/*
This file is part of GNUnet.
- (C) 2001, 2002, 2004, 2005, 2007, 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2001-2014 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
* @brief maintains list of known peers
*
* Code to maintain the list of currently known hosts (in memory
- * structure of data/hosts/ and data/credit/).
+ * structure of data/hosts/).
*
* @author Christian Grothoff
- *
- * TODO:
- * - HostEntries are never 'free'd (add expiration, upper bound?)
*/
#include "platform.h"
-#include "gnunet_crypto_lib.h"
-#include "gnunet_disk_lib.h"
+#include "gnunet_util_lib.h"
#include "gnunet_hello_lib.h"
#include "gnunet_protocols.h"
-#include "gnunet_service_lib.h"
#include "gnunet_statistics_service.h"
#include "peerinfo.h"
*/
#define DATA_HOST_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 15)
-/**
- * How often do we flush trust values to disk?
- */
-#define TRUST_FLUSH_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5)
-
/**
* How often do we discard old entries in data/hosts/?
*/
#define DATA_HOST_CLEAN_FREQ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 60)
+
/**
* In-memory cache of known hosts.
*/
{
/**
- * This is a linked list.
+ * Identity of the peer.
*/
- struct HostEntry *next;
+ struct GNUNET_PeerIdentity identity;
/**
- * Identity of the peer.
+ * Hello for the peer (can be NULL)
*/
- struct GNUNET_PeerIdentity identity;
+ struct GNUNET_HELLO_Message *hello;
+
+ /**
+ * Friend only hello for the peer (can be NULL)
+ */
+ struct GNUNET_HELLO_Message *friend_only_hello;
+
+};
+
+/**
+ * Transmit context for GET requests
+ */
+struct TransmitContext
+{
+ /**
+ * Server transmit context
+ */
+ struct GNUNET_SERVER_TransmitContext *tc;
+ /**
+ * Include friend only HELLOs #GNUNET_YES or #GNUNET_NO
+ */
+ int friend_only;
+};
+
+
+/**
+ * Result of reading a file
+ */
+struct ReadHostFileContext
+{
/**
* Hello for the peer (can be NULL)
*/
struct GNUNET_HELLO_Message *hello;
/**
- * Trust rating for this peer
+ * Friend only hello for the peer (can be NULL)
*/
- uint32_t trust;
+ struct GNUNET_HELLO_Message *friend_only_hello;
+};
+
+
+/**
+ * Client notification context
+ */
+struct NotificationContext
+{
+ /**
+ * Next in DLL
+ */
+ struct NotificationContext *prev;
/**
- * Trust rating for this peer on disk.
+ * Previous in DLL
*/
- uint32_t disk_trust;
+ struct NotificationContext *next;
+ /**
+ * Server client
+ */
+ struct GNUNET_SERVER_Client *client;
+
+ /**
+ * Interested in friend only HELLO?
+ */
+ int include_friend_only;
};
/**
- * The in-memory list of known hosts.
+ * The in-memory list of known hosts, mapping of
+ * host IDs to 'struct HostEntry*' values.
*/
-static struct HostEntry *hosts;
+static struct GNUNET_CONTAINER_MultiPeerMap *hostmap;
/**
* Clients to immediately notify about all changes.
static struct GNUNET_SERVER_NotificationContext *notify_list;
/**
- * Directory where the hellos are stored in (data/hosts)
+ * Directory where the hellos are stored in (peerinfo/)
*/
static char *networkIdDirectory;
/**
- * Where do we store trust information?
+ * Handle for reporting statistics.
*/
-static char *trustDirectory;
+static struct GNUNET_STATISTICS_Handle *stats;
/**
- * Handle for reporting statistics.
+ * DLL of notification contexts: head
*/
-static struct GNUNET_STATISTICS_Handle *stats;
+static struct NotificationContext *nc_head;
+
+/**
+ * DLL of notification contexts: tail
+ */
+static struct NotificationContext *nc_tail;
/**
* Notify all clients in the notify list about the
* given host entry changing.
+ *
+ * @param he entry of the host for which we generate a notification
+ * @param include_friend_only create public of friend-only message
+ * @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 = (he->hello == NULL) ? 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->trust = htonl (he->trust);
im->peer = he->identity;
- if (he->hello != NULL)
- memcpy (&im[1], he->hello, hs);
+ if (NULL != src)
+ memcpy (&im[1], src, hs);
return im;
}
* Address iterator that causes expired entries to be discarded.
*
* @param cls pointer to the current time
- * @param tname name of the transport
+ * @param address the address
* @param expiration expiration time for the address
- * @param addr the address
- * @param addrlen length of addr in bytes
- * @return GNUNET_NO if expiration smaller than the current time
+ * @return #GNUNET_NO if expiration smaller than the current time
*/
static int
discard_expired (void *cls,
- const char *tname,
- struct GNUNET_TIME_Absolute expiration,
- const void *addr, size_t addrlen)
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_TIME_Absolute expiration)
{
const struct GNUNET_TIME_Absolute *now = cls;
- if (now->value > expiration.value)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Removing expired address of transport `%s'\n"),
- tname);
- return GNUNET_NO;
- }
+
+ if (now->abs_value_us > expiration.abs_value_us)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Removing expired address of transport `%s'\n"),
+ address->transport_name);
+ return GNUNET_NO;
+ }
return GNUNET_OK;
}
/**
- * Get the filename under which we would store the GNUNET_HELLO_Message
- * for the given host and protocol.
- * @return filename of the form DIRECTORY/HOSTID
+ * Address iterator that counts the remaining addresses.
+ *
+ * @param cls pointer to the counter
+ * @param address the address
+ * @param expiration expiration time for the address
+ * @return #GNUNET_OK (always)
*/
-static char *
-get_host_filename (const struct GNUNET_PeerIdentity *id)
+static int
+count_addresses (void *cls,
+ const struct GNUNET_HELLO_Address *address,
+ struct GNUNET_TIME_Absolute expiration)
{
- struct GNUNET_CRYPTO_HashAsciiEncoded fil;
- char *fn;
+ unsigned int *cnt = cls;
- GNUNET_CRYPTO_hash_to_enc (&id->hashPubKey, &fil);
- GNUNET_asprintf (&fn,
- "%s%s%s", networkIdDirectory, DIR_SEPARATOR_STR, &fil);
- return fn;
+ (*cnt)++;
+ return GNUNET_OK;
}
/**
* Get the filename under which we would store the GNUNET_HELLO_Message
* for the given host and protocol.
+ *
+ * @param id peer for which we need the filename for the HELLO
* @return filename of the form DIRECTORY/HOSTID
*/
static char *
-get_trust_filename (const struct GNUNET_PeerIdentity *id)
+get_host_filename (const struct GNUNET_PeerIdentity *id)
{
- struct GNUNET_CRYPTO_HashAsciiEncoded fil;
char *fn;
- GNUNET_CRYPTO_hash_to_enc (&id->hashPubKey, &fil);
- GNUNET_asprintf (&fn, "%s%s%s", trustDirectory, DIR_SEPARATOR_STR, &fil);
+ if (NULL == networkIdDirectory)
+ return NULL;
+ GNUNET_asprintf (&fn, "%s%s%s", networkIdDirectory, DIR_SEPARATOR_STR,
+ GNUNET_i2s_full (id));
return fn;
}
/**
- * Find the host entry for the given peer. Call
- * only when synchronized!
- * @return NULL if not found
+ * Broadcast information about the given entry to all
+ * clients that care.
+ *
+ * @param entry entry to broadcast about
*/
-static struct HostEntry *
-lookup_host_entry (const struct GNUNET_PeerIdentity *id)
+static void
+notify_all (struct HostEntry *entry)
{
- struct HostEntry *pos;
-
- pos = hosts;
- while ((pos != NULL) &&
- (0 !=
- memcmp (id, &pos->identity, sizeof (struct GNUNET_PeerIdentity))))
- pos = pos->next;
- return pos;
+ struct InfoMessage *msg_pub;
+ struct InfoMessage *msg_friend;
+ struct NotificationContext *cur;
+
+ msg_pub = make_info_message (entry, GNUNET_NO);
+ msg_friend = make_info_message (entry, GNUNET_YES);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Notifying all clients about peer `%s'\n",
+ GNUNET_i2s(&entry->identity));
+ for (cur = nc_head; NULL != cur; cur = cur->next)
+ {
+ 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_pub);
+ GNUNET_free (msg_friend);
}
/**
- * Broadcast information about the given entry to all
- * clients that care.
+ * Bind a host address (hello) to a hostId.
*
- * @param entry entry to broadcast about
+ * @param peer the peer for which this is a hello
+ * @param hello the verified (!) hello message
*/
static void
-notify_all (struct HostEntry *entry)
-{
- struct InfoMessage *msg;
-
- msg = make_info_message (entry);
- GNUNET_SERVER_notification_context_broadcast (notify_list,
- &msg->header,
- GNUNET_NO);
- GNUNET_free (msg);
-}
+update_hello (const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_HELLO_Message *hello);
/**
- * Add a host to the list.
+ * Try to read the HELLOs in the given filename and discard expired
+ * addresses. Removes the file if one the HELLO is malformed. 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).
+ * The file can contain multiple HELLO messages.
*
- * @param identity the identity of the host
+ * @param fn name of the file
+ * @param unlink_garbage if #GNUNET_YES, try to remove useless files
+ * @param r ReadHostFileContext to store the resutl
*/
static void
-add_host_to_known_hosts (const struct GNUNET_PeerIdentity *identity)
+read_host_file (const char *fn,
+ int unlink_garbage,
+ struct ReadHostFileContext *r)
{
- struct HostEntry *entry;
- char *fn;
- uint32_t trust;
- char buffer[GNUNET_SERVER_MAX_MESSAGE_SIZE];
+ char buffer[GNUNET_SERVER_MAX_MESSAGE_SIZE - 1] GNUNET_ALIGN;
+ unsigned int size_total;
+ struct GNUNET_TIME_Absolute now;
+ unsigned int left;
const struct GNUNET_HELLO_Message *hello;
struct GNUNET_HELLO_Message *hello_clean;
- int size;
- struct GNUNET_TIME_Absolute now;
+ unsigned read_pos;
+ int size_hello;
- entry = lookup_host_entry (identity);
- if (entry != NULL)
+ r->friend_only_hello = NULL;
+ r->hello = NULL;
+
+ if (GNUNET_YES != GNUNET_DISK_file_test (fn))
+ return;
+ size_total = GNUNET_DISK_fn_read (fn, buffer, sizeof (buffer));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Read %u bytes from `%s'\n",
+ size_total,
+ fn);
+ if (size_total < sizeof (struct GNUNET_MessageHeader))
+ {
+ 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)) &&
+ (ENOENT != errno) )
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
+ "unlink",
+ fn);
return;
- GNUNET_STATISTICS_update (stats,
- gettext_noop ("# peers known"),
- 1,
- GNUNET_NO);
- entry = GNUNET_malloc (sizeof (struct HostEntry));
- entry->identity = *identity;
- fn = get_trust_filename (identity);
- if ((GNUNET_DISK_file_test (fn) == GNUNET_YES) &&
- (sizeof (trust) == GNUNET_DISK_fn_read (fn, &trust, sizeof (trust))))
- entry->disk_trust = entry->trust = ntohl (trust);
- GNUNET_free (fn);
-
- fn = get_host_filename (identity);
- if (GNUNET_DISK_file_test (fn) == GNUNET_YES)
+ }
+
+ read_pos = 0;
+ while (read_pos < size_total)
+ {
+ hello = (const struct GNUNET_HELLO_Message *) &buffer[read_pos];
+ size_hello = GNUNET_HELLO_size (hello);
+ if (0 == size_hello)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s'\n"),
+ fn);
+ if ((GNUNET_YES == unlink_garbage) &&
+ (0 != UNLINK (fn)) &&
+ (ENOENT != errno) )
+ 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);
+ if (NULL == hello_clean)
{
- 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)) )
- {
- GNUNET_break (0);
- if (0 != UNLINK (fn))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
- "unlink",
- fn);
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to parse HELLO in file `%s'\n"),
+ fn);
+ if ((GNUNET_YES == unlink_garbage) &&
+ (0 != UNLINK (fn)) &&
+ (ENOENT != errno) )
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING,
+ "unlink",
+ fn);
+ return;
+ }
+ left = 0;
+ (void) GNUNET_HELLO_iterate_addresses (hello_clean, GNUNET_NO,
+ &count_addresses, &left);
+
+ if (0 == left)
+ {
+ GNUNET_free (hello_clean);
+ break;
+ }
+
+ if (GNUNET_NO == GNUNET_HELLO_is_friend_only (hello_clean))
+ {
+ if (NULL == r->hello)
+ r->hello = hello_clean;
else
- {
- now = GNUNET_TIME_absolute_get ();
- hello_clean = GNUNET_HELLO_iterate_addresses (hello,
- GNUNET_YES,
- &discard_expired, &now);
- entry->hello = hello_clean;
- }
+ {
+ GNUNET_break (0);
+ GNUNET_free (r->hello);
+ r->hello = hello_clean;
+ }
}
- GNUNET_free (fn);
- entry->next = hosts;
- hosts = entry;
- notify_all (entry);
+ else
+ {
+ if (NULL == r->friend_only_hello)
+ r->friend_only_hello = hello_clean;
+ else
+ {
+ GNUNET_break (0);
+ GNUNET_free (r->friend_only_hello);
+ r->friend_only_hello = hello_clean;
+ }
+ }
+ read_pos += size_hello;
+ }
+
+ 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);
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Found `%s' and `%s' HELLO message in file\n",
+ (NULL != r->hello) ? "public" : "NON-public",
+ (NULL != r->friend_only_hello) ? "friend only" : "NO friend only");
}
/**
- * Increase the host credit by a value.
+ * Add a host to the list and notify clients about this event
*
- * @param hostId is the identity of the host
- * @param value is the int value by which the
- * host credit is to be increased or decreased
- * @returns the actual change in trust (positive or negative)
+ * @param identity the identity of the host
+ * @return the HostEntry
*/
-static int
-change_host_trust (const struct GNUNET_PeerIdentity *hostId, int value)
+static struct HostEntry *
+add_host_to_known_hosts (const struct GNUNET_PeerIdentity *identity)
{
- struct HostEntry *host;
- unsigned int old_trust;
+ struct HostEntry *entry;
+ struct ReadHostFileContext r;
+ char *fn;
- if (value == 0)
- return 0;
- host = lookup_host_entry (hostId);
- if (host == NULL)
+ entry = GNUNET_CONTAINER_multipeermap_get (hostmap, identity);
+ if (NULL == entry)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding new peer `%s'\n", GNUNET_i2s (identity));
+ GNUNET_STATISTICS_update (stats, gettext_noop ("# peers known"), 1,
+ GNUNET_NO);
+ entry = GNUNET_new (struct HostEntry);
+ entry->identity = *identity;
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_put (hostmap, &entry->identity, entry,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ notify_all (entry);
+ fn = get_host_filename (identity);
+ if (NULL != fn)
{
- add_host_to_known_hosts (hostId);
- host = lookup_host_entry (hostId);
+ read_host_file (fn, GNUNET_YES, &r);
+ if (NULL != r.hello)
+ update_hello (identity, r.hello);
+ if (NULL != r.friend_only_hello)
+ update_hello (identity, r.friend_only_hello);
+ GNUNET_free_non_null (r.hello);
+ GNUNET_free_non_null (r.friend_only_hello);
+ GNUNET_free (fn);
}
- GNUNET_assert (host != NULL);
- old_trust = host->trust;
- if (value > 0)
- {
- if (host->trust + value < host->trust)
- {
- value = ((uint32_t) - 1) - host->trust;
- host->trust = (uint32_t) - 1; /* maximized */
- }
- else
- host->trust += value;
- }
- else
- {
- if (host->trust < -value)
- {
- value = -host->trust;
- host->trust = 0;
- }
- else
- host->trust += value;
- }
- if (host->trust != old_trust)
- notify_all (host);
- return value;
+ }
+ return entry;
}
/**
* Remove a file that should not be there. LOG
* success or failure.
+ *
+ * @param fullname name of the file to remove
*/
static void
remove_garbage (const char *fullname)
("File `%s' in directory `%s' does not match naming convention. "
"Removed.\n"), fullname, networkIdDirectory);
else
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR |
- GNUNET_ERROR_TYPE_BULK, "unlink", fullname);
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
+ "unlink", fullname);
}
+/**
+ * Closure for 'hosts_directory_scan_callback'.
+ */
+struct DirScanContext
+{
+ /**
+ * #GNUNET_YES if we should remove files that are broken,
+ * #GNUNET_NO if the directory we are iterating over should
+ * be treated as read-only by us.
+ */
+ int remove_files;
+
+ /**
+ * Counter for the number of (valid) entries found, incremented
+ * by one for each match.
+ */
+ unsigned int matched;
+};
+
+
+/**
+ * Function that is called on each HELLO file in a particular directory.
+ * Try to parse the file and add the HELLO to our list.
+ *
+ * @param cls pointer to 'unsigned int' to increment for each file, or NULL
+ * if the file is from a read-only, read-once resource directory
+ * @param fullname name of the file to parse
+ * @return #GNUNET_OK (continue iteration)
+ */
static int
hosts_directory_scan_callback (void *cls, const char *fullname)
{
- unsigned int *matched = cls;
+ struct DirScanContext *dsc = cls;
struct GNUNET_PeerIdentity identity;
+ struct ReadHostFileContext r;
const char *filename;
+ struct GNUNET_PeerIdentity id_public;
+ struct GNUNET_PeerIdentity id_friend;
+ struct GNUNET_PeerIdentity id;
- if (GNUNET_DISK_file_test (fullname) != GNUNET_YES)
+ if (GNUNET_YES != GNUNET_DISK_file_test (fullname))
return GNUNET_OK; /* ignore non-files */
- if (strlen (fullname) < sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded))
- {
- remove_garbage (fullname);
- return GNUNET_OK;
- }
- filename =
- &fullname[strlen (fullname) -
- sizeof (struct GNUNET_CRYPTO_HashAsciiEncoded) + 1];
- if (filename[-1] != DIR_SEPARATOR)
- {
+
+ filename = strrchr (fullname, DIR_SEPARATOR);
+ if ((NULL == filename) || (1 > strlen (filename)))
+ filename = fullname;
+ else
+ filename ++;
+
+ read_host_file (fullname, dsc->remove_files, &r);
+ if ( (NULL == r.hello) && (NULL == r.friend_only_hello))
+ return GNUNET_OK;
+ if (NULL != r.friend_only_hello)
+ {
+ if (GNUNET_OK != GNUNET_HELLO_get_id (r.friend_only_hello, &id_friend))
+ if (GNUNET_YES == dsc->remove_files)
+ {
+ remove_garbage (fullname);
+ return GNUNET_OK;
+ }
+ id = id_friend;
+ }
+ if (NULL != r.hello)
+ {
+ if (GNUNET_OK != GNUNET_HELLO_get_id (r.hello, &id_public))
+ if (GNUNET_YES == dsc->remove_files)
+ {
+ remove_garbage (fullname);
+ return GNUNET_OK;
+ }
+ id = id_public;
+ }
+
+ 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;
- }
- if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string (filename,
- &identity.hashPubKey))
+ return GNUNET_OK;
+ }
+ if (GNUNET_OK == GNUNET_CRYPTO_eddsa_public_key_from_string (filename,
+ strlen (filename),
+ &identity.public_key))
+ {
+ if (0 != memcmp (&id, &identity, sizeof (id_friend)))
{
- remove_garbage (fullname);
+ /* HELLOs are not for the same peer */
+ GNUNET_break (0);
+ if (GNUNET_YES == dsc->remove_files)
+ remove_garbage (fullname);
return GNUNET_OK;
}
- (*matched)++;
- add_host_to_known_hosts (&identity);
+ }
+
+ /* ok, found something valid, remember HELLO */
+ add_host_to_known_hosts (&id);
+ if (NULL != r.hello)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating peer `%s' public HELLO \n",
+ GNUNET_i2s (&id));
+ update_hello (&id, r.hello);
+ GNUNET_free (r.hello);
+ }
+ if (NULL != r.friend_only_hello)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating peer `%s' friend only HELLO \n",
+ GNUNET_i2s (&id));
+ update_hello (&id, r.friend_only_hello);
+ GNUNET_free (r.friend_only_hello);
+ }
+ dsc->matched++;
return GNUNET_OK;
}
/**
* Call this method periodically to scan data/hosts for new hosts.
+ *
+ * @param cls unused
+ * @param tc scheduler context, aborted if reason is shutdown
*/
static void
cron_scan_directory_data_hosts (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
static unsigned int retries;
- unsigned int count;
+ struct DirScanContext dsc;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
- count = 0;
- GNUNET_DISK_directory_create (networkIdDirectory);
+ if (GNUNET_SYSERR == GNUNET_DISK_directory_create (networkIdDirectory))
+ {
+ GNUNET_SCHEDULER_add_delayed_with_priority (DATA_HOST_FREQ,
+ GNUNET_SCHEDULER_PRIORITY_IDLE,
+ &cron_scan_directory_data_hosts, NULL);
+ return;
+ }
+ dsc.matched = 0;
+ dsc.remove_files = GNUNET_YES;
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
+ _("Scanning directory `%s'\n"), networkIdDirectory);
GNUNET_DISK_directory_scan (networkIdDirectory,
- &hosts_directory_scan_callback, &count);
- if ((0 == count) && (0 == (++retries & 31)))
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING |
- GNUNET_ERROR_TYPE_BULK,
+ &hosts_directory_scan_callback, &dsc);
+ if ((0 == dsc.matched) && (0 == (++retries & 31)))
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK,
_("Still no peers found in `%s'!\n"), networkIdDirectory);
- GNUNET_SCHEDULER_add_delayed (tc->sched,
- DATA_HOST_FREQ,
- &cron_scan_directory_data_hosts, NULL);
+ GNUNET_SCHEDULER_add_delayed_with_priority (DATA_HOST_FREQ,
+ GNUNET_SCHEDULER_PRIORITY_IDLE,
+ &cron_scan_directory_data_hosts,
+ NULL);
+}
+
+
+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_HELLO_Message * tmp;
+ struct GNUNET_CRYPTO_EddsaPublicKey pk;
+
+ if (NULL != friend_hello)
+ {
+ res = GNUNET_HELLO_merge (hello, friend_hello);
+ GNUNET_assert (GNUNET_YES == GNUNET_HELLO_is_friend_only (res));
+ return res;
+ }
+
+ if (GNUNET_OK !=
+ GNUNET_HELLO_get_key (hello, &pk))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
+ tmp = GNUNET_HELLO_create (&pk, NULL, NULL, GNUNET_YES);
+ res = GNUNET_HELLO_merge (hello, tmp);
+ GNUNET_free (tmp);
+ GNUNET_assert (GNUNET_YES == GNUNET_HELLO_is_friend_only (res));
+ return res;
}
* @param hello the verified (!) hello message
*/
static void
-bind_address (const struct GNUNET_PeerIdentity *peer,
+update_hello (const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_HELLO_Message *hello)
{
char *fn;
struct HostEntry *host;
struct GNUNET_HELLO_Message *mrg;
+ struct GNUNET_HELLO_Message **dest;
struct GNUNET_TIME_Absolute delta;
-
- add_host_to_known_hosts (peer);
- host = lookup_host_entry (peer);
- GNUNET_assert (host != NULL);
- if (host->hello == NULL)
- {
- host->hello = GNUNET_malloc (GNUNET_HELLO_size (hello));
- memcpy (host->hello, hello, GNUNET_HELLO_size (hello));
- }
+ unsigned int cnt;
+ unsigned int size;
+ int friend_hello_type;
+ int store_hello;
+ int store_friend_hello;
+ int pos;
+ char *buffer;
+
+ host = GNUNET_CONTAINER_multipeermap_get (hostmap, peer);
+ GNUNET_assert (NULL != host);
+
+ friend_hello_type = GNUNET_HELLO_is_friend_only (hello);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating %s HELLO for `%s'\n",
+ (GNUNET_YES == friend_hello_type) ? "friend-only" : "public",
+ GNUNET_i2s (peer));
+
+ dest = NULL;
+ if (GNUNET_YES == friend_hello_type)
+ {
+ dest = &host->friend_only_hello;
+ }
else
+ {
+ dest = &host->hello;
+ }
+
+ 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_us == GNUNET_TIME_UNIT_FOREVER_ABS.abs_value_us)
{
- mrg = GNUNET_HELLO_merge (host->hello, hello);
- delta = GNUNET_HELLO_equals (mrg,
- host->hello,
- GNUNET_TIME_absolute_get ());
- if (delta.value == GNUNET_TIME_UNIT_FOREVER_ABS.value)
- {
- GNUNET_free (mrg);
- return;
- }
- GNUNET_free (host->hello);
- host->hello = mrg;
+ /* no differences, just ignore the update */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No change in %s HELLO for `%s'\n",
+ (GNUNET_YES == friend_hello_type) ? "friend-only" : "public",
+ GNUNET_i2s (peer));
+ GNUNET_free (mrg);
+ return;
}
- fn = get_host_filename (peer);
- GNUNET_DISK_directory_create_for_file (fn);
- 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_free (fn);
- notify_all (host);
-}
-
+ GNUNET_free ((*dest));
+ (*dest) = mrg;
+ }
+
+ if ((NULL != (host->hello)) && (GNUNET_NO == friend_hello_type))
+ {
+ /* Update friend only hello */
+ mrg = update_friend_hello (host->hello, host->friend_only_hello);
+ if (NULL != host->friend_only_hello)
+ GNUNET_free (host->friend_only_hello);
+ host->friend_only_hello = mrg;
+ }
+
+ if (NULL != host->hello)
+ GNUNET_assert ((GNUNET_NO == GNUNET_HELLO_is_friend_only (host->hello)));
+ if (NULL != host->friend_only_hello)
+ GNUNET_assert ((GNUNET_YES == GNUNET_HELLO_is_friend_only(host->friend_only_hello)));
-/**
- * Do transmit info either for only the host matching the given
- * argument or for all known hosts and change their trust values by
- * the given delta.
- *
- * @param only NULL to hit all hosts, otherwise specifies a particular target
- * @param trust_change how much should the trust be changed
- * @param client who is making the request (and will thus receive our confirmation)
- */
-static void
-send_to_each_host (const struct GNUNET_PeerIdentity *only,
- int trust_change, struct GNUNET_SERVER_Client *client)
-{
- struct HostEntry *pos;
- struct InfoMessage *im;
- uint16_t hs;
- char buf[GNUNET_SERVER_MAX_MESSAGE_SIZE];
- struct GNUNET_SERVER_TransmitContext *tc;
-
- tc = GNUNET_SERVER_transmit_context_create (client);
- pos = hosts;
- while (pos != NULL)
+ fn = get_host_filename (peer);
+ if ( (NULL != fn) &&
+ (GNUNET_OK == GNUNET_DISK_directory_create_for_file (fn)) )
+ {
+ store_hello = GNUNET_NO;
+ size = 0;
+ cnt = 0;
+ if (NULL != host->hello)
+ (void) GNUNET_HELLO_iterate_addresses (host->hello,
+ GNUNET_NO, &count_addresses, &cnt);
+ if (cnt > 0)
{
- if ((only == NULL) ||
- (0 ==
- memcmp (only, &pos->identity,
- sizeof (struct GNUNET_PeerIdentity))))
- {
- change_host_trust (&pos->identity, trust_change);
- hs = 0;
- im = (struct InfoMessage *) buf;
- if (pos->hello != NULL)
- {
- hs = GNUNET_HELLO_size (pos->hello);
- GNUNET_assert (hs <
- GNUNET_SERVER_MAX_MESSAGE_SIZE -
- sizeof (struct InfoMessage));
- memcpy (&im[1], pos->hello, hs);
- }
- im->header.type = htons (GNUNET_MESSAGE_TYPE_PEERINFO_INFO);
- im->header.size = htons (sizeof (struct InfoMessage) + hs);
- im->trust = htonl (pos->trust);
- im->peer = pos->identity;
- GNUNET_SERVER_transmit_context_append_message (tc,
- &im->header);
- }
- pos = pos->next;
+ store_hello = GNUNET_YES;
+ size += GNUNET_HELLO_size (host->hello);
+ }
+ cnt = 0;
+ if (NULL != host->friend_only_hello)
+ (void) GNUNET_HELLO_iterate_addresses (host->friend_only_hello, GNUNET_NO,
+ &count_addresses, &cnt);
+ store_friend_hello = GNUNET_NO;
+ if (0 < cnt)
+ {
+ store_friend_hello = GNUNET_YES;
+ size += GNUNET_HELLO_size (host->friend_only_hello);
}
- GNUNET_SERVER_transmit_context_append_data (tc, NULL, 0,
- GNUNET_MESSAGE_TYPE_PEERINFO_INFO_END);
- GNUNET_SERVER_transmit_context_run (tc, GNUNET_TIME_UNIT_FOREVER_REL);
-}
-
-
-/**
- * Write host-trust information to a file - flush the buffer entry!
- * Assumes synchronized access.
- */
-static void
-flush_trust (struct HostEntry *host)
-{
- char *fn;
- uint32_t trust;
- if (host->trust == host->disk_trust)
- return; /* unchanged */
- fn = get_trust_filename (&host->identity);
- if (host->trust == 0)
+ if ((GNUNET_NO == store_hello) && (GNUNET_NO == store_friend_hello))
{
- if ((0 != UNLINK (fn)) && (errno != ENOENT))
- GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING |
- GNUNET_ERROR_TYPE_BULK, "unlink", fn);
+ /* no valid addresses, don't put HELLO on disk; in fact,
+ if one exists on disk, remove it */
+ (void) UNLINK (fn);
}
- else
+ else
{
- trust = htonl (host->trust);
- if (sizeof(uint32_t) == GNUNET_DISK_fn_write (fn, &trust,
- sizeof(uint32_t),
- GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE
- | GNUNET_DISK_PERM_GROUP_READ | GNUNET_DISK_PERM_OTHER_READ))
- host->disk_trust = host->trust;
+ buffer = GNUNET_malloc (size);
+ pos = 0;
+
+ if (GNUNET_YES == store_hello)
+ {
+ memcpy (buffer, host->hello, GNUNET_HELLO_size (host->hello));
+ pos += GNUNET_HELLO_size (host->hello);
+ }
+ if (GNUNET_YES == store_friend_hello)
+ {
+ memcpy (&buffer[pos], host->friend_only_hello, GNUNET_HELLO_size (host->friend_only_hello));
+ pos += GNUNET_HELLO_size (host->friend_only_hello);
+ }
+ GNUNET_assert (pos == size);
+
+ if (GNUNET_SYSERR == GNUNET_DISK_fn_write (fn, buffer, size,
+ 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);
+ else
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stored %s %s HELLO in %s with total size %u\n",
+ (GNUNET_YES == store_friend_hello) ? "friend-only": "",
+ (GNUNET_YES == store_hello) ? "public": "",
+ fn, size);
+ GNUNET_free (buffer);
}
- GNUNET_free (fn);
+ }
+ GNUNET_free_non_null (fn);
+ notify_all (host);
}
+
/**
- * Call this method periodically to scan data/hosts for new hosts.
+ * Do transmit info about peer to given host.
+ *
+ * @param cls NULL to hit all hosts, otherwise specifies a particular target
+ * @param key hostID
+ * @param value information to transmit
+ * @return #GNUNET_YES (continue to iterate)
*/
-static void
-cron_flush_trust (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+static int
+add_to_tc (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
{
- struct HostEntry *pos;
+ struct TransmitContext *tc = cls;
+ struct HostEntry *pos = value;
+ struct InfoMessage *im;
+ uint16_t hs;
+ char buf[GNUNET_SERVER_MAX_MESSAGE_SIZE - 1] GNUNET_ALIGN;
+
+ hs = 0;
+ im = (struct InfoMessage *) buf;
+
+ 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 -
+ sizeof (struct InfoMessage));
+ memcpy (&im[1], pos->hello, hs);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending public HELLO with size %u for peer `%4s'\n",
+ hs, GNUNET_i2s (key));
+ }
+ else 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);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Sending friend-only HELLO with size %u for peer `%4s'\n",
+ hs, GNUNET_i2s (key));
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding no HELLO for peer `%s'\n",
+ GNUNET_i2s (key));
+ }
- pos = hosts;
- while (pos != NULL)
- {
- flush_trust (pos);
- pos = pos->next;
- }
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
- GNUNET_SCHEDULER_add_delayed (tc->sched,
- TRUST_FLUSH_FREQ, &cron_flush_trust, NULL);
+ im->header.type = htons (GNUNET_MESSAGE_TYPE_PEERINFO_INFO);
+ im->header.size = htons (sizeof (struct InfoMessage) + hs);
+ im->reserved = htonl (0);
+ im->peer = pos->identity;
+ GNUNET_SERVER_transmit_context_append_message (tc->tc, &im->header);
+ return GNUNET_YES;
}
/**
- * @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
+ * @return #GNUNET_OK (continue iteration)
*/
static int
discard_hosts_helper (void *cls, const char *fn)
{
struct GNUNET_TIME_Absolute *now = cls;
- char buffer[GNUNET_SERVER_MAX_MESSAGE_SIZE];
+ char buffer[GNUNET_SERVER_MAX_MESSAGE_SIZE - 1] GNUNET_ALIGN;
const struct GNUNET_HELLO_Message *hello;
struct GNUNET_HELLO_Message *new_hello;
- int size;
-
- size = GNUNET_DISK_fn_read (fn, buffer, sizeof (buffer));
- if ((size < sizeof (struct GNUNET_MessageHeader)) && (0 != UNLINK (fn)))
- {
+ int read_size;
+ unsigned int cur_hello_size;
+ unsigned int new_hello_size;
+ int read_pos;
+ int write_pos;
+ unsigned int cnt;
+ char *writebuffer;
+
+
+ read_size = GNUNET_DISK_fn_read (fn, buffer, sizeof (buffer));
+ if (read_size < sizeof (struct GNUNET_MessageHeader))
+ {
+ if (0 != UNLINK (fn))
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING |
GNUNET_ERROR_TYPE_BULK, "unlink", fn);
- return GNUNET_OK;
- }
- hello = (const struct GNUNET_HELLO_Message *) buffer;
- new_hello = GNUNET_HELLO_iterate_addresses (hello,
- GNUNET_YES,
- &discard_expired, now);
- if (new_hello != NULL)
- {
- GNUNET_DISK_fn_write (fn,
- new_hello,
- GNUNET_HELLO_size (new_hello),
- GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE
- | GNUNET_DISK_PERM_GROUP_READ | GNUNET_DISK_PERM_OTHER_READ);
- GNUNET_free (new_hello);
- }
- else
+ return GNUNET_OK;
+ }
+
+ writebuffer = GNUNET_malloc (read_size);
+ read_pos = 0;
+ write_pos = 0;
+ while (read_pos < read_size)
+ {
+ /* Check each HELLO */
+ hello = (const struct GNUNET_HELLO_Message *) &buffer[read_pos];
+ cur_hello_size = GNUNET_HELLO_size (hello);
+ if (0 == cur_hello_size)
{
+ /* Invalid data, discard */
if (0 != UNLINK (fn))
GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING |
- GNUNET_ERROR_TYPE_BULK, "unlink", fn);
+ GNUNET_ERROR_TYPE_BULK, "unlink", fn);
+ return GNUNET_OK;
+ }
+ new_hello = GNUNET_HELLO_iterate_addresses (hello, GNUNET_YES, &discard_expired, now);
+ cnt = 0;
+ if (NULL != new_hello)
+ (void) GNUNET_HELLO_iterate_addresses (hello, GNUNET_NO, &count_addresses, &cnt);
+ if ( (NULL != new_hello) && (0 < cnt) )
+ {
+ /* Store new HELLO to write it when done */
+ new_hello_size = GNUNET_HELLO_size (new_hello);
+ memcpy (&writebuffer[write_pos], new_hello, new_hello_size);
+ write_pos += new_hello_size;
}
+ read_pos += cur_hello_size;
+ GNUNET_free_non_null (new_hello);
+ }
+
+ if (0 < write_pos)
+ {
+ GNUNET_DISK_fn_write (fn, writebuffer,write_pos,
+ GNUNET_DISK_PERM_USER_READ |
+ GNUNET_DISK_PERM_USER_WRITE |
+ GNUNET_DISK_PERM_GROUP_READ |
+ GNUNET_DISK_PERM_OTHER_READ);
+ }
+ else if (0 != UNLINK (fn))
+ GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING |
+ GNUNET_ERROR_TYPE_BULK, "unlink", fn);
+
+ GNUNET_free (writebuffer);
return GNUNET_OK;
}
/**
- * Call this method periodically to scan data/hosts for new hosts.
+ * Call this method periodically to scan peerinfo/ for ancient
+ * HELLOs to expire.
+ *
+ * @param cls unused
+ * @param tc scheduler context, aborted if reason is shutdown
*/
static void
-cron_clean_data_hosts (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+cron_clean_data_hosts (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_TIME_Absolute now;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
now = GNUNET_TIME_absolute_get ();
- GNUNET_DISK_directory_scan (networkIdDirectory,
- &discard_hosts_helper, &now);
-
- GNUNET_SCHEDULER_add_delayed (tc->sched,
- DATA_HOST_CLEAN_FREQ,
- &cron_clean_data_hosts, NULL);
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO | GNUNET_ERROR_TYPE_BULK,
+ _("Cleaning up directory `%s'\n"), networkIdDirectory);
+ GNUNET_DISK_directory_scan (networkIdDirectory, &discard_hosts_helper, &now);
+ GNUNET_SCHEDULER_add_delayed (DATA_HOST_CLEAN_FREQ, &cron_clean_data_hosts,
+ NULL);
}
* @param message the actual message
*/
static void
-handle_hello (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_hello (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
{
const struct GNUNET_HELLO_Message *hello;
struct GNUNET_PeerIdentity pid;
hello = (const struct GNUNET_HELLO_Message *) message;
- if (GNUNET_OK != GNUNET_HELLO_get_id (hello, &pid))
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- bind_address (&pid, hello);
+ if (GNUNET_OK != GNUNET_HELLO_get_id (hello, &pid))
+ {
+ GNUNET_break (0);
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ return;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' message received for peer `%4s'\n",
+ "HELLO", GNUNET_i2s (&pid));
+ add_host_to_known_hosts (&pid);
+ update_hello (&pid, hello);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
* @param message the actual message
*/
static void
-handle_get (void *cls,
- struct GNUNET_SERVER_Client *client,
+handle_get (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
const struct ListPeerMessage *lpm;
+ struct TransmitContext tcx;
lpm = (const struct ListPeerMessage *) message;
- send_to_each_host (&lpm->peer, ntohl (lpm->trust_change), client);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' message received for peer `%4s'\n",
+ "GET", GNUNET_i2s (&lpm->peer));
+ tcx.friend_only = ntohl (lpm->include_friend_only);
+ tcx.tc = GNUNET_SERVER_transmit_context_create (client);
+ GNUNET_CONTAINER_multipeermap_get_multiple (hostmap, &lpm->peer,
+ &add_to_tc, &tcx);
+ GNUNET_SERVER_transmit_context_append_data (tcx.tc, NULL, 0,
+ GNUNET_MESSAGE_TYPE_PEERINFO_INFO_END);
+ GNUNET_SERVER_transmit_context_run (tcx.tc, GNUNET_TIME_UNIT_FOREVER_REL);
}
* @param message the actual message
*/
static void
-handle_get_all (void *cls,
- struct GNUNET_SERVER_Client *client,
+handle_get_all (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
- const struct ListAllPeersMessage *lpm;
+ const struct ListAllPeersMessage *lapm;
+ struct TransmitContext tcx;
+
+ lapm = (const struct ListAllPeersMessage *) message;
+ tcx.friend_only = ntohl (lapm->include_friend_only);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "`%s' message received\n", "GET_ALL");
+ tcx.tc = GNUNET_SERVER_transmit_context_create (client);
+ GNUNET_CONTAINER_multipeermap_iterate (hostmap, &add_to_tc, &tcx);
+ GNUNET_SERVER_transmit_context_append_data (tcx.tc, NULL, 0,
+ GNUNET_MESSAGE_TYPE_PEERINFO_INFO_END);
+ GNUNET_SERVER_transmit_context_run (tcx.tc, GNUNET_TIME_UNIT_FOREVER_REL);
+}
+
- lpm = (const struct ListAllPeersMessage *) message;
- send_to_each_host (NULL, ntohl (lpm->trust_change), client);
+
+/**
+ * Pass the given client the information we have in the respective
+ * host entry; the client is already in the notification context.
+ *
+ * @param cls the `struct GNUNET_SERVER_Client` to notify
+ * @param key key for the value (unused)
+ * @param value the `struct HostEntry` to notify the client about
+ * @return #GNUNET_YES (always, continue to iterate)
+ */
+static int
+do_notify_entry (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
+{
+ struct NotificationContext *nc = cls;
+ struct HostEntry *he = value;
+ struct InfoMessage *msg;
+
+ 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 no friend hello */
+ return GNUNET_YES;
+ }
+
+ msg = make_info_message (he, nc->include_friend_only);
+ GNUNET_SERVER_notification_context_unicast (notify_list,
+ nc->client,
+ &msg->header,
+ GNUNET_NO);
+ GNUNET_free (msg);
+ return GNUNET_YES;
}
* @param message the actual message
*/
static void
-handle_notify (void *cls,
- struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
+handle_notify (void *cls, struct GNUNET_SERVER_Client *client,
+ const struct GNUNET_MessageHeader *message)
{
- struct InfoMessage *msg;
- struct HostEntry *pos;
+ struct NotifyMessage *nm = (struct NotifyMessage *) message;
+ struct NotificationContext *nc;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "`%s' message received\n",
+ "NOTIFY");
+ nc = GNUNET_new (struct NotificationContext);
+ nc->client = client;
+ nc->include_friend_only = ntohl (nm->include_friend_only);
+
+ GNUNET_CONTAINER_DLL_insert (nc_head, nc_tail, nc);
+ GNUNET_SERVER_client_mark_monitor (client);
+ GNUNET_SERVER_notification_context_add (notify_list, client);
+ GNUNET_CONTAINER_multipeermap_iterate (hostmap, &do_notify_entry, nc);
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+}
- GNUNET_SERVER_notification_context_add (notify_list,
- client);
- pos = hosts;
- while (NULL != pos)
- {
- msg = make_info_message (pos);
- GNUNET_SERVER_notification_context_unicast (notify_list,
- client,
- &msg->header,
- GNUNET_NO);
- GNUNET_free (msg);
- pos = pos->next;
- }
+
+/**
+ * Client disconnect callback
+ *
+ * @param cls unused
+ * @param client server client
+ */
+static void
+disconnect_cb (void *cls,struct GNUNET_SERVER_Client *client)
+{
+ struct NotificationContext *cur;
+
+ for (cur = nc_head; NULL != cur; cur = cur->next)
+ if (cur->client == client)
+ break;
+ if (NULL == cur)
+ return;
+ GNUNET_CONTAINER_DLL_remove (nc_head, nc_tail, cur);
+ GNUNET_free (cur);
}
/**
- * List of handlers for the messages understood by this
- * service.
+ * Release memory taken by a host entry.
+ *
+ * @param cls NULL
+ * @param key key of the host entry
+ * @param value the `struct HostEntry` to free
+ * @return #GNUNET_YES (continue to iterate)
*/
-static struct GNUNET_SERVER_MessageHandler handlers[] = {
- {&handle_hello, NULL, GNUNET_MESSAGE_TYPE_HELLO, 0},
- {&handle_get, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_GET,
- sizeof (struct ListPeerMessage)},
- {&handle_get_all, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_GET_ALL,
- sizeof (struct ListAllPeersMessage)},
- {&handle_notify, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_NOTIFY,
- sizeof (struct GNUNET_MessageHeader)},
- {NULL, NULL, 0, 0}
-};
+static int
+free_host_entry (void *cls,
+ const struct GNUNET_PeerIdentity *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;
+}
/**
*/
static void
shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ struct NotificationContext *cur;
+ struct NotificationContext *next;
+
GNUNET_SERVER_notification_context_destroy (notify_list);
notify_list = NULL;
- if (stats != NULL)
- {
- GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
- stats = NULL;
- }
+
+ for (cur = nc_head; NULL != cur; cur = next)
+ {
+ next = cur->next;
+ GNUNET_CONTAINER_DLL_remove (nc_head, nc_tail, cur);
+ GNUNET_free (cur);
+ }
+ GNUNET_CONTAINER_multipeermap_iterate (hostmap, &free_host_entry, NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (hostmap);
+ if (NULL != stats)
+ {
+ GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ stats = NULL;
+ }
}
/**
- * Process statistics requests.
+ * Start up peerinfo service.
*
* @param cls closure
- * @param sched scheduler to use
* @param server the initialized server
* @param cfg configuration to use
*/
static void
-run (void *cls,
- struct GNUNET_SCHEDULER_Handle *sched,
- struct GNUNET_SERVER_Handle *server,
+run (void *cls, struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
- stats = GNUNET_STATISTICS_create (sched, "peerinfo", cfg);
+ static const struct GNUNET_SERVER_MessageHandler handlers[] = {
+ {&handle_hello, NULL, GNUNET_MESSAGE_TYPE_HELLO, 0},
+ {&handle_get, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_GET,
+ sizeof (struct ListPeerMessage)},
+ {&handle_get_all, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_GET_ALL,
+ sizeof (struct ListAllPeersMessage)},
+ {&handle_notify, NULL, GNUNET_MESSAGE_TYPE_PEERINFO_NOTIFY,
+ sizeof (struct NotifyMessage)},
+ {NULL, NULL, 0, 0}
+ };
+ char *peerdir;
+ char *ip;
+ struct DirScanContext dsc;
+ int noio;
+ int use_included;
+
+ hostmap = GNUNET_CONTAINER_multipeermap_create (1024, GNUNET_YES);
+ stats = GNUNET_STATISTICS_create ("peerinfo", cfg);
notify_list = GNUNET_SERVER_notification_context_create (server, 0);
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_filename (cfg,
- "peerinfo",
- "HOSTS",
- &networkIdDirectory));
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_filename (cfg,
- "peerinfo",
- "TRUST",
- &trustDirectory));
- GNUNET_DISK_directory_create (networkIdDirectory);
- GNUNET_DISK_directory_create (trustDirectory);
- GNUNET_SCHEDULER_add_with_priority (sched,
- GNUNET_SCHEDULER_PRIORITY_IDLE,
- &cron_scan_directory_data_hosts, NULL);
- GNUNET_SCHEDULER_add_with_priority (sched,
- GNUNET_SCHEDULER_PRIORITY_HIGH,
- &cron_flush_trust, NULL);
- GNUNET_SCHEDULER_add_with_priority (sched,
- GNUNET_SCHEDULER_PRIORITY_IDLE,
- &cron_clean_data_hosts, NULL);
- GNUNET_SCHEDULER_add_delayed (sched,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &shutdown_task, NULL);
+ noio = GNUNET_CONFIGURATION_get_value_yesno (cfg, "peerinfo", "NO_IO");
+ use_included = GNUNET_CONFIGURATION_get_value_yesno (cfg, "peerinfo", "USE_INCLUDED_HELLOS");
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
+ NULL);
+ if (GNUNET_YES != noio)
+ {
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_filename (cfg, "peerinfo",
+ "HOSTS",
+ &networkIdDirectory));
+ if (GNUNET_OK !=
+ GNUNET_DISK_directory_create (networkIdDirectory))
+ {
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+
+ GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_IDLE,
+ &cron_scan_directory_data_hosts, NULL);
+
+ GNUNET_SCHEDULER_add_with_priority (GNUNET_SCHEDULER_PRIORITY_IDLE,
+ &cron_clean_data_hosts, NULL);
+ if (GNUNET_YES == use_included)
+ {
+ ip = GNUNET_OS_installation_get_path (GNUNET_OS_IPK_DATADIR);
+ GNUNET_asprintf (&peerdir,
+ "%shellos",
+ ip);
+ GNUNET_free (ip);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Importing HELLOs from `%s'\n"),
+ peerdir);
+ dsc.matched = 0;
+ dsc.remove_files = GNUNET_NO;
+
+ GNUNET_DISK_directory_scan (peerdir,
+ &hosts_directory_scan_callback, &dsc);
+
+ GNUNET_free (peerdir);
+ }
+ }
GNUNET_SERVER_add_handlers (server, handlers);
+ GNUNET_SERVER_disconnect_notify (server, &disconnect_cb, NULL) ;
}
/**
- * The main function for the statistics service.
+ * The main function for the peerinfo service.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
{
int ret;
- ret = (GNUNET_OK ==
- GNUNET_SERVICE_run (argc,
- argv,
- "peerinfo",
- GNUNET_SERVICE_OPTION_NONE,
- &run, NULL)) ? 0 : 1;
+ ret =
+ (GNUNET_OK ==
+ GNUNET_SERVICE_run (argc, argv, "peerinfo", GNUNET_SERVICE_OPTION_NONE,
+ &run, NULL)) ? 0 : 1;
GNUNET_free_non_null (networkIdDirectory);
- GNUNET_free_non_null (trustDirectory);
return ret;
}
projects / oweals / gnunet.git / blobdiff