diff options
Diffstat (limited to 'indra/llmessage')
| -rw-r--r-- | indra/llmessage/lliohttpserver.cpp | 14 | ||||
| -rw-r--r-- | indra/llmessage/llxfermanager.cpp | 36 |
2 files changed, 31 insertions, 19 deletions
diff --git a/indra/llmessage/lliohttpserver.cpp b/indra/llmessage/lliohttpserver.cpp index 83dfa94f00..ce815cc85b 100644 --- a/indra/llmessage/lliohttpserver.cpp +++ b/indra/llmessage/lliohttpserver.cpp @@ -520,7 +520,7 @@ protected: * seek orfor string assignment. * @returns Returns true if a line was found. */ - bool readLine( + bool readHeaderLine( const LLChannelDescriptors& channels, buffer_ptr_t buffer, U8* dest, @@ -591,7 +591,7 @@ LLHTTPResponder::~LLHTTPResponder() //lldebugs << "destroying LLHTTPResponder" << llendl; } -bool LLHTTPResponder::readLine( +bool LLHTTPResponder::readHeaderLine( const LLChannelDescriptors& channels, buffer_ptr_t buffer, U8* dest, @@ -669,7 +669,7 @@ LLIOPipe::EStatus LLHTTPResponder::process_impl( #endif PUMP_DEBUG; - if(readLine(channels, buffer, (U8*)buf, len)) + if(readHeaderLine(channels, buffer, (U8*)buf, len)) { bool read_next_line = false; bool parse_all = true; @@ -733,7 +733,13 @@ LLIOPipe::EStatus LLHTTPResponder::process_impl( if(read_next_line) { len = HEADER_BUFFER_SIZE; - readLine(channels, buffer, (U8*)buf, len); + if (!readHeaderLine(channels, buffer, (U8*)buf, len)) + { + // Failed to read the header line, probably too long. + // readHeaderLine already marked the channel/buffer as bad. + keep_parsing = false; + break; + } } if(0 == len) { 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*/) |