The Tor Browser: comparison image/decoders/icon/nsIconURI.cpp

--1:000000000000
+:a401c980d7ee
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+*
+* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#include "mozilla/ArrayUtils.h"
+#include "nsIconURI.h"
+#include "nsNetUtil.h"
+#include "nsIIOService.h"
+#include "nsIURL.h"
+#include "prprf.h"
+#include "plstr.h"
+#include <stdlib.h>
+using namespace mozilla;
+#define DEFAULT_IMAGE_SIZE 16
+#if defined(MAX_PATH)
+#define SANE_FILE_NAME_LEN MAX_PATH
+#elif defined(PATH_MAX)
+#define SANE_FILE_NAME_LEN PATH_MAX
+#else
+#define SANE_FILE_NAME_LEN 1024
+#endif
+// helper function for parsing out attributes like size, and contentType
+// from the icon url.
+static void extractAttributeValue(const char * searchString, const char * attributeName, nsCString& aResult);
+static const char *kSizeStrings[] =
+{
+"button",
+"toolbar",
+"toolbarsmall",
+"menu",
+"dnd",
+"dialog"
+};
+static const char *kStateStrings[] =
+{
+"normal",
+"disabled"
+};
+////////////////////////////////////////////////////////////////////////////////
+nsMozIconURI::nsMozIconURI()
+: mSize(DEFAULT_IMAGE_SIZE),
+mIconSize(-1),
+mIconState(-1)
+{
+}
+nsMozIconURI::~nsMozIconURI()
+{
+}
+NS_IMPL_ISUPPORTS(nsMozIconURI, nsIMozIconURI, nsIURI)
+#define MOZICON_SCHEME "moz-icon:"
+#define MOZICON_SCHEME_LEN (sizeof(MOZICON_SCHEME) - 1)
+////////////////////////////////////////////////////////////////////////////////
+// nsIURI methods:
+NS_IMETHODIMP
+nsMozIconURI::GetSpec(nsACString &aSpec)
+{
+aSpec = MOZICON_SCHEME;
+if (mIconURL)
+{
+nsAutoCString fileIconSpec;
+nsresult rv = mIconURL->GetSpec(fileIconSpec);
+NS_ENSURE_SUCCESS(rv, rv);
+aSpec += fileIconSpec;
+}
+else if (!mStockIcon.IsEmpty())
+{
+aSpec += "//stock/";
+aSpec += mStockIcon;
+}
+else
+{
+aSpec += "//";
+aSpec += mFileName;
+}
+aSpec += "?size=";
+if (mIconSize >= 0)
+{
+aSpec += kSizeStrings[mIconSize];
+}
+else
+{
+char buf[20];
+PR_snprintf(buf, sizeof(buf), "%d", mSize);
+aSpec.Append(buf);
+}
+if (mIconState >= 0) {
+aSpec += "&state=";
+aSpec += kStateStrings[mIconState];
+}
+if (!mContentType.IsEmpty())
+{
+aSpec += "&contentType=";
+aSpec += mContentType.get();
+}
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetSpecIgnoringRef(nsACString &result)
+{
+return GetSpec(result);
+}
+NS_IMETHODIMP
+nsMozIconURI::GetHasRef(bool *result)
+{
+*result = false;
+return NS_OK;
+}
+// takes a string like ?size=32&contentType=text/html and returns a new string
+// containing just the attribute value. i.e you could pass in this string with
+// an attribute name of 'size=', this will return 32
+// Assumption: attribute pairs in the string are separated by '&'.
+void extractAttributeValue(const char * searchString, const char * attributeName, nsCString& result)
+{
+//NS_ENSURE_ARG_POINTER(extractAttributeValue);
+result.Truncate();
+if (searchString && attributeName)
+{
+// search the string for attributeName
+uint32_t attributeNameSize = strlen(attributeName);
+const char * startOfAttribute = PL_strcasestr(searchString, attributeName);
+if (startOfAttribute &&
+( *(startOfAttribute-1) == '?' || *(startOfAttribute-1) == '&') )
+{
+startOfAttribute += attributeNameSize; // skip over the attributeName
+if (*startOfAttribute) // is there something after the attribute name
+{
+const char * endofAttribute = strchr(startOfAttribute, '&');
+if (endofAttribute)
+result.Assign(Substring(startOfAttribute, endofAttribute));
+else
+result.Assign(startOfAttribute);
+} // if we have a attribute value
+} // if we have a attribute name
+} // if we got non-null search string and attribute name values
+}
+NS_IMETHODIMP
+nsMozIconURI::SetSpec(const nsACString &aSpec)
+{
+// Reset everything to default values.
+mIconURL = nullptr;
+mSize = DEFAULT_IMAGE_SIZE;
+mContentType.Truncate();
+mFileName.Truncate();
+mStockIcon.Truncate();
+mIconSize = -1;
+mIconState = -1;
+nsAutoCString iconSpec(aSpec);
+if (!Substring(iconSpec, 0, MOZICON_SCHEME_LEN).EqualsLiteral(MOZICON_SCHEME))
+return NS_ERROR_MALFORMED_URI;
+int32_t questionMarkPos = iconSpec.Find("?");
+if (questionMarkPos != -1 && static_cast<int32_t>(iconSpec.Length()) > (questionMarkPos + 1))
+{
+extractAttributeValue(iconSpec.get(), "contentType=", mContentType);
+nsAutoCString sizeString;
+extractAttributeValue(iconSpec.get(), "size=", sizeString);
+if (!sizeString.IsEmpty())
+{
+const char *sizeStr = sizeString.get();
+for (uint32_t i = 0; i < ArrayLength(kSizeStrings); i++)
+{
+if (PL_strcasecmp(sizeStr, kSizeStrings[i]) == 0)
+{
+mIconSize = i;
+break;
+}
+}
+int32_t sizeValue = atoi(sizeString.get());
+if (sizeValue)
+mSize = sizeValue;
+}
+nsAutoCString stateString;
+extractAttributeValue(iconSpec.get(), "state=", stateString);
+if (!stateString.IsEmpty())
+{
+const char *stateStr = stateString.get();
+for (uint32_t i = 0; i < ArrayLength(kStateStrings); i++)
+{
+if (PL_strcasecmp(stateStr, kStateStrings[i]) == 0)
+{
+mIconState = i;
+break;
+}
+}
+}
+}
+int32_t pathLength = iconSpec.Length() - MOZICON_SCHEME_LEN;
+if (questionMarkPos != -1)
+pathLength = questionMarkPos - MOZICON_SCHEME_LEN;
+if (pathLength < 3)
+return NS_ERROR_MALFORMED_URI;
+nsAutoCString iconPath(Substring(iconSpec, MOZICON_SCHEME_LEN, pathLength));
+// Icon URI path can have three forms:
+// (1) //stock/<icon-identifier>
+// (2) //<some dummy file with an extension>
+// (3) a valid URL
+if (!strncmp("//stock/", iconPath.get(), 8))
+{
+mStockIcon.Assign(Substring(iconPath, 8));
+// An icon identifier must always be specified.
+if (mStockIcon.IsEmpty())
+return NS_ERROR_MALFORMED_URI;
+return NS_OK;
+}
+if (StringBeginsWith(iconPath, NS_LITERAL_CSTRING("//")))
+{
+// Sanity check this supposed dummy file name.
+if (iconPath.Length() > SANE_FILE_NAME_LEN)
+return NS_ERROR_MALFORMED_URI;
+iconPath.Cut(0, 2);
+mFileName.Assign(iconPath);
+}
+nsresult rv;
+nsCOMPtr<nsIIOService> ioService(do_GetService(NS_IOSERVICE_CONTRACTID, &rv));
+NS_ENSURE_SUCCESS(rv, rv);
+nsCOMPtr<nsIURI> uri;
+ioService->NewURI(iconPath, nullptr, nullptr, getter_AddRefs(uri));
+mIconURL = do_QueryInterface(uri);
+if (mIconURL)
+mFileName.Truncate();
+else if (mFileName.IsEmpty())
+return NS_ERROR_MALFORMED_URI;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetPrePath(nsACString &prePath)
+{
+prePath = MOZICON_SCHEME;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetScheme(nsACString &aScheme)
+{
+aScheme = "moz-icon";
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetScheme(const nsACString &aScheme)
+{
+// doesn't make sense to set the scheme of a moz-icon URL
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetUsername(nsACString &aUsername)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetUsername(const nsACString &aUsername)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetPassword(nsACString &aPassword)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetPassword(const nsACString &aPassword)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetUserPass(nsACString &aUserPass)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetUserPass(const nsACString &aUserPass)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetHostPort(nsACString &aHostPort)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetHostPort(const nsACString &aHostPort)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetHost(nsACString &aHost)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetHost(const nsACString &aHost)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetPort(int32_t *aPort)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetPort(int32_t aPort)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetPath(nsACString &aPath)
+{
+aPath.Truncate();
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetPath(const nsACString &aPath)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetRef(nsACString &aRef)
+{
+aRef.Truncate();
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetRef(const nsACString &aRef)
+{
+return NS_ERROR_FAILURE;
+}
+NS_IMETHODIMP
+nsMozIconURI::Equals(nsIURI *other, bool *result)
+{
+NS_ENSURE_ARG_POINTER(other);
+NS_PRECONDITION(result, "null pointer");
+nsAutoCString spec1;
+nsAutoCString spec2;
+other->GetSpec(spec2);
+GetSpec(spec1);
+if (!PL_strcasecmp(spec1.get(), spec2.get()))
+*result = true;
+else
+*result = false;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::EqualsExceptRef(nsIURI *other, bool *result)
+{
+// GetRef/SetRef not supported by nsMozIconURI, so
+// EqualsExceptRef() is the same as Equals().
+return Equals(other, result);
+}
+NS_IMETHODIMP
+nsMozIconURI::SchemeIs(const char *i_Scheme, bool *o_Equals)
+{
+NS_ENSURE_ARG_POINTER(o_Equals);
+if (!i_Scheme) return NS_ERROR_INVALID_ARG;
+*o_Equals = PL_strcasecmp("moz-icon", i_Scheme) ? false : true;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::Clone(nsIURI **result)
+{
+nsCOMPtr<nsIURL> newIconURL;
+if (mIconURL)
+{
+nsCOMPtr<nsIURI> newURI;
+nsresult rv = mIconURL->Clone(getter_AddRefs(newURI));
+if (NS_FAILED(rv))
+return rv;
+newIconURL = do_QueryInterface(newURI, &rv);
+if (NS_FAILED(rv))
+return rv;
+}
+nsMozIconURI *uri = new nsMozIconURI();
+newIconURL.swap(uri->mIconURL);
+uri->mSize = mSize;
+uri->mContentType = mContentType;
+uri->mFileName = mFileName;
+uri->mStockIcon = mStockIcon;
+uri->mIconSize = mIconSize;
+uri->mIconState = mIconState;
+NS_ADDREF(*result = uri);
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::CloneIgnoringRef(nsIURI **result)
+{
+// GetRef/SetRef not supported by nsMozIconURI, so
+// CloneIgnoringRef() is the same as Clone().
+return Clone(result);
+}
+NS_IMETHODIMP
+nsMozIconURI::Resolve(const nsACString &relativePath, nsACString &result)
+{
+return NS_ERROR_NOT_IMPLEMENTED;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetAsciiSpec(nsACString &aSpecA)
+{
+return GetSpec(aSpecA);
+}
+NS_IMETHODIMP
+nsMozIconURI::GetAsciiHost(nsACString &aHostA)
+{
+return GetHost(aHostA);
+}
+NS_IMETHODIMP
+nsMozIconURI::GetOriginCharset(nsACString &result)
+{
+result.Truncate();
+return NS_OK;
+}
+////////////////////////////////////////////////////////////////////////////////
+// nsIIconUri methods:
+NS_IMETHODIMP
+nsMozIconURI::GetIconURL(nsIURL* * aFileUrl)
+{
+*aFileUrl = mIconURL;
+NS_IF_ADDREF(*aFileUrl);
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetIconURL(nsIURL* aFileUrl)
+{
+// this isn't called anywhere, needs to go through SetSpec parsing
+return NS_ERROR_NOT_IMPLEMENTED;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetImageSize(uint32_t * aImageSize)  // measured by # of pixels in a row. defaults to 16.
+{
+*aImageSize = mSize;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetImageSize(uint32_t aImageSize)  // measured by # of pixels in a row. defaults to 16.
+{
+mSize = aImageSize;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetContentType(nsACString &aContentType)
+{
+aContentType = mContentType;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::SetContentType(const nsACString &aContentType)
+{
+mContentType = aContentType;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetFileExtension(nsACString &aFileExtension)
+{
+// First, try to get the extension from mIconURL if we have one
+if (mIconURL)
+{
+nsAutoCString fileExt;
+if (NS_SUCCEEDED(mIconURL->GetFileExtension(fileExt)))
+{
+if (!fileExt.IsEmpty())
+{
+// unfortunately, this code doesn't give us the required '.' in front of the extension
+// so we have to do it ourselves..
+aFileExtension.Assign('.');
+aFileExtension.Append(fileExt);
+}
+}
+return NS_OK;
+}
+if (!mFileName.IsEmpty())
+{
+// truncate the extension out of the file path...
+const char * chFileName = mFileName.get(); // get the underlying buffer
+const char * fileExt = strrchr(chFileName, '.');
+if (!fileExt)
+return NS_OK;
+aFileExtension = fileExt;
+}
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetStockIcon(nsACString &aStockIcon)
+{
+aStockIcon = mStockIcon;
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetIconSize(nsACString &aSize)
+{
+if (mIconSize >= 0)
+aSize = kSizeStrings[mIconSize];
+else
+aSize.Truncate();
+return NS_OK;
+}
+NS_IMETHODIMP
+nsMozIconURI::GetIconState(nsACString &aState)
+{
+if (mIconState >= 0)
+aState = kStateStrings[mIconState];
+else
+aState.Truncate();
+return NS_OK;
+}
+////////////////////////////////////////////////////////////////////////////////

The Tor Browser / file comparison

comparison: image/decoders/icon/nsIconURI.cpp

image/decoders/icon/nsIconURI.cpp