2 * Copyright (c) 1990,1996 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
14 #include <sys/signal.h>
16 #include <sys/types.h>
19 #include <sys/socket.h>
20 #include <sys/param.h>
21 #include <netatalk/at.h>
22 #include <atalk/compat.h>
23 #include <atalk/atp.h>
24 #include <atalk/pap.h>
26 #include <atalk/server_child.h>
27 #include "pap_child.h"
29 static PAP server_pap;
30 static struct server_child *children = NULL;
31 static struct pap_child **pap_ac = NULL;
33 /* send tickles and check tickle status of connections */
34 static void tickle_handler()
39 for (sid = 0; sid < children->nsessions; sid++) {
40 if (pap_ac[sid] == NULL || pap_ac[sid]->ac_state == ACSTATE_DEAD)
43 if (++pap_ac[sid]->ac_state >= ACSTATE_BAD) {
44 /* kill. if already dead, just continue */
45 if (kill( pap_ac[ sid ]->ac_pid, SIGTERM) == 0)
46 syslog( LOG_INFO, "pap_alrm: %d timed out",
47 pap_ac[ sid ]->ac_pid );
49 pap_ac[ sid ]->ac_state = ACSTATE_DEAD;
53 /* send off a tickle */
54 pap_tickle(server_pap, sid, &pap_ac[sid]->ac_sat);
58 static void child_cleanup(const pid_t pid)
62 for (i = 0; i < children->nsessions; i++)
63 if (pap_ac[i] && (pap_ac[i]->ac_pid == pid)) {
64 pap_ac[i]->ac_state = ACSTATE_DEAD;
71 void pap_kill(int sig)
74 server_child_kill(children, CHILD_PAPFORK, sig);
79 * This call handles open, tickle, and getstatus requests. On a
80 * successful open, it forks a child process.
81 * It returns an PAP to the child and parent and NULL if there is
84 PAP pap_slinit(PAP pap, server_child *server_children,
87 struct sigaction action;
88 struct itimerval timer;
89 struct sockaddr_at sat;
90 struct atp_block atpb;
92 struct iovec iov[ 8 ];
98 if (!(children = server_children))
101 if ((pap_ac = (struct pap_child **)
102 calloc(server_children->nsessions, sizeof(struct pap_child *)))
108 /* install cleanup pointer */
109 server_child_setup(children, CHILD_PAPFORK, child_cleanup);
111 /* install tickle handler */
112 action.sa_handler = tickle_handler;
113 sigemptyset(&action.sa_mask);
114 action.sa_flags = SA_RESTART;
116 timer.it_interval.tv_sec = timer.it_value.tv_sec = tickleval;
117 timer.it_interval.tv_usec = timer.it_value.tv_usec = 0;
118 if ((setitimer(ITIMER_REAL, &timer, NULL) < 0) ||
119 (sigaction(SIGALRM, &action, NULL) < 0)) {
126 memset( &sat, 0, sizeof( struct sockaddr_at ));
128 sat.sat_len = sizeof( struct sockaddr_at );
130 sat.sat_family = AF_APPLETALK;
131 sat.sat_addr.s_net = ATADDR_ANYNET;
132 sat.sat_addr.s_node = ATADDR_ANYNODE;
133 sat.sat_port = ATADDR_ANYPORT;
134 atpb.atp_saddr = &sat;
135 atpb.atp_rreqdata = pap->cmdbuf;
136 atpb.atp_rreqdlen = sizeof( pap->cmdbuf );
137 while ( atp_rreq( pap->pap_atp, &atpb ) < 0 ) {
138 if ( errno == EINTR || errno == EAGAIN ) {
144 switch ( pap->cmdbuf[ 0 ] ) {
146 sid = pap->cmdbuf[1];
147 if ((pap_ac[sid] != NULL) && (pap_ac[sid]->ac_state != ACSTATE_DEAD))
148 pap_ac[sid]->ac_state = ACSTATE_OK;
153 printf( "pap stat\n" );
155 if ( pap->pap_slen > 0 ) {
157 bcopy( pap->pap_status, pap->cmdbuf + 4, pap->pap_slen );
158 iov[ 0 ].iov_base = pap->cmdbuf;
159 iov[ 0 ].iov_len = 4 + pap->pap_slen;
160 atpb.atp_sresiov = iov;
161 atpb.atp_sresiovcnt = 1;
162 atp_sresp( pap->pap_atp, &atpb );
167 if (children->count < children->nsessions) {
170 for (sid = 0; sid < children->nsessions; sid++) {
171 if (pap_ac[sid] == NULL)
174 if (pap_ac[sid]->ac_state == ACSTATE_DEAD) {
181 if ((atp = atp_open(0)) == NULL)
184 switch (pid = fork()) {
186 signal(SIGTERM, SIG_DFL);
187 signal(SIGHUP, SIG_DFL);
188 /* free/close some things */
189 for (i = 0; i < children->nsessions; i++ ) {
190 if ( pap_ac[i] != NULL )
195 server_child_free(children);
197 atp_close(pap->pap_atp);
202 pap->pap_wss = pap->cmdbuf[1];
205 pap->pap_flags = PAPFL_SSS;
208 case -1 : /* error */
209 pap->cmdbuf[ 0 ] = 0;
210 pap->cmdbuf[ 1 ] = 0;
211 paperr = PAPERR_SERVBUSY;
214 default : /* parent process */
215 switch (server_child_add(children, CHILD_PAPFORK, pid)) {
216 case 0: /* added child */
217 if (pap_ac[sid] = (struct pap_child *)
218 malloc(sizeof(struct pap_child))) {
219 pap_ac[sid]->ac_pid = pid;
220 pap_ac[sid]->ac_state = ACSTATE_OK;
221 pap_ac[sid]->ac_sat = sat;
222 pap_ac[sid]->ac_sat.sat_port = pap->cmdbuf[1];
224 pap->cmdbuf[0] = atp_sockaddr(atp)->sat_port;
225 pap->cmdbuf[1] = sid;
228 } /* fall through if malloc fails */
229 case -1: /* bad error */
232 default: /* non-fatal error */
240 pap->cmdbuf[0] = pap->cmdbuf[1] = 0;
241 paperr = PAPERR_SERVBUSY;
244 bcopy( &paperr, pap->cmdbuf + 2, sizeof( u_short ));
245 iov[ 0 ].iov_base = pap->cmdbuf;
246 iov[ 0 ].iov_len = 4;
247 atpb.atp_sresiov = iov;
248 atpb.atp_sresiovcnt = 1;
249 atp_sresp( pap->pap_atp, &atpb );
253 syslog(LOG_INFO, "PAPUnknown %d", pap->cmdbuf[0]);