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added some precautionary checks in bdecoder

This commit is contained in:
Arvid Norberg 2008-08-16 21:10:39 +00:00
parent 015ab223c9
commit a49906f0cc
1 changed files with 4 additions and 2 deletions
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6
src/lazy_bdecode.cpp
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@ -88,10 +88,10 @@ namespace libtorrent
lazy_entry* top = stack.back();
if (int(stack.size()) > depth_limit) return fail_bdecode();
if (start == end) return fail_bdecode();
if (start >= end) return fail_bdecode();
char t = *start;
++start;
if (start == end && t != 'e') return fail_bdecode();
if (start >= end && t != 'e') return fail_bdecode();
switch (top->type())
{
@ -107,8 +107,10 @@ namespace libtorrent
start = parse_int(start, end, ':', len);
if (start == 0 || start + len + 3 > end || *start != ':') return fail_bdecode();
++start;
if (start == end) fail_bdecode();
lazy_entry* ent = top->dict_append(start);
start += len;
if (start >= end) fail_bdecode();
stack.push_back(ent);
t = *start;
++start;