[8bd77b5] | 1 | /** |
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| 2 | ** abac_verifier.c |
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| 3 | **/ |
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[53e540d] | 4 | |
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| 5 | // include the GNU extension of asprintf |
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| 6 | #define _GNU_SOURCE |
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| 7 | |
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[5110d42] | 8 | #include <stdio.h> |
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| 9 | #include <regex.h> |
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| 10 | #include <sys/mman.h> |
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| 11 | #include <fcntl.h> |
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[d037f54] | 12 | #include <sys/types.h> |
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| 13 | #include <sys/stat.h> |
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| 14 | #include <unistd.h> |
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| 15 | |
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[5110d42] | 16 | |
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[186cb75] | 17 | #include <assert.h> |
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[202a7f9] | 18 | #include <stdio.h> |
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[186cb75] | 19 | |
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[5450aeb] | 20 | #include <library.h> |
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| 21 | |
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[8bd77b5] | 22 | #include "abac_internal.h" |
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[43e3b71] | 23 | #include "abac_verifier.h" |
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[5450aeb] | 24 | |
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[3c251d0] | 25 | #include "abac_util.h" |
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[202a7f9] | 26 | #include "abac_rt.h" |
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[5450aeb] | 27 | |
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[8bd77b5] | 28 | static int debug=0; |
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[5d06689] | 29 | |
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| 30 | /* from abac_attribute.c */ |
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| 31 | extern char *get_cred_encoding(abac_attribute_t *ptr); |
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[8bd77b5] | 32 | |
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| 33 | extern abac_aspect_t *abac_yy_get_rule_head_aspect(); |
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| 34 | extern abac_aspect_t *abac_yy_get_rule_tail_aspect(); |
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[b5a3da4] | 35 | extern abac_list_t *abac_yy_get_rule_clauses(); |
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[da5afdf] | 36 | extern char* abac_decode_string(char *); |
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[b5a3da4] | 37 | extern void abac_yy_free_rule_clauses(); |
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[0d0c3a9] | 38 | extern char *generate_pl_type_clause(char *, int); |
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[5d06689] | 39 | extern abac_list_t *generate_pl_clauses(abac_aspect_t *, abac_aspect_t *); |
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[9b43fc3] | 40 | extern void generate_pl_set_abac_yyfptr_encoded(char *string); |
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[0d0c3a9] | 41 | |
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[8bd77b5] | 42 | extern void abac_print_aspect_string_with_condition(abac_aspect_t *role, FILE*); |
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[202a7f9] | 43 | |
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[8bd77b5] | 44 | struct _abac_id_credential_t { |
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| 45 | char *hashkeyid; |
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| 46 | abac_id_t *id; |
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| 47 | char *pl_clause; |
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[5450aeb] | 48 | |
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| 49 | UT_hash_handle hh; |
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[202a7f9] | 50 | }; |
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[8bd77b5] | 51 | /* hash table base on sha with a p */ |
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| 52 | abac_id_credential_t *id_creds = NULL; |
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[5110d42] | 53 | /* linked list of all the ids's hashkeyid */ |
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| 54 | abac_list_t *id_hashkeyid_list = NULL; |
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[5450aeb] | 55 | |
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[da5afdf] | 56 | /* can store either role or oset */ |
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[401a054] | 57 | struct _abac_credential_t { |
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[8bd77b5] | 58 | char *hashkeyid; |
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| 59 | abac_attribute_t *attr; |
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| 60 | abac_list_t *pl_clauses; |
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[53e540d] | 61 | |
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| 62 | UT_hash_handle hh; |
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[8bd77b5] | 63 | }; |
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| 64 | /* hash table base on encoded attr rule */ |
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| 65 | abac_credential_t *attr_creds = NULL; |
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| 66 | /* linked list of all the attr's hashkeyid */ |
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| 67 | abac_list_t *attr_hashkeyid_list = NULL; |
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[202a7f9] | 68 | |
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[8bd77b5] | 69 | /*****************************************************************************/ |
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[da5afdf] | 70 | void abac_print_cred_info(abac_credential_t *cred, FILE *fp) |
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[202a7f9] | 71 | { |
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[da5afdf] | 72 | if(fp == NULL) |
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| 73 | fp=stdout; |
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| 74 | |
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[8bd77b5] | 75 | abac_attribute_t *ptr=cred->attr; |
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| 76 | abac_aspect_t *head=abac_attribute_head(ptr); |
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| 77 | abac_aspect_t *tail=abac_attribute_tail(ptr); |
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| 78 | |
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[202a7f9] | 79 | if(debug) { |
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[da5afdf] | 80 | fprintf(fp,"---> printing out credential info cred(%d)..\n", (int) cred); |
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[8bd77b5] | 81 | if(head) { |
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| 82 | abac_print_aspect_string_with_condition(head,fp); |
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[202a7f9] | 83 | } |
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[8bd77b5] | 84 | if(tail) { |
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| 85 | abac_print_aspect_string_with_condition(tail,fp); |
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[202a7f9] | 86 | } |
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| 87 | |
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[8bd77b5] | 88 | abac_list_t *clauses=cred->pl_clauses; |
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[202a7f9] | 89 | if (clauses != NULL) { |
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| 90 | char *cur=NULL; |
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| 91 | abac_list_foreach(clauses, cur, |
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[da5afdf] | 92 | fprintf(fp,"\n a clause(%d):\n",(int)cur); |
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[202a7f9] | 93 | if(cur) |
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[da5afdf] | 94 | fprintf(fp,"strlen(%d)loc(%d)(%s)\n", strlen(cur),(int)cur, cur); |
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[202a7f9] | 95 | ); |
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| 96 | } |
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| 97 | } else { |
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[da5afdf] | 98 | fprintf(fp," "); |
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[8bd77b5] | 99 | abac_print_aspect_string_with_condition(head,fp); |
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[da5afdf] | 100 | fprintf(fp," <- "); |
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[8bd77b5] | 101 | abac_print_aspect_string_with_condition(tail,fp); |
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[da5afdf] | 102 | fprintf(fp,"\n"); |
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[202a7f9] | 103 | } |
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| 104 | } |
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| 105 | |
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[5110d42] | 106 | void abac_print_prin_info(abac_id_credential_t *prin, FILE *fp) |
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| 107 | { |
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| 108 | if(fp == NULL) |
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| 109 | return; |
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| 110 | |
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| 111 | abac_id_t *ptr=abac_id_credential_id(prin); |
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| 112 | |
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| 113 | if(debug) fprintf(fp,"---> printing out principal info ..\n"); |
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| 114 | if(abac_id_has_privkey(ptr)) |
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| 115 | fprintf(fp," (%s,%s,y)\n",abac_id_name(ptr),abac_id_idtype_string(ptr)); |
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| 116 | else |
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| 117 | fprintf(fp," (%s,%s,n)\n",abac_id_name(ptr),abac_id_idtype_string(ptr)); |
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| 118 | } |
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| 119 | |
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[202a7f9] | 120 | // |
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[8bd77b5] | 121 | int abac_verify_idtype_type(char *type) { |
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[202a7f9] | 122 | int i; |
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| 123 | |
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| 124 | if (type == NULL) |
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| 125 | return 0; |
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| 126 | |
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[8bd77b5] | 127 | for (i = 1; i <= _idtypename_cnt ; i++) |
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| 128 | if(strcmp(type,_idtypename[i])==0) |
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[202a7f9] | 129 | return i; |
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| 130 | return 0; |
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| 131 | } |
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| 132 | |
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[8bd77b5] | 133 | char *abac_idtype_string(int i) |
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[202a7f9] | 134 | { |
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[440ba20] | 135 | if(i > _idtypename_cnt) { |
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| 136 | printf("bad idtypename idx %d\n", i); |
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[8bd77b5] | 137 | panic("abac_idtype_string: went out of range on idtypename"); |
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[440ba20] | 138 | } |
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| 139 | return (char*) _idtypename[i]; |
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[202a7f9] | 140 | } |
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| 141 | |
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[5450aeb] | 142 | // convert a chunk to a lowercase binary string |
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| 143 | // malloc's the string |
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| 144 | static char *_chunk_to_string(chunk_t chunk) { |
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| 145 | int i; |
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| 146 | |
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[3c251d0] | 147 | char *ret = abac_xmalloc(chunk.len * 2 + 1); |
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[5450aeb] | 148 | |
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| 149 | for (i = 0; i < chunk.len; ++i) |
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| 150 | sprintf(ret + 2 * i, "%02x", chunk.ptr[i]); |
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| 151 | |
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| 152 | return ret; |
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| 153 | } |
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| 154 | |
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| 155 | // verify that cert was issued by issuer |
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| 156 | // cert and issuer can be the same, in which case the self-sig is validated |
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[8bd77b5] | 157 | static int _verify_signature(certificate_t *issuer_cert, certificate_t *cert) { |
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| 158 | if (cert->issued_by(cert, issuer_cert)) |
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[5450aeb] | 159 | if (cert->get_validity(cert, NULL, NULL, NULL)) |
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| 160 | return 1; |
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| 161 | return 0; |
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| 162 | } |
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| 163 | |
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| 164 | /** |
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| 165 | * Init the verifier subsystem. |
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| 166 | */ |
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[43e3b71] | 167 | void abac_verifier_init(void) { |
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[1324a63] | 168 | // silence all debugging |
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| 169 | |
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[5450aeb] | 170 | if (!library_init(NULL)) |
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| 171 | exit(SS_RC_LIBSTRONGSWAN_INTEGRITY); |
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| 172 | |
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| 173 | if (!lib->plugins->load(lib->plugins, NULL, |
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| 174 | lib->settings->get_str(lib->settings, "pki.load", PLUGINS))) |
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| 175 | exit(SS_RC_INITIALIZATION_FAILED); |
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[8bd77b5] | 176 | |
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| 177 | attr_hashkeyid_list = abac_list_new(); |
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[5110d42] | 178 | id_hashkeyid_list = abac_list_new(); |
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[5450aeb] | 179 | } |
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| 180 | |
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[186cb75] | 181 | /** |
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| 182 | * Uninitialize the system, free up any allocated memory. |
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| 183 | */ |
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[43e3b71] | 184 | void abac_verifier_deinit(void) { |
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[137b55f] | 185 | if(debug)printf("abac_verifier_deinit... being called..\n"); |
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| 186 | |
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[8bd77b5] | 187 | abac_id_credential_t *ptr; |
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| 188 | while ((ptr = id_creds) != NULL) { |
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[5110d42] | 189 | if(debug) printf("abac_verifier_deinit: deleting id (%s)\n",abac_id_name(ptr->id)); |
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[8bd77b5] | 190 | HASH_DEL(id_creds, ptr); |
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| 191 | |
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[137b55f] | 192 | free(ptr->hashkeyid); |
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[8bd77b5] | 193 | free(ptr->pl_clause); |
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[137b55f] | 194 | abac_id_free(ptr->id); |
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[8bd77b5] | 195 | free(ptr); |
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[186cb75] | 196 | } |
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[55c272b] | 197 | |
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[8bd77b5] | 198 | abac_credential_t *ptr2; |
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| 199 | while ((ptr2 = attr_creds) != NULL) { |
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| 200 | HASH_DEL(attr_creds, ptr2); |
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| 201 | if(debug) { |
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[5110d42] | 202 | printf("abac_verifier_deinit: deleting attr hashkey(%s)\n",ptr2->hashkeyid); |
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[8bd77b5] | 203 | } |
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| 204 | free(ptr2->hashkeyid); |
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| 205 | abac_attribute_free(ptr2->attr); |
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| 206 | char *cur=NULL; |
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| 207 | abac_list_foreach(ptr2->pl_clauses, cur, |
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| 208 | free(cur); |
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| 209 | ); |
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| 210 | free(ptr2->pl_clauses); |
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| 211 | free(ptr2); |
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[53e540d] | 212 | } |
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| 213 | |
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[8bd77b5] | 214 | if(attr_hashkeyid_list) { |
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| 215 | char *cur; |
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| 216 | if(attr_hashkeyid_list) { |
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| 217 | abac_list_foreach(attr_hashkeyid_list, cur, |
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| 218 | if(cur) free(cur); |
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| 219 | ); |
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| 220 | } |
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| 221 | abac_list_free(attr_hashkeyid_list); |
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| 222 | } |
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[137b55f] | 223 | |
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[5110d42] | 224 | if(id_hashkeyid_list) { |
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[137b55f] | 225 | if(debug) printf("looking to free id_hashkeyid_lst..\n"); |
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[5110d42] | 226 | char *cur; |
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| 227 | if(id_hashkeyid_list) { |
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| 228 | abac_list_foreach(id_hashkeyid_list, cur, |
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[137b55f] | 229 | if(cur) { |
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[2efdff5] | 230 | if(debug) printf("hum.. id hashkey being freed.. %s\n", cur); |
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[137b55f] | 231 | free(cur); |
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| 232 | } |
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[5110d42] | 233 | ); |
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| 234 | } |
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| 235 | abac_list_free(id_hashkeyid_list); |
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| 236 | } |
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| 237 | |
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[55c272b] | 238 | library_deinit(); |
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[186cb75] | 239 | } |
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| 240 | |
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[8bd77b5] | 241 | abac_id_credential_t *abac_verifier_add_id_credential(abac_id_t *a_id) |
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| 242 | { |
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| 243 | abac_id_credential_t *id_cred; |
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| 244 | char *cn=abac_id_cn(a_id); |
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[d037f54] | 245 | char *keyid=abac_id_keyid(a_id); |
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[8bd77b5] | 246 | |
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[440ba20] | 247 | if(debug) { |
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| 248 | printf("abac_verifier_add_id_credential, cn(%s),keyid(%s)\n", |
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| 249 | cn, keyid); |
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| 250 | } |
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| 251 | |
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[8bd77b5] | 252 | // add the abac_id to the map of id credentials |
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| 253 | id_cred = abac_xmalloc(sizeof(abac_id_credential_t)); |
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| 254 | id_cred->hashkeyid = abac_xstrdup(keyid); |
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| 255 | id_cred->id=abac_id_dup(a_id); |
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| 256 | |
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| 257 | /* special handling here */ |
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| 258 | if(USE("ABAC_CN")) { |
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| 259 | id_cred->pl_clause = generate_pl_type_clause(cn, abac_id_idtype(a_id)); |
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| 260 | } else { |
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[d037f54] | 261 | id_cred->pl_clause=generate_pl_type_clause(prologIt(keyid), abac_id_idtype(a_id)); |
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[8bd77b5] | 262 | } |
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| 263 | HASH_ADD_KEYPTR(hh, id_creds, id_cred->hashkeyid, strlen(id_cred->hashkeyid), id_cred); |
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| 264 | if(debug) |
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| 265 | printf("-->adding into id_creds, (%s)..cnt(%d)\n", |
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| 266 | id_cred->hashkeyid, HASH_COUNT(id_creds)); |
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| 267 | |
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[5110d42] | 268 | assert(id_hashkeyid_list); |
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| 269 | abac_list_add(id_hashkeyid_list, abac_xstrdup(id_cred->hashkeyid)); |
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| 270 | return id_cred; |
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[8bd77b5] | 271 | } |
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| 272 | |
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[5450aeb] | 273 | /** |
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[440ba20] | 274 | * Load an ID |
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[5450aeb] | 275 | */ |
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[8bd77b5] | 276 | static int _load_id(abac_id_t **a_id,certificate_t *cert, abac_id_credential_t **id_cred_ret) { |
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| 277 | abac_id_credential_t *id_cred = NULL; |
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[d037f54] | 278 | char *keyid = NULL; |
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[5450aeb] | 279 | chunk_t id; |
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| 280 | int ret; |
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[2ef48fa] | 281 | x509_t *x509 = (x509_t *)cert; |
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[5450aeb] | 282 | |
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[e898049] | 283 | assert(cert != NULL); |
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[5450aeb] | 284 | |
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[7727f26] | 285 | // get the key ID, add p to keyid SHA here */ |
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[2ef48fa] | 286 | id = x509->get_subjectKeyIdentifier(x509); |
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[d037f54] | 287 | keyid = _chunk_to_string(id); |
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[327e808] | 288 | |
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[0d0c3a9] | 289 | /* Mike said this is the way it is */ |
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[53e540d] | 290 | char *str; |
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| 291 | int rv = asprintf(&str, "%Y", cert->get_issuer(cert)); |
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| 292 | |
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[36b100a] | 293 | /* add p to cn name here */ |
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[202a7f9] | 294 | char *cn=(char *)abac_xmalloc(strlen(str)+2); |
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[53e540d] | 295 | cn[0]='p'; |
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| 296 | int n=sscanf(str,"CN=%s", &(cn[1])); |
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| 297 | if ( n!=1 ) { |
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| 298 | ret = ABAC_CERT_BAD_CN; |
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| 299 | goto error; |
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| 300 | } |
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| 301 | |
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[202a7f9] | 302 | if(debug) { |
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| 303 | printf ("DEBUG:keyid %s \n", keyid); |
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| 304 | printf( "DEBUG:issuer '%s' \n", str); |
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| 305 | printf ("DEBUG:cn %s \n", cn); |
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| 306 | } |
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[53e540d] | 307 | free(str); |
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| 308 | |
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[327e808] | 309 | // if we already have this cert 'error' with success |
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[8bd77b5] | 310 | HASH_FIND_STR(id_creds, keyid, id_cred); |
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| 311 | if (id_cred != NULL) { |
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[440ba20] | 312 | if(debug) printf("existing cert \n"); |
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| 313 | ret = ABAC_CERT_EXISTS; |
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[327e808] | 314 | goto error; |
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| 315 | } |
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| 316 | |
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[5450aeb] | 317 | // validate sig |
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[0779c99] | 318 | ret = _verify_signature(cert, cert); |
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| 319 | if (!ret) { |
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| 320 | ret = ABAC_CERT_BAD_SIG; |
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| 321 | goto error; |
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| 322 | } |
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[5450aeb] | 323 | |
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[8bd77b5] | 324 | // success, add a new abac_id |
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[440ba20] | 325 | if(*a_id==NULL) { |
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| 326 | *a_id=abac_id_keyid_new(keyid,cn,cert); |
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| 327 | } |
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[5450aeb] | 328 | |
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[8bd77b5] | 329 | abac_id_credential_t *n_id_cred=abac_verifier_add_id_credential(*a_id); |
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| 330 | *id_cred_ret=n_id_cred; |
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[202a7f9] | 331 | |
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[0779c99] | 332 | return ABAC_CERT_SUCCESS; |
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[5450aeb] | 333 | |
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| 334 | error: |
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[327e808] | 335 | if (keyid != NULL) free(keyid); |
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[53e540d] | 336 | if (cn != NULL) free(cn); |
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[5450aeb] | 337 | |
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[0779c99] | 338 | return ret; |
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[5450aeb] | 339 | } |
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| 340 | |
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[8bd77b5] | 341 | /* collect all the creds stored so far */ |
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| 342 | abac_stack_t *abac_verifier_dump_creds() |
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[202a7f9] | 343 | { |
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[8bd77b5] | 344 | abac_stack_t *cred_list = abac_stack_new(); |
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| 345 | |
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| 346 | int cnt=0; |
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| 347 | if(attr_hashkeyid_list) { |
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| 348 | char *keyid; |
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| 349 | abac_credential_t *cred; |
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| 350 | abac_list_foreach(attr_hashkeyid_list, keyid, |
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| 351 | cred=abac_credential_lookup(keyid); |
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| 352 | abac_stack_push(cred_list, cred); |
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| 353 | cnt++; |
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| 354 | ); |
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| 355 | } |
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[5110d42] | 356 | if(debug) printf("abac_verifier_dump_cred: %d\n",cnt); |
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[8bd77b5] | 357 | return cred_list; |
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| 358 | } |
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| 359 | |
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[5110d42] | 360 | /* collect all the id stored so far */ |
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| 361 | abac_stack_t *abac_verifier_dump_principals() |
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| 362 | { |
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| 363 | abac_stack_t *id_list = abac_stack_new(); |
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| 364 | |
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| 365 | int cnt=0; |
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| 366 | if(id_hashkeyid_list) { |
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| 367 | char *keyid; |
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| 368 | abac_id_credential_t *id; |
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| 369 | abac_list_foreach(id_hashkeyid_list, keyid, |
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| 370 | id=abac_id_credential_lookup(keyid); |
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| 371 | abac_stack_push(id_list, id); |
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| 372 | cnt++; |
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| 373 | ); |
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| 374 | } |
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| 375 | if(debug) printf("abac_verifier_dump_principals: %d\n",cnt); |
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| 376 | return id_list; |
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| 377 | } |
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| 378 | |
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[8bd77b5] | 379 | |
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| 380 | static void check_id_cred(abac_id_credential_t *id_cred) |
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| 381 | { |
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| 382 | if(id_cred) { |
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| 383 | printf("checking on this id_cred location %d\n", (int)id_cred); |
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| 384 | printf(" --> sha is (%s)\n", abac_id_keyid(id_cred->id)); |
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| 385 | printf(" --> cn is (%s)\n", abac_id_cn(id_cred->id)); |
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[202a7f9] | 386 | } |
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| 387 | } |
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| 388 | |
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| 389 | /** |
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| 390 | * Load an attribute cert as string. |
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| 391 | * have minimum syntax & validity check |
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| 392 | */ |
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| 393 | static int _load_attribute_string(char* attr_string) { |
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| 394 | printf("NOT implemented yet!!!"); |
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| 395 | return ABAC_CERT_INVALID; |
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| 396 | } |
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| 397 | |
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[e898049] | 398 | /** |
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| 399 | * Load an ID cert from a file. |
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| 400 | */ |
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[5110d42] | 401 | int abac_verifier_load_id_file_key_file(char *filename, char *keyfilename, abac_id_credential_t **id_cred_ret) { |
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[8bd77b5] | 402 | abac_id_t *id=NULL; |
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[61278ec] | 403 | if (lib == NULL) |
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| 404 | errx(1, "looks like you didn't call libabac_init() (lib is NULL)"); |
---|
| 405 | |
---|
[d037f54] | 406 | if(debug) printf("loading id file... %s\n", filename); |
---|
| 407 | |
---|
[137b55f] | 408 | // load the cert, with public key |
---|
[e898049] | 409 | certificate_t *cert = lib->creds->create( |
---|
| 410 | lib->creds, CRED_CERTIFICATE, CERT_X509, |
---|
| 411 | BUILD_FROM_FILE, filename, |
---|
| 412 | BUILD_X509_FLAG, X509_AA, // attribute authority, dumb |
---|
| 413 | BUILD_END |
---|
| 414 | ); |
---|
[d037f54] | 415 | |
---|
[e898049] | 416 | if (cert == NULL) |
---|
[0779c99] | 417 | return ABAC_CERT_INVALID; |
---|
[d037f54] | 418 | |
---|
| 419 | int rc=_load_id(&id,cert,id_cred_ret); |
---|
[440ba20] | 420 | if(rc==ABAC_CERT_EXISTS) { |
---|
| 421 | if(debug) printf("abac_verifier_load_id_files: id already exists\n"); |
---|
| 422 | return ABAC_CERT_SUCCESS; |
---|
| 423 | } |
---|
| 424 | |
---|
[d037f54] | 425 | /* try to load the private key if it is there */ |
---|
[2efdff5] | 426 | if((rc==ABAC_CERT_SUCCESS) && keyfilename!=NULL && file_exist(keyfilename)) { |
---|
[d037f54] | 427 | if(debug) printf("loading... %s\n", keyfilename); |
---|
[5110d42] | 428 | int keyrc=abac_id_load_privkey_file(id, keyfilename); |
---|
[d037f54] | 429 | if(debug) { |
---|
| 430 | if(keyrc == 1) printf("..load_id_file: load(%s) with a private key\n",filename); |
---|
| 431 | else printf("..load_id_file: load(%s) without a private key\n",filename); |
---|
| 432 | } |
---|
| 433 | } |
---|
[2efdff5] | 434 | return ABAC_CERT_SUCCESS; |
---|
[8bd77b5] | 435 | } |
---|
| 436 | |
---|
| 437 | /** |
---|
| 438 | * Load an ID cert from a abac_id_t |
---|
| 439 | */ |
---|
| 440 | int abac_verifier_load_id_id(abac_id_t *id, abac_id_credential_t **id_cred_ret) { |
---|
| 441 | certificate_t *cert = abac_id_cert(id); |
---|
| 442 | return _load_id(&id,cert,id_cred_ret); |
---|
[e898049] | 443 | } |
---|
| 444 | |
---|
[5110d42] | 445 | /** |
---|
| 446 | * Load an ID cert from a chunk. |
---|
| 447 | */ |
---|
| 448 | int abac_verifier_load_id_pem_chunk(chunk_t chunk, abac_id_credential_t **id_cred_ret) { |
---|
| 449 | abac_id_t *id=NULL; |
---|
| 450 | // load the cert |
---|
| 451 | certificate_t *cert = lib->creds->create( |
---|
| 452 | lib->creds, CRED_CERTIFICATE, CERT_X509, |
---|
| 453 | BUILD_BLOB_PEM, chunk, |
---|
| 454 | BUILD_X509_FLAG, X509_AA, // attribute authority, dumb |
---|
| 455 | BUILD_END |
---|
| 456 | ); |
---|
| 457 | if (cert == NULL) |
---|
| 458 | return ABAC_CERT_INVALID; |
---|
| 459 | return _load_id(&id, cert,id_cred_ret); |
---|
| 460 | } |
---|
[e898049] | 461 | /** |
---|
[9b43fc3] | 462 | * Load an ID cert from a chunk, Note, this only loads the id cert part |
---|
| 463 | * and so it is not suitable for creating an attribute credential with. |
---|
| 464 | * Only a complete id cert + privkey could create attribute credential. |
---|
[e898049] | 465 | */ |
---|
[8bd77b5] | 466 | int abac_verifier_load_id_chunk(chunk_t chunk, abac_id_credential_t **id_cred_ret) { |
---|
| 467 | abac_id_t *id=NULL; |
---|
[e898049] | 468 | // load the cert |
---|
| 469 | certificate_t *cert = lib->creds->create( |
---|
| 470 | lib->creds, CRED_CERTIFICATE, CERT_X509, |
---|
| 471 | BUILD_BLOB_ASN1_DER, chunk, |
---|
| 472 | BUILD_X509_FLAG, X509_AA, // attribute authority, dumb |
---|
| 473 | BUILD_END |
---|
| 474 | ); |
---|
| 475 | if (cert == NULL) |
---|
[0779c99] | 476 | return ABAC_CERT_INVALID; |
---|
[8bd77b5] | 477 | return _load_id(&id, cert,id_cred_ret); |
---|
[e898049] | 478 | } |
---|
| 479 | |
---|
[9b43fc3] | 480 | /** |
---|
| 481 | * Load an ID cert from a cert chunk and a privkey chunk, |
---|
| 482 | * this complete id cert + privkey could create attribute credential. |
---|
| 483 | */ |
---|
| 484 | int abac_verifier_load_id_privkey_chunk(chunk_t chunk, chunk_t privkey_chunk, |
---|
| 485 | abac_id_credential_t **id_cred_ret) { |
---|
| 486 | |
---|
| 487 | abac_id_t *id=NULL; |
---|
| 488 | // load the cert |
---|
| 489 | certificate_t *cert = lib->creds->create( |
---|
| 490 | lib->creds, CRED_CERTIFICATE, CERT_X509, |
---|
| 491 | BUILD_BLOB_ASN1_DER, chunk, |
---|
| 492 | BUILD_X509_FLAG, X509_AA, // attribute authority, dumb |
---|
| 493 | BUILD_END |
---|
| 494 | ); |
---|
| 495 | if (cert == NULL) |
---|
| 496 | return ABAC_CERT_INVALID; |
---|
| 497 | |
---|
| 498 | int rc=_load_id(&id, cert,id_cred_ret); |
---|
| 499 | if(rc == ABAC_CERT_SUCCESS) { |
---|
| 500 | rc=abac_id_load_privkey_chunk(id, privkey_chunk); |
---|
| 501 | } |
---|
| 502 | |
---|
| 503 | return rc; |
---|
| 504 | } |
---|
| 505 | |
---|
| 506 | |
---|
[2efdff5] | 507 | abac_id_t *abac_verifier_load_issuer(char *filename, char *keyfilename) |
---|
| 508 | { |
---|
| 509 | abac_id_credential_t *id_cred=NULL; |
---|
| 510 | int ret=abac_verifier_load_id_file_key_file(filename,keyfilename,&id_cred); |
---|
| 511 | if(ret !=ABAC_CERT_SUCCESS) |
---|
| 512 | return NULL; |
---|
| 513 | abac_id_t *issuer=abac_id_credential_id(id_cred); |
---|
| 514 | return issuer; |
---|
| 515 | } |
---|
| 516 | |
---|
[53e540d] | 517 | |
---|
[5110d42] | 518 | static int matchex(const char *subject, const char *pattern, int *so, int *eo) |
---|
| 519 | { |
---|
| 520 | int rc; // Returned code |
---|
| 521 | regmatch_t pmatch; |
---|
| 522 | |
---|
| 523 | regex_t re; // Compiled regexp pattern |
---|
| 524 | |
---|
| 525 | if (regcomp(&re, pattern, 0) != 0) return 0; |
---|
| 526 | |
---|
| 527 | rc = regexec(&re, subject, 1 , &pmatch, 0); |
---|
| 528 | regfree(&re); |
---|
| 529 | |
---|
| 530 | if (rc == REG_NOMATCH ) return 0; |
---|
| 531 | |
---|
| 532 | *so=pmatch.rm_so; |
---|
| 533 | *eo=pmatch.rm_eo; |
---|
| 534 | |
---|
| 535 | return 1; |
---|
| 536 | } |
---|
| 537 | |
---|
| 538 | |
---|
| 539 | |
---|
| 540 | static chunk_t _extract_chunk(char *data, char* startline, char* endline) |
---|
| 541 | { |
---|
| 542 | int found=0; |
---|
| 543 | int startos=0; |
---|
| 544 | int endos=0; |
---|
| 545 | regex_t re; |
---|
| 546 | regmatch_t pm; |
---|
| 547 | int rc; |
---|
| 548 | |
---|
| 549 | int st; |
---|
| 550 | int et; |
---|
| 551 | |
---|
| 552 | rc=matchex(data, startline, &st, &et); |
---|
| 553 | if(rc==0) return chunk_empty; |
---|
| 554 | startos=st; |
---|
| 555 | |
---|
| 556 | rc=matchex(data, endline, &st, &et); |
---|
| 557 | if(rc==0) return chunk_empty; |
---|
| 558 | endos=et; |
---|
| 559 | |
---|
| 560 | int len=endos - startos; |
---|
| 561 | |
---|
| 562 | if(debug) printf("making a chunk of size (%d) from %d and %d\n",len, startos,endos); |
---|
| 563 | char *ptr=strndup(data+startos,len); |
---|
| 564 | |
---|
| 565 | chunk_t ret = { ptr, len }; |
---|
| 566 | return ret; |
---|
| 567 | } |
---|
| 568 | |
---|
| 569 | |
---|
| 570 | int abac_verifier_load_idkey_file(char *filename, abac_id_credential_t **id_cred_ret) |
---|
| 571 | { |
---|
| 572 | struct stat sb; |
---|
| 573 | int fd; |
---|
| 574 | int rc; |
---|
| 575 | |
---|
| 576 | fd = open(filename, O_RDONLY); |
---|
| 577 | if (fd == -1) { return 1; } |
---|
| 578 | if(stat(filename, &sb) == -1) { |
---|
| 579 | close(fd); |
---|
| 580 | return 1; |
---|
| 581 | } |
---|
| 582 | char* data = (char *)mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); |
---|
| 583 | if(data == MAP_FAILED) { |
---|
| 584 | close(fd); |
---|
| 585 | return 1; |
---|
| 586 | } |
---|
| 587 | close(fd); |
---|
| 588 | |
---|
| 589 | chunk_t key_pem_chunk=_extract_chunk(data, |
---|
| 590 | "-----BEGIN RSA PRIVATE KEY-----","-----END RSA PRIVATE KEY-----"); |
---|
| 591 | chunk_t cert_pem_chunk=_extract_chunk(data, |
---|
| 592 | "-----BEGIN CERTIFICATE-----","-----END CERTIFICATE-----"); |
---|
| 593 | |
---|
| 594 | /* key=0, cert=0 */ |
---|
| 595 | if(key_pem_chunk.len==0 && cert_pem_chunk.len==0) { |
---|
| 596 | if(debug) printf("abac_verifier_load_idkey_file: no key or id in idkey_file\n"); |
---|
| 597 | goto error; |
---|
| 598 | } |
---|
| 599 | |
---|
| 600 | /* key=0, cert=1 */ |
---|
| 601 | if(key_pem_chunk.len==0) { |
---|
| 602 | if(debug) printf("abac_verifier_load_idkey_file: no key in idkey_file\n"); |
---|
| 603 | munmap(data, sb.st_size); |
---|
| 604 | chunk_free(&key_pem_chunk); |
---|
| 605 | return abac_verifier_load_id_file_key_file(filename,NULL,id_cred_ret); |
---|
| 606 | } |
---|
| 607 | |
---|
| 608 | /* key=1, cert=1 */ |
---|
| 609 | if(cert_pem_chunk.len!=0) { |
---|
| 610 | if(debug) { |
---|
| 611 | printf("loading cert pem chunk %d\n", cert_pem_chunk.len); |
---|
| 612 | printf("(%s)\n",cert_pem_chunk.ptr); |
---|
| 613 | } |
---|
| 614 | rc=abac_verifier_load_id_pem_chunk(cert_pem_chunk, id_cred_ret); |
---|
| 615 | if(rc != 0) { |
---|
| 616 | if(debug) printf("abac_verifier_load_idkey_file: fail to load the id\n"); |
---|
| 617 | goto error; |
---|
| 618 | } |
---|
| 619 | /* key=1, cert=0 */ |
---|
| 620 | } else { |
---|
| 621 | if(debug) printf("abac_verifier_load_idkey_file: there is no id info in there\n"); |
---|
| 622 | goto error; |
---|
| 623 | } |
---|
| 624 | |
---|
| 625 | /* handle the key_pem_chunk */ |
---|
| 626 | if(debug) { |
---|
| 627 | printf("loading key pem chunk %d\n", key_pem_chunk.len); |
---|
| 628 | printf("(%s)\n",key_pem_chunk.ptr); |
---|
| 629 | } |
---|
| 630 | abac_id_t *id=abac_id_credential_id(*id_cred_ret); |
---|
| 631 | rc=abac_id_load_privkey_chunk(id, key_pem_chunk); |
---|
| 632 | if(rc==0) { |
---|
| 633 | printf("abac_verifier_load_idkey_file:failed to load priv key!!!\n"); |
---|
| 634 | goto error; |
---|
| 635 | } |
---|
| 636 | |
---|
| 637 | munmap(data, sb.st_size); |
---|
| 638 | return 0; |
---|
| 639 | |
---|
| 640 | error: |
---|
| 641 | munmap(data, sb.st_size); |
---|
| 642 | return 1; |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | |
---|
| 646 | |
---|
[da5afdf] | 647 | void abac_print_clauses(abac_list_t *clauses, FILE *fp) |
---|
[202a7f9] | 648 | { |
---|
| 649 | if (clauses != NULL) { |
---|
| 650 | char *cur; |
---|
[7b548fa] | 651 | printf("total-- %d clauses\n", abac_list_size(clauses)); |
---|
[202a7f9] | 652 | abac_list_foreach(clauses, cur, |
---|
[da5afdf] | 653 | if(cur) { |
---|
| 654 | if(fp) |
---|
| 655 | fprintf (fp,"a clause, %d(%s)\n", (int)cur,cur); |
---|
| 656 | else printf ("a clause, %d(%s)\n", (int)cur,cur); |
---|
| 657 | } |
---|
[202a7f9] | 658 | ); |
---|
| 659 | } |
---|
| 660 | } |
---|
| 661 | |
---|
[8bd77b5] | 662 | abac_id_credential_t *abac_id_credential_dup(abac_id_credential_t *ptr) { |
---|
| 663 | assert(ptr != NULL); |
---|
| 664 | abac_id_dup(ptr->id); |
---|
| 665 | return ptr; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | abac_id_t *abac_id_credential_id(abac_id_credential_t *ptr) |
---|
[da5afdf] | 669 | { |
---|
[8bd77b5] | 670 | assert(ptr); |
---|
| 671 | return ptr->id; |
---|
| 672 | } |
---|
[53e540d] | 673 | |
---|
| 674 | |
---|
[8bd77b5] | 675 | abac_id_credential_t *abac_id_credential_lookup(char *pname) |
---|
| 676 | { |
---|
| 677 | abac_id_credential_t *id_cred=NULL; |
---|
| 678 | HASH_FIND_STR(id_creds, pname, id_cred); |
---|
[5110d42] | 679 | if(id_cred != NULL) |
---|
| 680 | return abac_id_credential_dup(id_cred); |
---|
| 681 | else return NULL; |
---|
[8bd77b5] | 682 | } |
---|
[7727f26] | 683 | |
---|
[8bd77b5] | 684 | void abac_id_credential_free(abac_id_credential_t *ptr) |
---|
| 685 | { |
---|
| 686 | if (ptr == NULL) |
---|
| 687 | return; |
---|
[53e540d] | 688 | |
---|
[5110d42] | 689 | if(debug) |
---|
| 690 | printf("abac_id_credential_free:freeing (%s)\n", abac_id_name(ptr->id)); |
---|
| 691 | |
---|
[8bd77b5] | 692 | // this is very hacky... |
---|
| 693 | int last=abac_id_lastone(ptr->id); |
---|
| 694 | if(!last) { |
---|
[5110d42] | 695 | if(debug) printf("abac_id_credential_free:not last one\n"); |
---|
[8bd77b5] | 696 | abac_id_free(ptr->id); |
---|
| 697 | } else { |
---|
[5110d42] | 698 | if(debug) printf("abac_id_credential_free: deleting id (%s)\n",abac_id_name(ptr->id)); |
---|
[8bd77b5] | 699 | free(ptr->hashkeyid); |
---|
| 700 | if(ptr->pl_clause) |
---|
| 701 | free(ptr->pl_clause); |
---|
| 702 | abac_id_free(ptr->id); |
---|
| 703 | HASH_DEL(id_creds, ptr); |
---|
| 704 | free(ptr); |
---|
[53e540d] | 705 | } |
---|
[da5afdf] | 706 | } |
---|
| 707 | |
---|
[8bd77b5] | 708 | /****************************************************************************/ |
---|
| 709 | |
---|
[5d06689] | 710 | static int _verify_valid_credential_string(certificate_t *cert, |
---|
[da5afdf] | 711 | abac_credential_t **cred_ret, char *encoded_attr_string) |
---|
| 712 | { |
---|
[8bd77b5] | 713 | abac_aspect_t *head_aspect = NULL; |
---|
| 714 | abac_aspect_t *tail_aspect = NULL; |
---|
[da5afdf] | 715 | abac_list_t *clauses=NULL; |
---|
[8bd77b5] | 716 | abac_id_credential_t *id_cred; |
---|
| 717 | abac_id_t *issuer_id; |
---|
[da5afdf] | 718 | int ret, i; |
---|
| 719 | |
---|
| 720 | // get the attr |
---|
[8bd77b5] | 721 | head_aspect = abac_yy_get_rule_head_aspect(); |
---|
| 722 | tail_aspect = abac_yy_get_rule_tail_aspect(); |
---|
[b5a3da4] | 723 | clauses = abac_yy_get_rule_clauses(); |
---|
[53e540d] | 724 | |
---|
| 725 | // get the issuer based on keyid |
---|
[8bd77b5] | 726 | char *principalname = abac_aspect_principal_principalname(head_aspect); |
---|
| 727 | if(debug) printf("LOOKING for %s\n", principalname); |
---|
| 728 | |
---|
| 729 | HASH_FIND_STR(id_creds, principalname, id_cred); |
---|
[d037f54] | 730 | if(id_cred == NULL) { |
---|
| 731 | ret = ABAC_CERT_MISSING_ISSUER; |
---|
| 732 | if(debug) |
---|
| 733 | printf("can not find %s in id_creds\n", principalname); |
---|
| 734 | goto error; |
---|
| 735 | } |
---|
[8bd77b5] | 736 | issuer_id=id_cred->id; |
---|
| 737 | if (issuer_id == NULL) { |
---|
[53e540d] | 738 | ret = ABAC_CERT_MISSING_ISSUER; |
---|
[8bd77b5] | 739 | if(debug) |
---|
| 740 | printf("can not find %s in id_creds\n", principalname); |
---|
[53e540d] | 741 | goto error; |
---|
| 742 | } |
---|
| 743 | |
---|
[8bd77b5] | 744 | |
---|
[53e540d] | 745 | // make sure the issuer's signed it |
---|
[8bd77b5] | 746 | ret = _verify_signature(abac_id_cert(issuer_id), cert); |
---|
[53e540d] | 747 | if (!ret) { |
---|
[b5a3da4] | 748 | abac_yy_set_error_code(ABAC_RT_CERT_BAD_SIG); |
---|
[5110d42] | 749 | ret=ABAC_CERT_BAD_SIG; |
---|
[53e540d] | 750 | goto error; |
---|
| 751 | } |
---|
| 752 | |
---|
[8bd77b5] | 753 | // at this point we know we have a good attribute cert baked it in |
---|
| 754 | abac_attribute_t *attr=abac_attribute_new(issuer_id, cert, cert->get_ref(cert)); |
---|
| 755 | abac_attribute_set_head(attr, head_aspect); |
---|
| 756 | abac_attribute_add_tail(attr, tail_aspect); |
---|
| 757 | |
---|
[53e540d] | 758 | abac_credential_t *cred = abac_xmalloc(sizeof(abac_credential_t)); |
---|
[8bd77b5] | 759 | cred->hashkeyid=abac_xstrdup(encoded_attr_string); |
---|
| 760 | cred->attr=attr; |
---|
| 761 | cred->pl_clauses = clauses; |
---|
[53e540d] | 762 | *cred_ret = cred; |
---|
| 763 | |
---|
| 764 | // success, add the key to the map of certificates |
---|
[8bd77b5] | 765 | HASH_ADD_KEYPTR(hh, attr_creds, cred->hashkeyid, strlen(cred->hashkeyid), cred); |
---|
[53e540d] | 766 | |
---|
[8bd77b5] | 767 | assert(attr_hashkeyid_list); |
---|
| 768 | abac_list_add(attr_hashkeyid_list, abac_xstrdup(cred->hashkeyid)); |
---|
[9b43fc3] | 769 | |
---|
| 770 | if(debug) |
---|
| 771 | printf("-->adding into attr_creds 2, (%s)..cnt(%d)\n", |
---|
| 772 | cred->hashkeyid, HASH_COUNT(attr_creds)); |
---|
| 773 | |
---|
[da5afdf] | 774 | return ABAC_CERT_SUCCESS; |
---|
| 775 | |
---|
| 776 | error: |
---|
[8bd77b5] | 777 | if (head_aspect) abac_aspect_free(head_aspect); |
---|
| 778 | if (tail_aspect) abac_aspect_free(tail_aspect); |
---|
[b5a3da4] | 779 | abac_yy_free_rule_clauses(); |
---|
[da5afdf] | 780 | |
---|
| 781 | return ret; |
---|
| 782 | } |
---|
[8bd77b5] | 783 | |
---|
[da5afdf] | 784 | /** |
---|
| 785 | * Load an attribute cert. |
---|
| 786 | * Returns true only if the certificate is valid and is issued by the proper |
---|
| 787 | * authority. |
---|
[5d06689] | 788 | * attribute string is parsed via yyparse call |
---|
[da5afdf] | 789 | */ |
---|
| 790 | static int _load_attribute_cert(certificate_t *cert, abac_credential_t **cred_ret) { |
---|
| 791 | ietf_attributes_t *attr_cert = NULL; |
---|
[8bd77b5] | 792 | abac_id_credential_t *issuer; |
---|
[da5afdf] | 793 | int ret, i; |
---|
| 794 | |
---|
| 795 | // get the attr |
---|
| 796 | ac_t *ac = (ac_t *)cert; |
---|
| 797 | attr_cert = ac->get_groups(ac); |
---|
| 798 | if (attr_cert == NULL) { |
---|
| 799 | ret = ABAC_CERT_INVALID; |
---|
| 800 | goto error; |
---|
| 801 | } |
---|
| 802 | |
---|
| 803 | char *encoded_attr_string=attr_cert->get_string(attr_cert); |
---|
| 804 | char *attr_string = abac_decode_string(encoded_attr_string); |
---|
| 805 | if(debug) |
---|
[669b481] | 806 | printf("string to be yyparse..(%d)(%s)\n",strlen(attr_string),attr_string); |
---|
[da5afdf] | 807 | |
---|
| 808 | if (attr_string == NULL) { |
---|
| 809 | ret = ABAC_CERT_INVALID; |
---|
| 810 | goto error; |
---|
| 811 | } |
---|
| 812 | |
---|
| 813 | /* call into yacc parser */ |
---|
| 814 | abac_reset_yyfptr(attr_string); |
---|
[b5a3da4] | 815 | abac_yy_init(); |
---|
[da5afdf] | 816 | int rc=yyparse(); |
---|
| 817 | if (rc) { |
---|
| 818 | ret = ABAC_CERT_INVALID; |
---|
| 819 | goto error; |
---|
| 820 | } |
---|
| 821 | |
---|
[5d06689] | 822 | ret=_verify_valid_credential_string(cert,cred_ret,encoded_attr_string); |
---|
[da5afdf] | 823 | |
---|
[5110d42] | 824 | if(ret != ABAC_CERT_SUCCESS) { |
---|
| 825 | panic("_load_attribute_cert: fail to process (%s)",encoded_attr_string); |
---|
| 826 | } |
---|
| 827 | |
---|
[53e540d] | 828 | // free up some crap |
---|
| 829 | attr_cert->destroy(attr_cert); |
---|
| 830 | |
---|
[5110d42] | 831 | return ret; |
---|
[53e540d] | 832 | |
---|
| 833 | error: |
---|
[202a7f9] | 834 | if (cert) cert->destroy(cert); |
---|
| 835 | if (attr_cert) attr_cert->destroy(attr_cert); |
---|
[0779c99] | 836 | return ret; |
---|
[5450aeb] | 837 | } |
---|
[5f99fbc] | 838 | |
---|
[8bd77b5] | 839 | /** |
---|
| 840 | * Load an attribute cert from a abac_attribute_t. |
---|
[5d06689] | 841 | * attr should be all checked out before arriving here |
---|
[8bd77b5] | 842 | */ |
---|
[5d06689] | 843 | int abac_verifier_load_attribute_cert_attribute(abac_attribute_t *ptr, abac_credential_t **cred_ret) { |
---|
| 844 | // get the attr |
---|
| 845 | abac_aspect_t *head=abac_attribute_head(ptr); |
---|
| 846 | abac_aspect_t *tail=abac_attribute_tail(ptr); |
---|
| 847 | |
---|
| 848 | // preprocess for constraint part |
---|
| 849 | preprocess_pl_head(head); |
---|
| 850 | preprocess_pl_tail(tail); |
---|
| 851 | |
---|
[9b43fc3] | 852 | /* setup the encoded attribute string */ |
---|
| 853 | char *encoded_attr_string=get_cred_encoding(ptr); |
---|
| 854 | generate_pl_set_abac_yyfptr_encoded(encoded_attr_string); |
---|
| 855 | /* collect up type clauses, constraint clauses and |
---|
[5d06689] | 856 | generate rule clauses */ |
---|
| 857 | abac_list_t *clauses=generate_pl_clauses(head,tail); |
---|
[9b43fc3] | 858 | |
---|
| 859 | abac_print_clauses(clauses,NULL); |
---|
[5d06689] | 860 | |
---|
| 861 | abac_credential_t *cred = abac_xmalloc(sizeof(abac_credential_t)); |
---|
| 862 | cred->hashkeyid=abac_xstrdup(encoded_attr_string); |
---|
| 863 | cred->attr=abac_attribute_dup(ptr); |
---|
| 864 | cred->pl_clauses = clauses; |
---|
| 865 | *cred_ret = cred; |
---|
| 866 | |
---|
| 867 | // success, add the key to the map of certificates |
---|
| 868 | HASH_ADD_KEYPTR(hh, attr_creds, cred->hashkeyid, strlen(cred->hashkeyid), cred); |
---|
| 869 | |
---|
| 870 | assert(attr_hashkeyid_list); |
---|
| 871 | abac_list_add(attr_hashkeyid_list, abac_xstrdup(cred->hashkeyid)); |
---|
[9b43fc3] | 872 | |
---|
| 873 | if(debug) |
---|
| 874 | printf("-->adding into attr_creds, (%s)..cnt(%d)\n", |
---|
| 875 | cred->hashkeyid, HASH_COUNT(attr_creds)); |
---|
[5d06689] | 876 | return ABAC_CERT_SUCCESS; |
---|
[8bd77b5] | 877 | } |
---|
| 878 | |
---|
[e898049] | 879 | /** |
---|
| 880 | * Load an attribute cert from a file. |
---|
| 881 | */ |
---|
[0779c99] | 882 | int abac_verifier_load_attribute_cert_file(char *filename, abac_credential_t **cred) { |
---|
[e898049] | 883 | // load the cert |
---|
[d037f54] | 884 | if(debug) printf("..loading attr file %s\n", filename); |
---|
[e898049] | 885 | certificate_t *cert = lib->creds->create( |
---|
| 886 | lib->creds, CRED_CERTIFICATE, CERT_X509_AC, |
---|
| 887 | BUILD_FROM_FILE, filename, |
---|
| 888 | BUILD_END |
---|
| 889 | ); |
---|
| 890 | if (cert == NULL) |
---|
[0779c99] | 891 | return ABAC_CERT_INVALID; |
---|
| 892 | return _load_attribute_cert(cert, cred); |
---|
[e898049] | 893 | } |
---|
| 894 | |
---|
| 895 | /** |
---|
| 896 | * Load an attribute cert from a chunk. |
---|
| 897 | */ |
---|
[0779c99] | 898 | int abac_verifier_load_attribute_cert_chunk(chunk_t chunk, abac_credential_t **cred) { |
---|
[e898049] | 899 | // load the cert |
---|
| 900 | certificate_t *cert = lib->creds->create( |
---|
| 901 | lib->creds, CRED_CERTIFICATE, CERT_X509_AC, |
---|
| 902 | BUILD_BLOB_ASN1_DER, chunk, |
---|
| 903 | BUILD_END |
---|
| 904 | ); |
---|
| 905 | if (cert == NULL) |
---|
[0779c99] | 906 | return ABAC_CERT_INVALID; |
---|
[9b43fc3] | 907 | |
---|
[0779c99] | 908 | return _load_attribute_cert(cert, cred); |
---|
[e898049] | 909 | } |
---|
| 910 | |
---|
[85cdf53] | 911 | /** |
---|
| 912 | * Return the encoding of the attribute cert. |
---|
| 913 | */ |
---|
[401a054] | 914 | abac_chunk_t abac_credential_attribute_cert(abac_credential_t *cred) { |
---|
[8bd77b5] | 915 | abac_attribute_t *ptr=cred->attr; |
---|
| 916 | certificate_t *cert=abac_attribute_cert(ptr); |
---|
[137b55f] | 917 | chunk_t encoding = chunk_empty; |
---|
| 918 | int rc=cert->get_encoding(cert,CERT_ASN1_DER,&encoding); |
---|
[9efbfbf] | 919 | abac_chunk_t ret = { encoding.ptr, encoding.len }; |
---|
| 920 | return ret; |
---|
[85cdf53] | 921 | } |
---|
| 922 | |
---|
| 923 | /** |
---|
| 924 | * Return the encoding of the issuer cert. |
---|
| 925 | */ |
---|
[401a054] | 926 | abac_chunk_t abac_credential_issuer_cert(abac_credential_t *cred) { |
---|
[8bd77b5] | 927 | certificate_t *issuer_cert=abac_attribute_issuer_cert(cred->attr); |
---|
| 928 | assert(issuer_cert); |
---|
[137b55f] | 929 | chunk_t encoding = chunk_empty; |
---|
| 930 | // XXX MEI, not sure ?? |
---|
| 931 | int rc=issuer_cert->get_encoding(issuer_cert,CERT_ASN1_DER,&encoding); |
---|
[9efbfbf] | 932 | abac_chunk_t ret = { encoding.ptr, encoding.len }; |
---|
| 933 | return ret; |
---|
[85cdf53] | 934 | } |
---|
[186cb75] | 935 | |
---|
[53e540d] | 936 | /** |
---|
| 937 | * Return the clause of the cert |
---|
| 938 | */ |
---|
[202a7f9] | 939 | abac_list_t *abac_credential_clauses(abac_credential_t *cred) { |
---|
[8bd77b5] | 940 | return cred->pl_clauses; |
---|
[53e540d] | 941 | } |
---|
| 942 | |
---|
[8bd77b5] | 943 | abac_attribute_t *abac_credential_attribute(abac_credential_t *cred) { |
---|
| 944 | assert(cred); |
---|
| 945 | return cred->attr; |
---|
| 946 | } |
---|
[202a7f9] | 947 | |
---|
[186cb75] | 948 | /** |
---|
[fbb591e] | 949 | * Increase the ref count of a credential. |
---|
[186cb75] | 950 | */ |
---|
[401a054] | 951 | abac_credential_t *abac_credential_dup(abac_credential_t *cred) { |
---|
| 952 | assert(cred != NULL); |
---|
[186cb75] | 953 | |
---|
[8bd77b5] | 954 | abac_attribute_dup(cred->attr); |
---|
[fbb591e] | 955 | return cred; |
---|
[186cb75] | 956 | } |
---|
| 957 | |
---|
[53e540d] | 958 | /** |
---|
| 959 | * lookup for a credential. |
---|
| 960 | */ |
---|
[202a7f9] | 961 | abac_credential_t *abac_credential_lookup(char* cred_string) |
---|
| 962 | { |
---|
| 963 | if(debug) |
---|
[8bd77b5] | 964 | printf("abac_credential_lookup: looking for (%s)\n", cred_string); |
---|
| 965 | abac_credential_t *attr_cred; |
---|
[9b43fc3] | 966 | |
---|
[8bd77b5] | 967 | HASH_FIND_STR(attr_creds, cred_string, attr_cred); |
---|
| 968 | if (attr_cred == NULL) { |
---|
[202a7f9] | 969 | if(debug) printf("DEBUG:NOT FOUND..\n"); |
---|
[53e540d] | 970 | return NULL; |
---|
| 971 | } |
---|
[8bd77b5] | 972 | abac_credential_t *rt=abac_credential_dup(attr_cred); |
---|
| 973 | if(debug) printf("DEBUG:FOUND.. (%d) returning, (%d)\n", (int)attr_cred, (int) rt); |
---|
| 974 | return rt; |
---|
[53e540d] | 975 | } |
---|
| 976 | |
---|
[186cb75] | 977 | /** |
---|
[fbb591e] | 978 | * Decrease the reference count of a credential, freeing it when it reaches 0. |
---|
[186cb75] | 979 | */ |
---|
[202a7f9] | 980 | void abac_credential_free(abac_credential_t *cred) |
---|
| 981 | { |
---|
| 982 | if(debug) |
---|
[8bd77b5] | 983 | printf("abac_credential_free:freeing cred(%d)clause(%d)\n", (int)cred, (int)cred->pl_clauses); |
---|
[202a7f9] | 984 | |
---|
[401a054] | 985 | if (cred == NULL) |
---|
[186cb75] | 986 | return; |
---|
| 987 | |
---|
[8bd77b5] | 988 | // this is very hacky... |
---|
| 989 | int last=abac_attribute_lastone(cred->attr); |
---|
| 990 | if(!last) { |
---|
| 991 | abac_attribute_free(cred->attr); |
---|
[da5afdf] | 992 | } else { |
---|
[8bd77b5] | 993 | free(cred->hashkeyid); |
---|
| 994 | char *cur=NULL; |
---|
| 995 | abac_list_foreach(cred->pl_clauses, cur, |
---|
| 996 | free(cur); |
---|
| 997 | ); |
---|
| 998 | abac_attribute_free(cred->attr); |
---|
| 999 | HASH_DEL(attr_creds, cred); |
---|
| 1000 | free(cred); |
---|
[da5afdf] | 1001 | } |
---|
[186cb75] | 1002 | } |
---|
[53e540d] | 1003 | |
---|
[8bd77b5] | 1004 | char *abac_id_clause(abac_id_credential_t *id_cred) |
---|
[202a7f9] | 1005 | { |
---|
[8bd77b5] | 1006 | if(id_cred) |
---|
| 1007 | return id_cred->pl_clause; |
---|
[202a7f9] | 1008 | return NULL; |
---|
| 1009 | } |
---|
| 1010 | |
---|
[53e540d] | 1011 | /* retrieve the cn that is associated with this sha_string */ |
---|
[5110d42] | 1012 | char *abac_cn_with_sha(char *sha_string) |
---|
| 1013 | { |
---|
[53e540d] | 1014 | // get the issuer based on keyid |
---|
[8bd77b5] | 1015 | abac_id_credential_t *id_cred; |
---|
| 1016 | HASH_FIND_STR(id_creds, sha_string, id_cred); |
---|
| 1017 | if (id_cred == NULL) { |
---|
[53e540d] | 1018 | return NULL; |
---|
| 1019 | } |
---|
[202a7f9] | 1020 | if(debug) |
---|
[8bd77b5] | 1021 | check_id_cred(id_cred); |
---|
| 1022 | return abac_id_cn(id_cred->id); |
---|
[53e540d] | 1023 | } |
---|
| 1024 | |
---|
[8bd77b5] | 1025 | char *abac_idtype_with_sha(char* sha_string) |
---|
| 1026 | { |
---|
| 1027 | // get the issuer based on keyid |
---|
| 1028 | abac_id_credential_t *id_cred; |
---|
| 1029 | HASH_FIND_STR(id_creds, sha_string, id_cred); |
---|
| 1030 | if (id_cred == NULL) { |
---|
| 1031 | return NULL; |
---|
| 1032 | } |
---|
| 1033 | int idtype=abac_id_idtype(id_cred->id); |
---|
| 1034 | |
---|
| 1035 | return abac_idtype_string(idtype); |
---|
[923b4dd] | 1036 | } |
---|
| 1037 | |
---|
[8bd77b5] | 1038 | abac_aspect_t *abac_credential_head(abac_credential_t *cred) { |
---|
| 1039 | return abac_attribute_head(cred->attr); |
---|
[923b4dd] | 1040 | } |
---|
| 1041 | |
---|
[8bd77b5] | 1042 | abac_aspect_t *abac_credential_tail(abac_credential_t *cred) { |
---|
| 1043 | return abac_attribute_tail(cred->attr); |
---|
[923b4dd] | 1044 | } |
---|
| 1045 | |
---|
| 1046 | |
---|