libssh 0.12.1 The SSH library

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misc.h
1/*
2 * This file is part of the SSH Library
3 *
4 * Copyright (c) 2009 by Aris Adamantiadis
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#ifndef MISC_H_
22#define MISC_H_
23
24#ifdef _WIN32
25
26# ifdef _MSC_VER
27# ifndef _SSIZE_T_DEFINED
28# undef ssize_t
29# include <BaseTsd.h>
30 typedef _W64 SSIZE_T ssize_t;
31# define _SSIZE_T_DEFINED
32# endif /* _SSIZE_T_DEFINED */
33# endif /* _MSC_VER */
34
35#else
36#include <sys/types.h>
37#include <stdbool.h>
38#endif /* _WIN32 */
39#include <stdio.h>
40
41#ifdef __cplusplus
42 extern "C" {
43#endif
44
45/* in misc.c */
46/* gets the user home dir. */
47 char *ssh_get_user_home_dir(ssh_session session);
48 char *ssh_get_local_username(void);
49 char *ssh_get_local_hostname(void);
50 int ssh_file_readaccess_ok(const char *file);
51 int ssh_dir_writeable(const char *path);
52
53 char *ssh_path_expand_tilde(const char *d);
54 char *ssh_path_expand_escape(ssh_session session, const char *s);
55 int ssh_analyze_banner(ssh_session session, int server);
56 int ssh_is_ipaddr_v4(const char *str);
57 int ssh_is_ipaddr(const char *str);
58
59/* list processing */
60
61 struct ssh_list {
62 struct ssh_iterator *root;
63 struct ssh_iterator *end;
64};
65
66 struct ssh_iterator {
67 struct ssh_iterator *next;
68 const void *data;
69};
70
71 struct ssh_jump_info_struct {
72 char *hostname;
73 char *username;
74 int port;
75};
76
77 struct ssh_timestamp {
78 long seconds;
79 long useconds;
80};
81
82 enum ssh_quote_state_e {
83 NO_QUOTE,
84 SINGLE_QUOTE,
85 DOUBLE_QUOTE
86};
87
88 struct ssh_list *ssh_list_new(void);
89 void ssh_list_free(struct ssh_list *list);
90 struct ssh_iterator *ssh_list_get_iterator(const struct ssh_list *list);
91 struct ssh_iterator *ssh_list_find(const struct ssh_list *list, void *value);
92 size_t ssh_list_count(const struct ssh_list *list);
93 int ssh_list_append(struct ssh_list *list, const void *data);
94 int ssh_list_prepend(struct ssh_list *list, const void *data);
95 void ssh_list_remove(struct ssh_list *list, struct ssh_iterator *iterator);
96 char *ssh_lowercase(const char* str);
97 char *ssh_hostport(const char *host, int port);
98
99 const void *_ssh_list_pop_head(struct ssh_list *list);
100
101#define ssh_iterator_value(type, iterator)\
102 ((type)((iterator)->data))
103
109#define ssh_list_pop_head(type, ssh_list)\
110 ((type)_ssh_list_pop_head(ssh_list))
111
112#define SSH_LIST_FREE(x) \
113 do { if ((x) != NULL) { ssh_list_free(x); (x) = NULL; } } while(0)
114
115 int ssh_make_milliseconds(unsigned long sec, unsigned long usec);
116 void ssh_timestamp_init(struct ssh_timestamp *ts);
117 int ssh_timeout_elapsed(struct ssh_timestamp *ts, int timeout);
118 int ssh_timeout_update(struct ssh_timestamp *ts, int timeout);
119
120 void uint64_inc(unsigned char *counter);
121
122 void ssh_log_hexdump(const char *descr, const unsigned char *what, size_t len);
123
124 int ssh_mkdirs(const char *pathname, mode_t mode);
125
126 int ssh_quote_file_name(const char *file_name, char *buf, size_t buf_len);
127 int ssh_newline_vis(const char *string, char *buf, size_t buf_len);
128 int ssh_tmpname(char *name);
129
130 char *ssh_strreplace(const char *src, const char *pattern, const char *repl);
131
132ssize_t ssh_readn(int fd, void *buf, size_t nbytes);
133ssize_t ssh_writen(int fd, const void *buf, size_t nbytes);
134
135 int ssh_check_hostname_syntax(const char *hostname);
136 int ssh_check_username_syntax(const char *username);
137
138 void ssh_proxyjumps_free(struct ssh_list *proxy_jump_list);
139 bool ssh_libssh_proxy_jumps(void);
140
141FILE *ssh_strict_fopen(const char *filename, size_t max_file_size);
142
143#ifdef __cplusplus
144}
145#endif
146
147#endif /* MISC_H_ */
ssh_libssh_proxy_jumps
bool ssh_libssh_proxy_jumps(void)
Check if libssh proxy jumps is enabled.
Definition misc.c:2426
ssh_writen
ssize_t ssh_writen(int fd, const void *buf, size_t nbytes)
Write the requested number of bytes to a local file.
Definition misc.c:2265
ssh_log_hexdump
void ssh_log_hexdump(const char *descr, const unsigned char *what, size_t len)
Log the content of a buffer in hexadecimal format, similar to the output of 'hexdump -C' command.
Definition misc.c:584
ssh_mkdirs
int ssh_mkdirs(const char *pathname, mode_t mode)
Attempts to create a directory with the given pathname. The missing directories in the given pathname...
Definition misc.c:1126
ssh_readn
ssize_t ssh_readn(int fd, void *buf, size_t nbytes)
Read the requested number of bytes from a local file.
Definition misc.c:2209
ssh_list_count
size_t ssh_list_count(const struct ssh_list *list)
Get the number of elements in the list.
Definition misc.c:827
ssh_proxyjumps_free
void ssh_proxyjumps_free(struct ssh_list *proxy_jump_list)
Free proxy jump list.
Definition misc.c:2401
ssh_check_hostname_syntax
int ssh_check_hostname_syntax(const char *hostname)
Checks syntax of a domain name.
Definition misc.c:2311
ssh_path_expand_tilde
char * ssh_path_expand_tilde(const char *d)
Expand a directory starting with a tilde '~'.
Definition misc.c:1189
ssh_check_username_syntax
int ssh_check_username_syntax(const char *username)
Checks syntax of a username.
Definition misc.c:2370
ssh_timeout_update
int ssh_timeout_update(struct ssh_timestamp *ts, int timeout)
updates a timeout value so it reflects the remaining time
Definition misc.c:1743
ssh_dir_writeable
int ssh_dir_writeable(const char *path)
Check if the given path is an existing directory and that is accessible for writing.
Definition misc.c:343
ssh_jump_info_struct
Definition misc.h:71