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#!/usr/bin/python -tt # 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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # Copyright 2003 Duke University import rpm import types import gzip import os import sys import locale import signal import rpmUtils.transaction def rpmOutToStr(arg): if type(arg) != types.StringType: # and arg is not None: arg = str(arg) return arg def compareEVR((e1, v1, r1), (e2, v2, r2)): # return 1: a is newer than b # 0: a and b are the same version # -1: b is newer than a if e1 is None: e1 = '0' else: e1 = str(e1) v1 = str(v1) r1 = str(r1) if e2 is None: e2 = '0' else: e2 = str(e2) v2 = str(v2) r2 = str(r2) #print '%s, %s, %s vs %s, %s, %s' % (e1, v1, r1, e2, v2, r2) rc = rpm.labelCompare((e1, v1, r1), (e2, v2, r2)) #print '%s, %s, %s vs %s, %s, %s = %s' % (e1, v1, r1, e2, v2, r2, rc) return rc def compareVerOnly(v1, v2): """compare version strings only using rpm vercmp""" return compareEVR(('', v1, ''), ('', v2, '')) def checkSig(ts, package, payload=False): """Takes a transaction set and a package, check it's sigs. By default, only v4 sigs (header-only) will be verified (faster). By setting payload to True, v3 sigs (header+payload) will also be verified (slower). return 0 if they are all fine return 1 if the gpg key can't be found return 2 if the header or payload is in someway damaged return 3 if the key is not trusted return 4 if the pkg is not gpg or pgp signed""" value = 0 currentflags = ts.setVSFlags(0) fdno = os.open(package, os.O_RDONLY) try: hdr = ts.hdrFromFdno(fdno) except rpm.error, e: if str(e) == "public key not availaiable": value = 1 if str(e) == "public key not available": value = 1 if str(e) == "public key not trusted": value = 3 if str(e) == "error reading package header": value = 2 else: error, siginfo = getSigInfo(hdr) if error == 101: os.close(fdno) del hdr value = 4 else: del hdr # Don't perform the payload check if the header check failed, otherwise we # could mask the reason stored in "value" (we only return one integer from # this function and shouldn't change that). if payload and value == 0: os.lseek(fdno, 0, 0) # We don't want the OK message to pollute the output but we do want the # BAD message (verbose version) in case of a failure, which is only # possible by running _verifySigs() twice (temporary hack until we have # the proper API for payload verification in RPM). rpm.setVerbosity(rpm.RPMLOG_WARNING) valid = ts._verifySigs(fdno, package) if not valid: value = 2 os.lseek(fdno, 0, 0) rpm.setVerbosity(rpm.RPMLOG_INFO) ts._verifySigs(fdno, package) rpm.setVerbosity(rpm.RPMLOG_NOTICE) try: os.close(fdno) except OSError, e: # if we're not opened, don't scream about it pass ts.setVSFlags(currentflags) # put things back like they were before return value def getSigInfo(hdr): """checks signature from an hdr hand back signature information and/or an error code""" locale.setlocale(locale.LC_ALL, 'C') string = '%|DSAHEADER?{%{DSAHEADER:pgpsig}}:{%|RSAHEADER?{%{RSAHEADER:pgpsig}}:{%|SIGGPG?{%{SIGGPG:pgpsig}}:{%|SIGPGP?{%{SIGPGP:pgpsig}}:{(none)}|}|}|}|' siginfo = hdr.sprintf(string) if siginfo != '(none)': error = 0 sigtype, sigdate, sigid = siginfo.split(',') else: error = 101 sigtype = 'MD5' sigdate = 'None' sigid = 'None' infotuple = (sigtype, sigdate, sigid) return error, infotuple def pkgTupleFromHeader(hdr): """return a pkgtuple (n, a, e, v, r) from a hdr object, converts None epoch to 0, as well.""" name = hdr['name'] # RPMTAG_SOURCEPACKAGE: RPMTAG_SOURCERPM is not necessarily there for # e.g. gpg-pubkeys imported with older rpm versions # http://lists.baseurl.org/pipermail/yum/2009-January/022275.html if hdr[rpm.RPMTAG_SOURCERPM] or hdr[rpm.RPMTAG_SOURCEPACKAGE] != 1: arch = hdr['arch'] else: arch = 'src' ver = hdr['version'] rel = hdr['release'] epoch = hdr['epoch'] if epoch is None: epoch = '0' pkgtuple = (name, arch, epoch, ver, rel) return pkgtuple def rangeCheck(reqtuple, pkgtuple): """returns true if the package epoch-ver-rel satisfy the range requested in the reqtuple: ex: foo >= 2.1-1""" # we only ever get here if we have a versioned prco # nameonly shouldn't ever raise it #(reqn, reqf, (reqe, reqv, reqr)) = reqtuple (n, a, e, v, r) = pkgtuple return rangeCompare(reqtuple, (n, 'EQ', (e, v, r))) def rangeCompare(reqtuple, provtuple): """returns true if provtuple satisfies reqtuple""" (reqn, reqf, (reqe, reqv, reqr)) = reqtuple (n, f, (e, v, r)) = provtuple if reqn != n: return 0 # unversioned satisfies everything if not f or not reqf: return 1 # and you thought we were done having fun # if the requested release is left out then we have # to remove release from the package prco to make sure the match # is a success - ie: if the request is EQ foo 1:3.0.0 and we have # foo 1:3.0.0-15 then we have to drop the 15 so we can match if reqr is None: r = None if reqe is None: e = None if reqv is None: # just for the record if ver is None then we're going to segfault v = None # if we just require foo-version, then foo-version-* will match if r is None: reqr = None rc = compareEVR((e, v, r), (reqe, reqv, reqr)) # does not match unless if rc >= 1: if reqf in ['GT', 'GE', 4, 12, '>', '>=']: return 1 if reqf in ['EQ', 8, '=']: if f in ['LE', 10, 'LT', 2,'<=', '<']: return 1 if reqf in ['LE', 'LT', 'EQ', 10, 2, 8, '<=', '<', '=']: if f in ['LE', 'LT', 10, 2, '<=', '<']: return 1 if rc == 0: if reqf in ['GT', 4, '>']: if f in ['GT', 'GE', 4, 12, '>', '>=']: return 1 if reqf in ['GE', 12, '>=']: if f in ['GT', 'GE', 'EQ', 'LE', 4, 12, 8, 10, '>', '>=', '=', '<=']: return 1 if reqf in ['EQ', 8, '=']: if f in ['EQ', 'GE', 'LE', 8, 12, 10, '=', '>=', '<=']: return 1 if reqf in ['LE', 10, '<=']: if f in ['EQ', 'LE', 'LT', 'GE', 8, 10, 2, 12, '=', '<=', '<' , '>=']: return 1 if reqf in ['LT', 2, '<']: if f in ['LE', 'LT', 10, 2, '<=', '<']: return 1 if rc <= -1: if reqf in ['GT', 'GE', 'EQ', 4, 12, 8, '>', '>=', '=']: if f in ['GT', 'GE', 4, 12, '>', '>=']: return 1 if reqf in ['LE', 'LT', 10, 2, '<=', '<']: return 1 # if rc >= 1: # if reqf in ['GT', 'GE', 4, 12, '>', '>=']: # return 1 # if rc == 0: # if reqf in ['GE', 'LE', 'EQ', 8, 10, 12, '>=', '<=', '=']: # return 1 # if rc <= -1: # if reqf in ['LT', 'LE', 2, 10, '<', '<=']: # return 1 return 0 ########### # Title: Remove duplicates from a sequence # Submitter: Tim Peters # From: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52560 def unique(s): """Return a list of the elements in s, but without duplicates. For example, unique([1,2,3,1,2,3]) is some permutation of [1,2,3], unique("abcabc") some permutation of ["a", "b", "c"], and unique(([1, 2], [2, 3], [1, 2])) some permutation of [[2, 3], [1, 2]]. For best speed, all sequence elements should be hashable. Then unique() will usually work in linear time. If not possible, the sequence elements should enjoy a total ordering, and if list(s).sort() doesn't raise TypeError it's assumed that they do enjoy a total ordering. Then unique() will usually work in O(N*log2(N)) time. If that's not possible either, the sequence elements must support equality-testing. Then unique() will usually work in quadratic time. """ n = len(s) if n == 0: return [] # Try using a dict first, as that's the fastest and will usually # work. If it doesn't work, it will usually fail quickly, so it # usually doesn't cost much to *try* it. It requires that all the # sequence elements be hashable, and support equality comparison. u = {} try: for x in s: u[x] = 1 except TypeError: del u # move on to the next method else: return u.keys() # We can't hash all the elements. Second fastest is to sort, # which brings the equal elements together; then duplicates are # easy to weed out in a single pass. # NOTE: Python's list.sort() was designed to be efficient in the # presence of many duplicate elements. This isn't true of all # sort functions in all languages or libraries, so this approach # is more effective in Python than it may be elsewhere. try: t = list(s) t.sort() except TypeError: del t # move on to the next method else: assert n > 0 last = t[0] lasti = i = 1 while i < n: if t[i] != last: t[lasti] = last = t[i] lasti += 1 i += 1 return t[:lasti] # Brute force is all that's left. u = [] for x in s: if x not in u: u.append(x) return u def splitFilename(filename): """ Pass in a standard style rpm fullname Return a name, version, release, epoch, arch, e.g.:: foo-1.0-1.i386.rpm returns foo, 1.0, 1, i386 1:bar-9-123a.ia64.rpm returns bar, 9, 123a, 1, ia64 """ if filename[-4:] == '.rpm': filename = filename[:-4] archIndex = filename.rfind('.') arch = filename[archIndex+1:] relIndex = filename[:archIndex].rfind('-') rel = filename[relIndex+1:archIndex] verIndex = filename[:relIndex].rfind('-') ver = filename[verIndex+1:relIndex] epochIndex = filename.find(':') if epochIndex == -1: epoch = '' else: epoch = filename[:epochIndex] name = filename[epochIndex + 1:verIndex] return name, ver, rel, epoch, arch def rpm2cpio(fdno, out=sys.stdout, bufsize=2048): """Performs roughly the equivalent of rpm2cpio(8). Reads the package from fdno, and dumps the cpio payload to out, using bufsize as the buffer size.""" ts = rpmUtils.transaction.initReadOnlyTransaction() hdr = ts.hdrFromFdno(fdno) del ts compr = hdr[rpm.RPMTAG_PAYLOADCOMPRESSOR] or 'gzip' #XXX FIXME #if compr == 'bzip2': # TODO: someone implement me! #el if compr != 'gzip': raise rpmUtils.RpmUtilsError, \ 'Unsupported payload compressor: "%s"' % compr f = gzip.GzipFile(None, 'rb', None, os.fdopen(fdno, 'rb', bufsize)) while 1: tmp = f.read(bufsize) if tmp == "": break out.write(tmp) f.close() def formatRequire (name, version, flags): ''' Return a human readable requirement string (ex. foobar >= 2.0) @param name: requirement name (ex. foobar) @param version: requirent version (ex. 2.0) @param flags: binary flags ( 0010 = equal, 0100 = greater than, 1000 = less than ) ''' s = name if flags and (type(flags) == type(0) or type(flags) == type(0L)): # Flag must be set and a int (or a long, now) if flags & (rpm.RPMSENSE_LESS | rpm.RPMSENSE_GREATER | rpm.RPMSENSE_EQUAL): s = s + " " if flags & rpm.RPMSENSE_LESS: s = s + "<" if flags & rpm.RPMSENSE_GREATER: s = s + ">" if flags & rpm.RPMSENSE_EQUAL: s = s + "=" if version: s = "%s %s" %(s, version) return s def flagToString(flags): flags = flags & 0xf if flags == 0: return None elif flags == 2: return 'LT' elif flags == 4: return 'GT' elif flags == 8: return 'EQ' elif flags == 10: return 'LE' elif flags == 12: return 'GE' return flags def stringToVersion(verstring): if verstring in [None, '']: return (None, None, None) i = verstring.find(':') if i != -1: try: epoch = str(long(verstring[:i])) except ValueError: # look, garbage in the epoch field, how fun, kill it epoch = '0' # this is our fallback, deal else: epoch = '0' j = verstring.find('-') if j != -1: if verstring[i + 1:j] == '': version = None else: version = verstring[i + 1:j] release = verstring[j + 1:] else: if verstring[i + 1:] == '': version = None else: version = verstring[i + 1:] release = None return (epoch, version, release) def hdrFromPackage(ts, package): """hand back the rpm header or raise an Error if the pkg is fubar""" try: fdno = os.open(package, os.O_RDONLY) except OSError, e: raise rpmUtils.RpmUtilsError, 'Unable to open file' # XXX: We should start a readonly ts here, so we don't get the options # from the other one (sig checking, etc) try: hdr = ts.hdrFromFdno(fdno) except rpm.error, e: os.close(fdno) raise rpmUtils.RpmUtilsError, "RPM Error opening Package" if type(hdr) != rpm.hdr: os.close(fdno) raise rpmUtils.RpmUtilsError, "RPM Error opening Package (type)" os.close(fdno) return hdr def checkSignals(): if hasattr(rpm, "checkSignals") and hasattr(rpm, 'signalsCaught'): if rpm.signalsCaught([signal.SIGINT, signal.SIGTERM, signal.SIGPIPE, signal.SIGQUIT, signal.SIGHUP]): sys.exit(1)
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