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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
//! Bindings to OpenSSL
//!
//! This crate provides a safe interface to the popular OpenSSL cryptography library. OpenSSL versions 1.0.1 through
//! 1.1.1 and LibreSSL versions 2.5 through 3.4.0 are supported.
//!
//! # Building
//!
//! Both OpenSSL libraries and headers are required to build this crate. There are multiple options available to locate
//! OpenSSL.
//!
//! ## Vendored
//!
//! If the `vendored` Cargo feature is enabled, the `openssl-src` crate will be used to compile and statically link to
//! a copy of OpenSSL. The build process requires a C compiler, perl, and make. The OpenSSL version will generally track
//! the newest OpenSSL release, and changes to the version are *not* considered breaking changes.
//!
//! ```toml
//! [dependencies]
//! openssl = { version = "0.10", features = ["vendored"] }
//! ```
//!
//! The vendored copy will not be configured to automatically find the system's root certificates, but the
//! `openssl-probe` crate can be used to do that instead.
//!
//! ## Automatic
//!
//! The `openssl-sys` crate will automatically detect OpenSSL installations via Homebrew on macOS and vcpkg on Windows.
//! Additionally, it will use `pkg-config` on Unix-like systems to find the system installation.
//!
//! ```not_rust
//! # macOS (Homebrew)
//! $ brew install [email protected]
//!
//! # macOS (MacPorts)
//! $ sudo port install openssl
//!
//! # macOS (pkgsrc)
//! $ sudo pkgin install openssl
//!
//! # Arch Linux
//! $ sudo pacman -S pkg-config openssl
//!
//! # Debian and Ubuntu
//! $ sudo apt-get install pkg-config libssl-dev
//!
//! # Fedora
//! $ sudo dnf install pkg-config openssl-devel
//! ```
//!
//! ## Manual
//!
//! A set of environment variables can be used to point `openssl-sys` towards an OpenSSL installation. They will
//! override the automatic detection logic.
//!
//! * `OPENSSL_DIR` - If specified, the directory of an OpenSSL installation. The directory should contain `lib` and
//!     `include` subdirectories containing the libraries and headers respectively.
//! * `OPENSSL_LIB_DIR` and `OPENSSL_INCLUDE_DIR` - If specified, the directories containing the OpenSSL libraries and
//!     headers respectively. This can be used if the OpenSSL installation is split in a nonstandard directory layout.
//! * `OPENSSL_STATIC` - If set, the crate will statically link to OpenSSL rather than dynamically link.
//! * `OPENSSL_LIBS` - If set, a `:`-separated list of library names to link to (e.g. `ssl:crypto`). This can be used
//!     if nonstandard library names were used for whatever reason.
//! * `OPENSSL_NO_VENDOR` - If set, always find OpenSSL in the system, even if the `vendored` feature is enabled.
//!
//! Additionally, these variables can be prefixed with the upper-cased target architecture (e.g.
//!     `X86_64_UNKNOWN_LINUX_GNU_OPENSSL_DIR`), which can be useful when cross compiling.
//!
//! # Feature Detection
//!
//! APIs have been added to and removed from the various supported OpenSSL versions, and this library exposes the
//! functionality available in the version being linked against. This means that methods, constants, and even modules
//! will be present when building against one version of OpenSSL but not when building against another! APIs will
//! document any version-specific availability restrictions.
//!
//! A build script can be used to detect the OpenSSL or LibreSSL version at compile time if needed. The `openssl-sys`
//! crate propagates the version via the `DEP_OPENSSL_VERSION_NUMBER` and `DEP_OPENSSL_LIBRESSL_VERSION_NUMBER`
//! environment variables to build scripts. The version format is a hex-encoding of the OpenSSL release version:
//! `0xMNNFFPPS`. For example, version 1.0.2g's encoding is `0x1_00_02_07_0`.
//!
//! For example, let's say we want to adjust the TLSv1.3 cipher suites used by a client, but also want to compile
//! against OpenSSL versions that don't support TLSv1.3:
//!
//! Cargo.toml:
//!
//! ```toml
//! [dependencies]
//! openssl-sys = "0.9"
//! openssl = "0.10"
//! ```
//!
//! build.rs:
//!
//! ```
//! use std::env;
//!
//! fn main() {
//!     if let Ok(v) = env::var("DEP_OPENSSL_VERSION_NUMBER") {
//!         let version = u64::from_str_radix(&v, 16).unwrap();
//!
//!         if version >= 0x1_01_01_00_0 {
//!             println!("cargo:rustc-cfg=openssl111");
//!         }
//!     }
//! }
//! ```
//!
//! lib.rs:
//!
//! ```
//! use openssl::ssl::{SslConnector, SslMethod};
//!
//! let mut ctx = SslConnector::builder(SslMethod::tls()).unwrap();
//!
//! // set_ciphersuites was added in OpenSSL 1.1.1, so we can only call it when linking against that version
//! #[cfg(openssl111)]
//! ctx.set_ciphersuites("TLS_AES_256_GCM_SHA384:TLS_AES_128_GCM_SHA256").unwrap();
//! ```
#![doc(html_root_url = "https://docs.rs/openssl/0.10")]
#![warn(rust_2018_idioms)]

#[doc(inline)]
pub use ffi::init;

use libc::c_int;

use crate::error::ErrorStack;

#[macro_use]
mod macros;

mod bio;
#[macro_use]
mod util;
pub mod aes;
pub mod asn1;
pub mod base64;
pub mod bn;
#[cfg(all(not(libressl), not(osslconf = "OPENSSL_NO_CMS")))]
pub mod cms;
pub mod conf;
pub mod derive;
pub mod dh;
pub mod dsa;
pub mod ec;
pub mod ecdsa;
pub mod encrypt;
pub mod envelope;
pub mod error;
pub mod ex_data;
#[cfg(not(any(libressl, ossl300)))]
pub mod fips;
pub mod hash;
pub mod memcmp;
pub mod nid;
#[cfg(not(osslconf = "OPENSSL_NO_OCSP"))]
pub mod ocsp;
pub mod pkcs12;
pub mod pkcs5;
pub mod pkcs7;
pub mod pkey;
pub mod rand;
pub mod rsa;
pub mod sha;
pub mod sign;
pub mod srtp;
pub mod ssl;
pub mod stack;
pub mod string;
pub mod symm;
pub mod version;
pub mod x509;

fn cvt_p<T>(r: *mut T) -> Result<*mut T, ErrorStack> {
    if r.is_null() {
        Err(ErrorStack::get())
    } else {
        Ok(r)
    }
}

fn cvt(r: c_int) -> Result<c_int, ErrorStack> {
    if r <= 0 {
        Err(ErrorStack::get())
    } else {
        Ok(r)
    }
}

fn cvt_n(r: c_int) -> Result<c_int, ErrorStack> {
    if r < 0 {
        Err(ErrorStack::get())
    } else {
        Ok(r)
    }
}