src/server/daemon/acl.c

Thu, 11 Jul 2013 14:21:23 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Thu, 11 Jul 2013 14:21:23 +0200
changeset 87
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parent 73
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child 93
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permissions
-rw-r--r--

fixed pathcheck behavior

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2013 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdio.h>
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30 #include <stdlib.h>
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31 #include <unistd.h>
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32
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33 #include "../util/util.h"
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34 #include "../util/pool.h"
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35 #include "../safs/auth.h"
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36 #include "log.h"
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37 #include "acl.h"
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38
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39 void acllist_createhandle(Session *sn, Request *rq) {
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40 ACLListHandle *handle = pool_malloc(sn->pool, sizeof(ACLListHandle));
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41 handle->defaultauthdb = NULL;
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42 handle->listhead = NULL;
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43 handle->listtail = NULL;
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44 rq->acllist = handle;
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45 }
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46
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47 /*
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48 * append or prepend an ACL
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49 */
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50 void acllist_add(Session *sn, Request *rq, ACLList *acl, int append) {
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51 if(!rq->acllist) {
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52 acllist_createhandle(sn, rq);
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53 }
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54 ACLListHandle *list = rq->acllist;
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55
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56 if(!list->defaultauthdb && acl->authdb) {
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57 list->defaultauthdb = acl->authdb;
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58 }
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59
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60 ACLListElm *elm = pool_malloc(sn->pool, sizeof(ACLListElm));
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61 elm->acl = acl;
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62 elm->next = NULL;
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63 if(list->listhead == NULL) {
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64 list->listhead = elm;
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65 list->listtail = elm;
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66 } else {
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67 if(append) {
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68 list->listtail->next = elm;
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69 list->listtail = elm;
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70 } else {
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71 elm->next = list->listhead;
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72 list->listhead = elm;
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73 }
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74 }
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75 }
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76
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77 void acllist_append(Session *sn, Request *rq, ACLList *acl) {
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78 acllist_add(sn, rq, acl, 1);
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79 }
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80
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81 void acllist_prepend(Session *sn, Request *rq, ACLList *acl) {
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82 acllist_add(sn, rq, acl, 0);
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83 }
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84
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85 uint32_t acl_oflag2mask(int oflags) {
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86 /* TODO:
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87 * maybe there is a plattform where O_RDWR is not O_RDONLY | O_WRONLY
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88 */
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89 uint32_t access_mask = 0;
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90 if((oflags & O_RDONLY) == O_RDONLY) {
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91 access_mask |= ACL_READ_DATA;
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92 }
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93 if((oflags & O_WRONLY) == O_WRONLY) {
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94 access_mask |= ACL_WRITE_DATA;
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95 }
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96 return access_mask;
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97 }
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98
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99 User* acllist_getuser(Session *sn, Request *rq, ACLListHandle *list) {
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100 if(!sn || !rq || !list) {
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101 return NULL;
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102 }
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103
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104 // get user
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105 User *user = NULL;
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106 if(list->defaultauthdb) {
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107 char *usr;
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108 char *pw;
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109 if(!basicauth_getuser(sn, rq, &usr, &pw)) {
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110 int pwok;
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111 user = authdb_get_and_verify(list->defaultauthdb, usr, pw, &pwok);
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112 if(!user) {
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113 // wrong user or wrong password
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114 return NULL;
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115 }
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116 // ok - user is authenticated
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117 }
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118 }
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119
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120 return user;
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121 }
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122
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123 void acl_set_error_status(Session *sn, Request *rq, ACLList *acl, User *user) {
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124 if(sn == NULL || rq == NULL) {
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125 return;
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126 }
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127
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128 if(!user) {
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129 char *value = NULL;
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130 if(acl->authprompt) {
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131 size_t realmlen = strlen(acl->authprompt);
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132 size_t len = realmlen + 16;
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133 value = pool_malloc(sn->pool, len);
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134 if(value) {
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135 snprintf(
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136 value,
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137 len,
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138 "Basic realm=\"%s\"",
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139 acl->authprompt);
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140 }
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141 }
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142 if(!value) {
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143 value = "Basic realm=\"login\"";
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144 }
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145 pblock_nvinsert("www-authenticate", value, rq->srvhdrs);
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146 protocol_status(sn, rq, PROTOCOL_UNAUTHORIZED, NULL);
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147 } else {
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148 protocol_status(sn, rq, PROTOCOL_FORBIDDEN, NULL);
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149 }
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150 }
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151
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152 int acl_evaluate(Session *sn, Request *rq, int access_mask) {
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153 ACLListHandle *list = rq->acllist;
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154 if(!list) {
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155 return REQ_PROCEED;
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156 }
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157
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158 // we combine access_mask with the required access rights
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159 access_mask |= rq->aclreqaccess;
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160
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161 // get user
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162 User *user = acllist_getuser(sn, rq, list);
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163
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164 // evalutate all ACLs
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165 ACLList *acl = acl_evallist(list, user, access_mask, NULL);
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166 if(acl) {
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167 acl_set_error_status(sn, rq, acl, user);
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168 // TODO: don't free the user here
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169 if(user) {
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170 user->free(user);
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171 }
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172 return REQ_ABORTED;
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173 }
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174
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175 // access allowed, we can free the user
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176 if(user) {
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177 user->free(user);
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178 }
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179
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180 return REQ_PROCEED;
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181 }
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182
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183 ACLList* acl_evallist(
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184 ACLListHandle *list,
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185 User *user,
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186 int access_mask,
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187 ACLList **externacl)
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188 {
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189 if(!list) {
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190 return NULL;
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191 }
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192 if(externacl) {
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193 *externacl = NULL;
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194 }
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195
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196 // evaluate each acl until one denies access
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197 ACLListElm *elm = list->listhead;
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198 while(elm) {
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199 ACLList *acl = elm->acl;
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200 if(acl->isextern) {
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201 // set externacl to the first external acl
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202 if(externacl && *externacl == NULL) {
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203 *externacl = acl;
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204 }
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205 } else if(!acl->check(acl, user, access_mask)) {
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206 // the acl denies access
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207 return acl;
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208 }
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209 elm = elm->next;
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210 }
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211
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212 // ok - all acls allowed access
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213
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214 return NULL;
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215 }
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216
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217 int wsacl_affects_user(WSAce *ace, User *user) {
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218 int check_access = 0;
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219
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220 /*
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221 * an ace can affect
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222 * a named user or group (ace->who is set)
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223 * the owner of the resource (ACL_OWNER is set)
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224 * the owning group of the resource (ACL_GROUP is set)
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225 * everyone (ACL_EVERYONE is set)
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226 *
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227 * Only one of this conditions should be true. The behavior on
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228 * illegal flag combination is undefined. We assume that the acls
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229 * are created correctly by the configuration loader.
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230 */
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231
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232 if(ace->who && user) {
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233 // this ace is defined for a named user or group
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234 if((ace->flags & ACL_IDENTIFIER_GROUP) == ACL_IDENTIFIER_GROUP) {
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235 if(user->check_group(user, ace->who)) {
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236 // the user is in the group
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237 check_access = 1;
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238 }
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239 } else {
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240 if(!strcmp(user->name, ace->who)) {
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241 check_access = 1;
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242 }
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243 }
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244 } else if((ace->flags & ACL_OWNER) == ACL_OWNER) {
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245 // TODO
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246 } else if((ace->flags & ACL_GROUP) == ACL_GROUP) {
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247 // TODO
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248 } else if((ace->flags & ACL_EVERYONE) == ACL_EVERYONE) {
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249 check_access = 1;
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250 }
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251
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252 return check_access;
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253 }
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254
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255 int wsacl_check(WSAcl *acl, User *user, int access_mask) {
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256 int allow = 0;
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257 uint32_t allowed_access = 0;
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258 // check each access control entry
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259 for(int i=0;i<acl->acenum;i++) {
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260 WSAce *ace = acl->ace[i];
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261 if(wsacl_affects_user(ace, user)) {
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262 if(ace->type == ACL_TYPE_ALLOWED) {
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263 // add all new access rights
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264 allowed_access |= (access_mask & ace->access_mask);
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265 // check if we have all requested rights
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266 if((allowed_access & access_mask) == access_mask) {
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267 allow = 1;
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268 break;
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269 }
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270 } else {
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271 // ACL_TYPE_DENIED
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272
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273 if((ace->access_mask & access_mask) != 0) {
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274 // access denied
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275 break;
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276 }
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277 }
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278 }
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279 }
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280
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281 // TODO: events
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282
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283 return allow; // allow is 0, if no ace set it to 1
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284 }
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285
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286
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287 /* filesystem acl functions */
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288
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289 #if defined (__SVR4) && defined (__sun)
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290
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291 #include <sys/acl.h>
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292
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293 int solaris_acl_check(
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294 char *path,
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295 struct stat *s,
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296 uint32_t mask,
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297 uid_t uid,
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298 gid_t gid);
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299 int solaris_acl_affects_user(
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300 ace_t *ace,
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301 uid_t uid,
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302 gid_t gid,
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303 uid_t owner,
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304 gid_t owninggroup);
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305
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diff changeset
306 int fs_acl_check(SysACL *acl, User *user, char *path, uint32_t access_mask) {
66442f81f823 supports file system ACLs on Solaris
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diff changeset
307 sstr_t p;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
308 if(path[0] != '/') {
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
309 size_t n = 128;
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
310 char *cwd = malloc(n);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
311 while(!getcwd(cwd, n)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
312 if(errno == ERANGE) {
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
313 n *= 2;
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
314 cwd = realloc(cwd, n);
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
315 } else {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
316 free(cwd);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
317 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
318 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
319 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
320 sstr_t wd = sstr(cwd);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
321 sstr_t pp = sstr(path);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
322 p.length = wd.length + pp.length + 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
323 p.ptr = malloc(p.length + 1);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
324 p = sstrncat(3, p, wd, sstrn("/", 1), pp);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
325 p.ptr[p.length] = '\0';
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
326 } else {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
327 p = sstrdup(sstr(path));
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
328 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
329 if(p.ptr[p.length-1] == '/') {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
330 p.ptr[p.length-1] = 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
331 p.length--;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
332 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
333
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
334 // get uid/gid
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
335 struct passwd pw;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
336 if(user) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
337 char *pwbuf = malloc(DEF_PWBUF);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
338 if(pwbuf == NULL) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
339 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
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parents: 54
diff changeset
340 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
341 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
342 if(!util_getpwnam(user->name, &pw, pwbuf, DEF_PWBUF)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
343 free(pwbuf);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
344 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
345 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
346 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
347 free(pwbuf);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
348 acl->user_uid = pw.pw_uid;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
349 acl->user_gid = pw.pw_gid;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
350 } else {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
351 acl->user_uid = -1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
352 acl->user_gid = -1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
353 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
354
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
355 // translate access_mask
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
356 uint32_t mask = 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
357 if((access_mask & ACL_READ_DATA) == ACL_READ_DATA) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
358 mask |= ACE_READ_DATA;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
359 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
360 if((access_mask & ACL_WRITE_DATA) == ACL_WRITE_DATA) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
361 mask |= ACE_WRITE_DATA;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
362 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
363 if((access_mask & ACL_ADD_FILE) == ACL_ADD_FILE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
364 mask |= ACE_ADD_FILE;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
365 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
366 if((access_mask & ACL_READ_XATTR) == ACL_READ_XATTR) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
367 mask |= ACE_READ_NAMED_ATTRS;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
368 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
369 if((access_mask & ACL_WRITE_XATTR) == ACL_WRITE_XATTR) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
370 mask |= ACE_WRITE_NAMED_ATTRS;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
371 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
372 if((access_mask & ACL_EXECUTE) == ACL_EXECUTE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
373 mask |= ACE_EXECUTE;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
374 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
375 if((access_mask & ACL_DELETE) == ACL_DELETE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
376 mask |= ACE_DELETE_CHILD;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
377 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
378 if((access_mask & ACL_READ_ATTRIBUTES) == ACL_READ_ATTRIBUTES) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
379 mask |= ACE_READ_ATTRIBUTES;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
380 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
381 if((access_mask & ACL_WRITE_ATTRIBUTES) == ACL_WRITE_ATTRIBUTES) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
382 mask |= ACE_WRITE_ATTRIBUTES;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
383 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
384 if((access_mask & ACL_LIST) == ACL_LIST) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
385 mask |= ACE_LIST_DIRECTORY;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
386 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
387 if((access_mask & ACL_READ_ACL) == ACL_READ_ACL) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
388 mask |= ACE_READ_ACL;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
389 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
390 if((access_mask & ACL_WRITE_ACL) == ACL_WRITE_ACL) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
391 mask |= ACE_WRITE_ACL;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
392 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
393 if((access_mask & ACL_WRITE_OWNER) == ACL_WRITE_OWNER) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
394 mask |= ACE_WRITE_OWNER;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
395 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
396 if((access_mask & ACL_SYNCHRONIZE) == ACL_SYNCHRONIZE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
397 mask |= ACE_SYNCHRONIZE;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
398 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
399
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
400 /*
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
401 * If the vfs wants to create new files, path does not name an existing
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
402 * file. In this case, we check if the user has the ACE_ADD_FILE
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
403 * permission for the parent directory
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
404 */
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
405 struct stat s;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
406 if(stat(p.ptr, &s)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
407 if(errno != ENOENT) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
408 perror("fs_acl_check: stat");
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
409 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
410 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
411 } else {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
412 mask = ACE_ADD_FILE;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
413 p = util_path_remove_last(p);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
414 if(stat(p.ptr, &s)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
415 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
416 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
417 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
418 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
419 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
420
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
421 /*
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
422 * perform a acl check for the path and each parent directory
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
423 * we don't check the file system root
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
424 *
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
425 * after the first check, we check only search permission for the
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
426 * directories
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
427 */
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
428 if(!solaris_acl_check(p.ptr, &s, mask, pw.pw_uid, pw.pw_gid)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
429 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
430 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
431 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
432
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
433 p = util_path_remove_last(p);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
434 mask = ACE_LIST_DIRECTORY;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
435 while(p.length > 1) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
436 if(stat(p.ptr, &s)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
437 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
438 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
439 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
440 if(!solaris_acl_check(p.ptr, &s, mask, pw.pw_uid, pw.pw_gid)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
441 free(p.ptr);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
442 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
443 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
444
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
445 // cut the last file name from the path
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
446 p = util_path_remove_last(p);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
447 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
448
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
449
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
450 return 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
451 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
452
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
453 int solaris_acl_check(
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
454 char *path,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
455 struct stat *s,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
456 uint32_t mask,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
457 uid_t uid,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
458 gid_t gid)
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
459 {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
460 //printf("solaris_acl_check %s\n", path);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
461
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
462 int nace = acl(path, ACE_GETACLCNT, 0, NULL);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
463 if(nace == -1) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
464 perror("acl: ACE_GETACLCNT");
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
465 // TODO: log error
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
466 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
467 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
468 ace_t *aces = calloc(nace, sizeof(ace_t));
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
469 if(acl(path, ACE_GETACL, nace, aces) == 1) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
470 perror("acl: ACE_GETACL");
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
471 // TODO: log error
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
472 free(aces);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
473 return 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
474 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
475
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
476 int allow = 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
477 uint32_t allowed_access = 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
478 for(int i=0;i<nace;i++) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
479 ace_t ace = aces[i];
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
480 if(solaris_acl_affects_user(&ace, uid, gid, s->st_uid, s->st_gid)) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
481 if(ace.a_type == ACE_ACCESS_ALLOWED_ACE_TYPE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
482 // add all new access rights
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
483 allowed_access |= (mask & ace.a_access_mask);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
484 // check if we have all requested rights
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
485 if((allowed_access & mask) == mask) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
486 allow = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
487 break;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
488 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
489 } else if(ace.a_type == ACE_ACCESS_DENIED_ACE_TYPE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
490 // ACL_TYPE_DENIED
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
491
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
492 if((ace.a_access_mask & mask) != 0) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
493 // access denied
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
494 break;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
495 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
496 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
497 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
498 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
499
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
500 free(aces);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
501
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
502 //printf("return %d\n", allow);
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
503 return allow;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
504 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
505
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
506 int solaris_acl_affects_user(
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
507 ace_t *ace,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
508 uid_t uid,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
509 gid_t gid,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
510 uid_t owner,
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
511 gid_t owninggroup)
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
512 {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
513 /*
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
514 * mostly the same as wsacl_affects_user
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
515 */
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
516
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
517 int check_access = 0;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
518
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
519 if((ace->a_flags & ACE_OWNER) == ACE_OWNER) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
520 if(uid == owner) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
521 check_access = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
522 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
523 } else if((ace->a_flags & ACE_GROUP) == ACE_GROUP) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
524 if(gid == owninggroup) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
525 check_access = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
526 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
527 } else if((ace->a_flags & ACE_EVERYONE) == ACE_EVERYONE) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
528 check_access = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
529 } else if(ace->a_who != -1 && uid != 0) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
530 // this ace is defined for a named user or group
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
531 if((ace->a_flags & ACE_IDENTIFIER_GROUP) == ACE_IDENTIFIER_GROUP) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
532 // TODO: check all groups
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
533 if(ace->a_who == gid) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
534 // the user is in the group
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
535 check_access = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
536 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
537 } else {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
538 if(ace->a_who == uid) {
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
539 check_access = 1;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
540 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
541 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
542 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
543
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
544 return check_access;
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
545 }
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
546
73
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
547 void fs_acl_finish() {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
548
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
549 }
63
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
550
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
551 #endif
66442f81f823 supports file system ACLs on Solaris
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 54
diff changeset
552
69
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
553 /*
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
554 * generic code for all non acl unices
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
555 * TODO: don't use OSX in the preprocessor directive
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
556 */
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
557 #ifdef OSX
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
558
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
559 int fs_acl_check(SysACL *acl, User *user, char *path, uint32_t access_mask) {
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
560 return 1;
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
561 }
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
562
73
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
563 void fs_acl_finish() {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
564
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
565 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
566
69
4a10bc0ee80d compiles on os x
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 66
diff changeset
567 #endif
73
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
568
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
569
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
570 #ifdef LINUX
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
571
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
572 #include <sys/fsuid.h>
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
573
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
574 int fs_acl_check(SysACL *acl, User *user, char *path, uint32_t access_mask) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
575 struct passwd *ws_pw = conf_getglobals()->Vuserpw;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
576 if(!ws_pw) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
577 log_ereport(LOG_FAILURE, "fs_acl_check: unknown webserver uid/gid");
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
578 return 1;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
579 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
580
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
581 // get uid/gid
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
582 struct passwd pw;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
583 if(user) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
584 char *pwbuf = malloc(DEF_PWBUF);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
585 if(pwbuf == NULL) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
586 return 0;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
587 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
588 if(!util_getpwnam(user->name, &pw, pwbuf, DEF_PWBUF)) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
589 free(pwbuf);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
590 return 0;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
591 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
592 free(pwbuf);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
593 acl->user_uid = pw.pw_uid;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
594 acl->user_gid = pw.pw_gid;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
595 } else {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
596 acl->user_uid = 0;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
597 acl->user_gid = 0;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
598 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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599
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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600 // set fs uid/gid
79fa26ecd135 added file system ACLs for linux
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parents: 69
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601 if(acl->user_uid != 0) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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602 if(setfsuid(pw.pw_uid)) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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603 log_ereport(
79fa26ecd135 added file system ACLs for linux
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parents: 69
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604 LOG_FAILURE,
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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605 "Cannot set fsuid to uid: %u", pw.pw_uid);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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606 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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607 if(setfsgid(pw.pw_gid)) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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608 log_ereport(
79fa26ecd135 added file system ACLs for linux
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parents: 69
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609 LOG_FAILURE,
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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610 "Cannot set fsgid to gid: %u", pw.pw_gid);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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611 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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612 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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613
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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614
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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615 return 1;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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616 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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617
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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618 void fs_acl_finish() {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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619 struct passwd *pw = conf_getglobals()->Vuserpw;
79fa26ecd135 added file system ACLs for linux
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parents: 69
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620 if(!pw) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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621 log_ereport(
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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622 LOG_FAILURE,
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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623 "global configuration broken (Vuserpw is null)");
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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624 return;
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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625 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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626 if(setfsuid(pw->pw_uid)) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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627 log_ereport(
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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628 LOG_FAILURE,
79fa26ecd135 added file system ACLs for linux
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parents: 69
diff changeset
629 "Cannot set fsuid back to server uid: %u", pw->pw_uid);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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630 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
631 if(setfsgid(pw->pw_gid)) {
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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632 log_ereport(
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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633 LOG_FAILURE,
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
diff changeset
634 "Cannot set fsgid back to server gid: %u", pw->pw_gid);
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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635 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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636 }
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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637
79fa26ecd135 added file system ACLs for linux
Olaf Wintermann <olaf.wintermann@gmail.com>
parents: 69
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638 #endif

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