1 /* 2 * Copyright (c) 2002 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <err.h> 32 #include <stdio.h> 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <uuid.h> 36 37 static void 38 usage(void) 39 { 40 (void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n"); 41 exit(1); 42 } 43 44 int 45 main(int argc, char *argv[]) 46 { 47 FILE *fp; 48 uuid_t *store, *uuid; 49 char *p; 50 int ch, count, i, iterate; 51 52 count = -1; /* no count yet */ 53 fp = stdout; /* default output file */ 54 iterate = 0; /* not one at a time */ 55 while ((ch = getopt(argc, argv, "1n:o:")) != -1) 56 switch (ch) { 57 case '1': 58 iterate = 1; 59 break; 60 case 'n': 61 if (count > 0) 62 usage(); 63 count = strtol(optarg, &p, 10); 64 if (*p != 0 || count < 1) 65 usage(); 66 break; 67 case 'o': 68 if (fp != stdout) 69 errx(1, "multiple output files not allowed"); 70 fp = fopen(optarg, "w"); 71 if (fp == NULL) 72 err(1, "fopen"); 73 break; 74 default: 75 usage(); 76 } 77 argv += optind; 78 argc -= optind; 79 80 if (argc) 81 usage(); 82 83 if (count == -1) 84 count = 1; 85 86 store = (uuid_t*)malloc(sizeof(uuid_t) * count); 87 if (store == NULL) 88 err(1, "malloc()"); 89 90 if (!iterate) { 91 /* Get them all in a single batch */ 92 if (uuidgen(store, count) != 0) 93 err(1, "uuidgen()"); 94 } else { 95 uuid = store; 96 for (i = 0; i < count; i++) { 97 if (uuidgen(uuid++, 1) != 0) 98 err(1, "uuidgen()"); 99 } 100 } 101 102 uuid = store; 103 while (count--) { 104 uuid_to_string(uuid++, &p, NULL); 105 fprintf(fp, "%s\n", p); 106 free(p); 107 } 108 109 free(store); 110 if (fp != stdout) 111 fclose(fp); 112 return (0); 113 } 114