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Annotation of src/usr.bin/tcfs/tcfsgenkey.c, Revision 1.1

1.1     ! provos      1: /*
        !             2:  *     Transparent Cryptographic File System (TCFS) for NetBSD
        !             3:  *     Author and mantainer:   Luigi Catuogno [luicat@tcfs.unisa.it]
        !             4:  *
        !             5:  *     references:             http://tcfs.dia.unisa.it
        !             6:  *                             tcfs-bsd@tcfs.unisa.it
        !             7:  */
        !             8:
        !             9: /*
        !            10:  *     Base utility set v0.1
        !            11:  */
        !            12:
        !            13: #include <stdio.h>
        !            14: #include <strings.h>
        !            15:
        !            16: #include <miscfs/tcfs/tcfs.h>
        !            17: #include "tcfslib.h"
        !            18: #include "tcfserrors.h"
        !            19:
        !            20: char *genkey_usage="Usage: %s [OPTION]
        !            21: Generate a TCFS key adding it to the user entry into the TCFS database.
        !            22:
        !            23:   -h       Shows this help\n";
        !            24:
        !            25: int
        !            26: genkey_main (int argn, char *argv[])
        !            27: {
        !            28:        int val;
        !            29:        char *user, *passwd;
        !            30:        tcfspwdb *userinfo;
        !            31:        unsigned char *newkey, *cryptedkey;
        !            32:        tcfspwdb *user_info = NULL;
        !            33:
        !            34:        /*
        !            35:         * Going to check arguments
        !            36:         */
        !            37:        while ((val = getopt(argn, argv, "h")) != EOF)
        !            38:                switch (val) {
        !            39:                case 'h':
        !            40:                        show_usage(genkey_usage, argv[0]);
        !            41:                        exit (OK);
        !            42:                        break; /* Useless code */
        !            43:                default:
        !            44:                        fprintf (stderr, "Try %s --help for more information.\n", argv[0]);
        !            45:                        exit (ER_UNKOPT);
        !            46:                        break;
        !            47:                }
        !            48:
        !            49:        if (argn - optind)
        !            50:                tcfs_error (ER_UNKOPT, NULL);
        !            51:
        !            52:        /*
        !            53:         * Must be root to do all this stuff
        !            54:         */
        !            55:        if (geteuid())
        !            56:                tcfs_error (ER_CUSTOM, "I don't have root privileges!");
        !            57:
        !            58:        /*
        !            59:         * Authenticate user
        !            60:         */
        !            61:        if (!unix_auth (&user, &passwd, TRUE))
        !            62:                tcfs_error (ER_CUSTOM, "Who are you?!");
        !            63:
        !            64:        if (!tcfs_getpwnam (user, &user_info))
        !            65:                tcfs_error (ER_CUSTOM, "You do not have an entry in the TCFS key database.");
        !            66:
        !            67:        if (strlen(user_info->upw))
        !            68:                tcfs_error (ER_CUSTOM,"You already have a TCFS key.");
        !            69:
        !            70:        /*
        !            71:         * Generate a new key for the user.
        !            72:         */
        !            73:        newkey = gentcfskey ();
        !            74:        {
        !            75:                int i;
        !            76:                printf("gentcfskey: key =");
        !            77:                for (i = 0; i < KEYSIZE; i++)
        !            78:                        printf(" %02x", newkey[i]);
        !            79:                printf("\n");
        !            80:        }
        !            81:
        !            82:        /*
        !            83:         * Encrypt the generated key with user password
        !            84:         */
        !            85:        cryptedkey = (char*)calloc(UUKEYSIZE, sizeof(char));
        !            86:        if (!cryptedkey)
        !            87:                tcfs_error (ER_MEM, NULL);
        !            88:
        !            89:
        !            90:        if (!tcfs_encrypt_key (user, passwd, newkey, cryptedkey, USERKEY))
        !            91:                tcfs_error (ER_MEM, NULL);
        !            92:
        !            93:        /*
        !            94:         * Update TCFS key database
        !            95:         */
        !            96:        if (!tcfspwdbr_new (&userinfo))
        !            97:                tcfs_error (ER_MEM, NULL);
        !            98:
        !            99:        if (!tcfspwdbr_edit (&userinfo, F_USR|F_PWD, user, cryptedkey))
        !           100:                tcfs_error (ER_MEM, NULL);
        !           101:
        !           102:        /* TODO:
        !           103:           if (!change && tcfs_getpwnam (user, &userinfo))
        !           104:           tcfs_error (ER_CUSTOM, "Use -c to change the key.");
        !           105:        */
        !           106:
        !           107:        if (!tcfs_putpwnam (user, userinfo, U_CHG))
        !           108:                tcfs_error (ER_CUSTOM, "Error: cannot generate key.");
        !           109:
        !           110:        tcfs_error (ER_CUSTOM, "\nKey succesfully generated.");
        !           111: }