src/server/config/acl.c

Sat, 18 Feb 2017 13:27:25 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Sat, 18 Feb 2017 13:27:25 +0100
branch
aio
changeset 172
5580517faafc
parent 115
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child 415
d938228c382e
permissions
-rw-r--r--

adds public aio and poll api and asynchronous send_range function

aio and poll api is only implemented on solaris yet
send_file saf uses send_range_aio for single range requests

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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 <string.h>
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32
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33 #include "acl.h"
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34
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35 ACLFile* load_acl_file(char *file) {
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36 FILE *in = fopen(file, "r");
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37 if(in == NULL) {
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38 return NULL;
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39 }
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40
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41 ACLFile *conf = malloc(sizeof(ACLFile));
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42 conf->parser.parse = acl_parse;
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43 conf->namedACLs = NULL;
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44 conf->uriACLs = NULL;
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45 conf->pathACLs = NULL;
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46
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47 int r = cfg_parse_basic_file((ConfigParser*)conf, in);
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48 if(r != 0) {
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49 free_acl_file(conf);
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50 return NULL;
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51 }
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52
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53 fclose(in);
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54
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55 return conf;
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56 }
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57
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58 void free_acl_file(ACLFile *conf) {
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59 ucx_mempool_destroy(conf->parser.mp->pool);
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60 free(conf);
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61 }
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62
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63 int acl_parse(void *p, ConfigLine *begin, ConfigLine *end, sstr_t line) {
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64 ACLFile *aclf = p;
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65 UcxAllocator *mp = aclf->parser.mp;
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66
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67 if(sstrprefix(line, sstr("ACL "))) {
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68 sstr_t param = sstrsubs(line, 4);
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69 UcxList *plist = cfg_param_list(param, mp);
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70 ACLConfig *acl = OBJ_NEW(mp, ACLConfig);
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71 acl->type.ptr = NULL;
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72 acl->authparam = NULL;
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73 acl->entries = NULL;
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74 aclf->cur = acl;
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75
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76 sstr_t type = cfg_param_get(plist, sstr("type"));
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77 sstr_t name = cfg_param_get(plist, sstr("name"));
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78 sstr_t path = cfg_param_get(plist, sstr("path"));
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79 sstr_t uri = cfg_param_get(plist, sstr("uri"));
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80
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81 if(name.ptr) {
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82 acl->id = name;
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83 aclf->namedACLs = ucx_list_append_a(mp, aclf->namedACLs, acl);
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84 } else if(path.ptr) {
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85 acl->id = path;
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86 aclf->pathACLs = ucx_list_append_a(mp, aclf->pathACLs, acl);
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87 } else if(uri.ptr) {
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88 acl->id = uri;
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89 aclf->uriACLs = ucx_list_append_a(mp, aclf->uriACLs, acl);
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90 }
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91
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92 if(type.ptr) {
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93 acl->type = type;
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94 }
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95 } else if(sstrprefix(line, sstr("Authenticate "))) {
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96 sstr_t param = sstrsubs(line, 13);
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97 UcxList *plist = cfg_param_list(param, mp);
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98 aclf->cur->authparam = plist;
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99 } else {
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100 if(parse_ace(aclf, line)) {
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101 // TODO: error
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102 return 1;
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103 }
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104 }
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105
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106 return 0;
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107 }
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108
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109 int parse_ace(ACLFile *f, sstr_t line) {
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110 ACLConfig *cur = f->cur;
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111 UcxAllocator *mp = f->parser.mp;
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112
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113 ssize_t tkn = 0;
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114 sstr_t *tk = sstrsplit(line, sstr(":"), &tkn);
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115 if(!tk || tkn < 3) {
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116 log_ereport(LOG_FAILURE, "parse_ace: to few tokens");
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117 return 1;
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118 }
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119
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120 ACEConfig *ace = OBJ_NEW(mp, ACEConfig);
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121 memset(ace, 0, sizeof(ACEConfig));
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122
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123 /*
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124 * first step: determine who is affected by this ace
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125 */
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126 int n = 0;
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127 sstr_t s = tk[0];
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128
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129 if(!sstrcmp(s, sstr("user"))) {
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130 // next token is the user name
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131 s = tk[1];
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132 n++;
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133 ace->who = sstrdup_a(mp, s);
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134 } else if(!sstrcmp(s, sstr("group"))) {
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135 // next token is the group name
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136 s = tk[1];
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137 n++;
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138 ace->who = sstrdup_a(mp, s);
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139 ace->flags = ACLCFG_IDENTIFIER_GROUP;
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140 } else if(!sstrcmp(s, sstr("owner@"))) {
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141 ace->flags = ACLCFG_OWNER;
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142 } else if(!sstrcmp(s, sstr("group@"))) {
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143 ace->flags = ACLCFG_GROUP;
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144 } else if(!sstrcmp(s, sstr("everyone@"))) {
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145 ace->flags = ACLCFG_EVERYONE;
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146 } else {
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147 // you can specify only the user name in the ace
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148 ace->who = sstrdup_a(mp, s);
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149 }
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150
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151 n++; //next token
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152
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153 /*
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154 * get the access mask
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155 */
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156
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157 if(n >= tkn) {
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158 // to few tokens
115
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159 log_ereport(LOG_FAILURE, "parse_ace: ace incomplete");
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160 return 1;
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161 }
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162 s = tk[n];
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163
101
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164 ssize_t maskn = 0;
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165 sstr_t *accessmask = sstrsplit(s, sstr(","), &maskn);
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166 for(int i=0;i<maskn;i++) {
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167 sstr_t access = accessmask[i];
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168 ace->access_mask = ace->access_mask | accstr2int(access);
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169 }
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170 free(accessmask);
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171 n++; // next token
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172
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173 /*
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174 * get flags (optional) and ace type
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175 */
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176
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177 int complete = 0;
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178 while(n < tkn) {
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179 s = tk[n];
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180 if(!sstrcmp(s, sstr("allow"))) {
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181 ace->type = ACLCFG_TYPE_ALLOWED;
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182 complete = 1;
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183 break;
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184 } else if(!sstrcmp(s, sstr("deny"))) {
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185 ace->type = ACLCFG_TYPE_DENIED;
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186 complete = 1;
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187 break;
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188 } else if(!sstrcmp(s, sstr("audit"))) {
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189 ace->type = ACLCFG_TYPE_AUDIT;
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190 complete = 1;
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191 break;
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192 } else if(!sstrcmp(s, sstr("alarm"))) {
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193 ace->type = ACLCFG_TYPE_ALARM;
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194 complete = 1;
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195 break;
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196 } else {
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197 // set flags
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198 ssize_t fln = 0;
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199 sstr_t *flags = sstrsplit(s, sstr(","), &fln);
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200 for(int i=0;i<fln;i++) {
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201 sstr_t flag = flags[i];
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202 if(!sstrcmp(flag, sstr("successful_access_flag"))) {
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203 ace->flags = ace->flags | ACLCFG_SUCCESSFUL_ACCESS_FLAG;
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204 } else if(!sstrcmp(flag, sstr("failed_access_flag"))) {
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205 ace->flags = ace->flags | ACLCFG_FAILED_ACCESS_ACE_FLAG;
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206 }
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207 // TODO: other flags
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208 }
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209 free(flags);
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210 }
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211 n++;
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212 }
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213
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214 if(!complete) {
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215 log_ereport(LOG_FAILURE, "parse_ace: ace incomplete");
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216 return 1;
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217 }
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218
91
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219 cur->entries = ucx_list_append_a(mp, cur->entries, ace);
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220
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221 return 0;
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222 }
52
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223
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224 uint32_t accstr2int(sstr_t access) {
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225 uint32_t val = 0;
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226 if(!sstrcmp(access, sstr("read"))) {
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227 val = ACLCFG_READ;
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228 } else if(!sstrcmp(access, sstr("write"))) {
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229 val = ACLCFG_WRITE;
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230 } else if(!sstrcmp(access, sstr("read_data"))) {
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231 val = ACLCFG_READ_DATA;
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232 } else if(!sstrcmp(access, sstr("write_data"))) {
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233 val = ACLCFG_WRITE_DATA;
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234 } else if(!sstrcmp(access, sstr("append"))) {
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235 val = ACLCFG_APPEND;
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236 } else if(!sstrcmp(access, sstr("add"))) {
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237 val = ACLCFG_ADD_FILE;
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238 } else if(!sstrcmp(access, sstr("add_file"))) {
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239 val = ACLCFG_ADD_FILE;
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240 } else if(!sstrcmp(access, sstr("add_subdirectory"))) {
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241 val = ACLCFG_ADD_SUBDIRECTORY;
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242 } else if(!sstrcmp(access, sstr("read_xattr"))) {
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243 val = ACLCFG_READ_XATTR;
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244 } else if(!sstrcmp(access, sstr("write_xattr"))) {
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245 val = ACLCFG_WRITE_XATTR;
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246 } else if(!sstrcmp(access, sstr("execute"))) {
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247 val = ACLCFG_EXECUTE;
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248 } else if(!sstrcmp(access, sstr("delete_child"))) {
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249 val = ACLCFG_DELETE_CHILD;
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250 } else if(!sstrcmp(access, sstr("delete"))) {
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251 val = ACLCFG_DELETE;
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252 } else if(!sstrcmp(access, sstr("read_attributes"))) {
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253 val = ACLCFG_READ_ATTRIBUTES;
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254 } else if(!sstrcmp(access, sstr("write_attributes"))) {
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255 val = ACLCFG_WRITE_ATTRIBUTES;
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256 } else if(!sstrcmp(access, sstr("list"))) {
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257 val = ACLCFG_LIST;
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258 } else if(!sstrcmp(access, sstr("read_acl"))) {
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259 val = ACLCFG_READ_ACL;
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260 } else if(!sstrcmp(access, sstr("write_acl"))) {
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261 val = ACLCFG_WRITE_ACL;
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262 } else if(!sstrcmp(access, sstr("write_owner"))) {
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263 val = ACLCFG_WRITE_OWNER;
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264 } else if(!sstrcmp(access, sstr("synchronize"))) {
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265 val = ACLCFG_SYNCHRONIZE;
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266 }
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267 return val;
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diff changeset
268 }

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