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, 2001, 2002 Kern Sibbald and John Walker
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 OK_msg[] = "1000 OK\n";
53 * Call appropriate processing routine
54 * If it is not a Jmsg or a ReqCat message,
55 * return it to the caller.
57 * This routine is called to get the next message from
58 * another daemon. If the message is in canonical message
59 * format and the type is known, it will be dispatched
60 * to the appropriate handler. If the message is
61 * in any other format, it will be returned.
63 * E.g. any message beginning with a digit will be returned.
64 * any message beginning with Jmsg will be processed.
67 int bget_dirmsg(BSOCK *bs)
70 char Job[MAX_NAME_LENGTH];
78 Dmsg2(120, "bget_dirmsg %d: %s\n", n, bs->msg);
80 if (is_bnet_stop(bs)) {
81 return n; /* error or terminate */
83 if (n == BNET_SIGNAL) { /* handle signal */
84 /* BNET_SIGNAL (-1) return from bnet_recv() => network signal */
86 case BNET_EOD: /* end of data */
89 bnet_fsend(bs, OK_msg);/* send response */
90 return n; /* end of data */
95 bnet_fsend(bs, OK_msg); /* send response */
98 /* Dmsg0(000, "Got heartbeat.\n"); */
100 case BNET_HB_RESPONSE:
103 /* *****FIXME***** Implement more completely */
104 bnet_fsend(bs, "Status OK\n");
105 bnet_sig(bs, BNET_EOD);
108 Emsg1(M_WARNING, 0, _("bget_dirmsg: unknown bnet signal %d\n"), bs->msglen);
114 /* Handle normal data */
116 if (n > 0 && B_ISDIGIT(bs->msg[0])) { /* response? */
117 return n; /* yes, return it */
121 * If we get here, it must be a request. Either
122 * a message to dispatch, or a catalog request.
125 if (sscanf(bs->msg, "%020s Job=%127s ", MsgType, Job) != 2) {
126 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
129 if (!(jcr=get_jcr_by_full_name(Job))) {
130 Emsg1(M_ERROR, 0, _("Job not found: %s\n"), bs->msg);
133 Dmsg1(200, "Getmsg got jcr 0x%x\n", jcr);
135 /* Skip past "Jmsg Job=nnn" */
136 if (!(msg=find_msg_start(bs->msg))) {
137 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
143 * Here we are expecting a message of the following format:
144 * Jmsg Job=nnn type=nnn level=nnn Message-string
146 if (bs->msg[0] == 'J') { /* Job message */
147 if (sscanf(bs->msg, "Jmsg Job=%127s type=%d level=%d",
148 Job, &type, &level) != 3) {
149 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
153 Dmsg1(120, "Got msg: %s\n", bs->msg);
155 skip_nonspaces(&msg); /* skip type=nnn */
157 skip_nonspaces(&msg); /* skip level=nnn */
159 msg++; /* skip leading space */
161 Dmsg1(120, "Dispatch msg: %s", msg);
162 dispatch_message(jcr, type, level, msg);
167 * Here we expact a CatReq message
168 * CatReq Job=nn Catalog-Request-Message
170 if (bs->msg[0] == 'C') { /* Catalog request */
171 Dmsg2(120, "Catalog req jcr 0x%x: %s", jcr, bs->msg);
172 catalog_request(jcr, bs, msg);
173 Dmsg1(200, "Calling freejcr 0x%x\n", jcr);
177 if (bs->msg[0] == 'U') { /* Catalog update */
178 Dmsg2(120, "Catalog upd jcr 0x%x: %s", jcr, bs->msg);
179 catalog_update(jcr, bs, msg);
180 Dmsg1(200, "Calling freejcr 0x%x\n", jcr);
184 if (bs->msg[0] == 'M') { /* Mount request */
185 Dmsg1(120, "Mount req: %s", bs->msg);
186 mount_request(jcr, bs, msg);
194 static char *find_msg_start(char *msg)
198 skip_nonspaces(&p); /* skip message type */
200 skip_nonspaces(&p); /* skip Job */
201 skip_spaces(&p); /* after spaces come the message */
206 * Get response from File daemon to a command we
207 * sent. Check that the response agrees with what we expect.
209 * Returns: 0 on failure
212 int response(JCR *jcr, BSOCK *fd, char *resp, char *cmd, e_prtmsg prtmsg)
216 if (is_bnet_error(fd)) {
219 if ((n = bget_dirmsg(fd)) >= 0) {
221 if (strcmp(fd->msg, resp) == 0) {
224 if (prtmsg == DISPLAY_ERROR) {
225 Jmsg(jcr, M_FATAL, 0, _("FD gave bad response to %s command: wanted %s got: %s\n"),
230 Jmsg(jcr, M_FATAL, 0, _("Socket error from Filed on %s command: ERR=%s\n"),
231 cmd, bnet_strerror(fd));