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3G Modem: Add support for ZTE MF195
[tomato.git] / release / src / router / rc / wan.c
blob0845cdfaa1969adabff1344f7e8fd7bba0b6c341
1 /*
2
3 Copyright 2003, CyberTAN Inc. All Rights Reserved
4
5 This is UNPUBLISHED PROPRIETARY SOURCE CODE of CyberTAN Inc.
6 the contents of this file may not be disclosed to third parties,
7 copied or duplicated in any form without the prior written
8 permission of CyberTAN Inc.
9
10 This software should be used as a reference only, and it not
11 intended for production use!
12
13 THIS SOFTWARE IS OFFERED "AS IS", AND CYBERTAN GRANTS NO WARRANTIES OF ANY
14 KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. CYBERTAN
15 SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
16 FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE
17
18 */
19 /*
20
21 Copyright 2005, Broadcom Corporation
22 All Rights Reserved.
23
24 THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
25 KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
26 SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
27 FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
28
29 */
30 /*
31
32 Modified for Tomato Firmware
33 Portions, Copyright (C) 2006-2009 Jonathan Zarate
34
35 */
36
37 #include "rc.h"
38
39 #include <sys/ioctl.h>
40 #include <arpa/inet.h>
41 #include <sys/sysinfo.h>
42 #include <time.h>
43 #include <bcmdevs.h>
44
45 static const char ppp_linkfile[] = "/tmp/ppp/link";
46 static const char ppp_optfile[] = "/tmp/ppp/wanoptions";
47 #ifdef LINUX26
48 #ifdef TCONFIG_USB
49 static const char ppp3g_chatfile[] = "/tmp/ppp/connect.chat";
50 #endif
51 #endif
52
53 static void make_secrets(void)
54 {
55 FILE *f;
56 char *user;
57 char *pass;
58
59 user = nvram_safe_get("ppp_username");
60 pass = nvram_safe_get("ppp_passwd");
61 if ((f = fopen("/tmp/ppp/pap-secrets", "w")) != NULL) {
62 fprintf(f, "\"%s\" * \"%s\" *\n", user, pass);
63 fclose(f);
64 }
65 chmod("/tmp/ppp/pap-secrets", 0600);
66
67 if ((f = fopen("/tmp/ppp/chap-secrets", "w")) != NULL) {
68 fprintf(f, "\"%s\" * \"%s\" *\n", user, pass);
69 fclose(f);
70 }
71 chmod("/tmp/ppp/chap-secrets", 0600);
72 }
73
74 // -----------------------------------------------------------------------------
75
76 static int config_pppd(int wan_proto, int num)
77 {
78 TRACE_PT("begin\n");
79
80 FILE *fp;
81 FILE *cfp;
82 char *p;
83 int demand;
84
85 mkdir("/tmp/ppp", 0777);
86 symlink("/sbin/rc", "/tmp/ppp/ip-up");
87 symlink("/sbin/rc", "/tmp/ppp/ip-down");
88 #ifdef TCONFIG_IPV6
89 symlink("/sbin/rc", "/tmp/ppp/ipv6-up");
90 symlink("/sbin/rc", "/tmp/ppp/ipv6-down");
91 #endif
92 symlink("/dev/null", "/tmp/ppp/connect-errors");
93
94 demand = nvram_get_int("ppp_demand");
95
96 // Generate options file
97 if ((fp = fopen(ppp_optfile, "w")) == NULL) {
98 perror(ppp_optfile);
99 return -1;
100 }
101
102 #ifdef LINUX26
103 #ifdef TCONFIG_USB
104 if (nvram_match("wan_proto", "ppp3g") ) {
105 fprintf(fp,
106 "/dev/%s\n"
107 "460800\n"
108 "connect \"/usr/sbin/chat -V -t 60 -f %s\"\n"
109 "noipdefault\n"
110 "lock\n"
111 "crtscts\n"
112 "modem\n"
113 "ipcp-accept-local\n",
114 nvram_safe_get("modem_dev"),
115 ppp3g_chatfile);
116
117 if (strlen(nvram_get("ppp_username")) >0 )
118 fprintf(fp, "user '%s'\n", nvram_get("ppp_username"));
119 } else {
120 #endif
121 #endif
122 fprintf(fp,
123 "unit %d\n"
124 "user '%s'\n"
125 "lcp-echo-adaptive\n", // Suppress LCP echo-requests if traffic was received
126 num,
127 nvram_safe_get("ppp_username"));
128 #ifdef LINUX26
129 #ifdef TCONFIG_USB
130 }
131 #endif
132 #endif
133
134 fprintf(fp,
135 "defaultroute\n" // Add a default route to the system routing tables, using the peer as the gateway
136 "usepeerdns\n" // Ask the peer for up to 2 DNS server addresses
137 "default-asyncmap\n" // Disable asyncmap negotiation
138 "novj\n" // Disable Van Jacobson style TCP/IP header compression
139 "nobsdcomp\n" // Disable BSD-Compress compression
140 "nodeflate\n" // Disable Deflate compression
141 "noauth\n" // Do not authenticate peer
142 "refuse-eap\n" // Do not use eap
143 "maxfail 0\n" // Never give up
144 "lcp-echo-interval %d\n"// Interval between LCP echo-requests
145 "lcp-echo-failure %d\n" // Tolerance to unanswered echo-requests
146 "%s", // Debug
147 nvram_get_int("pppoe_lei") ? : 10,
148 nvram_get_int("pppoe_lef") ? : 5,
149 nvram_get_int("debug_ppp") ? "debug\n" : "");
150
151 #ifdef LINUX26
152 #ifdef TCONFIG_USB
153 if (nvram_match("wan_proto", "ppp3g") && nvram_match("modem_dev", "ttyACM0") ) {
154 //don`t write nopcomp and noaccomp options
155 } else {
156 #endif
157 #endif
158 fprintf(fp,
159 "nopcomp\n" // Disable protocol field compression
160 "noaccomp\n" // Disable Address/Control compression
161 );
162 #ifdef LINUX26
163 #ifdef TCONFIG_USB
164 }
165 #endif
166 #endif
167
168
169 if (wan_proto != WP_L2TP) {
170 fprintf(fp,
171 "persist\n"
172 "holdoff %d\n",
173 demand ? 30 : (nvram_get_int("ppp_redialperiod") ? : 30));
174 }
175
176 switch (wan_proto) {
177 case WP_PPTP:
178 fprintf(fp,
179 "plugin pptp.so\n"
180 "pptp_server %s\n"
181 "nomppe-stateful\n"
182 "mtu %d\n",
183 nvram_safe_get("pptp_server_ip"),
184 nvram_get_int("mtu_enable") ? nvram_get_int("wan_mtu") : 1400);
185 break;
186 case WP_PPPOE:
187 fprintf(fp,
188 "password '%s'\n"
189 "plugin rp-pppoe.so\n"
190 "nomppe nomppc\n"
191 "nic-%s\n"
192 "mru %d mtu %d\n",
193 nvram_safe_get("ppp_passwd"),
194 nvram_safe_get("wan_ifname"),
195 nvram_get_int("wan_mtu"), nvram_get_int("wan_mtu"));
196 if (((p = nvram_get("ppp_service")) != NULL) && (*p)) {
197 fprintf(fp, "rp_pppoe_service '%s'\n", p);
198 }
199 if (((p = nvram_get("ppp_ac")) != NULL) && (*p)) {
200 fprintf(fp, "rp_pppoe_ac '%s'\n", p);
201 }
202 if (nvram_match("ppp_mlppp", "1")) {
203 fprintf(fp, "mp\n");
204 }
205
206 break;
207 #ifdef LINUX26
208 #ifdef TCONFIG_USB
209 case WP_PPP3G:
210 if ((cfp = fopen(ppp3g_chatfile, "w")) == NULL) {
211 perror(ppp3g_chatfile);
212 return -1;
213 }
214 fprintf(cfp,
215 "ABORT \"NO CARRIER\"\n"
216 "ABORT \"NO DIALTONE\"\n"
217 "ABORT \"NO ERROR\"\n"
218 "ABORT \"NO ANSWER\"\n"
219 "ABORT \"BUSY\"\n"
220 "REPORT CONNECT\n"
221 "\"\" \"AT\"\n");
222 /* moved to switch3g script
223 if (strlen(nvram_get("modem_pin")) >0 ) {
224 fprintf(cfp,
225 "TIMEOUT 60\n"
226 "OK \"AT+CPIN=%s\"\n"
227 "TIMEOUT 10\n",
228 nvram_get("modem_pin"));
229 }
230 */
231 fprintf(cfp,
232 "OK \"AT&FE0V1X1&D2&C1S0=0\"\n"
233 "OK \"AT\"\n"
234 "OK \"ATS0=0\"\n"
235 "OK \"AT\"\n"
236 "OK \"AT&FE0V1X1&D2&C1S0=0\"\n"
237 "OK \"AT\"\n"
238 "OK 'AT+CGDCONT=1,\"IP\",\"%s\"'\n"
239 "OK \"ATDT%s\"\n"
240 "CONNECT \c\n",
241 nvram_safe_get("modem_apn"),
242 nvram_safe_get("modem_init")
243 );
244 fclose(cfp);
245
246
247 if (nvram_match("usb_3g", "1")) {
248 // clear old gateway
249 if (strlen(nvram_get("wan_gateway")) >0 ) {
250 nvram_set("wan_gateway", "");
251 }
252
253 // detect 3G Modem
254 xstart("switch3g");
255 }
256 break;
257 #endif
258 #endif
259 case WP_L2TP:
260 fprintf(fp, "nomppe nomppc\n");
261 if (nvram_get_int("mtu_enable"))
262 fprintf(fp, "mtu %d\n", nvram_get_int("wan_mtu"));
263 break;
264 }
265
266 if (demand) {
267 // demand mode
268 fprintf(fp,
269 "demand\n" // Dial on demand
270 "idle %d\n"
271 "ipcp-accept-remote\n"
272 "ipcp-accept-local\n"
273 "noipdefault\n" // Disables the default behaviour when no local IP address is specified
274 "ktune\n", // Set /proc/sys/net/ipv4/ip_dynaddr to 1 in demand mode if the local address changes
275 nvram_get_int("ppp_idletime") * 60);
276 }
277
278 #ifdef TCONFIG_IPV6
279 switch (get_ipv6_service()) {
280 case IPV6_NATIVE:
281 case IPV6_NATIVE_DHCP:
282 fprintf(fp, "+ipv6\n");
283 break;
284 }
285 #endif
286 // User specific options
287 fprintf(fp, "%s\n", nvram_safe_get("ppp_custom"));
288
289 fclose(fp);
290 make_secrets();
291
292 TRACE_PT("end\n");
293 return 0;
294 }
295
296 static void stop_ppp(void)
297 {
298 TRACE_PT("begin\n");
299
300 unlink(ppp_linkfile);
301
302 killall_tk("ip-up");
303 killall_tk("ip-down");
304 #ifdef TCONFIG_IPV6
305 killall_tk("ipv6-up");
306 killall_tk("ipv6-down");
307 #endif
308 killall_tk("xl2tpd");
309 killall_tk("pppd");
310 killall_tk("listen");
311
312 TRACE_PT("end\n");
313 }
314
315 static void run_pppd(void)
316 {
317 eval("pppd", "file", ppp_optfile);
318
319 if (nvram_get_int("ppp_demand")) {
320 // demand mode
321 /*
322 Fixed issue id 7887(or 7787):
323 When DUT is PPTP Connect on Demand mode, it couldn't be trigger from LAN.
324 */
325 stop_dnsmasq();
326 dns_to_resolv();
327 start_dnsmasq();
328
329 // Trigger Connect On Demand if user ping pptp server
330 eval("listen", nvram_safe_get("lan_ifname"));
331 }
332 else {
333 // keepalive mode
334 start_redial();
335 }
336 }
337
338 // -----------------------------------------------------------------------------
339
340 inline void stop_pptp(void)
341 {
342 stop_ppp();
343 }
344
345 void start_pptp(int mode)
346 {
347 TRACE_PT("begin\n");
348
349 if (!using_dhcpc()) stop_dhcpc();
350 stop_pptp();
351
352 if (config_pppd(WP_PPTP, 0) != 0)
353 return;
354
355 run_pppd();
356
357 TRACE_PT("end\n");
358 }
359
360 // -----------------------------------------------------------------------------
361
362 void preset_wan(char *ifname, char *gw, char *netmask)
363 {
364 int i;
365
366 /* Delete all default routes */
367 route_del(ifname, 0, NULL, NULL, NULL);
368
369 /* try adding a route to gateway first */
370 route_add(ifname, 0, gw, NULL, "255.255.255.255");
371
372 /* Set default route to gateway if specified */
373 i = 5;
374 while ((route_add(ifname, 1, "0.0.0.0", gw, "0.0.0.0") == 1) && (i--)) {
375 sleep(1);
376 }
377 _dprintf("set default gateway=%s n=%d\n", gw, i);
378
379 /* Add routes to dns servers as well for demand ppp to work */
380 char word[100], *next;
381 in_addr_t mask = inet_addr(netmask);
382 foreach(word, nvram_safe_get("wan_get_dns"), next) {
383 if ((inet_addr(word) & mask) != (inet_addr(nvram_safe_get("wan_ipaddr")) & mask))
384 route_add(ifname, 0, word, gw, "255.255.255.255");
385 }
386
387 dns_to_resolv();
388 start_dnsmasq();
389 sleep(1);
390 start_firewall();
391 }
392
393 // -----------------------------------------------------------------------------
394
395
396 // Get the IP, Subnetmask, Geteway from WAN interface and set nvram
397 static void start_tmp_ppp(int num, char *ifname)
398 {
399 int timeout;
400 struct ifreq ifr;
401 int s;
402
403 TRACE_PT("begin: num=%d\n", num);
404
405 if (num != 0) return;
406
407 // Wait for ppp0 to be created
408 timeout = 15;
409 while ((ifconfig(ifname, IFUP, NULL, NULL) != 0) && (timeout-- > 0)) {
410 sleep(1);
411 _dprintf("[%d] waiting for %s %d...\n", __LINE__, ifname, timeout);
412 }
413
414 if ((s = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) return;
415 strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
416
417 // Set temporary IP address
418 timeout = 3;
419 while (ioctl(s, SIOCGIFADDR, &ifr) && timeout--){
420 _dprintf("[%d] waiting for %s...\n", __LINE__, ifname);
421 sleep(1);
422 };
423 nvram_set("wan_ipaddr", inet_ntoa(sin_addr(&(ifr.ifr_addr))));
424 nvram_set("wan_netmask", "255.255.255.255");
425
426 // Set temporary P-t-P address
427 timeout = 3;
428 while (ioctl(s, SIOCGIFDSTADDR, &ifr) && timeout--){
429 _dprintf("[%d] waiting for %s...\n", __LINE__, ifname);
430 sleep(1);
431 }
432 nvram_set("wan_gateway", inet_ntoa(sin_addr(&(ifr.ifr_dstaddr))));
433
434 close(s);
435
436 start_wan_done(ifname);
437 TRACE_PT("end\n");
438 }
439
440 void start_pppoe(int num)
441 {
442 char ifname[8];
443
444 TRACE_PT("begin pppoe_num=%d\n", num);
445
446 if (num != 0) return;
447
448 stop_pppoe();
449
450 snprintf(ifname, sizeof(ifname), "ppp%d", num);
451
452 #ifdef LINUX26
453 #ifdef TCONFIG_USB
454 if (nvram_match( "wan_proto", "ppp3g") ) {
455 if (config_pppd(WP_PPP3G, num) != 0)
456 return;
457 } else {
458 #endif
459 #endif
460 if (config_pppd(WP_PPPOE, num) != 0)
461 return;
462 #ifdef LINUX26
463 #ifdef TCONFIG_USB
464 }
465 #endif
466 #endif
467 run_pppd();
468
469 if (nvram_get_int("ppp_demand"))
470 start_tmp_ppp(num, ifname);
471 else
472 ifconfig(ifname, IFUP, NULL, NULL);
473
474 TRACE_PT("end\n");
475 }
476
477 void stop_pppoe(void)
478 {
479 stop_ppp();
480
481
482 }
483
484 #if 0
485 void stop_singe_pppoe(int num)
486 {
487 _dprintf("%s pppoe_num=%d\n", __FUNCTION__, num);
488
489 int i;
490
491 if (num != 0) return;
492
493 i = nvram_get_int("pppoe_pid0");
494 if ((i > 1) && (kill(i, SIGTERM) == 0)) {
495 do {
496 sleep(2);
497 } while (kill(i, SIGKILL) == 0);
498 }
499
500 unlink(ppp_linkfile);
501 nvram_unset("pppoe_ifname0");
502
503 nvram_set("wan_get_dns", "");
504 clear_resolv();
505 }
506 #endif
507
508 // -----------------------------------------------------------------------------
509
510 inline void stop_l2tp(void)
511 {
512 stop_ppp();
513 }
514
515 void start_l2tp(void)
516 {
517 TRACE_PT("begin\n");
518
519 FILE *fp;
520 int demand;
521
522 stop_l2tp();
523
524 if (config_pppd(WP_L2TP, 0) != 0)
525 return;
526
527 demand = nvram_get_int("ppp_demand");
528
529 /* Generate XL2TPD configuration file */
530 if ((fp = fopen("/etc/xl2tpd.conf", "w")) == NULL)
531 return;
532 fprintf(fp,
533 "[global]\n"
534 "access control = no\n"
535 "port = 1701\n"
536 "[lac l2tp]\n"
537 "lns = %s\n"
538 "tx bps = 100000000\n"
539 "pppoptfile = %s\n"
540 "redial = yes\n"
541 "max redials = 32767\n"
542 "redial timeout = %d\n"
543 "ppp debug = %s\n",
544 nvram_safe_get("l2tp_server_ip"),
545 ppp_optfile,
546 demand ? 30 : (nvram_get_int("ppp_redialperiod") ? : 30),
547 nvram_get_int("debug_ppp") ? "yes" : "no");
548 fclose(fp);
549
550 enable_ip_forward();
551
552 eval("xl2tpd");
553
554 if (demand) {
555 eval("listen", nvram_safe_get("lan_ifname"));
556 }
557 else {
558 force_to_dial();
559 start_redial();
560 }
561
562 TRACE_PT("end\n");
563 }
564
565 // -----------------------------------------------------------------------------
566
567 char *wan_gateway(void)
568 {
569 char *gw = nvram_safe_get("wan_gateway_get");
570 if ((*gw == 0) || (strcmp(gw, "0.0.0.0") == 0))
571 gw = nvram_safe_get("wan_gateway");
572 return gw;
573 }
574
575 // -----------------------------------------------------------------------------
576
577 // trigger connect on demand
578 void force_to_dial(void)
579 {
580 TRACE_PT("begin\n");
581
582 sleep(1);
583 switch (get_wan_proto()) {
584 case WP_L2TP:
585 f_write_string("/var/run/l2tp-control", "c l2tp", 0, 0);
586 break;
587 case WP_PPTP:
588 eval("ping", "-c", "2", "10.112.112.112");
589 break;
590 case WP_DISABLED:
591 case WP_STATIC:
592 break;
593 default:
594 eval("ping", "-c", "2", wan_gateway());
595 break;
596 }
597
598 TRACE_PT("end\n");
599 }
600
601 // -----------------------------------------------------------------------------
602
603 static void _do_wan_routes(char *ifname, char *nvname, int metric, int add)
604 {
605 char *routes, *tmp;
606 int bits;
607 struct in_addr mask;
608 char netmask[16];
609
610 // IP[/MASK] ROUTER IP2[/MASK2] ROUTER2 ...
611 tmp = routes = strdup(nvram_safe_get(nvname));
612 while (tmp && *tmp) {
613 char *ipaddr, *gateway, *nmask;
614
615 ipaddr = nmask = strsep(&tmp, " ");
616 strcpy(netmask, "255.255.255.255");
617
618 if (nmask) {
619 ipaddr = strsep(&nmask, "/");
620 if (nmask && *nmask) {
621 bits = strtol(nmask, &nmask, 10);
622 if (bits >= 1 && bits <= 32) {
623 mask.s_addr = htonl(0xffffffff << (32 - bits));
624 strcpy(netmask, inet_ntoa(mask));
625 }
626 }
627 }
628 gateway = strsep(&tmp, " ");
629
630 if (gateway && *gateway) {
631 if (add)
632 route_add(ifname, metric, ipaddr, gateway, netmask);
633 else
634 route_del(ifname, metric, ipaddr, gateway, netmask);
635 }
636 }
637 free(routes);
638 }
639
640 void do_wan_routes(char *ifname, int metric, int add)
641 {
642 if (nvram_get_int("dhcp_routes")) {
643 // Static Routes: IP ROUTER IP2 ROUTER2 ...
644 // Classless Static Routes: IP/MASK ROUTER IP2/MASK2 ROUTER2 ...
645 _do_wan_routes(ifname, "wan_routes1", metric, add);
646 _do_wan_routes(ifname, "wan_routes2", metric, add);
647 }
648 }
649
650 // -----------------------------------------------------------------------------
651
652 const char wan_connecting[] = "/var/lib/misc/wan.connecting";
653
654 static int is_sta(int idx, int unit, int subunit, void *param)
655 {
656 char **p = param;
657
658 if (nvram_match(wl_nvname("mode", unit, subunit), "sta")) {
659 *p = nvram_safe_get(wl_nvname("ifname", unit, subunit));
660 return 1;
661 }
662 return 0;
663 }
664
665 void start_wan(int mode)
666 {
667 int wan_proto;
668 char *wan_ifname;
669 char *p = NULL;
670 struct ifreq ifr;
671 int sd;
672 int max;
673 int mtu;
674 char buf[128];
675 int vid;
676 int vid_map;
677 int vlan0tag;
678
679 TRACE_PT("begin\n");
680
681 f_write(wan_connecting, NULL, 0, 0, 0);
682
683 //
684
685 if (!foreach_wif(1, &p, is_sta)) {
686 p = nvram_safe_get("wan_ifnameX");
687 /* vlan ID mapping */
688 if (sscanf(p, "vlan%d", &vid) == 1) {
689 vlan0tag = nvram_get_int("vlan0tag");
690 snprintf(buf, sizeof(buf), "vlan%dvid", vid);
691 vid_map = nvram_get_int(buf);
692 if ((vid_map < 1) || (vid_map > 4094)) vid_map = vlan0tag | vid;
693 snprintf(buf, sizeof(buf), "vlan%d", vid_map);
694 p = buf;
695 }
696 set_mac(p, "mac_wan", 1);
697 }
698 nvram_set("wan_ifname", p);
699 nvram_set("wan_ifnames", p);
700
701 //
702
703 wan_ifname = nvram_safe_get("wan_ifname");
704 if (wan_ifname[0] == 0) {
705 wan_ifname = "none";
706 nvram_set("wan_ifname", wan_ifname);
707 }
708
709 if (strcmp(wan_ifname, "none") == 0) {
710 nvram_set("wan_proto", "disabled");
711 syslog(LOG_INFO, "No WAN");
712 }
713
714 //
715
716 wan_proto = get_wan_proto();
717
718 // set the default gateway for WAN interface
719 nvram_set("wan_gateway_get", nvram_safe_get("wan_gateway"));
720
721 if (wan_proto == WP_DISABLED) {
722 start_wan_done(wan_ifname);
723 return;
724 }
725
726 if ((sd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0) {
727 perror("socket");
728 return;
729 }
730
731 // MTU
732
733 switch (wan_proto) {
734 case WP_PPPOE:
735 case WP_PPP3G:
736 max = 1492;
737 break;
738 case WP_PPTP:
739 case WP_L2TP:
740 max = 1460;
741 break;
742 default:
743 max = 1500;
744 break;
745 }
746 if (nvram_match("mtu_enable", "0")) {
747 mtu = max;
748 }
749 else {
750 mtu = nvram_get_int("wan_mtu");
751 if (mtu > max) mtu = max;
752 else if (mtu < 576) mtu = 576;
753 }
754 sprintf(buf, "%d", mtu);
755 nvram_set("wan_mtu", buf);
756 nvram_set("wan_run_mtu", buf);
757
758 // 43011: zhijian 2006-12-25 for CD-Router v3.4 mtu bug of PPTP connection mode
759 /* if (wan_proto == WP_PPTP) {
760 mtu += 40;
761 } */ // commented out; checkme -- zzz
762
763 if (wan_proto != WP_PPTP && wan_proto != WP_L2TP && wan_proto != WP_PPPOE) {
764 // Don't set the MTU on the port for PPP connections, it will be set on the link instead
765 ifr.ifr_mtu = mtu;
766 strcpy(ifr.ifr_name, wan_ifname);
767 ioctl(sd, SIOCSIFMTU, &ifr);
768 }
769
770 //
771
772 ifconfig(wan_ifname, IFUP, NULL, NULL);
773
774 start_firewall();
775
776 set_host_domain_name();
777
778 switch (wan_proto) {
779 case WP_PPPOE:
780 case WP_PPP3G:
781 start_pppoe(PPPOE0);
782 break;
783 case WP_DHCP:
784 case WP_L2TP:
785 case WP_PPTP:
786 if (using_dhcpc()) {
787 stop_dhcpc();
788 start_dhcpc();
789 }
790 else if (wan_proto != WP_DHCP) {
791 ifconfig(wan_ifname, IFUP, "0.0.0.0", NULL);
792 ifconfig(wan_ifname, IFUP, nvram_safe_get("wan_ipaddr"), nvram_safe_get("wan_netmask"));
793
794 p = nvram_safe_get("wan_gateway");
795 if ((*p != 0) && (strcmp(p, "0.0.0.0") != 0))
796 preset_wan(wan_ifname, p, nvram_safe_get("wan_netmask"));
797
798 switch (wan_proto) {
799 case WP_PPTP:
800 start_pptp(mode);
801 break;
802 case WP_L2TP:
803 start_l2tp();
804 break;
805 }
806 }
807 break;
808 default: // static
809 nvram_set("wan_iface", wan_ifname);
810 ifconfig(wan_ifname, IFUP, nvram_safe_get("wan_ipaddr"), nvram_safe_get("wan_netmask"));
811
812 int r = 10;
813 while ((!check_wanup()) && (r-- > 0)) {
814 sleep(1);
815 }
816
817 start_wan_done(wan_ifname);
818 break;
819 }
820
821 // Get current WAN hardware address
822 strlcpy(ifr.ifr_name, wan_ifname, IFNAMSIZ);
823 if (ioctl(sd, SIOCGIFHWADDR, &ifr) == 0) {
824 nvram_set("wan_hwaddr", ether_etoa(ifr.ifr_hwaddr.sa_data, buf));
825 }
826
827 /* Set initial QoS mode again now that WAN port is ready. */
828 set_et_qos_mode(sd);
829
830 close(sd);
831
832 enable_ip_forward();
833
834 led(LED_DIAG, 0); // for 4712, 5325E (?)
835 led(LED_DMZ, nvram_match("dmz_enable", "1"));
836
837 TRACE_PT("end\n");
838 }
839
840 #ifdef TCONFIG_IPV6
841 void start_wan6_done(const char *wan_ifname)
842 {
843 struct in_addr addr4;
844 struct in6_addr addr;
845 static char addr6[INET6_ADDRSTRLEN];
846
847 int service = get_ipv6_service();
848
849 if (service != IPV6_DISABLED) {
850 if ((nvram_get_int("ipv6_accept_ra") & 1) != 0)
851 accept_ra(wan_ifname);
852 }
853
854 switch (service) {
855 case IPV6_NATIVE:
856 eval("ip", "route", "add", "::/0", "dev", (char *)wan_ifname, "metric", "2048");
857 break;
858 case IPV6_NATIVE_DHCP:
859 eval("ip", "route", "add", "::/0", "dev", (char *)wan_ifname);
860 stop_dhcp6c();
861 start_dhcp6c();
862 break;
863 case IPV6_ANYCAST_6TO4:
864 case IPV6_6IN4:
865 stop_ipv6_tunnel();
866 if (service == IPV6_ANYCAST_6TO4) {
867 addr4.s_addr = 0;
868 memset(&addr, 0, sizeof(addr));
869 inet_aton(get_wanip(), &addr4);
870 addr.s6_addr16[0] = htons(0x2002);
871 ipv6_mapaddr4(&addr, 16, &addr4, 0);
872 addr.s6_addr16[3] = htons(0x0001);
873 inet_ntop(AF_INET6, &addr, addr6, sizeof(addr6));
874 nvram_set("ipv6_prefix", addr6);
875 }
876 start_ipv6_tunnel();
877 // FIXME: give it a few seconds for DAD completion
878 sleep(2);
879 break;
880 case IPV6_6RD:
881 case IPV6_6RD_DHCP:
882 stop_6rd_tunnel();
883 start_6rd_tunnel();
884 // FIXME2?: give it a few seconds for DAD completion
885 sleep(2);
886 break;
887 }
888 }
889 #endif
890
891 // ppp_demand: 0=keep alive, 1=connect on demand (run 'listen')
892 // wan_ifname: vlan1
893 // wan_iface: ppp# (PPPOE, PPP3G, PPTP, L2TP), vlan1 (DHCP, HB, Static)
894
895 void start_wan_done(char *wan_ifname)
896 {
897 int proto;
898 int n;
899 char *gw;
900 struct sysinfo si;
901 int wanup;
902
903 TRACE_PT("begin wan_ifname=%s\n", wan_ifname);
904
905 sysinfo(&si);
906 f_write("/var/lib/misc/wantime", &si.uptime, sizeof(si.uptime), 0, 0);
907
908 proto = get_wan_proto();
909
910 // delete all default routes
911 route_del(wan_ifname, 0, NULL, NULL, NULL);
912
913 if (proto != WP_DISABLED) {
914 // set default route to gateway if specified
915 gw = wan_gateway();
916 #if 0
917 if (proto == WP_PPTP && !using_dhcpc()) {
918 // For PPTP protocol, we must use ppp_get_ip as gateway, not pptp_server_ip (why ??)
919 if (*gw == 0 || strcmp(gw, "0.0.0.0") == 0) gw = nvram_safe_get("ppp_get_ip");
920 }
921 #endif
922 if ((*gw != 0) && (strcmp(gw, "0.0.0.0") != 0)) {
923 if (proto == WP_DHCP || proto == WP_STATIC) {
924 // possibly gateway is over the bridge, try adding a route to gateway first
925 route_add(wan_ifname, 0, gw, NULL, "255.255.255.255");
926 }
927
928 n = 5;
929 while ((route_add(wan_ifname, 0, "0.0.0.0", gw, "0.0.0.0") == 1) && (n--)) {
930 sleep(1);
931 }
932 _dprintf("set default gateway=%s n=%d\n", gw, n);
933
934 // hack: avoid routing cycles, when both peer and server have the same IP
935 if (proto == WP_PPTP || proto == WP_L2TP) {
936 // delete gateway route as it's no longer needed
937 route_del(wan_ifname, 0, gw, "0.0.0.0", "255.255.255.255");
938 }
939 }
940
941 #ifdef THREE_ARP_GRATUATOUS_SUPPORT // from 43011; checkme; commented-out -- zzz
942 /*
943 // 43011: Alpha add to send Gratuitous ARP when wan_proto is Static IP 2007-04-09
944 if (proto == WP_STATIC)
945 {
946 int ifindex;
947 u_int32_t wan_ip;
948 unsigned char wan_mac[6];
949
950 if (read_iface(nvram_safe_get("wan_iface"), &ifindex, &wan_ip, wan_mac) >= 0)
951 arpping(wan_ip, wan_ip, wan_mac, nvram_safe_get("wan_iface"));
952 }
953 */
954 #endif
955
956 if (proto == WP_PPTP || proto == WP_L2TP) {
957 route_del(nvram_safe_get("wan_iface"), 0, nvram_safe_get("wan_gateway_get"), NULL, "255.255.255.255");
958 route_add(nvram_safe_get("wan_iface"), 0, nvram_safe_get("ppp_get_ip"), NULL, "255.255.255.255");
959 }
960 if (proto == WP_L2TP) {
961 route_add(nvram_safe_get("wan_ifname"), 0, nvram_safe_get("l2tp_server_ip"), nvram_safe_get("wan_gateway"), "255.255.255.255"); // fixed routing problem in Israel by kanki
962 }
963 }
964
965 dns_to_resolv();
966 start_dnsmasq();
967
968 start_firewall();
969 start_qos();
970
971 do_static_routes(1);
972 // and routes supplied via DHCP
973 do_wan_routes(using_dhcpc() ? nvram_safe_get("wan_ifname") : wan_ifname, 0, 1);
974
975 stop_zebra();
976 start_zebra();
977
978 wanup = check_wanup();
979
980 if ((wanup) || (time(0) < Y2K)) {
981 stop_ntpc();
982 start_ntpc();
983 }
984
985 if ((wanup) || (proto == WP_DISABLED)) {
986 stop_ddns();
987 start_ddns();
988 stop_igmp_proxy();
989 stop_udpxy();
990 start_igmp_proxy();
991 start_udpxy();
992 }
993
994 #ifdef TCONFIG_IPV6
995 start_wan6_done(get_wan6face());
996 #endif
997
998 stop_upnp();
999 start_upnp();
1000
1001 // restart httpd
1002 start_httpd();
1003
1004 if (wanup) {
1005 SET_LED(GOT_IP);
1006 notice_set("wan", "");
1007
1008 run_nvscript("script_wanup", NULL, 0);
1009 }
1010
1011 // We don't need STP after wireless led is lighted // no idea why... toggling it if necessary -- zzz
1012 if (check_hw_type() == HW_BCM4702) {
1013 eval("brctl", "stp", nvram_safe_get("lan_ifname"), "0");
1014 if (nvram_match("lan_stp", "1"))
1015 eval("brctl", "stp", nvram_safe_get("lan_ifname"), "1");
1016 if(strcmp(nvram_safe_get("lan1_ifname"),"")!=0) {
1017 eval("brctl", "stp", nvram_safe_get("lan1_ifname"), "0");
1018 if (nvram_match("lan1_stp", "1"))
1019 eval("brctl", "stp", nvram_safe_get("lan1_ifname"), "1");
1020 }
1021 if(strcmp(nvram_safe_get("lan2_ifname"),"")!=0) {
1022 eval("brctl", "stp", nvram_safe_get("lan2_ifname"), "0");
1023 if (nvram_match("lan2_stp", "1"))
1024 eval("brctl", "stp", nvram_safe_get("lan2_ifname"), "1");
1025 }
1026 if(strcmp(nvram_safe_get("lan3_ifname"),"")!=0) {
1027 eval("brctl", "stp", nvram_safe_get("lan3_ifname"), "0");
1028 if (nvram_match("lan3_stp", "1"))
1029 eval("brctl", "stp", nvram_safe_get("lan3_ifname"), "1");
1030 }
1031 }
1032
1033 if (wanup)
1034 start_vpn_eas();
1035
1036 #ifdef TCONFIG_PPTPD
1037 if (wanup && nvram_get_int("pptp_client_enable"))
1038 start_pptp_client();
1039 #endif
1040
1041 unlink(wan_connecting);
1042
1043 new_qoslimit_start(); //!! RAF
1044
1045 TRACE_PT("end\n");
1046 }
1047
1048 void stop_wan(void)
1049 {
1050 char name[80];
1051 char *next;
1052
1053 TRACE_PT("begin\n");
1054
1055 #ifdef TCONFIG_PPTPD
1056 stop_pptp_client();
1057 stop_dnsmasq();
1058 dns_to_resolv();
1059 start_dnsmasq();
1060 #endif
1061
1062 new_qoslimit_stop(); //!! RAF
1063
1064 stop_qos();
1065 stop_upnp(); //!!TB - moved from stop_services()
1066 stop_firewall();
1067 stop_igmp_proxy();
1068 stop_udpxy();
1069 stop_ntpc();
1070
1071 #ifdef TCONFIG_IPV6
1072 stop_ipv6_tunnel();
1073 stop_dhcp6c();
1074 nvram_set("ipv6_get_dns", "");
1075 #endif
1076
1077 /* Kill any WAN client daemons or callbacks */
1078 stop_redial();
1079 stop_pppoe();
1080 stop_ppp();
1081 stop_dhcpc();
1082 stop_vpn_eas();
1083 #ifdef TCONFIG_PPTPD
1084 if (nvram_get_int("pptp_client_enable"))
1085 stop_pptp_client();
1086 #endif
1087 clear_resolv();
1088 nvram_set("wan_get_dns", "");
1089
1090 /* Bring down WAN interfaces */
1091 foreach(name, nvram_safe_get("wan_ifnames"), next)
1092 ifconfig(name, 0, "0.0.0.0", NULL);
1093
1094 SET_LED(RELEASE_IP);
1095 //notice_set("wan", "");
1096 unlink("/var/notice/wan");
1097 unlink(wan_connecting);
1098
1099 TRACE_PT("end\n");
1100 }
Tomato firmware and modifications.