diff options
Diffstat (limited to 'src/lib/hex-dec.c')
| -rw-r--r-- | src/lib/hex-dec.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/src/lib/hex-dec.c b/src/lib/hex-dec.c new file mode 100644 index 0000000..1c68001 --- /dev/null +++ b/src/lib/hex-dec.c @@ -0,0 +1,38 @@ +/* Copyright (c) 2005-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "hex-dec.h" + +void dec2hex(unsigned char *hexstr, uintmax_t dec, unsigned int hexstr_size) +{ + unsigned int i; + + for (i = 0; i < hexstr_size; i++) { + unsigned int value = dec & 0x0f; + if (value < 10) + hexstr[hexstr_size-i-1] = value + '0'; + else + hexstr[hexstr_size-i-1] = value - 10 + 'A'; + dec >>= 4; + } +} + +uintmax_t hex2dec(const unsigned char *data, unsigned int len) +{ + unsigned int i; + uintmax_t value = 0; + + for (i = 0; i < len; i++) { + value = value*0x10; + if (data[i] >= '0' && data[i] <= '9') + value += data[i]-'0'; + else if (data[i] >= 'A' && data[i] <= 'F') + value += data[i]-'A' + 10; + else if (data[i] >= 'a' && data[i] <= 'f') + value += data[i]-'a' + 10; + else + return 0; + } + return value; +} + |