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.
23 Copyright (C) 2000, 2001, 2002 Kern Sibbald and John Walker
25 This program is free software; you can redistribute it and/or
26 modify it under the terms of the GNU General Public License as
27 published by the Free Software Foundation; either version 2 of
28 the License, or (at your option) any later version.
30 This program is distributed in the hope that it will be useful,
31 but WITHOUT ANY WARRANTY; without even the implied warranty of
32 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
33 General Public License for more details.
35 You should have received a copy of the GNU General Public
36 License along with this program; if not, write to the Free
37 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
45 /* Forward referenced functions */
46 static char *find_msg_start(char *msg);
48 static char OK_msg[] = "1000 OK\n";
52 * Call appropriate processing routine
53 * If it is not a Jmsg or a ReqCat message,
54 * return it to the caller.
56 * This routine is called to get the next message from
57 * another daemon. If the message is in canonical message
58 * format and the type is known, it will be dispatched
59 * to the appropriate handler. If the message is
60 * in any other format, it will be returned.
63 int32_t bget_msg(BSOCK *bs, int rtn)
66 char Job[MAX_NAME_LENGTH];
74 Dmsg2(120, "bget_msg %d: %s\n", n, bs->msg);
77 return n; /* error return */
79 if (n == 0) { /* handle signal */
80 /* 0 return from bnet_recv() => network signal */
82 case BNET_EOF: /* deprecated */
83 case BNET_EOD: /* end of data */
86 bnet_fsend(bs, OK_msg); /* send response */
87 return 0; /* end of data */
92 bnet_fsend(bs, OK_msg); /* send response */
95 bnet_sig(bs, BNET_HB_RESPONSE);
98 /* *****FIXME***** Implement */
99 bnet_fsend(bs, "Status OK\n");
100 bnet_sig(bs, BNET_EOD);
103 Emsg1(M_WARNING, 0, _("bget_msg: unknown signal %d\n"), bs->msglen);
109 /* Handle normal data */
111 if (ISDIGIT(bs->msg[0])) { /* response? */
112 return n; /* yes, return it */
116 * If we get here, it must be a request. Either
117 * a message to dispatch, or a catalog request.
120 if (sscanf(bs->msg, "%020s Job=%127s ", MsgType, Job) != 2) {
121 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
124 if (!(jcr=get_jcr_by_full_name(Job))) {
125 Emsg1(M_ERROR, 0, _("Job not found: %s\n"), bs->msg);
129 /* Skip past "Jmsg Job=nnn" */
130 if (!(msg=find_msg_start(bs->msg))) {
131 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
137 * Here we are expecting a message of the following format:
138 * Jmsg Job=nnn type=nnn level=nnn Message-string
140 if (bs->msg[0] == 'J') { /* Job message */
141 if (sscanf(bs->msg, "Jmsg Job=%127s type=%d level=%d",
142 Job, &type, &level) != 3) {
143 Emsg1(M_ERROR, 0, _("Malformed message: %s\n"), bs->msg);
147 Dmsg1(120, "Got msg: %s\n", bs->msg);
149 skip_nonspaces(&msg); /* skip type=nnn */
151 skip_nonspaces(&msg); /* skip level=nnn */
153 msg++; /* skip leading space */
155 Dmsg1(120, "Dispatch msg: %s", msg);
156 dispatch_message(jcr, type, level, msg);
161 * Here we expact a CatReq message
162 * CatReq Job=nn Catalog-Request-Message
164 if (bs->msg[0] == 'C') { /* Catalog request */
165 Dmsg1(120, "Catalog req: %s", bs->msg);
166 catalog_request(jcr, bs, msg);
170 if (bs->msg[0] == 'U') { /* Catalog update */
171 catalog_update(jcr, bs, msg);
175 if (bs->msg[0] == 'M') { /* Mount request */
176 Dmsg1(120, "Mount req: %s", bs->msg);
177 mount_request(jcr, bs, msg);
185 static char *find_msg_start(char *msg)
189 skip_nonspaces(&p); /* skip message type */
191 skip_nonspaces(&p); /* skip Job */
192 skip_spaces(&p); /* after spaces come the message */
197 * Get response from File daemon to a command we
198 * sent. Check that the response agrees with what we expect.
200 * Returns: 0 on failure
203 int response(BSOCK *fd, char *resp, char *cmd)
210 if ((n = bget_msg(fd, 0)) > 0) {
212 if (strcmp(fd->msg, resp) == 0) {
215 Emsg3(M_FATAL, 0, _("<filed: bad response to %s command: wanted %s got: %s\n"),
219 Emsg2(M_FATAL, 0, _("<filed: Socket error from Filed on %s command: ERR=%s\n"),
220 cmd, bnet_strerror(fd));