Annotation of embedaddon/sudo/include/sudo_debug.h, revision 1.1.1.1
1.1 misho 1: /*
2: * Copyright (c) 2011 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: */
16:
17: #ifndef _SUDO_DEBUG_H
18: #define _SUDO_DEBUG_H
19:
20: #include <stdarg.h>
21:
22: /*
23: * The priority and subsystem are encoded in a single 32-bit value.
24: * The lower 4 bits are the priority and the top 26 bits are the subsystem.
25: * This allows for 16 priorities and a very large number of subsystems.
26: * Bit 5 is used as a flag to specify whether to log the errno value.
27: * Bit 6 specifies whether to log the function, file and line number data.
28: */
29:
30: /*
31: * Sudo debug priorities, ordered least to most verbose,
32: * in other words, highest to lowest priority. Max pri is 15.
33: * Note: order must match sudo_debug_priorities[]
34: */
35: #define SUDO_DEBUG_CRIT 1 /* critical errors */
36: #define SUDO_DEBUG_ERROR 2 /* non-critical errors */
37: #define SUDO_DEBUG_WARN 3 /* non-fatal warnings */
38: #define SUDO_DEBUG_NOTICE 4 /* non-error condition notices */
39: #define SUDO_DEBUG_DIAG 5 /* diagnostic messages */
40: #define SUDO_DEBUG_INFO 6 /* informational message */
41: #define SUDO_DEBUG_TRACE 7 /* log function enter/exit */
42: #define SUDO_DEBUG_DEBUG 8 /* very verbose debugging */
43:
44: /*
45: * Sudo debug subsystems.
46: * This includes subsystems in the sudoers plugin.
47: * Note: order must match sudo_debug_subsystems[]
48: */
49: #define SUDO_DEBUG_MAIN ( 1<<6) /* sudo main() */
50: #define SUDO_DEBUG_ARGS ( 2<<6) /* command line argument processing */
51: #define SUDO_DEBUG_EXEC ( 3<<6) /* command execution */
52: #define SUDO_DEBUG_PTY ( 4<<6) /* pseudo-tty */
53: #define SUDO_DEBUG_UTMP ( 5<<6) /* utmp file ops */
54: #define SUDO_DEBUG_CONV ( 6<<6) /* user conversation */
55: #define SUDO_DEBUG_PCOMM ( 7<<6) /* plugin communications */
56: #define SUDO_DEBUG_UTIL ( 8<<6) /* utility functions */
57: #define SUDO_DEBUG_NETIF ( 9<<6) /* network interface functions */
58: #define SUDO_DEBUG_AUDIT (10<<6) /* audit */
59: #define SUDO_DEBUG_EDIT (11<<6) /* sudoedit */
60: #define SUDO_DEBUG_SELINUX (12<<6) /* selinux */
61: #define SUDO_DEBUG_LDAP (13<<6) /* sudoers LDAP */
62: #define SUDO_DEBUG_MATCH (14<<6) /* sudoers matching */
63: #define SUDO_DEBUG_PARSER (15<<6) /* sudoers parser */
64: #define SUDO_DEBUG_ALIAS (16<<6) /* sudoers alias functions */
65: #define SUDO_DEBUG_DEFAULTS (17<<6) /* sudoers defaults settings */
66: #define SUDO_DEBUG_AUTH (18<<6) /* authentication functions */
67: #define SUDO_DEBUG_ENV (19<<6) /* environment handling */
68: #define SUDO_DEBUG_LOGGING (20<<6) /* logging functions */
69: #define SUDO_DEBUG_NSS (21<<6) /* network service switch */
70: #define SUDO_DEBUG_RBTREE (22<<6) /* red-black tree functions */
71: #define SUDO_DEBUG_PERMS (23<<6) /* uid/gid swapping functions */
72: #define SUDO_DEBUG_PLUGIN (24<<6) /* main plugin functions */
73: #define SUDO_DEBUG_HOOKS (25<<6) /* hook functions */
74: #define SUDO_DEBUG_ALL 0xfff0 /* all subsystems */
75:
76: /* Flag to include string version of errno in debug info. */
77: #define SUDO_DEBUG_ERRNO (1<<4)
78:
79: /* Flag to include function, file and line number in debug info. */
80: #define SUDO_DEBUG_LINENO (1<<5)
81:
82: /* Extract priority and convert to an index. */
83: #define SUDO_DEBUG_PRI(n) (((n) & 0xf) - 1)
84:
85: /* Extract subsystem and convert to an index. */
86: #define SUDO_DEBUG_SUBSYS(n) (((n) >> 6) - 1)
87:
88: /*
89: * Wrapper for sudo_debug_enter() that declares __func__ as needed
90: * and sets sudo_debug_subsys for sudo_debug_exit().
91: */
92: #ifdef HAVE___FUNC__
93: # define debug_decl(funcname, subsys) \
94: const int sudo_debug_subsys = (subsys); \
95: sudo_debug_enter(__func__, __FILE__, __LINE__, sudo_debug_subsys);
96: #else
97: # define debug_decl(funcname, subsys) \
98: const int sudo_debug_subsys = (subsys); \
99: const char *__func__ = #funcname; \
100: sudo_debug_enter(__func__, __FILE__, __LINE__, sudo_debug_subsys);
101: #endif
102:
103: /*
104: * Wrappers for sudo_debug_exit() and friends.
105: */
106: #define debug_return \
107: do { \
108: sudo_debug_exit(__func__, __FILE__, __LINE__, sudo_debug_subsys); \
109: return; \
110: } while (0)
111:
112: #define debug_return_int(rval) \
113: do { \
114: int sudo_debug_rval = (rval); \
115: sudo_debug_exit_int(__func__, __FILE__, __LINE__, sudo_debug_subsys, \
116: sudo_debug_rval); \
117: return sudo_debug_rval; \
118: } while (0)
119:
120: #define debug_return_size_t(rval) \
121: do { \
122: size_t sudo_debug_rval = (rval); \
123: sudo_debug_exit_size_t(__func__, __FILE__, __LINE__, sudo_debug_subsys,\
124: sudo_debug_rval); \
125: return sudo_debug_rval; \
126: } while (0)
127:
128: #define debug_return_long(rval) \
129: do { \
130: long sudo_debug_rval = (rval); \
131: sudo_debug_exit_long(__func__, __FILE__, __LINE__, sudo_debug_subsys, \
132: sudo_debug_rval); \
133: return sudo_debug_rval; \
134: } while (0)
135:
136: #define debug_return_bool(rval) \
137: do { \
138: int sudo_debug_rval = (rval); \
139: sudo_debug_exit_bool(__func__, __FILE__, __LINE__, sudo_debug_subsys, \
140: sudo_debug_rval); \
141: return sudo_debug_rval; \
142: } while (0)
143:
144: #define debug_return_str(rval) \
145: do { \
146: const char *sudo_debug_rval = (rval); \
147: sudo_debug_exit_str(__func__, __FILE__, __LINE__, sudo_debug_subsys, \
148: sudo_debug_rval); \
149: return (char *)sudo_debug_rval; \
150: } while (0)
151:
152: #define debug_return_str_masked(rval) \
153: do { \
154: const char *sudo_debug_rval = (rval); \
155: sudo_debug_exit_str_masked(__func__, __FILE__, __LINE__, \
156: sudo_debug_subsys, sudo_debug_rval); \
157: return (char *)sudo_debug_rval; \
158: } while (0)
159:
160: #define debug_return_ptr(rval) \
161: do { \
162: const void *sudo_debug_rval = (rval); \
163: sudo_debug_exit_ptr(__func__, __FILE__, __LINE__, sudo_debug_subsys, \
164: sudo_debug_rval); \
165: return (void *)sudo_debug_rval; \
166: } while (0)
167:
168: /*
169: * Variadic macros are a C99 feature but GNU cpp has supported
170: * a (different) version of them for a long time.
171: */
172: #if defined(__GNUC__) && __GNUC__ == 2
173: # define sudo_debug_printf(pri, fmt...) \
174: sudo_debug_printf2(__func__, __FILE__, __LINE__, (pri)|sudo_debug_subsys, \
175: (fmt))
176: #else
177: # define sudo_debug_printf(pri, ...) \
178: sudo_debug_printf2(__func__, __FILE__, __LINE__, (pri)|sudo_debug_subsys, \
179: __VA_ARGS__)
180: #endif
181:
182: #define sudo_debug_execve(pri, path, argv, envp) \
183: sudo_debug_execve2((pri)|sudo_debug_subsys, (path), (argv), (envp))
184:
185: /*
186: * NULL-terminated string lists of priorities and subsystems.
187: */
188: extern const char *const sudo_debug_priorities[];
189: extern const char *const sudo_debug_subsystems[];
190:
191: void sudo_debug_enter(const char *func, const char *file, int line, int subsys);
192: void sudo_debug_execve2(int level, const char *path, char *const argv[], char *const envp[]);
193: void sudo_debug_exit(const char *func, const char *file, int line, int subsys);
194: void sudo_debug_exit_int(const char *func, const char *file, int line, int subsys, int rval);
195: void sudo_debug_exit_long(const char *func, const char *file, int line, int subsys, long rval);
196: void sudo_debug_exit_size_t(const char *func, const char *file, int line, int subsys, size_t rval);
197: void sudo_debug_exit_bool(const char *func, const char *file, int line, int subsys, int rval);
198: void sudo_debug_exit_str(const char *func, const char *file, int line, int subsys, const char *rval);
199: void sudo_debug_exit_str_masked(const char *func, const char *file, int line, int subsys, const char *rval);
200: void sudo_debug_exit_ptr(const char *func, const char *file, int line, int subsys, const void *rval);
201: int sudo_debug_fd_set(int fd);
202: int sudo_debug_init(const char *debugfile, const char *settings);
203: void sudo_debug_printf2(const char *func, const char *file, int line, int level, const char *format, ...) __printflike(5, 6);
204: void sudo_debug_write(const char *str, int len, int errno_val);
205: void sudo_debug_write2(const char *func, const char *file, int line, const char *str, int len, int errno_val);
206: pid_t sudo_debug_fork(void);
207:
208: #endif /* _SUDO_DEBUG_H */
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