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/* pam_static.c -- static module loading helper functions */
/* created by Michael K. Johnson, johnsonm@redhat.com
*
* $Id: pam_static.c 274 2005-07-13 09:52:25Z vorlon $
*/
/* This whole file is only used for PAM_STATIC */
#ifdef PAM_STATIC
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "pam_private.h"
/*
* Need to include pointers to static modules; this was built by each
* of the modules that register...
*/
#include "../modules/_static_module_list"
/*
* and here is a structure that connects libpam to the above static
* modules
*/
static struct pam_module *static_modules[] = {
#include "../modules/_static_module_entry"
NULL
};
/*
* and now for the functions
*/
/* Return pointer to data structure used to define a static module */
struct pam_module * _pam_open_static_handler(const char *path)
{
int i;
const char *clpath = path;
char *lpath, *end;
if (strchr(clpath, '/')) {
/* ignore path and leading "/" */
clpath = strrchr(lpath, '/') + 1;
}
/* create copy to muck with (must free before return) */
lpath = _pam_strdup(clpath);
/* chop .so off copy if it exists (or other extension on other
platform...) */
end = strstr(lpath, ".so");
if (end) {
*end = '\0';
}
/* now go find the module */
for (i = 0; static_modules[i] != NULL; i++) {
D(("%s=?%s\n", lpath, static_modules[i]->name));
if (static_modules[i]->name &&
! strcmp(static_modules[i]->name, lpath)) {
break;
}
}
if (static_modules[i] == NULL) {
_pam_system_log(NULL, NULL, LOG_ERR, "no static module named %s",
lpath);
}
free(lpath);
return (static_modules[i]);
}
/* Return pointer to function requested from static module
* Can't just return void *, because ANSI C disallows casting a
* pointer to a function to a void *...
* This definition means:
* _pam_get_static_sym is a function taking two arguments and
* returning a pointer to a function which takes no arguments
* and returns void... */
voidfunc *_pam_get_static_sym(struct pam_module *mod, const char *symname) {
if (! strcmp(symname, "pam_sm_authenticate")) {
return ((voidfunc *)mod->pam_sm_authenticate);
} else if (! strcmp(symname, "pam_sm_setcred")) {
return ((voidfunc *)mod->pam_sm_setcred);
} else if (! strcmp(symname, "pam_sm_acct_mgmt")) {
return ((voidfunc *)mod->pam_sm_acct_mgmt);
} else if (! strcmp(symname, "pam_sm_open_session")) {
return ((voidfunc *)mod->pam_sm_open_session);
} else if (! strcmp(symname, "pam_sm_close_session")) {
return ((voidfunc *)mod->pam_sm_close_session);
} else if (! strcmp(symname, "pam_sm_chauthtok")) {
return ((voidfunc *)mod->pam_sm_chauthtok);
}
/* getting to this point is an error */
return ((voidfunc *)NULL);
}
#endif /* PAM_STATIC */
/*
* Copyright (C) 1995 by Red Hat Software, Michael K. Johnson
* 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, and the entire permission notice in its entirety,
* including the disclaimer of warranties.
* 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.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* ALTERNATIVELY, this product may be distributed under the terms of
* the GNU Public License, in which case the provisions of the GPL are
* required INSTEAD OF the above restrictions. (This clause is
* necessary due to a potential bad interaction between the GPL and
* the restrictions contained in a BSD-style copyright.)
*
* THIS SOFTWARE IS PROVIDED ``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 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.
*/
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