#include "../src/logger.h"
#include "utils.h"
-const char hexadecimals[] = "0123456789ABCDEF";
+static const char hexadecimals[] = "0123456789ABCDEF";
+static const char base64imals[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-int charhex2bin(char c) {
+static int charhex2bin(char c) {
if(isdigit(c))
return c - '0';
else
return toupper(c) - 'A' + 10;
}
+static int charb64decode(char c) {
+ if(c >= 'a')
+ return c - 'a' + 26;
+ else if(c >= 'A')
+ return c - 'A';
+ else if(c >= '0')
+ return c - '0' + 52;
+ else if(c == '+')
+ return 62;
+ else
+ return 63;
+}
-void hex2bin(char *src, char *dst, int length) {
+int hex2bin(const char *src, char *dst, int length) {
int i;
- for(i = 0; i < length; i++)
+ for(i = 0; i < length && src[i * 2] && src[i * 2 + 1]; i++)
dst[i] = charhex2bin(src[i * 2]) * 16 + charhex2bin(src[i * 2 + 1]);
+ return i;
}
-void bin2hex(char *src, char *dst, int length) {
+int bin2hex(const char *src, char *dst, int length) {
int i;
for(i = length - 1; i >= 0; i--) {
dst[i * 2 + 1] = hexadecimals[(unsigned char) src[i] & 15];
dst[i * 2] = hexadecimals[(unsigned char) src[i] >> 4];
}
+ dst[length * 2] = 0;
+ return length * 2;
+}
+
+int b64decode(const char *src, char *dst, int length) {
+ int i;
+ uint32_t triplet = 0;
+ unsigned char *udst = (unsigned char *)dst;
+
+ for(i = 0; i < length / 3 * 4 && src[i]; i++) {
+ triplet |= charb64decode(src[i]) << (6 * (i & 3));
+ if((i & 3) == 3) {
+ udst[0] = triplet & 0xff; triplet >>= 8;
+ udst[1] = triplet & 0xff; triplet >>= 8;
+ udst[2] = triplet;
+ triplet = 0;
+ udst += 3;
+ }
+ }
+ if((i & 3) == 3) {
+ udst[0] = triplet & 0xff; triplet >>= 8;
+ udst[1] = triplet & 0xff;
+ return i / 4 * 3 + 2;
+ } else if((i & 3) == 2) {
+ udst[0] = triplet & 0xff;
+ return i / 4 * 3 + 1;
+ } else {
+ return i / 4 * 3;
+ }
+}
+
+int b64encode(const char *src, char *dst, int length) {
+ uint32_t triplet;
+ const unsigned char *usrc = (unsigned char *)src;
+ int si = length / 3 * 3;
+ int di = length / 3 * 4;
+
+ switch(length % 3) {
+ case 2:
+ triplet = usrc[si] | usrc[si + 1] << 8;
+ dst[di] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 1] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 2] = base64imals[triplet];
+ dst[di + 3] = 0;
+ length = di + 2;
+ break;
+ case 1:
+ triplet = usrc[si];
+ dst[di] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 1] = base64imals[triplet];
+ dst[di + 2] = 0;
+ length = di + 1;
+ break;
+ default:
+ dst[di] = 0;
+ length = di;
+ break;
+ }
+
+ while(si > 0) {
+ di -= 4;
+ si -= 3;
+ triplet = usrc[si] | usrc[si + 1] << 8 | usrc[si + 2] << 16;
+ dst[di] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 1] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 2] = base64imals[triplet & 63]; triplet >>= 6;
+ dst[di + 3] = base64imals[triplet];
+ }
+
+ return length;
}
#if defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
#endif
const char *winerror(int err) {
- static char buf[1024], *newline;
+ static char buf[1024], *ptr;
+
+ ptr = buf + sprintf(buf, "(%d) ", err);
if (!FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
- NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), buf, sizeof(buf), NULL)) {
+ NULL, err, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), ptr, sizeof(buf) - (ptr - buf), NULL)) {
strncpy(buf, "(unable to format errormessage)", sizeof(buf));
};
- if((newline = strchr(buf, '\r')))
- *newline = '\0';
+ if((ptr = strchr(buf, '\r')))
+ *ptr = '\0';
return buf;
}
#endif
-unsigned int bitfield_to_int(void *bitfield, size_t size) {
+unsigned int bitfield_to_int(const void *bitfield, size_t size) {
unsigned int value = 0;
if(size > sizeof value)
size = sizeof value;