static Bool
doConfigRequireDisallow(
int line,
char* result)
{
Bool permit = (strcmp("require", result) == 0);
if (((result = strtok(NULL, SEPARATOR1)) == NULL) ||
(strcmp(result, "sitepolicy") != 0))
{
BadSyntax("require/disallow must specify \"sitepolicy\"", line);
return 1;
}
if (HaveSitePolicy && (SitePolicyPermit != permit))
{
BadSyntax("can't mix require and disallow policies", line);
return 1;
}
HaveSitePolicy = True;
SitePolicyPermit = permit;
if ((result = strtok(NULL, " \n")) == NULL)
{
BadSyntax("missing policy string after \"sitepolicy\"", line);
return 1;
}
if (SitePolicies)
SitePolicies = (char**)realloc((char**)SitePolicies,
(SitePolicyCount+1) * sizeof(char*));
else
SitePolicies = (char**)malloc(sizeof(char*));
if (!SitePolicies)
{
BadMalloc(line);
return 1;
}
SitePolicies[SitePolicyCount] = strdup(result);
if (!SitePolicies[SitePolicyCount])
{
BadMalloc(line);
return 1;
}
SitePolicyCount++;
#ifdef DEBUG
(void) fprintf(stderr, "%s %s", permit ? "requiring" : "disallowing", result);
#endif
return False;
}
ConfBlock& ConfParser::parse( string configFileName ) throw( BadSyntax ) {
// Open configuration file
ifstream configFile( configFileName.c_str(), ios::out );
if ( !configFile ) throw BadSyntax( configFileName, 0,
"Specified configuration file does not exist" );
#ifdef DEBUG
cout << "Parsing configuration file " << configFileName << endl;
#endif
parse_rec( &outermost_, 0, 0, configFile, configFileName );
return outermost_;
}
int ConfParser::parse_rec( ConfBlock* currBlock,
int level,
int nLine,
ifstream& configFile,
const string& configFileName ) {
// Read in config file linewise
string l;
while ( getline( configFile, l ) ) {
++nLine;
// Remove leading and trailing whitespace
trim( l );
// If the line contained only whitspace we can skip it
if ( l.empty() ) continue;
// Ignore lines beginning with # or // as comments
if ( starts_with( l, "#") || starts_with( l, "//" ) ) continue;
// Check whether it is the end of a block
if ( l.length() == 1 && l[0] == '}' ) {
// Syntax error if we are at level 0
if ( level == 0 ) {
throw BadSyntax( configFileName, nLine,
"Found closing block at outermost level" );
}
return nLine;
}
cmatch m;
regex blockBegin( "^(\\w+)\\s*\\{$" );
regex keyVal( "^(\\w+)\\s+(.*);" );
// Check whether it is the beginning of a new block
if ( regex_match( l.c_str(), m, blockBegin ) ) {
#ifdef DEBUG
cout << "Adding Block " << m[1] << " at level " << level << " (line " << nLine << ")" << endl;
#endif
nLine = parse_rec( &currBlock->addChild( m[1] ), level + 1, nLine, configFile, configFileName );
// Check whether it is a key / value pair
} else if ( regex_match( l.c_str(), m, keyVal ) ) {
currBlock->addParam( m[1], m[2] );
// Else we have a malformed expression and throw an exception
} else {
throw BadSyntax( configFileName, nLine, "Malformed expression" );
}
}
// check if we are at outermost level again at the end
if ( level != 0 )
throw BadSyntax( configFileName, nLine, "Unexpected end of configuration file" );
return nLine;
}
