[718ad924] | 1 | |
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| 2 | /***********************************************************************/ |
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[d037f54] | 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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[718ad924] | 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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[2e9455f] | 14 | #include "abac_pl_gen.h" |
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[8bd77b5] | 15 | #include "abac_internal.h" |
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[2e9455f] | 16 | #include "abac_list.h" |
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[718ad924] | 17 | #include "abac_util.h" |
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[2e9455f] | 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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[718ad924] | 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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[7727f26] | 28 | static int debug=0; |
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[d037f54] | 29 | int ABAC_IN_PROLOG=0; |
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[7727f26] | 30 | |
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[440ba20] | 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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[9335cfa] | 39 | |
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[2e9455f] | 40 | static int gg_using_this=0; |
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| 41 | char* yyfptr_encode=NULL; |
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[d037f54] | 42 | |
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[440ba20] | 43 | |
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[2e9455f] | 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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[9b43fc3] | 51 | { |
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[2e9455f] | 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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[9b43fc3] | 70 | } |
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| 71 | |
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[718ad924] | 72 | /***********************************************************************/ |
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[2e9455f] | 73 | static void _set_yyfptr_encode(char *string) |
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[d037f54] | 74 | { |
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[2e9455f] | 75 | yyfptr_encode=abac_xstrdup(string); |
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[d037f54] | 76 | } |
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| 77 | |
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[2e9455f] | 78 | /***********************************************************************/ |
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[9335cfa] | 79 | static char* isX() |
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| 80 | { |
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[2e9455f] | 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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[9335cfa] | 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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[718ad924] | 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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[da5afdf] | 98 | int i=cred_count; |
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[718ad924] | 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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[440ba20] | 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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[2e9455f] | 192 | char *abac_pl_string_id_certs(abac_context_t *ctxt) |
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[440ba20] | 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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[2e9455f] | 198 | if(tmp==NULL) { |
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| 199 | tmp=generate_pl_type_clause(ctxt,cur->principalname,cur->type); |
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[440ba20] | 200 | } else { |
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[2e9455f] | 201 | asprintf(&tmp,"%s,%s", tmp, |
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| 202 | generate_pl_type_clause(ctxt,cur->principalname,cur->type)); |
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[440ba20] | 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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[b92a620] | 215 | fprintf(stderr,"add_id_certs: adding --> (%s)\n", principalname); |
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[440ba20] | 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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[7b548fa] | 240 | /***********************************************************************/ |
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[8bd77b5] | 241 | /* generate role(p_name, r_name, param..) */ |
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| 242 | /* or oset(p_name, r_name, param..) */ |
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[2e9455f] | 243 | /* mainly for aspect that is if A.R <- B format */ |
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[8bd77b5] | 244 | static char* generate_pl_head_string(abac_aspect_t *ptr) |
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[718ad924] | 245 | { |
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| 246 | char *tmp=NULL; |
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[d037f54] | 247 | char *principalname; |
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| 248 | PROLOG(principalname=abac_aspect_principal_name(ptr);); |
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[8bd77b5] | 249 | char *aspectname=abac_aspect_aspect_name(ptr); |
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| 250 | char *typestring=abac_aspect_type_string(ptr); |
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[718ad924] | 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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[8bd77b5] | 255 | abac_param_list_t *aspect_params=abac_aspect_aspect_params(ptr); |
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| 256 | if(aspect_params) { |
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[d037f54] | 257 | PROLOG(param_string=abac_param_list_string(aspect_params);); |
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[718ad924] | 258 | } |
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| 259 | |
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| 260 | if (param_string != NULL) { |
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[8bd77b5] | 261 | cnt=asprintf(&tmp,"%s(%s,%s,%s)", |
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| 262 | typestring, principalname, aspectname, param_string); |
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[718ad924] | 263 | free(param_string); |
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| 264 | } else { |
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[8bd77b5] | 265 | cnt=asprintf(&tmp,"%s(%s,%s)", |
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| 266 | typestring, principalname, aspectname); |
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[718ad924] | 267 | } |
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[7727f26] | 268 | |
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[b92a620] | 269 | if(debug && tmp) fprintf(stderr,"generate_pl_head_string: (%s)\n",tmp); |
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[718ad924] | 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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[8bd77b5] | 277 | /* generate oset(p_name, r_name, param..) with isMember call ?? */ |
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[2e9455f] | 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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[718ad924] | 280 | { |
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[da5afdf] | 281 | char *tmp=NULL; |
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[2e9455f] | 282 | char *namespace=abac_context_namespace(ctxt); |
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[da5afdf] | 283 | |
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[8bd77b5] | 284 | /* for oset case, |
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[da5afdf] | 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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[8bd77b5] | 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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[da5afdf] | 293 | tmp=abac_xstrdup(objectname); |
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| 294 | return tmp; |
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| 295 | } else { |
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[d037f54] | 296 | char *principalname; |
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| 297 | PROLOG(principalname=abac_aspect_principal_name(ptr);); |
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[8bd77b5] | 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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[da5afdf] | 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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[8bd77b5] | 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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[d037f54] | 308 | PROLOG(param_string=abac_param_list_string(aspect_params);); |
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[da5afdf] | 309 | } |
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[8bd77b5] | 310 | |
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| 311 | abac_param_list_t *linked_role_params=abac_aspect_linked_role_params(ptr); |
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[da5afdf] | 312 | if(linked_role_params) { |
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[d037f54] | 313 | PROLOG(linked_param_string=abac_param_list_string(linked_role_params);); |
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[da5afdf] | 314 | } |
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[8bd77b5] | 315 | |
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[da5afdf] | 316 | /* b.r.r */ |
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[8bd77b5] | 317 | if(linkedname!=NULL && aspectname!=NULL && principalname!=NULL ) { |
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[da5afdf] | 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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[2e9455f] | 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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[da5afdf] | 325 | free(param_string); |
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| 326 | } else { |
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[2e9455f] | 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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[da5afdf] | 330 | } |
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| 331 | free(linked_param_string); |
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| 332 | } else { |
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[8bd77b5] | 333 | if (aspect_params != NULL) { |
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[2e9455f] | 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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[da5afdf] | 337 | free(param_string); |
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| 338 | } else { |
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[2e9455f] | 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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[da5afdf] | 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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[8bd77b5] | 350 | if(linkedname==NULL && aspectname!=NULL && principalname!=NULL ) { |
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[da5afdf] | 351 | int fst=_get_next_cred_idx(); |
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| 352 | if(param_string != NULL) { |
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[2e9455f] | 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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[8bd77b5] | 355 | principalname, aspectname, param_string, fst); |
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[da5afdf] | 356 | free(param_string); |
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| 357 | } else { |
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[2e9455f] | 358 | cnt=asprintf(&tmp,"isMember(%s,%s,%s(%s,%s),C%d)", |
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| 359 | namespace,varX, typestring, |
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[8bd77b5] | 360 | principalname, aspectname, fst); |
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[da5afdf] | 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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[8bd77b5] | 368 | if(linkedname==NULL && aspectname==NULL && principalname!=NULL ) { |
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[da5afdf] | 369 | tmp=abac_xstrdup(principalname); |
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| 370 | return tmp; |
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| 371 | } |
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[8bd77b5] | 372 | |
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| 373 | return tmp; |
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| 374 | } |
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[da5afdf] | 375 | return tmp; |
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| 376 | } |
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[8bd77b5] | 377 | |
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[da5afdf] | 378 | |
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| 379 | /********************************************************************************/ |
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| 380 | |
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[2e9455f] | 381 | static char *_build_constraint_rule_clause(abac_context_t *ctxt,char *head_string, char *tail_string) |
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[da5afdf] | 382 | { |
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[2e9455f] | 383 | /*for A.R <- B */ |
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[440ba20] | 384 | if(debug) |
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[b92a620] | 385 | fprintf(stderr,"calling _build_constraint_rule_clause (%s)(%s)\n", head_string, tail_string); |
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[da5afdf] | 386 | char *tmp; |
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| 387 | int idx=_get_next_cred_idx(); |
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[2e9455f] | 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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[da5afdf] | 390 | return tmp; |
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| 391 | } |
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| 392 | |
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[2e9455f] | 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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[718ad924] | 395 | { |
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| 396 | char *tmp=NULL; |
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[2e9455f] | 397 | char *namespace=abac_context_namespace(ctxt); |
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[718ad924] | 398 | |
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[8bd77b5] | 399 | if(aspectname == NULL) { |
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[718ad924] | 400 | /* A.R <- B */ |
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[d5bbd3e] | 401 | if(id_string == NULL && constraint_string == NULL) { |
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[2e9455f] | 402 | asprintf(&tmp, "isMember(%s,%s,%s,['%s'])", |
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| 403 | namespace, tail_string,head_string,yyfptr_encode); |
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[da5afdf] | 404 | } else { |
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[d5bbd3e] | 405 | if(id_string == NULL) { |
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[2e9455f] | 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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[d5bbd3e] | 408 | constraint_string); |
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| 409 | } else if(constraint_string == NULL) { |
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[2e9455f] | 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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[d5bbd3e] | 412 | id_string); |
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[2e9455f] | 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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[d5bbd3e] | 415 | id_string, constraint_string); |
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| 416 | } |
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[718ad924] | 417 | } |
---|
| 418 | } else { |
---|
| 419 | /* A.R <- B.R */ |
---|
| 420 | /* A.R <- B.R.R */ |
---|
| 421 | if (cred_count==0) { |
---|
[d5bbd3e] | 422 | if(id_string == NULL && constraint_string == NULL) { |
---|
[2e9455f] | 423 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s", |
---|
| 424 | namespace,varX, |
---|
| 425 | head_string, yyfptr_encode, tail_string); |
---|
[718ad924] | 426 | } else { |
---|
[d5bbd3e] | 427 | if(id_string == NULL) { |
---|
[2e9455f] | 428 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s", |
---|
| 429 | namespace,varX, |
---|
| 430 | head_string, yyfptr_encode, tail_string, |
---|
[d5bbd3e] | 431 | constraint_string); |
---|
| 432 | } else if(constraint_string == NULL) { |
---|
[2e9455f] | 433 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s", |
---|
| 434 | namespace,varX, |
---|
| 435 | head_string, yyfptr_encode, id_string, |
---|
[d5bbd3e] | 436 | tail_string); |
---|
| 437 | } else { |
---|
[2e9455f] | 438 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s,%s,%s", |
---|
| 439 | namespace,varX, |
---|
| 440 | head_string, yyfptr_encode, id_string, |
---|
[d5bbd3e] | 441 | tail_string, constraint_string); |
---|
| 442 | } |
---|
[718ad924] | 443 | } |
---|
| 444 | } else { |
---|
| 445 | char *tmp_cred_list=_compose_cred_list(); |
---|
[d5bbd3e] | 446 | if(id_string == NULL && constraint_string == NULL) { |
---|
[2e9455f] | 447 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, appendL([['%s'],%s],L)", |
---|
| 448 | namespace,varX, |
---|
[da5afdf] | 449 | head_string, tail_string, |
---|
[2e9455f] | 450 | yyfptr_encode, tmp_cred_list); |
---|
[718ad924] | 451 | } else { |
---|
[d5bbd3e] | 452 | if(id_string == NULL) { |
---|
[2e9455f] | 453 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
| 454 | namespace,varX, |
---|
[d5bbd3e] | 455 | head_string, tail_string, constraint_string, |
---|
[2e9455f] | 456 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 457 | } else if(constraint_string == NULL) { |
---|
[2e9455f] | 458 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
| 459 | namespace,varX, |
---|
[d5bbd3e] | 460 | head_string, id_string, tail_string, |
---|
[2e9455f] | 461 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 462 | } else { |
---|
[2e9455f] | 463 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, %s, appendL([['%s'],%s],L)", |
---|
| 464 | namespace,varX, |
---|
[d5bbd3e] | 465 | head_string, id_string, tail_string, |
---|
| 466 | constraint_string, |
---|
[2e9455f] | 467 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 468 | } |
---|
[718ad924] | 469 | } |
---|
| 470 | free(tmp_cred_list); |
---|
| 471 | cred_count=0; |
---|
| 472 | } |
---|
| 473 | } |
---|
[da5afdf] | 474 | return tmp; |
---|
| 475 | } |
---|
| 476 | |
---|
| 477 | |
---|
[2e9455f] | 478 | static char *generate_pl_rule_clause(abac_context_t *ctxt,char *head_rule_string, |
---|
| 479 | abac_aspect_t *tail_rule, char *id_string, char *constraint_string, char* varX) |
---|
[da5afdf] | 480 | { |
---|
[8bd77b5] | 481 | char *aspectname=abac_aspect_aspect_name(tail_rule); |
---|
[2e9455f] | 482 | char *tail_rule_string=generate_pl_tail_string(ctxt,tail_rule,varX); |
---|
[8bd77b5] | 483 | if(aspectname == NULL && tail_rule_string == NULL) |
---|
[da5afdf] | 484 | goto error; |
---|
[2e9455f] | 485 | char *tmp=_build_rule_clause(ctxt,aspectname, |
---|
| 486 | head_rule_string, tail_rule_string, id_string, constraint_string, varX); |
---|
[8bd77b5] | 487 | if(tail_rule_string) free(tail_rule_string); |
---|
[da5afdf] | 488 | return tmp; |
---|
| 489 | |
---|
| 490 | error: |
---|
[8bd77b5] | 491 | if(tail_rule_string) free(tail_rule_string); |
---|
[da5afdf] | 492 | return NULL; |
---|
| 493 | } |
---|
| 494 | |
---|
[718ad924] | 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 | |
---|
[2e9455f] | 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) |
---|
[da5afdf] | 513 | { |
---|
| 514 | char *tmp; |
---|
[2e9455f] | 515 | char *namespace=abac_context_namespace(ctxt); |
---|
[da5afdf] | 516 | |
---|
| 517 | if (cred_count==0) { |
---|
[d5bbd3e] | 518 | if(id_string == NULL && constraint_string == NULL) { |
---|
[2e9455f] | 519 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s", |
---|
| 520 | namespace,varX, |
---|
| 521 | head_role_string, yyfptr_encode, tail_role_string); |
---|
[da5afdf] | 522 | } else { |
---|
[d5bbd3e] | 523 | if(id_string == NULL) { |
---|
[2e9455f] | 524 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s", |
---|
| 525 | namespace,varX, |
---|
| 526 | head_role_string, yyfptr_encode, |
---|
[d5bbd3e] | 527 | tail_role_string, constraint_string); |
---|
| 528 | } else if(constraint_string == NULL) { |
---|
[2e9455f] | 529 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s", |
---|
| 530 | namespace,varX, |
---|
| 531 | head_role_string, yyfptr_encode, |
---|
[d5bbd3e] | 532 | id_string, tail_role_string); |
---|
| 533 | } else { |
---|
[2e9455f] | 534 | asprintf(&tmp,"isMember(%s,%s,%s,['%s']):-%s, %s, %s", |
---|
| 535 | namespace,varX, |
---|
| 536 | head_role_string, yyfptr_encode, |
---|
[d5bbd3e] | 537 | id_string, tail_role_string, constraint_string); |
---|
| 538 | } |
---|
[da5afdf] | 539 | } |
---|
| 540 | } else { |
---|
| 541 | char *tmp_cred_list=_compose_cred_list(); |
---|
[d5bbd3e] | 542 | if(id_string == NULL && constraint_string == NULL) { |
---|
[2e9455f] | 543 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, appendL([['%s'],%s],L)", |
---|
| 544 | namespace,varX, |
---|
[da5afdf] | 545 | head_role_string, tail_role_string, |
---|
[2e9455f] | 546 | yyfptr_encode, tmp_cred_list); |
---|
[da5afdf] | 547 | } else { |
---|
[d5bbd3e] | 548 | if(id_string == NULL) { |
---|
[2e9455f] | 549 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
| 550 | namespace,varX, |
---|
[d5bbd3e] | 551 | head_role_string, tail_role_string, constraint_string, |
---|
[2e9455f] | 552 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 553 | } else if(constraint_string == NULL) { |
---|
[2e9455f] | 554 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, appendL([['%s'],%s],L)", |
---|
| 555 | namespace,varX, |
---|
[d5bbd3e] | 556 | head_role_string, id_string, tail_role_string, |
---|
[2e9455f] | 557 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 558 | } else { |
---|
[2e9455f] | 559 | asprintf(&tmp,"isMember(%s,%s,%s,L):-%s, %s, %s, appendL([['%s'],%s],L)", |
---|
| 560 | namespace,varX, |
---|
[d5bbd3e] | 561 | head_role_string, id_string, tail_role_string, constraint_string, |
---|
[2e9455f] | 562 | yyfptr_encode, tmp_cred_list); |
---|
[d5bbd3e] | 563 | } |
---|
[da5afdf] | 564 | } |
---|
| 565 | free(tmp_cred_list); |
---|
| 566 | cred_count=0; |
---|
| 567 | } |
---|
| 568 | return tmp; |
---|
| 569 | } |
---|
| 570 | |
---|
[2e9455f] | 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) |
---|
[718ad924] | 574 | { |
---|
| 575 | char *tmp=NULL; |
---|
| 576 | char* tail_role_string=NULL; |
---|
[8bd77b5] | 577 | abac_list_t *list=abac_aspect_prereqs(tail_role); |
---|
[718ad924] | 578 | /* A.R <- B.R & C.R.R */ |
---|
[8bd77b5] | 579 | /* A.O <- B.O & C.R.O */ |
---|
[718ad924] | 580 | |
---|
| 581 | if (list != NULL) { |
---|
[8bd77b5] | 582 | abac_aspect_t *cur; |
---|
[718ad924] | 583 | abac_list_foreach(list, cur, |
---|
[2e9455f] | 584 | char *ntmp=generate_pl_tail_string(ctxt,cur,varX); |
---|
[b92a620] | 585 | if(debug) fprintf(stderr," intersecting tail: (%s)\n",ntmp); |
---|
[8bd77b5] | 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 | } |
---|
[718ad924] | 594 | free(ntmp); |
---|
| 595 | ); |
---|
| 596 | } |
---|
| 597 | |
---|
[b92a620] | 598 | if(debug) fprintf(stderr," final intersecting tail: (%s)\n",tail_role_string); |
---|
[2e9455f] | 599 | tmp=_build_intersecting_clause(ctxt,head_role_string, tail_role_string, |
---|
| 600 | id_string,constraint_string, varX); |
---|
[718ad924] | 601 | if(tail_role_string) free(tail_role_string); |
---|
| 602 | return tmp; |
---|
| 603 | } |
---|
| 604 | |
---|
[2e9455f] | 605 | /**** THIS NEEDS TO BE LOCKED *****/ |
---|
| 606 | /* XXXX */ |
---|
[abf8d5d] | 607 | /* generate the prolog isMember rule clause for the credential stmt */ |
---|
[2e9455f] | 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) |
---|
[718ad924] | 610 | { |
---|
| 611 | char *tmp=NULL; |
---|
[d5bbd3e] | 612 | char *id_clauses_string=NULL; |
---|
| 613 | char *constraint_clauses_string=NULL; |
---|
[718ad924] | 614 | abac_list_t *clauses=abac_list_new(); |
---|
[2e9455f] | 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 | |
---|
[440ba20] | 625 | int cnt=abac_pl_cnt_id_certs(); |
---|
[718ad924] | 626 | if(cnt > 0) { /* string it up */ |
---|
[2e9455f] | 627 | id_clauses_string=abac_pl_string_id_certs(ctxt); |
---|
[440ba20] | 628 | abac_pl_free_id_certs(); |
---|
[718ad924] | 629 | } |
---|
| 630 | |
---|
[8bd77b5] | 631 | /* make a loop here */ |
---|
[440ba20] | 632 | cnt=abac_pl_cnt_constraints(); |
---|
[da5afdf] | 633 | if(cnt > 0) { |
---|
[440ba20] | 634 | constraint_clauses_string=abac_pl_string_constraints(); |
---|
| 635 | abac_pl_free_constraints(); |
---|
[da5afdf] | 636 | } |
---|
| 637 | |
---|
[8bd77b5] | 638 | /* generate head's string */ |
---|
| 639 | char *head_string=generate_pl_head_string(head_aspect); |
---|
| 640 | if(head_string == NULL) |
---|
[718ad924] | 641 | goto error; |
---|
| 642 | |
---|
| 643 | /* tail side */ |
---|
[8bd77b5] | 644 | if(abac_aspect_is_intersection(tail_aspect)) { |
---|
[2e9455f] | 645 | tmp=generate_pl_intersecting_clause(ctxt,head_string, tail_aspect, |
---|
| 646 | id_clauses_string, constraint_clauses_string, isX()); |
---|
[718ad924] | 647 | } else { |
---|
[2e9455f] | 648 | tmp=generate_pl_rule_clause(ctxt,head_string, tail_aspect, |
---|
| 649 | id_clauses_string, constraint_clauses_string, isX()); |
---|
[718ad924] | 650 | } |
---|
| 651 | if(tmp==NULL) |
---|
| 652 | goto error; |
---|
[da5afdf] | 653 | |
---|
[718ad924] | 654 | abac_list_add(clauses,tmp); |
---|
| 655 | return clauses; |
---|
| 656 | |
---|
| 657 | error: |
---|
[8bd77b5] | 658 | if(head_string) free(head_string); |
---|
[d5bbd3e] | 659 | if(id_clauses_string) free(id_clauses_string); |
---|
| 660 | if(constraint_clauses_string) free(constraint_clauses_string); |
---|
[da5afdf] | 661 | return clauses; |
---|
| 662 | } |
---|
| 663 | |
---|
[2e9455f] | 664 | char *generate_pl_constraint_clause(abac_context_t *ctxt,abac_aspect_t *head_aspect, char *tail_string) |
---|
[da5afdf] | 665 | { |
---|
[2e9455f] | 666 | char *tmp=NULL; |
---|
| 667 | char *head_string=NULL; |
---|
[da5afdf] | 668 | |
---|
[2e9455f] | 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 | } |
---|
[da5afdf] | 682 | |
---|
| 683 | error: |
---|
[8bd77b5] | 684 | if(head_string) free(head_string); |
---|
[2e9455f] | 685 | return tmp; |
---|
[da5afdf] | 686 | } |
---|
| 687 | |
---|
[d5bbd3e] | 688 | /* integer(X)<10 */ |
---|
| 689 | /* X='abc' */ |
---|
| 690 | char *generate_pl_range_constraint(char *typestr,char *var,char *val,char *op) |
---|
[da5afdf] | 691 | { |
---|
| 692 | char *tmp=NULL; |
---|
[d5bbd3e] | 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); |
---|
[da5afdf] | 697 | return tmp; |
---|
| 698 | } |
---|
| 699 | |
---|
[7b548fa] | 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 | |
---|
[abf8d5d] | 708 | /* generate the prolog isType rule clause for the type, |
---|
[2e9455f] | 709 | isType(namespace,Acme, keyid); */ |
---|
| 710 | char *generate_pl_type_clause(abac_context_t *ctxt,char *principalname, int type) |
---|
[718ad924] | 711 | { |
---|
| 712 | char *tmp=NULL; |
---|
[8bd77b5] | 713 | char *typeid= abac_idtype_string(type); |
---|
[7b548fa] | 714 | if(typeid==NULL || strcmp(typeid,"NULL")==0) |
---|
[d5bbd3e] | 715 | panic("generate_pl_type_clause: can not have null typeid"); |
---|
[440ba20] | 716 | if(debug) |
---|
[b92a620] | 717 | fprintf(stderr,"generate type clause, (%s)\n", principalname); |
---|
[2e9455f] | 718 | int cnt=asprintf(&tmp,"isType(%s,%s,%s)", |
---|
| 719 | abac_context_namespace(ctxt),principalname, typeid); |
---|
[718ad924] | 720 | return tmp; |
---|
| 721 | } |
---|
| 722 | |
---|