*.c: Make all of the type-definition tables read-only.

[catacomb-python] / share.c

diff --git a/share.c b/share.c
index ad56d31..16d376e 100644 (file)
--- a/share.c
+++ b/share.c
@@ -53,7 +53,7 @@ static PyObject *gfsget_threshold(PyObject *me, void *hunoz)
 static PyObject *gfsget_size(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(GFSHARE_S(me)->sz)); }
 
-static PyGetSetDef gfshare_pygetset[]= {
+static const PyGetSetDef gfshare_pygetset[]= {
 #define GETSETNAME(op, name) gfs##op##_##name
   GET  (threshold,     "S.threshold -> THRESHOLD")
   GET  (size,          "S.size -> SECRETSZ")
@@ -86,7 +86,7 @@ static PyTypeObject gfshare_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary-field secret sharing base class.",
+  "Binary-field secret sharing base class.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -96,7 +96,7 @@ static PyTypeObject gfshare_pytype_skel = {
   0,                                   /* @tp_iternext@ */
   0,                                   /* @tp_methods@ */
   0,                                   /* @tp_members@ */
-  gfshare_pygetset,                    /* @tp_getset@ */
+  PYGETSET(gfshare),                   /* @tp_getset@ */
   0,                                   /* @tp_base@ */
   0,                                   /* @tp_dict@ */
   0,                                   /* @tp_descr_get@ */
@@ -113,12 +113,12 @@ static PyObject *gfsharesplit_pynew(PyTypeObject *ty,
                                    PyObject *arg, PyObject *kw)
 {
   char *p;
-  int n;
+  Py_ssize_t n;
   unsigned t;
   grand *r = &rand_global;
   gfshare_pyobj *s;
-  char *kwlist[] = { "threshold", "secret", "rng", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&s#|O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "secret", "rng", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&s#|O&:new", KWLIST,
                                   convuint, &t, &p, &n, convgrand, &r))
     goto end;
   if (!t || t > 255) VALERR("threshold must be nonzero and < 256");
@@ -142,7 +142,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef gfsharesplit_pymethods[] = {
+static const PyMethodDef gfsharesplit_pymethods[] = {
 #define METHNAME(name) gfsmeth_##name
   METH (get,           "S.get(I) -> SHARE")
 #undef METHNAME
@@ -174,7 +174,8 @@ static PyTypeObject gfsharesplit_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary field secret sharing: split secret into shares.",
+  "GFShareSplit(THRESHOLD, SECRET, [rng = rand]): binary-field sharing:\n"
+  "   split secret into shares.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -182,7 +183,7 @@ static PyTypeObject gfsharesplit_pytype_skel = {
   0,                                   /* @tp_weaklistoffset@ */
   0,                                   /* @tp_iter@ */
   0,                                   /* @tp_iternext@ */
-  gfsharesplit_pymethods,              /* @tp_methods@ */
+  PYMETHODS(gfsharesplit),             /* @tp_methods@ */
   0,                                   /* @tp_members@ */
   0,                                   /* @tp_getset@ */
   0,                                   /* @tp_base@ */
@@ -202,8 +203,8 @@ static PyObject *gfsharejoin_pynew(PyTypeObject *ty,
 {
   unsigned t, sz;
   gfshare_pyobj *s;
-  char *kwlist[] = { "threshold", "size", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "size", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", KWLIST,
                                   convuint, &t, convuint, &sz))
     goto end;
   if (!t || t > 255) VALERR("threshold must be nonzero and < 256");
@@ -228,7 +229,7 @@ static PyObject *gfsmeth_add(PyObject *me, PyObject *arg)
 {
   unsigned i;
   char *p;
-  int n;
+  Py_ssize_t n;
   if (!PyArg_ParseTuple(arg, "O&s#:add", convuint, &i, &p, &n)) goto end;
   if (i > 254) VALERR("index must be < 255");
   if (n != GFSHARE_S(me)->sz) VALERR("bad share size");
@@ -251,7 +252,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef gfsharejoin_pymethods[] = {
+static const PyMethodDef gfsharejoin_pymethods[] = {
 #define METHNAME(name) gfsmeth_##name
   METH (addedp,        "S.addedp(I) -> BOOL")
   METH (add,           "S.add(I, SHARE) -> REMAIN")
@@ -263,7 +264,7 @@ static PyMethodDef gfsharejoin_pymethods[] = {
 static PyObject *gfsget_remain(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(GFSHARE_S(me)->t - GFSHARE_S(me)->i)); }
 
-static PyGetSetDef gfsharejoin_pygetset[]= {
+static const PyGetSetDef gfsharejoin_pygetset[]= {
 #define GETSETNAME(op, name) gfs##op##_##name
   GET  (remain,        "S.remain -> REMAIN")
 #undef GETSETNAME
@@ -295,7 +296,8 @@ static PyTypeObject gfsharejoin_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Binary field secret sharing: join shares to recover secret.",
+  "GFShareJoin(THRESHOLD, SIZE): binary field sharing:\n"
+  "  join shares to recover secret.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -303,9 +305,9 @@ static PyTypeObject gfsharejoin_pytype_skel = {
   0,                                   /* @tp_weaklistoffset@ */
   0,                                   /* @tp_iter@ */
   0,                                   /* @tp_iternext@ */
-  gfsharejoin_pymethods,               /* @tp_methods@ */
+  PYMETHODS(gfsharejoin),              /* @tp_methods@ */
   0,                                   /* @tp_members@ */
-  gfsharejoin_pygetset,                        /* @tp_getset@ */
+  PYGETSET(gfsharejoin),               /* @tp_getset@ */
   0,                                   /* @tp_base@ */
   0,                                   /* @tp_dict@ */
   0,                                   /* @tp_descr_get@ */
@@ -343,7 +345,7 @@ static PyObject *sget_threshold(PyObject *me, void *hunoz)
 static PyObject *sget_modulus(PyObject *me, void *hunoz)
   { return (mp_pywrap(SHARE_S(me)->p)); }
 
-static PyGetSetDef share_pygetset[]= {
+static const PyGetSetDef share_pygetset[]= {
 #define GETSETNAME(op, name) s##op##_##name
   GET  (threshold,     "S.threshold -> THRESHOLD")
   GET  (modulus,       "S.modulus -> MODULUS")
@@ -376,7 +378,7 @@ static PyTypeObject share_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime-field secret sharing base class.",
+  "Prime-field secret sharing base class.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -386,7 +388,7 @@ static PyTypeObject share_pytype_skel = {
   0,                                   /* @tp_iternext@ */
   0,                                   /* @tp_methods@ */
   0,                                   /* @tp_members@ */
-  share_pygetset,                      /* @tp_getset@ */
+  PYGETSET(share),                     /* @tp_getset@ */
   0,                                   /* @tp_base@ */
   0,                                   /* @tp_dict@ */
   0,                                   /* @tp_descr_get@ */
@@ -407,8 +409,10 @@ static PyObject *sharesplit_pynew(PyTypeObject *ty,
   grand *r = &rand_global;
   mp *m = 0;
   share_pyobj *s;
-  char *kwlist[] = { "threshold", "secret", "modulus", "rng", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", kwlist,
+  static const char *const kwlist[] =
+    { "threshold", "secret", "modulus", "rng", 0 };
+
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&|O&O&:new", KWLIST,
                                   convuint, &t, convmp, &sec,
                                   convmp, &m, convgrand, &r))
     goto end;
@@ -435,7 +439,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef sharesplit_pymethods[] = {
+static const PyMethodDef sharesplit_pymethods[] = {
 #define METHNAME(name) smeth_##name
   METH (get,           "S.get(I) -> SHARE")
 #undef METHNAME
@@ -467,7 +471,8 @@ static PyTypeObject sharesplit_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime field secret sharing: split secret into shares.",
+  "ShareSplit(THRESHOLD, SECRET, [modulus = ?], [rng = rand]):\n"
+  "  prime field secret sharing: split secret into shares.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -475,7 +480,7 @@ static PyTypeObject sharesplit_pytype_skel = {
   0,                                   /* @tp_weaklistoffset@ */
   0,                                   /* @tp_iter@ */
   0,                                   /* @tp_iternext@ */
-  sharesplit_pymethods,                        /* @tp_methods@ */
+  PYMETHODS(sharesplit),               /* @tp_methods@ */
   0,                                   /* @tp_members@ */
   0,                                   /* @tp_getset@ */
   0,                                   /* @tp_base@ */
@@ -496,8 +501,8 @@ static PyObject *sharejoin_pynew(PyTypeObject *ty,
   unsigned t;
   mp *m = 0;
   share_pyobj *s;
-  char *kwlist[] = { "threshold", "modulus", 0 };
-  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", kwlist,
+  static const char *const kwlist[] = { "threshold", "modulus", 0 };
+  if (!PyArg_ParseTupleAndKeywords(arg, kw, "O&O&:new", KWLIST,
                                   convuint, &t, convmp, &m))
     goto end;
   if (!t) VALERR("threshold must be nonzero");
@@ -546,7 +551,7 @@ end:
   return (rc);
 }
 
-static PyMethodDef sharejoin_pymethods[] = {
+static const PyMethodDef sharejoin_pymethods[] = {
 #define METHNAME(name) smeth_##name
   METH (addedp,        "S.addedp(I) -> BOOL")
   METH (add,           "S.add(I, SHARE) -> REMAIN")
@@ -558,7 +563,7 @@ static PyMethodDef sharejoin_pymethods[] = {
 static PyObject *sget_remain(PyObject *me, void *hunoz)
   { return (PyInt_FromLong(SHARE_S(me)->t - SHARE_S(me)->i)); }
 
-static PyGetSetDef sharejoin_pygetset[]= {
+static const PyGetSetDef sharejoin_pygetset[]= {
 #define GETSETNAME(op, name) s##op##_##name
   GET  (remain,        "S.remain -> REMAIN")
 #undef GETSETNAME
@@ -590,7 +595,8 @@ static PyTypeObject sharejoin_pytype_skel = {
     Py_TPFLAGS_BASETYPE,
 
   /* @tp_doc@ */
-"Prime field secret sharing: join shares to recover secret.",
+  "ShareJoin(THRESHOLD, MODULUS): prime field secret sharing:\n"
+  "  join shares to recover secret.",
 
   0,                                   /* @tp_traverse@ */
   0,                                   /* @tp_clear@ */
@@ -598,9 +604,9 @@ static PyTypeObject sharejoin_pytype_skel = {
   0,                                   /* @tp_weaklistoffset@ */
   0,                                   /* @tp_iter@ */
   0,                                   /* @tp_iternext@ */
-  sharejoin_pymethods,                 /* @tp_methods@ */
+  PYMETHODS(sharejoin),                        /* @tp_methods@ */
   0,                                   /* @tp_members@ */
-  sharejoin_pygetset,                  /* @tp_getset@ */
+  PYGETSET(sharejoin),                 /* @tp_getset@ */
   0,                                   /* @tp_base@ */
   0,                                   /* @tp_dict@ */
   0,                                   /* @tp_descr_get@ */