diff options
Diffstat (limited to 'lib/libc/posix1e/acl_from_text.c')
| -rw-r--r-- | lib/libc/posix1e/acl_from_text.c | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/lib/libc/posix1e/acl_from_text.c b/lib/libc/posix1e/acl_from_text.c deleted file mode 100644 index a71bbca..0000000 --- a/lib/libc/posix1e/acl_from_text.c +++ /dev/null @@ -1,246 +0,0 @@ -/*- - * Copyright (c) 1999 Robert N. M. Watson - * 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. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ -/* - * acl_from_text: convert a text-form ACL from a string to an acl_t - */ - -#include <sys/types.h> -#include <sys/acl.h> -#include <sys/errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "acl_support.h" - -enum PARSE_MODE { - PM_BASE, /* initial, begin line, or after , */ - PM_QUALIFIER, /* in qualifier field */ - PM_PERM, /* in permission field */ - PM_COMMENT, /* in comment */ -}; - -static char * -string_skip_whitespace(char *string) -{ - - while (*string && ((*string == ' ') || (*string == '\t'))) { - string++; - } - return (string); -} - -static void -string_trim_trailing_whitespace(char *string) -{ - char *end; - - if (*string == '\0') - return; - - end = string + strlen(string) - 1; - - while (end != string) { - if ((*end == ' ') || (*end == '\t')) { - *end = '\0'; - end--; - } else { - return; - } - } - - return; -} - -acl_tag_t -acl_string_to_tag(char *tag, char *qualifier) -{ - - if (*qualifier == '\0') { - if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) { - return (ACL_USER_OBJ); - } else - if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) { - return (ACL_GROUP_OBJ); - } else - if ((!strcmp(tag, "mask")) || (!strcmp(tag, "m"))) { - return (ACL_MASK); - } else - if ((!strcmp(tag, "other")) || (!strcmp(tag, "o"))) { - return (ACL_OTHER); - } else - return(-1); - } else { - if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) { - return(ACL_USER); - } else - if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) { - return(ACL_GROUP); - } else - return(-1); - } -} - -/* - * acl_from_text -- convert a string into an ACL - * postpone most validity checking until the end and cal acl_valid to do - * that. - */ -acl_t -acl_from_text(const char *buf_p) -{ - acl_tag_t t; - acl_perm_t p; - acl_t acl; - uid_t id; - char *mybuf_p, *line, *cur, *notcomment, *comment, *entry; - char *tag, *qualifier, *permission; - int error; - - /* local copy we can mess up */ - mybuf_p = strdup(buf_p); - if (!mybuf_p) { - errno = ENOMEM; - return(0); - } - - acl = acl_init(3); - if (!acl) { - free(mybuf_p); - errno = ENOMEM; - return(0); - } - - /* outer loop: delimit at \n boundaries */ - cur = mybuf_p; - while ((line = strsep(&cur, "\n"))) { - /* now split the line on the first # to strip out comments */ - comment = line; - notcomment = strsep(&comment, "#"); - - /* inner loop: delimit at , boundaries */ - while ((entry = strsep(¬comment, ","))) { - /* now split into three :-delimited fields */ - tag = strsep(&entry, ":"); - if (!tag) { - /* printf("no tag\n"); */ - errno = EINVAL; - goto error_label; - } - tag = string_skip_whitespace(tag); - if ((*tag == '\0') && (!entry)) { - /* - * is an entirely comment line, skip to next - * comma - */ - continue; - } - string_trim_trailing_whitespace(tag); - - qualifier = strsep(&entry, ":"); - if (!qualifier) { - /* printf("no qualifier\n"); */ - errno = EINVAL; - goto error_label; - } - qualifier = string_skip_whitespace(qualifier); - string_trim_trailing_whitespace(qualifier); - - permission = strsep(&entry, ":"); - if ((!permission) || (entry)) { - /* printf("no permission, or more stuff\n"); */ - errno = EINVAL; - goto error_label; - } - permission = string_skip_whitespace(permission); - string_trim_trailing_whitespace(permission); - - /* printf("[%s/%s/%s]\n", tag, qualifier, - permission); */ - - t = acl_string_to_tag(tag, qualifier); - if (t == -1) { - errno = EINVAL; - goto error_label; - } - - error = acl_string_to_perm(permission, &p); - if (error == -1) { - errno = EINVAL; - goto error_label; - } - - switch(t) { - case ACL_USER_OBJ: - case ACL_GROUP_OBJ: - case ACL_MASK: - case ACL_OTHER: - if (*qualifier != '\0') { - errno = EINVAL; - goto error_label; - } - id = 0; - break; - - case ACL_USER: - case ACL_GROUP: - error = acl_name_to_id(t, qualifier, &id); - if (error == -1) - goto error_label; - break; - - default: - errno = EINVAL; - goto error_label; - } - - error = acl_add_entry(acl, t, id, p); - if (error == -1) - goto error_label; - } - } - -#if 0 - /* XXX should we only return ACLs valid according to acl_valid? */ - /* verify validity of the ACL we read in */ - if (acl_valid(acl) == -1) { - errno = EINVAL; - goto error_label; - } -#endif - - return(acl); - -error_label: - acl_free(acl); - free(mybuf_p); - return(0); -} - - - |
