1 | |
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2 | /** |
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3 | ** abac_aspect.c |
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4 | **/ |
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5 | |
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6 | #include <assert.h> |
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7 | |
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8 | #include "abac_defines.h" |
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9 | #include "abac_util.h" |
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10 | #include "abac_term.h" |
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11 | #include "abac_verifier.h" |
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12 | #include "abac_list.h" |
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13 | #include "abac_context.h" |
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14 | #include "abac_id.h" |
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15 | |
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16 | static int debug=0; |
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17 | extern int ABAC_IN_PROLOG; |
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18 | |
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19 | /* |
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20 | A.role <- B |
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21 | A.role <- B.role |
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22 | A.role <- B.role.role |
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23 | |
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24 | A.oset <- B |
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25 | A.oset <- Obj |
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26 | A.oset <- B.oset |
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27 | A.oset <- B.role.oset |
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28 | */ |
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29 | |
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30 | /* can store either a role or oset */ |
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31 | struct _abac_aspect_t { |
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32 | int aspect_type; |
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33 | int is_object; |
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34 | |
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35 | char *principal_name; |
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36 | char *principal_name_p; // pPrincipal_name |
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37 | abac_term_t *principal_object; |
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38 | |
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39 | char *linked_role_name; |
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40 | abac_param_list_t *linked_role_params; |
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41 | |
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42 | char *aspect_name; |
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43 | abac_param_list_t *aspect_params; |
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44 | |
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45 | char *type_string; // "oset" or "role" |
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46 | |
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47 | abac_list_t *prereqs; |
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48 | int refcount; |
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49 | }; |
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50 | |
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51 | /* local */ |
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52 | char *abac_aspect_string_with_condition(abac_aspect_t *); |
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53 | char *abac_aspect_typed_string_with_condition(abac_aspect_t *); |
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54 | static abac_aspect_t *_abac_aspect_init(); |
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55 | |
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56 | /**************************************************************/ |
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57 | int abac_aspect_is_oset(abac_aspect_t *ptr) |
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58 | { |
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59 | assert(ptr); |
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60 | if(ptr->aspect_type == e_ASPECTTYPE_OSET) |
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61 | return 1; |
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62 | return 0; |
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63 | } |
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64 | |
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65 | int abac_aspect_is_role(abac_aspect_t *ptr) |
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66 | { |
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67 | assert(ptr); |
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68 | if(ptr->aspect_type==e_ASPECTTYPE_ROLE) |
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69 | return 1; |
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70 | return 0; |
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71 | } |
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72 | |
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73 | int abac_aspect_is_intersecting(abac_aspect_t *ptr) |
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74 | { |
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75 | assert(ptr); |
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76 | if(ptr->aspect_type == e_ASPECTTYPE_INTERSECTING) |
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77 | return 1; |
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78 | else return 0; |
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79 | } |
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80 | |
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81 | /* A.role->B or A.oset->B */ |
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82 | int abac_aspect_is_principal(abac_aspect_t *ptr) { |
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83 | assert(ptr != NULL); |
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84 | return ptr->is_object == 0 && |
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85 | ptr->aspect_name == NULL && |
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86 | ptr->linked_role_name == NULL && |
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87 | ptr->prereqs == NULL; |
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88 | } |
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89 | |
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90 | /* A.oset->O */ |
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91 | int abac_aspect_is_object(abac_aspect_t *ptr) |
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92 | { |
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93 | assert(ptr); |
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94 | if(ptr->aspect_type == e_ASPECTTYPE_OSET) |
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95 | return ptr->is_object; |
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96 | return 0; |
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97 | } |
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98 | |
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99 | /* A.role->B.role.role or A.oset->B.role.oset */ |
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100 | int abac_aspect_is_linking(abac_aspect_t *ptr) |
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101 | { |
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102 | assert(ptr); |
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103 | return ptr->linked_role_name != NULL; |
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104 | } |
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105 | |
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106 | /** |
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107 | * True if an aspect is an intersection. |
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108 | */ |
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109 | int abac_aspect_is_intersection(abac_aspect_t *ptr) |
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110 | { |
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111 | assert(ptr); |
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112 | return ptr->prereqs != NULL; |
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113 | } |
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114 | |
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115 | /** |
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116 | * return the type that is common to all the intersecting aspects |
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117 | */ |
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118 | int abac_aspect_intersecting_aspect_type(abac_aspect_t *ptr) |
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119 | { |
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120 | assert(ptr); |
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121 | assert(ptr->prereqs); |
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122 | abac_aspect_t *cur; |
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123 | int first=1; |
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124 | int type; |
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125 | abac_list_foreach(ptr->prereqs, cur, |
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126 | if(first) { |
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127 | type=abac_aspect_aspect_type(cur); |
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128 | first=0; |
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129 | } else { |
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130 | if(abac_aspect_aspect_type(cur) != type) |
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131 | errx(1,"Intersecting tails are not of the same type"); |
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132 | } |
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133 | ); |
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134 | return type; |
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135 | } |
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136 | |
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137 | /** |
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138 | * Returns the prereqs of an intersection. |
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139 | */ |
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140 | abac_list_t *abac_aspect_prereqs(abac_aspect_t *ptr) |
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141 | { |
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142 | assert(ptr); |
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143 | return ptr->prereqs; |
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144 | } |
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145 | |
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146 | char* abac_aspect_type_string(abac_aspect_t *ptr) |
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147 | { |
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148 | assert(ptr); |
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149 | return ptr->type_string; |
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150 | } |
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151 | |
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152 | int abac_aspect_aspect_type(abac_aspect_t *ptr) |
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153 | { |
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154 | assert(ptr); |
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155 | return ptr->aspect_type; |
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156 | } |
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157 | |
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158 | /** |
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159 | * Returns the linked part of a linking aspect. |
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160 | * For instance, if the aspect is A.r1.r2, this returns r1. |
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161 | */ |
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162 | char *abac_aspect_linked_role_name(abac_aspect_t *ptr) |
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163 | { |
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164 | assert(ptr); |
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165 | return ptr->linked_role_name; |
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166 | } |
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167 | |
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168 | /* A.r1 without params or constraints, callee needs to free it*/ |
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169 | char *abac_aspect_linked_role_bare(abac_aspect_t *ptr) |
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170 | { |
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171 | assert(ptr); |
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172 | assert(ptr->principal_name); |
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173 | assert(ptr->linked_role_name); |
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174 | char *tmp=NULL; |
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175 | asprintf(&tmp,"%s.%s",ptr->principal_name,ptr->linked_role_name); |
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176 | return tmp; |
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177 | } |
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178 | |
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179 | abac_param_list_t *abac_aspect_linked_role_params(abac_aspect_t *ptr) |
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180 | { |
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181 | assert(ptr); |
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182 | return ptr->linked_role_params; |
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183 | } |
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184 | |
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185 | /** |
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186 | * Returns the name of an aspect. If the aspect is A.r1 then return r1. |
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187 | * If the aspect is A.r1.r2 then return r2. |
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188 | */ |
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189 | char *abac_aspect_aspect_name(abac_aspect_t *ptr) { |
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190 | assert(ptr); |
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191 | return ptr->aspect_name; |
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192 | } |
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193 | |
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194 | abac_param_list_t *abac_aspect_aspect_params(abac_aspect_t *ptr) |
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195 | { |
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196 | assert(ptr); |
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197 | return ptr->aspect_params; |
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198 | } |
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199 | |
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200 | /** |
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201 | * Returns the principal part of an aspect. The stuff before the first dot. |
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202 | */ |
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203 | char *abac_aspect_principal_name(abac_aspect_t *ptr) |
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204 | { |
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205 | assert(ptr); |
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206 | if(USE("ABAC_CN")) |
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207 | return abac_cn_with_sha(ptr->principal_name); |
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208 | if(ABAC_IN_PROLOG) { |
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209 | return ptr->principal_name_p; |
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210 | } else return ptr->principal_name; |
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211 | } |
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212 | |
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213 | char *abac_aspect_principal_principalname(abac_aspect_t *ptr) |
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214 | { |
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215 | assert(ptr); |
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216 | if(ABAC_IN_PROLOG) |
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217 | return ptr->principal_name_p; |
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218 | return ptr->principal_name; |
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219 | } |
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220 | |
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221 | char *abac_aspect_principal_type(abac_aspect_t *ptr) |
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222 | { |
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223 | assert(ptr); |
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224 | return abac_idtype_with_sha(ptr->principal_name); |
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225 | } |
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226 | |
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227 | char *abac_aspect_principal_cn(abac_aspect_t *ptr) |
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228 | { |
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229 | assert(ptr); |
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230 | return abac_cn_with_sha(ptr->principal_name); |
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231 | } |
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232 | |
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233 | abac_term_t *abac_aspect_object_term(abac_aspect_t *ptr) |
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234 | { |
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235 | return ptr->principal_object; |
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236 | } |
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237 | |
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238 | char *abac_aspect_object_name(abac_aspect_t *ptr) |
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239 | { |
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240 | assert(ptr); |
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241 | assert(ptr->is_object); |
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242 | abac_term_t *obj=ptr->principal_object; |
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243 | return abac_term_name(obj); |
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244 | } |
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245 | |
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246 | int _abac_aspect_object_is_time_type(abac_aspect_t *ptr) |
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247 | { |
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248 | abac_term_t *obj=ptr->principal_object; |
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249 | return abac_term_is_time_type(obj); |
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250 | } |
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251 | |
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252 | char *abac_aspect_object_type(abac_aspect_t *ptr) |
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253 | { |
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254 | assert(ptr); |
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255 | assert(ptr->is_object); |
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256 | abac_term_t *obj=ptr->principal_object; |
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257 | char *tmp=abac_term_type_name(obj); |
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258 | if(debug) fprintf(stderr,"abac_aspect_object_type: checking on object type, %s\n",tmp); |
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259 | return tmp; |
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260 | } |
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261 | |
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262 | abac_condition_t *abac_aspect_object_constraint(abac_aspect_t *ptr) |
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263 | { |
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264 | assert(ptr != NULL); |
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265 | assert(ptr->is_object); |
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266 | abac_term_t *obj=ptr->principal_object; |
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267 | return abac_term_constraint(obj); |
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268 | } |
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269 | |
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270 | /* currently the issuer's id is extracted from session's |
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271 | master copy instead of checking through context's list first |
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272 | This might allow some loopholes of incomplete validation somewhere.. |
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273 | need to revisit again XXX */ |
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274 | char* abac_aspect_get_issuer_keytype(abac_aspect_t *ptr) |
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275 | { |
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276 | abac_id_t *issuer_id=NULL; |
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277 | char *principalname=abac_aspect_principal_principalname(ptr); |
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278 | if(principalname) { |
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279 | abac_id_credential_t *id_cred=abac_id_credential_lookup(principalname); |
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280 | if(id_cred) { |
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281 | issuer_id=abac_id_credential_id(id_cred); |
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282 | return abac_id_keyid(issuer_id); |
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283 | } |
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284 | } |
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285 | return NULL; |
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286 | } |
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287 | |
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288 | int abac_aspect_get_issuer_idtype(abac_aspect_t *ptr) |
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289 | { |
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290 | abac_id_t *issuer_id=NULL; |
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291 | char *principalname=abac_aspect_principal_principalname(ptr); |
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292 | if(principalname) { |
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293 | abac_id_credential_t *id_cred=abac_id_credential_lookup(principalname); |
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294 | if(id_cred) { |
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295 | issuer_id=abac_id_credential_id(id_cred); |
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296 | return abac_id_idtype(issuer_id); |
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297 | } |
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298 | } |
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299 | return 0; |
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300 | } |
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301 | |
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302 | abac_id_t *abac_aspect_get_issuer_id(abac_aspect_t *ptr) |
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303 | { |
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304 | abac_id_t *issuer_id=NULL; |
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305 | char *principalname=abac_aspect_principal_principalname(ptr); |
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306 | if(principalname) { |
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307 | abac_id_credential_t *id_cred=abac_id_credential_lookup(principalname); |
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308 | if(id_cred) { |
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309 | issuer_id=abac_id_credential_id(id_cred); |
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310 | } |
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311 | } |
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312 | return issuer_id; |
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313 | } |
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314 | /** |
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315 | * deep copy of aspect |
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316 | */ |
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317 | abac_aspect_t *abac_aspect_copy(abac_aspect_t *ptr) |
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318 | { |
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319 | if(ptr == NULL) return NULL; |
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320 | |
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321 | abac_aspect_t *nptr=_abac_aspect_init(); |
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322 | nptr->aspect_type=ptr->aspect_type; |
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323 | nptr->is_object=ptr->is_object; |
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324 | |
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325 | if(ptr->principal_name) |
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326 | nptr->principal_name=abac_xstrdup(ptr->principal_name); |
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327 | if(ptr->principal_name_p) |
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328 | nptr->principal_name_p=abac_xstrdup(ptr->principal_name_p); |
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329 | if(ptr->principal_object) |
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330 | nptr->principal_object=abac_term_copy(ptr->principal_object); |
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331 | |
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332 | if(ptr->linked_role_name) |
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333 | nptr->linked_role_name=abac_xstrdup(ptr->linked_role_name); |
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334 | nptr->linked_role_params=abac_param_list_copy(ptr->linked_role_params); |
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335 | |
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336 | if(ptr->aspect_name) |
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337 | nptr->aspect_name=abac_xstrdup(ptr->aspect_name); |
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338 | nptr->aspect_params=abac_param_list_copy(ptr->aspect_params); |
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339 | |
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340 | if(ptr->type_string) |
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341 | nptr->type_string=abac_xstrdup(ptr->type_string); |
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342 | |
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343 | if (ptr->prereqs != NULL) { |
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344 | nptr->prereqs=abac_list_new(); |
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345 | abac_aspect_t *cur=NULL; |
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346 | abac_aspect_t *ncur=NULL; |
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347 | abac_list_foreach(ptr->prereqs, cur, |
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348 | ncur=abac_aspect_copy(cur); |
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349 | abac_list_add(nptr->prereqs,ncur); |
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350 | ); |
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351 | } |
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352 | return nptr; |
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353 | } |
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354 | /** |
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355 | * Increase a aspect's reference count. |
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356 | */ |
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357 | abac_aspect_t *abac_aspect_dup(abac_aspect_t *ptr) |
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358 | { |
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359 | assert(ptr != NULL); |
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360 | ++ptr->refcount; |
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361 | return ptr; |
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362 | } |
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363 | |
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364 | /** |
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365 | * Decrease an aspect's reference count, freeing it when it reaches 0. |
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366 | */ |
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367 | void abac_aspect_free(abac_aspect_t *ptr) { |
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368 | |
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369 | if(debug) { |
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370 | if(ptr->aspect_name) |
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371 | fprintf(stderr,"DEBUG:trying to freeing an aspect loc(%ld)(%s:%d)\n",(long)ptr, ptr->aspect_name, ptr->refcount); |
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372 | else |
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373 | fprintf(stderr,"DEBUG:trying to freeing an aspect loc(%ld)(M:%d)\n",(long)ptr,ptr->refcount); |
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374 | |
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375 | } |
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376 | |
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377 | assert(ptr); |
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378 | |
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379 | --ptr->refcount; |
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380 | if (ptr->refcount > 0) |
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381 | return; |
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382 | |
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383 | if(debug) { |
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384 | if(ptr->aspect_name) |
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385 | fprintf(stderr,"DEBUG:freeing this aspect loc(%ld)(%s:%d)\n",(long)ptr, ptr->aspect_name, ptr->refcount); |
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386 | else fprintf(stderr,"DEBUG:freeing this aspect loc(%ld)(M:%d)\n",(long)ptr, ptr->refcount); |
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387 | } |
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388 | |
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389 | if(ptr->principal_name) free(ptr->principal_name); |
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390 | if(ptr->principal_name_p) free(ptr->principal_name_p); |
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391 | if(ptr->linked_role_name) free(ptr->linked_role_name); |
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392 | if(ptr->aspect_name) free(ptr->aspect_name); |
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393 | |
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394 | if(ptr->type_string) free(ptr->type_string); |
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395 | |
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396 | if (ptr->aspect_params != NULL) { |
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397 | abac_param_list_free(ptr->aspect_params); |
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398 | } |
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399 | |
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400 | if (ptr->linked_role_params != NULL) { |
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401 | abac_param_list_free(ptr->linked_role_params); |
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402 | } |
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403 | |
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404 | if (ptr->prereqs != NULL) { |
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405 | abac_aspect_t *cur=NULL; |
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406 | abac_list_foreach(ptr->prereqs, cur, |
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407 | abac_aspect_free(cur); |
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408 | ); |
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409 | abac_list_free(ptr->prereqs); |
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410 | } |
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411 | |
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412 | free(ptr); |
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413 | } |
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414 | |
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415 | /**********************************************************************/ |
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416 | |
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417 | void abac_aspect_add_param(abac_aspect_t *ptr, abac_term_t *param) |
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418 | { |
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419 | if(ptr->aspect_params == NULL) { |
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420 | ptr->aspect_params=abac_param_list_new(param); |
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421 | } else { |
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422 | abac_param_list_add_term(ptr->aspect_params, param); |
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423 | } |
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424 | } |
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425 | |
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426 | void abac_aspect_add_intersecting_aspect(abac_aspect_t *ptr, abac_aspect_t *aspect) |
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427 | { |
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428 | abac_list_add(ptr->prereqs, abac_aspect_dup(aspect)); |
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429 | } |
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430 | |
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431 | void abac_aspect_add_linked_param(abac_aspect_t *ptr, abac_term_t *param) |
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432 | { |
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433 | if(ptr->linked_role_params == NULL) { |
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434 | ptr->linked_role_params=abac_param_list_new(param); |
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435 | } else { |
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436 | abac_param_list_add_term(ptr->linked_role_params, param); |
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437 | } |
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438 | } |
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439 | |
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440 | |
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441 | /**********************************************************************/ |
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442 | |
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443 | /** |
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444 | * Create a new principal and initialize it. |
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445 | * always with the proper SHA string |
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446 | */ |
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447 | static abac_aspect_t *_abac_aspect_init() |
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448 | { |
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449 | abac_aspect_t *ptr = (abac_aspect_t *) abac_xmalloc(sizeof(abac_aspect_t)); |
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450 | |
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451 | ptr->aspect_type=e_ASPECTTYPE_NULL; |
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452 | ptr->is_object=0; |
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453 | |
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454 | ptr->principal_name = NULL; |
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455 | ptr->principal_name_p = NULL; |
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456 | ptr->principal_object = NULL; |
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457 | |
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458 | ptr->aspect_name = NULL; |
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459 | ptr->aspect_params = NULL; |
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460 | |
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461 | ptr->linked_role_name = NULL; |
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462 | ptr->linked_role_params = NULL; |
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463 | |
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464 | ptr->type_string=NULL; |
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465 | |
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466 | ptr->prereqs = NULL; |
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467 | ptr->refcount = 1; |
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468 | } |
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469 | |
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470 | abac_aspect_t *abac_aspect_principal_new(int type, char *principal_name) |
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471 | { |
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472 | assert(principal_name != NULL); |
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473 | |
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474 | if (strlen(principal_name) == 0) |
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475 | return NULL; |
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476 | |
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477 | /* XXX currently, it might be good if the principal_name is used o |
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478 | lookup the hashed id table and somehow link to the ID that it belongs |
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479 | too, currently, we check it later.. */ |
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480 | abac_aspect_t *ptr = _abac_aspect_init(); |
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481 | ptr->aspect_type=type; |
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482 | ptr->principal_name = abac_xstrdup(principal_name); |
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483 | ptr->principal_name_p = prologIt(principal_name); |
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484 | if(type==e_ASPECTTYPE_ROLE) |
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485 | ptr->type_string=abac_xstrdup("role"); |
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486 | if(type==e_ASPECTTYPE_OSET) |
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487 | ptr->type_string=abac_xstrdup("oset"); |
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488 | return ptr; |
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489 | } |
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490 | |
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491 | abac_aspect_t *abac_aspect_role_principal_new(char *principal_name) |
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492 | { |
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493 | return abac_aspect_principal_new(e_ASPECTTYPE_ROLE,principal_name); |
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494 | } |
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495 | |
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496 | abac_aspect_t *abac_aspect_role_principal_create(char *principal_name) |
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497 | { |
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498 | return abac_aspect_principal_new(e_ASPECTTYPE_ROLE,principal_name); |
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499 | } |
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500 | |
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501 | abac_aspect_t *abac_aspect_oset_principal_new(char *principal_name) |
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502 | { |
---|
503 | return abac_aspect_principal_new(e_ASPECTTYPE_OSET,principal_name); |
---|
504 | } |
---|
505 | |
---|
506 | abac_aspect_t *abac_aspect_oset_principal_create(char *principal_name) |
---|
507 | { |
---|
508 | return abac_aspect_principal_new(e_ASPECTTYPE_OSET,principal_name); |
---|
509 | } |
---|
510 | |
---|
511 | abac_aspect_t *abac_aspect_object_new(int type, abac_term_t *object) |
---|
512 | { |
---|
513 | assert(object != NULL); |
---|
514 | abac_aspect_t *ptr = _abac_aspect_init(); |
---|
515 | ptr->aspect_type=type; |
---|
516 | ptr->is_object =1; |
---|
517 | ptr->principal_object = object; |
---|
518 | /* can not be role type */ |
---|
519 | if(type==e_ASPECTTYPE_OSET) |
---|
520 | ptr->type_string=abac_xstrdup("oset"); |
---|
521 | |
---|
522 | return ptr; |
---|
523 | } |
---|
524 | |
---|
525 | abac_aspect_t *abac_aspect_oset_object_new(abac_term_t *object) |
---|
526 | { |
---|
527 | return abac_aspect_object_new(e_ASPECTTYPE_OSET, object); |
---|
528 | } |
---|
529 | |
---|
530 | abac_aspect_t *abac_aspect_oset_object_create(abac_term_t *object) |
---|
531 | { |
---|
532 | return abac_aspect_object_new(e_ASPECTTYPE_OSET,object); |
---|
533 | } |
---|
534 | abac_aspect_t *abac_aspect_new(int type, char *principal_name, char *aspect_name) |
---|
535 | { |
---|
536 | assert(principal_name != NULL); |
---|
537 | assert(aspect_name != NULL); |
---|
538 | |
---|
539 | if (strlen(principal_name) == 0 || strlen(aspect_name) == 0) |
---|
540 | return NULL; |
---|
541 | |
---|
542 | abac_aspect_t *ptr = _abac_aspect_init(); |
---|
543 | |
---|
544 | ptr->principal_name = abac_xstrdup(principal_name); |
---|
545 | ptr->principal_name_p = prologIt(principal_name); |
---|
546 | ptr->aspect_type=type; |
---|
547 | |
---|
548 | ptr->aspect_name = abac_xstrdup(aspect_name); |
---|
549 | |
---|
550 | if(type==e_ASPECTTYPE_OSET) |
---|
551 | ptr->type_string= abac_xstrdup("oset"); |
---|
552 | else |
---|
553 | ptr->type_string= abac_xstrdup("role"); |
---|
554 | |
---|
555 | if(debug) |
---|
556 | fprintf(stderr,"abac_aspect_new:adding a new aspect type(%d) (%s) to principal (%s)\n", |
---|
557 | type, ptr->aspect_name, ptr->principal_name); |
---|
558 | return ptr; |
---|
559 | } |
---|
560 | |
---|
561 | abac_aspect_t *abac_aspect_oset_new(char *principal_name, char *oset_name) |
---|
562 | { |
---|
563 | return abac_aspect_new(e_ASPECTTYPE_OSET,principal_name, oset_name); |
---|
564 | } |
---|
565 | |
---|
566 | abac_aspect_t *abac_aspect_oset_create(char *principal_name, char *oset_name) |
---|
567 | { |
---|
568 | return abac_aspect_new(e_ASPECTTYPE_OSET,principal_name,oset_name); |
---|
569 | } |
---|
570 | |
---|
571 | abac_aspect_t *abac_aspect_role_new(char *principal_name, char *oset_name) |
---|
572 | { |
---|
573 | return abac_aspect_new(e_ASPECTTYPE_ROLE,principal_name, oset_name); |
---|
574 | } |
---|
575 | |
---|
576 | abac_aspect_t *abac_aspect_role_create(char *principal_name, char *role_name) |
---|
577 | { |
---|
578 | return abac_aspect_new(e_ASPECTTYPE_ROLE,principal_name,role_name); |
---|
579 | } |
---|
580 | |
---|
581 | /** |
---|
582 | * Created a new linking role/oset and initialize it. |
---|
583 | */ |
---|
584 | abac_aspect_t *abac_aspect_linking_new(int type, char *principal_name, |
---|
585 | char *linked_role_name, char *aspect_name) |
---|
586 | { |
---|
587 | assert(principal_name != NULL); |
---|
588 | assert(linked_role_name != NULL); |
---|
589 | assert(aspect_name != NULL); |
---|
590 | |
---|
591 | if (strlen(principal_name) == 0 || |
---|
592 | strlen(linked_role_name) == 0 || strlen(aspect_name) == 0) |
---|
593 | return NULL; |
---|
594 | |
---|
595 | abac_aspect_t *ptr = _abac_aspect_init(); |
---|
596 | |
---|
597 | ptr->is_object=0; |
---|
598 | ptr->aspect_type=type; |
---|
599 | ptr->principal_name = abac_xstrdup(principal_name); |
---|
600 | ptr->principal_name_p = prologIt(principal_name); |
---|
601 | |
---|
602 | ptr->linked_role_name = abac_xstrdup(linked_role_name); |
---|
603 | ptr->aspect_name = abac_xstrdup(aspect_name); |
---|
604 | |
---|
605 | if(debug) |
---|
606 | fprintf(stderr,"DEBUG:adding a new linked (%s) to oset/role(%s) for principal(%s)\n", |
---|
607 | ptr->linked_role_name, ptr->aspect_name, ptr->principal_name); |
---|
608 | |
---|
609 | if(type==e_ASPECTTYPE_OSET) |
---|
610 | ptr->type_string=abac_xstrdup("oset"); |
---|
611 | else ptr->type_string=abac_xstrdup("role"); |
---|
612 | |
---|
613 | return ptr; |
---|
614 | } |
---|
615 | |
---|
616 | abac_aspect_t *abac_aspect_role_linking_new(char *principal_name, char *linked_role_name, |
---|
617 | char *role_name) |
---|
618 | { |
---|
619 | return abac_aspect_linking_new(e_ASPECTTYPE_ROLE, |
---|
620 | principal_name, linked_role_name, role_name); |
---|
621 | } |
---|
622 | |
---|
623 | abac_aspect_t *abac_aspect_oset_linking_new(char *principal_name, char *linked_role_name, |
---|
624 | char *oset_name) |
---|
625 | { |
---|
626 | return abac_aspect_linking_new(e_ASPECTTYPE_OSET, |
---|
627 | principal_name, linked_role_name, oset_name); |
---|
628 | } |
---|
629 | |
---|
630 | /** |
---|
631 | * Create an intersection oset/role. |
---|
632 | */ |
---|
633 | abac_aspect_t *abac_aspect_intersection_new(abac_aspect_t *aspect) |
---|
634 | { |
---|
635 | abac_aspect_t *ptr = _abac_aspect_init(); |
---|
636 | ptr->aspect_type=e_ASPECTTYPE_INTERSECTING; |
---|
637 | abac_list_t *prereqs = abac_list_new(); |
---|
638 | abac_list_add(prereqs, abac_aspect_dup(aspect)); |
---|
639 | ptr->prereqs = prereqs; |
---|
640 | return ptr; |
---|
641 | } |
---|
642 | |
---|
643 | /*******************************************************************/ |
---|
644 | char *abac_aspect_intersecting_string_with_condition(int typed,abac_aspect_t *ptr) |
---|
645 | { |
---|
646 | assert(ptr != NULL); |
---|
647 | char *tmp=NULL; |
---|
648 | if (ptr->prereqs != NULL) { |
---|
649 | abac_aspect_t *cur; |
---|
650 | abac_list_foreach(ptr->prereqs, cur, |
---|
651 | char *ntmp=NULL; |
---|
652 | if(typed) |
---|
653 | ntmp=abac_aspect_typed_string_with_condition(cur); |
---|
654 | else |
---|
655 | ntmp=abac_aspect_string_with_condition(cur); |
---|
656 | if(tmp==NULL) { |
---|
657 | asprintf(&tmp,"%s",ntmp); |
---|
658 | } else { |
---|
659 | asprintf(&tmp,"%s & %s",tmp, ntmp); |
---|
660 | } |
---|
661 | ); |
---|
662 | } |
---|
663 | return tmp; |
---|
664 | } |
---|
665 | |
---|
666 | /** |
---|
667 | * Returns the string representation of the role/oset. |
---|
668 | * principal.osetname(params..) |
---|
669 | * principal.rolename(params..) |
---|
670 | */ |
---|
671 | char *abac_aspect_string_with_condition(abac_aspect_t *ptr) |
---|
672 | { |
---|
673 | assert(ptr != NULL); |
---|
674 | |
---|
675 | if(abac_aspect_is_intersection(ptr)) { |
---|
676 | return abac_aspect_intersecting_string_with_condition(0,ptr); |
---|
677 | } |
---|
678 | |
---|
679 | char *tmp=NULL; |
---|
680 | char *principal_name; |
---|
681 | if(abac_aspect_is_object(ptr)) { |
---|
682 | principal_name = abac_aspect_object_name(ptr); |
---|
683 | if(_abac_aspect_object_is_time_type(ptr)) |
---|
684 | principal_name=abac_time_to_term(principal_name); |
---|
685 | } else principal_name = abac_aspect_principal_name(ptr); |
---|
686 | char *aspect_name= ptr->aspect_name; |
---|
687 | char *linked_role_name = ptr->linked_role_name; |
---|
688 | char *params_string=NULL; |
---|
689 | char *linked_params_string=NULL; |
---|
690 | |
---|
691 | int len = 0; |
---|
692 | if(principal_name) |
---|
693 | len=len+strlen(principal_name)+1; |
---|
694 | if(aspect_name) |
---|
695 | len = len+strlen(aspect_name)+1; |
---|
696 | if(linked_role_name) |
---|
697 | len = len+strlen(linked_role_name)+1; |
---|
698 | |
---|
699 | if(ptr->aspect_params) { |
---|
700 | params_string=abac_param_list_string_with_condition(ptr->aspect_params); |
---|
701 | len = len+strlen(params_string)+3; |
---|
702 | } |
---|
703 | if(ptr->linked_role_params) { |
---|
704 | linked_params_string=abac_param_list_string_with_condition(ptr->linked_role_params); |
---|
705 | len = len+strlen(linked_params_string)+3; |
---|
706 | } |
---|
707 | |
---|
708 | /* principal */ |
---|
709 | /* principal.oset/role */ |
---|
710 | /* principal.oset/role(params_string) */ |
---|
711 | /* principal.linked_role(linked_params_string).oset/role(params_string) */ |
---|
712 | tmp = abac_xmalloc(len); |
---|
713 | |
---|
714 | if(principal_name) |
---|
715 | sprintf(tmp,"%s",principal_name); |
---|
716 | |
---|
717 | if(linked_role_name) { |
---|
718 | strcat(tmp,"."); |
---|
719 | strcat(tmp,linked_role_name); |
---|
720 | } |
---|
721 | if(linked_params_string) { |
---|
722 | strcat(tmp,"("); |
---|
723 | strcat(tmp,linked_params_string); |
---|
724 | strcat(tmp,")"); |
---|
725 | } |
---|
726 | if(aspect_name) { |
---|
727 | strcat(tmp,"."); |
---|
728 | strcat(tmp,aspect_name); |
---|
729 | } |
---|
730 | if(params_string) { |
---|
731 | strcat(tmp,"("); |
---|
732 | strcat(tmp,params_string); |
---|
733 | strcat(tmp,")"); |
---|
734 | } |
---|
735 | |
---|
736 | if(linked_params_string) free(linked_params_string); |
---|
737 | if(params_string) free(params_string); |
---|
738 | return tmp; |
---|
739 | } |
---|
740 | |
---|
741 | char *abac_aspect_string(abac_aspect_t *ptr) { |
---|
742 | return abac_aspect_string_with_condition(ptr); |
---|
743 | } |
---|
744 | char *abac_aspect_typed_string(abac_aspect_t *ptr) { |
---|
745 | return abac_aspect_typed_string_with_condition(ptr); |
---|
746 | } |
---|
747 | |
---|
748 | void abac_print_aspect_string_with_condition(abac_aspect_t *ptr,FILE *fp) |
---|
749 | { |
---|
750 | char *string=abac_aspect_string_with_condition(ptr); |
---|
751 | if(fp==NULL) |
---|
752 | printf("%s ",string); |
---|
753 | else fprintf(fp,"%s ",string); |
---|
754 | } |
---|
755 | |
---|
756 | void abac_print_aspect_typed_string_with_condition(abac_aspect_t *ptr,FILE *fp) |
---|
757 | { |
---|
758 | char *string=abac_aspect_typed_string_with_condition(ptr); |
---|
759 | if(fp==NULL) |
---|
760 | printf("%s ",string); |
---|
761 | else fprintf(fp,"%s ",string); |
---|
762 | } |
---|
763 | |
---|
764 | int abac_aspect_aspect_param_cnt(abac_aspect_t *ptr) { |
---|
765 | if(ptr->aspect_params) { |
---|
766 | return abac_param_list_cnt(ptr->aspect_params); |
---|
767 | } |
---|
768 | return 0; |
---|
769 | } |
---|
770 | |
---|
771 | char *abac_aspect_aspect_param_string(abac_aspect_t *ptr) { |
---|
772 | assert(ptr != NULL); |
---|
773 | if(ptr->aspect_params) { |
---|
774 | return abac_param_list_string_with_condition(ptr->aspect_params); |
---|
775 | } |
---|
776 | return NULL; |
---|
777 | } |
---|
778 | |
---|
779 | char *abac_aspect_aspect_param_typed_string(abac_aspect_t *ptr) { |
---|
780 | assert(ptr != NULL); |
---|
781 | if(ptr->aspect_params) { |
---|
782 | return abac_param_list_typed_string_with_condition(ptr->aspect_params); |
---|
783 | } |
---|
784 | return NULL; |
---|
785 | } |
---|
786 | |
---|
787 | /** |
---|
788 | * Returns the typed string representation of the role/oset. |
---|
789 | */ |
---|
790 | char *abac_aspect_typed_string_with_condition(abac_aspect_t *ptr) |
---|
791 | { |
---|
792 | assert(ptr != NULL); |
---|
793 | |
---|
794 | if(abac_aspect_is_intersection(ptr)) { |
---|
795 | return abac_aspect_intersecting_string_with_condition(1,ptr); |
---|
796 | } |
---|
797 | |
---|
798 | char *tmp=NULL, *final=NULL; |
---|
799 | char *principal_name; |
---|
800 | char *principal_name_type=NULL; |
---|
801 | if(abac_aspect_is_object(ptr)) { |
---|
802 | principal_name = abac_aspect_object_name(ptr); |
---|
803 | /*special case is when it is time type */ |
---|
804 | if(_abac_aspect_object_is_time_type(ptr)) |
---|
805 | principal_name=abac_time_to_term(principal_name); |
---|
806 | principal_name_type = abac_aspect_object_type(ptr); |
---|
807 | } else { |
---|
808 | principal_name = abac_aspect_principal_name(ptr); |
---|
809 | principal_name_type=abac_aspect_principal_type(ptr); |
---|
810 | if(debug) |
---|
811 | fprintf(stderr,"aspect's typed_string (%s)(%s)\n", |
---|
812 | principal_name_type, principal_name); |
---|
813 | } |
---|
814 | |
---|
815 | /* the principal id is probably not in the idcreds list */ |
---|
816 | if(principal_name_type == NULL) { |
---|
817 | if(debug)fprintf(stderr,"THIS IS BAD, %s \n", principal_name); |
---|
818 | errx(1,"Can not find idtype for principal_name, don't see it in context?"); |
---|
819 | } |
---|
820 | |
---|
821 | if(debug) |
---|
822 | fprintf(stderr,"aspect's typed_string (%s)(%s)\n", |
---|
823 | principal_name_type, principal_name); |
---|
824 | char *aspect_name=abac_aspect_aspect_name(ptr); |
---|
825 | char *aspect_name_type=abac_aspect_type_string(ptr); |
---|
826 | char *linked_role_name=abac_aspect_linked_role_name(ptr); |
---|
827 | char *params_string=NULL; |
---|
828 | char *linked_params_string=NULL; |
---|
829 | |
---|
830 | if(ptr->aspect_params) { |
---|
831 | params_string=abac_param_list_typed_string_with_condition(ptr->aspect_params); |
---|
832 | } |
---|
833 | if(ptr->linked_role_params) { |
---|
834 | linked_params_string=abac_param_list_typed_string_with_condition(ptr->linked_role_params); |
---|
835 | } |
---|
836 | |
---|
837 | asprintf(&final,"[%s:%s]",principal_name_type,principal_name); |
---|
838 | if(linked_role_name) { |
---|
839 | tmp=final; |
---|
840 | final=NULL; |
---|
841 | asprintf(&final,"%s.role:%s",tmp,linked_role_name); |
---|
842 | free(tmp); |
---|
843 | } |
---|
844 | if(linked_params_string) { |
---|
845 | tmp=final; |
---|
846 | final=NULL; |
---|
847 | asprintf(&final,"%s(%s)",tmp,linked_params_string); |
---|
848 | free(tmp); |
---|
849 | } |
---|
850 | if(aspect_name) { |
---|
851 | tmp=final; |
---|
852 | final=NULL; |
---|
853 | asprintf(&final,"%s.%s:%s",tmp,aspect_name_type,aspect_name); |
---|
854 | free(tmp); |
---|
855 | } |
---|
856 | if(params_string) { |
---|
857 | tmp=final; |
---|
858 | final=NULL; |
---|
859 | asprintf(&final,"%s(%s)",tmp,params_string); |
---|
860 | free(tmp); |
---|
861 | } |
---|
862 | |
---|
863 | if(linked_params_string) free(linked_params_string); |
---|
864 | if(params_string) free(params_string); |
---|
865 | return final; |
---|
866 | } |
---|
867 | |
---|
868 | /** |
---|
869 | * Build an attribute key from head and tail osets/role. Static. |
---|
870 | */ |
---|
871 | #define ROLE_SEPARATOR " <- " |
---|
872 | char *abac_aspect_attr_key(abac_aspect_t *head_ptr, abac_aspect_t *tail_ptr) { |
---|
873 | char *head = abac_aspect_string_with_condition(head_ptr); |
---|
874 | int head_len = strlen(head); |
---|
875 | |
---|
876 | char *tail = abac_aspect_string_with_condition(tail_ptr); |
---|
877 | int tail_len = strlen(tail); |
---|
878 | |
---|
879 | int sep_len = sizeof(ROLE_SEPARATOR) - 1; |
---|
880 | |
---|
881 | // "head <- tail" |
---|
882 | char *ret = abac_xmalloc(head_len + tail_len + sep_len + 1); |
---|
883 | memcpy(ret, head, head_len); |
---|
884 | memcpy(ret + head_len, ROLE_SEPARATOR, sep_len); |
---|
885 | memcpy(ret + head_len + sep_len, tail, tail_len); |
---|
886 | ret[head_len + sep_len + tail_len] = 0; |
---|
887 | |
---|
888 | return ret; |
---|
889 | } |
---|