+++ /dev/null
---- ppp/pppd/ipcp.c Wed May 31 17:20:41 2000
-+++ ppp/pppd/ipcp.c Wed May 31 17:27:19 2000
-@@ -145,7 +145,17 @@
- { "-defaultroute", o_bool, &ipcp_allowoptions[0].default_route,
- "disable defaultroute option", OPT_A2COPY,
- &ipcp_wantoptions[0].default_route },
-
-+#ifdef __linux__
-+ { "replacedefaultroute", o_bool,
-+ &ipcp_wantoptions[0].replace_default_route,
-+ "Replace default route", 1
-+ },
-+ { "noreplacedefaultroute", o_bool,
-+ &ipcp_allowoptions[0].replace_default_route,
-+ "Never replace default route", OPT_A2COPY,
-+ &ipcp_wantoptions[0].replace_default_route },
-+#endif
- { "proxyarp", o_bool, &ipcp_wantoptions[0].proxy_arp,
- "Add proxy ARP entry", OPT_ENABLE|1, &ipcp_allowoptions[0].proxy_arp },
- { "noproxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp,
-@@ -195,7 +205,7 @@
- ip_active_pkt
- };
-
--static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t));
-+static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t, bool));
- static void ipcp_script __P((char *)); /* Run an up/down script */
- static void ipcp_script_done __P((void *));
-
-@@ -1344,7 +1354,12 @@
- if (!sifnpmode(u, PPP_IP, NPMODE_QUEUE))
- return 0;
- if (wo->default_route)
-+#ifndef __linux__
- if (sifdefaultroute(u, wo->ouraddr, wo->hisaddr))
-+#else
-+ if (sifdefaultroute(u, wo->ouraddr, wo->hisaddr,
-+ wo->replace_default_route))
-+#endif
- default_route_set[u] = 1;
- if (wo->proxy_arp)
- if (sifproxyarp(u, wo->hisaddr))
-@@ -1420,7 +1435,8 @@
- */
- if (demand) {
- if (go->ouraddr != wo->ouraddr || ho->hisaddr != wo->hisaddr) {
-- ipcp_clear_addrs(f->unit, wo->ouraddr, wo->hisaddr);
-+ ipcp_clear_addrs(f->unit, wo->ouraddr, wo->hisaddr,
-+ wo->replace_default_route);
- if (go->ouraddr != wo->ouraddr) {
- warn("Local IP address changed to %I", go->ouraddr);
- script_setenv("OLDIPLOCAL", ip_ntoa(wo->ouraddr));
-@@ -1445,7 +1461,12 @@
-
- /* assign a default route through the interface if required */
- if (ipcp_wantoptions[f->unit].default_route)
-+#ifndef __linux__
- if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr))
-+#else
-+ if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr,
-+ wo->replace_default_route))
-+#endif
- default_route_set[f->unit] = 1;
-
- /* Make a proxy ARP entry if requested. */
-@@ -1492,7 +1513,12 @@
-
- /* assign a default route through the interface if required */
- if (ipcp_wantoptions[f->unit].default_route)
-+#ifndef __linux__
- if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr))
-+#else
-+ if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr,
-+ wo->replace_default_route))
-+#endif
- default_route_set[f->unit] = 1;
-
- /* Make a proxy ARP entry if requested. */
-@@ -1559,7 +1585,7 @@
- sifnpmode(f->unit, PPP_IP, NPMODE_DROP);
- sifdown(f->unit);
- ipcp_clear_addrs(f->unit, ipcp_gotoptions[f->unit].ouraddr,
-- ipcp_hisoptions[f->unit].hisaddr);
-+ ipcp_hisoptions[f->unit].hisaddr, 0);
- }
-
- /* Execute the ip-down script */
-@@ -1575,16 +1601,25 @@
- * proxy arp entries, etc.
- */
- static void
--ipcp_clear_addrs(unit, ouraddr, hisaddr)
-+ipcp_clear_addrs(unit, ouraddr, hisaddr, replacedefaultroute)
- int unit;
- u_int32_t ouraddr; /* local address */
- u_int32_t hisaddr; /* remote address */
-+ bool replacedefaultroute;
- {
- if (proxy_arp_set[unit]) {
- cifproxyarp(unit, hisaddr);
- proxy_arp_set[unit] = 0;
- }
-- if (default_route_set[unit]) {
-+ /* If replacedefaultroute, sifdefaultroute will be called soon
-+ * with replacedefaultroute set and that will overwrite the current
-+ * default route. This is the case only when doing demand, otherwise
-+ * during demand, this cifdefaultroute would restore the old default
-+ * route which is not what we want in this case. In the non-demand
-+ * case, we'll delete the default route and restore the old if there
-+ * is one saved by an sifdefaultroute with replacedefaultroute.
-+ */
-+ if (!replacedefaultroute && default_route_set[unit]) {
- cifdefaultroute(unit, ouraddr, hisaddr);
- default_route_set[unit] = 0;
- }
---- ppp/pppd/ipcp.h Wed May 31 17:20:41 2000
-+++ ppp/pppd/ipcp.h Wed May 31 15:56:17 2000
-@@ -47,6 +47,7 @@
- bool old_addrs; /* Use old (IP-Addresses) option? */
- bool req_addr; /* Ask peer to send IP address? */
- bool default_route; /* Assign default route through interface? */
-+ bool replace_default_route; /* Replace default route through interface? */
- bool proxy_arp; /* Make proxy ARP entry for peer? */
- bool neg_vj; /* Van Jacobson Compression? */
- bool old_vj; /* use old (short) form of VJ option? */
---- ppp/pppd/pppd.h Wed May 31 17:20:41 2000
-+++ ppp/pppd/pppd.h Wed May 31 15:56:17 2000
-@@ -416,7 +416,11 @@
- int cif6addr __P((int, eui64_t, eui64_t));
- /* Remove an IPv6 address from i/f */
- #endif
-+#ifndef __linux__
- int sifdefaultroute __P((int, u_int32_t, u_int32_t));
-+#else
-+int sifdefaultroute __P((int, u_int32_t, u_int32_t, bool replace_default_rt));
-+#endif
- /* Create default route through i/f */
- int cifdefaultroute __P((int, u_int32_t, u_int32_t));
- /* Delete default route through i/f */
---- ppp/pppd/sys-linux.c Wed May 31 17:20:41 2000
-+++ ppp/pppd/sys-linux.c Wed May 31 17:37:23 2000
-@@ -143,6 +143,8 @@
-
- static int if_is_up; /* Interface has been marked up */
- static u_int32_t default_route_gateway; /* Gateway for default route added */
-+static struct rtentry old_def_rt; /* Old default route */
-+static int default_rt_repl_rest; /* replace and restore old default rt */
- static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
- static char proxy_arp_dev[16]; /* Device for proxy arp entry */
- static u_int32_t our_old_addr; /* for detecting address changes */
-@@ -1209,6 +1211,9 @@
- p = NULL;
- }
-
-+ SET_SA_FAMILY (rt->rt_dst, AF_INET);
-+ SET_SA_FAMILY (rt->rt_gateway, AF_INET);
-+
- SIN_ADDR(rt->rt_dst) = strtoul(cols[route_dest_col], NULL, 16);
- SIN_ADDR(rt->rt_gateway) = strtoul(cols[route_gw_col], NULL, 16);
- SIN_ADDR(rt->rt_genmask) = strtoul(cols[route_mask_col], NULL, 16);
-@@ -1278,19 +1283,53 @@
- /********************************************************************
- *
- * sifdefaultroute - assign a default route through the address given.
-+ *
-+ * If the global default_rt_repl_rest flag is set, then this function
-+ * already replaced the original system defaultroute with some other
-+ * route and it should just replace the current defaultroute with
-+ * another one, without saving the current route. Use: demand mode,
-+ * when pppd sets first a defaultroute it it's temporary ppp0 addresses
-+ * and then changes the temporary addresses to the addresses for the real
-+ * ppp connection when it has come up.
- */
-
--int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway)
-+int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway, bool replace)
- {
-- struct rtentry rt;
--
-- if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) {
-- u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway);
-+ struct rtentry rt, tmp_rt;
-+ struct rtentry *del_rt = NULL;
-
-- if (old_gateway != gateway)
-- error("not replacing existing default route to %s [%I]",
-- rt.rt_dev, old_gateway);
-- return 0;
-+
-+ if (default_rt_repl_rest) {
-+ /* We have already reclaced the original defaultroute, if we
-+ * are called again, we will delete the current default route
-+ * and set the new default route in this function.
-+ * - this is normally only the case the doing demand: */
-+ if (defaultroute_exists( &tmp_rt ))
-+ del_rt = &tmp_rt;
-+ } else if ( defaultroute_exists( &old_def_rt ) &&
-+ strcmp( old_def_rt.rt_dev, ifname ) != 0) {
-+ /* We did not yet replace an existing default route, let's
-+ * check if we should save and replace a default route:
-+ */
-+ u_int32_t old_gateway = SIN_ADDR(old_def_rt.rt_gateway);
-+
-+ if (old_gateway != gateway) {
-+ if (!replace) {
-+ error("not replacing default route to %s [%I]",
-+ old_def_rt.rt_dev, old_gateway);
-+ return 0;
-+ } else {
-+ // we need to copy rt_dev because we need it permanent too:
-+ char * tmp_dev = malloc(strlen(old_def_rt.rt_dev)+1);
-+ strcpy(tmp_dev, old_def_rt.rt_dev);
-+ old_def_rt.rt_dev = tmp_dev;
-+
-+ notice("replacing old default route to %s [%I]",
-+ old_def_rt.rt_dev, old_gateway);
-+ default_rt_repl_rest = 1;
-+ del_rt = &old_def_rt;
-+ }
-+ }
- }
-
- memset (&rt, '\0', sizeof (rt));
-@@ -1310,6 +1349,12 @@
- error("default route ioctl(SIOCADDRT): %m(%d)", errno);
- return 0;
- }
-+ if (default_rt_repl_rest && del_rt)
-+ if (ioctl(sock_fd, SIOCDELRT, del_rt) < 0) {
-+ if ( ! ok_error ( errno ))
-+ error("del old default route ioctl(SIOCDELRT): %m(%d)", errno);
-+ return 0;
-+ }
-
- default_route_gateway = gateway;
- return 1;
-@@ -1344,6 +1389,16 @@
- error("default route ioctl(SIOCDELRT): %m (%d)", errno);
- return 0;
- }
-+ }
-+ if (default_rt_repl_rest) {
-+ notice("restoring old default route to %s [%I]",
-+ old_def_rt.rt_dev, SIN_ADDR(old_def_rt.rt_gateway));
-+ if (ioctl(sock_fd, SIOCADDRT, &old_def_rt) < 0) {
-+ if ( ! ok_error ( errno ))
-+ error("restore default route ioctl(SIOCADDRT): %m(%d)", errno);
-+ return 0;
-+ }
-+ default_rt_repl_rest = 0;
- }
-
- return 1;
projects / openwrt / openwrt.git / blobdiff