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/*
* oma-ds-agent
* Copyright (c) 2012 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the License);
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ENCODING_UTIL_H_
#define ENCODING_UTIL_H_
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define QP_SIZE 76
#define BASE64_SIZE 76
typedef enum {
EN_TYPE_NONE = 0,
EN_TYPE_QUOTED_PRINTABLE,
EN_TYPE_BASE64
} encoding_type_e;
/* Quoted-Printable
*
* @example code
int main()
{
char *src = "hello";
char *encode_src;
int encode_src_len = 0;
char *decode_src;
int decode_src_len = 0;
int res = encode_qp(src, strlen(src), &encode_src, &encode_src_len);
if (res != 0)
fprintf(stdout, "encode src : %s ( %d ) \n", encode_src, encode_src_len);
else
fprintf(stdout, "%s\n", "encode error !!");
res = decode_qp(encode_src, encode_src_len, &decode_src, &decode_src_len);
if (res != 0)
fprintf(stdout, "decode src : %s ( %d ) \n", decode_src, decode_src_len);
else
fprintf(stdout, "%s\n", "decode error !!");
return 0;
}
*/
/*
* @brief encode original source ( encoding type : quoted-printable )
* @param[in] src original source
* @param[in] src_len length of original source
* @param[out] en_src encoded source
* @param[out] en_src_len length of encoded source
* @return operation result
* @retval 1 success
* @retval 0 fail
*/
int encode_qp(char *src, int src_len, char **en_src, int *en_src_len);
/*
* @brief decode encoded source ( decoding type : quoted-printable )
* @param[in] src encoded source
* @param[in] src_len length of encoded source
* @param[out] de_src decoded source ( original source )
* @param[out] de_src_len length of decoded source
* @return operation result
* @retval 1 success
* @retval 0 fail
*/
int decode_qp(char *src, int src_len, char **de_src, int *de_src_len);
/* Base64
*
* @example code
int main()
{
char *src = "hello";
char *encode_src;
int encode_src_len = 0;
char *decode_src;
int decode_src_len = 0;
int res = encode_base64(src, strlen(src), &encode_src, &encode_src_len);
if (res != 0)
fprintf(stdout, "encode src : %s ( %d ) \n", encode_src, encode_src_len);
else
fprintf(stdout, "%s\n", "encode error !!");
res = decode_base64(encode_src, encode_src_len, &decode_src, &decode_src_len);
if (res != 0)
fprintf(stdout, "decode src : %s ( %d ) \n", decode_src, decode_src_len);
else
fprintf(stdout, "%s\n", "decode error !!");
return 0;
}
*/
/*
* @brief encode original source ( encoding type : base64 )
* @param[in] src original source
* @param[in] src_len length of original source
* @param[out] en_src encoded source
* @param[out] en_src_len length of encoded source
* @return operation result
* @retval 1 success
* @retval 0 fail
*/
int encode_base64(char *src, int src_len, char **en_src, int *en_src_len);
/*
* @brief decode encoded source ( decoding type : base64 )
* @param[in] src encoded source
* @param[in] src_len length of encoded source
* @param[out] de_src decoded source ( original source )
* @param[out] de_src_len length of decoded source
* @return operation result
* @retval 1 success
* @retval 0 fail
*/
int decode_base64(char *src, int src_len, char **de_src, int *de_src_len);
/*
* @brief make the decoding process
* @param[in] src encoded source
* @param[in] src_len length of encoded source
* @param[out] de_src decoded source ( original source )
* @param[out] de_src_len length of decoded source
* @return operation result
* @retval 1 success
* @retval 0 fail
*
* @example code
int main()
{
char *src = "..."; // decoded data
int src_len = strlen(src);
char *decode_src;
int decode_src_len = 0;
int res = proc_decoding(src, src_len, &decode_src, &decode_src_len);
if (res != 0)
fprintf(stdout, "decode src : \n%s\n", decode_src);
else
fprintf(stdout, "%s\n", "decode error !!");
if (decode_src != NULL)
free(decode_src);
return 0;
}
*/
int proc_decoding(const char *src, int src_len, char **de_src, int *de_src_len);
/*
* @brief encoded value is changed to the decoded value
* @param[in] type encoding type
* @param[in] value encoded value (end of string must be '\0' !!)
* ex) =EA=B9=80;=EC=B2=A0=EC=88=98;;;\0
* @param[in] value_size length of encoded value
* @param[out] decode_str decoded string
* @param[out] decode_str_len length of decoded string
* @return operation result
* @ratval 1 success
* @retval 0 fail
*
* @example code
int main()
{
char *data = "..."; // ex) ENCODING=QUOTED-PRINTABLE;CHARSET=UTF-8
encoding_type_e type = find_encoding_type((const char *)data);
char *value = "..."; // ex) =EA=B9=80;=EC=B2=A0=EC=88=98;;;\0
int value_size = strlen(value);
int decode_str_len = 0;
char *decode_str = (char*)malloc(sizeof(char)*BUF_SIZE); // BUF_SIZE : user define
if (decode_str == NULL) {
// error process
}
memset(decode_str, 0x00, sizeof(char)*BUF_SIZE);
int res = decode_value(type, value, data_size, &decode_str, &decode_str_len);
if (res == 1) {
// success process
if (decode_str != NULL)
free(decode_str);
} else {
// error process
if (decode_str != NULL)
free(decode_str);
}
return 0;
}
*/
int decode_value(encoding_type_e type, const char *value, int value_size, char **decode_str, int *decode_str_len);
/*
* @brief get encoding type for data
* @param[in] data vobject data
* @return encoding type
* @ratval >= 1 success
* @retval 0 fail
*/
encoding_type_e find_encoding_type(const char *data);
/*
* @brief check whether to exist this string, "ENCODING=" in the data
* @param[in] data vobject data
* @return operation result
* @retval 1 exist
* @retval 0 not exist
*/
int check_encoding_data(const char *data);
#endif /* ENCODING_UTIL_H_ */
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