| 1 | /************************************************************ |
| 2 | |
| 3 | Author: Eamon Walsh <ewalsh@tycho.nsa.gov> |
| 4 | |
| 5 | Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | documentation for any purpose is hereby granted without fee, provided that |
| 7 | this permission notice appear in supporting documentation. This permission |
| 8 | notice shall be included in all copies or substantial portions of the |
| 9 | Software. |
| 10 | |
| 11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 12 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 14 | AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 15 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 16 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 17 | |
| 18 | ********************************************************/ |
| 19 | |
| 20 | #ifdef HAVE_DIX_CONFIG_H |
| 21 | #include <dix-config.h> |
| 22 | #endif |
| 23 | |
| 24 | #include "selection.h" |
| 25 | #include "inputstr.h" |
| 26 | #include "windowstr.h" |
| 27 | #include "propertyst.h" |
| 28 | #include "extnsionst.h" |
| 29 | #include "extinit.h" |
| 30 | #include "xselinuxint.h" |
| 31 | |
| 32 | #define CTX_DEV offsetof(SELinuxSubjectRec, dev_create_sid) |
| 33 | #define CTX_WIN offsetof(SELinuxSubjectRec, win_create_sid) |
| 34 | #define CTX_PRP offsetof(SELinuxSubjectRec, prp_create_sid) |
| 35 | #define CTX_SEL offsetof(SELinuxSubjectRec, sel_create_sid) |
| 36 | #define USE_PRP offsetof(SELinuxSubjectRec, prp_use_sid) |
| 37 | #define USE_SEL offsetof(SELinuxSubjectRec, sel_use_sid) |
| 38 | |
| 39 | typedef struct { |
| 40 | security_context_t octx; |
| 41 | security_context_t dctx; |
| 42 | CARD32 octx_len; |
| 43 | CARD32 dctx_len; |
| 44 | CARD32 id; |
| 45 | } SELinuxListItemRec; |
| 46 | |
| 47 | /* |
| 48 | * Extension Dispatch |
| 49 | */ |
| 50 | |
| 51 | static security_context_t |
| 52 | SELinuxCopyContext(char *ptr, unsigned len) |
| 53 | { |
| 54 | security_context_t copy = malloc(len + 1); |
| 55 | |
| 56 | if (!copy) |
| 57 | return NULL; |
| 58 | strncpy(copy, ptr, len); |
| 59 | copy[len] = '\0'; |
| 60 | return copy; |
| 61 | } |
| 62 | |
| 63 | static int |
| 64 | ProcSELinuxQueryVersion(ClientPtr client) |
| 65 | { |
| 66 | SELinuxQueryVersionReply rep = { |
| 67 | .type = X_Reply, |
| 68 | .sequenceNumber = client->sequence, |
| 69 | .length = 0, |
| 70 | .server_major = SELINUX_MAJOR_VERSION, |
| 71 | .server_minor = SELINUX_MINOR_VERSION |
| 72 | }; |
| 73 | if (client->swapped) { |
| 74 | swaps(&rep.sequenceNumber); |
| 75 | swapl(&rep.length); |
| 76 | swaps(&rep.server_major); |
| 77 | swaps(&rep.server_minor); |
| 78 | } |
| 79 | WriteToClient(client, sizeof(rep), &rep); |
| 80 | return Success; |
| 81 | } |
| 82 | |
| 83 | static int |
| 84 | SELinuxSendContextReply(ClientPtr client, security_id_t sid) |
| 85 | { |
| 86 | SELinuxGetContextReply rep; |
| 87 | security_context_t ctx = NULL; |
| 88 | int len = 0; |
| 89 | |
| 90 | if (sid) { |
| 91 | if (avc_sid_to_context_raw(sid, &ctx) < 0) |
| 92 | return BadValue; |
| 93 | len = strlen(ctx) + 1; |
| 94 | } |
| 95 | |
| 96 | rep = (SELinuxGetContextReply) { |
| 97 | .type = X_Reply, |
| 98 | .sequenceNumber = client->sequence, |
| 99 | .length = bytes_to_int32(len), |
| 100 | .context_len = len |
| 101 | }; |
| 102 | |
| 103 | if (client->swapped) { |
| 104 | swapl(&rep.length); |
| 105 | swaps(&rep.sequenceNumber); |
| 106 | swapl(&rep.context_len); |
| 107 | } |
| 108 | |
| 109 | WriteToClient(client, sizeof(SELinuxGetContextReply), &rep); |
| 110 | WriteToClient(client, len, ctx); |
| 111 | freecon(ctx); |
| 112 | return Success; |
| 113 | } |
| 114 | |
| 115 | static int |
| 116 | ProcSELinuxSetCreateContext(ClientPtr client, unsigned offset) |
| 117 | { |
| 118 | PrivateRec **privPtr = &client->devPrivates; |
| 119 | security_id_t *pSid; |
| 120 | security_context_t ctx = NULL; |
| 121 | char *ptr; |
| 122 | int rc; |
| 123 | |
| 124 | REQUEST(SELinuxSetCreateContextReq); |
| 125 | REQUEST_FIXED_SIZE(SELinuxSetCreateContextReq, stuff->context_len); |
| 126 | |
| 127 | if (stuff->context_len > 0) { |
| 128 | ctx = SELinuxCopyContext((char *) (stuff + 1), stuff->context_len); |
| 129 | if (!ctx) |
| 130 | return BadAlloc; |
| 131 | } |
| 132 | |
| 133 | ptr = dixLookupPrivate(privPtr, subjectKey); |
| 134 | pSid = (security_id_t *) (ptr + offset); |
| 135 | *pSid = NULL; |
| 136 | |
| 137 | rc = Success; |
| 138 | if (stuff->context_len > 0) { |
| 139 | if (security_check_context_raw(ctx) < 0 || |
| 140 | avc_context_to_sid_raw(ctx, pSid) < 0) |
| 141 | rc = BadValue; |
| 142 | } |
| 143 | |
| 144 | free(ctx); |
| 145 | return rc; |
| 146 | } |
| 147 | |
| 148 | static int |
| 149 | ProcSELinuxGetCreateContext(ClientPtr client, unsigned offset) |
| 150 | { |
| 151 | security_id_t *pSid; |
| 152 | char *ptr; |
| 153 | |
| 154 | REQUEST_SIZE_MATCH(SELinuxGetCreateContextReq); |
| 155 | |
| 156 | if (offset == CTX_DEV) |
| 157 | ptr = dixLookupPrivate(&serverClient->devPrivates, subjectKey); |
| 158 | else |
| 159 | ptr = dixLookupPrivate(&client->devPrivates, subjectKey); |
| 160 | |
| 161 | pSid = (security_id_t *) (ptr + offset); |
| 162 | return SELinuxSendContextReply(client, *pSid); |
| 163 | } |
| 164 | |
| 165 | static int |
| 166 | ProcSELinuxSetDeviceContext(ClientPtr client) |
| 167 | { |
| 168 | security_context_t ctx; |
| 169 | security_id_t sid; |
| 170 | DeviceIntPtr dev; |
| 171 | SELinuxSubjectRec *subj; |
| 172 | SELinuxObjectRec *obj; |
| 173 | int rc; |
| 174 | |
| 175 | REQUEST(SELinuxSetContextReq); |
| 176 | REQUEST_FIXED_SIZE(SELinuxSetContextReq, stuff->context_len); |
| 177 | |
| 178 | if (stuff->context_len < 1) |
| 179 | return BadLength; |
| 180 | ctx = SELinuxCopyContext((char *) (stuff + 1), stuff->context_len); |
| 181 | if (!ctx) |
| 182 | return BadAlloc; |
| 183 | |
| 184 | rc = dixLookupDevice(&dev, stuff->id, client, DixManageAccess); |
| 185 | if (rc != Success) |
| 186 | goto out; |
| 187 | |
| 188 | if (security_check_context_raw(ctx) < 0 || |
| 189 | avc_context_to_sid_raw(ctx, &sid) < 0) { |
| 190 | rc = BadValue; |
| 191 | goto out; |
| 192 | } |
| 193 | |
| 194 | subj = dixLookupPrivate(&dev->devPrivates, subjectKey); |
| 195 | subj->sid = sid; |
| 196 | obj = dixLookupPrivate(&dev->devPrivates, objectKey); |
| 197 | obj->sid = sid; |
| 198 | |
| 199 | rc = Success; |
| 200 | out: |
| 201 | free(ctx); |
| 202 | return rc; |
| 203 | } |
| 204 | |
| 205 | static int |
| 206 | ProcSELinuxGetDeviceContext(ClientPtr client) |
| 207 | { |
| 208 | DeviceIntPtr dev; |
| 209 | SELinuxSubjectRec *subj; |
| 210 | int rc; |
| 211 | |
| 212 | REQUEST(SELinuxGetContextReq); |
| 213 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 214 | |
| 215 | rc = dixLookupDevice(&dev, stuff->id, client, DixGetAttrAccess); |
| 216 | if (rc != Success) |
| 217 | return rc; |
| 218 | |
| 219 | subj = dixLookupPrivate(&dev->devPrivates, subjectKey); |
| 220 | return SELinuxSendContextReply(client, subj->sid); |
| 221 | } |
| 222 | |
| 223 | static int |
| 224 | ProcSELinuxGetDrawableContext(ClientPtr client) |
| 225 | { |
| 226 | DrawablePtr pDraw; |
| 227 | PrivateRec **privatePtr; |
| 228 | SELinuxObjectRec *obj; |
| 229 | int rc; |
| 230 | |
| 231 | REQUEST(SELinuxGetContextReq); |
| 232 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 233 | |
| 234 | rc = dixLookupDrawable(&pDraw, stuff->id, client, 0, DixGetAttrAccess); |
| 235 | if (rc != Success) |
| 236 | return rc; |
| 237 | |
| 238 | if (pDraw->type == DRAWABLE_PIXMAP) |
| 239 | privatePtr = &((PixmapPtr) pDraw)->devPrivates; |
| 240 | else |
| 241 | privatePtr = &((WindowPtr) pDraw)->devPrivates; |
| 242 | |
| 243 | obj = dixLookupPrivate(privatePtr, objectKey); |
| 244 | return SELinuxSendContextReply(client, obj->sid); |
| 245 | } |
| 246 | |
| 247 | static int |
| 248 | ProcSELinuxGetPropertyContext(ClientPtr client, pointer privKey) |
| 249 | { |
| 250 | WindowPtr pWin; |
| 251 | PropertyPtr pProp; |
| 252 | SELinuxObjectRec *obj; |
| 253 | int rc; |
| 254 | |
| 255 | REQUEST(SELinuxGetPropertyContextReq); |
| 256 | REQUEST_SIZE_MATCH(SELinuxGetPropertyContextReq); |
| 257 | |
| 258 | rc = dixLookupWindow(&pWin, stuff->window, client, DixGetPropAccess); |
| 259 | if (rc != Success) |
| 260 | return rc; |
| 261 | |
| 262 | rc = dixLookupProperty(&pProp, pWin, stuff->property, client, |
| 263 | DixGetAttrAccess); |
| 264 | if (rc != Success) |
| 265 | return rc; |
| 266 | |
| 267 | obj = dixLookupPrivate(&pProp->devPrivates, privKey); |
| 268 | return SELinuxSendContextReply(client, obj->sid); |
| 269 | } |
| 270 | |
| 271 | static int |
| 272 | ProcSELinuxGetSelectionContext(ClientPtr client, pointer privKey) |
| 273 | { |
| 274 | Selection *pSel; |
| 275 | SELinuxObjectRec *obj; |
| 276 | int rc; |
| 277 | |
| 278 | REQUEST(SELinuxGetContextReq); |
| 279 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 280 | |
| 281 | rc = dixLookupSelection(&pSel, stuff->id, client, DixGetAttrAccess); |
| 282 | if (rc != Success) |
| 283 | return rc; |
| 284 | |
| 285 | obj = dixLookupPrivate(&pSel->devPrivates, privKey); |
| 286 | return SELinuxSendContextReply(client, obj->sid); |
| 287 | } |
| 288 | |
| 289 | static int |
| 290 | ProcSELinuxGetClientContext(ClientPtr client) |
| 291 | { |
| 292 | ClientPtr target; |
| 293 | SELinuxSubjectRec *subj; |
| 294 | int rc; |
| 295 | |
| 296 | REQUEST(SELinuxGetContextReq); |
| 297 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 298 | |
| 299 | rc = dixLookupClient(&target, stuff->id, client, DixGetAttrAccess); |
| 300 | if (rc != Success) |
| 301 | return rc; |
| 302 | |
| 303 | subj = dixLookupPrivate(&target->devPrivates, subjectKey); |
| 304 | return SELinuxSendContextReply(client, subj->sid); |
| 305 | } |
| 306 | |
| 307 | static int |
| 308 | SELinuxPopulateItem(SELinuxListItemRec * i, PrivateRec ** privPtr, CARD32 id, |
| 309 | int *size) |
| 310 | { |
| 311 | SELinuxObjectRec *obj = dixLookupPrivate(privPtr, objectKey); |
| 312 | SELinuxObjectRec *data = dixLookupPrivate(privPtr, dataKey); |
| 313 | |
| 314 | if (avc_sid_to_context_raw(obj->sid, &i->octx) < 0) |
| 315 | return BadValue; |
| 316 | if (avc_sid_to_context_raw(data->sid, &i->dctx) < 0) |
| 317 | return BadValue; |
| 318 | |
| 319 | i->id = id; |
| 320 | i->octx_len = bytes_to_int32(strlen(i->octx) + 1); |
| 321 | i->dctx_len = bytes_to_int32(strlen(i->dctx) + 1); |
| 322 | |
| 323 | *size += i->octx_len + i->dctx_len + 3; |
| 324 | return Success; |
| 325 | } |
| 326 | |
| 327 | static void |
| 328 | SELinuxFreeItems(SELinuxListItemRec * items, int count) |
| 329 | { |
| 330 | int k; |
| 331 | |
| 332 | for (k = 0; k < count; k++) { |
| 333 | freecon(items[k].octx); |
| 334 | freecon(items[k].dctx); |
| 335 | } |
| 336 | free(items); |
| 337 | } |
| 338 | |
| 339 | static int |
| 340 | SELinuxSendItemsToClient(ClientPtr client, SELinuxListItemRec * items, |
| 341 | int size, int count) |
| 342 | { |
| 343 | int rc, k, pos = 0; |
| 344 | SELinuxListItemsReply rep; |
| 345 | CARD32 *buf; |
| 346 | |
| 347 | buf = calloc(size, sizeof(CARD32)); |
| 348 | if (size && !buf) { |
| 349 | rc = BadAlloc; |
| 350 | goto out; |
| 351 | } |
| 352 | |
| 353 | /* Fill in the buffer */ |
| 354 | for (k = 0; k < count; k++) { |
| 355 | buf[pos] = items[k].id; |
| 356 | if (client->swapped) |
| 357 | swapl(buf + pos); |
| 358 | pos++; |
| 359 | |
| 360 | buf[pos] = items[k].octx_len * 4; |
| 361 | if (client->swapped) |
| 362 | swapl(buf + pos); |
| 363 | pos++; |
| 364 | |
| 365 | buf[pos] = items[k].dctx_len * 4; |
| 366 | if (client->swapped) |
| 367 | swapl(buf + pos); |
| 368 | pos++; |
| 369 | |
| 370 | memcpy((char *) (buf + pos), items[k].octx, strlen(items[k].octx) + 1); |
| 371 | pos += items[k].octx_len; |
| 372 | memcpy((char *) (buf + pos), items[k].dctx, strlen(items[k].dctx) + 1); |
| 373 | pos += items[k].dctx_len; |
| 374 | } |
| 375 | |
| 376 | /* Send reply to client */ |
| 377 | rep = (SELinuxListItemsReply) { |
| 378 | .type = X_Reply, |
| 379 | .sequenceNumber = client->sequence, |
| 380 | .length = size, |
| 381 | .count = count |
| 382 | }; |
| 383 | |
| 384 | if (client->swapped) { |
| 385 | swapl(&rep.length); |
| 386 | swaps(&rep.sequenceNumber); |
| 387 | swapl(&rep.count); |
| 388 | } |
| 389 | |
| 390 | WriteToClient(client, sizeof(SELinuxListItemsReply), &rep); |
| 391 | WriteToClient(client, size * 4, buf); |
| 392 | |
| 393 | /* Free stuff and return */ |
| 394 | rc = Success; |
| 395 | free(buf); |
| 396 | out: |
| 397 | SELinuxFreeItems(items, count); |
| 398 | return rc; |
| 399 | } |
| 400 | |
| 401 | static int |
| 402 | ProcSELinuxListProperties(ClientPtr client) |
| 403 | { |
| 404 | WindowPtr pWin; |
| 405 | PropertyPtr pProp; |
| 406 | SELinuxListItemRec *items; |
| 407 | int rc, count, size, i; |
| 408 | CARD32 id; |
| 409 | |
| 410 | REQUEST(SELinuxGetContextReq); |
| 411 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 412 | |
| 413 | rc = dixLookupWindow(&pWin, stuff->id, client, DixListPropAccess); |
| 414 | if (rc != Success) |
| 415 | return rc; |
| 416 | |
| 417 | /* Count the number of properties and allocate items */ |
| 418 | count = 0; |
| 419 | for (pProp = wUserProps(pWin); pProp; pProp = pProp->next) |
| 420 | count++; |
| 421 | items = calloc(count, sizeof(SELinuxListItemRec)); |
| 422 | if (count && !items) |
| 423 | return BadAlloc; |
| 424 | |
| 425 | /* Fill in the items and calculate size */ |
| 426 | i = 0; |
| 427 | size = 0; |
| 428 | for (pProp = wUserProps(pWin); pProp; pProp = pProp->next) { |
| 429 | id = pProp->propertyName; |
| 430 | rc = SELinuxPopulateItem(items + i, &pProp->devPrivates, id, &size); |
| 431 | if (rc != Success) { |
| 432 | SELinuxFreeItems(items, count); |
| 433 | return rc; |
| 434 | } |
| 435 | i++; |
| 436 | } |
| 437 | |
| 438 | return SELinuxSendItemsToClient(client, items, size, count); |
| 439 | } |
| 440 | |
| 441 | static int |
| 442 | ProcSELinuxListSelections(ClientPtr client) |
| 443 | { |
| 444 | Selection *pSel; |
| 445 | SELinuxListItemRec *items; |
| 446 | int rc, count, size, i; |
| 447 | CARD32 id; |
| 448 | |
| 449 | REQUEST_SIZE_MATCH(SELinuxGetCreateContextReq); |
| 450 | |
| 451 | /* Count the number of selections and allocate items */ |
| 452 | count = 0; |
| 453 | for (pSel = CurrentSelections; pSel; pSel = pSel->next) |
| 454 | count++; |
| 455 | items = calloc(count, sizeof(SELinuxListItemRec)); |
| 456 | if (count && !items) |
| 457 | return BadAlloc; |
| 458 | |
| 459 | /* Fill in the items and calculate size */ |
| 460 | i = 0; |
| 461 | size = 0; |
| 462 | for (pSel = CurrentSelections; pSel; pSel = pSel->next) { |
| 463 | id = pSel->selection; |
| 464 | rc = SELinuxPopulateItem(items + i, &pSel->devPrivates, id, &size); |
| 465 | if (rc != Success) { |
| 466 | SELinuxFreeItems(items, count); |
| 467 | return rc; |
| 468 | } |
| 469 | i++; |
| 470 | } |
| 471 | |
| 472 | return SELinuxSendItemsToClient(client, items, size, count); |
| 473 | } |
| 474 | |
| 475 | static int |
| 476 | ProcSELinuxDispatch(ClientPtr client) |
| 477 | { |
| 478 | REQUEST(xReq); |
| 479 | switch (stuff->data) { |
| 480 | case X_SELinuxQueryVersion: |
| 481 | return ProcSELinuxQueryVersion(client); |
| 482 | case X_SELinuxSetDeviceCreateContext: |
| 483 | return ProcSELinuxSetCreateContext(client, CTX_DEV); |
| 484 | case X_SELinuxGetDeviceCreateContext: |
| 485 | return ProcSELinuxGetCreateContext(client, CTX_DEV); |
| 486 | case X_SELinuxSetDeviceContext: |
| 487 | return ProcSELinuxSetDeviceContext(client); |
| 488 | case X_SELinuxGetDeviceContext: |
| 489 | return ProcSELinuxGetDeviceContext(client); |
| 490 | case X_SELinuxSetDrawableCreateContext: |
| 491 | return ProcSELinuxSetCreateContext(client, CTX_WIN); |
| 492 | case X_SELinuxGetDrawableCreateContext: |
| 493 | return ProcSELinuxGetCreateContext(client, CTX_WIN); |
| 494 | case X_SELinuxGetDrawableContext: |
| 495 | return ProcSELinuxGetDrawableContext(client); |
| 496 | case X_SELinuxSetPropertyCreateContext: |
| 497 | return ProcSELinuxSetCreateContext(client, CTX_PRP); |
| 498 | case X_SELinuxGetPropertyCreateContext: |
| 499 | return ProcSELinuxGetCreateContext(client, CTX_PRP); |
| 500 | case X_SELinuxSetPropertyUseContext: |
| 501 | return ProcSELinuxSetCreateContext(client, USE_PRP); |
| 502 | case X_SELinuxGetPropertyUseContext: |
| 503 | return ProcSELinuxGetCreateContext(client, USE_PRP); |
| 504 | case X_SELinuxGetPropertyContext: |
| 505 | return ProcSELinuxGetPropertyContext(client, objectKey); |
| 506 | case X_SELinuxGetPropertyDataContext: |
| 507 | return ProcSELinuxGetPropertyContext(client, dataKey); |
| 508 | case X_SELinuxListProperties: |
| 509 | return ProcSELinuxListProperties(client); |
| 510 | case X_SELinuxSetSelectionCreateContext: |
| 511 | return ProcSELinuxSetCreateContext(client, CTX_SEL); |
| 512 | case X_SELinuxGetSelectionCreateContext: |
| 513 | return ProcSELinuxGetCreateContext(client, CTX_SEL); |
| 514 | case X_SELinuxSetSelectionUseContext: |
| 515 | return ProcSELinuxSetCreateContext(client, USE_SEL); |
| 516 | case X_SELinuxGetSelectionUseContext: |
| 517 | return ProcSELinuxGetCreateContext(client, USE_SEL); |
| 518 | case X_SELinuxGetSelectionContext: |
| 519 | return ProcSELinuxGetSelectionContext(client, objectKey); |
| 520 | case X_SELinuxGetSelectionDataContext: |
| 521 | return ProcSELinuxGetSelectionContext(client, dataKey); |
| 522 | case X_SELinuxListSelections: |
| 523 | return ProcSELinuxListSelections(client); |
| 524 | case X_SELinuxGetClientContext: |
| 525 | return ProcSELinuxGetClientContext(client); |
| 526 | default: |
| 527 | return BadRequest; |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | static int |
| 532 | SProcSELinuxQueryVersion(ClientPtr client) |
| 533 | { |
| 534 | return ProcSELinuxQueryVersion(client); |
| 535 | } |
| 536 | |
| 537 | static int |
| 538 | SProcSELinuxSetCreateContext(ClientPtr client, unsigned offset) |
| 539 | { |
| 540 | REQUEST(SELinuxSetCreateContextReq); |
| 541 | |
| 542 | REQUEST_AT_LEAST_SIZE(SELinuxSetCreateContextReq); |
| 543 | swapl(&stuff->context_len); |
| 544 | return ProcSELinuxSetCreateContext(client, offset); |
| 545 | } |
| 546 | |
| 547 | static int |
| 548 | SProcSELinuxSetDeviceContext(ClientPtr client) |
| 549 | { |
| 550 | REQUEST(SELinuxSetContextReq); |
| 551 | |
| 552 | REQUEST_AT_LEAST_SIZE(SELinuxSetContextReq); |
| 553 | swapl(&stuff->id); |
| 554 | swapl(&stuff->context_len); |
| 555 | return ProcSELinuxSetDeviceContext(client); |
| 556 | } |
| 557 | |
| 558 | static int |
| 559 | SProcSELinuxGetDeviceContext(ClientPtr client) |
| 560 | { |
| 561 | REQUEST(SELinuxGetContextReq); |
| 562 | |
| 563 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 564 | swapl(&stuff->id); |
| 565 | return ProcSELinuxGetDeviceContext(client); |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | SProcSELinuxGetDrawableContext(ClientPtr client) |
| 570 | { |
| 571 | REQUEST(SELinuxGetContextReq); |
| 572 | |
| 573 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 574 | swapl(&stuff->id); |
| 575 | return ProcSELinuxGetDrawableContext(client); |
| 576 | } |
| 577 | |
| 578 | static int |
| 579 | SProcSELinuxGetPropertyContext(ClientPtr client, pointer privKey) |
| 580 | { |
| 581 | REQUEST(SELinuxGetPropertyContextReq); |
| 582 | |
| 583 | REQUEST_SIZE_MATCH(SELinuxGetPropertyContextReq); |
| 584 | swapl(&stuff->window); |
| 585 | swapl(&stuff->property); |
| 586 | return ProcSELinuxGetPropertyContext(client, privKey); |
| 587 | } |
| 588 | |
| 589 | static int |
| 590 | SProcSELinuxGetSelectionContext(ClientPtr client, pointer privKey) |
| 591 | { |
| 592 | REQUEST(SELinuxGetContextReq); |
| 593 | |
| 594 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 595 | swapl(&stuff->id); |
| 596 | return ProcSELinuxGetSelectionContext(client, privKey); |
| 597 | } |
| 598 | |
| 599 | static int |
| 600 | SProcSELinuxListProperties(ClientPtr client) |
| 601 | { |
| 602 | REQUEST(SELinuxGetContextReq); |
| 603 | |
| 604 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 605 | swapl(&stuff->id); |
| 606 | return ProcSELinuxListProperties(client); |
| 607 | } |
| 608 | |
| 609 | static int |
| 610 | SProcSELinuxGetClientContext(ClientPtr client) |
| 611 | { |
| 612 | REQUEST(SELinuxGetContextReq); |
| 613 | |
| 614 | REQUEST_SIZE_MATCH(SELinuxGetContextReq); |
| 615 | swapl(&stuff->id); |
| 616 | return ProcSELinuxGetClientContext(client); |
| 617 | } |
| 618 | |
| 619 | static int |
| 620 | SProcSELinuxDispatch(ClientPtr client) |
| 621 | { |
| 622 | REQUEST(xReq); |
| 623 | |
| 624 | swaps(&stuff->length); |
| 625 | |
| 626 | switch (stuff->data) { |
| 627 | case X_SELinuxQueryVersion: |
| 628 | return SProcSELinuxQueryVersion(client); |
| 629 | case X_SELinuxSetDeviceCreateContext: |
| 630 | return SProcSELinuxSetCreateContext(client, CTX_DEV); |
| 631 | case X_SELinuxGetDeviceCreateContext: |
| 632 | return ProcSELinuxGetCreateContext(client, CTX_DEV); |
| 633 | case X_SELinuxSetDeviceContext: |
| 634 | return SProcSELinuxSetDeviceContext(client); |
| 635 | case X_SELinuxGetDeviceContext: |
| 636 | return SProcSELinuxGetDeviceContext(client); |
| 637 | case X_SELinuxSetDrawableCreateContext: |
| 638 | return SProcSELinuxSetCreateContext(client, CTX_WIN); |
| 639 | case X_SELinuxGetDrawableCreateContext: |
| 640 | return ProcSELinuxGetCreateContext(client, CTX_WIN); |
| 641 | case X_SELinuxGetDrawableContext: |
| 642 | return SProcSELinuxGetDrawableContext(client); |
| 643 | case X_SELinuxSetPropertyCreateContext: |
| 644 | return SProcSELinuxSetCreateContext(client, CTX_PRP); |
| 645 | case X_SELinuxGetPropertyCreateContext: |
| 646 | return ProcSELinuxGetCreateContext(client, CTX_PRP); |
| 647 | case X_SELinuxSetPropertyUseContext: |
| 648 | return SProcSELinuxSetCreateContext(client, USE_PRP); |
| 649 | case X_SELinuxGetPropertyUseContext: |
| 650 | return ProcSELinuxGetCreateContext(client, USE_PRP); |
| 651 | case X_SELinuxGetPropertyContext: |
| 652 | return SProcSELinuxGetPropertyContext(client, objectKey); |
| 653 | case X_SELinuxGetPropertyDataContext: |
| 654 | return SProcSELinuxGetPropertyContext(client, dataKey); |
| 655 | case X_SELinuxListProperties: |
| 656 | return SProcSELinuxListProperties(client); |
| 657 | case X_SELinuxSetSelectionCreateContext: |
| 658 | return SProcSELinuxSetCreateContext(client, CTX_SEL); |
| 659 | case X_SELinuxGetSelectionCreateContext: |
| 660 | return ProcSELinuxGetCreateContext(client, CTX_SEL); |
| 661 | case X_SELinuxSetSelectionUseContext: |
| 662 | return SProcSELinuxSetCreateContext(client, USE_SEL); |
| 663 | case X_SELinuxGetSelectionUseContext: |
| 664 | return ProcSELinuxGetCreateContext(client, USE_SEL); |
| 665 | case X_SELinuxGetSelectionContext: |
| 666 | return SProcSELinuxGetSelectionContext(client, objectKey); |
| 667 | case X_SELinuxGetSelectionDataContext: |
| 668 | return SProcSELinuxGetSelectionContext(client, dataKey); |
| 669 | case X_SELinuxListSelections: |
| 670 | return ProcSELinuxListSelections(client); |
| 671 | case X_SELinuxGetClientContext: |
| 672 | return SProcSELinuxGetClientContext(client); |
| 673 | default: |
| 674 | return BadRequest; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | /* |
| 679 | * Extension Setup / Teardown |
| 680 | */ |
| 681 | |
| 682 | static void |
| 683 | SELinuxResetProc(ExtensionEntry * extEntry) |
| 684 | { |
| 685 | SELinuxFlaskReset(); |
| 686 | SELinuxLabelReset(); |
| 687 | } |
| 688 | |
| 689 | void |
| 690 | SELinuxExtensionInit(void) |
| 691 | { |
| 692 | ExtensionEntry *extEntry; |
| 693 | |
| 694 | /* Check SELinux mode on system, configuration file, and boolean */ |
| 695 | if (!is_selinux_enabled()) { |
| 696 | LogMessage(X_INFO, "SELinux: Disabled on system\n"); |
| 697 | return; |
| 698 | } |
| 699 | if (selinuxEnforcingState == SELINUX_MODE_DISABLED) { |
| 700 | LogMessage(X_INFO, "SELinux: Disabled in configuration file\n"); |
| 701 | return; |
| 702 | } |
| 703 | if (!security_get_boolean_active("xserver_object_manager")) { |
| 704 | LogMessage(X_INFO, "SELinux: Disabled by boolean\n"); |
| 705 | return; |
| 706 | } |
| 707 | |
| 708 | /* Set up XACE hooks */ |
| 709 | SELinuxLabelInit(); |
| 710 | SELinuxFlaskInit(); |
| 711 | |
| 712 | /* Add extension to server */ |
| 713 | extEntry = AddExtension(SELINUX_EXTENSION_NAME, |
| 714 | SELinuxNumberEvents, SELinuxNumberErrors, |
| 715 | ProcSELinuxDispatch, SProcSELinuxDispatch, |
| 716 | SELinuxResetProc, StandardMinorOpcode); |
| 717 | |
| 718 | AddExtensionAlias("Flask", extEntry); |
| 719 | } |