135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#ifndef GUAC_COMMON_SSH_BUFFER_H
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#define GUAC_COMMON_SSH_BUFFER_H
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#include "config.h"
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#include <openssl/bn.h>
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#include <stdint.h>
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/**
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* Writes the given byte to the given buffer, advancing the buffer pointer by
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* one byte.
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*
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* @param buffer
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* The buffer to write to.
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*
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* @param value
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* The value to write.
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*/
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void guac_common_ssh_buffer_write_byte(char** buffer, uint8_t value);
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/**
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* Writes the given integer to the given buffer, advancing the buffer pointer
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* four bytes.
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*
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* @param buffer
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* The buffer to write to.
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*
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* @param value
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* The value to write.
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*/
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void guac_common_ssh_buffer_write_uint32(char** buffer, uint32_t value);
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/**
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* Writes the given string and its length to the given buffer, advancing the
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* buffer pointer by the size of the length (four bytes) and the size of the
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* string.
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*
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* @param buffer
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* The buffer to write to.
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*
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* @param string
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* The string value to write.
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*
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* @param length
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* The length of the string to write, in bytes.
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*/
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void guac_common_ssh_buffer_write_string(char** buffer, const char* string,
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int length);
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/**
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* Writes the given BIGNUM the given buffer, advancing the buffer pointer by
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* the size of the length (four bytes) and the size of the BIGNUM.
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*
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* @param buffer
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* The buffer to write to.
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*
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* @param value
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* The value to write.
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*/
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void guac_common_ssh_buffer_write_bignum(char** buffer, BIGNUM* value);
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/**
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* Writes the given data the given buffer, advancing the buffer pointer by the
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* given length.
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*
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* @param data
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* The arbitrary data to write.
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*
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* @param length
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* The length of data to write, in bytes.
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*/
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void guac_common_ssh_buffer_write_data(char** buffer, const char* data, int length);
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/**
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* Reads a single byte from the given buffer, advancing the buffer by one byte.
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*
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* @param buffer
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* The buffer to read from.
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*
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* @return
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* The value read from the buffer.
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*/
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uint8_t guac_common_ssh_buffer_read_byte(char** buffer);
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/**
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* Reads an integer from the given buffer, advancing the buffer by four bytes.
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*
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* @param buffer
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* The buffer to read from.
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*
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* @return
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* The value read from the buffer.
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*/
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uint32_t guac_common_ssh_buffer_read_uint32(char** buffer);
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/**
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* Reads a string and its length from the given buffer, advancing the buffer
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* by the size of the length (four bytes) and the size of the string, and
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* returning a pointer to the buffer. The length of the string is stored in
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* the given int.
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*
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* @param buffer
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* The buffer to read from.
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*
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* @param length
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* A pointer to an integer into which the length of the read string will
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* be stored.
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*
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* @return
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* A pointer to the value within the buffer.
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*/
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char* guac_common_ssh_buffer_read_string(char** buffer, int* length);
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#endif
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