1 | |
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2 | /***********************************************************************/ |
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3 | /* clause generation called to generate credential clauses with a */ |
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4 | /* given credential syntax structure (made from parser or from a */ |
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5 | /* pre-existing structure */ |
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6 | /* There are 2 passes, */ |
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7 | /* first pass, process named cred id, and constraint range/role/oset */ |
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8 | /* 2nd pass, process rule left / right */ |
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9 | /***********************************************************************/ |
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10 | #include <stdio.h> |
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11 | #include <assert.h> |
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12 | #include <stdlib.h> |
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13 | |
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14 | #include "abac_pl_gen.h" |
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15 | #include "abac_internal.h" |
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16 | #include "abac_list.h" |
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17 | #include "abac_util.h" |
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18 | #include "abac_context.h" |
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19 | #include "abac_aspect.h" |
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20 | #include "abac_term.h" |
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21 | #include "abac_verifier.h" |
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22 | |
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23 | #include "uthash.h" |
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24 | |
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25 | // index to generate C1,C2.. |
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26 | static int cred_count=0; |
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27 | |
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28 | static int debug=0; |
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29 | int ABAC_IN_PROLOG=0; |
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30 | |
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31 | abac_list_t *abac_pl_constraints=NULL; |
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32 | |
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33 | /* to track id certs within a rule clause */ |
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34 | typedef struct _abac_id_cert_t { |
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35 | char *principalname; |
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36 | int type; /* keyidtype */ |
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37 | } abac_id_cert_t; |
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38 | abac_list_t *abac_pl_id_certs = NULL; |
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39 | |
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40 | static int gg_using_this=0; |
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41 | char* yyfptr_encode=NULL; |
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42 | |
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43 | |
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44 | /* local */ |
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45 | char *generate_pl_type_clause(abac_context_t *,char *, int); |
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46 | /***********************************************************************/ |
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47 | /* this is called by creddy as a shortcut */ |
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48 | int generate_pl_clauses_dump(abac_context_t *ctxt, abac_aspect_t *head_aspect, |
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49 | abac_aspect_t *tail_aspect, char *attr_string, char *encoded_attr_string, |
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50 | char *filename, int using_this) |
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51 | { |
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52 | FILE *out; |
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53 | abac_list_t *clauses = generate_pl_clauses(ctxt,head_aspect, tail_aspect, encoded_attr_string,using_this); |
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54 | |
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55 | int cnt=abac_list_size(clauses); |
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56 | out = fopen(filename, "a+"); |
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57 | char *cur=NULL; |
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58 | fprintf(out,"##########################################\n"); |
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59 | fprintf(out,"## %s <- %s\n", abac_aspect_string_with_condition(head_aspect), |
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60 | abac_aspect_string_with_condition(tail_aspect)); |
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61 | fprintf(out,"## %s\n",attr_string); |
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62 | abac_list_foreach(clauses, cur, |
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63 | fprintf(out,"##\n%s\n",cur); |
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64 | if(cur) free(cur); |
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65 | ); |
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66 | fprintf(out,"\n"); |
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67 | fclose(out); |
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68 | abac_list_free(clauses); |
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69 | return cnt; |
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70 | } |
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71 | |
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72 | /***********************************************************************/ |
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73 | static void _set_yyfptr_encode(char *string) |
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74 | { |
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75 | yyfptr_encode=abac_xstrdup(string); |
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76 | } |
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77 | |
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78 | /***********************************************************************/ |
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79 | static char* isX() |
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80 | { |
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81 | static char x_string[2]="X"; |
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82 | static char this_string[5]="This"; |
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83 | if(gg_using_this) |
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84 | return this_string; |
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85 | else |
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86 | return x_string; |
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87 | } |
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88 | |
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89 | static int _get_next_cred_idx() |
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90 | { |
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91 | cred_count++; |
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92 | return cred_count; |
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93 | } |
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94 | |
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95 | /* remember to free the returned string */ |
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96 | static char *_compose_cred_list() |
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97 | { |
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98 | int i=cred_count; |
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99 | if(cred_count==0) return ""; |
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100 | |
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101 | char *clist=(char *)abac_xmalloc(sizeof(char)*(cred_count)*3); |
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102 | strcpy(clist,"C1"); |
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103 | if (cred_count==1) return clist; |
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104 | |
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105 | i=1; |
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106 | while(i!=cred_count) { |
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107 | i++; |
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108 | sprintf(clist,"%s,C%d",clist,i); |
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109 | } |
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110 | return clist; |
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111 | } |
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112 | |
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113 | |
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114 | /************************************************************************/ |
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115 | /* this is for tracking prolog constraints */ |
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116 | void abac_pl_init_constraints() |
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117 | { |
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118 | abac_pl_constraints = abac_list_new(); |
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119 | } |
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120 | |
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121 | void abac_pl_free_constraints() |
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122 | { |
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123 | char *cur; |
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124 | abac_list_foreach(abac_pl_constraints, cur, |
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125 | if(cur) |
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126 | free(cur); |
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127 | ); |
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128 | abac_list_free(abac_pl_constraints); |
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129 | abac_pl_constraints=NULL; |
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130 | } |
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131 | |
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132 | int abac_pl_cnt_constraints() |
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133 | { |
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134 | return abac_list_size(abac_pl_constraints); |
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135 | } |
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136 | |
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137 | char *abac_pl_string_constraints() |
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138 | { |
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139 | int first=1; |
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140 | char *tmp=NULL; |
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141 | char *final=NULL; |
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142 | char* cur; |
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143 | abac_list_foreach(abac_pl_constraints, cur, |
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144 | if(cur) |
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145 | if(first) { |
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146 | final=abac_xstrdup(cur); |
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147 | first=0; |
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148 | } else { |
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149 | tmp=final; |
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150 | final=NULL; |
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151 | int cnt=asprintf(&final,"%s,%s", tmp, cur); |
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152 | } |
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153 | ); |
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154 | return final; |
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155 | } |
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156 | |
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157 | void abac_pl_add_constraints(char *constraint) |
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158 | { |
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159 | if(abac_pl_constraints == NULL) |
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160 | abac_pl_init_constraints(); |
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161 | char* nptr=abac_xstrdup(constraint); |
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162 | abac_list_add(abac_pl_constraints, nptr); |
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163 | } |
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164 | |
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165 | |
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166 | /************************************************************************/ |
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167 | void abac_pl_init_id_certs() |
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168 | { |
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169 | abac_pl_id_certs = abac_list_new(); |
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170 | } |
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171 | |
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172 | void abac_pl_free_id_certs() |
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173 | { |
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174 | if(abac_pl_id_certs==NULL) |
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175 | return; |
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176 | |
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177 | abac_id_cert_t *id; |
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178 | abac_list_foreach(abac_pl_id_certs, id, |
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179 | if(id) |
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180 | free(id->principalname); |
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181 | free(id); |
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182 | ); |
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183 | abac_list_free(abac_pl_id_certs); |
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184 | abac_pl_id_certs = NULL; |
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185 | } |
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186 | |
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187 | int abac_pl_cnt_id_certs() |
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188 | { |
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189 | return abac_list_size(abac_pl_id_certs); |
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190 | } |
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191 | |
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192 | char *abac_pl_string_id_certs(abac_context_t *ctxt) |
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193 | { |
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194 | char *tmp=NULL; |
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195 | abac_id_cert_t *cur; |
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196 | abac_list_foreach(abac_pl_id_certs, cur, |
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197 | if(cur) |
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198 | if(tmp==NULL) { |
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199 | tmp=generate_pl_type_clause(ctxt,cur->principalname,cur->type); |
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200 | } else { |
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201 | asprintf(&tmp,"%s,%s", tmp, |
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202 | generate_pl_type_clause(ctxt,cur->principalname,cur->type)); |
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203 | } |
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204 | ); |
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205 | return tmp; |
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206 | } |
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207 | |
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208 | void abac_pl_add_id_certs(char *principalname, int type) |
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209 | { |
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210 | abac_id_cert_t *id_cert=NULL; |
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211 | int found=0; |
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212 | abac_id_cert_t *cur; |
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213 | |
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214 | if(debug) { |
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215 | fprintf(stderr,"add_id_certs: adding --> (%s)\n", principalname); |
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216 | } |
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217 | |
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218 | if(abac_pl_id_certs == NULL) { |
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219 | abac_pl_init_id_certs(); |
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220 | } else { |
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221 | abac_list_foreach(abac_pl_id_certs, cur, |
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222 | if(cur) |
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223 | if(strcmp(cur->principalname,principalname)==0) { |
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224 | found=1; |
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225 | break; |
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226 | } |
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227 | ); |
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228 | } |
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229 | |
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230 | if (found) { |
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231 | return; |
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232 | } else { |
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233 | id_cert=abac_xmalloc(sizeof(abac_id_cert_t)); |
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234 | id_cert->principalname=abac_xstrdup(principalname); |
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235 | id_cert->type=type; |
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236 | abac_list_add(abac_pl_id_certs, id_cert); |
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237 | } |
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238 | } |
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239 | |
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240 | /***********************************************************************/ |
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241 | /* generate role(p_name, r_name, param..) */ |
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242 | /* or oset(p_name, r_name, param..) */ |
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243 | /* mainly for aspect that is if A.R <- B format */ |
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244 | static char* generate_pl_head_string(abac_aspect_t *ptr) |
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245 | { |
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246 | char *tmp=NULL; |
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247 | char *principalname; |
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248 | PROLOG(principalname=abac_aspect_principal_name(ptr);); |
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249 | char *aspectname=abac_aspect_aspect_name(ptr); |
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250 | char *typestring=abac_aspect_type_string(ptr); |
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251 | char *param_string=NULL; |
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252 | int cnt=0; |
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253 | |
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254 | /* can not be a linked role */ |
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255 | abac_param_list_t *aspect_params=abac_aspect_aspect_params(ptr); |
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256 | if(aspect_params) { |
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257 | PROLOG(param_string=abac_param_list_string(aspect_params);); |
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258 | } |
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259 | |
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260 | if (param_string != NULL) { |
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261 | cnt=asprintf(&tmp,"%s(%s,%s,%s)", |
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262 | typestring, principalname, aspectname, param_string); |
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263 | free(param_string); |
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264 | } else { |
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265 | cnt=asprintf(&tmp,"%s(%s,%s)", |
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266 | typestring, principalname, aspectname); |
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267 | } |
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268 | |
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269 | if(debug && tmp) fprintf(stderr,"generate_pl_head_string: (%s)\n",tmp); |
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270 | if(cnt>0) |
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271 | return tmp; |
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272 | else |
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273 | return NULL; |
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274 | } |
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275 | |
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276 | /* generate role(p_name, r_name, param..) with isMember call ?? */ |
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277 | /* generate oset(p_name, r_name, param..) with isMember call ?? */ |
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278 | /* for aspect that could also be with linked role */ |
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279 | static char* generate_pl_tail_string(abac_context_t *ctxt,abac_aspect_t *ptr, char *varX) |
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280 | { |
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281 | char *tmp=NULL; |
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282 | char *namespace=abac_context_namespace(ctxt); |
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283 | |
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284 | /* for oset case, |
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285 | A.oset <- B |
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286 | A.oset <- Obj |
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287 | A.oset <- B.oset |
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288 | A.oset <- B.role.oset |
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289 | */ |
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290 | /* o only if it is an oset and object */ |
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291 | if(abac_aspect_is_object(ptr)) { |
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292 | char *objectname=abac_aspect_object_name(ptr); |
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293 | tmp=abac_xstrdup(objectname); |
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294 | return tmp; |
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295 | } else { |
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296 | char *principalname; |
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297 | PROLOG(principalname=abac_aspect_principal_name(ptr);); |
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298 | char *aspectname=abac_aspect_aspect_name(ptr); |
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299 | char *linkedname=abac_aspect_linked_role_name(ptr); |
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300 | char *typestring=abac_aspect_type_string(ptr); |
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301 | |
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302 | char *param_string=NULL; |
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303 | char *linked_param_string=NULL; |
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304 | int cnt=0; |
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305 | |
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306 | abac_param_list_t *aspect_params=abac_aspect_aspect_params(ptr); |
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307 | if(aspect_params) { |
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308 | PROLOG(param_string=abac_param_list_string(aspect_params);); |
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309 | } |
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310 | |
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311 | abac_param_list_t *linked_role_params=abac_aspect_linked_role_params(ptr); |
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312 | if(linked_role_params) { |
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313 | PROLOG(linked_param_string=abac_param_list_string(linked_role_params);); |
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314 | } |
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315 | |
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316 | /* b.r.r */ |
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317 | if(linkedname!=NULL && aspectname!=NULL && principalname!=NULL ) { |
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318 | int fst=_get_next_cred_idx(); |
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319 | int snd=_get_next_cred_idx(); |
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320 | if(linked_param_string !=NULL) { |
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321 | if (param_string != NULL) { |
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322 | cnt=asprintf(&tmp,"isMember(%s,Y,role(%s,%s,%s),C%d),isMember(%s,%s,%s(Y,%s,%s),C%d)", |
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323 | namespace, principalname, linkedname,linked_param_string,fst, |
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324 | namespace,varX, typestring, aspectname,param_string,snd); |
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325 | free(param_string); |
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326 | } else { |
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327 | cnt=asprintf(&tmp,"isMember(%s,Y,role(%s,%s,%s),C%d),isMember(%s,%s,%s(Y,%s),C%d)", |
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328 | namespace, principalname, linkedname,linked_param_string,fst, |
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329 | namespace, varX, typestring, aspectname,snd); |
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330 | } |
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331 | free(linked_param_string); |
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332 | } else { |
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333 | if (aspect_params != NULL) { |
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334 | cnt=asprintf(&tmp,"isMember(%s,Y,role(%s,%s),C%d),isMember(%s,%s,%s(Y,%s,%s),C%d)", |
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335 | namespace, principalname,linkedname,fst, |
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336 | namespace, varX,typestring, aspectname,param_string,snd); |
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337 | free(param_string); |
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338 | } else { |
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339 | cnt=asprintf(&tmp,"isMember(%s,Y,role(%s,%s),C%d),isMember(%s,%s,%s(Y,%s),C%d)", |
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340 | namespace, principalname, linkedname,fst, |
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341 | namespace, varX,typestring, aspectname,snd); |
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342 | } |
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343 | } |
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344 | if(cnt>0) |
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345 | return tmp; |
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346 | else |
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347 | return NULL; |
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348 | } |
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349 | /* b.r */ |
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350 | if(linkedname==NULL && aspectname!=NULL && principalname!=NULL ) { |
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351 | int fst=_get_next_cred_idx(); |
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352 | if(param_string != NULL) { |
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353 | cnt=asprintf(&tmp,"isMember(%s,%s,%s(%s,%s,%s),C%d)", |
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354 | namespace,varX,typestring, |
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355 | principalname, aspectname, param_string, fst); |
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356 | free(param_string); |
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357 | } else { |
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358 | cnt=asprintf(&tmp,"isMember(%s,%s,%s(%s,%s),C%d)", |
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359 | namespace,varX, typestring, |
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360 | principalname, aspectname, fst); |
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361 | } |
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362 | if(cnt>0) |
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363 | return tmp; |
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364 | else |
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365 | return NULL; |
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366 | } |
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367 | /* b */ |
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368 | if(linkedname==NULL && aspectname==NULL && principalname!=NULL ) { |
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369 | tmp=abac_xstrdup(principalname); |
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370 | return tmp; |
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371 | } |
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372 | |
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373 | return tmp; |
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374 | } |
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375 | return tmp; |
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376 | } |
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377 | |
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378 | |
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379 | /********************************************************************************/ |
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380 | |
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381 | static char *_build_constraint_rule_clause(abac_context_t *ctxt,char *head_string, char *tail_string) |
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382 | { |
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383 | /*for A.R <- B */ |
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384 | if(debug) |
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385 | fprintf(stderr,"calling _build_constraint_rule_clause (%s)(%s)\n", head_string, tail_string); |
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386 | char *tmp; |
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387 | int idx=_get_next_cred_idx(); |
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388 | asprintf(&tmp, "isMember(%s,%s,%s,C%d)", |
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389 | abac_context_namespace(ctxt),tail_string,head_string,idx); |
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390 | return tmp; |
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391 | } |
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392 | |
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393 | static char *_build_rule_clause(abac_context_t *ctxt, char *aspectname, char *head_string, |
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394 | char *tail_string, char *id_string, char *constraint_string, char *varX) |
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395 | { |
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396 | char *tmp=NULL; |
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397 | char *namespace=abac_context_namespace(ctxt); |
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398 | |
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399 | if(aspectname == NULL) { |
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400 | /* A.R <- B */ |
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401 | if(id_string == NULL && constraint_string == NULL) { |
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402 | asprintf(&tmp, "isMember(%s,%s,%s,['%s'])", |
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403 | namespace, tail_string,head_string,yyfptr_encode); |
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404 | } else { |
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405 | if(id_string == NULL) { |
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406 | asprintf(&tmp, "isMember(%s,%s,%s,['%s']) :- %s", |
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407 | namespace, tail_string,head_string,yyfptr_encode, |
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408 | constraint_string); |
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409 | } else if(constraint_string == NULL) { |
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410 | asprintf(&tmp, "isMember(%s,%s,%s,['%s']) :- %s", |
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411 | namespace, tail_string,head_string,yyfptr_encode, |
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412 | id_string); |
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413 | } else { asprintf(&tmp, "isMember(%s,%s,%s,['%s']) :- %s,%s", |
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414 | namespace, tail_string,head_string,yyfptr_encode, |
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415 | id_string, constraint_string); |
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416 | } |
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417 | } |
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418 | } else { |
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419 | /* A.R <- B.R */ |
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420 | /* A.R <- B.R.R */ |
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421 | if (cred_count==0) { |
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422 | if(id_string == NULL && constraint_string == NULL) { |
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423 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s", |
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424 | namespace,varX, |
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425 | head_string, yyfptr_encode, tail_string); |
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426 | } else { |
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427 | if(id_string == NULL) { |
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428 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s", |
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429 | namespace,varX, |
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430 | head_string, yyfptr_encode, tail_string, |
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431 | constraint_string); |
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432 | } else if(constraint_string == NULL) { |
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433 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s", |
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434 | namespace,varX, |
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435 | head_string, yyfptr_encode, id_string, |
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436 | tail_string); |
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437 | } else { |
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438 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s,%s", |
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439 | namespace,varX, |
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440 | head_string, yyfptr_encode, id_string, |
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441 | tail_string, constraint_string); |
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442 | } |
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443 | } |
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444 | } else { |
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445 | char *tmp_cred_list=_compose_cred_list(); |
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446 | if(id_string == NULL && constraint_string == NULL) { |
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447 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, appendL([['%s'],%s],L)", |
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448 | namespace,varX, |
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449 | head_string, tail_string, |
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450 | yyfptr_encode, tmp_cred_list); |
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451 | } else { |
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452 | if(id_string == NULL) { |
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453 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
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454 | namespace,varX, |
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455 | head_string, tail_string, constraint_string, |
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456 | yyfptr_encode, tmp_cred_list); |
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457 | } else if(constraint_string == NULL) { |
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458 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
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459 | namespace,varX, |
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460 | head_string, id_string, tail_string, |
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461 | yyfptr_encode, tmp_cred_list); |
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462 | } else { |
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463 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, %s, appendL([['%s'],%s],L)", |
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464 | namespace,varX, |
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465 | head_string, id_string, tail_string, |
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466 | constraint_string, |
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467 | yyfptr_encode, tmp_cred_list); |
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468 | } |
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469 | } |
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470 | free(tmp_cred_list); |
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471 | cred_count=0; |
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472 | } |
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473 | } |
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474 | return tmp; |
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475 | } |
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476 | |
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477 | |
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478 | static char *generate_pl_rule_clause(abac_context_t *ctxt,char *head_rule_string, |
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479 | abac_aspect_t *tail_rule, char *id_string, char *constraint_string, char* varX) |
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480 | { |
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481 | char *aspectname=abac_aspect_aspect_name(tail_rule); |
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482 | char *tail_rule_string=generate_pl_tail_string(ctxt,tail_rule,varX); |
---|
483 | if(aspectname == NULL && tail_rule_string == NULL) |
---|
484 | goto error; |
---|
485 | char *tmp=_build_rule_clause(ctxt,aspectname, |
---|
486 | head_rule_string, tail_rule_string, id_string, constraint_string, varX); |
---|
487 | if(tail_rule_string) free(tail_rule_string); |
---|
488 | return tmp; |
---|
489 | |
---|
490 | error: |
---|
491 | if(tail_rule_string) free(tail_rule_string); |
---|
492 | return NULL; |
---|
493 | } |
---|
494 | |
---|
495 | static char *_add_string(char *dstr, char *nstr) |
---|
496 | { |
---|
497 | if(strlen(dstr)==0) { |
---|
498 | dstr=abac_xstrdup(nstr); |
---|
499 | return dstr; |
---|
500 | } else { |
---|
501 | int len = strlen(dstr)+strlen(nstr)+2; |
---|
502 | char *tmp=abac_xmalloc(len*sizeof(char)); |
---|
503 | sprintf(tmp,"%s,%s", dstr,nstr); |
---|
504 | free(dstr); |
---|
505 | return tmp; |
---|
506 | } |
---|
507 | return NULL; |
---|
508 | } |
---|
509 | |
---|
510 | static char *_build_intersecting_clause(abac_context_t *ctxt, |
---|
511 | char *head_role_string, char *tail_role_string, char* id_string, |
---|
512 | char* constraint_string,char *varX) |
---|
513 | { |
---|
514 | char *tmp; |
---|
515 | char *namespace=abac_context_namespace(ctxt); |
---|
516 | |
---|
517 | if (cred_count==0) { |
---|
518 | if(id_string == NULL && constraint_string == NULL) { |
---|
519 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s", |
---|
520 | namespace,varX, |
---|
521 | head_role_string, yyfptr_encode, tail_role_string); |
---|
522 | } else { |
---|
523 | if(id_string == NULL) { |
---|
524 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s", |
---|
525 | namespace,varX, |
---|
526 | head_role_string, yyfptr_encode, |
---|
527 | tail_role_string, constraint_string); |
---|
528 | } else if(constraint_string == NULL) { |
---|
529 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s", |
---|
530 | namespace,varX, |
---|
531 | head_role_string, yyfptr_encode, |
---|
532 | id_string, tail_role_string); |
---|
533 | } else { |
---|
534 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s, %s", |
---|
535 | namespace,varX, |
---|
536 | head_role_string, yyfptr_encode, |
---|
537 | id_string, tail_role_string, constraint_string); |
---|
538 | } |
---|
539 | } |
---|
540 | } else { |
---|
541 | char *tmp_cred_list=_compose_cred_list(); |
---|
542 | if(id_string == NULL && constraint_string == NULL) { |
---|
543 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, appendL([['%s'],%s],L)", |
---|
544 | namespace,varX, |
---|
545 | head_role_string, tail_role_string, |
---|
546 | yyfptr_encode, tmp_cred_list); |
---|
547 | } else { |
---|
548 | if(id_string == NULL) { |
---|
549 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
550 | namespace,varX, |
---|
551 | head_role_string, tail_role_string, constraint_string, |
---|
552 | yyfptr_encode, tmp_cred_list); |
---|
553 | } else if(constraint_string == NULL) { |
---|
554 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
555 | namespace,varX, |
---|
556 | head_role_string, id_string, tail_role_string, |
---|
557 | yyfptr_encode, tmp_cred_list); |
---|
558 | } else { |
---|
559 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, %s, appendL([['%s'],%s],L)", |
---|
560 | namespace,varX, |
---|
561 | head_role_string, id_string, tail_role_string, constraint_string, |
---|
562 | yyfptr_encode, tmp_cred_list); |
---|
563 | } |
---|
564 | } |
---|
565 | free(tmp_cred_list); |
---|
566 | cred_count=0; |
---|
567 | } |
---|
568 | return tmp; |
---|
569 | } |
---|
570 | |
---|
571 | static char *generate_pl_intersecting_clause(abac_context_t *ctxt, |
---|
572 | char *head_role_string, abac_aspect_t *tail_role, char* id_string, |
---|
573 | char* constraint_string, char *varX) |
---|
574 | { |
---|
575 | char *tmp=NULL; |
---|
576 | char* tail_role_string=NULL; |
---|
577 | abac_list_t *list=abac_aspect_prereqs(tail_role); |
---|
578 | /* A.R <- B.R & C.R.R */ |
---|
579 | /* A.O <- B.O & C.R.O */ |
---|
580 | |
---|
581 | if (list != NULL) { |
---|
582 | abac_aspect_t *cur; |
---|
583 | abac_list_foreach(list, cur, |
---|
584 | char *ntmp=generate_pl_tail_string(ctxt,cur,varX); |
---|
585 | if(debug) fprintf(stderr," intersecting tail: (%s)\n",ntmp); |
---|
586 | if(tail_role_string==NULL) { |
---|
587 | tail_role_string=abac_xstrdup(ntmp); |
---|
588 | } else { |
---|
589 | tmp=tail_role_string; |
---|
590 | tail_role_string=NULL; |
---|
591 | asprintf(&tail_role_string,"%s, %s",tmp,ntmp); |
---|
592 | free(tmp); |
---|
593 | } |
---|
594 | free(ntmp); |
---|
595 | ); |
---|
596 | } |
---|
597 | |
---|
598 | if(debug) fprintf(stderr," final intersecting tail: (%s)\n",tail_role_string); |
---|
599 | tmp=_build_intersecting_clause(ctxt,head_role_string, tail_role_string, |
---|
600 | id_string,constraint_string, varX); |
---|
601 | if(tail_role_string) free(tail_role_string); |
---|
602 | return tmp; |
---|
603 | } |
---|
604 | |
---|
605 | /**** THIS NEEDS TO BE LOCKED *****/ |
---|
606 | /* XXXX */ |
---|
607 | /* generate the prolog isMember rule clause for the credential stmt */ |
---|
608 | abac_list_t *generate_pl_clauses(abac_context_t *ctxt,abac_aspect_t *head_aspect, |
---|
609 | abac_aspect_t *tail_aspect,char *encoded_attr_string, int using_this) |
---|
610 | { |
---|
611 | char *tmp=NULL; |
---|
612 | char *id_clauses_string=NULL; |
---|
613 | char *constraint_clauses_string=NULL; |
---|
614 | abac_list_t *clauses=abac_list_new(); |
---|
615 | |
---|
616 | gg_using_this=using_this; |
---|
617 | |
---|
618 | if(encoded_attr_string!=NULL) |
---|
619 | _set_yyfptr_encode(encoded_attr_string); |
---|
620 | |
---|
621 | /* preprocess both sides first */ |
---|
622 | preprocess_pl_head(ctxt,head_aspect); |
---|
623 | preprocess_pl_tail(ctxt,tail_aspect); |
---|
624 | |
---|
625 | int cnt=abac_pl_cnt_id_certs(); |
---|
626 | if(cnt > 0) { /* string it up */ |
---|
627 | id_clauses_string=abac_pl_string_id_certs(ctxt); |
---|
628 | abac_pl_free_id_certs(); |
---|
629 | } |
---|
630 | |
---|
631 | /* make a loop here */ |
---|
632 | cnt=abac_pl_cnt_constraints(); |
---|
633 | if(cnt > 0) { |
---|
634 | constraint_clauses_string=abac_pl_string_constraints(); |
---|
635 | abac_pl_free_constraints(); |
---|
636 | } |
---|
637 | |
---|
638 | /* generate head's string */ |
---|
639 | char *head_string=generate_pl_head_string(head_aspect); |
---|
640 | if(head_string == NULL) |
---|
641 | goto error; |
---|
642 | |
---|
643 | /* tail side */ |
---|
644 | if(abac_aspect_is_intersection(tail_aspect)) { |
---|
645 | tmp=generate_pl_intersecting_clause(ctxt,head_string, tail_aspect, |
---|
646 | id_clauses_string, constraint_clauses_string, isX()); |
---|
647 | } else { |
---|
648 | tmp=generate_pl_rule_clause(ctxt,head_string, tail_aspect, |
---|
649 | id_clauses_string, constraint_clauses_string, isX()); |
---|
650 | } |
---|
651 | if(tmp==NULL) |
---|
652 | goto error; |
---|
653 | |
---|
654 | abac_list_add(clauses,tmp); |
---|
655 | return clauses; |
---|
656 | |
---|
657 | error: |
---|
658 | if(head_string) free(head_string); |
---|
659 | if(id_clauses_string) free(id_clauses_string); |
---|
660 | if(constraint_clauses_string) free(constraint_clauses_string); |
---|
661 | return clauses; |
---|
662 | } |
---|
663 | |
---|
664 | char *generate_pl_constraint_clause(abac_context_t *ctxt,abac_aspect_t *head_aspect, char *tail_string) |
---|
665 | { |
---|
666 | char *tmp=NULL; |
---|
667 | char *head_string=NULL; |
---|
668 | |
---|
669 | if(abac_aspect_is_linking(head_aspect)) { /* leverage on its b.r.r gen code */ |
---|
670 | tmp= generate_pl_tail_string(ctxt,head_aspect,tail_string); |
---|
671 | } else { |
---|
672 | /* generate head's role or oset string */ |
---|
673 | char *head_string=generate_pl_head_string(head_aspect); |
---|
674 | if(head_string == NULL) |
---|
675 | goto error; |
---|
676 | |
---|
677 | /* tail side */ |
---|
678 | tmp=_build_constraint_rule_clause(ctxt,head_string, tail_string); |
---|
679 | if(tmp==NULL) goto error; |
---|
680 | if(head_string) free(head_string); |
---|
681 | } |
---|
682 | |
---|
683 | error: |
---|
684 | if(head_string) free(head_string); |
---|
685 | return tmp; |
---|
686 | } |
---|
687 | |
---|
688 | /* integer(X)<10 */ |
---|
689 | /* X='abc' */ |
---|
690 | char *generate_pl_range_constraint(char *typestr,char *var,char *val,char *op) |
---|
691 | { |
---|
692 | char *tmp=NULL; |
---|
693 | if(typestr) |
---|
694 | asprintf(&tmp,"%s(%s)%s%s",typestr,var,op,val); |
---|
695 | else |
---|
696 | asprintf(&tmp,"%s%s%s",var,op,val); |
---|
697 | return tmp; |
---|
698 | } |
---|
699 | |
---|
700 | /* compare(op,var,val) */ |
---|
701 | char *generate_pl_range_time_constraint(char *var,char *val,char *op) |
---|
702 | { |
---|
703 | char *tmp=NULL; |
---|
704 | asprintf(&tmp,"compare(%s,%s,%s)",op,var,val); |
---|
705 | return tmp; |
---|
706 | } |
---|
707 | |
---|
708 | /* generate the prolog isType rule clause for the type, |
---|
709 | isType(namespace,Acme, keyid); */ |
---|
710 | char *generate_pl_type_clause(abac_context_t *ctxt,char *principalname, int type) |
---|
711 | { |
---|
712 | char *tmp=NULL; |
---|
713 | char *typeid= abac_idtype_string(type); |
---|
714 | if(typeid==NULL || strcmp(typeid,"NULL")==0) |
---|
715 | panic("generate_pl_type_clause: can not have null typeid"); |
---|
716 | if(debug) |
---|
717 | fprintf(stderr,"generate type clause, (%s)\n", principalname); |
---|
718 | int cnt=asprintf(&tmp,"isType(%s,%s,%s)", |
---|
719 | abac_context_namespace(ctxt),principalname, typeid); |
---|
720 | return tmp; |
---|
721 | } |
---|
722 | |
---|