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dnsmasq.c
984 lines (939 loc) · 28.5 KB
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dnsmasq.c
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/*
* dnsmasq.c
*
* Copyright (C) 2007 Sebastian Gottschall <s.gottschall@dd-wrt.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id:
*/
#ifdef HAVE_DNSMASQ
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <syslog.h>
#include <utils.h>
#include <bcmnvram.h>
#include <shutils.h>
#include <wlutils.h>
#include <services.h>
extern int usejffs;
extern void addHost(char *host, char *ip, int withdomain);
extern void genHosts(void);
static void add_server(FILE *fp, char *server)
{
fprintf(fp, "server=/%s/\n", server);
}
static void add_ubnt_telemetry(FILE *fp)
{
static char *servers[] = {
"trace.svc.ui.com",
"trace.dev.svc.ui.com",
"trace.stg.svc.ui.com",
"crash-report-service.svc.ui.com",
"crash-report-service.stg.svc.ui.com",
"crash-report-service.dev.svc.ui.com",
};
int i;
for (i = 0; i < sizeof(servers) / sizeof(char *); i++)
add_server(fp, servers[i]);
}
static void add_ms_telemetry(FILE *fp)
{
static char *servers[] = {
"1oavsblobprodcus350.blob.core.windows.net",
"37bvsblobprodcus311.blob.core.windows.net",
"a.ads1.msn.com",
"a.ads2.msads.net",
"a.ads2.msn.com",
"a.rad.msn.com",
"ac3.msn.com",
"adnexus.net",
"adnxs.com",
"ads.msn.com",
"ads1.msads.net",
"ads1.msn.com",
"aidps.atdmt.com",
"aka-cdn-ns.adtech.de",
"alpha.telemetry.microsoft.com",
"api.cortana.ai",
"api.edgeoffer.microsoft.com",
"asimov-win.settings.data.microsoft.com.akadns.net",
"azwancan.trafficmanager.net",
"b.ads1.msn.com",
"b.ads2.msads.net",
"b.rad.msn.com",
"bingads.microsoft.com",
"blobcollector.events.data.trafficmanager.net",
"bn2-ris-ap-prod-atm.trafficmanager.net",
"bn2-ris-prod-atm.trafficmanager.net",
"bn2wns1.wns.windows.com",
"bn3sch020010558.wns.windows.com",
"bn3sch020010560.wns.windows.com",
"bn3sch020010618.wns.windows.com",
"bn3sch020010629.wns.windows.com",
"bn3sch020010631.wns.windows.com",
"bn3sch020010635.wns.windows.com",
"bn3sch020010636.wns.windows.com",
"bn3sch020010650.wns.windows.com",
"bn3sch020011727.wns.windows.com",
"bn3sch020012850.wns.windows.com",
"bn3sch020020322.wns.windows.com",
"bn3sch020020749.wns.windows.com",
"bn3sch020022328.wns.windows.com",
"bn3sch020022335.wns.windows.com",
"bn3sch020022361.wns.windows.com",
"bn4sch101120814.wns.windows.com",
"bn4sch101120818.wns.windows.com",
"bn4sch101120911.wns.windows.com",
"bn4sch101120913.wns.windows.com",
"bn4sch101121019.wns.windows.com",
"bn4sch101121109.wns.windows.com",
"bn4sch101121118.wns.windows.com",
"bn4sch101121223.wns.windows.com",
"bn4sch101121407.wns.windows.com",
"bn4sch101121618.wns.windows.com",
"bn4sch101121704.wns.windows.com",
"bn4sch101121709.wns.windows.com",
"bn4sch101121714.wns.windows.com",
"bn4sch101121908.wns.windows.com",
"bn4sch101122117.wns.windows.com",
"bn4sch101122310.wns.windows.com",
"bn4sch101122312.wns.windows.com",
"bn4sch101122421.wns.windows.com",
"bn4sch101123108.wns.windows.com",
"bn4sch101123110.wns.windows.com",
"bn4sch101123202.wns.windows.com",
"bn4sch102110124.wns.windows.com",
"browser.pipe.aria.microsoft.com",
"bs.serving-sys.com",
"c.atdmt.com",
"c.msn.com",
"ca.telemetry.microsoft.com",
"cache.datamart.windows.com",
"cdn.atdmt.com",
"cds1.stn.llnw.net",
"cds10.stn.llnw.net",
"cds1203.lon.llnw.net",
"cds1204.lon.llnw.net",
"cds1209.lon.llnw.net",
"cds1219.lon.llnw.net",
"cds1228.lon.llnw.net",
"cds1244.lon.llnw.net",
"cds1257.lon.llnw.net",
"cds1265.lon.llnw.net",
"cds1269.lon.llnw.net",
"cds1273.lon.llnw.net",
"cds1285.lon.llnw.net",
"cds1287.lon.llnw.net",
"cds1289.lon.llnw.net",
"cds1293.lon.llnw.net",
"cds1307.lon.llnw.net",
"cds1310.lon.llnw.net",
"cds1325.lon.llnw.net",
"cds1327.lon.llnw.net",
"cds177.dus.llnw.net",
"cds20005.stn.llnw.net",
"cds20404.lcy.llnw.net",
"cds20411.lcy.llnw.net",
"cds20415.lcy.llnw.net",
"cds20416.lcy.llnw.net",
"cds20417.lcy.llnw.net",
"cds20424.lcy.llnw.net",
"cds20425.lcy.llnw.net",
"cds20431.lcy.llnw.net",
"cds20435.lcy.llnw.net",
"cds20440.lcy.llnw.net",
"cds20443.lcy.llnw.net",
"cds20445.lcy.llnw.net",
"cds20450.lcy.llnw.net",
"cds20452.lcy.llnw.net",
"cds20457.lcy.llnw.net",
"cds20461.lcy.llnw.net",
"cds20469.lcy.llnw.net",
"cds20475.lcy.llnw.net",
"cds20482.lcy.llnw.net",
"cds20485.lcy.llnw.net",
"cds20495.lcy.llnw.net",
"cds21205.lon.llnw.net",
"cds21207.lon.llnw.net",
"cds21225.lon.llnw.net",
"cds21229.lon.llnw.net",
"cds21233.lon.llnw.net",
"cds21238.lon.llnw.net",
"cds21244.lon.llnw.net",
"cds21249.lon.llnw.net",
"cds21256.lon.llnw.net",
"cds21257.lon.llnw.net",
"cds21258.lon.llnw.net",
"cds21261.lon.llnw.net",
"cds21267.lon.llnw.net",
"cds21278.lon.llnw.net",
"cds21281.lon.llnw.net",
"cds21293.lon.llnw.net",
"cds21309.lon.llnw.net",
"cds21313.lon.llnw.net",
"cds21321.lon.llnw.net",
"cds27.ory.llnw.net",
"cds299.lcy.llnw.net",
"cds30027.stn.llnw.net",
"cds308.lcy.llnw.net",
"cds310.lcy.llnw.net",
"cds38.ory.llnw.net",
"cds405.lcy.llnw.net",
"cds406.lcy.llnw.net",
"cds407.fra.llnw.net",
"cds416.lcy.llnw.net",
"cds421.lcy.llnw.net",
"cds422.lcy.llnw.net",
"cds425.lcy.llnw.net",
"cds426.lcy.llnw.net",
"cds447.lcy.llnw.net",
"cds458.lcy.llnw.net",
"cds459.lcy.llnw.net",
"cds46.ory.llnw.net",
"cds461.lcy.llnw.net",
"cds468.lcy.llnw.net",
"cds469.lcy.llnw.net",
"cds471.lcy.llnw.net",
"cds483.lcy.llnw.net",
"cds484.lcy.llnw.net",
"cds489.lcy.llnw.net",
"cds493.lcy.llnw.net",
"cds494.lcy.llnw.net",
"cds54.ory.llnw.net",
"cds812.lon.llnw.net",
"cds815.lon.llnw.net",
"cds818.lon.llnw.net",
"cds832.lon.llnw.net",
"cds836.lon.llnw.net",
"cds840.lon.llnw.net",
"cds843.lon.llnw.net",
"cds857.lon.llnw.net",
"cds868.lon.llnw.net",
"cds869.lon.llnw.net",
"ceuswatcab01.blob.core.windows.net",
"ceuswatcab02.blob.core.windows.net",
"compatexchange1.trafficmanager.net",
"corp.sts.microsoft.com",
"corpext.msitadfs.glbdns2.microsoft.com",
"cs1.wpc.v0cdn.net",
"cy2.vortex.data.microsoft.com.akadns.net",
"db3aqu.atdmt.com",
"db5-eap.settings-win.data.microsoft.com.akadns.net",
"db5.settings-win.data.microsoft.com.akadns.net",
"db5.settings.data.microsoft.com.akadns.net",
"db5.vortex.data.microsoft.com.akadns.net",
"df.telemetry.microsoft.com",
"diagnostics.support.microsoft.com",
"eaus2watcab01.blob.core.windows.net",
"eaus2watcab02.blob.core.windows.net",
"ec.atdmt.com",
"flex.msn.com",
"g.msn.com",
"geo.settings-win.data.microsoft.com.akadns.net",
"geo.settings.data.microsoft.com.akadns.net",
"geo.vortex.data.microsoft.com.akadns.net",
"h1.msn.com",
"h2.msn.com",
"hk2.settings.data.microsoft.com.akadns.net",
"hk2.wns.windows.com",
"hk2sch130020721.wns.windows.com",
"hk2sch130020723.wns.windows.com",
"hk2sch130020726.wns.windows.com",
"hk2sch130020729.wns.windows.com",
"hk2sch130020732.wns.windows.com",
"hk2sch130020824.wns.windows.com",
"hk2sch130020843.wns.windows.com",
"hk2sch130020851.wns.windows.com",
"hk2sch130020854.wns.windows.com",
"hk2sch130020855.wns.windows.com",
"hk2sch130020924.wns.windows.com",
"hk2sch130020936.wns.windows.com",
"hk2sch130020940.wns.windows.com",
"hk2sch130020956.wns.windows.com",
"hk2sch130020958.wns.windows.com",
"hk2sch130020961.wns.windows.com",
"hk2sch130021017.wns.windows.com",
"hk2sch130021029.wns.windows.com",
"hk2sch130021035.wns.windows.com",
"hk2sch130021137.wns.windows.com",
"hk2sch130021142.wns.windows.com",
"hk2sch130021153.wns.windows.com",
"hk2sch130021217.wns.windows.com",
"hk2sch130021246.wns.windows.com",
"hk2sch130021249.wns.windows.com",
"hk2sch130021260.wns.windows.com",
"hk2sch130021264.wns.windows.com",
"hk2sch130021322.wns.windows.com",
"hk2sch130021323.wns.windows.com",
"hk2sch130021329.wns.windows.com",
"hk2sch130021334.wns.windows.com",
"hk2sch130021360.wns.windows.com",
"hk2sch130021432.wns.windows.com",
"hk2sch130021433.wns.windows.com",
"hk2sch130021435.wns.windows.com",
"hk2sch130021437.wns.windows.com",
"hk2sch130021440.wns.windows.com",
"hk2sch130021450.wns.windows.com",
"hk2sch130021518.wns.windows.com",
"hk2sch130021523.wns.windows.com",
"hk2sch130021526.wns.windows.com",
"hk2sch130021527.wns.windows.com",
"hk2sch130021544.wns.windows.com",
"hk2sch130021554.wns.windows.com",
"hk2sch130021618.wns.windows.com",
"hk2sch130021634.wns.windows.com",
"hk2sch130021638.wns.windows.com",
"hk2sch130021646.wns.windows.com",
"hk2sch130021652.wns.windows.com",
"hk2sch130021654.wns.windows.com",
"hk2sch130021657.wns.windows.com",
"hk2sch130021723.wns.windows.com",
"hk2sch130021726.wns.windows.com",
"hk2sch130021727.wns.windows.com",
"hk2sch130021730.wns.windows.com",
"hk2sch130021731.wns.windows.com",
"hk2sch130021754.wns.windows.com",
"hk2sch130021829.wns.windows.com",
"hk2sch130021830.wns.windows.com",
"hk2sch130021833.wns.windows.com",
"hk2sch130021840.wns.windows.com",
"hk2sch130021842.wns.windows.com",
"hk2sch130021851.wns.windows.com",
"hk2sch130021852.wns.windows.com",
"hk2sch130021927.wns.windows.com",
"hk2sch130021928.wns.windows.com",
"hk2sch130021929.wns.windows.com",
"hk2sch130021958.wns.windows.com",
"hk2sch130022035.wns.windows.com",
"hk2sch130022041.wns.windows.com",
"hk2sch130022049.wns.windows.com",
"hk2sch130022135.wns.windows.com",
"hk2wns1.wns.windows.com",
"hk2wns1b.wns.windows.com",
"ieonlinews.microsoft.com",
"ieonlinews.trafficmanager.net",
"insideruser.trafficmanager.net",
"kmwatson.events.data.microsoft.com",
"kmwatsonc.events.data.microsoft.com",
"lb1.www.ms.akadns.net",
"live.rads.msn.com",
"m.adnxs.com",
"mobile.pipe.aria.microsoft.com",
"modern.watson.data.microsoft.com.akadns.net",
"msedge.net",
"msntest.serving-sys.com",
"nexus.officeapps.live.com",
"nexusrules.officeapps.live.com",
"nw-umwatson.events.data.microsoft.com",
"oca.telemetry.microsoft.com",
"oca.telemetry.microsoft.us",
"onecollector.cloudapp.aria.akadns.net",
"par02p.wns.windows.com",
"pre.footprintpredict.com",
"presence.teams.live.com",
"preview.msn.com",
"rad.live.com",
"rad.msn.com",
"redir.metaservices.microsoft.com",
"reports.wes.df.telemetry.microsoft.com",
"romeccs.microsoft.com",
"schemas.microsoft.akadns.net",
"secure.adnxs.com",
"secure.flashtalking.com",
"services.wes.df.telemetry.microsoft.com",
"settings-sandbox.data.microsoft.com",
"settings-win-ppe.data.microsoft.com",
"settings.data.glbdns2.microsoft.com",
"settingsfd-geo.trafficmanager.net",
"sg2p.wns.windows.com",
"spynet2.microsoft.com",
"spynetalt.microsoft.com",
"spyneteurope.microsoft.akadns.net",
"sqm.df.telemetry.microsoft.com",
"sqm.telemetry.microsoft.com",
"sqm.telemetry.microsoft.com.nsatc.net",
"ssw.live.com",
"survey.watson.microsoft.com",
"tele.trafficmanager.net",
"telecommand.telemetry.microsoft.com",
"telemetry.appex.bing.net",
"telemetry.microsoft.com",
"telemetry.remoteapp.windowsazure.com",
"telemetry.urs.microsoft.com",
"teredo.ipv6.microsoft.com",
"test.activity.windows.com",
"uks.b.prd.ags.trafficmanager.net",
"umwatson.events.data.microsoft.com",
"umwatsonc.events.data.microsoft.com",
"umwatsonc.telemetry.microsoft.us",
"v10-win.vortex.data.microsoft.com.akadns.net",
"v10.vortex-win.data.microsoft.com",
"v20.vortex-win.data.microsoft.com",
"view.atdmt.com",
"vortex-sandbox.data.microsoft.com",
"vortex.data.glbdns2.microsoft.com",
"vortex.data.microsoft.com",
"watson.live.com",
"watson.microsoft.com",
"watson.ppe.telemetry.microsoft.com",
"watson.telemetry.microsoft.com",
"web.vortex.data.microsoft.com",
"wes.df.telemetry.microsoft.com",
"weus2watcab01.blob.core.windows.net",
"weus2watcab02.blob.core.windows.net",
"win10.ipv6.microsoft.com",
"win1710.ipv6.microsoft.com",
"win8.ipv6.microsoft.com",
"xblgdvrassets3010.blob.core.windows.net",
"ztd.dds.microsoft.com",
"au-v10.events.data.microsoft.com",
"au-v20.events.data.microsoft.com",
"au.vortex-win.data.microsoft.com",
"de-v20.events.data.microsoft.com",
"de.vortex-win.data.microsoft.com",
"eu-v10.events.data.microsoft.com",
"eu-v20.events.data.microsoft.com",
"eu.vortex-win.data.microsoft.com",
"events-sandbox.data.microsoft.com",
"events.data.microsoft.com",
"jp-v10.events.data.microsoft.com",
"jp-v20.events.data.microsoft.com",
"settings-win.data.microsoft.com",
"uk-v20.events.data.microsoft.com",
"uk.vortex-win.data.microsoft.com",
"us-v10.events.data.microsoft.com",
"us-v20.events.data.microsoft.com",
"us.vortex-win.data.microsoft.com",
"us4-v20.events.data.microsoft.com",
"us5-v20.events.data.microsoft.com",
"v10.events.data.microsoft.com",
"v20.events.data.microsoft.com",
"vortex-win-sandbox.data.microsoft.com",
"vortex-win.data.microsoft.com",
};
int i;
for (i = 0; i < sizeof(servers) / sizeof(char *); i++)
add_server(fp, servers[i]);
}
void stop_dnsmasq(void);
#define IDX_IFNAME 0
#define IDX_DHCPON 1
#define IDX_LEASESTART 2
#define IDX_LEASEMAX 3
#define IDX_LEASETIME 4
char *getmdhcp(int count, int index, char *buffer)
{
int cnt = 0;
char *next, *wordlist;
char word[128];
wordlist = nvram_safe_get("mdhcpd");
foreach(word, wordlist, next)
{
if (cnt < index) {
cnt++;
continue;
}
GETENTRYBYIDX(interface, word, 0);
GETENTRYBYIDX(dhcpon, word, 1);
GETENTRYBYIDX(start, word, 2);
GETENTRYBYIDX(max, word, 3);
GETENTRYBYIDX(leasetime, word, 4);
if (leasetime == NULL) {
leasetime = "3660";
}
switch (count) {
case IDX_IFNAME:
strcpy(buffer, interface);
return buffer;
case IDX_DHCPON:
strcpy(buffer, dhcpon);
return buffer;
case IDX_LEASESTART:
strcpy(buffer, start);
return buffer;
case IDX_LEASEMAX:
strcpy(buffer, max);
return buffer;
case IDX_LEASETIME:
strcpy(buffer, leasetime);
return buffer;
}
}
return "";
}
static int landhcp(void)
{
if (!getWET())
if (nvram_match("lan_proto", "dhcp") && nvram_matchi("dhcpfwd_enable", 0))
return 1;
return 0;
}
static int hasmdhcp(void)
{
if (nvram_exists("mdhcpd_count")) {
int mdhcpcount = nvram_geti("mdhcpd_count");
return mdhcpcount > 0 ? 1 : 0;
}
return 0;
}
static int canlan(void)
{
if ((nvram_matchi("dhcpfwd_enable", 0) || nvram_matchi("dns_crypt", 1)))
return 1;
return 0;
}
static void makeentry(FILE *fp, char *ifname, int dhcpnum, int dhcpstart, char *ip, char *netmask, char *leasetime)
{
unsigned int ip1 = get_single_ip(ip, 0);
unsigned int ip2 = get_single_ip(ip, 1);
unsigned int ip3 = get_single_ip(ip, 2);
unsigned int ip4 = get_single_ip(ip, 3);
unsigned int im1 = get_single_ip(netmask, 0);
unsigned int im2 = get_single_ip(netmask, 1);
unsigned int im3 = get_single_ip(netmask, 2);
unsigned int im4 = get_single_ip(netmask, 3);
unsigned int sip = ((ip1 & im1) << 24) + ((ip2 & im2) << 16) + ((ip3 & im3) << 8) + dhcpstart;
unsigned int eip = sip + dhcpnum - 1;
fprintf(fp, "dhcp-range=%s,", ifname);
fprintf(fp, "%d.%d.%d.%d,", ip1 & im1, ip2 & im2, ip3 & im3, dhcpstart);
fprintf(fp, "%d.%d.%d.%d,", (eip >> 24) & 0xff, (eip >> 16) & 0xff, (eip >> 8) & 0xff, eip & 0xff);
fprintf(fp, "%s,", netmask);
fprintf(fp, "%sm\n", leasetime);
}
static void makeentry_full(FILE *fp, char *ifname, int dhcpnum, char *ip, char *netmask, char *leasetime)
{
unsigned int ip1 = get_single_ip(ip, 0);
unsigned int ip2 = get_single_ip(ip, 1);
unsigned int ip3 = get_single_ip(ip, 2);
unsigned int ip4 = get_single_ip(ip, 3);
unsigned int im1 = 255;
unsigned int im2 = 255;
unsigned int im3 = 255;
unsigned int im4 = 255;
unsigned int sip = ((ip1 & im1) << 24) + ((ip2 & im2) << 16) + ((ip3 & im3) << 8) + ip4;
unsigned int eip = sip + dhcpnum - 1;
fprintf(fp, "dhcp-range=%s,", ifname);
fprintf(fp, "%d.%d.%d.%d,", ip1 & im1, ip2 & im2, ip3 & im3, ip4);
fprintf(fp, "%d.%d.%d.%d,", (eip >> 24) & 0xff, (eip >> 16) & 0xff, (eip >> 8) & 0xff, eip & 0xff);
fprintf(fp, "%s,", netmask);
fprintf(fp, "%sm\n", leasetime);
}
void start_dnsmasq(void)
{
char path[64];
FILE *fp;
char wan_if_buffer[33];
struct dns_lists *dns_list = NULL;
int i;
if (nvram_match("lan_proto", "dhcp") && nvram_matchi("dnsmasq_enable", 0)) {
nvram_seti("dnsmasq_enable", 1);
nvram_async_commit();
}
if (!nvram_matchi("dnsmasq_enable", 1)) {
stop_dnsmasq();
return;
}
#ifdef HAVE_SMARTDNS
start_smartdns();
#endif
int leasechange = nvram_state_change("static_leases");
update_timezone();
#ifdef HAVE_DNSCRYPT
if (nvram_matchi("dns_crypt", 1)) {
stop_process("dnscrypt-proxy", "daemon");
log_eval("dnscrypt-proxy", "-d", "-S", "-a", "127.0.0.1:30", "-R", nvram_safe_get("dns_crypt_resolver"), "-L",
"/etc/dnscrypt/dnscrypt-resolvers.csv");
}
#endif
usejffs = 0;
if (jffs_mounted() && nvram_matchi("dhcpd_usejffs", 1)) {
if (!(fp = fopen("/jffs/dnsmasq.leases", "a"))) {
usejffs = 0;
} else {
fclose(fp);
usejffs = 1;
}
}
/*
* Write configuration file based on current information
*/
if (!(fp = fopen("/tmp/dnsmasq.conf", "w"))) {
perror("/tmp/dnsmasq.conf");
return;
}
// fprintf(fp, "bind-interfaces\n");
if (nvram_matchi("chilli_enable", 1) || nvram_matchi("hotss_enable", 1)) {
char *chilliif;
#ifdef HAVE_HOTSPOT
if (nvram_matchi("hotss_enable", 1))
chilliif = nvram_safe_get("hotss_interface");
else
#endif
chilliif = nvram_safe_get("chilli_interface");
fprintf(fp, "interface=%s", chilliif);
if (!canlan()) {
fprintf(fp, ",");
} else {
if (strcmp(chilliif, nvram_safe_get("lan_ifname"))) {
fprintf(fp, ",%s", nvram_safe_get("lan_ifname"));
}
}
} else if (nvram_matchi("pptpd_enable", 1)) {
fprintf(fp, "listen-address=127.0.0.1");
if (canlan()) {
fprintf(fp, ",%s", nvram_safe_get("lan_ipaddr"));
#ifdef HAVE_IPV6
char buf[INET6_ADDRSTRLEN];
char *ip = getifaddr_any(buf, nvram_safe_get("lan_ifname"), AF_INET6) ?: NULL;
if (ip && nvram_matchi("ipv6_enable", 1))
fprintf(fp, ",%s", ip);
#endif
}
char vifs[256];
getIfLists(vifs, 256);
char var[256], *wordlist, *next;
foreach(var, vifs, next)
{
if (strcmp(safe_get_wan_face(wan_if_buffer), var) && strcmp(nvram_safe_get("lan_ifname"), var)) {
char *ipaddr = nvram_nget("%s_ipaddr", var);
if (*ipaddr && strcmp(ipaddr, "0.0.0.0"))
fprintf(fp, ",%s", ipaddr);
}
}
if (nvram_exists("dnsmasq_addlisten")) {
fprintf(fp, ",%s", nvram_safe_get("dnsmasq_addlisten"));
}
} else {
fprintf(fp, "interface=");
if (canlan()) {
fprintf(fp, "%s", nvram_safe_get("lan_ifname"));
}
char vifs[256];
getIfLists(vifs, 256);
char var[256], *wordlist, *next;
foreach(var, vifs, next)
{
if (strcmp(safe_get_wan_face(wan_if_buffer), var) && strcmp(nvram_safe_get("lan_ifname"), var)) {
char *ipaddr = nvram_nget("%s_ipaddr", var);
if (*ipaddr && strcmp(ipaddr, "0.0.0.0"))
fprintf(fp, ",%s", var);
}
}
if (nvram_exists("dnsmasq_addif")) {
fprintf(fp, ",%s", nvram_safe_get("dnsmasq_addif"));
}
if (nvram_exists("dnsmasq_addifvpn")) {
fprintf(fp, ",%s", nvram_safe_get("dnsmasq_addifvpn"));
}
}
int mdhcpcount = 0;
/* this is usally not required anymore since we add all interfaces with valid ip addresses anyway before */
if (nvram_exists("mdhcpd_count")) {
mdhcpcount = nvram_geti("mdhcpd_count");
for (i = 0; i < mdhcpcount; i++) {
char buffer[128];
if (!strcmp(getmdhcp(IDX_DHCPON, i, buffer), "Off"))
continue;
char *ifname = getmdhcp(IDX_IFNAME, i, buffer);
if (!*(nvram_nget("%s_ipaddr", ifname)) || !*(nvram_nget("%s_netmask", ifname)))
continue;
if (canlan() || i > 0) {
fprintf(fp, ",");
}
if (nvram_matchi("pptpd_enable", 1)) {
fprintf(fp, "%s", nvram_nget("%s_ipaddr", ifname));
#ifdef HAVE_IPV6
char buf[INET6_ADDRSTRLEN];
char *ip = getifaddr_any(buf, ifname, AF_INET6) ?: NULL;
if (ip && nvram_matchi("ipv6_enable", 1))
fprintf(fp, ",%s", ip);
#endif
} else
fprintf(fp, "%s", ifname);
}
}
fprintf(fp, "\n");
fprintf(fp, "resolv-file=/tmp/resolv.dnsmasq\n");
//fprintf(fp, "all-servers\n");
if (nvram_matchi("dnsmasq_strict", 1))
fprintf(fp, "strict-order\n");
#ifdef HAVE_SMARTDNS
if (nvram_matchi("smartdns", 1)) {
nvram_seti("dns_crypt", 0);
fprintf(fp, "server=127.0.0.1#6053\n");
fprintf(fp, "no-resolv\n");
}
#endif
#ifdef HAVE_DNSCRYPT
if (nvram_matchi("dns_crypt", 1)) {
nvram_seti("recursive_dns", 0); // disable unbound
fprintf(fp, "server=127.0.0.1#30\n");
fprintf(fp, "no-resolv\n");
}
#endif
#ifdef HAVE_UNBOUND
if (nvram_matchi("recursive_dns", 1) && !nvram_matchi("smartdns", 1)) {
fprintf(fp, "server=127.0.0.1#7053\n");
fprintf(fp, "no-resolv\n");
}
#endif
#ifdef HAVE_TOR
if (nvram_match("tor_enable", "1") && !nvram_matchi("smartdns", 1))
fprintf(fp, "server=%s#5353\n", nvram_safe_get("lan_ipaddr"));
#endif
/*
* Domain
*/
if (nvram_match("dhcp_domain", "wan")) {
if (nvram_invmatch("wan_domain", ""))
fprintf(fp, "domain=%s\n", nvram_safe_get("wan_domain"));
else if (nvram_invmatch("wan_get_domain", ""))
fprintf(fp, "domain=%s\n", nvram_safe_get("wan_get_domain"));
} else {
if (nvram_invmatch("lan_domain", ""))
fprintf(fp, "domain=%s\n", nvram_safe_get("lan_domain"));
}
/*
* DD-WRT use dnsmasq as DHCP replacement
*/
//bs mod
if (landhcp() || hasmdhcp()) {
/*
* DHCP leasefile
*/
if (nvram_matchi("dhcpd_usenvram", 1)) {
fprintf(fp, "leasefile-ro\n");
fprintf(fp, "dhcp-script=%s\n", "/etc/lease_update.sh");
} else {
if (usejffs)
fprintf(fp, "dhcp-leasefile=/jffs/dnsmasq.leases\n");
else
fprintf(fp, "dhcp-leasefile=/tmp/dnsmasq.leases\n");
}
int dhcp_max = 0;
if (landhcp())
dhcp_max += nvram_geti("dhcp_num") + nvram_geti("static_leasenum");
for (i = 0; i < mdhcpcount; i++) {
char buffer[128];
if (strcmp(getmdhcp(IDX_DHCPON, i, buffer), "On"))
continue;
char *ifname = getmdhcp(IDX_IFNAME, i, buffer);
if (!*(nvram_nget("%s_ipaddr", ifname)) || !*(nvram_nget("%s_netmask", ifname)))
continue;
dhcp_max += atoi(getmdhcp(IDX_LEASEMAX, i, buffer));
}
fprintf(fp, "dhcp-lease-max=%d\n", dhcp_max);
if (landhcp())
fprintf(fp, "dhcp-option=%s,3,%s\n", nvram_safe_get("lan_ifname"), nvram_safe_get("lan_ipaddr"));
for (i = 0; i < mdhcpcount; i++) {
char buffer[128];
if (strcmp(getmdhcp(IDX_DHCPON, i, buffer), "On"))
continue;
char *ifname = getmdhcp(IDX_IFNAME, i, buffer);
if (!*(nvram_nget("%s_ipaddr", ifname)) || !*(nvram_nget("%s_netmask", ifname)))
continue;
fprintf(fp, "dhcp-option=%s,3,", ifname);
fprintf(fp, "%s\n", nvram_nget("%s_ipaddr", ifname));
}
if (nvram_invmatch("wan_wins", "") && nvram_invmatch("wan_wins", "0.0.0.0"))
fprintf(fp, "dhcp-option=44,%s\n", nvram_safe_get("wan_wins"));
if (nvram_matchi("dns_dnsmasq", 0)) {
fprintf(fp, "port=0\n");
#ifdef HAVE_UNBOUND
if (nvram_matchi("recursive_dns", 1)) {
fprintf(fp, "dhcp-option=6,%s\n", nvram_safe_get("lan_ipaddr"));
} else
#endif
#ifdef HAVE_SMARTDNS
if (nvram_matchi("smartdns", 1)) {
fprintf(fp, "dhcp-option=6,%s\n", nvram_safe_get("lan_ipaddr"));
} else
#endif
{
dns_list = get_dns_list(0);
if (dns_list && dns_list->num_servers > 0) {
fprintf(fp, "dhcp-option=6");
for (i = 0; i < dns_list->num_servers; i++)
fprintf(fp, ",%s", dns_list->dns_server[i].ip);
fprintf(fp, "\n");
}
if (dns_list)
free_dns_list(dns_list);
}
}
if (nvram_matchi("auth_dnsmasq", 1))
fprintf(fp, "dhcp-authoritative\n");
if (landhcp()) {
unsigned int dhcpnum = nvram_geti("dhcp_num");
char *ip = nvram_safe_get("lan_ipaddr");
char *netmask = nvram_safe_get("lan_netmask");
char *leasetime = nvram_safe_get("dhcp_lease");
makeentry_full(fp, nvram_safe_get("lan_ifname"), dhcpnum, nvram_safe_get("dhcp_start"), netmask, leasetime);
}
for (i = 0; i < mdhcpcount; i++) {
char buffer[128];
char buffer2[128];
if (strcmp(getmdhcp(IDX_DHCPON, i, buffer), "On"))
continue;
char *ifname = getmdhcp(IDX_IFNAME, i, buffer);
if (!*(nvram_nget("%s_ipaddr", ifname)) || !*(nvram_nget("%s_netmask", ifname)))
continue;
unsigned int dhcpnum = atoi(getmdhcp(IDX_LEASEMAX, i, buffer2));
unsigned int dhcpstart = atoi(getmdhcp(IDX_LEASESTART, i, buffer2));
char *ip = nvram_nget("%s_ipaddr", ifname);
char *netmask = nvram_nget("%s_netmask", ifname);
char *leasetime = getmdhcp(IDX_LEASETIME, i, buffer2);
makeentry(fp, ifname, dhcpnum, dhcpstart, ip, netmask, leasetime);
}
int leasenum = nvram_geti("static_leasenum");
if (leasenum > 0) {
char *lease = nvram_safe_get("static_leases");
char *leasebuf = (char *)malloc(strlen(lease) + 1);
char *cp = leasebuf;
int first = 0;
strcpy(leasebuf, lease);
for (i = 0; i < leasenum; i++) {
char *mac = strsep(&leasebuf, "=");
char *host = strsep(&leasebuf, "=");
char *ip = strsep(&leasebuf, "=");
char *time = strsep(&leasebuf, " ");
if (mac == NULL || host == NULL || ip == NULL)
continue;
fprintf(fp, "dhcp-host=%s,%s,%s,", mac, host, ip);
char nv[64];
sprintf(nv, "dnsmasq_lease_%s", ip);
if (leasechange && nvram_exists(nv)) {
nvram_unset(nv);
}
if (!time || !*time)
fprintf(fp, "infinite\n");
else
fprintf(fp, "%sm\n", time);
#ifdef HAVE_UNBOUND
if (!nvram_matchi("recursive_dns", 1))
#endif
{
if (!first) {
genHosts();
first = 1;
}
addHost(host, ip, 1);
}
}
free(cp);
}
}
fprintf(fp, "bogus-priv\n");
fprintf(fp, "conf-file=/etc/rfc6761.conf\n");
fprintf(fp, "clear-on-reload\n");
#ifdef HAVE_DNSSEC
if (nvram_matchi("dnssec", 1)) {
fprintf(fp, "conf-file=/etc/trust-anchors.conf\n");
fprintf(fp, "dnssec\n");
if (!nvram_matchi("ntp_enable", 1)) {
fprintf(fp, "dnssec-no-timecheck\n");
}
if (nvram_matchi("dnssec_cu", 1)) {
fprintf(fp, "dnssec-check-unsigned\n");
} else {
fprintf(fp, "dnssec-check-unsigned=no\n");
}
}
#endif
if (nvram_matchi("dnssec_proxy", 1)) {
fprintf(fp, "proxy-dnssec\n");
}
if (nvram_matchi("dnsmasq_rc", 1)) {
fprintf(fp, "dhcp-rapid-commit\n");
}
/* stop dns rebinding for private addresses */
if (nvram_matchi("dnsmasq_no_dns_rebind", 1)) {
fprintf(fp, "stop-dns-rebind\n");
}
if (nvram_matchi("dnsmasq_add_mac", 1)) {
fprintf(fp, "add-mac\n");
}
#ifdef HAVE_PRIVOXY
if (nvram_matchi("privoxy_enable", 1)) {
if (nvram_matchi("privoxy_transp_enable", 1)) {
fprintf(fp, "dhcp-option=252,http://config.privoxy.org/wpad.dat\n");
} else {
fprintf(fp, "dhcp-option=252,http://%s/wpad.dat\n", nvram_safe_get("lan_ipaddr"));
}
} else {
fprintf(fp, "dhcp-option=252,\"\\n\"\n");
}
#else
fprintf(fp, "dhcp-option=252,\"\\n\"\n");
#endif
char *addoptions = nvram_safe_get("dnsmasq_options");
#ifdef HAVE_SMARTDNS
if (nvram_matchi("smartdns", 1) && !nvram_matchi("dnssec", 1))
fprintf(fp, "cache-size=0\n");
else
#endif
if (!strstr(addoptions, "cache-size="))
fprintf(fp, "cache-size=%d\n", nvram_default_geti("dnsmasq_cachesize", 1500));
if (!strstr(addoptions, "dns-forward-max="))
fprintf(fp, "dns-forward-max=%d\n", nvram_default_geti("dnsmasq_forward_max", 150));
if (nvram_matchi("dnsmasq_ms_telemetry", 1))
add_ms_telemetry(fp);
if (nvram_matchi("dnsmasq_ubnt_telemetry", 1))
add_ubnt_telemetry(fp);
// write canarydomain to stop browsers from using DoH when DoT redirection is active
if (nvram_matchi("dns_redirectdot", 1)) {
fprintf(fp, "address=/use-application-dns.net/mask.icloud.com/mask-h2.icloud.com/\n");
}
/*
* Additional options
*/
fwritenvram("dnsmasq_options", fp);
fclose(fp);
dns_to_resolv();
chmod("/etc/lease_update.sh", 0700);
log_eval("dnsmasq", "-u", "root", "-g", "root", "-C", getdefaultconfig("dnsmasq", path, sizeof(path), "dnsmasq.conf"));
cprintf("done\n");
return;
}
void restart_dnsmasq(void)
{
stop_dnsmasq();
start_dnsmasq();
}
void stop_dnsmasq(void)
{
#ifdef HAVE_SMARTDNS
stop_smartdns();
#endif
if (stop_process("dnsmasq", "daemon")) {
unlink("/tmp/resolv.dnsmasq");
}
}
#endif
#ifdef TEST
int main(int argc, char *argv[])
{
start_dnsmasq();
}
#endif