1 /* $OpenBSD: keynote-sigver.c,v 1.11 2001/03/08 21:50:12 angelos 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 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 #if HAVE_CONFIG_H 23 #include "config.h" 24 #endif /* HAVE_CONFIG_H */ 25 26 #include <sys/types.h> 27 #include <sys/stat.h> 28 #include <stdlib.h> 29 #include <stdio.h> 30 #include <ctype.h> 31 32 #if STDC_HEADERS 33 #include <string.h> 34 #endif /* STDC_HEADERS */ 35 36 #if HAVE_FCNTL_H 37 #include <fcntl.h> 38 #endif /* HAVE_FCNTL_H */ 39 40 #if HAVE_IO_H 41 #include <io.h> 42 #elif HAVE_UNISTD_H 43 #include <unistd.h> 44 #endif /* HAVE_IO_H */ 45 46 #include "header.h" 47 #include "keynote.h" 48 49 void 50 sigverusage(void) 51 { 52 fprintf(stderr, "Arguments:\n"); 53 fprintf(stderr, "\t<AssertionFile>\n"); 54 } 55 56 void 57 keynote_sigver(int argc, char *argv[]) 58 { 59 char *buf, **assertlist; 60 int fd, i, n, j; 61 struct stat sb; 62 63 if (argc != 2) 64 { 65 sigverusage(); 66 exit(0); 67 } 68 69 /* Open and read assertion file */ 70 fd = open(argv[1], O_RDONLY, 0); 71 if (fd < 0) 72 { 73 perror(argv[1]); 74 exit(1); 75 } 76 77 if (fstat(fd, &sb) < 0) 78 { 79 perror("fstat()"); 80 exit(1); 81 } 82 83 if (sb.st_size == 0) /* Paranoid */ 84 { 85 fprintf(stderr, "Illegal assertion-file size 0\n"); 86 exit(1); 87 } 88 89 buf = (char *) calloc(sb.st_size + 1, sizeof(char)); 90 if (buf == (char *) NULL) 91 { 92 perror("calloc()"); 93 exit(1); 94 } 95 96 if (read(fd, buf, sb.st_size) < 0) 97 { 98 perror("read()"); 99 exit(1); 100 } 101 102 close(fd); 103 104 assertlist = kn_read_asserts(buf, sb.st_size, &n); 105 if (assertlist == NULL) 106 { 107 fprintf(stderr, "Out of memory while allocating memory for " 108 "assertions.\n"); 109 exit(1); 110 } 111 112 if (n == 0) 113 { 114 fprintf(stderr, "No assertions found in %s.\n", argv[1]); 115 free(assertlist); 116 exit(1); 117 } 118 119 free(buf); 120 121 for (j = 0; j < n; j++) 122 { 123 i = kn_verify_assertion(assertlist[j], strlen(assertlist[j])); 124 if (i == -1) 125 { 126 switch (keynote_errno) 127 { 128 case ERROR_MEMORY: 129 fprintf(stderr, 130 "Out of memory while parsing assertion %d.\n", j); 131 break; 132 133 case ERROR_SYNTAX: 134 fprintf(stderr, 135 "Syntax error while parsing assertion %d.\n", j); 136 break; 137 138 default: 139 fprintf(stderr, 140 "Unknown error while parsing assertion %d.\n", j); 141 } 142 } 143 else 144 { 145 if (i == SIGRESULT_TRUE) 146 fprintf(stdout, "Signature on assertion %d verified.\n", j); 147 else 148 { 149 if (keynote_errno != 0) 150 fprintf(stdout, 151 "Signature on assertion %d could not be verified " 152 "(keynote_errno = %d).\n", j, keynote_errno); 153 else 154 fprintf(stdout, 155 "Signature on assertion %d did not verify!\n", j); 156 } 157 } 158 159 free(assertlist[j]); 160 } 161 162 free(assertlist); 163 164 exit(0); 165 } 166