1 /* $OpenBSD: keynote-sigver.c,v 1.15 2004/06/29 11:35:56 msf Exp $ */ 2 /* 3 * The author of this code is Angelos D. Keromytis (angelos@dsl.cis.upenn.edu) 4 * 5 * This code was written by Angelos D. Keromytis in Philadelphia, PA, USA, 6 * in April-May 1998 7 * 8 * Copyright (C) 1998, 1999 by Angelos D. Keromytis. 9 * 10 * Permission to use, copy, and modify this software with or without fee 11 * is hereby granted, provided that this entire notice is included in 12 * all copies of any software which is or includes a copy or 13 * modification of this software. 14 * 15 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR 16 * IMPLIED WARRANTY. IN PARTICULAR, THE AUTHORS MAKES NO 17 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE 18 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR 19 * PURPOSE. 20 */ 21 22 #include <sys/types.h> 23 #include <sys/stat.h> 24 25 #include <ctype.h> 26 #include <fcntl.h> 27 #include <regex.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <string.h> 31 #include <unistd.h> 32 33 #include "header.h" 34 #include "keynote.h" 35 36 void sigverusage(void); 37 38 void 39 sigverusage(void) 40 { 41 fprintf(stderr, "Arguments:\n"); 42 fprintf(stderr, "\t<AssertionFile>\n"); 43 } 44 45 void 46 keynote_sigver(int argc, char *argv[]) 47 { 48 char *buf, **assertlist; 49 int fd, i, n, j; 50 struct stat sb; 51 52 if (argc != 2) 53 { 54 sigverusage(); 55 exit(0); 56 } 57 58 /* Open and read assertion file */ 59 fd = open(argv[1], O_RDONLY, 0); 60 if (fd < 0) 61 { 62 perror(argv[1]); 63 exit(1); 64 } 65 66 if (fstat(fd, &sb) < 0) 67 { 68 perror("fstat()"); 69 exit(1); 70 } 71 72 if (sb.st_size == 0) /* Paranoid */ 73 { 74 fprintf(stderr, "Illegal assertion-file size 0\n"); 75 exit(1); 76 } 77 78 buf = (char *) calloc(sb.st_size + 1, sizeof(char)); 79 if (buf == (char *) NULL) 80 { 81 perror("calloc()"); 82 exit(1); 83 } 84 85 if (read(fd, buf, sb.st_size) < 0) 86 { 87 perror("read()"); 88 exit(1); 89 } 90 91 close(fd); 92 93 assertlist = kn_read_asserts(buf, sb.st_size, &n); 94 if (assertlist == NULL) 95 { 96 fprintf(stderr, "Out of memory while allocating memory for " 97 "assertions.\n"); 98 exit(1); 99 } 100 101 if (n == 0) 102 { 103 fprintf(stderr, "No assertions found in %s.\n", argv[1]); 104 free(assertlist); 105 exit(1); 106 } 107 108 free(buf); 109 110 for (j = 0; j < n; j++) 111 { 112 i = kn_verify_assertion(assertlist[j], strlen(assertlist[j])); 113 if (i == -1) 114 { 115 switch (keynote_errno) 116 { 117 case ERROR_MEMORY: 118 fprintf(stderr, 119 "Out of memory while parsing assertion %d.\n", j); 120 break; 121 122 case ERROR_SYNTAX: 123 fprintf(stderr, 124 "Syntax error while parsing assertion %d.\n", j); 125 break; 126 127 default: 128 fprintf(stderr, 129 "Unknown error while parsing assertion %d.\n", j); 130 } 131 } 132 else 133 { 134 if (i == SIGRESULT_TRUE) 135 fprintf(stdout, "Signature on assertion %d verified.\n", j); 136 else 137 { 138 if (keynote_errno != 0) 139 fprintf(stdout, 140 "Signature on assertion %d could not be verified " 141 "(keynote_errno = %d).\n", j, keynote_errno); 142 else 143 fprintf(stdout, 144 "Signature on assertion %d did not verify!\n", j); 145 } 146 } 147 148 free(assertlist[j]); 149 } 150 151 free(assertlist); 152 153 exit(0); 154 } 155