1 /* $NetBSD: asn1_gen.c,v 1.2 2017/01/28 21:31:45 christos Exp $ */
2
3 /*
4 * Copyright (c) 2005 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36 #include "der_locl.h"
37 #include <krb5/com_err.h>
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <ctype.h>
41 #include <krb5/getarg.h>
42 #include <krb5/hex.h>
43 #include <err.h>
44
45 __RCSID("$NetBSD: asn1_gen.c,v 1.2 2017/01/28 21:31:45 christos Exp $");
46
47 static int
doit(const char * fn)48 doit(const char *fn)
49 {
50 char buf[2048];
51 char *fnout = NULL;
52 const char *bname;
53 unsigned long line = 0;
54 FILE *f, *fout;
55 size_t offset = 0;
56
57 f = fopen(fn, "r");
58 if (f == NULL)
59 err(1, "fopen");
60
61 bname = strrchr(fn, '/');
62 if (bname)
63 bname++;
64 else
65 bname = fn;
66
67 if (asprintf(&fnout, "%s.out", bname) < 0 || fnout == NULL)
68 errx(1, "malloc");
69
70 fout = fopen(fnout, "w");
71 if (fout == NULL)
72 err(1, "fopen: output file");
73
74 while (fgets(buf, sizeof(buf), f) != NULL) {
75 char *ptr, *class, *type, *tag, *length, *data, *foo;
76 int ret, l, c, ty, ta;
77 unsigned char p[6], *pdata;
78 size_t sz;
79
80 line++;
81
82 buf[strcspn(buf, "\r\n")] = '\0';
83 if (buf[0] == '#' || buf[0] == '\0')
84 continue;
85
86 ptr = buf;
87 while (isspace((unsigned char)*ptr))
88 ptr++;
89
90 class = strtok_r(ptr, " \t\n", &foo);
91 if (class == NULL) errx(1, "class missing on line %lu", line);
92 type = strtok_r(NULL, " \t\n", &foo);
93 if (type == NULL) errx(1, "type missing on line %lu", line);
94 tag = strtok_r(NULL, " \t\n", &foo);
95 if (tag == NULL) errx(1, "tag missing on line %lu", line);
96 length = strtok_r(NULL, " \t\n", &foo);
97 if (length == NULL) errx(1, "length missing on line %lu", line);
98 data = strtok_r(NULL, " \t\n", &foo);
99
100 c = der_get_class_num(class);
101 if (c == -1) errx(1, "no valid class on line %lu", line);
102 ty = der_get_type_num(type);
103 if (ty == -1) errx(1, "no valid type on line %lu", line);
104 ta = der_get_tag_num(tag);
105 if (ta == -1)
106 ta = atoi(tag);
107
108 l = atoi(length);
109
110 printf("line: %3lu offset: %3lu class: %d type: %d "
111 "tag: %3d length: %3d %s\n",
112 line, (unsigned long)offset, c, ty, ta, l,
113 data ? "<have data>" : "<no data>");
114
115 ret = der_put_length_and_tag(p + sizeof(p) - 1, sizeof(p),
116 l,
117 c,
118 ty,
119 ta,
120 &sz);
121 if (ret)
122 errx(1, "der_put_length_and_tag: %d", ret);
123
124 if (fwrite(p + sizeof(p) - sz , sz, 1, fout) != 1)
125 err(1, "fwrite length/tag failed");
126 offset += sz;
127
128 if (data) {
129 size_t datalen;
130
131 datalen = strlen(data) / 2;
132 pdata = emalloc(sz);
133
134 if (hex_decode(data, pdata, datalen) != datalen)
135 errx(1, "failed to decode data");
136
137 if (fwrite(pdata, datalen, 1, fout) != 1)
138 err(1, "fwrite data failed");
139 offset += datalen;
140
141 free(pdata);
142 }
143 }
144 printf("line: eof offset: %lu\n", (unsigned long)offset);
145
146 fclose(fout);
147 fclose(f);
148 return 0;
149 }
150
151
152 static int version_flag;
153 static int help_flag;
154 struct getargs args[] = {
155 { "version", 0, arg_flag, &version_flag, NULL, NULL },
156 { "help", 0, arg_flag, &help_flag, NULL, NULL }
157 };
158 int num_args = sizeof(args) / sizeof(args[0]);
159
160 static void
usage(int code)161 usage(int code)
162 {
163 arg_printusage(args, num_args, NULL, "parse-file");
164 exit(code);
165 }
166
167 int
main(int argc,char ** argv)168 main(int argc, char **argv)
169 {
170 int optidx = 0;
171
172 setprogname (argv[0]);
173
174 if(getarg(args, num_args, argc, argv, &optidx))
175 usage(1);
176 if(help_flag)
177 usage(0);
178 if(version_flag) {
179 print_version(NULL);
180 exit(0);
181 }
182 argv += optidx;
183 argc -= optidx;
184 if (argc != 1)
185 usage (1);
186
187 return doit (argv[0]);
188 }
189