src/common.h

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2006-2009 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 <assuan.h>
  27
  28 #ifdef ENABLE_NLS
  29 #ifdef HAVE_LOCALE_H
  30 #include <locale.h>
  31 #endif
  32 #endif
  33
  34 #include "gettext.h"
  35 #define N_(msgid)       gettext(msgid)
  36 #include "status.h"
  37
  38 enum {
  39     STATE_CONNECTED,
  40     STATE_OPEN
  41 };
  42
  43 typedef enum {
  44     INQUIRE_INIT,
  45     INQUIRE_BUSY,
  46     INQUIRE_DONE
  47 } inquire_status_t;
  48
  49 typedef enum {
  50     PINENTRY_OPEN,
  51     PINENTRY_SAVE
  52 } pinentry_cmd_t;
  53
  54 #ifdef WITH_PINENTRY
  55 typedef struct {
  56     size_t len;
  57     void *buf;
  58 } membuf_t;
  59
  60 typedef enum {
  61     PINENTRY_NONE,
  62     PINENTRY_INIT,
  63     PINENTRY_PID,
  64     PINENTRY_RUNNING,
  65     PINENTRY_TIMEOUT
  66 } pinentry_status_t;
  67
  68 typedef struct {
  69     gint fd;
  70     gpg_error_t error;
  71     pinentry_status_t status;
  72     union {
  73         gchar key[ASSUAN_LINELENGTH];
  74         pid_t pid;
  75     } what;
  76 } pinentry_key_s;
  77
  78 typedef gpg_error_t (*pinentry_finalize_cb)(assuan_context_t, guchar *, gboolean);
  79
  80 struct pinentry_s {
  81     pth_t tid;
  82     pth_mutex_t status_mutex;
  83     pth_mutex_t cond_mutex;
  84     pth_cond_t cond;
  85     pinentry_cmd_t which;
  86     gchar *filename;
  87     assuan_context_t ctx;
  88     pinentry_finalize_cb cb;
  89     pid_t pid;
  90     pid_t pin_pid;
  91     gint fd;
  92     pinentry_status_t status;
  93     gchar *name;
  94     gchar *title;
  95     gchar *desc;
  96     gchar *prompt;
  97     gchar *ttyname;
  98     gchar *ttytype;
  99     gchar *display;
 100     gchar *path;
 101     gchar *lcctype;
 102     gchar *lcmessages;
 103     gint timeout;
 104     gboolean has_lock;
 105     gint enable;
 106     membuf_t data;
 107     gpg_error_t (*inquire_cb)(void *data, const char *line);
 108     void *inquire_data;
 109 };
 110 #endif
 111
 112 typedef struct {
 113     guint8 magic[5];
 114     guint16 version;
 115     guint64 iter;
 116     guint64 flags;
 117     guint8 iv[16];
 118 } file_header_t;
 119
 120 typedef struct {
 121     gint iter;
 122     guint8 iv[16];
 123 } file_header_v1_t;
 124
 125 typedef struct {
 126     gboolean v1;
 127     gint fd;
 128     struct stat st;
 129     gpointer doc;
 130     goffset len;
 131
 132     union {
 133         file_header_v1_t fh1;
 134         file_header_t fh2;
 135     } ver;
 136 } file_header_internal_t;
 137
 138 struct client_thread_s {
 139     pth_t tid;
 140     pth_msgport_t mp;
 141     pth_t msg_tid;
 142     pth_mutex_t mp_mutex;
 143     gint fd;
 144     struct client_s *cl;
 145 };
 146
 147 struct assuan_cmd_s {
 148     assuan_context_t ctx;
 149     const gchar *line;
 150     gint line_len;
 151     const gchar *line2;
 152 };
 153
 154 /* For use with .flags in the data file header. */
 155 #define PWMD_CIPHER_OFFSET      (1)
 156 #define PWMD_CIPHER(n)          (PWMD_CIPHER_OFFSET << n)
 157 #define PWMD_CIPHER_AES128      PWMD_CIPHER(0)
 158 #define PWMD_CIPHER_AES192      PWMD_CIPHER(1)
 159 #define PWMD_CIPHER_AES256      PWMD_CIPHER(2)
 160 #define PWMD_CIPHER_SERPENT128  PWMD_CIPHER(3)
 161 #define PWMD_CIPHER_SERPENT192  PWMD_CIPHER(4)
 162 #define PWMD_CIPHER_SERPENT256  PWMD_CIPHER(5)
 163 #define PWMD_CIPHER_CAMELLIA128 PWMD_CIPHER(6)
 164 #define PWMD_CIPHER_CAMELLIA192 PWMD_CIPHER(7)
 165 #define PWMD_CIPHER_CAMELLIA256 PWMD_CIPHER(8)
 166 #define PWMD_CIPHER_3DES        PWMD_CIPHER(9)
 167 #define PWMD_CIPHER_CAST5       PWMD_CIPHER(10)
 168 #define PWMD_CIPHER_BLOWFISH    PWMD_CIPHER(11)
 169 #define PWMD_CIPHER_TWOFISH     PWMD_CIPHER(12)
 170 #define PWMD_CIPHER_TWOFISH128  PWMD_CIPHER(13)
 171
 172 #define PWMD_FLAG_OFFSET        (1<<15)
 173 #define PWMD_FLAG(n)            (PWMD_FLAG_OFFSET << n)
 174
 175 struct client_crypto_s {
 176     gpointer iv;
 177     gpointer key;
 178     gpointer tkey;
 179     gpointer tkey2;
 180     gpointer inbuf;
 181     goffset insize;
 182     gpointer outbuf;
 183     goffset outsize;
 184     file_header_internal_t *fh;
 185     gcry_cipher_hd_t gh;
 186     gsize blocksize;
 187     gsize keysize;
 188 };
 189
 190 /* These are flags that are set by a client via the OPTION command. */
 191 #define OPT_ITERATIONS  0x1
 192 #define OPT_PINENTRY    0x2
 193 #define OPT_PINENTRY_TO 0x4
 194
 195 struct client_s {
 196     assuan_context_t ctx;
 197 #ifdef WITH_PINENTRY
 198     struct pinentry_s *pinentry;
 199 #endif
 200     gpointer doc; /* xmlDocPtr */
 201     gpointer xml_error;
 202     gpointer xml;
 203     gint len;
 204     gint state;
 205     gchar *filename;
 206     guchar md5file[16];
 207     gboolean new;
 208     gboolean freed;
 209     time_t mtime;
 210     gboolean has_lock;
 211     gboolean is_lock_cmd;
 212     inquire_status_t inquire_status;
 213     struct client_thread_s *thd;
 214     struct client_crypto_s *crypto;
 215     guchar opts;
 216     gpg_error_t last_rc;
 217 };
 218
 219 GKeyFile *keyfileh;
 220 gboolean log_syslog;
 221 gint zlib_bufsize;
 222 pth_mutex_t rcfile_mutex;
 223 pth_mutex_t cn_mutex;
 224 GSList *cn_thread_list;
 225
 226 #define log_write0 log_write
 227
 228 #define log_write1(...) { \
 229     if (get_key_file_integer("global", "log_level") >= 1) \
 230         log_write(__VA_ARGS__); \
 231     }
 232
 233 #define log_write2(...) { \
 234     if (get_key_file_integer("global", "log_level") >= 2) \
 235         log_write(__VA_ARGS__); \
 236     }
 237
 238 void log_write(const gchar *fmt, ...);
 239 gpg_error_t send_error(assuan_context_t ctx, gpg_error_t pwmd_errno);
 240 gpg_error_t send_syserror(assuan_context_t ctx, int e);
 241 gint open_file(const gchar *filename, struct stat *st);
 242 gpg_error_t do_xml_encrypt(struct client_s *client, struct client_crypto_s *,
 243         const gchar *filename);
 244 gint get_key_file_integer(const gchar *section, const gchar *what);
 245 gdouble get_key_file_double(const gchar *section, const gchar *what);
 246 gboolean get_key_file_boolean(const gchar *section, const gchar *what);
 247 gchar *get_key_file_string(const gchar *section, const gchar *what);
 248 gchar *expand_homedir(gchar *str);
 249 void free_client(struct client_s *client);
 250 void cleanup_crypto(struct client_crypto_s **);
 251 struct client_crypto_s *init_client_crypto();
 252 gpg_error_t init_client_crypto2(const char *filename,
 253         struct client_crypto_s *crypto);
 254 gpg_error_t do_assuan_command(assuan_context_t ctx,
 255         void *(*cb)(void *data), void *data);
 256 void close_file_header(file_header_internal_t *fh);
 257 void cleanup_ev_cb(void *arg);
 258 void cleanup_mutex_cb(void *arg);
 259 void cleanup_fd_cb(void *arg);
 260 void cleanup_unlink_cb(void *arg);
 261 void cleanup_attr_cb(void *arg);
 262 void cleanup_cancel_cb(void *arg);
 263 guint pwmd_cipher_str_to_cipher(const gchar *str);
 264
 265 #endif