scd/scdaemon.h

   1 /* scdaemon.h - Global definitions for the SCdaemon
   2  *      Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
   3  *
   4  * This file is part of GnuPG.
   5  *
   6  * GnuPG is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GnuPG is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef SCDAEMON_H
  21 #define SCDAEMON_H
  22
  23 #ifdef GPG_ERR_SOURCE_DEFAULT
  24 #error GPG_ERR_SOURCE_DEFAULT already defined
  25 #endif
  26 #define GPG_ERR_SOURCE_DEFAULT  GPG_ERR_SOURCE_SCD
  27 #include <gpg-error.h>
  28
  29 #include <time.h>
  30 #include <gcrypt.h>
  31 #include "../common/util.h"
  32 #include "../common/sysutils.h"
  33
  34 /* To convey some special hash algorithms we use algorithm numbers
  35    reserved for application use. */
  36 #ifndef GCRY_MODULE_ID_USER
  37 #define GCRY_MODULE_ID_USER 1024
  38 #endif
  39 #define MD_USER_TLS_MD5SHA1 (GCRY_MODULE_ID_USER+1)
  40
  41 /* Maximum length of a digest.  */
  42 #define MAX_DIGEST_LEN 64
  43
  44
  45
  46 /* A large struct name "opt" to keep global flags. */
  47 struct
  48 {
  49   unsigned int debug; /* Debug flags (DBG_foo_VALUE). */
  50   int verbose;        /* Verbosity level. */
  51   int quiet;          /* Be as quiet as possible. */
  52   int dry_run;        /* Don't change any persistent data. */
  53   int batch;          /* Batch mode. */
  54   const char *homedir;      /* Configuration directory name. */
  55   const char *ctapi_driver; /* Library to access the ctAPI. */
  56   const char *pcsc_driver;  /* Library to access the PC/SC system. */
  57   const char *reader_port;  /* NULL or reder port to use. */
  58   int disable_ccid;    /* Disable the use of the internal CCID driver. */
  59   int disable_keypad;  /* Do not use a keypad. */
  60   int allow_admin;     /* Allow the use of admin commands for certain
  61                           cards. */
  62   strlist_t disabled_applications;  /* Card applications we do not
  63                                        want to use. */
  64   unsigned long card_timeout; /* Disconnect after N seconds of inactivity.  */
  65 } opt;
  66
  67
  68 #define DBG_COMMAND_VALUE 1     /* debug commands i/o */
  69 #define DBG_MPI_VALUE     2     /* debug mpi details */
  70 #define DBG_CRYPTO_VALUE  4     /* debug low level crypto */
  71 #define DBG_MEMORY_VALUE  32    /* debug memory allocation stuff */
  72 #define DBG_CACHE_VALUE   64    /* debug the caching */
  73 #define DBG_MEMSTAT_VALUE 128   /* show memory statistics */
  74 #define DBG_HASHING_VALUE 512   /* debug hashing operations */
  75 #define DBG_ASSUAN_VALUE 1024
  76 #define DBG_CARD_IO_VALUE 2048
  77
  78 #define DBG_COMMAND (opt.debug & DBG_COMMAND_VALUE)
  79 #define DBG_CRYPTO  (opt.debug & DBG_CRYPTO_VALUE)
  80 #define DBG_MEMORY  (opt.debug & DBG_MEMORY_VALUE)
  81 #define DBG_CACHE   (opt.debug & DBG_CACHE_VALUE)
  82 #define DBG_HASHING (opt.debug & DBG_HASHING_VALUE)
  83 #define DBG_ASSUAN  (opt.debug & DBG_ASSUAN_VALUE)
  84 #define DBG_CARD_IO (opt.debug & DBG_CARD_IO_VALUE)
  85
  86 struct server_local_s;
  87 struct app_ctx_s;
  88
  89 struct server_control_s
  90 {
  91   /* Private data used to fire up the connection thread.  We use this
  92      structure do avoid an extra allocation for just a few bytes. */
  93   struct {
  94     gnupg_fd_t fd;
  95   } thread_startup;
  96
  97   /* Local data of the server; used only in command.c. */
  98   struct server_local_s *server_local;
  99
 100   /* Slot of the open reader or -1 if not open. */
 101   int reader_slot;
 102
 103   /* The application context used with this connection or NULL if none
 104      associated.  Note that this is shared with the other connections:
 105      All connections accessing the same reader are using the same
 106      application context. */
 107   struct app_ctx_s *app_ctx;
 108
 109   /* Helper to store the value we are going to sign */
 110   struct
 111   {
 112     unsigned char *value;
 113     int valuelen;
 114   } in_data;
 115 };
 116
 117 typedef struct app_ctx_s *app_t;
 118
 119 /*-- scdaemon.c --*/
 120 void scd_exit (int rc);
 121 const char *scd_get_socket_name (void);
 122
 123 /*-- command.c --*/
 124 void initialize_module_command (void);
 125 int  scd_command_handler (ctrl_t, int);
 126 void send_status_info (ctrl_t ctrl, const char *keyword, ...)
 127      GNUPG_GCC_A_SENTINEL(1);
 128 void send_status_direct (ctrl_t ctrl, const char *keyword, const char *args);
 129 void scd_update_reader_status_file (void);
 130
 131
 132 #endif /*SCDAEMON_H*/