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Better .. detection

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This commit is contained in:
zv0n 2021-07-11 14:43:51 +02:00
parent 7c68754217
commit 6537cf3cc3
1 changed files with 28 additions and 19 deletions
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47
main.cpp
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@ -180,15 +180,15 @@ std::pair<bool, std::string> renamePath(std::string path, const RenameObject &re
if(renamer.getLibraryId() >= libraries.size()) {
return {false, "Invalid library id"};
}
if(path[0] == '/' && path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(path.find("..") != std::string::npos) {
return {false, "Path cannot contain '..'"};
}
if(path[0] != '/') {
path = cfg.getSourcePath() + "/" + path;
}
auto canon_path = FSLib::canonical(path);
if(canon_path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(!FSLib::exists(path)) {
return {false, "Source doesn't exist"};
}
@ -320,22 +320,31 @@ void getTargetDirectoriesRest( const std::shared_ptr< restbed::Session > &sessio
}
std::pair<bool, std::string> move(std::string path, uint64_t target_id, const std::string &containing_dir) {
if(path[0] == '/' && path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(path.find("..") != std::string::npos) {
return {false, "Path cannot contain '..'"};
}
if(path[0] != '/') {
path = cfg.getSourcePath() + "/" + path;
}
auto canon_path = FSLib::canonical(path);
std::cout << "CANON: " << canon_path << std::endl;
if(canon_path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(target_id >= cfg.getTargetPaths().size()) {
return {false, "Invalid target_id"};
}
if(!FSLib::exists(path)) {
return {false, "Source doesn't exist"};
}
auto target_dir = cfg.getTargetPaths()[target_id].first + FSLib::dir_divisor + containing_dir;
auto target_start = cfg.getTargetPaths()[target_id].first;
auto target_dir = target_start + FSLib::dir_divisor + containing_dir;
auto target_canon = FSLib::canonical(target_dir);
if(target_canon.substr(0, target_start.length()) != target_start && !target_canon.empty()) {
return {false, "Invalid target"};
}
// might result in needless false positives, but better be safe than sorry
if(target_canon.empty() && target_dir.find("..") != std::string::npos ) {
return {false, "Invalid target"};
}
if(!FSLib::exists(target_dir)) {
FSLib::createDirectoryFull(target_dir);
}
@ -384,15 +393,15 @@ void moveRest( const std::shared_ptr< restbed::Session > &session, rapidjson::Ge
}
std::pair<bool, std::string> remove(std::string path) {
if(path[0] == '/' && path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(path.find("..") != std::string::npos) {
return {false, "Path cannot contain '..'"};
}
if(path[0] != '/') {
path = cfg.getSourcePath() + "/" + path;
}
auto canon_path = FSLib::canonical(path);
if(canon_path.substr(0, cfg.getSourcePath().length()) != cfg.getSourcePath()) {
return {false, "Invalid path"};
}
if(!FSLib::exists(path)) {
return {false, "Source doesn't exist"};
}