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