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
|
/*
* melib - gpgme module
*
* Copyright 2020 Manos Pitsidianakis
*
* This file is part of meli.
*
* meli 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 3 of the License, or
* (at your option) any later version.
*
* meli 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 meli. If not, see <http://www.gnu.org/licenses/>.
*/
use super::*;
use std::io::{self, Read, Seek, Write};
#[repr(C)]
struct TagData {
idx: usize,
fd: ::std::os::raw::c_int,
io_state: Arc<Mutex<IoState>>,
}
pub unsafe extern "C" fn gpgme_register_io_cb(
data: *mut ::std::os::raw::c_void,
fd: ::std::os::raw::c_int,
dir: ::std::os::raw::c_int,
fnc: gpgme_io_cb_t,
fnc_data: *mut ::std::os::raw::c_void,
tag: *mut *mut ::std::os::raw::c_void,
) -> gpgme_error_t {
let io_state: Arc<Mutex<IoState>> = Arc::from_raw(data as *const _);
let io_state_copy = io_state.clone();
let mut io_state_lck = io_state.lock().unwrap();
let idx = io_state_lck.max_idx;
io_state_lck.max_idx += 1;
let (sender, receiver) = smol::channel::unbounded();
let gpgfd = GpgmeFd {
fd,
fnc,
fnc_data,
idx,
write: dir == 0,
sender,
receiver,
io_state: io_state_copy.clone(),
};
let tag_data = Arc::into_raw(Arc::new(TagData {
idx,
fd,
io_state: io_state_copy,
}));
core::ptr::write(tag, tag_data as *mut _);
io_state_lck.ops.insert(idx, gpgfd);
drop(io_state_lck);
let _ = Arc::into_raw(io_state);
0
}
pub unsafe extern "C" fn gpgme_remove_io_cb(tag: *mut ::std::os::raw::c_void) {
let tag_data: Arc<TagData> = Arc::from_raw(tag as *const _);
let mut io_state_lck = tag_data.io_state.lock().unwrap();
let fd = io_state_lck.ops.remove(&tag_data.idx).unwrap();
fd.sender.try_send(()).unwrap();
drop(io_state_lck);
let _ = Arc::into_raw(tag_data);
}
pub unsafe extern "C" fn gpgme_event_io_cb(
data: *mut ::std::os::raw::c_void,
type_: gpgme_event_io_t,
type_data: *mut ::std::os::raw::c_void,
) {
if type_ == gpgme_event_io_t_GPGME_EVENT_DONE {
let err = type_data as gpgme_io_event_done_data_t;
let io_state: Arc<Mutex<IoState>> = Arc::from_raw(data as *const _);
let mut io_state_lck = io_state.lock().unwrap();
io_state_lck.sender.try_send(()).unwrap();
*io_state_lck.done.lock().unwrap() = Some(gpgme_error_try(&io_state_lck.lib, (*err).err));
drop(io_state_lck);
let _ = Arc::into_raw(io_state);
} else if type_ == gpgme_event_io_t_GPGME_EVENT_NEXT_KEY {
if let Some(inner) = core::ptr::NonNull::new(type_data as gpgme_key_t) {
let io_state: Arc<Mutex<IoState>> = Arc::from_raw(data as *const _);
let io_state_lck = io_state.lock().unwrap();
io_state_lck
.key_sender
.try_send(KeyInner { inner })
.unwrap();
drop(io_state_lck);
let _ = Arc::into_raw(io_state);
}
}
}
impl Read for Data {
#[inline]
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let result = unsafe {
let (buf, len) = (buf.as_mut_ptr() as *mut _, buf.len());
call!(self.lib, gpgme_data_read)(self.inner.as_ptr(), buf, len)
};
if result >= 0 {
Ok(result as usize)
} else {
Err(io::Error::last_os_error().into())
}
}
}
impl Write for Data {
#[inline]
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let result = unsafe {
let (buf, len) = (buf.as_ptr() as *const _, buf.len());
call!(self.lib, gpgme_data_write)(self.inner.as_ptr(), buf, len)
};
if result >= 0 {
Ok(result as usize)
} else {
Err(io::Error::last_os_error().into())
}
}
#[inline]
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
impl Seek for Data {
#[inline]
fn seek(&mut self, pos: io::SeekFrom) -> io::Result<u64> {
use std::convert::TryInto;
let (off, whence) = match pos {
io::SeekFrom::Start(off) => (off.try_into().unwrap_or(i64::MAX), libc::SEEK_SET),
io::SeekFrom::End(off) => (off.saturating_abs(), libc::SEEK_END),
io::SeekFrom::Current(off) => (off, libc::SEEK_CUR),
};
let result = unsafe { call!(self.lib, gpgme_data_seek)(self.inner.as_ptr(), off, whence) };
if result >= 0 {
Ok(result as u64)
} else {
Err(io::Error::last_os_error().into())
}
}
}
|
