/*
- * Copyright (c) 2003-2005 Todd C. Miller <Todd.Miller@courtesan.com>
+ * Copyright (c) 2003-2008 Todd C. Miller <Todd.Miller@courtesan.com>
*
* This code is derived from software contributed by Aaron Spangler.
*
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
-#ifdef HAVE_ERR_H
-# include <err.h>
-#else
-# include "emul/err.h"
-#endif /* HAVE_ERR_H */
-#include <errno.h>
#ifdef HAVE_LBER_H
# include <lber.h>
#endif
#include <ldap.h>
+#if defined(HAVE_LDAP_SSL_H)
+# include <ldap_ssl.h>
+#elif defined(HAVE_MPS_LDAP_SSL_H)
+# include <mps/ldap_ssl.h>
+#endif
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+# ifdef HAVE_SASL_SASL_H
+# include <sasl/sasl.h>
+# else
+# include <sasl.h>
+# endif
+# if HAVE_GSS_KRB5_CCACHE_NAME
+# if defined(HAVE_GSSAPI_GSSAPI_KRB5_H)
+# include <gssapi/gssapi.h>
+# include <gssapi/gssapi_krb5.h>
+# elif defined(HAVE_GSSAPI_GSSAPI_H)
+# include <gssapi/gssapi.h>
+# else
+# include <gssapi.h>
+# endif
+# endif
+#endif
#include "sudo.h"
#include "parse.h"
+#include "lbuf.h"
#ifndef lint
-__unused static const char rcsid[] = "$Sudo: ldap.c,v 1.11.2.16 2007/09/04 14:58:46 millert Exp $";
+__unused static const char rcsid[] = "$Sudo: ldap.c,v 1.100 2008/04/23 12:30:07 millert Exp $";
#endif /* lint */
-#ifndef LINE_MAX
-# define LINE_MAX 2048
-#endif
-
#ifndef LDAP_OPT_SUCCESS
# define LDAP_OPT_SUCCESS LDAP_SUCCESS
#endif
-#if defined(LDAP_X_OPT_CONNECT_TIMEOUT) && !defined(LDAP_OPT_X_CONNECT_TIMEOUT)
-#define LDAP_OPT_X_CONNECT_TIMEOUT LDAP_OPT_X_CONNECT_TIMEOUT
+#ifndef LDAPS_PORT
+# define LDAPS_PORT 636
+#endif
+
+#if defined(HAVE_LDAP_SASL_INTERACTIVE_BIND_S) && !defined(LDAP_SASL_QUIET)
+# define LDAP_SASL_QUIET 0
+#endif
+
+#ifndef HAVE_LDAP_UNBIND_EXT_S
+#define ldap_unbind_ext_s(a, b, c) ldap_unbind_s(a)
+#endif
+
+#ifndef HAVE_LDAP_SEARCH_EXT_S
+#define ldap_search_ext_s(a, b, c, d, e, f, g, h, i, j, k) \
+ ldap_search_s(a, b, c, d, e, f, k)
#endif
-#define DPRINTF(args, level) if (ldap_conf.debug >= level) warnx args
+#define LDAP_FOREACH(var, ld, res) \
+ for ((var) = ldap_first_entry((ld), (res)); \
+ (var) != NULL; \
+ (var) = ldap_next_entry((ld), (var)))
+
+#define DPRINTF(args, level) if (ldap_conf.debug >= level) warningx args
+
+#define CONF_BOOL 0
+#define CONF_INT 1
+#define CONF_STR 2
+
+#define SUDO_LDAP_SSL 1
+#define SUDO_LDAP_STARTTLS 2
+
+struct ldap_config_table {
+ const char *conf_str; /* config file string */
+ short type; /* CONF_BOOL, CONF_INT, CONF_STR */
+ short connected; /* connection-specific value? */
+ int opt_val; /* LDAP_OPT_* (or -1 for sudo internal) */
+ void *valp; /* pointer into ldap_conf */
+};
/* ldap configuration structure */
-struct ldap_config {
+static struct ldap_config {
int port;
int version;
int debug;
+ int ldap_debug;
int tls_checkpeer;
int timelimit;
int bind_timelimit;
+ int use_sasl;
+ int rootuse_sasl;
+ int ssl_mode;
char *host;
char *uri;
char *binddn;
char *tls_cipher_suite;
char *tls_certfile;
char *tls_keyfile;
+ char *sasl_auth_id;
+ char *rootsasl_auth_id;
+ char *sasl_secprops;
+ char *krb5_ccname;
} ldap_conf;
-static void sudo_ldap_update_defaults __P((LDAP *));
-static void sudo_ldap_close __P((LDAP *));
-static LDAP *sudo_ldap_open __P((void));
+static struct ldap_config_table ldap_conf_table[] = {
+ { "sudoers_debug", CONF_INT, FALSE, -1, &ldap_conf.debug },
+ { "host", CONF_STR, FALSE, -1, &ldap_conf.host },
+ { "port", CONF_INT, FALSE, -1, &ldap_conf.port },
+ { "ssl", CONF_STR, FALSE, -1, &ldap_conf.ssl },
+ { "sslpath", CONF_STR, FALSE, -1, &ldap_conf.tls_certfile },
+ { "uri", CONF_STR, FALSE, -1, &ldap_conf.uri },
+#ifdef LDAP_OPT_DEBUG_LEVEL
+ { "debug", CONF_INT, FALSE, LDAP_OPT_DEBUG_LEVEL, &ldap_conf.ldap_debug },
+#endif
+#ifdef LDAP_OPT_PROTOCOL_VERSION
+ { "ldap_version", CONF_INT, TRUE, LDAP_OPT_PROTOCOL_VERSION,
+ &ldap_conf.version },
+#endif
+#ifdef LDAP_OPT_X_TLS_REQUIRE_CERT
+ { "tls_checkpeer", CONF_BOOL, FALSE, LDAP_OPT_X_TLS_REQUIRE_CERT,
+ &ldap_conf.tls_checkpeer },
+#else
+ { "tls_checkpeer", CONF_BOOL, FALSE, -1, &ldap_conf.tls_checkpeer },
+#endif
+#ifdef LDAP_OPT_X_TLS_CACERTFILE
+ { "tls_cacertfile", CONF_STR, FALSE, LDAP_OPT_X_TLS_CACERTFILE,
+ &ldap_conf.tls_cacertfile },
+#endif
+#ifdef LDAP_OPT_X_TLS_CACERTDIR
+ { "tls_cacertdir", CONF_STR, FALSE, LDAP_OPT_X_TLS_CACERTDIR,
+ &ldap_conf.tls_cacertdir },
+#endif
+#ifdef LDAP_OPT_X_TLS_RANDOM_FILE
+ { "tls_randfile", CONF_STR, FALSE, LDAP_OPT_X_TLS_RANDOM_FILE,
+ &ldap_conf.tls_random_file },
+#endif
+#ifdef LDAP_OPT_X_TLS_CIPHER_SUITE
+ { "tls_ciphers", CONF_STR, FALSE, LDAP_OPT_X_TLS_CIPHER_SUITE,
+ &ldap_conf.tls_cipher_suite },
+#endif
+#ifdef LDAP_OPT_X_TLS_CERTFILE
+ { "tls_cert", CONF_STR, FALSE, LDAP_OPT_X_TLS_CERTFILE,
+ &ldap_conf.tls_certfile },
+#else
+ { "tls_cert", CONF_STR, FALSE, -1, &ldap_conf.tls_certfile },
+#endif
+#ifdef LDAP_OPT_X_TLS_KEYFILE
+ { "tls_key", CONF_STR, FALSE, LDAP_OPT_X_TLS_KEYFILE,
+ &ldap_conf.tls_keyfile },
+#else
+ { "tls_key", CONF_STR, FALSE, -1, &ldap_conf.tls_keyfile },
+#endif
+#ifdef LDAP_OPT_NETWORK_TIMEOUT
+ { "bind_timelimit", CONF_INT, TRUE, -1 /* needs timeval, set manually */,
+ &ldap_conf.bind_timelimit },
+#elif defined(LDAP_X_OPT_CONNECT_TIMEOUT)
+ { "bind_timelimit", CONF_INT, TRUE, LDAP_X_OPT_CONNECT_TIMEOUT,
+ &ldap_conf.bind_timelimit },
+#endif
+ { "timelimit", CONF_INT, TRUE, LDAP_OPT_TIMELIMIT, &ldap_conf.timelimit },
+ { "binddn", CONF_STR, FALSE, -1, &ldap_conf.binddn },
+ { "bindpw", CONF_STR, FALSE, -1, &ldap_conf.bindpw },
+ { "rootbinddn", CONF_STR, FALSE, -1, &ldap_conf.rootbinddn },
+ { "sudoers_base", CONF_STR, FALSE, -1, &ldap_conf.base },
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+ { "use_sasl", CONF_BOOL, FALSE, -1, &ldap_conf.use_sasl },
+ { "sasl_auth_id", CONF_STR, FALSE, -1, &ldap_conf.sasl_auth_id },
+ { "rootuse_sasl", CONF_BOOL, FALSE, -1, &ldap_conf.rootuse_sasl },
+ { "rootsasl_auth_id", CONF_STR, FALSE, -1, &ldap_conf.rootsasl_auth_id },
+# ifdef LDAP_OPT_X_SASL_SECPROPS
+ { "sasl_secprops", CONF_STR, TRUE, LDAP_OPT_X_SASL_SECPROPS,
+ &ldap_conf.sasl_secprops },
+# endif
+ { "krb5_ccname", CONF_STR, FALSE, -1, &ldap_conf.krb5_ccname },
+#endif /* HAVE_LDAP_SASL_INTERACTIVE_BIND_S */
+ { NULL }
+};
+
+struct sudo_nss sudo_nss_ldap = {
+ &sudo_nss_ldap,
+ NULL,
+ sudo_ldap_open,
+ sudo_ldap_close,
+ sudo_ldap_parse,
+ sudo_ldap_setdefs,
+ sudo_ldap_lookup,
+ sudo_ldap_display_cmnd,
+ sudo_ldap_display_defaults,
+ sudo_ldap_display_bound_defaults,
+ sudo_ldap_display_privs
+};
+
+#ifdef HAVE_LDAP_CREATE
+/*
+ * Rebuild the hosts list and include a specific port for each host.
+ * ldap_create() does not take a default port parameter so we must
+ * append one if we want something other than LDAP_PORT.
+ */
+static void
+sudo_ldap_conf_add_ports()
+{
+
+ char *host, *port, defport[13];
+ char hostbuf[LINE_MAX * 2];
+
+ hostbuf[0] = '\0';
+ if (snprintf(defport, sizeof(defport), ":%d", ldap_conf.port) >= sizeof(defport))
+ errorx(1, "sudo_ldap_conf_add_ports: port too large");
+
+ for ((host = strtok(ldap_conf.host, " \t")); host; (host = strtok(NULL, " \t"))) {
+ if (hostbuf[0] != '\0') {
+ if (strlcat(hostbuf, " ", sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+ }
+
+ if (strlcat(hostbuf, host, sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+ /* Append port if there is not one already. */
+ if ((port = strrchr(host, ':')) == NULL || !isdigit(port[1])) {
+ if (strlcat(hostbuf, defport, sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+ }
+ }
+
+ free(ldap_conf.host);
+ ldap_conf.host = estrdup(hostbuf);
+ return;
+
+toobig:
+ errorx(1, "sudo_ldap_conf_add_ports: out of space expanding hostbuf");
+}
+#endif
+
+#ifndef HAVE_LDAP_INITIALIZE
+/*
+ * For each uri, convert to host:port pairs. For ldaps:// enable SSL
+ * Accepts: uris of the form ldap:/// or ldap://hostname:portnum/
+ * where the trailing slash is optional.
+ */
+static int
+sudo_ldap_parse_uri(uri_list)
+ const char *uri_list;
+{
+ char *buf, *uri, *host, *cp, *port;
+ char hostbuf[LINE_MAX];
+ int nldap = 0, nldaps = 0;
+ int rc = -1;
+
+ buf = estrdup(uri_list);
+ hostbuf[0] = '\0';
+ for ((uri = strtok(buf, " \t")); uri != NULL; (uri = strtok(NULL, " \t"))) {
+ if (strncasecmp(uri, "ldap://", 7) == 0) {
+ nldap++;
+ host = uri + 7;
+ } else if (strncasecmp(uri, "ldaps://", 8) == 0) {
+ nldaps++;
+ host = uri + 8;
+ } else {
+ warningx("unsupported LDAP uri type: %s", uri);
+ goto done;
+ }
+
+ /* trim optional trailing slash */
+ if ((cp = strrchr(host, '/')) != NULL && cp[1] == '\0') {
+ *cp = '\0';
+ }
+
+ if (hostbuf[0] != '\0') {
+ if (strlcat(hostbuf, " ", sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+ }
+
+ if (*host == '\0')
+ host = "localhost"; /* no host specified, use localhost */
+
+ if (strlcat(hostbuf, host, sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+
+ /* If using SSL and no port specified, add port 636 */
+ if (nldaps) {
+ if ((port = strrchr(host, ':')) == NULL || !isdigit(port[1]))
+ if (strlcat(hostbuf, ":636", sizeof(hostbuf)) >= sizeof(hostbuf))
+ goto toobig;
+ }
+ }
+ if (hostbuf[0] == '\0') {
+ warningx("invalid uri: %s", uri_list);
+ goto done;
+ }
+
+ if (nldaps != 0) {
+ if (nldap != 0) {
+ warningx("cannot mix ldap and ldaps URIs");
+ goto done;
+ }
+ if (ldap_conf.ssl_mode == SUDO_LDAP_STARTTLS) {
+ warningx("cannot mix ldaps and starttls");
+ goto done;
+ }
+ ldap_conf.ssl_mode = SUDO_LDAP_SSL;
+ }
+
+ free(ldap_conf.host);
+ ldap_conf.host = estrdup(hostbuf);
+ rc = 0;
+
+done:
+ efree(buf);
+ return(rc);
+
+toobig:
+ errorx(1, "sudo_ldap_parse_uri: out of space building hostbuf");
+}
+#endif /* HAVE_LDAP_INITIALIZE */
+
+static int
+sudo_ldap_init(ldp, host, port)
+ LDAP **ldp;
+ const char *host;
+ int port;
+{
+ LDAP *ld = NULL;
+ int rc = LDAP_CONNECT_ERROR;
+
+#ifdef HAVE_LDAPSSL_INIT
+ if (ldap_conf.ssl_mode == SUDO_LDAP_SSL) {
+ DPRINTF(("ldapssl_clientauth_init(%s, %s)",
+ ldap_conf.tls_certfile ? ldap_conf.tls_certfile : "NULL",
+ ldap_conf.tls_keyfile ? ldap_conf.tls_keyfile : "NULL"), 2);
+ rc = ldapssl_clientauth_init(ldap_conf.tls_certfile, NULL,
+ ldap_conf.tls_keyfile != NULL, ldap_conf.tls_keyfile, NULL);
+ if (rc != LDAP_SUCCESS) {
+ warningx("unable to initialize SSL cert and key db: %s",
+ ldapssl_err2string(rc));
+ goto done;
+ }
+
+ DPRINTF(("ldapssl_init(%s, %d, 1)", host, port), 2);
+ if ((ld = ldapssl_init(host, port, 1)) != NULL)
+ rc = LDAP_SUCCESS;
+ } else
+#endif
+ {
+#ifdef HAVE_LDAP_CREATE
+ DPRINTF(("ldap_create()"), 2);
+ if ((rc = ldap_create(&ld)) != LDAP_SUCCESS)
+ goto done;
+ DPRINTF(("ldap_set_option(LDAP_OPT_HOST_NAME, %s)", host), 2);
+ rc = ldap_set_option(ld, LDAP_OPT_HOST_NAME, host);
+#else
+ DPRINTF(("ldap_init(%s, %d)", host, port), 2);
+ if ((ld = ldap_init(host, port)) != NULL)
+ rc = LDAP_SUCCESS;
+#endif
+ }
+
+done:
+ *ldp = ld;
+ return(rc);
+}
/*
* Walk through search results and return TRUE if we have a matching
* netgroup, else FALSE.
*/
int
-sudo_ldap_check_user_netgroup(ld, entry)
+sudo_ldap_check_user_netgroup(ld, entry, user)
LDAP *ld;
LDAPMessage *entry;
+ char *user;
{
- char **v = NULL, **p = NULL;
+ struct berval **bv, **p;
+ char *val;
int ret = FALSE;
if (!entry)
return(ret);
/* get the values from the entry */
- v = ldap_get_values(ld, entry, "sudoUser");
+ bv = ldap_get_values_len(ld, entry, "sudoUser");
+ if (bv == NULL)
+ return(ret);
/* walk through values */
- for (p = v; p && *p && !ret; p++) {
+ for (p = bv; *p != NULL && !ret; p++) {
+ val = (*p)->bv_val;
/* match any */
- if (netgr_matches(*p, NULL, NULL, user_name))
+ if (netgr_matches(val, NULL, NULL, user))
ret = TRUE;
- DPRINTF(("ldap sudoUser netgroup '%s' ... %s", *p,
+ DPRINTF(("ldap sudoUser netgroup '%s' ... %s", val,
ret ? "MATCH!" : "not"), 2);
}
- if (v)
- ldap_value_free(v); /* cleanup */
+ ldap_value_free_len(bv); /* cleanup */
return(ret);
}
LDAP *ld;
LDAPMessage *entry;
{
- char **v = NULL, **p = NULL;
+ struct berval **bv, **p;
+ char *val;
int ret = FALSE;
if (!entry)
return(ret);
/* get the values from the entry */
- v = ldap_get_values(ld, entry, "sudoHost");
+ bv = ldap_get_values_len(ld, entry, "sudoHost");
+ if (bv == NULL)
+ return(ret);
/* walk through values */
- for (p = v; p && *p && !ret; p++) {
+ for (p = bv; *p != NULL && !ret; p++) {
+ val = (*p)->bv_val;
/* match any or address or netgroup or hostname */
- if (!strcasecmp(*p, "ALL") || addr_matches(*p) ||
- netgr_matches(*p, user_host, user_shost, NULL) ||
- !hostname_matches(user_shost, user_host, *p))
+ if (!strcmp(val, "ALL") || addr_matches(val) ||
+ netgr_matches(val, user_host, user_shost, NULL) ||
+ hostname_matches(user_shost, user_host, val))
ret = TRUE;
- DPRINTF(("ldap sudoHost '%s' ... %s", *p,
+ DPRINTF(("ldap sudoHost '%s' ... %s", val,
ret ? "MATCH!" : "not"), 2);
}
- if (v)
- ldap_value_free(v); /* cleanup */
+ ldap_value_free_len(bv); /* cleanup */
return(ret);
}
-/*
- * Walk through search results and return TRUE if we have a runas match,
- * else FALSE.
- * Since the runas directive in /etc/sudoers is optional, so is sudoRunAs.
- */
int
-sudo_ldap_check_runas(ld, entry)
+sudo_ldap_check_runas_user(ld, entry)
LDAP *ld;
LDAPMessage *entry;
{
- char **v = NULL, **p = NULL;
+ struct berval **bv, **p;
+ char *val;
int ret = FALSE;
- if (!entry)
- return(ret);
+ if (!runas_pw)
+ return(UNSPEC);
- /* get the values from the entry */
- v = ldap_get_values(ld, entry, "sudoRunAs");
+ /* get the runas user from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsUser");
+ if (bv == NULL)
+ bv = ldap_get_values_len(ld, entry, "sudoRunAs"); /* old style */
/*
* BUG:
* For now just require users to always use -u option unless its set
* in the global defaults. This behaviour is no different than the global
* /etc/sudoers.
- *
+ *
* Sigh - maybe add this feature later
- *
*/
/*
* If there are no runas entries, match runas_default against
* what the user specified on the command line.
*/
- if (!v)
- ret = !strcasecmp(runas_pw->pw_name, def_runas_default);
+ if (bv == NULL)
+ return(!strcasecmp(runas_pw->pw_name, def_runas_default));
/* walk through values returned, looking for a match */
- for (p = v; p && *p && !ret; p++) {
- switch (*p[0]) {
+ for (p = bv; *p != NULL && !ret; p++) {
+ val = (*p)->bv_val;
+ switch (val[0]) {
case '+':
- if (netgr_matches(*p, NULL, NULL, runas_pw->pw_name))
+ if (netgr_matches(val, NULL, NULL, runas_pw->pw_name))
ret = TRUE;
break;
case '%':
- if (usergr_matches(*p, runas_pw->pw_name, runas_pw))
+ if (usergr_matches(val, runas_pw->pw_name, runas_pw))
ret = TRUE;
break;
case 'A':
- if (strcmp(*p, "ALL") == 0) {
+ if (strcmp(val, "ALL") == 0) {
ret = TRUE;
break;
}
/* FALLTHROUGH */
default:
- if (strcasecmp(*p, runas_pw->pw_name) == 0)
+ if (strcasecmp(val, runas_pw->pw_name) == 0)
ret = TRUE;
break;
}
- DPRINTF(("ldap sudoRunAs '%s' ... %s", *p,
+ DPRINTF(("ldap sudoRunAsUser '%s' ... %s", val,
ret ? "MATCH!" : "not"), 2);
}
- if (v)
- ldap_value_free(v); /* cleanup */
+ ldap_value_free_len(bv); /* cleanup */
+
+ return(ret);
+}
+
+int
+sudo_ldap_check_runas_group(ld, entry)
+ LDAP *ld;
+ LDAPMessage *entry;
+{
+ struct berval **bv, **p;
+ char *val;
+ int ret = FALSE;
+
+ /* runas_gr is only set if the user specified the -g flag */
+ if (!runas_gr)
+ return(UNSPEC);
+
+ /* get the values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsGroup");
+ if (bv == NULL)
+ return(ret);
+
+ /* walk through values returned, looking for a match */
+ for (p = bv; *p != NULL && !ret; p++) {
+ val = (*p)->bv_val;
+ if (strcmp(val, "ALL") == 0 || group_matches(val, runas_gr))
+ ret = TRUE;
+ DPRINTF(("ldap sudoRunAsGroup '%s' ... %s", val,
+ ret ? "MATCH!" : "not"), 2);
+ }
+
+ ldap_value_free_len(bv); /* cleanup */
+
+ return(ret);
+}
+
+/*
+ * Walk through search results and return TRUE if we have a runas match,
+ * else FALSE. RunAs info is optional.
+ */
+int
+sudo_ldap_check_runas(ld, entry)
+ LDAP *ld;
+ LDAPMessage *entry;
+{
+ int ret;
+
+ if (!entry)
+ return(FALSE);
+
+ ret = sudo_ldap_check_runas_user(ld, entry) != FALSE &&
+ sudo_ldap_check_runas_group(ld, entry) != FALSE;
return(ret);
}
/*
- * Walk through search results and return TRUE if we have a command match.
+ * Walk through search results and return TRUE if we have a command match,
+ * FALSE if disallowed and UNSPEC if not matched.
*/
int
-sudo_ldap_check_command(ld, entry)
+sudo_ldap_check_command(ld, entry, setenv_implied)
LDAP *ld;
LDAPMessage *entry;
+ int *setenv_implied;
{
- char *allowed_cmnd, *allowed_args, **v = NULL, **p = NULL;
- int foundbang, ret = FALSE;
+ struct berval **bv, **p;
+ char *allowed_cmnd, *allowed_args, *val;
+ int foundbang, ret = UNSPEC;
if (!entry)
return(ret);
- v = ldap_get_values(ld, entry, "sudoCommand");
+ bv = ldap_get_values_len(ld, entry, "sudoCommand");
+ if (bv == NULL)
+ return(ret);
- /* get_first_entry */
- for (p = v; p && *p && ret >= 0; p++) {
+ for (p = bv; *p != NULL && ret != FALSE; p++) {
+ val = (*p)->bv_val;
/* Match against ALL ? */
- if (!strcasecmp(*p, "ALL")) {
+ if (!strcmp(val, "ALL")) {
ret = TRUE;
- DPRINTF(("ldap sudoCommand '%s' ... MATCH!", *p), 2);
+ if (setenv_implied != NULL)
+ *setenv_implied = TRUE;
+ DPRINTF(("ldap sudoCommand '%s' ... MATCH!", val), 2);
continue;
}
/* check for !command */
- if (**p == '!') {
+ if (*val == '!') {
foundbang = TRUE;
- allowed_cmnd = estrdup(1 + *p); /* !command */
+ allowed_cmnd = estrdup(1 + val); /* !command */
} else {
foundbang = FALSE;
- allowed_cmnd = estrdup(*p); /* command */
+ allowed_cmnd = estrdup(val); /* command */
}
/* split optional args away from command */
* If allowed (no bang) set ret but keep on checking.
* If disallowed (bang), exit loop.
*/
- ret = foundbang ? -1 : TRUE;
+ ret = foundbang ? FALSE : TRUE;
}
- DPRINTF(("ldap sudoCommand '%s' ... %s", *p,
+ DPRINTF(("ldap sudoCommand '%s' ... %s", val,
ret == TRUE ? "MATCH!" : "not"), 2);
efree(allowed_cmnd); /* cleanup */
}
- if (v)
- ldap_value_free(v); /* more cleanup */
+ ldap_value_free_len(bv); /* more cleanup */
+
+ return(ret);
+}
+
+/*
+ * Search for boolean "option" in sudoOption.
+ * Returns TRUE if found and allowed, FALSE if negated, else UNSPEC.
+ */
+int
+sudo_ldap_check_bool(ld, entry, option)
+ LDAP *ld;
+ LDAPMessage *entry;
+ char *option;
+{
+ struct berval **bv, **p;
+ char ch, *var;
+ int ret = UNSPEC;
+
+ if (entry == NULL)
+ return(UNSPEC);
+
+ bv = ldap_get_values_len(ld, entry, "sudoOption");
+ if (bv == NULL)
+ return(ret);
+
+ /* walk through options */
+ for (p = bv; *p != NULL; p++) {
+ var = (*p)->bv_val;;
+ DPRINTF(("ldap sudoOption: '%s'", var), 2);
+
+ if ((ch = *var) == '!')
+ var++;
+ if (strcmp(var, option) == 0)
+ ret = (ch != '!');
+ }
+
+ ldap_value_free_len(bv);
- /* return TRUE if we found at least one ALLOW and no DENY */
- return(ret > 0);
+ return(ret);
}
/*
LDAP *ld;
LDAPMessage *entry;
{
- char op, *var, *val, **v = NULL, **p = NULL;
+ struct berval **bv, **p;
+ char op, *var, *val;
- if (!entry)
+ if (entry == NULL)
return;
- v = ldap_get_values(ld, entry, "sudoOption");
+ bv = ldap_get_values_len(ld, entry, "sudoOption");
+ if (bv == NULL)
+ return;
/* walk through options */
- for (p = v; p && *p; p++) {
-
- DPRINTF(("ldap sudoOption: '%s'", *p), 2);
- var = estrdup(*p);
+ for (p = bv; *p != NULL; p++) {
+ var = estrdup((*p)->bv_val);
+ DPRINTF(("ldap sudoOption: '%s'", var), 2);
/* check for equals sign past first char */
val = strchr(var, '=');
efree(var);
}
- if (v)
- ldap_value_free(v);
-}
-
-/*
- * Concatenate strings, dynamically growing them as necessary.
- * Strings can be arbitrarily long and are allocated/reallocated on
- * the fly. Make sure to free them when you are done.
- *
- * Usage:
- *
- * char *s=NULL;
- * size_t sz;
- *
- * ncat(&s,&sz,"This ");
- * ncat(&s,&sz,"is ");
- * ncat(&s,&sz,"an ");
- * ncat(&s,&sz,"arbitrarily ");
- * ncat(&s,&sz,"long ");
- * ncat(&s,&sz,"string!");
- *
- * printf("String Value='%s', but has %d bytes allocated\n",s,sz);
- *
- */
-void
-ncat(s, sz, src)
- char **s;
- size_t *sz;
- char *src;
-{
- size_t nsz;
-
- /* handle initial alloc */
- if (*s == NULL) {
- *s = estrdup(src);
- *sz = strlen(src) + 1;
- return;
- }
- /* handle realloc */
- nsz = strlen(*s) + strlen(src) + 1;
- if (*sz < nsz)
- *s = erealloc((void *) *s, *sz = nsz * 2);
- strlcat(*s, src, *sz);
+ ldap_value_free_len(bv);
}
/*
* builds together a filter to check against ldap
*/
char *
-sudo_ldap_build_pass1()
+sudo_ldap_build_pass1(pw)
+ struct passwd *pw;
{
struct group *grp;
size_t sz;
- char *b = NULL;
+ char *buf;
int i;
- /* global OR */
- ncat(&b, &sz, "(|");
+ /* Start with (|(sudoUser=USERNAME)(sudoUser=ALL)) + NUL */
+ sz = 29 + strlen(pw->pw_name);
+
+ /* Add space for groups */
+ if ((grp = sudo_getgrgid(pw->pw_gid)) != NULL)
+ sz += 12 + strlen(grp->gr_name); /* primary group */
+ for (i = 0; i < user_ngroups; i++) {
+ if (user_groups[i] == pw->pw_gid)
+ continue;
+ if ((grp = sudo_getgrgid(user_groups[i])) != NULL)
+ sz += 12 + strlen(grp->gr_name); /* supplementary group */
+ }
+ buf = emalloc(sz);
- /* build filter sudoUser=user_name */
- ncat(&b, &sz, "(sudoUser=");
- ncat(&b, &sz, user_name);
- ncat(&b, &sz, ")");
+ /* Global OR + sudoUser=user_name filter */
+ (void) strlcpy(buf, "(|(sudoUser=", sz);
+ (void) strlcat(buf, pw->pw_name, sz);
+ (void) strlcat(buf, ")", sz);
/* Append primary group */
- grp = getgrgid(user_gid);
- if (grp != NULL) {
- ncat(&b, &sz, "(sudoUser=%");
- ncat(&b, &sz, grp -> gr_name);
- ncat(&b, &sz, ")");
+ if ((grp = sudo_getgrgid(pw->pw_gid)) != NULL) {
+ (void) strlcat(buf, "(sudoUser=%", sz);
+ (void) strlcat(buf, grp->gr_name, sz);
+ (void) strlcat(buf, ")", sz);
}
/* Append supplementary groups */
for (i = 0; i < user_ngroups; i++) {
- if ((grp = getgrgid(user_groups[i])) != NULL) {
- ncat(&b, &sz, "(sudoUser=%");
- ncat(&b, &sz, grp -> gr_name);
- ncat(&b, &sz, ")");
+ if (user_groups[i] == pw->pw_gid)
+ continue;
+ if ((grp = sudo_getgrgid(user_groups[i])) != NULL) {
+ (void) strlcat(buf, "(sudoUser=%", sz);
+ (void) strlcat(buf, grp->gr_name, sz);
+ (void) strlcat(buf, ")", sz);
}
}
- /* Add ALL to list */
- ncat(&b, &sz, "(sudoUser=ALL)");
-
- /* End of OR List */
- ncat(&b, &sz, ")");
+ /* Add ALL to list and end the global OR */
+ if (strlcat(buf, "(sudoUser=ALL))", sz) >= sz)
+ errorx(1, "sudo_ldap_build_pass1 allocation mismatch");
- return(b);
+ return(buf);
}
/*
return(-1);
}
+static void
+sudo_ldap_read_secret(path)
+ const char *path;
+{
+ FILE *fp;
+ char buf[LINE_MAX], *cp;
+
+ if ((fp = fopen(_PATH_LDAP_SECRET, "r")) != NULL) {
+ if (fgets(buf, sizeof(buf), fp) != NULL) {
+ if ((cp = strchr(buf, '\n')) != NULL)
+ *cp = '\0';
+ /* copy to bindpw and binddn */
+ efree(ldap_conf.bindpw);
+ ldap_conf.bindpw = estrdup(buf);
+ efree(ldap_conf.binddn);
+ ldap_conf.binddn = ldap_conf.rootbinddn;
+ ldap_conf.rootbinddn = NULL;
+ }
+ fclose(fp);
+ }
+}
+
int
sudo_ldap_read_config()
{
- FILE *f;
- char buf[LINE_MAX], *c, *keyword, *value;
+ FILE *fp;
+ char *cp, *keyword, *value;
+ struct ldap_config_table *cur;
/* defaults */
ldap_conf.version = 3;
- ldap_conf.port = 389;
+ ldap_conf.port = -1;
ldap_conf.tls_checkpeer = -1;
ldap_conf.timelimit = -1;
ldap_conf.bind_timelimit = -1;
+ ldap_conf.use_sasl = -1;
+ ldap_conf.rootuse_sasl = -1;
- if ((f = fopen(_PATH_LDAP_CONF, "r")) == NULL)
+ if ((fp = fopen(_PATH_LDAP_CONF, "r")) == NULL)
return(FALSE);
- while (fgets(buf, sizeof(buf), f)) {
- /* ignore text after comment character */
- if ((c = strchr(buf, '#')) != NULL)
- *c = '\0';
- /* skip leading whitespace */
- for (c = buf; isspace((unsigned char) *c); c++)
- /* nothing */;
-
- if (*c == '\0' || *c == '\n')
+ while ((cp = sudo_parseln(fp)) != NULL) {
+ if (*cp == '\0')
continue; /* skip empty line */
- /* properly terminate keyword string */
- keyword = c;
- while (*c && !isspace((unsigned char) *c))
- c++;
- if (*c)
- *c++ = '\0'; /* terminate keyword */
+ /* split into keyword and value */
+ keyword = cp;
+ while (*cp && !isblank((unsigned char) *cp))
+ cp++;
+ if (*cp)
+ *cp++ = '\0'; /* terminate keyword */
/* skip whitespace before value */
- while (isspace((unsigned char) *c))
- c++;
- value = c;
-
- /* trim whitespace after value */
- while (*c)
- c++; /* wind to end */
- while (--c > value && isspace((unsigned char) *c))
- *c = '\0';
-
- /* The following macros make the code much more readable */
-
-#define MATCH_S(x,y) if (!strcasecmp(keyword,x)) \
- { efree(y); y=estrdup(value); }
-#define MATCH_I(x,y) if (!strcasecmp(keyword,x)) { y=atoi(value); }
-#define MATCH_B(x,y) if (!strcasecmp(keyword,x)) { y=_atobool(value); }
-
- /*
- * Parse values using a continues chain of if else if else if else if
- * else ...
- */
- MATCH_S("host", ldap_conf.host)
- else
- MATCH_I("port", ldap_conf.port)
- else
- MATCH_S("ssl", ldap_conf.ssl)
- else
- MATCH_B("tls_checkpeer", ldap_conf.tls_checkpeer)
- else
- MATCH_S("tls_cacertfile", ldap_conf.tls_cacertfile)
- else
- MATCH_S("tls_cacertdir", ldap_conf.tls_cacertdir)
- else
- MATCH_S("tls_randfile", ldap_conf.tls_random_file)
- else
- MATCH_S("tls_ciphers", ldap_conf.tls_cipher_suite)
- else
- MATCH_S("tls_cert", ldap_conf.tls_certfile)
- else
- MATCH_S("tls_key", ldap_conf.tls_keyfile)
- else
- MATCH_I("ldap_version", ldap_conf.version)
- else
- MATCH_I("bind_timelimit", ldap_conf.bind_timelimit)
- else
- MATCH_I("timelimit", ldap_conf.timelimit)
- else
- MATCH_S("uri", ldap_conf.uri)
- else
- MATCH_S("binddn", ldap_conf.binddn)
- else
- MATCH_S("bindpw", ldap_conf.bindpw)
- else
- MATCH_S("rootbinddn", ldap_conf.rootbinddn)
- else
- MATCH_S("sudoers_base", ldap_conf.base)
- else
- MATCH_I("sudoers_debug", ldap_conf.debug)
- else {
-
- /*
- * The keyword was unrecognized. Since this config file is
- * shared by multiple programs, it is appropriate to silently
- * ignore options this program does not understand
- */
+ while (isblank((unsigned char) *cp))
+ cp++;
+ value = cp;
+
+ /* Look up keyword in config table. */
+ for (cur = ldap_conf_table; cur->conf_str != NULL; cur++) {
+ if (strcasecmp(keyword, cur->conf_str) == 0) {
+ switch (cur->type) {
+ case CONF_BOOL:
+ *(int *)(cur->valp) = _atobool(value);
+ break;
+ case CONF_INT:
+ *(int *)(cur->valp) = atoi(value);
+ break;
+ case CONF_STR:
+ efree(*(char **)(cur->valp));
+ *(char **)(cur->valp) = estrdup(value);
+ break;
+ }
+ break;
+ }
}
-
}
- fclose(f);
+ fclose(fp);
if (!ldap_conf.host)
ldap_conf.host = estrdup("localhost");
if (ldap_conf.debug > 1) {
fprintf(stderr, "LDAP Config Summary\n");
fprintf(stderr, "===================\n");
-#ifdef HAVE_LDAP_INITIALIZE
if (ldap_conf.uri) {
- fprintf(stderr, "uri %s\n", ldap_conf.uri);
- } else
-#endif
- {
- fprintf(stderr, "host %s\n", ldap_conf.host ?
+ fprintf(stderr, "uri %s\n", ldap_conf.uri);
+ } else {
+ fprintf(stderr, "host %s\n", ldap_conf.host ?
ldap_conf.host : "(NONE)");
- fprintf(stderr, "port %d\n", ldap_conf.port);
+ fprintf(stderr, "port %d\n", ldap_conf.port);
}
- fprintf(stderr, "ldap_version %d\n", ldap_conf.version);
+ fprintf(stderr, "ldap_version %d\n", ldap_conf.version);
- fprintf(stderr, "sudoers_base %s\n", ldap_conf.base ?
+ fprintf(stderr, "sudoers_base %s\n", ldap_conf.base ?
ldap_conf.base : "(NONE) <---Sudo will ignore ldap)");
- fprintf(stderr, "binddn %s\n", ldap_conf.binddn ?
+ fprintf(stderr, "binddn %s\n", ldap_conf.binddn ?
ldap_conf.binddn : "(anonymous)");
- fprintf(stderr, "bindpw %s\n", ldap_conf.bindpw ?
+ fprintf(stderr, "bindpw %s\n", ldap_conf.bindpw ?
ldap_conf.bindpw : "(anonymous)");
- fprintf(stderr, "bind_timelimit %d\n", ldap_conf.bind_timelimit);
- fprintf(stderr, "timelimit %d\n", ldap_conf.timelimit);
-#ifdef HAVE_LDAP_START_TLS_S
- fprintf(stderr, "ssl %s\n", ldap_conf.ssl ?
+ if (ldap_conf.bind_timelimit > 0)
+ fprintf(stderr, "bind_timelimit %d\n", ldap_conf.bind_timelimit);
+ if (ldap_conf.timelimit > 0)
+ fprintf(stderr, "timelimit %d\n", ldap_conf.timelimit);
+ fprintf(stderr, "ssl %s\n", ldap_conf.ssl ?
ldap_conf.ssl : "(no)");
+ if (ldap_conf.tls_checkpeer != -1)
+ fprintf(stderr, "tls_checkpeer %s\n", ldap_conf.tls_checkpeer ?
+ "(yes)" : "(no)");
+ if (ldap_conf.tls_cacertfile != NULL)
+ fprintf(stderr, "tls_cacertfile %s\n", ldap_conf.tls_cacertfile);
+ if (ldap_conf.tls_cacertdir != NULL)
+ fprintf(stderr, "tls_cacertdir %s\n", ldap_conf.tls_cacertdir);
+ if (ldap_conf.tls_random_file != NULL)
+ fprintf(stderr, "tls_random_file %s\n", ldap_conf.tls_random_file);
+ if (ldap_conf.tls_cipher_suite != NULL)
+ fprintf(stderr, "tls_cipher_suite %s\n", ldap_conf.tls_cipher_suite);
+ if (ldap_conf.tls_certfile != NULL)
+ fprintf(stderr, "tls_certfile %s\n", ldap_conf.tls_certfile);
+ if (ldap_conf.tls_keyfile != NULL)
+ fprintf(stderr, "tls_keyfile %s\n", ldap_conf.tls_keyfile);
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+ if (ldap_conf.use_sasl != -1) {
+ fprintf(stderr, "use_sasl %s\n",
+ ldap_conf.use_sasl ? "yes" : "no");
+ fprintf(stderr, "sasl_auth_id %s\n", ldap_conf.sasl_auth_id ?
+ ldap_conf.sasl_auth_id : "(NONE)");
+ fprintf(stderr, "rootuse_sasl %d\n", ldap_conf.rootuse_sasl);
+ fprintf(stderr, "rootsasl_auth_id %s\n", ldap_conf.rootsasl_auth_id ?
+ ldap_conf.rootsasl_auth_id : "(NONE)");
+ fprintf(stderr, "sasl_secprops %s\n", ldap_conf.sasl_secprops ?
+ ldap_conf.sasl_secprops : "(NONE)");
+ fprintf(stderr, "krb5_ccname %s\n", ldap_conf.krb5_ccname ?
+ ldap_conf.krb5_ccname : "(NONE)");
+ }
#endif
fprintf(stderr, "===================\n");
}
if (!ldap_conf.base)
return(FALSE); /* if no base is defined, ignore LDAP */
+ /*
+ * Interpret SSL option
+ */
+ if (ldap_conf.ssl != NULL) {
+ if (strcasecmp(ldap_conf.ssl, "start_tls") == 0)
+ ldap_conf.ssl_mode = SUDO_LDAP_STARTTLS;
+ else if (_atobool(ldap_conf.ssl))
+ ldap_conf.ssl_mode = SUDO_LDAP_SSL;
+ }
+
+#if defined(HAVE_LDAPSSL_SET_STRENGTH) && !defined(LDAP_OPT_X_TLS_REQUIRE_CERT)
+ if (ldap_conf.tls_checkpeer != -1) {
+ ldapssl_set_strength(NULL,
+ ldap_conf.tls_checkpeer ? LDAPSSL_AUTH_CERT : LDAPSSL_AUTH_WEAK);
+ }
+#endif
+
+#ifndef HAVE_LDAP_INITIALIZE
+ /* Convert uri list to host list if no ldap_initialize(). */
+ if (ldap_conf.uri) {
+ if (sudo_ldap_parse_uri(ldap_conf.uri) != 0)
+ return(FALSE);
+ free(ldap_conf.uri);
+ ldap_conf.uri = NULL;
+ ldap_conf.port = LDAP_PORT;
+ }
+#endif
+
+ if (!ldap_conf.uri) {
+ /* Use port 389 for plaintext LDAP and port 636 for SSL LDAP */
+ if (ldap_conf.port < 0)
+ ldap_conf.port =
+ ldap_conf.ssl_mode == SUDO_LDAP_SSL ? LDAPS_PORT : LDAP_PORT;
+
+#ifdef HAVE_LDAP_CREATE
+ /*
+ * Cannot specify port directly to ldap_create(), each host must
+ * include :port to override the default.
+ */
+ if (ldap_conf.port != LDAP_PORT)
+ sudo_ldap_conf_add_ports();
+#endif
+ }
+
/* If rootbinddn set, read in /etc/ldap.secret if it exists. */
- if (ldap_conf.rootbinddn) {
- if ((f = fopen(_PATH_LDAP_SECRET, "r")) != NULL) {
- if (fgets(buf, sizeof(buf), f) != NULL) {
- /* removing trailing newlines */
- for (c = buf; *c != '\0'; c++)
- continue;
- while (--c > buf && *c == '\n')
- *c = '\0';
- /* copy to bindpw and binddn */
- efree(ldap_conf.bindpw);
- ldap_conf.bindpw = estrdup(buf);
- efree(ldap_conf.binddn);
- ldap_conf.binddn = ldap_conf.rootbinddn;
- ldap_conf.rootbinddn = NULL;
+ if (ldap_conf.rootbinddn)
+ sudo_ldap_read_secret(_PATH_LDAP_SECRET);
+
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+ /*
+ * Make sure we can open the file specified by krb5_ccname.
+ */
+ if (ldap_conf.krb5_ccname != NULL) {
+ if (strncasecmp(ldap_conf.krb5_ccname, "FILE:", 5) == 0 ||
+ strncasecmp(ldap_conf.krb5_ccname, "WRFILE:", 7) == 0) {
+ value = ldap_conf.krb5_ccname +
+ (ldap_conf.krb5_ccname[4] == ':' ? 5 : 7);
+ if ((fp = fopen(value, "r")) != NULL) {
+ DPRINTF(("using krb5 credential cache: %s", value), 1);
+ fclose(fp);
+ } else {
+ /* Can't open it, just ignore the entry. */
+ DPRINTF(("unable to open krb5 credential cache: %s", value), 1);
+ efree(ldap_conf.krb5_ccname);
+ ldap_conf.krb5_ccname = NULL;
}
- fclose(f);
}
}
+#endif
return(TRUE);
}
/*
- * like perl's join(sep,@ARGS)
+ * Extract the dn from an entry and return the first rdn from it.
*/
-char *
- _ldap_join_values(sep, v)
- char *sep;
- char **v;
+static char *
+sudo_ldap_get_first_rdn(ld, entry)
+ LDAP *ld;
+ LDAPMessage *entry;
{
- char *b = NULL, **p = NULL;
- size_t sz = 0;
-
- /* paste values together */
- for (p = v; p && *p; p++) {
- if (p != v && sep != NULL)
- ncat(&b, &sz, sep); /* append seperator */
- ncat(&b, &sz, *p); /* append value */
- }
+#ifdef HAVE_LDAP_STR2DN
+ char *dn, *rdn = NULL;
+ LDAPDN tmpDN;
- /* sanity check */
- if (b[0] == '\0') {
- /* something went wrong, put something here */
- ncat(&b, &sz, "(empty list)"); /* append value */
+ if ((dn = ldap_get_dn(ld, entry)) == NULL)
+ return(NULL);
+ if (ldap_str2dn(dn, &tmpDN, LDAP_DN_FORMAT_LDAP) == LDAP_SUCCESS) {
+ ldap_rdn2str(tmpDN[0], &rdn, LDAP_DN_FORMAT_UFN);
+ ldap_dnfree(tmpDN);
}
+ ldap_memfree(dn);
+ return(rdn);
+#else
+ char *dn, **edn;
+
+ if ((dn = ldap_get_dn(ld, entry)) == NULL)
+ return(NULL);
+ edn = ldap_explode_dn(dn, 1);
+ ldap_memfree(dn);
+ return(edn ? edn[0] : NULL);
+#endif
+}
- return(b);
+/*
+ * Fetch and display the global Options.
+ */
+int
+sudo_ldap_display_defaults(nss, pw, lbuf)
+ struct sudo_nss *nss;
+ struct passwd *pw;
+ struct lbuf *lbuf;
+{
+ struct berval **bv, **p;
+ LDAP *ld = (LDAP *) nss->handle;
+ LDAPMessage *entry = NULL, *result = NULL;
+ char *prefix = NULL;
+ int rc, count = 0;
+
+ if (ld == NULL)
+ return(-1);
+
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE,
+ "cn=defaults", NULL, 0, NULL, NULL, NULL, -1, &result);
+ if (rc == LDAP_SUCCESS && (entry = ldap_first_entry(ld, result))) {
+ bv = ldap_get_values_len(ld, entry, "sudoOption");
+ if (bv != NULL) {
+ if (lbuf->len == 0)
+ prefix = " ";
+ else
+ prefix = ", ";
+ for (p = bv; *p != NULL; p++) {
+ lbuf_append(lbuf, prefix, (*p)->bv_val, NULL);
+ prefix = ", ";
+ count++;
+ }
+ ldap_value_free_len(bv);
+ }
+ }
+ if (result)
+ ldap_msgfree(result);
+ return(count);
}
-char *sudo_ldap_cm_list = NULL;
-size_t sudo_ldap_cm_list_size;
+/*
+ * STUB
+ */
+int
+sudo_ldap_display_bound_defaults(nss, pw, lbuf)
+ struct sudo_nss *nss;
+ struct passwd *pw;
+ struct lbuf *lbuf;
+{
+ return(1);
+}
-#define SAVE_LIST(x) ncat(&sudo_ldap_cm_list,&sudo_ldap_cm_list_size,(x))
/*
- * Walks through search result and returns TRUE if we have a
- * command match
+ * Print a record in the short form, ala file sudoers.
*/
int
-sudo_ldap_add_match(ld, entry, pwflag)
+sudo_ldap_display_entry_short(ld, entry, lbuf)
LDAP *ld;
LDAPMessage *entry;
- int pwflag;
+ struct lbuf *lbuf;
{
- char *dn, **edn, **v = NULL;
-
- /* if we are not collecting matches, then don't save them */
- if (pwflag != I_LISTPW)
- return(TRUE);
-
- /* collect the dn, only show the rdn */
- dn = ldap_get_dn(ld, entry);
- edn = dn ? ldap_explode_dn(dn, 1) : NULL;
- SAVE_LIST("\nLDAP Role: ");
- SAVE_LIST((edn && *edn) ? *edn : "UNKNOWN");
- SAVE_LIST("\n");
- if (dn)
- ldap_memfree(dn);
- if (edn)
- ldap_value_free(edn);
-
- /* get the Runas Values from the entry */
- v = ldap_get_values(ld, entry, "sudoRunAs");
- if (v && *v) {
- SAVE_LIST(" RunAs: (");
- SAVE_LIST(_ldap_join_values(", ", v));
- SAVE_LIST(")\n");
+ struct berval **bv, **p;
+ int count = 0;
+
+ lbuf_append(lbuf, " (", NULL);
+
+ /* get the RunAsUser Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsUser");
+ if (bv == NULL)
+ bv = ldap_get_values_len(ld, entry, "sudoRunAs");
+ if (bv != NULL) {
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ }
+ ldap_value_free_len(bv);
+ } else
+ lbuf_append(lbuf, def_runas_default, NULL);
+
+ /* get the RunAsGroup Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsGroup");
+ if (bv != NULL) {
+ lbuf_append(lbuf, " : ", NULL);
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ }
+ ldap_value_free_len(bv);
+ }
+ lbuf_append(lbuf, ") ", NULL);
+
+ /* get the Option Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoOption");
+ if (bv != NULL) {
+ char *cp, *tag;
+
+ for (p = bv; *p != NULL; p++) {
+ cp = (*p)->bv_val;
+ if (*cp == '!')
+ cp++;
+ tag = NULL;
+ if (strcmp(cp, "authenticate") == 0)
+ tag = (*p)->bv_val[0] == '!' ?
+ "NOPASSWD: " : "PASSWD: ";
+ else if (strcmp(cp, "noexec") == 0)
+ tag = (*p)->bv_val[0] == '!' ?
+ "EXEC: " : "NOEXEC: ";
+ else if (strcmp(cp, "setenv") == 0)
+ tag = (*p)->bv_val[0] == '!' ?
+ "NOSETENV: " : "SETENV: ";
+ if (tag != NULL)
+ lbuf_append(lbuf, tag, NULL);
+ /* XXX - ignores other options */
+ }
+ ldap_value_free_len(bv);
}
- if (v)
- ldap_value_free(v);
/* get the Command Values from the entry */
- v = ldap_get_values(ld, entry, "sudoCommand");
- if (v && *v) {
- SAVE_LIST(" Commands:\n ");
- SAVE_LIST(_ldap_join_values("\n ", v));
- SAVE_LIST("\n");
- } else {
- SAVE_LIST(" Commands: NONE\n");
+ bv = ldap_get_values_len(ld, entry, "sudoCommand");
+ if (bv != NULL) {
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ count++;
+ }
+ ldap_value_free_len(bv);
}
- if (v)
- ldap_value_free(v);
- return(FALSE); /* Don't stop at the first match */
+ lbuf_print(lbuf); /* forces a newline */
+ return(count);
}
-#undef SAVE_LIST
-void
-sudo_ldap_list_matches()
+/*
+ * Print a record in the long form.
+ */
+int
+sudo_ldap_display_entry_long(ld, entry, lbuf)
+ LDAP *ld;
+ LDAPMessage *entry;
+ struct lbuf *lbuf;
{
- if (sudo_ldap_cm_list != NULL)
- printf("%s", sudo_ldap_cm_list);
-}
+ struct berval **bv, **p;
+ char *rdn;
+ int count = 0;
+
+ /* extract the dn, only show the first rdn */
+ rdn = sudo_ldap_get_first_rdn(ld, entry);
+ lbuf_print(lbuf); /* force a newline */
+ lbuf_append(lbuf, "LDAP Role: ", rdn ? rdn : "UNKNOWN", NULL);
+ lbuf_print(lbuf);
+ if (rdn)
+ ldap_memfree(rdn);
+
+ /* get the RunAsUser Values from the entry */
+ lbuf_append(lbuf, " RunAsUsers: ", NULL);
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsUser");
+ if (bv == NULL)
+ bv = ldap_get_values_len(ld, entry, "sudoRunAs");
+ if (bv != NULL) {
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ }
+ ldap_value_free_len(bv);
+ } else
+ lbuf_append(lbuf, def_runas_default, NULL);
+ lbuf_print(lbuf);
+
+ /* get the RunAsGroup Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoRunAsGroup");
+ if (bv != NULL) {
+ lbuf_append(lbuf, " RunAsGroups: ", NULL);
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ }
+ ldap_value_free_len(bv);
+ lbuf_print(lbuf);
+ }
-/* macros to set option, error on failure plus consistent debugging */
-#define SET_OPTS(opt, val) do { \
- if (ldap_conf.val != NULL) { \
- if (ldap_conf.debug > 1) \
- fprintf(stderr, \
- "ldap_set_option(LDAP_OPT_%s, \"%s\")\n", #opt, ldap_conf.val);\
- rc = ldap_set_option(ld, LDAP_OPT_ ## opt, ldap_conf.val); \
- if (rc != LDAP_OPT_SUCCESS) { \
- fprintf(stderr,"ldap_set_option(LDAP_OPT_%s, \"%s\")=%d: %s\n", \
- #opt, ldap_conf.val, rc, ldap_err2string(rc)); \
- return(NULL); \
- } \
- } \
-} while(0)
-#define SET_OPTI(opt, val) do { \
- if (ldap_conf.val >= 0) { \
- if (ldap_conf.debug > 1) \
- fprintf(stderr, \
- "ldap_set_option(LDAP_OPT_%s, %d)\n", #opt, ldap_conf.val); \
- rc = ldap_set_option(ld, LDAP_OPT_ ## opt, &ldap_conf.val); \
- if (rc != LDAP_OPT_SUCCESS) { \
- fprintf(stderr,"ldap_set_option(LDAP_OPT_%s, %d)=%d: %s\n", \
- #opt, ldap_conf.val, rc, ldap_err2string(rc)); \
- return(NULL); \
- } \
- } \
-} while(0)
+ /* get the Option Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoOption");
+ if (bv != NULL) {
+ lbuf_append(lbuf, " Options: ", NULL);
+ for (p = bv; *p != NULL; p++) {
+ if (p != bv)
+ lbuf_append(lbuf, ", ", NULL);
+ lbuf_append(lbuf, (*p)->bv_val, NULL);
+ }
+ ldap_value_free_len(bv);
+ lbuf_print(lbuf);
+ }
+
+ /* get the Command Values from the entry */
+ bv = ldap_get_values_len(ld, entry, "sudoCommand");
+ if (bv != NULL) {
+ lbuf_append(lbuf, " Commands:", NULL);
+ lbuf_print(lbuf);
+ for (p = bv; *p != NULL; p++) {
+ lbuf_append(lbuf, "\t", (*p)->bv_val, NULL);
+ lbuf_print(lbuf);
+ count++;
+ }
+ ldap_value_free_len(bv);
+ }
+
+ return(count);
+}
/*
- * Open a connection to the LDAP server.
+ * Like sudo_ldap_lookup(), except we just print entries.
*/
-static LDAP *
-sudo_ldap_open()
+int
+sudo_ldap_display_privs(nss, pw, lbuf)
+ struct sudo_nss *nss;
+ struct passwd *pw;
+ struct lbuf *lbuf;
{
- LDAP *ld = NULL;
- int rc;
+ LDAP *ld = (LDAP *) nss->handle;
+ LDAPMessage *entry = NULL, *result = NULL;
+ char *filt;
+ int rc, do_netgr, count = 0;
- if (!sudo_ldap_read_config())
- return(NULL);
+ if (ld == NULL)
+ return(-1);
- /* attempt to setup ssl options */
-#ifdef LDAP_OPT_X_TLS_CACERTFILE
- SET_OPTS(X_TLS_CACERTFILE, tls_cacertfile);
-#endif /* LDAP_OPT_X_TLS_CACERTFILE */
+ /*
+ * Okay - time to search for anything that matches this user
+ * Lets limit it to only two queries of the LDAP server
+ *
+ * The first pass will look by the username, groups, and
+ * the keyword ALL. We will then inspect the results that
+ * came back from the query. We don't need to inspect the
+ * sudoUser in this pass since the LDAP server already scanned
+ * it for us.
+ *
+ * The second pass will return all the entries that contain
+ * user netgroups. Then we take the netgroups returned and
+ * try to match them against the username.
+ */
+ for (do_netgr = 0; do_netgr < 2; do_netgr++) {
+ filt = do_netgr ? estrdup("sudoUser=+*") : sudo_ldap_build_pass1(pw);
+ DPRINTF(("ldap search '%s'", filt), 1);
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE, filt,
+ NULL, 0, NULL, NULL, NULL, -1, &result);
+ efree(filt);
+ if (rc != LDAP_SUCCESS)
+ continue; /* no entries for this pass */
+
+ /* print each matching entry */
+ LDAP_FOREACH(entry, ld, result) {
+ if ((!do_netgr ||
+ sudo_ldap_check_user_netgroup(ld, entry, pw->pw_name)) &&
+ sudo_ldap_check_host(ld, entry)) {
+
+ if (long_list)
+ count += sudo_ldap_display_entry_long(ld, entry, lbuf);
+ else
+ count += sudo_ldap_display_entry_short(ld, entry, lbuf);
+ }
+ }
+ ldap_msgfree(result);
+ result = NULL;
+ }
+ return(count);
+}
-#ifdef LDAP_OPT_X_TLS_CACERTDIR
- SET_OPTS(X_TLS_CACERTDIR, tls_cacertdir);
-#endif /* LDAP_OPT_X_TLS_CACERTDIR */
+int
+sudo_ldap_display_cmnd(nss, pw)
+ struct sudo_nss *nss;
+ struct passwd *pw;
+{
+ LDAP *ld = (LDAP *) nss->handle;
+ LDAPMessage *entry = NULL, *result = NULL; /* used for searches */
+ char *filt; /* used to parse attributes */
+ int rc, found, do_netgr; /* temp/final return values */
-#ifdef LDAP_OPT_X_TLS_CERTFILE
- SET_OPTS(X_TLS_CERTFILE, tls_certfile);
-#endif /* LDAP_OPT_X_TLS_CERTFILE */
+ if (ld == NULL)
+ return(1);
-#ifdef LDAP_OPT_X_TLS_KEYFILE
- SET_OPTS(X_TLS_KEYFILE, tls_keyfile);
-#endif /* LDAP_OPT_X_TLS_KEYFILE */
+ /*
+ * Okay - time to search for anything that matches this user
+ * Lets limit it to only two queries of the LDAP server
+ *
+ * The first pass will look by the username, groups, and
+ * the keyword ALL. We will then inspect the results that
+ * came back from the query. We don't need to inspect the
+ * sudoUser in this pass since the LDAP server already scanned
+ * it for us.
+ *
+ * The second pass will return all the entries that contain
+ * user netgroups. Then we take the netgroups returned and
+ * try to match them against the username.
+ */
+ for (found = FALSE, do_netgr = 0; !found && do_netgr < 2; do_netgr++) {
+ filt = do_netgr ? estrdup("sudoUser=+*") : sudo_ldap_build_pass1(pw);
+ DPRINTF(("ldap search '%s'", filt), 1);
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE, filt,
+ NULL, 0, NULL, NULL, NULL, -1, &result);
+ efree(filt);
+ if (rc != LDAP_SUCCESS)
+ continue; /* no entries for this pass */
-#ifdef LDAP_OPT_X_TLS_CIPHER_SUITE
- SET_OPTS(X_TLS_CIPHER_SUITE, tls_cipher_suite);
-#endif /* LDAP_OPT_X_TLS_CIPHER_SUITE */
+ LDAP_FOREACH(entry, ld, result) {
+ if ((!do_netgr ||
+ sudo_ldap_check_user_netgroup(ld, entry, pw->pw_name)) &&
+ sudo_ldap_check_host(ld, entry) &&
+ sudo_ldap_check_command(ld, entry, NULL) &&
+ sudo_ldap_check_runas(ld, entry)) {
-#ifdef LDAP_OPT_X_TLS_RANDOM_FILE
- SET_OPTS(X_TLS_RANDOM_FILE, tls_random_file);
-#endif /* LDAP_OPT_X_TLS_RANDOM_FILE */
+ found = TRUE;
+ break;
+ }
+ }
+ ldap_msgfree(result);
+ result = NULL;
+ }
-#ifdef LDAP_OPT_X_TLS_REQUIRE_CERT
- /* check the server certificate? */
- SET_OPTI(X_TLS_REQUIRE_CERT, tls_checkpeer);
-#endif /* LDAP_OPT_X_TLS_REQUIRE_CERT */
+ if (found)
+ printf("%s%s%s\n", safe_cmnd ? safe_cmnd : user_cmnd,
+ user_args ? " " : "", user_args ? user_args : "");
+ return(!found);
+}
+
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+static int
+sudo_ldap_sasl_interact(ld, flags, _auth_id, _interact)
+ LDAP *ld;
+ unsigned int flags;
+ void *_auth_id;
+ void *_interact;
+{
+ char *auth_id = (char *)_auth_id;
+ sasl_interact_t *interact = (sasl_interact_t *)_interact;
+
+ for (; interact->id != SASL_CB_LIST_END; interact++) {
+ if (interact->id != SASL_CB_USER)
+ return(LDAP_PARAM_ERROR);
+
+ if (auth_id != NULL)
+ interact->result = auth_id;
+ else if (interact->defresult != NULL)
+ interact->result = interact->defresult;
+ else
+ interact->result = "";
+
+ interact->len = strlen(interact->result);
+#if SASL_VERSION_MAJOR < 2
+ interact->result = estrdup(interact->result);
+#endif /* SASL_VERSION_MAJOR < 2 */
+ }
+ return(LDAP_SUCCESS);
+}
+#endif /* HAVE_LDAP_SASL_INTERACTIVE_BIND_S */
+
+/*
+ * Set LDAP options based on the config table.
+ */
+int
+sudo_ldap_set_options(ld)
+ LDAP *ld;
+{
+ struct ldap_config_table *cur;
+ int rc;
+
+ /* Set ber options */
+#ifdef LBER_OPT_DEBUG_LEVEL
+ if (ldap_conf.ldap_debug)
+ ber_set_option(NULL, LBER_OPT_DEBUG_LEVEL, &ldap_conf.ldap_debug);
+#endif
- /* set timelimit options */
- SET_OPTI(TIMELIMIT, timelimit);
+ /* Set simple LDAP options */
+ for (cur = ldap_conf_table; cur->conf_str != NULL; cur++) {
+ LDAP *conn;
+ int ival;
+ char *sval;
+
+ if (cur->opt_val == -1)
+ continue;
+
+ conn = cur->connected ? ld : NULL;
+ switch (cur->type) {
+ case CONF_BOOL:
+ case CONF_INT:
+ ival = *(int *)(cur->valp);
+ if (ival >= 0) {
+ rc = ldap_set_option(conn, cur->opt_val, &ival);
+ if (rc != LDAP_OPT_SUCCESS) {
+ warningx("ldap_set_option: %s -> %d: %s",
+ cur->conf_str, ival, ldap_err2string(rc));
+ return(-1);
+ }
+ DPRINTF(("ldap_set_option: %s -> %d", cur->conf_str, ival), 1);
+ }
+ break;
+ case CONF_STR:
+ sval = *(char **)(cur->valp);
+ if (sval != NULL) {
+ rc = ldap_set_option(conn, cur->opt_val, sval);
+ if (rc != LDAP_OPT_SUCCESS) {
+ warningx("ldap_set_option: %s -> %s: %s",
+ cur->conf_str, sval, ldap_err2string(rc));
+ return(-1);
+ }
+ DPRINTF(("ldap_set_option: %s -> %s", cur->conf_str, sval), 1);
+ }
+ break;
+ }
+ }
#ifdef LDAP_OPT_NETWORK_TIMEOUT
+ /* Convert bind_timelimit to a timeval */
if (ldap_conf.bind_timelimit > 0) {
struct timeval tv;
tv.tv_sec = ldap_conf.bind_timelimit / 1000;
tv.tv_usec = 0;
- if (ldap_conf.debug > 1)
- fprintf(stderr, "ldap_set_option(LDAP_OPT_NETWORK_TIMEOUT, %ld)\n",
- tv.tv_sec);
rc = ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, &tv);
if (rc != LDAP_OPT_SUCCESS) {
- fprintf(stderr,"ldap_set_option(NETWORK_TIMEOUT, %ld)=%d: %s\n",
- tv.tv_sec, rc, ldap_err2string(rc));
- return(NULL);
+ warningx("ldap_set_option(NETWORK_TIMEOUT, %ld): %s",
+ (long)tv.tv_sec, ldap_err2string(rc));
+ return(-1);
}
+ DPRINTF(("ldap_set_option(LDAP_OPT_NETWORK_TIMEOUT, %ld)\n",
+ (long)tv.tv_sec), 1);
}
#endif
- /* attempt connect */
-#ifdef HAVE_LDAP_INITIALIZE
- if (ldap_conf.uri) {
+#if defined(LDAP_OPT_X_TLS) && !defined(HAVE_LDAPSSL_INIT)
+ if (ldap_conf.ssl_mode == SUDO_LDAP_SSL) {
+ int val = LDAP_OPT_X_TLS_HARD;
+ rc = ldap_set_option(ld, LDAP_OPT_X_TLS, &val);
+ if (rc != LDAP_SUCCESS) {
+ warningx("ldap_set_option(LDAP_OPT_X_TLS, LDAP_OPT_X_TLS_HARD): %s",
+ ldap_err2string(rc));
+ return(-1);
+ }
+ DPRINTF(("ldap_set_option(LDAP_OPT_X_TLS, LDAP_OPT_X_TLS_HARD)\n"), 1);
+ }
+#endif
+ return(0);
+}
- DPRINTF(("ldap_initialize(ld,%s)", ldap_conf.uri), 2);
+/*
+ * Connect to the LDAP server specified by ld
+ */
+static int
+sudo_ldap_bind_s(ld)
+ LDAP *ld;
+{
+ int rc;
+ const char *old_ccname = user_ccname;
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ unsigned int status;
+#endif
- rc = ldap_initialize(&ld, ldap_conf.uri);
- if (rc) {
- fprintf(stderr, "ldap_initialize()=%d : %s\n",
- rc, ldap_err2string(rc));
- return(NULL);
+#ifdef HAVE_LDAP_SASL_INTERACTIVE_BIND_S
+ if (ldap_conf.rootuse_sasl == TRUE ||
+ (ldap_conf.rootuse_sasl != FALSE && ldap_conf.use_sasl == TRUE)) {
+ void *auth_id = ldap_conf.rootsasl_auth_id ?
+ ldap_conf.rootsasl_auth_id : ldap_conf.sasl_auth_id;
+
+ if (ldap_conf.krb5_ccname != NULL) {
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ if (gss_krb5_ccache_name(&status, ldap_conf.krb5_ccname, &old_ccname)
+ != GSS_S_COMPLETE) {
+ old_ccname = NULL;
+ DPRINTF(("gss_krb5_ccache_name() failed: %d", status), 1);
+ }
+#else
+ sudo_setenv("KRB5CCNAME", ldap_conf.krb5_ccname, TRUE);
+#endif
+ }
+ rc = ldap_sasl_interactive_bind_s(ld, ldap_conf.binddn, "GSSAPI",
+ NULL, NULL, LDAP_SASL_QUIET, sudo_ldap_sasl_interact, auth_id);
+ if (ldap_conf.krb5_ccname != NULL) {
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ if (gss_krb5_ccache_name(&status, old_ccname, NULL) != GSS_S_COMPLETE)
+ DPRINTF(("gss_krb5_ccache_name() failed: %d", status), 1);
+#else
+ if (old_ccname != NULL)
+ sudo_setenv("KRB5CCNAME", old_ccname, TRUE);
+ else
+ sudo_unsetenv("KRB5CCNAME");
+#endif
+ }
+ if (rc != LDAP_SUCCESS) {
+ warningx("ldap_sasl_interactive_bind_s(): %s", ldap_err2string(rc));
+ return(-1);
}
+ DPRINTF(("ldap_sasl_interactive_bind_s() ok"), 1);
} else
-#endif /* HAVE_LDAP_INITIALIZE */
- if (ldap_conf.host) {
+#endif /* HAVE_LDAP_SASL_INTERACTIVE_BIND_S */
+#ifdef HAVE_LDAP_SASL_BIND_S
+ {
+ struct berval bv;
- DPRINTF(("ldap_init(%s,%d)", ldap_conf.host, ldap_conf.port), 2);
+ bv.bv_val = ldap_conf.bindpw ? ldap_conf.bindpw : "";
+ bv.bv_len = strlen(bv.bv_val);
- if ((ld = ldap_init(ldap_conf.host, ldap_conf.port)) == NULL) {
- fprintf(stderr, "ldap_init(): errno=%d : %s\n",
- errno, strerror(errno));
- return(NULL);
+ rc = ldap_sasl_bind_s(ld, ldap_conf.binddn, LDAP_SASL_SIMPLE, &bv,
+ NULL, NULL, NULL);
+ if (rc != LDAP_SUCCESS) {
+ warningx("ldap_sasl_bind_s(): %s", ldap_err2string(rc));
+ return(-1);
}
+ DPRINTF(("ldap_sasl_bind_s() ok"), 1);
}
-#ifdef LDAP_OPT_PROTOCOL_VERSION
+#else
+ {
+ rc = ldap_simple_bind_s(ld, ldap_conf.binddn, ldap_conf.bindpw);
+ if (rc != LDAP_SUCCESS) {
+ warningx("ldap_simple_bind_s(): %s", ldap_err2string(rc));
+ return(-1);
+ }
+ DPRINTF(("ldap_simple_bind_s() ok"), 1);
+ }
+#endif
+ return(0);
+}
+
+/*
+ * Open a connection to the LDAP server.
+ * Returns 0 on success and non-zero on failure.
+ */
+int
+sudo_ldap_open(nss)
+ struct sudo_nss *nss;
+{
+ LDAP *ld;
+ int rc, ldapnoinit = FALSE;
- /* Set the LDAP Protocol version */
- SET_OPTI(PROTOCOL_VERSION, version);
+ if (!sudo_ldap_read_config())
+ return(-1);
-#endif /* LDAP_OPT_PROTOCOL_VERSION */
+ /* Prevent reading of user ldaprc and system defaults. */
+ if (getenv("LDAPNOINIT") == NULL) {
+ ldapnoinit = TRUE;
+ sudo_setenv("LDAPNOINIT", "1", TRUE);
+ }
+ /* Connect to LDAP server */
+#ifdef HAVE_LDAP_INITIALIZE
+ if (ldap_conf.uri != NULL) {
+ DPRINTF(("ldap_initialize(ld, %s)", ldap_conf.uri), 2);
+ rc = ldap_initialize(&ld, ldap_conf.uri);
+ } else
+#endif
+ rc = sudo_ldap_init(&ld, ldap_conf.host, ldap_conf.port);
+ if (rc != LDAP_SUCCESS) {
+ warningx("unable to initialize LDAP: %s", ldap_err2string(rc));
+ return(-1);
+ }
+
+ if (ldapnoinit)
+ sudo_unsetenv("LDAPNOINIT");
+
+ /* Set LDAP options */
+ if (sudo_ldap_set_options(ld) < 0)
+ return(-1);
+
+ if (ldap_conf.ssl_mode == SUDO_LDAP_STARTTLS) {
#ifdef HAVE_LDAP_START_TLS_S
- /* Turn on TLS */
- if (ldap_conf.ssl && !strcasecmp(ldap_conf.ssl, "start_tls")) {
rc = ldap_start_tls_s(ld, NULL, NULL);
if (rc != LDAP_SUCCESS) {
- fprintf(stderr, "ldap_start_tls_s(): %d: %s\n", rc,
- ldap_err2string(rc));
- ldap_unbind(ld);
- return(NULL);
+ warningx("ldap_start_tls_s(): %s", ldap_err2string(rc));
+ return(-1);
}
DPRINTF(("ldap_start_tls_s() ok"), 1);
- }
+#else
+ warningx("start_tls specified but LDAP libs do not support ldap_start_tls_s()");
#endif /* HAVE_LDAP_START_TLS_S */
+ }
/* Actually connect */
- if ((rc = ldap_simple_bind_s(ld, ldap_conf.binddn, ldap_conf.bindpw))) {
- fprintf(stderr, "ldap_simple_bind_s()=%d : %s\n",
- rc, ldap_err2string(rc));
- return(NULL);
- }
- DPRINTF(("ldap_bind() ok"), 1);
+ if (sudo_ldap_bind_s(ld) != 0)
+ return(-1);
- return(ld);
+ nss->handle = ld;
+ return(0);
}
-static void
-sudo_ldap_update_defaults(ld)
- LDAP *ld;
+int
+sudo_ldap_setdefs(nss)
+ struct sudo_nss *nss;
{
+ LDAP *ld = (LDAP *) nss->handle;
LDAPMessage *entry = NULL, *result = NULL; /* used for searches */
int rc; /* temp return value */
- rc = ldap_search_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE,
- "cn=defaults", NULL, 0, &result);
- if (!rc && (entry = ldap_first_entry(ld, result))) {
+ if (ld == NULL)
+ return(-1);
+
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE,
+ "cn=defaults", NULL, 0, NULL, NULL, NULL, -1, &result);
+ if (rc == 0 && (entry = ldap_first_entry(ld, result))) {
DPRINTF(("found:%s", ldap_get_dn(ld, entry)), 1);
sudo_ldap_parse_options(ld, entry);
} else
if (result)
ldap_msgfree(result);
+
+ return(0);
}
/*
* like sudoers_lookup() - only LDAP style
*/
int
-sudo_ldap_check(pwflag)
+sudo_ldap_lookup(nss, ret, pwflag)
+ struct sudo_nss *nss;
+ int ret;
int pwflag;
{
- LDAP *ld;
- LDAPMessage *entry = NULL, *result = NULL; /* used for searches */
- char *filt; /* used to parse attributes */
- int rc, ret = FALSE, do_netgr; /* temp/final return values */
- int ldap_user_matches = FALSE, ldap_host_matches = FALSE; /* flags */
+ LDAP *ld = (LDAP *) nss->handle;
+ LDAPMessage *entry = NULL, *result = NULL;
+ char *filt;
+ int do_netgr, rc, matched;
+ int setenv_implied;
+ int ldap_user_matches = FALSE, ldap_host_matches = FALSE;
+ struct passwd *pw = list_pw ? list_pw : sudo_user.pw;
+
+ if (ld == NULL)
+ return(ret);
- /* Open a connection to the LDAP server. */
- if ((ld = sudo_ldap_open()) == NULL)
- return(VALIDATE_ERROR);
+ if (pwflag) {
+ int doauth = UNSPEC;
+ enum def_tupple pwcheck =
+ (pwflag == -1) ? never : sudo_defs_table[pwflag].sd_un.tuple;
+
+ for (matched = 0, do_netgr = 0; !matched && do_netgr < 2; do_netgr++) {
+ filt = do_netgr ? estrdup("sudoUser=+*") : sudo_ldap_build_pass1(pw);
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE, filt,
+ NULL, 0, NULL, NULL, NULL, -1, &result);
+ efree(filt);
+ if (rc != LDAP_SUCCESS)
+ continue;
+
+ LDAP_FOREACH(entry, ld, result) {
+ /* only verify netgroup matches in pass 2 */
+ if (do_netgr && !sudo_ldap_check_user_netgroup(ld, entry, pw->pw_name))
+ continue;
- /* Parse Default options. */
- sudo_ldap_update_defaults(ld);
+ ldap_user_matches = TRUE;
+ if (sudo_ldap_check_host(ld, entry)) {
+ ldap_host_matches = TRUE;
+ if ((pwcheck == any && doauth != FALSE) ||
+ (pwcheck == all && doauth == FALSE))
+ doauth = sudo_ldap_check_bool(ld, entry, "authenticate");
+ /* Only check the command when listing another user. */
+ if (user_uid == 0 || list_pw == NULL ||
+ user_uid == list_pw->pw_uid ||
+ sudo_ldap_check_command(ld, entry, NULL)) {
+ matched = 1;
+ break; /* end foreach */
+ }
+ }
+ }
+ ldap_msgfree(result);
+ result = NULL;
+ }
+ if (matched || user_uid == 0) {
+ SET(ret, VALIDATE_OK);
+ CLR(ret, VALIDATE_NOT_OK);
+ if (def_authenticate) {
+ switch (pwcheck) {
+ case always:
+ SET(ret, FLAG_CHECK_USER);
+ break;
+ case all:
+ case any:
+ if (doauth == FALSE)
+ def_authenticate = FALSE;
+ break;
+ case never:
+ def_authenticate = FALSE;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ goto done;
+ }
/*
* Okay - time to search for anything that matches this user
* user netgroups. Then we take the netgroups returned and
* try to match them against the username.
*/
-
- for (do_netgr = 0; !ret && do_netgr < 2; do_netgr++) {
- filt = do_netgr ? estrdup("sudoUser=+*") : sudo_ldap_build_pass1();
+ setenv_implied = FALSE;
+ for (matched = 0, do_netgr = 0; !matched && do_netgr < 2; do_netgr++) {
+ filt = do_netgr ? estrdup("sudoUser=+*") : sudo_ldap_build_pass1(pw);
DPRINTF(("ldap search '%s'", filt), 1);
- rc = ldap_search_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE, filt,
- NULL, 0, &result);
- if (rc)
+ rc = ldap_search_ext_s(ld, ldap_conf.base, LDAP_SCOPE_SUBTREE, filt,
+ NULL, 0, NULL, NULL, NULL, -1, &result);
+ if (rc != LDAP_SUCCESS)
DPRINTF(("nothing found for '%s'", filt), 1);
efree(filt);
/* parse each entry returned from this most recent search */
- entry = rc ? NULL : ldap_first_entry(ld, result);
- while (entry != NULL) {
- DPRINTF(("found:%s", ldap_get_dn(ld, entry)), 1);
- if (
- /* first verify user netgroup matches - only if in pass 2 */
- (!do_netgr || sudo_ldap_check_user_netgroup(ld, entry)) &&
- /* remember that user matched */
- (ldap_user_matches = -1) &&
- /* verify host match */
- sudo_ldap_check_host(ld, entry) &&
- /* remember that host matched */
- (ldap_host_matches = -1) &&
- /* add matches for listing later */
- sudo_ldap_add_match(ld, entry, pwflag) &&
- /* verify command match */
- sudo_ldap_check_command(ld, entry) &&
- /* verify runas match */
- sudo_ldap_check_runas(ld, entry)
- ) {
- /* We have a match! */
- DPRINTF(("Perfect Matched!"), 1);
- /* pick up any options */
- sudo_ldap_parse_options(ld, entry);
- /* make sure we don't reenter loop */
- ret = VALIDATE_OK;
- /* break from inside for loop */
- break;
+ if (rc == LDAP_SUCCESS) {
+ LDAP_FOREACH(entry, ld, result) {
+ DPRINTF(("found:%s", ldap_get_dn(ld, entry)), 1);
+ if (
+ /* first verify user netgroup matches - only if in pass 2 */
+ (!do_netgr || sudo_ldap_check_user_netgroup(ld, entry, pw->pw_name)) &&
+ /* remember that user matched */
+ (ldap_user_matches = TRUE) &&
+ /* verify host match */
+ sudo_ldap_check_host(ld, entry) &&
+ /* remember that host matched */
+ (ldap_host_matches = TRUE) &&
+ /* verify runas match */
+ sudo_ldap_check_runas(ld, entry) &&
+ /* verify command match */
+ (rc = sudo_ldap_check_command(ld, entry, &setenv_implied)) != UNSPEC
+ ) {
+ /* We have a match! */
+ DPRINTF(("Command %sallowed", rc == TRUE ? "" : "NOT "), 1);
+ matched = TRUE;
+ if (rc == TRUE) {
+ /* pick up any options */
+ if (setenv_implied)
+ def_setenv = TRUE;
+ sudo_ldap_parse_options(ld, entry);
+#ifdef HAVE_SELINUX
+ /* Set role and type if not specified on command line. */
+ if (user_role == NULL)
+ user_role = def_role;
+ if (user_type == NULL)
+ user_type = def_type;
+#endif /* HAVE_SELINUX */
+ /* make sure we don't reenter loop */
+ SET(ret, VALIDATE_OK);
+ CLR(ret, VALIDATE_NOT_OK);
+ } else {
+ SET(ret, VALIDATE_NOT_OK);
+ CLR(ret, VALIDATE_OK);
+ }
+ /* break from inside for loop */
+ break;
+ }
}
- entry = ldap_next_entry(ld, entry);
- }
- if (result)
ldap_msgfree(result);
- result = NULL;
+ result = NULL;
+ }
}
- sudo_ldap_close(ld); /* shut down connection */
-
+done:
DPRINTF(("user_matches=%d", ldap_user_matches), 1);
DPRINTF(("host_matches=%d", ldap_host_matches), 1);
- /* Check for special case for -v, -k, -l options */
- if (pwflag && ldap_user_matches && ldap_host_matches) {
- /*
- * Handle verifypw & listpw
- *
- * To be extra paranoid, since we haven't read any NOPASSWD options
- * in /etc/sudoers yet, but we have to make the decission now, lets
- * assume the worst and prefer to prompt for password unless the setting
- * is "never". (example verifypw=never or listpw=never)
- *
- */
- ret = VALIDATE_OK;
- if (pwflag == -1) {
- SET(ret, FLAG_NOPASS); /* -k or -K */
- } else {
- switch (sudo_defs_table[pwflag].sd_un.tuple) {
- case never:
- SET(ret, FLAG_NOPASS);
- break;
- case always:
- if (def_authenticate)
- SET(ret, FLAG_CHECK_USER);
- break;
- default:
- break;
- }
- }
- }
- if (ISSET(ret, VALIDATE_OK)) {
- /* we have a match, should we check the password? */
- if (!def_authenticate)
- SET(ret, FLAG_NOPASS);
- if (def_noexec)
- SET(ret, FLAG_NOEXEC);
- if (def_setenv)
- SET(ret, FLAG_SETENV);
- } else {
+ if (!ISSET(ret, VALIDATE_OK)) {
/* we do not have a match */
- ret = VALIDATE_NOT_OK;
- if (pwflag)
+ if (pwflag && list_pw == NULL)
SET(ret, FLAG_NO_CHECK);
- else if (!ldap_user_matches)
- SET(ret, FLAG_NO_USER);
- else if (!ldap_host_matches)
- SET(ret, FLAG_NO_HOST);
}
- DPRINTF(("sudo_ldap_check(%d)=0x%02x", pwflag, ret), 1);
+ if (ldap_user_matches)
+ CLR(ret, FLAG_NO_USER);
+ if (ldap_host_matches)
+ CLR(ret, FLAG_NO_HOST);
+ DPRINTF(("sudo_ldap_lookup(%d)=0x%02x", pwflag, ret), 1);
return(ret);
}
/*
* shut down LDAP connection
*/
-static void
-sudo_ldap_close(LDAP *ld)
+int
+sudo_ldap_close(nss)
+ struct sudo_nss *nss;
+{
+ if (nss->handle != NULL) {
+ ldap_unbind_ext_s((LDAP *) nss->handle, NULL, NULL);
+ nss->handle = NULL;
+ }
+ return(0);
+}
+
+/*
+ * STUB
+ */
+int
+sudo_ldap_parse(nss)
+ struct sudo_nss *nss;
{
- if (ld)
- ldap_unbind_s(ld);
+ return(0);
}
projects / debian / sudo / blobdiff