From 8bbef2865455754425a84b86680a89bff8aa7691 Mon Sep 17 00:00:00 2001
From: gcontini <1121667+gcontini@users.noreply.github.com>
Date: 周六, 19 10月 2019 08:50:45 +0800
Subject: [PATCH] issue #64 , issue #56 (part)
---
src/library/base/base64.h | 140 ++--------------------------------------------
1 files changed, 7 insertions(+), 133 deletions(-)
diff --git a/src/library/base/base64.h b/src/library/base/base64.h
index 27f49cd..9a353df 100644
--- a/src/library/base/base64.h
+++ b/src/library/base/base64.h
@@ -31,140 +31,14 @@
#ifndef BASE64_H
#define BASE64_H
-#include <stdio.h>
-#include <stdlib.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
-const static char* b64 =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+unsigned char* unbase64(const char* ascii, int len, int *flen);
+char* base64(const void* binaryData, int len, int *flen);
-// maps A=>0,B=>1..
-const static unsigned char unb64[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //10
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //20
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //30
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //40
- 0, 0, 0, 62, 0, 0, 0, 63, 52, 53, //50
- 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, //60
- 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, //70
- 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, //80
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, //90
- 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, //100
- 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, //110
- 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, //120
- 49, 50, 51, 0, 0, 0, 0, 0, 0, 0, //130
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //140
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //150
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //160
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //170
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //180
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //190
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //200
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //210
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //220
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //230
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //240
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, //250
- 0, 0, 0, 0, 0, 0, }; // This array has 255 elements
-
-// Converts binary data of length=len to base64 characters.
-// Length of the resultant string is stored in flen
-// (you must pass pointer flen).
-char* base64(const void* binaryData, int len, int *flen) {
- const unsigned char* bin = (const unsigned char*) binaryData;
- char* res;
-
- int rc = 0; // result counter
- int byteNo; // I need this after the loop
-
- int modulusLen = len % 3;
- int pad = ((modulusLen & 1) << 1) + ((modulusLen & 2) >> 1); // 2 gives 1 and 1 gives 2, but 0 gives 0.
-
- *flen = 4 * (len + pad) / 3;
- res = (char*) malloc(*flen + 1); // and one for the null
- if (!res) {
- puts("ERROR: base64 could not allocate enough memory.");
- puts("I must stop because I could not get enough");
- return 0;
- }
-
- for (byteNo = 0; byteNo <= len - 3; byteNo += 3) {
- unsigned char BYTE0 = bin[byteNo];
- unsigned char BYTE1 = bin[byteNo + 1];
- unsigned char BYTE2 = bin[byteNo + 2];
- res[rc++] = b64[BYTE0 >> 2];
- res[rc++] = b64[((0x3 & BYTE0) << 4) + (BYTE1 >> 4)];
- res[rc++] = b64[((0x0f & BYTE1) << 2) + (BYTE2 >> 6)];
- res[rc++] = b64[0x3f & BYTE2];
- }
-
- if (pad == 2) {
- res[rc++] = b64[bin[byteNo] >> 2];
- res[rc++] = b64[(0x3 & bin[byteNo]) << 4];
- res[rc++] = '=';
- res[rc++] = '=';
- } else if (pad == 1) {
- res[rc++] = b64[bin[byteNo] >> 2];
- res[rc++] = b64[((0x3 & bin[byteNo]) << 4) + (bin[byteNo + 1] >> 4)];
- res[rc++] = b64[(0x0f & bin[byteNo + 1]) << 2];
- res[rc++] = '=';
- }
-
- res[rc] = 0; // NULL TERMINATOR! ;)
- return res;
+#ifdef __cplusplus
}
-
-unsigned char* unbase64(const char* ascii, int len, int *flen) {
- const unsigned char *safeAsciiPtr = (const unsigned char*) ascii;
- unsigned char *bin;
- int cb = 0;
- int charNo;
- int pad = 0;
-
- if (len < 2) { // 2 accesses below would be OOB.
- // catch empty string, return NULL as result.
- puts(
- "ERROR: You passed an invalid base64 string (too short). You get NULL back.");
- *flen = 0;
- return 0;
- }
- if (safeAsciiPtr[len - 1] == '=')
- ++pad;
- if (safeAsciiPtr[len - 2] == '=')
- ++pad;
-
- *flen = 3 * len / 4 - pad;
- bin = (unsigned char*) malloc(*flen);
- if (!bin) {
- puts("ERROR: unbase64 could not allocate enough memory.");
- puts("I must stop because I could not get enough");
- return 0;
- }
-
- for (charNo = 0; charNo <= len - 4 - pad; charNo += 4) {
- int A = unb64[safeAsciiPtr[charNo]];
- int B = unb64[safeAsciiPtr[charNo + 1]];
- int C = unb64[safeAsciiPtr[charNo + 2]];
- int D = unb64[safeAsciiPtr[charNo + 3]];
-
- bin[cb++] = (A << 2) | (B >> 4);
- bin[cb++] = (B << 4) | (C >> 2);
- bin[cb++] = (C << 6) | (D);
- }
-
- if (pad == 1) {
- int A = unb64[safeAsciiPtr[charNo]];
- int B = unb64[safeAsciiPtr[charNo + 1]];
- int C = unb64[safeAsciiPtr[charNo + 2]];
-
- bin[cb++] = (A << 2) | (B >> 4);
- bin[cb++] = (B << 4) | (C >> 2);
- } else if (pad == 2) {
- int A = unb64[safeAsciiPtr[charNo]];
- int B = unb64[safeAsciiPtr[charNo + 1]];
-
- bin[cb++] = (A << 2) | (B >> 4);
- }
-
- return bin;
-}
-
+#endif
#endif
--
Gitblit v1.9.1