p≡p for Python
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#include <Python.h>
#include "message.hh"
#include <stdlib.h>
#include <string.h>
#include <stdexcept>
#include <sstream>
#include <pEp/mime.h>
namespace pEp {
namespace PythonAdapter {
using namespace std;
Message::Blob::Blob(bloblist_t *bl, bool chained) :
_bl(bl), part_of_chain(chained)
{
if (!_bl)
throw bad_alloc();
}
Message::Blob::Blob(object data, string mime_type, string filename) :
_bl(new_bloblist(NULL, 0, NULL, NULL)), part_of_chain(false)
{
if (!_bl)
throw bad_alloc();
Py_buffer src;
int result = PyObject_GetBuffer(data.ptr(), &src, PyBUF_CONTIG_RO);
if (result)
throw invalid_argument("need a contiguous buffer to read");
char *mem = (char *)malloc(src.len);
if (!mem) {
PyBuffer_Release(&src);
throw bad_alloc();
}
memcpy(mem, src.buf, src.len);
free(_bl->value);
_bl->size = src.len;
_bl->value = mem;
PyBuffer_Release(&src);
this->mime_type(mime_type);
this->filename(filename);
}
Message::Blob::Blob(const Message::Blob& second) :
_bl(bloblist_dup(second._bl)), part_of_chain(false)
{
if (!_bl)
throw bad_alloc();
}
Message::Blob::~Blob()
{
if (!part_of_chain) {
free(_bl->value);
free(_bl);
}
}
string Message::Blob::_repr()
{
stringstream build;
build << "Blob(";
if (!_bl) {
build << "b'', '', ''";
}
else {
build << "bytes(" << _bl->size << "), ";
string mime_type;
if (_bl->mime_type)
mime_type = string(_bl->mime_type);
string filename;
if (_bl->filename)
filename = string(_bl->filename);
build << repr(mime_type) << ", ";
build << repr(filename);
}
build << ")";
return build.str();
}
int Message::Blob::getbuffer(PyObject *self, Py_buffer *view, int flags) {
bloblist_t *bl = NULL;
try {
Message::Blob& blob = extract< Message::Blob& >(self);
bl = blob._bl;
}
catch (exception& e) {
PyErr_SetString(PyExc_RuntimeError, "extract not possible");
view->obj = NULL;
return -1;
}
if (!(bl && bl->value)) {
PyErr_SetString(PyExc_RuntimeError, "no data available");
view->obj = NULL;
return -1;
}
return PyBuffer_FillInfo(view, self, bl->value, bl->size, 0, flags);
}
PyBufferProcs Message::Blob::bp = { getbuffer, NULL };
Message::Message(PEP_msg_direction dir)
: _msg(new_message(dir))
{
if (!_msg)
throw bad_alloc();
}
Message::Message(string mimetext)
{
_msg = NULL;
PEP_STATUS status = mime_decode_message(mimetext.c_str(),
mimetext.size(), &_msg);
switch (status) {
case PEP_STATUS_OK:
if (_msg)
return;
_msg = new_message(PEP_dir_incoming);
break;
case PEP_BUFFER_TOO_SMALL:
throw runtime_error("mime_decode_message: buffer too small");
case PEP_CANNOT_CREATE_TEMP_FILE:
throw runtime_error("mime_decode_message: cannot create temp file");
case PEP_OUT_OF_MEMORY:
throw bad_alloc();
default:
stringstream build;
build << "mime_decode_message: unknown error (" << (int) status << ")";
throw runtime_error(build.str());
}
}
Message::Message(const Message& second)
: _msg(message_dup(second._msg))
{
if (!_msg)
throw bad_alloc();
}
Message::Message(message *msg)
: _msg(msg)
{
}
Message::~Message()
{
free_message(_msg);
}
void Message::attach(message *msg)
{
free_message(_msg);
_msg = msg;
}
message *Message::detach()
{
message *new_one = new_message(_msg->dir);
if (!new_one)
throw bad_alloc();
message *msg = _msg;
_msg = new_one;
return msg;
}
Message::operator message *()
{
if (!_msg)
throw bad_cast();
return _msg;
}
string Message::_str()
{
if (!(_msg->from && _msg->from->address && _msg->from->address[0]))
return "< incomplete pEp.Message object: from missing >";
char *mimetext;
string result;
PEP_STATUS status = mime_encode_message(_msg, false, &mimetext);
switch (status) {
case PEP_STATUS_OK:
result = mimetext;
free(mimetext);
break;
case PEP_BUFFER_TOO_SMALL:
result = "< Message MIME error: buffer too small >";
break;
case PEP_CANNOT_CREATE_TEMP_FILE:
result = "< Message MIME error: cannot create temp file >";
break;
case PEP_OUT_OF_MEMORY:
throw bad_alloc();
default:
result = "< Message MIME error: unknown >";
}
return result;
}
tuple Message::attachments()
{
list l;
for (bloblist_t *bl = _msg->attachments; bl && bl->value; bl =
bl->next) {
l.append(Blob(bl, true));
}
return tuple(l);
}
void Message::attachments(list value)
{
bloblist_t *bl = new_bloblist(NULL, 0, NULL, NULL);
if (!bl)
throw bad_alloc();
bloblist_t *_l = bl;
for (int i=0; i<len(value); i++) {
Message::Blob& blob = extract< Message::Blob& >(value[i]);
_l = bloblist_add(_l, blob._bl->value, blob._bl->size,
blob._bl->mime_type, blob._bl->filename);
if (!_l) {
for (_l = bl; _l && _l->value; ) {
free(_l->mime_type);
free(_l->filename);
bloblist_t *_ll = _l;
_l = _l->next;
free(_ll);
}
throw bad_alloc();
}
}
for (int i=0; i<len(value); i++) {
Message::Blob& blob = extract< Message::Blob& >(value[i]);
blob._bl->value = NULL;
blob._bl->size = 0;
free(blob._bl->mime_type);
blob._bl->mime_type = NULL;
free(blob._bl->filename);
blob._bl->filename = NULL;
}
free_bloblist(_msg->attachments);
_msg->attachments = bl;
}
}
}