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static OFString *
fileNameFromContentDisposition(OFString *contentDisposition)
{
void *pool;
const char *UTF8String;
size_t UTF8StringLength;
enum {
StateDispositionType,
StateDispositionTypeSemicolon,
StateDispositionParamNameSkipSpace,
StateDispositionParamName,
StateDispositionParamValue,
StateDispositionParamQuoted,
StateDispositionParamUnquoted,
StateDispositionExpectSemicolon
stateDispositionType,
stateDispositionTypeSemicolon,
stateDispositionParamNameSkipSpace,
stateDispositionParamName,
stateDispositionParamValue,
stateDispositionParamQuoted,
stateDispositionParamUnquoted,
stateDispositionExpectSemicolon
} state;
size_t last;
OFString *type = nil, *paramName = nil, *paramValue;
OFMutableDictionary *params;
OFString *fileName;
if (contentDisposition == nil)
return nil;
pool = objc_autoreleasePoolPush();
UTF8String = contentDisposition.UTF8String;
UTF8StringLength = contentDisposition.UTF8StringLength;
state = StateDispositionType;
state = stateDispositionType;
params = [OFMutableDictionary dictionary];
last = 0;
for (size_t i = 0; i < UTF8StringLength; i++) {
switch (state) {
case StateDispositionType:
case stateDispositionType:
if (UTF8String[i] == ';' || UTF8String[i] == ' ') {
type = [OFString
stringWithUTF8String: UTF8String
length: i];
state = (UTF8String[i] == ';'
? StateDispositionParamNameSkipSpace
: StateDispositionTypeSemicolon);
? stateDispositionParamNameSkipSpace
: stateDispositionTypeSemicolon);
last = i + 1;
}
break;
case StateDispositionTypeSemicolon:
case stateDispositionTypeSemicolon:
if (UTF8String[i] == ';') {
state = StateDispositionParamNameSkipSpace;
state = stateDispositionParamNameSkipSpace;
last = i + 1;
} else if (UTF8String[i] != ' ') {
objc_autoreleasePoolPop(pool);
return nil;
}
break;
case StateDispositionParamNameSkipSpace:
case stateDispositionParamNameSkipSpace:
if (UTF8String[i] != ' ') {
state = StateDispositionParamName;
state = stateDispositionParamName;
last = i;
i--;
}
break;
case StateDispositionParamName:
case stateDispositionParamName:
if (UTF8String[i] == '=') {
paramName = [OFString
stringWithUTF8String: UTF8String + last
length: i - last];
state = StateDispositionParamValue;
state = stateDispositionParamValue;
}
break;
case StateDispositionParamValue:
case stateDispositionParamValue:
if (UTF8String[i] == '"') {
state = StateDispositionParamQuoted;
state = stateDispositionParamQuoted;
last = i + 1;
} else {
state = StateDispositionParamUnquoted;
state = stateDispositionParamUnquoted;
last = i;
i--;
}
break;
case StateDispositionParamQuoted:
case stateDispositionParamQuoted:
if (UTF8String[i] == '"') {
paramValue = [OFString
stringWithUTF8String: UTF8String + last
length: i - last];
[params setObject: paramValue
forKey: paramName.lowercaseString];
state = StateDispositionExpectSemicolon;
state = stateDispositionExpectSemicolon;
}
break;
case StateDispositionParamUnquoted:
case stateDispositionParamUnquoted:
if (UTF8String[i] <= 31 || UTF8String[i] >= 127)
return nil;
switch (UTF8String[i]) {
case ' ': case '"': case '(': case ')': case ',':
case '/': case ':': case '<': case '=': case '>':
case '?': case '@': case '[': case '\\': case ']':
case '{': case '}':
return nil;
case ';':
paramValue = [OFString
stringWithUTF8String: UTF8String + last
length: i - last];
[params setObject: paramValue
forKey: paramName.lowercaseString];
state = StateDispositionParamNameSkipSpace;
state = stateDispositionParamNameSkipSpace;
break;
}
break;
case StateDispositionExpectSemicolon:
case stateDispositionExpectSemicolon:
if (UTF8String[i] == ';') {
state = StateDispositionParamNameSkipSpace;
state = stateDispositionParamNameSkipSpace;
last = i + 1;
} else if (UTF8String[i] != ' ') {
objc_autoreleasePoolPop(pool);
return nil;
}
break;
}
}
if (state == StateDispositionParamUnquoted) {
if (state == stateDispositionParamUnquoted) {
paramValue = [OFString
stringWithUTF8String: UTF8String + last
length: UTF8StringLength - last];
[params setObject: paramValue
forKey: paramName.lowercaseString];
} else if (state != StateDispositionExpectSemicolon) {
} else if (state != stateDispositionExpectSemicolon) {
objc_autoreleasePoolPop(pool);
return nil;
}
if (![type isEqual: @"attachment"] ||
(fileName = [params objectForKey: @"filename"]) == nil) {
objc_autoreleasePoolPop(pool);
|