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-rw-r--r--meta/packages/ppp/ppp-2.4.3/cifdefroute.patch286
1 files changed, 286 insertions, 0 deletions
diff --git a/meta/packages/ppp/ppp-2.4.3/cifdefroute.patch b/meta/packages/ppp/ppp-2.4.3/cifdefroute.patch
new file mode 100644
index 0000000000..d61b920c50
--- /dev/null
+++ b/meta/packages/ppp/ppp-2.4.3/cifdefroute.patch
@@ -0,0 +1,286 @@
1
2#
3# Patch managed by http://www.holgerschurig.de/patcher.html
4#
5
6--- ppp-2.4.3/pppd/ipcp.c~cifdefroute.patch
7+++ ppp-2.4.3/pppd/ipcp.c
8@@ -197,6 +197,16 @@
9 "disable defaultroute option", OPT_ALIAS | OPT_A2CLR,
10 &ipcp_wantoptions[0].default_route },
11
12+#ifdef __linux__
13+ { "replacedefaultroute", o_bool,
14+ &ipcp_wantoptions[0].replace_default_route,
15+ "Replace default route", 1
16+ },
17+ { "noreplacedefaultroute", o_bool,
18+ &ipcp_allowoptions[0].replace_default_route,
19+ "Never replace default route", OPT_A2COPY,
20+ &ipcp_wantoptions[0].replace_default_route },
21+#endif
22 { "proxyarp", o_bool, &ipcp_wantoptions[0].proxy_arp,
23 "Add proxy ARP entry", OPT_ENABLE|1, &ipcp_allowoptions[0].proxy_arp },
24 { "noproxyarp", o_bool, &ipcp_allowoptions[0].proxy_arp,
25@@ -263,7 +273,7 @@
26 ip_active_pkt
27 };
28
29-static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t));
30+static void ipcp_clear_addrs __P((int, u_int32_t, u_int32_t, bool));
31 static void ipcp_script __P((char *)); /* Run an up/down script */
32 static void ipcp_script_done __P((void *));
33
34@@ -1659,7 +1669,12 @@
35 if (!sifnpmode(u, PPP_IP, NPMODE_QUEUE))
36 return 0;
37 if (wo->default_route)
38+#ifndef __linux__
39 if (sifdefaultroute(u, wo->ouraddr, wo->hisaddr))
40+#else
41+ if (sifdefaultroute(u, wo->ouraddr, wo->hisaddr,
42+ wo->replace_default_route))
43+#endif
44 default_route_set[u] = 1;
45 if (wo->proxy_arp)
46 if (sifproxyarp(u, wo->hisaddr))
47@@ -1741,7 +1756,8 @@
48 */
49 if (demand) {
50 if (go->ouraddr != wo->ouraddr || ho->hisaddr != wo->hisaddr) {
51- ipcp_clear_addrs(f->unit, wo->ouraddr, wo->hisaddr);
52+ ipcp_clear_addrs(f->unit, wo->ouraddr, wo->hisaddr,
53+ wo->replace_default_route);
54 if (go->ouraddr != wo->ouraddr) {
55 warn("Local IP address changed to %I", go->ouraddr);
56 script_setenv("OLDIPLOCAL", ip_ntoa(wo->ouraddr), 0);
57@@ -1766,7 +1782,12 @@
58
59 /* assign a default route through the interface if required */
60 if (ipcp_wantoptions[f->unit].default_route)
61+#ifndef __linux__
62 if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr))
63+#else
64+ if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr,
65+ wo->replace_default_route))
66+#endif
67 default_route_set[f->unit] = 1;
68
69 /* Make a proxy ARP entry if requested. */
70@@ -1813,7 +1834,12 @@
71
72 /* assign a default route through the interface if required */
73 if (ipcp_wantoptions[f->unit].default_route)
74+#ifndef __linux__
75 if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr))
76+#else
77+ if (sifdefaultroute(f->unit, go->ouraddr, ho->hisaddr,
78+ wo->replace_default_route))
79+#endif
80 default_route_set[f->unit] = 1;
81
82 /* Make a proxy ARP entry if requested. */
83@@ -1890,7 +1916,7 @@
84 sifnpmode(f->unit, PPP_IP, NPMODE_DROP);
85 sifdown(f->unit);
86 ipcp_clear_addrs(f->unit, ipcp_gotoptions[f->unit].ouraddr,
87- ipcp_hisoptions[f->unit].hisaddr);
88+ ipcp_hisoptions[f->unit].hisaddr, 0);
89 }
90
91 /* Execute the ip-down script */
92@@ -1906,16 +1932,25 @@
93 * proxy arp entries, etc.
94 */
95 static void
96-ipcp_clear_addrs(unit, ouraddr, hisaddr)
97+ipcp_clear_addrs(unit, ouraddr, hisaddr, replacedefaultroute)
98 int unit;
99 u_int32_t ouraddr; /* local address */
100 u_int32_t hisaddr; /* remote address */
101+ bool replacedefaultroute;
102 {
103 if (proxy_arp_set[unit]) {
104 cifproxyarp(unit, hisaddr);
105 proxy_arp_set[unit] = 0;
106 }
107- if (default_route_set[unit]) {
108+ /* If replacedefaultroute, sifdefaultroute will be called soon
109+ * with replacedefaultroute set and that will overwrite the current
110+ * default route. This is the case only when doing demand, otherwise
111+ * during demand, this cifdefaultroute would restore the old default
112+ * route which is not what we want in this case. In the non-demand
113+ * case, we'll delete the default route and restore the old if there
114+ * is one saved by an sifdefaultroute with replacedefaultroute.
115+ */
116+ if (!replacedefaultroute && default_route_set[unit]) {
117 cifdefaultroute(unit, ouraddr, hisaddr);
118 default_route_set[unit] = 0;
119 }
120--- ppp-2.4.3/pppd/ipcp.h~cifdefroute.patch
121+++ ppp-2.4.3/pppd/ipcp.h
122@@ -70,6 +70,7 @@
123 bool old_addrs; /* Use old (IP-Addresses) option? */
124 bool req_addr; /* Ask peer to send IP address? */
125 bool default_route; /* Assign default route through interface? */
126+ bool replace_default_route; /* Replace default route through interface? */
127 bool proxy_arp; /* Make proxy ARP entry for peer? */
128 bool neg_vj; /* Van Jacobson Compression? */
129 bool old_vj; /* use old (short) form of VJ option? */
130--- ppp-2.4.3/pppd/pppd.8~cifdefroute.patch
131+++ ppp-2.4.3/pppd/pppd.8
132@@ -120,6 +120,13 @@
133 This entry is removed when the PPP connection is broken. This option
134 is privileged if the \fInodefaultroute\fR option has been specified.
135 .TP
136+.B replacedefaultroute
137+This option is a flag to the defaultroute option. If defaultroute is
138+set and this flag is also set, pppd replaces an existing default route
139+with the new default route.
140+
141+
142+.TP
143 .B disconnect \fIscript
144 Execute the command specified by \fIscript\fR, by passing it to a
145 shell, after
146@@ -701,7 +708,12 @@
147 .TP
148 .B nodefaultroute
149 Disable the \fIdefaultroute\fR option. The system administrator who
150-wishes to prevent users from creating default routes with pppd
151+wishes to prevent users from adding a default route with pppd
152+can do so by placing this option in the /etc/ppp/options file.
153+.TP
154+.B noreplacedefaultroute
155+Disable the \fIreplacedefaultroute\fR option. The system administrator who
156+wishes to prevent users from replacing a default route with pppd
157 can do so by placing this option in the /etc/ppp/options file.
158 .TP
159 .B nodeflate
160--- ppp-2.4.3/pppd/pppd.h~cifdefroute.patch
161+++ ppp-2.4.3/pppd/pppd.h
162@@ -640,7 +640,11 @@
163 int cif6addr __P((int, eui64_t, eui64_t));
164 /* Remove an IPv6 address from i/f */
165 #endif
166+#ifndef __linux__
167 int sifdefaultroute __P((int, u_int32_t, u_int32_t));
168+#else
169+int sifdefaultroute __P((int, u_int32_t, u_int32_t, bool replace_default_rt));
170+#endif
171 /* Create default route through i/f */
172 int cifdefaultroute __P((int, u_int32_t, u_int32_t));
173 /* Delete default route through i/f */
174--- ppp-2.4.3/pppd/sys-linux.c~cifdefroute.patch
175+++ ppp-2.4.3/pppd/sys-linux.c
176@@ -206,6 +206,8 @@
177
178 static int if_is_up; /* Interface has been marked up */
179 static u_int32_t default_route_gateway; /* Gateway for default route added */
180+static struct rtentry old_def_rt; /* Old default route */
181+static int default_rt_repl_rest; /* replace and restore old default rt */
182 static u_int32_t proxy_arp_addr; /* Addr for proxy arp entry added */
183 static char proxy_arp_dev[16]; /* Device for proxy arp entry */
184 static u_int32_t our_old_addr; /* for detecting address changes */
185@@ -1513,6 +1515,9 @@
186 p = NULL;
187 }
188
189+ SET_SA_FAMILY (rt->rt_dst, AF_INET);
190+ SET_SA_FAMILY (rt->rt_gateway, AF_INET);
191+
192 SIN_ADDR(rt->rt_dst) = strtoul(cols[route_dest_col], NULL, 16);
193 SIN_ADDR(rt->rt_gateway) = strtoul(cols[route_gw_col], NULL, 16);
194 SIN_ADDR(rt->rt_genmask) = strtoul(cols[route_mask_col], NULL, 16);
195@@ -1582,19 +1587,53 @@
196 /********************************************************************
197 *
198 * sifdefaultroute - assign a default route through the address given.
199+ *
200+ * If the global default_rt_repl_rest flag is set, then this function
201+ * already replaced the original system defaultroute with some other
202+ * route and it should just replace the current defaultroute with
203+ * another one, without saving the current route. Use: demand mode,
204+ * when pppd sets first a defaultroute it it's temporary ppp0 addresses
205+ * and then changes the temporary addresses to the addresses for the real
206+ * ppp connection when it has come up.
207 */
208
209-int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway)
210+int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway, bool replace)
211 {
212- struct rtentry rt;
213+ struct rtentry rt, tmp_rt;
214+ struct rtentry *del_rt = NULL;
215
216- if (defaultroute_exists(&rt) && strcmp(rt.rt_dev, ifname) != 0) {
217- u_int32_t old_gateway = SIN_ADDR(rt.rt_gateway);
218+
219+ if (default_rt_repl_rest) {
220+ /* We have already reclaced the original defaultroute, if we
221+ * are called again, we will delete the current default route
222+ * and set the new default route in this function.
223+ * - this is normally only the case the doing demand: */
224+ if (defaultroute_exists( &tmp_rt ))
225+ del_rt = &tmp_rt;
226+ } else if ( defaultroute_exists( &old_def_rt ) &&
227+ strcmp( old_def_rt.rt_dev, ifname ) != 0) {
228+ /* We did not yet replace an existing default route, let's
229+ * check if we should save and replace a default route:
230+ */
231+ u_int32_t old_gateway = SIN_ADDR(old_def_rt.rt_gateway);
232
233- if (old_gateway != gateway)
234- error("not replacing existing default route to %s [%I]",
235- rt.rt_dev, old_gateway);
236- return 0;
237+ if (old_gateway != gateway) {
238+ if (!replace) {
239+ error("not replacing default route to %s [%I]",
240+ old_def_rt.rt_dev, old_gateway);
241+ return 0;
242+ } else {
243+ // we need to copy rt_dev because we need it permanent too:
244+ char * tmp_dev = malloc(strlen(old_def_rt.rt_dev)+1);
245+ strcpy(tmp_dev, old_def_rt.rt_dev);
246+ old_def_rt.rt_dev = tmp_dev;
247+
248+ notice("replacing old default route to %s [%I]",
249+ old_def_rt.rt_dev, old_gateway);
250+ default_rt_repl_rest = 1;
251+ del_rt = &old_def_rt;
252+ }
253+ }
254 }
255
256 memset (&rt, '\0', sizeof (rt));
257@@ -1616,6 +1655,12 @@
258 error("default route ioctl(SIOCADDRT): %m");
259 return 0;
260 }
261+ if (default_rt_repl_rest && del_rt)
262+ if (ioctl(sock_fd, SIOCDELRT, del_rt) < 0) {
263+ if ( ! ok_error ( errno ))
264+ error("del old default route ioctl(SIOCDELRT): %m(%d)", errno);
265+ return 0;
266+ }
267
268 default_route_gateway = gateway;
269 return 1;
270@@ -1651,6 +1696,16 @@
271 return 0;
272 }
273 }
274+ if (default_rt_repl_rest) {
275+ notice("restoring old default route to %s [%I]",
276+ old_def_rt.rt_dev, SIN_ADDR(old_def_rt.rt_gateway));
277+ if (ioctl(sock_fd, SIOCADDRT, &old_def_rt) < 0) {
278+ if ( ! ok_error ( errno ))
279+ error("restore default route ioctl(SIOCADDRT): %m(%d)", errno);
280+ return 0;
281+ }
282+ default_rt_repl_rest = 0;
283+ }
284
285 return 1;
286 }
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2026-04-22 22:11:03 +0000