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Sanitize lang_code and full_version received from client

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fixes #14262
This commit is contained in:
sfan5 2024-01-15 22:34:27 +01:00
parent bdc124ba41
commit e8008c1b21
2 changed files with 25 additions and 13 deletions
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26
src/clientiface.cpp
View File

@ -33,6 +33,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "util/srp.h"
#include "face_position_cache.h"
static std::string string_sanitize_ascii(const std::string &s, u32 max_length)
{
std::string out;
for (char c : s) {
if (out.size() >= max_length)
break;
if (c > 32 && c < 127)
out.push_back(c);
}
return out;
}
const char *ClientInterface::statenames[] = {
"Invalid",
"Disconnecting",
@ -46,8 +58,6 @@ const char *ClientInterface::statenames[] = {
"SudoMode",
};
std::string ClientInterface::state2Name(ClientState state)
{
return statenames[state];
@ -639,9 +649,17 @@ void RemoteClient::resetChosenMech()
chosen_mech = AUTH_MECHANISM_NONE;
}
u64 RemoteClient::uptime() const
void RemoteClient::setVersionInfo(u8 major, u8 minor, u8 patch, const std::string &full)
{
return porting::getTimeS() - m_connection_time;
m_version_major = major;
m_version_minor = minor;
m_version_patch = patch;
m_full_version = string_sanitize_ascii(full, 64);
}
void RemoteClient::setLangCode(const std::string &code)
{
m_lang_code = string_sanitize_ascii(code, 12);
}
ClientInterface::ClientInterface(const std::shared_ptr<con::Connection> & con)

12
src/clientiface.h
View File

@ -329,16 +329,10 @@ public:
{ serialization_version = m_pending_serialization_version; }
/* get uptime */
u64 uptime() const;
u64 uptime() const { return porting::getTimeS() - m_connection_time; }
/* set version information */
void setVersionInfo(u8 major, u8 minor, u8 patch, const std::string &full)
{
m_version_major = major;
m_version_minor = minor;
m_version_patch = patch;
m_full_version = full;
}
void setVersionInfo(u8 major, u8 minor, u8 patch, const std::string &full);
/* read version information */
u8 getMajor() const { return m_version_major; }
@ -346,7 +340,7 @@ public:
u8 getPatch() const { return m_version_patch; }
const std::string &getFullVer() const { return m_full_version; }
void setLangCode(const std::string &code) { m_lang_code = code; }
void setLangCode(const std::string &code);
const std::string &getLangCode() const { return m_lang_code; }
void setCachedAddress(const Address &addr) { m_addr = addr; }