summaryrefslogtreecommitdiff
path: root/ext/openssl/ossl_ssl_session.c
blob: 2fd853f9ff8651d4a459dabe64569cf078521c36 (plain)
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
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
/*
 *  Copyright (C) 2004-2007 Technorama Ltd. <oss-ruby@technorama.net>
 */

#include "ossl.h"

VALUE cSSLSession;
static VALUE eSSLSession;

static void
ossl_ssl_session_free(void *ptr)
{
    SSL_SESSION_free(ptr);
}

const rb_data_type_t ossl_ssl_session_type = {
    "OpenSSL/SSL/Session",
    {
	0, ossl_ssl_session_free,
    },
    0, 0, RUBY_TYPED_FREE_IMMEDIATELY,
};

static VALUE ossl_ssl_session_alloc(VALUE klass)
{
	return TypedData_Wrap_Struct(klass, &ossl_ssl_session_type, NULL);
}

/*
 * call-seq:
 *    Session.new(SSLSocket | string) => session
 *
 * === Parameters
 * +SSLSocket+ is an OpenSSL::SSL::SSLSocket
 * +string+ must be a DER or PEM encoded Session.
*/
static VALUE ossl_ssl_session_initialize(VALUE self, VALUE arg1)
{
	SSL_SESSION *ctx = NULL;

	if (RDATA(self)->data)
		ossl_raise(eSSLSession, "SSL Session already initialized");

	if (rb_obj_is_instance_of(arg1, cSSLSocket)) {
		SSL *ssl;

		GetSSL(arg1, ssl);

		if (!ssl || (ctx = SSL_get1_session(ssl)) == NULL)
			ossl_raise(eSSLSession, "no session available");
	} else {
		BIO *in = ossl_obj2bio(arg1);

		ctx = PEM_read_bio_SSL_SESSION(in, NULL, NULL, NULL);

		if (!ctx) {
		        OSSL_BIO_reset(in);
			ctx = d2i_SSL_SESSION_bio(in, NULL);
		}

		BIO_free(in);

		if (!ctx)
			ossl_raise(rb_eArgError, "unknown type");
	}

	/* should not happen */
	if (ctx == NULL)
		ossl_raise(eSSLSession, "ctx not set - internal error");

	RDATA(self)->data = ctx;

	return self;
}

#if HAVE_SSL_SESSION_CMP == 0
int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
{
    if (a->ssl_version != b->ssl_version ||
	a->session_id_length != b->session_id_length)
	return 1;
    return CRYPTO_memcmp(a->session_id, b->session_id, a->session_id_length);
}
#endif

/*
 * call-seq:
 *    session1 == session2 -> boolean
 *
*/
static VALUE ossl_ssl_session_eq(VALUE val1, VALUE val2)
{
	SSL_SESSION *ctx1, *ctx2;

	GetSSLSession(val1, ctx1);
	SafeGetSSLSession(val2, ctx2);

	switch (SSL_SESSION_cmp(ctx1, ctx2)) {
	case 0:		return Qtrue;
	default:	return Qfalse;
	}
}

/*
 * call-seq:
 *    session.time -> Time
 *
 * Gets start time of the session.
 *
*/
static VALUE ossl_ssl_session_get_time(VALUE self)
{
	SSL_SESSION *ctx;
	time_t t;

	GetSSLSession(self, ctx);

	t = SSL_SESSION_get_time(ctx);

	if (t == 0)
		return Qnil;

	return rb_funcall(rb_cTime, rb_intern("at"), 1, TIMET2NUM(t));
}

/*
 * call-seq:
 *    session.timeout -> integer
 *
 * Gets how long until the session expires in seconds.
 *
*/
static VALUE ossl_ssl_session_get_timeout(VALUE self)
{
	SSL_SESSION *ctx;
	time_t t;

	GetSSLSession(self, ctx);

	t = SSL_SESSION_get_timeout(ctx);

	return TIMET2NUM(t);
}

/*
 * call-seq:
 *    session.time=(Time) -> Time
 *    session.time=(integer) -> Time
 *
 * Sets start time of the session. Time resolution is in seconds.
 *
*/
static VALUE ossl_ssl_session_set_time(VALUE self, VALUE time_v)
{
	SSL_SESSION *ctx;
	long t;

	GetSSLSession(self, ctx);
	if (rb_obj_is_instance_of(time_v, rb_cTime)) {
		time_v = rb_funcall(time_v, rb_intern("to_i"), 0);
	}
	t = NUM2LONG(time_v);
	SSL_SESSION_set_time(ctx, t);
	return ossl_ssl_session_get_time(self);
}

/*
 * call-seq:
 *    session.timeout=(integer) -> integer
 *
 * Sets how long until the session expires in seconds.
 *
*/
static VALUE ossl_ssl_session_set_timeout(VALUE self, VALUE time_v)
{
	SSL_SESSION *ctx;
	long t;

	GetSSLSession(self, ctx);
	t = NUM2LONG(time_v);
	SSL_SESSION_set_timeout(ctx, t);
	return ossl_ssl_session_get_timeout(self);
}

#ifdef HAVE_SSL_SESSION_GET_ID
/*
 * call-seq:
 *    session.id -> aString
 *
 * Returns the Session ID.
*/
static VALUE ossl_ssl_session_get_id(VALUE self)
{
	SSL_SESSION *ctx;
	const unsigned char *p = NULL;
	unsigned int i = 0;

	GetSSLSession(self, ctx);

	p = SSL_SESSION_get_id(ctx, &i);

	return rb_str_new((const char *) p, i);
}
#endif

/*
 * call-seq:
 *    session.to_der -> aString
 *
 * Returns an ASN1 encoded String that contains the Session object.
*/
static VALUE ossl_ssl_session_to_der(VALUE self)
{
	SSL_SESSION *ctx;
	unsigned char *p;
	int len;
	VALUE str;

	GetSSLSession(self, ctx);
	len = i2d_SSL_SESSION(ctx, NULL);
	if (len <= 0) {
		ossl_raise(eSSLSession, "i2d_SSL_SESSION");
	}

	str = rb_str_new(0, len);
	p = (unsigned char *)RSTRING_PTR(str);
	i2d_SSL_SESSION(ctx, &p);
	ossl_str_adjust(str, p);
	return str;
}

/*
 * call-seq:
 *    session.to_pem -> String
 *
 * Returns a PEM encoded String that contains the Session object.
*/
static VALUE ossl_ssl_session_to_pem(VALUE self)
{
	SSL_SESSION *ctx;
	BIO *out;
	BUF_MEM *buf;
	VALUE str;
	int i;

	GetSSLSession(self, ctx);

	if (!(out = BIO_new(BIO_s_mem()))) {
		ossl_raise(eSSLSession, "BIO_s_mem()");
	}

	if (!(i=PEM_write_bio_SSL_SESSION(out, ctx))) {
		BIO_free(out);
		ossl_raise(eSSLSession, "SSL_SESSION_print()");
	}

	BIO_get_mem_ptr(out, &buf);
	str = rb_str_new(buf->data, buf->length);
	BIO_free(out);

	return str;
}


/*
 * call-seq:
 *    session.to_text -> String
 *
 * Shows everything in the Session object.
*/
static VALUE ossl_ssl_session_to_text(VALUE self)
{
	SSL_SESSION *ctx;
	BIO *out;
	BUF_MEM *buf;
	VALUE str;

	GetSSLSession(self, ctx);

	if (!(out = BIO_new(BIO_s_mem()))) {
		ossl_raise(eSSLSession, "BIO_s_mem()");
	}

	if (!SSL_SESSION_print(out, ctx)) {
		BIO_free(out);
		ossl_raise(eSSLSession, "SSL_SESSION_print()");
	}

	BIO_get_mem_ptr(out, &buf);
	str = rb_str_new(buf->data, buf->length);
	BIO_free(out);

	return str;
}


void Init_ossl_ssl_session(void)
{
#if 0
	mOSSL = rb_define_module("OpenSSL"); /* let rdoc know about mOSSL */
	mSSL = rb_define_module_under(mOSSL, "SSL");
#endif
	cSSLSession = rb_define_class_under(mSSL, "Session", rb_cObject);
	eSSLSession = rb_define_class_under(cSSLSession, "SessionError", eOSSLError);

	rb_define_alloc_func(cSSLSession, ossl_ssl_session_alloc);
	rb_define_method(cSSLSession, "initialize", ossl_ssl_session_initialize, 1);

	rb_define_method(cSSLSession, "==", ossl_ssl_session_eq, 1);

	rb_define_method(cSSLSession, "time", ossl_ssl_session_get_time, 0);
	rb_define_method(cSSLSession, "time=", ossl_ssl_session_set_time, 1);
	rb_define_method(cSSLSession, "timeout", ossl_ssl_session_get_timeout, 0);
	rb_define_method(cSSLSession, "timeout=", ossl_ssl_session_set_timeout, 1);

#ifdef HAVE_SSL_SESSION_GET_ID
	rb_define_method(cSSLSession, "id", ossl_ssl_session_get_id, 0);
#else
	rb_undef_method(cSSLSession, "id");
#endif
	rb_define_method(cSSLSession, "to_der", ossl_ssl_session_to_der, 0);
	rb_define_method(cSSLSession, "to_pem", ossl_ssl_session_to_pem, 0);
	rb_define_method(cSSLSession, "to_text", ossl_ssl_session_to_text, 0);
}