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Add base64 string encode/decode functions

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This commit is contained in:
vemax78 2013-07-30 22:05:32 +02:00
parent 6106db6ece
commit 9b3dc8152b
2 changed files with 79 additions and 0 deletions
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73
src/ac/ac_soap.c
View File

@ -11,6 +11,16 @@
#define HTTP_RESPONSE_BODY 2
#define HTTP_RESPONSE_ERROR 3
/* */
static const char l_encodeblock[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const char l_decodeblock[] =
"\x3f\x00\x00\x00\x40\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x00"
"\x00\x00\x00\x00\x00\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a"
"\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a"
"\x00\x00\x00\x00\x00\x00\x1b\x1c\x1d\x1e\x1f\x20\x21\x22\x23\x24"
"\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f\x30\x31\x32\x33\x34";
/* */
xmlNodePtr ac_xml_get_children(xmlNodePtr parent) {
xmlNodePtr children;
@ -691,3 +701,66 @@ void ac_soapclient_free_response(struct ac_soap_response* response) {
capwap_free(response);
}
/* */
void ac_base64_string_encode(const char* decode, char* encode) {
ASSERT(decode != NULL);
ASSERT(encode != NULL);
while (*decode) {
int len = (decode[1] ? (decode[2] ? 3 : 2) : 1);
/* Encode block */
encode[0] = l_encodeblock[decode[0] >> 2];
encode[1] = l_encodeblock[((decode[0] & 0x03) << 4) | ((decode[1] & 0xf0) >> 4)];
encode[2] = (len > 1 ? l_encodeblock[((decode[1] & 0x0f) << 2) | ((decode[2] & 0xc0) >> 6)] : '=');
encode[3] = (len > 2 ? l_encodeblock[decode[2] & 0x3f] : '=');
/* Next block */
decode += len;
encode += 4;
}
/* Terminate string */
*encode = 0;
}
/* */
void ac_base64_string_decode(const char* encode, char* decode) {
int i;
char bufdec[3];
ASSERT(encode != NULL);
ASSERT(decode != NULL);
while (*encode) {
int len = 0;
char bufenc[4] = { 0, 0, 0, 0 };
for (i = 0; i < 4 && *encode; i++) {
char element = 0;
while (*encode && !element) {
element = *encode++;
element = (((element < 43) || (element > 122)) ? 0 : l_decodeblock[element - 43]);
}
if (element) {
len++;
bufenc[i] = element - 1;
}
}
if (len) {
bufdec[0] = (bufenc[0] << 2 | bufenc[1] >> 4);
bufdec[1] = (bufenc[1] << 4 | bufenc[2] >> 2);
bufdec[2] = (((bufenc[2] << 6) & 0xc0) | bufenc[3]);
for (i = 0; i < len - 1; i++) {
*decode++ = bufdec[i];
}
}
}
/* Terminate string */
*decode = 0;
}

6
src/ac/ac_soap.h
View File

@ -87,4 +87,10 @@ void ac_soapclient_close_request(struct ac_http_soap_request* httprequest, int c
/* Response */
void ac_soapclient_free_response(struct ac_soap_response* response);
/* Base64 */
#define AC_BASE64_ENCODE_LENGTH(x) ((((x) + 2) / 3) * 4 + 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_decode(const char* encode, char* decode);
#endif /* __AC_SOAP_HEADER__ */