#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "apps.h"
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/pem.h>
#include <openssl/pkcs7.h>
#include <openssl/x509.h>
static struct {
char *infile;
int informat;
int noout;
char *outfile;
int outformat;
int p7_print;
int print_certs;
int text;
} cfg;
static const struct option pkcs7_options[] = {
{
.name = "in",
.argname = "file",
.desc = "Input file (default stdin)",
.type = OPTION_ARG,
.opt.arg = &cfg.infile,
},
{
.name = "inform",
.argname = "format",
.desc = "Input format (DER or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.informat,
},
{
.name = "noout",
.desc = "Do not output encoded version of PKCS#7 structure",
.type = OPTION_FLAG,
.opt.flag = &cfg.noout,
},
{
.name = "out",
.argname = "file",
.desc = "Output file (default stdout)",
.type = OPTION_ARG,
.opt.arg = &cfg.outfile,
},
{
.name = "outform",
.argname = "format",
.desc = "Output format (DER or PEM (default))",
.type = OPTION_ARG_FORMAT,
.opt.value = &cfg.outformat,
},
{
.name = "print",
.desc = "Output ASN.1 representation of PKCS#7 structure",
.type = OPTION_FLAG,
.opt.flag = &cfg.p7_print,
},
{
.name = "print_certs",
.desc = "Print out any certificates or CRLs contained in file",
.type = OPTION_FLAG,
.opt.flag = &cfg.print_certs,
},
{
.name = "text",
.desc = "Print out full certificate details",
.type = OPTION_FLAG,
.opt.flag = &cfg.text,
},
{ NULL },
};
static void
pkcs7_usage(void)
{
fprintf(stderr, "usage: pkcs7 [-in file] "
"[-inform DER | PEM] [-noout]\n"
" [-out file] [-outform DER | PEM] [-print_certs] [-text]\n\n");
options_usage(pkcs7_options);
}
int
pkcs7_main(int argc, char **argv)
{
PKCS7 *p7 = NULL;
BIO *in = NULL, *out = NULL;
int ret = 1;
int i;
if (pledge("stdio cpath wpath rpath", NULL) == -1) {
perror("pledge");
exit(1);
}
memset(&cfg, 0, sizeof(cfg));
cfg.informat = FORMAT_PEM;
cfg.outformat = FORMAT_PEM;
if (options_parse(argc, argv, pkcs7_options, NULL, NULL) != 0) {
pkcs7_usage();
goto end;
}
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if ((in == NULL) || (out == NULL)) {
ERR_print_errors(bio_err);
goto end;
}
if (cfg.infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, cfg.infile) <= 0) {
perror(cfg.infile);
goto end;
}
}
if (cfg.informat == FORMAT_ASN1)
p7 = d2i_PKCS7_bio(in, NULL);
else if (cfg.informat == FORMAT_PEM)
p7 = PEM_read_bio_PKCS7(in, NULL, NULL, NULL);
else {
BIO_printf(bio_err, "bad input format specified for pkcs7 object\n");
goto end;
}
if (p7 == NULL) {
BIO_printf(bio_err, "unable to load PKCS7 object\n");
ERR_print_errors(bio_err);
goto end;
}
if (cfg.outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, cfg.outfile) <= 0) {
perror(cfg.outfile);
goto end;
}
}
if (cfg.p7_print)
PKCS7_print_ctx(out, p7, 0, NULL);
if (cfg.print_certs) {
STACK_OF(X509) * certs = NULL;
STACK_OF(X509_CRL) * crls = NULL;
i = OBJ_obj2nid(p7->type);
switch (i) {
case NID_pkcs7_signed:
if (p7->d.sign != NULL) {
certs = p7->d.sign->cert;
crls = p7->d.sign->crl;
}
break;
case NID_pkcs7_signedAndEnveloped:
if (p7->d.signed_and_enveloped != NULL) {
certs = p7->d.signed_and_enveloped->cert;
crls = p7->d.signed_and_enveloped->crl;
}
break;
default:
break;
}
if (certs != NULL) {
X509 *x;
for (i = 0; i < sk_X509_num(certs); i++) {
x = sk_X509_value(certs, i);
if (cfg.text)
X509_print(out, x);
else
dump_cert_text(out, x);
if (!cfg.noout)
PEM_write_bio_X509(out, x);
BIO_puts(out, "\n");
}
}
if (crls != NULL) {
X509_CRL *crl;
for (i = 0; i < sk_X509_CRL_num(crls); i++) {
crl = sk_X509_CRL_value(crls, i);
X509_CRL_print(out, crl);
if (!cfg.noout)
PEM_write_bio_X509_CRL(out, crl);
BIO_puts(out, "\n");
}
}
ret = 0;
goto end;
}
if (!cfg.noout) {
if (cfg.outformat == FORMAT_ASN1)
i = i2d_PKCS7_bio(out, p7);
else if (cfg.outformat == FORMAT_PEM)
i = PEM_write_bio_PKCS7(out, p7);
else {
BIO_printf(bio_err, "bad output format specified for outfile\n");
goto end;
}
if (!i) {
BIO_printf(bio_err, "unable to write pkcs7 object\n");
ERR_print_errors(bio_err);
goto end;
}
}
ret = 0;
end:
if (p7 != NULL)
PKCS7_free(p7);
if (in != NULL)
BIO_free(in);
if (out != NULL)
BIO_free_all(out);
return (ret);
}
