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      1 /* cryptmodule.c - by Steve Majewski
      2  */
      3 
      4 #include "Python.h"
      5 
      6 #include <sys/types.h>
      7 
      8 /* Module crypt */
      9 
     10 /*[clinic input]
     11 module crypt
     12 [clinic start generated code]*/
     13 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=c6252cf4f2f2ae81]*/
     14 
     15 #include "clinic/_cryptmodule.c.h"
     16 
     17 /*[clinic input]
     18 crypt.crypt
     19 
     20     word: str
     21     salt: str
     22     /
     23 
     24 Hash a *word* with the given *salt* and return the hashed password.
     25 
     26 *word* will usually be a user's password.  *salt* (either a random 2 or 16
     27 character string, possibly prefixed with $digit$ to indicate the method)
     28 will be used to perturb the encryption algorithm and produce distinct
     29 results for a given *word*.
     30 
     31 [clinic start generated code]*/
     32 
     33 static PyObject *
     34 crypt_crypt_impl(PyObject *module, const char *word, const char *salt)
     35 /*[clinic end generated code: output=0512284a03d2803c input=0e8edec9c364352b]*/
     36 {
     37     char *crypt_result;
     38 #ifdef HAVE_CRYPT_R
     39     struct crypt_data data;
     40     memset(&data, 0, sizeof(data));
     41     crypt_result = crypt_r(word, salt, &data);
     42 #else
     43     crypt_result = crypt(word, salt);
     44 #endif
     45     return Py_BuildValue("s", crypt_result);
     46 }
     47 
     48 
     49 static PyMethodDef crypt_methods[] = {
     50     CRYPT_CRYPT_METHODDEF
     51     {NULL,              NULL}           /* sentinel */
     52 };
     53 
     54 
     55 static struct PyModuleDef cryptmodule = {
     56     PyModuleDef_HEAD_INIT,
     57     "_crypt",
     58     NULL,
     59     -1,
     60     crypt_methods,
     61     NULL,
     62     NULL,
     63     NULL,
     64     NULL
     65 };
     66 
     67 PyMODINIT_FUNC
     68 PyInit__crypt(void)
     69 {
     70     return PyModule_Create(&cryptmodule);
     71 }
     72