g10/main.h

   1 /* main.h
   2  * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   3  *               2008, 2009 Free Software Foundation, Inc.
   4  *
   5  * This file is part of GnuPG.
   6  *
   7  * GnuPG is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * GnuPG is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19  */
  20 #ifndef G10_MAIN_H
  21 #define G10_MAIN_H
  22
  23 #include "types.h"
  24 #include "iobuf.h"
  25 #include "cipher.h"
  26 #include "keydb.h"
  27 #include "util.h"
  28
  29
  30 /* It could be argued that the default cipher should be 3DES rather
  31    than CAST5, and the default compression should be 0
  32    (i.e. uncompressed) rather than 1 (zip).  However, the real world
  33    issues of speed and size come into play here. */
  34
  35 #define DEFAULT_CIPHER_ALGO     CIPHER_ALGO_CAST5
  36 #define DEFAULT_DIGEST_ALGO     DIGEST_ALGO_SHA1
  37 #define DEFAULT_COMPRESS_ALGO   COMPRESS_ALGO_ZIP
  38 #define DEFAULT_S2K_DIGEST_ALGO DIGEST_ALGO_SHA1
  39
  40 #define S2K_DIGEST_ALGO (opt.s2k_digest_algo?opt.s2k_digest_algo:DEFAULT_S2K_DIGEST_ALGO)
  41
  42 typedef struct
  43 {
  44   int header_okay;
  45   PK_LIST pk_list;
  46   DEK *symkey_dek;
  47   STRING2KEY *symkey_s2k;
  48   cipher_filter_context_t cfx;
  49 } encrypt_filter_context_t;
  50
  51 struct groupitem
  52 {
  53   char *name;
  54   strlist_t values;
  55   struct groupitem *next;
  56 };
  57
  58 /*-- gpg.c --*/
  59 extern int g10_errors_seen;
  60
  61 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
  62   void g10_exit(int rc) __attribute__ ((noreturn));
  63 #else
  64   void g10_exit(int rc);
  65 #endif
  66 void print_pubkey_algo_note( int algo );
  67 void print_cipher_algo_note( int algo );
  68 void print_digest_algo_note( int algo );
  69
  70 /*-- armor.c --*/
  71 char *make_radix64_string( const byte *data, size_t len );
  72
  73 /*-- misc.c --*/
  74 void trap_unaligned(void);
  75 int disable_core_dumps(void);
  76 void register_secured_file (const char *fname);
  77 void unregister_secured_file (const char *fname);
  78 int  is_secured_file (int fd);
  79 int  is_secured_filename (const char *fname);
  80 u16 checksum_u16( unsigned n );
  81 u16 checksum( byte *p, unsigned n );
  82 u16 checksum_mpi( gcry_mpi_t a );
  83 u32 buffer_to_u32( const byte *buffer );
  84 const byte *get_session_marker( size_t *rlen );
  85 int map_cipher_openpgp_to_gcry (int algo);
  86 #define openpgp_cipher_open(_a,_b,_c,_d) gcry_cipher_open((_a),map_cipher_openpgp_to_gcry((_b)),(_c),(_d))
  87 #define openpgp_cipher_get_algo_keylen(_a) gcry_cipher_get_algo_keylen(map_cipher_openpgp_to_gcry((_a)))
  88 #define openpgp_cipher_get_algo_blklen(_a) gcry_cipher_get_algo_blklen(map_cipher_openpgp_to_gcry((_a)))
  89 int openpgp_cipher_blocklen (int algo);
  90 int openpgp_cipher_test_algo( int algo );
  91 const char *openpgp_cipher_algo_name (int algo);
  92 int openpgp_pk_test_algo( int algo );
  93 int openpgp_pk_test_algo2 ( int algo, unsigned int use );
  94 int openpgp_pk_algo_usage ( int algo );
  95 int openpgp_md_test_algo( int algo );
  96
  97 #ifdef USE_IDEA
  98 void idea_cipher_warn( int show );
  99 #else
 100 #define idea_cipher_warn(a)  do { } while (0)
 101 #endif
 102
 103 struct expando_args
 104 {
 105   PKT_public_key *pk;
 106   PKT_secret_key *sk;
 107   byte imagetype;
 108   int validity_info;
 109   const char *validity_string;
 110 };
 111
 112 char *pct_expando(const char *string,struct expando_args *args);
 113 void deprecated_warning(const char *configname,unsigned int configlineno,
 114                         const char *option,const char *repl1,const char *repl2);
 115 void deprecated_command (const char *name);
 116 void obsolete_option (const char *configname, unsigned int configlineno,
 117                       const char *name);
 118
 119 int string_to_cipher_algo (const char *string);
 120 int string_to_digest_algo (const char *string);
 121
 122 const char *compress_algo_to_string(int algo);
 123 int string_to_compress_algo(const char *string);
 124 int check_compress_algo(int algo);
 125 int default_cipher_algo(void);
 126 int default_compress_algo(void);
 127 const char *compliance_option_string(void);
 128 void compliance_failure(void);
 129
 130 struct parse_options
 131 {
 132   char *name;
 133   unsigned int bit;
 134   char **value;
 135   char *help;
 136 };
 137
 138 char *optsep(char **stringp);
 139 char *argsplit(char *string);
 140 int parse_options(char *str,unsigned int *options,
 141                   struct parse_options *opts,int noisy);
 142 int has_invalid_email_chars (const char *s);
 143 int is_valid_mailbox (const char *name);
 144 const char *get_libexecdir (void);
 145 int path_access(const char *file,int mode);
 146
 147 /* Temporary helpers. */
 148 int pubkey_get_npkey( int algo );
 149 int pubkey_get_nskey( int algo );
 150 int pubkey_get_nsig( int algo );
 151 int pubkey_get_nenc( int algo );
 152 unsigned int pubkey_nbits( int algo, gcry_mpi_t *pkey );
 153 int mpi_print( FILE *fp, gcry_mpi_t a, int mode );
 154
 155 /*-- status.c --*/
 156 void set_status_fd ( int fd );
 157 int  is_status_enabled ( void );
 158 void write_status ( int no );
 159 void write_status_error (const char *where, int errcode);
 160 void write_status_text ( int no, const char *text );
 161 void write_status_buffer ( int no,
 162                            const char *buffer, size_t len, int wrap );
 163 void write_status_text_and_buffer ( int no, const char *text,
 164                                     const char *buffer, size_t len, int wrap );
 165
 166 void write_status_begin_signing (gcry_md_hd_t md);
 167
 168
 169 int cpr_enabled(void);
 170 char *cpr_get( const char *keyword, const char *prompt );
 171 char *cpr_get_no_help( const char *keyword, const char *prompt );
 172 char *cpr_get_utf8( const char *keyword, const char *prompt );
 173 char *cpr_get_hidden( const char *keyword, const char *prompt );
 174 void cpr_kill_prompt(void);
 175 int  cpr_get_answer_is_yes( const char *keyword, const char *prompt );
 176 int  cpr_get_answer_yes_no_quit( const char *keyword, const char *prompt );
 177 int  cpr_get_answer_okay_cancel (const char *keyword,
 178                                  const char *prompt,
 179                                  int def_answer);
 180
 181 /*-- helptext.c --*/
 182 void display_online_help( const char *keyword );
 183
 184 /*-- encode.c --*/
 185 int setup_symkey(STRING2KEY **symkey_s2k,DEK **symkey_dek);
 186 int encode_symmetric( const char *filename );
 187 int encode_store( const char *filename );
 188 int encode_crypt( const char *filename, strlist_t remusr, int use_symkey );
 189 void encode_crypt_files(int nfiles, char **files, strlist_t remusr);
 190 int encrypt_filter( void *opaque, int control,
 191                     iobuf_t a, byte *buf, size_t *ret_len);
 192
 193
 194 /*-- sign.c --*/
 195 int complete_sig( PKT_signature *sig, PKT_secret_key *sk, gcry_md_hd_t md );
 196 int sign_file( strlist_t filenames, int detached, strlist_t locusr,
 197                int do_encrypt, strlist_t remusr, const char *outfile );
 198 int clearsign_file( const char *fname, strlist_t locusr, const char *outfile );
 199 int sign_symencrypt_file (const char *fname, strlist_t locusr);
 200
 201 /*-- sig-check.c --*/
 202 int check_revocation_keys (PKT_public_key *pk, PKT_signature *sig);
 203 int check_backsig(PKT_public_key *main_pk,PKT_public_key *sub_pk,
 204                   PKT_signature *backsig);
 205 int check_key_signature( KBNODE root, KBNODE node, int *is_selfsig );
 206 int check_key_signature2( KBNODE root, KBNODE node, PKT_public_key *check_pk,
 207                           PKT_public_key *ret_pk, int *is_selfsig,
 208                           u32 *r_expiredate, int *r_expired );
 209
 210 /*-- delkey.c --*/
 211 int delete_keys( strlist_t names, int secret, int allow_both );
 212
 213 /*-- keyedit.c --*/
 214 void keyedit_menu( const char *username, strlist_t locusr,
 215                    strlist_t commands, int quiet, int seckey_check );
 216 void show_basic_key_info (KBNODE keyblock);
 217
 218 /*-- keygen.c --*/
 219 u32 parse_expire_string(const char *string);
 220 u32 ask_expire_interval(int object,const char *def_expire);
 221 u32 ask_expiredate(void);
 222 void generate_keypair( const char *fname, const char *card_serialno,
 223                        const char *backup_encryption_dir );
 224 int keygen_set_std_prefs (const char *string,int personal);
 225 PKT_user_id *keygen_get_std_prefs (void);
 226 int keygen_add_key_expire( PKT_signature *sig, void *opaque );
 227 int keygen_add_std_prefs( PKT_signature *sig, void *opaque );
 228 int keygen_upd_std_prefs( PKT_signature *sig, void *opaque );
 229 int keygen_add_keyserver_url(PKT_signature *sig, void *opaque);
 230 int keygen_add_notations(PKT_signature *sig,void *opaque);
 231 int keygen_add_revkey(PKT_signature *sig, void *opaque);
 232 int make_backsig(PKT_signature *sig,PKT_public_key *pk,
 233                  PKT_public_key *sub_pk,PKT_secret_key *sub_sk,
 234                  u32 timestamp);
 235 int generate_subkeypair( KBNODE pub_keyblock, KBNODE sec_keyblock );
 236 #ifdef ENABLE_CARD_SUPPORT
 237 int generate_card_subkeypair (KBNODE pub_keyblock, KBNODE sec_keyblock,
 238                               int keyno, const char *serialno);
 239 int save_unprotected_key_to_card (PKT_secret_key *sk, int keyno);
 240 #endif
 241
 242 /*-- openfile.c --*/
 243 int overwrite_filep( const char *fname );
 244 char *make_outfile_name( const char *iname );
 245 char *ask_outfile_name( const char *name, size_t namelen );
 246 int   open_outfile( const char *iname, int mode, iobuf_t *a );
 247 iobuf_t open_sigfile( const char *iname, progress_filter_context_t *pfx );
 248 void try_make_homedir( const char *fname );
 249
 250 /*-- seskey.c --*/
 251 void make_session_key( DEK *dek );
 252 gcry_mpi_t encode_session_key( DEK *dek, unsigned nbits );
 253 gcry_mpi_t encode_md_value( PKT_public_key *pk, PKT_secret_key *sk,
 254                             gcry_md_hd_t md, int hash_algo );
 255
 256 /*-- import.c --*/
 257 int parse_import_options(char *str,unsigned int *options,int noisy);
 258 void import_keys( char **fnames, int nnames,
 259                   void *stats_hd, unsigned int options );
 260 int import_keys_stream( iobuf_t inp,void *stats_hd,unsigned char **fpr,
 261                         size_t *fpr_len,unsigned int options );
 262 void *import_new_stats_handle (void);
 263 void import_release_stats_handle (void *p);
 264 void import_print_stats (void *hd);
 265
 266 int collapse_uids( KBNODE *keyblock );
 267
 268 int auto_create_card_key_stub ( const char *serialnostr,
 269                                 const unsigned char *fpr1,
 270                                 const unsigned char *fpr2,
 271                                 const unsigned char *fpr3);
 272
 273 /*-- export.c --*/
 274 int parse_export_options(char *str,unsigned int *options,int noisy);
 275 int export_pubkeys( strlist_t users, unsigned int options );
 276 int export_pubkeys_stream( iobuf_t out, strlist_t users,
 277                            KBNODE *keyblock_out, unsigned int options );
 278 int export_seckeys( strlist_t users );
 279 int export_secsubkeys( strlist_t users );
 280
 281 /* dearmor.c --*/
 282 int dearmor_file( const char *fname );
 283 int enarmor_file( const char *fname );
 284
 285 /*-- revoke.c --*/
 286 struct revocation_reason_info;
 287 int gen_revoke( const char *uname );
 288 int gen_desig_revoke( const char *uname, strlist_t locusr);
 289 int revocation_reason_build_cb( PKT_signature *sig, void *opaque );
 290 struct revocation_reason_info *
 291                 ask_revocation_reason( int key_rev, int cert_rev, int hint );
 292 void release_revocation_reason_info( struct revocation_reason_info *reason );
 293
 294 /*-- keylist.c --*/
 295 void public_key_list( strlist_t list, int locate_mode );
 296 void secret_key_list( strlist_t list );
 297 void print_subpackets_colon(PKT_signature *sig);
 298 void reorder_keyblock (KBNODE keyblock);
 299 void list_keyblock( KBNODE keyblock, int secret, int fpr, void *opaque );
 300 void print_fingerprint (PKT_public_key *pk, PKT_secret_key *sk, int mode);
 301 void print_revokers(PKT_public_key *pk);
 302 void show_policy_url(PKT_signature *sig,int indent,int mode);
 303 void show_keyserver_url(PKT_signature *sig,int indent,int mode);
 304 void show_notation(PKT_signature *sig,int indent,int mode,int which);
 305 void dump_attribs(const PKT_user_id *uid,
 306                   PKT_public_key *pk,PKT_secret_key *sk);
 307 void set_attrib_fd(int fd);
 308 void print_seckey_info (PKT_secret_key *sk);
 309 void print_pubkey_info (FILE *fp, PKT_public_key *pk);
 310 void print_card_key_info (FILE *fp, KBNODE keyblock);
 311
 312 /*-- verify.c --*/
 313 void print_file_status( int status, const char *name, int what );
 314 int verify_signatures( int nfiles, char **files );
 315 int verify_files( int nfiles, char **files );
 316 int gpg_verify (ctrl_t ctrl, int sig_fd, int data_fd, FILE *out_fp);
 317
 318 /*-- decrypt.c --*/
 319 int decrypt_message( const char *filename );
 320 void decrypt_messages(int nfiles, char *files[]);
 321
 322 /*-- plaintext.c --*/
 323 int hash_datafiles( gcry_md_hd_t md, gcry_md_hd_t md2,
 324                     strlist_t files, const char *sigfilename, int textmode );
 325 int hash_datafile_by_fd ( gcry_md_hd_t md, gcry_md_hd_t md2, int data_fd,
 326                           int textmode );
 327 PKT_plaintext *setup_plaintext_name(const char *filename,IOBUF iobuf);
 328
 329 /*-- signal.c --*/
 330 void init_signals(void);
 331 void pause_on_sigusr( int which );
 332 void block_all_signals(void);
 333 void unblock_all_signals(void);
 334
 335 /*-- server.c --*/
 336 int gpg_server (ctrl_t);
 337
 338 #ifdef ENABLE_CARD_SUPPORT
 339 /*-- card-util.c --*/
 340 void change_pin (int no, int allow_admin);
 341 void card_status (FILE *fp, char *serialno, size_t serialnobuflen);
 342 void card_edit (strlist_t commands);
 343 int  card_generate_subkey (KBNODE pub_keyblock, KBNODE sec_keyblock);
 344 int  card_store_subkey (KBNODE node, int use);
 345 #endif
 346
 347 #define S2K_DECODE_COUNT(_val) ((16ul + ((_val) & 15)) << (((_val) >> 4) + 6))
 348
 349 #endif /*G10_MAIN_H*/