Commit 7541b068 authored by Pierre Téchoueyres's avatar Pierre Téchoueyres Committed by Eli Zaretskii

Add support for base64url variant of base-64 encoding/decoding

Implement the RFC4648 variant of base64 encoding used by URLs.
* doc/lispref/text.texi (base64url-encode-region,
base64url-encode-string): Document new functions.
(base64-decode-region, base64-decode-string): Document new optional
parameter 'base64url' used to use url variant when decoding data.

* src/fns.c (base64url-encode-region, base64url-encode-region): New
functions to manage url variant.
(base64-decode-region, base64-decode-string): Add optional
parameter to indicate use of url-variant.
(base64_encode_region_1, base64_encode_string_1): Internal functions
with extracted code from 'base64_encode_region' and
'base64_encode_string' and optional parameters to manage padding and
url variant.
(base64-encode-region, base64-encode-string) : Use
base64_encode_region_1 and base64_encode_string_1.
(base64-encode-1): Add parameters to manage padding and url variant.
(base64-decode-1): Add parameter to manage url variant.

* test/src/fns-tests.el (fns-tests--with-region): New helper macro to
test region variant of base64 encode / decode functions.
(fns-tests--string-repeat): Helper function used in base64 tests.
(fns-tests-base64-encode-region, fns-tests-base64-encode-string):
Tests for standard base64 function.
(fns-test-base64url-encode-region,
fns-test-base64url-encode-string): Tests for url variant.
(fns-tests-base64-decode-string): Tests for decoding part.
parent faf10bd8
......@@ -4541,7 +4541,7 @@ Internet informational document describing a standard. RFCs are
usually written by technical experts acting on their own initiative,
and are traditionally written in a pragmatic, experience-driven
manner.
}2045. This section describes the functions for
}2045 and also in RFC4648. This section describes the functions for
converting to and from this code.
@deffn Command base64-encode-region beg end &optional no-line-break
......@@ -4558,6 +4558,22 @@ text, to avoid overlong lines. However, if the optional argument
the output is just one long line.
@end deffn
@deffn Command base64url-encode-region beg end &optional no-pad
This function converts the region from @var{beg} to @var{end} into base
64 code. It returns the length of the encoded text. An error is
signaled if a character in the region is multibyte, i.e., in a
multibyte buffer the region must contain only characters from the
charsets @code{ascii}, @code{eight-bit-control} and
@code{eight-bit-graphic}.
Contrary to the function @code{base64-encode-region}, this function
doesnt inserts newline characters into the encoded text, so the output
is just one long line.
If the optional argument @var{no-pad} is non-@code{nil} then padding
(@code{=}) isn't generated.
@end deffn
@defun base64-encode-string string &optional no-line-break
This function converts the string @var{string} into base 64 code. It
returns a string containing the encoded text. As for
......@@ -4570,20 +4586,40 @@ text, to avoid overlong lines. However, if the optional argument
the result string is just one long line.
@end defun
@deffn Command base64-decode-region beg end
@defun base64url-encode-string string &optional no-pad
This function converts the string @var{string} into base 64 url code
(see RFC4648). It returns a string containing the encoded text. As
for @code{base64url-encode-region}, an error is signaled if a
character in the string is multibyte.
Contrary to @code{base64-encode-string}, this function doesnt inserts
newline characters into the encoded text, so the result string is just
one long line.
If the optional argument @var{no-pad} is non-@code{nil} then padding
(@code{=}) isn't generated.
@end defun
@deffn Command base64-decode-region beg end &optional base64url
This function converts the region from @var{beg} to @var{end} from base
64 code into the corresponding decoded text. It returns the length of
the decoded text.
The decoding functions ignore newline characters in the encoded text.
If optional argument @var{base64url} is is non-@code{nil} then padding
become optionnal and url variant is used (see RFC4648).
@end deffn
@defun base64-decode-string string
@defun base64-decode-string string &optional base64url
This function converts the string @var{string} from base 64 code into
the corresponding decoded text. It returns a unibyte string containing the
decoded text.
The decoding functions ignore newline characters in the encoded text.
If optional argument @var{base64url} is is non-@code{nil} then padding
become optionnal and url variant is used (see RFC4648).
@end defun
@node Checksum/Hash
......
......@@ -3189,7 +3189,7 @@ The data read from the system are decoded using `locale-coding-system'. */)
#define IS_ASCII(Character) \
((Character) < 128)
#define IS_BASE64(Character) \
(IS_ASCII (Character) && base64_char_to_value[Character] >= 0)
(IS_ASCII (Character) && b64_char_to_value[Character] >= 0)
#define IS_BASE64_IGNORABLE(Character) \
((Character) == ' ' || (Character) == '\t' || (Character) == '\n' \
|| (Character) == '\f' || (Character) == '\r')
......@@ -3222,6 +3222,17 @@ static const char base64_value_to_char[64] =
'8', '9', '+', '/' /* 60-63 */
};
static const char base64url_value_to_char[64] =
{
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', /* 0- 9 */
'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', /* 10-19 */
'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', /* 20-29 */
'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', /* 30-39 */
'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', /* 40-49 */
'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', /* 50-59 */
'8', '9', '-', '_' /* 60-63 */
};
/* Table of base64 values for first 128 characters. */
static const short base64_char_to_value[128] =
{
......@@ -3240,6 +3251,23 @@ static const short base64_char_to_value[128] =
49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */
};
static const short base64url_char_to_value[128] =
{
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0- 9 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 10- 19 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 20- 29 */
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 30- 39 */
-1, -1, -1, -1, -1, 62, -1, -1, 52, 53, /* 40- 49 */
54, 55, 56, 57, 58, 59, 60, 61, -1, -1, /* 50- 59 */
-1, -1, -1, -1, -1, 0, 1, 2, 3, 4, /* 60- 69 */
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 70- 79 */
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, /* 80- 89 */
25, -1, -1, -1, -1, 63, -1, 26, 27, 28, /* 90- 99 */
29, 30, 31, 32, 33, 34, 35, 36, 37, 38, /* 100-109 */
39, 40, 41, 42, 43, 44, 45, 46, 47, 48, /* 110-119 */
49, 50, 51, -1, -1, -1, -1, -1 /* 120-127 */
};
/* The following diagram shows the logical steps by which three octets
get transformed into four base64 characters.
......@@ -3259,9 +3287,17 @@ static const short base64_char_to_value[128] =
base64 characters. */
static ptrdiff_t base64_encode_1 (const char *, char *, ptrdiff_t, bool, bool);
static ptrdiff_t base64_encode_1 (const char *, char *, ptrdiff_t, bool, bool,
bool, bool);
static ptrdiff_t base64_decode_1 (const char *, char *, ptrdiff_t, bool,
ptrdiff_t *);
bool, ptrdiff_t *);
Lisp_Object base64_encode_region_1 (Lisp_Object, Lisp_Object, bool,
bool, bool);
Lisp_Object base64_encode_string_1(Lisp_Object, bool,
bool, bool);
DEFUN ("base64-encode-region", Fbase64_encode_region, Sbase64_encode_region,
2, 3, "r",
......@@ -3270,6 +3306,26 @@ Return the length of the encoded text.
Optional third argument NO-LINE-BREAK means do not break long lines
into shorter lines. */)
(Lisp_Object beg, Lisp_Object end, Lisp_Object no_line_break)
{
return base64_encode_region_1(beg, end, NILP (no_line_break), true, false);
}
DEFUN ("base64url-encode-region", Fbase64url_encode_region, Sbase64url_encode_region,
2, 3, "r",
doc: /* Base64url-encode the region between BEG and END.
Return the length of the encoded text.
Optional second argument NO-PAD means do not add padding char =.
This is the variant defined in RFC4648. */)
(Lisp_Object beg, Lisp_Object end, Lisp_Object no_pad)
{
return base64_encode_region_1(beg, end, false, NILP(no_pad), true);
}
Lisp_Object
base64_encode_region_1 (Lisp_Object beg, Lisp_Object end, bool line_break,
bool pad, bool base64url)
{
char *encoded;
ptrdiff_t allength, length;
......@@ -3292,7 +3348,8 @@ into shorter lines. */)
encoded = SAFE_ALLOCA (allength);
encoded_length = base64_encode_1 ((char *) BYTE_POS_ADDR (ibeg),
encoded, length, NILP (no_line_break),
encoded, length, line_break,
pad, base64url,
!NILP (BVAR (current_buffer, enable_multibyte_characters)));
if (encoded_length > allength)
emacs_abort ();
......@@ -3330,6 +3387,26 @@ Optional second argument NO-LINE-BREAK means do not break long lines
into shorter lines. */)
(Lisp_Object string, Lisp_Object no_line_break)
{
return base64_encode_string_1(string, NILP (no_line_break), true, false);
}
DEFUN ("base64url-encode-string", Fbase64url_encode_string, Sbase64url_encode_string,
1, 2, 0,
doc: /* Base64url-encode STRING and return the result.
Optional second argument NO-PAD means do not add padding char =.
This is the variant defined in RFC4648. */)
(Lisp_Object string, Lisp_Object no_pad)
{
return base64_encode_string_1(string, false, NILP(no_pad), true);
}
Lisp_Object
base64_encode_string_1(Lisp_Object string, bool line_break,
bool pad, bool base64url)
{
ptrdiff_t allength, length, encoded_length;
char *encoded;
Lisp_Object encoded_string;
......@@ -3348,7 +3425,8 @@ into shorter lines. */)
encoded = SAFE_ALLOCA (allength);
encoded_length = base64_encode_1 (SSDATA (string),
encoded, length, NILP (no_line_break),
encoded, length, line_break,
pad, base64url,
STRING_MULTIBYTE (string));
if (encoded_length > allength)
emacs_abort ();
......@@ -3367,7 +3445,8 @@ into shorter lines. */)
static ptrdiff_t
base64_encode_1 (const char *from, char *to, ptrdiff_t length,
bool line_break, bool multibyte)
bool line_break, bool pad, bool base64url,
bool multibyte)
{
int counter = 0;
ptrdiff_t i = 0;
......@@ -3375,6 +3454,7 @@ base64_encode_1 (const char *from, char *to, ptrdiff_t length,
int c;
unsigned int value;
int bytes;
char const *b64_value_to_char = (base64url) ? base64url_value_to_char : base64_value_to_char;
while (i < length)
{
......@@ -3405,16 +3485,19 @@ base64_encode_1 (const char *from, char *to, ptrdiff_t length,
/* Process first byte of a triplet. */
*e++ = base64_value_to_char[0x3f & c >> 2];
*e++ = b64_value_to_char[0x3f & c >> 2];
value = (0x03 & c) << 4;
/* Process second byte of a triplet. */
if (i == length)
{
*e++ = base64_value_to_char[value];
*e++ = b64_value_to_char[value];
if (pad)
{
*e++ = '=';
*e++ = '=';
}
break;
}
......@@ -3430,15 +3513,18 @@ base64_encode_1 (const char *from, char *to, ptrdiff_t length,
else
c = from[i++];
*e++ = base64_value_to_char[value | (0x0f & c >> 4)];
*e++ = b64_value_to_char[value | (0x0f & c >> 4)];
value = (0x0f & c) << 2;
/* Process third byte of a triplet. */
if (i == length)
{
*e++ = base64_value_to_char[value];
*e++ = b64_value_to_char[value];
if (pad)
{
*e++ = '=';
}
break;
}
......@@ -3454,8 +3540,8 @@ base64_encode_1 (const char *from, char *to, ptrdiff_t length,
else
c = from[i++];
*e++ = base64_value_to_char[value | (0x03 & c >> 6)];
*e++ = base64_value_to_char[0x3f & c];
*e++ = b64_value_to_char[value | (0x03 & c >> 6)];
*e++ = b64_value_to_char[0x3f & c];
}
return e - to;
......@@ -3463,11 +3549,13 @@ base64_encode_1 (const char *from, char *to, ptrdiff_t length,
DEFUN ("base64-decode-region", Fbase64_decode_region, Sbase64_decode_region,
2, 2, "r",
2, 3, "r",
doc: /* Base64-decode the region between BEG and END.
Return the length of the decoded text.
If the region can't be decoded, signal an error and don't modify the buffer. */)
(Lisp_Object beg, Lisp_Object end)
If the region can't be decoded, signal an error and don't modify the buffer.
Optional third argument BASE64URL define if base64Url variant will be used
see RFC4648. */)
(Lisp_Object beg, Lisp_Object end, Lisp_Object base64url)
{
ptrdiff_t ibeg, iend, length, allength;
char *decoded;
......@@ -3492,7 +3580,7 @@ If the region can't be decoded, signal an error and don't modify the buffer. */
move_gap_both (XFIXNAT (beg), ibeg);
decoded_length = base64_decode_1 ((char *) BYTE_POS_ADDR (ibeg),
decoded, length,
decoded, length, !NILP (base64url),
multibyte, &inserted_chars);
if (decoded_length > allength)
emacs_abort ();
......@@ -3526,9 +3614,11 @@ If the region can't be decoded, signal an error and don't modify the buffer. */
}
DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string,
1, 1, 0,
doc: /* Base64-decode STRING and return the result. */)
(Lisp_Object string)
1, 2, 0,
doc: /* Base64-decode STRING and return the result
Optional argument BASE64URL define if base64Url variant will be used
see RFC4648. */)
(Lisp_Object string, Lisp_Object base64url)
{
char *decoded;
ptrdiff_t length, decoded_length;
......@@ -3543,7 +3633,7 @@ DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string,
/* The decoded result should be unibyte. */
decoded_length = base64_decode_1 (SSDATA (string), decoded, length,
0, NULL);
!NILP (base64url), 0, NULL);
if (decoded_length > length)
emacs_abort ();
else if (decoded_length >= 0)
......@@ -3565,6 +3655,7 @@ DEFUN ("base64-decode-string", Fbase64_decode_string, Sbase64_decode_string,
static ptrdiff_t
base64_decode_1 (const char *from, char *to, ptrdiff_t length,
bool base64url,
bool multibyte, ptrdiff_t *nchars_return)
{
ptrdiff_t i = 0; /* Used inside READ_QUADRUPLET_BYTE */
......@@ -3572,6 +3663,7 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
unsigned char c;
unsigned long value;
ptrdiff_t nchars = 0;
short const *b64_char_to_value = (base64url) ? base64url_char_to_value : base64_char_to_value;
while (1)
{
......@@ -3581,7 +3673,7 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
if (!IS_BASE64 (c))
return -1;
value = base64_char_to_value[c] << 18;
value = b64_char_to_value[c] << 18;
/* Process second byte of a quadruplet. */
......@@ -3589,7 +3681,7 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
if (!IS_BASE64 (c))
return -1;
value |= base64_char_to_value[c] << 12;
value |= b64_char_to_value[c] << 12;
c = (unsigned char) (value >> 16);
if (multibyte && c >= 128)
......@@ -3600,7 +3692,14 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
/* Process third byte of a quadruplet. */
if (!base64url)
{
READ_QUADRUPLET_BYTE (-1);
}
else
{
READ_QUADRUPLET_BYTE (e-to);
}
if (c == '=')
{
......@@ -3613,7 +3712,7 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
if (!IS_BASE64 (c))
return -1;
value |= base64_char_to_value[c] << 6;
value |= b64_char_to_value[c] << 6;
c = (unsigned char) (0xff & value >> 8);
if (multibyte && c >= 128)
......@@ -3624,14 +3723,21 @@ base64_decode_1 (const char *from, char *to, ptrdiff_t length,
/* Process fourth byte of a quadruplet. */
if (!base64url)
{
READ_QUADRUPLET_BYTE (-1);
}
else
{
READ_QUADRUPLET_BYTE (e-to);
}
if (c == '=')
continue;
if (!IS_BASE64 (c))
return -1;
value |= base64_char_to_value[c];
value |= b64_char_to_value[c];
c = (unsigned char) (0xff & value);
if (multibyte && c >= 128)
......@@ -5461,6 +5567,8 @@ this variable. */);
defsubr (&Sbase64_decode_region);
defsubr (&Sbase64_encode_string);
defsubr (&Sbase64_decode_string);
defsubr (&Sbase64url_encode_region);
defsubr (&Sbase64url_encode_string);
defsubr (&Smd5);
defsubr (&Ssecure_hash_algorithms);
defsubr (&Ssecure_hash);
......
......@@ -233,6 +233,185 @@
(should (equal (func-arity (eval (lambda (x &optional y)) t)) '(1 . 2)))
(should (equal (func-arity 'let) '(1 . unevalled))))
(defun fns-tests--string-repeat (s o)
(apply 'concat (make-list o s)))
(defmacro fns-tests--with-region (funcname string &rest args)
"Apply FUNCNAME in a temp bufer on the region produced by STRING."
(declare (indent 1))
`(with-temp-buffer
(insert ,string)
(,funcname (point-min) (point-max) ,@args)
(buffer-string)))
(ert-deftest fns-tests-base64-encode-region ()
;; standard variant RFC2045
(should (equal (fns-tests--with-region base64-encode-region "") ""))
(should (equal (fns-tests--with-region base64-encode-region "f") "Zg=="))
(should (equal (fns-tests--with-region base64-encode-region "fo") "Zm8="))
(should (equal (fns-tests--with-region base64-encode-region "foo") "Zm9v"))
(should (equal (fns-tests--with-region base64-encode-region "foob") "Zm9vYg=="))
(should (equal (fns-tests--with-region base64-encode-region "fooba") "Zm9vYmE="))
(should (equal (fns-tests--with-region base64-encode-region "foobar") "Zm9vYmFy"))
(should (equal (fns-tests--with-region base64-encode-region "\x14\xfb\x9c\x03\xd9\x7e") "FPucA9l+"))
(should (equal (fns-tests--with-region base64-encode-region "\x14\xfb\x9c\x03\xd9\x7f") "FPucA9l/")))
(ert-deftest fns-tests-base64-encode-string ()
;; standard variant RFC2045
(should (equal (base64-encode-string "") ""))
(should (equal (base64-encode-string "f") "Zg=="))
(should (equal (base64-encode-string "fo") "Zm8="))
(should (equal (base64-encode-string "foo") "Zm9v"))
(should (equal (base64-encode-string "foob") "Zm9vYg=="))
(should (equal (base64-encode-string "fooba") "Zm9vYmE="))
(should (equal (base64-encode-string "foobar") "Zm9vYmFy"))
(should (equal (base64-encode-string "\x14\xfb\x9c\x03\xd9\x7e") "FPucA9l+"))
(should (equal (base64-encode-string "\x14\xfb\x9c\x03\xd9\x7f") "FPucA9l/")))
(ert-deftest fns-test-base64url-encode-region ()
;; url variant wih padding
(should (equal (fns-tests--with-region base64url-encode-region "") ""))
(should (equal (fns-tests--with-region base64url-encode-region "f") "Zg=="))
(should (equal (fns-tests--with-region base64url-encode-region "fo") "Zm8="))
(should (equal (fns-tests--with-region base64url-encode-region "foo") "Zm9v"))
(should (equal (fns-tests--with-region base64url-encode-region "foob") "Zm9vYg=="))
(should (equal (fns-tests--with-region base64url-encode-region "fooba") "Zm9vYmE="))
(should (equal (fns-tests--with-region base64url-encode-region "foobar") "Zm9vYmFy"))
(should (equal (fns-tests--with-region base64url-encode-region "\x14\xfb\x9c\x03\xd9\x7e") "FPucA9l-"))
(should (equal (fns-tests--with-region base64url-encode-region "\x14\xfb\x9c\x03\xd9\x7f") "FPucA9l_"))
;; url variant no padding
(should (equal (fns-tests--with-region base64url-encode-region "" t) ""))
(should (equal (fns-tests--with-region base64url-encode-region "f" t) "Zg"))
(should (equal (fns-tests--with-region base64url-encode-region "fo" t) "Zm8"))
(should (equal (fns-tests--with-region base64url-encode-region "foo" t) "Zm9v"))
(should (equal (fns-tests--with-region base64url-encode-region "foob" t) "Zm9vYg"))
(should (equal (fns-tests--with-region base64url-encode-region "fooba" t) "Zm9vYmE"))
(should (equal (fns-tests--with-region base64url-encode-region "foobar" t) "Zm9vYmFy"))
(should (equal (fns-tests--with-region base64url-encode-region "\x14\xfb\x9c\x03\xd9\x7e" t) "FPucA9l-"))
(should (equal (fns-tests--with-region base64url-encode-region "\x14\xfb\x9c\x03\xd9\x7f" t) "FPucA9l_"))
;; url variant no line break no padding
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "f" 100) t)
(concat (fns-tests--string-repeat "Zm" 66) "Zg")))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "fo" 50) t)
(concat (fns-tests--string-repeat "Zm9mb2Zv" 16) "Zm9mbw")))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "foo" 25) t)
(fns-tests--string-repeat "Zm9v" 25)))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "foob" 15) t)
(fns-tests--string-repeat "Zm9vYmZvb2Jmb29i" 5)))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "fooba" 15) t)
(fns-tests--string-repeat "Zm9vYmFmb29iYWZvb2Jh" 5)))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "foobar" 15) t)
(concat (fns-tests--string-repeat "Zm9vYmFyZm9vYmFy" 7) "Zm9vYmFy")))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7e" 10) t)
(fns-tests--string-repeat "FPucA9l-" 10)))
(should (equal (fns-tests--with-region base64url-encode-region (fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7f" 10) t)
(fns-tests--string-repeat "FPucA9l_" 10))))
(ert-deftest fns-test-base64url-encode-string ()
;; url variant wih padding
(should (equal (base64url-encode-string "") ""))
(should (equal (base64url-encode-string "f") "Zg=="))
(should (equal (base64url-encode-string "fo") "Zm8="))
(should (equal (base64url-encode-string "foo") "Zm9v"))
(should (equal (base64url-encode-string "foob") "Zm9vYg=="))
(should (equal (base64url-encode-string "fooba") "Zm9vYmE="))
(should (equal (base64url-encode-string "foobar") "Zm9vYmFy"))
(should (equal (base64url-encode-string "\x14\xfb\x9c\x03\xd9\x7e") "FPucA9l-"))
(should (equal (base64url-encode-string "\x14\xfb\x9c\x03\xd9\x7f") "FPucA9l_"))
;; url variant no padding
(should (equal (base64url-encode-string "" t) ""))
(should (equal (base64url-encode-string "f" t) "Zg"))
(should (equal (base64url-encode-string "fo" t) "Zm8"))
(should (equal (base64url-encode-string "foo" t) "Zm9v"))
(should (equal (base64url-encode-string "foob" t) "Zm9vYg"))
(should (equal (base64url-encode-string "fooba" t) "Zm9vYmE"))
(should (equal (base64url-encode-string "foobar" t) "Zm9vYmFy"))
(should (equal (base64url-encode-string "\x14\xfb\x9c\x03\xd9\x7e" t) "FPucA9l-"))
(should (equal (base64url-encode-string "\x14\xfb\x9c\x03\xd9\x7f" t) "FPucA9l_"))
;; url variant no line break no padding
(should (equal (base64url-encode-string (fns-tests--string-repeat "f" 100) t) (concat (fns-tests--string-repeat "Zm" 66) "Zg")))
(should (equal (base64url-encode-string (fns-tests--string-repeat "fo" 50) t) (concat (fns-tests--string-repeat "Zm9mb2Zv" 16) "Zm9mbw")))
(should (equal (base64url-encode-string (fns-tests--string-repeat "foo" 25) t) (fns-tests--string-repeat "Zm9v" 25)))
(should (equal (base64url-encode-string (fns-tests--string-repeat "foob" 15) t) (fns-tests--string-repeat "Zm9vYmZvb2Jmb29i" 5)))
(should (equal (base64url-encode-string (fns-tests--string-repeat "fooba" 15) t) (fns-tests--string-repeat "Zm9vYmFmb29iYWZvb2Jh" 5)))
(should (equal (base64url-encode-string (fns-tests--string-repeat "foobar" 15) t) (concat (fns-tests--string-repeat "Zm9vYmFyZm9vYmFy" 7) "Zm9vYmFy")))
(should (equal (base64url-encode-string (fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7e" 10) t) (fns-tests--string-repeat "FPucA9l-" 10)))
(should (equal (base64url-encode-string (fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7f" 10) t) (fns-tests--string-repeat "FPucA9l_" 10))))
(ert-deftest fns-tests-base64-decode-string ()
;; standard variant RFC2045
(should (equal (base64-decode-string "") ""))
(should (equal (base64-decode-string "Zg==") "f"))
(should (equal (base64-decode-string "Zm8=") "fo"))
(should (equal (base64-decode-string "Zm9v") "foo"))
(should (equal (base64-decode-string "Zm9vYg==") "foob"))
(should (equal (base64-decode-string "Zm9vYmE=") "fooba"))
(should (equal (base64-decode-string "Zm9vYmFy") "foobar"))
(should (equal (base64-decode-string "FPucA9l+") "\x14\xfb\x9c\x03\xd9\x7e"))
(should (equal (base64-decode-string "FPucA9l/") "\x14\xfb\x9c\x03\xd9\x7f"))
;; no paddign
(should (equal (base64-decode-string "" t) ""))
(should (equal (base64-decode-string "Zg" t) "f"))
(should (equal (base64-decode-string "Zm8" t) "fo"))
(should (equal (base64-decode-string "Zm9v" t) "foo"))
(should (equal (base64-decode-string "Zm9vYg" t) "foob"))
(should (equal (base64-decode-string "Zm9vYmE" t) "fooba"))
(should (equal (base64-decode-string "Zm9vYmFy" t) "foobar"))
;; url variant wih padding
(should (equal (base64-decode-string "") ""))
(should (equal (base64-decode-string "Zg==" t) "f") )
(should (equal (base64-decode-string "Zm8=" t) "fo"))
(should (equal (base64-decode-string "Zm9v" t) "foo"))
(should (equal (base64-decode-string "Zm9vYg==" t) "foob"))
(should (equal (base64-decode-string "Zm9vYmE=" t) "fooba"))
(should (equal (base64-decode-string "Zm9vYmFy" t) "foobar"))
(should (equal (base64-decode-string "FPucA9l-" t) "\x14\xfb\x9c\x03\xd9\x7e"))
(should (equal (base64-decode-string "FPucA9l_" t) "\x14\xfb\x9c\x03\xd9\x7f"))
;; url variant no padding
(should (equal (base64-decode-string "") ""))
(should (equal (base64-decode-string "Zg" t) "f"))
(should (equal (base64-decode-string "Zm8" t) "fo"))
(should (equal (base64-decode-string "Zm9v" t) "foo"))
(should (equal (base64-decode-string "Zm9vYg" t) "foob"))
(should (equal (base64-decode-string "Zm9vYmE" t) "fooba"))
(should (equal (base64-decode-string "Zm9vYmFy" t) "foobar"))
(should (equal (base64-decode-string "FPucA9l-" t) "\x14\xfb\x9c\x03\xd9\x7e"))
(should (equal (base64-decode-string "FPucA9l_" t) "\x14\xfb\x9c\x03\xd9\x7f"))
;; url variant no line break no padding
(should (equal (base64-decode-string (concat (fns-tests--string-repeat "Zm" 66) "Zg") t)
(fns-tests--string-repeat "f" 100)))
(should (equal (base64-decode-string (concat (fns-tests--string-repeat "Zm9mb2Zv" 16) "Zm9mbw") t)
(fns-tests--string-repeat "fo" 50)))
(should (equal (base64-decode-string (fns-tests--string-repeat "Zm9v" 25) t)
(fns-tests--string-repeat "foo" 25)))
(should (equal (base64-decode-string (fns-tests--string-repeat "Zm9vYmZvb2Jmb29i" 5) t)
(fns-tests--string-repeat "foob" 15)))
(should (equal (base64-decode-string (fns-tests--string-repeat "Zm9vYmFmb29iYWZvb2Jh" 5) t)
(fns-tests--string-repeat "fooba" 15)))
(should (equal (base64-decode-string (concat (fns-tests--string-repeat "Zm9vYmFyZm9vYmFy" 7) "Zm9vYmFy") t)
(fns-tests--string-repeat "foobar" 15)))
(should (equal (base64-decode-string (fns-tests--string-repeat "FPucA9l-" 10) t)
(fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7e" 10)))
(should (equal (base64-decode-string (fns-tests--string-repeat "FPucA9l_" 10) t)
(fns-tests--string-repeat "\x14\xfb\x9c\x03\xd9\x7f" 10)))
;; errors check
(should (eq :got-error (condition-case () (base64-decode-string "Zg=") (error :got-error))))
(should (eq :got-error (condition-case () (base64-decode-string "Zm9vYmE") (error :got-error))))
(should (eq :got-error (condition-case () (base64-decode-string "Zm9vYmFy=") (error :got-error))))
(should (eq :got-error (condition-case () (base64-decode-string "Zg=Zg=") (error :got-error)))))
(ert-deftest fns-tests-hash-buffer ()
(should (equal (sha1 "foo") "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33"))
(should (equal (with-temp-buffer
......
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