/*
This file is part of GNUnet.
- (C) 2011-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2011-2013 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @brief GNU Name System resolver logic
* @author Martin Schanzenbach
* @author Christian Grothoff
- *
- * TODO:
- * - GNS: handle special SRV names --- no delegation, direct lookup;
- * can likely be done in 'resolver_lookup_get_next_label'. (#3003)
- * - revocation checks (use CORE-level broadcasts!), (#3004)
- * - DNAME support (#3005)
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_dnsstub_lib.h"
#include "gnunet_dht_service.h"
-#include "gnunet_namestore_service.h"
+#include "gnunet_gnsrecord_lib.h"
+#include "gnunet_namecache_service.h"
#include "gnunet_dns_service.h"
#include "gnunet_resolver_service.h"
+#include "gnunet_revocation_service.h"
#include "gnunet_dnsparser_lib.h"
+#include "gnunet_tun_lib.h"
#include "gnunet_gns_service.h"
#include "gns.h"
+#include "gnunet-service-gns.h"
#include "gnunet-service-gns_resolver.h"
-#include "gnunet-service-gns_shorten.h"
#include "gnunet_vpn_service.h"
/**
* Default timeout for DNS lookups.
*/
-#define DNS_LOOKUP_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
+#define DNS_LOOKUP_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 15)
/**
* Default timeout for VPN redirections.
*/
char *label;
+ /**
+ * label/name suggested for shortening to the authority
+ */
+ char *suggested_shortening_label;
+
+ /**
+ * Do we already try to shorten this authority?
+ */
+ int shortening_started;
+
/**
* #GNUNET_YES if the authority was a GNS authority,
* #GNUNET_NO if the authority was a DNS authority.
/**
* The zone of the GNS authority
*/
- struct GNUNET_CRYPTO_EccPublicSignKey gns_authority;
+ struct GNUNET_CRYPTO_EcdsaPublicKey gns_authority;
struct
{
/**
* Expiration time for the DNS record, 0 if we didn't
- * get anything useful (i.e. 'gethostbyname' was used).
+ * get anything useful (i.e. 'gethostbyname()' was used).
*/
uint64_t expiration_time;
/**
- * Number of bytes in 'data'.
+ * Number of bytes in @e data.
*/
size_t data_size;
struct GNUNET_VPN_RedirectionRequest *vpn_request;
/**
- * Number of records serialized in 'rd_data'.
+ * Number of records serialized in @e rd_data.
*/
unsigned int rd_count;
char *rd_data;
/**
- * Number of bytes in 'rd_data'.
+ * Number of bytes in @e rd_data.
*/
size_t rd_data_size;
};
+/**
+ * Information we keep during the resolution of an
+ * IP address for a DNS server while handling a
+ * GNS2DNS record.
+ */
+struct Gns2DnsContext
+{
+
+ /**
+ * DNS domain in which the resolution will continue
+ * (first part of the GNS2DNS record).
+ */
+ char *ns;
+
+ /**
+ * Handle for the resolution of the IP part of the
+ * GNS2DNS record. Will return to us the addresses
+ * of the DNS resolver to use.
+ */
+ struct GNS_ResolverHandle *rh;
+
+ /**
+ * Handle for DNS resolution of the DNS nameserver.
+ */
+ struct GNUNET_RESOLVER_RequestHandle *dns_rh;
+};
+
+
/**
* Handle to a currenty pending resolution. On result (positive or
* negative) the #GNS_ResultProcessor is called.
/**
* The top-level GNS authoritative zone to query
*/
- struct GNUNET_CRYPTO_EccPublicSignKey authority_zone;
+ struct GNUNET_CRYPTO_EcdsaPublicKey authority_zone;
/**
* called when resolution phase finishes
GNS_ResultProcessor proc;
/**
- * closure passed to proc
+ * closure passed to @e proc
*/
void* proc_cls;
+ /**
+ * Handle used during GNS2DNS resolution for looking up the
+ * IP address of the DNS server.
+ */
+ struct Gns2DnsContext *g2dc;
+
/**
* Handle for DHT lookups. should be NULL if no lookups are in progress
*/
struct GNUNET_RESOLVER_RequestHandle *std_resolve;
/**
- * Pending Namestore lookup task
+ * Pending Namecache lookup task
+ */
+ struct GNUNET_NAMECACHE_QueueEntry *namecache_qe;
+
+ /**
+ * Pending revocation check.
*/
- struct GNUNET_NAMESTORE_QueueEntry *namestore_qe;
+ struct GNUNET_REVOCATION_Query *rev_check;
/**
* Heap node associated with this lookup. Used to limit number of
*/
struct AuthorityChain *ac_tail;
- /**
- * Private key of the shorten zone, NULL to not shorten.
- */
- struct GNUNET_CRYPTO_EccPrivateKey *shorten_key;
-
/**
* ID of a task associated with the resolution process.
*/
- GNUNET_SCHEDULER_TaskIdentifier task_id;
+ struct GNUNET_SCHEDULER_Task *task_id;
/**
* The name to resolve
/**
* Use only cache
*/
- int only_cached;
+ enum GNUNET_GNS_LocalOptions options;
+
+ /**
+ * For SRV and TLSA records, the number of the
+ * protocol specified in the name. 0 if no protocol was given.
+ */
+ int protocol;
+
+ /**
+ * For SRV and TLSA records, the number of the
+ * service specified in the name. 0 if no service was given.
+ */
+ int service;
/**
* Desired type for the resolution.
/**
* Pending Namestore caching task.
*/
- struct GNUNET_NAMESTORE_QueueEntry *namestore_qe_cache;
+ struct GNUNET_NAMECACHE_QueueEntry *namecache_qe_cache;
};
/**
- * Our handle to the namestore service
+ * Our handle to the namecache service
*/
-static struct GNUNET_NAMESTORE_Handle *namestore_handle;
+static struct GNUNET_NAMECACHE_Handle *namecache_handle;
/**
* Our handle to the vpn service
*/
static struct CacheOps *co_tail;
-
/**
- * Global configuration.
+ * Use namecache
*/
-static const struct GNUNET_CONFIGURATION_Handle *cfg;
+static int use_cache;
-#if 0
/**
- * Check if name is in srv format (_x._y.xxx)
- *
- * @param name
- * @return #GNUNET_YES if true
+ * Global configuration.
*/
-static int
-is_srv (const char *name)
-{
- char *ndup;
- int ret;
-
- if (*name != '_')
- return GNUNET_NO;
- if (NULL == strstr (name, "._"))
- return GNUNET_NO;
- ret = GNUNET_YES;
- ndup = GNUNET_strdup (name);
- strtok (ndup, ".");
- if (NULL == strtok (NULL, "."))
- ret = GNUNET_NO;
- if (NULL == strtok (NULL, "."))
- ret = GNUNET_NO;
- if (NULL != strtok (NULL, "."))
- ret = GNUNET_NO;
- GNUNET_free (ndup);
- return ret;
-}
-#endif
+static const struct GNUNET_CONFIGURATION_Handle *cfg;
/**
* even though they consist of multiple labels.
*
* Examples:
- * a.b.gnu = not canonical
+ * a.b.gnu = not canonical
* a = canonical
* _foo._srv = canonical
* _f.bar = not canonical
* @param name the name to test
* @return #GNUNET_YES if canonical
*/
-static int
+/* dead, but keep for now */ int
is_canonical (const char *name)
{
const char *pos;
const char *dot;
- if (NULL == strchr (name, '.'))
+ if (NULL == strchr (name,
+ (unsigned char) '.'))
return GNUNET_YES;
if ('_' != name[0])
return GNUNET_NO;
pos = &name[1];
- while (NULL != (dot = strchr (pos, '.')))
+ while (NULL != (dot = strchr (pos,
+ (unsigned char) '.')))
if ('_' != dot[1])
return GNUNET_NO;
else
/* ************************** Resolution **************************** */
/**
- * Exands a name ending in .+ with the zone of origin.
+ * Expands a name ending in .+ with the zone of origin.
*
* @param rh resolution context
* @param name name to modify (to be free'd or returned)
"%.*s.%s",
(int) (s_len - 2),
name,
- GNUNET_NAMESTORE_pkey_to_zkey (&rh->ac_tail->authority_info.gns_authority));
+ GNUNET_GNSRECORD_pkey_to_zkey (&rh->ac_tail->authority_info.gns_authority));
GNUNET_free (name);
return ret;
}
* Task scheduled to asynchronously fail a resolution.
*
* @param cls the 'struct GNS_ResolverHandle' of the resolution to fail
- * @param tc task context
*/
static void
-fail_resolution (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+fail_resolution (void *cls)
{
struct GNS_ResolverHandle *rh = cls;
- rh->task_id = GNUNET_SCHEDULER_NO_TASK;
+ rh->task_id = NULL;
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
}
#if (defined WINDOWS) || (defined DARWIN)
/* Don't have this on W32, here's a naive implementation
* Was somehow removed on OS X ... */
-void *
+static void *
memrchr (const void *s,
int c,
size_t n)
/**
* Get the next, rightmost label from the name that we are trying to resolve,
- * and update the resolution position accordingly.
+ * and update the resolution position accordingly. Labels usually consist
+ * of up to 63 characters without a period ("."); however, we use a special
+ * convention to support SRV and TLSA records where the domain name
+ * includes an encoding for a service and protocol in the name. The
+ * syntax (see RFC 2782) here is "_Service._Proto.Name" and in this
+ * special case we include the "_Service._Proto" in the rightmost label.
+ * Thus, for "_443._tcp.foo.bar" we first return the label "bar" and then
+ * the label "_443._tcp.foo". The special case is detected by the
+ * presence of labels beginning with an underscore. Whenever a label
+ * begins with an underscore, it is combined with the label to its right
+ * (and the "." is preserved).
*
* @param rh handle to the resolution operation to get the next label from
* @return NULL if there are no more labels
const char *rp;
const char *dot;
size_t len;
+ char *ret;
+ char *srv_name;
+ char *proto_name;
+ struct protoent *pe;
+ struct servent *se;
if (0 == rh->name_resolution_pos)
return NULL;
- dot = memrchr (rh->name, (int) '.', rh->name_resolution_pos);
+ dot = memrchr (rh->name,
+ (int) '.',
+ rh->name_resolution_pos);
if (NULL == dot)
{
/* done, this was the last one */
rp = dot + 1;
rh->name_resolution_pos = dot - rh->name;
}
- return GNUNET_strndup (rp, len);
+ rh->protocol = 0;
+ rh->service = 0;
+ ret = GNUNET_strndup (rp, len);
+ /* If we have labels starting with underscore with label on
+ * the right (SRV/DANE/BOX case), determine port/protocol;
+ * The format of `rh->name` must be "_PORT._PROTOCOL".
+ */
+ if ( ('_' == rh->name[0]) &&
+ (NULL != (dot = memrchr (rh->name,
+ (int) '.',
+ rh->name_resolution_pos))) &&
+ ('_' == dot[1]) &&
+ (NULL == memrchr (rh->name,
+ (int) '.',
+ dot - rh->name)) )
+ {
+ srv_name = GNUNET_strndup (&rh->name[1],
+ (dot - rh->name) - 1);
+ proto_name = GNUNET_strndup (&dot[2],
+ rh->name_resolution_pos - (dot - rh->name) - 1);
+ rh->name_resolution_pos = 0;
+ pe = getprotobyname (proto_name);
+ if (NULL == pe)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Protocol `%s' unknown, skipping labels.\n"),
+ proto_name);
+ GNUNET_free (proto_name);
+ GNUNET_free (srv_name);
+ return ret;
+ }
+ se = getservbyname (srv_name,
+ proto_name);
+ if (NULL == se)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Service `%s' unknown for protocol `%s', skipping labels.\n"),
+ srv_name,
+ proto_name);
+ GNUNET_free (proto_name);
+ GNUNET_free (srv_name);
+ return ret;
+ }
+ rh->protocol = pe->p_proto;
+ rh->service = se->s_port;
+ GNUNET_free (proto_name);
+ GNUNET_free (srv_name);
+ }
+ return ret;
}
for (pos = rh->dns_result_head; NULL != pos; pos = pos->next)
n++;
{
- struct GNUNET_NAMESTORE_RecordData rd[n];
+ struct GNUNET_GNSRECORD_Data rd[n];
i = 0;
for (pos = rh->dns_result_head; NULL != pos; pos = pos->next)
rd[i].record_type = pos->record_type;
if (0 == pos->expiration_time)
{
- rd[i].flags = GNUNET_NAMESTORE_RF_RELATIVE_EXPIRATION;
+ rd[i].flags = GNUNET_GNSRECORD_RF_RELATIVE_EXPIRATION;
rd[i].expiration_time = 0;
}
else
{
- rd[i].flags = GNUNET_NAMESTORE_RF_NONE;
+ rd[i].flags = GNUNET_GNSRECORD_RF_NONE;
rd[i].expiration_time = pos->expiration_time;
}
i++;
res->data_size = data_size;
res->record_type = record_type;
res->data = &res[1];
- memcpy (&res[1], data, data_size);
+ GNUNET_memcpy (&res[1], data, data_size);
GNUNET_CONTAINER_DLL_insert (rh->dns_result_head,
rh->dns_result_tail,
res);
* We had to do a DNS lookup. Convert the result (if any) and return
* it.
*
- * @param cls closure with the 'struct GNS_ResolverHandle'
+ * @param cls closure with the `struct GNS_ResolverHandle`
* @param addr one of the addresses of the host, NULL for the last address
* @param addrlen length of the address
*/
const struct sockaddr_in *sa4;
const struct sockaddr_in6 *sa6;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Received %u bytes of DNS IP data\n",
- addrlen);
if (NULL == addr)
{
rh->std_resolve = NULL;
transmit_lookup_dns_result (rh);
return;
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %u bytes of DNS IP data\n",
+ addrlen);
switch (addr->sa_family)
{
case AF_INET:
* @param tc task context
*/
static void
-recursive_resolution (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
+recursive_resolution (void *cls);
/**
* Begin the resolution process from 'name', starting with
* the identification of the zone specified by 'name'.
*
- * @param rh resolution to perform
+ * @param cls closure with `struct GNS_ResolverHandle *rh`
*/
static void
-start_resolver_lookup (struct GNS_ResolverHandle *rh);
+start_resolver_lookup (void *cls);
/**
unsigned int rd_count;
unsigned int i;
+ (void) rs;
rh->dns_request = NULL;
GNUNET_SCHEDULER_cancel (rh->task_id);
- rh->task_id = GNUNET_SCHEDULER_NO_TASK;
+ rh->task_id = NULL;
p = GNUNET_DNSPARSER_parse ((const char *) dns,
dns_len);
if (NULL == p)
(GNUNET_DNSPARSER_TYPE_CNAME == p->answers[0].type) &&
(GNUNET_DNSPARSER_TYPE_CNAME != rh->record_type) )
{
+ int af;
+
GNUNET_free (rh->name);
rh->name = GNUNET_strdup (p->answers[0].data.hostname);
- start_resolver_lookup (rh);
+ rh->name_resolution_pos = strlen (rh->name);
+ switch (rh->record_type)
+ {
+ case GNUNET_DNSPARSER_TYPE_A:
+ af = AF_INET;
+ break;
+ case GNUNET_DNSPARSER_TYPE_AAAA:
+ af = AF_INET6;
+ break;
+ default:
+ af = AF_UNSPEC;
+ break;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Doing standard DNS lookup for `%s'\n",
+ rh->name);
+ rh->std_resolve = GNUNET_RESOLVER_ip_get (rh->name,
+ af,
+ DNS_LOOKUP_TIMEOUT,
+ &handle_dns_result,
+ rh);
GNUNET_DNSPARSER_free_packet (p);
return;
}
- /* FIXME: add DNAME support */
/* convert from (parsed) DNS to (binary) GNS format! */
rd_count = p->num_answers + p->num_authority_records + p->num_additional_records;
{
- struct GNUNET_NAMESTORE_RecordData rd[rd_count];
+ struct GNUNET_GNSRECORD_Data rd[rd_count];
unsigned int skip;
char buf[UINT16_MAX];
size_t buf_off;
else if (i < p->num_answers + p->num_authority_records)
rec = &p->authority_records[i - p->num_answers];
else
- rec = &p->authority_records[i - p->num_answers - p->num_authority_records];
+ rec = &p->additional_records[i - p->num_answers - p->num_authority_records];
/* As we copied the full DNS name to 'rh->ac_tail->label', this
should be the correct check to see if this record is actually
a record for our label... */
continue;
}
rd[i - skip].data_size = buf_off - buf_start;
- rd[i - skip].data = &buf[buf_start];
+ rd[i - skip].data = &buf[buf_start];
break;
case GNUNET_DNSPARSER_TYPE_SOA:
buf_start = buf_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_soa (buf,
- sizeof (buf),
- &buf_off,
- rec->data.soa))
+ sizeof (buf),
+ &buf_off,
+ rec->data.soa))
{
GNUNET_break (0);
skip++;
continue;
}
rd[i - skip].data_size = buf_off - buf_start;
- rd[i - skip].data = &buf[buf_start];
+ rd[i - skip].data = &buf[buf_start];
break;
case GNUNET_DNSPARSER_TYPE_MX:
buf_start = buf_off;
continue;
}
rd[i - skip].data_size = buf_off - buf_start;
- rd[i - skip].data = &buf[buf_start];
+ rd[i - skip].data = &buf[buf_start];
break;
case GNUNET_DNSPARSER_TYPE_SRV:
buf_start = buf_off;
continue;
}
rd[i - skip].data_size = buf_off - buf_start;
- rd[i - skip].data = &buf[buf_start];
+ rd[i - skip].data = &buf[buf_start];
break;
default:
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
continue;
}
}
- rh->proc (rh->proc_cls, rd_count - skip, rd);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Returning DNS response for `%s' with %u answers\n",
+ rh->ac_tail->label,
+ (unsigned int) p->num_answers);
+ rh->proc (rh->proc_cls,
+ rd_count - skip,
+ rd);
GNS_resolver_lookup_cancel (rh);
}
GNUNET_DNSPARSER_free_packet (p);
struct GNUNET_DNSPARSER_Packet *p;
char *dns_request;
size_t dns_request_length;
+ int ret;
ac = rh->ac_tail;
GNUNET_assert (NULL != ac);
UINT16_MAX);
p->flags.opcode = GNUNET_TUN_DNS_OPCODE_QUERY;
p->flags.recursion_desired = 1;
- if (GNUNET_OK !=
- GNUNET_DNSPARSER_pack (p, 1024, &dns_request, &dns_request_length))
+ ret = GNUNET_DNSPARSER_pack (p,
+ 1024,
+ &dns_request,
+ &dns_request_length);
+ if (GNUNET_OK != ret)
{
GNUNET_break (0);
- rh->proc (rh->proc_cls, 0, NULL);
+ rh->proc (rh->proc_cls,
+ 0,
+ NULL);
GNS_resolver_lookup_cancel (rh);
}
else
&fail_resolution,
rh);
}
- GNUNET_free (dns_request);
+ if (GNUNET_SYSERR != ret)
+ GNUNET_free (dns_request);
GNUNET_DNSPARSER_free_packet (p);
}
size_t nlen;
char *res;
struct AuthorityChain *ac;
+ int af;
nlen = strlen (cname);
if ( (nlen > 2) &&
ac->gns_authority = GNUNET_YES;
ac->authority_info.gns_authority = rh->ac_tail->authority_info.gns_authority;
ac->label = resolver_lookup_get_next_label (rh);
- /* tigger shortening */
- if (NULL != rh->shorten_key)
- GNS_shorten_start (rh->ac_tail->label,
- &ac->authority_info.gns_authority,
- rh->shorten_key);
+ ac->suggested_shortening_label = NULL;
+ ac->shortening_started = GNUNET_NO;
/* add AC to tail */
GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
rh->ac_tail,
rh);
return;
}
- /* name is absolute, start from the beginning */
+ /* name is absolute, go to DNS */
GNUNET_free (rh->name);
rh->name = GNUNET_strdup (cname);
- start_resolver_lookup (rh);
+ rh->name_resolution_pos = strlen (rh->name);
+ switch (rh->record_type)
+ {
+ case GNUNET_DNSPARSER_TYPE_A:
+ af = AF_INET;
+ break;
+ case GNUNET_DNSPARSER_TYPE_AAAA:
+ af = AF_INET6;
+ break;
+ default:
+ af = AF_UNSPEC;
+ break;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Doing standard DNS lookup for `%s'\n",
+ rh->name);
+ rh->std_resolve = GNUNET_RESOLVER_ip_get (rh->name,
+ af,
+ DNS_LOOKUP_TIMEOUT,
+ &handle_dns_result,
+ rh);
}
static void
handle_gns_resolution_result (void *cls,
unsigned int rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd);
+ const struct GNUNET_GNSRECORD_Data *rd);
/**
{
struct VpnContext *vpn_ctx = cls;
struct GNS_ResolverHandle *rh = vpn_ctx->rh;
- struct GNUNET_NAMESTORE_RecordData rd[vpn_ctx->rd_count];
+ struct GNUNET_GNSRECORD_Data rd[vpn_ctx->rd_count];
unsigned int i;
vpn_ctx->vpn_request = NULL;
rh->vpn_ctx = NULL;
GNUNET_assert (GNUNET_OK ==
- GNUNET_NAMESTORE_records_deserialize (vpn_ctx->rd_data_size,
+ GNUNET_GNSRECORD_records_deserialize (vpn_ctx->rd_data_size,
vpn_ctx->rd_data,
vpn_ctx->rd_count,
rd));
for (i=0;i<vpn_ctx->rd_count;i++)
{
- if (GNUNET_NAMESTORE_TYPE_VPN == rd[i].record_type)
+ if (GNUNET_GNSRECORD_TYPE_VPN == rd[i].record_type)
{
switch (af)
{
}
+/**
+ * We've resolved the IP address for the DNS resolver to use
+ * after encountering a GNS2DNS record.
+ *
+ * TODO: Right now we only foward the request to ONE DNS resolver,
+ * even if we get multiple IP addresses back; a correct implementation
+ * should try all DNS resolvers.
+ *
+ * @param cls the `struct GNS_ResolverHandle` where we encountered
+ * the GNS2DNS record
+ * @param rd_count number of records in @a rd
+ * @param rd addresses for the DNS resolver (presumably)
+ */
+static void
+handle_gns2dns_result (void *cls,
+ unsigned int rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct GNS_ResolverHandle *rh = cls;
+ struct AuthorityChain *ac;
+ struct sockaddr *sa;
+ struct sockaddr_in v4;
+ struct sockaddr_in6 v6;
+ size_t sa_len;
+
+ /* find suitable A/AAAA record */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received %u results for IP address of DNS server for GNS2DNS transition\n",
+ rd_count);
+ /* enable cleanup of 'rh' handle that comes next... */
+ if (NULL != rh->g2dc->rh)
+ {
+ GNUNET_CONTAINER_DLL_insert (rlh_head,
+ rlh_tail,
+ rh->g2dc->rh);
+ rh->g2dc->rh = NULL;
+ }
+ sa = NULL;
+ sa_len = 0;
+ for (unsigned int j=0;j<rd_count;j++)
+ {
+ switch (rd[j].record_type)
+ {
+ case GNUNET_DNSPARSER_TYPE_A:
+ if (sizeof (struct in_addr) != rd[j].data_size)
+ {
+ GNUNET_break_op (0);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ /* FIXME: might want to check if we support IPv4 here,
+ and otherwise skip this one and hope we find another */
+ memset (&v4, 0, sizeof (v4));
+ sa_len = sizeof (v4);
+ v4.sin_family = AF_INET;
+ v4.sin_port = htons (53);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ v4.sin_len = (u_char) sa_len;
+#endif
+ GNUNET_memcpy (&v4.sin_addr,
+ rd[j].data,
+ sizeof (struct in_addr));
+ sa = (struct sockaddr *) &v4;
+ break;
+ case GNUNET_DNSPARSER_TYPE_AAAA:
+ if (sizeof (struct in6_addr) != rd[j].data_size)
+ {
+ GNUNET_break_op (0);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ /* FIXME: might want to check if we support IPv6 here,
+ and otherwise skip this one and hope we find another */
+ memset (&v6, 0, sizeof (v6));
+ sa_len = sizeof (v6);
+ v6.sin6_family = AF_INET6;
+ v6.sin6_port = htons (53);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ v6.sin6_len = (u_char) sa_len;
+#endif
+ GNUNET_memcpy (&v6.sin6_addr,
+ rd[j].data,
+ sizeof (struct in6_addr));
+ sa = (struct sockaddr *) &v6;
+ break;
+ default:
+ break;
+ }
+ if (NULL != sa)
+ break;
+ }
+ if (NULL == sa)
+ {
+ /* we cannot continue; NS without A/AAAA */
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ /* expand authority chain */
+ ac = GNUNET_new (struct AuthorityChain);
+ ac->rh = rh;
+ GNUNET_assert (strlen (rh->g2dc->ns) <= GNUNET_DNSPARSER_MAX_NAME_LENGTH);
+ strcpy (ac->authority_info.dns_authority.name,
+ rh->g2dc->ns);
+ GNUNET_memcpy (&ac->authority_info.dns_authority.dns_ip,
+ sa,
+ sa_len);
+ /* for DNS recursion, the label is the full DNS name,
+ created from the remainder of the GNS name and the
+ name in the NS record */
+ GNUNET_asprintf (&ac->label,
+ "%.*s%s%s",
+ (int) rh->name_resolution_pos,
+ rh->name,
+ (0 != rh->name_resolution_pos) ? "." : "",
+ rh->g2dc->ns);
+ GNUNET_free (rh->g2dc->ns);
+ GNUNET_free (rh->g2dc);
+ rh->g2dc = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Will continue resolution using DNS server `%s' to resolve `%s'\n",
+ GNUNET_a2s (sa,
+ sa_len),
+ ac->label);
+ GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
+ rh->ac_tail,
+ ac);
+ if (strlen (ac->label) > GNUNET_DNSPARSER_MAX_NAME_LENGTH)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("GNS lookup resulted in DNS name that is too long (`%s')\n"),
+ ac->label);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ /* recurse */
+ rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
+ rh);
+}
+
+
+/**
+ * Function called by the resolver for each address obtained from DNS.
+ *
+ * @param cls closure, a `struct Gns2DnsContext *`
+ * @param addr one of the addresses of the host, NULL for the last address
+ * @param addrlen length of @a addr
+ */
+static void
+handle_gns2dns_ip (void *cls,
+ const struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ struct Gns2DnsContext *g2dc = cls;
+ struct GNUNET_GNSRECORD_Data rd;
+
+ if (NULL == addr)
+ {
+ /* DNS resolution failed */
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Failed to use DNS to resolve name of DNS resolver\n");
+ g2dc->rh->g2dc = NULL;
+ fail_resolution (g2dc->rh);
+ GNUNET_free (g2dc);
+ }
+ switch (addr->sa_family)
+ {
+ case AF_INET:
+ {
+ const struct sockaddr_in *v4 = (const struct sockaddr_in *) addr;
+
+ GNUNET_assert (sizeof (*v4) == addrlen);
+ rd.data = v4;
+ rd.data_size = sizeof (*v4);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_A;
+ rd.flags = 0;
+ break;
+ }
+ case AF_INET6:
+ {
+ const struct sockaddr_in6 *v6 = (const struct sockaddr_in6 *) addr;
+
+ GNUNET_assert (sizeof (*v6) == addrlen);
+ rd.data = v6;
+ rd.data_size = sizeof (v6);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_AAAA;
+ rd.flags = 0;
+ break;
+ }
+ default:
+ return;
+ }
+ GNUNET_RESOLVER_request_cancel (g2dc->dns_rh);
+ g2dc->dns_rh = NULL;
+ handle_gns2dns_result (g2dc->rh,
+ 1,
+ &rd);
+
+}
+
+
+
/**
* Process a records that were decrypted from a block.
*
static void
handle_gns_resolution_result (void *cls,
unsigned int rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd)
+ const struct GNUNET_GNSRECORD_Data *rd)
{
struct GNS_ResolverHandle *rh = cls;
struct AuthorityChain *ac;
- unsigned int i;
- unsigned int j;
- struct sockaddr *sa;
- struct sockaddr_in v4;
- struct sockaddr_in6 v6;
- size_t sa_len;
+ struct AuthorityChain *shorten_ac;
char *cname;
struct VpnContext *vpn_ctx;
const struct GNUNET_TUN_GnsVpnRecord *vpn;
size_t scratch_off;
size_t scratch_start;
size_t off;
- struct GNUNET_NAMESTORE_RecordData rd_new[rd_count];
+ struct GNUNET_GNSRECORD_Data rd_new[rd_count];
unsigned int rd_off;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Resolution succeeded for `%s' in zone %s, got %u records\n",
rh->ac_tail->label,
- GNUNET_NAMESTORE_z2s (&rh->ac_tail->authority_info.gns_authority),
+ GNUNET_GNSRECORD_z2s (&rh->ac_tail->authority_info.gns_authority),
rd_count);
if (0 == rh->name_resolution_pos)
{
GNUNET_break_op (0);
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
- return;
+ GNUNET_free_non_null (cname);
+ return;
}
handle_gns_cname_result (rh,
cname);
if ( (GNUNET_DNSPARSER_TYPE_A == rh->record_type) ||
(GNUNET_DNSPARSER_TYPE_AAAA == rh->record_type) )
{
- for (i=0;i<rd_count;i++)
+ for (unsigned int i=0;i<rd_count;i++)
{
switch (rd[i].record_type)
{
- case GNUNET_NAMESTORE_TYPE_VPN:
+ case GNUNET_GNSRECORD_TYPE_VPN:
{
af = (GNUNET_DNSPARSER_TYPE_A == rh->record_type) ? AF_INET : AF_INET6;
- if (sizeof (struct GNUNET_TUN_GnsVpnRecord) <
+ if (sizeof (struct GNUNET_TUN_GnsVpnRecord) >
rd[i].data_size)
{
GNUNET_break_op (0);
GNS_resolver_lookup_cancel (rh);
return;
}
- GNUNET_CRYPTO_hash (vname,
- strlen (vname), // FIXME: +1?
- &vhash);
+ GNUNET_TUN_service_name_to_hash (vname,
+ &vhash);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Attempting VPN allocation for %s-%s (AF: %d, proto %d)\n",
+ GNUNET_i2s (&vpn->peer),
+ vname,
+ (int) af,
+ (int) ntohs (vpn->proto));
vpn_ctx = GNUNET_new (struct VpnContext);
rh->vpn_ctx = vpn_ctx;
vpn_ctx->rh = rh;
- vpn_ctx->rd_data_size = GNUNET_NAMESTORE_records_get_size (rd_count,
+ vpn_ctx->rd_data_size = GNUNET_GNSRECORD_records_get_size (rd_count,
rd);
vpn_ctx->rd_data = GNUNET_malloc (vpn_ctx->rd_data_size);
- (void) GNUNET_NAMESTORE_records_serialize (rd_count,
- rd,
- vpn_ctx->rd_data_size,
- vpn_ctx->rd_data);
+ vpn_ctx->rd_count = rd_count;
+ GNUNET_assert (vpn_ctx->rd_data_size ==
+ (size_t) GNUNET_GNSRECORD_records_serialize (rd_count,
+ rd,
+ vpn_ctx->rd_data_size,
+ vpn_ctx->rd_data));
vpn_ctx->vpn_request = GNUNET_VPN_redirect_to_peer (vpn_handle,
af,
ntohs (vpn->proto),
&vhash,
GNUNET_TIME_relative_to_absolute (VPN_TIMEOUT),
&vpn_allocation_cb,
- rh);
+ vpn_ctx);
return;
}
- case GNUNET_NAMESTORE_TYPE_GNS2DNS:
+ case GNUNET_GNSRECORD_TYPE_GNS2DNS:
{
/* delegation to DNS */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found GNS2DNS record, delegating to DNS!\n");
goto do_recurse;
}
default:
break;
- }
- }
- }
+ } /* end: switch */
+ } /* end: for rd */
+ } /* end: name_resolution_pos */
/* convert relative names in record values to absolute names,
using 'scratch' array for memory allocations */
scratch_off = 0;
rd_off = 0;
- for (i=0;i<rd_count;i++)
+ shorten_ac = rh->ac_tail;
+ for (unsigned int i=0;i<rd_count;i++)
{
+ GNUNET_assert (rd_off <= i);
+ if ( (0 != rh->protocol) &&
+ (0 != rh->service) &&
+ (GNUNET_GNSRECORD_TYPE_BOX != rd[i].record_type) )
+ continue; /* we _only_ care about boxed records */
+
+ GNUNET_assert (rd_off < rd_count);
rd_new[rd_off] = rd[i];
/* Check if the embedded name(s) end in "+", and if so,
replace the "+" with the zone at "ac_tail", changing the name
- to a ".zkey". The name is allocated on the 'scratch' array,
+ to a ".ZONEKEY". The name is allocated on the 'scratch' array,
so we can free it afterwards. */
switch (rd[i].record_type)
{
else
{
cname = translate_dot_plus (rh, cname);
+ GNUNET_break (NULL != cname);
scratch_start = scratch_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_name (scratch,
}
else
{
+ GNUNET_assert (rd_off < rd_count);
rd_new[rd_off].data = &scratch[scratch_start];
rd_new[rd_off].data_size = scratch_off - scratch_start;
rd_off++;
}
}
- GNUNET_free_non_null (cname);
+ GNUNET_free_non_null (cname);
}
break;
case GNUNET_DNSPARSER_TYPE_SOA:
}
else
{
+ GNUNET_assert (rd_off < rd_count);
rd_new[rd_off].data = &scratch[scratch_start];
rd_new[rd_off].data_size = scratch_off - scratch_start;
rd_off++;
}
}
if (NULL != soa)
- GNUNET_DNSPARSER_free_soa (soa);
+ GNUNET_DNSPARSER_free_soa (soa);
}
break;
case GNUNET_DNSPARSER_TYPE_MX:
}
else
{
+ GNUNET_assert (rd_off < rd_count);
rd_new[rd_off].data = &scratch[scratch_start];
rd_new[rd_off].data_size = scratch_off - scratch_start;
rd_off++;
}
}
if (NULL != mx)
- GNUNET_DNSPARSER_free_mx (mx);
- }
+ GNUNET_DNSPARSER_free_mx (mx);
+ }
break;
case GNUNET_DNSPARSER_TYPE_SRV:
{
struct GNUNET_DNSPARSER_SrvRecord *srv;
off = 0;
- /* FIXME: passing rh->name here is is not necessarily what we want
- (SRV support not finished) */
- srv = GNUNET_DNSPARSER_parse_srv (rh->name,
- rd[i].data,
+ srv = GNUNET_DNSPARSER_parse_srv (rd[i].data,
rd[i].data_size,
&off);
if ( (NULL == srv) ||
}
else
{
- srv->domain_name = translate_dot_plus (rh, srv->domain_name);
srv->target = translate_dot_plus (rh, srv->target);
scratch_start = scratch_off;
if (GNUNET_OK !=
}
else
{
+ GNUNET_assert (rd_off < rd_count);
rd_new[rd_off].data = &scratch[scratch_start];
rd_new[rd_off].data_size = scratch_off - scratch_start;
rd_off++;
}
}
if (NULL != srv)
- GNUNET_DNSPARSER_free_srv (srv);
+ GNUNET_DNSPARSER_free_srv (srv);
}
break;
- case GNUNET_NAMESTORE_TYPE_PKEY:
- /* tigger shortening */
- if (NULL != rh->shorten_key)
- {
- struct GNUNET_CRYPTO_EccPublicSignKey pub;
-
- if (rd[i].data_size != sizeof (struct GNUNET_CRYPTO_EccPublicSignKey))
+
+ case GNUNET_GNSRECORD_TYPE_NICK:
+ {
+ const char *nick;
+
+ nick = rd[i].data;
+ if ((rd[i].data_size > 0) &&
+ (nick[rd[i].data_size -1] != '\0'))
+ {
+ GNUNET_break_op (0);
+ break;
+ }
+ if (NULL == shorten_ac->suggested_shortening_label)
+ shorten_ac->suggested_shortening_label = GNUNET_strdup (nick);
+ break;
+ }
+ case GNUNET_GNSRECORD_TYPE_PKEY:
+ {
+ struct GNUNET_CRYPTO_EcdsaPublicKey pub;
+
+ if (rd[i].data_size != sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey))
{
GNUNET_break_op (0);
break;
}
- memcpy (&pub, rd[i].data, rd[i].data_size);
- GNS_shorten_start (rh->ac_tail->label,
- &pub,
- rh->shorten_key);
- }
- rd_off++;
+ GNUNET_memcpy (&pub, rd[i].data, rd[i].data_size);
+ rd_off++;
+ if (GNUNET_GNSRECORD_TYPE_PKEY != rh->record_type)
+ {
+ /* try to resolve "+" */
+ struct AuthorityChain *ac;
+
+ ac = GNUNET_new (struct AuthorityChain);
+ ac->rh = rh;
+ ac->gns_authority = GNUNET_YES;
+ ac->authority_info.gns_authority = pub;
+ ac->label = GNUNET_strdup (GNUNET_GNS_MASTERZONE_STR);
+ ac->suggested_shortening_label = NULL;
+ ac->shortening_started = GNUNET_NO;
+ GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
+ rh->ac_tail,
+ ac);
+ rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
+ rh);
+ return;
+ }
+ }
break;
+ case GNUNET_GNSRECORD_TYPE_GNS2DNS:
+ {
+ /* delegation to DNS */
+ if (GNUNET_GNSRECORD_TYPE_GNS2DNS == rh->record_type)
+ {
+ rd_off++;
+ break; /* do not follow to DNS, we wanted the GNS2DNS record! */
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found GNS2DNS record, delegating to DNS!\n");
+ goto do_recurse;
+ }
+ case GNUNET_GNSRECORD_TYPE_BOX:
+ {
+ /* unbox SRV/TLSA records if a specific one was requested */
+ if ( (0 != rh->protocol) &&
+ (0 != rh->service) &&
+ (rd[i].data_size >= sizeof (struct GNUNET_GNSRECORD_BoxRecord)) )
+ {
+ const struct GNUNET_GNSRECORD_BoxRecord *box;
+
+ box = rd[i].data;
+ if ( (ntohs (box->protocol) == rh->protocol) &&
+ (ntohs (box->service) == rh->service) )
+ {
+ /* Box matches, unbox! */
+ GNUNET_assert (rd_off < rd_count);
+ rd_new[rd_off].record_type = ntohl (box->record_type);
+ rd_new[rd_off].data_size -= sizeof (struct GNUNET_GNSRECORD_BoxRecord);
+ rd_new[rd_off].data = &box[1];
+ rd_off++;
+ }
+ }
+ else
+ {
+ /* no specific protocol/service specified, preserve all BOX
+ records (for modern, GNS-enabled applications) */
+ rd_off++;
+ }
+ break;
+ }
default:
rd_off++;
break;
- }
- }
+ } /* end: switch */
+ } /* end: for rd_count */
/* yes, we are done, return result */
- rh->proc (rh->proc_cls, rd_off, rd_new);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Returning GNS response for `%s' with %u answers\n",
+ rh->ac_tail->label,
+ rd_off);
+ rh->proc (rh->proc_cls,
+ rd_off,
+ rd_new);
GNS_resolver_lookup_cancel (rh);
return;
}
do_recurse:
/* need to recurse, check if we can */
- for (i=0;i<rd_count;i++)
+ for (unsigned int i=0;i<rd_count;i++)
{
switch (rd[i].record_type)
{
- case GNUNET_NAMESTORE_TYPE_PKEY:
+ case GNUNET_GNSRECORD_TYPE_PKEY:
/* delegation to another zone */
- if (sizeof (struct GNUNET_CRYPTO_EccPublicSignKey) !=
+ if (sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey) !=
rd[i].data_size)
{
GNUNET_break_op (0);
ac = GNUNET_new (struct AuthorityChain);
ac->rh = rh;
ac->gns_authority = GNUNET_YES;
- memcpy (&ac->authority_info.gns_authority,
+ ac->suggested_shortening_label = NULL;
+ ac->shortening_started = GNUNET_NO;
+ GNUNET_memcpy (&ac->authority_info.gns_authority,
rd[i].data,
- sizeof (struct GNUNET_CRYPTO_EccPublicSignKey));
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey));
ac->label = resolver_lookup_get_next_label (rh);
- /* tigger shortening */
- if (NULL != rh->shorten_key)
- GNS_shorten_start (rh->ac_tail->label,
- &ac->authority_info.gns_authority,
- rh->shorten_key);
/* add AC to tail */
GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
rh->ac_tail,
rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
rh);
return;
- case GNUNET_NAMESTORE_TYPE_GNS2DNS:
+ case GNUNET_GNSRECORD_TYPE_GNS2DNS:
{
- char *ns;
/* resolution continues within DNS */
- if (GNUNET_DNSPARSER_MAX_NAME_LENGTH < rd[i].data_size)
- {
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- /* find associated A/AAAA record */
- sa = NULL;
- sa_len = 0;
- for (j=0;j<rd_count;j++)
- {
- switch (rd[j].record_type)
- {
- case GNUNET_DNSPARSER_TYPE_A:
- if (sizeof (struct in_addr) != rd[j].data_size)
- {
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- /* FIXME: might want to check if we support IPv4 here,
- and otherwise skip this one and hope we find another */
- memset (&v4, 0, sizeof (v4));
- sa_len = sizeof (v4);
- v4.sin_family = AF_INET;
- v4.sin_port = htons (53);
-#if HAVE_SOCKADDR_IN_SIN_LEN
- v4.sin_len = (u_char) sa_len;
-#endif
- memcpy (&v4.sin_addr,
- rd[j].data,
- sizeof (struct in_addr));
- sa = (struct sockaddr *) &v4;
- break;
- case GNUNET_DNSPARSER_TYPE_AAAA:
- if (sizeof (struct in6_addr) != rd[j].data_size)
- {
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- /* FIXME: might want to check if we support IPv6 here,
- and otherwise skip this one and hope we find another */
- memset (&v6, 0, sizeof (v6));
- sa_len = sizeof (v6);
- v6.sin6_family = AF_INET6;
- v6.sin6_port = htons (53);
-#if HAVE_SOCKADDR_IN_SIN_LEN
- v6.sin6_len = (u_char) sa_len;
-#endif
- memcpy (&v6.sin6_addr,
- rd[j].data,
- sizeof (struct in6_addr));
- sa = (struct sockaddr *) &v6;
- break;
- default:
- break;
- }
- if (NULL != sa)
- break;
- }
- if (NULL == sa)
- {
- /* we cannot continue; NS without A/AAAA */
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- /* expand authority chain */
- ac = GNUNET_new (struct AuthorityChain);
- ac->rh = rh;
- off = 0;
- ns = GNUNET_DNSPARSER_parse_name (rd[i].data,
- rd[i].data_size,
- &off);
- if ( (NULL == ns) ||
- (off != rd[i].data_size) )
- {
- GNUNET_break_op (0); /* record not well-formed */
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- strcpy (ac->authority_info.dns_authority.name,
- ns);
- memcpy (&ac->authority_info.dns_authority.dns_ip,
- sa,
- sa_len);
- /* for DNS recursion, the label is the full DNS name,
- created from the remainder of the GNS name and the
- name in the NS record */
- GNUNET_asprintf (&ac->label,
- "%.*s%s%s",
- (int) rh->name_resolution_pos,
- rh->name,
- (0 != rh->name_resolution_pos) ? "." : "",
- ns);
- GNUNET_free (ns);
- GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
- rh->ac_tail,
- ac);
- if (strlen (ac->label) > GNUNET_DNSPARSER_MAX_NAME_LENGTH)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("GNS lookup resulted in DNS name that is too long (`%s')\n"),
- ac->label);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
- }
- /* recurse */
- rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
- rh);
+ struct Gns2DnsContext *g2dc;
+ char *ip;
+ char *ns;
+ const char *tld;
+ struct GNUNET_CRYPTO_EcdsaPublicKey zone;
+ struct in_addr v4;
+ struct in6_addr v6;
+
+ off = 0;
+ ns = GNUNET_DNSPARSER_parse_name (rd[i].data,
+ rd[i].data_size,
+ &off);
+ ip = GNUNET_DNSPARSER_parse_name (rd[i].data,
+ rd[i].data_size,
+ &off);
+ if ( (NULL == ns) ||
+ (NULL == ip) ||
+ (off != rd[i].data_size) )
+ {
+ GNUNET_break_op (0);
+ GNUNET_free_non_null (ns);
+ GNUNET_free_non_null (ip);
+ fail_resolution (rh);
+ return;
+ }
+ /* resolve 'ip' to determine the IP(s) of the DNS
+ resolver to use for lookup of 'ns' */
+ g2dc = GNUNET_new (struct Gns2DnsContext);
+ g2dc->ns = ns;
+ rh->g2dc = g2dc;
+
+ /* check if 'ip' is already an IPv4/IPv6 address */
+ if (1 == inet_pton (AF_INET,
+ ip,
+ &v4))
+ {
+ /* name is IPv4 address, pretend it's an A record */
+ struct GNUNET_GNSRECORD_Data rd;
+
+ GNUNET_free (ip);
+ rd.data = &v4;
+ rd.data_size = sizeof (v4);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_A;
+ rd.flags = 0;
+ handle_gns2dns_result (rh,
+ 1,
+ &rd);
+ return;
+ }
+ if (1 == inet_pton (AF_INET6,
+ ip,
+ &v6))
+ {
+ /* name is IPv6 address, pretend it's an AAAA record */
+ struct GNUNET_GNSRECORD_Data rd;
+
+ GNUNET_free (ip);
+ rd.data = &v6;
+ rd.data_size = sizeof (v6);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_AAAA;
+ rd.flags = 0;
+ handle_gns2dns_result (rh,
+ 1,
+ &rd);
+ return;
+ }
+
+ tld = GNS_get_tld (ip);
+ if (0 != strcmp (tld,
+ "+"))
+ {
+ /* 'ip' is a DNS name */
+ g2dc->dns_rh = GNUNET_RESOLVER_ip_get (ip,
+ AF_UNSPEC,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ &handle_gns2dns_ip,
+ g2dc);
+ GNUNET_free (ip);
+ return;
+ }
+
+ /* 'ip' should be a GNS name */
+ g2dc->rh = GNUNET_new (struct GNS_ResolverHandle);
+
+ ip = translate_dot_plus (rh,
+ ip);
+ tld = GNS_get_tld (ip);
+ if (GNUNET_OK !=
+ GNUNET_GNSRECORD_zkey_to_pkey (tld,
+ &zone))
+ {
+ GNUNET_break_op (0);
+ GNUNET_free_non_null (ns);
+ GNUNET_free_non_null (ip);
+ GNUNET_free (g2dc);
+ fail_resolution (rh);
+ return;
+ }
+ g2dc->rh->authority_zone = zone;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Resolving `%s' to determine IP address of DNS server for GNS2DNS transition for `%s'\n",
+ ip,
+ ns);
+ g2dc->rh->name = ip;
+ g2dc->rh->name_resolution_pos = strlen (ip) - strlen (tld) - 1;
+ g2dc->rh->proc = &handle_gns2dns_result;
+ g2dc->rh->proc_cls = rh;
+ g2dc->rh->record_type = GNUNET_GNSRECORD_TYPE_ANY;
+ g2dc->rh->options = GNUNET_GNS_LO_DEFAULT;
+ g2dc->rh->loop_limiter = rh->loop_limiter + 1;
+ g2dc->rh->task_id
+ = GNUNET_SCHEDULER_add_now (&start_resolver_lookup,
+ g2dc->rh);
return;
}
case GNUNET_DNSPARSER_TYPE_CNAME:
{
char *cname;
-
+
off = 0;
cname = GNUNET_DNSPARSER_parse_name (rd[i].data,
rd[i].data_size,
}
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("GNS lookup recursion failed (no delegation record found)\n"));
- rh->proc (rh->proc_cls, 0, NULL);
+ rh->proc (rh->proc_cls,
+ 0,
+ NULL);
GNS_resolver_lookup_cancel (rh);
}
* @param emsg error message
*/
static void
-namestore_cache_continuation (void *cls,
+namecache_cache_continuation (void *cls,
int32_t success,
const char *emsg)
{
struct CacheOps *co = cls;
- co->namestore_qe_cache = NULL;
- if (NULL != emsg)
+ co->namecache_qe_cache = NULL;
+ if (GNUNET_OK != success)
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Failed to cache GNS resolution: %s\n"),
emsg);
const struct GNUNET_PeerIdentity *put_path,
unsigned int put_path_length,
enum GNUNET_BLOCK_Type type,
- size_t size, const void *data)
+ size_t size,
+ const void *data)
{
struct GNS_ResolverHandle *rh = cls;
struct AuthorityChain *ac = rh->ac_tail;
- const struct GNUNET_NAMESTORE_Block *block;
+ const struct GNUNET_GNSRECORD_Block *block;
struct CacheOps *co;
+ (void) exp;
+ (void) key;
+ (void) get_path;
+ (void) get_path_length;
+ (void) put_path;
+ (void) put_path_length;
+ (void) type;
GNUNET_DHT_get_stop (rh->get_handle);
rh->get_handle = NULL;
GNUNET_CONTAINER_heap_remove_node (rh->dht_heap_node);
rh->dht_heap_node = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Handling response from the DHT\n");
- if (size < sizeof (struct GNUNET_NAMESTORE_Block))
+ if (size < sizeof (struct GNUNET_GNSRECORD_Block))
{
/* how did this pass DHT block validation!? */
GNUNET_break (0);
block = data;
if (size !=
ntohl (block->purpose.size) +
- sizeof (struct GNUNET_CRYPTO_EccPublicSignKey) +
- sizeof (struct GNUNET_CRYPTO_EccSignature))
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey) +
+ sizeof (struct GNUNET_CRYPTO_EcdsaSignature))
{
/* how did this pass DHT block validation!? */
GNUNET_break (0);
return;
}
if (GNUNET_OK !=
- GNUNET_NAMESTORE_block_decrypt (block,
+ GNUNET_GNSRECORD_block_decrypt (block,
&ac->authority_info.gns_authority,
ac->label,
&handle_gns_resolution_result,
GNS_resolver_lookup_cancel (rh);
return;
}
+ if (0 == GNUNET_TIME_absolute_get_remaining (GNUNET_TIME_absolute_ntoh (block->expiration_time)).rel_value_us)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received expired block from the DHT, will not cache it.\n");
+ return;
+ }
/* Cache well-formed blocks */
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Caching response from the DHT in namestore\n");
+ "Caching response from the DHT in namecache\n");
co = GNUNET_new (struct CacheOps);
- co->namestore_qe_cache = GNUNET_NAMESTORE_block_cache (namestore_handle,
+ co->namecache_qe_cache = GNUNET_NAMECACHE_block_cache (namecache_handle,
block,
- &namestore_cache_continuation,
+ &namecache_cache_continuation,
co);
GNUNET_CONTAINER_DLL_insert (co_head,
co_tail,
/**
- * Process a record that was stored in the namestore.
+ * Initiate a DHT query for a set of GNS records.
+ *
+ * @param rh resolution handle
+ * @param query key to use in the DHT lookup
+ */
+static void
+start_dht_request (struct GNS_ResolverHandle *rh,
+ const struct GNUNET_HashCode *query)
+{
+ struct GNS_ResolverHandle *rx;
+
+ GNUNET_assert (NULL == rh->get_handle);
+ rh->get_handle = GNUNET_DHT_get_start (dht_handle,
+ GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
+ query,
+ DHT_GNS_REPLICATION_LEVEL,
+ GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
+ NULL, 0,
+ &handle_dht_response, rh);
+ rh->dht_heap_node = GNUNET_CONTAINER_heap_insert (dht_lookup_heap,
+ rh,
+ GNUNET_TIME_absolute_get ().abs_value_us);
+ if (GNUNET_CONTAINER_heap_get_size (dht_lookup_heap) > max_allowed_background_queries)
+ {
+ /* fail longest-standing DHT request */
+ rx = GNUNET_CONTAINER_heap_peek (dht_lookup_heap);
+ GNUNET_assert (NULL != rx);
+ rx->proc (rx->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rx);
+ }
+}
+
+
+/**
+ * Process a records that were decrypted from a block that we got from
+ * the namecache. Simply calls #handle_gns_resolution_result().
*
* @param cls closure with the `struct GNS_ResolverHandle`
- * @param block block that was stored in the namestore
+ * @param rd_count number of entries in @a rd array
+ * @param rd array of records with data to store
*/
static void
-handle_namestore_block_response (void *cls,
- const struct GNUNET_NAMESTORE_Block *block)
+handle_gns_namecache_resolution_result (void *cls,
+ unsigned int rd_count,
+ const struct GNUNET_GNSRECORD_Data *rd)
+{
+ struct GNS_ResolverHandle *rh = cls;
+
+ handle_gns_resolution_result (rh,
+ rd_count,
+ rd);
+}
+
+
+/**
+ * Process a record that was stored in the namecache.
+ *
+ * @param cls closure with the `struct GNS_ResolverHandle`
+ * @param block block that was stored in the namecache
+ */
+static void
+handle_namecache_block_response (void *cls,
+ const struct GNUNET_GNSRECORD_Block *block)
{
struct GNS_ResolverHandle *rh = cls;
- struct GNS_ResolverHandle *rx;
struct AuthorityChain *ac = rh->ac_tail;
const char *label = ac->label;
- const struct GNUNET_CRYPTO_EccPublicSignKey *auth = &ac->authority_info.gns_authority;
+ const struct GNUNET_CRYPTO_EcdsaPublicKey *auth = &ac->authority_info.gns_authority;
struct GNUNET_HashCode query;
- GNUNET_NAMESTORE_query_from_public_key (auth,
- label,
- &query);
- GNUNET_assert (NULL != rh->namestore_qe);
- rh->namestore_qe = NULL;
- if ( (GNUNET_NO == rh->only_cached) &&
+ GNUNET_assert (NULL != rh->namecache_qe);
+ rh->namecache_qe = NULL;
+ if ( ( (GNUNET_GNS_LO_DEFAULT == rh->options) ||
+ ( (GNUNET_GNS_LO_LOCAL_MASTER == rh->options) &&
+ (ac != rh->ac_head) ) ) &&
( (NULL == block) ||
(0 == GNUNET_TIME_absolute_get_remaining (GNUNET_TIME_absolute_ntoh (block->expiration_time)).rel_value_us) ) )
{
- /* Namestore knows nothing; try DHT lookup */
+ /* namecache knows nothing; try DHT lookup */
+ GNUNET_GNSRECORD_query_from_public_key (auth,
+ label,
+ &query);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting DHT lookup for `%s' in zone %s\n",
- ac->label,
- GNUNET_NAMESTORE_z2s (&ac->authority_info.gns_authority));
- GNUNET_assert (NULL == rh->get_handle);
- rh->get_handle = GNUNET_DHT_get_start (dht_handle,
- GNUNET_BLOCK_TYPE_GNS_NAMERECORD,
- &query,
- DHT_GNS_REPLICATION_LEVEL,
- GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
- NULL, 0,
- &handle_dht_response, rh);
- rh->dht_heap_node = GNUNET_CONTAINER_heap_insert (dht_lookup_heap,
- rh,
- GNUNET_TIME_absolute_get ().abs_value_us);
- if (GNUNET_CONTAINER_heap_get_size (dht_lookup_heap) > max_allowed_background_queries)
- {
- /* fail longest-standing DHT request */
- rx = GNUNET_CONTAINER_heap_peek (dht_lookup_heap);
- GNUNET_assert (NULL != rx);
- rx->proc (rx->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rx);
- }
+ "Starting DHT lookup for `%s' in zone `%s' under key `%s'\n",
+ ac->label,
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority),
+ GNUNET_h2s (&query));
+ start_dht_request (rh, &query);
return;
}
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received result from namecache for label `%s'\n",
+ ac->label);
+
if ( (NULL == block) ||
(0 == GNUNET_TIME_absolute_get_remaining (GNUNET_TIME_absolute_ntoh (block->expiration_time)).rel_value_us) )
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Resolution failed for `%s' in zone %s (DHT lookup not permitted by configuration)\n",
ac->label,
- GNUNET_NAMESTORE_z2s (&ac->authority_info.gns_authority));
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority));
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
return;
}
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Decrypting block from the namestore\n");
if (GNUNET_OK !=
- GNUNET_NAMESTORE_block_decrypt (block,
+ GNUNET_GNSRECORD_block_decrypt (block,
auth,
label,
- &handle_gns_resolution_result,
+ &handle_gns_namecache_resolution_result,
rh))
{
GNUNET_break_op (0); /* block was ill-formed */
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
+ /* try DHT instead */
+ GNUNET_GNSRECORD_query_from_public_key (auth,
+ label,
+ &query);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting DHT lookup for `%s' in zone `%s' under key `%s'\n",
+ ac->label,
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority),
+ GNUNET_h2s (&query));
+ start_dht_request (rh, &query);
return;
}
}
/**
- * Lookup tail of our authority chain in the namestore.
+ * Lookup tail of our authority chain in the namecache.
*
* @param rh query we are processing
*/
static void
-recursive_gns_resolution_namestore (struct GNS_ResolverHandle *rh)
+recursive_gns_resolution_namecache (struct GNS_ResolverHandle *rh)
{
struct AuthorityChain *ac = rh->ac_tail;
struct GNUNET_HashCode query;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Starting GNS resolution for `%s' in zone %s\n",
ac->label,
- GNUNET_NAMESTORE_z2s (&ac->authority_info.gns_authority));
- GNUNET_NAMESTORE_query_from_public_key (&ac->authority_info.gns_authority,
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority));
+ GNUNET_GNSRECORD_query_from_public_key (&ac->authority_info.gns_authority,
ac->label,
&query);
- rh->namestore_qe = GNUNET_NAMESTORE_lookup_block (namestore_handle,
- &query,
- &handle_namestore_block_response,
- rh);
- GNUNET_assert (NULL != rh->namestore_qe);
+ if (GNUNET_YES == use_cache)
+ {
+ rh->namecache_qe
+ = GNUNET_NAMECACHE_lookup_block (namecache_handle,
+ &query,
+ &handle_namecache_block_response,
+ rh);
+ GNUNET_assert (NULL != rh->namecache_qe);
+ }
+ else
+ {
+ start_dht_request (rh, &query);
+ }
+}
+
+
+/**
+ * Function called with the result from a revocation check.
+ *
+ * @param cls the `struct GNS_ResovlerHandle`
+ * @param is_valid #GNUNET_YES if the zone was not yet revoked
+ */
+static void
+handle_revocation_result (void *cls,
+ int is_valid)
+{
+ struct GNS_ResolverHandle *rh = cls;
+ struct AuthorityChain *ac = rh->ac_tail;
+
+ rh->rev_check = NULL;
+ if (GNUNET_YES != is_valid)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ _("Zone %s was revoked, resolution fails\n"),
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority));
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ recursive_gns_resolution_namecache (rh);
+}
+
+
+/**
+ * Perform revocation check on tail of our authority chain.
+ *
+ * @param rh query we are processing
+ */
+static void
+recursive_gns_resolution_revocation (struct GNS_ResolverHandle *rh)
+{
+ struct AuthorityChain *ac = rh->ac_tail;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting revocation check for zone %s\n",
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority));
+ rh->rev_check = GNUNET_REVOCATION_query (cfg,
+ &ac->authority_info.gns_authority,
+ &handle_revocation_result,
+ rh);
+ GNUNET_assert (NULL != rh->rev_check);
}
* Task scheduled to continue with the resolution process.
*
* @param cls the `struct GNS_ResolverHandle` of the resolution
- * @param tc task context
*/
static void
-recursive_resolution (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+recursive_resolution (void *cls)
{
struct GNS_ResolverHandle *rh = cls;
- rh->task_id = GNUNET_SCHEDULER_NO_TASK;
+ rh->task_id = NULL;
if (MAX_RECURSION < rh->loop_limiter++)
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
return;
}
if (GNUNET_YES == rh->ac_tail->gns_authority)
- recursive_gns_resolution_namestore (rh);
+ recursive_gns_resolution_revocation (rh);
else
recursive_dns_resolution (rh);
}
* Begin the resolution process from 'name', starting with
* the identification of the zone specified by 'name'.
*
- * @param rh resolution to perform
+ * @param cls the `struct GNS_ResolverHandle`
*/
static void
-start_resolver_lookup (struct GNS_ResolverHandle *rh)
+start_resolver_lookup (void *cls)
{
+ struct GNS_ResolverHandle *rh = cls;
struct AuthorityChain *ac;
- char *x;
- char *y;
- char *pkey;
-
- if ( ( (GNUNET_YES == is_canonical (rh->name)) &&
- (0 != strcmp (GNUNET_GNS_TLD, rh->name)) ) ||
- ( (GNUNET_YES != is_gnu_tld (rh->name)) &&
- (GNUNET_YES != is_zkey_tld (rh->name)) ) )
- {
- /* use standard DNS lookup */
- int af;
+ struct in_addr v4;
+ struct in6_addr v6;
- switch (rh->record_type)
- {
- case GNUNET_DNSPARSER_TYPE_A:
- af = AF_INET;
- break;
- case GNUNET_DNSPARSER_TYPE_AAAA:
- af = AF_INET6;
- break;
- default:
- af = AF_UNSPEC;
- break;
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Doing standard DNS lookup for `%s'\n",
- rh->name);
- rh->std_resolve = GNUNET_RESOLVER_ip_get (rh->name,
- af,
- DNS_LOOKUP_TIMEOUT,
- &handle_dns_result,
- rh);
- return;
- }
- if (is_zkey_tld (rh->name))
+ rh->task_id = NULL;
+ if (1 == inet_pton (AF_INET,
+ rh->name,
+ &v4))
{
- /* Name ends with ".zkey", try to replace authority zone with zkey
- authority */
- GNUNET_free (resolver_lookup_get_next_label (rh)); /* will return "zkey" */
- x = resolver_lookup_get_next_label (rh); /* will return 'x' coordinate */
- y = resolver_lookup_get_next_label (rh); /* will return 'y' coordinate */
- GNUNET_asprintf (&pkey,
- "%s%s",
- x, y);
- if ( (NULL == x) ||
- (NULL == y) ||
- (GNUNET_OK !=
- GNUNET_CRYPTO_ecc_public_sign_key_from_string (pkey,
- strlen (pkey),
- &rh->authority_zone)) )
- {
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- _("Hostname `%s' is not well-formed, resolution fails\n"),
- rh->name);
- rh->task_id = GNUNET_SCHEDULER_add_now (&fail_resolution, rh);
- }
- GNUNET_free_non_null (x);
- GNUNET_free_non_null (y);
- GNUNET_free (pkey);
+ /* name is IPv4 address, pretend it's an A record */
+ struct GNUNET_GNSRECORD_Data rd;
+
+ rd.data = &v4;
+ rd.data_size = sizeof (v4);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_A;
+ rd.flags = 0;
+ rh->proc (rh->proc_cls, 1, &rd);
+ GNS_resolver_lookup_cancel (rh);
+ return;
}
- else
+ if (1 == inet_pton (AF_INET6,
+ rh->name,
+ &v6))
{
- /* Name ends with ".gnu", eat ".gnu" and continue with resolution */
- GNUNET_free (resolver_lookup_get_next_label (rh));
+ /* name is IPv6 address, pretend it's an AAAA record */
+ struct GNUNET_GNSRECORD_Data rd;
+
+ rd.data = &v6;
+ rd.data_size = sizeof (v6);
+ rd.expiration_time = UINT64_MAX;
+ rd.record_type = GNUNET_DNSPARSER_TYPE_AAAA;
+ rd.flags = 0;
+ rh->proc (rh->proc_cls, 1, &rd);
+ GNS_resolver_lookup_cancel (rh);
+ return;
}
+
ac = GNUNET_new (struct AuthorityChain);
ac->rh = rh;
ac->label = resolver_lookup_get_next_label (rh);
+ ac->suggested_shortening_label = NULL;
if (NULL == ac->label)
- /* name was just "gnu", so we default to label '+' */
+ /* name was just the "TLD", so we default to label
+ #GNUNET_GNS_MASTERZONE_STR */
ac->label = GNUNET_strdup (GNUNET_GNS_MASTERZONE_STR);
ac->gns_authority = GNUNET_YES;
ac->authority_info.gns_authority = rh->authority_zone;
* @param zone the zone to perform the lookup in
* @param record_type the record type to look up
* @param name the name to look up
- * @param shorten_key a private key for use with PSEU import (can be NULL)
- * @param only_cached #GNUNET_NO to only check locally not DHT for performance
+ * @param options local options to control local lookup
* @param proc the processor to call on result
* @param proc_cls the closure to pass to @a proc
* @return handle to cancel operation
*/
struct GNS_ResolverHandle *
-GNS_resolver_lookup (const struct GNUNET_CRYPTO_EccPublicSignKey *zone,
+GNS_resolver_lookup (const struct GNUNET_CRYPTO_EcdsaPublicKey *zone,
uint32_t record_type,
const char *name,
- const struct GNUNET_CRYPTO_EccPrivateKey *shorten_key,
- int only_cached,
- GNS_ResultProcessor proc, void *proc_cls)
+ enum GNUNET_GNS_LocalOptions options,
+ GNS_ResultProcessor proc,
+ void *proc_cls)
{
struct GNS_ResolverHandle *rh;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- (NULL == shorten_key)
- ? "Starting lookup for `%s' with shortening disabled\n"
- : "Starting lookup for `%s' with shortening enabled\n",
+ "Starting lookup for `%s'\n",
name);
rh = GNUNET_new (struct GNS_ResolverHandle);
GNUNET_CONTAINER_DLL_insert (rlh_head,
rh->authority_zone = *zone;
rh->proc = proc;
rh->proc_cls = proc_cls;
- rh->only_cached = only_cached;
+ rh->options = options;
rh->record_type = record_type;
rh->name = GNUNET_strdup (name);
rh->name_resolution_pos = strlen (name);
- if (NULL != shorten_key)
- {
- rh->shorten_key = GNUNET_new (struct GNUNET_CRYPTO_EccPrivateKey);
- *rh->shorten_key = *shorten_key;
- }
- start_resolver_lookup (rh);
+ rh->task_id = GNUNET_SCHEDULER_add_now (&start_resolver_lookup,
+ rh);
return rh;
}
rh->ac_tail,
ac);
GNUNET_free (ac->label);
+ GNUNET_free_non_null (ac->suggested_shortening_label);
GNUNET_free (ac);
}
- if (GNUNET_SCHEDULER_NO_TASK != rh->task_id)
+ if (NULL != rh->g2dc)
+ {
+ /* rh->g2dc->rh is NOT in the DLL yet, so to enable us
+ using GNS_resolver_lookup_cancel here, we need to
+ add it first... */
+ if (NULL != rh->g2dc->rh)
+ {
+ GNUNET_CONTAINER_DLL_insert (rlh_head,
+ rlh_tail,
+ rh->g2dc->rh);
+ GNS_resolver_lookup_cancel (rh->g2dc->rh);
+ rh->g2dc->rh = NULL;
+ }
+ if (NULL != rh->g2dc->dns_rh)
+ {
+ GNUNET_RESOLVER_request_cancel (rh->g2dc->dns_rh);
+ rh->g2dc->rh = NULL;
+ }
+ GNUNET_free (rh->g2dc->ns);
+ GNUNET_free (rh->g2dc);
+ rh->g2dc = NULL;
+ }
+ if (NULL != rh->task_id)
{
GNUNET_SCHEDULER_cancel (rh->task_id);
- rh->task_id = GNUNET_SCHEDULER_NO_TASK;
+ rh->task_id = NULL;
}
if (NULL != rh->get_handle)
{
GNUNET_DNSSTUB_resolve_cancel (rh->dns_request);
rh->dns_request = NULL;
}
- if (NULL != rh->namestore_qe)
+ if (NULL != rh->namecache_qe)
+ {
+ GNUNET_NAMECACHE_cancel (rh->namecache_qe);
+ rh->namecache_qe = NULL;
+ }
+ if (NULL != rh->rev_check)
{
- GNUNET_NAMESTORE_cancel (rh->namestore_qe);
- rh->namestore_qe = NULL;
+ GNUNET_REVOCATION_query_cancel (rh->rev_check);
+ rh->rev_check = NULL;
}
if (NULL != rh->std_resolve)
{
dr);
GNUNET_free (dr);
}
- GNUNET_free_non_null (rh->shorten_key);
GNUNET_free (rh->name);
GNUNET_free (rh);
}
/**
* Initialize the resolver
*
- * @param nh the namestore handle
+ * @param nc the namecache handle
* @param dht the dht handle
* @param c configuration handle
* @param max_bg_queries maximum number of parallel background queries in dht
*/
void
-GNS_resolver_init (struct GNUNET_NAMESTORE_Handle *nh,
+GNS_resolver_init (struct GNUNET_NAMECACHE_Handle *nc,
struct GNUNET_DHT_Handle *dht,
const struct GNUNET_CONFIGURATION_Handle *c,
unsigned long long max_bg_queries)
char *dns_ip;
cfg = c;
- namestore_handle = nh;
+ namecache_handle = nc;
dht_handle = dht;
dht_lookup_heap =
GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
max_allowed_background_queries = max_bg_queries;
+ if (GNUNET_SYSERR == (use_cache =
+ GNUNET_CONFIGURATION_get_value_yesno (c,
+ "gns",
+ "USE_CACHE")))
+ use_cache = GNUNET_YES;
+ if (GNUNET_NO == use_cache)
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Namecache disabled\n");
+
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_string (c,
"gns",
GNUNET_CONTAINER_DLL_remove (co_head,
co_tail,
co);
- GNUNET_NAMESTORE_cancel (co->namestore_qe_cache);
+ GNUNET_NAMECACHE_cancel (co->namecache_qe_cache);
GNUNET_free (co);
}
GNUNET_CONTAINER_heap_destroy (dht_lookup_heap);
GNUNET_VPN_disconnect (vpn_handle);
vpn_handle = NULL;
dht_handle = NULL;
- namestore_handle = NULL;
-}
-
-
-/* *************** common helper functions (do not really belong here) *********** */
-
-/**
- * Checks if @a name ends in ".TLD"
- *
- * @param name the name to check
- * @param tld the TLD to check for
- * @return GNUNET_YES or GNUNET_NO
- */
-int
-is_tld (const char* name, const char* tld)
-{
- size_t offset = 0;
-
- if (strlen (name) <= strlen (tld))
- return GNUNET_NO;
- offset = strlen (name) - strlen (tld);
- if (0 != strcmp (name + offset, tld))
- return GNUNET_NO;
- return GNUNET_YES;
+ namecache_handle = NULL;
}
projects / oweals / gnunet.git / blobdiff