]>
Commit | Line | Data |
---|---|---|
bcbf86ec | 1 | /* |
2 | * Author: Tatu Ylonen <ylo@cs.hut.fi> | |
3 | * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
4 | * All rights reserved | |
5 | * | |
6 | * As far as I am concerned, the code I have written for this software | |
7 | * can be used freely for any purpose. Any derived versions of this | |
8 | * software must be clearly marked as such, and if the derived work is | |
9 | * incompatible with the protocol description in the RFC file, it must be | |
10 | * called by a name other than "ssh" or "Secure Shell". | |
11 | */ | |
6a17f9c2 | 12 | /* |
5260325f | 13 | * Shared versions of debug(), log(), etc. |
bcbf86ec | 14 | * |
15 | * Copyright (c) 2000 Markus Friedl. All rights reserved. | |
16 | * | |
17 | * Redistribution and use in source and binary forms, with or without | |
18 | * modification, are permitted provided that the following conditions | |
19 | * are met: | |
20 | * 1. Redistributions of source code must retain the above copyright | |
21 | * notice, this list of conditions and the following disclaimer. | |
22 | * 2. Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in the | |
24 | * documentation and/or other materials provided with the distribution. | |
25 | * | |
26 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |
27 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
28 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |
29 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |
30 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
31 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
32 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
33 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
34 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
35 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
aa3378df | 36 | */ |
6a17f9c2 | 37 | |
38 | #include "includes.h" | |
1e3b8b07 | 39 | RCSID("$OpenBSD: log.c,v 1.12 2000/12/19 23:17:57 markus Exp $"); |
6a17f9c2 | 40 | |
41 | #include "ssh.h" | |
42 | #include "xmalloc.h" | |
43 | ||
44 | /* Fatal messages. This function never returns. */ | |
45 | ||
46 | void | |
5260325f | 47 | fatal(const char *fmt,...) |
6a17f9c2 | 48 | { |
5260325f | 49 | va_list args; |
50 | va_start(args, fmt); | |
51 | do_log(SYSLOG_LEVEL_FATAL, fmt, args); | |
52 | va_end(args); | |
53 | fatal_cleanup(); | |
6a17f9c2 | 54 | } |
55 | ||
56 | /* Error messages that should be logged. */ | |
57 | ||
58 | void | |
5260325f | 59 | error(const char *fmt,...) |
6a17f9c2 | 60 | { |
5260325f | 61 | va_list args; |
62 | va_start(args, fmt); | |
63 | do_log(SYSLOG_LEVEL_ERROR, fmt, args); | |
64 | va_end(args); | |
6a17f9c2 | 65 | } |
66 | ||
67 | /* Log this message (information that usually should go to the log). */ | |
68 | ||
69 | void | |
5260325f | 70 | log(const char *fmt,...) |
6a17f9c2 | 71 | { |
5260325f | 72 | va_list args; |
73 | va_start(args, fmt); | |
74 | do_log(SYSLOG_LEVEL_INFO, fmt, args); | |
75 | va_end(args); | |
6a17f9c2 | 76 | } |
77 | ||
78 | /* More detailed messages (information that does not need to go to the log). */ | |
79 | ||
80 | void | |
5260325f | 81 | verbose(const char *fmt,...) |
6a17f9c2 | 82 | { |
5260325f | 83 | va_list args; |
84 | va_start(args, fmt); | |
85 | do_log(SYSLOG_LEVEL_VERBOSE, fmt, args); | |
86 | va_end(args); | |
6a17f9c2 | 87 | } |
88 | ||
89 | /* Debugging messages that should not be logged during normal operation. */ | |
90 | ||
91 | void | |
5260325f | 92 | debug(const char *fmt,...) |
6a17f9c2 | 93 | { |
5260325f | 94 | va_list args; |
95 | va_start(args, fmt); | |
bcbf86ec | 96 | do_log(SYSLOG_LEVEL_DEBUG1, fmt, args); |
97 | va_end(args); | |
98 | } | |
99 | ||
100 | void | |
101 | debug2(const char *fmt,...) | |
102 | { | |
103 | va_list args; | |
104 | va_start(args, fmt); | |
105 | do_log(SYSLOG_LEVEL_DEBUG2, fmt, args); | |
106 | va_end(args); | |
107 | } | |
108 | ||
109 | void | |
110 | debug3(const char *fmt,...) | |
111 | { | |
112 | va_list args; | |
113 | va_start(args, fmt); | |
114 | do_log(SYSLOG_LEVEL_DEBUG3, fmt, args); | |
5260325f | 115 | va_end(args); |
6a17f9c2 | 116 | } |
117 | ||
118 | /* Fatal cleanup */ | |
119 | ||
5260325f | 120 | struct fatal_cleanup { |
121 | struct fatal_cleanup *next; | |
122 | void (*proc) (void *); | |
123 | void *context; | |
6a17f9c2 | 124 | }; |
125 | ||
126 | static struct fatal_cleanup *fatal_cleanups = NULL; | |
127 | ||
128 | /* Registers a cleanup function to be called by fatal() before exiting. */ | |
129 | ||
130 | void | |
5260325f | 131 | fatal_add_cleanup(void (*proc) (void *), void *context) |
6a17f9c2 | 132 | { |
5260325f | 133 | struct fatal_cleanup *cu; |
6a17f9c2 | 134 | |
5260325f | 135 | cu = xmalloc(sizeof(*cu)); |
136 | cu->proc = proc; | |
137 | cu->context = context; | |
138 | cu->next = fatal_cleanups; | |
139 | fatal_cleanups = cu; | |
6a17f9c2 | 140 | } |
141 | ||
142 | /* Removes a cleanup frunction to be called at fatal(). */ | |
143 | ||
144 | void | |
5260325f | 145 | fatal_remove_cleanup(void (*proc) (void *context), void *context) |
6a17f9c2 | 146 | { |
5260325f | 147 | struct fatal_cleanup **cup, *cu; |
148 | ||
149 | for (cup = &fatal_cleanups; *cup; cup = &cu->next) { | |
150 | cu = *cup; | |
151 | if (cu->proc == proc && cu->context == context) { | |
152 | *cup = cu->next; | |
153 | xfree(cu); | |
154 | return; | |
155 | } | |
6a17f9c2 | 156 | } |
5260325f | 157 | fatal("fatal_remove_cleanup: no such cleanup function: 0x%lx 0x%lx\n", |
1e3b8b07 | 158 | (u_long) proc, (u_long) context); |
6a17f9c2 | 159 | } |
160 | ||
161 | /* Cleanup and exit */ | |
162 | void | |
163 | fatal_cleanup(void) | |
164 | { | |
5260325f | 165 | struct fatal_cleanup *cu, *next_cu; |
166 | static int called = 0; | |
167 | ||
168 | if (called) | |
169 | exit(255); | |
170 | called = 1; | |
171 | /* Call cleanup functions. */ | |
172 | for (cu = fatal_cleanups; cu; cu = next_cu) { | |
173 | next_cu = cu->next; | |
174 | debug("Calling cleanup 0x%lx(0x%lx)", | |
1e3b8b07 | 175 | (u_long) cu->proc, (u_long) cu->context); |
5260325f | 176 | (*cu->proc) (cu->context); |
177 | } | |
178 | exit(255); | |
6a17f9c2 | 179 | } |
9d6b7add | 180 | |
181 | /* textual representation of log-facilities/levels */ | |
182 | ||
5260325f | 183 | static struct { |
184 | const char *name; | |
185 | SyslogFacility val; | |
186 | } log_facilities[] = { | |
187 | { "DAEMON", SYSLOG_FACILITY_DAEMON }, | |
188 | { "USER", SYSLOG_FACILITY_USER }, | |
189 | { "AUTH", SYSLOG_FACILITY_AUTH }, | |
57ce3f00 | 190 | #ifdef LOG_AUTHPRIV |
191 | { "AUTHPRIV", SYSLOG_FACILITY_AUTHPRIV }, | |
192 | #endif | |
5260325f | 193 | { "LOCAL0", SYSLOG_FACILITY_LOCAL0 }, |
194 | { "LOCAL1", SYSLOG_FACILITY_LOCAL1 }, | |
195 | { "LOCAL2", SYSLOG_FACILITY_LOCAL2 }, | |
196 | { "LOCAL3", SYSLOG_FACILITY_LOCAL3 }, | |
197 | { "LOCAL4", SYSLOG_FACILITY_LOCAL4 }, | |
198 | { "LOCAL5", SYSLOG_FACILITY_LOCAL5 }, | |
199 | { "LOCAL6", SYSLOG_FACILITY_LOCAL6 }, | |
200 | { "LOCAL7", SYSLOG_FACILITY_LOCAL7 }, | |
201 | { NULL, 0 } | |
9d6b7add | 202 | }; |
203 | ||
5260325f | 204 | static struct { |
205 | const char *name; | |
206 | LogLevel val; | |
9d6b7add | 207 | } log_levels[] = |
208 | { | |
5260325f | 209 | { "QUIET", SYSLOG_LEVEL_QUIET }, |
210 | { "FATAL", SYSLOG_LEVEL_FATAL }, | |
211 | { "ERROR", SYSLOG_LEVEL_ERROR }, | |
212 | { "INFO", SYSLOG_LEVEL_INFO }, | |
213 | { "VERBOSE", SYSLOG_LEVEL_VERBOSE }, | |
94ec8c6b | 214 | { "DEBUG", SYSLOG_LEVEL_DEBUG1 }, |
bcbf86ec | 215 | { "DEBUG1", SYSLOG_LEVEL_DEBUG1 }, |
216 | { "DEBUG2", SYSLOG_LEVEL_DEBUG2 }, | |
217 | { "DEBUG3", SYSLOG_LEVEL_DEBUG3 }, | |
5260325f | 218 | { NULL, 0 } |
9d6b7add | 219 | }; |
220 | ||
221 | SyslogFacility | |
222 | log_facility_number(char *name) | |
223 | { | |
5260325f | 224 | int i; |
225 | if (name != NULL) | |
226 | for (i = 0; log_facilities[i].name; i++) | |
227 | if (strcasecmp(log_facilities[i].name, name) == 0) | |
228 | return log_facilities[i].val; | |
229 | return (SyslogFacility) - 1; | |
9d6b7add | 230 | } |
231 | ||
232 | LogLevel | |
233 | log_level_number(char *name) | |
234 | { | |
5260325f | 235 | int i; |
236 | if (name != NULL) | |
237 | for (i = 0; log_levels[i].name; i++) | |
238 | if (strcasecmp(log_levels[i].name, name) == 0) | |
239 | return log_levels[i].val; | |
240 | return (LogLevel) - 1; | |
9d6b7add | 241 | } |