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-rw-r--r--servers/slapd/overlays/homedir.c2074
1 files changed, 2074 insertions, 0 deletions
diff --git a/servers/slapd/overlays/homedir.c b/servers/slapd/overlays/homedir.c
new file mode 100644
index 0000000..159090e
--- /dev/null
+++ b/servers/slapd/overlays/homedir.c
@@ -0,0 +1,2074 @@
+/* homedir.c - create/remove user home directories */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2009-2022 The OpenLDAP Foundation.
+ * Portions copyright 2009-2010 Symas Corporation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Emily Backes at Symas
+ * Corp. for inclusion in OpenLDAP Software.
+ */
+
+#include "portable.h"
+
+#ifdef SLAPD_OVER_HOMEDIR
+
+#define _FILE_OFFSET_BITS 64
+
+#include <stdio.h>
+#include <fcntl.h>
+
+#include <ac/string.h>
+#include <ac/ctype.h>
+#include <ac/errno.h>
+#include <sys/stat.h>
+#include <ac/unistd.h>
+#include <ac/dirent.h>
+#include <ac/time.h>
+
+#include "slap.h"
+#include "slap-config.h"
+
+#define DEFAULT_MIN_UID ( 100 )
+#define DEFAULT_SKEL ( LDAP_DIRSEP "etc" LDAP_DIRSEP "skel" )
+
+typedef struct homedir_regexp {
+ char *match;
+ char *replace;
+ regex_t compiled;
+ struct homedir_regexp *next;
+} homedir_regexp;
+
+typedef enum {
+ DEL_IGNORE,
+ DEL_DELETE,
+ DEL_ARCHIVE
+} delete_style;
+
+typedef struct homedir_data {
+ char *skeleton_path;
+ unsigned min_uid;
+ AttributeDescription *home_ad;
+ AttributeDescription *uidn_ad;
+ AttributeDescription *gidn_ad;
+ homedir_regexp *regexps;
+ delete_style style;
+ char *archive_path;
+} homedir_data;
+
+typedef struct homedir_cb_data {
+ slap_overinst *on;
+ Entry *entry;
+} homedir_cb_data;
+
+typedef struct name_list {
+ char *name;
+ struct stat st;
+ struct name_list *next;
+} name_list;
+
+typedef struct name_list_list {
+ name_list *list;
+ struct name_list_list *next;
+} name_list_list;
+
+typedef enum {
+ TRAVERSE_CB_CONTINUE,
+ TRAVERSE_CB_DONE,
+ TRAVERSE_CB_FAIL
+} traverse_cb_ret;
+
+/* private, file info, context */
+typedef traverse_cb_ret (*traverse_cb_func)(
+ void *,
+ const char *,
+ const struct stat *,
+ void * );
+typedef struct traverse_cb {
+ traverse_cb_func pre_func;
+ traverse_cb_func post_func;
+ void *pre_private;
+ void *post_private;
+} traverse_cb;
+
+typedef struct copy_private {
+ int source_prefix_len;
+ const char *dest_prefix;
+ int dest_prefix_len;
+ uid_t uidn;
+ gid_t gidn;
+} copy_private;
+
+typedef struct chown_private {
+ uid_t old_uidn;
+ uid_t new_uidn;
+ gid_t old_gidn;
+ gid_t new_gidn;
+} chown_private;
+
+typedef struct ustar_header {
+ char name[100];
+ char mode[8];
+ char uid[8];
+ char gid[8];
+ char size[12];
+ char mtime[12];
+ char checksum[8];
+ char typeflag[1];
+ char linkname[100];
+ char magic[6];
+ char version[2];
+ char uname[32];
+ char gname[32];
+ char devmajor[8];
+ char devminor[8];
+ char prefix[155];
+ char pad[12];
+} ustar_header;
+
+typedef struct tar_private {
+ FILE *file;
+ const char *name;
+} tar_private;
+
+/* FIXME: This mutex really needs to be executable-global, but this
+ * will have to do for now.
+ */
+static ldap_pvt_thread_mutex_t readdir_mutex;
+static ConfigDriver homedir_regexp_cfg;
+static ConfigDriver homedir_style_cfg;
+static slap_overinst homedir;
+
+static ConfigTable homedircfg[] = {
+ { "homedir-skeleton-path", "pathname", 2, 2, 0,
+ ARG_STRING|ARG_OFFSET,
+ (void *)offsetof(homedir_data, skeleton_path),
+ "( OLcfgCtAt:8.1 "
+ "NAME 'olcSkeletonPath' "
+ "DESC 'Pathname for home directory skeleton template' "
+ "SYNTAX OMsDirectoryString "
+ "SINGLE-VALUE )",
+ NULL, { .v_string = DEFAULT_SKEL }
+ },
+
+ { "homedir-min-uidnumber", "uid number", 2, 2, 0,
+ ARG_UINT|ARG_OFFSET,
+ (void *)offsetof(homedir_data, min_uid),
+ "( OLcfgCtAt:8.2 "
+ "NAME 'olcMinimumUidNumber' "
+ "DESC 'Minimum uidNumber attribute to consider' "
+ "SYNTAX OMsInteger "
+ "SINGLE-VALUE )",
+ NULL, { .v_uint = DEFAULT_MIN_UID }
+ },
+
+ { "homedir-regexp", "regexp> <path", 3, 3, 0,
+ ARG_MAGIC,
+ homedir_regexp_cfg,
+ "( OLcfgCtAt:8.3 "
+ "NAME 'olcHomedirRegexp' "
+ "DESC 'Regular expression for matching and transforming paths' "
+ "SYNTAX OMsDirectoryString "
+ "X-ORDERED 'VALUES' )",
+ NULL, NULL
+ },
+
+ { "homedir-delete-style", "style", 2, 2, 0,
+ ARG_MAGIC,
+ homedir_style_cfg,
+ "( OLcfgCtAt:8.4 "
+ "NAME 'olcHomedirDeleteStyle' "
+ "DESC 'Action to perform when removing a home directory' "
+ "SYNTAX OMsDirectoryString "
+ "SINGLE-VALUE )",
+ NULL, NULL
+ },
+
+ { "homedir-archive-path", "pathname", 2, 2, 0,
+ ARG_STRING|ARG_OFFSET,
+ (void *)offsetof(homedir_data, archive_path),
+ "( OLcfgCtAt:8.5 "
+ "NAME 'olcHomedirArchivePath' "
+ "DESC 'Pathname for home directory archival' "
+ "SYNTAX OMsDirectoryString "
+ "SINGLE-VALUE )",
+ NULL, NULL
+ },
+
+ { NULL, NULL, 0, 0, 0, ARG_IGNORED }
+};
+
+static ConfigOCs homedirocs[] = {
+ { "( OLcfgCtOc:8.1 "
+ "NAME 'olcHomedirConfig' "
+ "DESC 'Homedir configuration' "
+ "SUP olcOverlayConfig "
+ "MAY ( olcSkeletonPath $ olcMinimumUidNumber "
+ "$ olcHomedirRegexp $ olcHomedirDeleteStyle "
+ "$ olcHomedirArchivePath ) )",
+ Cft_Overlay, homedircfg },
+
+ { NULL, 0, NULL }
+};
+
+static int
+homedir_regexp_cfg( ConfigArgs *c )
+{
+ slap_overinst *on = (slap_overinst *)c->bi;
+ homedir_data *data = (homedir_data *)on->on_bi.bi_private;
+ int rc = ARG_BAD_CONF;
+
+ assert( data != NULL );
+
+ switch ( c->op ) {
+ case SLAP_CONFIG_EMIT: {
+ int i;
+ homedir_regexp *r;
+ struct berval bv;
+ char buf[4096];
+
+ bv.bv_val = buf;
+ for ( i = 0, r = data->regexps; r != NULL; ++i, r = r->next ) {
+ bv.bv_len = snprintf( buf, sizeof(buf), "{%d}%s %s", i,
+ r->match, r->replace );
+ if ( bv.bv_len >= sizeof(buf) ) {
+ Debug( LDAP_DEBUG_ANY, "homedir_regexp_cfg: "
+ "emit serialization failed: size %lu\n",
+ (unsigned long)bv.bv_len );
+ return ARG_BAD_CONF;
+ }
+ value_add_one( &c->rvalue_vals, &bv );
+ }
+ rc = 0;
+ } break;
+
+ case LDAP_MOD_DELETE:
+ if ( c->valx < 0 ) { /* delete all values */
+ homedir_regexp *r, *rnext;
+
+ for ( r = data->regexps; r != NULL; r = rnext ) {
+ rnext = r->next;
+ ch_free( r->match );
+ ch_free( r->replace );
+ regfree( &r->compiled );
+ ch_free( r );
+ }
+ data->regexps = NULL;
+ rc = 0;
+
+ } else { /* delete value by index*/
+ homedir_regexp **rp, *r;
+ int i;
+
+ for ( i = 0, rp = &data->regexps; i < c->valx;
+ ++i, rp = &(*rp)->next )
+ ;
+
+ r = *rp;
+ *rp = r->next;
+ ch_free( r->match );
+ ch_free( r->replace );
+ regfree( &r->compiled );
+ ch_free( r );
+
+ rc = 0;
+ }
+ break;
+
+ case LDAP_MOD_ADD: /* fallthrough */
+ case SLAP_CONFIG_ADD: { /* add values */
+ char *match = c->argv[1];
+ char *replace = c->argv[2];
+ regex_t compiled;
+ homedir_regexp **rp, *r;
+
+ memset( &compiled, 0, sizeof(compiled) );
+ rc = regcomp( &compiled, match, REG_EXTENDED );
+ if ( rc ) {
+ regerror( rc, &compiled, c->cr_msg, sizeof(c->cr_msg) );
+ regfree( &compiled );
+ return ARG_BAD_CONF;
+ }
+
+ r = ch_calloc( 1, sizeof(homedir_regexp) );
+ r->match = strdup( match );
+ r->replace = strdup( replace );
+ r->compiled = compiled;
+
+ if ( c->valx == -1 ) { /* append */
+ for ( rp = &data->regexps; ( *rp ) != NULL;
+ rp = &(*rp)->next )
+ ;
+ *rp = r;
+
+ } else { /* insert at valx */
+ int i;
+ for ( i = 0, rp = &data->regexps; i < c->valx;
+ rp = &(*rp)->next, ++i )
+ ;
+ r->next = *rp;
+ *rp = r;
+ }
+ rc = 0;
+ break;
+ }
+ default:
+ abort();
+ }
+
+ return rc;
+}
+
+static int
+homedir_style_cfg( ConfigArgs *c )
+{
+ slap_overinst *on = (slap_overinst *)c->bi;
+ homedir_data *data = (homedir_data *)on->on_bi.bi_private;
+ int rc = ARG_BAD_CONF;
+ struct berval bv;
+
+ assert( data != NULL );
+
+ switch ( c->op ) {
+ case SLAP_CONFIG_EMIT:
+ bv.bv_val = data->style == DEL_IGNORE ? "IGNORE" :
+ data->style == DEL_DELETE ? "DELETE" :
+ "ARCHIVE";
+ bv.bv_len = strlen( bv.bv_val );
+ rc = value_add_one( &c->rvalue_vals, &bv );
+ if ( rc != 0 ) return ARG_BAD_CONF;
+ break;
+
+ case LDAP_MOD_DELETE:
+ data->style = DEL_IGNORE;
+ rc = 0;
+ break;
+
+ case LDAP_MOD_ADD: /* fallthrough */
+ case SLAP_CONFIG_ADD: /* add values */
+ if ( strcasecmp( c->argv[1], "IGNORE" ) == 0 )
+ data->style = DEL_IGNORE;
+ else if ( strcasecmp( c->argv[1], "DELETE" ) == 0 )
+ data->style = DEL_DELETE;
+ else if ( strcasecmp( c->argv[1], "ARCHIVE" ) == 0 )
+ data->style = DEL_ARCHIVE;
+ else {
+ Debug( LDAP_DEBUG_ANY, "homedir_style_cfg: "
+ "unrecognized style keyword\n" );
+ return ARG_BAD_CONF;
+ }
+ rc = 0;
+ break;
+
+ default:
+ abort();
+ }
+
+ return rc;
+}
+
+#define HOMEDIR_NULLWRAP(x) ( ( x ) == NULL ? "unknown" : (x) )
+static void
+report_errno( const char *parent_func, const char *func, const char *filename )
+{
+ int save_errno = errno;
+ char ebuf[1024];
+
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "%s: %s: \"%s\": %d (%s)\n",
+ HOMEDIR_NULLWRAP(parent_func), HOMEDIR_NULLWRAP(func),
+ HOMEDIR_NULLWRAP(filename), save_errno,
+ AC_STRERROR_R( save_errno, ebuf, sizeof(ebuf) ) );
+}
+
+static int
+copy_link(
+ const char *dest_file,
+ const char *source_file,
+ const struct stat *st,
+ uid_t uidn,
+ gid_t gidn,
+ void *ctx )
+{
+ char *buf = NULL;
+ int rc;
+
+ assert( dest_file != NULL );
+ assert( source_file != NULL );
+ assert( st != NULL );
+ assert( (st->st_mode & S_IFMT) == S_IFLNK );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_link: %s to %s\n",
+ source_file, dest_file );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_link: %s uid %ld gid %ld\n",
+ dest_file, (long)uidn, (long)gidn );
+
+ /* calloc +1 for terminator */
+ buf = ber_memcalloc_x( 1, st->st_size + 1, ctx );
+ if ( buf == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "copy_link: alloc failed\n" );
+ return 1;
+ }
+ rc = readlink( source_file, buf, st->st_size );
+ if ( rc == -1 ) {
+ report_errno( "copy_link", "readlink", source_file );
+ goto fail;
+ }
+ rc = symlink( buf, dest_file );
+ if ( rc ) {
+ report_errno( "copy_link", "symlink", dest_file );
+ goto fail;
+ }
+ rc = lchown( dest_file, uidn, gidn );
+ if ( rc ) {
+ report_errno( "copy_link", "lchown", dest_file );
+ goto fail;
+ }
+ goto out;
+
+fail:
+ rc = 1;
+
+out:
+ if ( buf != NULL ) ber_memfree_x( buf, ctx );
+ return rc;
+}
+
+static int
+copy_blocks(
+ FILE *source,
+ FILE *dest,
+ const char *source_file,
+ const char *dest_file )
+{
+ char buf[4096];
+ size_t nread = 0;
+ int done = 0;
+
+ while ( !done ) {
+ nread = fread( buf, 1, sizeof(buf), source );
+ if ( nread == 0 ) {
+ if ( feof( source ) ) {
+ done = 1;
+ } else if ( ferror( source ) ) {
+ if ( source_file != NULL )
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "read error on %s\n",
+ source_file );
+ goto fail;
+ }
+ } else {
+ size_t nwritten = 0;
+ nwritten = fwrite( buf, 1, nread, dest );
+ if ( nwritten < nread ) {
+ if ( dest_file != NULL )
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "write error on %s\n",
+ dest_file );
+ goto fail;
+ }
+ }
+ }
+ return 0;
+fail:
+ return 1;
+}
+
+static int
+copy_file(
+ const char *dest_file,
+ const char *source_file,
+ uid_t uid,
+ gid_t gid,
+ int mode )
+{
+ FILE *source = NULL;
+ FILE *dest = NULL;
+ int rc;
+
+ assert( dest_file != NULL );
+ assert( source_file != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_file: %s to %s mode 0%o\n",
+ source_file, dest_file, mode );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_file: %s uid %ld gid %ld\n",
+ dest_file, (long)uid, (long)gid );
+
+ source = fopen( source_file, "rb" );
+ if ( source == NULL ) {
+ report_errno( "copy_file", "fopen", source_file );
+ goto fail;
+ }
+ dest = fopen( dest_file, "wb" );
+ if ( dest == NULL ) {
+ report_errno( "copy_file", "fopen", dest_file );
+ goto fail;
+ }
+
+ rc = copy_blocks( source, dest, source_file, dest_file );
+ if ( rc != 0 ) goto fail;
+
+ fclose( source );
+ source = NULL;
+ rc = fclose( dest );
+ dest = NULL;
+ if ( rc != 0 ) {
+ report_errno( "copy_file", "fclose", dest_file );
+ goto fail;
+ }
+
+ /* set owner/permission */
+ rc = lchown( dest_file, uid, gid );
+ if ( rc != 0 ) {
+ report_errno( "copy_file", "lchown", dest_file );
+ goto fail;
+ }
+ rc = chmod( dest_file, mode );
+ if ( rc != 0 ) {
+ report_errno( "copy_file", "chmod", dest_file );
+ goto fail;
+ }
+
+ rc = 0;
+ goto out;
+fail:
+ rc = 1;
+out:
+ if ( source != NULL ) fclose( source );
+ if ( dest != NULL ) fclose( dest );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_file: %s to %s exit %d\n",
+ source_file, dest_file, rc );
+ return rc;
+}
+
+static void
+free_name_list( name_list *names, void *ctx )
+{
+ name_list *next;
+
+ while ( names != NULL ) {
+ next = names->next;
+ if ( names->name != NULL ) ber_memfree_x( names->name, ctx );
+ ber_memfree_x( names, ctx );
+ names = next;
+ }
+}
+
+static int
+grab_names( const char *dir_path, name_list **names, void *ctx )
+{
+ int locked = 0;
+ DIR *dir = NULL;
+ struct dirent *entry = NULL;
+ name_list **tail = NULL;
+ int dir_path_len = 0;
+ int rc = 0;
+
+ assert( dir_path != NULL );
+ assert( names != NULL );
+ assert( *names == NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "grab_names: %s\n", dir_path );
+
+ tail = names;
+ dir_path_len = strlen( dir_path );
+ ldap_pvt_thread_mutex_lock( &readdir_mutex );
+ locked = 1;
+
+ dir = opendir( dir_path );
+ if ( dir == NULL ) {
+ report_errno( "grab_names", "opendir", dir_path );
+ goto fail;
+ }
+
+ while ( ( entry = readdir( dir ) ) != NULL ) {
+ /* no d_namelen in ac/dirent.h */
+ int d_namelen = strlen( entry->d_name );
+ int full_len;
+
+ /* Skip . and .. */
+ if ( ( d_namelen == 1 && entry->d_name[0] == '.' ) ||
+ ( d_namelen == 2 && entry->d_name[0] == '.' &&
+ entry->d_name[1] == '.' ) ) {
+ continue;
+ }
+
+ *tail = ber_memcalloc_x( 1, sizeof(**tail), ctx );
+ if ( *tail == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "grab_names: list alloc failed\n" );
+ goto fail;
+ }
+ (*tail)->next = NULL;
+
+ /* +1 for dirsep, +1 for term */
+ full_len = dir_path_len + 1 + d_namelen + 1;
+ (*tail)->name = ber_memalloc_x( full_len, ctx );
+ if ( (*tail)->name == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "grab_names: name alloc failed\n" );
+ goto fail;
+ }
+ snprintf( (*tail)->name, full_len, "%s" LDAP_DIRSEP "%s",
+ dir_path, entry->d_name );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "grab_names: found \"%s\"\n",
+ (*tail)->name );
+
+ rc = lstat( (*tail)->name, &(*tail)->st );
+ if ( rc ) {
+ report_errno( "grab_names", "lstat", (*tail)->name );
+ goto fail;
+ }
+
+ tail = &(*tail)->next;
+ }
+ closedir( dir );
+ ldap_pvt_thread_mutex_unlock( &readdir_mutex );
+ locked = 0;
+
+ dir = NULL;
+ goto success;
+
+success:
+ rc = 0;
+ goto out;
+fail:
+ rc = 1;
+ goto out;
+out:
+ if ( dir != NULL ) closedir( dir );
+ if ( locked ) ldap_pvt_thread_mutex_unlock( &readdir_mutex );
+ if ( rc != 0 && *names != NULL ) {
+ free_name_list( *names, ctx );
+ *names = NULL;
+ }
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "grab_names: %s exit %d\n",
+ dir_path, rc );
+ return rc;
+}
+
+static int
+traverse( const char *path, const traverse_cb *cb, void *ctx )
+{
+ name_list *next_name = NULL;
+ name_list_list *dir_stack = NULL;
+ name_list_list *next_dir;
+ int rc = 0;
+
+ assert( path != NULL );
+ assert( cb != NULL );
+ assert( cb->pre_func || cb->post_func );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse: %s\n", path );
+
+ dir_stack = ber_memcalloc_x( 1, sizeof(*dir_stack), ctx );
+ if ( dir_stack == NULL ) goto alloc_fail;
+ dir_stack->next = NULL;
+ dir_stack->list = ber_memcalloc_x( 1, sizeof(name_list), ctx );
+ if ( dir_stack->list == NULL ) goto alloc_fail;
+ rc = lstat( path, &dir_stack->list->st );
+ if ( rc != 0 ) {
+ report_errno( "traverse", "lstat", path );
+ goto fail;
+ }
+ dir_stack->list->next = NULL;
+ dir_stack->list->name = ber_strdup_x( path, ctx );
+ if ( dir_stack->list->name == NULL ) goto alloc_fail;
+
+ while ( dir_stack != NULL ) {
+ while ( dir_stack->list != NULL ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse: top of loop with \"%s\"\n",
+ dir_stack->list->name );
+
+ if ( cb->pre_func != NULL ) {
+ traverse_cb_ret cb_rc;
+ cb_rc = cb->pre_func( cb->pre_private, dir_stack->list->name,
+ &dir_stack->list->st, ctx );
+
+ if ( cb_rc == TRAVERSE_CB_DONE ) goto cb_done;
+ if ( cb_rc == TRAVERSE_CB_FAIL ) goto cb_fail;
+ }
+ if ( (dir_stack->list->st.st_mode & S_IFMT) == S_IFDIR ) {
+ /* push dir onto stack */
+ next_dir = dir_stack;
+ dir_stack = ber_memalloc_x( sizeof(*dir_stack), ctx );
+ if ( dir_stack == NULL ) {
+ dir_stack = next_dir;
+ goto alloc_fail;
+ }
+ dir_stack->list = NULL;
+ dir_stack->next = next_dir;
+ rc = grab_names(
+ dir_stack->next->list->name, &dir_stack->list, ctx );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "traverse: grab_names %s failed\n",
+ dir_stack->next->list->name );
+ goto fail;
+ }
+ } else {
+ /* just a file */
+ if ( cb->post_func != NULL ) {
+ traverse_cb_ret cb_rc;
+ cb_rc = cb->post_func( cb->post_private,
+ dir_stack->list->name, &dir_stack->list->st, ctx );
+
+ if ( cb_rc == TRAVERSE_CB_DONE ) goto cb_done;
+ if ( cb_rc == TRAVERSE_CB_FAIL ) goto cb_fail;
+ }
+ next_name = dir_stack->list->next;
+ ber_memfree_x( dir_stack->list->name, ctx );
+ ber_memfree_x( dir_stack->list, ctx );
+ dir_stack->list = next_name;
+ }
+ }
+ /* Time to pop a directory off the stack */
+ next_dir = dir_stack->next;
+ ber_memfree_x( dir_stack, ctx );
+ dir_stack = next_dir;
+ if ( dir_stack != NULL ) {
+ if ( cb->post_func != NULL ) {
+ traverse_cb_ret cb_rc;
+ cb_rc = cb->post_func( cb->post_private, dir_stack->list->name,
+ &dir_stack->list->st, ctx );
+
+ if ( cb_rc == TRAVERSE_CB_DONE ) goto cb_done;
+ if ( cb_rc == TRAVERSE_CB_FAIL ) goto cb_fail;
+ }
+ next_name = dir_stack->list->next;
+ ber_memfree_x( dir_stack->list->name, ctx );
+ ber_memfree_x( dir_stack->list, ctx );
+ dir_stack->list = next_name;
+ }
+ }
+
+ goto success;
+
+cb_done:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse: cb signaled completion\n" );
+success:
+ rc = 0;
+ goto out;
+
+cb_fail:
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "traverse: cb signaled failure\n" );
+ goto fail;
+alloc_fail:
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "traverse: allocation failed\n" );
+fail:
+ rc = 1;
+ goto out;
+
+out:
+ while ( dir_stack != NULL ) {
+ free_name_list( dir_stack->list, ctx );
+ next_dir = dir_stack->next;
+ ber_memfree_x( dir_stack, ctx );
+ dir_stack = next_dir;
+ }
+ return rc;
+}
+
+static traverse_cb_ret
+traverse_copy_pre(
+ void *private,
+ const char *name,
+ const struct stat *st,
+ void *ctx )
+{
+ copy_private *cp = private;
+ char *dest_name = NULL;
+ int source_name_len;
+ int dest_name_len;
+ int rc;
+
+ assert( private != NULL );
+ assert( name != NULL );
+ assert( st != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_copy_pre: %s entering\n",
+ name );
+
+ assert( cp->source_prefix_len >= 0 );
+ assert( cp->dest_prefix != NULL );
+ assert( cp->dest_prefix_len > 1 );
+
+ source_name_len = strlen( name );
+ assert( source_name_len >= cp->source_prefix_len );
+ /* +1 for terminator */
+ dest_name_len =
+ source_name_len + cp->dest_prefix_len - cp->source_prefix_len + 1;
+ dest_name = ber_memalloc_x( dest_name_len, ctx );
+ if ( dest_name == NULL ) goto alloc_fail;
+
+ snprintf( dest_name, dest_name_len, "%s%s", cp->dest_prefix,
+ name + cp->source_prefix_len );
+
+ switch ( st->st_mode & S_IFMT ) {
+ case S_IFDIR:
+ rc = mkdir( dest_name, st->st_mode & 06775 );
+ if ( rc ) {
+ int save_errno = errno;
+ switch ( save_errno ) {
+ case EEXIST:
+ /* directory already present; nothing to do */
+ goto exists;
+ break;
+ case ENOENT:
+ /* FIXME: should mkdir -p here */
+ /* fallthrough for now */
+ default:
+ report_errno( "traverse_copy_pre", "mkdir", dest_name );
+ goto fail;
+ }
+ }
+ rc = lchown( dest_name, cp->uidn, cp->gidn );
+ if ( rc ) {
+ report_errno( "traverse_copy_pre", "lchown", dest_name );
+ goto fail;
+ }
+ rc = chmod( dest_name, st->st_mode & 07777 );
+ if ( rc ) {
+ report_errno( "traverse_copy_pre", "chmod", dest_name );
+ goto fail;
+ }
+ break;
+ case S_IFREG:
+ rc = copy_file(
+ dest_name, name, cp->uidn, cp->gidn, st->st_mode & 07777 );
+ if ( rc ) goto fail;
+ break;
+ case S_IFIFO:
+ rc = mkfifo( dest_name, 0700 );
+ if ( rc ) {
+ report_errno( "traverse_copy_pre", "mkfifo", dest_name );
+ goto fail;
+ }
+ rc = lchown( dest_name, cp->uidn, cp->gidn );
+ if ( rc ) {
+ report_errno( "traverse_copy_pre", "lchown", dest_name );
+ goto fail;
+ }
+ rc = chmod( dest_name, st->st_mode & 07777 );
+ if ( rc ) {
+ report_errno( "traverse_copy_pre", "chmod", dest_name );
+ goto fail;
+ }
+ break;
+ case S_IFLNK:
+ rc = copy_link( dest_name, name, st, cp->uidn, cp->gidn, ctx );
+ if ( rc ) goto fail;
+ break;
+ default:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_copy_pre: skipping special: %s\n",
+ name );
+ }
+
+ goto success;
+
+alloc_fail:
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "traverse_copy_pre: allocation failed\n" );
+fail:
+ rc = TRAVERSE_CB_FAIL;
+ goto out;
+
+exists:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_copy_pre: \"%s\" already exists,"
+ " skipping the rest\n",
+ dest_name );
+ rc = TRAVERSE_CB_DONE;
+ goto out;
+
+success:
+ rc = TRAVERSE_CB_CONTINUE;
+out:
+ if ( dest_name != NULL ) ber_memfree_x( dest_name, ctx );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_copy_pre: exit %d\n", rc );
+ return rc;
+}
+
+static int
+copy_tree(
+ const char *dest_path,
+ const char *source_path,
+ uid_t uidn,
+ gid_t gidn,
+ void *ctx )
+{
+ traverse_cb cb;
+ copy_private cp;
+ int rc;
+
+ assert( dest_path != NULL );
+ assert( source_path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_tree: %s to %s entering\n",
+ source_path, dest_path );
+
+ cb.pre_func = traverse_copy_pre;
+ cb.post_func = NULL;
+ cb.pre_private = &cp;
+ cb.post_private = NULL;
+
+ cp.source_prefix_len = strlen( source_path );
+ cp.dest_prefix = dest_path;
+ cp.dest_prefix_len = strlen( dest_path );
+ cp.uidn = uidn;
+ cp.gidn = gidn;
+
+ if ( cp.source_prefix_len <= cp.dest_prefix_len &&
+ strncmp( source_path, dest_path, cp.source_prefix_len ) == 0 &&
+ ( cp.source_prefix_len == cp.dest_prefix_len ||
+ dest_path[cp.source_prefix_len] == LDAP_DIRSEP[0] ) ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "copy_tree: aborting: %s contains %s\n",
+ source_path, dest_path );
+ return 1;
+ }
+
+ rc = traverse( source_path, &cb, ctx );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "copy_tree: %s exit %d\n", source_path,
+ rc );
+
+ return rc;
+}
+
+static int
+homedir_provision(
+ const char *dest_path,
+ const char *skel_path,
+ uid_t uidn,
+ gid_t gidn,
+ void *ctx )
+{
+ int rc;
+
+ assert( dest_path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_provision: %s from skeleton %s\n",
+ dest_path, skel_path == NULL ? "(none)" : skel_path );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_provision: %s uidn %ld gidn %ld\n",
+ dest_path, (long)uidn, (long)gidn );
+
+ if ( skel_path == NULL ) {
+ rc = mkdir( dest_path, 0700 );
+ if ( rc ) {
+ int save_errno = errno;
+ switch ( save_errno ) {
+ case EEXIST:
+ /* directory already present; nothing to do */
+ /* but down chown either */
+ rc = 0;
+ goto out;
+ break;
+ default:
+ report_errno( "provision_homedir", "mkdir", dest_path );
+ goto fail;
+ }
+ }
+ rc = lchown( dest_path, uidn, gidn );
+ if ( rc ) {
+ report_errno( "provision_homedir", "lchown", dest_path );
+ goto fail;
+ }
+
+ } else {
+ rc = copy_tree( dest_path, skel_path, uidn, gidn, ctx );
+ }
+
+ goto out;
+
+fail:
+ rc = 1;
+ goto out;
+out:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_provision: %s to %s exit %d\n",
+ skel_path, dest_path, rc );
+ return rc;
+}
+
+/* traverse func for rm -rf */
+static traverse_cb_ret
+traverse_remove_post(
+ void *private,
+ const char *name,
+ const struct stat *st,
+ void *ctx )
+{
+ int rc;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_remove_post: %s entering\n",
+ name );
+
+ if ( (st->st_mode & S_IFMT) == S_IFDIR ) {
+ rc = rmdir( name );
+ if ( rc != 0 ) {
+ report_errno( "traverse_remove_post", "rmdir", name );
+ goto fail;
+ }
+ } else {
+ rc = unlink( name );
+ if ( rc != 0 ) {
+ report_errno( "traverse_remove_post", "unlink", name );
+ goto fail;
+ }
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_remove_post: %s exit continue\n",
+ name );
+ return TRAVERSE_CB_CONTINUE;
+
+fail:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_remove_post: %s exit failure\n",
+ name );
+ return TRAVERSE_CB_FAIL;
+}
+
+static int
+delete_tree( const char *path, void *ctx )
+{
+ const static traverse_cb cb = { NULL, traverse_remove_post, NULL, NULL };
+ int rc;
+
+ assert( path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "delete_tree: %s entering\n", path );
+
+ rc = traverse( path, &cb, ctx );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "delete_tree: %s exit %d\n", path, rc );
+
+ return rc;
+}
+
+static int
+get_tar_name(
+ const char *path,
+ const char *tar_path,
+ char *tar_name,
+ int name_size )
+{
+ int rc = 0;
+ const char *ch;
+ int fd = -1;
+ int counter = 0;
+ time_t now;
+
+ assert( path != NULL );
+ assert( tar_path != NULL );
+ assert( tar_name != NULL );
+
+ for ( ch = path + strlen( path );
+ *ch != LDAP_DIRSEP[0] && ch > path;
+ --ch )
+ ;
+ if ( ch <= path || strlen( ch ) < 2 ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "get_tar_name: unable to construct a tar name from input "
+ "path \"%s\"\n",
+ path );
+ goto fail;
+ }
+ ++ch; /* skip past sep */
+ time( &now );
+
+ while ( fd < 0 ) {
+ snprintf( tar_name, name_size, "%s" LDAP_DIRSEP "%s-%ld-%d.tar",
+ tar_path, ch, (long)now, counter );
+ fd = open( tar_name, O_WRONLY|O_CREAT|O_EXCL, 0600 );
+ if ( fd < 0 ) {
+ int save_errno = errno;
+ if ( save_errno != EEXIST ) {
+ report_errno( "get_tar_name", "open", tar_name );
+ goto fail;
+ }
+ ++counter;
+ }
+ }
+
+ rc = 0;
+ goto out;
+
+fail:
+ rc = 1;
+ *tar_name = '\0';
+out:
+ if ( fd >= 0 ) close( fd );
+ return rc;
+}
+
+/* traverse func for rechown */
+static traverse_cb_ret
+traverse_chown_pre(
+ void *private,
+ const char *name,
+ const struct stat *st,
+ void *ctx )
+{
+ int rc;
+ chown_private *cp = private;
+ uid_t set_uidn = -1;
+ gid_t set_gidn = -1;
+
+ assert( private != NULL );
+ assert( name != NULL );
+ assert( st != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_chown_pre: %s entering\n",
+ name );
+
+ if ( st->st_uid == cp->old_uidn ) set_uidn = cp->new_uidn;
+ if ( st->st_gid == cp->old_gidn ) set_gidn = cp->new_gidn;
+
+ if ( set_uidn != (uid_t)-1 || set_gidn != (gid_t)-1 ) {
+ rc = lchown( name, set_uidn, set_gidn );
+ if ( rc ) {
+ report_errno( "traverse_chown_pre", "lchown", name );
+ goto fail;
+ }
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_chown_pre: %s exit continue\n",
+ name );
+ return TRAVERSE_CB_CONTINUE;
+
+fail:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_chown_pre: %s exit failure\n",
+ name );
+ return TRAVERSE_CB_FAIL;
+}
+
+static int
+chown_tree(
+ const char *path,
+ uid_t old_uidn,
+ uid_t new_uidn,
+ gid_t old_gidn,
+ gid_t new_gidn,
+ void *ctx )
+{
+ traverse_cb cb;
+ chown_private cp;
+ int rc;
+
+ assert( path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "chown_tree: %s entering\n", path );
+
+ cb.pre_func = traverse_chown_pre;
+ cb.post_func = NULL;
+ cb.pre_private = &cp;
+ cb.post_private = NULL;
+
+ cp.old_uidn = old_uidn;
+ cp.new_uidn = new_uidn;
+ cp.old_gidn = old_gidn;
+ cp.new_gidn = new_gidn;
+
+ rc = traverse( path, &cb, ctx );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "chown_tree: %s exit %d\n", path, rc );
+
+ return rc;
+}
+
+static int
+homedir_rename( const char *source_path, const char *dest_path )
+{
+ int rc = 0;
+
+ assert( source_path != NULL );
+ assert( dest_path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_rename: %s to %s\n",
+ source_path, dest_path );
+ rc = rename( source_path, dest_path );
+ if ( rc != 0 ) {
+ char ebuf[1024];
+ int save_errno = errno;
+
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_rename: rename(\"%s\", \"%s\"): (%s)\n",
+ source_path, dest_path,
+ AC_STRERROR_R( save_errno, ebuf, sizeof(ebuf) ) );
+ }
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_rename: %s to %s exit %d\n",
+ source_path, dest_path, rc );
+ return rc;
+}
+
+/* FIXME: This assumes ASCII; needs fixing for z/OS */
+static int
+tar_set_header( ustar_header *tar, const struct stat *st, const char *name )
+{
+ int name_len;
+ int rc;
+ const char *ch, *end;
+
+ assert( tar != NULL );
+ assert( st != NULL );
+ assert( name != NULL );
+ assert( sizeof(*tar) == 512 );
+ assert( sizeof(tar->name) == 100 );
+ assert( sizeof(tar->prefix) == 155 );
+ assert( sizeof(tar->checksum) == 8 );
+
+ memset( tar, 0, sizeof(*tar) );
+
+ assert( name[0] == LDAP_DIRSEP[0] );
+ name += 1; /* skip leading / */
+
+ name_len = strlen( name );
+
+ /* fits in tar->name? */
+ /* Yes, name and prefix do not need a trailing nul. */
+ if ( name_len <= 100 ) {
+ strncpy( tar->name, name, 100 );
+
+ /* try fit in tar->name + tar->prefix */
+ } else {
+ /* try to find something to stick into tar->name */
+ for ( ch = name + name_len - 100, end = name + name_len;
+ ch < end && *ch != LDAP_DIRSEP[0];
+ ++ch )
+ ;
+ if ( end - ch > 0 ) /* +1 skip past sep */
+ ch++;
+ else {
+ /* reset; name too long for UStar */
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "tar_set_header: name too long: \"%s\"\n",
+ name );
+ ch = name + name_len - 100;
+ }
+ strncpy( tar->name, ch + 1, 100 );
+ {
+ int prefix_len = ( ch - 1 ) - name;
+ if ( prefix_len > 155 ) prefix_len = 155;
+ strncpy( tar->prefix, name, prefix_len );
+ }
+ }
+
+ snprintf( tar->mode, 8, "%06lo ", (long)st->st_mode & 07777 );
+ snprintf( tar->uid, 8, "%06lo ", (long)st->st_uid );
+ snprintf( tar->gid, 8, "%06lo ", (long)st->st_gid );
+ snprintf( tar->mtime, 12, "%010lo ", (long)st->st_mtime );
+ snprintf( tar->size, 12, "%010lo ", (long)0 );
+ switch ( st->st_mode & S_IFMT ) {
+ case S_IFREG:
+ tar->typeflag[0] = '0';
+ snprintf( tar->size, 12, "%010lo ", (long)st->st_size );
+ break;
+ case S_IFLNK:
+ tar->typeflag[0] = '2';
+ rc = readlink( name - 1, tar->linkname, 99 );
+ if ( rc == -1 ) {
+ report_errno( "tar_set_header", "readlink", name );
+ goto fail;
+ }
+ break;
+ case S_IFCHR:
+ tar->typeflag[0] = '3';
+ /* FIXME: this is probably wrong but shouldn't likely be an issue */
+ snprintf( tar->devmajor, 8, "%06lo ", (long)st->st_rdev >> 16 );
+ snprintf( tar->devminor, 8, "%06lo ", (long)st->st_rdev & 0xffff );
+ break;
+ case S_IFBLK:
+ tar->typeflag[0] = '4';
+ /* FIXME: this is probably wrong but shouldn't likely be an issue */
+ snprintf( tar->devmajor, 8, "%06lo ", (long)st->st_rdev >> 16 );
+ snprintf( tar->devminor, 8, "%06lo ", (long)st->st_rdev & 0xffff );
+ break;
+ case S_IFDIR:
+ tar->typeflag[0] = '5';
+ break;
+ case S_IFIFO:
+ tar->typeflag[0] = '6';
+ break;
+ default:
+ goto fail;
+ }
+ snprintf( tar->magic, 6, "ustar" );
+ tar->version[0] = '0';
+ tar->version[1] = '0';
+
+ {
+ unsigned char *uch = (unsigned char *)tar;
+ unsigned char *uend = uch + 512;
+ unsigned long sum = 0;
+
+ memset( &tar->checksum, ' ', sizeof(tar->checksum) );
+
+ for ( ; uch < uend; ++uch )
+ sum += *uch;
+
+ /* zero-padded, six octal digits, followed by NUL then space (!) */
+ /* Yes, that's terminated exactly reverse of the others. */
+ snprintf( tar->checksum, sizeof(tar->checksum) - 1, "%06lo", sum );
+ }
+
+ return 0;
+fail:
+ return 1;
+}
+
+static traverse_cb_ret
+traverse_tar_pre(
+ void *private,
+ const char *name,
+ const struct stat *st,
+ void *ctx )
+{
+ int rc;
+ traverse_cb_ret cbrc;
+ tar_private *tp = private;
+ ustar_header tar;
+ FILE *source = NULL;
+
+ assert( private != NULL );
+ assert( name != NULL );
+ assert( st != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: %s entering\n", name );
+
+ switch ( st->st_mode & S_IFMT ) {
+ case S_IFREG:
+ if ( sizeof(st->st_size) > 4 && ( st->st_size >> 33 ) >= 1 ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: %s is larger than 8GiB POSIX UStar "
+ "file size limit\n",
+ name );
+ goto fail;
+ }
+ /* fallthrough */
+ case S_IFDIR:
+ case S_IFLNK:
+ case S_IFIFO:
+ case S_IFCHR:
+ case S_IFBLK:
+ rc = tar_set_header( &tar, st, name );
+ if ( rc ) goto fail;
+ break;
+ default:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: skipping \"%s\" mode %o\n",
+ name, st->st_mode );
+ goto done;
+ }
+
+ rc = fwrite( &tar, 1, 512, tp->file );
+ if ( rc != 512 ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: write error in tar header\n" );
+ goto fail;
+ }
+
+ if ( (st->st_mode & S_IFMT) == S_IFREG ) {
+ source = fopen( name, "rb" );
+ if ( source == NULL ) {
+ report_errno( "traverse_tar_pre", "fopen", name );
+ goto fail;
+ }
+ rc = copy_blocks( source, tp->file, name, tp->name );
+ if ( rc != 0 ) goto fail;
+ fclose( source );
+ source = NULL;
+ }
+
+ { /* advance to end of record */
+ off_t pos = ftello( tp->file );
+ if ( pos == -1 ) {
+ report_errno( "traverse_tar_pre", "ftello", tp->name );
+ goto fail;
+ }
+ pos += ( 512 - ( pos % 512 ) ) % 512;
+ rc = fseeko( tp->file, pos, SEEK_SET );
+ if ( rc != 0 ) {
+ report_errno( "traverse_tar_pre", "fseeko", tp->name );
+ goto fail;
+ }
+ }
+
+done:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: %s exit continue\n",
+ name );
+ cbrc = TRAVERSE_CB_CONTINUE;
+ goto out;
+fail:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "traverse_tar_pre: %s exit failure\n",
+ name );
+ cbrc = TRAVERSE_CB_FAIL;
+
+out:
+ if ( source != NULL ) fclose( source );
+ return cbrc;
+}
+
+static int
+tar_tree( const char *path, const char *tar_name, void *ctx )
+{
+ traverse_cb cb;
+ tar_private tp;
+ int rc;
+
+ assert( path != NULL );
+ assert( tar_name != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "tar_tree: %s into %s entering\n", path,
+ tar_name );
+
+ cb.pre_func = traverse_tar_pre;
+ cb.post_func = NULL;
+ cb.pre_private = &tp;
+ cb.post_private = NULL;
+
+ tp.name = tar_name;
+ tp.file = fopen( tar_name, "wb" );
+ if ( tp.file == NULL ) {
+ report_errno( "tar_tree", "fopen", tar_name );
+ goto fail;
+ }
+
+ rc = traverse( path, &cb, ctx );
+ if ( rc != 0 ) goto fail;
+
+ {
+ off_t pos = ftello( tp.file );
+ if ( pos == -1 ) {
+ report_errno( "tar_tree", "ftello", tp.name );
+ goto fail;
+ }
+ pos += 1024; /* two zero records */
+ pos += ( 10240 - ( pos % 10240 ) ) % 10240;
+ rc = ftruncate( fileno( tp.file ), pos );
+ if ( rc != 0 ) {
+ report_errno( "tar_tree", "ftrunctate", tp.name );
+ goto fail;
+ }
+ }
+
+ rc = fclose( tp.file );
+ tp.file = NULL;
+ if ( rc != 0 ) {
+ report_errno( "tar_tree", "fclose", tp.name );
+ goto fail;
+ }
+ goto out;
+
+fail:
+ rc = 1;
+out:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "tar_tree: %s exit %d\n", path, rc );
+ if ( tp.file != NULL ) fclose( tp.file );
+ return rc;
+}
+
+static int
+homedir_deprovision( const homedir_data *data, const char *path, void *ctx )
+{
+ int rc = 0;
+ char tar_name[1024];
+
+ assert( data != NULL );
+ assert( path != NULL );
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_deprovision: %s entering\n",
+ path );
+
+ switch ( data->style ) {
+ case DEL_IGNORE:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_deprovision: style is ignore\n" );
+ break;
+ case DEL_ARCHIVE:
+ if ( data->archive_path == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_deprovision: archive path not set\n" );
+ goto fail;
+ }
+ rc = get_tar_name( path, data->archive_path, tar_name, 1024 );
+ if ( rc != 0 ) goto fail;
+ rc = tar_tree( path, tar_name, ctx );
+ if ( rc != 0 ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_deprovision: archive failed, not deleting\n" );
+ goto fail;
+ }
+ /* fall-through */
+ case DEL_DELETE:
+ rc = delete_tree( path, ctx );
+ break;
+ default:
+ abort();
+ }
+
+ rc = 0;
+ goto out;
+
+fail:
+ rc = 1;
+out:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_deprovision: %s leaving\n",
+ path );
+
+ return rc;
+}
+
+/* FIXME: This assumes ASCII; needs fixing for z/OS */
+/* FIXME: This should also be in a slapd library function somewhere */
+#define MAX_MATCHES ( 10 )
+static int
+homedir_match(
+ const homedir_regexp *r,
+ const char *homedir,
+ char *result,
+ size_t result_size )
+{
+ int rc;
+ int n;
+ regmatch_t matches[MAX_MATCHES];
+ char *resc, *repc;
+
+ assert( r != NULL );
+ assert( homedir != NULL );
+ assert( result_size > 1 );
+
+ memset( matches, 0, sizeof(matches) );
+ rc = regexec( &r->compiled, homedir, MAX_MATCHES, matches, 0 );
+ if ( rc ) {
+ if ( rc != REG_NOMATCH ) {
+ char msg[256];
+ regerror( rc, &r->compiled, msg, sizeof(msg) );
+ Debug( LDAP_DEBUG_ANY, "homedir_match: "
+ "%s\n", msg );
+ }
+ return rc;
+ }
+
+ for ( resc = result, repc = r->replace;
+ result_size > 1 && *repc != '\0';
+ ++repc, ++resc, --result_size ) {
+ switch ( *repc ) {
+ case '$':
+ ++repc;
+ n = ( *repc ) - '0';
+ if ( n < 0 || n > ( MAX_MATCHES - 1 ) ||
+ matches[n].rm_so < 0 ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "invalid regex term expansion in \"%s\" "
+ "at char %ld, n is %d\n",
+ r->replace, (long)( repc - r->replace ), n );
+ return 1;
+ }
+ {
+ size_t match_len = matches[n].rm_eo - matches[n].rm_so;
+ const char *match_start = homedir + matches[n].rm_so;
+ if ( match_len >= result_size ) goto too_long;
+
+ memcpy( resc, match_start, match_len );
+ result_size -= match_len;
+ resc += match_len - 1;
+ }
+ break;
+
+ case '\\':
+ ++repc;
+ /* fallthrough */
+
+ default:
+ *resc = *repc;
+ }
+ }
+ *resc = '\0';
+ if ( *repc != '\0' ) goto too_long;
+
+ return 0;
+
+too_long:
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "regex expansion of %s too long\n",
+ r->replace );
+ *result = '\0';
+ return 1;
+}
+
+/* Sift through an entry for interesting values
+ * return 0 on success and set vars
+ * return 1 if homedir is not present or not valid
+ * sets presence if any homedir attributes are noticed
+ */
+static int
+harvest_values(
+ const homedir_data *data,
+ const Entry *e,
+ char *home_buf,
+ int home_buf_size,
+ uid_t *uidn,
+ gid_t *gidn,
+ int *presence )
+{
+ Attribute *a;
+ char *homedir = NULL;
+
+ assert( data != NULL );
+ assert( e != NULL );
+ assert( home_buf != NULL );
+ assert( home_buf_size > 1 );
+ assert( uidn != NULL );
+ assert( gidn != NULL );
+ assert( presence != NULL );
+
+ *presence = 0;
+ if ( e == NULL ) return 1;
+ *uidn = 0;
+ *gidn = 0;
+
+ for ( a = e->e_attrs; a->a_next != NULL; a = a->a_next ) {
+ if ( a->a_desc == data->home_ad ) {
+ homedir = a->a_vals[0].bv_val;
+ *presence = 1;
+ } else if ( a->a_desc == data->uidn_ad ) {
+ *uidn = (uid_t)strtol( a->a_vals[0].bv_val, NULL, 10 );
+ *presence = 1;
+ } else if ( a->a_desc == data->gidn_ad ) {
+ *gidn = (gid_t)strtol( a->a_vals[0].bv_val, NULL, 10 );
+ *presence = 1;
+ }
+ }
+ if ( homedir != NULL ) {
+ homedir_regexp *r;
+
+ for ( r = data->regexps; r != NULL; r = r->next ) {
+ int rc = homedir_match( r, homedir, home_buf, home_buf_size );
+ if ( rc == 0 ) return 0;
+ }
+ }
+
+ return 1;
+}
+
+static int
+homedir_mod_cleanup( Operation *op, SlapReply *rs )
+{
+ slap_callback *cb = NULL;
+ slap_callback **cbp = NULL;
+ homedir_cb_data *cb_data = NULL;
+ Entry *e = NULL;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_cleanup: entering\n" );
+
+ for ( cbp = &op->o_callback;
+ *cbp != NULL && (*cbp)->sc_cleanup != homedir_mod_cleanup;
+ cbp = &(*cbp)->sc_next )
+ ;
+
+ if ( *cbp == NULL ) goto out;
+ cb = *cbp;
+
+ cb_data = (homedir_cb_data *)cb->sc_private;
+ e = cb_data->entry;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_cleanup: found <%s>\n",
+ e->e_nname.bv_val );
+ entry_free( e );
+ op->o_tmpfree( cb_data, op->o_tmpmemctx );
+ *cbp = cb->sc_next;
+ op->o_tmpfree( cb, op->o_tmpmemctx );
+
+out:
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_cleanup: leaving\n" );
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+homedir_mod_response( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = NULL;
+ homedir_data *data = NULL;
+ slap_callback *cb = NULL;
+ homedir_cb_data *cb_data = NULL;
+ Entry *e = NULL;
+ int rc = SLAP_CB_CONTINUE;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: entering\n" );
+
+ if ( rs->sr_err != LDAP_SUCCESS ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: op was not successful\n" );
+ goto out;
+ }
+
+ /* Retrieve stashed entry */
+ for ( cb = op->o_callback;
+ cb != NULL && cb->sc_cleanup != homedir_mod_cleanup;
+ cb = cb->sc_next )
+ ;
+ if ( cb == NULL ) goto out;
+ cb_data = (homedir_cb_data *)cb->sc_private;
+ e = cb_data->entry;
+ on = cb_data->on;
+ data = on->on_bi.bi_private;
+ assert( e != NULL );
+ assert( data != NULL );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: found <%s>\n",
+ e->e_nname.bv_val );
+
+ switch ( op->o_tag ) {
+ case LDAP_REQ_DELETE: {
+ char home_buf[1024];
+ uid_t uidn = 0;
+ gid_t gidn = 0;
+ int presence;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: successful delete found\n" );
+ rc = harvest_values( data, e, home_buf, sizeof(home_buf), &uidn,
+ &gidn, &presence );
+ if ( rc == 0 && uidn >= data->min_uid ) {
+ homedir_deprovision( data, home_buf, op->o_tmpmemctx );
+ } else {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: skipping\n" );
+ }
+ rc = SLAP_CB_CONTINUE;
+ break;
+ }
+
+ case LDAP_REQ_MODIFY:
+ case LDAP_REQ_MODRDN: {
+ Operation nop = *op;
+ Entry *old_entry = e;
+ Entry *new_entry = NULL;
+ Entry *etmp;
+ char old_home[1024];
+ char new_home[1024];
+ uid_t old_uidn, new_uidn;
+ uid_t old_gidn, new_gidn;
+ int old_valid = 0;
+ int new_valid = 0;
+ int old_presence, new_presence;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: successful modify/modrdn found\n" );
+
+ /* retrieve the revised entry */
+ nop.o_bd = on->on_info->oi_origdb;
+ rc = overlay_entry_get_ov(
+ &nop, &op->o_req_ndn, NULL, NULL, 0, &etmp, on );
+ if ( etmp != NULL ) {
+ new_entry = entry_dup( etmp );
+ overlay_entry_release_ov( &nop, etmp, 0, on );
+ }
+ if ( rc || new_entry == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_mod_response: unable to get revised <%s>\n",
+ op->o_req_ndn.bv_val );
+ if ( new_entry != NULL ) {
+ entry_free( new_entry );
+ new_entry = NULL;
+ }
+ }
+
+ /* analyze old and new */
+ rc = harvest_values( data, old_entry, old_home, 1024, &old_uidn,
+ &old_gidn, &old_presence );
+ if ( rc == 0 && old_uidn >= data->min_uid ) old_valid = 1;
+ if ( new_entry != NULL ) {
+ rc = harvest_values( data, new_entry, new_home, 1024, &new_uidn,
+ &new_gidn, &new_presence );
+ if ( rc == 0 && new_uidn >= data->min_uid ) new_valid = 1;
+ entry_free( new_entry );
+ new_entry = NULL;
+ }
+
+ if ( new_valid && !old_valid ) { /* like an add */
+ if ( old_presence )
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: old entry is now valid\n" );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: treating like an add\n" );
+ homedir_provision( new_home, data->skeleton_path, new_uidn,
+ new_gidn, op->o_tmpmemctx );
+
+ } else if ( old_valid && !new_valid &&
+ !new_presence ) { /* like a del */
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: treating like a del\n" );
+ homedir_deprovision( data, old_home, op->o_tmpmemctx );
+
+ } else if ( new_valid && old_valid ) { /* change */
+ int did_something = 0;
+
+ if ( strcmp( old_home, new_home ) != 0 ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: treating like a rename\n" );
+ homedir_rename( old_home, new_home );
+ did_something = 1;
+ }
+ if ( old_uidn != new_uidn || old_gidn != new_gidn ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_mod_response: rechowning\n" );
+ chown_tree( new_home, old_uidn, new_uidn, old_gidn,
+ new_gidn, op->o_tmpmemctx );
+ did_something = 1;
+ }
+ if ( !did_something ) {
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: nothing to do\n" );
+ }
+ } else if ( old_presence || new_presence ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_mod_response: <%s> values present "
+ "but invalid; ignoring\n",
+ op->o_req_ndn.bv_val );
+ }
+ rc = SLAP_CB_CONTINUE;
+ break;
+ }
+
+ default:
+ rc = SLAP_CB_CONTINUE;
+ }
+
+out:
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_mod_response: leaving\n" );
+ return rc;
+}
+
+static int
+homedir_op_mod( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ slap_callback *cb = NULL;
+ homedir_cb_data *cb_data = NULL;
+ Entry *e = NULL;
+ Entry *se = NULL;
+ Operation nop = *op;
+ int rc;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_op_mod: entering\n" );
+
+ /* retrieve the entry */
+ nop.o_bd = on->on_info->oi_origdb;
+ rc = overlay_entry_get_ov( &nop, &op->o_req_ndn, NULL, NULL, 0, &e, on );
+ if ( e != NULL ) {
+ se = entry_dup( e );
+ overlay_entry_release_ov( &nop, e, 0, on );
+ e = se;
+ }
+ if ( rc || e == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "homedir_op_mod: unable to get <%s>\n",
+ op->o_req_ndn.bv_val );
+ goto out;
+ }
+
+ /* Allocate the callback to hold the entry */
+ cb = op->o_tmpalloc( sizeof(slap_callback), op->o_tmpmemctx );
+ cb_data = op->o_tmpalloc( sizeof(homedir_cb_data), op->o_tmpmemctx );
+ cb->sc_cleanup = homedir_mod_cleanup;
+ cb->sc_response = homedir_mod_response;
+ cb->sc_private = cb_data;
+ cb_data->entry = e;
+ e = NULL;
+ cb_data->on = on;
+ cb->sc_next = op->o_callback;
+ op->o_callback = cb;
+
+out:
+ if ( e != NULL ) entry_free( e );
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_op_mod: leaving\n" );
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+homedir_response( Operation *op, SlapReply *rs )
+{
+ slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+ homedir_data *data = on->on_bi.bi_private;
+
+ Debug( LDAP_DEBUG_TRACE, "homedir: "
+ "homedir_response: entering\n" );
+ if ( rs->sr_err != LDAP_SUCCESS || data == NULL ) return SLAP_CB_CONTINUE;
+
+ switch ( op->o_tag ) {
+ case LDAP_REQ_ADD: { /* Check for new homedir */
+ char home_buf[1024];
+ uid_t uidn = 0;
+ gid_t gidn = 0;
+ int rc, presence;
+
+ rc = harvest_values( data, op->ora_e, home_buf, sizeof(home_buf),
+ &uidn, &gidn, &presence );
+ if ( rc == 0 && uidn >= data->min_uid ) {
+ homedir_provision( home_buf, data->skeleton_path, uidn, gidn,
+ op->o_tmpmemctx );
+ }
+ return SLAP_CB_CONTINUE;
+ }
+
+ default:
+ return SLAP_CB_CONTINUE;
+ }
+
+ return SLAP_CB_CONTINUE;
+}
+
+static int
+homedir_db_init( BackendDB *be, ConfigReply *cr )
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ homedir_data *data = ch_calloc( 1, sizeof(homedir_data) );
+ const char *text;
+
+ if ( slap_str2ad( "homeDirectory", &data->home_ad, &text ) ||
+ slap_str2ad( "uidNumber", &data->uidn_ad, &text ) ||
+ slap_str2ad( "gidNumber", &data->gidn_ad, &text ) ) {
+ Debug( LDAP_DEBUG_ANY, "homedir: "
+ "nis schema not available\n" );
+ return 1;
+ }
+
+ data->skeleton_path = strdup( DEFAULT_SKEL );
+ data->min_uid = DEFAULT_MIN_UID;
+ data->archive_path = NULL;
+
+ on->on_bi.bi_private = data;
+ return 0;
+}
+
+static int
+homedir_db_destroy( BackendDB *be, ConfigReply *cr )
+{
+ slap_overinst *on = (slap_overinst *)be->bd_info;
+ homedir_data *data = on->on_bi.bi_private;
+ homedir_regexp *r, *rnext;
+
+ if ( data != NULL ) {
+ for ( r = data->regexps; r != NULL; r = rnext ) {
+ rnext = r->next;
+ ch_free( r->match );
+ ch_free( r->replace );
+ regfree( &r->compiled );
+ ch_free( r );
+ }
+ data->regexps = NULL;
+ if ( data->skeleton_path != NULL ) ch_free( data->skeleton_path );
+ if ( data->archive_path != NULL ) ch_free( data->archive_path );
+ ch_free( data );
+ }
+
+ return 0;
+}
+
+int
+homedir_initialize()
+{
+ int rc;
+
+ assert( ' ' == 32 ); /* Lots of ASCII requirements for now */
+
+ memset( &homedir, 0, sizeof(homedir) );
+
+ homedir.on_bi.bi_type = "homedir";
+ homedir.on_bi.bi_db_init = homedir_db_init;
+ homedir.on_bi.bi_db_destroy = homedir_db_destroy;
+ homedir.on_bi.bi_op_delete = homedir_op_mod;
+ homedir.on_bi.bi_op_modify = homedir_op_mod;
+ homedir.on_response = homedir_response;
+
+ homedir.on_bi.bi_cf_ocs = homedirocs;
+ rc = config_register_schema( homedircfg, homedirocs );
+ if ( rc ) return rc;
+
+ ldap_pvt_thread_mutex_init( &readdir_mutex );
+
+ return overlay_register( &homedir );
+}
+
+int
+homedir_terminate()
+{
+ ldap_pvt_thread_mutex_destroy( &readdir_mutex );
+ return 0;
+}
+
+#if SLAPD_OVER_HOMEDIR == SLAPD_MOD_DYNAMIC && defined(PIC)
+int
+init_module( int argc, char *argv[] )
+{
+ return homedir_initialize();
+}
+
+int
+term_module()
+{
+ return homedir_terminate();
+}
+#endif
+
+#endif /* SLAPD_OVER_HOMEDIR */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 10:23:12 +0000