2 * $Id: status.c,v 1.13.6.5 2004-06-09 01:31:14 bfernhomberg 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>
32 #include <atalk/unicode.h>
34 #include "globals.h" /* includes <netdb.h> */
36 #include "afp_config.h"
39 static int maxstatuslen = 0;
41 static void status_flags(char *data, const int notif, const int ipok,
42 const unsigned char passwdbits, const int dirsrvcs)
46 status = AFPSRVRINFO_COPY;
47 if (passwdbits & PASSWD_SET) /* some uams may not allow this. */
48 status |= AFPSRVRINFO_PASSWD;
49 if (passwdbits & PASSWD_NOSAVE)
50 status |= AFPSRVRINFO_NOSAVEPASSWD;
51 status |= AFPSRVRINFO_SRVSIGNATURE;
52 /* only advertise tcp/ip if we have a valid address */
54 status |= AFPSRVRINFO_TCPIP;
55 status |= AFPSRVRINFO_SRVMSGS;
56 /* Allow the user to decide if we should support server notifications.
57 * With this turned off, the clients will poll for directory changes every
58 * 10 seconds. This might be too costly to network resources, so make
59 * this an optional thing. Default will be to _not_ support server
62 status |= AFPSRVRINFO_SRVNOTIFY;
64 status |= AFPSRVRINFO_FASTBOZO;
65 status |= AFPSRVRINFO_SRVRDIR; /* AFP 3.1 specs says we need to specify this, but may set the count to 0 */
66 /* We don't set the UTF8 name flag here, we don't know whether we have enough space ... */
68 status = htons(status);
69 memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
72 static int status_server(char *data, const char *server, const struct afp_options *options)
75 char *Obj, *Type, *Zone;
80 /* make room for all offsets before server name */
81 data += AFPSTATUS_PRELEN;
83 /* extract the obj part of the server */
84 Obj = (char *) server;
85 nbp_name(server, &Obj, &Type, &Zone);
86 if ((size_t)-1 == (len = convert_string(
87 options->unixcharset, options->maccharset,
88 Obj, strlen(Obj), buf, 31)) ) {
89 len = MIN(strlen(Obj), 31);
91 memcpy( data, Obj, len );
92 LOG ( log_error, logtype_afpd, "Could not set servername, using fallback");
95 memcpy( data, buf, len );
97 if ((len + 1) & 1) /* pad server name and length byte to even boundary */
101 /* make room for signature and net address offset. save location of
102 * signature offset. we're also making room for directory names offset
103 * and the utf-8 server name offset.
105 * NOTE: technically, we don't need to reserve space for the
106 * signature and net address offsets if they're not going to be
107 * used. as there are no offsets after them, it doesn't hurt to
108 * have them specified though. so, we just do that to simplify
111 * NOTE2: AFP3.1 Documentation states that the directory names offset
112 * is a required feature, even though it can be set to zero.
115 status = htons(len + AFPSTATUS_POSTLEN);
116 memcpy(start + AFPSTATUS_MACHOFF, &status, sizeof(status));
117 return len; /* return the offset to beginning of signature offset */
120 static void status_machine(char *data)
126 const char *machine = "afs";
128 const char *machine = "Macintosh"; /* shot in the dark, let's see if this changes OSX behaviour, it shouldn't */
131 memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
132 data += ntohs( status );
133 len = strlen( machine );
135 memcpy( data, machine, len );
137 status = htons(data - start);
138 memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
141 /* --------------------------------
142 * it turns out that a server signature screws up separate
143 * servers running on the same machine. to work around that,
144 * i add in an increment.
145 * Not great, server signature are config dependent but well.
150 /* server signature is a 16-byte quantity */
151 static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
152 const struct afp_options *options)
157 u_int16_t offset, sigoff;
166 /* get server signature offset */
167 memcpy(&offset, data + *servoffset, sizeof(offset));
168 sigoff = offset = ntohs(offset);
170 /* jump to server signature offset */
173 /* Signature type is user string */
174 if (strncmp(options->signature, "user", 4) == 0) {
175 if (strlen(options->signature) <= 5) {
176 LOG(log_warning, logtype_afpd, "Signature %s id not valid. Switching back to hostid.",
178 goto server_signature_hostid;
180 usersign = options->signature + 5;
181 if (strlen(usersign) < 3)
182 LOG(log_warning, logtype_afpd, "Signature %s is very short !",
186 strncpy(data, usersign, 16);
188 goto server_signature_done;
189 } /* signature = user */
191 /* If signature type is a standard hostid... */
192 server_signature_hostid:
193 /* 16-byte signature consists of copies of the hostid */
194 #if defined(BSD4_4) && defined(USE_GETHOSTID)
196 mib[1] = KERN_HOSTID;
197 len = sizeof(hostid);
198 sysctl(mib, 2, &hostid, &len, NULL, 0);
199 #else /* BSD4_4 && USE_GETHOSTID */
200 hostid = gethostid();
201 #endif /* BSD4_4 && USE_GETHOSTID */
204 hostid = dsi->server.sin_addr.s_addr;
206 struct hostent *host;
208 if ((host = gethostbyname(options->hostname)))
209 hostid = ((struct in_addr *) host->h_addr)->s_addr;
213 /* it turns out that a server signature screws up separate
214 * servers running on the same machine. to work around that,
215 * i add in an increment */
218 for (i = 0; i < 16; i += sizeof(hostid)) {
219 memcpy(data, &hostid, sizeof(hostid));
220 data += sizeof(hostid);
223 server_signature_done:
224 /* calculate net address offset */
225 *servoffset += sizeof(offset);
226 offset = htons(data - status);
227 memcpy(status + *servoffset, &offset, sizeof(offset));
231 static int status_netaddress(char *data, int *servoffset,
232 const ASP asp, const DSI *dsi,
240 /* get net address offset */
241 memcpy(&offset, data + *servoffset, sizeof(offset));
242 data += ntohs(offset);
246 len (byte = sizeof(length + address type + address)
247 address type (byte, ip address = 0x01, ip + port = 0x02,
248 ddp address = 0x03, fqdn = 0x04)
249 address (up to 254 bytes, ip = 4, ip + port = 6, ddp = 4)
252 /* number of addresses. this currently screws up if we have a dsi
253 connection, but we don't have the ip address. to get around this,
254 we turn off the status flag for tcp/ip. */
255 *data++ = ((fqdn && dsi)? 1 : 0) + (dsi ? 1 : 0) + (asp ? 1 : 0);
259 const struct sockaddr_in *inaddr = &dsi->server;
261 if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
262 *data++ = 6; /* length */
263 *data++ = 0x01; /* basic ip address */
264 memcpy(data, &inaddr->sin_addr.s_addr,
265 sizeof(inaddr->sin_addr.s_addr));
266 data += sizeof(inaddr->sin_addr.s_addr);
268 /* ip address + port */
270 *data++ = 0x02; /* ip address with port */
271 memcpy(data, &inaddr->sin_addr.s_addr,
272 sizeof(inaddr->sin_addr.s_addr));
273 data += sizeof(inaddr->sin_addr.s_addr);
274 memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
275 data += sizeof(inaddr->sin_port);
279 /* handle DNS names */
281 int len = strlen(fqdn);
284 memcpy(data, fqdn, len);
290 const struct sockaddr_at *ddpaddr = atp_sockaddr(asp->asp_atp);
294 *data++ = 0x03; /* ddp address */
295 memcpy(data, &ddpaddr->sat_addr.s_net, sizeof(ddpaddr->sat_addr.s_net));
296 data += sizeof(ddpaddr->sat_addr.s_net);
297 memcpy(data, &ddpaddr->sat_addr.s_node,
298 sizeof(ddpaddr->sat_addr.s_node));
299 data += sizeof(ddpaddr->sat_addr.s_node);
300 memcpy(data, &ddpaddr->sat_port, sizeof(ddpaddr->sat_port));
301 data += sizeof(ddpaddr->sat_port);
303 #endif /* ! NO_DDP */
305 /* calculate/store Directory Services Names offset */
306 offset = htons(data - begin);
307 *servoffset += sizeof(offset);
308 memcpy(begin + *servoffset, &offset, sizeof(offset));
310 /* return length of buffer */
311 return (data - begin);
314 static int status_directorynames(char *data, int *diroffset,
316 const struct afp_options *options)
320 memcpy(&offset, data + *diroffset, sizeof(offset));
321 offset = ntohs(offset);
324 /* I can not find documentation of any other purpose for the
325 * DirectoryNames field.
328 * Try to synthesize a principal:
329 * service '/' fqdn '@' realm
331 if (options->k5service && options->k5realm && options->fqdn) {
332 /* should k5princ be utf8 encoded? */
334 char *p = strchr( options->fqdn, ':' );
337 len = strlen( options->k5service )
338 + strlen( options->fqdn )
339 + strlen( options->k5realm );
340 len+=2; /* '/' and '@' */
341 if ( len+2 > maxstatuslen - offset) {
345 *data++ = 1; /* DirectoryNamesCount */
347 snprintf( data, len + 1, "%s/%s@%s", options->k5service,
348 options->fqdn, options->k5realm );
357 /* Calculate and store offset for UTF8ServerName */
358 *diroffset += sizeof(u_int16_t);
359 offset = htons(data - begin);
360 memcpy(begin + *diroffset, &offset, sizeof(u_int16_t));
362 /* return length of buffer */
363 return (data - begin);
366 static int status_utf8servername(char *data, int *nameoffset,
368 const struct afp_options *options)
370 char *Obj, *Type, *Zone;
374 u_int16_t offset, status;
376 memcpy(&offset, data + *nameoffset, sizeof(offset));
377 offset = ntohs(offset);
381 * What is the valid character range for an nbpname?
383 * Apple's server likes to use the non-qualified hostname
384 * This obviously won't work very well if multiple servers are running
388 /* extract the obj part of the server */
389 Obj = (char *) (options->server ? options->server : options->hostname);
390 nbp_name(options->server ? options->server : options->hostname, &Obj, &Type, &Zone);
392 if ((size_t) -1 == (len = convert_string (
393 options->unixcharset, CH_UTF8_MAC,
394 Obj, strlen(Obj), data+sizeof(namelen), maxstatuslen-offset )) ) {
395 LOG ( log_error, logtype_afpd, "Could not set utf8 servername");
397 /* set offset to 0 */
398 memset(begin + *nameoffset, 0, sizeof(offset));
401 namelen = htons(len);
402 memcpy( data, &namelen, sizeof(namelen));
403 data += sizeof(namelen);
405 offset = htons(offset);
406 memcpy(begin + *nameoffset, &offset, sizeof(u_int16_t));
408 /* Now set the flag ... */
409 memcpy(&status, begin + AFPSTATUS_FLAGOFF, sizeof(status));
410 status = ntohs(status);
411 status |= AFPSRVRINFO_SRVUTF8;
412 status = htons(status);
413 memcpy(begin + AFPSTATUS_FLAGOFF, &status, sizeof(status));
416 /* return length of buffer */
417 return (data - begin);
421 /* returns actual offset to signature */
422 static void status_icon(char *data, const unsigned char *icondata,
423 const int iconlen, const int sigoffset)
426 char *sigdata = data + sigoffset;
427 u_int16_t ret, status;
429 memcpy(&status, start + AFPSTATUS_ICONOFF, sizeof(status));
430 if ( icondata == NULL ) {
432 memset(start + AFPSTATUS_ICONOFF, 0, sizeof(status));
434 data += ntohs( status );
435 memcpy( data, icondata, iconlen);
437 ret = htons(data - start);
440 /* put in signature offset */
442 memcpy(sigdata, &ret, sizeof(ret));
445 /* ---------------------
452 /* ---------------------
454 void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
455 const struct afp_options *options)
460 int statuslen, c, sigoff;
462 if (!(aspconfig || dsiconfig) || !options)
466 asp = aspconfig->obj.handle;
467 status = aspconfig->status;
468 maxstatuslen=sizeof(aspconfig->status);
473 dsi = dsiconfig->obj.handle;
475 status = dsiconfig->status;
476 maxstatuslen=sizeof(dsiconfig->status);
481 * These routines must be called in order -- earlier calls
482 * set the offsets for later calls.
484 * using structs is a bad idea, but that's what the original code
485 * does. solaris, in fact, will segfault with them. so, now
486 * we just use the powers of #defines and memcpy.
488 * reply block layout (offsets are 16-bit quantities):
489 * machine type offset -> AFP version count offset ->
490 * UAM count offset -> vol icon/mask offset -> flags ->
492 * server name [padded to even boundary] -> signature offset ->
493 * network address offset ->
495 * at the appropriate offsets:
496 * machine type, afp versions, uams, server signature
497 * (16-bytes), network addresses, volume icon/mask
500 status_flags(status, options->server_notif, options->fqdn ||
501 (dsiconfig && dsi->server.sin_addr.s_addr),
503 (options->k5service && options->k5realm && options->fqdn));
504 /* returns offset to signature offset */
505 c = status_server(status, options->server ? options->server :
506 options->hostname, options);
507 status_machine(status);
508 status_versions(status);
509 status_uams(status, options->uamlist);
510 if (options->flags & OPTION_CUSTOMICON)
511 status_icon(status, icon, sizeof(icon), c);
513 status_icon(status, apple_atalk_icon, sizeof(apple_atalk_icon), c);
515 sigoff = status_signature(status, &c, dsi, options);
516 /* c now contains the offset where the netaddress offset lives */
518 status_netaddress(status, &c, asp, dsi, options->fqdn);
519 /* c now contains the offset where the Directory Names Count offset lives */
521 statuslen = status_directorynames(status, &c, dsi, options);
522 /* c now contains the offset where the UTF-8 ServerName offset lives */
524 if ( statuslen < maxstatuslen)
525 statuslen = status_utf8servername(status, &c, dsi, options);
529 asp_setstatus(asp, status, statuslen);
530 aspconfig->signature = status + sigoff;
531 aspconfig->statuslen = statuslen;
533 #endif /* ! NO_DDP */
536 if (aspconfig) { /* copy to dsiconfig */
537 memcpy(dsiconfig->status, status, ATP_MAXDATA);
538 status = dsiconfig->status;
541 if ((options->flags & OPTION_CUSTOMICON) == 0) {
542 status_icon(status, apple_tcp_icon, sizeof(apple_tcp_icon), 0);
544 dsi_setstatus(dsi, status, statuslen);
545 dsiconfig->signature = status + sigoff;
546 dsiconfig->statuslen = statuslen;
550 /* this is the same as asp/dsi_getstatus */
551 int afp_getsrvrinfo(obj, ibuf, ibuflen, rbuf, rbuflen )
554 int ibuflen, *rbuflen;
556 AFPConfig *config = obj->config;
558 memcpy(rbuf, config->status, config->statuslen);
559 *rbuflen = config->statuslen;