abac0-leakabac0-meicompt_changesgec13mei-idmei-rt0-nmei_rt0mei_rt2mei_rt2_fix_1meiyap-rt1meiyap1rt2tvf-new-xml
Last change
on this file since 0eb4a8e was
15200be,
checked in by Mike Ryan <mikeryan@…>, 14 years ago
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move libabac into its own directory
|
-
Property mode set to
100644
|
File size:
1.5 KB
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Rev | Line | |
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[cb0f2b2] | 1 | #include <stdlib.h> |
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| 2 | |
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[2fd24c7] | 3 | #include "abac_set.h" |
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[3c251d0] | 4 | #include "abac_util.h" |
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[cb0f2b2] | 5 | |
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| 6 | #include "uthash.h" |
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| 7 | |
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[2fd24c7] | 8 | typedef struct _abac_set_element_t { |
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[fdb4f28] | 9 | char *key; |
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| 10 | UT_hash_handle hh; |
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[2fd24c7] | 11 | } abac_set_element_t; |
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[fdb4f28] | 12 | |
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[2fd24c7] | 13 | struct _abac_set_t { |
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| 14 | abac_set_element_t *elts; |
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[fdb4f28] | 15 | }; |
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| 16 | |
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[48f3a37] | 17 | /** |
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| 18 | * Create a new struct. |
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| 19 | */ |
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[2fd24c7] | 20 | abac_set_t *abac_set_new(void) { |
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[3c251d0] | 21 | abac_set_t *ret = abac_xmalloc(sizeof(abac_set_t)); |
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[cb0f2b2] | 22 | ret->elts = NULL; |
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| 23 | return ret; |
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| 24 | } |
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| 25 | |
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| 26 | /** |
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| 27 | * Add an item to the set, returns true if it doesn't exist. |
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| 28 | */ |
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[2fd24c7] | 29 | int abac_set_add(abac_set_t *set, char *value) { |
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| 30 | abac_set_element_t *elt; |
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[cb0f2b2] | 31 | |
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| 32 | HASH_FIND_STR(set->elts, value, elt); |
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| 33 | if (elt) return 0; // already exists |
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| 34 | |
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[3c251d0] | 35 | elt = abac_xmalloc(sizeof(abac_set_element_t)); |
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| 36 | elt->key = abac_xstrdup(value); |
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[cb0f2b2] | 37 | HASH_ADD_KEYPTR(hh, set->elts, elt->key, strlen(elt->key), elt); |
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| 38 | |
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| 39 | return 1; |
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| 40 | } |
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[ebde9dd] | 41 | |
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[1fa0621] | 42 | /** |
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| 43 | * Does the set contain the value. |
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| 44 | */ |
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[2fd24c7] | 45 | int abac_set_contains(abac_set_t *set, char *value) { |
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| 46 | abac_set_element_t *elt; |
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[1fa0621] | 47 | |
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| 48 | HASH_FIND_STR(set->elts, value, elt); |
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| 49 | return elt != NULL; |
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| 50 | } |
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| 51 | |
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[ebde9dd] | 52 | /** |
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| 53 | * Return a list of the set's elements. |
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| 54 | */ |
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[2fd24c7] | 55 | abac_list_t *abac_set_elements(abac_set_t *set) { |
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| 56 | abac_set_element_t *elt; |
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[6d5623e] | 57 | abac_list_t *ret = abac_list_new(); |
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[ebde9dd] | 58 | |
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| 59 | for (elt = set->elts; elt != NULL; elt = elt->hh.next) { |
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| 60 | char *next = elt->key; |
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[6d5623e] | 61 | abac_list_add(ret, next); |
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[ebde9dd] | 62 | } |
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| 63 | |
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| 64 | return ret; |
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| 65 | } |
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| 66 | |
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| 67 | /** |
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| 68 | * Destroy a set. |
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| 69 | */ |
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[2fd24c7] | 70 | void abac_set_free(abac_set_t *set) { |
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| 71 | abac_set_element_t *elt; |
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[ebde9dd] | 72 | |
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[be963dc] | 73 | while ((elt = set->elts) != NULL) { |
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| 74 | HASH_DEL(set->elts, elt); |
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[ebde9dd] | 75 | free(elt->key); |
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[be963dc] | 76 | free(elt); |
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| 77 | } |
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[ebde9dd] | 78 | |
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| 79 | free(set); |
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| 80 | } |
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