* 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)
+ * - revocation checks (use REVOCATION service!), (#3004)
* - DNAME support (#3005)
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_dnsstub_lib.h"
#include "gnunet_dht_service.h"
+#include "gnunet_gnsrecord_lib.h"
+#include "gnunet_namecache_service.h"
#include "gnunet_namestore_service.h"
#include "gnunet_dns_service.h"
#include "gnunet_resolver_service.h"
+#include "gnunet_revocation_service.h"
#include "gnunet_dnsparser_lib.h"
#include "gnunet_gns_service.h"
#include "gns.h"
struct GNS_ResolverHandle *rh;
/**
- * label/name corresponding to the authority
+ * label/name corresponding to the authority
*/
char *label;
-
+
/**
* #GNUNET_YES if the authority was a GNS authority,
* #GNUNET_NO if the authority was a DNS authority.
{
/**
- * The zone of the GNS authority
+ * The zone of the GNS authority
*/
- struct GNUNET_CRYPTO_EccPublicSignKey gns_authority;
+ struct GNUNET_CRYPTO_EcdsaPublicKey gns_authority;
struct
{
} dns_authority;
} authority_info;
-
+
};
uint64_t expiration_time;
/**
- * Number of bytes in 'data'.
+ * Number of bytes in @e data.
*/
size_t data_size;
/**
* Closure for #vpn_allocation_cb.
*/
-struct VpnContext
+struct VpnContext
{
- /**
+ /**
* Which resolution process are we processing.
*/
struct GNS_ResolverHandle *rh;
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;
-
+
/**
* Serialized records.
*/
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 to a currenty pending resolution. On result (positive or
- * negative) the #GNS_ResultProcessor is called.
+ * negative) the #GNS_ResultProcessor is called.
*/
struct GNS_ResolverHandle
{
/**
- * DLL
+ * DLL
*/
struct GNS_ResolverHandle *next;
/**
- * DLL
+ * DLL
*/
struct GNS_ResolverHandle *prev;
/**
- * The top-level GNS authoritative zone to query
+ * 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
+ * called when resolution phase finishes
*/
GNS_ResultProcessor proc;
-
+
/**
- * closure passed to proc
+ * closure passed to @e proc
*/
void* proc_cls;
/**
- * Handle for DHT lookups. should be NULL if no lookups are in progress
+ * 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_DHT_GetHandle *get_handle;
struct GNUNET_RESOLVER_RequestHandle *std_resolve;
/**
- * Pending Namestore 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 GNUNET_CONTAINER_HeapNode *dht_heap_node;
/**
- * DLL to store the authority chain
+ * DLL to store the authority chain
*/
struct AuthorityChain *ac_head;
/**
- * DLL to store the authority chain
+ * DLL to store the authority chain
*/
struct AuthorityChain *ac_tail;
/**
* Private key of the shorten zone, NULL to not shorten.
*/
- struct GNUNET_CRYPTO_EccPrivateKey *shorten_key;
+ struct GNUNET_CRYPTO_EcdsaPrivateKey *shorten_key;
/**
* ID of a task associated with the resolution process.
GNUNET_SCHEDULER_TaskIdentifier task_id;
/**
- * The name to resolve
+ * The name to resolve
*/
char *name;
size_t name_resolution_pos;
/**
- * Use only cache
+ * Use only cache
*/
int only_cached;
/**
* We increment the loop limiter for each step in a recursive
- * resolution. If it passes our threshold (i.e. due to
+ * resolution. If it passes our threshold (i.e. due to
* self-recursion in the resolution, i.e CNAME fun), we stop.
*/
unsigned int loop_limiter;
/**
- * Our handle to the namestore service
+ * Active namestore caching operations.
*/
-static struct GNUNET_NAMESTORE_Handle *namestore_handle;
+struct CacheOps
+{
+
+ /**
+ * Organized in a DLL.
+ */
+ struct CacheOps *next;
+
+ /**
+ * Organized in a DLL.
+ */
+ struct CacheOps *prev;
+
+ /**
+ * Pending Namestore caching task.
+ */
+ struct GNUNET_NAMECACHE_QueueEntry *namecache_qe_cache;
+
+};
+
+
+/**
+ * Our handle to the namecache service
+ */
+static struct GNUNET_NAMECACHE_Handle *namecache_handle;
/**
* Our handle to the vpn service
*/
static struct GNS_ResolverHandle *rlh_tail;
+/**
+ * Organized in a DLL.
+ */
+static struct CacheOps *co_head;
+
+/**
+ * Organized in a DLL.
+ */
+static struct CacheOps *co_tail;
+
+
/**
* Global configuration.
*/
static const struct GNUNET_CONFIGURATION_Handle *cfg;
-
+#if 0
/**
* Check if name is in srv format (_x._y.xxx)
*
GNUNET_free (ndup);
return ret;
}
+#endif
/**
if ('_' != name[0])
return GNUNET_NO;
pos = &name[1];
- while (NULL != (dot = strchr (pos, '.')))
+ while (NULL != (dot = strchr (pos, '.')))
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;
}
/* Don't have this on W32, here's a naive implementation
* Was somehow removed on OS X ... */
void *
-memrchr (const void *s, int c, size_t n)
+memrchr (const void *s,
+ int c,
+ size_t n)
{
- size_t i;
- unsigned char *ucs = (unsigned char *) s;
+ const unsigned char *ucs = s;
+ ssize_t i;
for (i = n - 1; i >= 0; i--)
- if (ucs[i] == c)
+ if (c == (int) ucs[i])
return (void *) &ucs[i];
return NULL;
}
/* done, this was the last one */
len = rh->name_resolution_pos;
rp = rh->name;
- rh->name_resolution_pos = 0;
+ rh->name_resolution_pos = 0;
}
else
{
len = rh->name_resolution_pos - (dot - rh->name) - 1;
rp = dot + 1;
rh->name_resolution_pos = dot - rh->name;
- }
- return GNUNET_strndup (rp, len);
+ }
+ return GNUNET_strndup (rp, len);
}
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++;
+ }
+ GNUNET_assert (i == n);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting standard DNS result with %u records\n",
+ n);
rh->proc (rh->proc_cls,
n,
rd);
* 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;
- rh->std_resolve = NULL;
+ 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;
}
rh->dns_request = NULL;
GNUNET_SCHEDULER_cancel (rh->task_id);
rh->task_id = GNUNET_SCHEDULER_NO_TASK;
- p = GNUNET_DNSPARSER_parse ((const char *) dns,
+ p = GNUNET_DNSPARSER_parse ((const char *) dns,
dns_len);
if (NULL == p)
{
GNS_resolver_lookup_cancel (rh);
return;
}
-
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received DNS response for `%s' with %u answers\n",
+ rh->ac_tail->label,
+ (unsigned int) p->num_answers);
if ( (p->num_answers > 0) &&
(GNUNET_DNSPARSER_TYPE_CNAME == p->answers[0].type) &&
(GNUNET_DNSPARSER_TYPE_CNAME != rh->record_type) )
rh->name = GNUNET_strdup (p->answers[0].data.hostname);
start_resolver_lookup (rh);
GNUNET_DNSPARSER_free_packet (p);
- return;
+ 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;
+ size_t buf_start;
buf_off = 0;
skip = 0;
rec = &p->answers[i];
else if (i < p->num_answers + p->num_authority_records)
rec = &p->authority_records[i - p->num_answers];
- else
+ else
rec = &p->authority_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
case GNUNET_DNSPARSER_TYPE_CNAME:
case GNUNET_DNSPARSER_TYPE_PTR:
case GNUNET_DNSPARSER_TYPE_NS:
+ buf_start = buf_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_name (buf,
sizeof (buf),
skip++;
continue;
}
+ rd[i - skip].data_size = buf_off - 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),
skip++;
continue;
}
+ rd[i - skip].data_size = buf_off - buf_start;
+ rd[i - skip].data = &buf[buf_start];
break;
case GNUNET_DNSPARSER_TYPE_MX:
+ buf_start = buf_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_mx (buf,
sizeof (buf),
skip++;
continue;
}
+ rd[i - skip].data_size = buf_off - buf_start;
+ rd[i - skip].data = &buf[buf_start];
break;
case GNUNET_DNSPARSER_TYPE_SRV:
+ buf_start = buf_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_srv (buf,
sizeof (buf),
skip++;
continue;
}
+ rd[i - skip].data_size = buf_off - buf_start;
+ rd[i - skip].data = &buf[buf_start];
break;
default:
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
continue;
}
}
+ 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);
}
ac = rh->ac_tail;
GNUNET_assert (NULL != ac);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting DNS lookup for `%s'\n",
+ ac->label);
GNUNET_assert (GNUNET_NO == ac->gns_authority);
switch (((const struct sockaddr *) &ac->authority_info.dns_authority.dns_ip)->sa_family)
{
query = GNUNET_new (struct GNUNET_DNSPARSER_Query);
query->name = GNUNET_strdup (ac->label);
query->type = rh->record_type;
- query->class = GNUNET_TUN_DNS_CLASS_INTERNET;
+ query->dns_traffic_class = GNUNET_TUN_DNS_CLASS_INTERNET;
p = GNUNET_new (struct GNUNET_DNSPARSER_Packet);
p->queries = query;
p->num_queries = 1;
UINT16_MAX);
p->flags.opcode = GNUNET_TUN_DNS_OPCODE_QUERY;
p->flags.recursion_desired = 1;
- if (GNUNET_OK !=
+ if (GNUNET_OK !=
GNUNET_DNSPARSER_pack (p, 1024, &dns_request, &dns_request_length))
{
GNUNET_break (0);
* Merge it into our chain.
*
* @param rh resolution we are performing
- * @param cname value of the cname record we got for the current
+ * @param cname value of the cname record we got for the current
* authority chain tail
*/
static void
{
size_t nlen;
char *res;
+ struct AuthorityChain *ac;
nlen = strlen (cname);
if ( (nlen > 2) &&
}
GNUNET_free (rh->name);
rh->name = res;
+ ac = GNUNET_new (struct AuthorityChain);
+ ac->rh = rh;
+ 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)
+ {
+ GNUNET_break (0); /* FIXME suggested label*/
+ GNS_shorten_start (rh->ac_tail->label,
+ NULL,
+ &ac->authority_info.gns_authority,
+ rh->shorten_key);
+ }
+ /* add AC to tail */
+ GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
+ rh->ac_tail,
+ ac);
rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
rh);
return;
static void
handle_gns_resolution_result (void *cls,
unsigned int rd_count,
- const struct GNUNET_NAMESTORE_RecordData *rd);
+ const struct GNUNET_GNSRECORD_Data *rd);
/**
* will match 'result_af' from the request
* @param address IP address (struct in_addr or struct in_addr6, depending on 'af')
* that the VPN allocated for the redirection;
- * traffic to this IP will now be redirected to the
+ * traffic to this IP will now be redirected to the
* specified target peer; NULL on error
*/
static void
{
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)
{
- case AF_INET:
+ case AF_INET:
rd[i].record_type = GNUNET_DNSPARSER_TYPE_A;
rd[i].data_size = sizeof (struct in_addr);
rd[i].expiration_time = GNUNET_TIME_relative_to_absolute (VPN_TIMEOUT).abs_value_us;
break;
default:
GNUNET_assert (0);
- }
+ }
break;
}
}
GNUNET_assert (i < vpn_ctx->rd_count);
- handle_gns_resolution_result (rh,
+ handle_gns_resolution_result (rh,
vpn_ctx->rd_count,
rd);
GNUNET_free (vpn_ctx->rd_data);
}
+/**
+ * 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;
+ unsigned int j;
+ 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... */
+ GNUNET_CONTAINER_DLL_insert (rlh_head,
+ rlh_tail,
+ rh->g2dc->rh);
+ rh->g2dc->rh = NULL;
+ 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;
+ strcpy (ac->authority_info.dns_authority.name,
+ rh->g2dc->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) ? "." : "",
+ 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);
+}
+
+
/**
* Process a records that were decrypted from a block.
*
- * @param cls closure with the 'struct GNS_ResolverHandle'
+ * @param cls closure with the `struct GNS_ResolverHandle`
* @param rd_count number of entries in @a rd array
* @param rd array of records with data to store
*/
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;
char *cname;
struct VpnContext *vpn_ctx;
const struct GNUNET_TUN_GnsVpnRecord *vpn;
const char *vname;
+ const char *suggested_label;
struct GNUNET_HashCode vhash;
int af;
char scratch[UINT16_MAX];
size_t scratch_off;
size_t scratch_start;
size_t off;
- struct GNUNET_NAMESTORE_RecordData rd_new[rd_count];
+ int c2;
+ struct GNUNET_GNSRECORD_Data rd_new[rd_count];
unsigned int rd_off;
-
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Resolution succeeded for `%s' in zone %s, got %u records\n",
+ rh->ac_tail->label,
+ GNUNET_GNSRECORD_z2s (&rh->ac_tail->authority_info.gns_authority),
+ rd_count);
if (0 == rh->name_resolution_pos)
{
/* top-level match, are we done yet? */
(GNUNET_DNSPARSER_TYPE_CNAME == rd[0].record_type) &&
(GNUNET_DNSPARSER_TYPE_CNAME != rh->record_type) )
{
- cname = GNUNET_strndup (rd[0].data,
- rd[0].data_size);
- handle_gns_cname_result (rh,
+ off = 0;
+ cname = GNUNET_DNSPARSER_parse_name (rd[0].data,
+ rd[0].data_size,
+ &off);
+ if ( (NULL == cname) ||
+ (off != rd[0].data_size) )
+ {
+ GNUNET_break_op (0);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ GNUNET_free_non_null (cname);
+ return;
+ }
+ handle_gns_cname_result (rh,
cname);
GNUNET_free (cname);
- return;
+ return;
}
/* If A/AAAA was requested, but we got a VPN
record, we convert it to A/AAAA using GNUnet VPN */
{
for (i=0;i<rd_count;i++)
{
- if (GNUNET_NAMESTORE_TYPE_VPN == rd[i].record_type)
+ switch (rd[i].record_type)
{
- af = (GNUNET_DNSPARSER_TYPE_A == rh->record_type) ? AF_INET : AF_INET6;
- if (sizeof (struct GNUNET_TUN_GnsVpnRecord) <
- rd[i].data_size)
+ case GNUNET_GNSRECORD_TYPE_VPN:
{
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
+ af = (GNUNET_DNSPARSER_TYPE_A == rh->record_type) ? AF_INET : AF_INET6;
+ if (sizeof (struct GNUNET_TUN_GnsVpnRecord) <
+ rd[i].data_size)
+ {
+ GNUNET_break_op (0);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ vpn = (const struct GNUNET_TUN_GnsVpnRecord *) rd[i].data;
+ vname = (const char *) &vpn[1];
+ if ('\0' != vname[rd[i].data_size - 1 - sizeof (struct GNUNET_TUN_GnsVpnRecord)])
+ {
+ GNUNET_break_op (0);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ GNUNET_CRYPTO_hash (vname,
+ strlen (vname), // FIXME: +1?
+ &vhash);
+ vpn_ctx = GNUNET_new (struct VpnContext);
+ rh->vpn_ctx = vpn_ctx;
+ vpn_ctx->rh = rh;
+ 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_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),
+ &vpn->peer,
+ &vhash,
+ GNUNET_TIME_relative_to_absolute (VPN_TIMEOUT),
+ &vpn_allocation_cb,
+ rh);
+ return;
}
- vpn = (const struct GNUNET_TUN_GnsVpnRecord *) rd[i].data;
- vname = (const char *) &vpn[1];
- if ('\0' != vname[rd[i].data_size - 1 - sizeof (struct GNUNET_TUN_GnsVpnRecord)])
+ case GNUNET_GNSRECORD_TYPE_GNS2DNS:
{
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
+ /* delegation to DNS */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found GNS2DNS record, delegating to DNS!\n");
+ goto do_recurse;
}
- GNUNET_CRYPTO_hash (vname,
- strlen (vname), // FIXME: +1?
- &vhash);
- 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,
- 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->vpn_request = GNUNET_VPN_redirect_to_peer (vpn_handle,
- af,
- ntohs (vpn->proto),
- &vpn->peer,
- &vhash,
- GNUNET_NO,
- GNUNET_TIME_relative_to_absolute (VPN_TIMEOUT),
- &vpn_allocation_cb,
- rh);
- return;
+ default:
+ break;
}
}
}
else
{
cname = translate_dot_plus (rh, cname);
+ GNUNET_break (NULL != cname);
scratch_start = scratch_off;
if (GNUNET_OK !=
GNUNET_DNSPARSER_builder_add_name (scratch,
rd_off++;
}
}
- GNUNET_free_non_null (cname);
+ GNUNET_free_non_null (cname);
}
break;
case GNUNET_DNSPARSER_TYPE_SOA:
}
}
if (NULL != soa)
- GNUNET_DNSPARSER_free_soa (soa);
+ GNUNET_DNSPARSER_free_soa (soa);
}
break;
case GNUNET_DNSPARSER_TYPE_MX:
}
}
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
+ /* 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,
}
}
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_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);
- }
+
+ /* tigger shortening */
+ if (NULL != rh->shorten_key)
+ {
+ suggested_label = NULL;
+ for (c2 = 0; c2< rd_count; c2++)
+ {
+ if ((GNUNET_GNSRECORD_TYPE_NICK ==rd[c2].record_type) &&
+ (rd[i].data_size > 0) &&
+ (((const char *) rd[c2].data)[rd[c2].data_size -1] == '\0'))
+ suggested_label = (const char *) rd->data;
+ }
+ if (NULL != suggested_label)
+ GNS_shorten_start (rh->ac_tail->label,
+ suggested_label,
+ &pub,
+ rh->shorten_key);
+ }
+ 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);
+ 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 */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found GNS2DNS record, delegating to DNS!\n");
+ goto do_recurse;
+ }
default:
+ rd_off++;
break;
}
}
-
+
/* yes, we are done, return result */
+ 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;
+ return;
}
+ do_recurse:
/* need to recurse, check if we can */
for (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);
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
- return;
+ return;
}
/* expand authority chain */
ac = GNUNET_new (struct AuthorityChain);
ac->gns_authority = GNUNET_YES;
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,
+ if (NULL != rh->shorten_key)
+ {
+ suggested_label = NULL;
+ for (c2 = 0; c2< rd_count; c2++)
+ {
+ if ((GNUNET_GNSRECORD_TYPE_NICK ==rd[c2].record_type) &&
+ (rd[c2].data_size > 0) &&
+ ((const char *) rd[c2].data)[rd[c2].data_size -1] == '\0')
+ suggested_label = (const char *) rd[c2].data;
+ }
+ if (NULL != suggested_label)
+ GNS_shorten_start (rh->ac_tail->label,
+ suggested_label,
&ac->authority_info.gns_authority,
- rh->shorten_key);
+ rh->shorten_key);
+ }
/* add AC to tail */
GNUNET_CONTAINER_DLL_insert_tail (rh->ac_head,
rh->ac_tail,
/* recurse */
rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
rh);
- break;
- case GNUNET_DNSPARSER_TYPE_NS:
- /* resolution continues within DNS */
- if (GNUNET_DNSPARSER_MAX_NAME_LENGTH < rd[i].data_size)
+ return;
+ case GNUNET_GNSRECORD_TYPE_GNS2DNS:
{
- GNUNET_break_op (0);
- rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
- return;
+ /* resolution continues within DNS */
+ struct Gns2DnsContext *g2dc;
+ char *ip;
+ char *ns;
+
+ 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);
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Resolving `%s' to determine IP address of DNS server for GNS2DNS transition\n",
+ ip);
+ /* resolve 'ip' to determine the IP(s) of the DNS
+ resolver to use */
+ g2dc = GNUNET_new (struct Gns2DnsContext);
+ g2dc->ns = ns;
+ g2dc->rh = GNUNET_new (struct GNS_ResolverHandle);
+ g2dc->rh->authority_zone = rh->ac_tail->authority_info.gns_authority;
+ ip = translate_dot_plus (rh, ip);
+ g2dc->rh->name = ip;
+ g2dc->rh->name_resolution_pos = strlen (ip);
+ g2dc->rh->proc = &handle_gns2dns_result;
+ g2dc->rh->proc_cls = rh;
+ g2dc->rh->record_type = GNUNET_GNSRECORD_TYPE_ANY;
+ g2dc->rh->only_cached = GNUNET_NO;
+ g2dc->rh->loop_limiter = rh->loop_limiter + 1;
+ rh->g2dc = g2dc;
+ start_resolver_lookup (g2dc->rh);
+ return;
}
- /* find associated A/AAAA record */
- sa = NULL;
- sa_len = 0;
- for (j=0;j<rd_count;j++)
+ case GNUNET_DNSPARSER_TYPE_CNAME:
{
- switch (rd[j].record_type)
+ char *cname;
+
+ off = 0;
+ cname = GNUNET_DNSPARSER_parse_name (rd[i].data,
+ rd[i].data_size,
+ &off);
+ if ( (NULL == cname) ||
+ (off != rd[i].data_size) )
{
- case GNUNET_DNSPARSER_TYPE_A:
- if (sizeof (struct in_addr) != rd[i].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[i].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;
+ GNUNET_break_op (0); /* record not well-formed */
+ rh->proc (rh->proc_cls, 0, NULL);
+ GNS_resolver_lookup_cancel (rh);
+ GNUNET_free_non_null (cname);
+ return;
}
- 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;
- strncpy (ac->authority_info.dns_authority.name,
- rd[i].data,
- rd[i].data_size);
- ac->authority_info.dns_authority.name[rd[i].data_size] = '\0';
- 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",
- (int) rh->name_resolution_pos,
- rh->name,
- ac->authority_info.dns_authority.name);
- 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);
+ handle_gns_cname_result (rh,
+ cname);
+ GNUNET_free (cname);
return;
}
- /* recurse */
- rh->task_id = GNUNET_SCHEDULER_add_now (&recursive_resolution,
- rh);
- return;
- case GNUNET_DNSPARSER_TYPE_CNAME:
- cname = GNUNET_strndup (rd[i].data,
- rd[i].data_size);
- handle_gns_cname_result (rh,
- cname);
- GNUNET_free (cname);
- return;
/* FIXME: handle DNAME */
default:
/* skip */
* Function called once the namestore has completed the request for
* caching a block.
*
- * @param cls closure with the 'struct GNS_ResolverHandle'
+ * @param cls closure with the `struct CacheOps`
* @param success #GNUNET_OK on success
* @param emsg error message
*/
static void
-namestore_cache_continuation (void *cls,
+namecache_cache_continuation (void *cls,
int32_t success,
const char *emsg)
{
- struct GNS_ResolverHandle *rh = cls;
+ struct CacheOps *co = cls;
- rh->namestore_qe = NULL;
+ co->namecache_qe_cache = NULL;
if (NULL != emsg)
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Failed to cache GNS resolution: %s\n"),
emsg);
+ GNUNET_CONTAINER_DLL_remove (co_head,
+ co_tail,
+ co);
+ GNUNET_free (co);
}
* Iterator called on each result obtained for a DHT
* operation that expects a reply
*
- * @param cls closure with the 'struct GNS_ResolverHandle'
+ * @param cls closure with the `struct GNS_ResolverHandle`
* @param exp when will this value expire
* @param key key of the result
* @param get_path peers on reply path (or NULL if not recorded)
* [0] = datastore's first neighbor, [length - 1] = local peer
- * @param get_path_length number of entries in get_path
+ * @param get_path_length number of entries in @a get_path
* @param put_path peers on the PUT path (or NULL if not recorded)
* [0] = origin, [length - 1] = datastore
- * @param put_path_length number of entries in get_path
+ * @param put_path_length number of entries in @a put_path
* @param type type of the result
* @param size number of bytes in data
* @param data pointer to the result data
static void
handle_dht_response (void *cls,
struct GNUNET_TIME_Absolute exp,
- const struct GNUNET_HashCode * key,
+ const struct GNUNET_HashCode *key,
const struct GNUNET_PeerIdentity *get_path,
unsigned int get_path_length,
- const struct GNUNET_PeerIdentity *put_path,
+ const struct GNUNET_PeerIdentity *put_path,
unsigned int put_path_length,
enum GNUNET_BLOCK_Type type,
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;
+
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;
- if (size < sizeof (struct GNUNET_NAMESTORE_Block))
+ rh->dht_heap_node = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Handling response from the DHT\n");
+ if (size < sizeof (struct GNUNET_GNSRECORD_Block))
{
/* how did this pass DHT block validation!? */
GNUNET_break (0);
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
- return;
+ return;
}
- block = data;
+ block = data;
if (size !=
- ntohs (block->purpose.size) +
- sizeof (struct GNUNET_CRYPTO_EccPublicSignKey) +
- sizeof (struct GNUNET_CRYPTO_EccSignature))
+ ntohl (block->purpose.size) +
+ sizeof (struct GNUNET_CRYPTO_EcdsaPublicKey) +
+ sizeof (struct GNUNET_CRYPTO_EcdsaSignature))
{
/* how did this pass DHT block validation!? */
GNUNET_break (0);
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
- return;
+ 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 */
- rh->namestore_qe = GNUNET_NAMESTORE_block_cache (namestore_handle,
- block,
- &namestore_cache_continuation,
- rh);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Caching response from the DHT in namestore\n");
+ co = GNUNET_new (struct CacheOps);
+ co->namecache_qe_cache = GNUNET_NAMECACHE_block_cache (namecache_handle,
+ block,
+ &namecache_cache_continuation,
+ co);
+ GNUNET_CONTAINER_DLL_insert (co_head,
+ co_tail,
+ co);
}
* @param cls closure with the `struct GNS_ResolverHandle`
* @param block block that was stored in the namestore
*/
-static void
+static void
handle_namestore_block_response (void *cls,
- const struct GNUNET_NAMESTORE_Block *block)
+ 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,
+ GNUNET_GNSRECORD_query_from_public_key (auth,
label,
&query);
- rh->namestore_qe = NULL;
+ GNUNET_assert (NULL != rh->namecache_qe);
+ rh->namecache_qe = NULL;
if ( (GNUNET_NO == rh->only_cached) &&
( (NULL == block) ||
(0 == GNUNET_TIME_absolute_get_remaining (GNUNET_TIME_absolute_ntoh (block->expiration_time)).rel_value_us) ) )
{
/* Namestore knows nothing; try DHT lookup */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting DHT lookup for `%s' in zone %s\n",
+ ac->label,
+ GNUNET_GNSRECORD_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,
(0 == GNUNET_TIME_absolute_get_remaining (GNUNET_TIME_absolute_ntoh (block->expiration_time)).rel_value_us) )
{
/* DHT not permitted and no local result, fail */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Resolution failed for `%s' in zone %s (DHT lookup not permitted by configuration)\n",
+ ac->label,
+ GNUNET_GNSRECORD_z2s (&ac->authority_info.gns_authority));
rh->proc (rh->proc_cls, 0, NULL);
GNS_resolver_lookup_cancel (rh);
return;
}
if (GNUNET_OK !=
- GNUNET_NAMESTORE_block_decrypt (block,
+ GNUNET_GNSRECORD_block_decrypt (block,
auth,
label,
&handle_gns_resolution_result,
struct AuthorityChain *ac = rh->ac_tail;
struct GNUNET_HashCode query;
- GNUNET_NAMESTORE_query_from_public_key (&ac->authority_info.gns_authority,
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Starting GNS resolution for `%s' in zone %s\n",
+ ac->label,
+ 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,
+ rh->namecache_qe = GNUNET_NAMECACHE_lookup_block (namecache_handle,
&query,
&handle_namestore_block_response,
rh);
+ GNUNET_assert (NULL != rh->namecache_qe);
+}
+
+
+/**
+ * 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_namestore (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);
}
return;
}
if (GNUNET_YES == rh->ac_tail->gns_authority)
- recursive_gns_resolution_namestore (rh);
+ recursive_gns_resolution_revocation (rh);
else
recursive_dns_resolution (rh);
}
start_resolver_lookup (struct GNS_ResolverHandle *rh)
{
struct AuthorityChain *ac;
- char *x;
char *y;
- char *pkey;
+ struct in_addr v4;
+ struct in6_addr v6;
+ if (1 == inet_pton (AF_INET,
+ rh->name,
+ &v4))
+ {
+ /* 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;
+ }
+ if (1 == inet_pton (AF_INET6,
+ rh->name,
+ &v6))
+ {
+ /* 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;
+ }
if ( ( (GNUNET_YES == is_canonical (rh->name)) &&
(0 != strcmp (GNUNET_GNS_TLD, rh->name)) ) ||
( (GNUNET_YES != is_gnu_tld (rh->name)) &&
af = AF_UNSPEC;
break;
}
- rh->std_resolve = GNUNET_RESOLVER_ip_get (rh->name,
+ 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,
/* 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) ||
+ if ( (NULL == y) ||
(GNUNET_OK !=
- GNUNET_CRYPTO_ecc_public_sign_key_from_string (pkey,
- strlen (pkey),
- &rh->authority_zone)) )
+ GNUNET_CRYPTO_ecdsa_public_key_from_string (y,
+ strlen (y),
+ &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);
}
else
{
* @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,
+ const struct GNUNET_CRYPTO_EcdsaPrivateKey *shorten_key,
int only_cached,
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",
+ name);
rh = GNUNET_new (struct GNS_ResolverHandle);
GNUNET_CONTAINER_DLL_insert (rlh_head,
rlh_tail,
rh->name_resolution_pos = strlen (name);
if (NULL != shorten_key)
{
- rh->shorten_key = GNUNET_new (struct GNUNET_CRYPTO_EccPrivateKey);
+ rh->shorten_key = GNUNET_new (struct GNUNET_CRYPTO_EcdsaPrivateKey);
*rh->shorten_key = *shorten_key;
}
start_resolver_lookup (rh);
GNUNET_free (ac->label);
GNUNET_free (ac);
}
+ 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;
+ }
+ GNUNET_free (rh->g2dc->ns);
+ GNUNET_free (rh->g2dc);
+ rh->g2dc = NULL;
+ }
if (GNUNET_SCHEDULER_NO_TASK != rh->task_id)
{
GNUNET_SCHEDULER_cancel (rh->task_id);
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)
{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Canceling standard DNS resolution\n");
GNUNET_RESOLVER_request_cancel (rh->std_resolve);
rh->std_resolve = NULL;
}
/**
* 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);
GNS_resolver_done ()
{
struct GNS_ResolverHandle *rh;
+ struct CacheOps *co;
/* abort active resolutions */
while (NULL != (rh = rlh_head))
{
rh->proc (rh->proc_cls, 0, NULL);
- GNS_resolver_lookup_cancel (rh);
+ GNS_resolver_lookup_cancel (rh);
+ }
+ while (NULL != (co = co_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (co_head,
+ co_tail,
+ co);
+ GNUNET_NAMECACHE_cancel (co->namecache_qe_cache);
+ GNUNET_free (co);
}
GNUNET_CONTAINER_heap_destroy (dht_lookup_heap);
dht_lookup_heap = NULL;
GNUNET_VPN_disconnect (vpn_handle);
vpn_handle = NULL;
dht_handle = NULL;
- namestore_handle = NULL;
+ namecache_handle = NULL;
}
projects / oweals / gnunet.git / blobdiff