2 * Copyright (c) 1990,1993 Regents of The University of Michigan.
3 * All Rights Reserved. See COPYRIGHT.
14 #include <sys/types.h>
17 #include <sys/param.h>
19 #include <sys/sysctl.h>
23 #include <netatalk/at.h>
24 #include <netatalk/endian.h>
25 #include <atalk/dsi.h>
26 #include <atalk/atp.h>
27 #include <atalk/asp.h>
28 #include <atalk/nbp.h>
30 #include "globals.h" /* includes <netdb.h> */
32 #include "afp_config.h"
35 static void status_flags(char *data, const int ipok,
36 const unsigned char passwdbits)
40 status = AFPSRVRINFO_COPY;
41 if (passwdbits & PASSWD_SET) /* some uams may not allow this. */
42 status |= AFPSRVRINFO_PASSWD;
43 if (passwdbits & PASSWD_NOSAVE)
44 status |= AFPSRVRINFO_NOSAVEPASSWD;
45 status |= AFPSRVRINFO_SRVSIGNATURE;
46 /* only advertise tcp/ip if we have a valid address */
48 status |= AFPSRVRINFO_TCPIP;
49 status |= AFPSRVRINFO_SRVMSGS;
50 status |= AFPSRVRINFO_SRVNOTIFY;
51 status |= AFPSRVRINFO_FASTBOZO;
52 status = htons(status);
53 memcpy(data + AFPSTATUS_FLAGOFF, &status, sizeof(status));
56 static int status_server(char *data, const char *server)
59 char *Obj, *Type, *Zone;
63 /* make room for all offsets before server name */
64 data += AFPSTATUS_PRELEN;
66 /* extract the obj part of the server */
67 Obj = (char *) server;
68 nbp_name(server, &Obj, &Type, &Zone);
71 memcpy( data, Obj, len );
72 if ((len + 1) & 1) /* pad server name and length byte to even boundary */
76 /* make room for signature and net address offset. save location of
79 * NOTE: technically, we don't need to reserve space for the
80 * signature and net address offsets if they're not going to be
81 * used. as there are no offsets after them, it doesn't hurt to
82 * have them specified though. so, we just do that to simplify
86 status = htons(len + AFPSTATUS_POSTLEN);
87 memcpy(start + AFPSTATUS_MACHOFF, &status, sizeof(status));
88 return len; /* return the offset to beginning of signature offset */
91 static void status_machine(char *data)
97 const char *machine = "afs";
99 const char *machine = "unix";
102 memcpy(&status, start + AFPSTATUS_MACHOFF, sizeof(status));
103 data += ntohs( status );
104 len = strlen( machine );
106 memcpy( data, machine, len );
108 status = htons(data - start);
109 memcpy(start + AFPSTATUS_VERSOFF, &status, sizeof(status));
113 /* server signature is a 16-byte quantity */
114 static u_int16_t status_signature(char *data, int *servoffset, DSI *dsi,
115 const char *hostname)
119 u_int16_t offset, sigoff;
129 /* get server signature offset */
130 memcpy(&offset, data + *servoffset, sizeof(offset));
131 sigoff = offset = ntohs(offset);
133 /* jump to server signature offset */
136 /* 16-byte signature consists of copies of the hostid */
137 #if defined(BSD4_4) && defined(USE_GETHOSTID)
139 mib[1] = KERN_HOSTID;
140 len = sizeof(hostid);
141 sysctl(mib, 2, &hostid, &len, NULL, 0);
143 hostid = gethostid();
147 hostid = dsi->server.sin_addr.s_addr;
149 struct hostent *host;
151 if ((host = gethostbyname(hostname)))
152 hostid = ((struct in_addr *) host->h_addr)->s_addr;
156 /* it turns out that a server signature screws up separate
157 * servers running on the same machine. to work around that,
158 * i add in an increment */
161 for (i = 0; i < 16; i += sizeof(hostid)) {
162 memcpy(data, &hostid, sizeof(hostid));
163 data += sizeof(hostid);
166 /* calculate net address offset */
167 *servoffset += sizeof(offset);
168 offset = htons(data - status);
169 memcpy(status + *servoffset, &offset, sizeof(offset));
173 static int status_netaddress(char *data, const int servoffset,
174 const ASP asp, const DSI *dsi,
182 /* get net address offset */
183 memcpy(&offset, data + servoffset, sizeof(offset));
184 data += ntohs(offset);
188 len (byte = sizeof(length + address type + address)
189 address type (byte, ip address = 0x01, ip + port = 0x02,
190 ddp address = 0x03, fqdn = 0x04)
191 address (up to 254 bytes, ip = 4, ip + port = 6, ddp = 4)
194 /* number of addresses. this currently screws up if we have a dsi
195 connection, but we don't have the ip address. to get around this,
196 we turn off the status flag for tcp/ip. */
197 *data++ = (fqdn ? 1 : 0) + (dsi ? 1 : 0) + (asp ? 1 : 0);
199 /* handle DNS names */
201 int len = strlen(fqdn) + 2;
204 memcpy(data, fqdn, len);
210 const struct sockaddr_in *inaddr = &dsi->server;
212 if (inaddr->sin_port == htons(DSI_AFPOVERTCP_PORT)) {
213 *data++ = 6; /* length */
214 *data++ = 0x01; /* basic ip address */
215 memcpy(data, &inaddr->sin_addr.s_addr,
216 sizeof(inaddr->sin_addr.s_addr));
217 data += sizeof(inaddr->sin_addr.s_addr);
219 /* ip address + port */
221 *data++ = 0x02; /* ip address with port */
222 memcpy(data, &inaddr->sin_addr.s_addr,
223 sizeof(inaddr->sin_addr.s_addr));
224 data += sizeof(inaddr->sin_addr.s_addr);
225 memcpy(data, &inaddr->sin_port, sizeof(inaddr->sin_port));
226 data += sizeof(inaddr->sin_port);
232 const struct sockaddr_at *ddpaddr = atp_sockaddr(asp->asp_atp);
236 *data++ = 0x03; /* ddp address */
237 memcpy(data, &ddpaddr->sat_addr.s_net, sizeof(ddpaddr->sat_addr.s_net));
238 data += sizeof(ddpaddr->sat_addr.s_net);
239 memcpy(data, &ddpaddr->sat_addr.s_node,
240 sizeof(ddpaddr->sat_addr.s_node));
241 data += sizeof(ddpaddr->sat_addr.s_node);
242 memcpy(data, &ddpaddr->sat_port, sizeof(ddpaddr->sat_port));
243 data += sizeof(ddpaddr->sat_port);
247 /* return length of buffer */
248 return (data - begin);
251 /* returns actual offset to signature */
252 static void status_icon(char *data, const char *icondata,
253 const int iconlen, const int sigoffset)
256 char *sigdata = data + sigoffset;
257 u_int16_t ret, status;
259 memcpy(&status, start + AFPSTATUS_ICONOFF, sizeof(status));
260 if ( icondata == NULL ) {
262 memset(start + AFPSTATUS_ICONOFF, 0, sizeof(status));
264 data += ntohs( status );
265 memcpy( data, icondata, iconlen);
267 ret = htons(data - start);
270 /* put in signature offset */
272 memcpy(sigdata, &ret, sizeof(ret));
275 const void status_init(AFPConfig *aspconfig, AFPConfig *dsiconfig,
276 const struct afp_options *options)
283 if (!(aspconfig || dsiconfig) || !options)
287 asp = aspconfig->obj.handle;
288 status = aspconfig->status;
293 dsi = dsiconfig->obj.handle;
295 status = dsiconfig->status;
300 * These routines must be called in order -- earlier calls
301 * set the offsets for later calls.
303 * using structs is a bad idea, but that's what the original code
304 * does. solaris, in fact, will segfault with them. so, now
305 * we just use the powers of #defines and memcpy.
307 * reply block layout (offsets are 16-bit quantities):
308 * machine type offset -> AFP version count offset ->
309 * UAM count offset -> vol icon/mask offset -> flags ->
311 * server name [padded to even boundary] -> signature offset ->
312 * network address offset ->
314 * at the appropriate offsets:
315 * machine type, afp versions, uams, server signature
316 * (16-bytes), network addresses, volume icon/mask
319 status_flags(status, options->fqdn ||
320 (dsiconfig && dsi->server.sin_addr.s_addr),
321 options->passwdbits);
322 /* returns offset to signature offset */
323 c = status_server(status, options->server ? options->server :
325 status_machine(status);
326 status_versions(status);
327 status_uams(status, options->uamlist);
328 if (options->flags & OPTION_CUSTOMICON)
329 status_icon(status, icon, sizeof(icon), c);
331 status_icon(status, apple_atalk_icon, sizeof(apple_atalk_icon), c);
333 sigoff = status_signature(status, &c, dsi, options->hostname);
336 c = status_netaddress(status, c, asp, dsi, options->fqdn);
341 asp_setstatus(asp, status, c);
342 aspconfig->signature = status + sigoff;
343 aspconfig->statuslen = c;
348 if (aspconfig) { /* copy to dsiconfig */
349 memcpy(dsiconfig->status, status, ATP_MAXDATA);
350 status = dsiconfig->status;
353 if ((options->flags & OPTION_CUSTOMICON) == 0) {
354 status_icon(status, apple_tcp_icon, sizeof(apple_tcp_icon), 0);
356 dsi_setstatus(dsi, status, c);
357 dsiconfig->signature = status + sigoff;
358 dsiconfig->statuslen = c;
362 /* this is the same as asp/dsi_getstatus */
363 int afp_getsrvrinfo(obj, ibuf, ibuflen, rbuf, rbuflen )
366 int ibuflen, *rbuflen;
368 AFPConfig *config = obj->config;
370 memcpy(rbuf, config->status, config->statuslen);
371 *rbuflen = config->statuslen;