/* mkpasswd.c - encrypt the given passwd using salt * * Copyright 2013 Ashwini Kumar <ak.ashwini@gmail.com> * Copyright 2013 Kyungwan Han <asura321@gmail.com> * * No Standard USE_MKPASSWD(NEWTOY(mkpasswd, ">2S:m:P#=0<0", TOYFLAG_USR|TOYFLAG_BIN)) config MKPASSWD bool "mkpasswd" default y depends on !TOYBOX_ON_ANDROID help usage: mkpasswd [-P FD] [-m TYPE] [-S SALT] [PASSWORD] [SALT] Crypt PASSWORD using crypt(3) -P FD Read password from file descriptor FD -m TYPE Encryption method (des, md5, sha256, or sha512; default is des) -S SALT */ #define FOR_mkpasswd #include "toys.h" GLOBALS( long pfd; char *method; char *salt; ) void mkpasswd_main(void) { char salt[MAX_SALT_LEN] = {0,}; int i; if (!TT.method) TT.method = "des"; if (toys.optc == 2) { if (TT.salt) error_exit("duplicate salt"); TT.salt = toys.optargs[1]; } if (-1 == (i = get_salt(salt, TT.method))) error_exit("bad -m"); if (TT.salt) { char *s = TT.salt; // In C locale, isalnum() means [A-Za-Z0-0] while (isalnum(*s) || *s == '.' || *s == '/') s++; if (*s) error_exit("salt not in [./A-Za-z0-9]"); snprintf(salt+i, sizeof(salt)-i, "%s", TT.salt); } // Because read_password() doesn't have an fd argument if (TT.pfd) { if (dup2(TT.pfd, 0) == -1) perror_exit("fd"); close(TT.pfd); } // If we haven't got a password on the command line, read it from tty or FD if (!*toys.optargs) { // Prompt and read interactively? if (isatty(0)) { if (read_password(toybuf, sizeof(toybuf), "Password: ")) perror_exit("password read failed"); } else { for (i = 0; i<sizeof(toybuf)-1; i++) { if (!xread(0, toybuf+i, 1)) break; if (toybuf[i] == '\n' || toybuf[i] == '\r') break; } toybuf[i] = 0; } } // encrypt & print the password xprintf("%s\n",crypt(*toys.optargs ? *toys.optargs : toybuf, salt)); }