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/* hashstringlist.cc - Wrapper around apt-pkg's Hashes.
*
* Copyright 2015 Julian Andres Klode <jak@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <Python.h>
#include "generic.h"
#include "apt_pkgmodule.h"
#include <apt-pkg/hashes.h>
static PyObject *hashstringlist_new(PyTypeObject *type, PyObject *args,
PyObject *kwds)
{
return CppPyObject_NEW<HashStringList> (nullptr, type);
}
static int hashstringlist_init(PyObject *self, PyObject *args,
PyObject *kwds)
{
char *kwlist[] = { NULL };
if (PyArg_ParseTupleAndKeywords(args, kwds, "", kwlist) == 0)
return -1;
return 0;
}
static const char hashstringlist_find_doc[] =
"find(type: str = \"\") -> HashString\n\n"
"Find a hash of the given type, or the best one, if the argument\n"
"is empty or not specified.";
static PyObject *hashstringlist_find(PyObject *self, PyObject *args)
{
char *type = "";
if (PyArg_ParseTuple(args, "|s", &type) == 0)
return 0;
const HashString *hsf = GetCpp<HashStringList>(self).find(type);
if (hsf == nullptr)
return PyErr_Format(PyExc_KeyError, "Could not find hash type %s", type);
return HandleErrors(PyHashString_FromCpp(new HashString(*hsf), true, nullptr));
}
static const char hashstringlist_append_doc[] =
"append(object: HashString)\n\n"
"Append the given HashString to this list.";
static PyObject *hashstringlist_append(PyObject *self, PyObject *args)
{
PyObject *o;
if (PyArg_ParseTuple(args, "O!", &PyHashString_Type, &o) == 0)
return 0;
GetCpp<HashStringList>(self).push_back(*PyHashString_ToCpp(o));
Py_RETURN_NONE;
}
static const char hashstringlist_verify_file_doc[] =
"verify_file(filename: str) -> bool\n\n"
"Verify that the file with the given name matches all hashes in\n"
"the list.";
static PyObject *hashstringlist_verify_file(PyObject *self, PyObject *args)
{
PyApt_Filename filename;
if (PyArg_ParseTuple(args, "O&", PyApt_Filename::Converter, &filename) == 0)
return 0;
bool res = GetCpp<HashStringList>(self).VerifyFile(filename);
PyObject *PyRes = PyBool_FromLong(res);
return HandleErrors(PyRes);
}
static PyObject *hashstringlist_get_file_size(PyObject *self, void*) {
return MkPyNumber(GetCpp<HashStringList>(self).FileSize());
}
static PyObject *hashstringlist_get_usable(PyObject *self, void*) {
return PyBool_FromLong(GetCpp<HashStringList>(self).usable());
}
static int hashstringlist_set_file_size(PyObject *self, PyObject *value, void *) {
if (PyLong_Check(value)) {
if (PyLong_AsUnsignedLongLong(value) == (unsigned long long) -1) {
return 1;
}
GetCpp<HashStringList>(self).FileSize(PyLong_AsUnsignedLongLong(value));
} else if (PyInt_Check(value)) {
if (PyInt_AsLong(value) < 0) {
if (!PyErr_Occurred())
PyErr_SetString(PyExc_OverflowError,
"The file_size value must be positive");
return 1;
}
GetCpp<HashStringList>(self).FileSize(PyInt_AsLong(value));
} else {
PyErr_SetString(PyExc_TypeError,
"The file_size value must be an integer or long");
return 1;
}
return 0;
}
/* The same for groups */
static Py_ssize_t hashstringlist_len(PyObject *self)
{
return GetCpp <HashStringList>(self).size();
}
static PyObject *hashstringlist_getitem(PyObject *iSelf, Py_ssize_t index)
{
HashStringList &self = GetCpp<HashStringList>(iSelf);
if (index < 0 || (size_t) index >= self.size())
return PyErr_Format(PyExc_IndexError, "Out of range: %zd", index);
/* Copy over, safer than using a reference to the vector element */
HashString *hs = new HashString;
(*hs) = *(self.begin() + index);
return PyHashString_FromCpp(hs, true, nullptr);
}
static PySequenceMethods hashstringlist_seq_methods = {
hashstringlist_len,
0, // concat
0, // repeat
hashstringlist_getitem,
0, // slice
0, // assign item
0 // assign slice
};
static PyMethodDef hashstringlist_methods[] =
{
{"verify_file",hashstringlist_verify_file,METH_VARARGS,
hashstringlist_verify_file_doc},
{"find",hashstringlist_find,METH_VARARGS,
hashstringlist_find_doc},
{"append",hashstringlist_append,METH_VARARGS,
hashstringlist_append_doc},
{}
};
static PyGetSetDef hashstringlist_getset[] = {
{"file_size",hashstringlist_get_file_size,hashstringlist_set_file_size,
"If a file size is part of the list, return it, otherwise 0."},
{"usable",hashstringlist_get_usable,nullptr,
"True if at least one safe/trusted hash is in the list."},
{}
};
static char *hashstringlist_doc =
"HashStringList()\n\n"
"Manage a list of HashStrings.\n\n"
"The list knows which hash is the best and provides convenience\n"
"methods for file verification.\n\n"
".. versionadded:: 1.1";
PyTypeObject PyHashStringList_Type = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
"apt_pkg.HashStringList", // tp_name
sizeof(CppPyObject<HashStringList>), // tp_basicsize
0, // tp_itemsize
// Methods
CppDealloc<HashStringList>, // tp_dealloc
0, // tp_print
0, // tp_getattr
0, // tp_setattr
0, // tp_compare
0, // tp_repr
0, // tp_as_number
&hashstringlist_seq_methods, // 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
Py_TPFLAGS_DEFAULT, // tp_flags
hashstringlist_doc, // tp_doc
0, // tp_traverse
0, // tp_clear
0, // tp_richcompare
0, // tp_weaklistoffset
0, // tp_iter
0, // tp_iternext
hashstringlist_methods, // tp_methods
0, // tp_members
hashstringlist_getset, // tp_getset
0, // tp_base
0, // tp_dict
0, // tp_descr_get
0, // tp_descr_set
0, // tp_dictoffset
hashstringlist_init, // tp_init
0, // tp_alloc
hashstringlist_new, // tp_new
};
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