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
|
/* callbacks.cpp - callback targets for internal use:
Copyright (C) 2003,2004 Klarälvdalens Datakonsult AB
This file is part of GPGME++.
GPGME++ 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.
GPGME++ 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 GPGME; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "callbacks.h"
#include <gpgmepp/interfaces/progressprovider.h>
#include <gpgmepp/interfaces/passphraseprovider.h>
#include <gpgmepp/interfaces/dataprovider.h>
#include <gpgmepp/context.h> // for Error
#include <cassert>
#include <cerrno>
#include <unistd.h>
#include <cstdlib>
#include <string.h>
#include <cstdlib>
static inline gpg_error_t makeErrorFromErrno() {
return gpg_err_make_from_errno( (gpg_err_source_t)22, errno );
}
static inline gpg_error_t makeError( gpg_err_code_t code ) {
return gpg_err_make( (gpg_err_source_t)22, code );
}
using GpgME::ProgressProvider;
using GpgME::PassphraseProvider;
using GpgME::DataProvider;
void progress_callback( void * opaque, const char * what,
int type, int current, int total ) {
ProgressProvider * provider = static_cast<ProgressProvider*>( opaque );
if ( provider )
provider->showProgress( what, type, current, total );
}
static void wipe( char * buf, size_t len ) {
for ( size_t i = 0 ; i < len ; ++i )
buf[i] = '\0';
}
gpgme_error_t passphrase_callback( void * opaque, const char * uid_hint, const char * desc,
int prev_was_bad, int fd ) {
PassphraseProvider * provider = static_cast<PassphraseProvider*>( opaque );
bool canceled = false;
gpgme_error_t err = GPG_ERR_NO_ERROR;
char * passphrase = provider ? provider->getPassphrase( uid_hint, desc, prev_was_bad, canceled ) : 0 ;
if ( canceled )
err = makeError( GPG_ERR_CANCELED );
else
if ( passphrase && *passphrase ) {
size_t passphrase_length = strlen( passphrase );
size_t written = 0;
do {
ssize_t now_written = write( fd, passphrase + written, passphrase_length - written );
if ( now_written < 0 ) {
err = makeErrorFromErrno();
break;
}
written += now_written;
} while ( written < passphrase_length );
}
if ( passphrase && *passphrase )
wipe( passphrase, strlen( passphrase ) );
free( passphrase );
write( fd, "\n", 1 );
return err;
}
static ssize_t
data_read_callback( void * opaque, void * buf, size_t buflen ) {
DataProvider * provider = static_cast<DataProvider*>( opaque );
if ( !provider ) {
errno = EINVAL;
return -1;
}
return provider->read( buf, buflen );
}
static ssize_t
data_write_callback( void * opaque, const void * buf, size_t buflen ) {
DataProvider * provider = static_cast<DataProvider*>( opaque );
if ( !provider ) {
errno = EINVAL;
return -1;
}
return provider->write( buf, buflen );
}
static off_t
data_seek_callback( void * opaque, off_t offset, int whence ) {
DataProvider * provider = static_cast<DataProvider*>( opaque );
if ( !provider ) {
errno = EINVAL;
return -1;
}
if ( whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END ) {
errno = EINVAL;
return -1;
}
return provider->seek( offset, whence );
}
static void data_release_callback( void * opaque ) {
DataProvider * provider = static_cast<DataProvider*>( opaque );
if ( provider )
provider->release();
}
gpgme_data_cbs data_provider_callbacks = {
&data_read_callback,
&data_write_callback,
&data_seek_callback,
&data_release_callback
};
|
