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- /***********************************************************
- Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* MD5 module */
-
- /* This module provides an interface to the RSA Data Security,
- Inc. MD5 Message-Digest Algorithm, described in RFC 1321.
- It requires the files md5c.c and md5.h (which are slightly changed
- from the versions in the RFC to avoid the "global.h" file.) */
-
-
- /* MD5 objects */
-
- #include "Python.h"
- #include "md5.h"
-
- typedef struct {
- PyObject_HEAD
- MD5_CTX md5; /* the context holder */
- } md5object;
-
- staticforward PyTypeObject MD5type;
-
- #include "protos/md5module.h"
-
- #define is_md5object(v) ((v)->ob_type == &MD5type)
-
- static md5object *
- newmd5object()
- {
- md5object *md5p;
-
- md5p = PyObject_NEW(md5object, &MD5type);
- if (md5p == NULL)
- return NULL;
-
- MD5Init(&md5p->md5); /* actual initialisation */
- return md5p;
- }
-
-
- /* MD5 methods */
-
- static void
- md5_dealloc(md5p)
- md5object *md5p;
- {
- PyMem_DEL(md5p);
- }
-
-
- /* MD5 methods-as-attributes */
-
- static PyObject *
- md5_update(self, args)
- md5object *self;
- PyObject *args;
- {
- unsigned char *cp;
- int len;
-
- if (!PyArg_Parse(args, "s#", &cp, &len))
- return NULL;
-
- MD5Update(&self->md5, cp, len);
-
- Py_INCREF(Py_None);
- return Py_None;
- }
-
- static char update_doc [] =
- "update (arg)\n\
- \n\
- Update the md5 object with the string arg. Repeated calls are\n\
- equivalent to a single call with the concatenation of all the\n\
- arguments.";
-
-
- static PyObject *
- md5_digest(self, args)
- md5object *self;
- PyObject *args;
- {
-
- MD5_CTX mdContext;
- unsigned char aDigest[16];
-
- if (!PyArg_NoArgs(args))
- return NULL;
-
- /* make a temporary copy, and perform the final */
- mdContext = self->md5;
- MD5Final(aDigest, &mdContext);
-
- return PyString_FromStringAndSize((char *)aDigest, 16);
- }
-
- static char digest_doc [] =
- "digest() -> string\n\
- \n\
- Return the digest of the strings passed to the update() method so\n\
- far. This is an 16-byte string which may contain non-ASCII characters,\n\
- including null bytes.";
-
-
- static PyObject *
- md5_copy(self, args)
- md5object *self;
- PyObject *args;
- {
- md5object *md5p;
-
- if (!PyArg_NoArgs(args))
- return NULL;
-
- if ((md5p = newmd5object()) == NULL)
- return NULL;
-
- md5p->md5 = self->md5;
-
- return (PyObject *)md5p;
- }
-
- static char copy_doc [] =
- "copy() -> md5 object\n\
- \n\
- Return a copy (``clone'') of the md5 object.";
-
-
- static PyMethodDef md5_methods[] = {
- {"update", (PyCFunction)md5_update, 0, update_doc},
- {"digest", (PyCFunction)md5_digest, 0, digest_doc},
- {"copy", (PyCFunction)md5_copy, 0, copy_doc},
- {NULL, NULL} /* sentinel */
- };
-
- static PyObject *
- md5_getattr(self, name)
- md5object *self;
- char *name;
- {
- return Py_FindMethod(md5_methods, (PyObject *)self, name);
- }
-
- static char module_doc [] =
-
- "This module implements the interface to RSA's MD5 message digest\n\
- algorithm (see also Internet RFC 1321). Its use is quite\n\
- straightforward: use the new() to create an md5 object. You can now\n\
- feed this object with arbitrary strings using the update() method, and\n\
- at any point you can ask it for the digest (a strong kind of 128-bit\n\
- checksum, a.k.a. ``fingerprint'') of the contatenation of the strings\n\
- fed to it so far using the digest() method.\n\
- \n\
- Functions:\n\
- \n\
- new([arg]) -- return a new md5 object, initialized with arg if provided\n\
- md5([arg]) -- DEPRECATED, same as new, but for compatibility\n\
- \n\
- Special Objects:\n\
- \n\
- MD5Type -- type object for md5 objects\n\
- ";
-
- static char md5type_doc [] =
- "An md5 represents the object used to calculate the MD5 checksum of a\n\
- string of information.\n\
- \n\
- Methods:\n\
- \n\
- update() -- updates the current digest with an additional string\n\
- digest() -- return the current digest value\n\
- copy() -- return a copy of the current md5 object\n\
- ";
-
- statichere PyTypeObject MD5type = {
- PyObject_HEAD_INIT(&PyType_Type)
- 0, /*ob_size*/
- "md5", /*tp_name*/
- sizeof(md5object), /*tp_size*/
- 0, /*tp_itemsize*/
- /* methods */
- (destructor)md5_dealloc, /*tp_dealloc*/
- 0, /*tp_print*/
- (getattrfunc)md5_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*/
- 0, /*tp_call*/
- 0, /*tp_str*/
- 0, /*tp_getattro*/
- 0, /*tp_setattro*/
- 0, /*tp_as_buffer*/
- 0, /*tp_xxx4*/
- md5type_doc, /*tp_doc*/
- };
-
-
- /* MD5 functions */
-
- static PyObject *
- MD5_new(self, args)
- PyObject *self;
- PyObject *args;
- {
- md5object *md5p;
- unsigned char *cp = NULL;
- int len = 0;
-
- if (!PyArg_ParseTuple(args, "|s#", &cp, &len))
- return NULL;
-
- if ((md5p = newmd5object()) == NULL)
- return NULL;
-
- if (cp)
- MD5Update(&md5p->md5, cp, len);
-
- return (PyObject *)md5p;
- }
-
- static char new_doc [] =
- "new([arg]) -> md5 object\n\
- \n\
- Return a new md5 object. If arg is present, the method call update(arg)\n\
- is made.";
-
-
- /* List of functions exported by this module */
-
- static PyMethodDef md5_functions[] = {
- {"new", (PyCFunction)MD5_new, 1, new_doc},
- {"md5", (PyCFunction)MD5_new, 1, new_doc}, /* Backward compatibility */
- {NULL, NULL} /* Sentinel */
- };
-
-
- /* Initialize this module. */
-
- DL_EXPORT(void)
- initmd5()
- {
- PyObject *m, *d;
- m = Py_InitModule3("md5", md5_functions, module_doc);
- d = PyModule_GetDict(m);
- PyDict_SetItemString(d, "MD5Type", (PyObject *)&MD5type);
- /* No need to check the error here, the caller will do that */
- }
-