325 lines
7.9 KiB
C
325 lines
7.9 KiB
C
/* C-Netz transaction handling
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*
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* (C) 2016 by Andreas Eversberg <jolly@eversberg.eu>
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "../libsample/sample.h"
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#include "../libdebug/debug.h"
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#include "../libmobile/call.h"
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#include "../libmncc/cause.h"
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#include "cnetz.h"
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#include "telegramm.h"
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#include "database.h"
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const char *transaction2rufnummer(transaction_t *trans)
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{
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static char rufnummer[32]; /* make GCC happy (overflow check) */
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sprintf(rufnummer, "%d%d%05d", trans->futln_nat, trans->futln_fuvst, trans->futln_rest);
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return rufnummer;
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}
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/* create transaction */
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transaction_t *create_transaction(cnetz_t *cnetz, uint64_t state, uint8_t futln_nat, uint8_t futln_fuvst, uint16_t futln_rest, int extended)
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{
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sender_t *sender;
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transaction_t *trans = NULL;
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cnetz_t *search_cnetz;
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/* search transaction for this subsriber */
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for (sender = sender_head; sender; sender = sender->next) {
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search_cnetz = (cnetz_t *) sender;
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/* search transaction for this callref */
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trans = search_transaction_number(search_cnetz, futln_nat, futln_fuvst, futln_rest);
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if (trans)
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break;
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}
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if (trans) {
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const char *rufnummer = transaction2rufnummer(trans);
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int old_callref = trans->callref;
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cnetz_t *old_cnetz = trans->cnetz;
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PDEBUG(DTRANS, DEBUG_NOTICE, "Found alredy pending transaction for subscriber '%s', deleting!\n", rufnummer);
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destroy_transaction(trans);
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if (old_cnetz) /* should be... */
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cnetz_go_idle(old_cnetz);
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if (old_callref)
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call_up_release(old_callref, CAUSE_NORMAL);
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}
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trans = calloc(1, sizeof(*trans));
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if (!trans) {
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PDEBUG(DTRANS, DEBUG_ERROR, "No memory!\n");
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return NULL;
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}
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timer_init(&trans->timer, transaction_timeout, trans);
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trans_new_state(trans, state);
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trans->futln_nat = futln_nat;
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trans->futln_fuvst = futln_fuvst;
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trans->futln_rest = futln_rest;
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if (state == TRANS_VWG)
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trans->mo_call = 1;
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if (state == TRANS_VAK || state == TRANS_WSK)
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trans->mt_call = 1;
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const char *rufnummer = transaction2rufnummer(trans);
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PDEBUG(DTRANS, DEBUG_INFO, "Created transaction for subscriber '%s'\n", rufnummer);
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link_transaction(trans, cnetz);
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/* update database: now busy */
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trans->extended = update_db(cnetz, futln_nat, futln_fuvst, futln_rest, extended, 1, 0);
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return trans;
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}
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/* destroy transaction */
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void destroy_transaction(transaction_t *trans)
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{
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/* update database: now idle */
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update_db(trans->cnetz, trans->futln_nat, trans->futln_fuvst, trans->futln_rest, -1, 0, trans->page_failed);
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unlink_transaction(trans);
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const char *rufnummer = transaction2rufnummer(trans);
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PDEBUG(DTRANS, DEBUG_INFO, "Destroying transaction for subscriber '%s'\n", rufnummer);
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timer_exit(&trans->timer);
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trans_new_state(trans, 0);
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free(trans);
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}
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/* link transaction to list */
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void link_transaction(transaction_t *trans, cnetz_t *cnetz)
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{
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transaction_t **transp;
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/* attach to end of list, so first transaction is served first */
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PDEBUG(DTRANS, DEBUG_DEBUG, "Linking transaction %p to cnetz %p\n", trans, cnetz);
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trans->cnetz = cnetz;
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trans->next = NULL;
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transp = &cnetz->trans_list;
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while (*transp)
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transp = &((*transp)->next);
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*transp = trans;
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cnetz_display_status();
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}
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/* unlink transaction from list */
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void unlink_transaction(transaction_t *trans)
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{
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transaction_t **transp;
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/* unlink */
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PDEBUG(DTRANS, DEBUG_DEBUG, "Unlinking transaction %p from cnetz %p\n", trans, trans->cnetz);
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transp = &trans->cnetz->trans_list;
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while (*transp && *transp != trans)
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transp = &((*transp)->next);
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if (!(*transp)) {
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PDEBUG(DTRANS, DEBUG_ERROR, "Transaction not in list, please fix!!\n");
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abort();
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}
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*transp = trans->next;
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trans->cnetz = NULL;
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cnetz_display_status();
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}
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transaction_t *search_transaction(cnetz_t *cnetz, uint64_t state_mask)
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{
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transaction_t *trans = cnetz->trans_list;
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while (trans) {
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if ((trans->state & state_mask)) {
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const char *rufnummer = transaction2rufnummer(trans);
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PDEBUG(DTRANS, DEBUG_DEBUG, "Found transaction for subscriber '%s'\n", rufnummer);
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return trans;
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}
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trans = trans->next;
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}
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return NULL;
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}
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transaction_t *search_transaction_number(cnetz_t *cnetz, uint8_t futln_nat, uint8_t futln_fuvst, uint16_t futln_rest)
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{
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transaction_t *trans = cnetz->trans_list;
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while (trans) {
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if (trans->futln_nat == futln_nat
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&& trans->futln_fuvst == futln_fuvst
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&& trans->futln_rest == futln_rest) {
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const char *rufnummer = transaction2rufnummer(trans);
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PDEBUG(DTRANS, DEBUG_DEBUG, "Found transaction for subscriber '%s'\n", rufnummer);
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return trans;
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}
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trans = trans->next;
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}
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return NULL;
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}
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transaction_t *search_transaction_callref(cnetz_t *cnetz, int callref)
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{
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transaction_t *trans = cnetz->trans_list;
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/* just in case, this should not happen */
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if (!callref)
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return NULL;
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while (trans) {
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if (trans->callref == callref) {
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const char *rufnummer = transaction2rufnummer(trans);
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PDEBUG(DTRANS, DEBUG_DEBUG, "Found transaction for subscriber '%s'\n", rufnummer);
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return trans;
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}
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trans = trans->next;
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}
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return NULL;
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}
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static const char *trans_state_name(uint64_t state)
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{
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switch (state) {
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case 0:
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return "IDLE";
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case TRANS_EM:
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return "EM";
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case TRANS_UM:
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return "UM";
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case TRANS_MA:
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return "MA";
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case TRANS_MFT:
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return "MFT";
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case TRANS_VWG:
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return "VWG";
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case TRANS_WAF:
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return "WAF";
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case TRANS_WBP:
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return "WBP";
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case TRANS_WBN:
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return "WBN";
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case TRANS_VAG:
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return "VAG";
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case TRANS_WSK:
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return "WSK";
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case TRANS_VAK:
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return "VAK";
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case TRANS_BQ:
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return "BQ";
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case TRANS_VHQ:
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return "VHQ";
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case TRANS_RTA:
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return "RTA";
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case TRANS_DS:
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return "DS";
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case TRANS_AHQ:
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return "AHQ";
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case TRANS_VA:
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return "VA";
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case TRANS_AF:
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return "AF";
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case TRANS_AT:
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return "AT";
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case TRANS_ATQ:
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return "ATQ";
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case TRANS_MO_QUEUE:
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return "MO_QUEUE";
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case TRANS_MT_QUEUE:
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return "MT_QUEUE";
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case TRANS_MO_DELAY:
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return "MO_DELAY";
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case TRANS_MT_DELAY:
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return "MT_DELAY";
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default:
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return "<invald transaction state>";
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}
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}
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const char *trans_short_state_name(uint64_t state)
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{
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switch (state) {
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case 0:
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return "IDLE";
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case TRANS_EM:
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case TRANS_UM:
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return "REGISTER";
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case TRANS_MA:
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case TRANS_MFT:
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return "PING";
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case TRANS_VWG:
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case TRANS_WAF:
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case TRANS_WBP:
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case TRANS_WBN:
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return "DIALING";
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case TRANS_VAG:
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case TRANS_WSK:
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case TRANS_VAK:
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case TRANS_BQ:
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case TRANS_VHQ:
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return "ASSIGN";
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case TRANS_RTA:
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return "ALERT";
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case TRANS_DS:
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return "DS";
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case TRANS_AHQ:
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return "AHQ";
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case TRANS_VA:
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case TRANS_AF:
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case TRANS_AT:
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case TRANS_ATQ:
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return "RELEASE";
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case TRANS_MO_QUEUE:
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case TRANS_MO_DELAY:
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return "OUT QUEUE";
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case TRANS_MT_QUEUE:
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case TRANS_MT_DELAY:
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return "IN QUEUE";
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default:
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return "<invald transaction state>";
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}
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}
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void trans_new_state(transaction_t *trans, uint64_t state)
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{
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PDEBUG(DTRANS, DEBUG_INFO, "Transaction (%s) state %s -> %s\n", transaction2rufnummer(trans), trans_state_name(trans->state), trans_state_name(state));
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trans->state = state;
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cnetz_display_status();
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}
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void cnetz_flush_other_transactions(cnetz_t *cnetz, transaction_t *trans)
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{
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/* flush after this very trans */
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while (trans->next) {
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PDEBUG(DTRANS, DEBUG_NOTICE, "Kicking other pending transaction\n");
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destroy_transaction(trans->next);
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}
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/* flush before this very trans */
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while (cnetz->trans_list != trans) {
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PDEBUG(DTRANS, DEBUG_NOTICE, "Kicking other pending transaction\n");
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destroy_transaction(cnetz->trans_list);
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}
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}
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