src/agent.h

   1 /*
   2     Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012
   3     Ben Kibbey <bjk@luxsci.net>
   4
   5     This file is part of pwmd.
   6
   7     Pwmd 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 2 of the License, or
  10     (at your option) any later version.
  11
  12     Pwmd 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 Pwmd.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20 #ifndef AGENT_H
  21 #define AGENT_H
  22
  23 #include <assuan.h>
  24 #include <gpg-error.h>
  25 #include <gcrypt.h>
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <stdint.h>
  29 #include "crypto.h"
  30
  31 typedef struct
  32 {
  33   size_t len;
  34   void *buf;
  35 } membuf_t;
  36
  37 struct inquire_data_s
  38 {
  39   struct crypto_s *crypto;
  40   char *line;
  41   size_t len;
  42   int preset;
  43 };
  44
  45 struct agent_s
  46 {
  47   assuan_context_t ctx;
  48   assuan_context_t client_ctx;
  49   membuf_t data;
  50   gpg_error_t (*inquire_cb) (void *data, const char *line);
  51   void *inquire_data;
  52   void *inquire_data2;
  53   void *inquire_data3;
  54   char *desc;
  55   char *display;
  56   char *ttyname;
  57   char *ttytype;
  58   char *lc_messages;
  59   char *lc_ctype;
  60   int restart;
  61   size_t inquire_maxlen;
  62 };
  63
  64 void cleanup_agent (struct agent_s *agent);
  65 gpg_error_t send_to_agent (struct agent_s *agent, char **result, size_t * len,
  66                            const char *fmt, ...);
  67 gpg_error_t agent_init (struct agent_s **);
  68 gpg_error_t encrypt_data_file (assuan_context_t ctx, struct crypto_s *crypto,
  69                                gcry_sexp_t pubkey, gcry_sexp_t sigpkey,
  70                                const char *filename, const void *xml,
  71                                size_t len);
  72
  73 gpg_error_t generate_key (struct crypto_s *, char *, int, int);
  74 gpg_error_t set_agent_option (struct agent_s *agent, const char *name,
  75                               const char *value);
  76 gpg_error_t set_agent_passphrase (struct crypto_s *crypto, const char *key,
  77                                   size_t len);
  78 gpg_error_t set_pinentry_mode (struct agent_s *agent, const char *mode);
  79 gpg_error_t get_pubkey (struct crypto_s *crypto, const char *hexgrip,
  80                         gcry_sexp_t * result);
  81 gpg_error_t get_pubkey_bin (struct crypto_s *crypto,
  82                             const unsigned char *grip, gcry_sexp_t * result);
  83 gpg_error_t agent_set_pinentry_options (struct agent_s *agent);
  84 gpg_error_t agent_export_common (struct crypto_s *crypto, const char *keygrip,
  85                                  const char *sign_keygrip, int no_passphrase,
  86                                  const void *data, size_t datalen,
  87                                  const char *outfile, const char *keyparams,
  88                                  const char *keyfile);
  89 char *default_key_params (struct crypto_s *crypto);
  90 gpg_error_t agent_loopback_cb (void *user, const char *keyword);
  91 gpg_error_t agent_passwd (struct crypto_s *crypto);
  92 gpg_error_t kill_scd (struct agent_s *);
  93 gpg_error_t agent_extract_key (struct crypto_s *crypto, unsigned char **result,
  94                                size_t * result_len);
  95 gpg_error_t agent_verify (gcry_sexp_t pkey, gcry_sexp_t sig_sexp,
  96                           const void *data, size_t len);
  97 gpg_error_t send_agent_common_options (struct agent_s *agent);
  98
  99 #endif