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lib/package.c File Reference

#include "system.h"
#include <netinet/in.h>
#include <rpmio_internal.h>
#include <rpmlib.h>
#include "rpmts.h"
#include "rpmevr.h"
#include "misc.h"
#include "rpmlead.h"
#include "header_internal.h"
#include "signature.h"
#include "debug.h"

Include dependency graph for package.c:

Go to the source code of this file.

Defines

#define alloca_strdup(_s)   strcpy(alloca(strlen(_s)+1), (_s))
#define hdrchkTags(_ntags)   ((_ntags) & 0xffff0000)
 Sanity check on no.
#define hdrchkType(_type)   ((_type) < RPM_MIN_TYPE || (_type) > RPM_MAX_TYPE)
 Sanity check on type values.
#define hdrchkData(_nbytes)   ((_nbytes) & 0xff000000)
 Sanity check on data size and/or offset and/or count.
#define hdrchkAlign(_type, _off)   ((_off) & (typeAlign[_type]-1))
 Sanity check on data alignment for data type.
#define hdrchkRange(_dl, _off)   ((_off) < 0 || (_off) > (_dl))
 Sanity check on range of data offset.
#define _chk(_mask)   (sigtag == 0 && !(vsflags & (_mask)))

Functions

static int dncmp (const void *a, const void *b)
static void compressFilelist (Header h)
 Convert absolute path tag to (dirname,basename,dirindex) tags.
static void rpm3to4 (Header h)
void headerMergeLegacySigs (Header h, const Header sigh)
 Translate and merge legacy signature tags into header.
Header headerRegenSigHeader (const Header h, int noArchiveSize)
 Regenerate signature header.
static int rpmtsStashKeyid (rpmts ts)
 Remember current key id.
int headerVerifyInfo (int il, int dl, const void *pev, void *iv, int negate)
 Perform simple sanity and range checks on header tag(s).
rpmRC headerCheck (rpmts ts, const void *uh, size_t uc, const char **msg)
 Check header consistency, performing headerGetEntry() the hard way.
rpmRC rpmReadHeader (rpmts ts, FD_t fd, Header *hdrp, const char **msg)
 Return checked and loaded header.
rpmRC rpmReadPackageFile (rpmts ts, FD_t fd, const char *fn, Header *hdrp)
 Return package header from file handle, verifying digests/signatures.

Variables

static int _print_pkts = 0
static unsigned int nkeyids_max = 256
static unsigned int nkeyids = 0
static unsigned int nextkeyid = 0
static unsigned int * keyids
static unsigned char header_magic [8]
static int typeAlign [16]
 Alignment needs (and sizeof scalars types) for internal rpm data types.


Detailed Description

Definition in file package.c.


Define Documentation

#define _chk _mask   )     (sigtag == 0 && !(vsflags & (_mask)))
 

Referenced by rpmReadPackageFile().

#define alloca_strdup _s   )     strcpy(alloca(strlen(_s)+1), (_s))
 

Definition at line 27 of file package.c.

#define hdrchkAlign _type,
_off   )     ((_off) & (typeAlign[_type]-1))
 

Sanity check on data alignment for data type.

Definition at line 96 of file package.c.

Referenced by headerVerifyInfo(), and regionSwab().

#define hdrchkData _nbytes   )     ((_nbytes) & 0xff000000)
 

Sanity check on data size and/or offset and/or count.

This check imposes a limit of 16 MB, more than enough.

Definition at line 91 of file package.c.

Referenced by doHeaderUnload(), headerMergeLegacySigs(), headerVerifyInfo(), regionSwab(), and rpmReadHeader().

#define hdrchkRange _dl,
_off   )     ((_off) < 0 || (_off) > (_dl))
 

Sanity check on range of data offset.

Definition at line 101 of file package.c.

Referenced by headerVerifyInfo().

#define hdrchkTags _ntags   )     ((_ntags) & 0xffff0000)
 

Sanity check on no.

of tags. This check imposes a limit of 65K tags, more than enough.

Definition at line 80 of file package.c.

Referenced by doHeaderUnload(), and rpmReadHeader().

#define hdrchkType _type   )     ((_type) < RPM_MIN_TYPE || (_type) > RPM_MAX_TYPE)
 

Sanity check on type values.

Definition at line 85 of file package.c.

Referenced by headerMergeLegacySigs(), headerVerifyInfo(), and regionSwab().


Function Documentation

static void compressFilelist Header  h  )  [static]
 

Convert absolute path tag to (dirname,basename,dirindex) tags.

Parameters:
h header

Definition at line 337 of file package.c.

References alloca(), dncmp(), headerAddEntry(), headerFreeData(), headerGetEntryMinMemory(), headerIsEntry(), headerRemoveEntry(), RPM_INT32_TYPE, RPM_STRING_ARRAY_TYPE, RPMTAG_BASENAMES, RPMTAG_DIRINDEXES, RPMTAG_DIRNAMES, and RPMTAG_OLDFILENAMES.

static int dncmp const void *  a,
const void *  b
[static]
 

Definition at line 323 of file package.c.

rpmRC headerCheck rpmts  ts,
const void *  uh,
size_t  uc,
const char **  msg
 

Check header consistency, performing headerGetEntry() the hard way.

Sanity checks on the header are performed while looking for a header-only digest or signature to verify the blob. If found, the digest or signature is verified.

Parameters:
ts transaction set
uh unloaded header blob
uc no. of bytes in blob (or 0 to disable)
Return values:
*msg signature verification msg
Returns:
RPMRC_OK/RPMRC_NOTFOUND/RPMRC_FAIL

Definition at line 691 of file package.c.

References _, _free(), _print_pkts, alloca(), pgpDigParams_s::hash_algo, pgpDig_s::hdrmd5ctx, pgpDig_s::hdrsha1ctx, header_magic, headerVerifyInfo(), pgpDig_s::nbytes, PGPHASHALGO_SHA1, pgpPrtPkts(), REGION_TAG_COUNT, RPM_BIN_TYPE, RPM_STRING_TYPE, RPMDIGEST_NONE, rpmDigestInit(), rpmDigestUpdate(), rpmIsDebug, RPMMESS_ERROR, rpmMessage, RPMRC_FAIL, RPMRC_NOTFOUND, RPMRC_OK, rpmswEnter(), rpmswExit(), RPMTAG_DSAHEADER, RPMTAG_HEADERIMMUTABLE, RPMTAG_RSAHEADER, RPMTAG_SHA1HEADER, RPMTS_OP_DIGEST, rpmtsCleanDig(), rpmtsDig(), rpmtsOp(), rpmtsSetSig(), rpmtsVSFlags(), rpmVerifySignature(), RPMVSF_NODSAHEADER, RPMVSF_NORSAHEADER, RPMVSF_NOSHA1HEADER, pgpDig_s::signature, snprintf(), pgpDigParams_s::version, xmalloc(), and xstrdup().

Referenced by rpmpsmStage(), rpmReadHeader(), rpmts_HdrCheck(), rpmtsInitIterator(), and rpmtsRebuildDB().

int headerVerifyInfo int  il,
int  dl,
const void *  pev,
void *  iv,
int  negate
 

Perform simple sanity and range checks on header tag(s).

Parameters:
il no. of tags in header
dl no. of bytes in header data.
pev 1st element in tag array, big-endian
iv failing (or last) tag element, host-endian
negate negative offset expected?
Returns:
-1 on success, otherwise failing tag element index

Definition at line 647 of file package.c.

References entryInfo_s::count, hdrchkAlign, hdrchkData, hdrchkRange, hdrchkType, entryInfo_s::offset, entryInfo_s::tag, and entryInfo_s::type.

Referenced by headerCheck(), and rpmReadSignature().

static void rpm3to4 Header  h  )  [static]
 

Definition at line 431 of file package.c.

References alloca(), compressFilelist(), headerAddOrAppendEntry(), headerFreeTag(), headerGetEntry(), headerNVR(), RPM_INT32_TYPE, RPM_STRING_ARRAY_TYPE, RPMSENSE_EQUAL, RPMTAG_EPOCH, RPMTAG_PROVIDEFLAGS, RPMTAG_PROVIDENAME, RPMTAG_PROVIDEVERSION, RPMTAG_RPMVERSION, and stpcpy().

Referenced by rpmReadPackageFile().

rpmRC rpmReadHeader rpmts  ts,
FD_t  fd,
Header hdrp,
const char **  msg
 

Return checked and loaded header.

Parameters:
ts transaction set
fd file handle
Return values:
hdrp address of header (or NULL)
*msg verification error message (or NULL)
Returns:
RPMRC_OK on success

Definition at line 1016 of file package.c.

References _, _free(), block(), errno, fdGetOPath(), FDSTAT_READ, Fileno(), headerToken_s::flags, hdrchkData, hdrchkTags, header_magic, headerCheck(), HEADERFLAG_ALLOCATED, headerFree(), headerGetStatbuf(), headerLink(), headerLoad(), headerSetEndOff(), headerSetOrigin(), headerSetStartOff(), Realpath(), RPMRC_FAIL, RPMRC_OK, snprintf(), _FD_s::stats, timedRead, urlPath(), xmalloc(), and xstrdup().

Referenced by rpmReadPackageFile().

rpmRC rpmReadPackageFile rpmts  ts,
FD_t  fd,
const char *  fn,
Header hdrp
 

Return package header from file handle, verifying digests/signatures.

Todo:
Implement disable/enable/warn/error/anal policy.

Definition at line 1138 of file package.c.

References _, _chk, _free(), _print_pkts, alloca(), rpmop_s::count, _FD_s::digests, fdInitDigest(), fdstat_op(), FDSTAT_READ, Fileno(), Fread(), Fstrerror(), pgpDigParams_s::hash_algo, _FDDIGEST_s::hashalgo, _FDDIGEST_s::hashctx, pgpDig_s::hdrmd5ctx, pgpDig_s::hdrsha1ctx, header_magic, headerFree(), headerFreeData(), headerGetEntry(), headerIsEntry(), headerLink(), headerMergeLegacySigs(), pgpDig_s::md5ctx, pgpDig_s::nbytes, _FD_s::ndigests, PGPHASHALGO_MD5, PGPHASHALGO_RIPEMD160, PGPHASHALGO_SHA1, PGPHASHALGO_SHA256, PGPHASHALGO_SHA384, PGPHASHALGO_SHA512, pgpPrtPkts(), readLead(), rpm3to4(), RPMDIGEST_NONE, rpmDigestInit(), rpmDigestUpdate(), RPMERR_FREAD, RPMERR_NEWPACKAGE, RPMERR_SIGGEN, rpmError, rpmFreeSignature(), rpmIsDebug, RPMMESS_DEBUG, RPMMESS_ERROR, RPMMESS_WARNING, rpmMessage, RPMRC_FAIL, RPMRC_NOKEY, RPMRC_NOTFOUND, RPMRC_NOTTRUSTED, RPMRC_OK, rpmReadHeader(), rpmReadSignature(), RPMSIGTAG_DSA, RPMSIGTAG_GPG, RPMSIGTAG_MD5, RPMSIGTAG_PGP, RPMSIGTAG_PGP5, RPMSIGTAG_RSA, RPMSIGTAG_SHA1, rpmswAdd(), rpmswEnter(), rpmswExit(), rpmswSub(), RPMTAG_HEADERIMMUTABLE, RPMTS_OP_DIGEST, RPMTS_OP_READHDR, RPMTS_OP_SIGNATURE, rpmtsCleanDig(), rpmtsDig(), rpmtsOp(), rpmtsSetSig(), rpmtsStashKeyid(), rpmtsVSFlags(), rpmVerifySignature(), RPMVSF_NEEDPAYLOAD, RPMVSF_NODSA, RPMVSF_NODSAHEADER, RPMVSF_NOMD5, RPMVSF_NORSA, RPMVSF_NORSAHEADER, RPMVSF_NOSHA1HEADER, pgpDig_s::sha1ctx, pgpDig_s::signature, _FD_s::stats, and pgpDigParams_s::version.

Referenced by IDTXglob(), readRPM(), rpmgiReadHeader(), rpmInstall(), rpmInstallSourcePackage(), rpmts_HdrFromFdno(), rpmtsRun(), and rpmtsSolve().

static int rpmtsStashKeyid rpmts  ts  )  [static]
 

Remember current key id.

Parameters:
ts transaction set
Returns:
0 if new keyid, otherwise 1

Definition at line 608 of file package.c.

References keyids, nextkeyid, nkeyids, nkeyids_max, pgpGrab(), rpmtsDig(), rpmtsSig(), rpmtsSignature(), pgpDigParams_s::signid, and xrealloc().

Referenced by rpmReadPackageFile().


Variable Documentation

int _print_pkts = 0 [static]
 

Definition at line 37 of file package.c.

Referenced by headerCheck(), rpmReadPackageFile(), and rpmVerifySignatures().

unsigned char header_magic[8] [static]
 

Initial value:

 {
        0x8e, 0xad, 0xe8, 0x01, 0x00, 0x00, 0x00, 0x00
}

Definition at line 49 of file package.c.

Referenced by headerCheck(), makeHDRSignature(), readFile(), rpmReadHeader(), rpmReadPackageFile(), and rpmReadSignature().

unsigned int* keyids [static]
 

Definition at line 46 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nextkeyid = 0 [static]
 

Definition at line 44 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nkeyids = 0 [static]
 

Definition at line 42 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nkeyids_max = 256 [static]
 

Definition at line 40 of file package.c.

Referenced by rpmtsStashKeyid().

int typeAlign[16] [static]
 

Initial value:

  {
    1,  
    1,  
    1,  
    2,  
    4,  
    8,  
    1,  
    1,  
    1,  
    1,  
    0,
    0,
    0,
    0,
    0,
    0
}
Alignment needs (and sizeof scalars types) for internal rpm data types.

Definition at line 57 of file package.c.


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