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authorjames <james@e7ae566f-a301-0410-adde-c780ea21d3b5>2008-08-05 04:44:31 +0000
committerjames <james@e7ae566f-a301-0410-adde-c780ea21d3b5>2008-08-05 04:44:31 +0000
commitf77c60d3d6a7567eb82d5856921b13eefef747b7 (patch)
treec3e0d0a44074bca5c4df15f28c4978ea00957f81 /tun.h
parentFixed minor issue with --redirect-gateway bypass-dhcp or bypass-dns (diff)
downloadopenvpn-f77c60d3d6a7567eb82d5856921b13eefef747b7.tar.xz
Added additional warnings to flag common gotchas:
* Warn when ethernet bridging that the IP address of the bridge adapter is probably not the same address that the LAN adapter was set to previously. * When running as a server, warn if the LAN network address is the all-popular 192.168.[0|1].x, since this condition commonly leads to subnet conflicts down the road. * Primarily on the client, check for subnet conflicts between the local LAN and the VPN subnet. Added a 'netmask' parameter to get_default_gateway, to return the netmask of the adapter containing the default gateway. Only implemented on Windows so far. Other platforms will return 255.255.255.0. Currently the netmask information is only used to warn about subnet conflicts. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3179 e7ae566f-a301-0410-adde-c780ea21d3b5
Diffstat (limited to 'tun.h')
-rw-r--r--tun.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/tun.h b/tun.h
index b61041e..072d550 100644
--- a/tun.h
+++ b/tun.h
@@ -241,6 +241,12 @@ const char *ifconfig_options_string (const struct tuntap* tt, bool remote, bool
bool is_tun_p2p (const struct tuntap *tt);
+void check_subnet_conflict (const in_addr_t ip,
+ const in_addr_t netmask,
+ const char *prefix);
+
+void warn_on_use_of_common_subnets (void);
+
/*
* Inline functions
*/
@@ -313,7 +319,11 @@ const IP_ADAPTER_INFO *get_adapter (const IP_ADAPTER_INFO *ai, DWORD index);
bool is_adapter_up (const struct tuntap *tt, const IP_ADAPTER_INFO *list);
bool is_ip_in_adapter_subnet (const IP_ADAPTER_INFO *ai, const in_addr_t ip, in_addr_t *highest_netmask);
-DWORD adapter_index_of_ip (const IP_ADAPTER_INFO *list, const in_addr_t ip, int *count);
+
+DWORD adapter_index_of_ip (const IP_ADAPTER_INFO *list,
+ const in_addr_t ip,
+ int *count,
+ in_addr_t *netmask);
void show_tap_win32_adapters (int msglev, int warnlev);
void show_adapters (int msglev);