Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 : Samba utility functions
4 : Copyright (C) Andrew Bartlett 2011
5 : Copyright (C) Andrew Tridgell 1992-2002
6 :
7 : This program is free software; you can redistribute it and/or modify
8 : it under the terms of the GNU General Public License as published by
9 : the Free Software Foundation; either version 3 of the License, or
10 : (at your option) any later version.
11 :
12 : This program is distributed in the hope that it will be useful,
13 : but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : GNU General Public License for more details.
16 :
17 : You should have received a copy of the GNU General Public License
18 : along with this program. If not, see <http://www.gnu.org/licenses/>.
19 : */
20 :
21 : #include "includes.h"
22 : #include "lib/util/server_id.h"
23 : #include "librpc/gen_ndr/messaging.h"
24 : #include "messages.h"
25 : #include "lib/util/memory.h"
26 :
27 : /* This is the Samba3-specific implementation of reopen_logs(), which
28 : * calls out to the s3 loadparm code, and means that we don't depend
29 : * on loadparm directly. */
30 :
31 155322 : bool reopen_logs(void)
32 : {
33 155322 : if (lp_loaded()) {
34 1397898 : struct debug_settings settings = {
35 155322 : .max_log_size = lp_max_log_size(),
36 155322 : .timestamp_logs = lp_timestamp_logs(),
37 155322 : .debug_prefix_timestamp = lp_debug_prefix_timestamp(),
38 155322 : .debug_hires_timestamp = lp_debug_hires_timestamp(),
39 155322 : .debug_syslog_format = lp_debug_syslog_format(),
40 155322 : .debug_pid = lp_debug_pid(),
41 155322 : .debug_uid = lp_debug_uid(),
42 155322 : .debug_class = lp_debug_class(),
43 : };
44 3835 : const struct loadparm_substitution *lp_sub =
45 155322 : loadparm_s3_global_substitution();
46 :
47 155322 : debug_set_logfile(lp_logfile(talloc_tos(), lp_sub));
48 155322 : debug_parse_levels(lp_log_level(talloc_tos(), lp_sub));
49 310644 : debug_set_settings(&settings,
50 155322 : lp_logging(talloc_tos(), lp_sub),
51 : lp_syslog(),
52 155322 : lp_syslog_only());
53 : } else {
54 : /*
55 : * Parameters are not yet loaded - configure debugging with
56 : * reasonable defaults to enable logging for early
57 : * startup failures.
58 : */
59 0 : struct debug_settings settings = {
60 : .max_log_size = 5000,
61 : .timestamp_logs = true,
62 : .debug_prefix_timestamp = false,
63 : .debug_hires_timestamp = true,
64 : .debug_syslog_format = false,
65 : .debug_pid = false,
66 : .debug_uid = false,
67 : .debug_class = false,
68 : };
69 0 : debug_set_settings(&settings,
70 : "file",
71 : 1,
72 : false);
73 : }
74 155322 : return reopen_logs_internal();
75 : }
76 :
77 : /****************************************************************************
78 : Receive a "set debug level" message.
79 : ****************************************************************************/
80 :
81 0 : void debug_message(struct messaging_context *msg_ctx,
82 : void *private_data,
83 : uint32_t msg_type,
84 : struct server_id src,
85 : DATA_BLOB *data)
86 : {
87 0 : const char *params_str = (const char *)data->data;
88 :
89 : /* Check, it's a proper string! */
90 0 : if (params_str[(data->length)-1] != '\0') {
91 0 : DEBUG(1, ("Invalid debug message from pid %u to pid %u\n",
92 : (unsigned int)procid_to_pid(&src),
93 : (unsigned int)getpid()));
94 0 : return;
95 : }
96 :
97 0 : DEBUG(3, ("INFO: Remote set of debug to `%s' (pid %u from pid %u)\n",
98 : params_str, (unsigned int)getpid(),
99 : (unsigned int)procid_to_pid(&src)));
100 :
101 0 : debug_parse_levels(params_str);
102 : }
103 :
104 : /****************************************************************************
105 : Return current debug level.
106 : ****************************************************************************/
107 :
108 0 : static void debuglevel_message(struct messaging_context *msg_ctx,
109 : void *private_data,
110 : uint32_t msg_type,
111 : struct server_id src,
112 : DATA_BLOB *data)
113 : {
114 0 : char *message = debug_list_class_names_and_levels();
115 0 : struct server_id_buf tmp;
116 :
117 0 : if (!message) {
118 0 : DEBUG(0,("debuglevel_message - debug_list_class_names_and_levels returned NULL\n"));
119 0 : return;
120 : }
121 :
122 0 : DEBUG(1, ("INFO: Received REQ_DEBUGLEVEL message from PID %s\n",
123 : server_id_str_buf(src, &tmp)));
124 0 : messaging_send_buf(msg_ctx, src, MSG_DEBUGLEVEL,
125 0 : (uint8_t *)message, strlen(message) + 1);
126 :
127 0 : TALLOC_FREE(message);
128 : }
129 :
130 0 : static void debug_ringbuf_log(struct messaging_context *msg_ctx,
131 : void *private_data,
132 : uint32_t msg_type,
133 : struct server_id src,
134 : DATA_BLOB *data)
135 : {
136 0 : char *log = debug_get_ringbuf();
137 0 : size_t logsize = debug_get_ringbuf_size();
138 :
139 0 : if (log == NULL) {
140 0 : log = discard_const_p(char, "*disabled*\n");
141 0 : logsize = strlen(log) + 1;
142 : }
143 :
144 0 : messaging_send_buf(msg_ctx, src, MSG_RINGBUF_LOG, (uint8_t *)log,
145 : logsize);
146 0 : }
147 :
148 5200 : void debug_register_msgs(struct messaging_context *msg_ctx)
149 : {
150 5200 : messaging_register(msg_ctx, NULL, MSG_DEBUG, debug_message);
151 5200 : messaging_register(msg_ctx, NULL, MSG_REQ_DEBUGLEVEL,
152 : debuglevel_message);
153 5200 : messaging_register(msg_ctx, NULL, MSG_REQ_RINGBUF_LOG,
154 : debug_ringbuf_log);
155 5200 : }
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