Edit
IABSD.fr/xenocara/lib/libICE/src/getauth.c
matthieu
- lib/libICE/src/getauth.c
-
/* $Xorg: getauth.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/getauth.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" #include <X11/ICE/ICEutil.h> static Bool auth_valid (); extern int _IcePaAuthDataEntryCount; extern IceAuthDataEntry _IcePaAuthDataEntries[]; /* * The functions in this file are not a standard part of ICElib. * * The sample implementation uses an .ICEauthority to manipulate * authentication data. * * For the client that initiates a Protocol Setup, we look in the * .ICEauthority file to get the data. * * For the client accepting the Protocol Setup, we get the data * from an in-memory database of authentication data (set by the * application calling IceSetPaAuthData). We have to get the data * from memory because getting it directly from the .ICEauthority * file is not secure - someone can just modify the contents of the * .ICEauthority file behind our back. */ void _IceGetPoAuthData (protocolName, networkId, authName, authDataLenRet, authDataRet) char *protocolName; char *networkId; char *authName; unsigned short *authDataLenRet; char **authDataRet; { IceAuthFileEntry *entry; entry = IceGetAuthFileEntry (protocolName, networkId, authName); if (entry) { *authDataLenRet = entry->auth_data_length; if ((*authDataRet = (char *) malloc (entry->auth_data_length)) != NULL) memcpy (*authDataRet, entry->auth_data, entry->auth_data_length); } else { *authDataLenRet = 0; *authDataRet = NULL; } IceFreeAuthFileEntry (entry); } void _IceGetPaAuthData (protocolName, networkId, authName, authDataLenRet, authDataRet) char *protocolName; char *networkId; char *authName; unsigned short *authDataLenRet; char **authDataRet; { IceAuthDataEntry *entry = NULL; int found = 0; int i; for (i = 0; i < _IcePaAuthDataEntryCount && !found; i++) { entry = &_IcePaAuthDataEntries[i]; found = strcmp (protocolName, entry->protocol_name) == 0 && strcmp (networkId, entry->network_id) == 0 && strcmp (authName, entry->auth_name) == 0; } if (found) { *authDataLenRet = entry->auth_data_length; if ((*authDataRet = (char *) malloc (entry->auth_data_length)) != NULL) memcpy (*authDataRet, entry->auth_data, entry->auth_data_length); } else { *authDataLenRet = 0; *authDataRet = NULL; } } void _IceGetPoValidAuthIndices (protocol_name, network_id, num_auth_names, auth_names, num_indices_ret, indices_ret) char *protocol_name; char *network_id; int num_auth_names; char **auth_names; int *num_indices_ret; int *indices_ret; /* in/out arg */ { FILE *auth_file; char *filename; IceAuthFileEntry *entry; int index_ret, i; *num_indices_ret = 0; if (!(filename = IceAuthFileName ())) return; if (access (filename, R_OK) != 0) /* checks REAL id */ return; if (!(auth_file = fopen (filename, "rb"))) return; for (;;) { if (!(entry = IceReadAuthFileEntry (auth_file))) break; if (strcmp (protocol_name, entry->protocol_name) == 0 && strcmp (network_id, entry->network_id) == 0 && auth_valid (entry->auth_name, num_auth_names, auth_names, &index_ret)) { /* * Make sure we didn't store this index already. */ for (i = 0; i < *num_indices_ret; i++) if (index_ret == indices_ret[i]) break; if (i >= *num_indices_ret) { indices_ret[*num_indices_ret] = index_ret; *num_indices_ret += 1; } } IceFreeAuthFileEntry (entry); } fclose (auth_file); } void _IceGetPaValidAuthIndices (protocol_name, network_id, num_auth_names, auth_names, num_indices_ret, indices_ret) char *protocol_name; char *network_id; int num_auth_names; char **auth_names; int *num_indices_ret; int *indices_ret; /* in/out arg */ { int index_ret; int i, j; IceAuthDataEntry *entry; *num_indices_ret = 0; for (i = 0; i < _IcePaAuthDataEntryCount; i++) { entry = &_IcePaAuthDataEntries[i]; if (strcmp (protocol_name, entry->protocol_name) == 0 && strcmp (network_id, entry->network_id) == 0 && auth_valid (entry->auth_name, num_auth_names, auth_names, &index_ret)) { /* * Make sure we didn't store this index already. */ for (j = 0; j < *num_indices_ret; j++) if (index_ret == indices_ret[j]) break; if (j >= *num_indices_ret) { indices_ret[*num_indices_ret] = index_ret; *num_indices_ret += 1; } } } } /* * local routines */ static Bool auth_valid (auth_name, num_auth_names, auth_names, index_ret) char *auth_name; int num_auth_names; char **auth_names; int *index_ret; { /* * Check if auth_name is in auth_names. Return index. */ int i; for (i = 0; i < num_auth_names; i++) if (strcmp (auth_name, auth_names[i]) == 0) { break; } if (i < num_auth_names) { *index_ret = i; return (1); } else return (0); }