The Tor Browser / file comparison
comparison: editor/libeditor/html/nsHTMLURIRefObject.cpp
editor/libeditor/html/nsHTMLURIRefObject.cpp
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* Here is the list, from beppe and glazman: | |
| 7 href >> A, AREA, BASE, LINK | |
| 8 src >> FRAME, IFRAME, IMG, INPUT, SCRIPT | |
| 9 <META http-equiv="refresh" content="3,http://www.acme.com/intro.html"> | |
| 10 longdesc >> FRAME, IFRAME, IMG | |
| 11 usemap >> IMG, INPUT, OBJECT | |
| 12 action >> FORM | |
| 13 background >> BODY | |
| 14 codebase >> OBJECT, APPLET | |
| 15 classid >> OBJECT | |
| 16 data >> OBJECT | |
| 17 cite >> BLOCKQUOTE, DEL, INS, Q | |
| 18 profile >> HEAD | |
| 19 ARCHIVE attribute on APPLET ; warning, it contains a list of URIs. | |
| 20 | |
| 21 Easier way of organizing the list: | |
| 22 a: href | |
| 23 area: href | |
| 24 base: href | |
| 25 body: background | |
| 26 blockquote: cite (not normally rewritable) | |
| 27 link: href | |
| 28 frame: src, longdesc | |
| 29 iframe: src, longdesc | |
| 30 input: src, usemap | |
| 31 form: action | |
| 32 img: src, longdesc, usemap | |
| 33 script: src | |
| 34 applet: codebase, archive <list> | |
| 35 object: codebase, data, classid, usemap | |
| 36 head: profile | |
| 37 del: cite | |
| 38 ins: cite | |
| 39 q: cite | |
| 40 */ | |
| 41 | |
| 42 /* Here is how to open a channel for testing | |
| 43 (from embed/qa/testembed/Tests.cpp): | |
| 44 | |
| 45 nsCOMPtr<nsIChannel> theChannel; | |
| 46 nsCString uri; | |
| 47 nsCOMPtr<nsIURI> theURI; | |
| 48 rv = NS_NewURI(getter_AddRefs(theURI), theSpec); | |
| 49 if (!theURI) | |
| 50 error; | |
| 51 rv = NS_OpenURI(getter_AddRefs(theChannel), theURI, nullptr, theLoadGroup); | |
| 52 if (!theChannel) | |
| 53 error; | |
| 54 nsCOMPtr<nsILoadGroup> theLoadGroup(do_CreateInstance(NS_LOADGROUP_CONTRACTID)); | |
| 55 if (!theLoadGroup) | |
| 56 error; | |
| 57 nsCOMPtr<nsIStreamListener> listener(static_cast<nsIStreamListener*>(qaBrowserImpl)); | |
| 58 //nsCOMPtr<nsIWeakReference> thisListener(do_GetWeakReference(listener)); | |
| 59 //qaWebBrowser->AddWebBrowserListener(thisListener, NS_GET_IID(nsIStreamListener)); | |
| 60 | |
| 61 // this calls nsIStreamListener::OnDataAvailable() | |
| 62 rv = theChannel->AsyncOpen(listener, nullptr); | |
| 63 | |
| 64 nsCOMPtr<nsIRequest> theRequest = do_QueryInterface(theChannel); | |
| 65 // Now we can do things on nsIRequest (like what?) | |
| 66 */ | |
| 67 | |
| 68 #include "mozilla/mozalloc.h" | |
| 69 #include "nsAString.h" | |
| 70 #include "nsDebug.h" | |
| 71 #include "nsError.h" | |
| 72 #include "nsHTMLURIRefObject.h" | |
| 73 #include "nsID.h" | |
| 74 #include "nsIDOMAttr.h" | |
| 75 #include "nsIDOMElement.h" | |
| 76 #include "nsIDOMMozNamedAttrMap.h" | |
| 77 #include "nsIDOMNode.h" | |
| 78 #include "nsISupportsUtils.h" | |
| 79 #include "nsString.h" | |
| 80 | |
| 81 // String classes change too often and I can't keep up. | |
| 82 // Set this macro to this week's approved case-insensitive compare routine. | |
| 83 #define MATCHES(tagName, str) tagName.EqualsIgnoreCase(str) | |
| 84 | |
| 85 nsHTMLURIRefObject::nsHTMLURIRefObject() | |
| 86 { | |
| 87 mCurAttrIndex = mAttributeCnt = 0; | |
| 88 } | |
| 89 | |
| 90 nsHTMLURIRefObject::~nsHTMLURIRefObject() | |
| 91 { | |
| 92 } | |
| 93 | |
| 94 //Interfaces for addref and release and queryinterface | |
| 95 NS_IMPL_ISUPPORTS(nsHTMLURIRefObject, nsIURIRefObject) | |
| 96 | |
| 97 NS_IMETHODIMP | |
| 98 nsHTMLURIRefObject::Reset() | |
| 99 { | |
| 100 mCurAttrIndex = 0; | |
| 101 return NS_OK; | |
| 102 } | |
| 103 | |
| 104 NS_IMETHODIMP | |
| 105 nsHTMLURIRefObject::GetNextURI(nsAString & aURI) | |
| 106 { | |
| 107 NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED); | |
| 108 | |
| 109 nsAutoString tagName; | |
| 110 nsresult rv = mNode->GetNodeName(tagName); | |
| 111 NS_ENSURE_SUCCESS(rv, rv); | |
| 112 | |
| 113 // Loop over attribute list: | |
| 114 if (!mAttributes) | |
| 115 { | |
| 116 nsCOMPtr<nsIDOMElement> element (do_QueryInterface(mNode)); | |
| 117 NS_ENSURE_TRUE(element, NS_ERROR_INVALID_ARG); | |
| 118 | |
| 119 mCurAttrIndex = 0; | |
| 120 element->GetAttributes(getter_AddRefs(mAttributes)); | |
| 121 NS_ENSURE_TRUE(mAttributes, NS_ERROR_NOT_INITIALIZED); | |
| 122 | |
| 123 rv = mAttributes->GetLength(&mAttributeCnt); | |
| 124 NS_ENSURE_SUCCESS(rv, rv); | |
| 125 NS_ENSURE_TRUE(mAttributeCnt, NS_ERROR_FAILURE); | |
| 126 mCurAttrIndex = 0; | |
| 127 } | |
| 128 #ifdef DEBUG_akkana | |
| 129 printf("Looking at tag '%s'\n", | |
| 130 NS_LossyConvertUTF16toASCII(tagName).get()); | |
| 131 #endif | |
| 132 while (mCurAttrIndex < mAttributeCnt) | |
| 133 { | |
| 134 nsCOMPtr<nsIDOMAttr> attrNode; | |
| 135 rv = mAttributes->Item(mCurAttrIndex++, getter_AddRefs(attrNode)); | |
| 136 NS_ENSURE_SUCCESS(rv, rv); | |
| 137 NS_ENSURE_ARG_POINTER(attrNode); | |
| 138 nsString curAttr; | |
| 139 rv = attrNode->GetName(curAttr); | |
| 140 NS_ENSURE_SUCCESS(rv, rv); | |
| 141 | |
| 142 // href >> A, AREA, BASE, LINK | |
| 143 #ifdef DEBUG_akkana | |
| 144 printf("Trying to match attribute '%s'\n", | |
| 145 NS_LossyConvertUTF16toASCII(curAttr).get()); | |
| 146 #endif | |
| 147 if (MATCHES(curAttr, "href")) | |
| 148 { | |
| 149 if (!MATCHES(tagName, "a") && !MATCHES(tagName, "area") | |
| 150 && !MATCHES(tagName, "base") && !MATCHES(tagName, "link")) | |
| 151 continue; | |
| 152 rv = attrNode->GetValue(aURI); | |
| 153 NS_ENSURE_SUCCESS(rv, rv); | |
| 154 nsString uri (aURI); | |
| 155 // href pointing to a named anchor doesn't count | |
| 156 if (aURI.First() != char16_t('#')) | |
| 157 return NS_OK; | |
| 158 aURI.Truncate(); | |
| 159 return NS_ERROR_INVALID_ARG; | |
| 160 } | |
| 161 // src >> FRAME, IFRAME, IMG, INPUT, SCRIPT | |
| 162 else if (MATCHES(curAttr, "src")) | |
| 163 { | |
| 164 if (!MATCHES(tagName, "img") | |
| 165 && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe") | |
| 166 && !MATCHES(tagName, "input") && !MATCHES(tagName, "script")) | |
| 167 continue; | |
| 168 return attrNode->GetValue(aURI); | |
| 169 } | |
| 170 //<META http-equiv="refresh" content="3,http://www.acme.com/intro.html"> | |
| 171 else if (MATCHES(curAttr, "content")) | |
| 172 { | |
| 173 if (!MATCHES(tagName, "meta")) | |
| 174 continue; | |
| 175 } | |
| 176 // longdesc >> FRAME, IFRAME, IMG | |
| 177 else if (MATCHES(curAttr, "longdesc")) | |
| 178 { | |
| 179 if (!MATCHES(tagName, "img") | |
| 180 && !MATCHES(tagName, "frame") && !MATCHES(tagName, "iframe")) | |
| 181 continue; | |
| 182 } | |
| 183 // usemap >> IMG, INPUT, OBJECT | |
| 184 else if (MATCHES(curAttr, "usemap")) | |
| 185 { | |
| 186 if (!MATCHES(tagName, "img") | |
| 187 && !MATCHES(tagName, "input") && !MATCHES(tagName, "object")) | |
| 188 continue; | |
| 189 } | |
| 190 // action >> FORM | |
| 191 else if (MATCHES(curAttr, "action")) | |
| 192 { | |
| 193 if (!MATCHES(tagName, "form")) | |
| 194 continue; | |
| 195 } | |
| 196 // background >> BODY | |
| 197 else if (MATCHES(curAttr, "background")) | |
| 198 { | |
| 199 if (!MATCHES(tagName, "body")) | |
| 200 continue; | |
| 201 } | |
| 202 // codebase >> OBJECT, APPLET | |
| 203 else if (MATCHES(curAttr, "codebase")) | |
| 204 { | |
| 205 if (!MATCHES(tagName, "meta")) | |
| 206 continue; | |
| 207 } | |
| 208 // classid >> OBJECT | |
| 209 else if (MATCHES(curAttr, "classid")) | |
| 210 { | |
| 211 if (!MATCHES(tagName, "object")) | |
| 212 continue; | |
| 213 } | |
| 214 // data >> OBJECT | |
| 215 else if (MATCHES(curAttr, "data")) | |
| 216 { | |
| 217 if (!MATCHES(tagName, "object")) | |
| 218 continue; | |
| 219 } | |
| 220 // cite >> BLOCKQUOTE, DEL, INS, Q | |
| 221 else if (MATCHES(curAttr, "cite")) | |
| 222 { | |
| 223 if (!MATCHES(tagName, "blockquote") && !MATCHES(tagName, "q") | |
| 224 && !MATCHES(tagName, "del") && !MATCHES(tagName, "ins")) | |
| 225 continue; | |
| 226 } | |
| 227 // profile >> HEAD | |
| 228 else if (MATCHES(curAttr, "profile")) | |
| 229 { | |
| 230 if (!MATCHES(tagName, "head")) | |
| 231 continue; | |
| 232 } | |
| 233 // archive attribute on APPLET; warning, it contains a list of URIs. | |
| 234 else if (MATCHES(curAttr, "archive")) | |
| 235 { | |
| 236 if (!MATCHES(tagName, "applet")) | |
| 237 continue; | |
| 238 } | |
| 239 } | |
| 240 // Return a code to indicate that there are no more, | |
| 241 // to distinguish that case from real errors. | |
| 242 return NS_ERROR_NOT_AVAILABLE; | |
| 243 } | |
| 244 | |
| 245 NS_IMETHODIMP | |
| 246 nsHTMLURIRefObject::RewriteAllURIs(const nsAString & aOldPat, | |
| 247 const nsAString & aNewPat, | |
| 248 bool aMakeRel) | |
| 249 { | |
| 250 #ifdef DEBUG_akkana | |
| 251 printf("Can't rewrite URIs yet\n"); | |
| 252 #endif | |
| 253 return NS_ERROR_NOT_IMPLEMENTED; | |
| 254 } | |
| 255 | |
| 256 NS_IMETHODIMP | |
| 257 nsHTMLURIRefObject::GetNode(nsIDOMNode** aNode) | |
| 258 { | |
| 259 NS_ENSURE_TRUE(mNode, NS_ERROR_NOT_INITIALIZED); | |
| 260 NS_ENSURE_TRUE(aNode, NS_ERROR_NULL_POINTER); | |
| 261 *aNode = mNode.get(); | |
| 262 NS_ADDREF(*aNode); | |
| 263 return NS_OK; | |
| 264 } | |
| 265 | |
| 266 NS_IMETHODIMP | |
| 267 nsHTMLURIRefObject::SetNode(nsIDOMNode *aNode) | |
| 268 { | |
| 269 mNode = aNode; | |
| 270 nsAutoString dummyURI; | |
| 271 if (NS_SUCCEEDED(GetNextURI(dummyURI))) | |
| 272 { | |
| 273 mCurAttrIndex = 0; // Reset so we'll get the first node next time | |
| 274 return NS_OK; | |
| 275 } | |
| 276 | |
| 277 // If there weren't any URIs in the attributes, | |
| 278 // then don't accept this node. | |
| 279 mNode = 0; | |
| 280 return NS_ERROR_INVALID_ARG; | |
| 281 } | |
| 282 | |
| 283 nsresult NS_NewHTMLURIRefObject(nsIURIRefObject** aResult, nsIDOMNode* aNode) | |
| 284 { | |
| 285 nsHTMLURIRefObject* refObject = new nsHTMLURIRefObject(); | |
| 286 nsresult rv = refObject->SetNode(aNode); | |
| 287 if (NS_FAILED(rv)) { | |
| 288 *aResult = 0; | |
| 289 delete refObject; | |
| 290 return rv; | |
| 291 } | |
| 292 return refObject->QueryInterface(NS_GET_IID(nsIURIRefObject), | |
| 293 (void**)aResult); | |
| 294 } | |
| 295 |
