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Move USERADDR handling to a dedicated function.

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This commit is contained in:
George Kadianakis 2012-11-25 16:26:16 +02:00 committed by Nick Mathewson
parent 4a55e39997
commit 85b7c73168
1 changed files with 52 additions and 46 deletions
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98
src/or/connection_or.c
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@ -2564,15 +2564,6 @@ init_ext_or_auth_cookie_authentication(int is_enabled)
return 0;
}
/** Extended ORPort commands (Transport-to-Bridge) */
#define EXT_OR_CMD_TB_DONE 0x0000
#define EXT_OR_CMD_TB_USERADDR 0x0001
/** Extended ORPort commands (Bridge-to-Transport) */
#define EXT_OR_CMD_BT_OKAY 0x1000
#define EXT_OR_CMD_BT_DENY 0x1001
#define EXT_OR_CMD_BT_CONTROL 0x1002
/** DOCDOCDOC
Return -1 on error. 0 on unsufficient data. 1 on correct.
*/
@ -2761,6 +2752,57 @@ connection_ext_or_auth_process_inbuf(or_connection_t *or_conn)
}
}
/** Extended ORPort commands (Transport-to-Bridge) */
#define EXT_OR_CMD_TB_DONE 0x0000
#define EXT_OR_CMD_TB_USERADDR 0x0001
/** Extended ORPort commands (Bridge-to-Transport) */
#define EXT_OR_CMD_BT_OKAY 0x1000
#define EXT_OR_CMD_BT_DENY 0x1001
#define EXT_OR_CMD_BT_CONTROL 0x1002
static int
connection_ext_or_handle_useraddr(connection_t *conn, char *payload, uint16_t len)
{
/* Copy address string. */
tor_addr_t addr;
uint16_t port;
char *addr_str;
char *address_part=NULL;
int res;
addr_str = tor_malloc(len + 1);
memcpy(addr_str, payload, len);
addr_str[len] = 0;
res = tor_addr_port_split(LOG_INFO, addr_str, &address_part, &port);
tor_free(addr_str);
if (res<0)
return -1;
res = tor_addr_parse(&addr, address_part);
tor_free(address_part);
if (res<0)
return -1;
{ /* do some logging */
char *old_address = tor_dup_addr(&conn->addr);
char *new_address = tor_dup_addr(&addr);
log_warn(LD_NET, "Received USERADDR." /* XXX FIX ALL LOG SEVERITIES AND MESSAGES */
"We rewrite our address from '%s:%u' to '%s:%u'.",
safe_str(old_address), conn->port, safe_str(new_address), port);
tor_free(old_address);
tor_free(new_address);
}
/* record the address */
tor_addr_copy(&conn->addr, &addr);
conn->port = port;
return 0;
}
/** Process Extended ORPort messages from <b>or_conn</b>. */
int
connection_ext_or_process_inbuf(or_connection_t *or_conn)
@ -2810,44 +2852,8 @@ connection_ext_or_process_inbuf(or_connection_t *or_conn)
conn->state = EXT_OR_CONN_STATE_FLUSHING;
connection_stop_reading(conn);
} else if (command->cmd == EXT_OR_CMD_TB_USERADDR) {
/* XXX Put this in a function of its own. We need to empasize
that we change the address and port of this connection. */
/* Copy address string. */
tor_addr_t addr;
uint16_t port;
char *addr_str;
char *address_part=NULL;
int res;
addr_str = tor_malloc(command->len + 1);
memcpy(addr_str, command->body, command->len);
addr_str[command->len] = 0;
res = tor_addr_port_split(LOG_INFO, addr_str, &address_part, &port);
tor_free(addr_str);
if (res<0)
if (connection_ext_or_handle_useraddr(conn, command->body, command->len) < 0)
goto err;
res = tor_addr_parse(&addr, address_part);
tor_free(address_part);
if (res<0)
goto err;
{
char *old_address = tor_dup_addr(&conn->addr);
char *new_address = tor_dup_addr(&addr);
log_warn(LD_NET, "Received USERADDR." /* XXX FIX ALL LOG SEVERITIES AND MESSAGES */
"We rewrite our address from '%s:%u' to '%s:%u'.",
safe_str(old_address), conn->port, safe_str(new_address), port);
tor_free(old_address);
tor_free(new_address);
}
/* record the address */
tor_addr_copy(&conn->addr, &addr);
conn->port = port;
} else {
log_notice(LD_NET, "Got an Extended ORPort command we don't understand (%u).",
command->cmd);