diff options
Diffstat (limited to 'lib/base64.c')
| -rw-r--r-- | lib/base64.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/lib/base64.c b/lib/base64.c index 85b974a..9d0191e 100644 --- a/lib/base64.c +++ b/lib/base64.c @@ -56,11 +56,17 @@ gray_base64_decode(gray_slist_t slist, const char *iptr, size_t isize) if (i == 4) { - gray_slist_append_char(slist, - (data[0] << 2) | ((data[1] & 0x30) >> 4)); - gray_slist_append_char(slist, - ((data[1] & 0xf) << 4) | ((data[2] & 0x3c) >> 2)); - gray_slist_append_char(slist, - ((data[2] & 0x3) << 6) | data[3]); + if (gray_slist_append_char(slist, + (data[0] << 2) | ((data[1] & 0x30) >> 4)) != 1) + return -1; + if (gray_slist_append_char(slist, + ((data[1] & 0xf) << 4) | ((data[2] & 0x3c) >> 2)) + != 1) + return -1; + if (gray_slist_append_char(slist, + ((data[2] & 0x3) << 6) | data[3]) != 1) + return -1; nbytes += 3 - pad; - } else + } else { + errno = EILSEQ; return -1; + } i = 0; |