Edit
IABSD.fr/xenocara/lib/libICE/src/protosetup.c
matthieu
- lib/libICE/src/protosetup.c
-
/* $Xorg: protosetup.c,v 1.4 2001/02/09 02:03:26 xorgcvs Exp $ */ /****************************************************************************** Copyright 1993, 1998 The Open Group 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. 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. Author: Ralph Mor, X Consortium ******************************************************************************/ /* $XFree86: xc/lib/ICE/protosetup.c,v 1.2 2001/10/28 03:32:28 tsi Exp $ */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <X11/ICE/ICElib.h> #include "ICElibint.h" IceProtocolSetupStatus IceProtocolSetup (iceConn, myOpcode, clientData, mustAuthenticate, majorVersionRet, minorVersionRet, vendorRet, releaseRet, errorLength, errorStringRet) IceConn iceConn; int myOpcode; IcePointer clientData; Bool mustAuthenticate; int *majorVersionRet; int *minorVersionRet; char **vendorRet; char **releaseRet; int errorLength; char *errorStringRet; { iceProtocolSetupMsg *pMsg; char *pData; _IceProtocol *myProtocol; int extra; Bool gotReply, ioErrorOccured; int accepted, i; int hisOpcode; unsigned long setup_sequence; IceReplyWaitInfo replyWait; _IceReply reply; IcePoVersionRec *versionRec = NULL; int authCount; int *authIndices; if (errorStringRet && errorLength > 0) *errorStringRet = '\0'; *majorVersionRet = 0; *minorVersionRet = 0; *vendorRet = NULL; *releaseRet = NULL; if (myOpcode < 1 || myOpcode > _IceLastMajorOpcode) { strncpy (errorStringRet, "myOpcode out of range", errorLength); return (IceProtocolSetupFailure); } myProtocol = &_IceProtocols[myOpcode - 1]; if (myProtocol->orig_client == NULL) { strncpy (errorStringRet, "IceRegisterForProtocolSetup was not called", errorLength); return (IceProtocolSetupFailure); } /* * Make sure this protocol hasn't been activated already. */ if (iceConn->process_msg_info) { for (i = iceConn->his_min_opcode; i <= iceConn->his_max_opcode; i++) { if (iceConn->process_msg_info[ i - iceConn->his_min_opcode].in_use && iceConn->process_msg_info[ i - iceConn->his_min_opcode ].my_opcode == myOpcode) break; } if (i <= iceConn->his_max_opcode) { return (IceProtocolAlreadyActive); } } /* * Generate the message. */ if (myProtocol->orig_client->auth_count > 0) { authIndices = (int *) malloc ( myProtocol->orig_client->auth_count * sizeof (int)); _IceGetPoValidAuthIndices (myProtocol->protocol_name, iceConn->connection_string, myProtocol->orig_client->auth_count, myProtocol->orig_client->auth_names, &authCount, authIndices); } else { authCount = 0; authIndices = NULL; } extra = STRING_BYTES (myProtocol->protocol_name) + STRING_BYTES (myProtocol->orig_client->vendor) + STRING_BYTES (myProtocol->orig_client->release); for (i = 0; i < authCount; i++) { extra += STRING_BYTES (myProtocol->orig_client->auth_names[ authIndices[i]]); } extra += (myProtocol->orig_client->version_count * 4); IceGetHeaderExtra (iceConn, 0, ICE_ProtocolSetup, SIZEOF (iceProtocolSetupMsg), WORD64COUNT (extra), iceProtocolSetupMsg, pMsg, pData); setup_sequence = iceConn->send_sequence; pMsg->protocolOpcode = myOpcode; pMsg->versionCount = myProtocol->orig_client->version_count; pMsg->authCount = authCount; pMsg->mustAuthenticate = mustAuthenticate; STORE_STRING (pData, myProtocol->protocol_name); STORE_STRING (pData, myProtocol->orig_client->vendor); STORE_STRING (pData, myProtocol->orig_client->release); for (i = 0; i < authCount; i++) { STORE_STRING (pData, myProtocol->orig_client->auth_names[ authIndices[i]]); } for (i = 0; i < myProtocol->orig_client->version_count; i++) { STORE_CARD16 (pData, myProtocol->orig_client->version_recs[i].major_version); STORE_CARD16 (pData, myProtocol->orig_client->version_recs[i].minor_version); } IceFlush (iceConn); /* * Process messages until we get a Protocol Reply. */ replyWait.sequence_of_request = setup_sequence; replyWait.major_opcode_of_request = 0; replyWait.minor_opcode_of_request = ICE_ProtocolSetup; replyWait.reply = (IcePointer) &reply; iceConn->protosetup_to_you = (_IceProtoSetupToYouInfo *) malloc ( sizeof (_IceProtoSetupToYouInfo)); iceConn->protosetup_to_you->my_opcode = myOpcode; iceConn->protosetup_to_you->my_auth_count = authCount; iceConn->protosetup_to_you->auth_active = 0; iceConn->protosetup_to_you->my_auth_indices = authIndices; gotReply = False; ioErrorOccured = False; accepted = 0; while (!gotReply && !ioErrorOccured) { ioErrorOccured = (IceProcessMessages ( iceConn, &replyWait, &gotReply) == IceProcessMessagesIOError); if (ioErrorOccured) { strncpy (errorStringRet, "IO error occured doing Protocol Setup on connection", errorLength); return (IceProtocolSetupIOError); } else if (gotReply) { if (reply.type == ICE_PROTOCOL_REPLY) { if (reply.protocol_reply.version_index >= myProtocol->orig_client->version_count) { strncpy (errorStringRet, "Got a bad version index in the Protocol Reply", errorLength); free (reply.protocol_reply.vendor); free (reply.protocol_reply.release); } else { versionRec = &(myProtocol->orig_client->version_recs[ reply.protocol_reply.version_index]); accepted = 1; } } else /* reply.type == ICE_PROTOCOL_ERROR */ { /* Protocol Setup failed */ strncpy (errorStringRet, reply.protocol_error.error_message, errorLength); free (reply.protocol_error.error_message); } if (iceConn->protosetup_to_you->my_auth_indices) free ((char *) iceConn->protosetup_to_you->my_auth_indices); free ((char *) iceConn->protosetup_to_you); iceConn->protosetup_to_you = NULL; } } if (accepted) { _IceProcessMsgInfo *process_msg_info; *majorVersionRet = versionRec->major_version; *minorVersionRet = versionRec->minor_version; *vendorRet = reply.protocol_reply.vendor; *releaseRet = reply.protocol_reply.release; /* * Increase the reference count for the number of active protocols. */ iceConn->proto_ref_count++; /* * We may be using a different major opcode for this protocol * than the other client. Whenever we get a message, we must * map to our own major opcode. */ hisOpcode = reply.protocol_reply.major_opcode; _IceAddOpcodeMapping (iceConn, hisOpcode, myOpcode); process_msg_info = &iceConn->process_msg_info[hisOpcode - iceConn->his_min_opcode]; process_msg_info->client_data = clientData; process_msg_info->accept_flag = 0; process_msg_info->process_msg_proc.orig_client = versionRec->process_msg_proc; return (IceProtocolSetupSuccess); } else { return (IceProtocolSetupFailure); } }