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/**
* \file lib/legacy.c
*/
#include "system.h"
#include <rpm/header.h>
#include <rpm/rpmmacro.h>
#include <rpm/rpmstring.h>
#include <rpm/rpmfi.h>
#include <rpm/rpmds.h>
#include "debug.h"
static int dncmp(const void * a, const void * b)
{
const char *const * first = a;
const char *const * second = b;
return strcmp(*first, *second);
}
static void compressFilelist(Header h)
{
struct rpmtd_s fileNames;
char ** dirNames;
const char ** baseNames;
uint32_t * dirIndexes;
rpm_count_t count;
int xx, i;
int dirIndex = -1;
/*
* This assumes the file list is already sorted, and begins with a
* single '/'. That assumption isn't critical, but it makes things go
* a bit faster.
*/
if (headerIsEntry(h, RPMTAG_DIRNAMES)) {
xx = headerDel(h, RPMTAG_OLDFILENAMES);
return; /* Already converted. */
}
if (!headerGet(h, RPMTAG_OLDFILENAMES, &fileNames, HEADERGET_MINMEM))
return;
count = rpmtdCount(&fileNames);
if (count < 1)
return;
dirNames = xmalloc(sizeof(*dirNames) * count); /* worst case */
baseNames = xmalloc(sizeof(*dirNames) * count);
dirIndexes = xmalloc(sizeof(*dirIndexes) * count);
/* HACK. Source RPM, so just do things differently */
{ const char *fn = rpmtdGetString(&fileNames);
if (fn && *fn != '/') {
dirIndex = 0;
dirNames[dirIndex] = xstrdup("");
while ((i = rpmtdNext(&fileNames)) >= 0) {
dirIndexes[i] = dirIndex;
baseNames[i] = rpmtdGetString(&fileNames);
}
goto exit;
}
}
while ((i = rpmtdNext(&fileNames)) >= 0) {
char ** needle;
char savechar;
char * baseName;
size_t len;
const char *filename = rpmtdGetString(&fileNames);
if (filename == NULL) /* XXX can't happen */
continue;
baseName = strrchr(filename, '/') + 1;
len = baseName - filename;
needle = dirNames;
savechar = *baseName;
*baseName = '\0';
if (dirIndex < 0 ||
(needle = bsearch(&filename, dirNames, dirIndex + 1, sizeof(dirNames[0]), dncmp)) == NULL) {
char *s = xmalloc(len + 1);
rstrlcpy(s, filename, len + 1);
dirIndexes[i] = ++dirIndex;
dirNames[dirIndex] = s;
} else
dirIndexes[i] = needle - dirNames;
*baseName = savechar;
baseNames[i] = baseName;
}
exit:
if (count > 0) {
headerPutUint32(h, RPMTAG_DIRINDEXES, dirIndexes, count);
headerPutStringArray(h, RPMTAG_BASENAMES, baseNames, count);
headerPutStringArray(h, RPMTAG_DIRNAMES,
(const char **) dirNames, dirIndex + 1);
}
rpmtdFreeData(&fileNames);
for (i = 0; i <= dirIndex; i++) {
free(dirNames[i]);
}
free(dirNames);
free(baseNames);
free(dirIndexes);
xx = headerDel(h, RPMTAG_OLDFILENAMES);
}
static void expandFilelist(Header h)
{
struct rpmtd_s filenames;
if (!headerIsEntry(h, RPMTAG_OLDFILENAMES)) {
(void) headerGet(h, RPMTAG_FILENAMES, &filenames, HEADERGET_EXT);
if (rpmtdCount(&filenames) < 1)
return;
rpmtdSetTag(&filenames, RPMTAG_OLDFILENAMES);
headerPut(h, &filenames, HEADERPUT_DEFAULT);
rpmtdFreeData(&filenames);
}
(void) headerDel(h, RPMTAG_DIRNAMES);
(void) headerDel(h, RPMTAG_BASENAMES);
(void) headerDel(h, RPMTAG_DIRINDEXES);
}
/*
* Up to rpm 3.0.4, packages implicitly provided their own name-version-release.
* Retrofit an explicit "Provides: name = epoch:version-release.
*/
static void providePackageNVR(Header h)
{
const char *name;
char *pEVR;
rpmsenseFlags pFlags = RPMSENSE_EQUAL;
int bingo = 1;
struct rpmtd_s pnames;
rpmds hds, nvrds;
/* Generate provides for this package name-version-release. */
pEVR = headerGetEVR(h, &name);
if (!(name && pEVR))
return;
/*
* Rpm prior to 3.0.3 does not have versioned provides.
* If no provides at all are available, we can just add.
*/
if (!headerGet(h, RPMTAG_PROVIDENAME, &pnames, HEADERGET_MINMEM)) {
goto exit;
}
/*
* Otherwise, fill in entries on legacy packages.
*/
if (!headerIsEntry(h, RPMTAG_PROVIDEVERSION)) {
while (rpmtdNext(&pnames) >= 0) {
rpmsenseFlags fdummy = RPMSENSE_ANY;
headerPutString(h, RPMTAG_PROVIDEVERSION, "");
headerPutUint32(h, RPMTAG_PROVIDEFLAGS, &fdummy, 1);
}
goto exit;
}
/* see if we already have this provide */
hds = rpmdsNew(h, RPMTAG_PROVIDENAME, 1);
nvrds = rpmdsSingle(RPMTAG_PROVIDENAME, name, pEVR, pFlags);
if (rpmdsFind(hds, nvrds) >= 0) {
bingo = 0;
}
rpmdsFree(hds);
rpmdsFree(nvrds);
exit:
if (bingo) {
const char *evr = pEVR;
headerPutString(h, RPMTAG_PROVIDENAME, name);
headerPutString(h, RPMTAG_PROVIDEVERSION, evr);
headerPutUint32(h, RPMTAG_PROVIDEFLAGS, &pFlags, 1);
}
rpmtdFreeData(&pnames);
free(pEVR);
}
static void legacyRetrofit(Header h)
{
struct rpmtd_s dprefix;
/*
* We don't use these entries (and rpm >= 2 never has) and they are
* pretty misleading. Let's just get rid of them so they don't confuse
* anyone.
*/
if (headerIsEntry(h, RPMTAG_FILEUSERNAME))
(void) headerDel(h, RPMTAG_FILEUIDS);
if (headerIsEntry(h, RPMTAG_FILEGROUPNAME))
(void) headerDel(h, RPMTAG_FILEGIDS);
/*
* We switched the way we do relocatable packages. We fix some of
* it up here, though the install code still has to be a bit
* careful. This fixup makes queries give the new values though,
* which is quite handy.
*/
if (headerGet(h, RPMTAG_DEFAULTPREFIX, &dprefix, HEADERGET_MINMEM)) {
const char *prefix = rpmtdGetString(&dprefix);
char * nprefix = stripTrailingChar(xstrdup(prefix), '/');
headerPutString(h, RPMTAG_PREFIXES, nprefix);
free(nprefix);
rpmtdFreeData(&dprefix);
}
/*
* The file list was moved to a more compressed format which not
* only saves memory (nice), but gives fingerprinting a nice, fat
* speed boost (very nice). Go ahead and convert old headers to
* the new style (this is a noop for new headers).
*/
compressFilelist(h);
/* XXX binary rpms always have RPMTAG_SOURCERPM, source rpms do not */
if (headerIsSource(h)) {
uint32_t one = 1;
if (!headerIsEntry(h, RPMTAG_SOURCEPACKAGE))
headerPutUint32(h, RPMTAG_SOURCEPACKAGE, &one, 1);
} else {
/* Retrofit "Provide: name = EVR" for binary packages. */
providePackageNVR(h);
}
}
int headerConvert(Header h, headerConvOps op)
{
int rc = 1;
if (h == NULL)
return 0;
switch (op) {
case HEADERCONV_EXPANDFILELIST:
expandFilelist(h);
break;
case HEADERCONV_COMPRESSFILELIST:
compressFilelist(h);
break;
case HEADERCONV_RETROFIT_V3:
legacyRetrofit(h);
break;
default:
rc = 0;
break;
}
return rc;
};
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