1 #include "rpmsystem-py.h"
3 #include <rpm/rpmlib.h> /* rpmvercmp */
4 #include <rpm/rpmtag.h>
5 #include <rpm/rpmstring.h>
6 #include <rpm/rpmts.h> /* XXX rpmtsCreate/rpmtsFree */
18 * \brief START HERE / RPM base module for the Python API
20 * The rpm base module provides the main starting point for
21 * accessing RPM from Python. For most usage, call
22 * the TransactionSet method to get a transaction set (rpmts).
28 * ts = rpm.TransactionSet()
31 * The transaction set will open the RPM database as needed, so
32 * in most cases, you do not need to explicitly open the
33 * database. The transaction set is the workhorse of RPM.
35 * You can open another RPM database, such as one that holds
36 * all packages for a given Linux distribution, to provide
37 * packages used to solve dependencies. To do this, use
41 * rpm.addMacro('_dbpath', '/path/to/alternate/database')
42 * solvets = rpm.TransactionSet()
44 * rpm.delMacro('_dbpath')
46 * # Open default database
47 * ts = rpm.TransactionSet()
50 * This code gives you access to two RPM databases through
51 * two transaction sets (rpmts): ts is a transaction set
52 * associated with the default RPM database and solvets
53 * is a transaction set tied to an alternate database, which
54 * is very useful for resolving dependencies.
56 * The rpm methods used here are:
58 * - addMacro(macro, value)
59 * @param macro Name of macro to add
60 * @param value Value for the macro
63 * @param macro Name of macro to delete
69 * \brief A python header object represents an RPM package header.
71 * All RPM packages have headers that provide metadata for the package.
72 * Header objects can be returned by database queries or loaded from a
73 * binary package on disk.
75 * The ts.hdrFromFdno() function returns the package header from a
76 * package on disk, verifying package signatures and digests of the
77 * package while reading.
79 * Note: The older method rpm.headerFromPackage() which has been replaced
80 * by ts.hdrFromFdno() used to return a (hdr, isSource) tuple.
82 * If you need to distinguish source/binary headers, do:
86 * ts = rpm.TransactionSet()
87 * fdno = os.open("/tmp/foo-1.0-1.i386.rpm", os.O_RDONLY)
88 * hdr = ts.hdrFromFdno(fdno)
90 * if hdr[rpm.RPMTAG_SOURCEPACKAGE]:
91 * print "header is from a source package"
93 * print "header is from a binary package"
96 * The Python interface to the header data is quite elegant. It
97 * presents the data in a dictionary form. We'll take the header we
98 * just loaded and access the data within it:
100 * print hdr[rpm.RPMTAG_NAME]
101 * print hdr[rpm.RPMTAG_VERSION]
102 * print hdr[rpm.RPMTAG_RELEASE]
104 * in the case of our "foo-1.0-1.i386.rpm" package, this code would
112 * You make also access the header data by string name:
115 * print hdr['version']
116 * print hdr['release']
119 * This method of access is a teensy bit slower because the name must be
120 * translated into the tag number dynamically. You also must make sure
121 * the strings in header lookups don't get translated, or the lookups
126 * \name Class: rpm.hdr
135 static PyObject * hdrKeyList(hdrObject * s)
137 PyObject * keys = PyList_New(0);
138 HeaderIterator hi = headerInitIterator(s->h);
141 while ((tag = headerNextTag(hi)) != RPMTAG_NOT_FOUND) {
142 PyList_Append(keys, PyInt_FromLong(tag));
144 headerFreeIterator(hi);
149 static PyObject * hdrUnload(hdrObject * s, PyObject * args, PyObject *keywords)
155 static char *kwlist[] = { "legacyHeader", NULL};
157 if (!PyArg_ParseTupleAndKeywords(args, keywords, "|i", kwlist, &legacy))
160 h = headerLink(s->h);
161 /* XXX this legacy switch is a hack, needs to be removed. */
163 h = headerCopy(s->h); /* XXX strip region tags, etc */
166 len = headerSizeof(h, 0);
167 buf = headerUnload(h);
170 if (buf == NULL || len == 0) {
171 PyErr_SetString(pyrpmError, "can't unload bad header\n");
175 rc = PyBytes_FromStringAndSize(buf, len);
181 static PyObject * hdrExpandFilelist(hdrObject * s)
183 DEPRECATED_METHOD("use hdr.convert() instead");
184 headerConvert(s->h, HEADERCONV_EXPANDFILELIST);
189 static PyObject * hdrCompressFilelist(hdrObject * s)
191 DEPRECATED_METHOD("use hdr.convert() instead");
192 headerConvert(s->h, HEADERCONV_COMPRESSFILELIST);
197 /* make a header with _all_ the tags we need */
198 static PyObject * hdrFullFilelist(hdrObject * s)
200 rpmtd fileNames = rpmtdNew();
203 DEPRECATED_METHOD("obsolete method");
204 if (!headerIsEntry (h, RPMTAG_BASENAMES)
205 || !headerIsEntry (h, RPMTAG_DIRNAMES)
206 || !headerIsEntry (h, RPMTAG_DIRINDEXES))
207 headerConvert(h, HEADERCONV_COMPRESSFILELIST);
209 if (headerGet(h, RPMTAG_FILENAMES, fileNames, HEADERGET_EXT)) {
210 rpmtdSetTag(fileNames, RPMTAG_OLDFILENAMES);
211 headerPut(h, fileNames, HEADERPUT_DEFAULT);
212 rpmtdFreeData(fileNames);
214 rpmtdFree(fileNames);
219 static PyObject * hdrFormat(hdrObject * s, PyObject * args, PyObject * kwds)
225 char * kwlist[] = {"format", NULL};
227 if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &fmt))
230 r = headerFormat(s->h, fmt, &err);
232 PyErr_SetString(pyrpmError, err);
236 result = Py_BuildValue("s", r);
242 static PyObject *hdrInstance(hdrObject *s)
244 return Py_BuildValue("i", headerGetInstance(s->h));
247 static PyObject *hdrIsSource(hdrObject *s)
249 return PyBool_FromLong(headerIsSource(s->h));
252 static PyObject *hdrHasKey(hdrObject *s, PyObject *pytag)
255 if (!tagNumFromPyObject(pytag, &tag)) return NULL;
257 return PyBool_FromLong(headerIsEntry(s->h, tag));
260 static PyObject *hdrConvert(hdrObject *self, PyObject *args, PyObject *kwds)
262 char *kwlist[] = {"op", NULL};
263 headerConvOps op = -1;
265 if (!PyArg_ParseTupleAndKeywords(args, kwds, "i", kwlist, &op)) {
268 return PyBool_FromLong(headerConvert(self->h, op));
271 static PyObject * hdrWrite(hdrObject *s, PyObject *args, PyObject *kwds)
273 char *kwlist[] = { "file", "magic", NULL };
275 rpmfdObject *fdo = NULL;
278 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O&|i", kwlist,
279 rpmfdFromPyObject, &fdo, &magic))
282 Py_BEGIN_ALLOW_THREADS;
283 rc = headerWrite(rpmfdGetFd(fdo), s->h,
284 magic ? HEADER_MAGIC_YES : HEADER_MAGIC_NO);
285 Py_END_ALLOW_THREADS;
287 if (rc) PyErr_SetFromErrno(PyExc_IOError);
288 Py_XDECREF(fdo); /* avoid messing up errno with file close */
294 static PyObject * hdr_fiFromHeader(PyObject * s, PyObject * args, PyObject * kwds)
296 /* XXX this isn't quite right wrt arg passing */
297 return PyObject_Call((PyObject *) &rpmfi_Type,
298 Py_BuildValue("(O)", s), kwds);
301 static PyObject * hdr_dsFromHeader(PyObject * s, PyObject * args, PyObject * kwds)
303 /* XXX this isn't quite right wrt arg passing */
304 return PyObject_Call((PyObject *) &rpmds_Type,
305 Py_BuildValue("(O)", s), kwds);
308 static PyObject * hdr_dsOfHeader(PyObject * s)
310 return PyObject_Call((PyObject *) &rpmds_Type,
311 Py_BuildValue("(Oi)", s, RPMTAG_NEVR), NULL);
314 static long hdr_hash(PyObject * h)
319 static struct PyMethodDef hdr_methods[] = {
320 {"keys", (PyCFunction) hdrKeyList, METH_NOARGS,
322 {"unload", (PyCFunction) hdrUnload, METH_VARARGS|METH_KEYWORDS,
324 {"expandFilelist", (PyCFunction) hdrExpandFilelist,METH_NOARGS,
326 {"compressFilelist",(PyCFunction) hdrCompressFilelist,METH_NOARGS,
328 {"fullFilelist", (PyCFunction) hdrFullFilelist, METH_NOARGS,
330 {"convert", (PyCFunction) hdrConvert, METH_VARARGS|METH_KEYWORDS,
332 {"format", (PyCFunction) hdrFormat, METH_VARARGS|METH_KEYWORDS,
334 {"has_key", (PyCFunction) hdrHasKey, METH_O,
336 {"sprintf", (PyCFunction) hdrFormat, METH_VARARGS|METH_KEYWORDS,
338 {"instance", (PyCFunction)hdrInstance, METH_NOARGS,
340 {"isSource", (PyCFunction)hdrIsSource, METH_NOARGS,
342 {"write", (PyCFunction)hdrWrite, METH_VARARGS|METH_KEYWORDS,
344 {"dsOfHeader", (PyCFunction)hdr_dsOfHeader, METH_NOARGS,
346 {"dsFromHeader", (PyCFunction)hdr_dsFromHeader, METH_VARARGS|METH_KEYWORDS,
348 {"fiFromHeader", (PyCFunction)hdr_fiFromHeader, METH_VARARGS|METH_KEYWORDS,
351 {NULL, NULL} /* sentinel */
354 /* TODO: permit keyring check + retrofits on copy/load */
355 static PyObject *hdr_new(PyTypeObject *subtype, PyObject *args, PyObject *kwds)
357 PyObject *obj = NULL;
358 rpmfdObject *fdo = NULL;
360 char *kwlist[] = { "obj", NULL };
362 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O", kwlist, &obj)) {
368 } else if (PyCObject_Check(obj)) {
369 h = PyCObject_AsVoidPtr(obj);
370 } else if (hdrObject_Check(obj)) {
371 h = headerCopy(((hdrObject*) obj)->h);
372 } else if (PyBytes_Check(obj)) {
373 h = headerCopyLoad(PyBytes_AsString(obj));
374 } else if (rpmfdFromPyObject(obj, &fdo)) {
375 Py_BEGIN_ALLOW_THREADS;
376 h = headerRead(rpmfdGetFd(fdo), HEADER_MAGIC_YES);
377 Py_END_ALLOW_THREADS;
380 PyErr_SetString(PyExc_TypeError, "header, blob or file expected");
385 PyErr_SetString(pyrpmError, "bad header");
389 return hdr_Wrap(subtype, h);
392 static void hdr_dealloc(hdrObject * s)
394 if (s->h) headerFree(s->h);
395 Py_TYPE(s)->tp_free((PyObject *)s);
398 static PyObject * hdr_iternext(hdrObject *s)
400 PyObject *res = NULL;
403 if (s->hi == NULL) s->hi = headerInitIterator(s->h);
405 if ((tag = headerNextTag(s->hi)) != RPMTAG_NOT_FOUND) {
407 res = PyObject_Call((PyObject *) &rpmtd_Type,
408 Py_BuildValue("(Oii)", s, tag, raw), NULL);
410 s->hi = headerFreeIterator(s->hi);
415 int utf8FromPyObject(PyObject *item, PyObject **str)
417 PyObject *res = NULL;
418 if (PyBytes_Check(item)) {
421 } else if (PyUnicode_Check(item)) {
422 res = PyUnicode_AsUTF8String(item);
424 if (res == NULL) return 0;
430 int tagNumFromPyObject (PyObject *item, rpmTag *tagp)
432 rpmTag tag = RPMTAG_NOT_FOUND;
433 PyObject *str = NULL;
435 if (PyInt_Check(item)) {
436 /* XXX we should probably validate tag numbers too */
437 tag = PyInt_AsLong(item);
438 } else if (utf8FromPyObject(item, &str)) {
439 tag = rpmTagGetValue(PyBytes_AsString(str));
442 PyErr_SetString(PyExc_TypeError, "expected a string or integer");
445 if (tag == RPMTAG_NOT_FOUND) {
446 PyErr_SetString(PyExc_ValueError, "unknown header tag");
454 static PyObject * hdrGetTag(Header h, rpmTag tag)
456 PyObject *res = NULL;
459 /* rpmtd_AsPyObj() knows how to handle empty containers and all */
460 (void) headerGet(h, tag, &td, HEADERGET_EXT);
461 res = rpmtd_AsPyobj(&td);
466 static PyObject * hdr_subscript(hdrObject * s, PyObject * item)
470 if (!tagNumFromPyObject(item, &tag)) return NULL;
471 return hdrGetTag(s->h, tag);
474 static int hdr_ass_subscript(hdrObject *s, PyObject *key, PyObject *value)
478 if (!tagNumFromPyObject(key, &tag)) return -1;
481 /* XXX should failure raise key error? */
482 headerDel(s->h, tag);
483 } else if (rpmtdFromPyObject(value, &td)) {
484 headerPut(s->h, td, HEADERPUT_DEFAULT);
491 static PyObject * hdr_getattro(hdrObject * s, PyObject * n)
493 PyObject *res = PyObject_GenericGetAttr((PyObject *) s, n);
496 if (tagNumFromPyObject(n, &tag)) {
498 res = hdrGetTag(s->h, tag);
504 static int hdr_setattro(PyObject * o, PyObject * n, PyObject * v)
506 return PyObject_GenericSetAttr(o, n, v);
509 static PyMappingMethods hdr_as_mapping = {
510 (lenfunc) 0, /* mp_length */
511 (binaryfunc) hdr_subscript, /* mp_subscript */
512 (objobjargproc)hdr_ass_subscript,/* mp_ass_subscript */
515 static char hdr_doc[] =
518 PyTypeObject hdr_Type = {
519 PyVarObject_HEAD_INIT(&PyType_Type, 0)
520 "rpm.hdr", /* tp_name */
521 sizeof(hdrObject), /* tp_size */
523 (destructor) hdr_dealloc, /* tp_dealloc */
525 (getattrfunc) 0, /* tp_getattr */
529 0, /* tp_as_number */
530 0, /* tp_as_sequence */
531 &hdr_as_mapping, /* tp_as_mapping */
532 hdr_hash, /* tp_hash */
535 (getattrofunc) hdr_getattro, /* tp_getattro */
536 (setattrofunc) hdr_setattro, /* tp_setattro */
537 0, /* tp_as_buffer */
538 Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE, /* tp_flags */
539 hdr_doc, /* tp_doc */
542 0, /* tp_richcompare */
543 0, /* tp_weaklistoffset */
544 PyObject_SelfIter, /* tp_iter */
545 (iternextfunc)hdr_iternext, /* tp_iternext */
546 hdr_methods, /* tp_methods */
551 0, /* tp_descr_get */
552 0, /* tp_descr_set */
553 0, /* tp_dictoffset */
556 hdr_new, /* tp_new */
561 PyObject * hdr_Wrap(PyTypeObject *subtype, Header h)
563 hdrObject * hdr = (hdrObject *)subtype->tp_alloc(subtype, 0);
564 if (hdr == NULL) return NULL;
566 hdr->h = headerLink(h);
567 return (PyObject *) hdr;
570 int hdrFromPyObject(PyObject *item, Header *hptr)
572 if (hdrObject_Check(item)) {
573 *hptr = ((hdrObject *) item)->h;
576 PyErr_SetString(PyExc_TypeError, "header object expected");
582 * This assumes the order of list matches the order of the new headers, and
583 * throws an exception if that isn't true.
585 static int rpmMergeHeaders(PyObject * list, FD_t fd, int matchTag)
589 rpmTag newMatch, oldMatch;
591 rpm_count_t count = 0;
592 int rc = 1; /* assume failure */
593 rpmtd td = rpmtdNew();
595 Py_BEGIN_ALLOW_THREADS
596 h = headerRead(fd, HEADER_MAGIC_YES);
600 if (!headerGet(h, matchTag, td, HEADERGET_MINMEM)) {
601 PyErr_SetString(pyrpmError, "match tag missing in new header");
604 newMatch = rpmtdTag(td);
607 hdr = (hdrObject *) PyList_GetItem(list, count++);
610 if (!headerGet(hdr->h, matchTag, td, HEADERGET_MINMEM)) {
611 PyErr_SetString(pyrpmError, "match tag missing in new header");
614 oldMatch = rpmtdTag(td);
617 if (newMatch != oldMatch) {
618 PyErr_SetString(pyrpmError, "match tag mismatch");
622 for (hi = headerInitIterator(h); headerNext(hi, td); rpmtdFreeData(td))
625 headerDel(hdr->h, rpmtdTag(td));
626 headerPut(hdr->h, td, HEADERPUT_DEFAULT);
629 headerFreeIterator(hi);
632 Py_BEGIN_ALLOW_THREADS
633 h = headerRead(fd, HEADER_MAGIC_YES);
644 rpmMergeHeadersFromFD(PyObject * self, PyObject * args, PyObject * kwds)
651 char * kwlist[] = {"list", "fd", "matchTag", NULL};
653 if (!PyArg_ParseTupleAndKeywords(args, kwds, "Oii", kwlist, &list,
657 if (!PyList_Check(list)) {
658 PyErr_SetString(PyExc_TypeError, "first parameter must be a list");
664 rc = rpmMergeHeaders (list, fd, matchTag);
674 PyObject * versionCompare (PyObject * self, PyObject * args, PyObject * kwds)
676 hdrObject * h1, * h2;
677 char * kwlist[] = {"version0", "version1", NULL};
679 if (!PyArg_ParseTupleAndKeywords(args, kwds, "O!O!", kwlist, &hdr_Type,
680 &h1, &hdr_Type, &h2))
683 return Py_BuildValue("i", rpmVersionCompare(h1->h, h2->h));
686 static int compare_values(const char *str1, const char *str2)
690 else if (str1 && !str2)
692 else if (!str1 && str2)
694 return rpmvercmp(str1, str2);
697 PyObject * labelCompare (PyObject * self, PyObject * args)
699 char *v1, *r1, *v2, *r2;
703 if (!PyArg_ParseTuple(args, "(zzz)(zzz)",
704 &e1, &v1, &r1, &e2, &v2, &r2))
707 if (e1 == NULL) e1 = "0";
708 if (e2 == NULL) e2 = "0";
710 rc = compare_values(e1, e2);
712 rc = compare_values(v1, v2);
714 rc = compare_values(r1, r2);
716 return Py_BuildValue("i", rc);