src/common.h

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2006-2008 Ben Kibbey <bjk@luxsci.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA
  18 */
  19 #ifndef COMMON_H
  20 #define COMMON_H
  21
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <pth.h>
  25 #include <gcrypt.h>
  26 #include "status.h"
  27
  28 #define _ASSUAN_ONLY_GPG_ERRORS 1
  29 #include <assuan.h>
  30
  31 #ifdef ENABLE_NLS
  32 #ifdef HAVE_LOCALE_H
  33 #include <locale.h>
  34 #endif
  35 #endif
  36
  37 #include "gettext.h"
  38 #define N_(msgid)       gettext(msgid)
  39
  40 enum {
  41     STATE_CONNECTED,
  42     STATE_OPEN
  43 };
  44
  45 typedef enum {
  46     INQUIRE_INIT,
  47     INQUIRE_BUSY,
  48     INQUIRE_DONE
  49 } inquire_status_t;
  50
  51 typedef enum {
  52     PINENTRY_OPEN,
  53     PINENTRY_SAVE
  54 } pinentry_cmd_t;
  55
  56 #ifdef WITH_PINENTRY
  57 typedef struct {
  58     size_t len;
  59     void *buf;
  60 } membuf_t;
  61
  62 typedef enum {
  63     PINENTRY_NONE,
  64     PINENTRY_INIT,
  65     PINENTRY_PID,
  66     PINENTRY_RUNNING,
  67     PINENTRY_TIMEOUT
  68 } pinentry_status_t;
  69
  70 typedef struct {
  71     gint fd;
  72     gpg_error_t error;
  73     pinentry_status_t status;
  74     union {
  75         gchar key[ASSUAN_LINELENGTH];
  76         pid_t pid;
  77     } what;
  78 } pinentry_key_s;
  79
  80 typedef gpg_error_t (*pinentry_finalize_cb)(assuan_context_t, guchar *, gboolean);
  81
  82 struct pinentry_s {
  83     pth_t tid;
  84     pth_mutex_t status_mutex;
  85     pth_event_t ev;
  86     pinentry_cmd_t which;
  87     gchar *filename;
  88     assuan_context_t ctx;
  89     pinentry_finalize_cb cb;
  90     pid_t pid;
  91     pid_t pin_pid;
  92     gint fd;
  93     pinentry_status_t status;
  94     gchar *title;
  95     gchar *desc;
  96     gchar *prompt;
  97     gchar *ttyname;
  98     gchar *ttytype;
  99     gchar *display;
 100     gchar *path;
 101     gint timeout;
 102     gboolean has_lock;
 103     gint enable;
 104     membuf_t data;
 105     int (*inquire_cb)(void *data, const char *line);
 106     void *inquire_data;
 107 };
 108 #endif
 109
 110 typedef struct {
 111     guint iter;
 112     guchar iv[16];      /* FIXME: is this portable? */
 113     guint version;
 114 } file_header_t;
 115
 116 typedef struct {
 117     gint iter;
 118     guchar iv[16];      /* FIXME: is this portable? */
 119 } file_header_v1_t;
 120
 121 typedef struct {
 122     gboolean v1;
 123     gint fd;
 124     struct stat st;
 125     gpointer doc;
 126     gsize len;
 127
 128     union {
 129         file_header_v1_t fh1;
 130         file_header_t fh2;
 131     };
 132 } file_header_internal_t;
 133
 134 struct client_thread_s {
 135     pth_t tid;
 136     gint fd;
 137     pth_msgport_t msg;
 138     pth_t msg_tid;
 139     pth_event_t msg_ev;
 140     gchar *msg_name;
 141     struct client_s *cl;
 142 #ifdef WITH_GNUTLS
 143     gboolean remote;
 144     struct tls_s *tls;
 145 #endif
 146 };
 147
 148 struct client_crypto_s {
 149     gpointer iv;
 150     gpointer key;
 151     gpointer tkey;
 152     gpointer tkey2;
 153     gpointer inbuf;
 154     gpointer outbuf;
 155     file_header_internal_t *fh;
 156     gcry_cipher_hd_t gh;
 157 };
 158
 159 struct client_s {
 160     assuan_context_t ctx;
 161 #ifdef WITH_PINENTRY
 162     struct pinentry_s *pinentry;
 163 #endif
 164     gpointer doc; /* xmlDocPtr */
 165     gpointer xml_error;
 166     gpointer xml;
 167     gint len;
 168     gint state;
 169     gchar *filename;
 170     guchar md5file[16];
 171     gboolean new;
 172     gboolean freed;
 173     time_t mtime;
 174     gboolean has_lock;
 175     gboolean is_lock_cmd;
 176     inquire_status_t inquire_status;
 177     struct client_thread_s *thd;
 178     struct client_crypto_s *crypto;
 179 };
 180
 181 gsize gcrykeysize, gcryblocksize;
 182 GKeyFile *keyfileh;
 183 gboolean log_syslog;
 184 gint zlib_bufsize;
 185
 186 void log_write(const gchar *fmt, ...);
 187 gpg_error_t send_error(assuan_context_t ctx, gpg_error_t pwmd_errno);
 188 gpg_error_t send_syserror(assuan_context_t ctx, int e);
 189 gint open_file(const gchar *filename, struct stat *st);
 190 gpg_error_t do_xml_encrypt(struct client_s *client, struct client_crypto_s *,
 191         const gchar *filename, gpointer data, size_t insize);
 192 gint get_key_file_integer(const gchar *section, const gchar *what);
 193 gboolean get_key_file_boolean(const gchar *section, const gchar *what);
 194 gchar *get_key_file_string(const gchar *section, const gchar *what);
 195 gchar *expand_homedir(gchar *str);
 196 void free_client(struct client_s *client);
 197 gpg_error_t send_status(assuan_context_t ctx, status_msg_t which,
 198         const gchar *fmt, ...);
 199 void cleanup_crypto(struct client_crypto_s **);
 200 struct client_crypto_s *init_client_crypto();
 201
 202 #endif