diff options
| -rw-r--r-- | indra/llcommon/lluriparser.cpp | 78 | ||||
| -rw-r--r-- | indra/llcommon/lluriparser.h | 1 |
2 files changed, 54 insertions, 25 deletions
diff --git a/indra/llcommon/lluriparser.cpp b/indra/llcommon/lluriparser.cpp index 015ff2d7c3..e4f229dd16 100644 --- a/indra/llcommon/lluriparser.cpp +++ b/indra/llcommon/lluriparser.cpp @@ -29,10 +29,13 @@ #include "linden_common.h" #include "lluriparser.h" +#if LL_DARWIN +#include <signal.h> +#include <setjmp.h> +#endif + LLUriParser::LLUriParser(const std::string& u) : mTmpScheme(false), mNormalizedTmp(false), mRes(0) { - mState.uri = &mUri; - if (u.find("://") == std::string::npos) { mNormalizedUri = "http://"; @@ -51,7 +54,7 @@ LLUriParser::~LLUriParser() S32 LLUriParser::parse() { - mRes = uriParseUriA(&mState, mNormalizedUri.c_str()); + mRes = uriParseSingleUriA(&mUri, mNormalizedUri.c_str(), NULL); return mRes; } @@ -158,42 +161,69 @@ void LLUriParser::extractParts() } } +#if LL_DARWIN +typedef void(*sighandler_t)(int); +jmp_buf return_to_normalize; +void uri_signal_handler(int signal) +{ + // Apparently signal handler throwing an exception doesn't work. + // This is ugly and unsafe due to not unwinding content of uriparser library, + // but unless we have a way to catch this as NSexception, jump appears to be the only option. + longjmp(return_to_normalize, 1 /*setjmp will return this value*/); +} +#endif + S32 LLUriParser::normalize() { mNormalizedTmp = mTmpScheme; if (!mRes) { - // Uriparser is 3p software we can not directly fix. - // On winodws this probably requires SEH handling, but all - // crashes so far were on MAC in scope of uriNormalizeSyntaxExA. - try +#if LL_DARWIN + sighandler_t last_handler; + last_handler = signal(SIGILL, &uri_signal_handler); // illegal instruction + if (setjmp(return_to_normalize)) + { + // Issue: external library crashed via signal + // If you encountered this, please try to figure out what's wrong: + // 1. Verify that library's input is 'sane' + // 2. Check if we have an NSexception to work with (unlikely) + // 3. See if passing same string causes exception to repeat + // + // Crash happens at uriNormalizeSyntaxExA + // Warning!!! This does not properly unwind stack, + // if this can be handled by NSexception, it needs to be remade + llassert(0); + + LL_WARNS() << "Uriparser crashed with SIGILL, while processing: " << mNormalizedUri << LL_ENDL; + signal(SIGILL, last_handler); + return 1; + } +#endif + + mRes = uriNormalizeSyntaxExA(&mUri, URI_NORMALIZE_SCHEME | URI_NORMALIZE_HOST); + +#if LL_DARWIN + signal(SIGILL, last_handler); +#endif + + if (!mRes) { - mRes = uriNormalizeSyntaxExA(&mUri, URI_NORMALIZE_SCHEME | URI_NORMALIZE_HOST); + S32 chars_required; + mRes = uriToStringCharsRequiredA(&mUri, &chars_required); if (!mRes) { - S32 chars_required; - mRes = uriToStringCharsRequiredA(&mUri, &chars_required); + chars_required++; + std::vector<char> label_buf(chars_required); + mRes = uriToStringA(&label_buf[0], &mUri, chars_required, NULL); if (!mRes) { - chars_required++; - std::vector<char> label_buf(chars_required); - mRes = uriToStringA(&label_buf[0], &mUri, chars_required, NULL); - - if (!mRes) - { - mNormalizedUri = &label_buf[mTmpScheme ? 7 : 0]; - mTmpScheme = false; - } + mNormalizedUri = &label_buf[mTmpScheme ? 7 : 0]; + mTmpScheme = false; } } } - catch (...) - { - // At this point mNormalizedUri should contain http+unmodified input string. - LL_WARNS() << "Uriparser crashed processing: " << mNormalizedUri << LL_ENDL; - } } if(mTmpScheme) diff --git a/indra/llcommon/lluriparser.h b/indra/llcommon/lluriparser.h index cfbf54f3c8..92626b9054 100644 --- a/indra/llcommon/lluriparser.h +++ b/indra/llcommon/lluriparser.h @@ -76,7 +76,6 @@ private: std::string mFragment; std::string mNormalizedUri; - UriParserStateA mState; UriUriA mUri; S32 mRes; |