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annotate mgw/ctrl_prot.c @ 34:7dae2bae56a1

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themwi-mgw: implement MDCX parameter validation
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 09 Jul 2022 23:17:15 -0800
parents b3f74df7b808
children 020ba624bdd8
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32
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * In this module we implement our control socket protocol.
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Mychaela Falconia <falcon@freecalypso.org>
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3 */
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Mychaela Falconia <falcon@freecalypso.org>
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4
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Mychaela Falconia <falcon@freecalypso.org>
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5 #include <sys/types.h>
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Mychaela Falconia <falcon@freecalypso.org>
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6 #include <sys/socket.h>
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Mychaela Falconia <falcon@freecalypso.org>
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7 #include <netinet/in.h>
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Mychaela Falconia <falcon@freecalypso.org>
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8 #include <stdio.h>
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Mychaela Falconia <falcon@freecalypso.org>
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9 #include <stdlib.h>
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include <strings.h>
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Mychaela Falconia <falcon@freecalypso.org>
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12 #include <syslog.h>
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Mychaela Falconia <falcon@freecalypso.org>
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13 #include <unistd.h>
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Mychaela Falconia <falcon@freecalypso.org>
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14 #include "../include/tmgw_ctrl.h"
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Mychaela Falconia <falcon@freecalypso.org>
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15 #include "struct.h"
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Mychaela Falconia <falcon@freecalypso.org>
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16 #include "select.h"
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Mychaela Falconia <falcon@freecalypso.org>
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17
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Mychaela Falconia <falcon@freecalypso.org>
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18 struct endpoint *
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Mychaela Falconia <falcon@freecalypso.org>
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19 find_ep_by_id(conn, id)
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Mychaela Falconia <falcon@freecalypso.org>
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20 struct ctrl_conn *conn;
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Mychaela Falconia <falcon@freecalypso.org>
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21 unsigned id;
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Mychaela Falconia <falcon@freecalypso.org>
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22 {
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Mychaela Falconia <falcon@freecalypso.org>
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23 struct endpoint *ep;
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Mychaela Falconia <falcon@freecalypso.org>
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24
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Mychaela Falconia <falcon@freecalypso.org>
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25 for (ep = conn->endp_list; ep; ep = ep->next)
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Mychaela Falconia <falcon@freecalypso.org>
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26 if (ep->ep_id == id)
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Mychaela Falconia <falcon@freecalypso.org>
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27 return ep;
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Mychaela Falconia <falcon@freecalypso.org>
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28 return 0;
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Mychaela Falconia <falcon@freecalypso.org>
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29 }
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Mychaela Falconia <falcon@freecalypso.org>
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30
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Mychaela Falconia <falcon@freecalypso.org>
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31 void
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Mychaela Falconia <falcon@freecalypso.org>
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32 ctrl_message_handler(fd, conn)
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Mychaela Falconia <falcon@freecalypso.org>
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33 struct ctrl_conn *conn;
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Mychaela Falconia <falcon@freecalypso.org>
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34 {
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Mychaela Falconia <falcon@freecalypso.org>
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35 struct tmgw_ctrl_req req;
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Mychaela Falconia <falcon@freecalypso.org>
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36 struct tmgw_ctrl_resp resp;
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Mychaela Falconia <falcon@freecalypso.org>
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37 int rc;
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Mychaela Falconia <falcon@freecalypso.org>
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38
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Mychaela Falconia <falcon@freecalypso.org>
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39 rc = recv(fd, &req, sizeof req, 0);
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Mychaela Falconia <falcon@freecalypso.org>
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40 if (rc < sizeof req) {
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Mychaela Falconia <falcon@freecalypso.org>
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41 syslog(LOG_INFO, "ctrl connection closing %s active endpoints",
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Mychaela Falconia <falcon@freecalypso.org>
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42 conn->endp_list ? "with" : "without");
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Mychaela Falconia <falcon@freecalypso.org>
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43 close(fd);
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Mychaela Falconia <falcon@freecalypso.org>
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44 FD_CLR(fd, &select_for_read);
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Mychaela Falconia <falcon@freecalypso.org>
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45 dlcx_all_on_conn(conn);
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Mychaela Falconia <falcon@freecalypso.org>
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46 free(conn);
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Mychaela Falconia <falcon@freecalypso.org>
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47 return;
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Mychaela Falconia <falcon@freecalypso.org>
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48 }
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Mychaela Falconia <falcon@freecalypso.org>
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49 bzero(&resp, sizeof resp);
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Mychaela Falconia <falcon@freecalypso.org>
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50 resp.transact_ref = req.transact_ref;
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Mychaela Falconia <falcon@freecalypso.org>
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51 switch (req.opcode) {
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Mychaela Falconia <falcon@freecalypso.org>
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52 case TMGW_CTRL_OP_CRCX:
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Mychaela Falconia <falcon@freecalypso.org>
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53 process_crcx(conn, &req, &resp);
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Mychaela Falconia <falcon@freecalypso.org>
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54 break;
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Mychaela Falconia <falcon@freecalypso.org>
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55 case TMGW_CTRL_OP_MDCX:
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Mychaela Falconia <falcon@freecalypso.org>
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56 process_mdcx(conn, &req, &resp);
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Mychaela Falconia <falcon@freecalypso.org>
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57 break;
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Mychaela Falconia <falcon@freecalypso.org>
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58 case TMGW_CTRL_OP_DLCX:
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Mychaela Falconia <falcon@freecalypso.org>
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59 process_dlcx(conn, &req, &resp);
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Mychaela Falconia <falcon@freecalypso.org>
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60 break;
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Mychaela Falconia <falcon@freecalypso.org>
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61 default:
34
7dae2bae56a1 themwi-mgw: implement MDCX parameter validation
Mychaela Falconia <falcon@freecalypso.org>
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62 resp.res = TMGW_RESP_ERR_OPCODE;
32
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Mychaela Falconia <falcon@freecalypso.org>
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63 }
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Mychaela Falconia <falcon@freecalypso.org>
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64 send(fd, &resp, sizeof resp, 0);
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Mychaela Falconia <falcon@freecalypso.org>
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65 }