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Add support for encode/decode base64 binary data

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This commit is contained in:
vemax78 2013-08-18 22:19:56 +02:00
parent d34e98fc2c
commit d3f1f50c1f
2 changed files with 60 additions and 24 deletions
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78
src/ac/ac_soap.c
View File

@ -733,45 +733,64 @@ void ac_soapclient_free_response(struct ac_soap_response* response) {
} }
/* */ /* */
void ac_base64_string_encode(const char* decode, char* encode) { int ac_base64_binary_encode(const char* plain, int length, char* encoded) {
ASSERT(decode != NULL); int result = 0;
ASSERT(encode != NULL);
while (*decode) { ASSERT(plain != NULL);
int len = (decode[1] ? (decode[2] ? 3 : 2) : 1); ASSERT(encoded != NULL);
while (length > 0) {
int len = ((length > 1) ? ((length > 2) ? 3 : 2) : 1);
/* Encode block */ /* Encode block */
encode[0] = l_encodeblock[decode[0] >> 2]; encoded[0] = l_encodeblock[plain[0] >> 2];
encode[1] = l_encodeblock[((decode[0] & 0x03) << 4) | ((decode[1] & 0xf0) >> 4)]; encoded[1] = l_encodeblock[((plain[0] & 0x03) << 4) | ((plain[1] & 0xf0) >> 4)];
encode[2] = (len > 1 ? l_encodeblock[((decode[1] & 0x0f) << 2) | ((decode[2] & 0xc0) >> 6)] : '='); encoded[2] = (len > 1 ? l_encodeblock[((plain[1] & 0x0f) << 2) | ((plain[2] & 0xc0) >> 6)] : '=');
encode[3] = (len > 2 ? l_encodeblock[decode[2] & 0x3f] : '='); encoded[3] = (len > 2 ? l_encodeblock[plain[2] & 0x3f] : '=');
/* Next block */ /* Next block */
decode += len; plain += len;
encode += 4; length -= len;
encoded += 4;
result += 4;
} }
/* Terminate string */ return result;
*encode = 0;
} }
/* */ /* */
void ac_base64_string_decode(const char* encode, char* decode) { void ac_base64_string_encode(const char* plain, char* encoded) {
int result;
ASSERT(plain != NULL);
ASSERT(encoded != NULL);
/* Encode base64 */
result = ac_base64_binary_encode(plain, strlen(plain), encoded);
/* Terminate string */
encoded[result] = 0;
}
/* */
int ac_base64_binary_decode(const char* encoded, int length, char* plain) {
int i; int i;
char bufdec[3]; char bufdec[3];
int result = 0;
ASSERT(encode != NULL); ASSERT(encoded != NULL);
ASSERT(decode != NULL); ASSERT(plain != NULL);
while (*encode) { while (length > 0) {
int len = 0; int len = 0;
char bufenc[4] = { 0, 0, 0, 0 }; char bufenc[4] = { 0, 0, 0, 0 };
for (i = 0; i < 4 && *encode; i++) { for (i = 0; i < 4 && (length > 0); i++) {
char element = 0; char element = 0;
while (*encode && !element) { while ((length > 0) && !element) {
element = *encode++; element = *encoded++;
element = (((element < 43) || (element > 122)) ? 0 : l_decodeblock[element - 43]); element = (((element < 43) || (element > 122)) ? 0 : l_decodeblock[element - 43]);
length--;
} }
if (element) { if (element) {
@ -786,11 +805,26 @@ void ac_base64_string_decode(const char* encode, char* decode) {
bufdec[2] = (((bufenc[2] << 6) & 0xc0) | bufenc[3]); bufdec[2] = (((bufenc[2] << 6) & 0xc0) | bufenc[3]);
for (i = 0; i < len - 1; i++) { for (i = 0; i < len - 1; i++) {
*decode++ = bufdec[i]; *plain++ = bufdec[i];
result++;
} }
} }
} }
/* Terminate string */ /* Terminate string */
*decode = 0; return result;
}
/* */
void ac_base64_string_decode(const char* encoded, char* plain) {
int result;
ASSERT(encoded != NULL);
ASSERT(plain != NULL);
/* Decode base64 */
result = ac_base64_binary_decode(encoded, strlen(encoded), plain);
/* Terminate string */
plain[result] = 0;
} }

6
src/ac/ac_soap.h
View File

@ -104,7 +104,9 @@ void ac_soapclient_free_response(struct ac_soap_response* response);
/* Base64 */ /* Base64 */
#define AC_BASE64_ENCODE_LENGTH(x) ((((x) + 2) / 3) * 4 + 1) #define AC_BASE64_ENCODE_LENGTH(x) ((((x) + 2) / 3) * 4 + 1)
#define AC_BASE64_DECODE_LENGTH(x) (((x) / 4) * 3 + 1) #define AC_BASE64_DECODE_LENGTH(x) (((x) / 4) * 3 + 1)
void ac_base64_string_encode(const char* decode, char* encode); void ac_base64_string_encode(const char* plain, char* encoded);
void ac_base64_string_decode(const char* encode, char* decode); int ac_base64_binary_encode(const char* plain, int length, char* encoded);
void ac_base64_string_decode(const char* encoded, char* plain);
int ac_base64_binary_decode(const char* encoded, int length, char* plain);
#endif /* __AC_SOAP_HEADER__ */ #endif /* __AC_SOAP_HEADER__ */