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diff --git a/gl/base64.c b/gl/base64.c
index 42ccc9c2476c65d728b35355908799692e44ef0e..d99e175f9d6233b49ad773f38cac03ba44a4a09e 100644 (file)
--- a/gl/base64.c
+++ b/gl/base64.c
/* base64.c -- Encode binary data using printable characters.
- Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006 Free Software
+ Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006, 2009, 2010 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
terminate the output buffer. */
void
base64_encode (const char *restrict in, size_t inlen,
- char *restrict out, size_t outlen)
+ char *restrict out, size_t outlen)
{
static const char b64str[64] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
{
*out++ = b64str[(to_uchar (in[0]) >> 2) & 0x3f];
if (!--outlen)
- break;
+ break;
*out++ = b64str[((to_uchar (in[0]) << 4)
- + (--inlen ? to_uchar (in[1]) >> 4 : 0))
- & 0x3f];
+ + (--inlen ? to_uchar (in[1]) >> 4 : 0))
+ & 0x3f];
if (!--outlen)
- break;
+ break;
*out++ =
- (inlen
- ? b64str[((to_uchar (in[1]) << 2)
- + (--inlen ? to_uchar (in[2]) >> 6 : 0))
- & 0x3f]
- : '=');
+ (inlen
+ ? b64str[((to_uchar (in[1]) << 2)
+ + (--inlen ? to_uchar (in[2]) >> 6 : 0))
+ & 0x3f]
+ : '=');
if (!--outlen)
- break;
+ break;
*out++ = inlen ? b64str[to_uchar (in[2]) & 0x3f] : '=';
if (!--outlen)
- break;
+ break;
if (inlen)
- inlen--;
+ inlen--;
if (inlen)
- in += 3;
+ in += 3;
}
if (outlen)
IBM C V6 for AIX mishandles "#define B64(x) ...'x'...", so use "_"
as the formal parameter rather than "x". */
-#define B64(_) \
- ((_) == 'A' ? 0 \
- : (_) == 'B' ? 1 \
- : (_) == 'C' ? 2 \
- : (_) == 'D' ? 3 \
- : (_) == 'E' ? 4 \
- : (_) == 'F' ? 5 \
- : (_) == 'G' ? 6 \
- : (_) == 'H' ? 7 \
- : (_) == 'I' ? 8 \
- : (_) == 'J' ? 9 \
- : (_) == 'K' ? 10 \
- : (_) == 'L' ? 11 \
- : (_) == 'M' ? 12 \
- : (_) == 'N' ? 13 \
- : (_) == 'O' ? 14 \
- : (_) == 'P' ? 15 \
- : (_) == 'Q' ? 16 \
- : (_) == 'R' ? 17 \
- : (_) == 'S' ? 18 \
- : (_) == 'T' ? 19 \
- : (_) == 'U' ? 20 \
- : (_) == 'V' ? 21 \
- : (_) == 'W' ? 22 \
- : (_) == 'X' ? 23 \
- : (_) == 'Y' ? 24 \
- : (_) == 'Z' ? 25 \
- : (_) == 'a' ? 26 \
- : (_) == 'b' ? 27 \
- : (_) == 'c' ? 28 \
- : (_) == 'd' ? 29 \
- : (_) == 'e' ? 30 \
- : (_) == 'f' ? 31 \
- : (_) == 'g' ? 32 \
- : (_) == 'h' ? 33 \
- : (_) == 'i' ? 34 \
- : (_) == 'j' ? 35 \
- : (_) == 'k' ? 36 \
- : (_) == 'l' ? 37 \
- : (_) == 'm' ? 38 \
- : (_) == 'n' ? 39 \
- : (_) == 'o' ? 40 \
- : (_) == 'p' ? 41 \
- : (_) == 'q' ? 42 \
- : (_) == 'r' ? 43 \
- : (_) == 's' ? 44 \
- : (_) == 't' ? 45 \
- : (_) == 'u' ? 46 \
- : (_) == 'v' ? 47 \
- : (_) == 'w' ? 48 \
- : (_) == 'x' ? 49 \
- : (_) == 'y' ? 50 \
- : (_) == 'z' ? 51 \
- : (_) == '0' ? 52 \
- : (_) == '1' ? 53 \
- : (_) == '2' ? 54 \
- : (_) == '3' ? 55 \
- : (_) == '4' ? 56 \
- : (_) == '5' ? 57 \
- : (_) == '6' ? 58 \
- : (_) == '7' ? 59 \
- : (_) == '8' ? 60 \
- : (_) == '9' ? 61 \
- : (_) == '+' ? 62 \
- : (_) == '/' ? 63 \
+#define B64(_) \
+ ((_) == 'A' ? 0 \
+ : (_) == 'B' ? 1 \
+ : (_) == 'C' ? 2 \
+ : (_) == 'D' ? 3 \
+ : (_) == 'E' ? 4 \
+ : (_) == 'F' ? 5 \
+ : (_) == 'G' ? 6 \
+ : (_) == 'H' ? 7 \
+ : (_) == 'I' ? 8 \
+ : (_) == 'J' ? 9 \
+ : (_) == 'K' ? 10 \
+ : (_) == 'L' ? 11 \
+ : (_) == 'M' ? 12 \
+ : (_) == 'N' ? 13 \
+ : (_) == 'O' ? 14 \
+ : (_) == 'P' ? 15 \
+ : (_) == 'Q' ? 16 \
+ : (_) == 'R' ? 17 \
+ : (_) == 'S' ? 18 \
+ : (_) == 'T' ? 19 \
+ : (_) == 'U' ? 20 \
+ : (_) == 'V' ? 21 \
+ : (_) == 'W' ? 22 \
+ : (_) == 'X' ? 23 \
+ : (_) == 'Y' ? 24 \
+ : (_) == 'Z' ? 25 \
+ : (_) == 'a' ? 26 \
+ : (_) == 'b' ? 27 \
+ : (_) == 'c' ? 28 \
+ : (_) == 'd' ? 29 \
+ : (_) == 'e' ? 30 \
+ : (_) == 'f' ? 31 \
+ : (_) == 'g' ? 32 \
+ : (_) == 'h' ? 33 \
+ : (_) == 'i' ? 34 \
+ : (_) == 'j' ? 35 \
+ : (_) == 'k' ? 36 \
+ : (_) == 'l' ? 37 \
+ : (_) == 'm' ? 38 \
+ : (_) == 'n' ? 39 \
+ : (_) == 'o' ? 40 \
+ : (_) == 'p' ? 41 \
+ : (_) == 'q' ? 42 \
+ : (_) == 'r' ? 43 \
+ : (_) == 's' ? 44 \
+ : (_) == 't' ? 45 \
+ : (_) == 'u' ? 46 \
+ : (_) == 'v' ? 47 \
+ : (_) == 'w' ? 48 \
+ : (_) == 'x' ? 49 \
+ : (_) == 'y' ? 50 \
+ : (_) == 'z' ? 51 \
+ : (_) == '0' ? 52 \
+ : (_) == '1' ? 53 \
+ : (_) == '2' ? 54 \
+ : (_) == '3' ? 55 \
+ : (_) == '4' ? 56 \
+ : (_) == '5' ? 57 \
+ : (_) == '6' ? 58 \
+ : (_) == '7' ? 59 \
+ : (_) == '8' ? 60 \
+ : (_) == '9' ? 61 \
+ : (_) == '+' ? 62 \
+ : (_) == '/' ? 63 \
: -1)
static const signed char b64[0x100] = {
{
char const *t = *in;
if (4 <= in_end - *in && memchr (t, '\n', 4) == NULL)
- {
- /* This is the common case: no newline. */
- *in += 4;
- *n_non_newline = 4;
- return (char *) t;
- }
+ {
+ /* This is the common case: no newline. */
+ *in += 4;
+ *n_non_newline = 4;
+ return (char *) t;
+ }
}
{
char const *p = *in;
while (p < in_end)
{
- char c = *p++;
- if (c != '\n')
- {
- ctx->buf[ctx->i++] = c;
- if (ctx->i == 4)
- break;
- }
+ char c = *p++;
+ if (c != '\n')
+ {
+ ctx->buf[ctx->i++] = c;
+ if (ctx->i == 4)
+ break;
+ }
}
*in = p;
}
}
-#define return_false \
- do \
- { \
- *outp = out; \
- return false; \
- } \
+#define return_false \
+ do \
+ { \
+ *outp = out; \
+ return false; \
+ } \
while (false)
/* Decode up to four bytes of base64-encoded data, IN, of length INLEN
*OUTLEN to reflect the number of bytes remaining in *OUT. */
static inline bool
decode_4 (char const *restrict in, size_t inlen,
- char *restrict *outp, size_t *outleft)
+ char *restrict *outp, size_t *outleft)
{
char *out = *outp;
if (inlen < 2)
if (*outleft)
{
*out++ = ((b64[to_uchar (in[0])] << 2)
- | (b64[to_uchar (in[1])] >> 4));
+ | (b64[to_uchar (in[1])] >> 4));
--*outleft;
}
if (in[2] == '=')
{
if (inlen != 4)
- return_false;
+ return_false;
if (in[3] != '=')
- return_false;
+ return_false;
}
else
{
if (!isbase64 (in[2]))
- return_false;
+ return_false;
if (*outleft)
- {
- *out++ = (((b64[to_uchar (in[1])] << 4) & 0xf0)
- | (b64[to_uchar (in[2])] >> 2));
- --*outleft;
- }
+ {
+ *out++ = (((b64[to_uchar (in[1])] << 4) & 0xf0)
+ | (b64[to_uchar (in[2])] >> 2));
+ --*outleft;
+ }
if (inlen == 3)
- return_false;
+ return_false;
if (in[3] == '=')
- {
- if (inlen != 4)
- return_false;
- }
+ {
+ if (inlen != 4)
+ return_false;
+ }
else
- {
- if (!isbase64 (in[3]))
- return_false;
-
- if (*outleft)
- {
- *out++ = (((b64[to_uchar (in[2])] << 6) & 0xc0)
- | b64[to_uchar (in[3])]);
- --*outleft;
- }
- }
+ {
+ if (!isbase64 (in[3]))
+ return_false;
+
+ if (*outleft)
+ {
+ *out++ = (((b64[to_uchar (in[2])] << 6) & 0xc0)
+ | b64[to_uchar (in[3])]);
+ --*outleft;
+ }
+ }
}
*outp = out;
bool
base64_decode_ctx (struct base64_decode_context *ctx,
- const char *restrict in, size_t inlen,
- char *restrict out, size_t *outlen)
+ const char *restrict in, size_t inlen,
+ char *restrict out, size_t *outlen)
{
size_t outleft = *outlen;
bool ignore_newlines = ctx != NULL;
{
size_t outleft_save = outleft;
if (ctx_i == 0 && !flush_ctx)
- {
- while (true)
- {
- /* Save a copy of outleft, in case we need to re-parse this
- block of four bytes. */
- outleft_save = outleft;
- if (!decode_4 (in, inlen, &out, &outleft))
- break;
-
- in += 4;
- inlen -= 4;
- }
- }
+ {
+ while (true)
+ {
+ /* Save a copy of outleft, in case we need to re-parse this
+ block of four bytes. */
+ outleft_save = outleft;
+ if (!decode_4 (in, inlen, &out, &outleft))
+ break;
+
+ in += 4;
+ inlen -= 4;
+ }
+ }
if (inlen == 0 && !flush_ctx)
- break;
+ break;
/* Handle the common case of 72-byte wrapped lines.
- This also handles any other multiple-of-4-byte wrapping. */
+ This also handles any other multiple-of-4-byte wrapping. */
if (inlen && *in == '\n' && ignore_newlines)
- {
- ++in;
- --inlen;
- continue;
- }
+ {
+ ++in;
+ --inlen;
+ continue;
+ }
/* Restore OUT and OUTLEFT. */
out -= outleft_save - outleft;
outleft = outleft_save;
{
- char const *in_end = in + inlen;
- char const *non_nl;
-
- if (ignore_newlines)
- non_nl = get_4 (ctx, &in, in_end, &inlen);
- else
- non_nl = in; /* Might have nl in this case. */
-
- /* If the input is empty or consists solely of newlines (0 non-newlines),
- then we're done. Likewise if there are fewer than 4 bytes when not
- flushing context and not treating newlines as garbage. */
- if (inlen == 0 || (inlen < 4 && !flush_ctx && ignore_newlines))
- {
- inlen = 0;
- break;
- }
- if (!decode_4 (non_nl, inlen, &out, &outleft))
- break;
-
- inlen = in_end - in;
+ char const *in_end = in + inlen;
+ char const *non_nl;
+
+ if (ignore_newlines)
+ non_nl = get_4 (ctx, &in, in_end, &inlen);
+ else
+ non_nl = in; /* Might have nl in this case. */
+
+ /* If the input is empty or consists solely of newlines (0 non-newlines),
+ then we're done. Likewise if there are fewer than 4 bytes when not
+ flushing context and not treating newlines as garbage. */
+ if (inlen == 0 || (inlen < 4 && !flush_ctx && ignore_newlines))
+ {
+ inlen = 0;
+ break;
+ }
+ if (!decode_4 (non_nl, inlen, &out, &outleft))
+ break;
+
+ inlen = in_end - in;
}
}
undefined. */
bool
base64_decode_alloc_ctx (struct base64_decode_context *ctx,
- const char *in, size_t inlen, char **out,
- size_t *outlen)
+ const char *in, size_t inlen, char **out,
+ size_t *outlen)
{
/* This may allocate a few bytes too many, depending on input,
but it's not worth the extra CPU time to compute the exact size.