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* pack.c (pack_unpack): properly ignore non-base64 octets such as

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UTF-8 encoded BOMs; submitted by SOUMA Yutaka <holon@radastery.jp>
  to fix [ruby-core:10437]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11935 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shyouhei 2007-02-28 11:55:19 +00:00
parent cebb4b5ca0
commit 7f005938cf
2 changed files with 21 additions and 8 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
Wed Feb 28 20:51:32 2007 URABE Shyouhei <shyouhei@ruby-lang.org>
* pack.c (pack_unpack): properly ignore non-base64 octets such as
UTF-8 encoded BOMs; submitted by SOUMA Yutaka <holon@radastery.jp>
to fix [ruby-core:10437]
Wed Feb 28 18:31:51 2007 NAKAMURA Usaku <usa@ruby-lang.org>
* ext/openssl/extconf.rb: no need to check unistd.h and sys/time.h.

23
pack.c
View file

@ -1794,20 +1794,27 @@ pack_unpack(VALUE str, VALUE 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;
}