1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
*
* Shared versions of debug(), log(), etc.
*
*/
#include "includes.h"
RCSID("$OpenBSD: log.c,v 1.5 1999/11/24 00:26:02 deraadt Exp $");
#include "ssh.h"
#include "xmalloc.h"
/* Fatal messages. This function never returns. */
void
fatal(const char *fmt,...)
{
va_list args;
va_start(args, fmt);
do_log(SYSLOG_LEVEL_FATAL, fmt, args);
va_end(args);
fatal_cleanup();
}
/* Error messages that should be logged. */
void
error(const char *fmt,...)
{
va_list args;
va_start(args, fmt);
do_log(SYSLOG_LEVEL_ERROR, fmt, args);
va_end(args);
}
/* Log this message (information that usually should go to the log). */
void
log(const char *fmt,...)
{
va_list args;
va_start(args, fmt);
do_log(SYSLOG_LEVEL_INFO, fmt, args);
va_end(args);
}
/* More detailed messages (information that does not need to go to the log). */
void
verbose(const char *fmt,...)
{
va_list args;
va_start(args, fmt);
do_log(SYSLOG_LEVEL_VERBOSE, fmt, args);
va_end(args);
}
/* Debugging messages that should not be logged during normal operation. */
void
debug(const char *fmt,...)
{
va_list args;
va_start(args, fmt);
do_log(SYSLOG_LEVEL_DEBUG, fmt, args);
va_end(args);
}
/* Fatal cleanup */
struct fatal_cleanup {
struct fatal_cleanup *next;
void (*proc) (void *);
void *context;
};
static struct fatal_cleanup *fatal_cleanups = NULL;
/* Registers a cleanup function to be called by fatal() before exiting. */
void
fatal_add_cleanup(void (*proc) (void *), void *context)
{
struct fatal_cleanup *cu;
cu = xmalloc(sizeof(*cu));
cu->proc = proc;
cu->context = context;
cu->next = fatal_cleanups;
fatal_cleanups = cu;
}
/* Removes a cleanup frunction to be called at fatal(). */
void
fatal_remove_cleanup(void (*proc) (void *context), void *context)
{
struct fatal_cleanup **cup, *cu;
for (cup = &fatal_cleanups; *cup; cup = &cu->next) {
cu = *cup;
if (cu->proc == proc && cu->context == context) {
*cup = cu->next;
xfree(cu);
return;
}
}
fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx\n",
(unsigned long) proc, (unsigned long) context);
}
/* Cleanup and exit */
void
fatal_cleanup(void)
{
struct fatal_cleanup *cu, *next_cu;
static int called = 0;
if (called)
exit(255);
called = 1;
/* Call cleanup functions. */
for (cu = fatal_cleanups; cu; cu = next_cu) {
next_cu = cu->next;
debug("Calling cleanup 0x%lx(0x%lx)",
(unsigned long) cu->proc, (unsigned long) cu->context);
(*cu->proc) (cu->context);
}
exit(255);
}
/* textual representation of log-facilities/levels */
static struct {
const char *name;
SyslogFacility val;
} log_facilities[] = {
{ "DAEMON", SYSLOG_FACILITY_DAEMON },
{ "USER", SYSLOG_FACILITY_USER },
{ "AUTH", SYSLOG_FACILITY_AUTH },
{ "LOCAL0", SYSLOG_FACILITY_LOCAL0 },
{ "LOCAL1", SYSLOG_FACILITY_LOCAL1 },
{ "LOCAL2", SYSLOG_FACILITY_LOCAL2 },
{ "LOCAL3", SYSLOG_FACILITY_LOCAL3 },
{ "LOCAL4", SYSLOG_FACILITY_LOCAL4 },
{ "LOCAL5", SYSLOG_FACILITY_LOCAL5 },
{ "LOCAL6", SYSLOG_FACILITY_LOCAL6 },
{ "LOCAL7", SYSLOG_FACILITY_LOCAL7 },
{ NULL, 0 }
};
static struct {
const char *name;
LogLevel val;
} log_levels[] =
{
{ "QUIET", SYSLOG_LEVEL_QUIET },
{ "FATAL", SYSLOG_LEVEL_FATAL },
{ "ERROR", SYSLOG_LEVEL_ERROR },
{ "INFO", SYSLOG_LEVEL_INFO },
{ "VERBOSE", SYSLOG_LEVEL_VERBOSE },
{ "DEBUG", SYSLOG_LEVEL_DEBUG },
{ NULL, 0 }
};
SyslogFacility
log_facility_number(char *name)
{
int i;
if (name != NULL)
for (i = 0; log_facilities[i].name; i++)
if (strcasecmp(log_facilities[i].name, name) == 0)
return log_facilities[i].val;
return (SyslogFacility) - 1;
}
LogLevel
log_level_number(char *name)
{
int i;
if (name != NULL)
for (i = 0; log_levels[i].name; i++)
if (strcasecmp(log_levels[i].name, name) == 0)
return log_levels[i].val;
return (LogLevel) - 1;
}
|
