FreeBSD Doc/articles_pam — Spanish @ Weblate: <link xlink:href="https://mirrors.kernel.org/pub/linux/libs/pam/pre/doc/draft-morgan-pam-07.txt"> Pluggable Authentication Modules</link>

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	/- Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by ThinkSec AS and * Network Associates Laboratories, the Security Research Division of * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 * ("CBOSS"), as part of the DARPA CHATS research program. * * 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. * * $P4: //depot/projects/openpam/modules/pam_unix/pam_unix.c#3 $ * $FreeBSD: head/en_US.ISO8859-1/articles/pam/pam_unix.c 38826 2012-05-17 19:12:14Z hrs $ / #include <sys/param.h> #include <pwd.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <security/pam_modules.h> #include <security/pam_appl.h> #ifndef _OPENPAM static char password_prompt[] = "Password:"; #endif #ifndef PAM_EXTERN #define PAM_EXTERN #endif PAM_EXTERN int pam_sm_authenticate(pam_handle_t pamh, int flags, int argc, const char argv[]) { #ifndef _OPENPAM struct pam_conv conv; struct pam_message msg; const struct pam_message msgp; struct pam_response resp; #endif struct passwd pwd; const char user; char crypt_password, password; int pam_err, retry; /* identify user / if ((pam_err = pam_get_user(pamh, &user, NULL)) != PAM_SUCCESS) return (pam_err); if ((pwd = getpwnam(user)) == NULL) return (PAM_USER_UNKNOWN); / get password / #ifndef _OPENPAM pam_err = pam_get_item(pamh, PAM_CONV, (const void )&conv); if (pam_err != PAM_SUCCESS) return (PAM_SYSTEM_ERR); msg.msg_style = PAM_PROMPT_ECHO_OFF; msg.msg = password_prompt; msgp = &msg; #endif for (retry = 0; retry < 3; ++retry) { #ifdef _OPENPAM pam_err = pam_get_authtok(pamh, PAM_AUTHTOK, (const char )&password, NULL); #else resp = NULL; pam_err = (conv->conv)(1, &msgp, &resp, conv->appdata_ptr); if (resp != NULL) { if (pam_err == PAM_SUCCESS) password = resp->resp; else free(resp->resp); free(resp); } #endif if (pam_err == PAM_SUCCESS) break; } if (pam_err == PAM_CONV_ERR) return (pam_err); if (pam_err != PAM_SUCCESS) return (PAM_AUTH_ERR); /* compare passwords / if ((!pwd->pw_passwd[0] && (flags & PAM_DISALLOW_NULL_AUTHTOK)) \|\| (crypt_password = crypt(password, pwd->pw_passwd)) == NULL \|\| strcmp(crypt_password, pwd->pw_passwd) != 0) pam_err = PAM_AUTH_ERR; else pam_err = PAM_SUCCESS; #ifndef _OPENPAM free(password); #endif return (pam_err); } PAM_EXTERN int pam_sm_setcred(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_open_session(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_close_session(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_chauthtok(pam_handle_t pamh, int flags, int argc, const char *argv[]) { return (PAM_SERVICE_ERR); } #ifdef PAM_MODULE_ENTRY PAM_MODULE_ENTRY("pam_unix"); #endif	/- Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by ThinkSec AS and * Network Associates Laboratories, the Security Research Division of * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 * ("CBOSS"), as part of the DARPA CHATS research program. * * 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. * * $P4: //depot/projects/openpam/modules/pam_unix/pam_unix.c#3 $ * $FreeBSD: head/en_US.ISO8859-1/articles/pam/pam_unix.c 38826 2012-05-17 19:12:14Z hrs $ / #include <sys/param.h> #include <pwd.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <unistd.h> #include <security/pam_modules.h> #include <security/pam_appl.h> #ifndef _OPENPAM static char password_prompt[] = "Password:"; #endif #ifndef PAM_EXTERN #define PAM_EXTERN #endif PAM_EXTERN int pam_sm_authenticate(pam_handle_t pamh, int flags, int argc, const char argv[]) { #ifndef _OPENPAM struct pam_conv conv; struct pam_message msg; const struct pam_message msgp; struct pam_response resp; #endif struct passwd pwd; const char user; char crypt_password, password; int pam_err, retry; /* identify user / if ((pam_err = pam_get_user(pamh, &user, NULL)) != PAM_SUCCESS) return (pam_err); if ((pwd = getpwnam(user)) == NULL) return (PAM_USER_UNKNOWN); / get password / #ifndef _OPENPAM pam_err = pam_get_item(pamh, PAM_CONV, (const void )&conv); if (pam_err != PAM_SUCCESS) return (PAM_SYSTEM_ERR); msg.msg_style = PAM_PROMPT_ECHO_OFF; msg.msg = password_prompt; msgp = &msg; #endif for (retry = 0; retry < 3; ++retry) { #ifdef _OPENPAM pam_err = pam_get_authtok(pamh, PAM_AUTHTOK, (const char )&password, NULL); #else resp = NULL; pam_err = (conv->conv)(1, &msgp, &resp, conv->appdata_ptr); if (resp != NULL) { if (pam_err == PAM_SUCCESS) password = resp->resp; else free(resp->resp); free(resp); } #endif if (pam_err == PAM_SUCCESS) break; } if (pam_err == PAM_CONV_ERR) return (pam_err); if (pam_err != PAM_SUCCESS) return (PAM_AUTH_ERR); /* compare passwords / if ((!pwd->pw_passwd[0] && (flags & PAM_DISALLOW_NULL_AUTHTOK)) \|\| (crypt_password = crypt(password, pwd->pw_passwd)) == NULL \|\| strcmp(crypt_password, pwd->pw_passwd) != 0) pam_err = PAM_AUTH_ERR; else pam_err = PAM_SUCCESS; #ifndef _OPENPAM free(password); #endif return (pam_err); } PAM_EXTERN int pam_sm_setcred(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_acct_mgmt(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_open_session(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_close_session(pam_handle_t pamh, int flags, int argc, const char argv[]) { return (PAM_SUCCESS); } PAM_EXTERN int pam_sm_chauthtok(pam_handle_t pamh, int flags, int argc, const char *argv[]) { return (PAM_SERVICE_ERR); } #ifdef PAM_MODULE_ENTRY PAM_MODULE_ENTRY("pam_unix"); #endif
	Sample PAM Conversation Function	Ejemplo de función de conversación PAM
	The conversation function presented below is a greatly simplified version of OpenPAM's <citerefentry><refentrytitle>openpam_ttyconv</refentrytitle><manvolnum>3</manvolnum></citerefentry>. It is fully functional, and should give the reader a good idea of how a conversation function should behave, but it is far too simple for real-world use. Even if you are not using OpenPAM, feel free to download the source code and adapt <citerefentry><refentrytitle>openpam_ttyconv</refentrytitle><manvolnum>3</manvolnum></citerefentry> to your uses; we believe it to be as robust as a tty-oriented conversation function can reasonably get.	La función de conversación presentada a continuación es una versión muy simplificada de <citerefentry><refentrytitle>openpam_ttyconv</refentrytitle><manvolnum>3</manvolnum></citerefentry> de OpenPAM. Es completamente funcional y debería de dar al lector una buena idea de cómo debería de comportarse una función de conversación, pero es demasiado simple para su uso en el mundo real. Incluso si no está utilizando OpenPAM, no dude en descargar el código fuente y adaptar <citerefentry><refentrytitle>openpam_ttyconv</refentrytitle><manvolnum>3</manvolnum></citerefentry> a sus necesidades; creemos que es tan robusta como lo puede ser una función de conversación orientada a tty.
	/- Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by ThinkSec AS and * Network Associates Laboratories, the Security Research Division of * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 * ("CBOSS"), as part of the DARPA CHATS research program. * * 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. * * $FreeBSD: head/en_US.ISO8859-1/articles/pam/converse.c 38826 2012-05-17 19:12:14Z hrs $ / #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <security/pam_appl.h> int converse(int n, const struct pam_message msg, struct pam_response resp, void data) { struct pam_response aresp; char buf[PAM_MAX_RESP_SIZE]; int i; data = data; if (n <= 0 \|\| n > PAM_MAX_NUM_MSG) return (PAM_CONV_ERR); if ((aresp = calloc(n, sizeof aresp)) == NULL) return (PAM_BUF_ERR); for (i = 0; i < n; ++i) { aresp[i].resp_retcode = 0; aresp[i].resp = NULL; switch (msg[i]->msg_style) { case PAM_PROMPT_ECHO_OFF: aresp[i].resp = strdup(getpass(msg[i]->msg)); if (aresp[i].resp == NULL) goto fail; break; case PAM_PROMPT_ECHO_ON: fputs(msg[i]->msg, stderr); if (fgets(buf, sizeof buf, stdin) == NULL) goto fail; aresp[i].resp = strdup(buf); if (aresp[i].resp == NULL) goto fail; break; case PAM_ERROR_MSG: fputs(msg[i]->msg, stderr); if (strlen(msg[i]->msg) > 0 && msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n') fputc('\n', stderr); break; case PAM_TEXT_INFO: fputs(msg[i]->msg, stdout); if (strlen(msg[i]->msg) > 0 && msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n') fputc('\n', stdout); break; default: goto fail; } } resp = aresp; return (PAM_SUCCESS); fail: for (i = 0; i < n; ++i) { if (aresp[i].resp != NULL) { memset(aresp[i].resp, 0, strlen(aresp[i].resp)); free(aresp[i].resp); } } memset(aresp, 0, n sizeof aresp); resp = NULL; return (PAM_CONV_ERR); }	/- Copyright (c) 2002 Networks Associates Technology, Inc. * All rights reserved. * * This software was developed for the FreeBSD Project by ThinkSec AS and * Network Associates Laboratories, the Security Research Division of * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 * ("CBOSS"), as part of the DARPA CHATS research program. * * 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. * * $FreeBSD: head/en_US.ISO8859-1/articles/pam/converse.c 38826 2012-05-17 19:12:14Z hrs $ / #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <security/pam_appl.h> int converse(int n, const struct pam_message msg, struct pam_response resp, void data) { struct pam_response aresp; char buf[PAM_MAX_RESP_SIZE]; int i; data = data; if (n <= 0 \|\| n > PAM_MAX_NUM_MSG) return (PAM_CONV_ERR); if ((aresp = calloc(n, sizeof aresp)) == NULL) return (PAM_BUF_ERR); for (i = 0; i < n; ++i) { aresp[i].resp_retcode = 0; aresp[i].resp = NULL; switch (msg[i]->msg_style) { case PAM_PROMPT_ECHO_OFF: aresp[i].resp = strdup(getpass(msg[i]->msg)); if (aresp[i].resp == NULL) goto fail; break; case PAM_PROMPT_ECHO_ON: fputs(msg[i]->msg, stderr); if (fgets(buf, sizeof buf, stdin) == NULL) goto fail; aresp[i].resp = strdup(buf); if (aresp[i].resp == NULL) goto fail; break; case PAM_ERROR_MSG: fputs(msg[i]->msg, stderr); if (strlen(msg[i]->msg) > 0 && msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n') fputc('\n', stderr); break; case PAM_TEXT_INFO: fputs(msg[i]->msg, stdout); if (strlen(msg[i]->msg) > 0 && msg[i]->msg[strlen(msg[i]->msg) - 1] != '\n') fputc('\n', stdout); break; default: goto fail; } } resp = aresp; return (PAM_SUCCESS); fail: for (i = 0; i < n; ++i) { if (aresp[i].resp != NULL) { memset(aresp[i].resp, 0, strlen(aresp[i].resp)); free(aresp[i].resp); } } memset(aresp, 0, n sizeof aresp); resp = NULL; return (PAM_CONV_ERR); }
	Further Reading	Lecturas adicionales
	This is a list of documents relevant to PAM and related issues. It is by no means complete.	Esto es un listado de documentos relevantes sobre PAM y temas relacionados. El listado no está completo.
	Papers	Artículos
	Making Login Services Independent of Authentication Technologies	Hacer que los servicios de acceso sean independientes de las tecnologías de autenticación
	<personname> <surname>Samar</surname> <firstname>Vipin</firstname> </personname>	<personname> <surname>Samar</surname> <firstname>Vipin</firstname> </personname>
	<personname> <surname>Lai</surname> <firstname>Charlie</firstname> </personname>	<personname> <surname>Lai</surname> <firstname>Charlie</firstname> </personname>
	Sun Microsystems	Sun Microsystems
	<link xlink:href="https://pubs.opengroup.org/onlinepubs/8329799/toc.htm">X/Open Single Sign-on Preliminary Specification</link>	<link xlink:href="https://pubs.opengroup.org/onlinepubs/8329799/toc.htm">X/Open Single Sign-on Preliminary Specification</link>
	The Open Group	The Open Group
	1-85912-144-6	1-85912-144-6
	June 1997	June 1997
	<link xlink:href="https://mirrors.kernel.org/pub/linux/libs/pam/pre/doc/draft-morgan-pam-07.txt"> Pluggable Authentication Modules</link>	<link xlink:href="https://mirrors.kernel.org/pub/linux/libs/pam/pre/doc/draft-morgan-pam-07.txt">Módulos de autentificación conectables</link>
	<personname> <surname>Morgan</surname> <firstname>Andrew</firstname> <othername role="mi">G.</othername> </personname>	<personname> <surname>Morgan</surname> <firstname>Andrew</firstname> <othername role="mi">G.</othername> </personname>
	1999-10-06	1999-10-06
	User Manuals	Manuales de usuario
	<link xlink:href="https://docs.oracle.com/cd/E26505_01/html/E27224/pam-1.html"> PAM Administration</link>	<link xlink:href="https://docs.oracle.com/cd/E26505_01/html/E27224/pam-1.html"> Administración PAM</link>
	Related Web Pages	Páginas web relacionadas
	<link xlink:href="https://www.openpam.org/">OpenPAM homepage</link>	<link xlink:href="https://www.openpam.org/">Página web de OpenPAM</link>
	<personname> <surname>Smørgrav</surname> <firstname>Dag-Erling</firstname> </personname>	<personname> <surname>Smørgrav</surname> <firstname>Dag-Erling</firstname> </personname>
	ThinkSec AS	ThinkSec AS
	<link xlink:href="http://www.kernel.org/pub/linux/libs/pam/">Linux-PAM homepage</link>	<link xlink:href="http://www.kernel.org/pub/linux/libs/pam/">Linux-PAM homepage</link>
	Solaris PAM homepage	Página web de Solaris PAM