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| author | Andrei Karas <akaras@inbox.ru> | 2018-08-04 01:49:22 +0300 |
|---|---|---|
| committer | Andrei Karas <akaras@inbox.ru> | 2018-08-06 01:53:26 +0300 |
| commit | 0cf92e82162051beffb11c230740f11bc02a104a (patch) | |
| tree | 6f3c43cef265bda305e23390f48043d25d012f3a /src/fs/paths.cpp | |
| parent | 0db888042bdbc2c1abecd1e4328ccb8ee448bd0e (diff) | |
| download | manaverse-0cf92e82162051beffb11c230740f11bc02a104a.tar.gz manaverse-0cf92e82162051beffb11c230740f11bc02a104a.tar.bz2 manaverse-0cf92e82162051beffb11c230740f11bc02a104a.tar.xz manaverse-0cf92e82162051beffb11c230740f11bc02a104a.zip | |
Add possible workaround for realpath overflow.
Diffstat (limited to 'src/fs/paths.cpp')
| -rw-r--r-- | src/fs/paths.cpp | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/fs/paths.cpp b/src/fs/paths.cpp index db9742daf..c13bdd966 100644 --- a/src/fs/paths.cpp +++ b/src/fs/paths.cpp @@ -38,17 +38,18 @@ #endif // USE_X11 #ifdef __native_client__ -#include <limits.h> #define realpath(N, R) strcpy(R, N) #endif // __native_client__ #ifdef WIN32 #include "fs/specialfolder.h" #define realpath(N, R) _fullpath((R), (N), _MAX_PATH) -#elif defined __OpenBSD__ +#endif + +#if defined __OpenBSD__ #include <limits> -#elif defined __native_client__ -#include <limits.h> +#else +#include <climits> #endif // WIN32 #ifndef WIN32 @@ -79,6 +80,12 @@ std::string getRealPath(const std::string &str) if (str.find("(unreachable)") != std::string::npos) return ""; #endif // defined(__GLIBC__) + + // possible fix for realpath overflow + if (str.size() > SSIZE_MAX / 10) + { + return std::string(); + } #if defined(__OpenBSD__) || defined(__ANDROID__) || defined(__native_client__) char *realPath = reinterpret_cast<char*>(calloc(PATH_MAX, sizeof(char))); if (!realPath) |