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Fox for bug # 109485. Meta refresh works differently than otehr browsers. r=valeski. sr=jaggernaut.

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This commit is contained in:
radha%netscape.com 2002-02-08 22:46:09 +00:00
parent ce1f97ac38
commit 8563362d73
5 changed files with 280 additions and 220 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
content/html/document/src/nsHTMLContentSink.cpp
View File

@ -4656,7 +4656,7 @@ HTMLContentSink::ProcessHeaderData(nsIAtom* aHeader,const nsAReadableString& aVa
nsCOMPtr<nsIRefreshURI> reefer = do_QueryInterface(mWebShell);
if (reefer) {
rv = reefer->RefreshURIFromHeader(baseURI, aValue);
rv = reefer->SetupRefreshURIFromHeader(baseURI, aValue);
if (NS_FAILED(rv)) return rv;
}
} // END refresh

2
content/xml/document/src/nsXMLContentSink.cpp
View File

@ -783,7 +783,7 @@ nsXMLContentSink::ProcessHeaderData(nsIAtom* aHeader,const nsAReadableString& aV
nsCOMPtr<nsIRefreshURI> reefer = do_QueryInterface(mWebShell);
if (reefer) {
rv = reefer->RefreshURIFromHeader(baseURI, aValue);
rv = reefer->SetupRefreshURIFromHeader(baseURI, aValue);
if (NS_FAILED(rv)) return rv;
}
} // END refresh

459
docshell/base/nsDocShell.cpp
View File

@ -3236,13 +3236,14 @@ nsDocShell::ReportScriptError(nsIScriptError * errorObject)
//*****************************************************************************
NS_IMETHODIMP
nsDocShell::RefreshURI(nsIURI * aURI, PRInt32 aDelay, PRBool aRepeat,
PRBool aMetaRefresh)
nsDocShell::RefreshURI(nsIURI * aURI, PRInt32 aDelay, PRBool aRepeat, PRBool aMetaRefresh)
{
NS_ENSURE_ARG(aURI);
nsRefreshTimer *refreshTimer = new nsRefreshTimer();
NS_ENSURE_TRUE(refreshTimer, NS_ERROR_OUT_OF_MEMORY);
PRUint32 busyFlags = 0;
GetBusyFlags(&busyFlags);
nsCOMPtr<nsISupports> dataRef = refreshTimer; // Get the ref count to 1
@ -3257,39 +3258,274 @@ nsDocShell::RefreshURI(nsIURI * aURI, PRInt32 aDelay, PRBool aRepeat,
NS_ERROR_FAILURE);
}
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
NS_ENSURE_TRUE(timer, NS_ERROR_FAILURE);
mRefreshURIList->AppendElement(timer); // owning timer ref
timer->Init(refreshTimer, aDelay);
if (busyFlags & BUSY_FLAGS_BUSY) {
// We are busy loading another page. Don't create the
// timer right now. Instead queue up the request and trigger the
// timer in EndPageLoad().
mRefreshURIList->AppendElement(refreshTimer);
}
else {
// There is no page loading going on right now. Create the
// timer and fire it right away.
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
NS_ENSURE_TRUE(timer, NS_ERROR_FAILURE);
mRefreshURIList->AppendElement(timer); // owning timer ref
timer->Init(refreshTimer, aDelay);
}
return NS_OK;
}
nsresult
nsDocShell::SetupRefreshURIFromHeader(nsIURI * aBaseURI,
const nsAReadableString & aHeader)
{
// Refresh headers are parsed with the following format in mind
// <META HTTP-EQUIV=REFRESH CONTENT="5; URL=http://uri">
// By the time we are here, the following is true:
// header = "REFRESH"
// content = "5; URL=http://uri" // note the URL attribute is
// optional, if it is absent, the currently loaded url is used.
// Also note that the seconds and URL separator can be either
// a ';' or a ','. The ',' separator should be illegal but CNN
// is using it.
//
// We need to handle the following strings, where
// - X is a set of digits
// - URI is either a relative or absolute URI
//
// Note that URI should start with "url=" but we allow omission
//
// "" || ";" || ","
// empty string. use the currently loaded URI
// and refresh immediately.
// "X" || "X;" || "X,"
// Refresh the currently loaded URI in X seconds.
// "X; URI" || "X, URI"
// Refresh using URI as the destination in X seconds.
// "URI" || "; URI" || ", URI"
// Refresh immediately using URI as the destination.
//
// Currently, anything immediately following the URI, if
// seperated by any char in the set "'\"\t\r\n " will be
// ignored. So "10; url=go.html ; foo=bar" will work,
// and so will "10; url='go.html'; foo=bar". However,
// "10; url=go.html; foo=bar" will result in the uri
// "go.html;" since ';' and ',' are valid uri characters.
//
// Note that we need to remove any tokens wrapping the URI.
// These tokens currently include spaces, double and single
// quotes.
// when done, seconds is 0 or the given number of seconds
// uriAttrib is empty or the URI specified
nsAutoString uriAttrib;
PRInt32 seconds = 0;
nsReadingIterator < PRUnichar > iter, tokenStart, doneIterating;
aHeader.BeginReading(iter);
aHeader.EndReading(doneIterating);
// skip leading whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
tokenStart = iter;
// skip leading + and -
if (iter != doneIterating && (*iter == '-' || *iter == '+'))
++iter;
// parse number
while (iter != doneIterating && (*iter >= '0' && *iter <= '9')) {
seconds = seconds * 10 + (*iter - '0');
++iter;
}
if (iter != doneIterating) {
// if we started with a '-', number is negative
if (*tokenStart == '-')
seconds = -seconds;
// skip to next ';' or ','
while (iter != doneIterating && !(*iter == ';' || *iter == ','))
++iter;
// skip ';' or ','
if (iter != doneIterating && (*iter == ';' || *iter == ',')) {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
}
}
// possible start of URI
tokenStart = iter;
// skip "url = " to real start of URI
if (iter != doneIterating && (*iter == 'u' || *iter == 'U')) {
++iter;
if (iter != doneIterating && (*iter == 'r' || *iter == 'R')) {
++iter;
if (iter != doneIterating && (*iter == 'l' || *iter == 'L')) {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
if (iter != doneIterating && *iter == '=') {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
// found real start of URI
tokenStart = iter;
}
}
}
}
// skip a leading '"' or '\''
if (tokenStart != doneIterating && (*tokenStart == '"' || *tokenStart == '\''))
++tokenStart;
// set iter to start of URI
iter = tokenStart;
// tokenStart here points to the beginning of URI
// skip anything which isn't whitespace
while (iter != doneIterating && !nsCRT::IsAsciiSpace(*iter))
++iter;
// move iter one back if the last character is a '"' or '\''
if (iter != tokenStart) {
--iter;
if (!(*iter == '"' || *iter == '\''))
++iter;
}
// URI is whatever's contained from tokenStart to iter.
// note: if tokenStart == doneIterating, so is iter.
nsresult rv = NS_OK;
nsCOMPtr<nsIURI> uri;
if (tokenStart == iter) {
uri = aBaseURI;
}
else {
uriAttrib = Substring(tokenStart, iter);
rv = NS_NewURI(getter_AddRefs(uri), uriAttrib, aBaseURI);
}
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIScriptSecurityManager>
securityManager(do_GetService
(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
rv = securityManager->CheckLoadURI(aBaseURI, uri,
nsIScriptSecurityManager::
DISALLOW_FROM_MAIL);
if (NS_SUCCEEDED(rv)) {
// since we can't travel back in time yet, just pretend it was meant figuratively
if (seconds < 0)
seconds = 0;
rv = RefreshURI(uri, seconds * 1000, PR_FALSE, PR_TRUE);
}
}
}
return rv;
}
NS_IMETHODIMP nsDocShell::SetupRefreshURI(nsIChannel * aChannel)
{
nsresult
rv;
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel, &rv));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIURI> referrer;
rv = httpChannel->GetReferrer(getter_AddRefs(referrer));
if (NS_SUCCEEDED(rv)) {
SetReferrerURI(referrer);
nsXPIDLCString refreshHeader;
rv = httpChannel->GetResponseHeader("refresh",
getter_Copies(refreshHeader));
if (refreshHeader)
rv = SetupRefreshURIFromHeader(mCurrentURI,
NS_ConvertUTF8toUCS2(refreshHeader));
}
}
return rv;
}
NS_IMETHODIMP
nsDocShell::CancelRefreshURITimers()
{
if (!mRefreshURIList)
return NS_OK;
PRUint32 n;
PRUint32 n=0;
mRefreshURIList->Count(&n);
while (n) {
nsCOMPtr<nsISupports> element;
mRefreshURIList->GetElementAt(0, getter_AddRefs(element));
mRefreshURIList->GetElementAt(--n, getter_AddRefs(element));
nsCOMPtr<nsITimer> timer(do_QueryInterface(element));
mRefreshURIList->RemoveElementAt(0); // bye bye owning timer ref
mRefreshURIList->RemoveElementAt(n); // bye bye owning timer ref
if (timer)
timer->Cancel();
n--;
timer->Cancel();
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShell::RefreshURIFromQueue()
{
if (!mRefreshURIList)
return NS_OK;
PRUint32 n = 0;
mRefreshURIList->Count(&n);
while (n) {
nsCOMPtr<nsISupports> element;
mRefreshURIList->GetElementAt(--n, getter_AddRefs(element));
nsCOMPtr<nsRefreshTimer> refreshInfo(do_QueryInterface(element));
if (refreshInfo) {
// This is the nsRefreshTimer object, waiting to be
// setup in a timer object and fired.
// Create the timer and trigger it.
PRUint32 delay = refreshInfo->GetDelay();
nsCOMPtr<nsITimer> timer = do_CreateInstance("@mozilla.org/timer;1");
if (timer) {
// Replace the nsRefreshTimer element in the queue with
// its corresponding timer object, so that in case another
// load comes through before the timer can go off, the timer will
// get cancelled in CancelRefreshURITimer()
mRefreshURIList->ReplaceElementAt(timer, n);
timer->Init(refreshInfo, delay);
}
}
} // while
return NS_OK;
}
//*****************************************************************************
// nsDocShell::nsIContentViewerContainer
//*****************************************************************************
@ -3508,6 +3744,10 @@ nsDocShell::EndPageLoad(nsIWebProgress * aProgress,
mEODForCurrentDocument = PR_TRUE;
}
// if there's a refresh header in the channel, this method
// will set it up for us.
RefreshURIFromQueue();
return NS_OK;
}
@ -4925,203 +5165,10 @@ nsDocShell::OnNewURI(nsIURI * aURI, nsIChannel * aChannel,
// if there's a refresh header in the channel, this method
// will set it up for us.
SetupRefreshURI(aChannel);
return NS_OK;
}
nsresult
nsDocShell::RefreshURIFromHeader(nsIURI * aBaseURI,
const nsAReadableString & aHeader)
{
// Refresh headers are parsed with the following format in mind
// <META HTTP-EQUIV=REFRESH CONTENT="5; URL=http://uri">
// By the time we are here, the following is true:
// header = "REFRESH"
// content = "5; URL=http://uri" // note the URL attribute is
// optional, if it is absent, the currently loaded url is used.
// Also note that the seconds and URL separator can be either
// a ';' or a ','. The ',' separator should be illegal but CNN
// is using it.
//
// We need to handle the following strings, where
// - X is a set of digits
// - URI is either a relative or absolute URI
//
// Note that URI should start with "url=" but we allow omission
//
// "" || ";" || ","
// empty string. use the currently loaded URI
// and refresh immediately.
// "X" || "X;" || "X,"
// Refresh the currently loaded URI in X seconds.
// "X; URI" || "X, URI"
// Refresh using URI as the destination in X seconds.
// "URI" || "; URI" || ", URI"
// Refresh immediately using URI as the destination.
//
// Currently, anything immediately following the URI, if
// seperated by any char in the set "'\"\t\r\n " will be
// ignored. So "10; url=go.html ; foo=bar" will work,
// and so will "10; url='go.html'; foo=bar". However,
// "10; url=go.html; foo=bar" will result in the uri
// "go.html;" since ';' and ',' are valid uri characters.
//
// Note that we need to remove any tokens wrapping the URI.
// These tokens currently include spaces, double and single
// quotes.
// when done, seconds is 0 or the given number of seconds
// uriAttrib is empty or the URI specified
nsAutoString uriAttrib;
PRInt32 seconds = 0;
nsReadingIterator < PRUnichar > iter, tokenStart, doneIterating;
aHeader.BeginReading(iter);
aHeader.EndReading(doneIterating);
// skip leading whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
tokenStart = iter;
// skip leading + and -
if (iter != doneIterating && (*iter == '-' || *iter == '+'))
++iter;
// parse number
while (iter != doneIterating && (*iter >= '0' && *iter <= '9')) {
seconds = seconds * 10 + (*iter - '0');
++iter;
}
if (iter != doneIterating) {
// if we started with a '-', number is negative
if (*tokenStart == '-')
seconds = -seconds;
// skip to next ';' or ','
while (iter != doneIterating && !(*iter == ';' || *iter == ','))
++iter;
// skip ';' or ','
if (iter != doneIterating && (*iter == ';' || *iter == ',')) {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
}
}
// possible start of URI
tokenStart = iter;
// skip "url = " to real start of URI
if (iter != doneIterating && (*iter == 'u' || *iter == 'U')) {
++iter;
if (iter != doneIterating && (*iter == 'r' || *iter == 'R')) {
++iter;
if (iter != doneIterating && (*iter == 'l' || *iter == 'L')) {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
if (iter != doneIterating && *iter == '=') {
++iter;
// skip whitespace
while (iter != doneIterating && nsCRT::IsAsciiSpace(*iter))
++iter;
// found real start of URI
tokenStart = iter;
}
}
}
}
// skip a leading '"' or '\''
if (tokenStart != doneIterating && (*tokenStart == '"' || *tokenStart == '\''))
++tokenStart;
// set iter to start of URI
iter = tokenStart;
// tokenStart here points to the beginning of URI
// skip anything which isn't whitespace
while (iter != doneIterating && !nsCRT::IsAsciiSpace(*iter))
++iter;
// move iter one back if the last character is a '"' or '\''
if (iter != tokenStart) {
--iter;
if (!(*iter == '"' || *iter == '\''))
++iter;
}
// URI is whatever's contained from tokenStart to iter.
// note: if tokenStart == doneIterating, so is iter.
nsresult rv = NS_OK;
nsCOMPtr<nsIURI> uri;
if (tokenStart == iter) {
uri = aBaseURI;
}
else {
uriAttrib = Substring(tokenStart, iter);
rv = NS_NewURI(getter_AddRefs(uri), uriAttrib, aBaseURI);
}
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIScriptSecurityManager>
securityManager(do_GetService
(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv));
if (NS_SUCCEEDED(rv)) {
rv = securityManager->CheckLoadURI(aBaseURI, uri,
nsIScriptSecurityManager::
DISALLOW_FROM_MAIL);
if (NS_SUCCEEDED(rv)) {
// since we can't travel back in time yet, just pretend it was meant figuratively
if (seconds < 0)
seconds = 0;
rv = RefreshURI(uri, seconds * 1000, PR_FALSE, PR_TRUE);
}
}
}
return rv;
}
NS_IMETHODIMP nsDocShell::SetupRefreshURI(nsIChannel * aChannel)
{
nsresult
rv;
nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aChannel, &rv));
if (NS_SUCCEEDED(rv)) {
nsCOMPtr<nsIURI> referrer;
rv = httpChannel->GetReferrer(getter_AddRefs(referrer));
if (NS_SUCCEEDED(rv)) {
SetReferrerURI(referrer);
nsXPIDLCString refreshHeader;
rv = httpChannel->GetResponseHeader("refresh",
getter_Copies(refreshHeader));
if (refreshHeader)
rv = RefreshURIFromHeader(mCurrentURI,
NS_ConvertUTF8toUCS2(refreshHeader));
}
}
return rv;
}
NS_IMETHODIMP
nsDocShell::OnLoadingSite(nsIChannel * aChannel)
{

3
docshell/base/nsDocShell.h
View File

@ -122,6 +122,7 @@ public:
// nsITimerCallback interface
NS_IMETHOD_(void) Notify(nsITimer * timer);
PRInt32 GetDelay() { return mDelay ;}
nsCOMPtr<nsIDocShell> mDocShell;
nsCOMPtr<nsIURI> mURI;
@ -129,6 +130,7 @@ public:
PRInt32 mDelay;
PRBool mMetaRefresh;
protected:
virtual ~nsRefreshTimer();
};
@ -245,6 +247,7 @@ protected:
NS_IMETHOD EnsureScriptEnvironment();
NS_IMETHOD EnsureEditorData();
NS_IMETHOD EnsureFind();
NS_IMETHOD RefreshURIFromQueue();
static inline PRUint32
PRTimeToSeconds(PRTime t_usec)

34
webshell/public/nsIRefreshURI.idl
View File

@ -26,29 +26,39 @@ interface nsIChannel;
[scriptable, uuid(69EFC430-2EFE-11d2-9E5D-006008BF092E)]
interface nsIRefreshURI : nsISupports {
/**
* Reloads a uri after waiting millis milliseconds.
* Load a uri after waiting for aMillis milliseconds. If the docshell
* is busy loading a page currently, the refresh request will be
* queued and executed when the current load finishes.
*
* @param uri The uri to refresh.
* @param millis The number of milliseconds to wait.
* @param repeat Do you want the uri to be repeatedly refreshed every millis milliseconds.
* @param flag to check if this is for a META refresh
* @param aUri The uri to refresh.
* @param aMillis The number of milliseconds to wait.
* @param aRepeat Flag to indicate if the uri is to be
* repeatedly refreshed every aMillis milliseconds.
* @parem aMetaRefresh Flag to indicate if this is a Meta refresh.
*/
void refreshURI(in nsIURI aURI, in long aMillis, in boolean aRepeat, in boolean aMetaRefresh);
/**
* Checks the passed in channel to see if there is a refresh header, if there is,
* will setup a refreahURI by calling refreshURI
* Checks the passed in channel to see if there is a refresh header,
* if there is, will setup a timer to refresh the uri found
* in the header. If docshell is busy loading a page currently, the
* request will be queued and executed when the current page
* finishes loading.
*
* @param aChannel The channel to be parsed.
*/
void setupRefreshURI(in nsIChannel aChannel);
/**
* Parses the passed in header string and will call refreshURI with
* the parsed values
* Parses the passed in header string and sets up a refreshURI if
* a "refresh" header is found. If docshell is busy loading a page
* currently, the request will be queued and executed when
* the current page finishes loading.
*
* @param aBaseURI base URI to resolve refresh uri against
* @param aHeader The meta refresh header string
* @param aBaseURI base URI to resolve refresh uri with.
* @param aHeader The meta refresh header string.
*/
void refreshURIFromHeader(in nsIURI aBaseURI, in AString aHeader);
void setupRefreshURIFromHeader(in nsIURI aBaseURI, in AString aHeader);
/**
* Cancels all timer loads.