mirror of
https://github.com/guanzhi/GmSSL.git
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88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/*
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* Copyright 2022 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 <sys/stat.h>
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#include <gmssl/cms.h>
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#include <gmssl/x509.h>
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#include <gmssl/rand.h>
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static const char *options = "-in file";
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int cmsparse_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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FILE *infp = stdin;
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struct stat st;
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uint8_t *cms = NULL;
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size_t cms_maxlen, cmslen;
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argc--;
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argv++;
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if (argc < 1) {
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fprintf(stderr, "usage: %s %s\n", prog, options);
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return 1;
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}
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while (argc > 1) {
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if (!strcmp(*argv, "-help")) {
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printf("usage: %s %s\n", prog, options);
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ret = 0;
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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, "r"))) {
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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 {
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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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if (!infile) {
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fprintf(stderr, "%s: option '-in' required'\n", prog);
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goto end;
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}
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if (fstat(fileno(infp), &st) < 0) {
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fprintf(stderr, "%s: access '%s' failed : %s\n", prog, infile, strerror(errno));
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goto end;
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}
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cms_maxlen = (st.st_size * 3)/4 + 1;
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if (!(cms = malloc(cms_maxlen))) {
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fprintf(stderr, "%s: malloc failure\n", prog);
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goto end;
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}
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if (cms_from_pem(cms, &cmslen, cms_maxlen, infp) != 1) {
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fprintf(stderr, "%s: parse CMS error\n", prog);
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goto end;
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}
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cms_print(stdout, 0, 0, "CMS", cms, cmslen);
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ret = 0;
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end:
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if (infp) fclose(infp);
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if (cms) free(cms);
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return ret;
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}
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