/* $Xorg: XSecurity.c,v 1.5 2000/08/17 19:45:51 cpqbld Exp $ */ /* Copyright 1996, 1998 The Open Group All Rights Reserved. The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Except as contained in this notice, the name of The Open Group shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from The Open Group. */ /* $XFree86: xc/lib/Xext/XSecurity.c,v 1.3 2001/01/17 19:42:46 dawes Exp $ */ #include #include #include "Xext.h" #include "extutil.h" #include "securstr.h" static XExtensionInfo _Security_info_data; static XExtensionInfo *Security_info = &_Security_info_data; static char *Security_extension_name = SECURITY_EXTENSION_NAME; #define SecurityCheckExtension(dpy,i,val) \ XextCheckExtension (dpy, i, Security_extension_name, val) #define SecuritySimpleCheckExtension(dpy,i) \ XextSimpleCheckExtension (dpy, i, Security_extension_name) #define SecurityGetReq(name,req,info) GetReq (name, req); \ req->reqType = info->codes->major_opcode; \ req->securityReqType = X_##name; /***************************************************************************** * * * private utility routines * * * *****************************************************************************/ /* * find_display - locate the display info block */ static int close_display(); static Bool wire_to_event(); static Status event_to_wire(); static char *error_string(); static XExtensionHooks Security_extension_hooks = { NULL, /* create_gc */ NULL, /* copy_gc */ NULL, /* flush_gc */ NULL, /* free_gc */ NULL, /* create_font */ NULL, /* free_font */ close_display, /* close_display */ wire_to_event, /* wire_to_event */ event_to_wire, /* event_to_wire */ NULL, /* error */ error_string /* error_string */ }; static char *security_error_list[] = { "BadAuthorization" "BadAuthorizationProtocol" }; static XEXT_GENERATE_FIND_DISPLAY (find_display, Security_info, Security_extension_name, &Security_extension_hooks, XSecurityNumberEvents, NULL) static XEXT_GENERATE_CLOSE_DISPLAY (close_display, Security_info) static XEXT_GENERATE_ERROR_STRING(error_string, Security_extension_name, XSecurityNumberErrors, security_error_list) static Bool wire_to_event(dpy, event, wire) Display *dpy; XEvent *event; xEvent *wire; { XExtDisplayInfo *info = find_display(dpy); SecurityCheckExtension (dpy, info, False); switch ((wire->u.u.type & 0x7F) - info->codes->first_event) { case XSecurityAuthorizationRevoked: { xSecurityAuthorizationRevokedEvent *rwire = (xSecurityAuthorizationRevokedEvent *)wire; XSecurityAuthorizationRevokedEvent *revent = (XSecurityAuthorizationRevokedEvent *)event; revent->type = rwire->type & 0x7F; revent->serial = _XSetLastRequestRead(dpy, (xGenericReply *) wire); revent->send_event = (rwire->type & 0x80) != 0; revent->display = dpy; revent->auth_id = rwire->authId; return True; } } return False; } static Status event_to_wire(dpy, event, wire) Display *dpy; XEvent *event; xEvent *wire; { XExtDisplayInfo *info = find_display(dpy); SecurityCheckExtension(dpy, info, False); switch ((event->type & 0x7F) - info->codes->first_event) { case XSecurityAuthorizationRevoked: { xSecurityAuthorizationRevokedEvent *rwire = (xSecurityAuthorizationRevokedEvent *)wire; XSecurityAuthorizationRevokedEvent *revent = (XSecurityAuthorizationRevokedEvent *)event; rwire->type = revent->type | (revent->send_event ? 0x80 : 0); rwire->sequenceNumber = revent->serial & 0xFFFF; return True; } } return False; } /***************************************************************************** * * * Security public interfaces * * * *****************************************************************************/ Status XSecurityQueryExtension ( Display *dpy, int *major_version_return, int *minor_version_return) { XExtDisplayInfo *info = find_display (dpy); xSecurityQueryVersionReply rep; register xSecurityQueryVersionReq *req; if (!XextHasExtension (info)) return (Status)0; /* failure */ LockDisplay (dpy); SecurityGetReq (SecurityQueryVersion, req, info); req->majorVersion = SECURITY_MAJOR_VERSION; req->minorVersion = SECURITY_MINOR_VERSION; if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) { UnlockDisplay (dpy); SyncHandle (); return (Status)0; /* failure */ } *major_version_return = rep.majorVersion; *minor_version_return = rep.minorVersion; UnlockDisplay (dpy); SyncHandle (); if (*major_version_return != SECURITY_MAJOR_VERSION) return (Status)0; /* failure */ else return (Status)1; /* success */ } Xauth * XSecurityAllocXauth(void) { return Xcalloc(1, sizeof(Xauth)); } void XSecurityFreeXauth(Xauth *auth) { XFree(auth); } static int Ones(Mask mask) { register Mask y; y = (mask >> 1) &033333333333; y = mask - y - ((y >>1) & 033333333333); return (((y + (y >> 3)) & 030707070707) % 077); } Xauth * XSecurityGenerateAuthorization( Display *dpy, Xauth *auth_in, unsigned long valuemask, XSecurityAuthorizationAttributes *attributes, XSecurityAuthorization *auth_id_return) { XExtDisplayInfo *info = find_display (dpy); register xSecurityGenerateAuthorizationReq *req; xSecurityGenerateAuthorizationReply rep; Xauth *auth_return; unsigned long values[3]; unsigned long *value = values; unsigned int nvalues; *auth_id_return = 0; /* in case we fail */ /* make sure extension is available */ SecurityCheckExtension (dpy, info, (Xauth *)NULL); LockDisplay(dpy); SecurityGetReq(SecurityGenerateAuthorization, req, info); req->nbytesAuthProto = auth_in->name_length; req->nbytesAuthData = auth_in->data_length; /* adjust length to account for auth name and data */ req->length += (auth_in->name_length + (unsigned)3) >> 2; req->length += (auth_in->data_length + (unsigned)3) >> 2; /* adjust length to account for list of values */ req->valueMask = valuemask & XSecurityAllAuthorizationAttributes; nvalues = Ones(req->valueMask); req->length += nvalues; /* send auth name and data */ Data(dpy, auth_in->name, auth_in->name_length); Data(dpy, auth_in->data, auth_in->data_length); /* send values */ if (valuemask & XSecurityTimeout) *value++ = attributes->timeout; if (valuemask & XSecurityTrustLevel) *value++ = attributes->trust_level; if (valuemask & XSecurityGroup) *value++ = attributes->group; if (valuemask & XSecurityEventMask) *value++ = attributes->event_mask; nvalues <<= 2; Data32(dpy, (long *)values, (long)nvalues); if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) { UnlockDisplay (dpy); SyncHandle (); return (Xauth *)NULL; } *auth_id_return = rep.authId; /* Allocate space for the Xauth struct and the auth name and data all * in one hunk. This lets XSecurityFreeXauth not have to care * about whether the auth was allocated here or in * XSecurityAllocXauth; in both cases, you just free one pointer. */ if ((auth_return = (Xauth *)Xcalloc(1, (sizeof(Xauth) + auth_in->name_length + rep.dataLength)))) { auth_return->data_length = rep.dataLength; auth_return->data = (char *)&auth_return[1]; _XReadPad(dpy, auth_return->data, (long)rep.dataLength); auth_return->name_length = auth_in->name_length; auth_return->name = auth_return->data + auth_return->data_length; memcpy(auth_return->name, auth_in->name, auth_return->name_length); } else { _XEatData(dpy, (unsigned long) (rep.dataLength + 3) & ~3); } UnlockDisplay (dpy); SyncHandle (); return auth_return; } /* XSecurityGenerateAuthorization */ Status XSecurityRevokeAuthorization( Display *dpy, XSecurityAuthorization auth_id) { XExtDisplayInfo *info = find_display (dpy); xSecurityRevokeAuthorizationReq *req; SecurityCheckExtension (dpy, info, 0); LockDisplay(dpy); SecurityGetReq(SecurityRevokeAuthorization, req, info); req->authId = auth_id; UnlockDisplay (dpy); SyncHandle (); return 1; } /* XSecurityRevokeAuthorization */