*/
struct GNUNET_FRIENDS_Writer
{
+ /**
+ * Handle to the file.
+ */
+ struct GNUNET_DISK_FileHandle *fh;
};
struct GNUNET_FRIENDS_Writer *
GNUNET_FRIENDS_write_start (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- return NULL;
+ struct GNUNET_FRIENDS_Writer *w;
+ char *fn;
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "TOPOLOGY", "FRIENDS", &fn))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "topology", "FRIENDS");
+ return NULL;
+ }
+ if (GNUNET_OK == GNUNET_DISK_file_test (fn))
+ GNUNET_DISK_file_backup (fn);
+ w = GNUNET_new (struct GNUNET_FRIENDS_Writer);
+ w->fh = GNUNET_DISK_file_open (fn,
+ GNUNET_DISK_OPEN_CREATE |
+ GNUNET_DISK_OPEN_WRITE |
+ GNUNET_DISK_OPEN_FAILIFEXISTS,
+ GNUNET_DISK_PERM_USER_READ);
+ if (NULL == w->fh)
+ {
+ GNUNET_free (w);
+ return NULL;
+ }
+ return w;
}
int
GNUNET_FRIENDS_write_stop (struct GNUNET_FRIENDS_Writer *w)
{
- return GNUNET_SYSERR;
+ int ret;
+
+ ret = GNUNET_DISK_file_close (w->fh);
+ GNUNET_free (w);
+ return ret;
}
GNUNET_FRIENDS_write (struct GNUNET_FRIENDS_Writer *w,
const struct GNUNET_PeerIdentity *friend)
{
- return GNUNET_SYSERR;
+ char *buf;
+ char *ret;
+ size_t slen;
+
+ ret = GNUNET_CRYPTO_ecc_public_sign_key_to_string (&friend->public_key);
+ GNUNET_asprintf (&buf,
+ "%s\n",
+ ret);
+ GNUNET_free (ret);
+ slen = strlen (buf);
+ if (slen !=
+ GNUNET_DISK_file_write (w->fh,
+ buf,
+ slen))
+ {
+ GNUNET_free (buf);
+ return GNUNET_SYSERR;
+ }
+ GNUNET_free (buf);
+ return GNUNET_OK;
}