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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;
}
}
/*
* XXX EVIL HACK, FIXME:
* This modifies (and then restores) a const string from rpmtd
* through basename retrieved from strrchr() which silently
* casts away const on return.
*/
while ((i = rpmtdNext(&fileNames)) >= 0) {
char ** needle;
char savechar;
char * baseName;
size_t len;
char *filename = (char *) rpmtdGetString(&fileNames); /* HACK HACK */
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 = headerGetString(h, RPMTAG_NAME);
char *pEVR = headerGetAsString(h, RPMTAG_EVR);
rpmsenseFlags pFlags = RPMSENSE_EQUAL;
int bingo = 1;
struct rpmtd_s pnames;
rpmds hds, nvrds;
/* Generate provides for this package name-version-release. */
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, 0);
nvrds = rpmdsSingle(RPMTAG_PROVIDENAME, name, pEVR, pFlags);
if (rpmdsFind(hds, nvrds) >= 0) {
bingo = 0;
}
rpmdsFree(hds);
rpmdsFree(nvrds);
exit:
if (bingo) {
headerPutString(h, RPMTAG_PROVIDENAME, name);
headerPutString(h, RPMTAG_PROVIDEVERSION, pEVR);
headerPutUint32(h, RPMTAG_PROVIDEFLAGS, &pFlags, 1);
}
rpmtdFreeData(&pnames);
free(pEVR);
}
static void legacyRetrofit(Header h)
{
/*
* 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);
/* Retrofit "Provide: name = EVR" for binary packages. */
if (!headerIsSource(h)) {
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;
};
/*
* Backwards compatibility wrappers for legacy interfaces.
* Remove these some day...
*/
#define _RPM_4_4_COMPAT
#include <rpm/rpmlegacy.h>
/* dumb macro to avoid 50 copies of this code while converting... */
#define TDWRAP() \
if (type) \
*type = td.type; \
if (p) \
*p = td.data; \
else \
rpmtdFreeData(&td); \
if (c) \
*c = td.count
int headerRemoveEntry(Header h, rpm_tag_t tag)
{
return headerDel(h, tag);
}
static void *_headerFreeData(rpm_data_t data, rpm_tagtype_t type)
{
if (data) {
if (type == RPM_FORCEFREE_TYPE ||
type == RPM_STRING_ARRAY_TYPE ||
type == RPM_I18NSTRING_TYPE ||
type == RPM_BIN_TYPE)
free(data);
}
return NULL;
}
void * headerFreeData(rpm_data_t data, rpm_tagtype_t type)
{
return _headerFreeData(data, type);
}
void * headerFreeTag(Header h, rpm_data_t data, rpm_tagtype_t type)
{
return _headerFreeData(data, type);
}
static int headerGetWrap(Header h, rpm_tag_t tag,
rpm_tagtype_t * type,
rpm_data_t * p,
rpm_count_t * c,
headerGetFlags flags)
{
struct rpmtd_s td;
int rc;
rc = headerGet(h, tag, &td, flags);
TDWRAP();
return rc;
}
int headerGetEntry(Header h, rpm_tag_t tag,
rpm_tagtype_t * type,
rpm_data_t * p,
rpm_count_t * c)
{
return headerGetWrap(h, tag, type, p, c, HEADERGET_DEFAULT);
}
int headerGetEntryMinMemory(Header h, rpm_tag_t tag,
rpm_tagtype_t * type,
rpm_data_t * p,
rpm_count_t * c)
{
return headerGetWrap(h, tag, type, (rpm_data_t) p, c, HEADERGET_MINMEM);
}
/* XXX shut up compiler warning from missing prototype */
int headerGetRawEntry(Header h, rpm_tag_t tag, rpm_tagtype_t * type, rpm_data_t * p,
rpm_count_t * c);
int headerGetRawEntry(Header h, rpm_tag_t tag, rpm_tagtype_t * type, rpm_data_t * p,
rpm_count_t * c)
{
if (p == NULL)
return headerIsEntry(h, tag);
return headerGetWrap(h, tag, type, p, c, HEADERGET_RAW);
}
int headerNextIterator(HeaderIterator hi,
rpm_tag_t * tag,
rpm_tagtype_t * type,
rpm_data_t * p,
rpm_count_t * c)
{
struct rpmtd_s td;
int rc;
rc = headerNext(hi, &td);
if (tag)
*tag = td.tag;
TDWRAP();
return rc;
}
int headerModifyEntry(Header h, rpm_tag_t tag, rpm_tagtype_t type,
rpm_constdata_t p, rpm_count_t c)
{
struct rpmtd_s td = {
.tag = tag,
.type = type,
.data = (void *) p,
.count = c,
};
return headerMod(h, &td);
}
static int headerPutWrap(Header h, rpm_tag_t tag, rpm_tagtype_t type,
rpm_constdata_t p, rpm_count_t c, headerPutFlags flags)
{
struct rpmtd_s td = {
.tag = tag,
.type = type,
.data = (void *) p,
.count = c,
};
return headerPut(h, &td, flags);
}
int headerAddOrAppendEntry(Header h, rpm_tag_t tag, rpm_tagtype_t type,
rpm_constdata_t p, rpm_count_t c)
{
return headerPutWrap(h, tag, type, p, c, HEADERPUT_APPEND);
}
int headerAppendEntry(Header h, rpm_tag_t tag, rpm_tagtype_t type,
rpm_constdata_t p, rpm_count_t c)
{
return headerPutWrap(h, tag, type, p, c, HEADERPUT_APPEND);
}
int headerAddEntry(Header h, rpm_tag_t tag, rpm_tagtype_t type,
rpm_constdata_t p, rpm_count_t c)
{
return headerPutWrap(h, tag, type, p, c, HEADERPUT_DEFAULT);
}
#undef _RPM_4_4_COMPAT
|