/** * Process data from ATS. * * Process data from one of the ATS events. * * @param[in,out] contp - the continuation * @param[in,out] ibd - the filter descriptor */ static void process_data(TSCont contp, ibd_ctx *ibd) { int64_t ntodo; int64_t navail; TSIOBufferReader input_reader, output_reader; TSIOBufferBlock block; const char *buf; int64_t nbytes; ib_status_t rc; tsib_filter_ctx *fctx = ibd->data; tsib_txn_ctx *txndata = TSContDataGet(contp); TSVIO input_vio = TSVConnWriteVIOGet(contp); TSIOBuffer in_buf = TSVIOBufferGet(input_vio); /* Test whether we're going into an errordoc */ if (HTTP_CODE(txndata->status)) { /* We're going to an error document, * so we discard all this data */ ib_log_debug2_tx(txndata->tx, "Status is %d, discarding", txndata->status); ibd->data->buffering = IOBUF_DISCARD; } /* Test for EOS */ if (in_buf == NULL) { if (fctx->output_buffer != NULL) { /* flush anything we have buffered. This is final! */ rc = flush_data(fctx, -1, 1); switch(rc) { case IB_OK: break; case IB_EBADVAL: ib_log_error_tx(txndata->tx, "Bad/Inconsistent stream edit(s) ignored."); break; default: /* Can't happen unless a new status is introduced */ ib_log_error_tx(txndata->tx, "Unhandled return value %d", rc); break; } } else { /* I guess NULL input may mean something other than EOS. * This appears to be possible when * processing an HTTP error from the backend. */ ib_log_debug2_tx(txndata->tx, "Filter input was null. No filtering."); /* RNS-1268: seems we may have to go through all the motions * of creating and enabling an output_vio with no data. */ fctx->output_buffer = TSIOBufferCreate(); ib_mm_register_cleanup(txndata->tx->mm, (ib_mm_cleanup_fn_t) TSIOBufferDestroy, (void*) fctx->output_buffer); output_reader = TSIOBufferReaderAlloc(fctx->output_buffer); fctx->output_vio = TSVConnWrite(TSTransformOutputVConnGet(contp), contp, output_reader, 0); TSVIOReenable(fctx->output_vio); } return; } /* Test for first time, and initialise. */ if (!fctx->output_buffer) { // FIXME - What to choose here and why? int64_t output_vio_sz = TSVIONBytesGet(input_vio); // NOTE: Using INT64_MAX asserts on 4.2.2: InkAPI.cc:6261: failed assert `sdk_sanity_check_iocore_structure(connp) == TS_SUCCESS` //int64_t output_vio_sz = INT64_MAX; // NOTE: Does it matter that this is only INT32_MAX as in the examples? // int64_t output_vio_sz = INT32_MAX; //int64_t output_vio_sz = fctx->have_edits // ? INT64_MAX // : TSVIONBytesGet(input_vio); fctx->output_buffer = TSIOBufferCreate(); ib_mm_register_cleanup(txndata->tx->mm, (ib_mm_cleanup_fn_t) TSIOBufferDestroy, (void*) fctx->output_buffer); // FIXME - Where is TSIOBufferReaderFree()? output_reader = TSIOBufferReaderAlloc(fctx->output_buffer); fctx->output_vio = TSVConnWrite(TSTransformOutputVConnGet(contp), contp, output_reader, output_vio_sz); fctx->buffer = TSIOBufferCreate(); ib_mm_register_cleanup(txndata->tx->mm, (ib_mm_cleanup_fn_t) TSIOBufferDestroy, (void*) fctx->buffer); // FIXME - Where is TSIOBufferReaderFree()? fctx->reader = TSIOBufferReaderAlloc(fctx->buffer); /* Get the buffering config */ if (!HTTP_CODE(txndata->status)) { buffer_init(ibd, txndata->tx); } } /* Get any unprocessed bytes. */ ntodo = TSVIONTodoGet(input_vio); /* Test for EOS */ if (ntodo == 0) { ib_log_debug2_tx(txndata->tx, "ntodo zero before consuming data"); flush_data(fctx, -1, 1); /* Call back the input VIO continuation to let it know that we * have completed the write operation. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_COMPLETE, input_vio); return; } /* OK, there's some input awaiting our attention */ input_reader = TSVIOReaderGet(input_vio); while (navail = TSIOBufferReaderAvail(input_reader), navail > 0) { block = TSIOBufferReaderStart(input_reader); buf = TSIOBufferBlockReadStart(block, input_reader, &nbytes); rc = (*ibd->ibd->ib_notify_body)(txndata->tx->ib, txndata->tx, buf, nbytes); if (rc != IB_OK) { ib_log_error_tx(txndata->tx, "Error %d notifying body data.", rc); } rc = buffer_data_chunk(fctx, input_reader, nbytes); switch (rc) { case IB_EAGAIN: case IB_OK: break; case IB_EBADVAL: ib_log_error_tx(txndata->tx, "Bad/Inconsistent stream edit(s) ignored."); break; default: /* Can't happen unless a new status is introduced */ ib_log_error_tx(txndata->tx, "Unhandled return value %d", rc); break; } TSIOBufferReaderConsume(input_reader, nbytes); TSVIONDoneSet(input_vio, TSVIONDoneGet(input_vio) + nbytes); } ntodo = TSVIONTodoGet(input_vio); if (ntodo == 0) { ib_log_debug2_tx(txndata->tx, "ntodo zero after consuming data"); flush_data(fctx, -1, 1); /* Call back the input VIO continuation to let it know that we * have completed the write operation. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_COMPLETE, input_vio); } else { /* Call back the input VIO continuation to let it know that we * are ready for more data. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_READY, input_vio); } }
static void ironbee_plugin_txn_start(TSCont contp, TSHttpTxn txnp) { assert(contp != NULL); assert(txnp != NULL); /* start of Request */ /* First req on a connection, we set up conn stuff */ ib_status_t rc; ib_engine_t *ib = NULL; TSCont mycont; tsib_ssn_ctx *ssndata; tsib_txn_ctx *txndata; ssndata = TSContDataGet(contp); if (ssndata->iconn == NULL) { rc = tsib_manager_engine_acquire(&ib); if (rc == IB_DECLINED) { /* OK, this means the manager is disabled deliberately, * but otherwise all's well. So this TXN * gets processed without intervention from Ironbee * and is invisble when our SSN_CLOSE hook runs. */ TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); TSDebug("ironbee", "Decline from engine manager"); return; } else if (rc != IB_OK) { TSError("[ironbee] Failed to acquire engine: %s", ib_status_to_string(rc)); goto noib_error; } if (ib != NULL) { rc = ib_conn_create(ib, &ssndata->iconn, contp); if (rc != IB_OK) { TSError("[ironbee] ib_conn_create: %s", ib_status_to_string(rc)); tsib_manager_engine_release(ib); goto noib_error; } /* In the normal case, release the engine when the * connection's memory pool is destroyed */ rc = ib_mm_register_cleanup(ssndata->iconn->mm, cleanup_ib_connection, ib); if (rc != IB_OK) { TSError("[ironbee] ib_mm_register_cleanup: %s", ib_status_to_string(rc)); tsib_manager_engine_release(ib); goto noib_error; } TSDebug("ironbee", "CONN CREATE: conn=%p", ssndata->iconn); ssndata->txnp = txnp; ssndata->txn_count = ssndata->closing = 0; rc = ironbee_conn_init(ssndata); if (rc != IB_OK) { TSError("[ironbee] ironbee_conn_init: %s", ib_status_to_string(rc)); goto noib_error; } TSContDataSet(contp, ssndata); TSDebug("ironbee", "ironbee_plugin: ib_state_notify_conn_opened()"); rc = ib_state_notify_conn_opened(ib, ssndata->iconn); if (rc != IB_OK) { TSError("[ironbee] Failed to notify connection opened: %s", ib_status_to_string(rc)); } } else { /* Use TSError where there's no ib or tx */ TSError("Ironbee: No ironbee engine!"); goto noib_error; } } /* create a txn cont (request ctx) and tx */ txndata = TSmalloc(sizeof(*txndata)); memset(txndata, 0, sizeof(*txndata)); txndata->ssn = ssndata; txndata->txnp = txnp; rc = ib_tx_create(&txndata->tx, ssndata->iconn, txndata); if (rc != IB_OK) { TSError("[ironbee] Failed to create tx: %d", rc); tsib_manager_engine_release(ib); TSfree(txndata); goto noib_error; } ++ssndata->txn_count; ib_log_debug_tx(txndata->tx, "TX CREATE: conn=%p tx=%p id=%s txn_count=%d", ssndata->iconn, txndata->tx, txndata->tx->id, txndata->ssn->txn_count); mycont = TSContCreate(ironbee_plugin, TSContMutexGet(contp)); TSContDataSet(mycont, txndata); TSHttpTxnHookAdd(txnp, TS_HTTP_TXN_CLOSE_HOOK, mycont); /* Hook to process responses */ TSHttpTxnHookAdd(txnp, TS_HTTP_READ_RESPONSE_HDR_HOOK, mycont); /* Hook to process requests */ TSHttpTxnHookAdd(txnp, TS_HTTP_PRE_REMAP_HOOK, mycont); /* Hook to process request headers when sent to the server. */ TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_REQUEST_HDR_HOOK, mycont); /* Create continuations for input and output filtering * to give them txn lifetime. */ txndata->in_data_cont = TSTransformCreate(in_data_event, txnp); TSContDataSet(txndata->in_data_cont, txndata); txndata->out_data_cont = TSTransformCreate(out_data_event, txnp); TSContDataSet(txndata->out_data_cont, txndata); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); return; noib_error: /* NULL txndata signals this to SEND_RESPONSE */ TSContDataSet(contp, NULL); TSError("[ironbee] Internal error initialising for transaction"); TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_RESPONSE_HDR_HOOK, contp); /* FIXME: check this. * Purpose is to ensure contp doesn't leak, but may not be right */ TSHttpTxnHookAdd(txnp, TS_HTTP_TXN_CLOSE_HOOK, contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_ERROR); return; }
/** * Plugin for the IronBee ATS. * * Handles some ATS events. * * @param[in,out] contp Pointer to the continuation * @param[in,out] event Event from ATS * @param[in,out] edata Event data * * @returns status */ int ironbee_plugin(TSCont contp, TSEvent event, void *edata) { ib_status_t rc; TSCont mycont; TSHttpTxn txnp = (TSHttpTxn) edata; TSHttpSsn ssnp = (TSHttpSsn) edata; tsib_txn_ctx *txndata; tsib_ssn_ctx *ssndata; tsib_hdr_outcome status; TSMutex ts_mutex = NULL; TSDebug("ironbee", "Entering ironbee_plugin with %d", event); switch (event) { /* CONNECTION */ case TS_EVENT_HTTP_SSN_START: /* start of connection */ /* But we can't initialize conn stuff here, because there's * no API to get the connection stuff required by ironbee * at this point. So instead, intercept the first TXN * * what we can and must do: create a new contp whose * lifetime is our ssn */ ts_mutex = TSMutexCreate(); mycont = TSContCreate(ironbee_plugin, ts_mutex); TSHttpSsnHookAdd (ssnp, TS_HTTP_TXN_START_HOOK, mycont); ssndata = TSmalloc(sizeof(*ssndata)); memset(ssndata, 0, sizeof(*ssndata)); /* The only failure here is EALLOC, and if that happens * we're ****ed anyway */ rc = ib_lock_create_malloc(&(ssndata->mutex)); assert(rc == IB_OK); ssndata->contp = mycont; ssndata->ts_mutex = ts_mutex; TSContDataSet(mycont, ssndata); TSHttpSsnHookAdd (ssnp, TS_HTTP_SSN_CLOSE_HOOK, mycont); TSHttpSsnReenable (ssnp, TS_EVENT_HTTP_CONTINUE); break; case TS_EVENT_HTTP_TXN_START: { /* start of Request */ /* First req on a connection, we set up conn stuff */ ib_status_t rc; ib_engine_t *ib = NULL; ssndata = TSContDataGet(contp); ib_lock_lock(ssndata->mutex); if (ssndata->iconn == NULL) { rc = tsib_manager_engine_acquire(&ib); if (rc == IB_DECLINED) { /* OK, this means the manager is disabled deliberately, * but otherwise all's well. So this TXN * gets processed without intervention from Ironbee * and is invisble when our SSN_CLOSE hook runs. */ ib_lock_unlock(ssndata->mutex); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); TSDebug("ironbee", "Decline from engine manager"); break; } else if (rc != IB_OK) { TSError("[ironbee] Failed to acquire engine: %s", ib_status_to_string(rc)); goto noib_error; } if (ib != NULL) { rc = ib_conn_create(ib, &ssndata->iconn, contp); if (rc != IB_OK) { TSError("[ironbee] ib_conn_create: %s", ib_status_to_string(rc)); tsib_manager_engine_release(ib); goto noib_error; } /* In the normal case, release the engine when the * connection's memory pool is destroyed */ rc = ib_mm_register_cleanup(ssndata->iconn->mm, cleanup_ib_connection, ib); if (rc != IB_OK) { TSError("[ironbee] ib_mm_register_cleanup: %s", ib_status_to_string(rc)); tsib_manager_engine_release(ib); goto noib_error; } TSDebug("ironbee", "CONN CREATE: conn=%p", ssndata->iconn); ssndata->txnp = txnp; ssndata->txn_count = ssndata->closing = 0; rc = ironbee_conn_init(ssndata); if (rc != IB_OK) { TSError("[ironbee] ironbee_conn_init: %s", ib_status_to_string(rc)); goto noib_error; } TSContDataSet(contp, ssndata); TSDebug("ironbee", "ironbee_plugin: ib_state_notify_conn_opened()"); rc = ib_state_notify_conn_opened(ib, ssndata->iconn); if (rc != IB_OK) { TSError("[ironbee] Failed to notify connection opened: %s", ib_status_to_string(rc)); } } else { /* Use TSError where there's no ib or tx */ TSError("Ironbee: No ironbee engine!"); goto noib_error; } } /* create a txn cont (request ctx) and tx */ txndata = TSmalloc(sizeof(*txndata)); memset(txndata, 0, sizeof(*txndata)); txndata->ssn = ssndata; txndata->txnp = txnp; rc = ib_tx_create(&txndata->tx, ssndata->iconn, txndata); if (rc != IB_OK) { TSError("[ironbee] Failed to create tx: %d", rc); tsib_manager_engine_release(ib); TSfree(txndata); goto noib_error; } ++ssndata->txn_count; ib_lock_unlock(ssndata->mutex); ib_log_debug_tx(txndata->tx, "TX CREATE: conn=%p tx=%p id=%s txn_count=%d", ssndata->iconn, txndata->tx, txndata->tx->id, txndata->ssn->txn_count); mycont = TSContCreate(ironbee_plugin, ssndata->ts_mutex); TSContDataSet(mycont, txndata); TSHttpTxnHookAdd(txnp, TS_HTTP_TXN_CLOSE_HOOK, mycont); /* Hook to process responses */ TSHttpTxnHookAdd(txnp, TS_HTTP_READ_RESPONSE_HDR_HOOK, mycont); /* Hook to process requests */ TSHttpTxnHookAdd(txnp, TS_HTTP_READ_REQUEST_HDR_HOOK, mycont); /* Create continuations for input and output filtering * to give them txn lifetime. */ txndata->in_data_cont = TSTransformCreate(in_data_event, txnp); TSContDataSet(txndata->in_data_cont, txndata); txndata->out_data_cont = TSTransformCreate(out_data_event, txnp); TSContDataSet(txndata->out_data_cont, txndata); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; noib_error: ib_lock_unlock(ssndata->mutex); /* NULL txndata signals this to SEND_RESPONSE */ mycont = TSContCreate(ironbee_plugin, ssndata->ts_mutex); TSContDataSet(mycont, NULL); TSError("[ironbee] Internal error initialising for transaction"); TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_RESPONSE_HDR_HOOK, mycont); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_ERROR); break; } /* HTTP RESPONSE */ case TS_EVENT_HTTP_READ_RESPONSE_HDR: txndata = TSContDataGet(contp); if (txndata->tx == NULL) { TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; } /* Feed ironbee the headers if not done already. */ if (!ib_flags_all(txndata->tx->flags, IB_TX_FRES_STARTED)) { status = process_hdr(txndata, txnp, &tsib_direction_server_resp); /* OK, if this was an HTTP 100 response, it's not the * response we're interested in. No headers have been * sent yet, and no data will be sent until we've * reached here again with the final response. */ if (status == HDR_HTTP_100) { TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; } // FIXME: Need to know if this fails as it (I think) means // that the response did not come from the server and // that ironbee should ignore it. /* I've not seen a fail here. AFAICT if either the origin * isn't responding or we're responding from cache. we * never reach here in the first place. */ } /* If ironbee signalled an error while processing request body data, * this is the first opportunity to divert to an errordoc */ if (HTTP_CODE(txndata->status)) { ib_log_debug_tx(txndata->tx, "HTTP code %d contp=%p", txndata->status, contp); TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_RESPONSE_HDR_HOOK, contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_ERROR); break; } /* If we're not going to inspect response body data * we can bring forward notification of response-end * so we're in time to respond with an errordoc if Ironbee * wants to block in the response phase. * * This currently fails. However, that appears to be because I * can't unset IB_TX_FINSPECT_RESBODY with InspectionEngineOptions */ if (!ib_flags_all(txndata->tx->flags, IB_TX_FINSPECT_RESBODY)) { if (!ib_flags_all(txndata->tx->flags, IB_TX_FRES_STARTED) ) { ib_state_notify_response_started(txndata->tx->ib, txndata->tx, NULL); } if (!ib_flags_all(txndata->tx->flags, IB_TX_FRES_FINISHED) ) { ib_state_notify_response_finished(txndata->tx->ib, txndata->tx); } /* Test again for Ironbee telling us to block */ if (HTTP_CODE(txndata->status)) { TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_RESPONSE_HDR_HOOK, contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_ERROR); break; } } /* Flag that we're too late to divert to an error response */ ib_tx_flags_set(txndata->tx, IB_TX_FCLIENTRES_STARTED); /* Normal execution. Add output filter to inspect response. */ TSHttpTxnHookAdd(txnp, TS_HTTP_RESPONSE_TRANSFORM_HOOK, txndata->out_data_cont); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; /* Hook for processing response headers. */ case TS_EVENT_HTTP_SEND_RESPONSE_HDR: txndata = TSContDataGet(contp); if (txndata == NULL) { /* Ironbee is unavailable to help with our response. */ internal_error_response(txnp); /* This contp isn't going through the normal flow. */ TSContDestroy(contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; } /* If ironbee has sent us into an error response then * we came here in our error path, with nonzero status. */ if (txndata->status != 0) { error_response(txnp, txndata); } /* Feed ironbee the headers if not done already. */ if (!ib_flags_all(txndata->tx->flags, IB_TX_FRES_STARTED)) { if (process_hdr(txndata, txnp, &tsib_direction_client_resp) != HDR_OK) { /* I think this is a shouldn't happen event, and that * if it does we have an ironbee bug or misconfiguration. * Log an error to catch if it happens in practice. */ ib_log_error_tx(txndata->tx, "process_hdr returned error in send_response_hdr event"); } } /* If there is an ironbee-generated response body, notify ironbee. * * NOTE: I do not see anywhere else to put this as the error body is * just a buffer and not delivered via normal IO channels, so * the error body will never get caught by an event. */ if ((txndata->status != 0) && (txndata->err_body != NULL)) { const char *data = txndata->err_body; size_t data_length = txndata->err_body_len; ib_log_debug_tx(txndata->tx, "error_response: calling ib_state_notify_response_body_data() %s:%d", __FILE__, __LINE__); ib_state_notify_response_body_data(txndata->tx->ib, txndata->tx, data, data_length); } TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; /* HTTP REQUEST */ case TS_EVENT_HTTP_READ_REQUEST_HDR: /* hook to examine output headers. They're not available yet */ TSHttpTxnHookAdd(txnp, TS_HTTP_PRE_REMAP_HOOK, contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; /* hook for processing incoming request/headers * The OS_DNS hook is an alternative here. */ case TS_EVENT_HTTP_PRE_REMAP: { int request_inspection_finished = 0; txndata = TSContDataGet(contp); assert ((txndata != NULL) && (txndata->tx != NULL)); status = process_hdr(txndata, txnp, &tsib_direction_client_req); if (HDR_OUTCOME_IS_HTTP_OR_ERROR(status, txndata)) { if (status == HDR_HTTP_STATUS) { ib_log_debug_tx(txndata->tx, "HTTP code %d contp=%p", txndata->status, contp); } else { /* Ironbee set a status we don't handle. * We returned EINVAL, but we also need housekeeping to * avoid a crash in modhtp and log something bad. */ ib_log_debug_tx(txndata->tx, "Internal error %d contp=%p", txndata->status, contp); /* Ugly hack: notifications to stop modhtp bombing out */ request_inspection_finished = 1; } } else { /* Other nonzero statuses not supported */ switch(status) { case HDR_OK: /* If we're not inspecting the Request body, * we can bring forward notification of end-request * so any header-only tests run on Request phase * can abort the tx before opening a backend connection. */ if (!ib_flags_all(txndata->tx->flags, IB_TX_FINSPECT_REQBODY)) { request_inspection_finished = 1; } break; /* All's well */ case HDR_HTTP_STATUS: // FIXME: should we take the initiative here and return 500? ib_log_error_tx(txndata->tx, "Internal error: ts-ironbee requested error but no error response set."); break; case HDR_HTTP_100: /* This can't actually happen with current Trafficserver * versions, as TS will generate a 400 error without * reference to us. But in case that changes in future ... */ ib_log_error_tx(txndata->tx, "No request headers found."); break; default: ib_log_error_tx(txndata->tx, "Unhandled state arose in handling request headers."); break; } } if (request_inspection_finished) { if (!ib_flags_all(txndata->tx->flags, IB_TX_FREQ_STARTED) ) { ib_state_notify_request_started(txndata->tx->ib, txndata->tx, NULL); } if (!ib_flags_all(txndata->tx->flags, IB_TX_FREQ_FINISHED) ) { ib_state_notify_request_finished(txndata->tx->ib, txndata->tx); } } else { /* hook an input filter to watch data */ TSHttpTxnHookAdd(txnp, TS_HTTP_REQUEST_TRANSFORM_HOOK, txndata->in_data_cont); } /* Flag that we can no longer prevent a request going to backend */ ib_tx_flags_set(txndata->tx, IB_TX_FSERVERREQ_STARTED); /* Check whether Ironbee told us to block the request. * This could now come not just from process_hdr, but also * from a brought-forward notification if we aren't inspecting * a request body and notified request_finished. */ if (HTTP_CODE(txndata->status)) { TSHttpTxnHookAdd(txnp, TS_HTTP_SEND_RESPONSE_HDR_HOOK, contp); TSHttpTxnReenable(txnp, TS_EVENT_HTTP_ERROR); } else { TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); } break; } /* CLEANUP EVENTS */ case TS_EVENT_HTTP_TXN_CLOSE: { txndata = TSContDataGet(contp); TSContDestroy(txndata->out_data_cont); TSContDestroy(txndata->in_data_cont); TSContDataSet(contp, NULL); TSContDestroy(contp); if ( (txndata != NULL) && (txndata->tx != NULL) ) { ib_log_debug_tx(txndata->tx, "TXN Close: %p", (void *)contp); tsib_txn_ctx_destroy(txndata); } TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); break; } case TS_EVENT_HTTP_SSN_CLOSE: TSDebug("ironbee", "SSN Close: %p", (void *)contp); tsib_ssn_ctx_destroy(TSContDataGet(contp)); tsib_manager_engine_cleanup(); TSHttpSsnReenable(ssnp, TS_EVENT_HTTP_CONTINUE); break; case TS_EVENT_MGMT_UPDATE: { TSDebug("ironbee", "Management update"); ib_status_t rc; rc = tsib_manager_engine_create(); if (rc != IB_OK) { TSError("[ironbee] Error creating new engine: %s", ib_status_to_string(rc)); } break; } /* if we get here we've got a bug */ default: TSError("[ironbee] *** Unhandled event %d in ironbee_plugin.", event); break; } return 0; }
ib_status_t ib_action_inst_create( ib_action_inst_t **act_inst, ib_mm_t mm, ib_context_t *ctx, const char *action_name, const char *parameters ) { assert(action_name != NULL); assert(act_inst != NULL); assert(ctx != NULL); assert(ctx->ib != NULL); const ib_action_t *action; ib_action_inst_t *local_action_inst = NULL; ib_status_t rc; rc = ib_action_lookup(ctx->ib, action_name, strlen(action_name), &action); if (rc != IB_OK) { return rc; } local_action_inst = (ib_action_inst_t *)ib_mm_alloc(mm, sizeof(*local_action_inst)); if (local_action_inst == NULL) { return IB_EALLOC; } if (parameters != NULL) { local_action_inst->parameters = ib_mm_strdup(mm, parameters); if (local_action_inst->parameters == NULL) { return IB_EALLOC; } } else { local_action_inst->parameters = NULL; } local_action_inst->action = action; if (action->create_fn == NULL) { local_action_inst->instance_data = NULL; } else { rc = action->create_fn( mm, ctx, parameters, &(local_action_inst->instance_data), action->create_cbdata ); if (rc != IB_OK) { return rc; } } if (action->destroy_fn != NULL) { /* Register the destroy function. */ rc = ib_mm_register_cleanup(mm, cleanup_action, local_action_inst); if (rc != IB_OK) { return rc; } } *act_inst = local_action_inst; return IB_OK; }
/** * Process data from ATS. * * Process data from one of the ATS events. * * @param[in,out] contp - the continuation * @param[in,out] ibd - the filter descriptor */ static void process_data(TSCont contp, ibd_ctx *ibd) { int64_t ntodo; int64_t navail; TSIOBufferReader input_reader, output_reader; TSIOBufferBlock block; const char *buf; int64_t nbytes; ib_status_t rc; ib_filter_ctx *fctx = ibd->data; ib_txn_ctx *data = TSContDataGet(contp); TSVIO input_vio = TSVConnWriteVIOGet(contp); TSIOBuffer in_buf = TSVIOBufferGet(input_vio); /* Test whether we're going into an errordoc */ if (IB_HTTP_CODE(data->status)) { /* We're going to an error document, * so we discard all this data */ TSDebug("ironbee", "Status is %d, discarding", data->status); ibd->data->buffering = IOBUF_DISCARD; } /* Test for EOS */ if (in_buf == NULL) { /* flush anything we have buffered. This is final! */ flush_data(fctx, -1, 1); return; } ntodo = TSVIONTodoGet(input_vio); /* Test for first time, and initialise. */ if (!fctx->output_buffer) { fctx->output_buffer = TSIOBufferCreate(); ib_mm_register_cleanup(data->tx->mm, (ib_mm_cleanup_fn_t) TSIOBufferDestroy, (void*) fctx->output_buffer); output_reader = TSIOBufferReaderAlloc(fctx->output_buffer); fctx->output_vio = TSVConnWrite(TSTransformOutputVConnGet(contp), contp, output_reader, TSVIONBytesGet(input_vio)); fctx->buffer = TSIOBufferCreate(); ib_mm_register_cleanup(data->tx->mm, (ib_mm_cleanup_fn_t) TSIOBufferDestroy, (void*) fctx->buffer); fctx->reader = TSIOBufferReaderAlloc(fctx->buffer); /* Get the buffering config */ if (!IB_HTTP_CODE(data->status)) { buffer_init(ibd, data->tx); } /* Do we still have to delay feeding the first data to Ironbee * to keep the IB events in their proper order? * * Appears maybe not, so let's do nothing until it shows signs of breakage. */ #if BUFFER_FIRST /* First time through we can only buffer data until headers are sent. */ fctx->first_time = 1; input_reader = TSVIOReaderGet(input_vio); fctx->buffered = TSIOBufferCopy(fctx->buffer, TSVIOReaderGet(input_vio), ntodo, 0); TSIOBufferReaderConsume(input_reader, fctx->buffered); /* Do we need to request more input or just continue? */ TSVIONDoneSet(input_vio, fctx->buffu`ered + fctx->bytes_done); TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_READY, input_vio); return; #endif } /* second time through we have to feed already-buffered data through * ironbee while retaining it in buffer. Regardless of what else happens. */ #if BUFFER_FIRST if (fctx->first_time) { fctx->first_time = 0; for (block = TSIOBufferStart(fctx->buffer); block != NULL; block = TSIOBufferBlockNext(block)) { //nbytes = TSIOBufferBlockDataSizeGet(block); /* FIXME - do this without a reader ? */ buf = TSIOBufferBlockReadStart(block, fctx->reader, &nbytes); //rc = examine_data_chunk(ibd->ibd, data->tx, buf, nbytes); rc = (*ibd->ibd->ib_notify_body)(data->tx->ib, data->tx, buf, nbytes); if (rc != IB_OK) { // FIXME ??? } } } #endif /* Test for EOS */ if (ntodo == 0) { TSDebug("[ironbee]", "ntodo zero before consuming data"); /* Call back the input VIO continuation to let it know that we * have completed the write operation. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_COMPLETE, input_vio); return; } /* OK, there's some input awaiting our attention */ input_reader = TSVIOReaderGet(input_vio); while (navail = TSIOBufferReaderAvail(input_reader), navail > 0) { block = TSIOBufferReaderStart(input_reader); buf = TSIOBufferBlockReadStart(block, input_reader, &nbytes); rc = (*ibd->ibd->ib_notify_body)(data->tx->ib, data->tx, buf, nbytes); if (rc != IB_OK) { // FIXME ??? } rc = buffer_data_chunk(fctx, input_reader, nbytes); if (rc != IB_OK) { // FIXME ??? } TSIOBufferReaderConsume(input_reader, nbytes); TSVIONDoneSet(input_vio, TSVIONDoneGet(input_vio) + nbytes); } ntodo = TSVIONTodoGet(input_vio); if (ntodo == 0) { TSDebug("[ironbee]", "ntodo zero after consuming data"); /* Call back the input VIO continuation to let it know that we * have completed the write operation. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_COMPLETE, input_vio); } else { /* Call back the input VIO continuation to let it know that we * are ready for more data. */ TSContCall(TSVIOContGet(input_vio), TS_EVENT_VCONN_WRITE_READY, input_vio); } }