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/*
* Copyright (C) 2000 Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* GNUTLS is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GNUTLS is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <defines.h>
#include "gnutls_int.h"
#include "gnutls_errors.h"
int gnutls_insertDataBuffer(ContentType type, GNUTLS_STATE state, char *data, int length)
{
int old_buffer;
if (type == GNUTLS_APPLICATION_DATA) {
old_buffer = state->gnutls_internals.bufferSize;
state->gnutls_internals.bufferSize += length;
#ifdef HARD_DEBUG
fprintf(stderr, "Inserted %d bytes of Data(%d) into buffer\n", length, type);
#endif
state->gnutls_internals.buffer =
gnutls_realloc(state->gnutls_internals.buffer,
state->gnutls_internals.bufferSize);
memmove(&state->gnutls_internals.buffer[old_buffer], data, length);
}
if (type == GNUTLS_HANDSHAKE) {
old_buffer = state->gnutls_internals.bufferSize_handshake;
state->gnutls_internals.bufferSize_handshake += length;
#ifdef HARD_DEBUG
fprintf(stderr, "Inserted %d bytes of Data(%d) into buffer\n", length, type);
#endif
state->gnutls_internals.buffer_handshake =
gnutls_realloc(state->gnutls_internals.buffer_handshake,
state->gnutls_internals.bufferSize_handshake);
memmove(&state->gnutls_internals.buffer_handshake[old_buffer], data, length);
}
return 0;
}
int gnutls_getDataBufferSize(ContentType type, GNUTLS_STATE state)
{
if (type == GNUTLS_APPLICATION_DATA)
return state->gnutls_internals.bufferSize;
if (type == GNUTLS_HANDSHAKE)
return state->gnutls_internals.bufferSize_handshake;
return 0;
}
int gnutls_getDataFromBuffer(ContentType type, GNUTLS_STATE state, char *data, int length)
{
if (type == GNUTLS_APPLICATION_DATA) {
if (length > state->gnutls_internals.bufferSize) {
length = state->gnutls_internals.bufferSize;
}
#ifdef HARD_DEBUG
fprintf(stderr, "Read %d bytes of Data(%d) from buffer\n", length, type);
#endif
state->gnutls_internals.bufferSize -= length;
memmove(data, state->gnutls_internals.buffer, length);
/* overwrite buffer */
memmove(state->gnutls_internals.buffer,
&state->gnutls_internals.buffer[length],
state->gnutls_internals.bufferSize);
state->gnutls_internals.buffer =
gnutls_realloc(state->gnutls_internals.buffer,
state->gnutls_internals.bufferSize);
}
if (type == GNUTLS_HANDSHAKE) {
if (length > state->gnutls_internals.bufferSize_handshake) {
length = state->gnutls_internals.bufferSize_handshake;
}
#ifdef HARD_DEBUG
fprintf(stderr, "Read %d bytes of Data(%d) from buffer\n", length, type);
#endif
state->gnutls_internals.bufferSize_handshake -= length;
memmove(data, state->gnutls_internals.buffer_handshake, length);
/* overwrite buffer */
memmove(state->gnutls_internals.buffer_handshake,
&state->gnutls_internals.buffer_handshake[length],
state->gnutls_internals.bufferSize_handshake);
state->gnutls_internals.buffer_handshake =
gnutls_realloc(state->gnutls_internals.buffer_handshake,
state->gnutls_internals.bufferSize_handshake);
}
return length;
}
ssize_t Read(int fd, void *iptr, size_t sizeOfPtr)
{
size_t left;
ssize_t i=0;
char *ptr = iptr;
#ifdef READ_DEBUG
int j,x, sum=0;
#endif
left = sizeOfPtr;
while (left > 0) {
i = read(fd, &ptr[i], left);
if (i < 0) {
return -1;
} else {
if (i == 0)
break; /* EOF */
}
left -= i;
}
#ifdef READ_DEBUG
fprintf(stderr, "read %d bytes from %d\n", (sizeOfPtr-left), fd);
for (x=0;x<((sizeOfPtr-left)/16)+1;x++) {
fprintf(stderr, "%.4x - ",x);
for (j=0;j<16;j++) {
if (sum<(sizeOfPtr-left)) {
fprintf(stderr, "%.2x ", ((unsigned char*)ptr)[sum++]);
}
}
fprintf(stderr, "\n");
}
#endif
return (sizeOfPtr - left);
}
ssize_t Write(int fd, const void *iptr, size_t n)
{
size_t left;
#ifdef WRITE_DEBUG
int j,x, sum=0;
#endif
ssize_t i = 0;
const char *ptr = iptr;
#ifdef WRITE_DEBUG
fprintf(stderr, "wrote %d bytes to %d\n", n, fd);
for (x=0;x<(n/16)+1;x++) {
fprintf(stderr, "%.4x - ",x);
for (j=0;j<16;j++) {
if (sum<n) {
fprintf(stderr, "%.2x ", ((unsigned char*)ptr)[sum++]);
}
}
fprintf(stderr, "\n");
}
#endif
left = n;
while (left > 0) {
i = write(fd, &ptr[i], left);
if (i <= 0) {
return -1;
}
left -= i;
}
return n;
}
ssize_t _gnutls_Send_int(int fd, GNUTLS_STATE state, ContentType type, void *iptr, size_t n)
{
size_t left;
ssize_t i = 0;
char *ptr = iptr;
left = n;
while (left > 0) {
i = gnutls_send_int(fd, state, type, &ptr[i], left);
if (i <= 0) {
return i;
}
left -= i;
}
return n;
}
ssize_t _gnutls_Recv_int(int fd, GNUTLS_STATE state, ContentType type, void *iptr, size_t sizeOfPtr)
{
size_t left;
ssize_t i=0;
char *ptr = iptr;
left = sizeOfPtr;
while (left > 0) {
i = gnutls_recv_int(fd, state, type, &ptr[i], left);
if (i < 0) {
return i;
} else {
if (i == 0)
break; /* EOF */
}
left -= i;
}
return (sizeOfPtr - left);
}
int gnutls_insertHashDataBuffer( int type, GNUTLS_STATE state, char *data, int length)
{
int old_buffer;
if (type==GNUTLS_SERVER) {
old_buffer = state->gnutls_internals.server_hash_bufferSize;
state->gnutls_internals.server_hash_bufferSize += length;
#ifdef HARD_DEBUG
fprintf(stderr, "Inserted %d bytes of SSL3 Server Hash Data(%d) into buffer\n", length, type);
#endif
state->gnutls_internals.server_hash_buffer =
gnutls_realloc(state->gnutls_internals.server_hash_buffer,
state->gnutls_internals.server_hash_bufferSize);
memmove(&state->gnutls_internals.server_hash_buffer[old_buffer], data, length);
} else { /* GNUTLS_CLIENT */
old_buffer = state->gnutls_internals.client_hash_bufferSize;
state->gnutls_internals.client_hash_bufferSize += length;
#ifdef HARD_DEBUG
fprintf(stderr, "Inserted %d bytes of SSL3 Client Hash Data(%d) into buffer\n", length, type);
#endif
state->gnutls_internals.client_hash_buffer =
gnutls_realloc(state->gnutls_internals.client_hash_buffer,
state->gnutls_internals.client_hash_bufferSize);
memmove(&state->gnutls_internals.client_hash_buffer[old_buffer], data, length);
}
return 0;
}
int gnutls_getHashDataBufferSize( int type, GNUTLS_STATE state)
{
if (type==GNUTLS_SERVER) {
return state->gnutls_internals.server_hash_bufferSize;
} else {
return state->gnutls_internals.client_hash_bufferSize;
}
}
int gnutls_getHashDataFromBuffer(int type, GNUTLS_STATE state, char *data, int length)
{
if (type==GNUTLS_SERVER) {
if (length > state->gnutls_internals.server_hash_bufferSize) {
length = state->gnutls_internals.server_hash_bufferSize;
}
#ifdef HARD_DEBUG
fprintf(stderr, "Read %d bytes of SSL3 Server Hash Data(%d) from buffer\n", length, type);
#endif
state->gnutls_internals.server_hash_bufferSize -= length;
memmove(data, state->gnutls_internals.server_hash_buffer, length);
/* overwrite buffer */
memmove(state->gnutls_internals.server_hash_buffer,
&state->gnutls_internals.server_hash_buffer[length],
state->gnutls_internals.server_hash_bufferSize);
state->gnutls_internals.server_hash_buffer =
gnutls_realloc(state->gnutls_internals.server_hash_buffer,
state->gnutls_internals.server_hash_bufferSize);
return length;
} else { /* CLIENT */
if (length > state->gnutls_internals.client_hash_bufferSize) {
length = state->gnutls_internals.client_hash_bufferSize;
}
#ifdef HARD_DEBUG
fprintf(stderr, "Read %d bytes of SSL3 Client Hash Data(%d) from buffer\n", length, type);
#endif
state->gnutls_internals.client_hash_bufferSize -= length;
memmove(data, state->gnutls_internals.client_hash_buffer, length);
/* overwrite buffer */
memmove(state->gnutls_internals.client_hash_buffer,
&state->gnutls_internals.client_hash_buffer[length],
state->gnutls_internals.client_hash_bufferSize);
state->gnutls_internals.client_hash_buffer =
gnutls_realloc(state->gnutls_internals.client_hash_buffer,
state->gnutls_internals.client_hash_bufferSize);
return length;
}
}
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