C client generator improvements to support petstore. Solves #5836 (#5837)

* C client generator improvement to support:
openapi-generator/modules/openapi-generator/src/test/resources/3_0/petstore.yaml

* Improvements to the C client generator:
- moved base64* from apiClient.c to binary.h/binary.c
- changed CR/LF to LF in binary.h/binary.c

* C client generator: better support for base64encode / base64decode
This commit is contained in:
Michele Albano 2020-04-07 05:40:57 +02:00 committed by GitHub
parent ff0c730ec8
commit 5fd724fceb
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
25 changed files with 216 additions and 131 deletions

View File

@ -223,10 +223,12 @@ public class CLibcurlClientCodegen extends DefaultCodegen implements CodegenConf
supportingFiles.add(new SupportingFile("apiClient.c.mustache", "src", "apiClient.c"));
supportingFiles.add(new SupportingFile("apiKey.c.mustache", "src", "apiKey.c"));
supportingFiles.add(new SupportingFile("list.c.mustache", "src", "list.c"));
supportingFiles.add(new SupportingFile("binary.c.mustache", "src", "binary.c"));
// include folder
supportingFiles.add(new SupportingFile("apiClient.h.mustache", "include", "apiClient.h"));
supportingFiles.add(new SupportingFile("keyValuePair.h.mustache", "include", "keyValuePair.h"));
supportingFiles.add(new SupportingFile("list.h.mustache", "include", "list.h"));
supportingFiles.add(new SupportingFile("binary.h.mustache", "include", "binary.h"));
// external folder
supportingFiles.add(new SupportingFile("cJSON.licence.mustache", "external", "cJSON.licence"));
supportingFiles.add(new SupportingFile("cJSON.c.mustache", "external", "cJSON.c"));
@ -377,14 +379,14 @@ public class CLibcurlClientCodegen extends DefaultCodegen implements CodegenConf
example = "\"2013-10-20T19:20:30+01:00\"";
return example;
} else if (ModelUtils.isBinarySchema(schema)) {
example = "bytes(b'blah')";
example = "instantiate_binary_t(\"blah\", 5)";
return example;
} else if (ModelUtils.isByteArraySchema(schema)) {
example = "YQ==";
} else if (ModelUtils.isStringSchema(schema)) {
// a BigDecimal:
if ("Number".equalsIgnoreCase(schema.getFormat())) {return "1";}
if (StringUtils.isNotBlank(schema.getPattern())) return "'a'"; // I cheat here, since it would be too complicated to generate a string from a regexp
if (StringUtils.isNotBlank(schema.getPattern())) return "\"a\""; // I cheat here, since it would be too complicated to generate a string from a regexp
int len = 0;
if (null != schema.getMinLength()) len = schema.getMinLength().intValue();
if (len < 1) len = 1;

View File

@ -8,6 +8,19 @@ set(CMAKE_CXX_VISIBILITY_PRESET default)
set(CMAKE_VISIBILITY_INLINES_HIDDEN OFF)
set(CMAKE_BUILD_TYPE Debug)
find_package(OpenSSL)
if (OPENSSL_FOUND)
message (STATUS "OPENSSL found")
set (CMAKE_C_FLAGS "-DOPENSSL")
include_directories(${OPENSSL_INCLUDE_DIR})
include_directories(${OPENSSL_INCLUDE_DIRS})
link_directories(${OPENSSL_LIBRARIES})
message(STATUS "Using OpenSSL ${OPENSSL_VERSION}")
else()
message (STATUS "OpenSSL Not found.")
endif()
set(pkgName "{{projectName}}")
find_package(CURL 7.58.0 REQUIRED)
@ -22,6 +35,7 @@ set(SRCS
src/list.c
src/apiKey.c
src/apiClient.c
src/binary.c
external/cJSON.c
model/object.c
{{#models}}
@ -42,6 +56,7 @@ set(SRCS
set(HDRS
include/apiClient.h
include/list.h
include/binary.h
include/keyValuePair.h
external/cJSON.h
model/object.h

View File

@ -4,6 +4,7 @@
#include "../include/list.h"
#include "../external/cJSON.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
{{#imports}}{{{import}}}
{{/imports}}

View File

@ -3,9 +3,6 @@
#include <string.h>
#include <stdio.h>
#include "../include/apiClient.h"
#ifdef OPENSSL
#include "openssl/pem.h"
#endif
size_t writeDataCallback(void *buffer, size_t size, size_t nmemb, void *userp);
@ -26,7 +23,7 @@ apiClient_t *apiClient_create() {
apiClient->accessToken = NULL;
{{/isOAuth}}
{{#isApiKey}}
apiClient->apiKeys = NULL;
apiClient->apiKeys_{{name}} = NULL;
{{/isApiKey}}
{{/authMethods}}
{{/hasAuthMethods}}
@ -39,7 +36,7 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
{{#hasAuthMethods}}
{{#authMethods}}
{{#isApiKey}}
, list_t *apiKeys
, list_t *apiKeys_{{name}}
{{/isApiKey}}
{{/authMethods}}
{{/hasAuthMethods}}
@ -70,16 +67,16 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
apiClient->accessToken = NULL;
{{/isOAuth}}
{{#isApiKey}}
if(apiKeys!= NULL) {
apiClient->apiKeys = list_create();
if(apiKeys_{{name}}!= NULL) {
apiClient->apiKeys_{{name}} = list_create();
listEntry_t *listEntry = NULL;
list_ForEach(listEntry, apiKeys) {
list_ForEach(listEntry, apiKeys_{{name}}) {
keyValuePair_t *pair = listEntry->data;
keyValuePair_t *pairDup = keyValuePair_create(strdup(pair->key), strdup(pair->value));
list_addElement(apiClient->apiKeys, pairDup);
list_addElement(apiClient->apiKeys_{{name}}, pairDup);
}
}else{
apiClient->apiKeys = NULL;
apiClient->apiKeys_{{name}} = NULL;
}
{{/isApiKey}}
{{/authMethods}}
@ -108,9 +105,9 @@ void apiClient_free(apiClient_t *apiClient) {
}
{{/isOAuth}}
{{#isApiKey}}
if(apiClient->apiKeys) {
if(apiClient->apiKeys_{{name}}) {
listEntry_t *listEntry = NULL;
list_ForEach(listEntry, apiClient->apiKeys) {
list_ForEach(listEntry, apiClient->apiKeys_{{name}}) {
keyValuePair_t *pair = listEntry->data;
if(pair->key){
free(pair->key);
@ -120,7 +117,7 @@ void apiClient_free(apiClient_t *apiClient) {
}
keyValuePair_free(pair);
}
list_free(apiClient->apiKeys);
list_free(apiClient->apiKeys_{{name}});
}
{{/isApiKey}}
{{/authMethods}}
@ -440,9 +437,9 @@ void apiClient_invoke(apiClient_t *apiClient,
{{#authMethods}}
{{#isApiKey}}
// this would only be generated for apiKey authentication
if (apiClient->apiKeys != NULL)
if (apiClient->apiKeys_{{name}} != NULL)
{
list_ForEach(listEntry, apiClient->apiKeys) {
list_ForEach(listEntry, apiClient->apiKeys_{{name}}) {
keyValuePair_t *apiKey = listEntry->data;
if((apiKey->key != NULL) &&
(apiKey->value != NULL) )
@ -616,40 +613,3 @@ char *strReplace(char *orig, char *rep, char *with) {
return result;
}
char *base64encode (const void *b64_encode_this, int encode_this_many_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
BUF_MEM *mem_bio_mem_ptr; //Pointer to a "memory BIO" structure holding our base64 data.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory sink BIO.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-sink BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //No newlines every 64 characters or less.
BIO_write(b64_bio, b64_encode_this, encode_this_many_bytes); //Records base64 encoded data.
BIO_flush(b64_bio); //Flush data. Necessary for b64 encoding, because of pad characters.
BIO_get_mem_ptr(mem_bio, &mem_bio_mem_ptr); //Store address of mem_bio's memory structure.
BIO_set_close(mem_bio, BIO_NOCLOSE); //Permit access to mem_ptr after BIOs are destroyed.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
BUF_MEM_grow(mem_bio_mem_ptr, (*mem_bio_mem_ptr).length + 1); //Makes space for end null.
(*mem_bio_mem_ptr).data[(*mem_bio_mem_ptr).length] = '\0'; //Adds null-terminator to tail.
return (*mem_bio_mem_ptr).data; //Returns base-64 encoded data. (See: "buf_mem_st" struct).
#endif
}
char *base64decode (const void *b64_decode_this, int decode_this_many_bytes, int *decoded_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
char *base64_decoded = calloc( (decode_this_many_bytes*3)/4+1, sizeof(char) ); //+1 = null.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory source BIO.
BIO_write(mem_bio, b64_decode_this, decode_this_many_bytes); //Base64 data saved in source.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-source BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //Don't require trailing newlines.
int decoded_byte_index = 0; //Index where the next base64_decoded byte should be written.
while ( 0 < BIO_read(b64_bio, base64_decoded+decoded_byte_index, 1) ){ //Read byte-by-byte.
decoded_byte_index++; //Increment the index until read of BIO decoded data is complete.
} //Once we're done reading decoded data, BIO_read returns -1 even though there's no error.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
*decoded_bytes = decoded_byte_index;
return base64_decoded; //Returns base-64 decoded data with trailing null terminator.
#endif
}

View File

@ -8,6 +8,7 @@
#include <stdint.h>
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct sslConfig_t {
char *clientCertFile; /* client certificate */
@ -32,18 +33,12 @@ typedef struct apiClient_t {
char *accessToken;
{{/isOAuth}}
{{#isApiKey}}
list_t *apiKeys;
list_t *apiKeys_{{name}};
{{/isApiKey}}
{{/authMethods}}
{{/hasAuthMethods}}
} apiClient_t;
typedef struct binary_t
{
uint8_t* data;
unsigned int len;
} binary_t;
apiClient_t* apiClient_create();
apiClient_t* apiClient_create_with_base_path(const char *basePath
@ -51,7 +46,7 @@ apiClient_t* apiClient_create_with_base_path(const char *basePath
{{#hasAuthMethods}}
{{#authMethods}}
{{#isApiKey}}
, list_t *apiKeys
, list_t *apiKeys_{{name}}
{{/isApiKey}}
{{/authMethods}}
{{/hasAuthMethods}}
@ -67,8 +62,4 @@ void sslConfig_free(sslConfig_t *sslConfig);
char *strReplace(char *orig, char *rep, char *with);
char *base64encode(const void *b64_encode_this, int encode_this_many_bytes);
char *base64decode(const void *b64_decode_this, int decode_this_many_bytes);
#endif // INCLUDE_API_CLIENT_H

View File

@ -0,0 +1,58 @@
#include <stdlib.h>
#include <string.h>
#include "../include/binary.h"
#ifdef OPENSSL
#include "openssl/pem.h"
#endif
binary_t* instantiate_binary_t(char* data, int len) {
binary_t* ret = malloc(sizeof(struct binary_t));
ret->len=len;
ret->data = malloc(len);
memcpy(ret->data, data, len);
return ret;
}
char *base64encode (const void *b64_encode_this, int encode_this_many_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
BUF_MEM *mem_bio_mem_ptr; //Pointer to a "memory BIO" structure holding our base64 data.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory sink BIO.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-sink BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //No newlines every 64 characters or less.
BIO_write(b64_bio, b64_encode_this, encode_this_many_bytes); //Records base64 encoded data.
BIO_flush(b64_bio); //Flush data. Necessary for b64 encoding, because of pad characters.
BIO_get_mem_ptr(mem_bio, &mem_bio_mem_ptr); //Store address of mem_bio's memory structure.
BIO_set_close(mem_bio, BIO_NOCLOSE); //Permit access to mem_ptr after BIOs are destroyed.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
BUF_MEM_grow(mem_bio_mem_ptr, (*mem_bio_mem_ptr).length + 1); //Makes space for end null.
(*mem_bio_mem_ptr).data[(*mem_bio_mem_ptr).length] = '\0'; //Adds null-terminator to tail.
return (*mem_bio_mem_ptr).data; //Returns base-64 encoded data. (See: "buf_mem_st" struct).
#else // OPENSSL
#warning Data will not be encoded. If you want to use function "base64encode", please define "-DOPENSSL" when building the library.
return NULL;
#endif // OPENSSL
}
char *base64decode (const void *b64_decode_this, int decode_this_many_bytes, int *decoded_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
char *base64_decoded = calloc( (decode_this_many_bytes*3)/4+1, sizeof(char) ); //+1 = null.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory source BIO.
BIO_write(mem_bio, b64_decode_this, decode_this_many_bytes); //Base64 data saved in source.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-source BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //Don't require trailing newlines.
int decoded_byte_index = 0; //Index where the next base64_decoded byte should be written.
while ( 0 < BIO_read(b64_bio, base64_decoded+decoded_byte_index, 1) ){ //Read byte-by-byte.
decoded_byte_index++; //Increment the index until read of BIO decoded data is complete.
} //Once we're done reading decoded data, BIO_read returns -1 even though there's no error.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
*decoded_bytes = decoded_byte_index;
return base64_decoded; //Returns base-64 decoded data with trailing null terminator.
#else // OPENSSL
#warning Data will not be decoded. If you want to use function "base64decode", please define "-DOPENSSL" when building the library.
return NULL;
#endif // OPENSSL
}

View File

@ -0,0 +1,18 @@
#ifndef INCLUDE_BINARY_H
#define INCLUDE_BINARY_H
#include <stdint.h>
typedef struct binary_t
{
uint8_t* data;
unsigned int len;
} binary_t;
binary_t* instantiate_binary_t(char* data, int len);
char *base64encode(const void *b64_encode_this, int encode_this_many_bytes);
char *base64decode(const void *b64_decode_this, int decode_this_many_bytes, int *decoded_bytes);
#endif // INCLUDE_BINARY_H

View File

@ -534,7 +534,7 @@ fail:
}
{{/isByteArray}}
{{#isBinary}}
binary_t* decoded_str_{{{name}}};
binary_t* decoded_str_{{{name}}} = malloc(sizeof(struct binary_t));
{{^required}}if ({{{name}}}) { {{/required}}
if(!cJSON_IsString({{{name}}}))
{

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct {{classname}}_t {{classname}}_t;

View File

@ -9,6 +9,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct object_t {

View File

@ -1 +1 @@
4.3.0-SNAPSHOT
4.3.1-SNAPSHOT

View File

@ -4,6 +4,7 @@
#include "../include/list.h"
#include "../external/cJSON.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
#include "../model/api_response.h"
#include "../model/pet.h"

View File

@ -4,6 +4,7 @@
#include "../include/list.h"
#include "../external/cJSON.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
#include "../model/order.h"

View File

@ -4,6 +4,7 @@
#include "../include/list.h"
#include "../external/cJSON.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
#include "../model/user.h"

View File

@ -8,6 +8,7 @@
#include <stdint.h>
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct sslConfig_t {
char *clientCertFile; /* client certificate */
@ -22,21 +23,15 @@ typedef struct apiClient_t {
sslConfig_t *sslConfig;
void *dataReceived;
long response_code;
list_t *apiKeys;
list_t *apiKeys_api_key;
char *accessToken;
} apiClient_t;
typedef struct binary_t
{
uint8_t* data;
unsigned int len;
} binary_t;
apiClient_t* apiClient_create();
apiClient_t* apiClient_create_with_base_path(const char *basePath
, sslConfig_t *sslConfig
, list_t *apiKeys
, list_t *apiKeys_api_key
);
void apiClient_free(apiClient_t *apiClient);
@ -49,8 +44,4 @@ void sslConfig_free(sslConfig_t *sslConfig);
char *strReplace(char *orig, char *rep, char *with);
char *base64encode(const void *b64_encode_this, int encode_this_many_bytes);
char *base64decode(const void *b64_decode_this, int decode_this_many_bytes);
#endif // INCLUDE_API_CLIENT_H

View File

@ -0,0 +1,18 @@
#ifndef INCLUDE_BINARY_H
#define INCLUDE_BINARY_H
#include <stdint.h>
typedef struct binary_t
{
uint8_t* data;
unsigned int len;
} binary_t;
binary_t* instantiate_binary_t(char* data, int len);
char *base64encode(const void *b64_encode_this, int encode_this_many_bytes);
char *base64decode(const void *b64_decode_this, int decode_this_many_bytes, int *decoded_bytes);
#endif // INCLUDE_BINARY_H

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct api_response_t api_response_t;

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct category_t category_t;

View File

@ -9,6 +9,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct object_t {

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct order_t order_t;

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct pet_t pet_t;

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct tag_t tag_t;

View File

@ -11,6 +11,7 @@
#include "../external/cJSON.h"
#include "../include/list.h"
#include "../include/keyValuePair.h"
#include "../include/binary.h"
typedef struct user_t user_t;

View File

@ -3,9 +3,6 @@
#include <string.h>
#include <stdio.h>
#include "../include/apiClient.h"
#ifdef OPENSSL
#include "openssl/pem.h"
#endif
size_t writeDataCallback(void *buffer, size_t size, size_t nmemb, void *userp);
@ -16,7 +13,7 @@ apiClient_t *apiClient_create() {
apiClient->sslConfig = NULL;
apiClient->dataReceived = NULL;
apiClient->response_code = 0;
apiClient->apiKeys = NULL;
apiClient->apiKeys_api_key = NULL;
apiClient->accessToken = NULL;
return apiClient;
@ -24,7 +21,7 @@ apiClient_t *apiClient_create() {
apiClient_t *apiClient_create_with_base_path(const char *basePath
, sslConfig_t *sslConfig
, list_t *apiKeys
, list_t *apiKeys_api_key
) {
curl_global_init(CURL_GLOBAL_ALL);
apiClient_t *apiClient = malloc(sizeof(apiClient_t));
@ -42,16 +39,16 @@ apiClient_t *apiClient_create_with_base_path(const char *basePath
apiClient->dataReceived = NULL;
apiClient->response_code = 0;
if(apiKeys!= NULL) {
apiClient->apiKeys = list_create();
if(apiKeys_api_key!= NULL) {
apiClient->apiKeys_api_key = list_create();
listEntry_t *listEntry = NULL;
list_ForEach(listEntry, apiKeys) {
list_ForEach(listEntry, apiKeys_api_key) {
keyValuePair_t *pair = listEntry->data;
keyValuePair_t *pairDup = keyValuePair_create(strdup(pair->key), strdup(pair->value));
list_addElement(apiClient->apiKeys, pairDup);
list_addElement(apiClient->apiKeys_api_key, pairDup);
}
}else{
apiClient->apiKeys = NULL;
apiClient->apiKeys_api_key = NULL;
}
apiClient->accessToken = NULL;
@ -62,9 +59,9 @@ void apiClient_free(apiClient_t *apiClient) {
if(apiClient->basePath) {
free(apiClient->basePath);
}
if(apiClient->apiKeys) {
if(apiClient->apiKeys_api_key) {
listEntry_t *listEntry = NULL;
list_ForEach(listEntry, apiClient->apiKeys) {
list_ForEach(listEntry, apiClient->apiKeys_api_key) {
keyValuePair_t *pair = listEntry->data;
if(pair->key){
free(pair->key);
@ -74,7 +71,7 @@ void apiClient_free(apiClient_t *apiClient) {
}
keyValuePair_free(pair);
}
list_free(apiClient->apiKeys);
list_free(apiClient->apiKeys_api_key);
}
if(apiClient->accessToken) {
free(apiClient->accessToken);
@ -391,9 +388,9 @@ void apiClient_invoke(apiClient_t *apiClient,
}
// this would only be generated for apiKey authentication
if (apiClient->apiKeys != NULL)
if (apiClient->apiKeys_api_key != NULL)
{
list_ForEach(listEntry, apiClient->apiKeys) {
list_ForEach(listEntry, apiClient->apiKeys_api_key) {
keyValuePair_t *apiKey = listEntry->data;
if((apiKey->key != NULL) &&
(apiKey->value != NULL) )
@ -522,39 +519,3 @@ char *strReplace(char *orig, char *rep, char *with) {
return result;
}
char *sbi_base64encode (const void *b64_encode_this, int encode_this_many_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
BUF_MEM *mem_bio_mem_ptr; //Pointer to a "memory BIO" structure holding our base64 data.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory sink BIO.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-sink BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //No newlines every 64 characters or less.
BIO_write(b64_bio, b64_encode_this, encode_this_many_bytes); //Records base64 encoded data.
BIO_flush(b64_bio); //Flush data. Necessary for b64 encoding, because of pad characters.
BIO_get_mem_ptr(mem_bio, &mem_bio_mem_ptr); //Store address of mem_bio's memory structure.
BIO_set_close(mem_bio, BIO_NOCLOSE); //Permit access to mem_ptr after BIOs are destroyed.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
BUF_MEM_grow(mem_bio_mem_ptr, (*mem_bio_mem_ptr).length + 1); //Makes space for end null.
(*mem_bio_mem_ptr).data[(*mem_bio_mem_ptr).length] = '\0'; //Adds null-terminator to tail.
return (*mem_bio_mem_ptr).data; //Returns base-64 encoded data. (See: "buf_mem_st" struct).
#endif
}
char *sbi_base64decode (const void *b64_decode_this, int decode_this_many_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
char *base64_decoded = calloc( (decode_this_many_bytes*3)/4+1, sizeof(char) ); //+1 = null.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory source BIO.
BIO_write(mem_bio, b64_decode_this, decode_this_many_bytes); //Base64 data saved in source.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-source BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //Don't require trailing newlines.
int decoded_byte_index = 0; //Index where the next base64_decoded byte should be written.
while ( 0 < BIO_read(b64_bio, base64_decoded+decoded_byte_index, 1) ){ //Read byte-by-byte.
decoded_byte_index++; //Increment the index until read of BIO decoded data is complete.
} //Once we're done reading decoded data, BIO_read returns -1 even though there's no error.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
return base64_decoded; //Returns base-64 decoded data with trailing null terminator.
#endif
}

View File

@ -0,0 +1,58 @@
#include <stdlib.h>
#include <string.h>
#include "../include/binary.h"
#ifdef OPENSSL
#include "openssl/pem.h"
#endif
binary_t* instantiate_binary_t(char* data, int len) {
binary_t* ret = malloc(sizeof(struct binary_t));
ret->len=len;
ret->data = malloc(len);
memcpy(ret->data, data, len);
return ret;
}
char *base64encode (const void *b64_encode_this, int encode_this_many_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
BUF_MEM *mem_bio_mem_ptr; //Pointer to a "memory BIO" structure holding our base64 data.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory sink BIO.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-sink BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //No newlines every 64 characters or less.
BIO_write(b64_bio, b64_encode_this, encode_this_many_bytes); //Records base64 encoded data.
BIO_flush(b64_bio); //Flush data. Necessary for b64 encoding, because of pad characters.
BIO_get_mem_ptr(mem_bio, &mem_bio_mem_ptr); //Store address of mem_bio's memory structure.
BIO_set_close(mem_bio, BIO_NOCLOSE); //Permit access to mem_ptr after BIOs are destroyed.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
BUF_MEM_grow(mem_bio_mem_ptr, (*mem_bio_mem_ptr).length + 1); //Makes space for end null.
(*mem_bio_mem_ptr).data[(*mem_bio_mem_ptr).length] = '\0'; //Adds null-terminator to tail.
return (*mem_bio_mem_ptr).data; //Returns base-64 encoded data. (See: "buf_mem_st" struct).
#else // OPENSSL
#warning Data will not be encoded. If you want to use function "base64encode", please define "-DOPENSSL" when building the library.
return NULL;
#endif // OPENSSL
}
char *base64decode (const void *b64_decode_this, int decode_this_many_bytes, int *decoded_bytes){
#ifdef OPENSSL
BIO *b64_bio, *mem_bio; //Declares two OpenSSL BIOs: a base64 filter and a memory BIO.
char *base64_decoded = calloc( (decode_this_many_bytes*3)/4+1, sizeof(char) ); //+1 = null.
b64_bio = BIO_new(BIO_f_base64()); //Initialize our base64 filter BIO.
mem_bio = BIO_new(BIO_s_mem()); //Initialize our memory source BIO.
BIO_write(mem_bio, b64_decode_this, decode_this_many_bytes); //Base64 data saved in source.
BIO_push(b64_bio, mem_bio); //Link the BIOs by creating a filter-source BIO chain.
BIO_set_flags(b64_bio, BIO_FLAGS_BASE64_NO_NL); //Don't require trailing newlines.
int decoded_byte_index = 0; //Index where the next base64_decoded byte should be written.
while ( 0 < BIO_read(b64_bio, base64_decoded+decoded_byte_index, 1) ){ //Read byte-by-byte.
decoded_byte_index++; //Increment the index until read of BIO decoded data is complete.
} //Once we're done reading decoded data, BIO_read returns -1 even though there's no error.
BIO_free_all(b64_bio); //Destroys all BIOs in chain, starting with b64 (i.e. the 1st one).
*decoded_bytes = decoded_byte_index;
return base64_decoded; //Returns base-64 decoded data with trailing null terminator.
#else // OPENSSL
#warning Data will not be decoded. If you want to use function "base64decode", please define "-DOPENSSL" when building the library.
return NULL;
#endif // OPENSSL
}