Add capability to load symbols from current executable

cryptoki/src/context/mod.rs

@@ -85,15 +85,32 @@ pub struct Pkcs11 {
     initialized: Arc<RwLock<bool>>,
 }
 
+#[derive(Debug)]
+/// Type of library to load in the instantiation of a new Pkcs11 context.
+pub enum LibLoadingType<P: AsRef<Path>> {
+    /// Load current executable, the PKCS11 implementation is contained in the current executable
+    OpenSelf,
+    /// Open dynamic library specify in input
+    Open(P),
+}
+
 impl Pkcs11 {
     /// Instantiate a new context from the path of a PKCS11 dynamic library implementation.
-    pub fn new<P>(filename: P) -> Result<Self>
+    pub fn new<P>(filename: LibLoadingType<P>) -> Result<Self>
     where
         P: AsRef<Path>,
     {
         unsafe {
-            let pkcs11_lib =
-                cryptoki_sys::Pkcs11::new(filename.as_ref()).map_err(Error::LibraryLoading)?;
+            let pkcs11_lib = match filename {
+                LibLoadingType::OpenSelf => {
+                    #[cfg(not(windows))]
+                    let this_lib = libloading::os::unix::Library::this();
+                    #[cfg(windows)]
+                    let this_lib = libloading::os::windows::Library::this();
+                    cryptoki_sys::Pkcs11::from_library(this_lib)?
+                }
+                LibLoadingType::Open(filename) => cryptoki_sys::Pkcs11::new(filename.as_ref()).map_err(Error::LibraryLoading)?
+            };
             let mut list = mem::MaybeUninit::uninit();
 
             Rv::from(pkcs11_lib.C_GetFunctionList(list.as_mut_ptr()))

cryptoki/src/context/session_management.rs

@@ -47,12 +47,12 @@ impl Pkcs11 {
     /// ```rust
     /// # fn main() -> testresult::TestResult {
     /// use cryptoki::session::Session;
-    /// use cryptoki::context::Pkcs11;
+    /// use cryptoki::context::{LibLoadingType, Pkcs11};
     ///
-    /// let mut client = Pkcs11::new(
+    /// let mut client = Pkcs11::new(LibLoadingType::Open(
     ///     std::env::var("PKCS11_SOFTHSM2_MODULE")
     ///        .unwrap_or_else(|_| "/usr/local/lib/softhsm/libsofthsm2.so".to_string()),
-    /// )?;
+    /// ))?;
     /// client.initialize(cryptoki::context::CInitializeArgs::OsThreads)?;
     ///
     /// // Use the first slot

cryptoki/src/session/object_management.rs

@@ -29,7 +29,7 @@ const MAX_OBJECT_COUNT: NonZeroUsize = unsafe { NonZeroUsize::new_unchecked(10)
 ///
 /// ```no_run
 /// use cryptoki::context::CInitializeArgs;
-/// use cryptoki::context::Pkcs11;
+/// use cryptoki::context::{Pkcs11, LibLoadingType};
 /// use cryptoki::error::Error;
 /// use cryptoki::object::Attribute;
 /// use cryptoki::object::AttributeType;
@@ -38,10 +38,10 @@ const MAX_OBJECT_COUNT: NonZeroUsize = unsafe { NonZeroUsize::new_unchecked(10)
 /// use std::env;
 ///
 /// # fn main() -> testresult::TestResult {
-/// # let pkcs11 = Pkcs11::new(
+/// # let pkcs11 = Pkcs11::new(LibLoadingType::Open(
 /// #    env::var("PKCS11_SOFTHSM2_MODULE")
 /// #        .unwrap_or_else(|_| "/usr/local/lib/libsofthsm2.so".to_string()),
-/// # )?;
+/// # ))?;
 /// #
 /// # pkcs11.initialize(CInitializeArgs::OsThreads)?;
 /// # let slot = pkcs11.get_slots_with_token()?.remove(0);
@@ -278,13 +278,13 @@ impl Session {
     /// ```rust
     /// # fn main() -> testresult::TestResult {
     /// # use cryptoki::session::Session;
-    /// # use cryptoki::context::Pkcs11;
+    /// # use cryptoki::context::{LibLoadingType, Pkcs11};
     /// # use cryptoki::object::{Attribute, AttributeType, CertificateType, ObjectClass, ObjectHandle};
     /// #
-    /// # let mut client = Pkcs11::new(
+    /// # let mut client = Pkcs11::new(LibLoadingType::Open(
     /// #    std::env::var("PKCS11_SOFTHSM2_MODULE")
     /// #       .unwrap_or_else(|_| "/usr/local/lib/softhsm/libsofthsm2.so".to_string()),
-    /// # )?;
+    /// # ))?;
     /// # client.initialize(cryptoki::context::CInitializeArgs::OsThreads)?;
     /// #
     /// # // Use the first slot
@@ -392,18 +392,18 @@ impl Session {
     /// types.  If you wish, you may create a hash table simply by:
     ///
     /// ```no_run
-    /// use cryptoki::context::Pkcs11;
+    /// use cryptoki::context::{LibLoadingType, Pkcs11};
     /// use cryptoki::context::CInitializeArgs;
     /// use cryptoki::object::AttributeType;
     /// use cryptoki::session::UserType;
     /// use cryptoki::types::AuthPin;
     /// use std::collections::HashMap;
     /// use std::env;
     ///
-    /// let mut pkcs11 = Pkcs11::new(
+    /// let mut pkcs11 = Pkcs11::new(LibLoadingType::Open(
     ///         env::var("PKCS11_SOFTHSM2_MODULE")
     ///             .unwrap_or_else(|_| "/usr/local/lib/softhsm/libsofthsm2.so".to_string()),
-    ///     )
+    ///     ))
     ///     .unwrap();
     ///
     /// pkcs11.initialize(CInitializeArgs::OsThreads).unwrap();

cryptoki/tests/common.rs

@@ -1,6 +1,6 @@
 // Copyright 2021 Contributors to the Parsec project.
 // SPDX-License-Identifier: Apache-2.0
-use cryptoki::context::{CInitializeArgs, Pkcs11};
+use cryptoki::context::{CInitializeArgs, LibLoadingType, Pkcs11};
 use cryptoki::session::UserType;
 use cryptoki::slot::Slot;
 use cryptoki::types::AuthPin;
@@ -12,10 +12,10 @@ pub static USER_PIN: &str = "fedcba";
 pub static SO_PIN: &str = "abcdef";
 
 pub fn get_pkcs11() -> Pkcs11 {
-    Pkcs11::new(
+    Pkcs11::new(LibLoadingType::Open(
         env::var("PKCS11_SOFTHSM2_MODULE")
             .unwrap_or_else(|_| "/usr/local/lib/softhsm/libsofthsm2.so".to_string()),
-    )
+    ))
     .unwrap()
 }