1use foreign_types::ForeignTypeRef;
2use libc::{c_char, c_void};
3use std::convert::AsRef;
4use std::ffi::CStr;
5use std::fmt;
6use std::ops::Deref;
7use std::str;
8
9use crate::stack::Stackable;
10
11foreign_type_and_impl_send_sync! {
12    type CType = c_char;
13    fn drop = free;
14
15    pub struct OpensslString;
16    pub struct OpensslStringRef;
17}
18
19impl fmt::Display for OpensslString {
20    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
21        fmt::Display::fmt(&**self, f)
22    }
23}
24
25impl fmt::Debug for OpensslString {
26    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
27        fmt::Debug::fmt(&**self, f)
28    }
29}
30
31impl Stackable for OpensslString {
32    type StackType = ffi::stack_st_OPENSSL_STRING;
33}
34
35impl AsRef<str> for OpensslString {
36    fn as_ref(&self) -> &str {
37        self
38    }
39}
40
41impl AsRef<[u8]> for OpensslString {
42    fn as_ref(&self) -> &[u8] {
43        self.as_bytes()
44    }
45}
46
47impl Deref for OpensslStringRef {
48    type Target = str;
49
50    fn deref(&self) -> &str {
51        unsafe {
52            let slice = CStr::from_ptr(self.as_ptr()).to_bytes();
53            str::from_utf8_unchecked(slice)
54        }
55    }
56}
57
58impl AsRef<str> for OpensslStringRef {
59    fn as_ref(&self) -> &str {
60        self
61    }
62}
63
64impl AsRef<[u8]> for OpensslStringRef {
65    fn as_ref(&self) -> &[u8] {
66        self.as_bytes()
67    }
68}
69
70impl fmt::Display for OpensslStringRef {
71    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
72        fmt::Display::fmt(&**self, f)
73    }
74}
75
76impl fmt::Debug for OpensslStringRef {
77    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
78        fmt::Debug::fmt(&**self, f)
79    }
80}
81
82#[inline]
83#[cfg(not(boringssl))]
84unsafe fn free(buf: *mut c_char) {
85    ffi::OPENSSL_free(buf as *mut c_void);
86}
87
88#[inline]
89#[cfg(boringssl)]
90unsafe fn free(buf: *mut c_char) {
91    ffi::CRYPTO_free(
92        buf as *mut c_void,
93        concat!(file!(), "\0").as_ptr() as *const c_char,
94        line!() as ::libc::c_int,
95    );
96}
97