3 * Bacula Director -- routines to receive network data and
4 * handle network signals. These routines handle the connections
5 * to the Storage daemon and the File daemon.
7 * Kern Sibbald, August MM
9 * This routine runs as a thread and must be thread reentrant.
11 * Basic tasks done here:
12 * Handle network signals (signals).
13 * Signals always have return status 0 from bnet_recv() and
14 * a zero or negative message length.
15 * Pass appropriate messages back to the caller (responses).
16 * Responses always have a digit as the first character.
17 * Handle requests for message and catalog services (requests).
18 * Requests are any message that does not begin with a digit.
19 * In affect, they are commands.
24 Copyright (C) 2000-2005 Kern Sibbald
26 This program is free software; you can redistribute it and/or
27 modify it under the terms of the GNU General Public License as
28 published by the Free Software Foundation; either version 2 of
29 the License, or (at your option) any later version.
31 This program is distributed in the hope that it will be useful,
32 but WITHOUT ANY WARRANTY; without even the implied warranty of
33 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
34 General Public License for more details.
36 You should have received a copy of the GNU General Public
37 License along with this program; if not, write to the Free
38 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
46 /* Forward referenced functions */
47 static char *find_msg_start(char *msg);
49 static char Job_status[] = "Status Job=%127s JobStatus=%d\n";
51 static char Device_update[] = "DevUpd Job=%127s "
53 "append=%d read=%d num_writers=%d "
54 "open=%d labeled=%d offline=%d "
55 "reserved=%d max_writers=%d "
56 "autoselect=%d autochanger=%d "
57 "changer_name=%127s media_type=%127s volume_name=%127s\n";
61 static char OK_msg[] = "1000 OK\n";
65 * Call appropriate processing routine
66 * If it is not a Jmsg or a ReqCat message,
67 * return it to the caller.
69 * This routine is called to get the next message from
70 * another daemon. If the message is in canonical message
71 * format and the type is known, it will be dispatched
72 * to the appropriate handler. If the message is
73 * in any other format, it will be returned.
75 * E.g. any message beginning with a digit will be passed
76 * through to the caller.
77 * All other messages are expected begin with some identifier
78 * -- for the moment only the first character is checked, but
79 * at a later time, the whole identifier (e.g. Jmsg, CatReq, ...)
80 * could be checked. This is followed by Job=Jobname <user-defined>
81 * info. The identifier is used to dispatch the message to the right
82 * place (Job message, catalog request, ...). The Job is used to lookup
83 * the JCR so that the action is performed on the correct jcr, and
84 * the rest of the message is up to the user. Note, DevUpd uses
85 * *System* for the Job name, and hence no JCR is obtained. This
86 * is a *rare* case where a jcr is not really needed.
89 int bget_dirmsg(BSOCK *bs)
92 char Job[MAX_NAME_LENGTH];
100 Dmsg2(900, "bget_dirmsg %d: %s", n, bs->msg);
102 if (is_bnet_stop(bs)) {
103 return n; /* error or terminate */
105 if (n == BNET_SIGNAL) { /* handle signal */
106 /* BNET_SIGNAL (-1) return from bnet_recv() => network signal */
107 switch (bs->msglen) {
108 case BNET_EOD: /* end of data */
111 bnet_fsend(bs, OK_msg);/* send response */
112 return n; /* end of data */
117 bnet_fsend(bs, OK_msg); /* send response */
120 // encode_time(time(NULL), Job);
121 // Dmsg1(100, "%s got heartbeat.\n", Job);
123 case BNET_HB_RESPONSE:
126 /* *****FIXME***** Implement more completely */
127 bnet_fsend(bs, "Status OK\n");
128 bnet_sig(bs, BNET_EOD);
130 case BNET_BTIME: /* send Bacula time */
132 bnet_fsend(bs, "btime %s\n", edit_uint64(get_current_btime(),ed1));
135 Emsg1(M_WARNING, 0, _("bget_dirmsg: unknown bnet signal %d\n"), bs->msglen);
141 /* Handle normal data */
143 if (n > 0 && B_ISDIGIT(bs->msg[0])) { /* response? */
144 return n; /* yes, return it */
148 * If we get here, it must be a request. Either
149 * a message to dispatch, or a catalog request.
152 if (sscanf(bs->msg, "%020s Job=%127s ", MsgType, Job) != 2) {
153 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
156 if (strcmp(Job, "*System*") == 0) {
157 jcr = NULL; /* No jcr */
158 } else if (!(jcr=get_jcr_by_full_name(Job))) {
159 Emsg1(M_ERROR, 0, _("Job not found: %s\n"), bs->msg);
162 Dmsg1(900, "Getmsg got jcr 0x%x\n", jcr);
164 /* Skip past "Jmsg Job=nnn" */
165 if (!(msg=find_msg_start(bs->msg))) {
166 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
172 * Here we are expecting a message of the following format:
173 * Jmsg Job=nnn type=nnn level=nnn Message-string
175 if (bs->msg[0] == 'J') { /* Job message */
176 if (sscanf(bs->msg, "Jmsg Job=%127s type=%d level=%d",
177 Job, &type, &level) != 3) {
178 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
182 Dmsg1(900, "Got msg: %s\n", bs->msg);
184 skip_nonspaces(&msg); /* skip type=nnn */
186 skip_nonspaces(&msg); /* skip level=nnn */
188 msg++; /* skip leading space */
190 Dmsg1(900, "Dispatch msg: %s", msg);
191 dispatch_message(jcr, type, level, msg);
196 * Here we expact a CatReq message
197 * CatReq Job=nn Catalog-Request-Message
199 if (bs->msg[0] == 'C') { /* Catalog request */
200 Dmsg2(900, "Catalog req jcr 0x%x: %s", jcr, bs->msg);
201 catalog_request(jcr, bs, msg);
202 Dmsg1(900, "Calling freejcr 0x%x\n", jcr);
206 if (bs->msg[0] == 'U') { /* Catalog update */
207 Dmsg2(900, "Catalog upd jcr 0x%x: %s", jcr, bs->msg);
208 catalog_update(jcr, bs, msg);
209 Dmsg1(900, "Calling freejcr 0x%x\n", jcr);
213 if (bs->msg[0] == 'M') { /* Mount request */
214 Dmsg1(900, "Mount req: %s", bs->msg);
215 mount_request(jcr, bs, msg);
219 if (bs->msg[0] == 'S') { /* Status change */
221 char Job[MAX_NAME_LENGTH];
222 if (sscanf(bs->msg, Job_status, &Job, &JobStatus) == 2) {
223 jcr->SDJobStatus = JobStatus; /* current status */
225 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
231 /* No JCR for Device Updates! */
232 if (bs->msg[0] = 'D') { /* Device update */
234 POOL_MEM dev_name, changer_name, media_type, volume_name;
235 int dev_open, dev_append, dev_read, dev_labeled;
236 int dev_offline, dev_autochanger, dev_autoselect;
237 int dev_num_writers, dev_max_writers, dev_reserved;
239 Dmsg1(100, "<stored: %s", bs->msg);
240 if (sscanf(bs->msg, Device_update,
241 &Job, dev_name.c_str(),
242 &dev_append, &dev_read,
243 &dev_num_writers, &dev_open,
244 &dev_labeled, &dev_offline, &dev_reserved,
245 &dev_max_writers, &dev_autoselect,
247 changer_name.c_str(), media_type.c_str(),
248 volume_name.c_str()) != 15) {
249 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
251 unbash_spaces(dev_name);
252 dev = (DEVICE *)GetResWithName(R_DEVICE, dev_name.c_str());
256 unbash_spaces(changer_name);
257 unbash_spaces(media_type);
258 unbash_spaces(volume_name);
259 bstrncpy(dev->ChangerName, changer_name.c_str(), sizeof(dev->ChangerName));
260 bstrncpy(dev->MediaType, media_type.c_str(), sizeof(dev->MediaType));
261 bstrncpy(dev->VolumeName, volume_name.c_str(), sizeof(dev->VolumeName));
262 /* Note, these are copied because they are boolean rather than
265 dev->open = dev_open;
266 dev->append = dev_append;
267 dev->read = dev_read;
268 dev->labeled = dev_labeled;
269 dev->offline = dev_offline;
270 dev->autoselect = dev_autoselect;
271 dev->autochanger = dev_autochanger > 0;
272 dev->num_drives = dev_autochanger; /* does double duty */
273 dev->PoolId = dev_PoolId;
274 dev->num_writers = dev_num_writers;
275 dev->max_writers = dev_max_writers;
276 dev->reserved = dev_reserved;
286 static char *find_msg_start(char *msg)
290 skip_nonspaces(&p); /* skip message type */
292 skip_nonspaces(&p); /* skip Job */
293 skip_spaces(&p); /* after spaces come the message */
298 * Get response from FD or SD to a command we
299 * sent. Check that the response agrees with what we expect.
301 * Returns: false on failure
304 bool response(JCR *jcr, BSOCK *bs, char *resp, const char *cmd, e_prtmsg prtmsg)
308 if (is_bnet_error(bs)) {
311 if ((n = bget_dirmsg(bs)) >= 0) {
313 if (strcmp(bs->msg, resp) == 0) {
316 Dmsg1(900, "Bad response: ERR=%s", bs->msg);
317 if (prtmsg == DISPLAY_ERROR) {
318 Jmsg(jcr, M_FATAL, 0, _("Bad response to %s command: wanted %s got: %s\n"),
323 Jmsg(jcr, M_FATAL, 0, _("Socket error on %s command: ERR=%s\n"),
324 cmd, bnet_strerror(bs));