Files
GmSSL/tools/certparse.c
2023-01-31 15:57:53 +08:00

98 lines
2.3 KiB
C

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