diff options
Diffstat (limited to 'indra/llmessage/llxfermanager.cpp')
| -rw-r--r-- | indra/llmessage/llxfermanager.cpp | 36 |
1 files changed, 21 insertions, 15 deletions
diff --git a/indra/llmessage/llxfermanager.cpp b/indra/llmessage/llxfermanager.cpp index 08c9192c9f..209bdb2249 100644 --- a/indra/llmessage/llxfermanager.cpp +++ b/indra/llmessage/llxfermanager.cpp @@ -760,30 +760,36 @@ static bool remove_prefix(std::string& filename, const std::string& prefix) static bool verify_cache_filename(const std::string& filename) { //NOTE: This routine is only used to check file names that our own - // code places in the cache directory. As such, it can be limited - // to this very restrictive file name pattern. It does not need to - // handle other characters. - + // code places in the cache directory. As such, it can be limited + // to this very restrictive file name pattern. It does not need to + // handle other characters. The only known uses of this are (with examples): + // sim to sim object pass: fc0b72d8-9456-63d9-a802-a557ef847313.tmp + // sim to viewer mute list: mute_b78eacd0-1244-448e-93ca-28ede242f647.tmp + // sim to viewer task inventory: inventory_d8ab59d2-baf0-0e79-c4c2-a3f99b9fcf45.tmp + + //IMPORTANT: Do not broaden the filenames accepted by this routine + // without careful analysis. Anything allowed by this function can + // be downloaded by the viewer. + size_t len = filename.size(); - //const boost::regex expr("[a-zA-Z0-9][-_.a-zA-Z0-9]<0,49>"); - if (len < 1 || len > 50) - { + //const boost::regex expr("[0-9a-zA-Z_-]<1,46>\.tmp"); + if (len < 5 || len > 50) + { return false; } - for(unsigned i=0; i<len; ++i) - { + for(size_t i=0; i<(len-4); ++i) + { char c = filename[i]; - bool ok = isalnum(c); - if (!ok && i > 0) - { - ok = '_'==c || '-'==c || '.'==c; - } + bool ok = isalnum(c) || '_'==c || '-'==c; if (!ok) { return false; } } - return true; + return filename[len-4] == '.' + && filename[len-3] == 't' + && filename[len-2] == 'm' + && filename[len-1] == 'p'; } void LLXferManager::processFileRequest (LLMessageSystem *mesgsys, void ** /*user_data*/) |