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/*
* This file is part of the Green End SFTP Server.
* Copyright (C) 2007, 2011, 2014 Richard Kettlewell
*
* This program 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.
*
* This program 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 "sftpserver.h"
#include "alloc.h"
#include "debug.h"
#include "handle.h"
#include "parse.h"
#include "types.h"
#include "sftp.h"
#include "globals.h"
#include "putword.h"
#include "utils.h"
#include <string.h>
uint32_t sftp_parse_uint8(struct sftpjob *job, uint8_t *ur) {
if(job->left < 1)
return SSH_FX_BAD_MESSAGE;
*ur = *job->ptr++;
--job->left;
return SSH_FX_OK;
}
uint32_t sftp_parse_uint16(struct sftpjob *job, uint16_t *ur) {
if(job->left < 2)
return SSH_FX_BAD_MESSAGE;
*ur = get16(job->ptr);
job->ptr += 2;
job->left -= 2;
return SSH_FX_OK;
}
uint32_t sftp_parse_uint32(struct sftpjob *job, uint32_t *ur) {
if(job->left < 4)
return SSH_FX_BAD_MESSAGE;
*ur = get32(job->ptr);
job->ptr += 4;
job->left -= 4;
return SSH_FX_OK;
}
uint32_t sftp_parse_uint64(struct sftpjob *job, uint64_t *ur) {
if(job->left < 8)
return SSH_FX_BAD_MESSAGE;
*ur = get64(job->ptr);
job->ptr += 8;
job->left -= 8;
return SSH_FX_OK;
}
uint32_t sftp_parse_string(struct sftpjob *job, char **strp, size_t *lenp) {
uint32_t len, rc;
char *str;
if((rc = sftp_parse_uint32(job, &len)) != SSH_FX_OK)
return rc;
if(len == 0xFFFFFFFF)
return SSH_FX_BAD_MESSAGE; /* overflow */
if(job->left < len)
return SSH_FX_BAD_MESSAGE; /* not enough bytes to satisfy */
if(lenp)
*lenp = len;
if(strp) {
str = sftp_alloc(job->a, len + 1); /* 0-fills */
sftp_memcpy(str, job->ptr, len);
*strp = str;
}
job->ptr += len;
job->left -= len;
return SSH_FX_OK;
}
uint32_t sftp_parse_path(struct sftpjob *job, char **strp) {
uint32_t rc;
if((rc = sftp_parse_string(job, strp, 0)) != SSH_FX_OK)
return rc;
return protocol->decode(job, strp);
}
uint32_t sftp_parse_handle(struct sftpjob *job, struct handleid *id) {
uint32_t len, rc;
if((rc = sftp_parse_uint32(job, &len)) != SSH_FX_OK)
return rc;
if(len != 8)
return SSH_FX_BAD_MESSAGE;
if((rc = sftp_parse_uint32(job, &id->id)) != SSH_FX_OK ||
(rc = sftp_parse_uint32(job, &id->tag) != SSH_FX_OK))
return rc;
return SSH_FX_OK;
}
/*
LOCAL Variables:
c-basic-offset:2
comment-column:40
fill-column:79
indent-tabs-mode:nil
End:
*/
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