[8bd77b5] | 1 | |
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| 2 | /*********************************************************** |
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| 3 | abac_term.c |
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| 4 | |
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| 5 | dterm=data term of rt1 |
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| 6 | term is a kind of dterm |
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| 7 | ***********************************************************/ |
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| 8 | #include <assert.h> |
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| 9 | #include <stdlib.h> |
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| 10 | #include <stdio.h> |
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| 11 | #include <string.h> |
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| 12 | #include <ctype.h> |
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| 13 | #include <time.h> |
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| 14 | |
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| 15 | #include "abac_internal.h" |
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| 16 | #include "abac_util.h" |
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| 17 | |
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| 18 | static int debug=0; |
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| 19 | |
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| 20 | /* string will contain either |
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| 21 | the range literal (static constraint) |
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| 22 | or |
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| 23 | the oset/role prologized string (dynamic constraint) |
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| 24 | union ptr will only be set if it is a dynamic |
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| 25 | constraint */ |
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| 26 | struct _abac_condition_t { |
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| 27 | int type; |
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| 28 | char *string; |
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| 29 | abac_aspect_t *of_aspect; |
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| 30 | }; |
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| 31 | |
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| 32 | struct _abac_term_t { |
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| 33 | int type; |
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| 34 | char *name; |
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| 35 | char *cn; |
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| 36 | abac_condition_t *constraint; |
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| 37 | }; |
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| 38 | |
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| 39 | /* new, free, add one of terms */ |
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| 40 | struct _abac_param_list_t { |
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| 41 | abac_list_t *list; |
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| 42 | }; |
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| 43 | |
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| 44 | |
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| 45 | /******************************************************************/ |
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| 46 | char *abac_condtype_name(int i) |
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| 47 | { |
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| 48 | if(i>_condname_cnt) |
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| 49 | panic("abac_condtype_name: went out of range on condname"); |
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| 50 | return _condname[i]; |
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| 51 | } |
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| 52 | |
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| 53 | abac_condition_t *abac_condition_new(int type,char* condstr,abac_aspect_t *cptr) |
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| 54 | { |
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| 55 | if(debug) { |
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| 56 | printf(" abac_condition_new: \n"); |
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| 57 | printf(" type is %d(%s)\n", type, abac_condtype_name(type)); |
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| 58 | printf(" condstr is (%s)\n", condstr); |
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| 59 | if(cptr) printf(" yes on cptr\n"); |
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| 60 | else printf(" no on cptr\n"); |
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| 61 | } |
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| 62 | abac_condition_t *ptr= |
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| 63 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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| 64 | ptr->type=type; |
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| 65 | ptr->string=abac_xstrdup(condstr); |
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| 66 | if(cptr) ptr->of_aspect=abac_aspect_dup(cptr); |
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| 67 | else ptr->of_aspect=NULL; |
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| 68 | return ptr; |
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| 69 | } |
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| 70 | |
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| 71 | void abac_condition_free(abac_condition_t *ptr) |
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| 72 | { |
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| 73 | switch(ptr->type) { |
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| 74 | case e_COND_OSET: |
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| 75 | case e_COND_ROLE: |
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| 76 | abac_aspect_free(ptr->of_aspect); |
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| 77 | break; |
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| 78 | case e_COND_RANGE: |
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| 79 | /* do nothing */ |
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| 80 | break; |
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| 81 | } |
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| 82 | if(ptr->string) free(ptr->string); |
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| 83 | free(ptr); |
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| 84 | } |
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| 85 | |
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| 86 | abac_condition_t *abac_condition_from_string(char *string) |
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| 87 | { |
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| 88 | assert(string); |
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| 89 | abac_condition_t *nptr= |
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| 90 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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| 91 | nptr->type=e_COND_RANGE; |
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| 92 | nptr->string=abac_xstrdup(string); |
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| 93 | nptr->of_aspect=NULL; |
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| 94 | return nptr; |
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| 95 | } |
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| 96 | |
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| 97 | abac_condition_t *abac_condition_from_aspect(abac_aspect_t *ptr) |
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| 98 | { |
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| 99 | assert(ptr); |
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| 100 | abac_condition_t *nptr= |
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| 101 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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| 102 | if(abac_aspect_is_role(ptr)) |
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| 103 | nptr->type=e_COND_ROLE; |
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| 104 | else nptr->type=e_COND_OSET; |
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| 105 | nptr->string=NULL; |
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| 106 | nptr->of_aspect=abac_aspect_dup(ptr); |
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| 107 | return nptr; |
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| 108 | } |
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| 109 | |
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| 110 | /* made a copy */ |
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| 111 | abac_condition_t *abac_condition_dup(abac_condition_t *ptr) |
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| 112 | { |
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| 113 | abac_condition_t *nptr= |
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| 114 | (abac_condition_t *)abac_xmalloc(sizeof(abac_condition_t)); |
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| 115 | nptr->type=ptr->type; |
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| 116 | if(ptr->string) |
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| 117 | nptr->string=abac_xstrdup(ptr->string); |
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| 118 | else nptr->string=NULL; |
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| 119 | if(ptr->of_aspect) |
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| 120 | nptr->of_aspect=abac_aspect_dup(ptr->of_aspect); |
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| 121 | else nptr->of_aspect=NULL; |
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| 122 | return nptr; |
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| 123 | } |
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| 124 | |
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| 125 | char *abac_condition_string(abac_condition_t *ptr) |
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| 126 | { |
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| 127 | char *string=NULL; |
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| 128 | switch(ptr->type) { |
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| 129 | case e_COND_OSET: |
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| 130 | case e_COND_ROLE: |
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| 131 | string=abac_aspect_string_with_condition(ptr->of_aspect); |
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| 132 | break; |
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| 133 | case e_COND_RANGE: |
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| 134 | string=abac_xstrdup(ptr->string); |
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| 135 | break; |
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| 136 | } |
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| 137 | return string; |
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| 138 | } |
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| 139 | |
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| 140 | char *abac_condition_typed_string(abac_condition_t *ptr) |
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| 141 | { |
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| 142 | char *string=NULL; |
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| 143 | switch(ptr->type) { |
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| 144 | case e_COND_OSET: |
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| 145 | case e_COND_ROLE: |
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| 146 | string=abac_aspect_typed_string_with_condition(ptr->of_aspect); |
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| 147 | break; |
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| 148 | case e_COND_RANGE: |
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| 149 | string=abac_xstrdup(ptr->string); |
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| 150 | break; |
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| 151 | } |
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| 152 | return string; |
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| 153 | } |
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| 154 | |
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| 155 | /******************************************************************/ |
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| 156 | |
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| 157 | char *abac_term_name(abac_term_t *term) |
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| 158 | { |
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| 159 | return term->name; |
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| 160 | } |
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| 161 | |
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| 162 | char *abac_term_cn(abac_term_t *term) |
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| 163 | { |
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| 164 | return term->cn; |
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| 165 | } |
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| 166 | |
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| 167 | abac_condition_t *abac_term_constraint(abac_term_t *term) |
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| 168 | { |
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| 169 | return term->constraint; |
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| 170 | } |
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| 171 | |
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| 172 | char *abac_termtype_name(int i) |
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| 173 | { |
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| 174 | if(i>_termname_cnt) |
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| 175 | panic("abac_termtype_name: went out of range on termname"); |
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| 176 | return _termname[i]; |
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| 177 | } |
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| 178 | |
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| 179 | char *abac_term_type_name(abac_term_t *term) |
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| 180 | { |
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| 181 | return abac_termtype_name(term->type); |
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| 182 | } |
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| 183 | |
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| 184 | int abac_term_type(abac_term_t *term) |
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| 185 | { |
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| 186 | return term->type; |
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| 187 | } |
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| 188 | |
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| 189 | static bool _abac_termtype_is_time_type(int i) |
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| 190 | { |
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| 191 | if (i == e_TERM_TIME) |
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| 192 | return 1; |
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| 193 | return 0; |
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| 194 | } |
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| 195 | |
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| 196 | bool abac_term_is_time_type(abac_term_t *term) |
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| 197 | { |
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| 198 | return _abac_termtype_is_time_type(term->type); |
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| 199 | } |
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| 200 | |
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| 201 | static bool _abac_termtype_is_string_type(int i) |
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| 202 | { |
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| 203 | if (i == e_TERM_STRING) |
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| 204 | return 1; |
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| 205 | return 0; |
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| 206 | } |
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| 207 | |
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| 208 | bool abac_term_is_string_type(abac_term_t *term) |
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| 209 | { |
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| 210 | return _abac_termtype_is_string_type(term->type); |
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| 211 | } |
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| 212 | |
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| 213 | static bool _abac_termtype_is_integer_type(int i) |
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| 214 | { |
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| 215 | if (i == e_TERM_INTEGER) |
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| 216 | return 1; |
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| 217 | return 0; |
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| 218 | } |
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| 219 | |
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| 220 | bool abac_term_is_integer_type(abac_term_t *term) |
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| 221 | { |
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| 222 | return _abac_termtype_is_integer_type(term->type); |
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| 223 | } |
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| 224 | |
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| 225 | static bool _abac_termtype_is_urn_type(int i) |
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| 226 | { |
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| 227 | if (i == e_TERM_URN) |
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| 228 | return 1; |
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| 229 | return 0; |
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| 230 | } |
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| 231 | |
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| 232 | bool abac_term_is_urn_type(abac_term_t *term) |
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| 233 | { |
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| 234 | return _abac_termtype_is_urn_type(term->type); |
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| 235 | } |
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| 236 | |
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| 237 | int abac_term_verify_term_type(char *type) { |
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| 238 | int i; |
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| 239 | |
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| 240 | if (type == NULL) |
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| 241 | return 0; |
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| 242 | |
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| 243 | for (i = 1; i <= _termname_cnt ; i++) |
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| 244 | if(strcmp(type,_termname[i])==0) |
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| 245 | return i; |
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| 246 | return 0; |
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| 247 | } |
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| 248 | |
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| 249 | char *abac_term_to_time(char *string) |
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| 250 | { |
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| 251 | struct tm tm1; |
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| 252 | char buf[255]; |
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| 253 | |
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| 254 | strptime(string, "%Y%m%dT%H%M%S", &tm1); |
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| 255 | strftime(buf, sizeof(buf), "time(%Y,%m,%d,%H,%M,%S)", &tm1); |
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| 256 | return strdup(buf); |
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| 257 | } |
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| 258 | |
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| 259 | /* called from yy */ |
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| 260 | abac_term_t *abac_term_new(int type, char *name, char *cond, abac_aspect_t *cptr) |
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| 261 | { |
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| 262 | if(debug) { |
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| 263 | printf("abac_term_new: \n"); |
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| 264 | printf(" type is %d(%s)\n", type, abac_termtype_name(type)); |
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| 265 | printf(" name is (%s)\n", name); |
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| 266 | if(cond) |
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| 267 | printf(" cond is %s\n", cond); |
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| 268 | else printf(" no cond \n"); |
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| 269 | if(cptr) |
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| 270 | printf(" cptr is (%s)\n", abac_aspect_string_with_condition(cptr)); |
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| 271 | else printf(" there is no cptr\n"); |
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| 272 | } |
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| 273 | abac_condition_t *constraint=NULL; |
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| 274 | if (cond) { |
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| 275 | if(type==e_TERM_PRINCIPAL) { |
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| 276 | constraint=abac_condition_new(e_COND_ROLE,cond,cptr); |
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| 277 | } else { |
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| 278 | if(cptr == NULL) |
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| 279 | constraint=abac_condition_new(e_COND_RANGE,cond,NULL); |
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| 280 | else |
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| 281 | constraint=abac_condition_new(e_COND_OSET,cond,cptr); |
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| 282 | } |
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| 283 | } |
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| 284 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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| 285 | ptr->type=type; |
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| 286 | /* reformat the term name if it is a time type */ |
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| 287 | if((!constraint) && _abac_termtype_is_time_type(type) && isdigit(name[0])) { |
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| 288 | char *tmp=abac_term_to_time(name); |
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| 289 | ptr->name=tmp; |
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| 290 | } else { |
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| 291 | ptr->name=abac_xstrdup(name); |
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| 292 | } |
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| 293 | ptr->constraint=constraint; |
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| 294 | return ptr; |
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| 295 | } |
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| 296 | |
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| 297 | abac_term_t *abac_term_create(int type, char *name, abac_condition_t *cptr) |
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| 298 | { |
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| 299 | if(debug) { |
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| 300 | printf("abac_term_create: \n"); |
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| 301 | printf(" type is %d(%s)\n", type, abac_termtype_name(type)); |
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| 302 | printf(" name is (%s)\n", name); |
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| 303 | if(cptr) |
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| 304 | printf(" cptr is (%s)\n", abac_condition_typed_string(cptr)); |
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| 305 | else printf(" there is no cptr\n"); |
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| 306 | } |
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| 307 | |
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| 308 | abac_term_t *ptr=abac_xmalloc(sizeof(abac_term_t)); |
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| 309 | ptr->type=type; |
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| 310 | /* reformat the term name if it is a time type */ |
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| 311 | if((!cptr) && _abac_termtype_is_time_type(type) && isdigit(name[0])) { |
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| 312 | char *tmp=abac_term_to_time(name); |
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| 313 | ptr->name=tmp; |
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| 314 | } else { |
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| 315 | ptr->name=abac_xstrdup(name); |
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| 316 | } |
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| 317 | ptr->constraint=(cptr==NULL)?NULL:abac_condition_dup(cptr); |
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| 318 | return ptr; |
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| 319 | } |
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| 320 | |
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| 321 | abac_term_t *abac_term_dup(abac_term_t *ptr) |
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| 322 | { |
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| 323 | assert(ptr); |
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| 324 | abac_term_t *nptr=abac_xmalloc(sizeof(abac_term_t)); |
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| 325 | nptr->type=ptr->type; |
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| 326 | nptr->name=abac_xstrdup(ptr->name); |
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| 327 | if(ptr->constraint!=NULL) |
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| 328 | nptr->constraint=abac_condition_dup(ptr->constraint); |
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| 329 | else nptr->constraint=NULL; |
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| 330 | return nptr; |
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| 331 | } |
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| 332 | |
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| 333 | void abac_term_free(abac_term_t *ptr) |
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| 334 | { |
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| 335 | if(ptr->constraint) { |
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| 336 | abac_condition_free(ptr->constraint); |
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| 337 | } |
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| 338 | free(ptr->name); |
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| 339 | free(ptr); |
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| 340 | } |
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| 341 | |
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| 342 | abac_term_t *abac_term_add_constraint(abac_term_t *ptr, abac_condition_t *cond) |
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| 343 | { |
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| 344 | if(ptr->constraint) { |
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| 345 | abac_condition_free(ptr->constraint); |
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| 346 | } |
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| 347 | ptr->constraint = abac_condition_dup(cond); |
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| 348 | return ptr; |
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| 349 | } |
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| 350 | |
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| 351 | /* name or name:cond */ |
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| 352 | static char *abac_term_string_with_condition(abac_term_t *ptr) |
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| 353 | { |
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| 354 | char *tmp=NULL; |
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| 355 | char *cond=NULL; |
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| 356 | char *name=abac_term_name(ptr); |
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| 357 | if(ptr->constraint) { |
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| 358 | cond=abac_condition_string(ptr->constraint); |
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| 359 | } |
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| 360 | if(cond) { |
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| 361 | asprintf(&tmp,"%s:%s", name, cond); |
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| 362 | free(cond); |
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| 363 | } else tmp=abac_xstrdup(name); |
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| 364 | return tmp; |
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| 365 | } |
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| 366 | |
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| 367 | /* [type:name] or [typed:name:cond] */ |
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| 368 | static char *abac_term_typed_string_with_condition(abac_term_t *ptr) |
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| 369 | { |
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| 370 | char *tmp=NULL; |
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| 371 | char *cond=NULL; |
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| 372 | char *name=abac_term_name(ptr); |
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| 373 | char *type=abac_term_type_name(ptr); |
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| 374 | if(ptr->constraint) { |
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| 375 | cond=abac_condition_typed_string(ptr->constraint); |
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| 376 | } |
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| 377 | if(cond) { |
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| 378 | asprintf(&tmp,"[%s:%s:%s]", type, name, cond); |
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| 379 | free(cond); |
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| 380 | } else |
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| 381 | asprintf(&tmp,"[%s:%s]", type, name); |
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| 382 | if(debug) printf("abac_term_typed_string_with_condition: (%s)\n",tmp); |
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| 383 | return tmp; |
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| 384 | } |
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| 385 | |
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| 386 | /* len of name or name:cond */ |
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| 387 | static int abac_term_len_with_condition(abac_term_t *ptr) |
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| 388 | { |
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| 389 | char *cond=NULL; |
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| 390 | char *name=ptr->name; |
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| 391 | int len=strlen(name); |
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| 392 | if(ptr->constraint) { |
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| 393 | cond=abac_condition_string(ptr->constraint); |
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| 394 | len=len+strlen(cond)+1; |
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| 395 | free(cond); |
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| 396 | } |
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| 397 | return len; |
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| 398 | } |
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| 399 | |
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| 400 | /* just name */ |
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| 401 | char *abac_term_string(abac_term_t *ptr) |
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| 402 | { |
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| 403 | return abac_xstrdup(ptr->name); |
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| 404 | } |
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| 405 | |
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| 406 | /* just len of name */ |
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| 407 | static int abac_term_len(abac_term_t *ptr) |
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| 408 | { |
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| 409 | /* including the 2 's */ |
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| 410 | if(ptr->type == abac_term_verify_term_type("urn") || |
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| 411 | ptr->type == abac_term_verify_term_type("string") ) { |
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| 412 | return strlen(ptr->name)+2; |
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| 413 | } |
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| 414 | return strlen(ptr->name); |
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| 415 | } |
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| 416 | |
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| 417 | char *abac_term_typed_string(abac_term_t *ptr) |
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| 418 | { |
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| 419 | return abac_term_typed_string_with_condition(ptr); |
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| 420 | } |
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| 421 | |
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| 422 | /********************************************************************/ |
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| 423 | abac_param_list_t *abac_param_list_new(abac_term_t *term) |
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| 424 | { |
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| 425 | abac_param_list_t *ptr=abac_xmalloc(sizeof(abac_param_list_t)); |
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| 426 | ptr->list=abac_list_new(); |
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| 427 | abac_list_add(ptr->list, abac_term_dup(term)); |
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| 428 | return ptr; |
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| 429 | } |
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| 430 | |
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| 431 | abac_param_list_t *abac_param_list_free(abac_param_list_t *ptr) |
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| 432 | { |
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| 433 | abac_list_t *list=ptr->list; |
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| 434 | abac_term_t *cur; |
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| 435 | abac_list_foreach(list, cur, |
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| 436 | abac_term_free(cur); |
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| 437 | ); |
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| 438 | abac_list_free(list); |
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| 439 | free(ptr); |
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| 440 | } |
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| 441 | |
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| 442 | abac_param_list_t *abac_param_list_add_term(abac_param_list_t *ptr, abac_term_t *term) |
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| 443 | { |
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| 444 | abac_list_t *list=ptr->list; |
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| 445 | abac_list_add(list, abac_term_dup(term)); |
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| 446 | return ptr; |
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| 447 | } |
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| 448 | |
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| 449 | |
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| 450 | /* term1:cond1,term2:cond2 */ |
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| 451 | char* abac_param_list_string_with_condition(abac_param_list_t *ptr) |
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| 452 | { |
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| 453 | if(ptr->list == NULL) |
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| 454 | return ""; |
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| 455 | |
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| 456 | abac_term_t *cur; |
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| 457 | char *tmp=NULL, *final=NULL; |
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| 458 | abac_list_foreach(ptr->list, cur, |
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| 459 | char *s=abac_term_string_with_condition(cur); |
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| 460 | if(final==NULL) { |
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| 461 | final=abac_xstrdup(s); |
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| 462 | } else { |
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| 463 | tmp=final; |
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| 464 | final=NULL; |
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| 465 | asprintf(&final,"%s,%s",tmp,s); |
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| 466 | free(tmp); |
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| 467 | } |
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| 468 | free(s); |
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| 469 | ); |
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| 470 | return final; |
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| 471 | } |
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| 472 | |
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| 473 | /* [type:term1:cond1],[type:term2:cond2] */ |
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| 474 | char* abac_param_list_typed_string_with_condition(abac_param_list_t *ptr) |
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| 475 | { |
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| 476 | if(ptr->list == NULL) |
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| 477 | return ""; |
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| 478 | |
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| 479 | abac_term_t *cur; |
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| 480 | char *tmp=NULL, *final=NULL; |
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| 481 | abac_list_foreach(ptr->list, cur, |
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| 482 | char *s=abac_term_typed_string_with_condition(cur); |
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| 483 | if(final==NULL) { |
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| 484 | final=abac_xstrdup(s); |
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| 485 | } else { |
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| 486 | tmp=final; |
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| 487 | final=NULL; |
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| 488 | asprintf(&final,"%s,%s",tmp,s); |
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| 489 | if(debug) printf("typed param so far, %s\n", final); |
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| 490 | free(tmp); |
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| 491 | } |
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| 492 | free(s); |
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| 493 | ); |
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| 494 | if(debug) printf("typed param so far, %s\n", final); |
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| 495 | return final; |
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| 496 | } |
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| 497 | |
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| 498 | /* term1,term2 */ |
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| 499 | char* abac_param_list_string(abac_param_list_t *ptr) |
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| 500 | { |
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| 501 | abac_list_t *list=ptr->list; |
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| 502 | if(list == NULL) |
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| 503 | return ""; |
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| 504 | abac_term_t *cur; |
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| 505 | char *final=NULL; |
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| 506 | char *tmp=NULL; |
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| 507 | |
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| 508 | /* collect up all the string */ |
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| 509 | abac_list_foreach(list, cur, |
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| 510 | char *s=abac_term_string(cur); |
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| 511 | if(final==NULL) { |
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| 512 | final=abac_xstrdup(s); |
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| 513 | } else { |
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| 514 | tmp=final; |
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| 515 | final=NULL; |
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| 516 | asprintf(&final,"%s,%s",tmp,s); |
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| 517 | if(debug) printf("param so far, %s\n", final); |
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| 518 | free(tmp); |
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| 519 | } |
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| 520 | free(s); |
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| 521 | ); |
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| 522 | if(debug) printf("param so far, %s\n", final); |
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| 523 | return final; |
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| 524 | } |
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| 525 | |
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| 526 | /* make a stack of it for the abac.hh */ |
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| 527 | abac_term_t **abac_param_list_vectorize(abac_param_list_t *ptr) |
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| 528 | { |
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| 529 | abac_term_t **terms=NULL; |
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| 530 | abac_list_t *list=ptr->list; |
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| 531 | int cnt=0; |
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| 532 | if(list != NULL) |
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| 533 | cnt=abac_list_size(list); |
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| 534 | |
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| 535 | // make the array (leave space to NULL terminate it) |
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| 536 | // n.b., even if the list is empty, we still return an array that |
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| 537 | // only contains the NULL terminator |
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| 538 | terms = abac_xmalloc(sizeof(abac_term_t *) * (cnt + 1)); |
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| 539 | |
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| 540 | abac_term_t *cur; |
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| 541 | int i = 0; |
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| 542 | if(i<cnt) { |
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| 543 | abac_list_foreach(list, cur, |
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| 544 | terms[i++] = abac_term_dup(cur); |
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| 545 | ); |
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| 546 | } |
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| 547 | terms[i] = NULL; |
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| 548 | return terms; |
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| 549 | } |
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| 550 | |
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| 551 | void abac_terms_free(abac_term_t **terms) |
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| 552 | { |
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| 553 | /* always null terminating */ |
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| 554 | assert(terms); |
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| 555 | int i; |
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| 556 | for (i = 0; terms[i] != NULL; ++i) { |
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| 557 | abac_term_free(terms[i]); |
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| 558 | } |
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| 559 | free(terms); |
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| 560 | } |
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