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Annotation of src/usr.bin/tcfs/unix_auth.c, Revision 1.4

1.4     ! fgsch       1: /*     $OpenBSD$       */
        !             2:
1.1       provos      3: /*
                      4:  *     Transparent Cryptographic File System (TCFS) for NetBSD
                      5:  *     Author and mantainer:   Luigi Catuogno [luicat@tcfs.unisa.it]
                      6:  *
                      7:  *     references:             http://tcfs.dia.unisa.it
                      8:  *                             tcfs-bsd@tcfs.unisa.it
                      9:  */
                     10:
                     11: /*
                     12:  *     Base utility set v0.1
                     13:  */
                     14:
                     15: #include <sys/param.h>
                     16: #include <limits.h>
1.2       fgsch      17: #include <pwd.h>
                     18: #include <stdio.h>
                     19: #include <stdlib.h>
1.1       provos     20: #include <string.h>
1.2       fgsch      21: #include <unistd.h>
1.1       provos     22:
                     23: #include <miscfs/tcfs/tcfs.h>
                     24: #include "tcfslib.h"
                     25: #include "tcfserrors.h"
                     26:
                     27: int
1.3       aaron      28: unix_auth(char **user, char **password, int flag)
1.1       provos     29: {
                     30:        char *luser, *passwd;
                     31:        struct passwd *passentry;
                     32:
1.3       aaron      33:        luser = (char *)calloc(LOGIN_NAME_MAX, sizeof(char));
                     34:        passwd = (char *)calloc(_PASSWORD_LEN, sizeof(char));
1.1       provos     35:
                     36:        if (!luser || !passwd)
1.3       aaron      37:                tcfs_error(ER_MEM, NULL);
1.1       provos     38:
                     39:        if (flag) {
                     40:                passentry = getpwuid(getuid());
                     41:                strlcpy(luser, passentry->pw_name, LOGIN_NAME_MAX);
                     42:        } else {
1.3       aaron      43:                printf("Enter user: ");
1.1       provos     44:                fgets(luser, LOGIN_NAME_MAX, stdin);
                     45:                luser[strlen(luser)-1] = '\0';
                     46:                passentry = getpwnam(luser);
                     47:        }
                     48:
                     49:        passwd = getpass("Password:");
                     50:
                     51:        if (passentry == NULL) {
1.3       aaron      52:                bzero(passwd, strlen(passwd));
                     53:                return (0);
1.1       provos     54:        }
                     55:
                     56:        if (strcmp(crypt(passwd, passentry->pw_passwd), passentry->pw_passwd))
                     57:                return (0);
                     58:
                     59:        *user = luser;
                     60:        *password = passwd;
                     61:
                     62:        return (1);
                     63: }