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Class: OpenSSL::Engine

Relationships & Source Files
Namespace Children
Exceptions:
EngineError
Inherits: Object
Defined in: ext/openssl/ossl_engine.c,
ext/openssl/ossl_engine.c

Overview

This class is the access to openssl’s ENGINE cryptographic module implementation.

See also, www.openssl.org/docs/crypto/engine.html

Class Method Summary

Instance Method Summary

Class Method Details

.by_id(name) ⇒ Engine

Fetches the engine as specified by the id String.

OpenSSL::Engine.by_id("openssl")
 #=> #<OpenSSL::Engine id="openssl" name="Software engine support">

See .engines for the currently loaded engines.

[ GitHub ] 

  


# File 'ext/openssl/ossl_engine.c', line 156



static VALUE
ossl_engine_s_by_id(VALUE klass, VALUE id)
{
    ENGINE *e;
    VALUE obj;

    StringValueCStr(id);
    ossl_engine_s_load(1, &id, klass);
    obj = NewEngine(klass);
    if(!(e = ENGINE_by_id(RSTRING_PTR(id))))
	ossl_raise(eEngineError, NULL);
    SetEngine(obj, e);
    if(rb_block_given_p()) rb_yield(obj);
    if(!ENGINE_init(e))
	ossl_raise(eEngineError, NULL);
    ENGINE_ctrl(e, ENGINE_CTRL_SET_PASSWORD_CALLBACK,
		0, NULL, (void(*)(void))ossl_pem_passwd_cb);
    ossl_clear_error();

    return obj;
}


  








  

    .cleanup    



  

    

It is only necessary to run cleanup when engines are loaded via .load. However, running cleanup before exit is recommended.



Note that this is needed and works only in ::OpenSSL < 1.1.0.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 113



static VALUE
ossl_engine_s_cleanup(VALUE self)
{
    return Qnil;
}


  








  

    .engines  ⇒ Engine, ...   



  

    

Returns an array of currently loaded engines.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 125



static VALUE
ossl_engine_s_engines(VALUE klass)
{
    ENGINE *e;
    VALUE ary, obj;

    ary = rb_ary_new();
    for(e = ENGINE_get_first(); e; e = ENGINE_get_next(e)){
	obj = NewEngine(klass);
	/* Need a ref count of two here because of ENGINE_free being
	 * called internally by OpenSSL when moving to the next ENGINE
	 * and by us when releasing the ENGINE reference */
	ENGINE_up_ref(e);
	SetEngine(obj, e);
        rb_ary_push(ary, obj);
    }

    return ary;
}


  








  

    .load(*args)  
  

  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 84



static VALUE
ossl_engine_s_load(int argc, VALUE *argv, VALUE klass)
{
    VALUE name;

    rb_scan_args(argc, argv, "01", &name);
    if(NIL_P(name)){
        ENGINE_load_builtin_engines();
        return Qtrue;
    }
    StringValueCStr(name);
    OSSL_ENGINE_LOAD_IF_MATCH(dynamic, DYNAMIC);
    OSSL_ENGINE_LOAD_IF_MATCH(padlock, PADLOCK);
    OSSL_ENGINE_LOAD_IF_MATCH(capi, CAPI);
    OSSL_ENGINE_LOAD_IF_MATCH(cryptodev, CRYPTODEV);
    OSSL_ENGINE_LOAD_IF_MATCH(openssl, OPENSSL);
    rb_warning("no such builtin loader for `%"PRIsVALUE"'", name);
    return Qnil;
}


  







Instance Method Details



  

    #cipher(name)  ⇒ OpenSSL::Cipher   



  

    

Returns a new instance of Cipher by name, if it is available in this engine.



An EngineError will be raised if the cipher is unavailable.



e = OpenSSL::Engine.by_id("openssl")
 #=> #<OpenSSL::Engine id="openssl" name="Software engine support">
e.cipher("RC4")
 #=> #<OpenSSL::Cipher:0x007fc5cacc3048>


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 251



static VALUE
ossl_engine_get_cipher(VALUE self, VALUE name)
{
    ENGINE *e;
    const EVP_CIPHER *ciph, *tmp;
    int nid;

    tmp = EVP_get_cipherbyname(StringValueCStr(name));
    if(!tmp) ossl_raise(eEngineError, "no such cipher `%"PRIsVALUE"'", name);
    nid = EVP_CIPHER_nid(tmp);
    GetEngine(self, e);
    ciph = ENGINE_get_cipher(e, nid);
    if(!ciph) ossl_raise(eEngineError, NULL);

    return ossl_cipher_new(ciph);
}


  








  

    #cmds  ⇒ Array, ...   



  

    

Returns an array of command definitions for the current engine


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 426



static VALUE
ossl_engine_get_cmds(VALUE self)
{
    ENGINE *e;
    const ENGINE_CMD_DEFN *defn, *p;
    VALUE ary, tmp;

    GetEngine(self, e);
    ary = rb_ary_new();
    if ((defn = ENGINE_get_cmd_defns(e)) != NULL){
	for (p = defn; p->cmd_num > 0; p++){
	    tmp = rb_ary_new();
	    rb_ary_push(tmp, rb_str_new2(p->cmd_name));
	    rb_ary_push(tmp, rb_str_new2(p->cmd_desc));
	    rb_ary_push(tmp, ossl_engine_cmd_flag_to_name(p->cmd_flags));
	    rb_ary_push(ary, tmp);
	}
    }

    return ary;
}


  








  

    #ctrl_cmd(command, value = nil)  ⇒ Engine   



  

    

Sends the given command to this engine.



Raises an Engine::EngineError if the command fails.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 392



static VALUE
ossl_engine_ctrl_cmd(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    VALUE cmd, val;
    int ret;

    GetEngine(self, e);
    rb_scan_args(argc, argv, "11", &cmd, &val);
    ret = ENGINE_ctrl_cmd_string(e, StringValueCStr(cmd),
				 NIL_P(val) ? NULL : StringValueCStr(val), 0);
    if (!ret) ossl_raise(eEngineError, NULL);

    return self;
}


  








  

    #digest(name)  ⇒ OpenSSL::Digest   



  

    

Returns a new instance of Digest by name.



Will raise an Engine::EngineError if the digest is unavailable.



e = OpenSSL::Engine.by_id("openssl")
  #=> #<OpenSSL::Engine id="openssl" name="Software engine support">
e.digest("SHA1")
  #=> #<OpenSSL::Digest: da39a3ee5e6b4b0d3255bfef95601890afd80709>
e.digest("zomg")
  #=> OpenSSL::Engine::EngineError: no such digest `zomg'


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 283



static VALUE
ossl_engine_get_digest(VALUE self, VALUE name)
{
    ENGINE *e;
    const EVP_MD *md, *tmp;
    int nid;

    tmp = EVP_get_digestbyname(StringValueCStr(name));
    if(!tmp) ossl_raise(eEngineError, "no such digest `%"PRIsVALUE"'", name);
    nid = EVP_MD_nid(tmp);
    GetEngine(self, e);
    md = ENGINE_get_digest(e, nid);
    if(!md) ossl_raise(eEngineError, NULL);

    return ossl_digest_new(md);
}


  








  

    #finish  ⇒ nil   



  

    

Releases all internal structural references for this engine.



May raise an Engine::EngineError if the engine is unavailable


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 225



static VALUE
ossl_engine_finish(VALUE self)
{
    ENGINE *e;

    GetEngine(self, e);
    if(!ENGINE_finish(e)) ossl_raise(eEngineError, NULL);

    return Qnil;
}


  








  

    #id  ⇒ String   



  

    

Gets the id for this engine.



OpenSSL::Engine.load
OpenSSL::Engine.engines #=> [#<OpenSSL::Engine#>, ...]
OpenSSL::Engine.engines.first.id
  #=> "rsax"


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 189



static VALUE
ossl_engine_get_id(VALUE self)
{
    ENGINE *e;
    GetEngine(self, e);
    return rb_str_new2(ENGINE_get_id(e));
}


  








  

    #inspect  ⇒ String   



  

    

Pretty prints this engine.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 454



static VALUE
ossl_engine_inspect(VALUE self)
{
    ENGINE *e;

    GetEngine(self, e);
    return rb_sprintf("#<%"PRIsVALUE" id=\"%s\" name=\"%s\">",
		      rb_obj_class(self), ENGINE_get_id(e), ENGINE_get_name(e));
}


  








  

    #load_private_key(id = nil, data = nil)  ⇒ OpenSSL::PKey   



  

    

Loads the given private key identified by id and data.



An EngineError is raised of the PKey is unavailable.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 309



static VALUE
ossl_engine_load_privkey(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    EVP_PKEY *pkey;
    VALUE id, data, obj;
    char *sid, *sdata;

    rb_scan_args(argc, argv, "02", &id, &data);
    sid = NIL_P(id) ? NULL : StringValueCStr(id);
    sdata = NIL_P(data) ? NULL : StringValueCStr(data);
    GetEngine(self, e);
    pkey = ENGINE_load_private_key(e, sid, NULL, sdata);
    if (!pkey) ossl_raise(eEngineError, NULL);
    obj = ossl_pkey_new(pkey);
    OSSL_PKEY_SET_PRIVATE(obj);

    return obj;
}


  








  

    #load_public_key(id = nil, data = nil)  ⇒ OpenSSL::PKey   



  

    

Loads the given public key identified by id and data.



An EngineError is raised of the PKey is unavailable.


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 338



static VALUE
ossl_engine_load_pubkey(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    EVP_PKEY *pkey;
    VALUE id, data;
    char *sid, *sdata;

    rb_scan_args(argc, argv, "02", &id, &data);
    sid = NIL_P(id) ? NULL : StringValueCStr(id);
    sdata = NIL_P(data) ? NULL : StringValueCStr(data);
    GetEngine(self, e);
    pkey = ENGINE_load_public_key(e, sid, NULL, sdata);
    if (!pkey) ossl_raise(eEngineError, NULL);

    return ossl_pkey_new(pkey);
}


  








  

    #name  ⇒ String   



  

    

Get the descriptive name for this engine.



OpenSSL::Engine.load
OpenSSL::Engine.engines #=> [#<OpenSSL::Engine#>, ...]
OpenSSL::Engine.engines.first.name
  #=> "RSAX engine support"


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 209



static VALUE
ossl_engine_get_name(VALUE self)
{
    ENGINE *e;
    GetEngine(self, e);
    return rb_str_new2(ENGINE_get_name(e));
}


  








  

    #set_default(flag)    



  

    

Set the defaults for this engine with the given flag.



These flags are used to control combinations of algorithm methods.



flag can be one of the following, other flags are available depending on your OS.


All flags




0xFFFF


No flags




0x0000





See also <openssl/engine.h>


  



  [ GitHub ]


  

  


# File 'ext/openssl/ossl_engine.c', line 372



static VALUE
ossl_engine_set_default(VALUE self, VALUE flag)
{
    ENGINE *e;
    int f = NUM2INT(flag);

    GetEngine(self, e);
    ENGINE_set_default(e, f);

    return Qtrue;
}