1aa015c8eSEdward Tomasz Napierala /*- 2d915a14eSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3d915a14eSPedro F. Giffuni * 4aa015c8eSEdward Tomasz Napierala * Copyright (c) 2008, 2009 Edward Tomasz Napierała <trasz@FreeBSD.org> 5aa015c8eSEdward Tomasz Napierala * 6aa015c8eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 7aa015c8eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 8aa015c8eSEdward Tomasz Napierala * are met: 9aa015c8eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 10aa015c8eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 11aa015c8eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 12aa015c8eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 13aa015c8eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 14aa015c8eSEdward Tomasz Napierala * 15aa015c8eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16aa015c8eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17aa015c8eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18aa015c8eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19aa015c8eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20aa015c8eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21aa015c8eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22aa015c8eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23aa015c8eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24aa015c8eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25aa015c8eSEdward Tomasz Napierala * SUCH DAMAGE. 26aa015c8eSEdward Tomasz Napierala */ 27aa015c8eSEdward Tomasz Napierala 28aa015c8eSEdward Tomasz Napierala #include <sys/cdefs.h> 29aa015c8eSEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 30aa015c8eSEdward Tomasz Napierala 31aa015c8eSEdward Tomasz Napierala #include <stdio.h> 32aa015c8eSEdward Tomasz Napierala #include <stdlib.h> 33aa015c8eSEdward Tomasz Napierala #include <string.h> 34aa015c8eSEdward Tomasz Napierala #include <assert.h> 35aa015c8eSEdward Tomasz Napierala #include <err.h> 36aa015c8eSEdward Tomasz Napierala #include <sys/acl.h> 37aa015c8eSEdward Tomasz Napierala #include "acl_support.h" 38aa015c8eSEdward Tomasz Napierala 39aa015c8eSEdward Tomasz Napierala struct flagnames_struct { 40aa015c8eSEdward Tomasz Napierala uint32_t flag; 41aa015c8eSEdward Tomasz Napierala const char *name; 42aa015c8eSEdward Tomasz Napierala char letter; 43aa015c8eSEdward Tomasz Napierala }; 44aa015c8eSEdward Tomasz Napierala 45aa015c8eSEdward Tomasz Napierala struct flagnames_struct a_flags[] = 46aa015c8eSEdward Tomasz Napierala {{ ACL_ENTRY_FILE_INHERIT, "file_inherit", 'f'}, 47aa015c8eSEdward Tomasz Napierala { ACL_ENTRY_DIRECTORY_INHERIT, "dir_inherit", 'd'}, 48aa015c8eSEdward Tomasz Napierala { ACL_ENTRY_INHERIT_ONLY, "inherit_only", 'i'}, 49aa015c8eSEdward Tomasz Napierala { ACL_ENTRY_NO_PROPAGATE_INHERIT, "no_propagate", 'n'}, 50aa015c8eSEdward Tomasz Napierala { ACL_ENTRY_SUCCESSFUL_ACCESS, "successfull_access", 'S'}, 51aa015c8eSEdward Tomasz Napierala { ACL_ENTRY_FAILED_ACCESS, "failed_access", 'F'}, 5228ffe927SXin LI { ACL_ENTRY_INHERITED, "inherited", 'I' }, 53aa015c8eSEdward Tomasz Napierala /* 54aa015c8eSEdward Tomasz Napierala * There is no ACE_IDENTIFIER_GROUP here - SunOS does not show it 55aa015c8eSEdward Tomasz Napierala * in the "flags" field. There is no ACE_OWNER, ACE_GROUP or 56aa015c8eSEdward Tomasz Napierala * ACE_EVERYONE either, for obvious reasons. 57aa015c8eSEdward Tomasz Napierala */ 58aa015c8eSEdward Tomasz Napierala { 0, 0, 0}}; 59aa015c8eSEdward Tomasz Napierala 60aa015c8eSEdward Tomasz Napierala struct flagnames_struct a_access_masks[] = 61aa015c8eSEdward Tomasz Napierala {{ ACL_READ_DATA, "read_data", 'r'}, 62aa015c8eSEdward Tomasz Napierala { ACL_WRITE_DATA, "write_data", 'w'}, 63aa015c8eSEdward Tomasz Napierala { ACL_EXECUTE, "execute", 'x'}, 64aa015c8eSEdward Tomasz Napierala { ACL_APPEND_DATA, "append_data", 'p'}, 65aa015c8eSEdward Tomasz Napierala { ACL_DELETE_CHILD, "delete_child", 'D'}, 66aa015c8eSEdward Tomasz Napierala { ACL_DELETE, "delete", 'd'}, 67aa015c8eSEdward Tomasz Napierala { ACL_READ_ATTRIBUTES, "read_attributes", 'a'}, 68aa015c8eSEdward Tomasz Napierala { ACL_WRITE_ATTRIBUTES, "write_attributes", 'A'}, 69aa015c8eSEdward Tomasz Napierala { ACL_READ_NAMED_ATTRS, "read_xattr", 'R'}, 70aa015c8eSEdward Tomasz Napierala { ACL_WRITE_NAMED_ATTRS, "write_xattr", 'W'}, 71aa015c8eSEdward Tomasz Napierala { ACL_READ_ACL, "read_acl", 'c'}, 72aa015c8eSEdward Tomasz Napierala { ACL_WRITE_ACL, "write_acl", 'C'}, 73aa015c8eSEdward Tomasz Napierala { ACL_WRITE_OWNER, "write_owner", 'o'}, 74aa015c8eSEdward Tomasz Napierala { ACL_SYNCHRONIZE, "synchronize", 's'}, 75181b4eebSEdward Tomasz Napierala { ACL_FULL_SET, "full_set", '\0'}, 76181b4eebSEdward Tomasz Napierala { ACL_MODIFY_SET, "modify_set", '\0'}, 77181b4eebSEdward Tomasz Napierala { ACL_READ_SET, "read_set", '\0'}, 78181b4eebSEdward Tomasz Napierala { ACL_WRITE_SET, "write_set", '\0'}, 79aa015c8eSEdward Tomasz Napierala { 0, 0, 0}}; 80aa015c8eSEdward Tomasz Napierala 81aa015c8eSEdward Tomasz Napierala static const char * 82aa015c8eSEdward Tomasz Napierala format_flag(uint32_t *var, const struct flagnames_struct *flags) 83aa015c8eSEdward Tomasz Napierala { 84aa015c8eSEdward Tomasz Napierala 85513004a2SPedro F. Giffuni for (; flags->name != NULL; flags++) { 86aa015c8eSEdward Tomasz Napierala if ((flags->flag & *var) == 0) 87aa015c8eSEdward Tomasz Napierala continue; 88aa015c8eSEdward Tomasz Napierala 89aa015c8eSEdward Tomasz Napierala *var &= ~flags->flag; 90aa015c8eSEdward Tomasz Napierala return (flags->name); 91aa015c8eSEdward Tomasz Napierala } 92aa015c8eSEdward Tomasz Napierala 93aa015c8eSEdward Tomasz Napierala return (NULL); 94aa015c8eSEdward Tomasz Napierala } 95aa015c8eSEdward Tomasz Napierala 96aa015c8eSEdward Tomasz Napierala static int 97aa015c8eSEdward Tomasz Napierala format_flags_verbose(char *str, size_t size, uint32_t var, 98aa015c8eSEdward Tomasz Napierala const struct flagnames_struct *flags) 99aa015c8eSEdward Tomasz Napierala { 100aa015c8eSEdward Tomasz Napierala size_t off = 0; 101aa015c8eSEdward Tomasz Napierala const char *tmp; 102aa015c8eSEdward Tomasz Napierala 103aa015c8eSEdward Tomasz Napierala while ((tmp = format_flag(&var, flags)) != NULL) { 104aa015c8eSEdward Tomasz Napierala off += snprintf(str + off, size - off, "%s/", tmp); 105aa015c8eSEdward Tomasz Napierala assert (off < size); 106aa015c8eSEdward Tomasz Napierala } 107aa015c8eSEdward Tomasz Napierala 108aa015c8eSEdward Tomasz Napierala /* If there were any flags added... */ 109aa015c8eSEdward Tomasz Napierala if (off > 0) { 110aa015c8eSEdward Tomasz Napierala off--; 111aa015c8eSEdward Tomasz Napierala /* ... then remove the last slash. */ 112aa015c8eSEdward Tomasz Napierala assert(str[off] == '/'); 113aa015c8eSEdward Tomasz Napierala } 114aa015c8eSEdward Tomasz Napierala 115aa015c8eSEdward Tomasz Napierala str[off] = '\0'; 116aa015c8eSEdward Tomasz Napierala 117aa015c8eSEdward Tomasz Napierala return (0); 118aa015c8eSEdward Tomasz Napierala } 119aa015c8eSEdward Tomasz Napierala 120aa015c8eSEdward Tomasz Napierala static int 121aa015c8eSEdward Tomasz Napierala format_flags_compact(char *str, size_t size, uint32_t var, 122aa015c8eSEdward Tomasz Napierala const struct flagnames_struct *flags) 123aa015c8eSEdward Tomasz Napierala { 124aa015c8eSEdward Tomasz Napierala size_t i; 125aa015c8eSEdward Tomasz Napierala 126181b4eebSEdward Tomasz Napierala for (i = 0; flags[i].letter != '\0'; i++) { 127aa015c8eSEdward Tomasz Napierala assert(i < size); 128aa015c8eSEdward Tomasz Napierala if ((flags[i].flag & var) == 0) 129aa015c8eSEdward Tomasz Napierala str[i] = '-'; 130aa015c8eSEdward Tomasz Napierala else 131aa015c8eSEdward Tomasz Napierala str[i] = flags[i].letter; 132aa015c8eSEdward Tomasz Napierala } 133aa015c8eSEdward Tomasz Napierala 134aa015c8eSEdward Tomasz Napierala str[i] = '\0'; 135aa015c8eSEdward Tomasz Napierala 136aa015c8eSEdward Tomasz Napierala return (0); 137aa015c8eSEdward Tomasz Napierala } 138aa015c8eSEdward Tomasz Napierala 139aa015c8eSEdward Tomasz Napierala static int 140aa015c8eSEdward Tomasz Napierala parse_flags_verbose(const char *strp, uint32_t *var, 141aa015c8eSEdward Tomasz Napierala const struct flagnames_struct *flags, const char *flags_name, 142aa015c8eSEdward Tomasz Napierala int *try_compact) 143aa015c8eSEdward Tomasz Napierala { 144aa015c8eSEdward Tomasz Napierala int i, found, ever_found = 0; 145*dd559118SAndrew Walker char *str, *flag, *to_free; 146aa015c8eSEdward Tomasz Napierala 147aa015c8eSEdward Tomasz Napierala str = strdup(strp); 148*dd559118SAndrew Walker to_free = str; 149aa015c8eSEdward Tomasz Napierala *try_compact = 0; 150aa015c8eSEdward Tomasz Napierala *var = 0; 151aa015c8eSEdward Tomasz Napierala 152aa015c8eSEdward Tomasz Napierala while (str != NULL) { 153aa015c8eSEdward Tomasz Napierala flag = strsep(&str, "/:"); 154aa015c8eSEdward Tomasz Napierala 155aa015c8eSEdward Tomasz Napierala found = 0; 156aa015c8eSEdward Tomasz Napierala for (i = 0; flags[i].name != NULL; i++) { 157aa015c8eSEdward Tomasz Napierala if (strcmp(flags[i].name, flag) == 0) { 158aa015c8eSEdward Tomasz Napierala *var |= flags[i].flag; 159aa015c8eSEdward Tomasz Napierala found = 1; 160aa015c8eSEdward Tomasz Napierala ever_found = 1; 161aa015c8eSEdward Tomasz Napierala } 162aa015c8eSEdward Tomasz Napierala } 163aa015c8eSEdward Tomasz Napierala 164aa015c8eSEdward Tomasz Napierala if (!found) { 165aa015c8eSEdward Tomasz Napierala if (ever_found) 166aa015c8eSEdward Tomasz Napierala warnx("malformed ACL: \"%s\" field contains " 167aa015c8eSEdward Tomasz Napierala "invalid flag \"%s\"", flags_name, flag); 168aa015c8eSEdward Tomasz Napierala else 169aa015c8eSEdward Tomasz Napierala *try_compact = 1; 170*dd559118SAndrew Walker free(to_free); 171aa015c8eSEdward Tomasz Napierala return (-1); 172aa015c8eSEdward Tomasz Napierala } 173aa015c8eSEdward Tomasz Napierala } 174aa015c8eSEdward Tomasz Napierala 175*dd559118SAndrew Walker free(to_free); 176aa015c8eSEdward Tomasz Napierala return (0); 177aa015c8eSEdward Tomasz Napierala } 178aa015c8eSEdward Tomasz Napierala 179aa015c8eSEdward Tomasz Napierala static int 180aa015c8eSEdward Tomasz Napierala parse_flags_compact(const char *str, uint32_t *var, 181aa015c8eSEdward Tomasz Napierala const struct flagnames_struct *flags, const char *flags_name) 182aa015c8eSEdward Tomasz Napierala { 183aa015c8eSEdward Tomasz Napierala int i, j, found; 184aa015c8eSEdward Tomasz Napierala 185aa015c8eSEdward Tomasz Napierala *var = 0; 186aa015c8eSEdward Tomasz Napierala 187aa015c8eSEdward Tomasz Napierala for (i = 0;; i++) { 188aa015c8eSEdward Tomasz Napierala if (str[i] == '\0') 189aa015c8eSEdward Tomasz Napierala return (0); 190aa015c8eSEdward Tomasz Napierala 191aa015c8eSEdward Tomasz Napierala /* Ignore minus signs. */ 192aa015c8eSEdward Tomasz Napierala if (str[i] == '-') 193aa015c8eSEdward Tomasz Napierala continue; 194aa015c8eSEdward Tomasz Napierala 195aa015c8eSEdward Tomasz Napierala found = 0; 196aa015c8eSEdward Tomasz Napierala 197aa015c8eSEdward Tomasz Napierala for (j = 0; flags[j].name != NULL; j++) { 198aa015c8eSEdward Tomasz Napierala if (flags[j].letter == str[i]) { 199aa015c8eSEdward Tomasz Napierala *var |= flags[j].flag; 200aa015c8eSEdward Tomasz Napierala found = 1; 201aa015c8eSEdward Tomasz Napierala break; 202aa015c8eSEdward Tomasz Napierala } 203aa015c8eSEdward Tomasz Napierala } 204aa015c8eSEdward Tomasz Napierala 205aa015c8eSEdward Tomasz Napierala if (!found) { 206aa015c8eSEdward Tomasz Napierala warnx("malformed ACL: \"%s\" field contains " 207aa015c8eSEdward Tomasz Napierala "invalid flag \"%c\"", flags_name, str[i]); 208aa015c8eSEdward Tomasz Napierala return (-1); 209aa015c8eSEdward Tomasz Napierala } 210aa015c8eSEdward Tomasz Napierala } 211aa015c8eSEdward Tomasz Napierala } 212aa015c8eSEdward Tomasz Napierala 213aa015c8eSEdward Tomasz Napierala int 214aa015c8eSEdward Tomasz Napierala _nfs4_format_flags(char *str, size_t size, acl_flag_t var, int verbose) 215aa015c8eSEdward Tomasz Napierala { 216aa015c8eSEdward Tomasz Napierala 217aa015c8eSEdward Tomasz Napierala if (verbose) 218aa015c8eSEdward Tomasz Napierala return (format_flags_verbose(str, size, var, a_flags)); 219aa015c8eSEdward Tomasz Napierala 220aa015c8eSEdward Tomasz Napierala return (format_flags_compact(str, size, var, a_flags)); 221aa015c8eSEdward Tomasz Napierala } 222aa015c8eSEdward Tomasz Napierala 223aa015c8eSEdward Tomasz Napierala int 224aa015c8eSEdward Tomasz Napierala _nfs4_format_access_mask(char *str, size_t size, acl_perm_t var, int verbose) 225aa015c8eSEdward Tomasz Napierala { 226aa015c8eSEdward Tomasz Napierala 227aa015c8eSEdward Tomasz Napierala if (verbose) 228aa015c8eSEdward Tomasz Napierala return (format_flags_verbose(str, size, var, a_access_masks)); 229aa015c8eSEdward Tomasz Napierala 230aa015c8eSEdward Tomasz Napierala return (format_flags_compact(str, size, var, a_access_masks)); 231aa015c8eSEdward Tomasz Napierala } 232aa015c8eSEdward Tomasz Napierala 233aa015c8eSEdward Tomasz Napierala int 234aa015c8eSEdward Tomasz Napierala _nfs4_parse_flags(const char *str, acl_flag_t *flags) 235aa015c8eSEdward Tomasz Napierala { 236aa015c8eSEdward Tomasz Napierala int error, try_compact; 237aa015c8eSEdward Tomasz Napierala int tmpflags; 238aa015c8eSEdward Tomasz Napierala 239aa015c8eSEdward Tomasz Napierala error = parse_flags_verbose(str, &tmpflags, a_flags, "flags", &try_compact); 240aa015c8eSEdward Tomasz Napierala if (error && try_compact) 241aa015c8eSEdward Tomasz Napierala error = parse_flags_compact(str, &tmpflags, a_flags, "flags"); 242aa015c8eSEdward Tomasz Napierala 243aa015c8eSEdward Tomasz Napierala *flags = tmpflags; 244aa015c8eSEdward Tomasz Napierala 245aa015c8eSEdward Tomasz Napierala return (error); 246aa015c8eSEdward Tomasz Napierala } 247aa015c8eSEdward Tomasz Napierala 248aa015c8eSEdward Tomasz Napierala int 249aa015c8eSEdward Tomasz Napierala _nfs4_parse_access_mask(const char *str, acl_perm_t *perms) 250aa015c8eSEdward Tomasz Napierala { 251aa015c8eSEdward Tomasz Napierala int error, try_compact; 252aa015c8eSEdward Tomasz Napierala int tmpperms; 253aa015c8eSEdward Tomasz Napierala 254aa015c8eSEdward Tomasz Napierala error = parse_flags_verbose(str, &tmpperms, a_access_masks, 255aa015c8eSEdward Tomasz Napierala "access permissions", &try_compact); 256aa015c8eSEdward Tomasz Napierala if (error && try_compact) 257aa015c8eSEdward Tomasz Napierala error = parse_flags_compact(str, &tmpperms, 258aa015c8eSEdward Tomasz Napierala a_access_masks, "access permissions"); 259aa015c8eSEdward Tomasz Napierala 260aa015c8eSEdward Tomasz Napierala *perms = tmpperms; 261aa015c8eSEdward Tomasz Napierala 262aa015c8eSEdward Tomasz Napierala return (error); 263aa015c8eSEdward Tomasz Napierala } 264