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1 dashley 17 //$Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/nixprojs/cron/2006/php_rsa_auth_20061228/rsa_securid_auth.c,v 1.2 2006/12/28 21:58:18 dashley Exp $
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502     //patent against the party.
503     //
504     // If you convey a covered work, knowingly relying on a patent license,
505     //and the Corresponding Source of the work is not available for anyone
506     //to copy, free of charge and under the terms of this License, through a
507     //publicly available network server or other readily accessible means,
508     //then you must either (1) cause the Corresponding Source to be so
509     //available, or (2) arrange to deprive yourself of the benefit of the
510     //patent license for this particular work, or (3) arrange, in a manner
511     //consistent with the requirements of this License, to extend the patent
512     //license to downstream recipients. "Knowingly relying" means you have
513     //actual knowledge that, but for the patent license, your conveying the
514     //covered work in a country, or your recipient's use of the covered work
515     //in a country, would infringe one or more identifiable patents in that
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523     //you grant is automatically extended to all recipients of the covered
524     //work and works based on it.
525     //
526     // A patent license is "discriminatory" if it does not include within
527     //the scope of its coverage, prohibits the exercise of, or is
528     //conditioned on the non-exercise of one or more of the rights that are
529     //specifically granted under this License. You may not convey a covered
530     //work if you are a party to an arrangement with a third party that is
531     //in the business of distributing software, under which you make payment
532     //to the third party based on the extent of your activity of conveying
533     //the work, and under which the third party grants, to any of the
534     //parties who would receive the covered work from you, a discriminatory
535     //patent license (a) in connection with copies of the covered work
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537     //for and in connection with specific products or compilations that
538     //contain the covered work, unless you entered into that arrangement,
539     //or that patent license was granted, prior to 28 March 2007.
540     //
541     // Nothing in this License shall be construed as excluding or limiting
542     //any implied license or other defenses to infringement that may
543     //otherwise be available to you under applicable patent law.
544     //
545     // 12. No Surrender of Others' Freedom.
546     //
547     // If conditions are imposed on you (whether by court order, agreement or
548     //otherwise) that contradict the conditions of this License, they do not
549     //excuse you from the conditions of this License. If you cannot convey a
550     //covered work so as to satisfy simultaneously your obligations under this
551     //License and any other pertinent obligations, then as a consequence you may
552     //not convey it at all. For example, if you agree to terms that obligate you
553     //to collect a royalty for further conveying from those to whom you convey
554     //the Program, the only way you could satisfy both those terms and this
555     //License would be to refrain entirely from conveying the Program.
556     //
557     // 13. Use with the GNU Affero General Public License.
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559     // Notwithstanding any other provision of this License, you have
560     //permission to link or combine any covered work with a work licensed
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562     //combined work, and to convey the resulting work. The terms of this
563     //License will continue to apply to the part which is the covered work,
564     //but the special requirements of the GNU Affero General Public License,
565     //section 13, concerning interaction through a network will apply to the
566     //combination as such.
567     //
568     // 14. Revised Versions of this License.
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570     // The Free Software Foundation may publish revised and/or new versions of
571     //the GNU General Public License from time to time. Such new versions will
572     //be similar in spirit to the present version, but may differ in detail to
573     //address new problems or concerns.
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576     //Program specifies that a certain numbered version of the GNU General
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578     //option of following the terms and conditions either of that numbered
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580     //Foundation. If the Program does not specify a version number of the
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589     // Later license versions may give you additional or different
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592     //later version.
593     //
594     // 15. Disclaimer of Warranty.
595     //
596     // THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
597     //APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
598     //HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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603     //ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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619     // If the disclaimer of warranty and limitation of liability provided
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626     // END OF TERMS AND CONDITIONS
627     //
628     // How to Apply These Terms to Your New Programs
629     //
630     // If you develop a new program, and you want it to be of the greatest
631     //possible use to the public, the best way to achieve this is to make it
632     //free software which everyone can redistribute and change under these terms.
633     //
634     // To do so, attach the following notices to the program. It is safest
635     //to attach them to the start of each source file to most effectively
636     //state the exclusion of warranty; and each file should have at least
637     //the "copyright" line and a pointer to where the full notice is found.
638     //
639     // <one line to give the program's name and a brief idea of what it does.>
640     // Copyright (C) <year> <name of author>
641     //
642     // This program is free software: you can redistribute it and/or modify
643     // it under the terms of the GNU General Public License as published by
644     // the Free Software Foundation, either version 3 of the License, or
645     // (at your option) any later version.
646     //
647     // This program is distributed in the hope that it will be useful,
648     // but WITHOUT ANY WARRANTY; without even the implied warranty of
649     // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
650     // GNU General Public License for more details.
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652     // You should have received a copy of the GNU General Public License
653     // along with this program. If not, see <http://www.gnu.org/licenses/>.
654     //
655     //Also add information on how to contact you by electronic and paper mail.
656     //
657     // If the program does terminal interaction, make it output a short
658     //notice like this when it starts in an interactive mode:
659     //
660     // <program> Copyright (C) <year> <name of author>
661     // This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
662     // This is free software, and you are welcome to redistribute it
663     // under certain conditions; type `show c' for details.
664     //
665     //The hypothetical commands `show w' and `show c' should show the appropriate
666     //parts of the General Public License. Of course, your program's commands
667     //might be different; for a GUI interface, you would use an "about box".
668     //
669     // You should also get your employer (if you work as a programmer) or school,
670     //if any, to sign a "copyright disclaimer" for the program, if necessary.
671     //For more information on this, and how to apply and follow the GNU GPL, see
672     //<http://www.gnu.org/licenses/>.
673     //
674     // The GNU General Public License does not permit incorporating your program
675     //into proprietary programs. If your program is a subroutine library, you
676     //may consider it more useful to permit linking proprietary applications with
677     //the library. If this is what you want to do, use the GNU Lesser General
678     //Public License instead of this License. But first, please read
679     //<http://www.gnu.org/philosophy/why-not-lgpl.html>.
680     //-------------------------------------------------------------------------------------------------
681     //
682     //rsa_securid_auth.c : Authenticates a userid and Securid FOB value
683     // passed via the command-line.
684     //
685     // Designed to be called via a PHP script with
686     // UID/GID apch443a.
687     //
688     //Invocation:
689     // - rsa_securid_auth username fobvalue
690     // Attempts to authenticate the username with the FOB value.
691     //
692     // - rsa_securid_auth username fobvalue1 fobvalue2
693     // This invocation form will be used if a previous invocation
694     // has indicated that the next FOB value is required. It was
695     // determined empirically that the software has a wide enough
696     // window that using two successive FOB values (i.e. no "next"
697     // sequence, i.e. the first FOB value is "late") will work
698     // fine to cover this case. This makes for easier web
699     // programming.
700     //
701     //Return values:
702     // All information is passed back in the exit code. Possible
703     // values:
704     // 0 : Authentication successful (either with one or two FOB
705     // codes).
706     // 1 : Next code invocation required.
707     // 2 : Authentication failed due to return values from the
708     // RSA software indicating authentication failure.
709     // 3 : Authentication failed because the RSA software indicated
710     // an error condition.
711     // 4 : Authentication failed because this program detected
712     // an error condition (most likely ill-formed parameters).
713     //
714    
715     #ifdef WIN32
716     #include <windows.h>
717     #define sleep(x) Sleep(x*1000)
718     #endif
719    
720     #include <stdio.h>
721     #include <stdlib.h>
722     #include <string.h>
723    
724     #ifndef WIN32
725     #include <termio.h>
726     #include <fcntl.h>
727     #endif
728    
729     // in NT this allows using the aceclnt.lib file for linking
730     #define USE_ACE_AGENT_API_PROTOTYPES
731     #include "acexport.h"
732    
733     #ifndef WIN32
734     int sd_echo_off(void);
735     int sd_echo_on(void);
736     #endif
737    
738    
739     //If the passed character is an upper-case letter, converts it to lower-case.
740     //all other data is left unchanged.
741     //
742     static char char_to_lower_case(char char_in)
743     {
744     switch(char_in)
745     {
746     default:
747     return(char_in);
748     break;
749     case 'A':
750     return('a');
751     break;
752     case 'B':
753     return('b');
754     break;
755     case 'C':
756     return('c');
757     break;
758     case 'D':
759     return('d');
760     break;
761     case 'E':
762     return('e');
763     break;
764     case 'F':
765     return('f');
766     break;
767     case 'G':
768     return('g');
769     break;
770     case 'H':
771     return('h');
772     break;
773     case 'I':
774     return('I');
775     break;
776     case 'J':
777     return('j');
778     break;
779     case 'K':
780     return('k');
781     break;
782     case 'L':
783     return('l');
784     break;
785     case 'M':
786     return('m');
787     break;
788     case 'N':
789     return('n');
790     break;
791     case 'O':
792     return('o');
793     break;
794     case 'P':
795     return('p');
796     break;
797     case 'Q':
798     return('q');
799     break;
800     case 'R':
801     return('r');
802     break;
803     case 'S':
804     return('s');
805     break;
806     case 'T':
807     return('t');
808     break;
809     case 'U':
810     return('u');
811     break;
812     case 'V':
813     return('v');
814     break;
815     case 'W':
816     return('w');
817     break;
818     case 'X':
819     return('x');
820     break;
821     case 'Y':
822     return('y');
823     break;
824     case 'Z':
825     return('z');
826     break;
827     }
828     }
829    
830    
831     //Returns 1 if the passed character is a digit, or 0 otherwise.
832     //
833     static int is_a_digit(char char_in)
834     {
835     switch(char_in)
836     {
837     case '0':
838     case '1':
839     case '2':
840     case '3':
841     case '4':
842     case '5':
843     case '6':
844     case '7':
845     case '8':
846     case '9':
847     return(1);
848     break;
849     default:
850     return(0);
851     break;
852     }
853     }
854    
855     //Returns 1 if the passed character is a lower-case letter, or 0 otherwise.
856     //
857     static int is_a_lc_letter(char char_in)
858     {
859     switch(char_in)
860     {
861     case 'a':
862     case 'b':
863     case 'c':
864     case 'd':
865     case 'e':
866     case 'f':
867     case 'g':
868     case 'h':
869     case 'i':
870     case 'j':
871     case 'k':
872     case 'l':
873     case 'm':
874     case 'n':
875     case 'o':
876     case 'p':
877     case 'q':
878     case 'r':
879     case 's':
880     case 't':
881     case 'u':
882     case 'v':
883     case 'w':
884     case 'x':
885     case 'y':
886     case 'z':
887     return(1);
888     break;
889     default:
890     return(0);
891     break;
892     }
893     }
894    
895    
896     //Returns 1 if the passed character is a valid first character of a username
897     //or 0 otherwise.
898     //
899     static int is_valid_username_first_char(char char_in)
900     {
901     return(is_a_lc_letter(char_in));
902     }
903    
904    
905     //Returns 1 if the passed character is a non-first character of a username
906     //or 0 otherwise.
907     //
908     static int is_valid_username_non_first_char(char char_in)
909     {
910     return(is_a_lc_letter(char_in) | is_a_digit(char_in));
911     }
912    
913    
914     //Copies a string from src to dst, up to a maximum of n characters.
915     //The n characters exceed the zero terminator. If the limit is exceeded
916     //the string is truncated.
917     //
918     static void str_guarded_copy(char *dst, const char *src, int n)
919     {
920     int i;
921    
922     for (i=0; (i<(n-1)) && (src[i]); i++)
923     {
924     dst[i] = src[i];
925     }
926    
927     dst[i] = 0;
928     }
929    
930    
931     // a simple main() to drive this program
932     int main(int argc, char* argv[])
933     {
934     SDI_HANDLE aceHdl;
935     SD_CHAR resp[128];
936     SD_CHAR prompt[512];
937     SD_I32 promptLen;
938     SD_I32 nextRespLen;
939     SD_I32 respTimeout;
940     SD_BOOL moreFlag;
941     SD_BOOL noechoFlag;
942     SD_I32 AuthStatus;
943     int i;
944     int ret;
945     int rv;
946     char username [100];
947     char passcode1[100];
948     char passcode2[100];
949    
950     if ((argc != 3) && (argc != 4))
951     {
952     exit(4);
953     }
954    
955     //Copy over the username. It has to be 20 characters or less, all letters and numbers,
956     //starting with a letter.
957     str_guarded_copy(username, argv[1], sizeof(username));
958    
959     //The username must be at least one character.
960     if (! strlen(username))
961     exit(4);
962    
963     //Convert all characters of the username to lower-case if they are upper.
964     for (i=0; i<strlen(username); i++)
965     username[i] = char_to_lower_case(username[i]);
966    
967     //The first character of the username must be valid for a user name.
968     if (! is_valid_username_first_char(username[0]))
969     exit(4);
970    
971     //Subsequent characters of the username must be valid.
972     for (i=1; i<strlen(username); i++)
973     if (! is_valid_username_non_first_char(username[i]))
974     exit(4);
975    
976     //The first passcode must be exactly six digits and must be all digits.
977     str_guarded_copy(passcode1, argv[2], sizeof(passcode1));
978     if (strlen(passcode1) != 6)
979     return(4);
980     for (i=0; i<strlen(passcode1); i++)
981     if (! is_a_digit(passcode1[i]))
982     exit(4);
983    
984     //The second passcode, if supplied, must be exactly six digits and must be all digits.
985     if (argc >= 4)
986     {
987     str_guarded_copy(passcode2, argv[3], sizeof(passcode2));
988     if (strlen(passcode2) != 6)
989     return(4);
990     for (i=0; i<strlen(passcode2); i++)
991     if (! is_a_digit(passcode2[i]))
992     exit(4);
993     }
994    
995     if (!AceInitializeEx(/* "/etc/rsaauthmgr/ace/data/" */ "/etc/rsa_securid_apch443a_auth", NULL, 0))
996     {
997     exit(3);
998     }
999    
1000     if (SD_Init(&aceHdl) != ACM_OK) /* initialize socket */
1001     {
1002     exit(3);
1003     }
1004    
1005     ret = SD_Lock(aceHdl, username);
1006    
1007     if (ret != ACM_OK)
1008     {
1009     exit(3);
1010     }
1011    
1012     ret = SD_Check(aceHdl, passcode1, username);
1013    
1014     switch (ret)
1015     {
1016     case ACM_OK:
1017     rv = 0;
1018     break;
1019    
1020     case ACM_ACCESS_DENIED:
1021     rv = 2;
1022     break;
1023    
1024     case ACE_UNDEFINED_PASSCODE:
1025     rv = 2;
1026     break;
1027    
1028     case ACE_UNDEFINED_USERNAME:
1029     rv = 2;
1030     break;
1031    
1032     case ACE_ERR_INVALID_HANDLE:
1033     rv = 2;
1034     break;
1035    
1036     case ACM_NEXT_CODE_REQUIRED:
1037     if (argc == 4)
1038     {
1039     ret = SD_Next(aceHdl, passcode2);
1040    
1041     if (ret == ACM_OK)
1042     {
1043     rv = 0;
1044     }
1045     else
1046     {
1047     rv = 2;
1048     }
1049     }
1050     else
1051     {
1052     rv = 1;
1053     }
1054    
1055     break;
1056    
1057     case ACM_NEW_PIN_REQUIRED:
1058     rv = 2;
1059     break;
1060    
1061     default:
1062     rv = 2;
1063     break;
1064     }
1065    
1066     SD_Close(aceHdl); /* Shutdown the network connection */
1067    
1068    
1069     return(rv);
1070     }
1071    
1072    
1073     //$Log: rsa_securid_auth.c,v $
1074     //Revision 1.2 2006/12/28 21:58:18 dashley
1075     //Extra lines removed.
1076     //
1077     //Revision 1.1 2006/12/28 21:57:49 dashley
1078     //Initial checkin.

dashley@gmail.com
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