lib/libalpm/util.h


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

/*
 *  util.h
 *
 *  Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
 *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
 *  Copyright (c) 2005 by Aurelien Foret <orelien@chez.com>
 *  Copyright (c) 2005 by Christian Hamar <krics@linuxforum.hu>
 *  Copyright (c) 2006 by David Kimpe <dnaku@frugalware.org>
 *  Copyright (c) 2005, 2006 by Miklos Vajna <vmiklos@frugalware.org>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef _ALPM_UTIL_H
#define _ALPM_UTIL_H

#include "alpm_list.h"
#include "alpm.h"
#include "package.h" /* alpm_pkg_t */
#include "handle.h" /* alpm_handle_t */

#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <stddef.h> /* size_t */
#include <sys/types.h>
#include <sys/stat.h> /* struct stat */
#include <math.h> /* fabs */
#include <float.h> /* DBL_EPSILON */
#include <fcntl.h> /* open, close */

#include <archive.h> /* struct archive */

#ifdef ENABLE_NLS
#include <libintl.h> /* here so it doesn't need to be included elsewhere */
/* define _() as shortcut for gettext() */
#define _(str) dgettext ("libalpm", str)
#else
#define _(s) s
#endif

#define ALLOC_FAIL(s) do { fprintf(stderr, "alloc failure: could not allocate %zd bytes\n", s); } while(0)

#define MALLOC(p, s, action) do { p = malloc(s); if(p == NULL) { ALLOC_FAIL(s); action; } } while(0)
#define CALLOC(p, l, s, action) do { p = calloc(l, s); if(p == NULL) { ALLOC_FAIL(l * s); action; } } while(0)
/* This strdup macro is NULL safe- copying NULL will yield NULL */
#define STRDUP(r, s, action) do { if(s != NULL) { r = strdup(s); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0)
#define STRNDUP(r, s, l, action) do { if(s != NULL) { r = strndup(s, l); if(r == NULL) { ALLOC_FAIL(strlen(s)); action; } } else { r = NULL; } } while(0)

#define FREE(p) do { free(p); p = NULL; } while(0)

#define ASSERT(cond, action) do { if(!(cond)) { action; } } while(0)

#define RET_ERR_VOID(handle, err) do { \
  _alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \
  (handle)->pm_errno = (err); \
  return; } while(0)

#define RET_ERR(handle, err, ret) do { \
  _alpm_log(handle, ALPM_LOG_DEBUG, "returning error %d from %s : %s\n", err, __func__, alpm_strerror(err)); \
  (handle)->pm_errno = (err); \
  return (ret); } while(0)

#define DOUBLE_EQ(x, y) (fabs((x) - (y)) < DBL_EPSILON)

#define CHECK_HANDLE(handle, action) do { if(!(handle)) { action; } (handle)->pm_errno = 0; } while(0)

/** Standard buffer size used throughout the library. */
#ifdef BUFSIZ
#define ALPM_BUFFER_SIZE BUFSIZ
#else
#define ALPM_BUFFER_SIZE 8192
#endif

#ifndef O_BINARY
#define O_BINARY 0
#endif

#define OPEN(fd, path, flags) do { fd = open(path, flags | O_BINARY); } while(fd == -1 && errno == EINTR)
#define CLOSE(fd) do { int ret; do { ret = close(fd); } while(ret == -1 && errno == EINTR); } while(0)

/**
 * Used as a buffer/state holder for _alpm_archive_fgets().
 */
struct archive_read_buffer {
  char *line;
  char *line_offset;
  size_t line_size;
  size_t max_line_size;

  char *block;
  char *block_offset;
  size_t block_size;

  int ret;
};

enum _alpm_csum {
  ALPM_CSUM_MD5,
  ALPM_CSUM_SHA256,
};

int _alpm_makepath(const char *path);
int _alpm_makepath_mode(const char *path, mode_t mode);
int _alpm_copyfile(const char *src, const char *dest);
size_t _alpm_strip_newline(char *str);

int _alpm_open_archive(alpm_handle_t *handle, const char *path,
    struct stat *buf, struct archive **archive, alpm_errno_t error);
int _alpm_unpack_single(alpm_handle_t *handle, const char *archive,
    const char *prefix, const char *filename);
int _alpm_unpack(alpm_handle_t *handle, const char *archive, const char *prefix,
    alpm_list_t *list, int breakfirst);
int _alpm_rmrf(const char *path);
ssize_t _alpm_files_in_directory(alpm_handle_t *handle, const char *path, int full_count);
int _alpm_logaction(alpm_handle_t *handle, const char *fmt, va_list args);
int _alpm_run_chroot(alpm_handle_t *handle, const char *cmd, char *const argv[]);
int _alpm_ldconfig(alpm_handle_t *handle);
int _alpm_str_cmp(const void *s1, const void *s2);
char *_alpm_filecache_find(alpm_handle_t *handle, const char *filename);
const char *_alpm_filecache_setup(alpm_handle_t *handle);
int _alpm_lstat(const char *path, struct stat *buf);
int _alpm_test_checksum(const char *filepath, const char *expected, enum _alpm_csum type);
int _alpm_archive_fgets(struct archive *a, struct archive_read_buffer *b);
int _alpm_splitname(const char *target, char **name, char **version,
    unsigned long *name_hash);
unsigned long _alpm_hash_sdbm(const char *str);
off_t _alpm_strtoofft(const char *line);
alpm_time_t _alpm_parsedate(const char *line);
int _alpm_raw_cmp(const char *first, const char *second);
int _alpm_raw_ncmp(const char *first, const char *second, size_t max);
int _alpm_access(alpm_handle_t *handle, const char *dir, const char *file, int amode);
int _alpm_fnmatch(const void *pattern, const void *string);

#ifndef HAVE_STRSEP
char *strsep(char **, const char *);
#endif

#ifndef HAVE_STRNDUP
char *strndup(const char *s, size_t n);
#endif

/* check exported library symbols with: nm -C -D <lib> */
#define SYMEXPORT __attribute__((visibility("default")))
#define SYMHIDDEN __attribute__((visibility("internal")))

#define UNUSED __attribute__((unused))

#endif /* _ALPM_UTIL_H */

/* vim: set ts=2 sw=2 noet: */