import rpm import rhpl.arch import string from constants import * # set DB_PRIVATE to make rpm happy rpm.addMacro("__dbi_cdb", "create private mpool mp_mmapsize=16Mb mp_size=1Mb") def dEBUG(str): print str def addNewPackageToUpgSet(pkgDict, pkg): """Check to see if there's already a pkg by the name of pkg already in our dictionary. If not, add this one. If there is, see if this one is 'newer' or has a 'better' arch.""" name = pkg[rpm.RPMTAG_NAME] arch = pkg[rpm.RPMTAG_ARCH] if not pkgDict.has_key((name, arch)): # nope pkgDict[(name,arch)] = pkg else: # first check version val = rpm.versionCompare(pkgDict[(name,arch)], pkg) if val < 0: # we're newer, add this one pkgDict[(name,arch)] = pkg def comparePackageForUpgrade(updDict, h, pkg): val = rpm.versionCompare(h, pkg) if (val > 0): # dEBUG("found older version of %(name)s %(arch)s" % h) pass elif (val < 0): # dEBUG("found newer version of %(name)s %(arch)s" % h) # check if we already have this package in our dictionary addNewPackageToUpgSet(updDict, pkg) else: # dEBUG("found same verison of %(name)s %(arch)s" % h) pass def findBestArch(archlist): bestarch = None for availarch in archlist: newscore = rpm.archscore(availarch) # unsupported if newscore <= 0: continue # If old arch is better or same if bestarch and rpm.archscore(bestarch) <= newscore: continue # If we get here we're better bestarch = availarch return bestarch def getAvailPackages(hdrlist): # go through and figure out which packages in the header list are # actually applicable for our architecture pkgDict = {} nameDict = {} for h in hdrlist: score1 = rpm.archscore(h[rpm.RPMTAG_ARCH]) if (score1): name = h[rpm.RPMTAG_NAME] arch = h[rpm.RPMTAG_ARCH] pkgDict[(name,arch)] = h if nameDict.has_key(name): nameDict[name].append(arch) else: nameDict[name] = [ arch ] return (pkgDict, nameDict) def getInstalledPackages(dbPath='/'): pkgDict = {} nameDict = {} ts = rpm.TransactionSet(dbPath) ts.setVSFlags(~(rpm.RPMVSF_NORSA|rpm.RPMVSF_NODSA|rpm.RPMVSF_NOMD5)) mi = ts.dbMatch() for h in mi: name = h[rpm.RPMTAG_NAME] arch = h[rpm.RPMTAG_ARCH] pkgDict[(name,arch)] = h if nameDict.has_key(name): nameDict[name].append(arch) else: nameDict[name] = [ arch ] return (pkgDict, nameDict) def findpackageset(hdrlist, dbPath='/'): instDict = {} availDict = {} updDict = {} # dicts for name : [archlist] availNames = {} instNames = {} ts = rpm.TransactionSet(dbPath) ts.setVSFlags(~(rpm.RPMVSF_NORSA|rpm.RPMVSF_NODSA|rpm.RPMVSF_NOMD5)) (availDict, availNames) = getAvailPackages(hdrlist) (instDict, instNames) = getInstalledPackages(dbPath=dbPath) hdlist = availDict.values() # loop through packages and find ones which are a newer # version than what we have for ( name, arch ) in instDict.keys(): if ( name, arch ) in availDict.keys(): # Exact arch upgrade h = instDict[(name, arch)] pkg = availDict[(name,arch)] comparePackageForUpgrade(updDict, h, pkg) else: # See if we have a better arch than that installed if name in availNames.keys(): bestarch = findBestArch(availNames[name]) if not bestarch: continue if availDict.has_key((name,bestarch)): h = instDict[(name,arch)] pkg = availDict[(name,bestarch)] comparePackageForUpgrade(updDict, h, pkg) # handle obsoletes for pkg in hdlist: if (pkg[rpm.RPMTAG_NAME],pkg[rpm.RPMTAG_ARCH]) in updDict.keys(): # dEBUG("%(name)s %(arch)s is already selected" % pkg) continue if pkg[rpm.RPMTAG_OBSOLETENAME] is not None: name = pkg[rpm.RPMTAG_NAME] arch = pkg[rpm.RPMTAG_ARCH] for obs,obsver in zip(pkg[rpm.RPMTAG_OBSOLETENAME],pkg[rpm.RPMTAG_OBSOLETEVERSION]): mi = ts.dbMatch('name', obs) oevr = strToVersion(obsver) for h in mi: if not obsver: # unversioned obsoletes win addNewPackageToUpgSet(updDict, pkg) # dEBUG("adding %(name)s to the upgrade set for obsoletes" % pkg) break else: if h[rpm.RPMTAG_EPOCH] is None: epoch = '0' else: epoch = str(h[rpm.RPMTAG_EPOCH]) val = rpm.labelCompare(oevr,(epoch,h[rpm.RPMTAG_VERSION],h[rpm.RPMTAG_RELEASE])) if val > 0: # dEBUG("adding %(name)s %(version)s to the upgrade set for obsoletes" % pkg) updDict[(name,arch)] = pkg break return updDict.values() def strToVersion(str): """Parse a string such as in obsoleteversion into evr. Gratuitously borrowed from yum str_to_version FIXME: should be implemented in and use rpmUtils""" i = string.find(str, ':') if i != -1: epoch = string.atol(str[:i]) else: epoch = '0' j = string.find(str, '-') if j != -1: if str[i + 1:j] == '': version = None else: version = str[i + 1:j] release = str[j + 1:] else: if str[i + 1:] == '': version = None else: version = str[i + 1:] release = None return (epoch, version, release) if __name__ == "__main__": import sys, os if len(sys.argv) < 2: print "Usage: %s /path/to/tree [rootpath]" %(sys.argv[0],) sys.exit(0) tree = sys.argv[1] if len(sys.argv) >= 3: instPath = sys.argv[2] else: instPath = "/" fd = os.open("%s/%s/base/hdlist" %(tree, productPath), os.O_RDONLY) hdlist = rpm.readHeaderListFromFD(fd) os.close(fd) packages = findpackageset(hdlist, instPath) for pkg in packages: print pkg[rpm.RPMTAG_NAME]