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  1. 4
      Cargo.toml
  2. 2
      clamav-sys/.gitignore
  3. 22
      clamav-sys/Cargo.toml
  4. 339
      clamav-sys/LICENSE
  5. 64
      clamav-sys/README.md
  6. 226
      clamav-sys/build.rs
  7. 178
      clamav-sys/src/lib.rs
  8. 1
      clamav-sys/wrapper.h

4
Cargo.toml
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[workspace]
members = [
"libclamav_rust",
]
members = ["clamav-sys", "libclamav_rust"]
[profile.dev.package."*"]
opt-level = 2

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clamav-sys/.gitignore vendored
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/target
Cargo.lock

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clamav-sys/Cargo.toml
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[package]
authors = [
"Jonas Zaddach <jzaddach@cisco.com>",
"Scott Hutton <schutton@cisco.com>",
]
categories = ["external-ffi-bindings"]
description = "ClamAV low level bindings for Rust"
edition = "2021"
homepage = "https://github.com/Cisco-Talos/clamav-sys/"
license = "GPL-2.0"
name = "clamav-sys"
repository = "https://github.com/Cisco-Talos/clamav-sys/"
version = "1.0.0"
[build-dependencies]
bindgen = "0.64.0"
[target.'cfg(unix)'.build-dependencies]
pkg-config = "0.3"
[target.'cfg(windows)'.build-dependencies]
vcpkg = "0.2.10"

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clamav-sys/LICENSE
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
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clamav-sys/README.md
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# clamav-sys
clamav-sys is a minimal Rust interface around [libclamav](https://www.clamav.net).
This package is not supposed to be used stand-alone, but only through its safe wrapper,
clamav-rs.
## Building
### Unix (anything but Windows)
You should have the `clamav-dev` package of your distribution installed (ClamAV
with headers). The headers and library should be picked up automatically via
pkg-config.
### Windows
#### vcpkg
The preferred way of handling dependencies is `vcpkg`.
Point `$env:VCPKG_ROOT` to your `vcpkg` installation, and set
`$env:VCPKGRS_DYNAMIC=1` to use dynamic linking (the default method of linking will
likely not work, as `pdcurses` doesn't support the `x64-windows-static-md` triplet).
See the [vcpkg crate's documentation](https://docs.rs/vcpkg) for more details.
Gotchas:
- Windows has its own version of a zlib dll that is incompatbile with vcpkg. If
you get a message such as "The procedure entry point gzdirect could not be
located in the dynamic link library", you'll want to make sure that the vcpkg
dynamic libraries in your PATH variable are preceding the Windows one.
```
$env:PATH="$env:VCPKG_ROOT\installed\x64-windows\bin\;$env:PATH"
```
This error is especially hard to diagnose in PowerShell, as the process will
just hang without any output. In cmd.exe you'll get the aforementioned dialog
box telling you about the error.
#### Manual
If `vcpkg` is not available or cannot be found on your system, the build defaults
to a manual specification of dependencies.
You will need to define the following environment variables:
- `CLAMAV_SOURCE`: Points to the directory where the ClamAV source is located.
- `CLAMAV_BUILD`: Points to the ClamAV build directory.
- `OPENSSL_INCLUDE`: Points to the include directory containing `openssl/ssl.h`.
### MacOS
Install the development dependencies via `homebrew`:
```
brew install clamav openssl@1.1
```
OpenSSL is not included in the environment to avoid shadowing Apple's one, so
you need to tell the build script where it is located:
```
export OPENSSL_ROOT_DIR=/usr/local/Cellar/openssl@1.1/1.1.1i/
```
## Versioning
The version number of `libclamav-sys` tracks ClamAV's version number. That is,
you'll require at least ClamAV 1.0.0 to build `libclamav-sys` 1.0.0. As ClamAV
usually doesn't do breaking API changes, you'll be able to use `libclamav-sys`
with newer ClamAV versions.
No attempt at preserving downward compatibility (using a `libclamav-sys` with
a version number greater than ClamAV's) is made.

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// Copyright (C) 2020-2023 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
//
// Authors: Jonas Zaddach, Scott Hutton
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
use std::env;
use std::path::PathBuf;
// Generate bindings for these functions:
const BINDGEN_FUNCTIONS: &[&str] = &[
"cl_cleanup_crypto",
"cl_cvdfree",
"cl_cvdparse",
"cl_debug",
"cl_engine_addref",
"cl_engine_compile",
"cl_engine_free",
"cl_engine_get_num",
"cl_engine_get_str",
"cl_engine_new",
"cl_engine_set_clcb_engine_compile_progress",
"cl_engine_set_clcb_engine_free_progress",
"cl_engine_set_clcb_file_inspection",
"cl_engine_set_clcb_file_props",
"cl_engine_set_clcb_hash",
"cl_engine_set_clcb_meta",
"cl_engine_set_clcb_post_scan",
"cl_engine_set_clcb_pre_cache",
"cl_engine_set_clcb_pre_scan",
"cl_engine_set_clcb_sigload",
"cl_engine_set_clcb_sigload_progress",
"cl_engine_set_clcb_stats_add_sample",
"cl_engine_set_clcb_stats_decrement_count",
"cl_engine_set_clcb_stats_flush",
"cl_engine_set_clcb_stats_get_hostid",
"cl_engine_set_clcb_stats_get_num",
"cl_engine_set_clcb_stats_get_size",
"cl_engine_set_clcb_stats_remove_sample",
"cl_engine_set_clcb_stats_submit",
"cl_engine_set_clcb_virus_found",
"cl_engine_set_num",
"cl_engine_set_stats_set_cbdata",
"cl_engine_set_str",
"cl_engine_settings_apply",
"cl_engine_settings_copy",
"cl_engine_settings_free",
"cl_engine_stats_enable",
"cl_fmap_close",
"cl_fmap_open_handle",
"cl_fmap_open_memory",
"cl_init",
"cl_initialize_crypto",
"cl_load",
"cl_retdbdir",
"cl_retflevel",
"cl_retver",
"cl_scandesc",
"cl_scandesc_callback",
"cl_scanfile",
"cl_scanfile_callback",
"cl_scanmap_callback",
"cl_set_clcb_msg",
"cl_strerror",
"cli_append_virus",
"cli_ctx",
"cli_dbgmsg_no_inline",
"cli_errmsg",
"cli_get_debug_flag",
"cli_getdsig",
"cli_infomsg_simple",
"cli_versig2",
"cli_warnmsg",
"lsig_increment_subsig_match",
];
// Generate bindings for these types (structs, prototypes, etc.):
const BINDGEN_TYPES: &[&str] = &[
"cl_cvd",
"clcb_file_props",
"clcb_meta",
"clcb_post_scan",
"clcb_pre_scan",
"cli_ac_data",
"cli_ac_result",
"cli_matcher",
"time_t",
];
// Generate "newtype" enums for these C enums
const BINDGEN_ENUMS: &[&str] = &["cl_engine_field", "cl_error_t", "cl_msg"];
const BINDGEN_CONSTANTS: &[&str] = &[
"CL_DB_.*",
"CL_INIT_DEFAULT",
"CL_SCAN_.*",
"ENGINE_OPTIONS_.*",
"LAYER_ATTRIBUTES_.*",
];
const CLAMAV_LIBRARY_NAME: &str = "clamav";
fn generate_bindings(customize_bindings: &dyn Fn(bindgen::Builder) -> bindgen::Builder) {
let mut bindings = bindgen::Builder::default();
for function in BINDGEN_FUNCTIONS {
bindings = bindings.allowlist_function(function);
}
for typename in BINDGEN_TYPES {
bindings = bindings.allowlist_type(typename);
}
for typename in BINDGEN_ENUMS {
bindings = bindings.newtype_enum(typename);
}
for constant in BINDGEN_CONSTANTS {
bindings = bindings.allowlist_var(constant);
}
bindings = bindings
.header("wrapper.h")
// Tell cargo to invalidate the built crate whenever any of the
// included header files changed.
.parse_callbacks(Box::new(bindgen::CargoCallbacks));
bindings = customize_bindings(bindings);
// Write the bindings to the $OUT_DIR/bindings.rs file.
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
bindings
// Finish the builder and generate the bindings.
.generate()
// Unwrap the Result and panic on failure.
.expect("Unable to generate bindings")
.write_to_file(out_path.join("bindings.rs"))
.expect("Couldn't write bindings!");
}
fn cargo_common() {
println!("cargo:rustc-link-lib=dylib={}", CLAMAV_LIBRARY_NAME);
// Tell cargo to invalidate the built crate whenever the wrapper changes
println!("cargo:rerun-if-changed=wrapper.h");
}
#[cfg(windows)]
fn main() {
let include_paths = match vcpkg::find_package("clamav") {
Ok(pkg) => pkg.include_paths,
Err(err) => {
println!(
"cargo:warning=Either vcpkg is not installed, or an error occurred in vcpkg: {}",
err
);
let clamav_source = PathBuf::from(env::var("CLAMAV_SOURCE").expect("CLAMAV_SOURCE environment variable must be set and point to ClamAV's source directory"));
let clamav_build = PathBuf::from(env::var("CLAMAV_BUILD").expect("CLAMAV_BUILD environment variable must be set and point to ClamAV's build directory"));
let openssl_include = PathBuf::from(env::var("OPENSSL_INCLUDE").expect("OPENSSL_INCLUDE environment variable must be set and point to openssl's include directory"));
let profile = env::var("PROFILE").unwrap();
let library_path = match profile.as_str() {
"debug" => std::path::Path::new(&clamav_build).join("libclamav/Debug"),
"release" => std::path::Path::new(&clamav_build).join("libclamav/Release"),
_ => panic!("Unexpected build profile"),
};
println!(
"cargo:rustc-link-search=native={}",
library_path.to_str().unwrap()
);
vec![
clamav_source.join("libclamav"),
clamav_build,
openssl_include,
]
}
};
cargo_common();
generate_bindings(&|x: bindgen::Builder| -> bindgen::Builder {
let mut x = x;
for include_path in &include_paths {
x = x.clang_arg("-I").clang_arg(include_path.to_str().unwrap());
}
x
});
}
#[cfg(unix)]
fn main() {
let libclamav = pkg_config::Config::new()
.atleast_version("0.103")
.probe("libclamav")
.unwrap();
let mut include_paths = libclamav.include_paths;
if let Some(val) = std::env::var_os("OPENSSL_ROOT_DIR") {
let mut openssl_include_dir = PathBuf::from(val);
openssl_include_dir.push("include");
include_paths.push(openssl_include_dir);
}
cargo_common();
generate_bindings(&|x: bindgen::Builder| -> bindgen::Builder {
let mut x = x;
for include_path in &include_paths {
x = x.clang_arg("-I").clang_arg(include_path.to_str().unwrap());
}
x
});
}

178
clamav-sys/src/lib.rs
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// Copyright (C) 2020-2023 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
//
// Authors: Jonas Zaddach, Scott Hutton
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 2 as
// published by the Free Software Foundation.
//
// 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, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
#![warn(clippy::all, clippy::pedantic)]
#![allow(
non_camel_case_types,
non_upper_case_globals,
clippy::unreadable_literal
)]
use std::ffi::CStr;
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
impl Default for cl_scan_options {
fn default() -> Self {
cl_scan_options {
general: 0,
parse: CL_SCAN_PARSE_ARCHIVE
| CL_SCAN_PARSE_MAIL
| CL_SCAN_PARSE_OLE2
| CL_SCAN_PARSE_PDF
| CL_SCAN_PARSE_HTML
| CL_SCAN_PARSE_SWF
| CL_SCAN_PARSE_PE
| CL_SCAN_PARSE_ELF
| CL_SCAN_PARSE_SWF
| CL_SCAN_PARSE_XMLDOCS,
heuristic: 0,
mail: 0,
dev: 0,
}
}
}
impl PartialEq for cl_scan_options {
fn eq(&self, other: &Self) -> bool {
self.general == other.general
&& self.parse == other.parse
&& self.heuristic == other.heuristic
&& self.mail == other.mail
&& self.dev == other.dev
}
}
/// We need this for Windows, MSVC will use an `i32` as underlying enum type instead of `u32` like
/// gcc and clang.
impl From<i32> for cl_error_t {
fn from(val: i32) -> cl_error_t {
unsafe { cl_error_t(std::mem::transmute(val)) }
}
}
impl From<u32> for cl_error_t {
fn from(val: u32) -> cl_error_t {
cl_error_t(val)
}
}
impl From<cl_error_t> for i32 {
fn from(val: cl_error_t) -> i32 {
unsafe { std::mem::transmute(val.0) }
}
}
impl From<cl_error_t> for u32 {
fn from(val: cl_error_t) -> u32 {
val.0
}
}
impl std::fmt::Display for cl_error_t {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
unsafe {
let msg = CStr::from_ptr(cl_strerror(*self));
f.write_str(msg.to_str().unwrap_or("<unknown ClamAV error>"))
}
}
}
/// We need this for Windows, MSVC will use an `i32` as underlying enum type instead of `u32` like
/// gcc and clang.
impl From<i32> for cl_engine_field {
fn from(val: i32) -> cl_engine_field {
unsafe { cl_engine_field(std::mem::transmute(val)) }
}
}
impl From<u32> for cl_engine_field {
fn from(val: u32) -> cl_engine_field {
cl_engine_field(val)
}
}
impl From<cl_engine_field> for i32 {
fn from(val: cl_engine_field) -> i32 {
unsafe { std::mem::transmute(val.0) }
}
}
impl From<cl_engine_field> for u32 {
fn from(val: cl_engine_field) -> u32 {
val.0
}
}
impl std::fmt::Display for cl_engine_field {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
std::fmt::Display::fmt(&self.0, f)
}
}
/// We need this for Windows, MSVC will use an `i32` as underlying enum type instead of `u32` like
/// gcc and clang.
impl From<i32> for cl_msg {
fn from(val: i32) -> cl_msg {
unsafe { cl_msg(std::mem::transmute(val)) }
}
}
impl From<u32> for cl_msg {
fn from(val: u32) -> cl_msg {
cl_msg(val)
}
}
impl From<cl_msg> for i32 {
fn from(val: cl_msg) -> i32 {
unsafe { std::mem::transmute(val.0) }
}
}
impl From<cl_msg> for u32 {
fn from(val: cl_msg) -> u32 {
val.0
}
}
impl std::fmt::Display for cl_msg {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
std::fmt::Display::fmt(&self.0, f)
}
}
#[cfg(test)]
mod tests {
use super::cl_msg;
#[test]
fn msg_levels_exist() {
// Just a compilation check that the message levels are there. We don't
// check their values since those are defined in the C header file.
assert!(cl_msg::CL_MSG_WARN != cl_msg(0));
assert!(cl_msg::CL_MSG_ERROR != cl_msg(0));
assert!(cl_msg::CL_MSG_INFO_VERBOSE != cl_msg(0));
}
#[test]
fn test_cl_error_t_to_string() {
let err = super::cl_error_t::CL_EMEM;
assert_eq!(err.to_string(), "Can't allocate memory".to_string());
}
}

1
clamav-sys/wrapper.h
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#include <clamav.h>
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