/**************************************************************************/ /* */ /* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */ /* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */ /* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/ /* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */ /* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */ /* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */ /* */ /* nx-X11, NX protocol compression and NX extensions to this software */ /* are copyright of the aforementioned persons and companies. */ /* */ /* Redistribution and use of the present software is allowed according */ /* to terms specified in the file LICENSE which comes in the source */ /* distribution. */ /* */ /* All rights reserved. */ /* */ /* NOTE: This software has received contributions from various other */ /* contributors, only the core maintainers and supporters are listed as */ /* copyright holders. Please contact us, if you feel you should be listed */ /* as copyright holder, as well. */ /* */ /**************************************************************************/ /* * Copyright © 2006 Keith Packard * * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that * the above copyright notice appear in all copies and that both that copyright * notice and this permission notice appear in supporting documentation, and * that the name of the copyright holders not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. The copyright holders make no representations * about the suitability of this software for any purpose. It is provided "as * is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE * OF THIS SOFTWARE. */ #include "randrstr.h" RESTYPE RRModeType; static Bool RRModeEqual(xRRModeInfo * a, xRRModeInfo * b) { if (a->width != b->width) return FALSE; if (a->height != b->height) return FALSE; if (a->dotClock != b->dotClock) return FALSE; if (a->hSyncStart != b->hSyncStart) return FALSE; if (a->hSyncEnd != b->hSyncEnd) return FALSE; if (a->hTotal != b->hTotal) return FALSE; if (a->hSkew != b->hSkew) return FALSE; if (a->vSyncStart != b->vSyncStart) return FALSE; if (a->vSyncEnd != b->vSyncEnd) return FALSE; if (a->vTotal != b->vTotal) return FALSE; if (a->nameLength != b->nameLength) return FALSE; if (a->modeFlags != b->modeFlags) return FALSE; return TRUE; } /* * Keep a list so it's easy to find modes in the resource database. */ static int num_modes; static RRModePtr *modes; static RRModePtr RRModeCreate(xRRModeInfo * modeInfo, const char *name, ScreenPtr userScreen) { RRModePtr mode, *newModes; if (!RRInit()) return NULL; mode = malloc(sizeof(RRModeRec) + modeInfo->nameLength + 1); if (!mode) return NULL; mode->refcnt = 1; mode->mode = *modeInfo; mode->name = (char *) (mode + 1); memcpy(mode->name, name, modeInfo->nameLength); mode->name[modeInfo->nameLength] = '\0'; mode->userScreen = userScreen; if (num_modes) newModes = reallocarray(modes, num_modes + 1, sizeof(RRModePtr)); else newModes = malloc(sizeof(RRModePtr)); if (!newModes) { free(mode); return NULL; } mode->mode.id = FakeClientID(0); if (!AddResource(mode->mode.id, RRModeType, (void *) mode)) { free(newModes); return NULL; } modes = newModes; modes[num_modes++] = mode; /* * give the caller a reference to this mode */ ++mode->refcnt; #ifdef DEBUG fprintf(stderr, "RRModeCreate: num_modes [%d] new mode [%s] ([%p]) refcnt [%d]\n", num_modes, mode->name, mode, mode->refcnt); #endif return mode; } static RRModePtr RRModeFindByName(const char *name, CARD16 nameLength) { int i; RRModePtr mode; for (i = 0; i < num_modes; i++) { mode = modes[i]; if (mode->mode.nameLength == nameLength && !memcmp(name, mode->name, nameLength)) { return mode; } } return NULL; } RRModePtr RRModeGet(xRRModeInfo * modeInfo, const char *name) { int i; for (i = 0; i < num_modes; i++) { RRModePtr mode = modes[i]; if (RRModeEqual(&mode->mode, modeInfo) && !memcmp(name, mode->name, modeInfo->nameLength)) { ++mode->refcnt; #ifdef DEBUG fprintf(stderr, "RRModeGet: return existing mode [%s] ([%p]) refcnt [%d]\n", mode->name, mode, mode->refcnt); #endif return mode; } } #ifdef DEBUG { RRModePtr mode = RRModeCreate(modeInfo, name, NULL); fprintf(stderr, "RRModeGet: return new mode [%s] ([%p]) refcnt [%d]\n", mode->name, mode, mode->refcnt); return mode; } #else return RRModeCreate(modeInfo, name, NULL); #endif } static RRModePtr RRModeCreateUser(ScreenPtr pScreen, xRRModeInfo * modeInfo, const char *name, int *error) { RRModePtr mode; mode = RRModeFindByName(name, modeInfo->nameLength); if (mode) { *error = BadName; return NULL; } mode = RRModeCreate(modeInfo, name, pScreen); if (!mode) { *error = BadAlloc; return NULL; } *error = Success; return mode; } RRModePtr * RRModesForScreen(ScreenPtr pScreen, int *num_ret) { rrScrPriv(pScreen); int o, c, m; RRModePtr *screen_modes; int num_screen_modes = 0; screen_modes = xallocarray((num_modes ? num_modes : 1), sizeof(RRModePtr)); if (!screen_modes) return NULL; /* * Add modes from all outputs */ for (o = 0; o < pScrPriv->numOutputs; o++) { RROutputPtr output = pScrPriv->outputs[o]; int n; for (m = 0; m < output->numModes + output->numUserModes; m++) { RRModePtr mode = (m < output->numModes ? output->modes[m] : output->userModes[m - output->numModes]); for (n = 0; n < num_screen_modes; n++) if (screen_modes[n] == mode) break; if (n == num_screen_modes) screen_modes[num_screen_modes++] = mode; } } /* * Add modes from all crtcs. The goal is to * make sure all available and active modes * are visible to the client */ for (c = 0; c < pScrPriv->numCrtcs; c++) { RRCrtcPtr crtc = pScrPriv->crtcs[c]; RRModePtr mode = crtc->mode; int n; if (!mode) continue; for (n = 0; n < num_screen_modes; n++) if (screen_modes[n] == mode) break; if (n == num_screen_modes) screen_modes[num_screen_modes++] = mode; } /* * Add all user modes for this screen */ for (m = 0; m < num_modes; m++) { RRModePtr mode = modes[m]; int n; if (mode->userScreen != pScreen) continue; for (n = 0; n < num_screen_modes; n++) if (screen_modes[n] == mode) break; if (n == num_screen_modes) screen_modes[num_screen_modes++] = mode; } *num_ret = num_screen_modes; return screen_modes; } void RRModeDestroy(RRModePtr mode) { int m; if (--mode->refcnt > 0) return; for (m = 0; m < num_modes; m++) { if (modes[m] == mode) { memmove(modes + m, modes + m + 1, (num_modes - m - 1) * sizeof(RRModePtr)); num_modes--; if (!num_modes) { free(modes); modes = NULL; } break; } } free(mode); } static int RRModeDestroyResource(void *value, XID pid) { RRModeDestroy((RRModePtr) value); return 1; } /* * Initialize mode type */ Bool RRModeInit(void) { assert(num_modes == 0); assert(modes == NULL); RRModeType = CreateNewResourceType(RRModeDestroyResource #ifndef NXAGENT_SERVER , "MODE" #endif ); if (!RRModeType) return FALSE; #ifdef NXAGENT_SERVER RegisterResourceName(RRModeType, "MODE"); #endif return TRUE; } /* * Initialize mode type error value */ void RRModeInitErrorValue(void) { #ifndef NXAGENT_SERVER SetResourceTypeErrorValue(RRModeType, RRErrorBase + BadRRMode); #endif } int ProcRRCreateMode(ClientPtr client) { REQUEST(xRRCreateModeReq); xRRCreateModeReply rep; WindowPtr pWin; ScreenPtr pScreen; xRRModeInfo *modeInfo; long units_after; char *name; int error, rc; RRModePtr mode; REQUEST_AT_LEAST_SIZE(xRRCreateModeReq); #ifndef NXAGENT_SERVER rc = dixLookupWindow(&pWin, stuff->window, client, DixGetAttrAccess); #else pWin = SecurityLookupWindow(stuff->window, client, DixReadAccess); rc = pWin ? Success : BadWindow; #endif if (rc != Success) return rc; pScreen = pWin->drawable.pScreen; modeInfo = &stuff->modeInfo; name = (char *) (stuff + 1); units_after = (stuff->length - bytes_to_int32(sizeof(xRRCreateModeReq))); /* check to make sure requested name fits within the data provided */ if (bytes_to_int32(modeInfo->nameLength) > units_after) return BadLength; mode = RRModeCreateUser(pScreen, modeInfo, name, &error); if (!mode) return error; rep = (xRRCreateModeReply) { .type = X_Reply, .sequenceNumber = client->sequence, .length = 0, .mode = mode->mode.id }; if (client->swapped) { swaps(&rep.sequenceNumber); swapl(&rep.length); swapl(&rep.mode); } WriteToClient(client, sizeof(xRRCreateModeReply), &rep); /* Drop out reference to this mode */ RRModeDestroy(mode); return Success; } int ProcRRDestroyMode(ClientPtr client) { REQUEST(xRRDestroyModeReq); RRModePtr mode; REQUEST_SIZE_MATCH(xRRDestroyModeReq); VERIFY_RR_MODE(stuff->mode, mode, DixDestroyAccess); if (!mode->userScreen) return BadMatch; if (mode->refcnt > 1) return BadAccess; FreeResource(stuff->mode, 0); return Success; } int ProcRRAddOutputMode(ClientPtr client) { REQUEST(xRRAddOutputModeReq); RRModePtr mode; RROutputPtr output; REQUEST_SIZE_MATCH(xRRAddOutputModeReq); VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); VERIFY_RR_MODE(stuff->mode, mode, DixUseAccess); return RROutputAddUserMode(output, mode); } int ProcRRDeleteOutputMode(ClientPtr client) { REQUEST(xRRDeleteOutputModeReq); RRModePtr mode; RROutputPtr output; REQUEST_SIZE_MATCH(xRRDeleteOutputModeReq); VERIFY_RR_OUTPUT(stuff->output, output, DixReadAccess); VERIFY_RR_MODE(stuff->mode, mode, DixUseAccess); return RROutputDeleteUserMode(output, mode); }