*/
/**
- * @file transport/plugin_transport_http.c
- * @brief Implementation of the HTTP transport service
- * @author Matthias Wachs
+ * @file transport/plugin_transport_template.c
+ * @brief template for a new transport service
+ * @author Christian Grothoff
*/
#include "platform.h"
+#include "gnunet_constants.h"
#include "gnunet_protocols.h"
#include "gnunet_connection_lib.h"
#include "gnunet_server_lib.h"
#include "gnunet_service_lib.h"
#include "gnunet_statistics_service.h"
#include "gnunet_transport_service.h"
+#include "gnunet_resolver_service.h"
#include "plugin_transport.h"
#include "microhttpd.h"
#include <curl/curl.h>
-#define VERBOSE GNUNET_YES
-#define DEBUG GNUNET_YES
+#define DEBUG_HTTP GNUNET_NO
+
+/**
+ * Text of the response sent back after the last bytes of a PUT
+ * request have been received (just to formally obey the HTTP
+ * protocol).
+ */
+#define HTTP_PUT_RESPONSE "Thank you!"
/**
* After how long do we expire an address that we
*/
#define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
-#define HTTP_TIMEOUT 600
+/**
+ * Page returned if request invalid
+ */
+#define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
/**
- * Text of the response sent back after the last bytes of a PUT
- * request have been received (just to formally obey the HTTP
- * protocol).
+ * Timeout for a http connect
*/
-#define HTTP_PUT_RESPONSE "Thank you!"
+#define HTTP_CONNECT_TIMEOUT 30
+
/**
* Encapsulation of all of the state of the plugin.
*/
struct Plugin;
+struct CBC
+{
+ char *buf;
+ size_t pos;
+ size_t size;
+ size_t len;
+};
+
/**
* Session handle for connections.
*/
struct Plugin *plugin;
- /**
- * The client (used to identify this connection)
- */
- /* void *client; */
-
/**
* Continuation function to call once the transmission buffer
* has again space available. NULL if there is no
*/
struct GNUNET_PeerIdentity sender;
+ /**
+ * Sender's url
+ */
+ char * url;
+
+ /**
+ * Sender's ip address to distinguish between incoming connections
+ */
+ char * ip;
+
+ /**
+ * Sender's ip address to distinguish between incoming connections
+ */
+ struct sockaddr_in * addr;
+
+ /**
+ * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
+ */
+ unsigned int is_client;
+
+ /**
+ * Is the connection active (GNUNET_YES) or terminated (GNUNET_NO)?
+ */
+ unsigned int is_active;
+
/**
* At what time did we reset last_received last?
*/
*/
uint32_t quota;
+ /**
+ * Is there a HTTP/PUT in progress?
+ */
+ unsigned int is_put_in_progress;
+
+ /**
+ * Encoded hash
+ */
+ struct GNUNET_CRYPTO_HashAsciiEncoded hash;
+
+ struct CBC cbc;
+
+ CURL *curl_handle;
};
/**
* List of open sessions.
*/
struct Session *sessions;
-};
-static struct Plugin *plugin;
+ /**
+ * Number of active sessions
+ */
+
+ unsigned int session_count;
+};
/**
* Daemon for listening for new IPv4 connections.
/**
- * Curl multi for managing client operations.
+ * Our primary task for http daemon handling IPv6 connections
*/
-static CURLM *curl_multi;
+static GNUNET_SCHEDULER_TaskIdentifier http_task_send;
+
/**
- * Function that can be used by the transport service to transmit
- * a message using the plugin.
- *
- * @param cls closure
- * @param target who should receive this message
- * @param priority how important is the message
- * @param msgbuf the message to transmit
- * @param msgbuf_size number of bytes in 'msgbuf'
- * @param timeout when should we time out
- * @param session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * otherwise the plugin may use other addresses or
- * existing connections (if available)
- * @param cont continuation to call once the message has
- * been transmitted (or if the transport is ready
- * for the next transmission call; or if the
- * peer disconnected...)
- * @param cont_cls closure for cont
- * @return number of bytes used (on the physical network, with overheads);
- * -1 on hard errors (i.e. address invalid); 0 is a legal value
- * and does NOT mean that the message was not transmitted (DV)
+ * Information about this plugin
*/
-static ssize_t
-http_plugin_send (void *cls,
- const struct GNUNET_PeerIdentity *
- target,
- const char *msgbuf,
- size_t msgbuf_size,
- unsigned int priority,
- struct GNUNET_TIME_Relative timeout,
- struct Session *session,
- const void *addr,
- size_t addrlen,
- int force_address,
- GNUNET_TRANSPORT_TransmitContinuation
- cont, void *cont_cls)
+static struct Plugin *plugin;
+
+/**
+ * cURL Multihandle
+ */
+static CURLM *multi_handle;
+
+/**
+ * Our hostname
+ */
+static char * hostname;
+
+/**
+ * Our ASCII encoded, hashed peer identity
+ * This string is used to distinguish between connections and is added to the urls
+ */
+static struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
+
+static char buf[2048];
+static char test[2048] = "HEEEELLLO";
+
+/**
+ * Message-Packet header.
+ */
+struct HTTPMessage
{
- int bytes_sent = 0;
- /* struct Plugin *plugin = cls; */
- return bytes_sent;
-}
+ /**
+ * size of the message, in bytes, including this header.
+ */
+ struct GNUNET_MessageHeader header;
+ /**
+ * What is the identity of the sender (GNUNET_hash of public key)
+ */
+ struct GNUNET_PeerIdentity sender;
+};
/**
- * Function that can be used to force the plugin to disconnect
- * from the given peer and cancel all previous transmissions
- * (and their continuationc).
- *
- * @param cls closure
- * @param target peer from which to disconnect
+ * Finds a http session in our linked list using peer identity as a key
+ * @param peer peeridentity
+ * @return http session corresponding to peer identity
*/
-void
-http_plugin_disconnect (void *cls,
- const struct GNUNET_PeerIdentity *target)
+static struct Session * find_session_by_pi( const struct GNUNET_PeerIdentity *peer )
{
- // struct Plugin *plugin = cls;
- // FIXME
- return;
-}
+ struct Session * cur;
+ GNUNET_HashCode hc_peer;
+ GNUNET_HashCode hc_current;
+ cur = plugin->sessions;
+ hc_peer = peer->hashPubKey;
+ while (cur != NULL)
+ {
+ hc_current = cur->sender.hashPubKey;
+ if ( 0 == GNUNET_CRYPTO_hash_cmp( &hc_peer, &hc_current))
+ return cur;
+ cur = plugin->sessions->next;
+ }
+ return NULL;
+}
/**
- * Convert the transports address to a nice, human-readable
- * format.
+ * Create a new session
*
- * @param cls closure
- * @param type name of the transport that generated the address
- * @param addr one of the addresses of the host, NULL for the last address
- * the specific address format depends on the transport
- * @param addrlen length of the address
- * @param numeric should (IP) addresses be displayed in numeric form?
- * @param timeout after how long should we give up?
- * @param asc function to call on each string
- * @param asc_cls closure for asc
+ * @param address address the peer is using
+ * @peer peer identity
+ * @return created session object
*/
-static void
-http_plugin_address_pretty_printer (void *cls,
- const char *type,
- const void *addr,
- size_t addrlen,
- int numeric,
- struct GNUNET_TIME_Relative timeout,
- GNUNET_TRANSPORT_AddressStringCallback
- asc, void *asc_cls)
+
+static struct Session * create_session (struct sockaddr_in *address, const struct GNUNET_PeerIdentity *peer)
{
- asc (asc_cls, NULL);
-}
+ struct sockaddr_in *addrin;
+ struct sockaddr_in6 *addrin6;
+ struct Session * ses = GNUNET_malloc ( sizeof( struct Session) );
+ ses->addr = GNUNET_malloc ( sizeof (struct sockaddr_in) );
+
+ ses->next = NULL;
+ ses->plugin = plugin;
+
+ memcpy(ses->addr, address, sizeof (struct sockaddr_in));
+ if ( AF_INET == address->sin_family)
+ {
+ ses->ip = GNUNET_malloc (INET_ADDRSTRLEN);
+ addrin = address;
+ inet_ntop(addrin->sin_family,&(addrin->sin_addr),ses->ip,INET_ADDRSTRLEN);
+ }
+ if ( AF_INET6 == address->sin_family)
+ {
+ ses->ip = GNUNET_malloc (INET6_ADDRSTRLEN);
+ addrin6 = (struct sockaddr_in6 *) address;
+ inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr) ,ses->ip,INET6_ADDRSTRLEN);
+ }
+ memcpy(&ses->sender, peer, sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_CRYPTO_hash_to_enc(&ses->sender.hashPubKey,&(ses->hash));
+ ses->is_active = GNUNET_NO;
+ return ses;
+}
/**
- * Another peer has suggested an address for this
- * peer and transport plugin. Check that this could be a valid
- * address. If so, consider adding it to the list
- * of addresses.
- *
- * @param cls closure
- * @param addr pointer to the address
- * @param addrlen length of addr
- * @return GNUNET_OK if this is a plausible address for this peer
- * and transport
+ * Callback called by MHD when a connection is terminated
*/
-static int
-http_plugin_address_suggested (void *cls,
- void *addr, size_t addrlen)
+static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
{
- /* struct Plugin *plugin = cls; */
+ struct Session * cs;
- /* check if the address is plausible; if so,
- add it to our list! */
- return GNUNET_OK;
+ cs = *httpSessionCache;
+ if (cs != NULL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->sender));
+ /* session set to inactive */
+ cs->is_active = GNUNET_NO;
+ cs->is_put_in_progress = GNUNET_NO;
+ }
+ return;
}
/**
acceptPolicyCallback (void *cls,
const struct sockaddr *addr, socklen_t addr_len)
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Incoming connection \n");
- /* Currently all incoming connections are accepted, so nothing to do here */
+ /* Every connection is accepted, nothing more to do here */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connect!\n");
return MHD_YES;
}
+
+
/**
* Process GET or PUT request received via MHD. For
* GET, queue response that will send back our pending
size_t * upload_data_size, void **httpSessionCache)
{
struct MHD_Response *response;
+ struct Session * cs;
+ struct Session * cs_temp;
+ const union MHD_ConnectionInfo * conn_info;
+ struct sockaddr_in *addrin;
+ struct sockaddr_in6 *addrin6;
+ char * address = NULL;
+ struct GNUNET_PeerIdentity pi_in;
+ int res = GNUNET_NO;
+ size_t bytes_recv;
+ struct GNUNET_MessageHeader *gn_msg;
+ int send_error_to_client;
+
+ gn_msg = NULL;
+ send_error_to_client = GNUNET_NO;
+ if ( NULL == *httpSessionCache)
+ {
+ /* check url for peer identity */
+ res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
+ if ( GNUNET_SYSERR == res )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident\n");
+ response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
+ res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
+ MHD_destroy_response (response);
+ return res;
+ }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has an incoming `%s' request from \n",method);
-
- /* Find out if session exists, otherwise create one */
-
+ conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
+ /* Incoming IPv4 connection */
+ if ( AF_INET == conn_info->client_addr->sin_family)
+ {
+ address = GNUNET_malloc (INET_ADDRSTRLEN);
+ addrin = conn_info->client_addr;
+ inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
+ }
+ /* Incoming IPv6 connection */
+ if ( AF_INET6 == conn_info->client_addr->sin_family)
+ {
+ address = GNUNET_malloc (INET6_ADDRSTRLEN);
+ addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
+ inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
+ }
+ /* find existing session for address */
+ cs = NULL;
+ if (plugin->session_count > 0)
+ {
+ cs = plugin->sessions;
+ while ( NULL != cs)
+ {
+
+ /* Comparison based on ip address */
+ // res = (0 == memcmp(&(conn_info->client_addr->sin_addr),&(cs->addr->sin_addr), sizeof (struct in_addr))) ? GNUNET_YES : GNUNET_NO;
+
+ /* Comparison based on ip address, port number and address family */
+ // res = (0 == memcmp((conn_info->client_addr),(cs->addr), sizeof (struct sockaddr_in))) ? GNUNET_YES : GNUNET_NO;
+
+ /* Comparison based on PeerIdentity */
+ res = (0 == memcmp(&pi_in,&(cs->sender), sizeof (struct GNUNET_PeerIdentity))) ? GNUNET_YES : GNUNET_NO;
+
+ if ( GNUNET_YES == res)
+ {
+ /* existing session for this address found */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session `%s' found\n",address);
+ break;
+ }
+ cs = cs->next;
+ }
+ }
+ /* no existing session, create a new one*/
+ if (cs == NULL )
+ {
+ /* create new session object */
+ cs = create_session(conn_info->client_addr, &pi_in);
+
+ /* Insert session into linked list */
+ if ( plugin->sessions == NULL)
+ {
+ plugin->sessions = cs;
+ plugin->session_count = 1;
+ }
+ cs_temp = plugin->sessions;
+ while ( cs_temp->next != NULL )
+ {
+ cs_temp = cs_temp->next;
+ }
+ if (cs_temp != cs )
+ {
+ cs_temp->next = cs;
+ plugin->session_count++;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", address, plugin->session_count);
+ }
+ /* Set closure */
+ if (*httpSessionCache == NULL)
+ {
+ *httpSessionCache = cs;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`[%s]:%u')\n",method, GNUNET_i2s(&cs->sender),cs->ip,cs->addr->sin_port);
+ }
+ else
+ {
+ cs = *httpSessionCache;
+ }
/* Is it a PUT or a GET request */
if ( 0 == strcmp (MHD_HTTP_METHOD_PUT, method) )
{
- /* PUT method here */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got PUT Request with size %u \n",upload_data_size);
- GNUNET_STATISTICS_update( plugin->env->stats , gettext_noop("# PUT requests"), 1, GNUNET_NO);
+ /* New */
+ if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
+ {
+ /* not yet ready */
+ cs->is_put_in_progress = GNUNET_YES;
+ cs->is_active = GNUNET_YES;
+ return MHD_YES;
+ }
+ if ( *upload_data_size > 0 )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"PUT URL: `%s'\n",url);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"PUT Request: %lu bytes: `%s' \n", (*upload_data_size), upload_data);
+ /* No data left */
+ bytes_recv = *upload_data_size ;
+ *upload_data_size = 0;
+
+ /* checking size */
+ if (bytes_recv < sizeof (struct GNUNET_MessageHeader))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Message too small, is %u bytes, has to be at least %u '\n",bytes_recv, sizeof(struct GNUNET_MessageHeader));
+ send_error_to_client = GNUNET_YES;
+ }
+
+ if ( bytes_recv > GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Message too big, is %u bytes, maximum %u '\n",bytes_recv, GNUNET_SERVER_MAX_MESSAGE_SIZE);
+ send_error_to_client = GNUNET_YES;
+ }
+
+ struct GNUNET_MessageHeader * gn_msg = GNUNET_malloc (bytes_recv);
+ memcpy (gn_msg,upload_data,bytes_recv);
+
+ if ( ntohs(gn_msg->size) != bytes_recv )
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Message has incorrect size, is %u bytes vs %u recieved'\n",ntohs(gn_msg->size) , bytes_recv);
+ GNUNET_free (gn_msg);
+ send_error_to_client = GNUNET_YES;
+ }
+
+ if ( GNUNET_YES == send_error_to_client)
+ {
+ response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
+ res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
+ MHD_destroy_response (response);
+ return MHD_NO;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved GNUnet message type %u size %u and payload %u \n",ntohs (gn_msg->type), ntohs (gn_msg->size), ntohs (gn_msg->size)-sizeof(struct GNUNET_MessageHeader));
+
+ /* forwarding message to transport */
+ plugin->env->receive(plugin->env, &(cs->sender), gn_msg, 1, cs , cs->ip, strlen(cs->ip) );
+ return MHD_YES;
+ }
+ if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES))
+ {
+ cs->is_put_in_progress = GNUNET_NO;
+ response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
+ res = MHD_queue_response (session, MHD_HTTP_OK, response);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
+ MHD_destroy_response (response);
+ return res;
+ }
}
if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request with size\n");
- GNUNET_STATISTICS_update( plugin->env->stats , gettext_noop("# GET requests"), 1, GNUNET_NO);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
+ response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
+ res = MHD_queue_response (session, MHD_HTTP_OK, response);
+ MHD_destroy_response (response);
+ return res;
}
-
- response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),
- HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
- MHD_queue_response (session, MHD_HTTP_OK, response);
- MHD_destroy_response (response);
-
- return MHD_YES;
+ return MHD_NO;
}
-/**
- * Function that queries MHD's select sets and
- * starts the task waiting for them.
- */
-static GNUNET_SCHEDULER_TaskIdentifier prepare_daemon (struct MHD_Daemon *daemon_handle);
+
/**
* Call MHD to process pending requests and then go back
* and schedule the next run.
*/
-static void
-run_daemon (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct MHD_Daemon *daemon_handle = cls;
-
- if (daemon_handle == http_daemon_v4)
- http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
-
- if (daemon_handle == http_daemon_v6)
- http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
-
-
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
- GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
- if (daemon_handle == http_daemon_v4)
- http_task_v4 = prepare_daemon (daemon_handle);
- if (daemon_handle == http_daemon_v6)
- http_task_v6 = prepare_daemon (daemon_handle);
-}
+static void http_daemon_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
/**
* Function that queries MHD's select sets and
* starts the task waiting for them.
*/
static GNUNET_SCHEDULER_TaskIdentifier
-prepare_daemon (struct MHD_Daemon *daemon_handle)
+http_daemon_prepare (struct MHD_Daemon *daemon_handle)
{
GNUNET_SCHEDULER_TaskIdentifier ret;
fd_set rs;
tv,
wrs,
wws,
- &run_daemon,
+ &http_daemon_run,
daemon_handle);
GNUNET_NETWORK_fdset_destroy (wrs);
GNUNET_NETWORK_fdset_destroy (wws);
return ret;
}
+/**
+ * Call MHD to process pending requests and then go back
+ * and schedule the next run.
+ */
+static void
+http_daemon_run (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct MHD_Daemon *daemon_handle = cls;
+
+ if (daemon_handle == http_daemon_v4)
+ http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
+
+ if (daemon_handle == http_daemon_v6)
+ http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+
+
+
+ GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
+ if (daemon_handle == http_daemon_v4)
+ http_task_v4 = http_daemon_prepare (daemon_handle);
+ if (daemon_handle == http_daemon_v6)
+ http_task_v6 = http_daemon_prepare (daemon_handle);
+ return;
+}
+
+static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
+{
+ struct Session * ses = ptr;
+ struct CBC * cbc = &(ses->cbc);
+
+ if (cbc->len > (size * nmemb))
+ return CURL_READFUNC_ABORT;
+
+ if (( cbc->pos == cbc->len) && (cbc->len < (size * nmemb)))
+ return 0;
+ memcpy(stream, cbc->buf, cbc->len);
+ cbc->pos = cbc->len;
+ return cbc->len;
+}
+
+
+static size_t send_prepare(struct Session* session );
+
+static void send_execute (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ int running;
+ struct CURLMsg *msg;
+ CURLMcode mret;
+ char * current_url= "test";
+
+ // GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"send_execute\n");
+
+ http_task_send = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+
+ do
+ {
+ running = 0;
+ mret = curl_multi_perform (multi_handle, &running);
+ //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"send_execute %u\n", running);
+ if (running == 0)
+ {
+ do
+ {
+
+ msg = curl_multi_info_read (multi_handle, &running);
+ GNUNET_break (msg != NULL);
+ if (msg == NULL)
+ break;
+ switch (msg->msg)
+ {
+ case CURLMSG_DONE:
+ if ( (msg->data.result != CURLE_OK) &&
+ (msg->data.result != CURLE_GOT_NOTHING) )
+ GNUNET_log(GNUNET_ERROR_TYPE_INFO,
+ _("%s failed for `%s' at %s:%d: `%s'\n"),
+ "curl_multi_perform",
+ current_url,
+ __FILE__,
+ __LINE__,
+ curl_easy_strerror (msg->data.result));
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Download of hostlist `%s' completed.\n"),
+ current_url);
+ }
+ return;
+ default:
+ break;
+ }
+
+ }
+ while ( (running > 0) );
+ }
+ }
+ while (mret == CURLM_CALL_MULTI_PERFORM);
+ send_prepare(cls);
+}
+
+
+static size_t send_prepare(struct Session* session )
+{
+ fd_set rs;
+ fd_set ws;
+ fd_set es;
+ int max;
+ struct GNUNET_NETWORK_FDSet *grs;
+ struct GNUNET_NETWORK_FDSet *gws;
+ long to;
+ CURLMcode mret;
+
+// GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"send_prepare\n");
+ max = -1;
+ FD_ZERO (&rs);
+ FD_ZERO (&ws);
+ FD_ZERO (&es);
+ mret = curl_multi_fdset (multi_handle, &rs, &ws, &es, &max);
+ if (mret != CURLM_OK)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("%s failed at %s:%d: `%s'\n"),
+ "curl_multi_fdset", __FILE__, __LINE__,
+ curl_multi_strerror (mret));
+ return -1;
+ }
+ mret = curl_multi_timeout (multi_handle, &to);
+ if (mret != CURLM_OK)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("%s failed at %s:%d: `%s'\n"),
+ "curl_multi_timeout", __FILE__, __LINE__,
+ curl_multi_strerror (mret));
+ return -1;
+ }
+
+ grs = GNUNET_NETWORK_fdset_create ();
+ gws = GNUNET_NETWORK_fdset_create ();
+ GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
+ GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
+ http_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
+ GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+ GNUNET_SCHEDULER_NO_TASK,
+ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
+ grs,
+ gws,
+ &send_execute,
+ session);
+ GNUNET_NETWORK_fdset_destroy (gws);
+ GNUNET_NETWORK_fdset_destroy (grs);
+
+ /* FIXME: return bytes REALLY sent */
+ return 0;
+}
+
+
+/**
+ * Function that can be used by the transport service to transmit
+ * a message using the plugin.
+ *
+ * @param cls closure
+ * @param target who should receive this message
+ * @param priority how important is the message
+ * @param msgbuf the message to transmit
+ * @param msgbuf_size number of bytes in 'msgbuf'
+ * @param timeout when should we time out
+ * @param session which session must be used (or NULL for "any")
+ * @param addr the address to use (can be NULL if the plugin
+ * is "on its own" (i.e. re-use existing TCP connection))
+ * @param addrlen length of the address in bytes
+ * @param force_address GNUNET_YES if the plugin MUST use the given address,
+ * otherwise the plugin may use other addresses or
+ * existing connections (if available)
+ * @param cont continuation to call once the message has
+ * been transmitted (or if the transport is ready
+ * for the next transmission call; or if the
+ * peer disconnected...)
+ * @param cont_cls closure for cont
+ * @return number of bytes used (on the physical network, with overheads);
+ * -1 on hard errors (i.e. address invalid); 0 is a legal value
+ * and does NOT mean that the message was not transmitted (DV)
+ */
+static ssize_t
+http_plugin_send (void *cls,
+ const struct GNUNET_PeerIdentity *target,
+ const char *msgbuf,
+ size_t msgbuf_size,
+ unsigned int priority,
+ struct GNUNET_TIME_Relative timeout,
+ struct Session *session,
+ const void *addr,
+ size_t addrlen,
+ int force_address,
+ GNUNET_TRANSPORT_TransmitContinuation cont,
+ void *cont_cls)
+{
+ struct Session* ses;
+ struct Session* ses_temp;
+ int bytes_sent = 0;
+
+ //FILE * hd_src ;
+
+ CURLMcode mret;
+ char * url;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport told plugin to send to peer `%s'\n",GNUNET_i2s(target));
+
+ /* find session for peer */
+ ses = find_session_by_pi (target);
+ if (NULL != ses )
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Existing session for peer `%s' found\n", GNUNET_i2s(target));
+ if ( ses == NULL)
+ {
+ /* create new session object */
+
+ /*FIXME: what is const void * really? Assuming struct sockaddr_in * ! */
+ ses = create_session((struct sockaddr_in *) addr, target);
+ ses->is_active = GNUNET_YES;
+
+ /* Insert session into linked list */
+ if ( plugin->sessions == NULL)
+ {
+ plugin->sessions = ses;
+ plugin->session_count = 1;
+ }
+ ses_temp = plugin->sessions;
+ while ( ses_temp->next != NULL )
+ {
+ ses_temp = ses_temp->next;
+ }
+ if (ses_temp != ses )
+ {
+ ses_temp->next = ses;
+ plugin->session_count++;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", GNUNET_i2s(target), plugin->session_count);
+ }
+
+ ses->curl_handle = curl_easy_init();
+ if( NULL == ses->curl_handle)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Getting cURL handle failed\n");
+ return -1;
+ }
+
+ url = GNUNET_malloc( 7 + strlen(ses->ip) + 7 + strlen ((char *) &(ses->hash)) + 1);
+ GNUNET_asprintf(&url,"http://%s:%u/%s",ses->ip,12389, (char *) &(ses->hash));
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"url: %s %u\n",url, 7 + strlen(ses->ip) + 7 + strlen ((char *) &(ses->hash)) + 1 );
+
+ (ses->cbc).len = msgbuf_size;
+ (ses->cbc).buf = buf;
+ memcpy(ses->cbc.buf,msgbuf,msgbuf_size);
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"msgbuf %s cbc: len %u cbc.buf `%s' test `%s'\n",msgbuf,ses->cbc.len,ses->cbc.buf,test);
+
+ curl_easy_setopt(ses->curl_handle, CURLOPT_VERBOSE, 1L);
+ curl_easy_setopt(ses->curl_handle, CURLOPT_URL, url);
+ curl_easy_setopt(ses->curl_handle, CURLOPT_PUT, 1L);
+ curl_easy_setopt(ses->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
+ curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
+ curl_easy_setopt(ses->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) (ses->cbc).len);
+ curl_easy_setopt(curl_handle, CURLOPT_TIMEOUT, (timeout.value / 1000 ));
+ curl_easy_setopt(curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
+
+ mret = curl_multi_add_handle(multi_handle, ses->curl_handle);
+ if (mret != CURLM_OK)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("%s failed at %s:%d: `%s'\n"),
+ "curl_multi_add_handle", __FILE__, __LINE__,
+ curl_multi_strerror (mret));
+ return -1;
+ }
+ bytes_sent = send_prepare (ses );
+ GNUNET_free ( url );
+ return bytes_sent;
+}
+
+
+
+/**
+ * Function that can be used to force the plugin to disconnect
+ * from the given peer and cancel all previous transmissions
+ * (and their continuationc).
+ *
+ * @param cls closure
+ * @param target peer from which to disconnect
+ */
+static void
+http_plugin_disconnect (void *cls,
+ const struct GNUNET_PeerIdentity *target)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
+ // struct Plugin *plugin = cls;
+ // FIXME
+}
+
+
+/**
+ * Convert the transports address to a nice, human-readable
+ * format.
+ *
+ * @param cls closure
+ * @param type name of the transport that generated the address
+ * @param addr one of the addresses of the host, NULL for the last address
+ * the specific address format depends on the transport
+ * @param addrlen length of the address
+ * @param numeric should (IP) addresses be displayed in numeric form?
+ * @param timeout after how long should we give up?
+ * @param asc function to call on each string
+ * @param asc_cls closure for asc
+ */
+static void
+http_plugin_address_pretty_printer (void *cls,
+ const char *type,
+ const void *addr,
+ size_t addrlen,
+ int numeric,
+ struct GNUNET_TIME_Relative timeout,
+ GNUNET_TRANSPORT_AddressStringCallback
+ asc, void *asc_cls)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_address_pretty_printer\n");
+ asc (asc_cls, NULL);
+}
+
+
+
+/**
+ * Another peer has suggested an address for this
+ * peer and transport plugin. Check that this could be a valid
+ * address. If so, consider adding it to the list
+ * of addresses.
+ *
+ * @param cls closure
+ * @param addr pointer to the address
+ * @param addrlen length of addr
+ * @return GNUNET_OK if this is a plausible address for this peer
+ * and transport
+ */
+static int
+http_plugin_address_suggested (void *cls,
+ void *addr, size_t addrlen)
+{
+ /* struct Plugin *plugin = cls; */
+
+ /* check if the address is plausible; if so,
+ add it to our list! */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_address_suggested\n");
+ return GNUNET_OK;
+}
+
+
+/**
+ * Function called for a quick conversion of the binary address to
+ * a numeric address. Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
+ *
+ * @param cls closure
+ * @param addr binary address
+ * @param addrlen length of the address
+ * @return string representing the same address
+ */
+static const char*
+http_plugin_address_to_string (void *cls,
+ const void *addr,
+ size_t addrlen)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_address_to_string\n");
+ GNUNET_break (0);
+ return NULL;
+}
+
/**
* Exit point from the plugin.
*/
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
+ struct Session * cs;
+ struct Session * cs_next;
+ CURLMcode mret;
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Shutting down http plugin...\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
if ( http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v4);
+ http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
}
if ( http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
{
GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v6);
+ http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+ }
+
+ if ( http_task_send != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_send);
+ http_task_send = GNUNET_SCHEDULER_NO_TASK;
}
if (http_daemon_v4 != NULL)
http_daemon_v6 = NULL;
}
+ mret = curl_multi_cleanup(multi_handle);
+ if ( CURLM_OK != mret)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
+
+ /* free all sessions */
+ cs = plugin->sessions;
+ while ( NULL != cs)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session to `%s'\n",cs->ip);
+ cs_next = cs->next;
+ GNUNET_free (cs->ip);
+ GNUNET_free (cs->addr);
+ GNUNET_free (cs);
+ plugin->session_count--;
+ cs = cs_next;
+ }
+
+ /* GNUNET_SERVICE_stop (plugin->service); */
- if ( NULL != curl_multi)
- {
- curl_multi_cleanup (curl_multi);
- curl_multi = NULL;
- }
GNUNET_free (plugin);
GNUNET_free (api);
return NULL;
}
+
/**
* Entry point for the plugin.
*/
{
struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
struct GNUNET_TRANSPORT_PluginFunctions *api;
+ struct GNUNET_SERVICE_Context *service;
+ unsigned int timeout;
+ struct GNUNET_TIME_Relative gn_timeout;
long long unsigned int port;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
+
+ service = NULL;
+ /*
+ service = GNUNET_SERVICE_start ("transport-http", env->sched, env->cfg);
+ if (service == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, "", _
+ ("Failed to start service for `%s' transport plugin.\n"),
+ "http");
+ return NULL;
+ }
+ */
+
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->env = env;
-
+ plugin->sessions = NULL;
+ plugin->service = service;
api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
api->cls = plugin;
api->send = &http_plugin_send;
api->disconnect = &http_plugin_disconnect;
api->address_pretty_printer = &http_plugin_address_pretty_printer;
api->check_address = &http_plugin_address_suggested;
+ api->address_to_string = &http_plugin_address_to_string;
+ hostname = GNUNET_RESOLVER_local_fqdn_get ();
+
+ /* Hashing our identity to use it in URLs */
+ GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &my_ascii_hash_ident);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
/* Reading port number from config file */
if ((GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (env->cfg,
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
"http",
_
- ("Require valid port number for service `%s' in configuration!\n"),
+ ("Require valid port number for transport plugin `%s' in configuration!\n"),
"transport-http");
libgnunet_plugin_transport_http_done (api);
return NULL;
}
+
+ gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
+ timeout = ( gn_timeout.value / 1000);
if ((http_daemon_v4 == NULL) && (http_daemon_v6 == NULL) && (port != 0))
{
- http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
- port,
- &acceptPolicyCallback,
- NULL, &accessHandlerCallback, NULL,
- MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
- MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
- MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
- MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
- MHD_OPTION_END);
- http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
- port,
- &acceptPolicyCallback,
- NULL, &accessHandlerCallback, NULL,
- MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
- MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
- MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
- MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
- MHD_OPTION_END);
+ http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
+ port,
+ &acceptPolicyCallback,
+ NULL , &accessHandlerCallback, NULL,
+ MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
+ MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
+ MHD_OPTION_CONNECTION_TIMEOUT, timeout,
+ /* FIXME: set correct limit */
+ MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
+ MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
+ MHD_OPTION_END);
+ http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
+ port,
+ &acceptPolicyCallback,
+ NULL , &accessHandlerCallback, NULL,
+ MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
+ MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
+ MHD_OPTION_CONNECTION_TIMEOUT, timeout,
+ /* FIXME: set correct limit */
+ MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
+ MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
+ MHD_OPTION_END);
}
-
-
- if ((http_daemon_v4 != NULL) && (http_daemon_v6 != NULL))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD on port %u with IPv4 and IPv6 enabled\n",port);
- if ((http_daemon_v4 != NULL) && (http_daemon_v6 == NULL))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD on port %u with IPv4 enabled\n",port);
- if ((http_daemon_v4 == NULL) && (http_daemon_v6 != NULL))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD on port %u with IPv6 enabled\n",port);
-
- curl_multi = curl_multi_init ();
-
if (http_daemon_v4 != NULL)
- http_task_v4 = prepare_daemon (http_daemon_v4);
+ http_task_v4 = http_daemon_prepare (http_daemon_v4);
if (http_daemon_v6 != NULL)
- http_task_v6 = prepare_daemon (http_daemon_v6);
+ http_task_v6 = http_daemon_prepare (http_daemon_v6);
- if (NULL == plugin->env->stats)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Failed to retrieve statistics handle\n"));
- libgnunet_plugin_transport_http_done (api);
- return NULL;
- }
-
- GNUNET_STATISTICS_set ( env->stats, "# PUT requests", 0, GNUNET_NO);
- GNUNET_STATISTICS_set ( env->stats, "# GET requests", 0, GNUNET_NO);
+ if (http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
+ if (http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
- if ( ((NULL == http_daemon_v4) && (NULL == http_daemon_v6)) || (NULL == curl_multi))
+ /* Initializing cURL */
+ multi_handle = curl_multi_init();
+ if ( NULL == multi_handle )
{
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Initializing http plugin failed\n");
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ "http",
+ _("Could not initialize curl multi handle, failed to start http plugin!\n"),
+ "transport-http");
libgnunet_plugin_transport_http_done (api);
return NULL;
}
- else
- return api;
+ return api;
}
-/* end of plugin_transport_http.c */
+/* end of plugin_transport_template.c */
projects / oweals / gnunet.git / blobdiff