406 lines
9.4 KiB
Plaintext
406 lines
9.4 KiB
Plaintext
/*
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* Reads lexical config files and updates database.
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*
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* MUSCLE SmartCard Development ( https://pcsclite.apdu.fr/ )
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*
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* Copyright (C) 1999-2002
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* David Corcoran <corcoran@musclecard.com>
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* Copyright (C) 2004
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* Damien Sauveron <damien.sauveron@labri.fr>
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* Copyright (C) 2004-2010
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* Ludovic Rousseau <ludovic.rousseau@free.fr>
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*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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%{
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#include <dirent.h>
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#include <sys/stat.h>
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#include "wintypes.h"
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#include "pcscd.h"
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#include "readerfactory.h"
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#include "configfile.h"
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int evaluatetoken(char *pcToken);
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static int iLinenumber;
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static int iOldLinenumber;
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static char *pcPrevious;
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static char *pcCurrent;
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static char *pcFriendlyname;
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static char *pcDevicename;
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static char *pcLibpath;
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static char *pcChannelid;
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static int badError;
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static SerialReader *reader_list;
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static int reader_list_size;
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const char *ConfFile;
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void tok_error(const char *pcToken_error);
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%}
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%option nounput
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%option noinput
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%option noyywrap
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%%
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#.* {}
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"\n" { iLinenumber++; }
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(\"[^"\n]*["\n])|(\'[^'\n]*['\n]) { (void)evaluatetoken(yytext); }
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[ \t] {}
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([A-Z]|[a-z]|[0-9]|[=\\\/\-\.\_\@:])+ { (void)evaluatetoken(yytext); }
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. { iOldLinenumber = iLinenumber; tok_error(yytext); }
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%%
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include "config.h"
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#include "misc.h"
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#include "pcsclite.h"
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#include "pcscd.h"
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#include "debuglog.h"
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#include "sys_generic.h"
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#include "readerfactory.h"
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int evaluatetoken(char *pcToken)
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{
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if (pcPrevious == NULL)
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{ /* This is the key */
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pcPrevious = strdup(pcToken);
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iOldLinenumber = iLinenumber;
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}
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else
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{
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/* first and second tokens are not on the same line */
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if (iOldLinenumber != iLinenumber)
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{
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tok_error(pcPrevious);
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pcPrevious = strdup(pcToken);
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iOldLinenumber = iLinenumber;
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return 1;
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}
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pcCurrent = pcToken;
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if (strcmp(pcPrevious, "FRIENDLYNAME") == 0)
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{
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if (pcFriendlyname == NULL)
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{
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size_t n, p;
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pcFriendlyname = malloc(strlen(pcCurrent) + 1);
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for (n = 0, p = 0; n < strlen(pcCurrent); n++)
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{
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if (pcCurrent[n] != '"')
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{ /* Strip off the quotes */
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pcFriendlyname[p++] = pcCurrent[n];
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}
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}
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pcFriendlyname[p++] = '\0';
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}
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else
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{
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tok_error(pcPrevious);
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return 1;
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}
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}
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else if (strcmp(pcPrevious, "DEVICENAME") == 0)
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{
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if (pcDevicename == NULL)
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{
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struct stat fStatBuf;
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pcDevicename = strdup(pcCurrent);
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if ((NULL == strchr(pcDevicename, ':'))
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&& (stat(pcDevicename, &fStatBuf) != 0))
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{
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Log3(PCSC_LOG_CRITICAL, "Error with device %s: %s",
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pcDevicename, strerror(errno));
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Log1(PCSC_LOG_CRITICAL, "You should remove the DEVICENAME line if your driver does not use this field");
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badError = 1;
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}
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}
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else
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{
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tok_error(pcPrevious);
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return 1;
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}
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}
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else if (strcmp(pcPrevious, "LIBPATH") == 0)
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{
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if (pcLibpath == NULL)
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{
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struct stat fStatBuf;
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pcLibpath = strdup(pcCurrent);
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if (stat(pcLibpath, &fStatBuf) != 0)
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{
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Log3(PCSC_LOG_CRITICAL, "Error with library %s: %s",
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pcLibpath, strerror(errno));
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badError = 1;
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}
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if (strstr(pcLibpath, ".bundle") != NULL)
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{
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Log1(PCSC_LOG_ERROR, "WARNING *************************************");
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Log2(PCSC_LOG_ERROR, "WARNING: USB drivers SHOULD NOT be declared in a reader.conf file: %s", pcLibpath);
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Log1(PCSC_LOG_ERROR, "WARNING *************************************");
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}
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}
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else
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{
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tok_error(pcPrevious);
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return 1;
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}
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}
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else if (strcmp(pcPrevious, "CHANNELID") == 0)
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{
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if (pcChannelid == NULL)
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pcChannelid = strdup(pcCurrent);
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else
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{
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tok_error(pcPrevious);
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return 1;
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}
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}
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else
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{
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tok_error(pcPrevious);
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free(pcPrevious);
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pcPrevious = NULL;
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return 1;
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}
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free(pcPrevious);
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pcPrevious = NULL;
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}
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/* CHANNELID and DEVICENAME are both optional but not at the same time */
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if (pcFriendlyname && pcLibpath && badError != 1
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&& (pcChannelid || pcDevicename))
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{
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int channelId;
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static char* defaultDeviceName = (char *)"";
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Log2(PCSC_LOG_DEBUG, "Add reader: %s", pcFriendlyname);
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if (0 == reader_list_size)
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{
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/* one real reader and one end marker */
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reader_list_size = 2;
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reader_list = malloc(reader_list_size * sizeof(SerialReader));
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}
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else
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{
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SerialReader *new_reader_list = NULL;
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reader_list_size++;
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new_reader_list = realloc(reader_list, reader_list_size *
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sizeof(SerialReader));
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if (new_reader_list == NULL)
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free(reader_list);
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reader_list = new_reader_list;
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}
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if (reader_list == NULL)
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{
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tok_error("No Memory");
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return 1;
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}
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/* end marker */
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reader_list[reader_list_size-1].pcFriendlyname = NULL;
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/* the DEVICENAME parameter is optional */
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if (NULL == pcDevicename)
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pcDevicename = defaultDeviceName;
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if (pcChannelid)
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channelId = strtoul(pcChannelid, NULL, 0);
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else
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channelId = 0;
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reader_list[reader_list_size-2].pcFriendlyname = strdup(pcFriendlyname);
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reader_list[reader_list_size-2].pcDevicename = strdup(pcDevicename);
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reader_list[reader_list_size-2].pcLibpath = strdup(pcLibpath),
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reader_list[reader_list_size-2].channelId = channelId;
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free(pcFriendlyname);
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pcFriendlyname = NULL;
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if (pcDevicename != defaultDeviceName)
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free(pcDevicename);
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pcDevicename = NULL;
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free(pcLibpath);
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pcLibpath = NULL;
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if (pcChannelid)
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free(pcChannelid);
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pcChannelid = NULL;
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}
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return 0;
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}
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void tok_error(const char *token_error)
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{
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#ifdef NO_LOG
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(void)token_error;
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#endif
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Log4(PCSC_LOG_ERROR, "tok_error: invalid value line %d in %s: %s",
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iOldLinenumber, ConfFile, token_error);
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badError = 1;
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}
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int DBGetReaderListDir(const char *readerconf_dir,
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SerialReader **caller_reader_list)
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{
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DIR *dir;
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int ret = 0;
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/* (re)start with an empty list */
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reader_list = NULL;
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reader_list_size = 0;
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dir = opendir(readerconf_dir);
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if (dir)
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{
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/* the configuration file is a directory */
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struct dirent *direntry;
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Log2(PCSC_LOG_DEBUG, "Parsing conf directory: %s", readerconf_dir);
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/* for each configuration file */
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while ((direntry = readdir(dir)) != NULL)
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{
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char filename[FILENAME_MAX];
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int r;
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snprintf(filename, sizeof(filename), "%s/%s",
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readerconf_dir, direntry->d_name);
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/* skip non regular files */
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#ifdef HAVE_STRUCT_DIRENT_D_TYPE
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if (direntry->d_type == DT_UNKNOWN)
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#endif
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{
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struct stat st;
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if (lstat(filename, &st) != 0)
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{
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Log2(PCSC_LOG_DEBUG, "Skipping non statable file: %s",
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direntry->d_name);
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continue;
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}
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if (!S_ISREG(st.st_mode))
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{
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Log2(PCSC_LOG_DEBUG, "Skipping non regular file: %s",
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direntry->d_name);
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continue;
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}
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}
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#ifdef HAVE_STRUCT_DIRENT_D_TYPE
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else
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if (direntry->d_type != DT_REG)
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{
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Log2(PCSC_LOG_DEBUG, "Skipping non regular file: %s",
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direntry->d_name);
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continue;
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}
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#endif
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/* skip files starting with . like ., .., .svn, etc */
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if ('.' == direntry->d_name[0])
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{
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Log2(PCSC_LOG_DEBUG, "Skipping hidden file: %s",
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direntry->d_name);
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continue;
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}
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/* each call to DBGetReaderList() will append to the list */
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r = DBGetReaderList(filename, caller_reader_list);
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/* set the global return value to the latest error */
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if (r)
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ret = r;
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}
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closedir(dir);
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}
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else
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/* the configuration file is really a file */
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ret = DBGetReaderList(readerconf_dir, caller_reader_list);
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return ret;
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}
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int DBGetReaderList(const char *readerconf, SerialReader **caller_reader_list)
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{
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FILE *configFile = NULL;
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*caller_reader_list = NULL; /* no list by default */
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/* used by tok_error() */
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ConfFile = readerconf;
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Log2(PCSC_LOG_DEBUG, "Parsing conf file: %s", ConfFile);
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configFile = fopen(readerconf, "r");
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if (configFile == NULL)
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return 1;
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yyin = configFile;
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/* (re)start with a clean state */
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iLinenumber = 1;
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iOldLinenumber = -1;
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pcFriendlyname = NULL;
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pcDevicename = NULL;
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pcLibpath = NULL;
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pcChannelid = NULL;
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pcPrevious = NULL;
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pcCurrent = NULL;
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badError = 0;
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do
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{
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(void)yylex();
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}
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while (!feof(configFile));
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yylex_destroy();
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(void)fclose(configFile);
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*caller_reader_list = reader_list;
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if (badError == 1)
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return -1;
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else
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return 0;
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} /* End of configfile.c */
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