2 * Warning - this relies heavily on the TLI implementation in PTX 2.X and will
3 * probably not work under PTX 4.
5 * Author: Tim Wright, Sequent Computer Systems Ltd., UK.
7 * Modified slightly to conform to the new internal interfaces - Wietse
11 static char sccsid[] = "@(#) tli-sequent.c 1.1 94/12/28 17:42:51";
16 /* System libraries. */
18 #include <sys/types.h>
19 #include <sys/param.h>
21 #include <sys/tiuser.h>
22 #include <sys/stream.h>
23 #include <sys/stropts.h>
24 #include <sys/tihdr.h>
25 #include <sys/timod.h>
26 #include <sys/socket.h>
27 #include <netinet/in.h>
33 extern char *sys_errlist[];
36 extern char *t_errlist[];
42 #include "tli-sequent.h"
44 /* Forward declarations. */
46 static char *tli_error();
47 static void tli_sink();
49 /* tli_host - determine endpoint info */
52 struct request_info *request;
54 static struct sockaddr_in client;
55 static struct sockaddr_in server;
56 struct _ti_user *tli_state_ptr;
57 union T_primitives *TSI_prim_ptr;
62 * Use DNS and socket routines for name and address conversions.
65 sock_methods(request);
68 * Find out the client address using getpeerinaddr(). This call is the
69 * TLI equivalent to getpeername() under Dynix/ptx.
74 if (getpeerinaddr(request->fd, &client, len) < 0) {
75 tcpd_warn("can't get client address: %s", tli_error());
78 request->client->sin = &client;
80 /* Call TLI utility routine to get information on endpoint */
81 if ((tli_state_ptr = _t_checkfd(request->fd)) == NULL)
84 if (tli_state_ptr->ti_servtype == T_CLTS) {
85 /* UDP - may need to get address the hard way */
86 if (client.sin_addr.s_addr == 0) {
87 /* The UDP endpoint is not connected so we didn't get the */
88 /* remote address - get it the hard way ! */
90 /* Look at the control part of the top message on the stream */
91 /* we don't want to remove it from the stream so we use I_PEEK */
92 peek.ctlbuf.maxlen = tli_state_ptr->ti_ctlsize;
94 peek.ctlbuf.buf = tli_state_ptr->ti_ctlbuf;
95 /* Don't even look at the data */
96 peek.databuf.maxlen = -1;
101 switch (ioctl(request->fd, I_PEEK, &peek)) {
103 tcpd_warn("can't peek at endpoint: %s", tli_error());
106 /* No control part - we're hosed */
107 tcpd_warn("can't get UDP info: %s", tli_error());
113 /* Can we even check the PRIM_type ? */
114 if (peek.ctlbuf.len < sizeof(long)) {
115 tcpd_warn("UDP control info garbage");
118 TSI_prim_ptr = (union T_primitives *) peek.ctlbuf.buf;
119 if (TSI_prim_ptr->type != T_UNITDATA_IND) {
120 tcpd_warn("wrong type for UDP control info");
123 /* Validate returned unitdata indication packet */
124 if ((peek.ctlbuf.len < sizeof(struct T_unitdata_ind)) ||
125 ((TSI_prim_ptr->unitdata_ind.OPT_length != 0) &&
127 TSI_prim_ptr->unitdata_ind.OPT_length +
128 TSI_prim_ptr->unitdata_ind.OPT_offset))) {
129 tcpd_warn("UDP control info garbaged");
132 /* Extract the address */
134 peek.ctlbuf.buf + TSI_prim_ptr->unitdata_ind.SRC_offset,
135 TSI_prim_ptr->unitdata_ind.SRC_length);
137 request->sink = tli_sink;
139 if (getmyinaddr(request->fd, &server, len) < 0)
140 tcpd_warn("can't get local address: %s", tli_error());
142 request->server->sin = &server;
145 /* tli_error - convert tli error number to text */
147 static char *tli_error()
151 if (t_errno != TSYSERR) {
152 if (t_errno < 0 || t_errno >= t_nerr) {
153 sprintf(buf, "Unknown TLI error %d", t_errno);
156 return (t_errlist[t_errno]);
159 if (errno < 0 || errno >= sys_nerr) {
160 sprintf(buf, "Unknown UNIX error %d", errno);
163 return (sys_errlist[errno]);
168 /* tli_sink - absorb unreceived datagram */
170 static void tli_sink(fd)
173 struct t_unitdata *unit;
177 * Something went wrong. Absorb the datagram to keep inetd from looping.
178 * Allocate storage for address, control and data. If that fails, sleep
179 * for a couple of seconds in an attempt to keep inetd from looping too
183 if ((unit = (struct t_unitdata *) t_alloc(fd, T_UNITDATA, T_ALL)) == 0) {
184 tcpd_warn("t_alloc: %s", tli_error());
187 (void) t_rcvudata(fd, unit, &flags);
188 t_free((void *) unit, T_UNITDATA);
192 #endif /* TLI_SEQUENT */