From 333f7ecfa3e040191c66b2b92f6c117ca2cbac1d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 14:50:00 +0200 Subject: Adding upstream version 1:4.8.1. Signed-off-by: Daniel Baumann --- lib/sgroupio.c | 329 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 329 insertions(+) create mode 100644 lib/sgroupio.c (limited to 'lib/sgroupio.c') diff --git a/lib/sgroupio.c b/lib/sgroupio.c new file mode 100644 index 0000000..ffbdb26 --- /dev/null +++ b/lib/sgroupio.c @@ -0,0 +1,329 @@ +/* + * Copyright (c) 1990 - 1994, Julianne Frances Haugh + * Copyright (c) 1996 - 2000, Marek Michałkiewicz + * Copyright (c) 2001 , Michał Moskal + * Copyright (c) 2005 , Tomasz Kłoczko + * Copyright (c) 2007 - 2013, Nicolas François + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the copyright holders or contributors may not be used to + * endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include + +#ifdef SHADOWGRP + +#ident "$Id$" + +#include "prototypes.h" +#include "defines.h" +#include "commonio.h" +#include "getdef.h" +#include "sgroupio.h" + +/*@null@*/ /*@only@*/struct sgrp *__sgr_dup (const struct sgrp *sgent) +{ + struct sgrp *sg; + int i; + + sg = (struct sgrp *) malloc (sizeof *sg); + if (NULL == sg) { + return NULL; + } + /* Do the same as the other _dup function, even if we know the + * structure. */ + memset (sg, 0, sizeof *sg); + /*@-mustfreeonly@*/ + sg->sg_name = strdup (sgent->sg_name); + /*@=mustfreeonly@*/ + if (NULL == sg->sg_name) { + free (sg); + return NULL; + } + /*@-mustfreeonly@*/ + sg->sg_passwd = strdup (sgent->sg_passwd); + /*@=mustfreeonly@*/ + if (NULL == sg->sg_passwd) { + free (sg->sg_name); + free (sg); + return NULL; + } + + for (i = 0; NULL != sgent->sg_adm[i]; i++); + /*@-mustfreeonly@*/ + sg->sg_adm = (char **) malloc ((i + 1) * sizeof (char *)); + /*@=mustfreeonly@*/ + if (NULL == sg->sg_adm) { + free (sg->sg_passwd); + free (sg->sg_name); + free (sg); + return NULL; + } + for (i = 0; NULL != sgent->sg_adm[i]; i++) { + sg->sg_adm[i] = strdup (sgent->sg_adm[i]); + if (NULL == sg->sg_adm[i]) { + for (i = 0; NULL != sg->sg_adm[i]; i++) { + free (sg->sg_adm[i]); + } + free (sg->sg_adm); + free (sg->sg_passwd); + free (sg->sg_name); + free (sg); + return NULL; + } + } + sg->sg_adm[i] = NULL; + + for (i = 0; NULL != sgent->sg_mem[i]; i++); + /*@-mustfreeonly@*/ + sg->sg_mem = (char **) malloc ((i + 1) * sizeof (char *)); + /*@=mustfreeonly@*/ + if (NULL == sg->sg_mem) { + for (i = 0; NULL != sg->sg_adm[i]; i++) { + free (sg->sg_adm[i]); + } + free (sg->sg_adm); + free (sg->sg_passwd); + free (sg->sg_name); + free (sg); + return NULL; + } + for (i = 0; NULL != sgent->sg_mem[i]; i++) { + sg->sg_mem[i] = strdup (sgent->sg_mem[i]); + if (NULL == sg->sg_mem[i]) { + for (i = 0; NULL != sg->sg_mem[i]; i++) { + free (sg->sg_mem[i]); + } + free (sg->sg_mem); + for (i = 0; NULL != sg->sg_adm[i]; i++) { + free (sg->sg_adm[i]); + } + free (sg->sg_adm); + free (sg->sg_passwd); + free (sg->sg_name); + free (sg); + return NULL; + } + } + sg->sg_mem[i] = NULL; + + return sg; +} + +static /*@null@*/ /*@only@*/void *gshadow_dup (const void *ent) +{ + const struct sgrp *sg = ent; + + return __sgr_dup (sg); +} + +static void gshadow_free (/*@out@*/ /*@only@*/void *ent) +{ + struct sgrp *sg = ent; + + sgr_free (sg); +} + +void sgr_free (/*@out@*/ /*@only@*/struct sgrp *sgent) +{ + size_t i; + free (sgent->sg_name); + if (NULL != sgent->sg_passwd) { + memzero (sgent->sg_passwd, strlen (sgent->sg_passwd)); + free (sgent->sg_passwd); + } + for (i = 0; NULL != sgent->sg_adm[i]; i++) { + free (sgent->sg_adm[i]); + } + free (sgent->sg_adm); + for (i = 0; NULL != sgent->sg_mem[i]; i++) { + free (sgent->sg_mem[i]); + } + free (sgent->sg_mem); + free (sgent); +} + +static const char *gshadow_getname (const void *ent) +{ + const struct sgrp *gr = ent; + + return gr->sg_name; +} + +static void *gshadow_parse (const char *line) +{ + return (void *) sgetsgent (line); +} + +static int gshadow_put (const void *ent, FILE * file) +{ + const struct sgrp *sg = ent; + + if ( (NULL == sg) + || (valid_field (sg->sg_name, ":\n") == -1) + || (valid_field (sg->sg_passwd, ":\n") == -1)) { + return -1; + } + + /* FIXME: fail also if sg->sg_adm == NULL ?*/ + if (NULL != sg->sg_adm) { + size_t i; + for (i = 0; NULL != sg->sg_adm[i]; i++) { + if (valid_field (sg->sg_adm[i], ",:\n") == -1) { + return -1; + } + } + } + + /* FIXME: fail also if sg->sg_mem == NULL ?*/ + if (NULL != sg->sg_mem) { + size_t i; + for (i = 0; NULL != sg->sg_mem[i]; i++) { + if (valid_field (sg->sg_mem[i], ",:\n") == -1) { + return -1; + } + } + } + + return (putsgent (sg, file) == -1) ? -1 : 0; +} + +static struct commonio_ops gshadow_ops = { + gshadow_dup, + gshadow_free, + gshadow_getname, + gshadow_parse, + gshadow_put, + fgetsx, + fputsx, + NULL, /* open_hook */ + NULL /* close_hook */ +}; + +static struct commonio_db gshadow_db = { + SGROUP_FILE, /* filename */ + &gshadow_ops, /* ops */ + NULL, /* fp */ +#ifdef WITH_SELINUX + NULL, /* scontext */ +#endif + 0400, /* st_mode */ + 0, /* st_uid */ + 0, /* st_gid */ + NULL, /* head */ + NULL, /* tail */ + NULL, /* cursor */ + false, /* changed */ + false, /* isopen */ + false, /* locked */ + false, /* readonly */ + false /* setname */ +}; + +int sgr_setdbname (const char *filename) +{ + return commonio_setname (&gshadow_db, filename); +} + +/*@observer@*/const char *sgr_dbname (void) +{ + return gshadow_db.filename; +} + +bool sgr_file_present (void) +{ + if (getdef_bool ("FORCE_SHADOW")) + return true; + return commonio_present (&gshadow_db); +} + +int sgr_lock (void) +{ + return commonio_lock (&gshadow_db); +} + +int sgr_open (int mode) +{ + return commonio_open (&gshadow_db, mode); +} + +/*@observer@*/ /*@null@*/const struct sgrp *sgr_locate (const char *name) +{ + return commonio_locate (&gshadow_db, name); +} + +int sgr_update (const struct sgrp *sg) +{ + return commonio_update (&gshadow_db, (const void *) sg); +} + +int sgr_remove (const char *name) +{ + return commonio_remove (&gshadow_db, name); +} + +int sgr_rewind (void) +{ + return commonio_rewind (&gshadow_db); +} + +/*@null@*/const struct sgrp *sgr_next (void) +{ + return commonio_next (&gshadow_db); +} + +int sgr_close (void) +{ + return commonio_close (&gshadow_db); +} + +int sgr_unlock (void) +{ + return commonio_unlock (&gshadow_db); +} + +void __sgr_set_changed (void) +{ + gshadow_db.changed = true; +} + +/*@dependent@*/ /*@null@*/struct commonio_entry *__sgr_get_head (void) +{ + return gshadow_db.head; +} + +void __sgr_del_entry (const struct commonio_entry *ent) +{ + commonio_del_entry (&gshadow_db, ent); +} + +/* Sort with respect to group ordering. */ +int sgr_sort () +{ + return commonio_sort_wrt (&gshadow_db, __gr_get_db ()); +} +#else +extern int errno; /* warning: ANSI C forbids an empty source file */ +#endif -- cgit v1.2.3