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#pragma once
#include "logger.hpp"
#include "utils.hpp"
#include <sys/mount.h>
#include <filesystem>
#include <optional>
#include <string>
namespace fs = std::filesystem;
class SmbShare
{
public:
SmbShare(const fs::path& mountDir) : mountDir(mountDir)
{
}
bool mount(const fs::path& remote, bool rw,
const std::unique_ptr<utils::CredentialsProvider>& credentials)
{
LogMsg(Logger::Debug, "Trying to mount remote : ", remote);
const std::string params = "sec=ntlmsspi,seal";
const std::string perm = rw ? "rw" : "ro";
std::string options = params + "," + perm;
std::string credentialsOpt;
if (!credentials)
{
LogMsg(Logger::Info, "Mounting as Guest");
credentialsOpt = "guest,username=OpenBmc";
}
else
{
if (!validateUsername(credentials->user()))
{
LogMsg(Logger::Error,
"Username for CIFS share can't contain ',' character");
return false;
}
credentials->escapeCommas();
credentialsOpt = "username=" + credentials->user() +
",password=" + credentials->password();
}
options += "," + credentialsOpt;
std::string versionOpt = "vers=3.1.1";
auto ec = mountWithSmbVers(remote, options, versionOpt);
if (ec)
{
// vers=3 will negotiate max version from 3.02 and 3.0
versionOpt = "vers=3";
ec = mountWithSmbVers(remote, options, versionOpt);
}
utils::secureCleanup(options);
utils::secureCleanup(credentialsOpt);
if (ec)
{
return false;
}
return true;
}
private:
std::string mountDir;
/* Check if username does not contain comma (,) character */
bool validateUsername(const std::string& username)
{
return username.find(',') == std::string::npos;
}
int mountWithSmbVers(const fs::path& remote, std::string options,
const std::string& version)
{
options += "," + version;
auto ec = ::mount(remote.c_str(), mountDir.c_str(), "cifs", 0,
options.c_str());
utils::secureCleanup(options);
if (ec)
{
LogMsg(Logger::Info, "Mount failed for ", version,
" with ec = ", ec, " errno = ", errno);
}
return ec;
}
};
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