EAPI int
ecore_con_info_get(Ecore_Con_Server *svr,
Ecore_Con_Info_Cb done_cb,
void *data,
struct addrinfo *hints)
{
Ecore_Con_CAres *cares;
int ai_family = AF_INET6;
cares = calloc(1, sizeof(Ecore_Con_CAres));
if (!cares)
return 0;
cares->svr = svr;
cares->done_cb = done_cb;
cares->data = data;
if (hints)
{
ai_family = hints->ai_family;
memcpy(&cares->hints, hints, sizeof(struct addrinfo));
}
if (inet_pton(AF_INET, svr->name, &cares->addr.v4) == 1)
{
cares->byaddr = EINA_TRUE;
cares->isv6 = EINA_FALSE;
ares_gethostbyaddr(info_channel, &cares->addr.v4,
sizeof(cares->addr.v4),
AF_INET,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
else if (inet_pton(AF_INET6, svr->name, &cares->addr.v6) == 1)
{
cares->byaddr = EINA_TRUE;
cares->isv6 = EINA_TRUE;
ares_gethostbyaddr(info_channel, &cares->addr.v6,
sizeof(cares->addr.v6),
AF_INET6,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
else
{
cares->byaddr = EINA_FALSE;
ares_gethostbyname(info_channel, svr->name, ai_family,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
svr->infos = eina_list_append(svr->infos, cares);
return 1;
}
int main(int argc, char **argv) {
WSADATA wsa;
subnet sub;
int ret, x;
WSAStartup(0x22, &wsa);
fprintf(stderr, "CIDR Reverse DNS - William Welna ([email protected])\n\n");
if(argc != 3) {
fprintf(stderr, "No Range Specified and/or no output file or too many arguments\n");
fprintf(stderr, "Usage: %s 127.0.0.0/24 localrdns.txt\n", argv[0]);
exit(0);
}
if(ret=ares_library_init(ARES_LIB_INIT_ALL)!=ARES_SUCCESS) {
fprintf(stderr, "ares_library_init() failed %i\n", ret);
exit(0);
}
if(ret=ares_init(&ares_chan)!=ARES_SUCCESS) {
fprintf(stderr, "ares_init() failed %i\n", ret);
exit(0);
}
calculate_subnet(argv[1], &sub);
build_ips(sub.addr_s, sub.addr_e);
global_total = sub.total_ips;
for(x=0; x < 60 && IPS_P != NULL; ++x, IPS_P=IPS_P->n)
ares_gethostbyaddr(ares_chan, &IPS_P->ip, 4, AF_INET, rdns_callback, IPS_P);
fprintf(stderr, "Resolving %s to %s (%i)\n", sub.ip_s, sub.ip_e, sub.total_ips);
tehloop();
dump_results(argv[2]);
return 0;
}
void rdns_callback(void *arg, int status, int timeouts, struct hostent *host) {
list_struct *p = (list_struct *)arg;
if(status == ARES_SUCCESS) {
strcpy(p->hostname, host->h_name);
} else {
p->hostname[0] = '.';
}
++global_counter;
if(IPS_P) { // when one is finished add another to the channel to be resolved
ares_gethostbyaddr(ares_chan, &IPS_P->ip, 4, AF_INET, rdns_callback, IPS_P);
IPS_P=IPS_P->n;
}
}
static PyObject *
DNSResolver_func_gethostbyaddr(DNSResolver *self, PyObject *args, PyObject *kwargs)
{
char *name;
int family, length;
void *address;
struct in_addr addr4;
struct in6_addr addr6;
ares_cb_data_t *cb_data;
PyObject *callback;
if (!PyArg_ParseTuple(args, "sO:gethostbyaddr", &name, &callback)) {
return NULL;
}
if (!PyCallable_Check(callback)) {
PyErr_SetString(PyExc_TypeError, "a callable is required");
return NULL;
}
if (uv_inet_pton(AF_INET, name, &addr4) == 1) {
family = AF_INET;
length = sizeof(struct in_addr);
address = (void *)&addr4;
} else if (uv_inet_pton(AF_INET6, name, &addr6) == 1) {
family = AF_INET6;
length = sizeof(struct in6_addr);
address = (void *)&addr6;
} else {
PyErr_SetString(PyExc_ValueError, "invalid IP address");
return NULL;
}
cb_data = (ares_cb_data_t*) PyMem_Malloc(sizeof *cb_data);
if (!cb_data) {
return PyErr_NoMemory();
}
Py_INCREF(callback);
cb_data->resolver = self;
cb_data->cb = callback;
ares_gethostbyaddr(self->channel, address, length, family, &host_cb, (void *)cb_data);
Py_RETURN_NONE;
}
static PyObject *
Channel_func_gethostbyaddr(Channel *self, PyObject *args)
{
char *name;
int family, length;
void *address;
struct in_addr addr4;
struct in6_addr addr6;
PyObject *callback;
CHECK_CHANNEL(self);
if (!PyArg_ParseTuple(args, "sO:gethostbyaddr", &name, &callback)) {
return NULL;
}
if (!PyCallable_Check(callback)) {
PyErr_SetString(PyExc_TypeError, "a callable is required");
return NULL;
}
if (ares_inet_pton(AF_INET, name, &addr4) == 1) {
length = sizeof(struct in_addr);
address = (void *)&addr4;
family = AF_INET;
} else if (ares_inet_pton(AF_INET6, name, &addr6) == 1) {
length = sizeof(struct in6_addr);
address = (void *)&addr6;
family = AF_INET6;
} else {
PyErr_SetString(PyExc_ValueError, "invalid IP address");
return NULL;
}
Py_INCREF(callback);
ares_gethostbyaddr(self->channel, address, length, family, &host_cb, (void *)callback);
Py_RETURN_NONE;
}
int gethostbyaddr_with_ares(const void *addr, int addrlen, int af,
struct hostent *ret_h, char *buf, size_t &buflen,
struct hostent **result, int *h_errnop)
{
int err = 0;
if (!h_errnop) h_errnop = &err;
cares_async_context ctx;
ctx.called = false;
ctx.errnop = h_errnop;
ctx.ret = 0;
ctx.result = result;
ctx.buf = buf;
ctx.buflen = &buflen;
ares_channel c;
ares_init(&c);
ares_gethostbyaddr(c, addr, addrlen, af,
[](void * arg, int status, int timeouts, struct hostent *hostent)
{
cares_async_context *ctx = (cares_async_context *)arg;
ctx->called = true;
if (status != ARES_SUCCESS) {
*ctx->result = nullptr;
switch (status) {
case ARES_ENODATA:
*ctx->errnop = NO_DATA;
break;
case ARES_EBADNAME:
*ctx->errnop = NO_RECOVERY;
break;
case ARES_ENOTFOUND:
default:
*ctx->errnop = HOST_NOT_FOUND;
break;
}
ctx->ret = -1;
return ;
}
if (!hostent_dup(hostent, *ctx->result, ctx->buf, *ctx->buflen)) {
*ctx->result = nullptr;
*ctx->errnop = ENOEXEC; // 奇怪的错误码.
ctx->ret = -1;
return ;
}
*ctx->errnop = 0;
ctx->ret = 0;
}, &ctx);
fd_set readers, writers;
FD_ZERO(&readers);
FD_ZERO(&writers);
int nfds = ares_fds(c, &readers, &writers);
if (nfds) {
struct timeval tv, *tvp;
tvp = ares_timeout(c, NULL, &tv);
int count = select(nfds, &readers, &writers, NULL, tvp);
if (count > 0) {
ares_process(c, &readers, &writers);
}
}
if (ctx.called)
return ctx.ret;
// No yet invoke callback.
*result = nullptr;
*h_errnop = HOST_NOT_FOUND; // TODO
return -1;
}
void ares_getnameinfo(ares_channel channel, const struct sockaddr *sa,
ares_socklen_t salen,
int flags, ares_nameinfo_callback callback, void *arg)
{
struct sockaddr_in *addr = NULL;
struct sockaddr_in6 *addr6 = NULL;
struct nameinfo_query *niquery;
unsigned int port = 0;
/* Verify the buffer size */
if (salen == sizeof(struct sockaddr_in))
{
addr = (struct sockaddr_in *)sa;
port = addr->sin_port;
}
else if (salen == sizeof(struct sockaddr_in6))
{
addr6 = (struct sockaddr_in6 *)sa;
port = addr6->sin6_port;
}
else
{
callback(arg, ARES_ENOTIMP, 0, NULL, NULL);
return;
}
/* If neither, assume they want a host */
if (!(flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST))
flags |= ARES_NI_LOOKUPHOST;
/* All they want is a service, no need for DNS */
if ((flags & ARES_NI_LOOKUPSERVICE) && !(flags & ARES_NI_LOOKUPHOST))
{
char buf[33], *service;
service = lookup_service((unsigned short)(port & 0xffff),
flags, buf, sizeof(buf));
callback(arg, ARES_SUCCESS, 0, NULL, service);
return;
}
/* They want a host lookup */
if ((flags & ARES_NI_LOOKUPHOST))
{
/* A numeric host can be handled without DNS */
if ((flags & ARES_NI_NUMERICHOST))
{
char ipbuf[IPBUFSIZ];
char srvbuf[33];
char *service = NULL;
ipbuf[0] = 0;
/* Specifying not to lookup a host, but then saying a host
* is required has to be illegal.
*/
if (flags & ARES_NI_NAMEREQD)
{
callback(arg, ARES_EBADFLAGS, 0, NULL, NULL);
return;
}
if (salen == sizeof(struct sockaddr_in6))
{
ares_inet_ntop(AF_INET6, &addr6->sin6_addr, ipbuf, IPBUFSIZ);
/* If the system supports scope IDs, use it */
#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
append_scopeid(addr6, flags, ipbuf, sizeof(ipbuf));
#endif
}
else
{
ares_inet_ntop(AF_INET, &addr->sin_addr, ipbuf, IPBUFSIZ);
}
/* They also want a service */
if (flags & ARES_NI_LOOKUPSERVICE)
service = lookup_service((unsigned short)(port & 0xffff),
flags, srvbuf, sizeof(srvbuf));
callback(arg, ARES_SUCCESS, 0, ipbuf, service);
return;
}
/* This is where a DNS lookup becomes necessary */
else
{
niquery = malloc(sizeof(struct nameinfo_query));
if (!niquery)
{
callback(arg, ARES_ENOMEM, 0, NULL, NULL);
return;
}
niquery->callback = callback;
niquery->arg = arg;
niquery->flags = flags;
niquery->timeouts = 0;
if (sa->sa_family == AF_INET)
{
niquery->family = AF_INET;
memcpy(&niquery->addr.addr4, addr, sizeof(addr));
ares_gethostbyaddr(channel, &addr->sin_addr, sizeof(struct in_addr), AF_INET,
nameinfo_callback, niquery);
}
else
{
niquery->family = AF_INET6;
memcpy(&niquery->addr.addr6, addr6, sizeof(addr6));
ares_gethostbyaddr(channel, &addr6->sin6_addr, sizeof(struct in6_addr), AF_INET6,
nameinfo_callback, niquery);
}
}
}
}
int main(int argc, char **argv)
{
struct ares_options options;
int optmask = 0;
ares_channel channel;
int status, nfds, c, addr_family = AF_INET;
fd_set read_fds, write_fds;
struct timeval *tvp, tv;
struct in_addr addr4;
struct ares_in6_addr addr6;
#ifdef USE_WINSOCK
WORD wVersionRequested = MAKEWORD(USE_WINSOCK,USE_WINSOCK);
WSADATA wsaData;
WSAStartup(wVersionRequested, &wsaData);
#endif
memset(&options, 0, sizeof(options));
status = ares_library_init(ARES_LIB_INIT_ALL);
if (status != ARES_SUCCESS)
{
fprintf(stderr, "ares_library_init: %s\n", ares_strerror(status));
return 1;
}
while ((c = ares_getopt(argc,argv,"dt:hs:")) != -1)
{
switch (c)
{
case 'd':
#ifdef WATT32
dbug_init();
#endif
break;
case 's':
optmask |= ARES_OPT_DOMAINS;
options.ndomains++;
options.domains = realloc(options.domains,
options.ndomains * sizeof(char *));
options.domains[options.ndomains - 1] = strdup(optarg);
break;
case 't':
if (!strcasecmp(optarg,"a"))
addr_family = AF_INET;
else if (!strcasecmp(optarg,"aaaa"))
addr_family = AF_INET6;
else if (!strcasecmp(optarg,"u"))
addr_family = AF_UNSPEC;
else
usage();
break;
case 'h':
default:
usage();
break;
}
}
argc -= optind;
argv += optind;
if (argc < 1)
usage();
status = ares_init_options(&channel, &options, optmask);
if (status != ARES_SUCCESS)
{
fprintf(stderr, "ares_init: %s\n", ares_strerror(status));
return 1;
}
/* Initiate the queries, one per command-line argument. */
for ( ; *argv; argv++)
{
if (ares_inet_pton(AF_INET, *argv, &addr4) == 1)
{
ares_gethostbyaddr(channel, &addr4, sizeof(addr4), AF_INET, callback,
*argv);
}
else if (ares_inet_pton(AF_INET6, *argv, &addr6) == 1)
{
ares_gethostbyaddr(channel, &addr6, sizeof(addr6), AF_INET6, callback,
*argv);
}
else
{
ares_gethostbyname(channel, *argv, addr_family, callback, *argv);
}
}
/* Wait for all queries to complete. */
for (;;)
{
int res;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
nfds = ares_fds(channel, &read_fds, &write_fds);
if (nfds == 0)
break;
tvp = ares_timeout(channel, NULL, &tv);
res = select(nfds, &read_fds, &write_fds, NULL, tvp);
if (-1 == res)
break;
ares_process(channel, &read_fds, &write_fds);
}
ares_destroy(channel);
ares_library_cleanup();
#ifdef USE_WINSOCK
WSACleanup();
#endif
return 0;
}
void p_dns_gethostbyaddr(const void *address, int addrlen, int family, dns_host_callback callback, void *arg)
{
pcontext;
ares_gethostbyaddr(resolver, address, addrlen, family, (ares_host_callback)callback, arg);
}
EAPI int
ecore_con_info_get(Ecore_Con_Server *obj,
Ecore_Con_Info_Cb done_cb,
void *data,
struct addrinfo *hints)
{
Ecore_Con_Server_Data *svr = eo_data_scope_get(obj, ECORE_CON_SERVER_CLASS);
Ecore_Con_CAres *cares;
#ifdef HAVE_IPV6
int ai_family = AF_INET6;
#else
int ai_family = AF_INET;
#endif
cares = calloc(1, sizeof(Ecore_Con_CAres));
if (!cares)
return 0;
cares->svr = obj;
cares->done_cb = done_cb;
cares->data = data;
if (hints)
{
ai_family = hints->ai_family;
memcpy(&cares->hints, hints, sizeof(struct addrinfo));
}
if (inet_pton(AF_INET, svr->ecs ? svr->ecs->ip : svr->name, &cares->addr.v4) == 1)
{
cares->byaddr = EINA_TRUE;
cares->isv6 = EINA_FALSE;
ares_gethostbyaddr(info_channel, &cares->addr.v4,
sizeof(cares->addr.v4),
AF_INET,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
#ifdef HAVE_IPV6
else if (inet_pton(AF_INET6, svr->ecs ? svr->ecs->ip : svr->name, &cares->addr.v6) == 1)
{
cares->byaddr = EINA_TRUE;
cares->isv6 = EINA_TRUE;
ares_gethostbyaddr(info_channel, &cares->addr.v6,
sizeof(cares->addr.v6),
AF_INET6,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
#endif
else
{
cares->byaddr = EINA_FALSE;
ares_gethostbyname(info_channel, svr->ecs ? svr->ecs->ip : svr->name, ai_family,
(ares_host_callback)_ecore_con_info_ares_host_cb,
cares);
}
svr->infos = eina_list_append(svr->infos, cares);
return 1;
}