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authorMatthias Wachs <wachs@net.in.tum.de>2013-04-09 08:22:42 +0000
committerMatthias Wachs <wachs@net.in.tum.de>2013-04-09 08:22:42 +0000
commit02373929074ae77e5cfc895963da2aec5d6abb04 (patch)
tree852d497547efa46d962a8d0a9ae1e9c6db6b2df9 /src
parent09ace7389b948cb81e6022504957011976ff0991 (diff)
initial changes to support 2 hellos
Diffstat (limited to 'src')
-rw-r--r--src/peerinfo/gnunet-service-peerinfo.c381
1 files changed, 277 insertions, 104 deletions
diff --git a/src/peerinfo/gnunet-service-peerinfo.c b/src/peerinfo/gnunet-service-peerinfo.c
index 26e54f320..32e50f348 100644
--- a/src/peerinfo/gnunet-service-peerinfo.c
+++ b/src/peerinfo/gnunet-service-peerinfo.c
@@ -88,6 +88,22 @@ struct TransmitContext
int friend_only;
};
+/**
+ * Result of reading a file
+ */
+struct ReadHostFileContext
+{
+ /**
+ * Hello for the peer (can be NULL)
+ */
+ struct GNUNET_HELLO_Message *hello;
+
+ /**
+ * Friend only hello for the peer (can be NULL)
+ */
+ struct GNUNET_HELLO_Message *friend_only_hello;
+};
+
/**
* Client notification context
@@ -156,18 +172,24 @@ static struct NotificationContext *nc_tail;
* @return generated notification message
*/
static struct InfoMessage *
-make_info_message (const struct HostEntry *he)
+make_info_message (const struct HostEntry *he, int include_friend_only)
{
struct InfoMessage *im;
+ struct GNUNET_HELLO_Message *src;
size_t hs;
- hs = (NULL == he->hello) ? 0 : GNUNET_HELLO_size (he->hello);
+ if (GNUNET_YES == include_friend_only)
+ src = he->friend_only_hello;
+ else
+ src = he->hello;
+
+ hs = (NULL == src) ? 0 : GNUNET_HELLO_size (src);
im = GNUNET_malloc (sizeof (struct InfoMessage) + hs);
im->header.size = htons (hs + sizeof (struct InfoMessage));
im->header.type = htons (GNUNET_MESSAGE_TYPE_PEERINFO_INFO);
im->peer = he->identity;
- if (he->hello != NULL)
- memcpy (&im[1], he->hello, hs);
+ if (NULL != src)
+ memcpy (&im[1], src, hs);
return im;
}
@@ -246,79 +268,155 @@ get_host_filename (const struct GNUNET_PeerIdentity *id)
static void
notify_all (struct HostEntry *entry)
{
- struct InfoMessage *msg;
+ struct InfoMessage *msg_pub;
+ struct InfoMessage *msg_friend;
struct NotificationContext *cur;
- msg = make_info_message (entry);
+ msg_pub = make_info_message (entry, GNUNET_NO);
+ msg_friend = make_info_message (entry, GNUNET_YES);
for (cur = nc_head; NULL != cur; cur = cur->next)
{
- if ((NULL != entry->hello) &&
- (GNUNET_YES == GNUNET_HELLO_is_friend_only (entry->hello)) &&
- (GNUNET_NO == cur->include_friend_only))
- continue; /* Friend only HELLO this client should not get */
-
- GNUNET_SERVER_notification_context_unicast (notify_list,
- cur->client,
- &msg->header,
- GNUNET_NO);
+ if (GNUNET_NO == cur->include_friend_only)
+ GNUNET_SERVER_notification_context_unicast (notify_list,
+ cur->client,
+ &msg_pub->header,
+ GNUNET_NO);
+ if (GNUNET_YES == cur->include_friend_only)
+ GNUNET_SERVER_notification_context_unicast (notify_list,
+ cur->client,
+ &msg_friend->header,
+ GNUNET_NO);
}
- GNUNET_free (msg);
+ GNUNET_free (msg_pub);
+ GNUNET_free (msg_friend);
}
/**
- * Try to read the HELLO in the given filename and discard expired
- * addresses. Removes the file if the HELLO is mal-formed. If all
+ * Try to read the HELLOs in the given filename and discard expired
+ * addresses. Removes the file if one the HELLO is mal-formed. If all
* addresses are expired, the HELLO is also removed (but the HELLO
* with the public key is still returned if it was found and valid).
*
* @param fn name of the file
* @param unlink_garbage if GNUNET_YES, try to remove useless files
- * @return HELLO of the file, NULL on error
*/
-static struct GNUNET_HELLO_Message *
-read_host_file (const char *fn,
- int unlink_garbage)
+static void
+read_host_file (const char *fn, int unlink_garbage, struct ReadHostFileContext *r)
{
char buffer[GNUNET_SERVER_MAX_MESSAGE_SIZE - 1] GNUNET_ALIGN;
- const struct GNUNET_HELLO_Message *hello;
- struct GNUNET_HELLO_Message *hello_clean;
- int size;
+ const struct GNUNET_HELLO_Message *hello_1st;
+ const struct GNUNET_HELLO_Message *hello_2nd;
+ struct GNUNET_HELLO_Message *hello_clean_1st;
+ struct GNUNET_HELLO_Message *hello_clean_2nd;
+ int size_1st;
+ int size_2nd;
+ int size_total;
struct GNUNET_TIME_Absolute now;
unsigned int left;
+ hello_1st = NULL;
+ hello_2nd = NULL;
+ hello_clean_1st = NULL;
+ hello_clean_2nd = NULL;
+ size_1st = 0;
+ size_2nd = 0;
+ size_total = 0;
+ r->friend_only_hello = NULL;
+ r->hello = NULL;
+
if (GNUNET_YES != GNUNET_DISK_file_test (fn))
- return NULL;
- size = GNUNET_DISK_fn_read (fn, buffer, sizeof (buffer));
- hello = (const struct GNUNET_HELLO_Message *) buffer;
- if ((size < sizeof (struct GNUNET_MessageHeader)) ||
- (size != ntohs ((((const struct GNUNET_MessageHeader *) hello)->size)))
- || (size != GNUNET_HELLO_size (hello)))
+ return;
+
+ size_total = GNUNET_DISK_fn_read (fn, buffer, sizeof (buffer));
+ if (size_total < sizeof (struct GNUNET_MessageHeader))
{
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to parse HELLO in file `%s'\n"),
- fn);
- if ( (GNUNET_YES == unlink_garbage) &&
- (0 != UNLINK (fn)) )
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s': %s\n"),
+ fn, "Fail has invalid size");
+ if ( (GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)) )
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
- return NULL;
+ return;
+ }
+
+ hello_1st = (const struct GNUNET_HELLO_Message *) buffer;
+ size_1st = ntohs (((const struct GNUNET_MessageHeader *) hello_1st)->size);
+ if ((size_1st < sizeof (struct GNUNET_MessageHeader)) ||
+ (size_1st != GNUNET_HELLO_size (hello_1st)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s': %s\n"),
+ fn, "1nd HELLO has wrong size");
+ if ((GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ return;
+ }
+
+ if (size_total > size_1st)
+ {
+ hello_2nd = (const struct GNUNET_HELLO_Message *) &buffer[size_1st];
+ size_2nd = ntohs (((const struct GNUNET_MessageHeader *) hello_2nd)->size);
+ if ((size_2nd < sizeof (struct GNUNET_MessageHeader)) ||
+ (size_2nd != GNUNET_HELLO_size (hello_2nd)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s': %s\n"),
+ fn, "2nd HELLO has wrong size");
+ if ((GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ return;
+ }
}
+
+ if (size_total != (size_1st + size_2nd))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s': %s\n"),
+ fn, "Multiple HELLOs but total size is wrong");
+ if ((GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ return;
+ }
+
now = GNUNET_TIME_absolute_get ();
- hello_clean =
- GNUNET_HELLO_iterate_addresses (hello, GNUNET_YES, &discard_expired,
- &now);
+
+ hello_clean_1st = GNUNET_HELLO_iterate_addresses (hello_1st, GNUNET_YES,
+ &discard_expired, &now);
left = 0;
- (void) GNUNET_HELLO_iterate_addresses (hello, GNUNET_NO, &count_addresses,
- &left);
+ (void) GNUNET_HELLO_iterate_addresses (hello_1st, GNUNET_NO,
+ &count_addresses, &left);
if (0 == left)
{
/* no addresses left, remove from disk */
- if ( (GNUNET_YES == unlink_garbage) &&
- (0 != UNLINK (fn)) )
+ if ((GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)))
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
}
- return hello_clean;
+
+ if (GNUNET_NO == GNUNET_HELLO_is_friend_only(hello_clean_1st))
+ r->hello = hello_clean_1st;
+ else
+ r->friend_only_hello = hello_clean_1st;
+
+ if (NULL != hello_2nd)
+ {
+ hello_clean_2nd = GNUNET_HELLO_iterate_addresses (hello_2nd, GNUNET_YES,
+ &discard_expired, &now);
+ left = 0;
+ (void) GNUNET_HELLO_iterate_addresses (hello_2nd, GNUNET_NO,
+ &count_addresses, &left);
+ if (0 == left)
+ {
+ /* no addresses left, remove from disk */
+ if ((GNUNET_YES == unlink_garbage) && (0 != UNLINK (fn)))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", fn);
+ }
+
+ if (GNUNET_NO == GNUNET_HELLO_is_friend_only(hello_clean_2nd))
+ r->hello = hello_clean_2nd;
+ else
+ r->friend_only_hello = hello_clean_2nd;
+ }
}
@@ -331,6 +429,7 @@ static void
add_host_to_known_hosts (const struct GNUNET_PeerIdentity *identity)
{
struct HostEntry *entry;
+ struct ReadHostFileContext r;
char *fn;
entry = GNUNET_CONTAINER_multihashmap_get (hostmap, &identity->hashPubKey);
@@ -345,7 +444,9 @@ add_host_to_known_hosts (const struct GNUNET_PeerIdentity *identity)
fn = get_host_filename (identity);
if (NULL != fn)
{
- entry->hello = read_host_file (fn, GNUNET_YES);
+ read_host_file (fn, GNUNET_YES, &r);
+ entry->hello = r.hello;
+ entry->hello = r.friend_only_hello;
GNUNET_free (fn);
}
notify_all (entry);
@@ -406,10 +507,11 @@ hosts_directory_scan_callback (void *cls, const char *fullname)
{
struct DirScanContext *dsc = cls;
struct GNUNET_PeerIdentity identity;
+ struct ReadHostFileContext r;
const char *filename;
struct HostEntry *entry;
- struct GNUNET_HELLO_Message *hello;
- struct GNUNET_PeerIdentity id;
+ struct GNUNET_PeerIdentity id_public;
+ struct GNUNET_PeerIdentity id_friend;
if (GNUNET_YES != GNUNET_DISK_file_test (fullname))
return GNUNET_OK; /* ignore non-files */
@@ -432,20 +534,32 @@ hosts_directory_scan_callback (void *cls, const char *fullname)
GNUNET_CRYPTO_hash_from_string (filename, &identity.hashPubKey))
{
/* odd filename, but might still be valid, try getting identity from HELLO */
- if ( (NULL != (hello = read_host_file (filename,
- dsc->remove_files))) &&
- (GNUNET_OK ==
- GNUNET_HELLO_get_id (hello,
- &id)) )
- {
- /* ok, found something valid, remember HELLO */
+ read_host_file (filename, dsc->remove_files, &r);
+ if ( ((NULL != r.hello) &&
+ (GNUNET_OK == GNUNET_HELLO_get_id (r.hello, &id_public))) ||
+ ((NULL != r.friend_only_hello) &&
+ (GNUNET_OK == GNUNET_HELLO_get_id (r.friend_only_hello, &id_friend))) )
+ {
+ if ( (NULL != r.hello) && (NULL != r.friend_only_hello) &&
+ (0 != memcmp (&id_friend, &id_public, sizeof (id_friend))) )
+ {
+ /* HELLOs are not for the same peer */
+ GNUNET_break (0);
+ if (GNUNET_YES == dsc->remove_files)
+ remove_garbage (fullname);
+ return GNUNET_OK;
+ }
+
+ /* ok, found something valid, remember HELLO */
entry = GNUNET_malloc (sizeof (struct HostEntry));
- entry->identity = id;
+ entry->identity = id_friend;
GNUNET_CONTAINER_multihashmap_put (hostmap, &entry->identity.hashPubKey, entry,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
- entry->hello = hello;
- notify_all (entry);
- dsc->matched++;
+ entry->hello = r.hello;
+ entry->hello = r.friend_only_hello;
+ notify_all (entry);
+ dsc->matched++;
+
return GNUNET_OK;
}
if (GNUNET_YES == dsc->remove_files)
@@ -494,6 +608,29 @@ cron_scan_directory_data_hosts (void *cls,
}
+static struct GNUNET_HELLO_Message *
+update_friend_hello (const struct GNUNET_HELLO_Message *hello,
+ const struct GNUNET_HELLO_Message *friend_hello)
+{
+ struct GNUNET_HELLO_Message * res;
+ struct GNUNET_CRYPTO_EccPublicKeyBinaryEncoded pk;
+
+ if (NULL != friend_hello)
+ {
+ res = GNUNET_HELLO_merge (hello, friend_hello);
+ GNUNET_assert (GNUNET_YES == GNUNET_HELLO_is_friend_only (res));
+ return res;
+ }
+
+ GNUNET_HELLO_get_key (hello, &pk);
+ res = GNUNET_HELLO_create (&pk, NULL, NULL, GNUNET_YES);
+ res = GNUNET_HELLO_merge (hello, res);
+ GNUNET_assert (GNUNET_YES == GNUNET_HELLO_is_friend_only (res));
+ return res;
+}
+
+
+
/**
* Bind a host address (hello) to a hostId.
*
@@ -507,59 +644,77 @@ bind_address (const struct GNUNET_PeerIdentity *peer,
char *fn;
struct HostEntry *host;
struct GNUNET_HELLO_Message *mrg;
+ struct GNUNET_HELLO_Message **dest;
struct GNUNET_TIME_Absolute delta;
unsigned int cnt;
+ int friend_hello_type;
add_host_to_known_hosts (peer);
host = GNUNET_CONTAINER_multihashmap_get (hostmap, &peer->hashPubKey);
GNUNET_assert (NULL != host);
- if (NULL == host->hello)
+ friend_hello_type = GNUNET_HELLO_is_friend_only (hello);
+
+ dest = NULL;
+ if (GNUNET_YES == friend_hello_type)
{
- host->hello = GNUNET_malloc (GNUNET_HELLO_size (hello));
- memcpy (host->hello, hello, GNUNET_HELLO_size (hello));
+ dest = &host->friend_only_hello;
}
else
{
+ dest = &host->hello;
+ }
- if (GNUNET_HELLO_is_friend_only (host->hello) != GNUNET_HELLO_is_friend_only (hello))
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Merging public with friend only HELLO, result will be friend-only!\n");
- mrg = GNUNET_HELLO_merge (host->hello, hello);
- delta = GNUNET_HELLO_equals (mrg, host->hello, GNUNET_TIME_absolute_get ());
+ if (NULL == (*dest))
+ {
+ (*dest) = GNUNET_malloc (GNUNET_HELLO_size (hello));
+ memcpy ((*dest), hello, GNUNET_HELLO_size (hello));
+ }
+ else
+ {
+ mrg = GNUNET_HELLO_merge ((*dest), hello);
+ delta = GNUNET_HELLO_equals (mrg, (*dest), GNUNET_TIME_absolute_get ());
if (delta.abs_value == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value)
{
/* no differences, just ignore the update */
GNUNET_free (mrg);
return;
}
- GNUNET_free (host->hello);
- host->hello = mrg;
+ GNUNET_free ((*dest));
+ (*dest) = mrg;
}
- fn = get_host_filename (peer);
- if ( (NULL != fn) &&
- (GNUNET_OK == GNUNET_DISK_directory_create_for_file (fn)) )
- {
- cnt = 0;
- (void) GNUNET_HELLO_iterate_addresses (hello, GNUNET_NO, &count_addresses,
- &cnt);
- if (0 == cnt)
- {
- /* no valid addresses, don't put HELLO on disk; in fact,
- if one exists on disk, remove it */
- (void) UNLINK (fn);
- }
- else
- {
- if (GNUNET_SYSERR ==
- GNUNET_DISK_fn_write (fn, host->hello, GNUNET_HELLO_size (host->hello),
- GNUNET_DISK_PERM_USER_READ |
- GNUNET_DISK_PERM_USER_WRITE |
- GNUNET_DISK_PERM_GROUP_READ |
- GNUNET_DISK_PERM_OTHER_READ))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "write", fn);
- }
+
+ if ((NULL != (host->hello)) && (GNUNET_NO == friend_hello_type))
+ host->friend_only_hello = update_friend_hello (host->hello, host->friend_only_hello);
+
+ fn = get_host_filename (peer);
+ if ( (NULL != fn) &&
+ (GNUNET_OK == GNUNET_DISK_directory_create_for_file (fn)) )
+ {
+#if 0
+ cnt = 0;
+ (void) GNUNET_HELLO_iterate_addresses (hello, GNUNET_NO, &count_addresses,
+ &cnt);
+ if (0 == cnt)
+ {
+ /* no valid addresses, don't put HELLO on disk; in fact,
+ if one exists on disk, remove it */
+ (void) UNLINK (fn);
+ }
+ else
+ {
+ if (GNUNET_SYSERR ==
+ GNUNET_DISK_fn_write (fn, host->hello, GNUNET_HELLO_size (host->hello),
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE |
+ GNUNET_DISK_PERM_GROUP_READ |
+ GNUNET_DISK_PERM_OTHER_READ))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "write", fn);
+ }
+ }
+#endif
+ GNUNET_free_non_null (fn);
}
- GNUNET_free_non_null (fn);
+
notify_all (host);
}
@@ -583,15 +738,25 @@ add_to_tc (void *cls, const struct GNUNET_HashCode * key, void *value)
hs = 0;
im = (struct InfoMessage *) buf;
- if ((pos->hello != NULL) &&
- ((GNUNET_NO == GNUNET_HELLO_is_friend_only (pos->hello)) ||
- ((GNUNET_YES == GNUNET_HELLO_is_friend_only (pos->hello)) && (GNUNET_YES == tc->friend_only))))
+
+ if ((pos->hello != NULL) && (GNUNET_NO == tc->friend_only))
{
+ /* Copy public HELLO */
hs = GNUNET_HELLO_size (pos->hello);
- GNUNET_assert (hs <
- GNUNET_SERVER_MAX_MESSAGE_SIZE -
+ GNUNET_assert (hs < GNUNET_SERVER_MAX_MESSAGE_SIZE -
sizeof (struct InfoMessage));
memcpy (&im[1], pos->hello, hs);
+
+ }
+
+ if ((pos->friend_only_hello != NULL) && (GNUNET_YES == tc->friend_only))
+ {
+ /* Copy friend only HELLO */
+ hs = GNUNET_HELLO_size (pos->friend_only_hello);
+ GNUNET_assert (hs < GNUNET_SERVER_MAX_MESSAGE_SIZE -
+ sizeof (struct InfoMessage));
+ memcpy (&im[1], pos->friend_only_hello, hs);
+
}
im->header.type = htons (GNUNET_MESSAGE_TYPE_PEERINFO_INFO);
im->header.size = htons (sizeof (struct InfoMessage) + hs);
@@ -603,7 +768,7 @@ add_to_tc (void *cls, const struct GNUNET_HashCode * key, void *value)
/**
- * @brief delete expired HELLO entries in data/hosts/
+ * @brief delete expired HELLO entries in directory
*
* @param cls pointer to current time (struct GNUNET_TIME_Absolute)
* @param fn filename to test to see if the HELLO expired
@@ -753,6 +918,7 @@ handle_get_all (void *cls, struct GNUNET_SERVER_Client *client,
}
+
/**
* Pass the given client the information we have in the respective
* host entry; the client is already in the notification context.
@@ -769,15 +935,21 @@ do_notify_entry (void *cls, const struct GNUNET_HashCode * key, void *value)
struct HostEntry *he = value;
struct InfoMessage *msg;
- if ((NULL != he->hello) &&
- (GNUNET_YES == GNUNET_HELLO_is_friend_only(he->hello)) &&
- (GNUNET_NO == nc->include_friend_only))
+
+ if ((NULL == he->hello) && (GNUNET_NO == nc->include_friend_only))
+ {
+ /* We have no public hello */
+ return GNUNET_YES;
+ }
+
+
+ if ((NULL == he->friend_only_hello) && GNUNET_YES == nc->include_friend_only)
{
- /* We have a friend only hello and a client not interested, continue */
+ /* We have no friend hello */
return GNUNET_YES;
}
- msg = make_info_message (he);
+ msg = make_info_message (he, nc->include_friend_only);
GNUNET_SERVER_notification_context_unicast (notify_list,
nc->client,
&msg->header,
@@ -851,6 +1023,7 @@ free_host_entry (void *cls, const struct GNUNET_HashCode * key, void *value)
struct HostEntry *he = value;
GNUNET_free_non_null (he->hello);
+ GNUNET_free_non_null (he->friend_only_hello);
GNUNET_free (he);
return GNUNET_YES;
}