[2e9455f] | 1 | /** |
---|
| 2 | ** abac_context.c |
---|
| 3 | **/ |
---|
| 4 | |
---|
| 5 | #include <assert.h> |
---|
| 6 | #include <err.h> |
---|
| 7 | #include <glob.h> |
---|
| 8 | #include <stdio.h> |
---|
| 9 | #include <regex.h> |
---|
| 10 | #include <sys/mman.h> |
---|
| 11 | #include <fcntl.h> |
---|
| 12 | #include <sys/types.h> |
---|
| 13 | #include <sys/stat.h> |
---|
| 14 | #include <unistd.h> |
---|
| 15 | |
---|
| 16 | #include <chunk.h> |
---|
| 17 | |
---|
| 18 | #include "abac_util.h" |
---|
| 19 | |
---|
| 20 | #include "abac_context.h" |
---|
| 21 | #include "abac_list.h" |
---|
| 22 | #include "abac_stack.h" |
---|
| 23 | #include "abac_pl_yap.h" |
---|
| 24 | #include "abac_pl_yy.h" |
---|
| 25 | #include "uthash.h" |
---|
| 26 | #include "abac_id.h" |
---|
| 27 | #include "abac_verifier.h" |
---|
| 28 | #include "abac_id.h" |
---|
| 29 | #include "abac_pl_gen.h" |
---|
| 30 | #include "abac_attribute.h" |
---|
| 31 | #include "abac_aspect.h" |
---|
| 32 | #include "abac_m64.h" |
---|
| 33 | #include "rt2_yy.h" |
---|
| 34 | #include "abac_util_cert.h" |
---|
| 35 | |
---|
| 36 | static int debug=0; |
---|
| 37 | |
---|
| 38 | #define KEY_PAT "/*_private.{der,pem}" |
---|
| 39 | #define ID_PAT "/*_ID.{der,pem}" |
---|
| 40 | #define ATTR_PAT "/*_attr.der" |
---|
| 41 | #define IDKEY_PAT "/*_IDKEY.{der,pem}" |
---|
| 42 | |
---|
| 43 | struct _abac_context_t { |
---|
| 44 | char *namespace; |
---|
| 45 | abac_pl_t *pl; /* prolog query structure */ |
---|
| 46 | |
---|
| 47 | abac_list_t *context_pl_clauses; |
---|
| 48 | |
---|
| 49 | /* linked list of all the ids's hashkeyid */ |
---|
| 50 | abac_list_t *context_id_hashkeyid_list; |
---|
| 51 | |
---|
| 52 | /* linked list of all the attr's hashkeyid */ |
---|
| 53 | abac_list_t *context_attr_hashkeyid_list; |
---|
| 54 | }; |
---|
| 55 | |
---|
| 56 | /* local */ |
---|
| 57 | int abac_context_load_id_id(abac_context_t *ctxt,abac_id_t *id); |
---|
| 58 | static chunk_t _extract_chunk(char *data, char* startline, char* endline); |
---|
| 59 | int abac_context_load_attribute_credential(abac_context_t *, abac_attribute_t *, abac_credential_t *); |
---|
| 60 | /****************************************************************/ |
---|
| 61 | /** |
---|
| 62 | * Create a new abac context. |
---|
| 63 | */ |
---|
| 64 | abac_context_t *abac_context_new(void) |
---|
| 65 | { |
---|
| 66 | libabac_init(); |
---|
| 67 | |
---|
| 68 | DEBUG_PRINTF("creating a new context... \n"); |
---|
| 69 | |
---|
| 70 | abac_context_t *ctxt = abac_xmalloc(sizeof(abac_context_t)); |
---|
| 71 | ctxt->namespace=abac_verifier_session_next_namespace(); |
---|
| 72 | ctxt->pl = abac_pl_new(ctxt); |
---|
| 73 | ctxt->context_attr_hashkeyid_list = abac_list_new(); |
---|
| 74 | ctxt->context_id_hashkeyid_list = abac_list_new(); |
---|
| 75 | ctxt->context_pl_clauses = abac_list_new(); |
---|
| 76 | abac_verifier_session_add_context(ctxt); |
---|
| 77 | return ctxt; |
---|
| 78 | } |
---|
| 79 | |
---|
| 80 | /* create a new context with a specific namespace */ |
---|
| 81 | abac_context_t *abac_context_named_new(char *namespace) |
---|
| 82 | { |
---|
| 83 | assert(namespace!=NULL); |
---|
| 84 | libabac_init(); |
---|
| 85 | |
---|
| 86 | abac_context_t *ctxt = abac_xmalloc(sizeof(abac_context_t)); |
---|
| 87 | ctxt->namespace=abac_xstrdup(namespace); |
---|
| 88 | ctxt->pl = abac_pl_new(ctxt); |
---|
| 89 | ctxt->context_attr_hashkeyid_list = abac_list_new(); |
---|
| 90 | ctxt->context_id_hashkeyid_list = abac_list_new(); |
---|
| 91 | ctxt->context_pl_clauses = abac_list_new(); |
---|
| 92 | abac_verifier_session_add_context(ctxt); |
---|
| 93 | return ctxt; |
---|
| 94 | } |
---|
| 95 | |
---|
| 96 | char *abac_context_namespace(abac_context_t *ctxt) |
---|
| 97 | { |
---|
| 98 | assert(ctxt!=NULL); |
---|
| 99 | return abac_xstrdup(ctxt->namespace); |
---|
| 100 | } |
---|
| 101 | |
---|
| 102 | /** |
---|
| 103 | * Deep copy an abac context. -- |
---|
| 104 | */ |
---|
| 105 | abac_context_t *abac_context_dup(abac_context_t *ctxt) |
---|
| 106 | { |
---|
| 107 | assert(ctxt!=NULL); |
---|
| 108 | abac_context_t *dup = abac_xmalloc(sizeof(abac_context_t)); |
---|
| 109 | dup->namespace=abac_verifier_session_next_namespace(); |
---|
| 110 | dup->pl = abac_pl_new(dup); |
---|
| 111 | |
---|
| 112 | dup->context_attr_hashkeyid_list = abac_list_new(); |
---|
| 113 | dup->context_id_hashkeyid_list = abac_list_new(); |
---|
| 114 | dup->context_pl_clauses = abac_list_new(); |
---|
| 115 | |
---|
| 116 | /* copy over and build up the prolog */ |
---|
| 117 | if(ctxt->context_id_hashkeyid_list) { |
---|
| 118 | abac_id_credential_t *id_cred; |
---|
| 119 | abac_id_t *id; |
---|
| 120 | char *cur; |
---|
| 121 | abac_list_foreach(ctxt->context_id_hashkeyid_list, cur, |
---|
| 122 | if(cur) { |
---|
| 123 | /* id_cred=abac_check_id_cred(cur); */ |
---|
| 124 | id_cred=abac_id_credential_lookup(cur); |
---|
| 125 | id=abac_id_credential_id(id_cred); |
---|
| 126 | assert(id!=NULL); |
---|
| 127 | /* id=abac_id_dup(id); */ |
---|
| 128 | abac_context_load_id_id(dup,id); |
---|
| 129 | } |
---|
| 130 | ); |
---|
| 131 | } |
---|
| 132 | if(ctxt->context_attr_hashkeyid_list) { |
---|
| 133 | abac_credential_t *attr_cred; |
---|
| 134 | abac_attribute_t *attr; |
---|
| 135 | char *cur; |
---|
| 136 | int sz=abac_list_size(ctxt->context_attr_hashkeyid_list); |
---|
| 137 | abac_list_foreach(ctxt->context_attr_hashkeyid_list, cur, |
---|
| 138 | if(cur) { /* cur is the hash key */ |
---|
| 139 | /* attr_cred=abac_check_cred(cur); */ |
---|
| 140 | attr_cred=abac_credential_lookup(cur); |
---|
| 141 | assert(attr_cred); |
---|
| 142 | attr=abac_credential_attribute(attr_cred); |
---|
| 143 | assert(attr); |
---|
| 144 | /* attr=abac_attribute_dup(attr); |
---|
| 145 | abac_context_load_attribute_credential(dup,attr,attr_cred); |
---|
| 146 | */ |
---|
| 147 | abac_context_load_attribute_attribute(dup,attr); |
---|
| 148 | } |
---|
| 149 | ); |
---|
| 150 | } |
---|
| 151 | abac_verifier_session_add_context(dup); |
---|
| 152 | return dup; |
---|
| 153 | } |
---|
| 154 | |
---|
| 155 | /**************************************************************/ |
---|
| 156 | abac_id_credential_t *abac_context_add_id_credential(abac_context_t *ctxt, abac_id_t *a_id) |
---|
| 157 | { |
---|
| 158 | char *cn=abac_id_cn(a_id); |
---|
| 159 | char *keyid=abac_id_keyid(a_id); |
---|
| 160 | |
---|
| 161 | /* see if it already exist */ |
---|
| 162 | abac_id_credential_t *id_cred; |
---|
| 163 | id_cred=abac_id_credential_lookup(keyid); |
---|
| 164 | |
---|
| 165 | /* add to master list if new */ |
---|
| 166 | if(id_cred == NULL) { |
---|
| 167 | id_cred=abac_id_credential_new(a_id); |
---|
| 168 | abac_add_id_cred(id_cred); |
---|
| 169 | } else { /* increment the reference count */ |
---|
| 170 | id_cred=abac_id_credential_dup(id_cred); |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | DEBUG_PRINTF("abac_context_add_id_credential, cn(%s)keyid(%s)\n",cn,keyid); |
---|
| 174 | /* special handling here */ |
---|
| 175 | char *tmp; |
---|
| 176 | if(USE("ABAC_CN")) { |
---|
| 177 | tmp=generate_pl_type_clause(ctxt, cn, abac_id_idtype(a_id)); |
---|
| 178 | } else { |
---|
| 179 | tmp=generate_pl_type_clause(ctxt, prologIt(keyid), abac_id_idtype(a_id)); |
---|
| 180 | } |
---|
| 181 | abac_list_add(ctxt->context_pl_clauses,tmp); |
---|
| 182 | |
---|
| 183 | /* insert into db */ |
---|
| 184 | int rc=abac_pl_add_type_credential(tmp); |
---|
| 185 | |
---|
| 186 | /* add to local hash list */ |
---|
| 187 | abac_list_add(ctxt->context_id_hashkeyid_list, |
---|
| 188 | abac_xstrdup(abac_id_credential_hashkey(id_cred))); |
---|
| 189 | |
---|
| 190 | return id_cred; |
---|
| 191 | } |
---|
| 192 | |
---|
| 193 | /* have to find the last cn |
---|
| 194 | CN=test/emailAddress=abac.isi.edu, CN=12345678 |
---|
| 195 | CN=client |
---|
| 196 | ..CN=255a03f3-ed30/emailAddress=.. |
---|
| 197 | */ |
---|
| 198 | static char* _extract_cn(char *string) |
---|
| 199 | { |
---|
| 200 | /* find the first CN= */ |
---|
| 201 | char *ptr=strstr(string,"CN="); |
---|
| 202 | if(ptr == NULL) return NULL; |
---|
| 203 | |
---|
| 204 | /* look for last CN= */ |
---|
| 205 | while(1) { |
---|
| 206 | char *tptr=ptr+3; |
---|
| 207 | char *p=strstr(tptr,"CN="); |
---|
| 208 | if(p) ptr=p; |
---|
| 209 | else break; |
---|
| 210 | } |
---|
| 211 | |
---|
| 212 | /* remove the possible additional stuff */ |
---|
| 213 | char *cn=abac_xstrdup(ptr); /* it would get write over */ |
---|
| 214 | char *nptr=strtok(cn,"/"); |
---|
| 215 | char *pcn=abac_xmalloc(sizeof(char) * strlen(nptr)); |
---|
| 216 | pcn[0]='p'; |
---|
| 217 | /* special case.. replace empty space with _ */ |
---|
| 218 | int i=strlen(nptr); |
---|
| 219 | while(i--) |
---|
| 220 | if(nptr[i]==' ') nptr[i]='_'; |
---|
| 221 | sscanf(nptr,"CN=%s", &pcn[1]); |
---|
| 222 | free(cn); |
---|
| 223 | return pcn; |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | // convert a chunk to a lowercase binary string |
---|
| 227 | // malloc's the string |
---|
| 228 | static char *_chunk_to_string(chunk_t chunk) { |
---|
| 229 | int i; |
---|
| 230 | |
---|
| 231 | char *ret = abac_xmalloc(chunk.len * 2 + 1); |
---|
| 232 | |
---|
| 233 | for (i = 0; i < chunk.len; ++i) |
---|
| 234 | sprintf(ret + 2 * i, "%02x", chunk.ptr[i]); |
---|
| 235 | |
---|
| 236 | return ret; |
---|
| 237 | } |
---|
| 238 | |
---|
| 239 | // verify that cert is still valid |
---|
| 240 | static int _verify_validity(certificate_t *cert) { |
---|
| 241 | if (cert->get_validity(cert, NULL, NULL, NULL)) |
---|
| 242 | return 1; |
---|
| 243 | return 0; |
---|
| 244 | } |
---|
| 245 | |
---|
| 246 | /** |
---|
| 247 | * Load an ID |
---|
| 248 | */ |
---|
| 249 | static int _load_id(abac_context_t *ctxt, abac_id_t **a_id,certificate_t *cert) |
---|
| 250 | { |
---|
| 251 | int ret; |
---|
| 252 | abac_id_credential_t *id_cred = NULL; |
---|
| 253 | |
---|
| 254 | assert(cert != NULL); |
---|
| 255 | |
---|
| 256 | // get the key ID, add p to keyid SHA here */ |
---|
| 257 | char *keyid =cert_get_keyid(cert); |
---|
| 258 | |
---|
| 259 | /* Mike said this is the way it is */ |
---|
| 260 | char *str=NULL; |
---|
| 261 | int rv = asprintf(&str, "%Y", cert->get_issuer(cert)); |
---|
| 262 | |
---|
| 263 | /* add p to cn name here, if there is no useable one |
---|
| 264 | reuse keyid */ |
---|
| 265 | char *cn=_extract_cn(str); |
---|
| 266 | if(cn == NULL) { |
---|
| 267 | DEBUG_PRINTF("DEBUG:did not find usable cn, reuse keyid\n"); |
---|
| 268 | cn=abac_xstrdup(keyid); |
---|
| 269 | } |
---|
| 270 | |
---|
| 271 | DEBUG_PRINTF("DEBUG:keyid %s \n", keyid); |
---|
| 272 | DEBUG_PRINTF("DEBUG:issuer '%s' \n", str); |
---|
| 273 | DEBUG_PRINTF("DEBUG:cn %s \n", cn); |
---|
| 274 | free(str); |
---|
| 275 | |
---|
| 276 | // validate validity |
---|
| 277 | ret = _verify_validity(cert); |
---|
| 278 | if (!ret) { |
---|
| 279 | ret = ABAC_CERT_INVALID; |
---|
| 280 | goto error; |
---|
| 281 | } |
---|
| 282 | |
---|
| 283 | // validate sig |
---|
| 284 | ret = verify_signature(cert, cert); |
---|
| 285 | if (!ret) { |
---|
| 286 | /* well.. this is not a self signed cert, don't fault it anymore */ |
---|
| 287 | DEBUG_PRINTF("This is not a self-signed cert \n"); |
---|
| 288 | } else { |
---|
| 289 | DEBUG_PRINTF("This is a self-signed cert \n"); |
---|
| 290 | } |
---|
| 291 | |
---|
| 292 | // if we already have this cert in the context, 'error' with success |
---|
| 293 | id_cred=abac_context_id_credential_lookup(ctxt, keyid); |
---|
| 294 | if (id_cred != NULL) { |
---|
| 295 | DEBUG_PRINTF("existing cert \n"); |
---|
| 296 | /* needs to increment the ref count */ |
---|
| 297 | abac_id_credential_dup(id_cred); |
---|
| 298 | ret = ABAC_CERT_EXISTS; |
---|
| 299 | goto error; |
---|
| 300 | } else { |
---|
| 301 | // if we don't have it in context but in session, then |
---|
| 302 | // we need to insert into the local context |
---|
| 303 | abac_id_credential_t *icred=abac_id_credential_lookup(keyid); |
---|
| 304 | if(icred!=NULL) { |
---|
| 305 | *a_id=abac_id_credential_id(icred); |
---|
| 306 | DEBUG_PRINTF("_load_id:already exists in session.(%s)\n",abac_id_cn(*a_id)); |
---|
| 307 | } else { |
---|
| 308 | // all else fail.. insert as a new id |
---|
| 309 | if(*a_id==NULL) *a_id=abac_id_keyid_new(keyid,cn,cert); |
---|
| 310 | } |
---|
| 311 | id_cred=abac_context_add_id_credential(ctxt,*a_id); |
---|
| 312 | } |
---|
| 313 | |
---|
| 314 | if (keyid != NULL) free(keyid); |
---|
| 315 | if (cn != NULL) free(cn); |
---|
| 316 | return ABAC_CERT_SUCCESS; |
---|
| 317 | |
---|
| 318 | error: |
---|
| 319 | if (keyid != NULL) free(keyid); |
---|
| 320 | if (cn != NULL) free(cn); |
---|
| 321 | |
---|
| 322 | return ret; |
---|
| 323 | } |
---|
| 324 | |
---|
| 325 | |
---|
| 326 | int abac_context_creds_count(abac_context_t *ctxt) |
---|
| 327 | { |
---|
| 328 | int sz=abac_list_size(ctxt->context_attr_hashkeyid_list); |
---|
| 329 | return sz; |
---|
| 330 | } |
---|
| 331 | |
---|
| 332 | int abac_context_id_creds_count(abac_context_t *ctxt) |
---|
| 333 | { |
---|
| 334 | int sz=abac_list_size(ctxt->context_id_hashkeyid_list); |
---|
| 335 | return sz; |
---|
| 336 | } |
---|
| 337 | |
---|
| 338 | /* collect all the creds for this context */ |
---|
| 339 | abac_stack_t *abac_context_dump_creds(abac_context_t *ctxt) |
---|
| 340 | { |
---|
| 341 | abac_stack_t *cred_list = abac_stack_new(); |
---|
| 342 | |
---|
| 343 | int cnt=0; |
---|
| 344 | if(ctxt->context_attr_hashkeyid_list) { |
---|
| 345 | char *keyid=NULL; |
---|
| 346 | abac_credential_t *cred=NULL; |
---|
| 347 | abac_list_foreach(ctxt->context_attr_hashkeyid_list, keyid, |
---|
| 348 | cred=abac_credential_lookup(keyid); |
---|
| 349 | if(cred!=NULL) |
---|
| 350 | abac_stack_push(cred_list, abac_credential_dup(cred)); |
---|
| 351 | else { |
---|
| 352 | char *btmp=abac_decode_string(keyid); |
---|
| 353 | fprintf(stderr,"??? BADDD (%s)\n", btmp); |
---|
| 354 | assert(0); |
---|
| 355 | } |
---|
| 356 | cnt++; |
---|
| 357 | ); |
---|
| 358 | } |
---|
| 359 | DEBUG_PRINTF("abac_context_dump_creds: %d\n",cnt); |
---|
| 360 | return cred_list; |
---|
| 361 | } |
---|
| 362 | |
---|
| 363 | /* collect all the id stored for this context */ |
---|
| 364 | abac_stack_t *abac_context_dump_principals(abac_context_t *ctxt) |
---|
| 365 | { |
---|
| 366 | abac_stack_t *id_list = abac_stack_new(); |
---|
| 367 | |
---|
| 368 | int cnt=0; |
---|
| 369 | int sz=abac_list_size(ctxt->context_id_hashkeyid_list); |
---|
| 370 | |
---|
| 371 | if(ctxt->context_id_hashkeyid_list) { |
---|
| 372 | char *keyid; |
---|
| 373 | abac_id_credential_t *id; |
---|
| 374 | abac_list_foreach(ctxt->context_id_hashkeyid_list, keyid, |
---|
| 375 | id=abac_id_credential_lookup(keyid); |
---|
| 376 | abac_stack_push(id_list, abac_id_credential_dup(id)); |
---|
| 377 | cnt++; |
---|
| 378 | ); |
---|
| 379 | } |
---|
| 380 | DEBUG_PRINTF("abac_context_dump_principals: %d\n",cnt); |
---|
| 381 | return id_list; |
---|
| 382 | } |
---|
| 383 | |
---|
| 384 | /** |
---|
| 385 | * Load an attribute cert as string. |
---|
| 386 | * have minimum syntax & validity check |
---|
| 387 | */ |
---|
| 388 | static int _load_attribute_string(abac_context_t *ctxt, char* attr_string) { |
---|
| 389 | printf("NOT implemented yet!!!"); |
---|
| 390 | return ABAC_CERT_INVALID; |
---|
| 391 | } |
---|
| 392 | |
---|
| 393 | /** |
---|
| 394 | * Load an ID cert from a file and key from a file. |
---|
| 395 | */ |
---|
| 396 | int abac_context_load_id_id_key_files(abac_context_t *ctxt, char *filename, |
---|
| 397 | char *keyfilename) |
---|
| 398 | { |
---|
| 399 | struct stat sb; |
---|
| 400 | |
---|
| 401 | assert(ctxt != NULL); |
---|
| 402 | assert(filename != NULL); |
---|
| 403 | |
---|
| 404 | abac_id_t *id=NULL; |
---|
| 405 | if (lib == NULL) |
---|
| 406 | errx(1, "looks like you didn't call libabac_init() (lib is NULL)"); |
---|
| 407 | |
---|
| 408 | DEBUG_PRINTF("loading id & key files... %s\n", filename); |
---|
| 409 | certificate_t *cert = cert_get_id_cert_from_file(filename); |
---|
| 410 | |
---|
| 411 | if (cert == NULL) |
---|
| 412 | return ABAC_CERT_INVALID; |
---|
| 413 | |
---|
| 414 | int rc=_load_id(ctxt,&id,cert); |
---|
| 415 | |
---|
| 416 | if(rc==ABAC_CERT_EXISTS) { |
---|
| 417 | DEBUG_PRINTF("abac_context_load_id_id_key_files: id already exists\n"); |
---|
| 418 | return ABAC_CERT_SUCCESS; |
---|
| 419 | } |
---|
| 420 | |
---|
| 421 | /* try to load the private key if it is there */ |
---|
| 422 | if((rc==ABAC_CERT_SUCCESS) && keyfilename!=NULL && file_exist(keyfilename)) { |
---|
| 423 | DEBUG_PRINTF("loading... %s\n", keyfilename); |
---|
| 424 | int keyrc=abac_id_load_privkey_file(id, keyfilename); |
---|
| 425 | if(keyrc == 1) |
---|
| 426 | DEBUG_PRINTF("..load id: load(%s) with a private key\n",filename) |
---|
| 427 | |
---|
| 428 | else DEBUG_PRINTF("..load id: load(%s) without a private key\n",filename) |
---|
| 429 | } |
---|
| 430 | |
---|
| 431 | return ABAC_CERT_SUCCESS; |
---|
| 432 | } |
---|
| 433 | |
---|
| 434 | /** |
---|
| 435 | * Load an ID cert from files. |
---|
| 436 | */ |
---|
| 437 | int abac_context_load_id_enc_id_key_files(abac_context_t *ctxt, char *filename, |
---|
| 438 | char *keyfilename, char *pfile) |
---|
| 439 | { |
---|
| 440 | abac_id_t *id=NULL; |
---|
| 441 | assert(ctxt != NULL); assert(filename != NULL); assert(keyfilename!=NULL); |
---|
| 442 | |
---|
| 443 | if (lib == NULL) |
---|
| 444 | errx(1, "looks like you didn't call libabac_init() (lib is NULL)"); |
---|
| 445 | |
---|
| 446 | DEBUG_PRINTF("loading enc id & key files... %s\n", filename); |
---|
| 447 | |
---|
| 448 | // load the cert, with public key |
---|
| 449 | certificate_t *cert = cert_get_id_cert_from_file(filename); |
---|
| 450 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 451 | |
---|
| 452 | int rc=_load_id(ctxt,&id,cert); |
---|
| 453 | if(rc==ABAC_CERT_EXISTS) { |
---|
| 454 | DEBUG_PRINTF("abac_context_load_id_id_key_files: id already exists\n"); |
---|
| 455 | return ABAC_CERT_SUCCESS; |
---|
| 456 | } |
---|
| 457 | |
---|
| 458 | /* try to load the private key if it is there */ |
---|
| 459 | if((rc==ABAC_CERT_SUCCESS) && keyfilename!=NULL && file_exist(keyfilename)) { |
---|
| 460 | DEBUG_PRINTF("loading... %s\n", keyfilename); |
---|
| 461 | int keyrc=abac_id_load_enc_privkey_file(id, keyfilename, pfile); |
---|
| 462 | if(keyrc == 1) |
---|
| 463 | DEBUG_PRINTF("..load id: load(%s) with a private key\n",filename) |
---|
| 464 | else DEBUG_PRINTF("..load id: load(%s) without a private key\n",filename) |
---|
| 465 | } |
---|
| 466 | return ABAC_CERT_SUCCESS; |
---|
| 467 | } |
---|
| 468 | |
---|
| 469 | /** |
---|
| 470 | * Load an ID cert from a abac_id_t, used from abac.hh and actually |
---|
| 471 | * makes a separate copy |
---|
| 472 | */ |
---|
| 473 | int abac_context_load_id(abac_context_t *ctxt,abac_id_t *id) |
---|
| 474 | { |
---|
| 475 | assert(ctxt != NULL); assert(id); |
---|
| 476 | abac_id_t *nid = abac_id_copy(id); |
---|
| 477 | certificate_t *cert = abac_id_cert(nid); |
---|
| 478 | int ret=_load_id(ctxt,&nid,cert); |
---|
| 479 | return ret; |
---|
| 480 | } |
---|
| 481 | |
---|
| 482 | /** |
---|
| 483 | * Load an ID cert from a abac_id_t |
---|
| 484 | */ |
---|
| 485 | int abac_context_load_id_id(abac_context_t *ctxt,abac_id_t *id) |
---|
| 486 | { |
---|
| 487 | assert(ctxt != NULL); assert(id); |
---|
| 488 | |
---|
| 489 | certificate_t *cert = abac_id_cert(id); |
---|
| 490 | int ret=_load_id(ctxt,&id,cert); |
---|
| 491 | return ret; |
---|
| 492 | } |
---|
| 493 | |
---|
| 494 | /** |
---|
| 495 | * Load an ID cert from a pem chunk. |
---|
| 496 | */ |
---|
| 497 | int abac_context_load_id_pem_chunk(abac_context_t *ctxt, chunk_t chunk) |
---|
| 498 | { |
---|
| 499 | abac_id_t *id=NULL; |
---|
| 500 | |
---|
| 501 | // load the cert |
---|
| 502 | certificate_t *cert = cert_get_id_cert_from_pem_chunk(chunk); |
---|
| 503 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 504 | |
---|
| 505 | return _load_id(ctxt,&id,cert); |
---|
| 506 | } |
---|
| 507 | |
---|
| 508 | /* used locally */ |
---|
| 509 | static int _abac_context_load_id_pem_chunk(abac_context_t *ctxt, abac_id_t **a_id, chunk_t chunk) |
---|
| 510 | { |
---|
| 511 | // load the cert |
---|
| 512 | certificate_t *cert = cert_get_id_cert_from_pem_chunk(chunk); |
---|
| 513 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 514 | |
---|
| 515 | return _load_id(ctxt,a_id,cert); |
---|
| 516 | } |
---|
| 517 | |
---|
| 518 | /** |
---|
| 519 | * Load an ID cert from a chunk, Note, this only loads the id cert part |
---|
| 520 | * and so it is not suitable for creating an attribute credential with. |
---|
| 521 | * Only a complete id cert + privkey could create attribute credential. |
---|
| 522 | */ |
---|
| 523 | int abac_context_load_id_chunk(abac_context_t *ctxt, abac_chunk_t ccert) |
---|
| 524 | { |
---|
| 525 | assert(ctxt != NULL); |
---|
| 526 | |
---|
| 527 | chunk_t cert_chunk = { ccert.ptr, ccert.len }; |
---|
| 528 | abac_id_t *id=NULL; |
---|
| 529 | |
---|
| 530 | // load the cert |
---|
| 531 | certificate_t *cert = cert_get_id_cert_from_chunk(cert_chunk); |
---|
| 532 | |
---|
| 533 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 534 | |
---|
| 535 | int ret=_load_id(ctxt,&id,cert); |
---|
| 536 | return ret; |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | /** |
---|
| 540 | * Load an ID cert from a cert chunk and a privkey chunk, |
---|
| 541 | * this complete id cert + privkey could create attribute credential. |
---|
| 542 | */ |
---|
| 543 | int abac_context_load_id_privkey_chunk(abac_context_t *ctxt,abac_chunk_t ccert, |
---|
| 544 | abac_chunk_t privkey) |
---|
| 545 | { |
---|
| 546 | assert(ctxt != NULL); |
---|
| 547 | chunk_t cert_chunk = { ccert.ptr, ccert.len }; |
---|
| 548 | /*A HACK/SWIG, this is to work around the swig's stub that seems to |
---|
| 549 | mess up the transformation from abac_chunk_t to chunk_t and calling of |
---|
| 550 | load_id_chunks to here */ |
---|
| 551 | chunk_t privkey_chunk = { strndup(privkey.ptr,privkey.len), privkey.len }; |
---|
| 552 | |
---|
| 553 | abac_id_t *id=NULL; |
---|
| 554 | |
---|
| 555 | // load the cert |
---|
| 556 | certificate_t *cert = cert_get_id_cert_from_chunk(cert_chunk); |
---|
| 557 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 558 | |
---|
| 559 | int rc=_load_id(ctxt,&id,cert); |
---|
| 560 | if(rc == ABAC_CERT_SUCCESS) { |
---|
| 561 | rc=abac_id_load_privkey_chunk(id, privkey_chunk); |
---|
| 562 | } |
---|
| 563 | |
---|
| 564 | return rc; |
---|
| 565 | } |
---|
| 566 | |
---|
| 567 | /** |
---|
| 568 | * Load an ID cert and privkey from chunks. |
---|
| 569 | */ |
---|
| 570 | int |
---|
| 571 | abac_context_load_id_enc_privkey_chunk(abac_context_t *ctxt, abac_chunk_t ccert, |
---|
| 572 | abac_chunk_t privkey, char* pfile) { |
---|
| 573 | |
---|
| 574 | assert(ctxt != NULL); |
---|
| 575 | chunk_t cert_chunk = { ccert.ptr, ccert.len }; |
---|
| 576 | /*A HACK/SWIG, this is to work around the swig's stub that seems to |
---|
| 577 | mess up the transformation from abac_chunk_t to chunk_t and calling of |
---|
| 578 | load_id_chunks to here */ |
---|
| 579 | chunk_t privkey_chunk = { strndup(privkey.ptr,privkey.len), privkey.len }; |
---|
| 580 | |
---|
| 581 | abac_id_t *id=NULL; |
---|
| 582 | certificate_t *cert = cert_get_id_cert_from_chunk(cert_chunk); |
---|
| 583 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 584 | |
---|
| 585 | int rc=_load_id(ctxt,&id,cert); |
---|
| 586 | if(rc == ABAC_CERT_SUCCESS) { |
---|
| 587 | rc=abac_id_load_enc_privkey_chunk(id, privkey_chunk, pfile); |
---|
| 588 | } |
---|
| 589 | return rc; |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | |
---|
| 593 | static int matchex(const char *subject, const char *pattern, int *so, int *eo) |
---|
| 594 | { |
---|
| 595 | int rc; // Returned code |
---|
| 596 | regmatch_t pmatch; |
---|
| 597 | |
---|
| 598 | regex_t re; // Compiled regexp pattern |
---|
| 599 | |
---|
| 600 | if (regcomp(&re, pattern, 0) != 0) return 0; |
---|
| 601 | |
---|
| 602 | rc = regexec(&re, subject, 1 , &pmatch, 0); |
---|
| 603 | regfree(&re); |
---|
| 604 | |
---|
| 605 | if (rc == REG_NOMATCH ) return 0; |
---|
| 606 | |
---|
| 607 | *so=pmatch.rm_so; |
---|
| 608 | *eo=pmatch.rm_eo; |
---|
| 609 | |
---|
| 610 | return 1; |
---|
| 611 | } |
---|
| 612 | |
---|
| 613 | |
---|
| 614 | static chunk_t _extract_chunk(char *data, char* startline, char* endline) |
---|
| 615 | { |
---|
| 616 | int found=0; |
---|
| 617 | int startos=0; |
---|
| 618 | int endos=0; |
---|
| 619 | regex_t re; |
---|
| 620 | regmatch_t pm; |
---|
| 621 | int rc; |
---|
| 622 | |
---|
| 623 | int st; |
---|
| 624 | int et; |
---|
| 625 | |
---|
| 626 | rc=matchex(data, startline, &st, &et); |
---|
| 627 | if(rc==0) return chunk_empty; |
---|
| 628 | startos=st; |
---|
| 629 | |
---|
| 630 | rc=matchex(data, endline, &st, &et); |
---|
| 631 | if(rc==0) return chunk_empty; |
---|
| 632 | endos=et; |
---|
| 633 | |
---|
| 634 | int len=endos - startos; |
---|
| 635 | |
---|
| 636 | DEBUG_PRINTF("making a chunk of size (%d) from %d and %d\n",len, startos,endos); |
---|
| 637 | char *ptr=strndup(data+startos,len); |
---|
| 638 | |
---|
| 639 | chunk_t ret = { ptr, len }; |
---|
| 640 | return ret; |
---|
| 641 | } |
---|
| 642 | |
---|
| 643 | /** |
---|
| 644 | * Load an ID cert from a file, it may contain key part but not necessary. |
---|
| 645 | */ |
---|
| 646 | int abac_context_load_id_idkey_file(abac_context_t *ctxt, char *filename) |
---|
| 647 | { |
---|
| 648 | struct stat sb; |
---|
| 649 | int fd; |
---|
| 650 | int rc; |
---|
| 651 | assert(ctxt != NULL); assert(filename != NULL); |
---|
| 652 | abac_id_t *id=NULL; |
---|
| 653 | |
---|
| 654 | DEBUG_PRINTF("abac_context_load_id_idkey_file(%s)\n", filename); |
---|
| 655 | |
---|
| 656 | fd = open(filename, O_RDONLY); |
---|
| 657 | if (fd == -1) { return 1; } |
---|
| 658 | if(stat(filename, &sb) == -1) { |
---|
| 659 | close(fd); |
---|
| 660 | return 1; |
---|
| 661 | } |
---|
| 662 | char* data = (char *)mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); |
---|
| 663 | if(data == MAP_FAILED) { |
---|
| 664 | close(fd); |
---|
| 665 | return 1; |
---|
| 666 | } |
---|
| 667 | close(fd); |
---|
| 668 | |
---|
| 669 | chunk_t key_pem_chunk=_extract_chunk(data, |
---|
| 670 | "-----BEGIN RSA PRIVATE KEY-----","-----END RSA PRIVATE KEY-----"); |
---|
| 671 | chunk_t cert_pem_chunk=_extract_chunk(data, |
---|
| 672 | "-----BEGIN CERTIFICATE-----","-----END CERTIFICATE-----"); |
---|
| 673 | |
---|
| 674 | /* key=0, cert=0 */ |
---|
| 675 | if(key_pem_chunk.len==0 && cert_pem_chunk.len==0) { |
---|
| 676 | DEBUG_PRINTF("abac_context_load_id_idkey_file: no key or id in idkey_file\n"); |
---|
| 677 | goto error; |
---|
| 678 | } |
---|
| 679 | |
---|
| 680 | /* key=0, cert=1 */ |
---|
| 681 | if(key_pem_chunk.len==0) { |
---|
| 682 | DEBUG_PRINTF("abac_context_load_id_idkey_file: no key in idkey_file\n"); |
---|
| 683 | munmap(data, sb.st_size); |
---|
| 684 | chunk_free(&key_pem_chunk); |
---|
| 685 | return abac_context_load_id_id_key_files(ctxt,filename,NULL); |
---|
| 686 | } |
---|
| 687 | |
---|
| 688 | /* key=1, cert=1 */ |
---|
| 689 | if(cert_pem_chunk.len!=0) { |
---|
| 690 | DEBUG_PRINTF("loading cert pem chunk len(%d)\n", cert_pem_chunk.len); |
---|
| 691 | rc=_abac_context_load_id_pem_chunk(ctxt,&id,cert_pem_chunk); |
---|
| 692 | if(rc != 0) { |
---|
| 693 | DEBUG_PRINTF("abac_context_load_id_idkey_file: fail to load the id\n"); |
---|
| 694 | goto error; |
---|
| 695 | } |
---|
| 696 | /* key=1, cert=0 */ |
---|
| 697 | } else { |
---|
| 698 | DEBUG_PRINTF("abac_context_load_id_idkey_file: there is no id info in there\n"); |
---|
| 699 | goto error; |
---|
| 700 | } |
---|
| 701 | |
---|
| 702 | /* handle the key_pem_chunk */ |
---|
| 703 | DEBUG_PRINTF("loading key pem chunk len(%d)\n", key_pem_chunk.len); |
---|
| 704 | rc=abac_id_load_privkey_chunk(id, key_pem_chunk); |
---|
| 705 | if(rc==0) { |
---|
| 706 | printf("abac_context_load_id_idkey_file:failed to load priv key!!!\n"); |
---|
| 707 | goto error; |
---|
| 708 | } |
---|
| 709 | |
---|
| 710 | munmap(data, sb.st_size); |
---|
| 711 | return 0; |
---|
| 712 | |
---|
| 713 | error: |
---|
| 714 | munmap(data, sb.st_size); |
---|
| 715 | return 1; |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | /** |
---|
| 719 | * Load an ID cert from a file, it may contain encrypted key part but not necessary. |
---|
| 720 | */ |
---|
| 721 | int abac_context_load_id_enc_idkey_file(abac_context_t *ctxt, char *filename, char *pfile) |
---|
| 722 | { |
---|
| 723 | struct stat sb; |
---|
| 724 | int fd; |
---|
| 725 | int rc; |
---|
| 726 | abac_id_t *id=NULL; |
---|
| 727 | |
---|
| 728 | assert(ctxt != NULL); assert(filename != NULL); |
---|
| 729 | abac_id_credential_t *id_cert=NULL; |
---|
| 730 | |
---|
| 731 | fd = open(filename, O_RDONLY); |
---|
| 732 | if (fd == -1) { return 1; } |
---|
| 733 | if(stat(filename, &sb) == -1) { |
---|
| 734 | close(fd); |
---|
| 735 | return 1; |
---|
| 736 | } |
---|
| 737 | char* data = (char *)mmap(NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0); |
---|
| 738 | if(data == MAP_FAILED) { |
---|
| 739 | |
---|
| 740 | return 1; |
---|
| 741 | } |
---|
| 742 | close(fd); |
---|
| 743 | |
---|
| 744 | chunk_t key_pem_chunk=_extract_chunk(data, |
---|
| 745 | "-----BEGIN RSA PRIVATE KEY-----","-----END RSA PRIVATE KEY-----"); |
---|
| 746 | chunk_t cert_pem_chunk=_extract_chunk(data, |
---|
| 747 | "-----BEGIN CERTIFICATE-----","-----END CERTIFICATE-----"); |
---|
| 748 | |
---|
| 749 | /* key=0, cert=0 */ |
---|
| 750 | if(key_pem_chunk.len==0 && cert_pem_chunk.len==0) { |
---|
| 751 | DEBUG_PRINTF("abac_context_load_id_idkey_file: no key or id in idkey_file\n"); |
---|
| 752 | goto error; |
---|
| 753 | } |
---|
| 754 | |
---|
| 755 | /* key=0, cert=1 */ |
---|
| 756 | if(key_pem_chunk.len==0) { |
---|
| 757 | DEBUG_PRINTF("abac_context_load_id_idkey_file: no key in idkey_file\n"); |
---|
| 758 | munmap(data, sb.st_size); |
---|
| 759 | chunk_free(&key_pem_chunk); |
---|
| 760 | return abac_context_load_id_id_key_files(ctxt,filename,NULL); |
---|
| 761 | } |
---|
| 762 | |
---|
| 763 | /* key=1, cert=1 */ |
---|
| 764 | if(cert_pem_chunk.len!=0) { |
---|
| 765 | DEBUG_PRINTF("loading cert pem chunk len(%d)\n", cert_pem_chunk.len); |
---|
| 766 | rc=_abac_context_load_id_pem_chunk(ctxt,&id,cert_pem_chunk); |
---|
| 767 | if(rc != 0) { |
---|
| 768 | DEBUG_PRINTF("abac_context_load_id_idkey_file: fail to load the id\n"); |
---|
| 769 | goto error; |
---|
| 770 | } |
---|
| 771 | /* key=1, cert=0 */ |
---|
| 772 | } else { |
---|
| 773 | DEBUG_PRINTF("abac_context_load_id_idkey_file: there is no id info in there\n"); |
---|
| 774 | goto error; |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | /* handle the key_pem_chunk */ |
---|
| 778 | DEBUG_PRINTF("loading key pem chunk len(%d)\n", key_pem_chunk.len); |
---|
| 779 | |
---|
| 780 | rc=abac_id_load_enc_privkey_chunk(id, key_pem_chunk, pfile); |
---|
| 781 | if(rc==0) { |
---|
| 782 | printf("abac_context_load_id_idkey_file:failed to load priv key!!!\n"); |
---|
| 783 | goto error; |
---|
| 784 | } |
---|
| 785 | |
---|
| 786 | munmap(data, sb.st_size); |
---|
| 787 | return 0; |
---|
| 788 | |
---|
| 789 | error: |
---|
| 790 | munmap(data, sb.st_size); |
---|
| 791 | return 1; |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | /* not duplicated */ |
---|
| 795 | abac_id_credential_t *abac_context_id_credential_lookup(abac_context_t *ctxt,char *pname) |
---|
| 796 | { |
---|
| 797 | int cnt=0; |
---|
| 798 | assert(pname); |
---|
| 799 | if(ctxt->context_id_hashkeyid_list) { |
---|
| 800 | char *keyid; |
---|
| 801 | abac_id_credential_t *id_cred; |
---|
| 802 | abac_list_foreach(ctxt->context_id_hashkeyid_list, keyid, |
---|
| 803 | if(strcmp(keyid,pname)==0) { |
---|
| 804 | id_cred=abac_id_credential_lookup(keyid); |
---|
| 805 | return id_cred; |
---|
| 806 | } |
---|
| 807 | ); |
---|
| 808 | } |
---|
| 809 | return NULL; |
---|
| 810 | } |
---|
| 811 | |
---|
| 812 | void abac_context_id_credential_free(abac_context_t *ctxt, abac_id_credential_t *ptr) |
---|
| 813 | { |
---|
| 814 | if (ptr == NULL) |
---|
| 815 | return; |
---|
| 816 | |
---|
| 817 | char *keyid=abac_id_credential_hashkey(ptr); |
---|
| 818 | |
---|
| 819 | /* make sure it belongs to this context */ |
---|
| 820 | char *cur=NULL; |
---|
| 821 | abac_list_foreach(ctxt->context_id_hashkeyid_list, cur, |
---|
| 822 | if(strcmp(cur,keyid)==0) |
---|
| 823 | break; |
---|
| 824 | ); |
---|
| 825 | assert(cur!=NULL); |
---|
| 826 | abac_list_remove(ctxt->context_id_hashkeyid_list, cur); |
---|
| 827 | free(cur); |
---|
| 828 | |
---|
| 829 | abac_id_credential_free(ptr); |
---|
| 830 | } |
---|
| 831 | |
---|
| 832 | /****************************************************************************/ |
---|
| 833 | static char *_get_keyid_from_cert(certificate_t *cert) |
---|
| 834 | { |
---|
| 835 | assert(cert); |
---|
| 836 | ac_t *ac=(ac_t *)cert; |
---|
| 837 | ietf_attributes_t *attr_cert=ac->get_groups(ac); |
---|
| 838 | if(attr_cert == NULL) { |
---|
| 839 | char *tmp=NULL; |
---|
| 840 | asprintf(&tmp,"_get_keyid_from_cert: fail to get keyid from certificate_t"); |
---|
| 841 | panic(tmp); |
---|
| 842 | } |
---|
| 843 | char *encoded_attr_string=attr_cert->get_string(attr_cert); |
---|
| 844 | attr_cert->destroy(attr_cert); |
---|
| 845 | return encoded_attr_string; |
---|
| 846 | } |
---|
| 847 | |
---|
| 848 | static int _verify_valid_credential_issuer(abac_context_t *ctxt, char* keyid, |
---|
| 849 | certificate_t *cert, abac_id_t **issuer_id) |
---|
| 850 | { |
---|
| 851 | abac_id_credential_t *id_cred; |
---|
| 852 | int ret, i; |
---|
| 853 | |
---|
| 854 | // get the issuer based on keyid |
---|
| 855 | id_cred=abac_context_id_credential_lookup(ctxt,keyid); |
---|
| 856 | if(id_cred == NULL) { |
---|
| 857 | ret = ABAC_CERT_MISSING_ISSUER; |
---|
| 858 | DEBUG_PRINTF("_verify_valid_credential_issuer:can not find %s in id_creds\n", keyid); |
---|
| 859 | goto error; |
---|
| 860 | } |
---|
| 861 | |
---|
| 862 | *issuer_id=abac_id_credential_id(id_cred); |
---|
| 863 | if (*issuer_id == NULL) { |
---|
| 864 | ret = ABAC_CERT_MISSING_ISSUER; |
---|
| 865 | DEBUG_PRINTF("_verify_valid_credential_issuer:can not find %s in id_creds\n", keyid); |
---|
| 866 | goto error; |
---|
| 867 | } |
---|
| 868 | |
---|
| 869 | // make sure the issuer's signed it |
---|
| 870 | ret = verify_signature(abac_id_cert(*issuer_id), cert); |
---|
| 871 | if (!ret) { |
---|
| 872 | abac_yy_set_error_code(ABAC_RT_CERT_BAD_SIG); |
---|
| 873 | ret=ABAC_CERT_BAD_SIG; |
---|
| 874 | DEBUG_PRINTF("_verify_valid_credential_issuer:signing policy failed for %s \n", keyid); |
---|
| 875 | goto error; |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | return ABAC_CERT_SUCCESS; |
---|
| 879 | |
---|
| 880 | error: |
---|
| 881 | return ret; |
---|
| 882 | } |
---|
| 883 | |
---|
| 884 | /* at this point we know we have a good attribute cert baked it in */ |
---|
| 885 | static int _insert_valid_cred(abac_context_t *ctxt, abac_id_t *issuer_id, |
---|
| 886 | abac_aspect_t *head_aspect, abac_aspect_t *tail_aspect, certificate_t *cert, |
---|
| 887 | abac_credential_t **cred_ret, char *encoded_attr_string, int using_this) |
---|
| 888 | { |
---|
| 889 | abac_list_t *clauses=NULL; |
---|
| 890 | abac_id_credential_t *id_cred; |
---|
| 891 | int ret, i; |
---|
| 892 | |
---|
| 893 | // generate prolog clauses from aspect structures |
---|
| 894 | clauses = generate_pl_clauses(ctxt,head_aspect, tail_aspect, encoded_attr_string,using_this); |
---|
| 895 | |
---|
| 896 | // make a new credential if only is first |
---|
| 897 | if(*cred_ret == NULL) { |
---|
| 898 | abac_attribute_t *attr=abac_attribute_new(issuer_id, cert, cert->get_ref(cert)); |
---|
| 899 | abac_attribute_set_head(attr, head_aspect); |
---|
| 900 | abac_attribute_add_tail(attr, tail_aspect); |
---|
| 901 | if(using_this) abac_attribute_set_using_this(attr,using_this); |
---|
| 902 | *cred_ret=abac_credential_new(abac_attribute_copy(attr),encoded_attr_string); /* need a deep copy ? */ |
---|
| 903 | abac_add_cred(*cred_ret); |
---|
| 904 | } |
---|
| 905 | |
---|
| 906 | // add clauses |
---|
| 907 | char *cur=NULL; |
---|
| 908 | abac_list_foreach(clauses, cur, |
---|
| 909 | abac_list_add(ctxt->context_pl_clauses, abac_xstrdup(cur)); |
---|
| 910 | ); |
---|
| 911 | |
---|
| 912 | /* add locally */ |
---|
| 913 | abac_list_add(ctxt->context_attr_hashkeyid_list, abac_xstrdup(encoded_attr_string)); |
---|
| 914 | /* insert into db */ |
---|
| 915 | int add_ret=abac_pl_add_credential(clauses); |
---|
| 916 | |
---|
| 917 | DEBUG_PRINTF("-->adding into context attr_creds, [%s]hashkey(%s)..cnt(%d)\n", |
---|
| 918 | ctxt->namespace, |
---|
| 919 | encoded_attr_string, abac_list_size(ctxt->context_attr_hashkeyid_list)); |
---|
| 920 | |
---|
| 921 | return ABAC_CERT_SUCCESS; |
---|
| 922 | |
---|
| 923 | error: |
---|
| 924 | if(head_aspect) abac_aspect_free(head_aspect); |
---|
| 925 | if(tail_aspect) abac_aspect_free(tail_aspect); |
---|
| 926 | return ABAC_CERT_INVALID; |
---|
| 927 | } |
---|
| 928 | |
---|
| 929 | /** |
---|
| 930 | * Load an attribute cert. |
---|
| 931 | * Returns true only if the certificate is valid and is issued by the proper |
---|
| 932 | * authority. |
---|
| 933 | * attribute string is parsed via yyparse call |
---|
| 934 | */ |
---|
| 935 | static int _load_attribute_cert(abac_context_t *ctxt, certificate_t *cert, |
---|
| 936 | abac_credential_t **cred_ret) |
---|
| 937 | { |
---|
| 938 | int ret, i; |
---|
| 939 | abac_aspect_t *head_aspect = NULL; |
---|
| 940 | abac_aspect_t *tail_aspect = NULL; |
---|
| 941 | int using_this=0; |
---|
| 942 | assert(cert); |
---|
| 943 | |
---|
| 944 | char *encoded_attr_string=_get_keyid_from_cert(cert); |
---|
| 945 | if(encoded_attr_string==NULL ) { |
---|
| 946 | fprintf(stderr,"this is bad in loading the cert, empty encoded_attr_string\n"); |
---|
| 947 | goto error; |
---|
| 948 | } |
---|
| 949 | /* see if it already exists in context */ |
---|
| 950 | abac_credential_t *cred=abac_context_credential_lookup(ctxt,encoded_attr_string); |
---|
| 951 | if(cred != NULL) { |
---|
| 952 | if(debug) fprintf(stderr,"trying to insert identical attribute into a context\n"); |
---|
| 953 | ret = ABAC_CERT_INVALID; |
---|
| 954 | goto error; |
---|
| 955 | } |
---|
| 956 | |
---|
| 957 | char *attr_string = abac_decode_string(encoded_attr_string); |
---|
| 958 | if (attr_string == NULL) { |
---|
| 959 | ret = ABAC_CERT_INVALID; |
---|
| 960 | goto error; |
---|
| 961 | } |
---|
| 962 | |
---|
| 963 | /* see if it exist ... */ |
---|
| 964 | *cred_ret=abac_credential_lookup(encoded_attr_string); |
---|
| 965 | if(*cred_ret != NULL ) { |
---|
| 966 | //already exist in session |
---|
| 967 | abac_attribute_t *attr=abac_credential_attribute(*cred_ret); |
---|
| 968 | head_aspect=abac_attribute_head(attr); |
---|
| 969 | tail_aspect=abac_attribute_tail(attr); |
---|
| 970 | using_this=abac_attribute_get_this(attr); |
---|
| 971 | } else { |
---|
| 972 | /* call into yacc parser */ |
---|
| 973 | int rc=abac_yy_parse(ctxt, attr_string, &head_aspect, &tail_aspect, &using_this); |
---|
| 974 | if(rc) { |
---|
| 975 | ret = ABAC_CERT_INVALID; |
---|
| 976 | goto error; |
---|
| 977 | } |
---|
| 978 | } |
---|
| 979 | |
---|
| 980 | char *keyid=abac_aspect_principal_principalname(head_aspect); |
---|
| 981 | abac_id_t *issuer_id=NULL; |
---|
| 982 | ret= _verify_valid_credential_issuer(ctxt,keyid,cert,&issuer_id); |
---|
| 983 | if(ret != ABAC_CERT_SUCCESS) { |
---|
| 984 | char *tmp=NULL; |
---|
| 985 | asprintf(&tmp,"_load_attribute_cert: fail to verify credential's issuer (%s)",attr_string); |
---|
| 986 | panic(tmp); |
---|
| 987 | } |
---|
| 988 | |
---|
| 989 | ret=_insert_valid_cred(ctxt, issuer_id, head_aspect, tail_aspect, |
---|
| 990 | cert,cred_ret,encoded_attr_string, using_this); |
---|
| 991 | |
---|
| 992 | if(ret != ABAC_CERT_SUCCESS) { |
---|
| 993 | char *tmp=NULL; |
---|
| 994 | asprintf(&tmp,"_load_attribute_cert: fail to verify credential (%s)",attr_string); |
---|
| 995 | panic(tmp); |
---|
| 996 | } |
---|
| 997 | |
---|
| 998 | return ABAC_CERT_SUCCESS; |
---|
| 999 | |
---|
| 1000 | error: |
---|
| 1001 | return ret; |
---|
| 1002 | } |
---|
| 1003 | |
---|
| 1004 | void abac_print_clauses(abac_list_t *clauses, FILE *fp) |
---|
| 1005 | { |
---|
| 1006 | if (clauses != NULL) { |
---|
| 1007 | char *cur; |
---|
| 1008 | printf("total-- %d clauses\n", abac_list_size(clauses)); |
---|
| 1009 | abac_list_foreach(clauses, cur, |
---|
| 1010 | if(cur) { |
---|
| 1011 | if(fp) |
---|
[d0efdec] | 1012 | fprintf (fp,"a clause, %ld(%s)\n", (long)cur,cur); |
---|
| 1013 | else printf ("a clause, %ld(%s)\n", (long)cur,cur); |
---|
[2e9455f] | 1014 | } |
---|
| 1015 | ); |
---|
| 1016 | } |
---|
| 1017 | } |
---|
| 1018 | |
---|
| 1019 | /** |
---|
| 1020 | * Load an attribute cert from a abac_attribute_t. |
---|
| 1021 | * attr should be all checked out before arriving here |
---|
| 1022 | * but because of preloading of id, need to check the issuer id's |
---|
| 1023 | * validity in this context |
---|
| 1024 | */ |
---|
| 1025 | int abac_context_load_attribute_attribute(abac_context_t *ctxt, abac_attribute_t *ptr) |
---|
| 1026 | { |
---|
| 1027 | assert(ctxt != NULL); |
---|
| 1028 | abac_credential_t *cred=NULL; |
---|
| 1029 | |
---|
| 1030 | certificate_t *cert=abac_attribute_cert(ptr); |
---|
| 1031 | return _load_attribute_cert(ctxt, cert, &cred); |
---|
| 1032 | } |
---|
| 1033 | |
---|
| 1034 | /* this is especially made for abac_context_dup to avoid trying to do |
---|
| 1035 | yyparse again */ |
---|
| 1036 | int abac_context_load_attribute_credential(abac_context_t *ctxt, abac_attribute_t *ptr, |
---|
| 1037 | abac_credential_t *cred) |
---|
| 1038 | { |
---|
| 1039 | assert(ctxt != NULL); |
---|
| 1040 | certificate_t *cert=abac_attribute_cert(ptr); |
---|
| 1041 | return _load_attribute_cert(ctxt, cert, &cred); |
---|
| 1042 | } |
---|
| 1043 | |
---|
| 1044 | |
---|
| 1045 | /** |
---|
| 1046 | * Load an attribute cert from a abac_attribute_t. |
---|
| 1047 | * attr should be all checked out before arriving here |
---|
| 1048 | * this is called from abac.hh and so must make a |
---|
| 1049 | * separate copy of attr |
---|
| 1050 | */ |
---|
| 1051 | int abac_context_load_attribute(abac_context_t *ctxt, abac_attribute_t *ptr) |
---|
| 1052 | { |
---|
| 1053 | assert(ctxt != NULL); |
---|
| 1054 | abac_attribute_t *nptr=abac_attribute_copy(ptr); |
---|
| 1055 | int ret= abac_context_load_attribute_attribute(ctxt, nptr); |
---|
| 1056 | return ret; |
---|
| 1057 | } |
---|
| 1058 | |
---|
| 1059 | /** |
---|
| 1060 | * Load an attribute cert from a file. |
---|
| 1061 | */ |
---|
| 1062 | int abac_context_load_attribute_file(abac_context_t *ctxt, char *filename) |
---|
| 1063 | { |
---|
| 1064 | abac_credential_t *cred=NULL; |
---|
| 1065 | assert(ctxt != NULL); assert(filename != NULL); |
---|
| 1066 | |
---|
| 1067 | // load the cert |
---|
| 1068 | DEBUG_PRINTF("..loading attr file %s\n", filename); |
---|
| 1069 | certificate_t *cert = cert_get_attr_cert_from_file(filename); |
---|
| 1070 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 1071 | |
---|
| 1072 | int ret=_load_attribute_cert(ctxt, cert, &cred); |
---|
| 1073 | return ret; |
---|
| 1074 | } |
---|
| 1075 | |
---|
| 1076 | /** |
---|
| 1077 | * Load an attribute cert from a chunk. |
---|
| 1078 | */ |
---|
| 1079 | int abac_context_load_attribute_chunk(abac_context_t *ctxt, abac_chunk_t ccert) |
---|
| 1080 | { |
---|
| 1081 | abac_credential_t *cred=NULL; |
---|
| 1082 | assert(ctxt != NULL); |
---|
| 1083 | chunk_t chunk = { ccert.ptr, ccert.len }; |
---|
| 1084 | |
---|
| 1085 | // load the cert |
---|
| 1086 | certificate_t *cert = cert_get_attr_cert_from_chunk(chunk); |
---|
| 1087 | if (cert == NULL) return ABAC_CERT_INVALID; |
---|
| 1088 | |
---|
| 1089 | int ret=_load_attribute_cert(ctxt, cert, &cred); |
---|
| 1090 | return ret; |
---|
| 1091 | } |
---|
| 1092 | |
---|
| 1093 | |
---|
| 1094 | /** |
---|
| 1095 | * lookup for a credential/duplicated. |
---|
| 1096 | */ |
---|
| 1097 | abac_credential_t *abac_context_credential_lookup(abac_context_t *ctxt, char* cred_string) |
---|
| 1098 | { |
---|
| 1099 | assert(cred_string); |
---|
| 1100 | abac_credential_t *attr_cred=NULL; |
---|
| 1101 | int sz=abac_list_size(ctxt->context_attr_hashkeyid_list); |
---|
| 1102 | if(ctxt->context_attr_hashkeyid_list) { |
---|
| 1103 | char *keyid; |
---|
| 1104 | abac_list_foreach(ctxt->context_attr_hashkeyid_list, keyid, |
---|
| 1105 | if(strcmp(keyid,cred_string)==0) { |
---|
| 1106 | attr_cred=abac_credential_lookup(keyid); |
---|
| 1107 | break; |
---|
| 1108 | } |
---|
| 1109 | ); |
---|
| 1110 | } |
---|
| 1111 | if (attr_cred == NULL) { |
---|
| 1112 | DEBUG_PRINTF("DEBUG:credential_lookup, NOT FOUND..(%d)(%s)\n",sz,abac_decode_string(cred_string)); |
---|
| 1113 | return NULL; |
---|
| 1114 | } |
---|
| 1115 | abac_credential_t *rt=abac_credential_dup(attr_cred); |
---|
| 1116 | DEBUG_PRINTF("DEBUG:crential_lookup, FOUND.. (%d)(%s) \n", sz,abac_decode_string(cred_string)); |
---|
| 1117 | return rt; |
---|
| 1118 | } |
---|
| 1119 | |
---|
| 1120 | void abac_context_credential_free(abac_context_t *ctxt, abac_credential_t *ptr) |
---|
| 1121 | { |
---|
| 1122 | if (ptr == NULL) |
---|
| 1123 | return; |
---|
| 1124 | |
---|
| 1125 | char *keyid=abac_credential_hashkey(ptr); |
---|
| 1126 | |
---|
| 1127 | /* make sure it belongs to this context */ |
---|
| 1128 | char *cur=NULL; |
---|
| 1129 | abac_list_foreach(ctxt->context_attr_hashkeyid_list, cur, |
---|
| 1130 | if(strcmp(cur,keyid)==0) |
---|
| 1131 | break; |
---|
| 1132 | ); |
---|
| 1133 | assert(cur!=NULL); |
---|
| 1134 | abac_list_remove(ctxt->context_attr_hashkeyid_list, cur); |
---|
| 1135 | free(cur); |
---|
| 1136 | |
---|
| 1137 | abac_credential_free(ptr); |
---|
| 1138 | } |
---|
| 1139 | |
---|
| 1140 | /**************************************************************/ |
---|
| 1141 | char *_make_key_filename(char *cert_file) |
---|
| 1142 | { |
---|
| 1143 | char *p=strstr(cert_file,"_ID."); |
---|
| 1144 | char *head=strndup(cert_file,p-cert_file); |
---|
| 1145 | char *tail=p+4; |
---|
| 1146 | char *keyfile=NULL; |
---|
| 1147 | asprintf(&keyfile,"%s_private.%s",head,tail); |
---|
| 1148 | free(head); |
---|
| 1149 | return keyfile; |
---|
| 1150 | } |
---|
| 1151 | |
---|
| 1152 | /** |
---|
| 1153 | * Load a directory full of principal certs. |
---|
| 1154 | */ |
---|
| 1155 | void abac_context_load_principals(abac_context_t *ctxt, char *path) { |
---|
| 1156 | char *glob_pat, *key_pat; |
---|
| 1157 | glob_t glob_buf; |
---|
| 1158 | int i, ret; |
---|
| 1159 | |
---|
| 1160 | assert(ctxt != NULL); assert(path != NULL); |
---|
| 1161 | |
---|
| 1162 | int dirlen = strlen(path); |
---|
| 1163 | |
---|
| 1164 | /* make sure pick the larger one */ |
---|
| 1165 | glob_pat = abac_xmalloc(dirlen + sizeof(IDKEY_PAT)); |
---|
| 1166 | memcpy(glob_pat, path, dirlen); |
---|
| 1167 | |
---|
| 1168 | // load ID certs |
---|
| 1169 | memcpy(glob_pat + dirlen, ID_PAT, sizeof(ID_PAT)); |
---|
| 1170 | glob(glob_pat, GLOB_BRACE, NULL, &glob_buf); // TODO check for error |
---|
| 1171 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
---|
| 1172 | /* blah_ID.pem */ |
---|
| 1173 | char *cert_file = glob_buf.gl_pathv[i]; |
---|
| 1174 | /* blah_private.pem */ |
---|
| 1175 | char *key_file=_make_key_filename(cert_file); |
---|
| 1176 | DEBUG_PRINTF("--> ID cert... %s\n", cert_file); |
---|
| 1177 | DEBUG_PRINTF("--> KEY cert... %s\n", key_file); |
---|
| 1178 | ret = abac_context_load_id_id_key_files(ctxt, cert_file, key_file); |
---|
| 1179 | if (ret != ABAC_CERT_SUCCESS) |
---|
| 1180 | warnx("Couldn't load ID cert %s", cert_file); |
---|
| 1181 | } |
---|
| 1182 | globfree(&glob_buf); |
---|
| 1183 | |
---|
| 1184 | // next load IDKEY certs |
---|
| 1185 | memcpy(glob_pat + dirlen, IDKEY_PAT, sizeof(IDKEY_PAT)); |
---|
| 1186 | glob(glob_pat, GLOB_BRACE, NULL, &glob_buf); // TODO check for error |
---|
| 1187 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
---|
| 1188 | /* blah_IDKEY.pem */ |
---|
| 1189 | char *certkey_file = glob_buf.gl_pathv[i]; |
---|
| 1190 | DEBUG_PRINTF("--> IDKEY certkey... %s\n", certkey_file); |
---|
| 1191 | ret = abac_context_load_id_idkey_file(ctxt, certkey_file); |
---|
| 1192 | if (ret != ABAC_CERT_SUCCESS) |
---|
| 1193 | warnx("Couldn't load ID/KEY IDKEY cert %s", certkey_file); |
---|
| 1194 | } |
---|
| 1195 | globfree(&glob_buf); |
---|
| 1196 | |
---|
| 1197 | free(glob_pat); |
---|
| 1198 | } |
---|
| 1199 | |
---|
| 1200 | /** |
---|
| 1201 | * Load a directory full of certs. |
---|
| 1202 | */ |
---|
| 1203 | void abac_context_load_directory(abac_context_t *ctxt, char *path) { |
---|
| 1204 | char *glob_pat, *key_pat; |
---|
| 1205 | glob_t glob_buf; |
---|
| 1206 | int i, ret; |
---|
| 1207 | |
---|
| 1208 | abac_context_load_principals(ctxt,path); |
---|
| 1209 | int dirlen = strlen(path); |
---|
| 1210 | |
---|
| 1211 | /* make sure pick the larger one */ |
---|
| 1212 | glob_pat = abac_xmalloc(dirlen + sizeof(IDKEY_PAT)); |
---|
| 1213 | memcpy(glob_pat, path, dirlen); |
---|
| 1214 | |
---|
| 1215 | memcpy(glob_pat + dirlen, ATTR_PAT, sizeof(ATTR_PAT)); |
---|
| 1216 | glob(glob_pat, 0, NULL, &glob_buf); // TODO check for error |
---|
| 1217 | DEBUG_PRINTF("glob_pat is (%s)\n", glob_pat); |
---|
| 1218 | for (i = 0; i < glob_buf.gl_pathc; ++i) { |
---|
| 1219 | char *cert_file = glob_buf.gl_pathv[i]; |
---|
| 1220 | |
---|
| 1221 | DEBUG_PRINTF("--> attr file... (%s)\n", cert_file); |
---|
| 1222 | ret = abac_context_load_attribute_file(ctxt, cert_file); |
---|
| 1223 | if (ret != ABAC_CERT_SUCCESS) |
---|
| 1224 | warnx("Couldn't load attribute cert --(%d)%s", ret,cert_file); |
---|
| 1225 | DEBUG_PRINTF("Loaded.. (%s)\n", cert_file); |
---|
| 1226 | } |
---|
| 1227 | globfree(&glob_buf); |
---|
| 1228 | |
---|
| 1229 | free(glob_pat); |
---|
| 1230 | } |
---|
| 1231 | |
---|
| 1232 | /** |
---|
| 1233 | * Run a query on the data in an abac context. Returns a NULL-terminated array |
---|
| 1234 | * of abac_credential_t. Success/failure in *success. |
---|
| 1235 | * queryfor(either role or oset), with(either keyid or object type) |
---|
| 1236 | */ |
---|
| 1237 | abac_credential_t **abac_context_query(abac_context_t *ctxt, char *queryfor, char *with, int *success) { |
---|
| 1238 | DEBUG_PRINTF("abac_context_query about(%s) with(%s)\n", queryfor, with); |
---|
| 1239 | abac_credential_t **credentials = NULL, *cur; |
---|
| 1240 | assert(ctxt != NULL); assert(queryfor != NULL); |
---|
| 1241 | assert(with != NULL); assert(success != NULL); |
---|
| 1242 | |
---|
| 1243 | abac_stack_t *result = abac_pl_query(ctxt->pl, queryfor, with); |
---|
| 1244 | |
---|
| 1245 | int size = abac_stack_size(result); |
---|
| 1246 | if (size > 0) { |
---|
| 1247 | if(!abac_pl_returning_partial(ctxt->pl)) |
---|
| 1248 | *success = 1; |
---|
| 1249 | else *success = 0; |
---|
| 1250 | } else { |
---|
| 1251 | *success = 0; |
---|
| 1252 | } |
---|
| 1253 | |
---|
| 1254 | // make the array (leave space to NULL terminate it) |
---|
| 1255 | // n.b., even if the list is empty, we still return an array that |
---|
| 1256 | // only contains the NULL terminator |
---|
| 1257 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
---|
| 1258 | int i = 0; |
---|
| 1259 | if(size) { |
---|
| 1260 | while(i<size) { |
---|
| 1261 | cur=(abac_credential_t *) abac_stack_pop(result); |
---|
| 1262 | credentials[i++] = cur; |
---|
| 1263 | } |
---|
| 1264 | } |
---|
| 1265 | credentials[i] = NULL; |
---|
| 1266 | |
---|
| 1267 | if(result) |
---|
| 1268 | abac_stack_free(result); |
---|
| 1269 | |
---|
| 1270 | return credentials; |
---|
| 1271 | } |
---|
| 1272 | |
---|
| 1273 | /** |
---|
| 1274 | * Run a repeated query on the data in an abac context to get the next |
---|
| 1275 | * solution proof. Returns a NULL-terminated array |
---|
| 1276 | * of abac_credential_t. Success/failure in *success. |
---|
| 1277 | */ |
---|
| 1278 | abac_credential_t **abac_context_query_again(abac_context_t *ctxt, int *success) |
---|
| 1279 | { |
---|
| 1280 | DEBUG_PRINTF("abac_context_query_again\n"); |
---|
| 1281 | abac_credential_t **credentials = NULL, *cur; |
---|
| 1282 | assert(ctxt != NULL); |
---|
| 1283 | assert(success != NULL); |
---|
| 1284 | |
---|
| 1285 | abac_stack_t *result = abac_pl_query_again(ctxt->pl); |
---|
| 1286 | |
---|
| 1287 | int size = abac_stack_size(result); |
---|
| 1288 | if (size > 0) { |
---|
| 1289 | *success = 1; |
---|
| 1290 | } else { |
---|
| 1291 | *success = 0; |
---|
| 1292 | } |
---|
| 1293 | |
---|
| 1294 | // make the array (leave space to NULL terminate it) |
---|
| 1295 | // n.b., even if the list is empty, we still return an array that |
---|
| 1296 | // only contains the NULL terminator |
---|
| 1297 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
---|
| 1298 | int i = 0; |
---|
| 1299 | if(size) { |
---|
| 1300 | while(i<size) { |
---|
| 1301 | cur=(abac_credential_t *) abac_stack_pop(result); |
---|
| 1302 | credentials[i++] = cur; |
---|
| 1303 | } |
---|
| 1304 | } |
---|
| 1305 | credentials[i] = NULL; |
---|
| 1306 | |
---|
| 1307 | if(result) |
---|
| 1308 | abac_stack_free(result); |
---|
| 1309 | |
---|
| 1310 | return credentials; |
---|
| 1311 | } |
---|
| 1312 | |
---|
| 1313 | |
---|
| 1314 | abac_credential_t **abac_context_query_with_structure(abac_context_t *ctxt, |
---|
| 1315 | abac_aspect_t *queryfor, abac_aspect_t *with, int *success) |
---|
| 1316 | { |
---|
| 1317 | DEBUG_PRINTF("abac_context_query_with_structure\n"); |
---|
| 1318 | abac_credential_t **credentials = NULL, *cur; |
---|
| 1319 | assert(ctxt != NULL); assert(queryfor != NULL); |
---|
| 1320 | assert(with != NULL); assert(success != NULL); |
---|
| 1321 | |
---|
| 1322 | abac_stack_t *result = abac_pl_query_with_structure(ctxt->pl, queryfor, with); |
---|
| 1323 | |
---|
| 1324 | int size = abac_stack_size(result); |
---|
| 1325 | if (size > 0) { |
---|
| 1326 | *success = 1; |
---|
| 1327 | } else { |
---|
| 1328 | // XXX NOT SURE YET.. |
---|
| 1329 | // return partial proof |
---|
| 1330 | *success = 0; |
---|
| 1331 | } |
---|
| 1332 | |
---|
| 1333 | // make the array (leave space to NULL terminate it) |
---|
| 1334 | // n.b., even if the list is empty, we still return an array that |
---|
| 1335 | // only contains the NULL terminator |
---|
| 1336 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
---|
| 1337 | int i = 0; |
---|
| 1338 | if(size) { |
---|
| 1339 | while(i<size) { |
---|
| 1340 | cur=(abac_credential_t *) abac_stack_pop(result); |
---|
| 1341 | credentials[i++] = cur; |
---|
| 1342 | } |
---|
| 1343 | } |
---|
| 1344 | credentials[i] = NULL; |
---|
| 1345 | |
---|
| 1346 | if(result) |
---|
| 1347 | abac_stack_free(result); |
---|
| 1348 | |
---|
| 1349 | return credentials; |
---|
| 1350 | } |
---|
| 1351 | |
---|
| 1352 | /** |
---|
| 1353 | * A NULL-terminated array of all the credentials in the context. |
---|
| 1354 | */ |
---|
| 1355 | abac_credential_t **abac_context_credentials(abac_context_t *ctxt) { |
---|
| 1356 | abac_credential_t **credentials = NULL, *cur; |
---|
| 1357 | assert(ctxt != NULL); |
---|
| 1358 | |
---|
| 1359 | abac_stack_t *result = abac_context_dump_creds(ctxt); |
---|
| 1360 | int size = abac_stack_size(result); |
---|
| 1361 | |
---|
| 1362 | // make the array (leave space to NULL terminate it) |
---|
| 1363 | // n.b., even if the list is empty, we still return an array that |
---|
| 1364 | // only contains the NULL terminator |
---|
| 1365 | credentials = abac_xmalloc(sizeof(abac_credential_t *) * (size + 1)); |
---|
| 1366 | int i = 0; |
---|
| 1367 | if(size) { |
---|
| 1368 | while(i<size) { |
---|
| 1369 | cur=(abac_credential_t *) abac_stack_pop(result); |
---|
| 1370 | /* if not in there yet, add into it */ |
---|
| 1371 | credentials[i++] = cur; |
---|
| 1372 | } |
---|
| 1373 | } |
---|
| 1374 | credentials[i] = NULL; |
---|
| 1375 | |
---|
| 1376 | if(result) |
---|
| 1377 | abac_stack_free(result); |
---|
| 1378 | return credentials; |
---|
| 1379 | } |
---|
| 1380 | |
---|
| 1381 | /** |
---|
| 1382 | * Frees a NULL-terminated list of credentials. context independent |
---|
| 1383 | */ |
---|
| 1384 | void abac_free_credentials(abac_credential_t **credentials) { |
---|
| 1385 | int i; |
---|
| 1386 | |
---|
| 1387 | if (credentials == NULL) |
---|
| 1388 | return; |
---|
| 1389 | |
---|
| 1390 | for (i = 0; credentials[i] != NULL; ++i) |
---|
| 1391 | abac_credential_free(credentials[i]); |
---|
| 1392 | free(credentials); |
---|
| 1393 | } |
---|
| 1394 | |
---|
| 1395 | /** |
---|
| 1396 | * A NULL-terminated array of all the principals in the context. |
---|
| 1397 | */ |
---|
| 1398 | abac_id_credential_t **abac_context_principals(abac_context_t *ctxt) |
---|
| 1399 | { |
---|
| 1400 | abac_id_credential_t **principals = NULL, *cur; |
---|
| 1401 | assert(ctxt != NULL); |
---|
| 1402 | |
---|
| 1403 | abac_stack_t *result = abac_context_dump_principals(ctxt); |
---|
| 1404 | |
---|
| 1405 | int size = abac_stack_size(result); |
---|
| 1406 | |
---|
| 1407 | // make the array (leave space to NULL terminate it) |
---|
| 1408 | // n.b., even if the list is empty, we still return an array that |
---|
| 1409 | // only contains the NULL terminator |
---|
| 1410 | principals = abac_xmalloc(sizeof(abac_id_credential_t *) * (size + 1)); |
---|
| 1411 | int i = 0; |
---|
| 1412 | if(size) { |
---|
| 1413 | while(i<size) { |
---|
| 1414 | cur=(abac_id_credential_t *) abac_stack_pop(result); |
---|
| 1415 | /* if not in there yet, add into it */ |
---|
| 1416 | principals[i++] = cur; |
---|
| 1417 | } |
---|
| 1418 | } |
---|
| 1419 | principals[i] = NULL; |
---|
| 1420 | |
---|
| 1421 | if(result) |
---|
| 1422 | abac_stack_free(result); |
---|
| 1423 | return principals; |
---|
| 1424 | } |
---|
| 1425 | |
---|
| 1426 | /** |
---|
| 1427 | * Frees a NULL-terminated list of principals, context independent |
---|
| 1428 | */ |
---|
| 1429 | void abac_free_principals(abac_id_credential_t **principals) |
---|
| 1430 | { |
---|
| 1431 | int i; |
---|
| 1432 | |
---|
| 1433 | if (principals == NULL) |
---|
| 1434 | return; |
---|
| 1435 | |
---|
| 1436 | for (i = 0; principals[i] != NULL; ++i) |
---|
| 1437 | abac_id_credential_free(principals[i]); |
---|
| 1438 | free(principals); |
---|
| 1439 | } |
---|
| 1440 | |
---|
| 1441 | |
---|
| 1442 | |
---|
| 1443 | /** |
---|
| 1444 | * Free an abac context. |
---|
| 1445 | */ |
---|
| 1446 | void abac_context_free(abac_context_t *ctxt) |
---|
| 1447 | { |
---|
| 1448 | assert(ctxt != NULL); |
---|
| 1449 | DEBUG_PRINTF("abac_conext_free..\n"); |
---|
| 1450 | |
---|
| 1451 | abac_verifier_session_remove_context(ctxt); |
---|
| 1452 | |
---|
| 1453 | if(ctxt->namespace) free(ctxt->namespace); |
---|
| 1454 | abac_pl_free(ctxt->pl); |
---|
| 1455 | |
---|
| 1456 | DEBUG_PRINTF("looking to free context_attr_hashkeyid_list..\n"); |
---|
| 1457 | if(ctxt->context_attr_hashkeyid_list) { |
---|
| 1458 | if( abac_list_size(ctxt->context_attr_hashkeyid_list)>0) { |
---|
| 1459 | /* free all the keys */ |
---|
| 1460 | char *cur; |
---|
| 1461 | abac_list_foreach(ctxt->context_attr_hashkeyid_list, cur, |
---|
| 1462 | if(cur) { |
---|
| 1463 | DEBUG_PRINTF("hum.. attr hashkey being freed.. %s\n", cur); |
---|
| 1464 | abac_credential_t *attr=abac_credential_lookup(cur); |
---|
| 1465 | /* XXX abac_check_cred(cur); */ |
---|
| 1466 | assert(attr!=NULL); |
---|
| 1467 | abac_credential_free(attr); |
---|
| 1468 | free(cur); |
---|
| 1469 | } |
---|
| 1470 | ); |
---|
| 1471 | } |
---|
| 1472 | abac_list_free(ctxt->context_attr_hashkeyid_list); |
---|
| 1473 | } |
---|
| 1474 | |
---|
| 1475 | DEBUG_PRINTF("looking to free context_id_hashkeyid_list..\n"); |
---|
| 1476 | if(ctxt->context_id_hashkeyid_list) { |
---|
| 1477 | |
---|
| 1478 | if(abac_list_size(ctxt->context_id_hashkeyid_list)) { |
---|
| 1479 | char *cur; |
---|
| 1480 | abac_list_foreach(ctxt->context_id_hashkeyid_list, cur, |
---|
| 1481 | if(cur) { |
---|
| 1482 | DEBUG_PRINTF("hum.. id hashkey being freed.. %s\n", cur); |
---|
| 1483 | /* abac_id_credential_t *id=abac_check_id_cred(cur); */ |
---|
| 1484 | abac_id_credential_t *id=abac_id_credential_lookup(cur); |
---|
| 1485 | assert(id!=NULL); |
---|
| 1486 | abac_id_credential_free(id); |
---|
| 1487 | free(cur); |
---|
| 1488 | } |
---|
| 1489 | ); |
---|
| 1490 | } |
---|
| 1491 | abac_list_free(ctxt->context_id_hashkeyid_list); |
---|
| 1492 | } |
---|
| 1493 | |
---|
| 1494 | DEBUG_PRINTF("looking to free context_pl_clauses..\n"); |
---|
| 1495 | if(ctxt->context_pl_clauses) { |
---|
| 1496 | if(abac_list_size(ctxt->context_pl_clauses)) { |
---|
| 1497 | abac_pl_remove_credential(ctxt->context_pl_clauses); |
---|
| 1498 | char *cur; |
---|
| 1499 | abac_list_foreach(ctxt->context_pl_clauses, cur, |
---|
| 1500 | if(cur) free(cur); |
---|
| 1501 | ); |
---|
| 1502 | } |
---|
| 1503 | abac_list_free(ctxt->context_pl_clauses); |
---|
| 1504 | } |
---|
| 1505 | free(ctxt); |
---|
| 1506 | } |
---|
| 1507 | |
---|
| 1508 | void abac_context_set_no_partial_proof(abac_context_t *ctxt) |
---|
| 1509 | { abac_pl_set_no_partial(ctxt->pl); } |
---|
| 1510 | |
---|
| 1511 | void abac_context_set_want_partial_proof(abac_context_t *ctxt) |
---|
| 1512 | { abac_pl_set_want_partial(ctxt->pl); } |
---|
| 1513 | |
---|
| 1514 | /****************************************************************************/ |
---|
| 1515 | void abac_context_dump_clauses(abac_context_t *ctxt) |
---|
| 1516 | { |
---|
| 1517 | printf("===YAP clauses for [%s]===\n", ctxt->namespace); |
---|
| 1518 | if(ctxt->context_pl_clauses) { |
---|
| 1519 | char *cur; |
---|
| 1520 | abac_list_foreach(ctxt->context_pl_clauses, cur, |
---|
| 1521 | if(cur) { |
---|
| 1522 | printf("%s\n", cur); |
---|
| 1523 | } |
---|
| 1524 | ); |
---|
| 1525 | } else { |
---|
| 1526 | DEBUG_PRINTF("abac_contxt_dump_clauses: no yap clauses!!!!\n"); |
---|
| 1527 | } |
---|
| 1528 | printf("==========================\n"); |
---|
| 1529 | } |
---|
| 1530 | |
---|
| 1531 | |
---|
| 1532 | void abac_context_dump(abac_context_t *ctxt) |
---|
| 1533 | { |
---|
| 1534 | abac_stack_t *result = abac_context_dump_creds(ctxt); |
---|
| 1535 | int size = abac_stack_size(result); |
---|
| 1536 | int i=0; |
---|
| 1537 | |
---|
| 1538 | printf("CONTEXT: [%s]\n", ctxt->namespace); |
---|
| 1539 | |
---|
| 1540 | if(size) { |
---|
| 1541 | abac_credential_t *cur; |
---|
| 1542 | while(i<size) { |
---|
| 1543 | cur=(abac_credential_t *) abac_stack_pop(result); |
---|
| 1544 | abac_print_typed_cred_info(cur,NULL); |
---|
| 1545 | abac_credential_free(cur); |
---|
| 1546 | i++; |
---|
| 1547 | } |
---|
| 1548 | } |
---|
| 1549 | abac_stack_free(result); |
---|
| 1550 | |
---|
| 1551 | result = abac_context_dump_principals(ctxt); |
---|
| 1552 | size = abac_stack_size(result); |
---|
| 1553 | i=0; |
---|
| 1554 | if(size) { |
---|
| 1555 | abac_id_credential_t *cur; |
---|
| 1556 | while(i<size) { |
---|
| 1557 | cur=(abac_id_credential_t *) abac_stack_pop(result); |
---|
| 1558 | abac_print_prin_info(cur,NULL); |
---|
| 1559 | abac_id_credential_free(cur); |
---|
| 1560 | i++; |
---|
| 1561 | } |
---|
| 1562 | } |
---|
| 1563 | abac_stack_free(result); |
---|
| 1564 | abac_context_dump_clauses(ctxt); |
---|
| 1565 | |
---|
| 1566 | } |
---|