2 * $Id: status.c,v 1.9 2002-12-07 02:55:00 rlewczuk Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
16 #include <sys/types.h>
17 #include <atalk/logger.h>
20 #include <sys/param.h>
22 #include <sys/sysctl.h>
23 #endif /* USE_GETHOSTID */
26 #include <netatalk/at.h>
27 #include <netatalk/endian.h>
28 #include <atalk/dsi.h>
29 #include <atalk/atp.h>
30 #include <atalk/asp.h>
31 #include <atalk/nbp.h>
33 #include "globals.h" /* includes <netdb.h> */
35 #include "afp_config.h"
38 static void status_flags(char *data, const int notif, const int ipok,
39 const unsigned char passwdbits)
43 status = AFPSRVRINFO_COPY;
44 if (passwdbits & PASSWD_SET) /* some uams may not allow this. */
45 status |= AFPSRVRINFO_PASSWD;
46 if (passwdbits & PASSWD_NOSAVE)
47 status |= AFPSRVRINFO_NOSAVEPASSWD;
48 status |= AFPSRVRINFO_SRVSIGNATURE;
49 /* only advertise tcp/ip if we have a valid address */
51 status |= AFPSRVRINFO_TCPIP;
52 status |= AFPSRVRINFO_SRVMSGS;
53 /* Allow the user to decide if we should support server notifications.
54 * With this turned off, the clients will poll for directory changes every
55 * 10 seconds. This might be too costly to network resources, so make
56 * this an optional thing. Default will be to _not_ support server
59 status |= AFPSRVRINFO_SRVNOTIFY;
61 status |= AFPSRVRINFO_FASTBOZO;
62 status = htons(status);
63 memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
66 static int status_server(char *data, const char *server)
69 char *Obj, *Type, *Zone;
73 /* make room for all offsets before server name */
74 data += AFPSTATUS_PRELEN;
76 /* extract the obj part of the server */
77 Obj = (char *) server;
78 nbp_name(server, &Obj, &Type, &Zone);
81 memcpy( data, Obj, len );
82 if ((len + 1) & 1) /* pad server name and length byte to even boundary */
86 /* make room for signature and net address offset. save location of
89 * NOTE: technically, we don't need to reserve space for the
90 * signature and net address offsets if they're not going to be
91 * used. as there are no offsets after them, it doesn't hurt to
92 * have them specified though. so, we just do that to simplify
96 status = htons(len + AFPSTATUS_POSTLEN);
97 memcpy(start + AFPSTATUS_MACHOFF, &status, sizeof(status));
98 return len; /* return the offset to beginning of signature offset */
101 static void status_machine(char *data)
107 const char *machine = "afs";
109 const char *machine = "unix";
112 memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
113 data += ntohs( status );
114 len = strlen( machine );
116 memcpy( data, machine, len );
118 status = htons(data - start);
119 memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
123 /* server signature is a 16-byte quantity */
124 static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
125 const struct afp_options *options)
128 char *usersign, *ifaddr;
130 u_int16_t offset, sigoff;
140 /* get server signature offset */
141 memcpy(&offset, data + *servoffset, sizeof(offset));
142 sigoff = offset = ntohs(offset);
144 /* jump to server signature offset */
147 /* Signature type is user string */
148 if (strncmp(options->signature, "user", 4) == 0) {
149 if (strlen(options->signature) <= 5) {
150 LOG(log_warning, logtype_afpd, "Signature %s id not valid. Switching back to hostid.",
152 goto server_signature_hostid;
154 usersign = options->signature + 5;
155 if (strlen(usersign) < 3)
156 LOG(log_warning, logtype_afpd, "Signature %s is very short !",
160 strncpy(data, usersign, 16);
162 goto server_signature_done;
163 } /* signature = user */
165 /* If signature type is a standard hostid... */
166 server_signature_hostid:
167 /* 16-byte signature consists of copies of the hostid */
168 #if defined(BSD4_4) && defined(USE_GETHOSTID)
170 mib[1] = KERN_HOSTID;
171 len = sizeof(hostid);
172 sysctl(mib, 2, &hostid, &len, NULL, 0);
173 #else /* BSD4_4 && USE_GETHOSTID */
174 hostid = gethostid();
175 #endif /* BSD4_4 && USE_GETHOSTID */
178 hostid = dsi->server.sin_addr.s_addr;
180 struct hostent *host;
182 if ((host = gethostbyname(options->hostname)))
183 hostid = ((struct in_addr *) host->h_addr)->s_addr;
187 /* it turns out that a server signature screws up separate
188 * servers running on the same machine. to work around that,
189 * i add in an increment */
192 for (i = 0; i < 16; i += sizeof(hostid)) {
193 memcpy(data, &hostid, sizeof(hostid));
194 data += sizeof(hostid);
197 server_signature_done:
198 /* calculate net address offset */
199 *servoffset += sizeof(offset);
200 offset = htons(data - status);
201 memcpy(status + *servoffset, &offset, sizeof(offset));
205 static int status_netaddress(char *data, const int servoffset,
206 const ASP asp, const DSI *dsi,
214 /* get net address offset */
215 memcpy(&offset, data + servoffset, sizeof(offset));
216 data += ntohs(offset);
220 len (byte = sizeof(length + address type + address)
221 address type (byte, ip address = 0x01, ip + port = 0x02,
222 ddp address = 0x03, fqdn = 0x04)
223 address (up to 254 bytes, ip = 4, ip + port = 6, ddp = 4)
226 /* number of addresses. this currently screws up if we have a dsi
227 connection, but we don't have the ip address. to get around this,
228 we turn off the status flag for tcp/ip. */
229 *data++ = (fqdn ? 1 : 0) + (dsi ? 1 : 0) + (asp ? 1 : 0);
231 /* handle DNS names */
233 int len = strlen(fqdn) + 2;
236 memcpy(data, fqdn, len);
242 const struct sockaddr_in *inaddr = &dsi->server;
244 if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
245 *data++ = 6; /* length */
246 *data++ = 0x01; /* basic ip address */
247 memcpy(data, &inaddr->sin_addr.s_addr,
248 sizeof(inaddr->sin_addr.s_addr));
249 data += sizeof(inaddr->sin_addr.s_addr);
251 /* ip address + port */
253 *data++ = 0x02; /* ip address with port */
254 memcpy(data, &inaddr->sin_addr.s_addr,
255 sizeof(inaddr->sin_addr.s_addr));
256 data += sizeof(inaddr->sin_addr.s_addr);
257 memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
258 data += sizeof(inaddr->sin_port);
264 const struct sockaddr_at *ddpaddr = atp_sockaddr(asp->asp_atp);
268 *data++ = 0x03; /* ddp address */
269 memcpy(data, &ddpaddr->sat_addr.s_net, sizeof(ddpaddr->sat_addr.s_net));
270 data += sizeof(ddpaddr->sat_addr.s_net);
271 memcpy(data, &ddpaddr->sat_addr.s_node,
272 sizeof(ddpaddr->sat_addr.s_node));
273 data += sizeof(ddpaddr->sat_addr.s_node);
274 memcpy(data, &ddpaddr->sat_port, sizeof(ddpaddr->sat_port));
275 data += sizeof(ddpaddr->sat_port);
277 #endif /* ! NO_DDP */
279 /* return length of buffer */
280 return (data - begin);
283 /* returns actual offset to signature */
284 static void status_icon(char *data, const unsigned char *icondata,
285 const int iconlen, const int sigoffset)
288 char *sigdata = data + sigoffset;
289 u_int16_t ret, status;
291 memcpy(&status, start + AFPSTATUS_ICONOFF, sizeof(status));
292 if ( icondata == NULL ) {
294 memset(start + AFPSTATUS_ICONOFF, 0, sizeof(status));
296 data += ntohs( status );
297 memcpy( data, icondata, iconlen);
299 ret = htons(data - start);
302 /* put in signature offset */
304 memcpy(sigdata, &ret, sizeof(ret));
307 void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
308 const struct afp_options *options)
315 if (!(aspconfig || dsiconfig) || !options)
319 asp = aspconfig->obj.handle;
320 status = aspconfig->status;
325 dsi = dsiconfig->obj.handle;
327 status = dsiconfig->status;
332 * These routines must be called in order -- earlier calls
333 * set the offsets for later calls.
335 * using structs is a bad idea, but that's what the original code
336 * does. solaris, in fact, will segfault with them. so, now
337 * we just use the powers of #defines and memcpy.
339 * reply block layout (offsets are 16-bit quantities):
340 * machine type offset -> AFP version count offset ->
341 * UAM count offset -> vol icon/mask offset -> flags ->
343 * server name [padded to even boundary] -> signature offset ->
344 * network address offset ->
346 * at the appropriate offsets:
347 * machine type, afp versions, uams, server signature
348 * (16-bytes), network addresses, volume icon/mask
351 status_flags(status, options->server_notif, options->fqdn ||
352 (dsiconfig && dsi->server.sin_addr.s_addr),
353 options->passwdbits);
354 /* returns offset to signature offset */
355 c = status_server(status, options->server ? options->server :
357 status_machine(status);
358 status_versions(status);
359 status_uams(status, options->uamlist);
360 if (options->flags & OPTION_CUSTOMICON)
361 status_icon(status, icon, sizeof(icon), c);
363 status_icon(status, apple_atalk_icon, sizeof(apple_atalk_icon), c);
365 sigoff = status_signature(status, &c, dsi, options);
368 c = status_netaddress(status, c, asp, dsi, options->fqdn);
373 asp_setstatus(asp, status, c);
374 aspconfig->signature = status + sigoff;
375 aspconfig->statuslen = c;
377 #endif /* ! NO_DDP */
380 if (aspconfig) { /* copy to dsiconfig */
381 memcpy(dsiconfig->status, status, ATP_MAXDATA);
382 status = dsiconfig->status;
385 if ((options->flags & OPTION_CUSTOMICON) == 0) {
386 status_icon(status, apple_tcp_icon, sizeof(apple_tcp_icon), 0);
388 dsi_setstatus(dsi, status, c);
389 dsiconfig->signature = status + sigoff;
390 dsiconfig->statuslen = c;
394 /* this is the same as asp/dsi_getstatus */
395 int afp_getsrvrinfo(obj, ibuf, ibuflen, rbuf, rbuflen )
398 int ibuflen, *rbuflen;
400 AFPConfig *config = obj->config;
402 memcpy(rbuf, config->status, config->statuslen);
403 *rbuflen = config->statuslen;