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header.c
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/** \ingroup header
* \file lib/header.c
*/
/* RPM - Copyright (C) 1995-2002 Red Hat Software */
/* Data written to file descriptors is in network byte order. */
/* Data read from file descriptors is expected to be in */
/* network byte order and is converted on the fly to host order. */
#include "system.h"
#include <netdb.h>
#include <errno.h>
#include <rpm/rpmtypes.h>
#include <rpm/rpmstring.h>
#include "lib/header_internal.h"
#include "lib/misc.h" /* tag function proto */
#include "debug.h"
/** \ingroup header
*/
const unsigned char rpm_header_magic[8] = {
0x8e, 0xad, 0xe8, 0x01, 0x00, 0x00, 0x00, 0x00
};
/** \ingroup header
* Alignment needed for header data types.
*/
static const int typeAlign[16] = {
1, /*!< RPM_NULL_TYPE */
1, /*!< RPM_CHAR_TYPE */
1, /*!< RPM_INT8_TYPE */
2, /*!< RPM_INT16_TYPE */
4, /*!< RPM_INT32_TYPE */
8, /*!< RPM_INT64_TYPE */
1, /*!< RPM_STRING_TYPE */
1, /*!< RPM_BIN_TYPE */
1, /*!< RPM_STRING_ARRAY_TYPE */
1, /*!< RPM_I18NSTRING_TYPE */
0,
0,
0,
0,
0,
0
};
/** \ingroup header
* Size of header data types.
*/
static const int typeSizes[16] = {
0, /*!< RPM_NULL_TYPE */
1, /*!< RPM_CHAR_TYPE */
1, /*!< RPM_INT8_TYPE */
2, /*!< RPM_INT16_TYPE */
4, /*!< RPM_INT32_TYPE */
8, /*!< RPM_INT64_TYPE */
-1, /*!< RPM_STRING_TYPE */
1, /*!< RPM_BIN_TYPE */
-1, /*!< RPM_STRING_ARRAY_TYPE */
-1, /*!< RPM_I18NSTRING_TYPE */
0,
0,
0,
0,
0,
0
};
enum headerFlags_e {
HEADERFLAG_ALLOCATED = (1 << 1), /*!< Is 1st header region allocated? */
HEADERFLAG_LEGACY = (1 << 2), /*!< Header came from legacy source? */
HEADERFLAG_DEBUG = (1 << 3), /*!< Debug this header? */
};
typedef rpmFlags headerFlags;
/** \ingroup header
* A single tag from a Header.
*/
typedef struct indexEntry_s * indexEntry;
struct indexEntry_s {
struct entryInfo_s info; /*!< Description of tag data. */
rpm_data_t data; /*!< Location of tag data. */
int length; /*!< No. bytes of data. */
int rdlen; /*!< No. bytes of data in region. */
};
/** \ingroup header
* The Header data structure.
*/
struct headerToken_s {
void * blob; /*!< Header region blob. */
indexEntry index; /*!< Array of tags. */
int indexUsed; /*!< Current size of tag array. */
int indexAlloced; /*!< Allocated size of tag array. */
unsigned int instance; /*!< Rpmdb instance (offset) */
headerFlags flags;
int sorted; /*!< Current sort method */
int nrefs; /*!< Reference count. */
};
/** \ingroup header
* Maximum no. of bytes permitted in a header.
*/
static const size_t headerMaxbytes = (256*1024*1024);
#define INDEX_MALLOC_SIZE 8
#define ENTRY_IS_REGION(_e) \
(((_e)->info.tag >= RPMTAG_HEADERIMAGE) && ((_e)->info.tag < RPMTAG_HEADERREGIONS))
#define ENTRY_IN_REGION(_e) ((_e)->info.offset < 0)
#define REGION_TAG_TYPE RPM_BIN_TYPE
#define REGION_TAG_COUNT sizeof(struct entryInfo_s)
/**
* Sanity check on no. of tags.
* This check imposes a limit of 65K tags, more than enough.
*/
#define HEADER_TAGS_MAX 0x0000ffff
#define hdrchkTags(_ntags) ((_ntags) & (~HEADER_TAGS_MAX))
/**
* Sanity check on tag values.
* Catches out nasties like negative values and multiple regions.
**/
#define hdrchkTag(_tag) ((_tag) < HEADER_I18NTABLE)
/**
* Sanity check on type values.
*/
#define hdrchkType(_type) ((_type) < RPM_MIN_TYPE || (_type) > RPM_MAX_TYPE)
/**
* Sanity check on data size and/or offset and/or count.
* This check imposes a limit of 256 MB -- file signatures
* may require a lot of space in the header.
*/
#define HEADER_DATA_MAX 0x0fffffff
#define hdrchkData(_nbytes) ((_nbytes) & (~HEADER_DATA_MAX))
/**
* Sanity check on data alignment for data type.
*/
#define hdrchkAlign(_type, _off) ((_off) & (typeAlign[_type]-1))
/**
* Sanity check on range of data offset.
*/
#define hdrchkRange(_dl, _off) ((_off) < 0 || (_off) > (_dl))
static int dataLength(rpm_tagtype_t type, rpm_constdata_t p, rpm_count_t count,
int onDisk, rpm_constdata_t pend);
/* Check tag type matches our definition */
static int hdrchkTagType(rpm_tag_t tag, rpm_tagtype_t type)
{
rpmTagType t = rpmTagGetTagType(tag);
if (t == type)
return 0;
/* Permit unknown tags for forward compatibility */
if (t == RPM_NULL_TYPE)
return 0;
/* Some string tags harmlessly disagree on the exact type */
if (rpmTagGetClass(tag) == RPM_STRING_CLASS &&
(rpmTagTypeGetClass(type) == RPM_STRING_CLASS))
return 0;
/* Known tag with mismatching type, bad bad bad. */
return 1;
}
#ifndef htonll
/* Convert a 64bit value to network byte order. */
RPM_GNUC_CONST
static uint64_t htonll(uint64_t n)
{
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
uint32_t *i = (uint32_t*)&n;
uint32_t b = i[0];
i[0] = htonl(i[1]);
i[1] = htonl(b);
#endif
return n;
}
#endif
Header headerLink(Header h)
{
if (h != NULL)
h->nrefs++;
return h;
}
static Header headerUnlink(Header h)
{
if (h != NULL)
h->nrefs--;
return NULL;
}
Header headerFree(Header h)
{
(void) headerUnlink(h);
if (h == NULL || h->nrefs > 0)
return NULL;
if (h->index) {
indexEntry entry = h->index;
int i;
for (i = 0; i < h->indexUsed; i++, entry++) {
if ((h->flags & HEADERFLAG_ALLOCATED) && ENTRY_IS_REGION(entry)) {
if (entry->length > 0) {
int32_t * ei = entry->data;
if ((ei - 2) == h->blob) h->blob = _free(h->blob);
entry->data = NULL;
}
} else if (!ENTRY_IN_REGION(entry)) {
entry->data = _free(entry->data);
}
entry->data = NULL;
}
h->index = _free(h->index);
}
h = _free(h);
return NULL;
}
static Header headerCreate(void *blob, int32_t indexLen)
{
Header h = xcalloc(1, sizeof(*h));
if (blob) {
h->blob = blob;
h->indexAlloced = indexLen + 1;
h->indexUsed = indexLen;
} else {
h->indexAlloced = INDEX_MALLOC_SIZE;
h->indexUsed = 0;
}
h->instance = 0;
h->sorted = 0;
h->index = xcalloc(h->indexAlloced, sizeof(*h->index));
h->nrefs = 0;
return headerLink(h);
}
Header headerNew(void)
{
return headerCreate(NULL, 0);
}
static rpmRC hdrblobVerifyInfo(hdrblob blob, char **emsg)
{
struct entryInfo_s info;
int i, len = 0;
int32_t end = 0;
const char *ds = (const char *) blob->dataStart;
int32_t il = (blob->regionTag) ? blob->il-1 : blob->il;
entryInfo pe = (blob->regionTag) ? blob->pe+1 : blob->pe;
/* Can't typecheck signature header tags, sigh */
int typechk = (blob->regionTag == RPMTAG_HEADERIMMUTABLE ||
blob->regionTag == RPMTAG_HEADERIMAGE);
for (i = 0; i < il; i++) {
ei2h(&pe[i], &info);
/* Previous data must not overlap */
if (end > info.offset)
goto err;
if (hdrchkTag(info.tag))
goto err;
if (hdrchkType(info.type))
goto err;
if (hdrchkAlign(info.type, info.offset))
goto err;
if (hdrchkRange(blob->dl, info.offset))
goto err;
if (typechk && hdrchkTagType(info.tag, info.type))
goto err;
/* Verify the data actually fits */
len = dataLength(info.type, ds + info.offset,
info.count, 1, ds + blob->dl);
end = info.offset + len;
if (hdrchkRange(blob->dl, end) || len <= 0)
goto err;
}
return 0; /* Everything ok */
err:
if (emsg) {
rasprintf(emsg,
_("tag[%d]: BAD, tag %d type %d offset %d count %d len %d"),
i, info.tag, info.type, info.offset, info.count, len);
}
return i + 1;
}
static int indexCmp(const void * avp, const void * bvp)
{
indexEntry ap = (indexEntry) avp, bp = (indexEntry) bvp;
return (ap->info.tag - bp->info.tag);
}
static void headerSort(Header h)
{
if (!h->sorted) {
qsort(h->index, h->indexUsed, sizeof(*h->index), indexCmp);
h->sorted = 1;
}
}
static int offsetCmp(const void * avp, const void * bvp)
{
indexEntry ap = (indexEntry) avp, bp = (indexEntry) bvp;
int rc = (ap->info.offset - bp->info.offset);
if (rc == 0) {
/* Within a region, entries sort by address. Added drips sort by tag. */
if (ap->info.offset < 0)
rc = (((char *)ap->data) - ((char *)bp->data));
else
rc = (ap->info.tag - bp->info.tag);
}
return rc;
}
static inline unsigned int alignDiff(rpm_tagtype_t type, unsigned int alignsize)
{
int typesize = typeSizes[type];
if (typesize > 1) {
unsigned int diff = typesize - (alignsize % typesize);
if (diff != typesize)
return diff;
}
return 0;
}
unsigned headerSizeof(Header h, int magicp)
{
indexEntry entry;
unsigned int size = 0;
int i;
if (h == NULL)
return size;
headerSort(h);
if (magicp == HEADER_MAGIC_YES)
size += sizeof(rpm_header_magic);
size += 2 * sizeof(int32_t); /* count of index entries */
for (i = 0, entry = h->index; i < h->indexUsed; i++, entry++) {
/* Regions go in as is ... */
if (ENTRY_IS_REGION(entry)) {
size += entry->length;
/* Reserve space for legacy region tag + data */
if (i == 0 && (h->flags & HEADERFLAG_LEGACY))
size += sizeof(struct entryInfo_s) + entry->info.count;
continue;
}
/* ... and region elements are skipped. */
if (entry->info.offset < 0)
continue;
/* Alignment */
size += alignDiff(entry->info.type, size);
size += sizeof(struct entryInfo_s) + entry->length;
}
return size;
}
/*
* Header string (array) size calculation, bounded if end is non-NULL.
* Return length (including \0 termination) on success, -1 on error.
*/
static inline int strtaglen(const char *str, rpm_count_t c, const char *end)
{
const char *start = str;
const char *s;
if (end) {
if (str >= end)
return -1;
while ((s = memchr(start, '\0', end-start))) {
if (--c == 0 || s > end)
break;
start = s + 1;
}
} else {
while ((s = strchr(start, '\0'))) {
if (--c == 0)
break;
start = s + 1;
}
}
return (c > 0) ? -1 : (s - str + 1);
}
/**
* Return length of entry data.
* @param type entry data type
* @param p entry data
* @param count entry item count
* @param onDisk data is concatenated strings (with NUL's))?
* @param pend pointer to end of data (or NULL)
* @return no. bytes in data, -1 on failure
*/
static int dataLength(rpm_tagtype_t type, rpm_constdata_t p, rpm_count_t count,
int onDisk, rpm_constdata_t pend)
{
const char * s = p;
const char * se = pend;
int length = 0;
switch (type) {
case RPM_STRING_TYPE:
if (count != 1)
return -1;
length = strtaglen(s, 1, se);
break;
case RPM_STRING_ARRAY_TYPE:
case RPM_I18NSTRING_TYPE:
/* These are like RPM_STRING_TYPE, except they're *always* an array */
/* Compute sum of length of all strings, including nul terminators */
if (onDisk) {
length = strtaglen(s, count, se);
} else {
const char ** av = (const char **)p;
while (count--) {
/* add one for null termination */
length += strlen(*av++) + 1;
}
}
break;
default:
if (typeSizes[type] == -1)
return -1;
length = typeSizes[(type & 0xf)] * count;
if (length < 0 || (se && (s + length) > se))
return -1;
break;
}
return length;
}
/** \ingroup header
* Swap int32_t and int16_t arrays within header region.
*
* If a header region tag is in the set to be swabbed, as the data for a
* a header region is located after all other tag data.
*
* @param entry header entry
* @param il no. of entries
* @param dl start no. bytes of data
* @param pe header physical entry pointer (swapped)
* @param dataStart header data start
* @param dataEnd header data end
* @param regionid region offset
* @param fast use offsets for data sizes if possible
* @return no. bytes of data in region, -1 on error
*/
static int regionSwab(indexEntry entry, int il, int dl,
entryInfo pe,
unsigned char * dataStart,
const unsigned char * dataEnd,
int regionid, int fast)
{
if ((entry != NULL && regionid >= 0) || (entry == NULL && regionid != 0))
return -1;
for (; il > 0; il--, pe++) {
struct indexEntry_s ie;
ei2h(pe, &ie.info);
if (hdrchkType(ie.info.type))
return -1;
if (hdrchkData(ie.info.count))
return -1;
if (hdrchkData(ie.info.offset))
return -1;
if (hdrchkAlign(ie.info.type, ie.info.offset))
return -1;
ie.data = dataStart + ie.info.offset;
if (dataEnd && (unsigned char *)ie.data >= dataEnd)
return -1;
/* The offset optimization is only relevant for string types */
if (fast && il > 1 && typeSizes[ie.info.type] == -1) {
ie.length = ntohl(pe[1].offset) - ie.info.offset;
} else {
ie.length = dataLength(ie.info.type, ie.data, ie.info.count,
1, dataEnd);
}
if (ie.length < 0 || hdrchkData(ie.length))
return -1;
ie.rdlen = 0;
if (entry) {
ie.info.offset = regionid;
*entry = ie; /* structure assignment */
entry++;
}
/* Alignment */
dl += alignDiff(ie.info.type, dl);
/* Perform endian conversions */
switch (ntohl(pe->type)) {
case RPM_INT64_TYPE:
{ uint64_t * it = ie.data;
for (; ie.info.count > 0; ie.info.count--, it += 1) {
if (dataEnd && ((unsigned char *)it) >= dataEnd)
return -1;
*it = htonll(*it);
}
} break;
case RPM_INT32_TYPE:
{ int32_t * it = ie.data;
for (; ie.info.count > 0; ie.info.count--, it += 1) {
if (dataEnd && ((unsigned char *)it) >= dataEnd)
return -1;
*it = htonl(*it);
}
} break;
case RPM_INT16_TYPE:
{ int16_t * it = ie.data;
for (; ie.info.count > 0; ie.info.count--, it += 1) {
if (dataEnd && ((unsigned char *)it) >= dataEnd)
return -1;
*it = htons(*it);
}
} break;
}
dl += ie.length;
}
return dl;
}
static void * doExport(const struct indexEntry_s *hindex, int indexUsed,
headerFlags flags, unsigned int *bsize)
{
int32_t * ei = NULL;
entryInfo pe;
char * dataStart;
char * te;
unsigned len, diff;
int32_t il = 0;
int32_t dl = 0;
indexEntry entry;
int i;
int drlen, ndribbles;
size_t ilen = indexUsed * sizeof(struct indexEntry_s);
indexEntry index = memcpy(xmalloc(ilen), hindex, ilen);
/* Sort entries by (offset,tag). */
qsort(index, indexUsed, sizeof(*index), offsetCmp);
/* Compute (il,dl) for all tags, including those deleted in region. */
drlen = ndribbles = 0;
for (i = 0, entry = index; i < indexUsed; i++, entry++) {
if (ENTRY_IS_REGION(entry)) {
int32_t rdl = -entry->info.offset; /* negative offset */
int32_t ril = rdl/sizeof(*pe);
int rid = entry->info.offset;
il += ril;
dl += entry->rdlen + entry->info.count;
/* Reserve space for legacy region tag */
if (i == 0 && (flags & HEADERFLAG_LEGACY))
il += 1;
/* Skip rest of entries in region, but account for dribbles. */
for (; i < indexUsed && entry->info.offset <= rid+1; i++, entry++) {
if (entry->info.offset <= rid)
continue;
/* Alignment */
diff = alignDiff(entry->info.type, dl);
if (diff) {
drlen += diff;
dl += diff;
}
ndribbles++;
il++;
drlen += entry->length;
dl += entry->length;
}
i--;
entry--;
continue;
}
/* Ignore deleted drips. */
if (entry->data == NULL || entry->length <= 0)
continue;
/* Alignment */
dl += alignDiff(entry->info.type, dl);
il++;
dl += entry->length;
}
/* Sanity checks on header intro. */
if (hdrchkTags(il) || hdrchkData(dl))
goto errxit;
len = sizeof(il) + sizeof(dl) + (il * sizeof(*pe)) + dl;
ei = xmalloc(len);
ei[0] = htonl(il);
ei[1] = htonl(dl);
pe = (entryInfo) &ei[2];
dataStart = te = (char *) (pe + il);
for (i = 0, entry = index; i < indexUsed; i++, entry++) {
const char * src;
unsigned char *t;
int count;
int rdlen;
unsigned int diff;
if (entry->data == NULL || entry->length <= 0)
continue;
t = (unsigned char*)te;
pe->tag = htonl(entry->info.tag);
pe->type = htonl(entry->info.type);
pe->count = htonl(entry->info.count);
if (ENTRY_IS_REGION(entry)) {
int32_t rdl = -entry->info.offset; /* negative offset */
int32_t ril = rdl/sizeof(*pe) + ndribbles;
int rid = entry->info.offset;
src = (char *)entry->data;
rdlen = entry->rdlen;
/* Legacy headers don't have regions originally, create one */
if (i == 0 && (flags & HEADERFLAG_LEGACY)) {
int32_t stei[4];
memcpy(pe+1, src, rdl);
memcpy(te, src + rdl, rdlen);
te += rdlen;
pe->offset = htonl(te - dataStart);
stei[0] = pe->tag;
stei[1] = pe->type;
stei[2] = htonl(-rdl-entry->info.count);
stei[3] = pe->count;
memcpy(te, stei, entry->info.count);
te += entry->info.count;
ril++;
rdlen += entry->info.count;
count = regionSwab(NULL, ril, 0, pe, t, NULL, 0, 0);
if (count != rdlen)
goto errxit;
} else {
memcpy(pe+1, src + sizeof(*pe), ((ril-1) * sizeof(*pe)));
memcpy(te, src + (ril * sizeof(*pe)), rdlen+entry->info.count+drlen);
te += rdlen;
{
entryInfo se = (entryInfo)src;
int off = ntohl(se->offset);
pe->offset = (off) ? htonl(te - dataStart) : htonl(off);
}
te += entry->info.count + drlen;
count = regionSwab(NULL, ril, 0, pe, t, NULL, 0, 0);
if (count != (rdlen + entry->info.count + drlen))
goto errxit;
}
/* Skip rest of entries in region. */
while (i < indexUsed && entry->info.offset <= rid+1) {
i++;
entry++;
}
i--;
entry--;
pe += ril;
continue;
}
/* Ignore deleted drips. */
if (entry->data == NULL || entry->length <= 0)
continue;
/* Alignment */
diff = alignDiff(entry->info.type, (te - dataStart));
if (diff) {
memset(te, 0, diff);
te += diff;
}
pe->offset = htonl(te - dataStart);
/* copy data w/ endian conversions */
switch (entry->info.type) {
case RPM_INT64_TYPE:
count = entry->info.count;
src = entry->data;
while (count--) {
*((uint64_t *)te) = htonll(*((uint64_t *)src));
te += sizeof(uint64_t);
src += sizeof(uint64_t);
}
break;
case RPM_INT32_TYPE:
count = entry->info.count;
src = entry->data;
while (count--) {
*((int32_t *)te) = htonl(*((int32_t *)src));
te += sizeof(int32_t);
src += sizeof(int32_t);
}
break;
case RPM_INT16_TYPE:
count = entry->info.count;
src = entry->data;
while (count--) {
*((int16_t *)te) = htons(*((int16_t *)src));
te += sizeof(int16_t);
src += sizeof(int16_t);
}
break;
default:
memcpy(te, entry->data, entry->length);
te += entry->length;
break;
}
pe++;
}
/* Insure that there are no memcpy underruns/overruns. */
if (((char *)pe) != dataStart)
goto errxit;
if ((((char *)ei)+len) != te)
goto errxit;
if (bsize)
*bsize = len;
free(index);
return (void *) ei;
errxit:
free(ei);
free(index);
return NULL;
}
void * headerExport(Header h, unsigned int *bsize)
{
void *blob = NULL;
if (h) {
blob = doExport(h->index, h->indexUsed, h->flags, bsize);
}
return blob;
}
void * headerUnload(Header h)
{
return headerExport(h, NULL);
}
/**
* Find matching (tag,type) entry in header.
* @param h header
* @param tag entry tag
* @param type entry type
* @return header entry
*/
static
indexEntry findEntry(Header h, rpmTagVal tag, rpm_tagtype_t type)
{
indexEntry entry;
struct indexEntry_s key;
if (h == NULL) return NULL;
headerSort(h);
key.info.tag = tag;
entry = bsearch(&key, h->index, h->indexUsed, sizeof(*h->index), indexCmp);
if (entry == NULL)
return NULL;
if (type == RPM_NULL_TYPE)
return entry;
/* look backwards */
while (entry->info.tag == tag && entry->info.type != type &&
entry > h->index) entry--;
if (entry->info.tag == tag && entry->info.type == type)
return entry;
return NULL;
}
int headerDel(Header h, rpmTagVal tag)
{
indexEntry last = h->index + h->indexUsed;
indexEntry entry, first;
int ne;
entry = findEntry(h, tag, RPM_NULL_TYPE);
if (!entry) return 1;
/* Make sure entry points to the first occurrence of this tag. */
while (entry > h->index && (entry - 1)->info.tag == tag)
entry--;
/* Free data for tags being removed. */
for (first = entry; first < last; first++) {
rpm_data_t data;
if (first->info.tag != tag)
break;
data = first->data;
first->data = NULL;
first->length = 0;
if (ENTRY_IN_REGION(first))
continue;
free(data);
}
ne = (first - entry);
if (ne > 0) {
h->indexUsed -= ne;
ne = last - first;
if (ne > 0)
memmove(entry, first, (ne * sizeof(*entry)));
}
return 0;
}
rpmRC hdrblobImport(hdrblob blob, int fast, Header *hdrp, char **emsg)
{
Header h = NULL;
indexEntry entry;
int rdlen;
h = headerCreate(blob->ei, blob->il);
entry = h->index;
if (!(htonl(blob->pe->tag) < RPMTAG_HEADERI18NTABLE)) {
/* An original v3 header, create a legacy region entry for it */
h->flags |= HEADERFLAG_LEGACY;
entry->info.type = REGION_TAG_TYPE;
entry->info.tag = RPMTAG_HEADERIMAGE;
entry->info.count = REGION_TAG_COUNT;
entry->info.offset = ((unsigned char *)blob->pe - blob->dataStart); /* negative offset */
entry->data = blob->pe;
entry->length = blob->pvlen - sizeof(blob->il) - sizeof(blob->dl);
rdlen = regionSwab(entry+1, blob->il, 0, blob->pe,
blob->dataStart, blob->dataEnd,
entry->info.offset, fast);
if (rdlen != blob->dl)
goto errxit;
entry->rdlen = rdlen;
h->indexUsed++;
} else {
/* Either a v4 header or an "upgraded" v3 header with a legacy region */
int32_t ril;
h->flags &= ~HEADERFLAG_LEGACY;
ei2h(blob->pe, &entry->info);
ril = (entry->info.offset != 0) ? blob->ril : blob->il;
entry->info.offset = -(ril * sizeof(*blob->pe)); /* negative offset */
entry->data = blob->pe;
entry->length = blob->pvlen - sizeof(blob->il) - sizeof(blob->dl);
rdlen = regionSwab(entry+1, ril-1, 0, blob->pe+1,
blob->dataStart, blob->dataEnd,
entry->info.offset, fast);
if (rdlen < 0)
goto errxit;
entry->rdlen = rdlen;
if (ril < h->indexUsed) {
indexEntry newEntry = entry + ril;
int ne = (h->indexUsed - ril);
int rid = entry->info.offset+1;
/* Load dribble entries from region. */
rdlen = regionSwab(newEntry, ne, rdlen, blob->pe+ril,
blob->dataStart, blob->dataEnd, rid, fast);
if (rdlen < 0)
goto errxit;
{ indexEntry firstEntry = newEntry;
int save = h->indexUsed;
int j;
/* Dribble entries replace duplicate region entries. */
h->indexUsed -= ne;
for (j = 0; j < ne; j++, newEntry++) {
(void) headerDel(h, newEntry->info.tag);
if (newEntry->info.tag == RPMTAG_BASENAMES)
(void) headerDel(h, RPMTAG_OLDFILENAMES);
}
/* If any duplicate entries were replaced, move new entries down. */
if (h->indexUsed < (save - ne)) {
memmove(h->index + h->indexUsed, firstEntry,
(ne * sizeof(*entry)));
}
h->indexUsed += ne;
}
}
rdlen += REGION_TAG_COUNT;
if (rdlen != blob->dl)
goto errxit;
}
/* Force sorting, dribble lookups can cause early sort on partial header */
h->sorted = 0;
headerSort(h);
h->flags |= HEADERFLAG_ALLOCATED;
*hdrp = h;
/* We own the memory now, avoid double-frees */
blob->ei = NULL;
return RPMRC_OK;
errxit:
if (h) {
free(h->index);
free(h);
rasprintf(emsg, _("hdr load: BAD"));
}
return RPMRC_FAIL;
}
Header headerReload(Header h, rpmTagVal tag)
{
Header nh;
unsigned int uc = 0;
void * uh = headerExport(h, &uc);
h = headerFree(h);
if (uh == NULL)
return NULL;
nh = headerImport(uh, uc, 0);
if (nh == NULL) {
uh = _free(uh);
return NULL;
}
if (ENTRY_IS_REGION(nh->index)) {
if (tag == RPMTAG_HEADERSIGNATURES || tag == RPMTAG_HEADERIMMUTABLE)
nh->index[0].info.tag = tag;
}
return nh;
}
Header headerLoad(void * uh)
{
return headerImport(uh, 0, 0);
}