1178825Sdfr/* 2178825Sdfr * Copyright (c) 2005, PADL Software Pty Ltd. 3178825Sdfr * All rights reserved. 4178825Sdfr * 5178825Sdfr * Redistribution and use in source and binary forms, with or without 6178825Sdfr * modification, are permitted provided that the following conditions 7178825Sdfr * are met: 8178825Sdfr * 9178825Sdfr * 1. Redistributions of source code must retain the above copyright 10178825Sdfr * notice, this list of conditions and the following disclaimer. 11178825Sdfr * 12178825Sdfr * 2. Redistributions in binary form must reproduce the above copyright 13178825Sdfr * notice, this list of conditions and the following disclaimer in the 14178825Sdfr * documentation and/or other materials provided with the distribution. 15178825Sdfr * 16178825Sdfr * 3. Neither the name of PADL Software nor the names of its contributors 17178825Sdfr * may be used to endorse or promote products derived from this software 18178825Sdfr * without specific prior written permission. 19178825Sdfr * 20178825Sdfr * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND 21178825Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22178825Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23178825Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE 24178825Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25178825Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26178825Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27178825Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28178825Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29178825Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30178825Sdfr * SUCH DAMAGE. 31178825Sdfr */ 32178825Sdfr 33178825Sdfr#include "kcm_locl.h" 34178825Sdfr 35178825SdfrRCSID("$Id: cursor.c 17447 2006-05-05 10:52:01Z lha $"); 36178825Sdfr 37178825Sdfrkrb5_error_code 38178825Sdfrkcm_cursor_new(krb5_context context, 39178825Sdfr pid_t pid, 40178825Sdfr kcm_ccache ccache, 41178825Sdfr uint32_t *cursor) 42178825Sdfr{ 43178825Sdfr kcm_cursor **p; 44178825Sdfr krb5_error_code ret; 45178825Sdfr 46178825Sdfr *cursor = 0; 47178825Sdfr 48178825Sdfr KCM_ASSERT_VALID(ccache); 49178825Sdfr 50178825Sdfr HEIMDAL_MUTEX_lock(&ccache->mutex); 51178825Sdfr for (p = &ccache->cursors; *p != NULL; p = &(*p)->next) 52178825Sdfr ; 53178825Sdfr 54178825Sdfr *p = (kcm_cursor *)malloc(sizeof(kcm_cursor)); 55178825Sdfr if (*p == NULL) { 56178825Sdfr ret = KRB5_CC_NOMEM; 57178825Sdfr goto out; 58178825Sdfr } 59178825Sdfr 60178825Sdfr (*p)->pid = pid; 61178825Sdfr (*p)->key = ++ccache->n_cursor; 62178825Sdfr (*p)->credp = ccache->creds; 63178825Sdfr (*p)->next = NULL; 64178825Sdfr 65178825Sdfr *cursor = (*p)->key; 66178825Sdfr 67178825Sdfr ret = 0; 68178825Sdfr 69178825Sdfrout: 70178825Sdfr HEIMDAL_MUTEX_unlock(&ccache->mutex); 71178825Sdfr 72178825Sdfr return ret; 73178825Sdfr} 74178825Sdfr 75178825Sdfrkrb5_error_code 76178825Sdfrkcm_cursor_find(krb5_context context, 77178825Sdfr pid_t pid, 78178825Sdfr kcm_ccache ccache, 79178825Sdfr uint32_t key, 80178825Sdfr kcm_cursor **cursor) 81178825Sdfr{ 82178825Sdfr kcm_cursor *p; 83178825Sdfr krb5_error_code ret; 84178825Sdfr 85178825Sdfr KCM_ASSERT_VALID(ccache); 86178825Sdfr 87178825Sdfr if (key == 0) 88178825Sdfr return KRB5_CC_NOTFOUND; 89178825Sdfr 90178825Sdfr ret = KRB5_CC_END; 91178825Sdfr 92178825Sdfr HEIMDAL_MUTEX_lock(&ccache->mutex); 93178825Sdfr 94178825Sdfr for (p = ccache->cursors; p != NULL; p = p->next) { 95178825Sdfr if (p->key == key) { 96178825Sdfr if (p->pid != pid) 97178825Sdfr ret = KRB5_FCC_PERM; 98178825Sdfr else 99178825Sdfr ret = 0; 100178825Sdfr break; 101178825Sdfr } 102178825Sdfr } 103178825Sdfr 104178825Sdfr if (ret == 0) 105178825Sdfr *cursor = p; 106178825Sdfr 107178825Sdfr HEIMDAL_MUTEX_unlock(&ccache->mutex); 108178825Sdfr 109178825Sdfr return ret; 110178825Sdfr} 111178825Sdfr 112178825Sdfrkrb5_error_code 113178825Sdfrkcm_cursor_delete(krb5_context context, 114178825Sdfr pid_t pid, 115178825Sdfr kcm_ccache ccache, 116178825Sdfr uint32_t key) 117178825Sdfr{ 118178825Sdfr kcm_cursor **p; 119178825Sdfr krb5_error_code ret; 120178825Sdfr 121178825Sdfr KCM_ASSERT_VALID(ccache); 122178825Sdfr 123178825Sdfr if (key == 0) 124178825Sdfr return KRB5_CC_NOTFOUND; 125178825Sdfr 126178825Sdfr ret = KRB5_CC_END; 127178825Sdfr 128178825Sdfr HEIMDAL_MUTEX_lock(&ccache->mutex); 129178825Sdfr 130178825Sdfr for (p = &ccache->cursors; *p != NULL; p = &(*p)->next) { 131178825Sdfr if ((*p)->key == key) { 132178825Sdfr if ((*p)->pid != pid) 133178825Sdfr ret = KRB5_FCC_PERM; 134178825Sdfr else 135178825Sdfr ret = 0; 136178825Sdfr break; 137178825Sdfr } 138178825Sdfr } 139178825Sdfr 140178825Sdfr if (ret == 0) { 141178825Sdfr kcm_cursor *x = *p; 142178825Sdfr 143178825Sdfr *p = x->next; 144178825Sdfr free(x); 145178825Sdfr } 146178825Sdfr 147178825Sdfr HEIMDAL_MUTEX_unlock(&ccache->mutex); 148178825Sdfr 149178825Sdfr return ret; 150178825Sdfr} 151178825Sdfr 152