+++ /dev/null
-
-#if defined(__linux__)
-#include <linux/errno.h>
-#else
-#include <sys/errno.h>
-#endif
-
-/*
- * base64 encode/decode.
- */
-
-const char *pem_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-static int encode_bits(int c)
-{
- return pem_key[c];
-}
-
-static int decode_bits(char c)
-{
- if (c >= 'A' && c <= 'Z')
- return c - 'A';
- if (c >= 'a' && c <= 'z')
- return c - 'a' + 26;
- if (c >= '0' && c <= '9')
- return c - '0' + 52;
- if (c == '+' || c == '-')
- return 62;
- if (c == '/' || c == '_')
- return 63;
- if (c == '=')
- return 0; /* just non-negative, please */
- return -EINVAL;
-}
-
-static int set_str_val(char **pdst, const char *end, char c)
-{
- if (*pdst < end) {
- char *p = *pdst;
- *p = c;
- (*pdst)++;
- } else
- return -ERANGE;
-
- return 0;
-}
-
-int ceph_armor_line_break(char *dst, const char *dst_end, const char *src, const char *end, int line_width)
-{
- int olen = 0;
- int line = 0;
-
-#define SET_DST(c) do { \
- int __ret = set_str_val(&dst, dst_end, c); \
- if (__ret < 0) \
- return __ret; \
-} while (0);
-
- while (src < end) {
- unsigned char a;
-
- a = *src++;
- SET_DST(encode_bits(a >> 2));
- if (src < end) {
- unsigned char b;
- b = *src++;
- SET_DST(encode_bits(((a & 3) << 4) | (b >> 4)));
- if (src < end) {
- unsigned char c;
- c = *src++;
- SET_DST(encode_bits(((b & 15) << 2) |
- (c >> 6)));
- SET_DST(encode_bits(c & 63));
- } else {
- SET_DST(encode_bits((b & 15) << 2));
- SET_DST('=');
- }
- } else {
- SET_DST(encode_bits(((a & 3) << 4)));
- SET_DST('=');
- SET_DST('=');
- }
- olen += 4;
- line += 4;
- if (line_width && line == line_width) {
- line = 0;
- SET_DST('\n');
- olen++;
- }
- }
- return olen;
-}
-
-int ceph_armor(char *dst, const char *dst_end, const char *src, const char *end)
-{
- return ceph_armor_line_break(dst, dst_end, src, end, 0);
-}
-
-int ceph_unarmor(char *dst, const char *dst_end, const char *src, const char *end)
-{
- int olen = 0;
-
- while (src < end) {
- int a, b, c, d;
-
- if (src[0] == '\n') {
- src++;
- continue;
- }
-
- if (src + 4 > end)
- return -EINVAL;
- a = decode_bits(src[0]);
- b = decode_bits(src[1]);
- c = decode_bits(src[2]);
- d = decode_bits(src[3]);
- if (a < 0 || b < 0 || c < 0 || d < 0)
- return -EINVAL;
-
- SET_DST((a << 2) | (b >> 4));
- if (src[2] == '=')
- return olen + 1;
- SET_DST(((b & 15) << 4) | (c >> 2));
- if (src[3] == '=')
- return olen + 2;
- SET_DST(((c & 3) << 6) | d);
- olen += 3;
- src += 4;
- }
- return olen;
-}