFER *list, char *nym);
396 int nymlist_getnym(char *nym, BUFFER *config, BUFFER *ek, BUFFER *opt,
397 BUFFER *name, BUFFER *rblocks);
398 int nymlist_getstatus(char *nym);
399
400 /* Visual C lacks dirent */
401 #ifdef _MSC
402 typedef HANDLE DIR;
403
404 struct dirent {
405 char d_name[PATHMAX];
406 };
407
408 DIR *opendir(const char *name);
409 struct dirent *readdir(DIR *dir);
410 int closedir(DIR *dir);
411 #endif /* _MSC */
412
413 /* sockets */
414 #if defined(WIN32) && defined(USE_SOCK)
415 #include <winsock.h>
416 int sock_init(void);
417 void sock_exit(void);
418
419 #else /* end of defined(WIN32) && defined(USE_SOCK) */
420 typedef int SOCKET;
421
422 #define INVALID_SOCKET -1
423 SOCKET opensocket(char *hostname, int port);
424 int closesocket(SOCKET s);
425
426 #endif /* else if not defined(WIN32) && defined(USE_SOCK) */
427
428 #ifdef WIN32
429 int is_nt_service(void);
430 void set_nt_exit_event();
431 #endif /* WIN32 */
432
433 /* check for memory leaks */
434 #ifdef DEBUG
435 #define malloc mix3_malloc
436 #define free mix3_free
437 BUFFER *mix3_bufnew(char *, int, char*);
438 #if __GNUC__ >= 2
439 # define buf_new() mix3_bufnew(__FILE__, __LINE__, __PRETTY_FUNCTION__)
440 #else /* end of __GNUC__ >= 2 */
441 # define buf_new() mix3_bufnew(__FILE__, __LINE__, "file")
442 #endif /* else if not __GNUC__ >= 2 */
443 #endif /* DEBUG */
444
445 #endif /* not _MIX3_H */

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