mirror of
https://github.com/guanzhi/GmSSL.git
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98 lines
2.3 KiB
C
98 lines
2.3 KiB
C
/*
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* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <stdlib.h>
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#include <gmssl/pem.h>
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#include <gmssl/x509.h>
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static const char *options = "[-in pem] [-out file]";
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static char *usage =
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"Options\n"
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"\n"
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" [-in pem]|stdin Input certificates in PEM format.\n"
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" This command supports continuous multiple certificates\n"
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" Do not include blank line or comments between PEM data\n"
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" [-out file]stdout Output file\n"
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"\n"
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"Examples\n"
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"\n"
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" gmssl certparse -in certs.pem\n"
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"\n";
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int certparse_main(int argc, char **argv)
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{
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int ret = 1;
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char *prog = argv[0];
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char *infile = NULL;
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char *outfile = NULL;
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FILE *infp = stdin;
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FILE *outfp = stdout;
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uint8_t cert[18192];
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size_t certlen;
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argc--;
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argv++;
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while (argc > 0) {
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if (!strcmp(*argv, "-help")) {
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printf("usage: gmssl %s %s\n\n", prog, options);
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printf("%s\n", usage);
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goto end;
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} else if (!strcmp(*argv, "-in")) {
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if (--argc < 1) goto bad;
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infile = *(++argv);
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if (!(infp = fopen(infile, "rb"))) {
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fprintf(stderr, "%s: open '%s' failure : %s\n", prog, infile, strerror(errno));
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goto end;
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}
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} else if (!strcmp(*argv, "-out")) {
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if (--argc < 1) goto bad;
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outfile = *(++argv);
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if (!(outfp = fopen(outfile, "wb"))) {
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fprintf(stderr, "%s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
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goto end;
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}
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} else {
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fprintf(stderr, "%s: illegal option `%s`\n", prog, *argv);
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goto end;
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bad:
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fprintf(stderr, "%s: `%s` option value missing\n", prog, *argv);
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goto end;
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}
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argc--;
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argv++;
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}
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for (;;) {
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int rv;
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if ((rv = x509_cert_from_pem(cert, &certlen, sizeof(cert), infp)) != 1) {
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if (rv < 0) fprintf(stderr, "%s: read certificate failure\n", prog);
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else ret = 0;
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goto end;
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}
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x509_cert_print(outfp, 0, 0, "Certificate", cert, certlen);
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if (x509_cert_to_pem(cert, certlen, outfp) != 1) {
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fprintf(stderr, "%s: output certficate failure\n", prog);
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goto end;
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}
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}
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end:
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if (infile && infp) fclose(infp);
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if (outfile && outfp) fclose(outfp);
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return ret;
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}
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