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usr / src / contrib / openpam / lib / libpam /

📁 ..
📄 Makefile.am(2.07 KB)
📄 Makefile.in(34.58 KB)
📄 openpam_asprintf.c(1.99 KB)
📄 openpam_asprintf.h(1.78 KB)
📄 openpam_borrow_cred.c(3.8 KB)
📄 openpam_check_owner_perms.c(3.94 KB)
📄 openpam_configure.c(12.26 KB)
📄 openpam_constants.c(7.07 KB)
📄 openpam_constants.h(2.09 KB)
📄 openpam_cred.h(2.12 KB)
📄 openpam_ctype.h(3.15 KB)
📄 openpam_debug.h(3.87 KB)
📄 openpam_dispatch.c(6.77 KB)
📄 openpam_dlfunc.h(1.79 KB)
📄 openpam_dynamic.c(6.91 KB)
📄 openpam_features.c(2.42 KB)
📄 openpam_features.h(1.87 KB)
📄 openpam_findenv.c(2.37 KB)
📄 openpam_free_data.c(2.43 KB)
📄 openpam_free_envlist.c(2.16 KB)
📄 openpam_get_feature.c(3.03 KB)
📄 openpam_get_option.c(2.85 KB)
📄 openpam_impl.h(4.28 KB)
📄 openpam_load.c(3.6 KB)
📄 openpam_log.c(4.57 KB)
📄 openpam_nullconv.c(2.93 KB)
📄 openpam_readline.c(3.8 KB)
📄 openpam_readlinev.c(4.99 KB)
📄 openpam_readword.c(6.58 KB)
📄 openpam_restore_cred.c(2.93 KB)
📄 openpam_set_feature.c(2.28 KB)
📄 openpam_set_option.c(3.51 KB)
📄 openpam_static.c(2.39 KB)
📄 openpam_straddch.c(3.75 KB)
📄 openpam_strlcat.c(2 KB)
📄 openpam_strlcat.h(1.78 KB)
📄 openpam_strlcmp.h(1.93 KB)
📄 openpam_strlcpy.c(1.95 KB)
📄 openpam_strlcpy.h(1.78 KB)
📄 openpam_strlset.c(2.01 KB)
📄 openpam_strlset.h(1.77 KB)
📄 openpam_subst.c(4.56 KB)
📄 openpam_ttyconv.c(9.95 KB)
📄 openpam_vasprintf.c(2.14 KB)
📄 openpam_vasprintf.h(1.79 KB)
📄 pam_acct_mgmt.c(2.74 KB)
📄 pam_authenticate.c(3.13 KB)
📄 pam_authenticate_secondary.c(2.34 KB)
📄 pam_chauthtok.c(3.12 KB)
📄 pam_close_session.c(2.73 KB)
📄 pam_end.c(3.02 KB)
📄 pam_error.c(2.65 KB)
📄 pam_get_authtok.c(7.76 KB)
📄 pam_get_data.c(2.94 KB)
📄 pam_get_item.c(3.9 KB)
📄 pam_get_mapped_authtok.c(2.33 KB)
📄 pam_get_mapped_username.c(2.35 KB)
📄 pam_get_user.c(4.58 KB)
📄 pam_getenv.c(2.75 KB)
📄 pam_getenvlist.c(3.33 KB)
📄 pam_info.c(2.66 KB)
📄 pam_open_session.c(2.77 KB)
📄 pam_prompt.c(2.82 KB)
📄 pam_putenv.c(3.35 KB)
📄 pam_set_data.c(3.36 KB)
📄 pam_set_item.c(3.52 KB)
📄 pam_set_mapped_authtok.c(2.33 KB)
📄 pam_set_mapped_username.c(2.29 KB)
📄 pam_setcred.c(3.08 KB)
📄 pam_setenv.c(3.01 KB)
📄 pam_sm_acct_mgmt.c(2.58 KB)
📄 pam_sm_authenticate.c(2.61 KB)
📄 pam_sm_authenticate_secondary.c(2.44 KB)
📄 pam_sm_chauthtok.c(2.82 KB)
📄 pam_sm_close_session.c(2.54 KB)
📄 pam_sm_get_mapped_authtok.c(2.42 KB)
📄 pam_sm_get_mapped_username.c(2.43 KB)
📄 pam_sm_open_session.c(2.53 KB)
📄 pam_sm_set_mapped_authtok.c(2.42 KB)
📄 pam_sm_set_mapped_username.c(2.36 KB)
📄 pam_sm_setcred.c(2.57 KB)
📄 pam_start.c(3.78 KB)
📄 pam_strerror.c(2.72 KB)
📄 pam_verror.c(2.58 KB)
📄 pam_vinfo.c(2.58 KB)
📄 pam_vprompt.c(3.98 KB)

Editing: openpam_subst.c

/*-
 * Copyright (c) 2011 Dag-Erling Smørgrav
 * 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.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * 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.
 *
 * $OpenPAM: openpam_subst.c 938 2017-04-30 21:34:42Z des $
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <security/pam_appl.h>

#include "openpam_impl.h"

#define subst_char(ch) do {			\
	int ch_ = (ch);				\
	if (buf && len < *bufsize)		\
		*buf++ = ch_;			\
	++len;					\
} while (0)

#define subst_string(s) do {			\
	const char *s_ = (s);			\
	while (*s_)				\
		subst_char(*s_++);		\
} while (0)

#define subst_item(i) do {			\
	int i_ = (i);				\
	const void *p_;				\
	ret = pam_get_item(pamh, i_, &p_);	\
	if (ret == PAM_SUCCESS && p_ != NULL)	\
		subst_string(p_);		\
} while (0)

/*
 * OpenPAM internal
 *
 * Substitute PAM item values in a string
 */

int
openpam_subst(const pam_handle_t *pamh,
    char *buf, size_t *bufsize, const char *template)
{
	size_t len;
	int ret;

ENTERS(template);
	if (template == NULL)
		template = "(null)";

len = 1; /* initialize to 1 for terminating NUL */
	ret = PAM_SUCCESS;
	while (*template && ret == PAM_SUCCESS) {
		if (template[0] == '%') {
			++template;
			switch (*template) {
			case 's':
				subst_item(PAM_SERVICE);
				break;
			case 't':
				subst_item(PAM_TTY);
				break;
			case 'h':
				subst_item(PAM_HOST);
				break;
			case 'u':
				subst_item(PAM_USER);
				break;
			case 'H':
				subst_item(PAM_RHOST);
				break;
			case 'U':
				subst_item(PAM_RUSER);
				break;
			case '\0':
				subst_char('%');
				break;
			default:
				subst_char('%');
				subst_char(*template);
			}
			++template;
		} else {
			subst_char(*template++);
		}
	}
	if (buf)
		*buf = '\0';
	if (ret == PAM_SUCCESS) {
		if (len > *bufsize)
			ret = PAM_TRY_AGAIN;
		*bufsize = len;
	}
	RETURNC(ret);
}

/*
 * Error codes:
 *
 *	=pam_get_item
 *	!PAM_SYMBOL_ERR
 *	PAM_TRY_AGAIN
 */

/**
 * The =openpam_subst function expands a string, substituting PAM item
 * values for all occurrences of specific substitution codes.
 * The =template argument points to the initial string.
 * The result is stored in the buffer pointed to by the =buf argument; the
 * =bufsize argument specifies the size of that buffer.
 * The actual size of the resulting string, including the terminating NUL
 * character, is stored in the location pointed to by the =bufsize
 * argument.
 *
 * If =buf is NULL, or if the buffer is too small to hold the expanded
 * string, =bufsize is updated to reflect the amount of space required to
 * hold the entire string, and =openpam_subst returns =PAM_TRY_AGAIN.
 *
 * If =openpam_subst fails for any other reason, the =bufsize argument is
 * untouched, but part of the buffer may still have been overwritten.
 *
 * Substitution codes are introduced by a percent character and correspond
 * to PAM items:
 *
 *	%H:
 *		Replaced by the current value of the =PAM_RHOST item.
 *	%h:
 *		Replaced by the current value of the =PAM_HOST item.
 *	%s:
 *		Replaced by the current value of the =PAM_SERVICE item.
 *	%t:
 *		Replaced by the current value of the =PAM_TTY item.
 *	%U:
 *		Replaced by the current value of the =PAM_RUSER item.
 *	%u:
 *		Replaced by the current value of the =PAM_USER item.
 *
 * >pam_get_authtok
 * >pam_get_item
 * >pam_get_user
 *
 * AUTHOR DES
 */

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Editing: openpam_subst.c

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