2 * Dropbear - a SSH2 server
4 * Copyright (c) 2002,2003 Matt Johnston
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 #ifndef DROPBEAR_DBUTIL_H_
27 #define DROPBEAR_DBUTIL_H_
33 #ifndef DISABLE_SYSLOG
38 #define ATTRIB_PRINTF(fmt,args) __attribute__((format(printf, fmt, args)))
39 #define ATTRIB_NORETURN __attribute__((noreturn))
40 #define ATTRIB_SENTINEL __attribute__((sentinel))
42 #define ATTRIB_PRINTF(fmt,args)
43 #define ATTRIB_NORETURN
44 #define ATTRIB_SENTINEL
47 extern void (*_dropbear_exit
)(int exitcode
, const char* format
, va_list param
) ATTRIB_NORETURN
;
48 extern void (*_dropbear_log
)(int priority
, const char* format
, va_list param
);
50 void dropbear_exit(const char* format
, ...) ATTRIB_PRINTF(1,2) ATTRIB_NORETURN
;
52 void dropbear_close(const char* format
, ...) ATTRIB_PRINTF(1,2) ;
53 void dropbear_log(int priority
, const char* format
, ...) ATTRIB_PRINTF(2,3) ;
55 void fail_assert(const char* expr
, const char* file
, int line
) ATTRIB_NORETURN
;
58 void dropbear_trace(const char* format
, ...) ATTRIB_PRINTF(1,2);
59 void dropbear_trace2(const char* format
, ...) ATTRIB_PRINTF(1,2);
60 void printhex(const char * label
, const unsigned char * buf
, int len
);
61 void printmpint(const char *label
, mp_int
*mp
);
62 void debug_start_net();
63 extern int debug_trace
;
66 char * stripcontrol(const char * text
);
68 int spawn_command(void(*exec_fn
)(void *user_data
), void *exec_data
,
69 int *writefd
, int *readfd
, int *errfd
, pid_t
*pid
);
70 void run_shell_command(const char* cmd
, unsigned int maxfd
, char* usershell
);
71 #ifdef ENABLE_CONNECT_UNIX
72 int connect_unix(const char* addr
);
74 int buf_readfile(buffer
* buf
, const char* filename
);
75 int buf_getline(buffer
* line
, FILE * authfile
);
78 void * m_malloc(size_t size
);
79 void * m_strdup(const char * str
);
80 void * m_realloc(void* ptr
, size_t size
);
81 #define m_free(X) do {free(X); (X) = NULL;} while (0)
82 void m_burn(void* data
, unsigned int len
);
83 void setnonblocking(int fd
);
85 int m_str_to_uint(const char* str
, unsigned int *val
);
87 /* Used to force mp_ints to be initialised */
88 #define DEF_MP_INT(X) mp_int X = {0, 0, 0, NULL}
90 /* Dropbear assertion */
91 #define dropbear_assert(X) do { if (!(X)) { fail_assert(#X, __FILE__, __LINE__); } } while (0)
93 /* Returns 0 if a and b have the same contents */
94 int constant_time_memcmp(const void* a
, const void *b
, size_t n
);
96 /* Returns a time in seconds that doesn't go backwards - does not correspond to
98 time_t monotonic_now();
100 char * expand_homedir_path(const char *inpath
);
102 #endif /* DROPBEAR_DBUTIL_H_ */