diff options
Diffstat (limited to 'gl/base64.c')
-rw-r--r-- | gl/base64.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/gl/base64.c b/gl/base64.c index d99e175f..8da969c0 100644 --- a/gl/base64.c +++ b/gl/base64.c | |||
@@ -1,6 +1,5 @@ | |||
1 | /* base64.c -- Encode binary data using printable characters. | 1 | /* base64.c -- Encode binary data using printable characters. |
2 | Copyright (C) 1999, 2000, 2001, 2004, 2005, 2006, 2009, 2010 Free Software | 2 | Copyright (C) 1999-2001, 2004-2006, 2009-2013 Free Software Foundation, Inc. |
3 | Foundation, Inc. | ||
4 | 3 | ||
5 | This program is free software; you can redistribute it and/or modify | 4 | This program is free software; you can redistribute it and/or modify |
6 | it under the terms of the GNU General Public License as published by | 5 | it under the terms of the GNU General Public License as published by |
@@ -13,14 +12,13 @@ | |||
13 | GNU General Public License for more details. | 12 | GNU General Public License for more details. |
14 | 13 | ||
15 | You should have received a copy of the GNU General Public License | 14 | You should have received a copy of the GNU General Public License |
16 | along with this program; if not, write to the Free Software Foundation, | 15 | along with this program; if not, see <http://www.gnu.org/licenses/>. */ |
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | ||
18 | 16 | ||
19 | /* Written by Simon Josefsson. Partially adapted from GNU MailUtils | 17 | /* Written by Simon Josefsson. Partially adapted from GNU MailUtils |
20 | * (mailbox/filter_trans.c, as of 2004-11-28). Improved by review | 18 | * (mailbox/filter_trans.c, as of 2004-11-28). Improved by review |
21 | * from Paul Eggert, Bruno Haible, and Stepan Kasal. | 19 | * from Paul Eggert, Bruno Haible, and Stepan Kasal. |
22 | * | 20 | * |
23 | * See also RFC 3548 <http://www.ietf.org/rfc/rfc3548.txt>. | 21 | * See also RFC 4648 <http://www.ietf.org/rfc/rfc4648.txt>. |
24 | * | 22 | * |
25 | * Be careful with error checking. Here is how you would typically | 23 | * Be careful with error checking. Here is how you would typically |
26 | * use these functions: | 24 | * use these functions: |
@@ -55,7 +53,7 @@ | |||
55 | #include <string.h> | 53 | #include <string.h> |
56 | 54 | ||
57 | /* C89 compliant way to cast 'char' to 'unsigned char'. */ | 55 | /* C89 compliant way to cast 'char' to 'unsigned char'. */ |
58 | static inline unsigned char | 56 | static unsigned char |
59 | to_uchar (char ch) | 57 | to_uchar (char ch) |
60 | { | 58 | { |
61 | return ch; | 59 | return ch; |
@@ -316,7 +314,7 @@ base64_decode_ctx_init (struct base64_decode_context *ctx) | |||
316 | and return CTX->buf. In either case, advance *IN to point to the byte | 314 | and return CTX->buf. In either case, advance *IN to point to the byte |
317 | after the last one processed, and set *N_NON_NEWLINE to the number of | 315 | after the last one processed, and set *N_NON_NEWLINE to the number of |
318 | verified non-newline bytes accessible through the returned pointer. */ | 316 | verified non-newline bytes accessible through the returned pointer. */ |
319 | static inline char * | 317 | static char * |
320 | get_4 (struct base64_decode_context *ctx, | 318 | get_4 (struct base64_decode_context *ctx, |
321 | char const *restrict *in, char const *restrict in_end, | 319 | char const *restrict *in, char const *restrict in_end, |
322 | size_t *n_non_newline) | 320 | size_t *n_non_newline) |
@@ -370,7 +368,7 @@ get_4 (struct base64_decode_context *ctx, | |||
370 | as many bytes as possible are written to *OUT. On return, advance | 368 | as many bytes as possible are written to *OUT. On return, advance |
371 | *OUT to point to the byte after the last one written, and decrement | 369 | *OUT to point to the byte after the last one written, and decrement |
372 | *OUTLEN to reflect the number of bytes remaining in *OUT. */ | 370 | *OUTLEN to reflect the number of bytes remaining in *OUT. */ |
373 | static inline bool | 371 | static bool |
374 | decode_4 (char const *restrict in, size_t inlen, | 372 | decode_4 (char const *restrict in, size_t inlen, |
375 | char *restrict *outp, size_t *outleft) | 373 | char *restrict *outp, size_t *outleft) |
376 | { | 374 | { |
@@ -553,10 +551,10 @@ base64_decode_alloc_ctx (struct base64_decode_context *ctx, | |||
553 | { | 551 | { |
554 | /* This may allocate a few bytes too many, depending on input, | 552 | /* This may allocate a few bytes too many, depending on input, |
555 | but it's not worth the extra CPU time to compute the exact size. | 553 | but it's not worth the extra CPU time to compute the exact size. |
556 | The exact size is 3 * inlen / 4, minus 1 if the input ends | 554 | The exact size is 3 * (inlen + (ctx ? ctx->i : 0)) / 4, minus 1 if the |
557 | with "=" and minus another 1 if the input ends with "==". | 555 | input ends with "=" and minus another 1 if the input ends with "==". |
558 | Dividing before multiplying avoids the possibility of overflow. */ | 556 | Dividing before multiplying avoids the possibility of overflow. */ |
559 | size_t needlen = 3 * (inlen / 4) + 2; | 557 | size_t needlen = 3 * (inlen / 4) + 3; |
560 | 558 | ||
561 | *out = malloc (needlen); | 559 | *out = malloc (needlen); |
562 | if (!*out) | 560 | if (!*out) |