static int
doDecrypt(FILE *logfp, FILE *eifp, FILE *outfp)
{
off64_t blkEnd;
off64_t currOffs = 0;
int r = 1;
int fd;
struct stat buf;
while(1) {
/* process block */
if(initCrypt(eifp) != 0)
goto done;
/* set blkEnd to size of logfp and proceed. */
if((fd = fileno(logfp)) == -1) {
r = -1;
goto done;
}
if((r = fstat(fd, &buf)) != 0) goto done;
blkEnd = buf.st_size;
r = eiGetEND(eifp, &blkEnd);
if(r != 0 && r != 1) goto done;
decryptBlock(logfp, outfp, blkEnd, &currOffs);
gcry_cipher_close(gcry_chd);
}
r = 0;
done: return r;
}
static int
doDecrypt(FILE *logfp, FILE *eifp, FILE *outfp)
{
off64_t blkEnd;
off64_t currOffs = 0;
int r;
while(1) {
/* process block */
if(initCrypt(eifp) != 0)
goto done;
if((r = eiGetEND(eifp, &blkEnd)) != 0) goto done;
decryptBlock(logfp, outfp, blkEnd, &currOffs);
gcry_cipher_close(gcry_chd);
}
r = 0;
done: return r;
}
/* this tries to read the END record. HOWEVER, no such record may be
* present, which is the case if we handle a currently-written to queue
* file. On the other hand, the queue file may contain multiple blocks. So
* what we do is try to see if there is a block end or not - and set the
* status accordingly. Note that once we found no end-of-block, we will never
* retry. This is because that case can never happen under current queue
* implementations. -- gerhards, 2013-05-16
*/
static inline rsRetVal
readBlkEnd(gcryfile gf)
{
off64_t blkEnd;
DEFiRet;
iRet = eiGetEND(gf, &blkEnd);
if(iRet == RS_RET_OK) {
gf->bytesToBlkEnd = (ssize_t) blkEnd;
} else if(iRet == RS_RET_NO_DATA) {
gf->bytesToBlkEnd = -1;
} else {
FINALIZE;
}
finalize_it:
RETiRet;
}
