mirror of https://gerrit.osmocom.org/asn1c
135 lines
4.6 KiB
C
135 lines
4.6 KiB
C
/*
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* Copyright (c) 2004, 2005, 2006 Lev Walkin <vlm@lionet.info>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "asn1_common.h"
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#include "libasn1_unber_tool.h"
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#undef COPYRIGHT
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#define COPYRIGHT "Copyright (c) 2004-2019 Lev Walkin <vlm@lionet.info>\n"
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static void usage(const char *av0); /* Print the Usage screen and exit */
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int
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main(int ac, char **av) {
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int ch; /* Command line character */
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/*
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* Process command-line options.
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*/
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while((ch = getopt(ac, av, "1hi:mps:t:v")) != -1) {
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switch(ch) {
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case '1':
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set_single_type_decoding(1);
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break;
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case 'i':
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if(set_indent_size(atoi(optarg)) != 0) {
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fprintf(stderr, "-i %s: Invalid indent value\n", optarg);
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exit(EX_USAGE);
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}
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break;
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case 'm':
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set_minimalistic_output(1);
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break;
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case 'p':
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set_pretty_printing(0);
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break;
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case 's':
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if(set_skip_bytes(atol(optarg)) != 0) {
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fprintf(stderr, "-s %s: positive value expected\n", optarg);
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exit(EX_USAGE);
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}
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break;
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case 't':
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if(decode_tlv_from_hex_string(optarg)) exit(EX_DATAERR);
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exit(0);
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case 'v':
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fprintf(stderr, "ASN.1 BER Decoder, v" VERSION "\n" COPYRIGHT);
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exit(0);
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break;
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case 'h':
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default:
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usage(av[0]);
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}
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}
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/*
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* Ensure that there are some input files present.
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*/
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if(ac > optind) {
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ac -= optind;
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av += optind;
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} else {
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fprintf(stderr, "%s: No input files specified\n", av[0]);
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exit(1);
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}
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setvbuf(stdout, 0, _IOLBF, 0);
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/*
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* Iterate over input files and parse each.
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* All syntax trees from all files will be bundled together.
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*/
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for(int i = 0; i < ac; i++) {
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if(unber_file(av[i])) exit(EX_DATAERR);
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}
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return 0;
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}
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/*
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* Print the usage screen and exit(EX_USAGE).
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*/
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static void
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usage(const char *av0) {
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/* clang-format off */
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fprintf(stderr,
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"ASN.1 BER Decoder, v" VERSION "\n" COPYRIGHT
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"Usage: %s [options] [-] [file ...]\n"
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"Options:\n"
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" -1 Decode only the first BER structure (otherwise, until EOF)\n"
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" -i <indent> Amount of spaces for output indentation (default is 4)\n"
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" -m Minimalistic mode: print as little as possible\n"
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" -p Do not attempt pretty-printing of known ASN.1 types\n"
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" -s <skip> Ignore first <skip> bytes of input\n"
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" -t <hex-string> Decode the given tag[/length] sequence (e.g. -t \"bf20\")\n"
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"\n"
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"The XML opening tag format is as follows:\n"
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" <tform O=\"off\" T=\"tag\" TL=\"tl_len\" V=\"{Indefinite|v_len}\" [A=\"type\"] [F]>\n"
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"Where:\n"
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" tform Which form the value is in: constructed (\"C\", \"I\") or primitive (\"P\")\n"
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" off Offset of the encoded element in the unber input stream\n"
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" tag The tag class and value in human readable form\n"
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" tl_len The length of the TL (BER Tag and Length) encoding\n"
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" v_len The length of the value (V, encoded by the L), may be \"Indefinite\"\n"
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" type Likely name of the underlying ASN.1 type (for [UNIVERSAL n] tags)\n"
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" [F] Indicates that the value was reformatted (pretty-printed)\n"
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"See the manual page for details\n"
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, av0);
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/* clang-format on */
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exit(EX_USAGE);
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}
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