1 #include "Python.h"
2 #include "../_ssl.h"
3
4 #include "openssl/err.h"
5 #include "openssl/bio.h"
6 #include "openssl/pem.h"
7 #include "openssl/x509.h"
8
9 /*[clinic input]
10 module _ssl
11 class _ssl.Certificate "PySSLCertificate *" "PySSLCertificate_Type"
12 [clinic start generated code]*/
13 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=780fc647948cfffc]*/
14
15 #include "clinic/cert.c.h"
16
17 static PyObject *
18 newCertificate(PyTypeObject *type, X509 *cert, int upref)
19 {
20 PySSLCertificate *self;
21
22 assert(type != NULL && type->tp_alloc != NULL);
23 assert(cert != NULL);
24
25 self = (PySSLCertificate *) type->tp_alloc(type, 0);
26 if (self == NULL) {
27 return NULL;
28 }
29 if (upref == 1) {
30 X509_up_ref(cert);
31 }
32 self->cert = cert;
33 self->hash = -1;
34
35 return (PyObject *) self;
36 }
37
38 static PyObject *
39 _PySSL_CertificateFromX509(_sslmodulestate *state, X509 *cert, int upref)
40 {
41 return newCertificate(state->PySSLCertificate_Type, cert, upref);
42 }
43
44 static PyObject*
45 _PySSL_CertificateFromX509Stack(_sslmodulestate *state, STACK_OF(X509) *stack, int upref)
46 {
47 int len, i;
48 PyObject *result = NULL;
49
50 len = sk_X509_num(stack);
51 result = PyList_New(len);
52 if (result == NULL) {
53 return NULL;
54 }
55 for (i = 0; i < len; i++) {
56 X509 *cert = sk_X509_value(stack, i);
57 PyObject *ocert = _PySSL_CertificateFromX509(state, cert, upref);
58 if (ocert == NULL) {
59 Py_DECREF(result);
60 return NULL;
61 }
62 PyList_SetItem(result, i, ocert);
63 }
64 return result;
65 }
66
67 /*[clinic input]
68 _ssl.Certificate.public_bytes
69 format: int(c_default="PY_SSL_ENCODING_PEM") = Encoding.PEM
70
71 [clinic start generated code]*/
72
73 static PyObject *
74 _ssl_Certificate_public_bytes_impl(PySSLCertificate *self, int format)
75 /*[clinic end generated code: output=c01ddbb697429e12 input=4d38c45e874b0e64]*/
76 {
77 BIO *bio;
78 int retcode;
79 PyObject *result;
80 _sslmodulestate *state = get_state_cert(self);
81
82 bio = BIO_new(BIO_s_mem());
83 if (bio == NULL) {
84 PyErr_SetString(state->PySSLErrorObject,
85 "failed to allocate BIO");
86 return NULL;
87 }
88 switch(format) {
89 case PY_SSL_ENCODING_PEM:
90 retcode = PEM_write_bio_X509(bio, self->cert);
91 break;
92 case PY_SSL_ENCODING_PEM_AUX:
93 retcode = PEM_write_bio_X509_AUX(bio, self->cert);
94 break;
95 case PY_SSL_ENCODING_DER:
96 retcode = i2d_X509_bio(bio, self->cert);
97 break;
98 default:
99 PyErr_SetString(PyExc_ValueError, "Unsupported format");
100 BIO_free(bio);
101 return NULL;
102 }
103 if (retcode != 1) {
104 BIO_free(bio);
105 _setSSLError(state, NULL, 0, __FILE__, __LINE__);
106 return NULL;
107 }
108 if (format == PY_SSL_ENCODING_DER) {
109 result = _PySSL_BytesFromBIO(state, bio);
110 } else {
111 result = _PySSL_UnicodeFromBIO(state, bio, "error");
112 }
113 BIO_free(bio);
114 return result;
115 }
116
117
118 /*[clinic input]
119 _ssl.Certificate.get_info
120
121 [clinic start generated code]*/
122
123 static PyObject *
124 _ssl_Certificate_get_info_impl(PySSLCertificate *self)
125 /*[clinic end generated code: output=0f0deaac54f4408b input=ba2c1694b39d0778]*/
126 {
127 return _decode_certificate(get_state_cert(self), self->cert);
128 }
129
130 static PyObject*
131 _x509name_print(_sslmodulestate *state, X509_NAME *name, int indent, unsigned long flags)
132 {
133 PyObject *res;
134 BIO *biobuf;
135
136 biobuf = BIO_new(BIO_s_mem());
137 if (biobuf == NULL) {
138 PyErr_SetString(PyExc_MemoryError, "failed to allocate BIO");
139 return NULL;
140 }
141
142 if (X509_NAME_print_ex(biobuf, name, indent, flags) <= 0) {
143 _setSSLError(state, NULL, 0, __FILE__, __LINE__);
144 BIO_free(biobuf);
145 return NULL;
146 }
147 res = _PySSL_UnicodeFromBIO(state, biobuf, "strict");
148 BIO_free(biobuf);
149 return res;
150 }
151
152 /* ************************************************************************
153 * PySSLCertificate_Type
154 */
155
156 static PyObject *
157 certificate_repr(PySSLCertificate *self)
158 {
159 PyObject *osubject, *result;
160
161 /* subject string is ASCII encoded, UTF-8 chars are quoted */
162 osubject = _x509name_print(
163 get_state_cert(self),
164 X509_get_subject_name(self->cert),
165 0,
166 XN_FLAG_RFC2253
167 );
168 if (osubject == NULL)
169 return NULL;
170 result = PyUnicode_FromFormat(
171 "<%s '%U'>",
172 Py_TYPE(self)->tp_name, osubject
173 );
174 Py_DECREF(osubject);
175 return result;
176 }
177
178 static Py_hash_t
179 certificate_hash(PySSLCertificate *self)
180 {
181 if (self->hash == (Py_hash_t)-1) {
182 unsigned long hash;
183 hash = X509_subject_name_hash(self->cert);
184 if ((Py_hash_t)hash == (Py_hash_t)-1) {
185 self->hash = -2;
186 } else {
187 self->hash = (Py_hash_t)hash;
188 }
189 }
190 return self->hash;
191 }
192
193 static PyObject *
194 certificate_richcompare(PySSLCertificate *self, PyObject *other, int op)
195 {
196 int cmp;
197 _sslmodulestate *state = get_state_cert(self);
198
199 if (Py_TYPE(other) != state->PySSLCertificate_Type) {
200 Py_RETURN_NOTIMPLEMENTED;
201 }
202 /* only support == and != */
203 if ((op != Py_EQ) && (op != Py_NE)) {
204 Py_RETURN_NOTIMPLEMENTED;
205 }
206 cmp = X509_cmp(self->cert, ((PySSLCertificate*)other)->cert);
207 if (((op == Py_EQ) && (cmp == 0)) || ((op == Py_NE) && (cmp != 0))) {
208 Py_RETURN_TRUE;
209 } else {
210 Py_RETURN_FALSE;
211 }
212 }
213
214 static void
215 certificate_dealloc(PySSLCertificate *self)
216 {
217 PyTypeObject *tp = Py_TYPE(self);
218 X509_free(self->cert);
219 Py_TYPE(self)->tp_free(self);
220 Py_DECREF(tp);
221 }
222
223 static PyMethodDef certificate_methods[] = {
224 /* methods */
225 _SSL_CERTIFICATE_PUBLIC_BYTES_METHODDEF
226 _SSL_CERTIFICATE_GET_INFO_METHODDEF
227 {NULL, NULL}
228 };
229
230 static PyType_Slot PySSLCertificate_slots[] = {
231 {Py_tp_dealloc, certificate_dealloc},
232 {Py_tp_repr, certificate_repr},
233 {Py_tp_hash, certificate_hash},
234 {Py_tp_richcompare, certificate_richcompare},
235 {Py_tp_methods, certificate_methods},
236 {0, 0},
237 };
238
239 static PyType_Spec PySSLCertificate_spec = {
240 "_ssl.Certificate",
241 sizeof(PySSLCertificate),
242 0,
243 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_DISALLOW_INSTANTIATION | Py_TPFLAGS_IMMUTABLETYPE,
244 PySSLCertificate_slots,
245 };