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package.c File Reference

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

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

void headerMergeLegacySigs (Header h, const Header sigh)
Header headerRegenSigHeader (const Header h, int noArchiveSize)
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

int _print_pkts = 0
unsigned int nkeyids_max = 256
unsigned int nkeyids = 0
unsigned int nextkeyid = 0
unsigned int * keyids
unsigned char header_magic [8]
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 22 of file package.c.

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

Sanity check on data alignment for data type.

Definition at line 91 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 86 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 96 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 75 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 80 of file package.c.

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


Function Documentation

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 325 of file package.c.

References _, _free(), _print_pkts, alloca(), entryInfo_s::count, entryInfo, pgpDig_s::hdrsha1ctx, headerVerifyInfo(), indexEntry, int_32, pgpDig_s::nbytes, entryInfo_s::offset, pgpDig, PGPHASHALGO_MD5, PGPHASHALGO_SHA1, pgpPrtPkts(), REGION_TAG_COUNT, RPM_BIN_TYPE, RPM_STRING_TYPE, RPMDIGEST_NONE, rpmDigestInit(), rpmDigestUpdate(), rpmIsDebug, RPMMESS_WARNING, rpmMessage, rpmRC, rpmswEnter(), rpmswExit(), RPMTAG_DSAHEADER, RPMTAG_HEADERIMMUTABLE, RPMTAG_RSAHEADER, RPMTAG_SHA1HEADER, RPMTS_OP_DIGEST, rpmtsCleanDig(), rpmtsDig(), rpmtsOp(), rpmtsSetSig(), rpmtsVSFlags(), rpmVerifySignature(), rpmVSFlags, 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 281 of file package.c.

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

Referenced by headerCheck(), and rpmReadSignature().

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 643 of file package.c.

References _, _free(), FD_t, headerToken_s::flags, hdrchkData, hdrchkTags, Header, header_magic, headerCheck(), headerFree(), headerLink(), headerLoad(), int_32, rpmRC, snprintf(), timedRead, 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 741 of file package.c.

References _, _chk, _free(), _print_pkts, alloca(), byte, _FD_s::digests, FD_t, FDDIGEST_t, fdInitDigest(), Fileno(), Fread(), Fstrerror(), _FDDIGEST_s::hashalgo, _FDDIGEST_s::hashctx, pgpDig_s::hdrsha1ctx, Header, header_magic, HEADER_MAGIC_YES, headerFree(), headerFreeData(), headerGetEntry(), headerIsEntry(), headerLink(), headerMergeLegacySigs(), headerSizeof(), int_32, legacyRetrofit(), pgpDig_s::md5ctx, pgpDig_s::nbytes, _FD_s::ndigests, pgpDig, PGPHASHALGO_MD5, PGPHASHALGO_SHA1, pgpPrtPkts(), readLead(), RPMDIGEST_NONE, rpmDigestInit(), rpmDigestUpdate(), RPMERR_FREAD, RPMERR_NEWPACKAGE, RPMERR_SIGGEN, rpmError, rpmFreeSignature(), rpmIsDebug, RPMMESS_DEBUG, RPMMESS_ERROR, RPMMESS_WARNING, rpmMessage, rpmRC, 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, RPMTAG_HEADERIMMUTABLE, rpmtsCleanDig(), rpmtsDig(), rpmtsSetSig(), rpmtsStashKeyid(), rpmtsVSFlags(), rpmVerifySignature(), RPMVSF_NEEDPAYLOAD, RPMVSF_NODSA, RPMVSF_NODSAHEADER, RPMVSF_NOMD5, RPMVSF_NORSA, RPMVSF_NORSAHEADER, RPMVSF_NOSHA1HEADER, rpmVSFlags, pgpDig_s::sha1ctx, pgpDig_s::signature, and pgpDigParams_s::version.

Referenced by ftsStashLatest(), IDTXglob(), main(), readRPM(), rpmGraph(), rpmInstall(), rpmInstallSourcePackage(), rpmQueryVerify(), rpmts_HdrFromFdno(), rpmtsRun(), and rpmtsSolve().

int rpmtsStashKeyid rpmts  ts  )  [static]
 

Remember current key id.

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

Definition at line 242 of file package.c.

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

Referenced by rpmReadPackageFile().


Variable Documentation

int _print_pkts = 0 [static]
 

Definition at line 32 of file package.c.

Referenced by headerCheck(), and rpmReadPackageFile().

unsigned char header_magic[8] [static]
 

Initial value:

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

Definition at line 44 of file package.c.

Referenced by rpmReadHeader(), and rpmReadPackageFile().

unsigned int* keyids [static]
 

Definition at line 41 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nextkeyid = 0 [static]
 

Definition at line 39 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nkeyids = 0 [static]
 

Definition at line 37 of file package.c.

Referenced by rpmtsStashKeyid().

unsigned int nkeyids_max = 256 [static]
 

Definition at line 35 of file package.c.

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 52 of file package.c.


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