1 | |
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2 | /*********************************************************** |
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3 | abac_term.c |
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4 | |
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5 | dterm=data term of rt1 |
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6 | term is a kind of dterm |
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7 | ***********************************************************/ |
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8 | #include <assert.h> |
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9 | #include <stdlib.h> |
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10 | #include <stdio.h> |
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11 | #include <string.h> |
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12 | #include <ctype.h> |
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13 | #include <time.h> |
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14 | |
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15 | #include "abac_internal.h" |
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16 | #include "abac_util.h" |
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17 | |
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18 | static int debug=0; |
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19 | |
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20 | /* string will contain either |
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21 | the range literal (static constraint) |
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22 | or |
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23 | the oset/role prologized string (dynamic constraint) |
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24 | union ptr will only be set if it is a dynamic |
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25 | constraint */ |
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26 | struct _abac_condition_t { |
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27 | int type; |
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28 | char *string; |
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29 | abac_aspect_t *of_aspect; |
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30 | }; |
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31 | |
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32 | /* termtype_t/name pair for the data terms |
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33 | idtype_t/name/p_name pair for the named principal term |
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34 | */ |
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35 | |
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36 | struct _abac_term_t { |
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37 | int type; |
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38 | char *name; |
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39 | // e_TERM_PRINCIPAL isnamed |
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40 | int isnamed; |
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41 | char *p_name; |
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42 | char *cn; //XXX ?? might not need this at all |
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43 | abac_condition_t *constraint; |
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44 | }; |
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45 | |
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46 | /* new, free, add one of terms */ |
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47 | struct _abac_param_list_t { |
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48 | abac_list_t *list; |
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49 | }; |
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50 | |
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51 | |
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52 | /******************************************************************/ |
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53 | char *abac_condtype_name(int i) |
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54 | { |
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55 | if(i>_condname_cnt) |
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56 | panic("abac_condtype_name: went out of range on condname"); |
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57 | return (char *) _condname[i]; |
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58 | } |
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59 | |
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60 | abac_condition_t *abac_condition_new(int type,char* condstr,abac_aspect_t *cptr) |
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61 | { |
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62 | if(debug) { |
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63 | printf(" abac_condition_new: \n"); |
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64 | printf(" type is %d(%s)\n", type, abac_condtype_name(type)); |
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65 | printf(" condstr is (%s)\n", condstr); |
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66 | if(cptr) printf(" yes on cptr\n"); |
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67 | else printf(" no on cptr\n"); |
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68 | } |
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69 | abac_condition_t *ptr= |
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70 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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71 | ptr->type=type; |
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72 | ptr->string=abac_xstrdup(condstr); |
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73 | if(cptr) ptr->of_aspect=abac_aspect_dup(cptr); |
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74 | else ptr->of_aspect=NULL; |
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75 | return ptr; |
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76 | } |
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77 | |
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78 | void abac_condition_free(abac_condition_t *ptr) |
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79 | { |
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80 | switch(ptr->type) { |
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81 | case e_COND_OSET: |
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82 | case e_COND_ROLE: |
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83 | abac_aspect_free(ptr->of_aspect); |
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84 | break; |
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85 | case e_COND_RANGE: |
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86 | /* do nothing */ |
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87 | break; |
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88 | } |
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89 | if(ptr->string) free(ptr->string); |
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90 | free(ptr); |
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91 | } |
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92 | |
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93 | abac_condition_t *abac_condition_from_string(char *string) |
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94 | { |
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95 | assert(string); |
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96 | abac_condition_t *nptr= |
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97 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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98 | nptr->type=e_COND_RANGE; |
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99 | nptr->string=abac_xstrdup(string); |
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100 | nptr->of_aspect=NULL; |
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101 | return nptr; |
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102 | } |
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103 | |
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104 | abac_condition_t *abac_condition_from_aspect(abac_aspect_t *ptr) |
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105 | { |
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106 | assert(ptr); |
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107 | abac_condition_t *nptr= |
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108 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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109 | if(abac_aspect_is_role(ptr)) |
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110 | nptr->type=e_COND_ROLE; |
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111 | else nptr->type=e_COND_OSET; |
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112 | nptr->string=NULL; |
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113 | nptr->of_aspect=abac_aspect_dup(ptr); |
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114 | return nptr; |
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115 | } |
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116 | |
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117 | /* made a copy */ |
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118 | abac_condition_t *abac_condition_dup(abac_condition_t *ptr) |
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119 | { |
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120 | abac_condition_t *nptr= |
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121 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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122 | nptr->type=ptr->type; |
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123 | if(ptr->string) |
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124 | nptr->string=abac_xstrdup(ptr->string); |
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125 | else nptr->string=NULL; |
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126 | if(ptr->of_aspect) |
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127 | nptr->of_aspect=abac_aspect_dup(ptr->of_aspect); |
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128 | else nptr->of_aspect=NULL; |
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129 | return nptr; |
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130 | } |
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131 | |
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132 | char *abac_condition_string(abac_condition_t *ptr) |
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133 | { |
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134 | char *string=NULL; |
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135 | switch(ptr->type) { |
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136 | case e_COND_OSET: |
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137 | case e_COND_ROLE: |
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138 | string=abac_aspect_string_with_condition(ptr->of_aspect); |
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139 | break; |
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140 | case e_COND_RANGE: |
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141 | string=abac_xstrdup(ptr->string); |
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142 | break; |
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143 | } |
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144 | return string; |
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145 | } |
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146 | |
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147 | char *abac_condition_typed_string(abac_condition_t *ptr) |
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148 | { |
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149 | char *string=NULL; |
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150 | switch(ptr->type) { |
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151 | case e_COND_OSET: |
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152 | case e_COND_ROLE: |
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153 | string=abac_aspect_typed_string_with_condition(ptr->of_aspect); |
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154 | break; |
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155 | case e_COND_RANGE: |
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156 | string=abac_xstrdup(ptr->string); |
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157 | break; |
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158 | } |
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159 | return string; |
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160 | } |
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161 | |
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162 | /******************************************************************/ |
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163 | |
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164 | int abac_term_isnamed(abac_term_t *term) |
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165 | { |
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166 | if(term->isnamed) return 1; |
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167 | else return 0; |
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168 | } |
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169 | |
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170 | char *abac_term_name(abac_term_t *term) |
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171 | { |
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172 | if(ABAC_IN_PROLOG && term->p_name) { |
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173 | return term->p_name; |
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174 | } |
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175 | return term->name; |
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176 | } |
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177 | |
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178 | char *abac_term_cn(abac_term_t *term) |
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179 | { |
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180 | return term->cn; |
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181 | } |
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182 | |
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183 | abac_condition_t *abac_term_constraint(abac_term_t *term) |
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184 | { |
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185 | return term->constraint; |
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186 | } |
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187 | |
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188 | char *abac_termtype_string(int i) |
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189 | { |
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190 | if(i>_termname_cnt) |
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191 | panic("abac_termtype_string: went out of range on termname"); |
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192 | return (char *) _termname[i]; |
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193 | } |
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194 | |
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195 | char *abac_term_type_name(abac_term_t *term) |
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196 | { |
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197 | if(term->isnamed) |
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198 | return abac_idtype_string(term->type); |
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199 | return abac_termtype_string(term->type); |
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200 | } |
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201 | |
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202 | int abac_term_type(abac_term_t *term) |
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203 | { |
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204 | return term->type; |
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205 | } |
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206 | |
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207 | static bool _abac_termtype_is_time_type(int i) |
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208 | { |
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209 | if (i == e_TERM_TIME) |
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210 | return 1; |
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211 | return 0; |
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212 | } |
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213 | |
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214 | bool abac_term_is_time_type(abac_term_t *term) |
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215 | { |
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216 | return _abac_termtype_is_time_type(term->type); |
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217 | } |
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218 | |
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219 | static bool _abac_termtype_is_string_type(int i) |
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220 | { |
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221 | if (i == e_TERM_STRING) |
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222 | return 1; |
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223 | return 0; |
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224 | } |
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225 | |
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226 | bool abac_term_is_string_type(abac_term_t *term) |
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227 | { |
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228 | return _abac_termtype_is_string_type(term->type); |
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229 | } |
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230 | |
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231 | static bool _abac_termtype_is_integer_type(int i) |
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232 | { |
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233 | if (i == e_TERM_INTEGER) |
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234 | return 1; |
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235 | return 0; |
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236 | } |
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237 | |
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238 | bool abac_term_is_integer_type(abac_term_t *term) |
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239 | { |
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240 | return _abac_termtype_is_integer_type(term->type); |
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241 | } |
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242 | |
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243 | static bool _abac_termtype_is_urn_type(int i) |
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244 | { |
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245 | if (i == e_TERM_URN) |
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246 | return 1; |
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247 | return 0; |
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248 | } |
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249 | |
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250 | bool abac_term_is_urn_type(abac_term_t *term) |
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251 | { |
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252 | return _abac_termtype_is_urn_type(term->type); |
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253 | } |
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254 | |
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255 | int abac_term_verify_term_type(char *type) { |
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256 | int i; |
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257 | |
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258 | if (type == NULL) |
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259 | return 0; |
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260 | |
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261 | for (i = 1; i <= _termname_cnt ; i++) |
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262 | if(strcmp(type,_termname[i])==0) |
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263 | return i; |
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264 | return 0; |
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265 | } |
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266 | |
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267 | char *abac_term_to_time(char *string) |
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268 | { |
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269 | struct tm tm1; |
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270 | char buf[255]; |
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271 | |
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272 | strptime(string, "%Y%m%dT%H%M%S", &tm1); |
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273 | strftime(buf, sizeof(buf), "time(%Y,%m,%d,%H,%M,%S)", &tm1); |
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274 | return strdup(buf); |
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275 | } |
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276 | |
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277 | /* called from yy */ |
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278 | abac_term_t *abac_term_new(int type, char *name, char *cond, abac_aspect_t *cptr) |
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279 | { |
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280 | if(debug) { |
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281 | printf("abac_term_new: \n"); |
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282 | printf(" type is %d(%s)\n", type, abac_termtype_string(type)); |
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283 | printf(" name is (%s)\n", name); |
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284 | if(cond) |
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285 | printf(" cond is %s\n", cond); |
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286 | else printf(" no cond \n"); |
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287 | if(cptr) |
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288 | printf(" cptr is (%s)\n", abac_aspect_string_with_condition(cptr)); |
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289 | else printf(" there is no cptr\n"); |
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290 | } |
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291 | abac_condition_t *constraint=NULL; |
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292 | if (cond) { |
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293 | if(type==e_TERM_PRINCIPAL) { |
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294 | constraint=abac_condition_new(e_COND_ROLE,cond,cptr); |
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295 | } else { |
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296 | if(cptr == NULL) |
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297 | constraint=abac_condition_new(e_COND_RANGE,cond,NULL); |
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298 | else |
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299 | constraint=abac_condition_new(e_COND_OSET,cond,cptr); |
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300 | } |
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301 | } |
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302 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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303 | ptr->isnamed=0; |
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304 | ptr->type=type; |
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305 | ptr->p_name=NULL; |
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306 | /* reformat the term name if it is a time type */ |
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307 | if((!constraint) && _abac_termtype_is_time_type(type) && isdigit(name[0])) { |
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308 | char *tmp=abac_term_to_time(name); |
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309 | ptr->name=tmp; |
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310 | } else { |
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311 | ptr->name=abac_xstrdup(name); |
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312 | } |
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313 | ptr->constraint=constraint; |
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314 | ptr->cn=NULL; |
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315 | return ptr; |
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316 | } |
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317 | |
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318 | abac_term_t *abac_term_create(int type, char *name, abac_condition_t *cptr) |
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319 | { |
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320 | if(debug) { |
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321 | printf("abac_term_create: \n"); |
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322 | printf(" type is %d(%s)\n", type, abac_termtype_string(type)); |
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323 | printf(" name is (%s)\n", name); |
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324 | if(cptr) |
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325 | printf(" cptr is (%s)\n", abac_condition_typed_string(cptr)); |
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326 | else printf(" there is no cptr\n"); |
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327 | } |
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328 | |
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329 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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330 | ptr->isnamed=0; |
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331 | ptr->type=type; |
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332 | ptr->p_name=NULL; |
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333 | /* reformat the term name if it is a time type */ |
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334 | if((!cptr) && _abac_termtype_is_time_type(type) && isdigit(name[0])) { |
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335 | char *tmp=abac_term_to_time(name); |
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336 | ptr->name=tmp; |
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337 | } else { |
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338 | ptr->name=abac_xstrdup(name); |
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339 | } |
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340 | ptr->constraint=(cptr==NULL)?NULL:abac_condition_dup(cptr); |
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341 | ptr->cn=NULL; |
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342 | return ptr; |
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343 | } |
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344 | |
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345 | /* called from yy, named principal type */ |
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346 | abac_term_t *abac_term_named_new(int idtype, char *name) |
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347 | { |
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348 | if(debug) { |
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349 | printf("abac_term_named_new: \n"); |
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350 | printf(" type is %d(%s)\n", idtype, abac_idtype_string(idtype)); |
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351 | printf(" name is (%s)\n", name); |
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352 | } |
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353 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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354 | ptr->isnamed=1; |
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355 | ptr->type=idtype; |
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356 | ptr->name=abac_xstrdup(name); |
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357 | ptr->p_name=NULL; |
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358 | /* if ABAC_CN, no need to attach p */ |
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359 | if(!USE("ABAC_CN")) |
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360 | asprintf(&ptr->p_name,"p%s",name); |
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361 | ptr->constraint=NULL; |
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362 | ptr->cn=NULL; |
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363 | return ptr; |
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364 | } |
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365 | |
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366 | abac_term_t *abac_term_named_create(int idtype, char *name) |
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367 | { |
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368 | if(debug) { |
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369 | printf("abac_term_named_create: \n"); |
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370 | printf(" type is %d(%s)\n", idtype, abac_idtype_string(idtype)); |
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371 | printf(" name is (%s)\n", name); |
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372 | } |
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373 | |
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374 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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375 | ptr->isnamed=1; |
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376 | ptr->type=idtype; |
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377 | ptr->name=abac_xstrdup(name); |
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378 | ptr->p_name=NULL; |
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379 | /* if ABAC_CN, no need to attach p */ |
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380 | if(!USE("ABAC_CN")) |
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381 | asprintf(&ptr->p_name,"p%s",name); |
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382 | ptr->constraint=NULL; |
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383 | ptr->cn=NULL; |
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384 | return ptr; |
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385 | } |
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386 | |
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387 | abac_term_t *abac_term_dup(abac_term_t *ptr) |
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388 | { |
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389 | assert(ptr); |
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390 | abac_term_t *nptr=abac_xmalloc(sizeof(abac_term_t)); |
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391 | nptr->isnamed=ptr->isnamed; |
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392 | nptr->type=ptr->type; |
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393 | nptr->name=abac_xstrdup(ptr->name); |
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394 | nptr->p_name=(ptr->p_name==NULL)?NULL:abac_xstrdup(ptr->p_name); |
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395 | if(ptr->constraint!=NULL) |
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396 | nptr->constraint=abac_condition_dup(ptr->constraint); |
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397 | else nptr->constraint=NULL; |
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398 | nptr->cn=(ptr->cn)==NULL?NULL:abac_xstrdup(ptr->cn); |
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399 | nptr->cn=abac_xstrdup(ptr->cn); |
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400 | return nptr; |
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401 | } |
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402 | |
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403 | void abac_term_free(abac_term_t *ptr) |
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404 | { |
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405 | if(ptr->constraint) { |
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406 | abac_condition_free(ptr->constraint); |
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407 | } |
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408 | free(ptr->name); |
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409 | if(ptr->p_name) free(ptr->p_name); |
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410 | if(ptr->cn) free(ptr->cn); |
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411 | free(ptr); |
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412 | } |
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413 | |
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414 | abac_term_t *abac_term_add_constraint(abac_term_t *ptr, abac_condition_t *cond) |
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415 | { |
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416 | if(ptr->constraint) { |
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417 | abac_condition_free(ptr->constraint); |
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418 | } |
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419 | ptr->constraint = abac_condition_dup(cond); |
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420 | return ptr; |
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421 | } |
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422 | |
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423 | /* name or name:cond */ |
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424 | static char *abac_term_string_with_condition(abac_term_t *ptr) |
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425 | { |
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426 | char *tmp=NULL; |
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427 | char *cond=NULL; |
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428 | char *name=abac_term_name(ptr); |
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429 | if(ptr->constraint) { |
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430 | cond=abac_condition_string(ptr->constraint); |
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431 | } |
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432 | if(cond) { |
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433 | asprintf(&tmp,"%s:%s", name, cond); |
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434 | free(cond); |
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435 | } else tmp=abac_xstrdup(name); |
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436 | return tmp; |
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437 | } |
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438 | |
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439 | /* [type:name] or [typed:name:cond] */ |
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440 | static char *abac_term_typed_string_with_condition(abac_term_t *ptr) |
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441 | { |
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442 | char *tmp=NULL; |
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443 | char *cond=NULL; |
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444 | char *name=abac_term_name(ptr); |
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445 | char *type=abac_term_type_name(ptr); |
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446 | if(ptr->constraint) { |
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447 | cond=abac_condition_typed_string(ptr->constraint); |
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448 | } |
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449 | if(cond) { |
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450 | asprintf(&tmp,"[%s:%s:%s]", type, name, cond); |
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451 | free(cond); |
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452 | } else |
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453 | asprintf(&tmp,"[%s:%s]", type, name); |
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454 | if(debug) printf("abac_term_typed_string_with_condition: (%s)\n",tmp); |
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455 | return tmp; |
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456 | } |
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457 | |
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458 | char *abac_term_string(abac_term_t *ptr) |
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459 | { |
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460 | return abac_xstrdup(abac_term_name(ptr)); |
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461 | } |
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462 | |
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463 | char *abac_term_typed_string(abac_term_t *ptr) |
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464 | { |
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465 | return abac_term_typed_string_with_condition(ptr); |
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466 | } |
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467 | |
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468 | /********************************************************************/ |
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469 | abac_param_list_t *abac_param_list_new(abac_term_t *term) |
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470 | { |
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471 | abac_param_list_t *ptr=abac_xmalloc(sizeof(abac_param_list_t)); |
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472 | ptr->list=abac_list_new(); |
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473 | abac_list_add(ptr->list, abac_term_dup(term)); |
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474 | return ptr; |
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475 | } |
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476 | |
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477 | abac_param_list_t *abac_param_list_free(abac_param_list_t *ptr) |
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478 | { |
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479 | abac_list_t *list=ptr->list; |
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480 | abac_term_t *cur; |
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481 | abac_list_foreach(list, cur, |
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482 | abac_term_free(cur); |
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483 | ); |
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484 | abac_list_free(list); |
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485 | free(ptr); |
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486 | } |
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487 | |
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488 | abac_param_list_t *abac_param_list_add_term(abac_param_list_t *ptr, abac_term_t *term) |
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489 | { |
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490 | abac_list_t *list=ptr->list; |
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491 | abac_list_add(list, abac_term_dup(term)); |
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492 | return ptr; |
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493 | } |
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494 | |
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495 | |
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496 | /* term1:cond1,term2:cond2 */ |
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497 | char* abac_param_list_string_with_condition(abac_param_list_t *ptr) |
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498 | { |
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499 | if(ptr->list == NULL) |
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500 | return ""; |
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501 | |
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502 | abac_term_t *cur; |
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503 | char *tmp=NULL, *final=NULL; |
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504 | abac_list_foreach(ptr->list, cur, |
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505 | char *s=abac_term_string_with_condition(cur); |
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506 | if(final==NULL) { |
---|
507 | final=abac_xstrdup(s); |
---|
508 | } else { |
---|
509 | tmp=final; |
---|
510 | final=NULL; |
---|
511 | asprintf(&final,"%s,%s",tmp,s); |
---|
512 | free(tmp); |
---|
513 | } |
---|
514 | free(s); |
---|
515 | ); |
---|
516 | return final; |
---|
517 | } |
---|
518 | |
---|
519 | /* [type:term1:cond1],[type:term2:cond2] */ |
---|
520 | char* abac_param_list_typed_string_with_condition(abac_param_list_t *ptr) |
---|
521 | { |
---|
522 | if(ptr->list == NULL) |
---|
523 | return ""; |
---|
524 | |
---|
525 | abac_term_t *cur; |
---|
526 | char *tmp=NULL, *final=NULL; |
---|
527 | abac_list_foreach(ptr->list, cur, |
---|
528 | char *s=abac_term_typed_string_with_condition(cur); |
---|
529 | if(final==NULL) { |
---|
530 | final=abac_xstrdup(s); |
---|
531 | } else { |
---|
532 | tmp=final; |
---|
533 | final=NULL; |
---|
534 | asprintf(&final,"%s,%s",tmp,s); |
---|
535 | if(debug) printf("typed param so far, %s\n", final); |
---|
536 | free(tmp); |
---|
537 | } |
---|
538 | free(s); |
---|
539 | ); |
---|
540 | if(debug) printf("typed param so far, %s\n", final); |
---|
541 | return final; |
---|
542 | } |
---|
543 | |
---|
544 | /* term1,term2 */ |
---|
545 | char* abac_param_list_string(abac_param_list_t *ptr) |
---|
546 | { |
---|
547 | abac_list_t *list=ptr->list; |
---|
548 | if(list == NULL) |
---|
549 | return ""; |
---|
550 | abac_term_t *cur; |
---|
551 | char *final=NULL; |
---|
552 | char *tmp=NULL; |
---|
553 | |
---|
554 | /* collect up all the string */ |
---|
555 | abac_list_foreach(list, cur, |
---|
556 | char *s=abac_term_string(cur); |
---|
557 | if(final==NULL) { |
---|
558 | final=abac_xstrdup(s); |
---|
559 | } else { |
---|
560 | tmp=final; |
---|
561 | final=NULL; |
---|
562 | asprintf(&final,"%s,%s",tmp,s); |
---|
563 | if(debug) printf("param so far, %s\n", final); |
---|
564 | free(tmp); |
---|
565 | } |
---|
566 | free(s); |
---|
567 | ); |
---|
568 | if(debug) printf("param so far, %s\n", final); |
---|
569 | return final; |
---|
570 | } |
---|
571 | |
---|
572 | /* make a stack of it for the abac.hh */ |
---|
573 | abac_term_t **abac_param_list_vectorize(abac_param_list_t *ptr) |
---|
574 | { |
---|
575 | abac_term_t **terms=NULL; |
---|
576 | abac_list_t *list=ptr->list; |
---|
577 | int cnt=0; |
---|
578 | if(list != NULL) |
---|
579 | cnt=abac_list_size(list); |
---|
580 | |
---|
581 | // make the array (leave space to NULL terminate it) |
---|
582 | // n.b., even if the list is empty, we still return an array that |
---|
583 | // only contains the NULL terminator |
---|
584 | terms = abac_xmalloc(sizeof(abac_term_t *) * (cnt + 1)); |
---|
585 | |
---|
586 | abac_term_t *cur; |
---|
587 | int i = 0; |
---|
588 | if(i<cnt) { |
---|
589 | abac_list_foreach(list, cur, |
---|
590 | terms[i++] = abac_term_dup(cur); |
---|
591 | ); |
---|
592 | } |
---|
593 | terms[i] = NULL; |
---|
594 | return terms; |
---|
595 | } |
---|
596 | |
---|
597 | void abac_terms_free(abac_term_t **terms) |
---|
598 | { |
---|
599 | /* always null terminating */ |
---|
600 | assert(terms); |
---|
601 | int i; |
---|
602 | for (i = 0; terms[i] != NULL; ++i) { |
---|
603 | abac_term_free(terms[i]); |
---|
604 | } |
---|
605 | free(terms); |
---|
606 | } |
---|