2 * $Id: status.c,v 1.4 2001-08-15 01:37:34 srittau 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>
19 #include <sys/param.h>
21 #include <sys/sysctl.h>
22 #endif /* USE_GETHOSTID */
25 #include <netatalk/at.h>
26 #include <netatalk/endian.h>
27 #include <atalk/dsi.h>
28 #include <atalk/atp.h>
29 #include <atalk/asp.h>
30 #include <atalk/nbp.h>
32 #include "globals.h" /* includes <netdb.h> */
34 #include "afp_config.h"
37 static void status_flags(char *data, const int ipok,
38 const unsigned char passwdbits)
42 status = AFPSRVRINFO_COPY;
43 if (passwdbits & PASSWD_SET) /* some uams may not allow this. */
44 status |= AFPSRVRINFO_PASSWD;
45 if (passwdbits & PASSWD_NOSAVE)
46 status |= AFPSRVRINFO_NOSAVEPASSWD;
47 status |= AFPSRVRINFO_SRVSIGNATURE;
48 /* only advertise tcp/ip if we have a valid address */
50 status |= AFPSRVRINFO_TCPIP;
51 status |= AFPSRVRINFO_SRVMSGS;
52 status |= AFPSRVRINFO_SRVNOTIFY;
53 status |= AFPSRVRINFO_FASTBOZO;
54 status = htons(status);
55 memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
58 static int status_server(char *data, const char *server)
61 char *Obj, *Type, *Zone;
65 /* make room for all offsets before server name */
66 data += AFPSTATUS_PRELEN;
68 /* extract the obj part of the server */
69 Obj = (char *) server;
70 nbp_name(server, &Obj, &Type, &Zone);
73 memcpy( data, Obj, len );
74 if ((len + 1) & 1) /* pad server name and length byte to even boundary */
78 /* make room for signature and net address offset. save location of
81 * NOTE: technically, we don't need to reserve space for the
82 * signature and net address offsets if they're not going to be
83 * used. as there are no offsets after them, it doesn't hurt to
84 * have them specified though. so, we just do that to simplify
88 status = htons(len + AFPSTATUS_POSTLEN);
89 memcpy(start + AFPSTATUS_MACHOFF, &status, sizeof(status));
90 return len; /* return the offset to beginning of signature offset */
93 static void status_machine(char *data)
99 const char *machine = "afs";
101 const char *machine = "unix";
104 memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
105 data += ntohs( status );
106 len = strlen( machine );
108 memcpy( data, machine, len );
110 status = htons(data - start);
111 memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
115 /* server signature is a 16-byte quantity */
116 static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
117 const char *hostname)
121 u_int16_t offset, sigoff;
131 /* get server signature offset */
132 memcpy(&offset, data + *servoffset, sizeof(offset));
133 sigoff = offset = ntohs(offset);
135 /* jump to server signature offset */
138 /* 16-byte signature consists of copies of the hostid */
139 #if defined(BSD4_4) && defined(USE_GETHOSTID)
141 mib[1] = KERN_HOSTID;
142 len = sizeof(hostid);
143 sysctl(mib, 2, &hostid, &len, NULL, 0);
144 #else /* BSD4_4 && USE_GETHOSTID */
145 hostid = gethostid();
146 #endif /* BSD4_4 && USE_GETHOSTID */
149 hostid = dsi->server.sin_addr.s_addr;
151 struct hostent *host;
153 if ((host = gethostbyname(hostname)))
154 hostid = ((struct in_addr *) host->h_addr)->s_addr;
158 /* it turns out that a server signature screws up separate
159 * servers running on the same machine. to work around that,
160 * i add in an increment */
163 for (i = 0; i < 16; i += sizeof(hostid)) {
164 memcpy(data, &hostid, sizeof(hostid));
165 data += sizeof(hostid);
168 /* calculate net address offset */
169 *servoffset += sizeof(offset);
170 offset = htons(data - status);
171 memcpy(status + *servoffset, &offset, sizeof(offset));
175 static int status_netaddress(char *data, const int servoffset,
176 const ASP asp, const DSI *dsi,
184 /* get net address offset */
185 memcpy(&offset, data + servoffset, sizeof(offset));
186 data += ntohs(offset);
190 len (byte = sizeof(length + address type + address)
191 address type (byte, ip address = 0x01, ip + port = 0x02,
192 ddp address = 0x03, fqdn = 0x04)
193 address (up to 254 bytes, ip = 4, ip + port = 6, ddp = 4)
196 /* number of addresses. this currently screws up if we have a dsi
197 connection, but we don't have the ip address. to get around this,
198 we turn off the status flag for tcp/ip. */
199 *data++ = (fqdn ? 1 : 0) + (dsi ? 1 : 0) + (asp ? 1 : 0);
201 /* handle DNS names */
203 int len = strlen(fqdn) + 2;
206 memcpy(data, fqdn, len);
212 const struct sockaddr_in *inaddr = &dsi->server;
214 if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
215 *data++ = 6; /* length */
216 *data++ = 0x01; /* basic ip address */
217 memcpy(data, &inaddr->sin_addr.s_addr,
218 sizeof(inaddr->sin_addr.s_addr));
219 data += sizeof(inaddr->sin_addr.s_addr);
221 /* ip address + port */
223 *data++ = 0x02; /* ip address with port */
224 memcpy(data, &inaddr->sin_addr.s_addr,
225 sizeof(inaddr->sin_addr.s_addr));
226 data += sizeof(inaddr->sin_addr.s_addr);
227 memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
228 data += sizeof(inaddr->sin_port);
234 const struct sockaddr_at *ddpaddr = atp_sockaddr(asp->asp_atp);
238 *data++ = 0x03; /* ddp address */
239 memcpy(data, &ddpaddr->sat_addr.s_net, sizeof(ddpaddr->sat_addr.s_net));
240 data += sizeof(ddpaddr->sat_addr.s_net);
241 memcpy(data, &ddpaddr->sat_addr.s_node,
242 sizeof(ddpaddr->sat_addr.s_node));
243 data += sizeof(ddpaddr->sat_addr.s_node);
244 memcpy(data, &ddpaddr->sat_port, sizeof(ddpaddr->sat_port));
245 data += sizeof(ddpaddr->sat_port);
247 #endif /* ! NO_DDP */
249 /* return length of buffer */
250 return (data - begin);
253 /* returns actual offset to signature */
254 static void status_icon(char *data, const char *icondata,
255 const int iconlen, const int sigoffset)
258 char *sigdata = data + sigoffset;
259 u_int16_t ret, status;
261 memcpy(&status, start + AFPSTATUS_ICONOFF, sizeof(status));
262 if ( icondata == NULL ) {
264 memset(start + AFPSTATUS_ICONOFF, 0, sizeof(status));
266 data += ntohs( status );
267 memcpy( data, icondata, iconlen);
269 ret = htons(data - start);
272 /* put in signature offset */
274 memcpy(sigdata, &ret, sizeof(ret));
277 void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
278 const struct afp_options *options)
285 if (!(aspconfig || dsiconfig) || !options)
289 asp = aspconfig->obj.handle;
290 status = aspconfig->status;
295 dsi = dsiconfig->obj.handle;
297 status = dsiconfig->status;
302 * These routines must be called in order -- earlier calls
303 * set the offsets for later calls.
305 * using structs is a bad idea, but that's what the original code
306 * does. solaris, in fact, will segfault with them. so, now
307 * we just use the powers of #defines and memcpy.
309 * reply block layout (offsets are 16-bit quantities):
310 * machine type offset -> AFP version count offset ->
311 * UAM count offset -> vol icon/mask offset -> flags ->
313 * server name [padded to even boundary] -> signature offset ->
314 * network address offset ->
316 * at the appropriate offsets:
317 * machine type, afp versions, uams, server signature
318 * (16-bytes), network addresses, volume icon/mask
321 status_flags(status, options->fqdn ||
322 (dsiconfig && dsi->server.sin_addr.s_addr),
323 options->passwdbits);
324 /* returns offset to signature offset */
325 c = status_server(status, options->server ? options->server :
327 status_machine(status);
328 status_versions(status);
329 status_uams(status, options->uamlist);
330 if (options->flags & OPTION_CUSTOMICON)
331 status_icon(status, icon, sizeof(icon), c);
333 status_icon(status, apple_atalk_icon, sizeof(apple_atalk_icon), c);
335 sigoff = status_signature(status, &c, dsi, options->hostname);
338 c = status_netaddress(status, c, asp, dsi, options->fqdn);
343 asp_setstatus(asp, status, c);
344 aspconfig->signature = status + sigoff;
345 aspconfig->statuslen = c;
347 #endif /* ! NO_DDP */
350 if (aspconfig) { /* copy to dsiconfig */
351 memcpy(dsiconfig->status, status, ATP_MAXDATA);
352 status = dsiconfig->status;
355 if ((options->flags & OPTION_CUSTOMICON) == 0) {
356 status_icon(status, apple_tcp_icon, sizeof(apple_tcp_icon), 0);
358 dsi_setstatus(dsi, status, c);
359 dsiconfig->signature = status + sigoff;
360 dsiconfig->statuslen = c;
364 /* this is the same as asp/dsi_getstatus */
365 int afp_getsrvrinfo(obj, ibuf, ibuflen, rbuf, rbuflen )
368 int ibuflen, *rbuflen;
370 AFPConfig *config = obj->config;
372 memcpy(rbuf, config->status, config->statuslen);
373 *rbuflen = config->statuslen;