diff options
Diffstat (limited to 'pack.c')
| -rw-r--r-- | pack.c | 23 |
1 files changed, 15 insertions, 8 deletions
@@ -1803,20 +1803,27 @@ pack_unpack(str, fmt) } } while (s < send) { - while (s[0] == '\r' || s[0] == '\n') { s++; } - if ((a = b64_xtable[(int)s[0]]) == -1) break; - if ((b = b64_xtable[(int)s[1]]) == -1) break; - if ((c = b64_xtable[(int)s[2]]) == -1) break; - if ((d = b64_xtable[(int)s[3]]) == -1) break; + a = b = c = d = -1; + while((a = b64_xtable[(int)(*(unsigned char*)s)]) == -1 && s < send) { s++; } + if( s >= send ) break; + s++; + while((b = b64_xtable[(int)(*(unsigned char*)s)]) == -1 && s < send) { s++; } + if( s >= send ) break; + s++; + while((c = b64_xtable[(int)(*(unsigned char*)s)]) == -1 && s < send) { if( *s == '=' ) break; s++; } + if( *s == '=' || s >= send ) break; + s++; + while((d = b64_xtable[(int)(*(unsigned char*)s)]) == -1 && s < send) { if( *s == '=' ) break; s++; } + if( *s == '=' || s >= send ) break; + s++; *ptr++ = a << 2 | b >> 4; *ptr++ = b << 4 | c >> 2; *ptr++ = c << 6 | d; - s += 4; } if (a != -1 && b != -1) { - if (s + 2 < send && s[2] == '=') + if (c == -1 && *s == '=') *ptr++ = a << 2 | b >> 4; - if (c != -1 && s + 3 < send && s[3] == '=') { + else if (c != -1 && *s == '=') { *ptr++ = a << 2 | b >> 4; *ptr++ = b << 4 | c >> 2; } |