/* Coverity Scan model
 *
 * This is a modeling file for Coverity Scan. Modeling helps to avoid false
 * positives.
 *
 * - A model file can't import any header files.
 * - Therefore only some built-in primitives like int, char and void are
 * available but not wchar_t, NULL etc.
 * - Modeling doesn't need full structs and typedefs. Rudimentary structs
 * and similar types are sufficient.
 * - An uninitialized local pointer is not an error. It signifies that the
 * variable could be either NULL or have some data.
 *
 * Coverity Scan doesn't pick up modifications automatically. The model file
 * must be uploaded by an admin in the analysis settings of
 * http://scan.coverity.com/projects/200
 */

/* dummy definitions, in most cases struct fields aren't required. */

#define NULL (void *)0
#define assert(op) /* empty */
typedef int sdigit;
typedef long Py_ssize_t;
typedef unsigned short wchar_t;
typedef struct {} PyObject;
typedef struct {} grammar;
typedef struct {} DIR;
typedef struct {} RFILE;

/* Python/pythonrun.c
 * resource leak false positive */

void Py_FatalError(const char *msg) {
 __coverity_panic__();
}

/* Objects/longobject.c
 * NEGATIVE_RETURNS false positive */

static PyObject *get_small_int(sdigit ival)
{
 /* Never returns NULL */
 PyObject *p;
 assert(p != NULL);
 return p;
}

PyObject *PyLong_FromLong(long ival)
{
 PyObject *p;
 int maybe;

 if ((ival >= -5) && (ival < 257 + 5)) {
 p = get_small_int(ival);
 assert(p != NULL);
 return p;
 }
 if (maybe)
 return p;
 else
 return NULL;
}

PyObject *PyLong_FromLongLong(long long ival)
{
 return PyLong_FromLong((long)ival);
}

PyObject *PyLong_FromSsize_t(Py_ssize_t ival)
{
 return PyLong_FromLong((long)ival);
}

/* tainted sinks
 *
 * Coverity considers argv, environ, read() data etc as tained.
 */

PyObject *PyErr_SetFromErrnoWithFilename(PyObject *exc, const char *filename)
{
 __coverity_tainted_data_sink__(filename);
 return NULL;
}

/* Python/fileutils.c */
wchar_t *Py_DecodeLocale(const char* arg, size_t *size)
{
 wchar_t *w;
 __coverity_tainted_data_sink__(arg);
 __coverity_tainted_data_sink__(size);
 return w;
}

/* Parser/pgenmain.c */
grammar *getgrammar(const char *filename)
{
 grammar *g;
 __coverity_tainted_data_sink__(filename);
 return g;
}

/* Python/marshal.c */

static Py_ssize_t r_string(char *s, Py_ssize_t n, RFILE *p)
{
 __coverity_tainted_string_argument__(s);
 return 0;
}

static long r_long(RFILE *p)
{
 long l;
 unsigned char buffer[4];

 r_string((char *)buffer, 4, p);
 __coverity_tainted_string_sanitize_content__(buffer);
 l = (long)buffer;
 return l;
}

/* Coverity doesn't understand that fdopendir() may take ownership of fd. */

DIR *fdopendir(int fd)
{
 DIR *d;
 if (d) {
 __coverity_close__(fd);
 }
 return d;
}

/* Modules/_datetime.c
 *
 * Coverity thinks that the input values for these function come from a
 * tainted source PyDateTime_DATE_GET_* macros use bit shifting.
 */
static PyObject *
build_struct_time(int y, int m, int d, int hh, int mm, int ss, int dstflag)
{
 PyObject *result;

 __coverity_tainted_data_sanitize__(y);
 __coverity_tainted_data_sanitize__(m);
 __coverity_tainted_data_sanitize__(d);
 __coverity_tainted_data_sanitize__(hh);
 __coverity_tainted_data_sanitize__(mm);
 __coverity_tainted_data_sanitize__(ss);
 __coverity_tainted_data_sanitize__(dstflag);

 return result;
}

static int
ymd_to_ord(int year, int month, int day)
{
 int ord = 0;

 __coverity_tainted_data_sanitize__(year);
 __coverity_tainted_data_sanitize__(month);
 __coverity_tainted_data_sanitize__(day);

 return ord;
}

static int
normalize_date(int *year, int *month, int *day)
{
 __coverity_tainted_data_sanitize__(*year);
 __coverity_tainted_data_sanitize__(*month);
 __coverity_tainted_data_sanitize__(*day);

 return 0;
}

static int
weekday(int year, int month, int day)
{
 int w = 0;

 __coverity_tainted_data_sanitize__(year);
 __coverity_tainted_data_sanitize__(month);
 __coverity_tainted_data_sanitize__(day);

 return w;
}