[cgutman] 48213: [DHCPCSVC] - Generate a link-local IP address if DHCP fails - Don't destroy the IP addresses in the registry

Author: cgutman
Date: Fri Jul 23 21:57:08 2010
New Revision: 48213

URL: http://svn.reactos.org/svn/reactos?rev=48213&view=rev
Log:
[DHCPCSVC]
- Generate a link-local IP address if DHCP fails
- Don't destroy the IP addresses in the registry

Modified:
    trunk/reactos/dll/win32/dhcpcsvc/dhcp/dhclient.c
    trunk/reactos/dll/win32/dhcpcsvc/include/rosdhcp.h

Modified: trunk/reactos/dll/win32/dhcpcsvc/dhcp/dhclient.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/dhcpcsvc/dhcp/dh…
==============================================================================
--- trunk/reactos/dll/win32/dhcpcsvc/dhcp/dhclient.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/dhcpcsvc/dhcp/dhclient.c [iso-8859-1] Fri Jul 23 21:57:08
2010
@@ -574,8 +574,6 @@
                     strcat(Buffer, ".");
             }
             RegSetValueExA(hkey, "DhcpSubnetMask", 0, REG_SZ, (LPBYTE)Buffer,
strlen(Buffer)+1);
-            RegSetValueExA(hkey, "IPAddress", 0, REG_SZ,
(LPBYTE)"0.0.0.0", 8);
-            RegSetValueExA(hkey, "SubnetMask", 0, REG_SZ,
(LPBYTE)"0.0.0.0", 8);
             dwEnableDHCP = 1;
             RegSetValueExA(hkey, "EnableDHCP", 0, REG_DWORD,
(LPBYTE)&dwEnableDHCP, sizeof(DWORD));
         }
@@ -614,7 +612,6 @@
                     strcat(Buffer, ".");
             }
             RegSetValueExA(hkey, "DhcpDefaultGateway", 0, REG_SZ,
(LPBYTE)Buffer, strlen(Buffer)+1);
-            RegSetValueExA(hkey, "DefaultGateway", 0, REG_SZ,
(LPBYTE)"0.0.0.0", 8);
         }
     }
 
@@ -1103,6 +1100,7 @@
 state_panic(void *ipp)
 {
 	struct interface_info *ip = ipp;
+        PDHCP_ADAPTER Adapter = AdapterFindInfo(ip);
 	time_t cur_time;
 
 	time(&cur_time);
@@ -1113,7 +1111,19 @@
 	ip->client->state = S_INIT;
 	add_timeout(cur_time + ip->client->config->retry_interval, state_init,
 	    ip);
-        /* XXX Take any failure actions necessary */
+
+        if (!Adapter->NteContext)
+        {
+            /* Generate an automatic private address */
+            DbgPrint("DHCPCSVC: Failed to receive a response from a DHCP server. An
automatic private address will be assigned.\n");
+
+            /* FIXME: The address generation code sucks */
+            AddIPAddress(htonl(0xA9FE0000 | (rand() % 0xFFFF)), //169.254.X.X
+                         htonl(0xFFFF0000), //255.255.0.0
+                         Adapter->IfMib.dwIndex,
+                         &Adapter->NteContext,
+                         &Adapter->NteInstance);
+        }
 }
 
 void

Modified: trunk/reactos/dll/win32/dhcpcsvc/include/rosdhcp.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/dhcpcsvc/include…
==============================================================================
--- trunk/reactos/dll/win32/dhcpcsvc/include/rosdhcp.h [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/dhcpcsvc/include/rosdhcp.h [iso-8859-1] Fri Jul 23 21:57:08
2010
@@ -18,9 +18,9 @@
 #undef IGNORE
 #undef ACCEPT
 #undef PREFER
-#define DHCP_DISCOVER_INTERVAL 15
-#define DHCP_REBOOT_TIMEOUT 300
-#define DHCP_PANIC_TIMEOUT DHCP_REBOOT_TIMEOUT * 3
+#define DHCP_DISCOVER_INTERVAL 5
+#define DHCP_REBOOT_TIMEOUT 10
+#define DHCP_PANIC_TIMEOUT 20
 #define DHCP_BACKOFF_MAX 300
 #define DHCP_DEFAULT_LEASE_TIME 43200 /* 12 hours */
 #define _PATH_DHCLIENT_PID
"\\systemroot\\system32\\drivers\\etc\\dhclient.pid"