TAuthenticate

class TAuthenticate : public TObject

    private:

                        Bool_t Authenticate()
                 static Bool_t CheckHost(const char* Host, const char* host)
                 static Bool_t CleanupSecContext(TSecContext* ctx, Bool_t all)
                         Int_t ClearAuth(TString& user, TString& passwd, Bool_t& pwhash)
                   static void FileExpand(const char* fin, FILE* ftmp)
                         Int_t GenRSAKeys()
                        Bool_t GetPwHash() const
                         char* GetRandString(Int_t Opt, Int_t Len)
                         Int_t GetRSAKey() const
                  TSecContext* GetSecContext() const
      TAuthenticate::ESecurity GetSecurity() const
                        Bool_t GetSRPPwd() const
                   const char* GetSshUser(TString user) const
                        Bool_t GetUserPasswd(TString& user, TString& passwd, Bool_t& pwhash, Bool_t srppwd)
                         Int_t GetVersion() const
                   static void RemoveSecContext(TSecContext* ctx)
                         Int_t RfioAuth(TString& user)
                          void SetEnvironment()
                         Int_t SshAuth(TString& user)
                         Int_t SshError(const char* errfile)

    protected:

      static void SetReadHomeAuthrc(Bool_t readhomeauthrc)

    public:

                          TAuthenticate(TSocket* sock, const char* remote, const char* proto, const char* user)
                          TAuthenticate(const TAuthenticate&)
                  virtual ~TAuthenticate()
              static void AuthError(const char* where, Int_t error)
                    Int_t AuthExists(TString User, Int_t method, const char* Options, Int_t* Message, Int_t* Rflag, CheckSecCtx_t funcheck)
                   Bool_t CheckNetrc(TString& user, TString& passwd)
                   Bool_t CheckNetrc(TString& user, TString& passwd, Bool_t& pwhash, Bool_t srppwd)
            static Bool_t CheckProofAuth(Int_t cSec, TString& det)
           static TClass* Class()
              static void CleanupSecContextAll(Option_t* opt = "k")
             static Int_t DecodeRSAPublic(const char* rsapubexport, rsa_NUMBER& n, rsa_NUMBER& d, void** rsassl = 0)
            static TList* GetAuthInfo()
       static const char* GetAuthMethod(Int_t idx) const
             static Int_t GetAuthMethodIdx(const char* meth)
            static Bool_t GetAuthReUse()
             static Int_t GetClientProtocol()
             static char* GetDefaultDetails(Int_t method, Int_t opt, const char* user)
       static const char* GetDefaultUser() const
           static TDatime GetGlobalExpDate()
            static Bool_t GetGlobalPwHash()
            static Bool_t GetGlobalSRPPwd()
       static const char* GetGlobalUser() const
      static GlobusAuth_t GetGlobusAuthHook()
               THostAuth* GetHostAuth() const
        static THostAuth* GetHostAuth(const char* host, const char* user, Option_t* opt = "R", Int_t* Exact = 0)
       static const char* GetKrb5Principal() const
            static Bool_t GetPromptUser()
            static TList* GetProofAuthInfo()
              const char* GetProtocol() const
              const char* GetRemoteHost() const
             static Int_t GetRSAInit()
                    Int_t GetRSAKeyType() const
       static const char* GetRSAPubExport(Int_t key = 0) const
                 TSocket* GetSocket() const
              const char* GetUser() const
        static THostAuth* HasHostAuth(const char* host, const char* user, Option_t* opt = "R")
              static void InitRandom()
          virtual TClass* IsA() const
              static void MergeHostAuthList(TList* Std, TList* New, Option_t* Opt)
           TAuthenticate& operator=(const TAuthenticate&)
             static char* PromptPasswd(const char* prompt = "Password: ")
             static char* PromptUser(const char* remote)
              static void ReadProofConf(const char* proofconf)
             static Int_t ReadRootAuthrc(const char* proofconf = "0")
              static void RemoveHostAuth(THostAuth* ha, Option_t* opt)
             static Int_t SecureRecv(TSocket* Socket, Int_t dec, Int_t KeyType, char** Out)
             static Int_t SecureSend(TSocket* Socket, Int_t enc, Int_t KeyType, const char* In)
             static Int_t SendRSAPublicKey(TSocket* Socket, Int_t key = 0)
              static void SetAuthReUse(Bool_t authreuse)
              static void SetDefaultRSAKeyType(Int_t key)
              static void SetDefaultUser(const char* defaultuser)
              static void SetGlobalExpDate(TDatime expdate)
              static void SetGlobalPasswd(const char* passwd)
              static void SetGlobalPwHash(Bool_t pwhash)
              static void SetGlobalSRPPwd(Bool_t srppwd)
              static void SetGlobalUser(const char* user)
              static void SetGlobusAuthHook(GlobusAuth_t func)
              static void SetKrb5AuthHook(Krb5Auth_t func)
              static void SetPromptUser(Bool_t promptuser)
              static void SetRSAInit(Int_t init = 1)
                     void SetRSAKeyType(Int_t key)
             static Int_t SetRSAPublic(const char* rsapubexport, Int_t klen)
                     void SetSecContext(TSecContext* ctx)
              static void SetSecureAuthHook(SecureAuth_t func)
              static void Show(Option_t* opt = "S")
             virtual void ShowMembers(TMemberInspector& insp, char* parent)
             virtual void Streamer(TBuffer& b)
                     void StreamerNVirtual(TBuffer& b)

Data Members

    private:

                       TString fDetails           logon details (method dependent ...)
                    THostAuth* fHostAuth          pointer to relevant authentication info
                       TString fPasswd            user's password
                       TString fProtocol          remote service (rootd, proofd)
                        Bool_t fPwHash            kTRUE if fPasswd is a passwd hash
                       TString fRemote            remote host to which we want to connect
                         Int_t fRSAKey            Type of RSA key used
                  TSecContext* fSecContext        pointer to relevant sec context
      TAuthenticate::ESecurity fSecurity          actual logon security level
                      TSocket* fSocket            connection to remote daemon
                        Bool_t fSRPPwd            kTRUE if fPasswd is a SRP passwd
                         Int_t fVersion           0,1,2, ... accordingly to remote daemon version
                       TString fUser              user to be authenticated
                 static TList* fgAuthInfo         
                static TString fgAuthMeth[6]      
                 static Bool_t fgAuthReUse        kTRUE is ReUse required
                  static Int_t fgClientProtocol   client protocol level
                static TString fgDefaultUser      Default user information
                static TDatime fgExpDate          Expiring date for new security contexts
           static GlobusAuth_t fgGlobusAuthHook   
             static Krb5Auth_t fgKrb5AuthHook     
                static TString fgKrb5Principal    Principal for Krb5 ticket
                static TDatime fgLastAuthrc       Time of last reading of fgRootAuthrc
                static TString fgPasswd           
                 static Bool_t fgPromptUser       kTRUE if user prompt required
                 static TList* fgProofAuthInfo    Specific lists of THostAuth fro proof
                 static Bool_t fgPwHash           kTRUE if fgPasswd is a passwd hash
                 static Bool_t fgReadHomeAuthrc   kTRUE to look for $HOME/.rootauthrc
                static TString fgRootAuthrc       Path to last rootauthrc-like file read
                  static Int_t fgRSAKey           Default type of RSA key to be tried
                  static Int_t fgRSAInit          
                static rsa_KEY fgRSAPriKey        
                static rsa_KEY fgRSAPubKey        
         static rsa_KEY_export fgRSAPubExport[2]  
           static SecureAuth_t fgSecAuthHook      
                 static Bool_t fgSRPPwd           kTRUE if fgPasswd is a SRP passwd
                static TString fgUser             
                 static Bool_t fgUsrPwdCrypt      kTRUE if encryption for UsrPwd is required
                  static Int_t fgLastError        Last error code processed by AuthError()

    public:

      static const TAuthenticate::ESecurity kClear   
      static const TAuthenticate::ESecurity kSRP     
      static const TAuthenticate::ESecurity kKrb5    
      static const TAuthenticate::ESecurity kGlobus  
      static const TAuthenticate::ESecurity kSSH     
      static const TAuthenticate::ESecurity kRfio    

Class Description

                                                                      
 TAuthenticate                                                        
                                                                      
 An authentication module for ROOT based network services, like rootd 
 and proofd.                                                          
                                                                      

 Create authentication object.

 Authenticate to remote rootd or proofd server. Return kTRUE if
 authentication succeeded.

 Set default authentication environment. The values are inferred
 from fSecurity and fDetails.

 Try to get user name and passwd from several sources.

 Try to get user name and passwd from the ~/.rootnetrc or
 ~/.netrc files. For more info see the version with 4 arguments.
 This version is maintained for backward compatability reasons.

 Try to get user name and passwd from the ~/.rootnetrc or
 ~/.netrc files. First ~/.rootnetrc is tried, after that ~/.netrc.
 These files will only be used when their access masks are 0600.
 Returns kTRUE if user and passwd were found for the machine
 specified in the URL. If kFALSE, user and passwd are "".
 If srppwd == kTRUE then a SRP ('secure') pwd is searched for in
 the files.
 The boolean pwhash is set to kTRUE if the returned passwd is to
 be understood as password hash, i.e. if the 'password-hash' keyword
 is found in the 'machine' lines; not implemented for 'secure'
 and the .netrc file.
 The format of these files are:

 # this is a comment line
 machine <machine fqdn> login <user> password <passwd>
 machine <machine fqdn> login <user> password-hash <passwd>

 and in addition ~/.rootnetrc also supports:

 secure <machine fqdn> login <user> password <passwd>

 for the secure protocols. All lines must start in the first column.

 Static method returning the global user.

 Static method returning the global password hash flag.

 Static method returning the global SRP password flag.

 Static method returning default expiring date for new validity contexts

 Static method returning the default user information.

 Static method returning the principal to be used to init Krb5 tickets.

 Static method returning the authentication reuse settings.

 Static method returning the prompt user settings.

 Static method returning the method corresponding to idx.

 Static method returning the method index (which can be used to find
 the method in GetAuthMethod()). Returns -1 in case meth is not found.

 Static method to prompt for the user name to be used for authentication
 to rootd or proofd. User is asked to type user name.
 Returns user name (which must be deleted by caller) or 0.
 If non-interactive run (eg ProofServ) returns default user.

 Static method to prompt for the user's passwd to be used for
 authentication to rootd or proofd. Uses non-echoing command line
 to get passwd. Returns passwd (which must de deleted by caller) or 0.
 If non-interactive run (eg ProofServ) returns -1

 Static method returning the globus authorization hook.

 Static method returning the RSA public keys.

 Static method returning the RSA initialization flag.

 Static method setting the default type of RSA key.

 Static method setting RSA initialization flag.

 Static method returning the list with authentication details.

 Static method returning the list with authentication directives
 to be sent to proof.

 Print error string depending on error code.

 Set global user name to be used for authentication to rootd or proofd.

 Set global passwd to be used for authentication to rootd or proofd.

 Set global passwd hash flag to be used for authentication to rootd or proofd.

 Set global SRP passwd flag to be used for authentication to rootd or proofd.

 Set flag controlling the reading of $HOME/.rootauthrc.
 In PROOF the administrator may want to switch off private settings.
 Always true, may only be set false via option to proofd.

 Set default expiring date for new validity contexts

 Set default user name.

 Set global AuthReUse flag

 Set global PromptUser flag

 Set secure authorization function. Automatically called when libSRPAuth
 is loaded.

 Set kerberos5 authorization function. Automatically called when
 libKrb5Auth is loaded.

 Set Globus authorization function. Automatically called when
 libGlobusAuth is loaded.

 SSH error parsing: returns
     0  :  no error or fatal
     1  :  should retry (eg 'connection closed by remote host')

 SSH client authentication code.

 Method returning the User to be used for the ssh login.
 Looks first at SSH.Login and finally at env USER.
 If SSH.LoginPrompt is set to 'yes' it prompts for the 'login name'

 Check if 'Host' matches 'host':
 this means either equal or "containing" it, even with wild cards *
 in the first field (in the case 'host' is a name, ie not IP address)
 Returns kTRUE if the two matches.

 UidGid client authentication code.
 Returns 0 in case authentication failed
         1 in case of success
        <0 in case of system error

 UsrPwd client authentication code.
 Returns 0 in case authentication failed
         1 in case of success

 Sets fUser=user and search fgAuthInfo for the entry pertaining to
 (host,user), setting fHostAuth accordingly.
 If Opt = "P" use fgProofAuthInfo list instead
 If no entry is found fHostAuth is not changed

 Checks if a THostAuth with exact match for {host,user} exists
 in the fgAuthInfo list
 If Opt = "P" use ProofAuthInfo list instead
 Returns pointer to it or 0

 Expands include directives found in fexp files
 The expanded, temporary file, is pointed to by 'ftmp'
 and should be already open. To be called recursively.

 Determine default authentication details for method 'sec' and user 'usr'.
 Checks .rootrc family files. Returned string must be deleted by the user.

 Remove THostAuth instance from the list

 Print info about the authentication sector.
 If 'opt' contains 's' or 'S' prints information about established TSecContext,
 else prints information about THostAuth (if 'opt' is 'p' or 'P', prints
 Proof related information)

 Check if we have a valid established sec context in memory
 Retrieves relevant info and negotiates with server.
 Options = "Opt,strlen(User),User.Data()"
 Message = kROOTD_USER, ...

 Initialize random machine using seed from /dev/urandom
 (or current time if /dev/urandom not available).

 Generate a valid pair of private/public RSA keys to protect for
 authentication token exchange

 Allocates and fills a 0 terminated buffer of length Len+1 with
 Len random characters.
 Returns pointer to the buffer (to be deleted by the caller)
 Opt = 0      any non dangerous char
       1      letters and numbers  (upper and lower case)
       2      hex characters       (upper and lower case)

 Encode null terminated str using the session private key indcated by enc
 and sends it over the network
 Returns number of bytes sent, or -1 in case of error.
 enc = 1 for private encoding, enc = 2 for public encoding

 Receive str from sock and decode it using key indicated by key type
 Return number of received bytes or -1 in case of error.
 dec = 1 for private decoding, dec = 2 for public decoding

 Store RSA public keys from export string RSAPubExport.

 Store RSA public keys from export string RSAPubExport.
 Returns type of stored key, or -1 is not recognized

 Receives Server RSA Public key
 Sends local RSA public key encoded

 Static method returning supported client protocol.

 Ask remote client to cleanup all active security context
 Static method called in TROOT for final cleanup

 Ask remote client to cleanup security context 'ctx'
 If 'all', all sec context with the same host as ctx
 are cleaned.
 Static method called by ~TSecContext

 Read authentication directives from $ROOTAUTHRC, $HOME/.rootauthrc or
 <Root_etc_dir>/system.rootauthrc and create related THostAuth objects.
 Files are read only if they changed since last reading
 If 'proofconf' is defined, check also file proofconf for directives

 Collect information needed for authentication to slaves from
 $HOME/.proof.conf or <Root_Dir>/proof/etc/proof.conf
 Update or create THostAuth objects accordingly
 Add them to the ProofAuthInfo list.

 Check if the authentication method can be attempted for the client.

 Tool for updating fgAuthInfo or fgProofAuthInfo
 'New' contains list of last input information through (re)reading
 of a rootauthrc-alike file. 'New' info has priority.
 'Std' is cleaned from inactive members.
 'New' members used to update existing members in 'Std' are
 removed from 'New', do that they do not leak
 Opt = "P" for ProofAuthInfo.

 Tool for removing SecContext ctx from THostAuth listed in
 fgAuthInfo or fgProofAuthInfo

Inline Functions

                            void ~TAuthenticate()
                          Bool_t GetPwHash() const
                           Int_t GetRSAKey() const
                    TSecContext* GetSecContext() const
        TAuthenticate::ESecurity GetSecurity() const
                          Bool_t GetSRPPwd() const
                           Int_t GetVersion() const
                     const char* GetProtocol() const
                     const char* GetRemoteHost() const
                           Int_t GetRSAKeyType() const
                        TSocket* GetSocket() const
                     const char* GetUser() const
                            void SetRSAKeyType(Int_t key)
                            void SetSecContext(TSecContext* ctx)
                      THostAuth* GetHostAuth(const char* host, const char* user, Option_t* opt = "R", Int_t* Exact = 0)
                         TClass* Class()
                         TClass* IsA() const
                            void ShowMembers(TMemberInspector& insp, char* parent)
                            void Streamer(TBuffer& b)
                            void StreamerNVirtual(TBuffer& b)
                   TAuthenticate TAuthenticate(const TAuthenticate&)
                  TAuthenticate& operator=(const TAuthenticate&)