1 /*
2 * Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the License); you may
5 * not use this file except in compliance with the License.
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 */
9
10
11 #include <stdio.h>
12 #include <errno.h>
13 #include <string.h>
14 #include <stdlib.h>
15 #include <sys/stat.h>
16 #include <gmssl/x509.h>
17 #include <gmssl/x509_crl.h>
18
19
20 static const char *options = "-in file [-out file]";
21
crlparse_main(int argc,char ** argv)22 int crlparse_main(int argc, char **argv)
23 {
24 int ret = 1;
25 char *prog = argv[0];
26 char *infile = NULL;
27 char *outfile = NULL;
28 FILE *infp = stdin;
29 FILE *outfp = stdout;
30 struct stat st;
31 uint8_t *in = NULL;
32 size_t inlen;
33 const uint8_t *pin;
34 const uint8_t *crl = NULL;
35 size_t crllen;
36
37 argc--;
38 argv++;
39
40 if (argc < 1) {
41 fprintf(stderr, "usage: %s %s\n", prog, options);
42 return 1;
43 }
44
45 while (argc > 0) {
46 if (!strcmp(*argv, "-help")) {
47 printf("usage: %s %s\n", prog, options);
48 goto end;
49 } else if (!strcmp(*argv, "-in")) {
50 if (--argc < 1) goto bad;
51 infile = *(++argv);
52 if (!(infp = fopen(infile, "r"))) {
53 fprintf(stderr, "%s: open '%s' failure : %s\n", prog, infile, strerror(errno));
54 goto end;
55 }
56 } else if (!strcmp(*argv, "-out")) {
57 if (--argc < 1) goto bad;
58 outfile = *(++argv);
59 if (!(outfp = fopen(outfile, "w"))) {
60 fprintf(stderr, "%s: open '%s' failure : %s\n", prog, outfile, strerror(errno));
61 goto end;
62 }
63 } else {
64 fprintf(stderr, "%s: illegal option '%s'\n", prog, *argv);
65 goto end;
66 bad:
67 fprintf(stderr, "%s: '%s' option value missing\n", prog, *argv);
68 goto end;
69 }
70
71 argc--;
72 argv++;
73 }
74
75 if (!infile) {
76 fprintf(stderr, "%s: '-in' option required\n", prog);
77 goto end;
78 }
79 if (fstat(fileno(infp), &st) < 0) {
80 fprintf(stderr, "%s: access file error : %s\n", prog, strerror(errno));
81 goto end;
82 }
83 if ((inlen = st.st_size) <= 0) {
84 fprintf(stderr, "%s: invalid input length\n", prog);
85 goto end;
86 }
87 if (!(in = malloc(inlen))) {
88 fprintf(stderr, "%s: malloc failure\n", prog);
89 goto end;
90 }
91 if (fread(in, 1, inlen, infp) != inlen) {
92 fprintf(stderr, "%s: read file error : %s\n", prog, strerror(errno));
93 goto end;
94 }
95 pin = in;
96 if (x509_crl_from_der(&crl, &crllen, &pin, &inlen) != 1
97 || asn1_length_is_zero(inlen) != 1) {
98 fprintf(stderr, "%s: read CRL failure\n", prog);
99 goto end;
100 }
101 x509_crl_print(outfp, 0, 0, "CRL", crl, crllen);
102
103 end:
104 if (infile && infp) fclose(infp);
105 if (outfile && outfp) fclose(outfp);
106 if (in) free(in);
107 return ret;
108 }
109