diff options
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Modules/_ssl.c')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Modules/_ssl.c | 1751 |
1 files changed, 1751 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Modules/_ssl.c b/AppPkg/Applications/Python/Python-2.7.2/Modules/_ssl.c new file mode 100644 index 0000000000..9452138305 --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Modules/_ssl.c @@ -0,0 +1,1751 @@ +/* SSL socket module
+
+ SSL support based on patches by Brian E Gallew and Laszlo Kovacs.
+ Re-worked a bit by Bill Janssen to add server-side support and
+ certificate decoding. Chris Stawarz contributed some non-blocking
+ patches.
+
+ This module is imported by ssl.py. It should *not* be used
+ directly.
+
+ XXX should partial writes be enabled, SSL_MODE_ENABLE_PARTIAL_WRITE?
+
+ XXX integrate several "shutdown modes" as suggested in
+ http://bugs.python.org/issue8108#msg102867 ?
+*/
+
+#include "Python.h"
+
+#ifdef WITH_THREAD
+#include "pythread.h"
+#define PySSL_BEGIN_ALLOW_THREADS { \
+ PyThreadState *_save = NULL; \
+ if (_ssl_locks_count>0) {_save = PyEval_SaveThread();}
+#define PySSL_BLOCK_THREADS if (_ssl_locks_count>0){PyEval_RestoreThread(_save)};
+#define PySSL_UNBLOCK_THREADS if (_ssl_locks_count>0){_save = PyEval_SaveThread()};
+#define PySSL_END_ALLOW_THREADS if (_ssl_locks_count>0){PyEval_RestoreThread(_save);} \
+ }
+
+#else /* no WITH_THREAD */
+
+#define PySSL_BEGIN_ALLOW_THREADS
+#define PySSL_BLOCK_THREADS
+#define PySSL_UNBLOCK_THREADS
+#define PySSL_END_ALLOW_THREADS
+
+#endif
+
+enum py_ssl_error {
+ /* these mirror ssl.h */
+ PY_SSL_ERROR_NONE,
+ PY_SSL_ERROR_SSL,
+ PY_SSL_ERROR_WANT_READ,
+ PY_SSL_ERROR_WANT_WRITE,
+ PY_SSL_ERROR_WANT_X509_LOOKUP,
+ PY_SSL_ERROR_SYSCALL, /* look at error stack/return value/errno */
+ PY_SSL_ERROR_ZERO_RETURN,
+ PY_SSL_ERROR_WANT_CONNECT,
+ /* start of non ssl.h errorcodes */
+ PY_SSL_ERROR_EOF, /* special case of SSL_ERROR_SYSCALL */
+ PY_SSL_ERROR_INVALID_ERROR_CODE
+};
+
+enum py_ssl_server_or_client {
+ PY_SSL_CLIENT,
+ PY_SSL_SERVER
+};
+
+enum py_ssl_cert_requirements {
+ PY_SSL_CERT_NONE,
+ PY_SSL_CERT_OPTIONAL,
+ PY_SSL_CERT_REQUIRED
+};
+
+enum py_ssl_version {
+#ifndef OPENSSL_NO_SSL2
+ PY_SSL_VERSION_SSL2,
+#endif
+ PY_SSL_VERSION_SSL3=1,
+ PY_SSL_VERSION_SSL23,
+ PY_SSL_VERSION_TLS1
+};
+
+/* Include symbols from _socket module */
+#include "socketmodule.h"
+
+#if defined(HAVE_POLL_H)
+#include <poll.h>
+#elif defined(HAVE_SYS_POLL_H)
+#include <sys/poll.h>
+#endif
+
+/* Include OpenSSL header files */
+#include "openssl/rsa.h"
+#include "openssl/crypto.h"
+#include "openssl/x509.h"
+#include "openssl/x509v3.h"
+#include "openssl/pem.h"
+#include "openssl/ssl.h"
+#include "openssl/err.h"
+#include "openssl/rand.h"
+
+/* SSL error object */
+static PyObject *PySSLErrorObject;
+
+#ifdef WITH_THREAD
+
+/* serves as a flag to see whether we've initialized the SSL thread support. */
+/* 0 means no, greater than 0 means yes */
+
+static unsigned int _ssl_locks_count = 0;
+
+#endif /* def WITH_THREAD */
+
+/* SSL socket object */
+
+#define X509_NAME_MAXLEN 256
+
+/* RAND_* APIs got added to OpenSSL in 0.9.5 */
+#if OPENSSL_VERSION_NUMBER >= 0x0090500fL
+# define HAVE_OPENSSL_RAND 1
+#else
+# undef HAVE_OPENSSL_RAND
+#endif
+
+typedef struct {
+ PyObject_HEAD
+ PySocketSockObject *Socket; /* Socket on which we're layered */
+ SSL_CTX* ctx;
+ SSL* ssl;
+ X509* peer_cert;
+ char server[X509_NAME_MAXLEN];
+ char issuer[X509_NAME_MAXLEN];
+ int shutdown_seen_zero;
+
+} PySSLObject;
+
+static PyTypeObject PySSL_Type;
+static PyObject *PySSL_SSLwrite(PySSLObject *self, PyObject *args);
+static PyObject *PySSL_SSLread(PySSLObject *self, PyObject *args);
+static int check_socket_and_wait_for_timeout(PySocketSockObject *s,
+ int writing);
+static PyObject *PySSL_peercert(PySSLObject *self, PyObject *args);
+static PyObject *PySSL_cipher(PySSLObject *self);
+
+#define PySSLObject_Check(v) (Py_TYPE(v) == &PySSL_Type)
+
+typedef enum {
+ SOCKET_IS_NONBLOCKING,
+ SOCKET_IS_BLOCKING,
+ SOCKET_HAS_TIMED_OUT,
+ SOCKET_HAS_BEEN_CLOSED,
+ SOCKET_TOO_LARGE_FOR_SELECT,
+ SOCKET_OPERATION_OK
+} timeout_state;
+
+/* Wrap error strings with filename and line # */
+#define STRINGIFY1(x) #x
+#define STRINGIFY2(x) STRINGIFY1(x)
+#define ERRSTR1(x,y,z) (x ":" y ": " z)
+#define ERRSTR(x) ERRSTR1("_ssl.c", STRINGIFY2(__LINE__), x)
+
+/* XXX It might be helpful to augment the error message generated
+ below with the name of the SSL function that generated the error.
+ I expect it's obvious most of the time.
+*/
+
+static PyObject *
+PySSL_SetError(PySSLObject *obj, int ret, char *filename, int lineno)
+{
+ PyObject *v;
+ char buf[2048];
+ char *errstr;
+ int err;
+ enum py_ssl_error p = PY_SSL_ERROR_NONE;
+
+ assert(ret <= 0);
+
+ if (obj->ssl != NULL) {
+ err = SSL_get_error(obj->ssl, ret);
+
+ switch (err) {
+ case SSL_ERROR_ZERO_RETURN:
+ errstr = "TLS/SSL connection has been closed";
+ p = PY_SSL_ERROR_ZERO_RETURN;
+ break;
+ case SSL_ERROR_WANT_READ:
+ errstr = "The operation did not complete (read)";
+ p = PY_SSL_ERROR_WANT_READ;
+ break;
+ case SSL_ERROR_WANT_WRITE:
+ p = PY_SSL_ERROR_WANT_WRITE;
+ errstr = "The operation did not complete (write)";
+ break;
+ case SSL_ERROR_WANT_X509_LOOKUP:
+ p = PY_SSL_ERROR_WANT_X509_LOOKUP;
+ errstr = "The operation did not complete (X509 lookup)";
+ break;
+ case SSL_ERROR_WANT_CONNECT:
+ p = PY_SSL_ERROR_WANT_CONNECT;
+ errstr = "The operation did not complete (connect)";
+ break;
+ case SSL_ERROR_SYSCALL:
+ {
+ unsigned long e = ERR_get_error();
+ if (e == 0) {
+ if (ret == 0 || !obj->Socket) {
+ p = PY_SSL_ERROR_EOF;
+ errstr = "EOF occurred in violation of protocol";
+ } else if (ret == -1) {
+ /* underlying BIO reported an I/O error */
+ ERR_clear_error();
+ return obj->Socket->errorhandler();
+ } else { /* possible? */
+ p = PY_SSL_ERROR_SYSCALL;
+ errstr = "Some I/O error occurred";
+ }
+ } else {
+ p = PY_SSL_ERROR_SYSCALL;
+ /* XXX Protected by global interpreter lock */
+ errstr = ERR_error_string(e, NULL);
+ }
+ break;
+ }
+ case SSL_ERROR_SSL:
+ {
+ unsigned long e = ERR_get_error();
+ p = PY_SSL_ERROR_SSL;
+ if (e != 0)
+ /* XXX Protected by global interpreter lock */
+ errstr = ERR_error_string(e, NULL);
+ else { /* possible? */
+ errstr = "A failure in the SSL library occurred";
+ }
+ break;
+ }
+ default:
+ p = PY_SSL_ERROR_INVALID_ERROR_CODE;
+ errstr = "Invalid error code";
+ }
+ } else {
+ errstr = ERR_error_string(ERR_peek_last_error(), NULL);
+ }
+ PyOS_snprintf(buf, sizeof(buf), "_ssl.c:%d: %s", lineno, errstr);
+ ERR_clear_error();
+ v = Py_BuildValue("(is)", p, buf);
+ if (v != NULL) {
+ PyErr_SetObject(PySSLErrorObject, v);
+ Py_DECREF(v);
+ }
+ return NULL;
+}
+
+static PyObject *
+_setSSLError (char *errstr, int errcode, char *filename, int lineno) {
+
+ char buf[2048];
+ PyObject *v;
+
+ if (errstr == NULL) {
+ errcode = ERR_peek_last_error();
+ errstr = ERR_error_string(errcode, NULL);
+ }
+ PyOS_snprintf(buf, sizeof(buf), "_ssl.c:%d: %s", lineno, errstr);
+ ERR_clear_error();
+ v = Py_BuildValue("(is)", errcode, buf);
+ if (v != NULL) {
+ PyErr_SetObject(PySSLErrorObject, v);
+ Py_DECREF(v);
+ }
+ return NULL;
+}
+
+static PySSLObject *
+newPySSLObject(PySocketSockObject *Sock, char *key_file, char *cert_file,
+ enum py_ssl_server_or_client socket_type,
+ enum py_ssl_cert_requirements certreq,
+ enum py_ssl_version proto_version,
+ char *cacerts_file, char *ciphers)
+{
+ PySSLObject *self;
+ char *errstr = NULL;
+ int ret;
+ int verification_mode;
+
+ self = PyObject_New(PySSLObject, &PySSL_Type); /* Create new object */
+ if (self == NULL)
+ return NULL;
+ memset(self->server, '\0', sizeof(char) * X509_NAME_MAXLEN);
+ memset(self->issuer, '\0', sizeof(char) * X509_NAME_MAXLEN);
+ self->peer_cert = NULL;
+ self->ssl = NULL;
+ self->ctx = NULL;
+ self->Socket = NULL;
+
+ /* Make sure the SSL error state is initialized */
+ (void) ERR_get_state();
+ ERR_clear_error();
+
+ if ((key_file && !cert_file) || (!key_file && cert_file)) {
+ errstr = ERRSTR("Both the key & certificate files "
+ "must be specified");
+ goto fail;
+ }
+
+ if ((socket_type == PY_SSL_SERVER) &&
+ ((key_file == NULL) || (cert_file == NULL))) {
+ errstr = ERRSTR("Both the key & certificate files "
+ "must be specified for server-side operation");
+ goto fail;
+ }
+
+ PySSL_BEGIN_ALLOW_THREADS
+ if (proto_version == PY_SSL_VERSION_TLS1)
+ self->ctx = SSL_CTX_new(TLSv1_method()); /* Set up context */
+ else if (proto_version == PY_SSL_VERSION_SSL3)
+ self->ctx = SSL_CTX_new(SSLv3_method()); /* Set up context */
+#ifndef OPENSSL_NO_SSL2
+ else if (proto_version == PY_SSL_VERSION_SSL2)
+ self->ctx = SSL_CTX_new(SSLv2_method()); /* Set up context */
+#endif
+ else if (proto_version == PY_SSL_VERSION_SSL23)
+ self->ctx = SSL_CTX_new(SSLv23_method()); /* Set up context */
+ PySSL_END_ALLOW_THREADS
+
+ if (self->ctx == NULL) {
+ errstr = ERRSTR("Invalid SSL protocol variant specified.");
+ goto fail;
+ }
+
+ if (ciphers != NULL) {
+ ret = SSL_CTX_set_cipher_list(self->ctx, ciphers);
+ if (ret == 0) {
+ errstr = ERRSTR("No cipher can be selected.");
+ goto fail;
+ }
+ }
+
+ if (certreq != PY_SSL_CERT_NONE) {
+ if (cacerts_file == NULL) {
+ errstr = ERRSTR("No root certificates specified for "
+ "verification of other-side certificates.");
+ goto fail;
+ } else {
+ PySSL_BEGIN_ALLOW_THREADS
+ ret = SSL_CTX_load_verify_locations(self->ctx,
+ cacerts_file,
+ NULL);
+ PySSL_END_ALLOW_THREADS
+ if (ret != 1) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail;
+ }
+ }
+ }
+ if (key_file) {
+ PySSL_BEGIN_ALLOW_THREADS
+ ret = SSL_CTX_use_PrivateKey_file(self->ctx, key_file,
+ SSL_FILETYPE_PEM);
+ PySSL_END_ALLOW_THREADS
+ if (ret != 1) {
+ _setSSLError(NULL, ret, __FILE__, __LINE__);
+ goto fail;
+ }
+
+ PySSL_BEGIN_ALLOW_THREADS
+ ret = SSL_CTX_use_certificate_chain_file(self->ctx,
+ cert_file);
+ PySSL_END_ALLOW_THREADS
+ if (ret != 1) {
+ /*
+ fprintf(stderr, "ret is %d, errcode is %lu, %lu, with file \"%s\"\n",
+ ret, ERR_peek_error(), ERR_peek_last_error(), cert_file);
+ */
+ if (ERR_peek_last_error() != 0) {
+ _setSSLError(NULL, ret, __FILE__, __LINE__);
+ goto fail;
+ }
+ }
+ }
+
+ /* ssl compatibility */
+ SSL_CTX_set_options(self->ctx, SSL_OP_ALL);
+
+ verification_mode = SSL_VERIFY_NONE;
+ if (certreq == PY_SSL_CERT_OPTIONAL)
+ verification_mode = SSL_VERIFY_PEER;
+ else if (certreq == PY_SSL_CERT_REQUIRED)
+ verification_mode = (SSL_VERIFY_PEER |
+ SSL_VERIFY_FAIL_IF_NO_PEER_CERT);
+ SSL_CTX_set_verify(self->ctx, verification_mode,
+ NULL); /* set verify lvl */
+
+ PySSL_BEGIN_ALLOW_THREADS
+ self->ssl = SSL_new(self->ctx); /* New ssl struct */
+ PySSL_END_ALLOW_THREADS
+ SSL_set_fd(self->ssl, Sock->sock_fd); /* Set the socket for SSL */
+#ifdef SSL_MODE_AUTO_RETRY
+ SSL_set_mode(self->ssl, SSL_MODE_AUTO_RETRY);
+#endif
+
+ /* If the socket is in non-blocking mode or timeout mode, set the BIO
+ * to non-blocking mode (blocking is the default)
+ */
+ if (Sock->sock_timeout >= 0.0) {
+ /* Set both the read and write BIO's to non-blocking mode */
+ BIO_set_nbio(SSL_get_rbio(self->ssl), 1);
+ BIO_set_nbio(SSL_get_wbio(self->ssl), 1);
+ }
+
+ PySSL_BEGIN_ALLOW_THREADS
+ if (socket_type == PY_SSL_CLIENT)
+ SSL_set_connect_state(self->ssl);
+ else
+ SSL_set_accept_state(self->ssl);
+ PySSL_END_ALLOW_THREADS
+
+ self->Socket = Sock;
+ Py_INCREF(self->Socket);
+ return self;
+ fail:
+ if (errstr)
+ PyErr_SetString(PySSLErrorObject, errstr);
+ Py_DECREF(self);
+ return NULL;
+}
+
+static PyObject *
+PySSL_sslwrap(PyObject *self, PyObject *args)
+{
+ PySocketSockObject *Sock;
+ int server_side = 0;
+ int verification_mode = PY_SSL_CERT_NONE;
+ int protocol = PY_SSL_VERSION_SSL23;
+ char *key_file = NULL;
+ char *cert_file = NULL;
+ char *cacerts_file = NULL;
+ char *ciphers = NULL;
+
+ if (!PyArg_ParseTuple(args, "O!i|zziizz:sslwrap",
+ PySocketModule.Sock_Type,
+ &Sock,
+ &server_side,
+ &key_file, &cert_file,
+ &verification_mode, &protocol,
+ &cacerts_file, &ciphers))
+ return NULL;
+
+ /*
+ fprintf(stderr,
+ "server_side is %d, keyfile %p, certfile %p, verify_mode %d, "
+ "protocol %d, certs %p\n",
+ server_side, key_file, cert_file, verification_mode,
+ protocol, cacerts_file);
+ */
+
+ return (PyObject *) newPySSLObject(Sock, key_file, cert_file,
+ server_side, verification_mode,
+ protocol, cacerts_file,
+ ciphers);
+}
+
+PyDoc_STRVAR(ssl_doc,
+"sslwrap(socket, server_side, [keyfile, certfile, certs_mode, protocol,\n"
+" cacertsfile, ciphers]) -> sslobject");
+
+/* SSL object methods */
+
+static PyObject *PySSL_SSLdo_handshake(PySSLObject *self)
+{
+ int ret;
+ int err;
+ int sockstate, nonblocking;
+
+ /* just in case the blocking state of the socket has been changed */
+ nonblocking = (self->Socket->sock_timeout >= 0.0);
+ BIO_set_nbio(SSL_get_rbio(self->ssl), nonblocking);
+ BIO_set_nbio(SSL_get_wbio(self->ssl), nonblocking);
+
+ /* Actually negotiate SSL connection */
+ /* XXX If SSL_do_handshake() returns 0, it's also a failure. */
+ do {
+ PySSL_BEGIN_ALLOW_THREADS
+ ret = SSL_do_handshake(self->ssl);
+ err = SSL_get_error(self->ssl, ret);
+ PySSL_END_ALLOW_THREADS
+ if(PyErr_CheckSignals()) {
+ return NULL;
+ }
+ if (err == SSL_ERROR_WANT_READ) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 0);
+ } else if (err == SSL_ERROR_WANT_WRITE) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 1);
+ } else {
+ sockstate = SOCKET_OPERATION_OK;
+ }
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ PyErr_SetString(PySSLErrorObject,
+ ERRSTR("The handshake operation timed out"));
+ return NULL;
+ } else if (sockstate == SOCKET_HAS_BEEN_CLOSED) {
+ PyErr_SetString(PySSLErrorObject,
+ ERRSTR("Underlying socket has been closed."));
+ return NULL;
+ } else if (sockstate == SOCKET_TOO_LARGE_FOR_SELECT) {
+ PyErr_SetString(PySSLErrorObject,
+ ERRSTR("Underlying socket too large for select()."));
+ return NULL;
+ } else if (sockstate == SOCKET_IS_NONBLOCKING) {
+ break;
+ }
+ } while (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE);
+ if (ret < 1)
+ return PySSL_SetError(self, ret, __FILE__, __LINE__);
+
+ if (self->peer_cert)
+ X509_free (self->peer_cert);
+ PySSL_BEGIN_ALLOW_THREADS
+ if ((self->peer_cert = SSL_get_peer_certificate(self->ssl))) {
+ X509_NAME_oneline(X509_get_subject_name(self->peer_cert),
+ self->server, X509_NAME_MAXLEN);
+ X509_NAME_oneline(X509_get_issuer_name(self->peer_cert),
+ self->issuer, X509_NAME_MAXLEN);
+ }
+ PySSL_END_ALLOW_THREADS
+
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+static PyObject *
+PySSL_server(PySSLObject *self)
+{
+ return PyString_FromString(self->server);
+}
+
+static PyObject *
+PySSL_issuer(PySSLObject *self)
+{
+ return PyString_FromString(self->issuer);
+}
+
+static PyObject *
+_create_tuple_for_attribute (ASN1_OBJECT *name, ASN1_STRING *value) {
+
+ char namebuf[X509_NAME_MAXLEN];
+ int buflen;
+ PyObject *name_obj;
+ PyObject *value_obj;
+ PyObject *attr;
+ unsigned char *valuebuf = NULL;
+
+ buflen = OBJ_obj2txt(namebuf, sizeof(namebuf), name, 0);
+ if (buflen < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail;
+ }
+ name_obj = PyString_FromStringAndSize(namebuf, buflen);
+ if (name_obj == NULL)
+ goto fail;
+
+ buflen = ASN1_STRING_to_UTF8(&valuebuf, value);
+ if (buflen < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ Py_DECREF(name_obj);
+ goto fail;
+ }
+ value_obj = PyUnicode_DecodeUTF8((char *) valuebuf,
+ buflen, "strict");
+ OPENSSL_free(valuebuf);
+ if (value_obj == NULL) {
+ Py_DECREF(name_obj);
+ goto fail;
+ }
+ attr = PyTuple_New(2);
+ if (attr == NULL) {
+ Py_DECREF(name_obj);
+ Py_DECREF(value_obj);
+ goto fail;
+ }
+ PyTuple_SET_ITEM(attr, 0, name_obj);
+ PyTuple_SET_ITEM(attr, 1, value_obj);
+ return attr;
+
+ fail:
+ return NULL;
+}
+
+static PyObject *
+_create_tuple_for_X509_NAME (X509_NAME *xname)
+{
+ PyObject *dn = NULL; /* tuple which represents the "distinguished name" */
+ PyObject *rdn = NULL; /* tuple to hold a "relative distinguished name" */
+ PyObject *rdnt;
+ PyObject *attr = NULL; /* tuple to hold an attribute */
+ int entry_count = X509_NAME_entry_count(xname);
+ X509_NAME_ENTRY *entry;
+ ASN1_OBJECT *name;
+ ASN1_STRING *value;
+ int index_counter;
+ int rdn_level = -1;
+ int retcode;
+
+ dn = PyList_New(0);
+ if (dn == NULL)
+ return NULL;
+ /* now create another tuple to hold the top-level RDN */
+ rdn = PyList_New(0);
+ if (rdn == NULL)
+ goto fail0;
+
+ for (index_counter = 0;
+ index_counter < entry_count;
+ index_counter++)
+ {
+ entry = X509_NAME_get_entry(xname, index_counter);
+
+ /* check to see if we've gotten to a new RDN */
+ if (rdn_level >= 0) {
+ if (rdn_level != entry->set) {
+ /* yes, new RDN */
+ /* add old RDN to DN */
+ rdnt = PyList_AsTuple(rdn);
+ Py_DECREF(rdn);
+ if (rdnt == NULL)
+ goto fail0;
+ retcode = PyList_Append(dn, rdnt);
+ Py_DECREF(rdnt);
+ if (retcode < 0)
+ goto fail0;
+ /* create new RDN */
+ rdn = PyList_New(0);
+ if (rdn == NULL)
+ goto fail0;
+ }
+ }
+ rdn_level = entry->set;
+
+ /* now add this attribute to the current RDN */
+ name = X509_NAME_ENTRY_get_object(entry);
+ value = X509_NAME_ENTRY_get_data(entry);
+ attr = _create_tuple_for_attribute(name, value);
+ /*
+ fprintf(stderr, "RDN level %d, attribute %s: %s\n",
+ entry->set,
+ PyString_AS_STRING(PyTuple_GET_ITEM(attr, 0)),
+ PyString_AS_STRING(PyTuple_GET_ITEM(attr, 1)));
+ */
+ if (attr == NULL)
+ goto fail1;
+ retcode = PyList_Append(rdn, attr);
+ Py_DECREF(attr);
+ if (retcode < 0)
+ goto fail1;
+ }
+ /* now, there's typically a dangling RDN */
+ if ((rdn != NULL) && (PyList_Size(rdn) > 0)) {
+ rdnt = PyList_AsTuple(rdn);
+ Py_DECREF(rdn);
+ if (rdnt == NULL)
+ goto fail0;
+ retcode = PyList_Append(dn, rdnt);
+ Py_DECREF(rdnt);
+ if (retcode < 0)
+ goto fail0;
+ }
+
+ /* convert list to tuple */
+ rdnt = PyList_AsTuple(dn);
+ Py_DECREF(dn);
+ if (rdnt == NULL)
+ return NULL;
+ return rdnt;
+
+ fail1:
+ Py_XDECREF(rdn);
+
+ fail0:
+ Py_XDECREF(dn);
+ return NULL;
+}
+
+static PyObject *
+_get_peer_alt_names (X509 *certificate) {
+
+ /* this code follows the procedure outlined in
+ OpenSSL's crypto/x509v3/v3_prn.c:X509v3_EXT_print()
+ function to extract the STACK_OF(GENERAL_NAME),
+ then iterates through the stack to add the
+ names. */
+
+ int i, j;
+ PyObject *peer_alt_names = Py_None;
+ PyObject *v, *t;
+ X509_EXTENSION *ext = NULL;
+ GENERAL_NAMES *names = NULL;
+ GENERAL_NAME *name;
+ const X509V3_EXT_METHOD *method;
+ BIO *biobuf = NULL;
+ char buf[2048];
+ char *vptr;
+ int len;
+ /* Issue #2973: ASN1_item_d2i() API changed in OpenSSL 0.9.6m */
+#if OPENSSL_VERSION_NUMBER >= 0x009060dfL
+ const unsigned char *p;
+#else
+ unsigned char *p;
+#endif
+
+ if (certificate == NULL)
+ return peer_alt_names;
+
+ /* get a memory buffer */
+ biobuf = BIO_new(BIO_s_mem());
+
+ i = 0;
+ while ((i = X509_get_ext_by_NID(
+ certificate, NID_subject_alt_name, i)) >= 0) {
+
+ if (peer_alt_names == Py_None) {
+ peer_alt_names = PyList_New(0);
+ if (peer_alt_names == NULL)
+ goto fail;
+ }
+
+ /* now decode the altName */
+ ext = X509_get_ext(certificate, i);
+ if(!(method = X509V3_EXT_get(ext))) {
+ PyErr_SetString(PySSLErrorObject,
+ ERRSTR("No method for internalizing subjectAltName!"));
+ goto fail;
+ }
+
+ p = ext->value->data;
+ if (method->it)
+ names = (GENERAL_NAMES*) (ASN1_item_d2i(NULL,
+ &p,
+ ext->value->length,
+ ASN1_ITEM_ptr(method->it)));
+ else
+ names = (GENERAL_NAMES*) (method->d2i(NULL,
+ &p,
+ ext->value->length));
+
+ for(j = 0; j < sk_GENERAL_NAME_num(names); j++) {
+
+ /* get a rendering of each name in the set of names */
+
+ name = sk_GENERAL_NAME_value(names, j);
+ if (name->type == GEN_DIRNAME) {
+
+ /* we special-case DirName as a tuple of tuples of attributes */
+
+ t = PyTuple_New(2);
+ if (t == NULL) {
+ goto fail;
+ }
+
+ v = PyString_FromString("DirName");
+ if (v == NULL) {
+ Py_DECREF(t);
+ goto fail;
+ }
+ PyTuple_SET_ITEM(t, 0, v);
+
+ v = _create_tuple_for_X509_NAME (name->d.dirn);
+ if (v == NULL) {
+ Py_DECREF(t);
+ goto fail;
+ }
+ PyTuple_SET_ITEM(t, 1, v);
+
+ } else {
+
+ /* for everything else, we use the OpenSSL print form */
+
+ (void) BIO_reset(biobuf);
+ GENERAL_NAME_print(biobuf, name);
+ len = BIO_gets(biobuf, buf, sizeof(buf)-1);
+ if (len < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail;
+ }
+ vptr = strchr(buf, ':');
+ if (vptr == NULL)
+ goto fail;
+ t = PyTuple_New(2);
+ if (t == NULL)
+ goto fail;
+ v = PyString_FromStringAndSize(buf, (vptr - buf));
+ if (v == NULL) {
+ Py_DECREF(t);
+ goto fail;
+ }
+ PyTuple_SET_ITEM(t, 0, v);
+ v = PyString_FromStringAndSize((vptr + 1), (len - (vptr - buf + 1)));
+ if (v == NULL) {
+ Py_DECREF(t);
+ goto fail;
+ }
+ PyTuple_SET_ITEM(t, 1, v);
+ }
+
+ /* and add that rendering to the list */
+
+ if (PyList_Append(peer_alt_names, t) < 0) {
+ Py_DECREF(t);
+ goto fail;
+ }
+ Py_DECREF(t);
+ }
+ }
+ BIO_free(biobuf);
+ if (peer_alt_names != Py_None) {
+ v = PyList_AsTuple(peer_alt_names);
+ Py_DECREF(peer_alt_names);
+ return v;
+ } else {
+ return peer_alt_names;
+ }
+
+
+ fail:
+ if (biobuf != NULL)
+ BIO_free(biobuf);
+
+ if (peer_alt_names != Py_None) {
+ Py_XDECREF(peer_alt_names);
+ }
+
+ return NULL;
+}
+
+static PyObject *
+_decode_certificate (X509 *certificate, int verbose) {
+
+ PyObject *retval = NULL;
+ BIO *biobuf = NULL;
+ PyObject *peer;
+ PyObject *peer_alt_names = NULL;
+ PyObject *issuer;
+ PyObject *version;
+ PyObject *sn_obj;
+ ASN1_INTEGER *serialNumber;
+ char buf[2048];
+ int len;
+ ASN1_TIME *notBefore, *notAfter;
+ PyObject *pnotBefore, *pnotAfter;
+
+ retval = PyDict_New();
+ if (retval == NULL)
+ return NULL;
+
+ peer = _create_tuple_for_X509_NAME(
+ X509_get_subject_name(certificate));
+ if (peer == NULL)
+ goto fail0;
+ if (PyDict_SetItemString(retval, (const char *) "subject", peer) < 0) {
+ Py_DECREF(peer);
+ goto fail0;
+ }
+ Py_DECREF(peer);
+
+ if (verbose) {
+ issuer = _create_tuple_for_X509_NAME(
+ X509_get_issuer_name(certificate));
+ if (issuer == NULL)
+ goto fail0;
+ if (PyDict_SetItemString(retval, (const char *)"issuer", issuer) < 0) {
+ Py_DECREF(issuer);
+ goto fail0;
+ }
+ Py_DECREF(issuer);
+
+ version = PyInt_FromLong(X509_get_version(certificate) + 1);
+ if (PyDict_SetItemString(retval, "version", version) < 0) {
+ Py_DECREF(version);
+ goto fail0;
+ }
+ Py_DECREF(version);
+ }
+
+ /* get a memory buffer */
+ biobuf = BIO_new(BIO_s_mem());
+
+ if (verbose) {
+
+ (void) BIO_reset(biobuf);
+ serialNumber = X509_get_serialNumber(certificate);
+ /* should not exceed 20 octets, 160 bits, so buf is big enough */
+ i2a_ASN1_INTEGER(biobuf, serialNumber);
+ len = BIO_gets(biobuf, buf, sizeof(buf)-1);
+ if (len < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail1;
+ }
+ sn_obj = PyString_FromStringAndSize(buf, len);
+ if (sn_obj == NULL)
+ goto fail1;
+ if (PyDict_SetItemString(retval, "serialNumber", sn_obj) < 0) {
+ Py_DECREF(sn_obj);
+ goto fail1;
+ }
+ Py_DECREF(sn_obj);
+
+ (void) BIO_reset(biobuf);
+ notBefore = X509_get_notBefore(certificate);
+ ASN1_TIME_print(biobuf, notBefore);
+ len = BIO_gets(biobuf, buf, sizeof(buf)-1);
+ if (len < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail1;
+ }
+ pnotBefore = PyString_FromStringAndSize(buf, len);
+ if (pnotBefore == NULL)
+ goto fail1;
+ if (PyDict_SetItemString(retval, "notBefore", pnotBefore) < 0) {
+ Py_DECREF(pnotBefore);
+ goto fail1;
+ }
+ Py_DECREF(pnotBefore);
+ }
+
+ (void) BIO_reset(biobuf);
+ notAfter = X509_get_notAfter(certificate);
+ ASN1_TIME_print(biobuf, notAfter);
+ len = BIO_gets(biobuf, buf, sizeof(buf)-1);
+ if (len < 0) {
+ _setSSLError(NULL, 0, __FILE__, __LINE__);
+ goto fail1;
+ }
+ pnotAfter = PyString_FromStringAndSize(buf, len);
+ if (pnotAfter == NULL)
+ goto fail1;
+ if (PyDict_SetItemString(retval, "notAfter", pnotAfter) < 0) {
+ Py_DECREF(pnotAfter);
+ goto fail1;
+ }
+ Py_DECREF(pnotAfter);
+
+ /* Now look for subjectAltName */
+
+ peer_alt_names = _get_peer_alt_names(certificate);
+ if (peer_alt_names == NULL)
+ goto fail1;
+ else if (peer_alt_names != Py_None) {
+ if (PyDict_SetItemString(retval, "subjectAltName",
+ peer_alt_names) < 0) {
+ Py_DECREF(peer_alt_names);
+ goto fail1;
+ }
+ Py_DECREF(peer_alt_names);
+ }
+
+ BIO_free(biobuf);
+ return retval;
+
+ fail1:
+ if (biobuf != NULL)
+ BIO_free(biobuf);
+ fail0:
+ Py_XDECREF(retval);
+ return NULL;
+}
+
+
+static PyObject *
+PySSL_test_decode_certificate (PyObject *mod, PyObject *args) {
+
+ PyObject *retval = NULL;
+ char *filename = NULL;
+ X509 *x=NULL;
+ BIO *cert;
+ int verbose = 1;
+
+ if (!PyArg_ParseTuple(args, "s|i:test_decode_certificate", &filename, &verbose))
+ return NULL;
+
+ if ((cert=BIO_new(BIO_s_file())) == NULL) {
+ PyErr_SetString(PySSLErrorObject, "Can't malloc memory to read file");
+ goto fail0;
+ }
+
+ if (BIO_read_filename(cert,filename) <= 0) {
+ PyErr_SetString(PySSLErrorObject, "Can't open file");
+ goto fail0;
+ }
+
+ x = PEM_read_bio_X509_AUX(cert,NULL, NULL, NULL);
+ if (x == NULL) {
+ PyErr_SetString(PySSLErrorObject, "Error decoding PEM-encoded file");
+ goto fail0;
+ }
+
+ retval = _decode_certificate(x, verbose);
+ X509_free(x);
+
+ fail0:
+
+ if (cert != NULL) BIO_free(cert);
+ return retval;
+}
+
+
+static PyObject *
+PySSL_peercert(PySSLObject *self, PyObject *args)
+{
+ PyObject *retval = NULL;
+ int len;
+ int verification;
+ PyObject *binary_mode = Py_None;
+
+ if (!PyArg_ParseTuple(args, "|O:peer_certificate", &binary_mode))
+ return NULL;
+
+ if (!self->peer_cert)
+ Py_RETURN_NONE;
+
+ if (PyObject_IsTrue(binary_mode)) {
+ /* return cert in DER-encoded format */
+
+ unsigned char *bytes_buf = NULL;
+
+ bytes_buf = NULL;
+ len = i2d_X509(self->peer_cert, &bytes_buf);
+ if (len < 0) {
+ PySSL_SetError(self, len, __FILE__, __LINE__);
+ return NULL;
+ }
+ retval = PyString_FromStringAndSize((const char *) bytes_buf, len);
+ OPENSSL_free(bytes_buf);
+ return retval;
+
+ } else {
+
+ verification = SSL_CTX_get_verify_mode(self->ctx);
+ if ((verification & SSL_VERIFY_PEER) == 0)
+ return PyDict_New();
+ else
+ return _decode_certificate (self->peer_cert, 0);
+ }
+}
+
+PyDoc_STRVAR(PySSL_peercert_doc,
+"peer_certificate([der=False]) -> certificate\n\
+\n\
+Returns the certificate for the peer. If no certificate was provided,\n\
+returns None. If a certificate was provided, but not validated, returns\n\
+an empty dictionary. Otherwise returns a dict containing information\n\
+about the peer certificate.\n\
+\n\
+If the optional argument is True, returns a DER-encoded copy of the\n\
+peer certificate, or None if no certificate was provided. This will\n\
+return the certificate even if it wasn't validated.");
+
+static PyObject *PySSL_cipher (PySSLObject *self) {
+
+ PyObject *retval, *v;
+ const SSL_CIPHER *current;
+ char *cipher_name;
+ char *cipher_protocol;
+
+ if (self->ssl == NULL)
+ Py_RETURN_NONE;
+ current = SSL_get_current_cipher(self->ssl);
+ if (current == NULL)
+ Py_RETURN_NONE;
+
+ retval = PyTuple_New(3);
+ if (retval == NULL)
+ return NULL;
+
+ cipher_name = (char *) SSL_CIPHER_get_name(current);
+ if (cipher_name == NULL) {
+ Py_INCREF(Py_None);
+ PyTuple_SET_ITEM(retval, 0, Py_None);
+ } else {
+ v = PyString_FromString(cipher_name);
+ if (v == NULL)
+ goto fail0;
+ PyTuple_SET_ITEM(retval, 0, v);
+ }
+ cipher_protocol = SSL_CIPHER_get_version(current);
+ if (cipher_protocol == NULL) {
+ Py_INCREF(Py_None);
+ PyTuple_SET_ITEM(retval, 1, Py_None);
+ } else {
+ v = PyString_FromString(cipher_protocol);
+ if (v == NULL)
+ goto fail0;
+ PyTuple_SET_ITEM(retval, 1, v);
+ }
+ v = PyInt_FromLong(SSL_CIPHER_get_bits(current, NULL));
+ if (v == NULL)
+ goto fail0;
+ PyTuple_SET_ITEM(retval, 2, v);
+ return retval;
+
+ fail0:
+ Py_DECREF(retval);
+ return NULL;
+}
+
+static void PySSL_dealloc(PySSLObject *self)
+{
+ if (self->peer_cert) /* Possible not to have one? */
+ X509_free (self->peer_cert);
+ if (self->ssl)
+ SSL_free(self->ssl);
+ if (self->ctx)
+ SSL_CTX_free(self->ctx);
+ Py_XDECREF(self->Socket);
+ PyObject_Del(self);
+}
+
+/* If the socket has a timeout, do a select()/poll() on the socket.
+ The argument writing indicates the direction.
+ Returns one of the possibilities in the timeout_state enum (above).
+ */
+
+static int
+check_socket_and_wait_for_timeout(PySocketSockObject *s, int writing)
+{
+ fd_set fds;
+ struct timeval tv;
+ int rc;
+
+ /* Nothing to do unless we're in timeout mode (not non-blocking) */
+ if (s->sock_timeout < 0.0)
+ return SOCKET_IS_BLOCKING;
+ else if (s->sock_timeout == 0.0)
+ return SOCKET_IS_NONBLOCKING;
+
+ /* Guard against closed socket */
+ if (s->sock_fd < 0)
+ return SOCKET_HAS_BEEN_CLOSED;
+
+ /* Prefer poll, if available, since you can poll() any fd
+ * which can't be done with select(). */
+#ifdef HAVE_POLL
+ {
+ struct pollfd pollfd;
+ int timeout;
+
+ pollfd.fd = s->sock_fd;
+ pollfd.events = writing ? POLLOUT : POLLIN;
+
+ /* s->sock_timeout is in seconds, timeout in ms */
+ timeout = (int)(s->sock_timeout * 1000 + 0.5);
+ PySSL_BEGIN_ALLOW_THREADS
+ rc = poll(&pollfd, 1, timeout);
+ PySSL_END_ALLOW_THREADS
+
+ goto normal_return;
+ }
+#endif
+
+ /* Guard against socket too large for select*/
+#ifndef Py_SOCKET_FD_CAN_BE_GE_FD_SETSIZE
+ if (s->sock_fd >= FD_SETSIZE)
+ return SOCKET_TOO_LARGE_FOR_SELECT;
+#endif
+
+ /* Construct the arguments to select */
+ tv.tv_sec = (int)s->sock_timeout;
+ tv.tv_usec = (int)((s->sock_timeout - tv.tv_sec) * 1e6);
+ FD_ZERO(&fds);
+ FD_SET(s->sock_fd, &fds);
+
+ /* See if the socket is ready */
+ PySSL_BEGIN_ALLOW_THREADS
+ if (writing)
+ rc = select(s->sock_fd+1, NULL, &fds, NULL, &tv);
+ else
+ rc = select(s->sock_fd+1, &fds, NULL, NULL, &tv);
+ PySSL_END_ALLOW_THREADS
+
+#ifdef HAVE_POLL
+normal_return:
+#endif
+ /* Return SOCKET_TIMED_OUT on timeout, SOCKET_OPERATION_OK otherwise
+ (when we are able to write or when there's something to read) */
+ return rc == 0 ? SOCKET_HAS_TIMED_OUT : SOCKET_OPERATION_OK;
+}
+
+static PyObject *PySSL_SSLwrite(PySSLObject *self, PyObject *args)
+{
+ Py_buffer buf;
+ int len;
+ int sockstate;
+ int err;
+ int nonblocking;
+
+ if (!PyArg_ParseTuple(args, "s*:write", &buf))
+ return NULL;
+
+ /* just in case the blocking state of the socket has been changed */
+ nonblocking = (self->Socket->sock_timeout >= 0.0);
+ BIO_set_nbio(SSL_get_rbio(self->ssl), nonblocking);
+ BIO_set_nbio(SSL_get_wbio(self->ssl), nonblocking);
+
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 1);
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ PyErr_SetString(PySSLErrorObject,
+ "The write operation timed out");
+ goto error;
+ } else if (sockstate == SOCKET_HAS_BEEN_CLOSED) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket has been closed.");
+ goto error;
+ } else if (sockstate == SOCKET_TOO_LARGE_FOR_SELECT) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket too large for select().");
+ goto error;
+ }
+ do {
+ PySSL_BEGIN_ALLOW_THREADS
+ len = SSL_write(self->ssl, buf.buf, buf.len);
+ err = SSL_get_error(self->ssl, len);
+ PySSL_END_ALLOW_THREADS
+ if (PyErr_CheckSignals()) {
+ goto error;
+ }
+ if (err == SSL_ERROR_WANT_READ) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 0);
+ } else if (err == SSL_ERROR_WANT_WRITE) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 1);
+ } else {
+ sockstate = SOCKET_OPERATION_OK;
+ }
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ PyErr_SetString(PySSLErrorObject,
+ "The write operation timed out");
+ goto error;
+ } else if (sockstate == SOCKET_HAS_BEEN_CLOSED) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket has been closed.");
+ goto error;
+ } else if (sockstate == SOCKET_IS_NONBLOCKING) {
+ break;
+ }
+ } while (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE);
+
+ PyBuffer_Release(&buf);
+ if (len > 0)
+ return PyInt_FromLong(len);
+ else
+ return PySSL_SetError(self, len, __FILE__, __LINE__);
+
+error:
+ PyBuffer_Release(&buf);
+ return NULL;
+}
+
+PyDoc_STRVAR(PySSL_SSLwrite_doc,
+"write(s) -> len\n\
+\n\
+Writes the string s into the SSL object. Returns the number\n\
+of bytes written.");
+
+static PyObject *PySSL_SSLpending(PySSLObject *self)
+{
+ int count = 0;
+
+ PySSL_BEGIN_ALLOW_THREADS
+ count = SSL_pending(self->ssl);
+ PySSL_END_ALLOW_THREADS
+ if (count < 0)
+ return PySSL_SetError(self, count, __FILE__, __LINE__);
+ else
+ return PyInt_FromLong(count);
+}
+
+PyDoc_STRVAR(PySSL_SSLpending_doc,
+"pending() -> count\n\
+\n\
+Returns the number of already decrypted bytes available for read,\n\
+pending on the connection.\n");
+
+static PyObject *PySSL_SSLread(PySSLObject *self, PyObject *args)
+{
+ PyObject *buf;
+ int count = 0;
+ int len = 1024;
+ int sockstate;
+ int err;
+ int nonblocking;
+
+ if (!PyArg_ParseTuple(args, "|i:read", &len))
+ return NULL;
+
+ if (!(buf = PyString_FromStringAndSize((char *) 0, len)))
+ return NULL;
+
+ /* just in case the blocking state of the socket has been changed */
+ nonblocking = (self->Socket->sock_timeout >= 0.0);
+ BIO_set_nbio(SSL_get_rbio(self->ssl), nonblocking);
+ BIO_set_nbio(SSL_get_wbio(self->ssl), nonblocking);
+
+ /* first check if there are bytes ready to be read */
+ PySSL_BEGIN_ALLOW_THREADS
+ count = SSL_pending(self->ssl);
+ PySSL_END_ALLOW_THREADS
+
+ if (!count) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 0);
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ PyErr_SetString(PySSLErrorObject,
+ "The read operation timed out");
+ Py_DECREF(buf);
+ return NULL;
+ } else if (sockstate == SOCKET_TOO_LARGE_FOR_SELECT) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket too large for select().");
+ Py_DECREF(buf);
+ return NULL;
+ } else if (sockstate == SOCKET_HAS_BEEN_CLOSED) {
+ if (SSL_get_shutdown(self->ssl) !=
+ SSL_RECEIVED_SHUTDOWN)
+ {
+ Py_DECREF(buf);
+ PyErr_SetString(PySSLErrorObject,
+ "Socket closed without SSL shutdown handshake");
+ return NULL;
+ } else {
+ /* should contain a zero-length string */
+ _PyString_Resize(&buf, 0);
+ return buf;
+ }
+ }
+ }
+ do {
+ PySSL_BEGIN_ALLOW_THREADS
+ count = SSL_read(self->ssl, PyString_AsString(buf), len);
+ err = SSL_get_error(self->ssl, count);
+ PySSL_END_ALLOW_THREADS
+ if(PyErr_CheckSignals()) {
+ Py_DECREF(buf);
+ return NULL;
+ }
+ if (err == SSL_ERROR_WANT_READ) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 0);
+ } else if (err == SSL_ERROR_WANT_WRITE) {
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 1);
+ } else if ((err == SSL_ERROR_ZERO_RETURN) &&
+ (SSL_get_shutdown(self->ssl) ==
+ SSL_RECEIVED_SHUTDOWN))
+ {
+ _PyString_Resize(&buf, 0);
+ return buf;
+ } else {
+ sockstate = SOCKET_OPERATION_OK;
+ }
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ PyErr_SetString(PySSLErrorObject,
+ "The read operation timed out");
+ Py_DECREF(buf);
+ return NULL;
+ } else if (sockstate == SOCKET_IS_NONBLOCKING) {
+ break;
+ }
+ } while (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_WANT_WRITE);
+ if (count <= 0) {
+ Py_DECREF(buf);
+ return PySSL_SetError(self, count, __FILE__, __LINE__);
+ }
+ if (count != len)
+ _PyString_Resize(&buf, count);
+ return buf;
+}
+
+PyDoc_STRVAR(PySSL_SSLread_doc,
+"read([len]) -> string\n\
+\n\
+Read up to len bytes from the SSL socket.");
+
+static PyObject *PySSL_SSLshutdown(PySSLObject *self)
+{
+ int err, ssl_err, sockstate, nonblocking;
+ int zeros = 0;
+
+ /* Guard against closed socket */
+ if (self->Socket->sock_fd < 0) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket has been closed.");
+ return NULL;
+ }
+
+ /* Just in case the blocking state of the socket has been changed */
+ nonblocking = (self->Socket->sock_timeout >= 0.0);
+ BIO_set_nbio(SSL_get_rbio(self->ssl), nonblocking);
+ BIO_set_nbio(SSL_get_wbio(self->ssl), nonblocking);
+
+ while (1) {
+ PySSL_BEGIN_ALLOW_THREADS
+ /* Disable read-ahead so that unwrap can work correctly.
+ * Otherwise OpenSSL might read in too much data,
+ * eating clear text data that happens to be
+ * transmitted after the SSL shutdown.
+ * Should be safe to call repeatedly everytime this
+ * function is used and the shutdown_seen_zero != 0
+ * condition is met.
+ */
+ if (self->shutdown_seen_zero)
+ SSL_set_read_ahead(self->ssl, 0);
+ err = SSL_shutdown(self->ssl);
+ PySSL_END_ALLOW_THREADS
+ /* If err == 1, a secure shutdown with SSL_shutdown() is complete */
+ if (err > 0)
+ break;
+ if (err == 0) {
+ /* Don't loop endlessly; instead preserve legacy
+ behaviour of trying SSL_shutdown() only twice.
+ This looks necessary for OpenSSL < 0.9.8m */
+ if (++zeros > 1)
+ break;
+ /* Shutdown was sent, now try receiving */
+ self->shutdown_seen_zero = 1;
+ continue;
+ }
+
+ /* Possibly retry shutdown until timeout or failure */
+ ssl_err = SSL_get_error(self->ssl, err);
+ if (ssl_err == SSL_ERROR_WANT_READ)
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 0);
+ else if (ssl_err == SSL_ERROR_WANT_WRITE)
+ sockstate = check_socket_and_wait_for_timeout(self->Socket, 1);
+ else
+ break;
+ if (sockstate == SOCKET_HAS_TIMED_OUT) {
+ if (ssl_err == SSL_ERROR_WANT_READ)
+ PyErr_SetString(PySSLErrorObject,
+ "The read operation timed out");
+ else
+ PyErr_SetString(PySSLErrorObject,
+ "The write operation timed out");
+ return NULL;
+ }
+ else if (sockstate == SOCKET_TOO_LARGE_FOR_SELECT) {
+ PyErr_SetString(PySSLErrorObject,
+ "Underlying socket too large for select().");
+ return NULL;
+ }
+ else if (sockstate != SOCKET_OPERATION_OK)
+ /* Retain the SSL error code */
+ break;
+ }
+
+ if (err < 0)
+ return PySSL_SetError(self, err, __FILE__, __LINE__);
+ else {
+ Py_INCREF(self->Socket);
+ return (PyObject *) (self->Socket);
+ }
+}
+
+PyDoc_STRVAR(PySSL_SSLshutdown_doc,
+"shutdown(s) -> socket\n\
+\n\
+Does the SSL shutdown handshake with the remote end, and returns\n\
+the underlying socket object.");
+
+static PyMethodDef PySSLMethods[] = {
+ {"do_handshake", (PyCFunction)PySSL_SSLdo_handshake, METH_NOARGS},
+ {"write", (PyCFunction)PySSL_SSLwrite, METH_VARARGS,
+ PySSL_SSLwrite_doc},
+ {"read", (PyCFunction)PySSL_SSLread, METH_VARARGS,
+ PySSL_SSLread_doc},
+ {"pending", (PyCFunction)PySSL_SSLpending, METH_NOARGS,
+ PySSL_SSLpending_doc},
+ {"server", (PyCFunction)PySSL_server, METH_NOARGS},
+ {"issuer", (PyCFunction)PySSL_issuer, METH_NOARGS},
+ {"peer_certificate", (PyCFunction)PySSL_peercert, METH_VARARGS,
+ PySSL_peercert_doc},
+ {"cipher", (PyCFunction)PySSL_cipher, METH_NOARGS},
+ {"shutdown", (PyCFunction)PySSL_SSLshutdown, METH_NOARGS,
+ PySSL_SSLshutdown_doc},
+ {NULL, NULL}
+};
+
+static PyObject *PySSL_getattr(PySSLObject *self, char *name)
+{
+ return Py_FindMethod(PySSLMethods, (PyObject *)self, name);
+}
+
+static PyTypeObject PySSL_Type = {
+ PyVarObject_HEAD_INIT(NULL, 0)
+ "ssl.SSLContext", /*tp_name*/
+ sizeof(PySSLObject), /*tp_basicsize*/
+ 0, /*tp_itemsize*/
+ /* methods */
+ (destructor)PySSL_dealloc, /*tp_dealloc*/
+ 0, /*tp_print*/
+ (getattrfunc)PySSL_getattr, /*tp_getattr*/
+ 0, /*tp_setattr*/
+ 0, /*tp_compare*/
+ 0, /*tp_repr*/
+ 0, /*tp_as_number*/
+ 0, /*tp_as_sequence*/
+ 0, /*tp_as_mapping*/
+ 0, /*tp_hash*/
+};
+
+#ifdef HAVE_OPENSSL_RAND
+
+/* helper routines for seeding the SSL PRNG */
+static PyObject *
+PySSL_RAND_add(PyObject *self, PyObject *args)
+{
+ char *buf;
+ int len;
+ double entropy;
+
+ if (!PyArg_ParseTuple(args, "s#d:RAND_add", &buf, &len, &entropy))
+ return NULL;
+ RAND_add(buf, len, entropy);
+ Py_INCREF(Py_None);
+ return Py_None;
+}
+
+PyDoc_STRVAR(PySSL_RAND_add_doc,
+"RAND_add(string, entropy)\n\
+\n\
+Mix string into the OpenSSL PRNG state. entropy (a float) is a lower\n\
+bound on the entropy contained in string. See RFC 1750.");
+
+static PyObject *
+PySSL_RAND_status(PyObject *self)
+{
+ return PyInt_FromLong(RAND_status());
+}
+
+PyDoc_STRVAR(PySSL_RAND_status_doc,
+"RAND_status() -> 0 or 1\n\
+\n\
+Returns 1 if the OpenSSL PRNG has been seeded with enough data and 0 if not.\n\
+It is necessary to seed the PRNG with RAND_add() on some platforms before\n\
+using the ssl() function.");
+
+static PyObject *
+PySSL_RAND_egd(PyObject *self, PyObject *arg)
+{
+ int bytes;
+
+ if (!PyString_Check(arg))
+ return PyErr_Format(PyExc_TypeError,
+ "RAND_egd() expected string, found %s",
+ Py_TYPE(arg)->tp_name);
+ bytes = RAND_egd(PyString_AS_STRING(arg));
+ if (bytes == -1) {
+ PyErr_SetString(PySSLErrorObject,
+ "EGD connection failed or EGD did not return "
+ "enough data to seed the PRNG");
+ return NULL;
+ }
+ return PyInt_FromLong(bytes);
+}
+
+PyDoc_STRVAR(PySSL_RAND_egd_doc,
+"RAND_egd(path) -> bytes\n\
+\n\
+Queries the entropy gather daemon (EGD) on the socket named by 'path'.\n\
+Returns number of bytes read. Raises SSLError if connection to EGD\n\
+fails or if it does provide enough data to seed PRNG.");
+
+#endif
+
+/* List of functions exported by this module. */
+
+static PyMethodDef PySSL_methods[] = {
+ {"sslwrap", PySSL_sslwrap,
+ METH_VARARGS, ssl_doc},
+ {"_test_decode_cert", PySSL_test_decode_certificate,
+ METH_VARARGS},
+#ifdef HAVE_OPENSSL_RAND
+ {"RAND_add", PySSL_RAND_add, METH_VARARGS,
+ PySSL_RAND_add_doc},
+ {"RAND_egd", PySSL_RAND_egd, METH_O,
+ PySSL_RAND_egd_doc},
+ {"RAND_status", (PyCFunction)PySSL_RAND_status, METH_NOARGS,
+ PySSL_RAND_status_doc},
+#endif
+ {NULL, NULL} /* Sentinel */
+};
+
+
+#ifdef WITH_THREAD
+
+/* an implementation of OpenSSL threading operations in terms
+ of the Python C thread library */
+
+static PyThread_type_lock *_ssl_locks = NULL;
+
+static unsigned long _ssl_thread_id_function (void) {
+ return PyThread_get_thread_ident();
+}
+
+static void _ssl_thread_locking_function (int mode, int n, const char *file, int line) {
+ /* this function is needed to perform locking on shared data
+ structures. (Note that OpenSSL uses a number of global data
+ structures that will be implicitly shared whenever multiple threads
+ use OpenSSL.) Multi-threaded applications will crash at random if
+ it is not set.
+
+ locking_function() must be able to handle up to CRYPTO_num_locks()
+ different mutex locks. It sets the n-th lock if mode & CRYPTO_LOCK, and
+ releases it otherwise.
+
+ file and line are the file number of the function setting the
+ lock. They can be useful for debugging.
+ */
+
+ if ((_ssl_locks == NULL) ||
+ (n < 0) || ((unsigned)n >= _ssl_locks_count))
+ return;
+
+ if (mode & CRYPTO_LOCK) {
+ PyThread_acquire_lock(_ssl_locks[n], 1);
+ } else {
+ PyThread_release_lock(_ssl_locks[n]);
+ }
+}
+
+static int _setup_ssl_threads(void) {
+
+ unsigned int i;
+
+ if (_ssl_locks == NULL) {
+ _ssl_locks_count = CRYPTO_num_locks();
+ _ssl_locks = (PyThread_type_lock *)
+ malloc(sizeof(PyThread_type_lock) * _ssl_locks_count);
+ if (_ssl_locks == NULL)
+ return 0;
+ memset(_ssl_locks, 0, sizeof(PyThread_type_lock) * _ssl_locks_count);
+ for (i = 0; i < _ssl_locks_count; i++) {
+ _ssl_locks[i] = PyThread_allocate_lock();
+ if (_ssl_locks[i] == NULL) {
+ unsigned int j;
+ for (j = 0; j < i; j++) {
+ PyThread_free_lock(_ssl_locks[j]);
+ }
+ free(_ssl_locks);
+ return 0;
+ }
+ }
+ CRYPTO_set_locking_callback(_ssl_thread_locking_function);
+ CRYPTO_set_id_callback(_ssl_thread_id_function);
+ }
+ return 1;
+}
+
+#endif /* def HAVE_THREAD */
+
+PyDoc_STRVAR(module_doc,
+"Implementation module for SSL socket operations. See the socket module\n\
+for documentation.");
+
+PyMODINIT_FUNC
+init_ssl(void)
+{
+ PyObject *m, *d, *r;
+ unsigned long libver;
+ unsigned int major, minor, fix, patch, status;
+
+ Py_TYPE(&PySSL_Type) = &PyType_Type;
+
+ m = Py_InitModule3("_ssl", PySSL_methods, module_doc);
+ if (m == NULL)
+ return;
+ d = PyModule_GetDict(m);
+
+ /* Load _socket module and its C API */
+ if (PySocketModule_ImportModuleAndAPI())
+ return;
+
+ /* Init OpenSSL */
+ SSL_load_error_strings();
+ SSL_library_init();
+#ifdef WITH_THREAD
+ /* note that this will start threading if not already started */
+ if (!_setup_ssl_threads()) {
+ return;
+ }
+#endif
+ OpenSSL_add_all_algorithms();
+
+ /* Add symbols to module dict */
+ PySSLErrorObject = PyErr_NewException("ssl.SSLError",
+ PySocketModule.error,
+ NULL);
+ if (PySSLErrorObject == NULL)
+ return;
+ if (PyDict_SetItemString(d, "SSLError", PySSLErrorObject) != 0)
+ return;
+ if (PyDict_SetItemString(d, "SSLType",
+ (PyObject *)&PySSL_Type) != 0)
+ return;
+ PyModule_AddIntConstant(m, "SSL_ERROR_ZERO_RETURN",
+ PY_SSL_ERROR_ZERO_RETURN);
+ PyModule_AddIntConstant(m, "SSL_ERROR_WANT_READ",
+ PY_SSL_ERROR_WANT_READ);
+ PyModule_AddIntConstant(m, "SSL_ERROR_WANT_WRITE",
+ PY_SSL_ERROR_WANT_WRITE);
+ PyModule_AddIntConstant(m, "SSL_ERROR_WANT_X509_LOOKUP",
+ PY_SSL_ERROR_WANT_X509_LOOKUP);
+ PyModule_AddIntConstant(m, "SSL_ERROR_SYSCALL",
+ PY_SSL_ERROR_SYSCALL);
+ PyModule_AddIntConstant(m, "SSL_ERROR_SSL",
+ PY_SSL_ERROR_SSL);
+ PyModule_AddIntConstant(m, "SSL_ERROR_WANT_CONNECT",
+ PY_SSL_ERROR_WANT_CONNECT);
+ /* non ssl.h errorcodes */
+ PyModule_AddIntConstant(m, "SSL_ERROR_EOF",
+ PY_SSL_ERROR_EOF);
+ PyModule_AddIntConstant(m, "SSL_ERROR_INVALID_ERROR_CODE",
+ PY_SSL_ERROR_INVALID_ERROR_CODE);
+ /* cert requirements */
+ PyModule_AddIntConstant(m, "CERT_NONE",
+ PY_SSL_CERT_NONE);
+ PyModule_AddIntConstant(m, "CERT_OPTIONAL",
+ PY_SSL_CERT_OPTIONAL);
+ PyModule_AddIntConstant(m, "CERT_REQUIRED",
+ PY_SSL_CERT_REQUIRED);
+
+ /* protocol versions */
+#ifndef OPENSSL_NO_SSL2
+ PyModule_AddIntConstant(m, "PROTOCOL_SSLv2",
+ PY_SSL_VERSION_SSL2);
+#endif
+ PyModule_AddIntConstant(m, "PROTOCOL_SSLv3",
+ PY_SSL_VERSION_SSL3);
+ PyModule_AddIntConstant(m, "PROTOCOL_SSLv23",
+ PY_SSL_VERSION_SSL23);
+ PyModule_AddIntConstant(m, "PROTOCOL_TLSv1",
+ PY_SSL_VERSION_TLS1);
+
+ /* OpenSSL version */
+ /* SSLeay() gives us the version of the library linked against,
+ which could be different from the headers version.
+ */
+ libver = SSLeay();
+ r = PyLong_FromUnsignedLong(libver);
+ if (r == NULL)
+ return;
+ if (PyModule_AddObject(m, "OPENSSL_VERSION_NUMBER", r))
+ return;
+ status = libver & 0xF;
+ libver >>= 4;
+ patch = libver & 0xFF;
+ libver >>= 8;
+ fix = libver & 0xFF;
+ libver >>= 8;
+ minor = libver & 0xFF;
+ libver >>= 8;
+ major = libver & 0xFF;
+ r = Py_BuildValue("IIIII", major, minor, fix, patch, status);
+ if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION_INFO", r))
+ return;
+ r = PyString_FromString(SSLeay_version(SSLEAY_VERSION));
+ if (r == NULL || PyModule_AddObject(m, "OPENSSL_VERSION", r))
+ return;
+}
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