[8bd77b5] | 1 | |
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| 2 | /** |
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| 3 | ** abac_attribute.c |
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| 4 | **/ |
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| 5 | |
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| 6 | #include <assert.h> |
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| 7 | #include <ctype.h> |
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| 8 | #include <string.h> |
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| 9 | #include <time.h> |
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| 10 | |
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| 11 | #include "abac_internal.h" |
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| 12 | #include "abac_util.h" |
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[dfe6b61] | 13 | #include "abac_rt.h" |
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[8bd77b5] | 14 | |
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| 15 | #define SHA1_LENGTH 40 |
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| 16 | |
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| 17 | extern char* abac_encode_string(char*); |
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[ba6027a] | 18 | extern abac_key_t *abac_id_keyptr(abac_id_t *id); |
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[dfe6b61] | 19 | extern abac_aspect_t *abac_yy_get_rule_head_aspect(); |
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| 20 | extern abac_aspect_t *abac_yy_get_rule_tail_aspect(); |
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| 21 | extern abac_list_t *abac_yy_get_rule_clauses(); |
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| 22 | extern char* abac_decode_string(char *); |
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| 23 | extern void abac_yy_free_rule_clauses(); |
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| 24 | extern int verify_signature(certificate_t *issuer_cert, certificate_t *cert); |
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| 25 | |
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| 26 | abac_attribute_t *abac_attribute_set_head(abac_attribute_t *ptr, abac_aspect_t *head); |
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[8bd77b5] | 27 | |
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| 28 | static int debug=0; |
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| 29 | |
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| 30 | struct _abac_attribute_t { |
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| 31 | abac_id_t *issuer_id; |
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| 32 | abac_aspect_t *head; |
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| 33 | abac_aspect_t *tail; |
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| 34 | int validity; |
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| 35 | certificate_t *cert; // NULL until baked |
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| 36 | certificate_t *issuer_cert; |
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| 37 | |
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| 38 | int refcount; |
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| 39 | }; |
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| 40 | |
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| 41 | /********************************************************************/ |
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[5d06689] | 42 | char *get_cred_encoding(abac_attribute_t *ptr) |
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[8bd77b5] | 43 | { |
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| 44 | char *encoding=NULL; |
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| 45 | |
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| 46 | /* must have a head aspect and tail aspect */ |
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| 47 | assert(ptr->head != NULL); |
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| 48 | assert(ptr->tail != NULL); |
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| 49 | |
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| 50 | char *head_string=abac_aspect_typed_string_with_condition(ptr->head); |
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| 51 | char *tail_string=abac_aspect_typed_string_with_condition(ptr->tail); |
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| 52 | |
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| 53 | asprintf(&encoding,"%s<-%s", head_string,tail_string); |
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| 54 | char* base64_encoding=abac_encode_string(encoding); |
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| 55 | |
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[b92a620] | 56 | if(debug) fprintf(stderr,"XXX abac_attribute_bake (%s)\n", encoding); |
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[8bd77b5] | 57 | |
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| 58 | free(encoding); |
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| 59 | free(head_string); |
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| 60 | free(tail_string); |
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| 61 | return base64_encoding; |
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| 62 | } |
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| 63 | |
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| 64 | /********************************************************************/ |
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| 65 | abac_attribute_t *abac_attribute_new(abac_id_t *issuer, certificate_t *cert, |
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| 66 | certificate_t *issuer_cert) |
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| 67 | { |
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| 68 | abac_attribute_t *ptr = abac_xmalloc(sizeof(abac_attribute_t)); |
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| 69 | ptr->issuer_id = abac_id_dup(issuer); |
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| 70 | ptr->head = NULL; |
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| 71 | ptr->tail = NULL; |
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| 72 | ptr->validity= 365 * 86400; // default |
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| 73 | ptr->cert=cert; // already baked.. |
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| 74 | ptr->issuer_cert=issuer_cert; |
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| 75 | ptr->refcount=1; |
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| 76 | |
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| 77 | return ptr; |
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| 78 | } |
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| 79 | |
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| 80 | // validity is measured in seconds (as of 0.2.0) |
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| 81 | int abac_attribute_create(abac_attribute_t **ret, |
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| 82 | abac_aspect_t *head, abac_aspect_t *tail, int validity) |
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| 83 | { |
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| 84 | abac_id_t *issuer_id=abac_aspect_get_issuer_id(head); |
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[ba6027a] | 85 | if(debug) |
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| 86 | print_abac_key("abac_attribute_create" , abac_id_keyptr(issuer_id)); |
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| 87 | |
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[8bd77b5] | 88 | char *name=abac_aspect_aspect_name(head); |
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| 89 | |
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[ba6027a] | 90 | if (!abac_id_has_privkey(issuer_id)) |
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[8bd77b5] | 91 | return ABAC_ATTRIBUTE_ISSUER_NOKEY; |
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| 92 | if (!abac_validate_clean_aspect_name(name)) |
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| 93 | return ABAC_ATTRIBUTE_INVALID_ROLE; |
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| 94 | if (validity < 0) |
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| 95 | return ABAC_ATTRIBUTE_INVALID_VALIDITY; |
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| 96 | |
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| 97 | abac_attribute_t *ptr = abac_xmalloc(sizeof(abac_attribute_t)); |
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| 98 | ptr->issuer_id = abac_id_dup(issuer_id); |
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| 99 | ptr->head = abac_aspect_dup(head); |
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| 100 | ptr->tail = (tail!=NULL) ? abac_aspect_dup(tail):NULL; |
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| 101 | ptr->validity=(validity==0?(365 * 86400):validity); |
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| 102 | |
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| 103 | // NULL until baked |
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| 104 | ptr->cert=NULL; |
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| 105 | ptr->issuer_cert=NULL; |
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| 106 | ptr->refcount=1; |
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| 107 | *ret = ptr; |
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| 108 | return ABAC_ATTRIBUTE_SUCCESS; |
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| 109 | } |
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| 110 | |
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| 111 | // validity is measured in seconds (as of 0.2.0) |
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| 112 | int abac_attribute_create_creddy(abac_attribute_t **ret, abac_id_t *issuer, |
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| 113 | abac_aspect_t *head_aspect, abac_aspect_t *tail_aspect, char *name, int validity) |
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| 114 | { |
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[ba6027a] | 115 | if (!abac_id_has_privkey(issuer)) |
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[8bd77b5] | 116 | return ABAC_ATTRIBUTE_ISSUER_NOKEY; |
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| 117 | if (!abac_validate_clean_aspect_name(name)) |
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| 118 | return ABAC_ATTRIBUTE_INVALID_ROLE; |
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| 119 | if (validity < 0) |
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| 120 | return ABAC_ATTRIBUTE_INVALID_VALIDITY; |
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| 121 | |
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| 122 | abac_attribute_t *ptr = abac_xmalloc(sizeof(abac_attribute_t)); |
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| 123 | ptr->issuer_id = abac_id_dup(issuer); |
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| 124 | |
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| 125 | ptr->head=head_aspect; |
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| 126 | ptr->tail=tail_aspect; |
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| 127 | ptr->validity = validity; |
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| 128 | |
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| 129 | // NULL until baked |
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| 130 | ptr->cert = NULL; |
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| 131 | ptr->issuer_cert = NULL; |
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| 132 | *ret = ptr; |
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| 133 | return ABAC_ATTRIBUTE_SUCCESS; |
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| 134 | } |
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| 135 | |
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| 136 | int abac_attribute_bake(abac_attribute_t *ptr) { |
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| 137 | assert(ptr); |
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| 138 | |
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[5d06689] | 139 | char *cred_encoding = get_cred_encoding(ptr); |
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[8bd77b5] | 140 | |
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| 141 | // create attribute cert |
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| 142 | time_t not_before = time(NULL); |
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| 143 | time_t not_after = not_before + ptr->validity; |
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| 144 | chunk_t serial = abac_generate_serial(); |
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| 145 | |
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[ba6027a] | 146 | private_key_t *private = abac_id_privkey(ptr->issuer_id); |
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| 147 | |
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| 148 | if(private==NULL) |
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| 149 | errx(1,"can not bake without a private key!!!"); |
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| 150 | |
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[8bd77b5] | 151 | certificate_t *attr_cert = lib->creds->create(lib->creds, |
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| 152 | CRED_CERTIFICATE, CERT_X509_AC, |
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| 153 | BUILD_CERT, abac_id_cert(ptr->issuer_id), |
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| 154 | BUILD_NOT_BEFORE_TIME, not_before, |
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| 155 | BUILD_NOT_AFTER_TIME, not_after, |
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| 156 | BUILD_SERIAL, serial, |
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| 157 | BUILD_IETF_GROUP_ATTR, cred_encoding, |
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| 158 | BUILD_SIGNING_CERT, abac_id_cert(ptr->issuer_id), |
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[ba6027a] | 159 | BUILD_SIGNING_KEY, private, |
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[8bd77b5] | 160 | BUILD_END |
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| 161 | ); |
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[d037f54] | 162 | |
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[ba6027a] | 163 | DESTROY_IF(private); |
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| 164 | |
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[8bd77b5] | 165 | if (attr_cert == NULL) |
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| 166 | return 0; |
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| 167 | |
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| 168 | ptr->cert = attr_cert; |
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[137b55f] | 169 | // cert and issuer can be the same, in which case it is the self signing |
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[8bd77b5] | 170 | ptr->issuer_cert= attr_cert->get_ref(attr_cert); |
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| 171 | |
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| 172 | free(cred_encoding); |
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| 173 | free(serial.ptr); |
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| 174 | return 1; |
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| 175 | } |
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| 176 | |
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| 177 | abac_chunk_t abac_attribute_cert_chunk(abac_attribute_t *ptr) { |
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| 178 | assert(ptr->cert); |
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[137b55f] | 179 | chunk_t encoding = chunk_empty; |
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| 180 | int rc=ptr->cert->get_encoding(ptr->cert,CERT_ASN1_DER,&encoding); |
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[8bd77b5] | 181 | abac_chunk_t ret = { encoding.ptr, encoding.len }; |
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| 182 | return ret; |
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| 183 | } |
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| 184 | |
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[2efdff5] | 185 | /* just loading it without any verifying */ |
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[dfe6b61] | 186 | certificate_t *abac_attribute_cert_from_file(char *filename) { |
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[2efdff5] | 187 | |
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| 188 | if(!file_exist(filename)) return NULL; |
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| 189 | |
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| 190 | libabac_init(); |
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| 191 | certificate_t *cert = lib->creds->create(lib->creds, |
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| 192 | CRED_CERTIFICATE, CERT_X509_AC, |
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| 193 | BUILD_FROM_FILE, filename, |
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| 194 | BUILD_END |
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| 195 | ); |
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| 196 | if (cert == NULL) |
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| 197 | errx(1, "Couldn't load attribute cert %s", filename); |
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| 198 | |
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| 199 | return cert; |
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| 200 | } |
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| 201 | |
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| 202 | |
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[dfe6b61] | 203 | certificate_t *abac_attribute_cert_from_chunk(abac_chunk_t achunk) { |
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| 204 | |
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| 205 | chunk_t chunk = { .ptr = achunk.ptr, .len = achunk.len }; |
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| 206 | if(achunk.len == 0) { |
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| 207 | errx(1, "Couldn't load attribute chunk, size of 0"); |
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| 208 | } |
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| 209 | |
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| 210 | libabac_init(); |
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| 211 | certificate_t *cert = lib->creds->create(lib->creds, |
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| 212 | CRED_CERTIFICATE, CERT_X509_AC, |
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| 213 | BUILD_BLOB_ASN1_DER, chunk, |
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| 214 | BUILD_END |
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| 215 | ); |
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| 216 | if (cert == NULL) |
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| 217 | errx(1, "Couldn't load attribute chunk"); |
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| 218 | |
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| 219 | return cert; |
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| 220 | } |
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| 221 | |
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| 222 | |
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| 223 | /** |
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| 224 | * Load an attribute cert with a cert. |
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| 225 | * Returns true only if the certificate is valid and is issued by the proper |
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| 226 | * authority. |
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| 227 | * attribute string is parsed via yyparse call |
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| 228 | */ |
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| 229 | static abac_attribute_t *_load_attribute_from_cert(certificate_t *cert) { |
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| 230 | ietf_attributes_t *attr_cert = NULL; |
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| 231 | int ret, i; |
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| 232 | |
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| 233 | // get the attr |
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| 234 | ac_t *ac = (ac_t *)cert; |
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| 235 | attr_cert = ac->get_groups(ac); |
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| 236 | if (attr_cert == NULL) { |
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| 237 | ret = ABAC_CERT_INVALID; |
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| 238 | goto error; |
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| 239 | } |
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| 240 | |
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| 241 | char *encoded_attr_string=attr_cert->get_string(attr_cert); |
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| 242 | char *attr_string = abac_decode_string(encoded_attr_string); |
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| 243 | if(debug) |
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| 244 | fprintf(stderr, "string to be yyparse..(%d)(%s)\n",strlen(attr_string),attr_string); |
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| 245 | |
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| 246 | if (attr_string == NULL) { |
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| 247 | ret = ABAC_CERT_INVALID; |
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| 248 | goto error; |
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| 249 | } |
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| 250 | |
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| 251 | /* call into yacc parser */ |
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| 252 | abac_reset_yyfptr(attr_string); |
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| 253 | abac_yy_init(); |
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| 254 | int rc=yyparse(); |
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| 255 | if (rc) { |
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| 256 | ret = ABAC_CERT_INVALID; |
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| 257 | goto error; |
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| 258 | } |
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| 259 | |
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| 260 | abac_aspect_t *head_aspect = NULL; |
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| 261 | abac_aspect_t *tail_aspect = NULL; |
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| 262 | abac_list_t *clauses=NULL; |
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| 263 | abac_id_credential_t *id_cred; |
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| 264 | abac_id_t *issuer_id; |
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| 265 | |
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| 266 | // get the attr |
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| 267 | head_aspect = abac_yy_get_rule_head_aspect(); |
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| 268 | tail_aspect = abac_yy_get_rule_tail_aspect(); |
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| 269 | clauses = abac_yy_get_rule_clauses(); |
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| 270 | |
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| 271 | // get the issuer based on keyid |
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| 272 | char *principalname = abac_aspect_principal_principalname(head_aspect); |
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| 273 | if(debug) fprintf(stderr, "LOOKING for %s\n", principalname); |
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| 274 | |
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| 275 | id_cred = abac_id_credential_lookup(principalname); |
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| 276 | if(id_cred == NULL) { |
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| 277 | ret = ABAC_CERT_MISSING_ISSUER; |
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| 278 | if(debug) |
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| 279 | fprintf(stderr, "can not find %s in id_creds\n", principalname); |
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| 280 | goto error; |
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| 281 | } |
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| 282 | |
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| 283 | issuer_id=abac_id_credential_id(id_cred); |
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| 284 | if (issuer_id == NULL) { |
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| 285 | ret = ABAC_CERT_MISSING_ISSUER; |
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| 286 | if(debug) |
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| 287 | fprintf(stderr, "can not find %s in id_creds\n", principalname); |
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| 288 | goto error; |
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| 289 | } |
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| 290 | // make sure the issuer's signed it |
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| 291 | ret = verify_signature(abac_id_cert(issuer_id), cert); |
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| 292 | if (!ret) { |
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| 293 | abac_yy_set_error_code(ABAC_RT_CERT_BAD_SIG); |
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| 294 | ret=ABAC_CERT_BAD_SIG; |
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| 295 | goto error; |
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| 296 | } |
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| 297 | |
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| 298 | // at this point we know we have a good attribute cert baked it in |
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| 299 | abac_attribute_t *attr=abac_attribute_new(issuer_id, cert, cert->get_ref(cert)); |
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| 300 | abac_attribute_set_head(attr, head_aspect); |
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| 301 | abac_attribute_add_tail(attr, tail_aspect); |
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| 302 | |
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| 303 | // free up some stuff |
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| 304 | attr_cert->destroy(attr_cert); |
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| 305 | |
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| 306 | return attr; |
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| 307 | |
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| 308 | error: |
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| 309 | if (cert) cert->destroy(cert); |
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| 310 | errx(1, "fail to extract attribute from a cert properly\n"); |
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| 311 | } |
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| 312 | |
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| 313 | abac_attribute_t *abac_attribute_from_chunk(abac_chunk_t achunk) |
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| 314 | { |
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| 315 | certificate_t *cert=abac_attribute_cert_from_chunk(achunk); |
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| 316 | abac_attribute_t *ret=_load_attribute_from_cert(cert); |
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| 317 | return ret; |
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| 318 | } |
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| 319 | |
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| 320 | // returns 0 if the cert hasn't been baked |
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[8bd77b5] | 321 | int abac_attribute_baked(abac_attribute_t *ptr) { |
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| 322 | return ptr->cert != NULL; |
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| 323 | } |
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| 324 | |
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[5d06689] | 325 | int abac_attribute_write_cert(abac_attribute_t *ptr, FILE *out) { |
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[8bd77b5] | 326 | assert(ptr != NULL); |
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| 327 | |
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| 328 | if (ptr->cert == NULL) |
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| 329 | return 0; |
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| 330 | |
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| 331 | // write to file |
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[137b55f] | 332 | chunk_t encoding = chunk_empty; |
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| 333 | int rc=ptr->cert->get_encoding(ptr->cert,CERT_ASN1_DER,&encoding); |
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| 334 | |
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| 335 | if(rc) { |
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| 336 | fwrite(encoding.ptr, encoding.len, 1, out); |
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| 337 | free(encoding.ptr); |
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| 338 | return 1; |
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| 339 | } |
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| 340 | return 0; |
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[8bd77b5] | 341 | } |
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| 342 | |
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| 343 | abac_attribute_t *abac_attribute_dup(abac_attribute_t *ptr) |
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| 344 | { |
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| 345 | assert(ptr); |
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| 346 | ++ptr->refcount; |
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| 347 | return ptr; |
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| 348 | } |
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| 349 | |
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| 350 | void abac_attribute_free(abac_attribute_t *ptr) { |
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| 351 | int i; |
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| 352 | |
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| 353 | if (ptr == NULL) |
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| 354 | return; |
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| 355 | |
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| 356 | --ptr->refcount; |
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| 357 | if (ptr->refcount > 0) |
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| 358 | return; |
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| 359 | |
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| 360 | if(ptr->issuer_id) abac_id_free(ptr->issuer_id); |
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| 361 | if(ptr->head) abac_aspect_free(ptr->head); |
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| 362 | if(ptr->tail) abac_aspect_free(ptr->tail); |
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| 363 | |
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| 364 | if(ptr->cert) DESTROY_IF(ptr->cert); |
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| 365 | if(ptr->issuer_cert) DESTROY_IF(ptr->issuer_cert); |
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| 366 | |
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| 367 | free(ptr); |
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| 368 | } |
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| 369 | |
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[5d06689] | 370 | |
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| 371 | char *abac_attribute_string(abac_attribute_t *ptr) |
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| 372 | { |
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| 373 | char *head=abac_aspect_string_with_condition(ptr->head); |
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| 374 | char *tail=abac_aspect_string_with_condition(ptr->tail); |
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| 375 | if(head==NULL || tail==NULL) |
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[2efdff5] | 376 | errx(1, "attribute string, head and tail can not be NULL"); |
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[5d06689] | 377 | char *tmp=NULL; |
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| 378 | asprintf(&tmp,"%s<-%s",head,tail); |
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| 379 | return tmp; |
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| 380 | } |
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| 381 | char *abac_attribute_typed_string(abac_attribute_t *ptr) |
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| 382 | { |
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| 383 | char *head=abac_aspect_typed_string_with_condition(ptr->head); |
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| 384 | char *tail=abac_aspect_typed_string_with_condition(ptr->tail); |
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| 385 | if(head==NULL || tail==NULL) |
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[2efdff5] | 386 | errx(1, "attribute typed string, head and tail can not be NULL"); |
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[5d06689] | 387 | char *tmp=NULL; |
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| 388 | asprintf(&tmp,"%s<-%s",head,tail); |
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| 389 | return tmp; |
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| 390 | } |
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| 391 | |
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[8bd77b5] | 392 | /********************************************************************/ |
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| 393 | certificate_t *abac_attribute_issuer_cert(abac_attribute_t *ptr) |
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| 394 | { |
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| 395 | assert(ptr); |
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| 396 | return ptr->issuer_cert; |
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| 397 | } |
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| 398 | |
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| 399 | abac_aspect_t *abac_attribute_head(abac_attribute_t *ptr) |
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| 400 | { |
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| 401 | assert(ptr); |
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| 402 | return ptr->head; |
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| 403 | } |
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| 404 | |
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[2a73357] | 405 | int abac_attribute_is_role(abac_attribute_t *ptr) |
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[adc0815] | 406 | { |
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| 407 | assert(ptr); |
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| 408 | assert(ptr->head); |
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| 409 | return abac_aspect_is_role(ptr->head); |
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| 410 | } |
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| 411 | |
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[8bd77b5] | 412 | abac_attribute_t *abac_attribute_set_head(abac_attribute_t *ptr, abac_aspect_t *head) |
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| 413 | { |
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| 414 | assert(ptr); |
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| 415 | ptr->head=head; |
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| 416 | return ptr; |
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| 417 | } |
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| 418 | |
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| 419 | abac_aspect_t *abac_attribute_tail(abac_attribute_t *ptr) |
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| 420 | { |
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| 421 | assert(ptr); |
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| 422 | return ptr->tail; |
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| 423 | } |
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| 424 | |
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| 425 | abac_attribute_t *abac_attribute_add_tail(abac_attribute_t *ptr, abac_aspect_t *tail) |
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| 426 | { |
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| 427 | assert(ptr); |
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| 428 | assert(tail); |
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| 429 | |
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| 430 | /* type of head and tail has to match */ |
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| 431 | abac_aspect_t *head=abac_attribute_head(ptr); |
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[2a73357] | 432 | |
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[6244e28] | 433 | if(debug) { |
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| 434 | fprintf(stderr, "head->(%s)\n",abac_aspect_type_string(head)); |
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| 435 | fprintf(stderr, "tail->(%s)\n",abac_aspect_type_string(tail)); |
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| 436 | } |
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[8bd77b5] | 437 | if(abac_aspect_is_intersecting(tail)) { |
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| 438 | if(debug) { |
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[b92a620] | 439 | fprintf(stderr, "tail is intersection \n"); |
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| 440 | fprintf(stderr, "tail is (%s)\n", abac_aspect_string_with_condition(tail)); |
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[8bd77b5] | 441 | } |
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| 442 | if(abac_aspect_intersecting_aspect_type(tail) != abac_aspect_aspect_type(head)) |
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[6244e28] | 443 | errx(1, "head and intersecting tail's aspect type does not match"); |
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[8bd77b5] | 444 | } else { |
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| 445 | if(abac_aspect_aspect_type(head) != abac_aspect_aspect_type(tail)) { |
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[6244e28] | 446 | if(debug) |
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[b92a620] | 447 | fprintf(stderr, "tail is (%s)\n", abac_aspect_string_with_condition(tail)); |
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[8bd77b5] | 448 | errx(1, "head and tail's aspect type does not match"); |
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| 449 | } |
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| 450 | } |
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| 451 | |
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| 452 | if(ptr->tail == NULL) { |
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| 453 | ptr->tail=abac_aspect_dup(tail); |
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| 454 | } else { |
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| 455 | if(abac_aspect_is_intersecting(ptr->tail)) { |
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| 456 | abac_aspect_add_intersecting_aspect(ptr->tail, tail); |
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| 457 | } else { |
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| 458 | /* special case.. if there is a tail there already and it is not an intersecting |
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| 459 | tail, need to turn this into an intersecting tails */ |
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| 460 | abac_aspect_t *nptr=abac_aspect_intersection_new(ptr->tail); |
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| 461 | abac_aspect_add_intersecting_aspect(nptr, tail); |
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| 462 | ptr->tail=nptr; |
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| 463 | } |
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| 464 | } |
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| 465 | return ptr; |
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| 466 | } |
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| 467 | |
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| 468 | certificate_t *abac_attribute_cert(abac_attribute_t *ptr) |
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| 469 | { |
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| 470 | assert(ptr); |
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| 471 | return ptr->cert; |
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| 472 | } |
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| 473 | |
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| 474 | int abac_attribute_lastone(abac_attribute_t *ptr) |
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| 475 | { |
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| 476 | assert(ptr); |
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| 477 | if(ptr->refcount == 1) |
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| 478 | return 1; |
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| 479 | return 0; |
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| 480 | } |
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| 481 | |
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| 482 | |
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| 483 | abac_aspect_t **abac_attribute_tail_vectorized(abac_attribute_t *ptr) |
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| 484 | { |
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| 485 | abac_aspect_t **tails=NULL; |
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| 486 | abac_aspect_t *tail=ptr->tail; |
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| 487 | abac_list_t *list=NULL; |
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| 488 | int cnt=0; |
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| 489 | if(tail != NULL) { |
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| 490 | if(!abac_aspect_is_intersecting(tail)) { |
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| 491 | tails = abac_xmalloc(sizeof(abac_aspect_t *) * 2); |
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| 492 | tails[0] = abac_aspect_dup(tail); |
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| 493 | tails[1] = NULL; |
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| 494 | if(debug) { |
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[b92a620] | 495 | fprintf(stderr, "abac_attribute_tail_vectorized, only 1 tail\n"); |
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[8bd77b5] | 496 | } |
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| 497 | return tails; |
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| 498 | } else { |
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| 499 | abac_list_t *list=abac_aspect_prereqs(tail); |
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| 500 | cnt=abac_list_size(list); |
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| 501 | } |
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| 502 | } |
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| 503 | // make the array (leave space to NULL terminate it) |
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| 504 | // n.b., even if the list is empty, we still return an array that |
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| 505 | // only contains the NULL terminator |
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| 506 | tails = abac_xmalloc(sizeof(abac_aspect_t *) * (cnt + 1)); |
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| 507 | abac_aspect_t *cur; |
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| 508 | int i = 0; |
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| 509 | if(i<cnt) { |
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| 510 | abac_list_foreach(list, cur, |
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| 511 | tails[i++] = abac_aspect_dup(cur); |
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| 512 | ); |
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| 513 | } |
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| 514 | tails[i] = NULL; |
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| 515 | if(debug) |
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[b92a620] | 516 | fprintf(stderr, "abac_attribute_tail_vectorized, %d tails\n", cnt); |
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[8bd77b5] | 517 | return tails; |
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| 518 | } |
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| 519 | |
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| 520 | void abac_aspects_free(abac_aspect_t **aspects) |
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| 521 | { |
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| 522 | /* always null terminating */ |
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| 523 | assert(aspects); |
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| 524 | int i; |
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| 525 | for (i = 0; aspects[i] != NULL; ++i) { |
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| 526 | abac_aspect_free(aspects[i]); |
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| 527 | } |
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| 528 | free(aspects); |
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| 529 | } |
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