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/*-
* Copyright 1998 Juniper Networks, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <security/pam_appl.h>
#include <security/pam_mod_misc.h>
/* Everyone has to have these options. It is not an error to
* specify them and then not use them.
*/
struct opttab std_options[PAM_MAX_OPTIONS] = {
{ "debug", PAM_OPT_DEBUG },
{ "no_warn", PAM_OPT_NO_WARN },
{ "echo_pass", PAM_OPT_ECHO_PASS },
{ "use_first_pass", PAM_OPT_USE_FIRST_PASS },
{ "try_first_pass", PAM_OPT_TRY_FIRST_PASS },
{ "use_mapped_pass", PAM_OPT_USE_MAPPED_PASS },
{ "try_mapped_pass", PAM_OPT_TRY_MAPPED_PASS },
{ "expose_account", PAM_OPT_EXPOSE_ACCOUNT },
{ NULL, 0 }
};
/* Populate the options structure, syslogging all errors */
void
pam_std_option(struct options *options, struct opttab other_options[],
int argc, const char *argv[])
{
struct opttab *oo;
int i, j, std, extra, arglen, found;
std = 1;
extra = 1;
oo = other_options;
for (i = 0; i < PAM_MAX_OPTIONS; i++) {
if (std && std_options[i].name == NULL)
std = 0;
else if (extra && (oo == NULL || oo->name == NULL))
extra = 0;
if (std)
options->opt[i].name = std_options[i].name;
else if (extra) {
if (oo->value != i)
syslog(LOG_DEBUG, "Extra option fault: %d %d",
oo->value, i);
options->opt[i].name = oo->name;
oo++;
}
else
options->opt[i].name = NULL;
options->opt[i].bool = 0;
options->opt[i].arg = NULL;
}
for (j = 0; j < argc; j++) {
#ifdef DEBUG
syslog(LOG_DEBUG, "Doing arg %s", argv[j]);
#endif
found = 0;
for (i = 0; i < PAM_MAX_OPTIONS; i++) {
if (options->opt[i].name == NULL)
break;
arglen = strlen(options->opt[i].name);
if (strcmp(argv[j], options->opt[i].name) == 0) {
options->opt[i].bool = 1;
found = 1;
break;
}
else if (strncmp(argv[j], options->opt[i].name, arglen)
== 0 && argv[j][arglen] == '=') {
options->opt[i].bool = 1;
options->opt[i].arg
= strdup(&argv[j][arglen + 1]);
found = 1;
break;
}
}
if (!found)
syslog(LOG_WARNING, "PAM option: %s invalid", argv[j]);
}
}
/* Test if option is set in options */
int
pam_test_option(struct options *options, enum opt option, char **arg)
{
if (arg != NULL)
*arg = options->opt[option].arg;
return options->opt[option].bool;
}
/* Set option in options, errors to syslog */
void
pam_set_option(struct options *options, enum opt option)
{
if (option < PAM_OPT_STD_MAX)
options->opt[option].bool = 1;
#ifdef DEBUG
else
syslog(LOG_DEBUG, "PAM options: attempt to set option %d",
option);
#endif
}
/* Clear option in options, errors to syslog */
void
pam_clear_option(struct options *options, enum opt option)
{
if (option < PAM_OPT_STD_MAX)
options->opt[option].bool = 0;
#ifdef DEBUG
else
syslog(LOG_DEBUG, "PAM options: attempt to clear option %d",
option);
#endif
}
#ifdef DEBUG1
enum { PAM_OPT_FOO=PAM_OPT_STD_MAX, PAM_OPT_BAR, PAM_OPT_BAZ, PAM_OPT_QUX };
struct opttab other_options[] = {
{ "foo", PAM_OPT_FOO },
{ "bar", PAM_OPT_BAR },
{ "baz", PAM_OPT_BAZ },
{ "qux", PAM_OPT_QUX },
{ NULL, 0 }
};
int
main(int argc, const char *argv[])
{
struct options options;
int i, opt;
char *arg;
pam_std_option(&options, other_options, argc, argv);
for (i = 0; i < PAM_MAX_OPTIONS; i++) {
opt = pam_test_option(&options, i, &arg);
if (opt) {
if (arg == NULL)
printf("%d []\n", i);
else
printf("%d [%s]\n", i, arg);
}
}
return 0;
}
#endif
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