forked from Mirrors/freeswitch
50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
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#include <string.h>
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#include "int.h"
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#include "xmlrpc-c/base64_int.h"
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void
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xmlrpc_base64Encode(const char * const chars,
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char * const base64) {
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/* Conversion table. */
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static char tbl[64] = {
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'A','B','C','D','E','F','G','H',
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'I','J','K','L','M','N','O','P',
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'Q','R','S','T','U','V','W','X',
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'Y','Z','a','b','c','d','e','f',
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'g','h','i','j','k','l','m','n',
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'o','p','q','r','s','t','u','v',
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'w','x','y','z','0','1','2','3',
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'4','5','6','7','8','9','+','/'
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};
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unsigned int i;
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uint32_t length;
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char * p;
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const char * s;
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length = strlen(chars); /* initial value */
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s = &chars[0]; /* initial value */
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p = &base64[0]; /* initial value */
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/* Transform the 3x8 bits to 4x6 bits, as required by base64. */
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for (i = 0; i < length; i += 3) {
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*p++ = tbl[s[0] >> 2];
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*p++ = tbl[((s[0] & 3) << 4) + (s[1] >> 4)];
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*p++ = tbl[((s[1] & 0xf) << 2) + (s[2] >> 6)];
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*p++ = tbl[s[2] & 0x3f];
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s += 3;
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}
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/* Pad the result if necessary... */
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if (i == length + 1)
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*(p - 1) = '=';
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else if (i == length + 2)
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*(p - 1) = *(p - 2) = '=';
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/* ...and zero-terminate it. */
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*p = '\0';
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}
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