void netman_static_ifup(NetmanIfConfig *config)
{
printf("[static] attempting configuration of %s\n", config->ifname);
StaticConfig *statconf = (StaticConfig*) config->data;
// write the DNS servers
char dnspath[256];
sprintf(dnspath, "/run/dns/ipv4/%s.if", config->ifname);
FILE *fp = fopen(dnspath, "w");
if (fp == NULL)
{
fprintf(stderr, "[static] WARNING: failed to open %s: cannot configure DNS servers!\n", dnspath);
}
else
{
size_t i;
fprintf(fp, "# DNS servers from static configuration\n");
for (i=0; i<statconf->dnscount; i++)
{
char buffer[INET_ADDRSTRLEN];
inet_ntop(AF_INET, &statconf->dns[i], buffer, INET_ADDRSTRLEN);
fprintf(fp, "%s\n", buffer);
};
fclose(fp);
};
// remove all routes
if (_glidix_route_clear(AF_INET, config->ifname) != 0)
{
fprintf(stderr, "[static] cannot clear IPv4 routes of %s: %s\n", config->ifname, strerror(errno));
return;
};
// assign addresses
if (_glidix_netconf_addr(AF_INET, config->ifname, statconf->addrs, sizeof(IPNetIfAddr4)*statconf->addrcount) != 0)
{
fprintf(stderr, "[static] failed to configure %s: %s\n", config->ifname, strerror(errno));
return;
};
// add all routes
int i;
for (i=0; i<statconf->routecount; i++)
{
if (_glidix_route_add(AF_INET, -1, &statconf->routes[i]))
{
fprintf(stderr, "[static] failed to add route to %s: %s\n", config->ifname, strerror(errno));
_glidix_netconf_addr(AF_INET, config->ifname, NULL, 0);
_glidix_route_clear(AF_INET, config->ifname);
unlink(dnspath);
return;
};
};
// wait until we're put down
free(statconf);
while (netman_running()) pause();
printf("[static] removing configuration\n");
_glidix_netconf_addr(AF_INET, config->ifname, NULL, 0);
_glidix_route_clear(AF_INET, config->ifname);
unlink(dnspath);
};
int mainUtil(int argc, char *argv[])
{
if (strcmp(argv[1], "add") == 0)
{
if (argc < 4)
{
fprintf(stderr, "USAGE:\t%s add subnet interface [-g gateway] [-i index] [-6]\n", argv[0]);
fprintf(stderr, "\tAdds an entry for the specified subnet to the routing table. If the\n");
fprintf(stderr, "\tnetwork size is not given, adds just the specified address. You can\n");
fprintf(stderr, "\talso optionally specify a gateway, as well as the position within the\n");
fprintf(stderr, "\tinterface's routing table. The '-6' indicates that the route is IPv6.\n");
return 1;
};
char subnet[INET6_ADDRSTRLEN+4];
char gateway[INET6_ADDRSTRLEN] = "";
char ifname[16];
int pos = -1;
int family = AF_INET;
if (strlen(argv[2]) > (INET6_ADDRSTRLEN+4))
{
fprintf(stderr, "%s: invalid address or subnet: %s\n", argv[0], argv[2]);
return 1;
};
if (strlen(argv[3]) > 15)
{
fprintf(stderr, "%s: invalid interface name: %s\n", argv[0], argv[3]);
return 1;
};
strcpy(subnet, argv[2]);
strcpy(ifname, argv[3]);
int i;
for (i=4; i<argc; i++)
{
if (strcmp(argv[i], "-g") == 0)
{
i++;
if (strlen(argv[i]) > 15)
{
fprintf(stderr, "%s: invalid gateway: %s\n", argv[0], argv[i]);
return 1;
};
strcpy(gateway, argv[i]);
}
else if (strcmp(argv[i], "-i") == 0)
{
i++;
pos = atoi(argv[i]);
}
else if (strcmp(argv[i], "-6") == 0)
{
family = AF_INET6;
}
else
{
fprintf(stderr, "%s: unrecognised command-line option: %s\n", argv[0], argv[i]);
return 1;
};
};
if (gateway[0] == 0)
{
if (family == AF_INET)
{
strcpy(gateway, "0.0.0.0");
}
else
{
strcpy(gateway, "::");
};
};
_glidix_gen_route genroute;
_glidix_in_route *inroute = (_glidix_in_route*) &genroute;
_glidix_in6_route *in6route = (_glidix_in6_route*) &genroute;
if (family == AF_INET) strcpy(inroute->ifname, ifname);
else strcpy(in6route->ifname, ifname);
if (family == AF_INET) memset(&inroute->mask, 0xFF, 4);
else memset(&in6route->mask, 0xFF, 16);
char *slashpos = strchr(subnet, '/');
if (slashpos != NULL)
{
*slashpos = 0;
int netsize = atoi(slashpos+1);
int maxNetSize = 32;
if (family == AF_INET6) maxNetSize = 128;
if ((netsize < 0) || (netsize > maxNetSize))
{
fprintf(stderr, "%s: invalid subnet size: /%d\n", argv[0], netsize);
return 1;
};
uint8_t *out;
if (family == AF_INET) out = (uint8_t*) &inroute->mask;
else out = (uint8_t*) &in6route->mask;
if (family == AF_INET) memset(out, 0, 4);
else memset(out, 0, 16);
while (netsize >= 8)
{
*out++ = 0xFF;
netsize -= 8;
};
if (netsize > 0)
{
// number of bits at the end that should be 0
int zeroBits = 8 - netsize;
// make a number which has this many '1's at the end, and then NOT it
*out = ~((1 << zeroBits)-1);
};
};
if (family == AF_INET)
{
if (inet_pton(AF_INET, subnet, &inroute->dest) != 1)
{
fprintf(stderr, "%s: failed to parse address %s: %s\n", argv[0], subnet, strerror(errno));
return 1;
};
if (inet_pton(AF_INET, gateway, &inroute->gateway) != 1)
{
fprintf(stderr, "%s: failed to parse address %s: %s\n", argv[0], gateway, strerror(errno));
return 1;
};
}
else
{
if (inet_pton(AF_INET6, subnet, &in6route->dest) != 1)
{
fprintf(stderr, "%s: failed to parse address %s: %s\n", argv[0], subnet, strerror(errno));
return 1;
};
if (inet_pton(AF_INET6, gateway, &in6route->gateway) != 1)
{
fprintf(stderr, "%s: failed to parse address %s: %s\n", argv[0], gateway, strerror(errno));
return 1;
};
};
if (family == AF_INET) inroute->flags = 0;
else in6route->flags = 0;
if (_glidix_route_add(family, pos, &genroute) != 0)
{
fprintf(stderr, "%s: failed to add the route: %s\n", argv[0], strerror(errno));
return 1;
};
return 0;
}
else if (strcmp(argv[1], "clear") == 0)
{
if (argc != 3)
{
fprintf(stderr, "USAGE:\t%s clear <interface>\n", argv[0]);
fprintf(stderr, "\tDelete all IPv4 routes of an interface.\n");
fprintf(stderr, "\tSee also: clear6\n");
return 1;
};
if (_glidix_route_clear(AF_INET, argv[2]) != 0)
{
fprintf(stderr, "%s: cannot clear %s: %s\n", argv[0], argv[2], strerror(errno));
return 1;
};
return 0;
}
else if (strcmp(argv[1], "clear6") == 0)
{
if (argc != 3)
{
fprintf(stderr, "USAGE:\t%s clear6 <interface>\n", argv[0]);
fprintf(stderr, "\tDelete all IPv6 routes of an interface.\n");
fprintf(stderr, "\tSee also: clear\n");
return 1;
};
if (_glidix_route_clear(AF_INET6, argv[2]) != 0)
{
fprintf(stderr, "%s: cannot clear6 %s: %s\n", argv[0], argv[2], strerror(errno));
return 1;
};
return 0;
}
else
{
fprintf(stderr, "%s: unknown command: %s\n", argv[0], argv[1]);
return 1;
};
};
