diff options
Diffstat (limited to 'obsolete-buildroot/sources/openwrt/patches/ppp/cifdefroute.dif')
| -rw-r--r-- | obsolete-buildroot/sources/openwrt/patches/ppp/cifdefroute.dif | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/obsolete-buildroot/sources/openwrt/patches/ppp/cifdefroute.dif b/obsolete-buildroot/sources/openwrt/patches/ppp/cifdefroute.dif new file mode 100644 index 000000000..263b674f9 --- /dev/null +++ b/obsolete-buildroot/sources/openwrt/patches/ppp/cifdefroute.dif @@ -0,0 +1,283 @@ +--- 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.8 Wed May 31 17:20:41 2000 ++++ ppp/pppd/pppd.8 Wed May 31 15:56:17 2000 +@@ -99,6 +99,13 @@ + This entry is removed when the PPP connection is broken. This option + is privileged if the \fInodefaultroute\fR option has been specified. + .TP ++.B replacedefaultroute ++This option is a flag to the defaultroute option. If defaultroute is ++set and this flag is also set, pppd replaces an existing default route ++with the new default route. ++ ++ ++.TP + .B disconnect \fIscript + Run the executable or shell command specified by \fIscript\fR after + pppd has terminated the link. This script could, for example, issue +@@ -589,7 +596,12 @@ + .TP + .B nodefaultroute + Disable the \fIdefaultroute\fR option. The system administrator who +-wishes to prevent users from creating default routes with pppd ++wishes to prevent users from adding a default route with pppd ++can do so by placing this option in the /etc/ppp/options file. ++.TP ++.B noreplacedefaultroute ++Disable the \fIreplacedefaultroute\fR option. The system administrator who ++wishes to prevent users from replacing a default route with pppd + can do so by placing this option in the /etc/ppp/options file. + .TP + .B nodeflate +--- 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; |