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/* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
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Mixmaster may be redistributed and modified under certain conditions.
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This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
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ANY KIND, either express or implied. See the file COPYRIGHT for
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details.
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Function prototypes
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$Id: mix3.h,v 1.2 2001/11/06 23:41:58 rabbi Exp $ */
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#ifndef _MIX3_H
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#define _MIX3_H
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#define COPYRIGHT "Copyright Anonymizer Inc."
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#include "config.h"
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#include "mix.h"
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#ifdef WIN32
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#ifndef USE_SOCK
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#define _WINSOCKAPI_ /* don't include winsock */
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#endif
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#include <windows.h>
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#ifdef _MSC
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#define snprintf _snprintf
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#endif
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#define DIRSEP '\\'
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#define DIRSEPSTR "\\"
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#else
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#define DIRSEP '/'
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#define DIRSEPSTR "/"
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#endif
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#define NOT_IMPLEMENTED {printf("Function not implemented.\n");return -1;}
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#define SECONDSPERDAY 86400
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/* Dynamically allocated buffers */
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int buf_reset(BUFFER *buffer);
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int buf_clear(BUFFER *buffer);
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int buf_append(BUFFER *buffer, byte *mess, int len);
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int buf_cat(BUFFER *to, BUFFER *from);
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int buf_set(BUFFER *to, BUFFER *from);
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int buf_rest(BUFFER *to, BUFFER *from);
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int buf_appendrnd(BUFFER *to, int n);
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int buf_appendzero(BUFFER *to, int n);
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int buf_setc(BUFFER *buf, byte c);
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int buf_appendc(BUFFER *to, byte b);
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int buf_setrnd(BUFFER *b, int n);
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int buf_setf(BUFFER *buffer, char *fmt, ...);
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int buf_appendf(BUFFER *buffer, char *fmt, ...);
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int buf_sets(BUFFER *buf, char *s);
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int buf_appends(BUFFER *buffer, char *s);
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int buf_nl(BUFFER *buffer);
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int buf_pad(BUFFER *buffer, int size);
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int buf_prepare(BUFFER *buffer, int size);
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int buf_rewind(BUFFER *buffer);
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int buf_getc(BUFFER *buffer);
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void buf_ungetc(BUFFER *buffer);
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int buf_get(BUFFER *buffer, BUFFER *to, int n);
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int buf_getline(BUFFER *buffer, BUFFER *line);
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int buf_chop(BUFFER *b);
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void buf_move(BUFFER *dest, BUFFER *src);
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byte *buf_data(BUFFER *buffer);
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int buf_getheader(BUFFER *buffer, BUFFER *field, BUFFER *content);
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int buf_appendheader(BUFFER *buffer, BUFFER *field, BUFFER *contents);
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int buf_lookahead(BUFFER *buffer, BUFFER *line);
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int buf_eq(BUFFER *b1, BUFFER *b2);
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int buf_ieq(BUFFER *b1, BUFFER *b2);
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void buf_cut_out(BUFFER *buffer, BUFFER *cut_out, BUFFER *rest,
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int from, int len);
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int buf_appendl(BUFFER *b, long l);
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int buf_appendl_lo(BUFFER *b, long l);
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long buf_getl(BUFFER *b);
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long buf_getl_lo(BUFFER *b);
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int buf_appendi(BUFFER *b, int i);
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int buf_appendi_lo(BUFFER *b, int i);
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int buf_geti(BUFFER *b);
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int buf_geti_lo(BUFFER *b);
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/* String comparison */
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int strieq(const char *s1, const char *s2);
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int strileft(const char *string, const char *keyword);
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int striright(const char *string, const char *keyword);
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int strifind(const char *string, const char *keyword);
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int streq(const char *s1, const char *s2);
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int strfind(const char *string, const char *keyword);
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int strleft(const char *string, const char *keyword);
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void strcatn(char *dest, const char *src, int n);
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int bufleft(BUFFER *b, char *k);
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int buffind(BUFFER *b, char *k);
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int bufeq(BUFFER *b, char *k);
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int bufileft(BUFFER *b, char *k);
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int bufifind(BUFFER *b, char *k);
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int bufiright(BUFFER *b, char *k);
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int bufieq(BUFFER *b, char *k);
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/* Utility functions */
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void whoami(char *addr, char *defaultname);
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int sendinfofile(char *name, char *log, BUFFER *address, BUFFER *subject);
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int stats(BUFFER *out);
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int conf(BUFFER *out);
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void conf_premail(BUFFER *out);
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void rfc822_addr(BUFFER *line, BUFFER *list);
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void rfc822_name(BUFFER *line, BUFFER *name);
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void sendmail_begin(void); /* begin mail sending session */
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void sendmail_end(void); /* end mail sending session */
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int sendmail(BUFFER *message, char *from, BUFFER *address);
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int mixfile(char *path, const char *name);
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int file_to_out(const char *name);
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FILE *mix_openfile(const char *name, const char *a);
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FILE *openpipe(const char *prog);
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int closepipe(FILE *fp);
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typedef struct {
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char *name;
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FILE *f;
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} LOCK;
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int lock(FILE *f);
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int unlock(FILE *f);
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LOCK *lockfile(char *filename);
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int unlockfile(LOCK *lock);
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int filtermsg(BUFFER *msg);
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BUFFER *readdestblk( );
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int doblock(BUFFER *line, BUFFER *filter, int logandreset);
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int doallow(BUFFER *line, BUFFER *filter);
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int allowmessage(BUFFER *in);
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void errlog(int type, char *format,...);
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void clienterr(BUFFER *msgbuf, char *err);
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void logmail(char *mailbox, BUFFER *message);
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void mix_status(char *fmt,...);
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void mix_genericerror(void);
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#define ERRORMSG 1
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#define WARNING 2
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#define NOTICE 3
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#define LOG 4
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#define DEBUGINFO 5
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int decode(BUFFER *in, BUFFER *out);
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int encode(BUFFER *b, int linelen);
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void id_encode(byte id[], byte *s);
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void id_decode(byte *s, byte id[]);
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int decode_header(BUFFER *content);
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int boundary(BUFFER *line, BUFFER *mboundary);
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void get_parameter(BUFFER *content, char *attribute, BUFFER *value);
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int get_type(BUFFER *content, BUFFER *type, BUFFER *subtype);
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int mail_encode(BUFFER *in, int encoding);
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int hdr_encode(BUFFER *in, int n);
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int attachfile(BUFFER *message, BUFFER *filename);
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int pgpmime_sign(BUFFER *message, BUFFER *uid, BUFFER *pass, char *secring);
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int mime_attach(BUFFER *message, BUFFER *attachment, BUFFER *type);
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void mimedecode(BUFFER *msg);
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#define MIME_8BIT 1 /* transport is 8bit */
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#define MIME_7BIT 2 /* transport is 7bit */
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/* randomness */
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int rnd_bytes(byte *b, int n);
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byte rnd_byte(void);
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int rnd_number(int n);
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int rnd_add(byte *b, int l);
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int rnd_seed(void);
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void rnd_time(void);
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int rnd_init(void);
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int rnd_final(void);
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void rnd_error(void);
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#define RND_QUERY 0
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#define RND_NOTSEEDED -1
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#define RND_SEEDED 1
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#define RND_WILLSEED 2
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extern int rnd_state; /* flag for PRNG status */
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/* compression */
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int buf_compress(BUFFER *b);
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int buf_zip(BUFFER *out, BUFFER *in, int bits);
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int buf_uncompress(BUFFER *b);
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int buf_unzip(BUFFER *b, int type);
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/* crypto functions */
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int digest_md5(BUFFER *b, BUFFER *md);
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int isdigest_md5(BUFFER *b, BUFFER *md);
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int digestmem_md5(byte *b, int n, BUFFER *md);
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int digest_sha1(BUFFER *b, BUFFER *md);
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int digest_rmd160(BUFFER *b, BUFFER *md);
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int keymgt(int force);
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int key(BUFFER *b);
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int adminkey(BUFFER *b);
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#define ENCRYPT 1
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#define DECRYPT 0
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int buf_crypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
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#ifdef USE_IDEA
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int buf_ideacrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
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#endif
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int buf_bfcrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
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int buf_3descrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
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int buf_castcrypt(BUFFER *b, BUFFER *key, BUFFER *iv, int enc);
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int db_getseckey(byte keyid[], BUFFER *key);
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int db_getpubkey(byte keyid[], BUFFER *key);
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int pk_decrypt(BUFFER *encrypted, BUFFER *privkey);
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int pk_encrypt(BUFFER *plaintext, BUFFER *privkey);
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int check_seckey(BUFFER *buf, const byte id[]);
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int check_pubkey(BUFFER *buf, const byte id[]);
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int v2createkey(void);
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int seckeytopub(BUFFER *pub, BUFFER *sec, byte keyid[]);
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/* configuration, general remailer functions */
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int mix_configline(char *line);
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int mix_initialized(void);
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int mix_daily(void);
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/* message pool */
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#define INTERMEDIATE 0
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int pool_send(void);
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int pool_read(BUFFER *pool);
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int pool_add(BUFFER *msg, char *type);
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FILE *pool_new(char *type, char *tmpname, char *path);
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int mix_pool(BUFFER *msg, int type, long latent);
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int pool_packetfile(char *fname, BUFFER *mid, int packetnum);
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void pool_packetexp(void);
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int idexp(void);
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void pop3get(void);
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/* statistics */
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int stats_log(int);
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int stats_out(int);
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/* OpenPGP */
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int pgp_keymgt(int force);
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int pgp_armor(BUFFER *buf, int mode);
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int pgp_dearmor(BUFFER *buf, BUFFER *out);
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int pgp_pubkeycert(BUFFER *userid, char *keyring, BUFFER *pass,
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BUFFER *out, int remail);
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int pgp_signtxt(BUFFER *msg, BUFFER *uid, BUFFER *pass,
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char *secring, int remail);
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int pgp_isconventional(BUFFER *buf);
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int pgp_mailenc(int mode, BUFFER *msg, char *sigid,
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BUFFER *pass, char *pubring, char *secring);
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int pgp_signhashalgo(BUFFER *algo, BUFFER *userid, char *secring,
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BUFFER *pass);
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/* menu */
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int menu_initialized;
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void menu_main(void);
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void menu_folder(char command, char *name);
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int menu_getuserpass(BUFFER *p, int mode);
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int user_pass(BUFFER *b);
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int user_confirmpass(BUFFER *b);
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void user_delpass(void);
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/* remailer */
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typedef struct {
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char name[20];
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int version;
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char addr[128];
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byte keyid[16];
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struct {
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unsigned int mix:1;
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unsigned int compress:1;
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unsigned int cpunk:1;
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unsigned int pgp:1;
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unsigned int pgponly:1;
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unsigned int latent:1;
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unsigned int hash:1;
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unsigned int ek:1;
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unsigned int esub:1;
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unsigned int nym:1;
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unsigned int newnym:1;
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unsigned int post:1;
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unsigned int middle:1;
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} flags;
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struct rinfo {
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int reliability;
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int latency;
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char history[13];
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} info[2];
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} REMAILER;
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#define CHAINMAX 421
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#define MAXREM 100
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int mix2_rlist(REMAILER remailer[]);
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int t1_rlist(REMAILER remailer[]);
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int pgp_rlist(REMAILER remailer[], int n);
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int chain_select(int hop[], char *chainstr, int maxrem, REMAILER *remailer,
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int type, BUFFER *feedback);
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int chain_rand(REMAILER *remailer, int maxrem,
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int thischain[], int chainlen, int t);
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int chain_randfinal(int type, REMAILER *remailer, int maxrem, int t);
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float chain_reliability(char *chain, int chaintype,
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char *reliability_string);
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int mix2_encrypt(int type, BUFFER *message, char *chainstr, int numcopies,
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BUFFER *feedback);
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int t1_encrypt(int type, BUFFER *message, char *chainstr, int latency,
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BUFFER *ek, BUFFER *feedback);
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int t1_getreply(BUFFER *msg, BUFFER *ek, int len);
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int t1_decrypt(BUFFER *in);
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int t2_decrypt(BUFFER *in);
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int mix2_decrypt(BUFFER *m);
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int mix3_decrypt(BUFFER *m);
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/* type 2 */
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#define MAGIC0 0
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#define MAGIC1 3
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int v3_magic(byte *b);
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int v2body(BUFFER *body);
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int v2body_setlen(BUFFER *body);
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int v2partial(BUFFER *body, BUFFER *mid, int packet, int numpackets);
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int v2_merge(BUFFER *mid);
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int mix_armor(BUFFER *in);
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int mix_dearmor(BUFFER *armored, BUFFER *bin);
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/* type 1 */
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#define HDRMARK "::"
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#define EKMARK "**"
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#define HASHMARK "##"
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int isline(BUFFER *line, char *text);
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/* nym database */
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#define NYM_WAITING 0
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#define NYM_OK 1
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#define NYM_DELETED 2
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#define NYM_ANY -1
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int nymlist_read(BUFFER *n);
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int nymlist_write(BUFFER *list);
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int nymlist_get(BUFFER *list, char *nym, BUFFER *config, BUFFER *ek,
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BUFFER *options, BUFFER *name, BUFFER *rblocks, int *status);
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int nymlist_append(BUFFER *list, char *nym, BUFFER *config, BUFFER *options,
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BUFFER *name, BUFFER *chains, BUFFER *eklist, int status);
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int nymlist_del(BUFFER *list, char *nym);
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int nymlist_getnym(char *nym, BUFFER *config, BUFFER *ek, BUFFER *opt,
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BUFFER *name, BUFFER *rblocks);
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int nymlist_getstatus(char *nym);
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/* Visual C lacks dirent */
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#ifdef _MSC
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typedef HANDLE DIR;
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struct dirent {
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char d_name[PATHMAX];
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};
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DIR *opendir(const char *name);
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struct dirent *readdir(DIR *dir);
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int closedir(DIR *dir);
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#endif
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/* sockets */
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#if defined(WIN32) && defined(USE_SOCK)
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#include <winsock.h>
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int sock_init(void);
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void sock_exit(void);
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#else
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typedef int SOCKET;
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#define INVALID_SOCKET -1
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SOCKET opensocket(char *hostname, int port);
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int closesocket(SOCKET s);
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#endif
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/* check for memory leaks */
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#ifdef DEBUG
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#define malloc mix3_malloc
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#define free mix3_free
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BUFFER *mix3_bufnew(char *, int, char*);
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#if __GNUC__ >= 2
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# define buf_new() mix3_bufnew(__FILE__, __LINE__, __PRETTY_FUNCTION__)
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#else
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# define buf_new() mix3_bufnew(__FILE__, __LINE__, "file")
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#endif
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#endif /* DEBUG */
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#endif
|
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