Pi-Hole/dnsmasq
1
0
Fork 0
mirror of https://github.com/pi-hole/dnsmasq.git synced 2025-12-19 18:28:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

import of dnsmasq-2.9.tar.gz

Browse Source
This commit is contained in:
Simon Kelley
2004-06-22 20:23:33 +01:00
parent a222641cb0
commit de37951cf4
15 changed files with 470 additions and 235 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
src/dnsmasq.c
View File

@@ -37,15 +37,16 @@ int main (int argc, char **argv)
int maxleases = MAXLEASES;
int query_port = 0;
int first_loop = 1;
int bind_fallback = 0;
unsigned long local_ttl = 0;
unsigned int options, min_leasetime;
char *runfile = RUNFILE;
time_t resolv_changed = 0;
time_t now, last = 0;
struct irec *interfaces = NULL;
struct listener *listener, *listeners;
struct listener *listener, *listeners = NULL;
struct doctor *doctors = NULL;
char *mxname = NULL;
struct mx_record *mxnames = NULL;
char *mxtarget = NULL;
char *lease_file = NULL;
char *addn_hosts = NULL;
@@ -106,7 +107,7 @@ int main (int argc, char **argv)
packet = safe_malloc(DNSMASQ_PACKETSZ);
dhcp_next_server.s_addr = 0;
options = read_opts(argc, argv, dnamebuff, &resolv, &mxname, &mxtarget, &lease_file,
options = read_opts(argc, argv, dnamebuff, &resolv, &mxnames, &mxtarget, &lease_file,
&username, &groupname, &domain_suffix, &runfile,
&if_names, &if_addrs, &if_except, &bogus_addr,
&serv_addrs, &cachesize, &port, &query_port, &local_ttl, &addn_hosts,
@@ -124,18 +125,41 @@ int main (int argc, char **argv)
die("ISC dhcpd integration not available: set HAVE_ISC_READER in src/config.h", NULL);
#endif
#ifndef HAVE_UDP_SRC_DST
/* if we cannot support binding the wildcard address, set the "bind only
interfaces in use" option */
options |= OPT_NOWILD;
#endif
interfaces = enumerate_interfaces(&if_names, &if_addrs, if_except, port);
if (options & OPT_NOWILD)
listeners = create_bound_listeners(interfaces);
else
listeners = create_wildcard_listeners(port);
if (!(options & OPT_NOWILD) && !(listeners = create_wildcard_listeners(port)))
{
bind_fallback = 1;
options |= OPT_NOWILD;
}
if (options & OPT_NOWILD)
{
struct iname *if_tmp;
listeners = create_bound_listeners(interfaces);
for (if_tmp = if_names; if_tmp; if_tmp = if_tmp->next)
if (if_tmp->name && !if_tmp->used)
die("unknown interface %s", if_tmp->name);
for (if_tmp = if_addrs; if_tmp; if_tmp = if_tmp->next)
if (!if_tmp->used)
{
char addrbuff[ADDRSTRLEN];
#ifdef HAVE_IPV6
if (if_tmp->addr.sa.sa_family == AF_INET)
inet_ntop(AF_INET, &if_tmp->addr.in.sin_addr,
addrbuff, ADDRSTRLEN);
else
inet_ntop(AF_INET6, &if_tmp->addr.in6.sin6_addr,
addrbuff, ADDRSTRLEN);
#else
strcpy(addrbuff, inet_ntoa(if_tmp->addr.in.sin_addr));
#endif
die("no interface with address %s", addrbuff);
}
}
forward_init(1);
cache_init(cachesize, options & OPT_LOG);
@@ -148,6 +172,15 @@ int main (int argc, char **argv)
if (dhcp)
{
#if !defined(IP_PKTINFO) && !defined(IP_RECVIF)
int c;
struct iname *tmp;
for (c = 0, tmp = if_names; tmp; tmp = tmp->next)
if (!tmp->isloop)
c++;
if (c != 1)
die("must set exactly one interface on broken systems without IP_RECVIF", NULL);
#endif
dhcp_init(&dhcpfd, &dhcp_raw_fd);
leasefd = lease_init(lease_file, domain_suffix, dnamebuff, packet, now, maxleases);
}
@@ -228,12 +261,9 @@ int main (int argc, char **argv)
else
syslog(LOG_INFO, "started, version %s cache disabled", VERSION);
if (options & OPT_LOCALMX)
syslog(LOG_INFO, "serving MX record for local hosts target %s", mxtarget);
else if (mxname)
syslog(LOG_INFO, "serving MX record for mailhost %s target %s",
mxname, mxtarget);
if (bind_fallback)
syslog(LOG_WARNING, "setting --bind-interfaces option because if OS limitations");
for (dhcp_tmp = dhcp; dhcp_tmp; dhcp_tmp = dhcp_tmp->next)
{
strcpy(dnamebuff, inet_ntoa(dhcp_tmp->start));
@@ -256,8 +286,9 @@ int main (int argc, char **argv)
if (getuid() == 0 || geteuid() == 0)
syslog(LOG_WARNING, "failed to drop root privs");
servers = last_server = check_servers(serv_addrs, interfaces, &sfds);
servers = check_servers(serv_addrs, interfaces, &sfds);
last_server = NULL;
while (sigterm == 0)
{
fd_set rset;
@@ -275,9 +306,11 @@ int main (int argc, char **argv)
lease_update_dns();
}
if (resolv && (options & OPT_NO_POLL))
servers = last_server =
check_servers(reload_servers(resolv->name, dnamebuff, servers, query_port),
interfaces, &sfds);
{
servers = check_servers(reload_servers(resolv->name, dnamebuff, servers, query_port),
interfaces, &sfds);
last_server = NULL;
}
sighup = 0;
}
@@ -373,7 +406,7 @@ int main (int argc, char **argv)
else
{
res->logged = 0;
if (statbuf.st_mtime > last_change)
if (difftime(statbuf.st_mtime, last_change) > 0.0)
{
last_change = statbuf.st_mtime;
latest = res;
@@ -382,20 +415,20 @@ int main (int argc, char **argv)
res = res->next;
}
if (latest && last_change > resolv_changed)
if (latest && difftime(last_change, resolv_changed) > 0.0)
{
resolv_changed = last_change;
servers = last_server =
check_servers(reload_servers(latest->name, dnamebuff, servers, query_port),
interfaces, &sfds);
servers = check_servers(reload_servers(latest->name, dnamebuff, servers, query_port),
interfaces, &sfds);
last_server = NULL;
}
}
}
for (serverfdp = sfds; serverfdp; serverfdp = serverfdp->next)
if (FD_ISSET(serverfdp->fd, &rset))
last_server = reply_query(serverfdp->fd, options, packet, now,
dnamebuff, last_server, bogus_addr, doctors);
last_server = reply_query(serverfdp, options, packet, now,
dnamebuff, servers, last_server, bogus_addr, doctors);
if (dhcp && FD_ISSET(dhcpfd, &rset))
dhcp_packet(dhcp, packet, dhcp_options, dhcp_configs, dhcp_vendors,
@@ -406,7 +439,7 @@ int main (int argc, char **argv)
for (listener = listeners; listener; listener = listener->next)
if (FD_ISSET(listener->fd, &rset))
last_server = receive_query(listener, packet,
mxname, mxtarget, options, now, local_ttl, dnamebuff,
mxnames, mxtarget, options, now, local_ttl, dnamebuff,
if_names, if_addrs, if_except, last_server, servers);
}