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* mpicoder.c (mpi_read): Fix minor bug in reading a zero-length MPI

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(was failing unnecessarily).
This commit is contained in:
David Shaw 2005-09-01 13:44:49 +00:00
parent 187eaf0665
commit 516ec53e02
2 changed files with 14 additions and 5 deletions
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5
mpi/ChangeLog
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@ -1,3 +1,8 @@
2005-09-01 David Shaw <dshaw@jabberwocky.com>
* mpicoder.c (mpi_read): Fix minor bug in reading a zero-length
MPI (was failing unnecessarily).
2005-05-06 Werner Koch <wk@g10code.com> 2005-05-06 Werner Koch <wk@g10code.com>
* mpi-scan.c (mpi_putbyte, mpi_getbyte): Removed. Not used. * mpi-scan.c (mpi_putbyte, mpi_getbyte): Removed. Not used.

14
mpi/mpicoder.c
View File

@ -80,16 +80,20 @@ mpi_read(IOBUF inp, unsigned *ret_nread, int secure)
mpi_limb_t a; mpi_limb_t a;
MPI val = MPI_NULL; MPI val = MPI_NULL;
if (nread == nmax)
goto overflow;
if( (c = iobuf_get(inp)) == -1 ) if( (c = iobuf_get(inp)) == -1 )
goto leave; goto leave;
if (++nread >= nmax) nread++;
goto overflow;
nbits = c << 8; nbits = c << 8;
if (nread == nmax)
goto overflow;
if( (c = iobuf_get(inp)) == -1 ) if( (c = iobuf_get(inp)) == -1 )
goto leave; goto leave;
if (++nread >= nmax) nread++;
goto overflow;
nbits |= c; nbits |= c;
if( nbits > MAX_EXTERN_MPI_BITS ) { if( nbits > MAX_EXTERN_MPI_BITS ) {
log_error("mpi too large for this implementation (%u bits)\n", nbits); log_error("mpi too large for this implementation (%u bits)\n", nbits);
goto leave; goto leave;
@ -112,7 +116,7 @@ mpi_read(IOBUF inp, unsigned *ret_nread, int secure)
for( ; j > 0; j-- ) { for( ; j > 0; j-- ) {
a = 0; a = 0;
for(; i < BYTES_PER_MPI_LIMB; i++ ) { for(; i < BYTES_PER_MPI_LIMB; i++ ) {
if (nread >= nmax) { if (nread == nmax) {
#ifdef M_DEBUG #ifdef M_DEBUG
mpi_debug_free (val); mpi_debug_free (val);
#else #else