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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284
// Copyright 2021 Contributors to the Parsec project.
// SPDX-License-Identifier: Apache-2.0
//! Object management functions
use crate::context::Function;
use crate::error::{Result, Rv, RvError};
use crate::object::{Attribute, AttributeInfo, AttributeType, ObjectHandle};
use crate::session::Session;
use cryptoki_sys::*;
use std::collections::HashMap;
use std::convert::TryInto;
// Search 10 elements at a time
const MAX_OBJECT_COUNT: usize = 10;
impl Session {
/// Search for session objects matching a template
pub fn find_objects(&self, template: &[Attribute]) -> Result<Vec<ObjectHandle>> {
let mut template: Vec<CK_ATTRIBUTE> = template.iter().map(|attr| attr.into()).collect();
unsafe {
Rv::from(get_pkcs11!(self.client(), C_FindObjectsInit)(
self.handle(),
template.as_mut_ptr(),
template.len().try_into()?,
))
.into_result(Function::FindObjectsInit)?;
}
let mut object_handles = [0; MAX_OBJECT_COUNT];
let mut object_count = 0;
let mut objects = Vec::new();
unsafe {
Rv::from(get_pkcs11!(self.client(), C_FindObjects)(
self.handle(),
object_handles.as_mut_ptr() as CK_OBJECT_HANDLE_PTR,
MAX_OBJECT_COUNT.try_into()?,
&mut object_count,
))
.into_result(Function::FindObjects)?;
}
while object_count > 0 {
objects.extend_from_slice(&object_handles[..object_count.try_into()?]);
unsafe {
Rv::from(get_pkcs11!(self.client(), C_FindObjects)(
self.handle(),
object_handles.as_mut_ptr() as CK_OBJECT_HANDLE_PTR,
MAX_OBJECT_COUNT.try_into()?,
&mut object_count,
))
.into_result(Function::FindObjects)?;
}
}
unsafe {
Rv::from(get_pkcs11!(self.client(), C_FindObjectsFinal)(
self.handle(),
))
.into_result(Function::FindObjectsFinal)?;
}
let objects = objects.into_iter().map(ObjectHandle::new).collect();
Ok(objects)
}
/// Create a new object
pub fn create_object(&self, template: &[Attribute]) -> Result<ObjectHandle> {
let mut template: Vec<CK_ATTRIBUTE> = template.iter().map(|attr| attr.into()).collect();
let mut object_handle = 0;
unsafe {
Rv::from(get_pkcs11!(self.client(), C_CreateObject)(
self.handle(),
template.as_mut_ptr(),
template.len().try_into()?,
&mut object_handle as CK_OBJECT_HANDLE_PTR,
))
.into_result(Function::CreateObject)?;
}
Ok(ObjectHandle::new(object_handle))
}
/// Destroy an object
pub fn destroy_object(&self, object: ObjectHandle) -> Result<()> {
unsafe {
Rv::from(get_pkcs11!(self.client(), C_DestroyObject)(
self.handle(),
object.handle(),
))
.into_result(Function::DestroyObject)
}
}
/// Get the attribute info of an object: if the attribute is present and its size.
///
/// # Arguments
///
/// * `object` - The [ObjectHandle] used to reference the object
/// * `attributes` - The list of attributes to get the information of
///
/// # Returns
///
/// This function will return a Vector of [AttributeInfo] enums that will either contain
/// the size of the requested attribute, [AttributeInfo::TypeInvalid] if the attribute is not a
/// valid type for the object, or [AttributeInfo::Sensitive] if the requested attribute is
/// sensitive and will not be returned to the user.
///
/// The list of returned attributes is 1-to-1 matched with the provided vector of attribute
/// types. If you wish, you may create a hash table simply by:
///
/// ```no_run
/// use cryptoki::context::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(
/// env::var("PKCS11_SOFTHSM2_MODULE")
/// .unwrap_or_else(|_| "/usr/local/lib/softhsm/libsofthsm2.so".to_string()),
/// )
/// .unwrap();
///
/// pkcs11.initialize(CInitializeArgs::OsThreads).unwrap();
/// let slot = pkcs11.get_slots_with_token().unwrap().remove(0);
///
/// let session = pkcs11.open_ro_session(slot).unwrap();
/// session.login(UserType::User, Some(&AuthPin::new("fedcba".into())));
///
/// let empty_attrib= vec![];
/// if let Some(object) = session.find_objects(&empty_attrib).unwrap().get(0) {
/// let attribute_types = vec![
/// AttributeType::Token,
/// AttributeType::Private,
/// AttributeType::Modulus,
/// AttributeType::KeyType,
/// AttributeType::Verify,];
///
/// let attribute_info = session.get_attribute_info(*object, &attribute_types).unwrap();
///
/// let hash = attribute_types
/// .iter()
/// .zip(attribute_info.iter())
/// .collect::<HashMap<_, _>>();
/// }
/// ```
///
/// Alternatively, you can call [Session::get_attribute_info_map], found below.
pub fn get_attribute_info(
&self,
object: ObjectHandle,
attributes: &[AttributeType],
) -> Result<Vec<AttributeInfo>> {
let mut results = Vec::new();
for attrib in attributes.iter() {
let mut template: Vec<CK_ATTRIBUTE> = vec![CK_ATTRIBUTE {
type_: (*attrib).into(),
pValue: std::ptr::null_mut(),
ulValueLen: 0,
}];
match unsafe {
Rv::from(get_pkcs11!(self.client(), C_GetAttributeValue)(
self.handle(),
object.handle(),
template.as_mut_ptr(),
template.len().try_into()?,
))
} {
Rv::Ok => {
results.push(AttributeInfo::Available(template[0].ulValueLen.try_into()?))
}
Rv::Error(RvError::AttributeSensitive) => results.push(AttributeInfo::Sensitive),
Rv::Error(RvError::AttributeTypeInvalid) => {
results.push(AttributeInfo::TypeInvalid)
}
rv => rv.into_result(Function::GetAttributeValue)?,
}
}
Ok(results)
}
/// Get the attribute info of an object: if the attribute is present and its size.
///
/// # Arguments
///
/// * `object` - The [ObjectHandle] used to reference the object
/// * `attributes` - The list of attributes to get the information of
///
/// # Returns
///
/// This function will return a HashMap of [AttributeType] and [AttributeInfo] enums that will
/// either contain the size of the requested attribute, [AttributeInfo::TypeInvalid] if the
/// attribute is not a valid type for the object, or [AttributeInfo::Sensitive] if the requested
/// attribute is sensitive and will not be returned to the user.
pub fn get_attribute_info_map(
&self,
object: ObjectHandle,
attributes: Vec<AttributeType>,
) -> Result<HashMap<AttributeType, AttributeInfo>> {
let attrib_info = self.get_attribute_info(object, attributes.as_slice())?;
Ok(attributes
.iter()
.cloned()
.zip(attrib_info.iter().cloned())
.collect::<HashMap<_, _>>())
}
/// Get the attributes values of an object.
/// Ignore the unavailable one. One has to call the get_attribute_info method to check which
/// ones are unavailable.
pub fn get_attributes(
&self,
object: ObjectHandle,
attributes: &[AttributeType],
) -> Result<Vec<Attribute>> {
let attrs_info = self.get_attribute_info(object, attributes)?;
// Allocating a chunk of memory where to put the attributes value.
let attrs_memory: Vec<(AttributeType, Vec<u8>)> = attrs_info
.iter()
.zip(attributes.iter())
.filter_map(|(attr_info, attr_type)| {
if let AttributeInfo::Available(size) = attr_info {
Some((*attr_type, vec![0; *size]))
} else {
None
}
})
.collect();
let mut template: Vec<CK_ATTRIBUTE> = attrs_memory
.iter()
.map(|(attr_type, memory)| {
Ok(CK_ATTRIBUTE {
type_: (*attr_type).into(),
pValue: memory.as_ptr() as *mut std::ffi::c_void,
ulValueLen: memory.len().try_into()?,
})
})
.collect::<Result<Vec<CK_ATTRIBUTE>>>()?;
// This should only return OK as all attributes asked should be
// available. Concurrency problem?
unsafe {
Rv::from(get_pkcs11!(self.client(), C_GetAttributeValue)(
self.handle(),
object.handle(),
template.as_mut_ptr(),
template.len().try_into()?,
))
.into_result(Function::GetAttributeValue)?;
}
// Convert from CK_ATTRIBUTE to Attribute
template.into_iter().map(|attr| attr.try_into()).collect()
}
/// Sets the attributes of an object
pub fn update_attributes(&self, object: ObjectHandle, template: &[Attribute]) -> Result<()> {
let mut template: Vec<CK_ATTRIBUTE> = template.iter().map(|attr| attr.into()).collect();
unsafe {
Rv::from(get_pkcs11!(self.client(), C_SetAttributeValue)(
self.handle(),
object.handle(),
template.as_mut_ptr(),
template.len().try_into()?,
))
.into_result(Function::SetAttributeValue)?;
}
Ok(())
}
}