2 * Copyright (c) 1998,1999 Martin Husemann. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the author nor the names of any co-contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 * 4. Altered versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software and/or documentation.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 *---------------------------------------------------------------------------
33 * i4b daemon - network monitor server module
34 * ------------------------------------------
36 * $Id: monitor.c,v 1.30 2000/10/09 12:53:29 hm Exp $
38 * $FreeBSD: src/usr.sbin/i4b/isdnd/monitor.c,v 1.6.2.2 2001/08/01 17:45:03 obrien Exp $
40 * last edit-date: [Mon Dec 13 21:47:44 1999]
42 *---------------------------------------------------------------------------*/
46 #ifndef I4B_EXTERNAL_MONITOR
49 * dummy version of routines needed by config file parser
50 * (config files should be valid with and without external montioring
51 * support compiled into the daemon)
54 void monitor_clear_rights()
57 int monitor_start_rights(const char *clientspec)
60 void monitor_add_rights(int rights_mask)
63 void monitor_fixup_rights()
69 #include <sys/socket.h>
71 #ifndef I4B_NOTCPIP_MONITOR
72 #include <netinet/in.h>
73 #include <arpa/inet.h>
78 static TAILQ_HEAD(rights_q, monitor_rights) rights = TAILQ_HEAD_INITIALIZER(rights);
80 static struct monitor_rights * local_rights = NULL; /* entry for local socket */
82 /* for each active monitor connection we have one of this: */
84 struct monitor_connection {
85 TAILQ_ENTRY(monitor_connection) connections;
86 int sock; /* socket for this connection */
87 int rights; /* active rights for this connection */
88 int events; /* bitmask of events client is interested in */
89 char source[FILENAME_MAX];
92 static TAILQ_HEAD(connections_tq, monitor_connection) connections = TAILQ_HEAD_INITIALIZER(connections);
94 /* local prototypes */
95 static int cmp_rights(const struct monitor_rights *pa, const struct monitor_rights *pb);
96 static int monitor_command(struct monitor_connection *con, int fd, int rights);
97 static void cmd_dump_rights(int fd, int rights, u_int8_t *cmd, const char * source);
98 static void cmd_dump_mcons(int fd, int rights, u_int8_t *cmd, const char * source);
99 static void cmd_reread_cfg(int fd, int rights, u_int8_t *cmd, const char * source);
100 static void cmd_hangup(int fd, int rights, u_int8_t *cmd, const char * source);
101 static void monitor_broadcast(int mask, u_int8_t *pkt, size_t bytes);
102 static int anybody(int mask);
103 static void hangup_channel(int controller, int channel, const char *source);
104 static ssize_t sock_read(int fd, void *buf, size_t nbytes);
105 static ssize_t sock_write(int fd, void *buf, size_t nbytes);
108 * Due to the way we structure config files, the rights for an external
109 * monitor might be stated in multiple steps. First a call to
110 * monitor_start_rights opens an entry. Further (optional) calls to
111 * montior_add_rights assemble additional rights for this "current"
112 * entry. When closing the sys-file section of the config file, the
113 * "current" entry becomes invalid.
115 static struct monitor_rights * cur_add_entry = NULL;
117 /*---------------------------------------------------------------------------
118 * Initialize the monitor server module. This affects only active
119 * connections, the access rights are not modified here!
120 *---------------------------------------------------------------------------*/
124 struct monitor_connection * con;
126 while ((con = TAILQ_FIRST(&connections)) != NULL)
128 TAILQ_REMOVE(&connections, con, connections);
133 /*---------------------------------------------------------------------------
135 *---------------------------------------------------------------------------*/
139 struct monitor_connection *c;
141 /* Close all open connections. */
142 while((c = TAILQ_FIRST(&connections)) != NULL) {
144 TAILQ_REMOVE(&connections, c, connections);
149 /*---------------------------------------------------------------------------
150 * Initialize access rights. No active connections are affected!
151 *---------------------------------------------------------------------------*/
153 monitor_clear_rights(void)
155 struct monitor_rights *r;
156 while ((r = TAILQ_FIRST(&rights)) != NULL) {
157 TAILQ_REMOVE(&rights, r, list);
160 cur_add_entry = NULL;
164 /*---------------------------------------------------------------------------
165 * Add an entry to the access lists. The clientspec either is
166 * the name of the local socket or a host- or networkname or
167 * numeric ip/host-bit-len spec.
168 *---------------------------------------------------------------------------*/
170 monitor_start_rights(const char *clientspec)
172 struct monitor_rights r;
174 /* initialize the new rights entry */
176 memset(&r, 0, sizeof r);
178 /* check clientspec */
180 if (*clientspec == '/')
182 struct sockaddr_un sa;
184 /* this is a local socket spec, check if we already have one */
186 if (local_rights != NULL)
189 /* does it fit in a local socket address? */
191 if (strlen(clientspec) > sizeof sa.sun_path)
192 return I4BMAR_LENGTH;
195 strcpy(r.name, clientspec);
197 #ifndef I4B_NOTCPIP_MONITOR
202 /* remote entry, parse host/net and cidr */
204 struct monitor_rights * rp;
205 char hostname[FILENAME_MAX];
208 p = strchr(clientspec, '/');
212 struct hostent *host;
215 /* must be a host spec */
218 host = gethostbyname(clientspec);
223 memcpy(&hn, host->h_addr_list[0], sizeof hn);
224 r.net = (u_int32_t)ntohl(hn);
228 /* must be net/cidr spec */
233 int num = strtol(p+1, NULL, 10);
235 if (num < 0 || num > 32)
242 if (l >= sizeof hostname)
243 return I4BMAR_LENGTH;
245 strncpy(hostname, clientspec, l);
249 net = getnetbyname(hostname);
252 r.net = (u_int32_t)inet_network(hostname);
254 r.net = (u_int32_t)net->n_net;
264 /* check for duplicate entry */
266 for (rp = TAILQ_FIRST(&rights); rp != NULL; rp = TAILQ_NEXT(rp, list))
268 if (rp->mask == r.mask &&
270 rp->local == r.local)
280 /* entry ok, add it to the collection */
282 cur_add_entry = malloc(sizeof(r));
283 memcpy(cur_add_entry, &r, sizeof(r));
284 TAILQ_INSERT_TAIL(&rights, cur_add_entry, list);
287 local_rights = cur_add_entry;
289 DBGL(DL_RCCF, (log(LL_DBG, "system: monitor = %s", clientspec)));
294 /*---------------------------------------------------------------------------
295 * Add rights to the currently constructed entry - if any.
296 *---------------------------------------------------------------------------*/
298 monitor_add_rights(int rights_mask)
300 if(cur_add_entry == NULL)
301 return; /* noone under construction */
303 cur_add_entry->rights |= rights_mask;
305 DBGL(DL_RCCF, (log(LL_DBG, "system: monitor-access = 0x%x", rights_mask)));
308 /*---------------------------------------------------------------------------
309 * All rights have been added now. Sort the to get most specific
310 * host/net masks first, so we can travel the list and use the first
311 * match for actual rights.
312 *---------------------------------------------------------------------------*/
314 monitor_fixup_rights(void)
316 struct monitor_rights * cur, * test, * next;
318 /* no more rights may be added to the current entry */
320 cur_add_entry = NULL;
322 /* sort the rights */
323 for (next = NULL, cur = TAILQ_FIRST(&rights); cur != NULL; cur = next)
325 next = TAILQ_NEXT(cur, list);
326 for (test = TAILQ_FIRST(&rights); test != NULL && test != cur; test = TAILQ_NEXT(test, list))
328 if (cmp_rights(cur, test) > 0) {
329 /* move cur up the list and insert before test */
330 TAILQ_REMOVE(&rights, cur, list);
331 if (test == TAILQ_FIRST(&rights))
332 TAILQ_INSERT_HEAD(&rights, cur, list);
334 TAILQ_INSERT_BEFORE(test, cur, list);
341 /*---------------------------------------------------------------------------
342 * comparator for rights
343 *---------------------------------------------------------------------------*/
345 cmp_rights(const struct monitor_rights *pa, const struct monitor_rights *pb)
349 /* local sorts first */
354 /* which is the less specific netmask? */
358 if ((pb->mask & mask) == 0)
361 /* are the entries disjunct? */
363 if ((pa->net & mask) != (pb->net & mask))
365 /* simply compare net part of address */
366 return ((pa->net & mask) < (pb->net & mask)) ? -1 : 1;
369 /* One entry is part of the others net. We already now "mask" is
370 * the netmask of the less specific (i.e. greater) one */
372 return (pa->mask == mask) ? 1 : -1;
375 #ifndef I4B_NOTCPIP_MONITOR
376 /*---------------------------------------------------------------------------
377 * Check if access rights for a remote socket are specified and
378 * create this socket. Return -1 otherwise.
379 *---------------------------------------------------------------------------*/
381 monitor_create_remote_socket(int portno)
383 struct sockaddr_in sa;
387 remotesockfd = socket(AF_INET, SOCK_STREAM, 0);
389 if(remotesockfd == -1)
391 log(LL_MER, "could not create remote monitor socket: %s", strerror(errno));
397 if(setsockopt(remotesockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof val))
399 log(LL_MER, "could not setsockopt: %s", strerror(errno));
403 memset(&sa, 0, sizeof sa);
404 sa.sin_len = sizeof sa;
405 sa.sin_family = AF_INET;
406 sa.sin_port = htons(portno);
407 sa.sin_addr.s_addr = htonl(INADDR_ANY);
409 if(bind(remotesockfd, (struct sockaddr *)&sa, sizeof sa) == -1)
411 log(LL_MER, "could not bind remote monitor socket to port %d: %s", portno, strerror(errno));
415 if(listen(remotesockfd, 0))
417 log(LL_MER, "could not listen on monitor socket: %s", strerror(errno));
421 return(remotesockfd);
425 /*---------------------------------------------------------------------------
426 * Check if access rights for a local socket are specified and
427 * create this socket. Return -1 otherwise.
428 *---------------------------------------------------------------------------*/
430 monitor_create_local_socket(void)
433 struct sockaddr_un sa;
435 /* check for a local entry */
437 if (local_rights == NULL)
440 /* create and setup socket */
442 s = socket(AF_LOCAL, SOCK_STREAM, 0);
446 log(LL_MER, "could not create local monitor socket, errno = %d", errno);
450 unlink(local_rights->name);
452 memset(&sa, 0, sizeof sa);
453 sa.sun_len = sizeof sa;
454 sa.sun_family = AF_LOCAL;
455 strcpy(sa.sun_path, local_rights->name);
457 if (bind(s, (struct sockaddr *)&sa, SUN_LEN(&sa)))
459 log(LL_MER, "could not bind local monitor socket [%s], errno = %d", local_rights->name, errno);
463 chmod(local_rights->name, 0500);
467 log(LL_MER, "could not listen on local monitor socket, errno = %d", errno);
474 /*---------------------------------------------------------------------------
475 * Prepare a fd_set for a select call. Add all our local
476 * filedescriptors to the set, increment max_fd if appropriate.
477 *---------------------------------------------------------------------------*/
479 monitor_prepselect(fd_set *selset, int *max_fd)
481 struct monitor_connection * con;
483 for (con = TAILQ_FIRST(&connections); con != NULL; con = TAILQ_NEXT(con, connections))
494 /*---------------------------------------------------------------------------
495 * Check if the result from a select call indicates something
497 *---------------------------------------------------------------------------*/
499 monitor_handle_input(fd_set *selset)
501 struct monitor_connection * con, * next;
503 for (next = NULL, con = TAILQ_FIRST(&connections); con != NULL; con = next)
506 next = TAILQ_NEXT(con, connections);
508 if (FD_ISSET(fd, selset))
510 /* handle command from this client */
512 if (monitor_command(con, fd, con->rights) != 0)
514 /* broken or closed connection */
516 char source[FILENAME_MAX];
518 strcpy(source, con->source);
519 TAILQ_REMOVE(&connections, con, connections);
521 log(LL_DMN, "monitor closed from %s", source );
526 /* all connections gone? */
528 if (TAILQ_FIRST(&connections) == NULL)
532 /*---------------------------------------------------------------------------
533 * Try new incoming connection on the given socket.
534 * Setup client descriptor and send initial data.
535 *---------------------------------------------------------------------------*/
537 monitor_handle_connect(int sockfd, int is_local)
539 struct monitor_connection *con;
540 struct monitor_rights *rp;
542 #ifndef I4B_NOTCPIP_MONITOR
543 struct sockaddr_in ia;
547 struct sockaddr_un ua;
548 u_int8_t idata[I4B_MON_IDATA_SIZE];
549 int fd = -1, s, i, r_mask, t_events;
550 char source[FILENAME_MAX];
552 /* accept the connection */
557 fd = accept(sockfd, (struct sockaddr *)&ua, &s);
558 strcpy(source, "local");
560 #ifndef I4B_NOTCPIP_MONITOR
567 fd = accept(sockfd, (struct sockaddr *)&ia, &s);
569 hp = gethostbyaddr((char *)&ia.sin_addr, 4, AF_INET);
572 snprintf(source, sizeof source, "%s (%s)", inet_ntoa(ia.sin_addr), inet_ntoa(ia.sin_addr));
574 snprintf(source, sizeof source, "%s (%s)", hp->h_name, inet_ntoa(ia.sin_addr));
576 memcpy(&ha, &ia.sin_addr.s_addr, sizeof ha);
582 /* check the access rights of this connection */
586 for (rp = TAILQ_FIRST(&rights); rp != NULL; rp = TAILQ_NEXT(rp, list))
596 #ifndef I4B_NOTCPIP_MONITOR
600 if((ha & rp->mask) == rp->net)
611 /* no rights - go away */
612 log(LL_MER, "monitor access denied from %s", source);
619 con = malloc(sizeof(struct monitor_connection));
620 memset(con, 0, sizeof *con);
621 TAILQ_INSERT_TAIL(&connections, con, connections);
623 con->rights = r_mask;
624 strcpy(con->source, source);
626 log(LL_DMN, "monitor opened from %s rights 0x%x", source, r_mask);
628 /* send initial data */
629 I4B_PREP_CMD(idata, I4B_MON_IDATA_CODE);
630 I4B_PUT_2B(idata, I4B_MON_IDATA_VERSMAJOR, MPROT_VERSION);
631 I4B_PUT_2B(idata, I4B_MON_IDATA_VERSMINOR, MPROT_REL);
632 I4B_PUT_2B(idata, I4B_MON_IDATA_NUMCTRL, ncontroller);
633 I4B_PUT_2B(idata, I4B_MON_IDATA_NUMENTR, nentries);
634 I4B_PUT_4B(idata, I4B_MON_IDATA_CLACCESS, r_mask);
636 if((sock_write(fd, idata, sizeof idata)) == -1)
638 log(LL_MER, "monitor_handle_connect: sock_write 1 error - %s", strerror(errno));
641 for (i = 0; i < ncontroller; i++)
643 u_int8_t ictrl[I4B_MON_ICTRL_SIZE];
645 I4B_PREP_CMD(ictrl, I4B_MON_ICTRL_CODE);
646 I4B_PUT_STR(ictrl, I4B_MON_ICTRL_NAME, name_of_controller(isdn_ctrl_tab[i].ctrl_type, isdn_ctrl_tab[i].card_type));
647 I4B_PUT_2B(ictrl, I4B_MON_ICTRL_BUSID, 0);
648 I4B_PUT_4B(ictrl, I4B_MON_ICTRL_FLAGS, 0);
649 I4B_PUT_4B(ictrl, I4B_MON_ICTRL_NCHAN, 2);
651 if((sock_write(fd, ictrl, sizeof ictrl)) == -1)
653 log(LL_MER, "monitor_handle_connect: sock_write 2 error - %s", strerror(errno));
658 /* send device names from entries */
660 for(i=0; i < nentries; i++) /* walk thru all entries */
662 u_int8_t ictrl[I4B_MON_IDEV_SIZE];
665 p = &cfg_entry_tab[i]; /* get ptr to enry */
667 snprintf(nbuf, sizeof(nbuf), "%s%d ", bdrivername(p->usrdevicename), p->usrdeviceunit);
669 I4B_PREP_CMD(ictrl, I4B_MON_IDEV_CODE);
670 /*XXX*/ I4B_PUT_2B(ictrl, I4B_MON_IDEV_STATE, 1);
671 I4B_PUT_STR(ictrl, I4B_MON_IDEV_NAME, nbuf);
673 if((sock_write(fd, ictrl, sizeof ictrl)) == -1)
675 log(LL_MER, "monitor_handle_connect: sock_write 3 error - %s", strerror(errno));
679 /*XXX*/ t_events = con->events;
680 /*XXX*/ con->events = -1;
682 /* current state of controller(s) */
684 for(i=0; i < ncontroller; i++)
686 monitor_evnt_tei(i, isdn_ctrl_tab[i].tei);
687 monitor_evnt_l12stat(i, LAYER_ONE, isdn_ctrl_tab[i].l1stat);
688 monitor_evnt_l12stat(i, LAYER_TWO, isdn_ctrl_tab[i].l2stat);
691 /* current state of entries */
693 for(i=0; i < nentries; i++)
695 cfg_entry_t *cep = &cfg_entry_tab[i];
697 if(cep->state == ST_CONNECTED)
699 monitor_evnt_connect(cep);
700 monitor_evnt_acct(cep);
701 monitor_evnt_charge(cep, cep->charge, 1);
705 /*XXX*/ con->events = t_events;
709 /*---------------------------------------------------------------------------
710 * dump all monitor rights
711 *---------------------------------------------------------------------------*/
713 cmd_dump_rights(int fd, int r_mask, u_int8_t *cmd, const char *source)
715 struct monitor_rights * r;
717 u_int8_t drini[I4B_MON_DRINI_SIZE];
718 u_int8_t dr[I4B_MON_DR_SIZE];
720 for (num_rights = 0, r = TAILQ_FIRST(&rights); r != NULL; r = TAILQ_NEXT(r, list))
723 I4B_PREP_EVNT(drini, I4B_MON_DRINI_CODE);
724 I4B_PUT_2B(drini, I4B_MON_DRINI_COUNT, num_rights);
726 if((sock_write(fd, drini, sizeof drini)) == -1)
728 log(LL_MER, "cmd_dump_rights: sock_write 1 error - %s", strerror(errno));
731 for (r = TAILQ_FIRST(&rights); r != NULL; r = TAILQ_NEXT(r, list))
733 I4B_PREP_EVNT(dr, I4B_MON_DR_CODE);
734 I4B_PUT_4B(dr, I4B_MON_DR_RIGHTS, r->rights);
735 I4B_PUT_4B(dr, I4B_MON_DR_NET, r->net);
736 I4B_PUT_4B(dr, I4B_MON_DR_MASK, r->mask);
737 I4B_PUT_1B(dr, I4B_MON_DR_LOCAL, r->local);
738 if((sock_write(fd, dr, sizeof dr)) == -1)
740 log(LL_MER, "cmd_dump_rights: sock_write 2 error - %s", strerror(errno));
745 /*---------------------------------------------------------------------------
747 *---------------------------------------------------------------------------*/
749 cmd_reread_cfg(int fd, int rights, u_int8_t *cmd, const char * source)
754 /*---------------------------------------------------------------------------
755 * drop one connection
756 *---------------------------------------------------------------------------*/
758 cmd_hangup(int fd, int rights, u_int8_t *cmd, const char * source)
760 int channel = I4B_GET_4B(cmd, I4B_MON_HANGUP_CHANNEL);
761 int ctrl = I4B_GET_4B(cmd, I4B_MON_HANGUP_CTRL);
763 hangup_channel(ctrl, channel, source);
766 /*---------------------------------------------------------------------------
767 * dump all active monitor connections
768 *---------------------------------------------------------------------------*/
770 cmd_dump_mcons(int fd, int rights, u_int8_t *cmd, const char * source)
773 struct monitor_connection *con;
774 u_int8_t dcini[I4B_MON_DCINI_SIZE];
776 for (num_connections = 0, con = TAILQ_FIRST(&connections); con != NULL; con = TAILQ_NEXT(con, connections))
779 I4B_PREP_EVNT(dcini, I4B_MON_DCINI_CODE);
780 I4B_PUT_2B(dcini, I4B_MON_DCINI_COUNT, num_connections);
782 if((sock_write(fd, dcini, sizeof dcini)) == -1)
784 log(LL_MER, "cmd_dump_mcons: sock_write 1 error - %s", strerror(errno));
787 for (con = TAILQ_FIRST(&connections); con != NULL; con = TAILQ_NEXT(con, connections))
789 #ifndef I4B_NOTCPIP_MONITOR
791 struct sockaddr_in name;
793 u_int8_t dc[I4B_MON_DC_SIZE];
795 I4B_PREP_EVNT(dc, I4B_MON_DC_CODE);
796 I4B_PUT_4B(dc, I4B_MON_DC_RIGHTS, con->rights);
798 #ifndef I4B_NOTCPIP_MONITOR
799 namelen = sizeof name;
801 if (getpeername(con->sock, (struct sockaddr*)&name, &namelen) == 0)
802 memcpy(dc+I4B_MON_DC_WHO, &name.sin_addr, sizeof name.sin_addr);
804 if((sock_write(fd, dc, sizeof dc)) == -1)
806 log(LL_MER, "cmd_dump_mcons: sock_write 2 error - %s", strerror(errno));
811 /*---------------------------------------------------------------------------
812 * Handle a command from the given socket. The client
813 * has rights as specified in the rights parameter.
814 * Return non-zero if connection is closed.
815 *---------------------------------------------------------------------------*/
817 monitor_command(struct monitor_connection * con, int fd, int rights)
819 char cmd[I4B_MAX_MON_CLIENT_CMD];
822 /* command dispatch table */
823 typedef void (*cmd_func_t)(int fd, int rights, u_int8_t *cmd, const char *source);
826 cmd_func_t call; /* function to execute */
827 u_int rights; /* necessary rights */
831 /* 1 */ { cmd_dump_rights, I4B_CA_COMMAND_FULL },
832 /* 2 */ { cmd_dump_mcons, I4B_CA_COMMAND_FULL },
833 /* 3 */ { cmd_reread_cfg, I4B_CA_COMMAND_FULL },
834 /* 4 */ { cmd_hangup, I4B_CA_COMMAND_FULL },
836 #define NUMCMD (sizeof cmd_tab / sizeof cmd_tab[0])
841 /* Network transfer may deliver two or more packets concatenated.
842 * Peek at the header and read only one event at a time... */
844 ioctl(fd, FIONREAD, &u);
846 if (u < I4B_MON_CMD_HDR)
850 /* log(LL_MER, "monitor read 0 bytes"); */
851 /* socket closed by peer */
855 return 0; /* not enough data there yet */
858 bytes = recv(fd, cmd, I4B_MON_CMD_HDR, MSG_PEEK);
860 if (bytes < I4B_MON_CMD_HDR)
862 log(LL_MER, "monitor read only %d bytes", bytes);
863 return 0; /* errh? something must be wrong... */
866 bytes = I4B_GET_2B(cmd, I4B_MON_CMD_LEN);
868 if (bytes >= sizeof cmd)
871 log(LL_MER, "monitor: garbage on connection");
875 /* now we know the size, it fits, so lets read it! */
877 if(sock_read(fd, cmd, bytes) <= 0)
879 log(LL_MER, "monitor: sock_read <= 0");
885 code = I4B_GET_2B(cmd, I4B_MON_CMD);
887 /* special case: may modify our connection descriptor, is
888 * beyound all rights checks */
890 if (code == I4B_MON_CCMD_SETMASK)
894 u_int major = I4B_GET_2B(cmd, I4B_MON_ICLIENT_VERMAJOR);
895 u_int minor = I4B_GET_2B(cmd, I4B_MON_ICLIENT_VERMINOR);
898 int events = I4B_GET_4B(cmd, I4B_MON_ICLIENT_EVENTS);
899 con->events = events & rights;
903 if (code < 0 || code >= NUMCMD)
905 log(LL_MER, "illegal command from client, code = %d\n",
910 if (cmd_tab[code].call == NULL)
913 if ((cmd_tab[code].rights & rights) == cmd_tab[code].rights)
914 cmd_tab[code].call(fd, rights, cmd, con->source);
919 /*---------------------------------------------------------------------------
920 * Check if somebody would receive an event with this mask.
921 * We are lazy and try to avoid assembling unneccesary packets.
922 * Return 0 if no one interested, nonzero otherwise.
923 *---------------------------------------------------------------------------*/
927 struct monitor_connection * con;
929 for (con = TAILQ_FIRST(&connections); con != NULL; con = TAILQ_NEXT(con, connections))
931 if ((con->events & mask) == mask)
937 /*---------------------------------------------------------------------------
938 * exec hangup command
939 *---------------------------------------------------------------------------*/
941 hangup_channel(int controller, int channel, const char *source)
943 cfg_entry_t * cep = NULL;
946 if(controller < ncontroller)
948 if(isdn_ctrl_tab[controller].state != CTRL_UP)
950 for (i = 0; i < isdn_ctrl_tab[controller].nbch; i++)
952 if(isdn_ctrl_tab[controller].stateb[i] != CHAN_IDLE)
954 cep = get_cep_by_cc(controller, i);
955 if (cep != NULL && cep->isdnchannelused == channel &&
956 cep->isdncontrollerused == controller)
965 log(LL_CHD, "%05d %s manual disconnect (remote from %s)", cep->cdid, cep->name, source);
970 /*---------------------------------------------------------------------------
971 * Send an event to every connection interested in this kind of
973 *---------------------------------------------------------------------------*/
975 monitor_broadcast(int mask, u_int8_t *pkt, size_t bytes)
977 struct monitor_connection *con;
979 for (con = TAILQ_FIRST(&connections); con != NULL; con = TAILQ_NEXT(con, connections))
981 if ((con->events & mask) == mask)
985 if((sock_write(fd, pkt, bytes)) == -1)
987 log(LL_MER, "monitor_broadcast: sock_write error - %s", strerror(errno));
993 /*---------------------------------------------------------------------------
994 * Post a logfile event
995 *---------------------------------------------------------------------------*/
997 monitor_evnt_log(int prio, const char * what, const char * msg)
999 u_int8_t evnt[I4B_MON_LOGEVNT_SIZE];
1002 if (!anybody(I4B_CA_EVNT_I4B))
1007 I4B_PREP_EVNT(evnt, I4B_MON_LOGEVNT_CODE);
1008 I4B_PUT_4B(evnt, I4B_MON_LOGEVNT_TSTAMP, (long)now);
1009 I4B_PUT_4B(evnt, I4B_MON_LOGEVNT_PRIO, prio);
1010 I4B_PUT_STR(evnt, I4B_MON_LOGEVNT_WHAT, what);
1011 I4B_PUT_STR(evnt, I4B_MON_LOGEVNT_MSG, msg);
1013 monitor_broadcast(I4B_CA_EVNT_I4B, evnt, sizeof evnt);
1016 /*---------------------------------------------------------------------------
1017 * Post a charging event on the connection described
1018 * by the given config entry.
1019 *---------------------------------------------------------------------------*/
1021 monitor_evnt_charge(cfg_entry_t *cep, int units, int estimate)
1025 u_int8_t evnt[I4B_MON_CHRG_SIZE];
1027 mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
1034 I4B_PREP_EVNT(evnt, I4B_MON_CHRG_CODE);
1035 I4B_PUT_4B(evnt, I4B_MON_CHRG_TSTAMP, (long)now);
1036 I4B_PUT_4B(evnt, I4B_MON_CHRG_CTRL, cep->isdncontrollerused);
1037 I4B_PUT_4B(evnt, I4B_MON_CHRG_CHANNEL, cep->isdnchannelused);
1038 I4B_PUT_4B(evnt, I4B_MON_CHRG_UNITS, units);
1039 I4B_PUT_4B(evnt, I4B_MON_CHRG_ESTIMATED, estimate ? 1 : 0);
1041 monitor_broadcast(mask, evnt, sizeof evnt);
1044 /*---------------------------------------------------------------------------
1045 * Post a connection event
1046 *---------------------------------------------------------------------------*/
1048 monitor_evnt_connect(cfg_entry_t *cep)
1050 u_int8_t evnt[I4B_MON_CONNECT_SIZE];
1051 char devname[I4B_MAX_MON_STRING];
1055 mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
1062 snprintf(devname, sizeof devname, "%s%d", bdrivername(cep->usrdevicename), cep->usrdeviceunit);
1064 I4B_PREP_EVNT(evnt, I4B_MON_CONNECT_CODE);
1065 I4B_PUT_4B(evnt, I4B_MON_CONNECT_TSTAMP, (long)now);
1066 I4B_PUT_4B(evnt, I4B_MON_CONNECT_DIR, cep->direction == DIR_OUT ? 1 : 0);
1067 I4B_PUT_4B(evnt, I4B_MON_CONNECT_CTRL, cep->isdncontrollerused);
1068 I4B_PUT_4B(evnt, I4B_MON_CONNECT_CHANNEL, cep->isdnchannelused);
1069 I4B_PUT_STR(evnt, I4B_MON_CONNECT_CFGNAME, cep->name);
1070 I4B_PUT_STR(evnt, I4B_MON_CONNECT_DEVNAME, devname);
1072 if(cep->direction == DIR_OUT)
1074 I4B_PUT_STR(evnt, I4B_MON_CONNECT_REMPHONE, cep->remote_phone_dialout);
1075 I4B_PUT_STR(evnt, I4B_MON_CONNECT_LOCPHONE, cep->local_phone_dialout);
1079 I4B_PUT_STR(evnt, I4B_MON_CONNECT_REMPHONE, cep->real_phone_incoming);
1080 I4B_PUT_STR(evnt, I4B_MON_CONNECT_LOCPHONE, cep->local_phone_incoming);
1082 monitor_broadcast(mask, evnt, sizeof evnt);
1085 /*---------------------------------------------------------------------------
1086 * Post a disconnect event
1087 *---------------------------------------------------------------------------*/
1089 monitor_evnt_disconnect(cfg_entry_t *cep)
1091 u_int8_t evnt[I4B_MON_DISCONNECT_SIZE];
1095 mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
1102 I4B_PREP_EVNT(evnt, I4B_MON_DISCONNECT_CODE);
1103 I4B_PUT_4B(evnt, I4B_MON_DISCONNECT_TSTAMP, (long)now);
1104 I4B_PUT_4B(evnt, I4B_MON_DISCONNECT_CTRL, cep->isdncontrollerused);
1105 I4B_PUT_4B(evnt, I4B_MON_DISCONNECT_CHANNEL, cep->isdnchannelused);
1107 monitor_broadcast(mask, evnt, sizeof evnt);
1110 /*---------------------------------------------------------------------------
1111 * Post an up/down event
1112 *---------------------------------------------------------------------------*/
1114 monitor_evnt_updown(cfg_entry_t *cep, int up)
1116 u_int8_t evnt[I4B_MON_UPDOWN_SIZE];
1120 mask = (cep->direction == DIR_IN) ? I4B_CA_EVNT_CALLIN : I4B_CA_EVNT_CALLOUT;
1127 I4B_PREP_EVNT(evnt, I4B_MON_UPDOWN_CODE);
1128 I4B_PUT_4B(evnt, I4B_MON_UPDOWN_TSTAMP, (long)now);
1129 I4B_PUT_4B(evnt, I4B_MON_UPDOWN_CTRL, cep->isdncontrollerused);
1130 I4B_PUT_4B(evnt, I4B_MON_UPDOWN_CHANNEL, cep->isdnchannelused);
1131 I4B_PUT_4B(evnt, I4B_MON_UPDOWN_ISUP, up);
1133 monitor_broadcast(mask, evnt, sizeof evnt);
1136 /*---------------------------------------------------------------------------
1137 * Post a Layer1/2 status change event
1138 *---------------------------------------------------------------------------*/
1140 monitor_evnt_l12stat(int controller, int layer, int state)
1142 u_int8_t evnt[I4B_MON_L12STAT_SIZE];
1145 if(!anybody(I4B_CA_EVNT_I4B))
1150 I4B_PREP_EVNT(evnt, I4B_MON_L12STAT_CODE);
1151 I4B_PUT_4B(evnt, I4B_MON_L12STAT_TSTAMP, (long)now);
1152 I4B_PUT_4B(evnt, I4B_MON_L12STAT_CTRL, controller);
1153 I4B_PUT_4B(evnt, I4B_MON_L12STAT_LAYER, layer);
1154 I4B_PUT_4B(evnt, I4B_MON_L12STAT_STATE, state);
1156 monitor_broadcast(I4B_CA_EVNT_I4B, evnt, sizeof evnt);
1159 /*---------------------------------------------------------------------------
1160 * Post a TEI change event
1161 *---------------------------------------------------------------------------*/
1163 monitor_evnt_tei(int controller, int tei)
1165 u_int8_t evnt[I4B_MON_TEI_SIZE];
1168 if(!anybody(I4B_CA_EVNT_I4B))
1173 I4B_PREP_EVNT(evnt, I4B_MON_TEI_CODE);
1174 I4B_PUT_4B(evnt, I4B_MON_TEI_TSTAMP, (long)now);
1175 I4B_PUT_4B(evnt, I4B_MON_TEI_CTRL, controller);
1176 I4B_PUT_4B(evnt, I4B_MON_TEI_TEI, tei);
1178 monitor_broadcast(I4B_CA_EVNT_I4B, evnt, sizeof evnt);
1181 /*---------------------------------------------------------------------------
1182 * Post an accounting event
1183 *---------------------------------------------------------------------------*/
1185 monitor_evnt_acct(cfg_entry_t *cep)
1187 u_int8_t evnt[I4B_MON_ACCT_SIZE];
1190 if(!anybody(I4B_CA_EVNT_I4B))
1195 I4B_PREP_EVNT(evnt, I4B_MON_ACCT_CODE);
1196 I4B_PUT_4B(evnt, I4B_MON_ACCT_TSTAMP, (long)now);
1198 I4B_PUT_4B(evnt, I4B_MON_ACCT_CTRL, cep->isdncontrollerused);
1199 I4B_PUT_4B(evnt, I4B_MON_ACCT_CHAN, cep->isdnchannelused);
1200 I4B_PUT_4B(evnt, I4B_MON_ACCT_OBYTES, cep->outbytes);
1201 I4B_PUT_4B(evnt, I4B_MON_ACCT_OBPS, cep->outbps);
1202 I4B_PUT_4B(evnt, I4B_MON_ACCT_IBYTES, cep->inbytes);
1203 I4B_PUT_4B(evnt, I4B_MON_ACCT_IBPS, cep->inbps);
1205 monitor_broadcast(I4B_CA_EVNT_I4B, evnt, sizeof evnt);
1208 /*---------------------------------------------------------------------------
1209 * read from a socket
1210 *---------------------------------------------------------------------------*/
1212 sock_read(int fd, void *buf, size_t nbytes)
1223 if((nread = read(fd, ptr, nleft)) < 0)
1242 return(nbytes - nleft);
1245 /*---------------------------------------------------------------------------
1247 *---------------------------------------------------------------------------*/
1249 sock_write(int fd, void *buf, size_t nbytes)
1260 if((nwritten = write(fd, ptr, nleft)) <= 0)
1278 struct monitor_rights * monitor_next_rights(const struct monitor_rights *r)
1281 return TAILQ_FIRST(&rights);
1283 return TAILQ_NEXT(r, list);
1286 #endif /* I4B_EXTERNAL_MONITOR */