1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "content/renderer/manifest/manifest_parser.h"
7 #include "base/json/json_reader.h"
8 #include "base/strings/nullable_string16.h"
9 #include "base/strings/string_number_conversions.h"
10 #include "base/strings/string_split.h"
11 #include "base/strings/string_util.h"
12 #include "base/strings/utf_string_conversions.h"
13 #include "base/values.h"
14 #include "content/public/common/manifest.h"
15 #include "content/renderer/manifest/manifest_uma_util.h"
16 #include "ui/gfx/geometry/size.h"
27 base::NullableString16 ParseString(const base::DictionaryValue& dictionary,
28 const std::string& key,
30 if (!dictionary.HasKey(key))
31 return base::NullableString16();
34 if (!dictionary.GetString(key, &value)) {
35 // TODO(mlamouri): provide a custom message to the developer console about
36 // the property being incorrectly set.
37 return base::NullableString16();
41 base::TrimWhitespace(value, base::TRIM_ALL, &value);
42 return base::NullableString16(value, false);
45 // Helper function to parse URLs present on a given |dictionary| in a given
46 // field identified by its |key|. The URL is first parsed as a string then
47 // resolved using |base_url|.
48 // Returns a GURL. If the parsing failed, the GURL will not be valid.
49 GURL ParseURL(const base::DictionaryValue& dictionary,
50 const std::string& key,
51 const GURL& base_url) {
52 base::NullableString16 url_str = ParseString(dictionary, key, NoTrim);
53 if (url_str.is_null())
56 return base_url.Resolve(url_str.string());
59 // Parses the 'name' field of the manifest, as defined in:
60 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-name-member
61 // Returns the parsed string if any, a null string if the parsing failed.
62 base::NullableString16 ParseName(const base::DictionaryValue& dictionary) {
63 return ParseString(dictionary, "name", Trim);
66 // Parses the 'short_name' field of the manifest, as defined in:
67 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-short-name-member
68 // Returns the parsed string if any, a null string if the parsing failed.
69 base::NullableString16 ParseShortName(
70 const base::DictionaryValue& dictionary) {
71 return ParseString(dictionary, "short_name", Trim);
74 // Parses the 'start_url' field of the manifest, as defined in:
75 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-start_url-member
76 // Returns the parsed GURL if any, an empty GURL if the parsing failed.
77 GURL ParseStartURL(const base::DictionaryValue& dictionary,
78 const GURL& manifest_url,
79 const GURL& document_url) {
80 GURL start_url = ParseURL(dictionary, "start_url", manifest_url);
81 if (!start_url.is_valid())
84 if (start_url.GetOrigin() != document_url.GetOrigin()) {
85 // TODO(mlamouri): provide a custom message to the developer console.
92 // Parses the 'display' field of the manifest, as defined in:
93 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-display-member
94 // Returns the parsed DisplayMode if any, DISPLAY_MODE_UNSPECIFIED if the
96 Manifest::DisplayMode ParseDisplay(const base::DictionaryValue& dictionary) {
97 base::NullableString16 display = ParseString(dictionary, "display", Trim);
98 if (display.is_null())
99 return Manifest::DISPLAY_MODE_UNSPECIFIED;
101 if (LowerCaseEqualsASCII(display.string(), "fullscreen"))
102 return Manifest::DISPLAY_MODE_FULLSCREEN;
103 else if (LowerCaseEqualsASCII(display.string(), "standalone"))
104 return Manifest::DISPLAY_MODE_STANDALONE;
105 else if (LowerCaseEqualsASCII(display.string(), "minimal-ui"))
106 return Manifest::DISPLAY_MODE_MINIMAL_UI;
107 else if (LowerCaseEqualsASCII(display.string(), "browser"))
108 return Manifest::DISPLAY_MODE_BROWSER;
110 return Manifest::DISPLAY_MODE_UNSPECIFIED;
113 // Parses the 'orientation' field of the manifest, as defined in:
114 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-orientation-member
115 // Returns the parsed WebScreenOrientationLockType if any,
116 // WebScreenOrientationLockDefault if the parsing failed.
117 blink::WebScreenOrientationLockType ParseOrientation(
118 const base::DictionaryValue& dictionary) {
119 base::NullableString16 orientation =
120 ParseString(dictionary, "orientation", Trim);
122 if (orientation.is_null())
123 return blink::WebScreenOrientationLockDefault;
125 if (LowerCaseEqualsASCII(orientation.string(), "any"))
126 return blink::WebScreenOrientationLockAny;
127 else if (LowerCaseEqualsASCII(orientation.string(), "natural"))
128 return blink::WebScreenOrientationLockNatural;
129 else if (LowerCaseEqualsASCII(orientation.string(), "landscape"))
130 return blink::WebScreenOrientationLockLandscape;
131 else if (LowerCaseEqualsASCII(orientation.string(), "landscape-primary"))
132 return blink::WebScreenOrientationLockLandscapePrimary;
133 else if (LowerCaseEqualsASCII(orientation.string(), "landscape-secondary"))
134 return blink::WebScreenOrientationLockLandscapeSecondary;
135 else if (LowerCaseEqualsASCII(orientation.string(), "portrait"))
136 return blink::WebScreenOrientationLockPortrait;
137 else if (LowerCaseEqualsASCII(orientation.string(), "portrait-primary"))
138 return blink::WebScreenOrientationLockPortraitPrimary;
139 else if (LowerCaseEqualsASCII(orientation.string(), "portrait-secondary"))
140 return blink::WebScreenOrientationLockPortraitSecondary;
142 return blink::WebScreenOrientationLockDefault;
145 // Parses the 'src' field of an icon, as defined in:
146 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-src-member-of-an-icon
147 // Returns the parsed GURL if any, an empty GURL if the parsing failed.
148 GURL ParseIconSrc(const base::DictionaryValue& icon,
149 const GURL& manifest_url) {
150 return ParseURL(icon, "src", manifest_url);
153 // Parses the 'type' field of an icon, as defined in:
154 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-type-member-of-an-icon
155 // Returns the parsed string if any, a null string if the parsing failed.
156 base::NullableString16 ParseIconType(const base::DictionaryValue& icon) {
157 return ParseString(icon, "type", Trim);
160 // Parses the 'density' field of an icon, as defined in:
161 // http://w3c.github.io/manifest/#dfn-steps-for-processing-a-density-member-of-an-icon
162 // Returns the parsed double if any, Manifest::Icon::kDefaultDensity if the
164 double ParseIconDensity(const base::DictionaryValue& icon) {
166 if (!icon.GetDouble("density", &density) || density <= 0)
167 return Manifest::Icon::kDefaultDensity;
171 // Helper function that returns whether the given |str| is a valid width or
172 // height value for an icon sizes per:
173 // https://html.spec.whatwg.org/multipage/semantics.html#attr-link-sizes
174 bool IsValidIconWidthOrHeight(const std::string& str) {
175 if (str.empty() || str[0] == '0')
177 for (size_t i = 0; i < str.size(); ++i)
178 if (!IsAsciiDigit(str[i]))
183 // Parses the 'sizes' attribute of an icon as described in the HTML spec:
184 // https://html.spec.whatwg.org/multipage/semantics.html#attr-link-sizes
185 // Return a vector of gfx::Size that contains the valid sizes found. "Any" is
186 // represented by gfx::Size(0, 0).
187 // TODO(mlamouri): this is implemented as a separate function because it should
188 // be refactored with the other icon sizes parsing implementations, see
189 // http://crbug.com/416477
190 std::vector<gfx::Size> ParseIconSizesHTML(const base::string16& sizes_str16) {
191 if (!base::IsStringASCII(sizes_str16))
192 return std::vector<gfx::Size>();
194 std::vector<gfx::Size> sizes;
195 std::string sizes_str =
196 base::StringToLowerASCII(base::UTF16ToUTF8(sizes_str16));
197 std::vector<std::string> sizes_str_list;
198 base::SplitStringAlongWhitespace(sizes_str, &sizes_str_list);
200 for (size_t i = 0; i < sizes_str_list.size(); ++i) {
201 std::string& size_str = sizes_str_list[i];
202 if (size_str == "any") {
203 sizes.push_back(gfx::Size(0, 0));
207 // It is expected that [0] => width and [1] => height after the split.
208 std::vector<std::string> size_list;
209 base::SplitStringDontTrim(size_str, L'x', &size_list);
210 if (size_list.size() != 2)
212 if (!IsValidIconWidthOrHeight(size_list[0]) ||
213 !IsValidIconWidthOrHeight(size_list[1])) {
218 if (!base::StringToInt(size_list[0], &width) ||
219 !base::StringToInt(size_list[1], &height)) {
223 sizes.push_back(gfx::Size(width, height));
229 // Parses the 'sizes' field of an icon, as defined in:
230 // http://w3c.github.io/manifest/#dfn-steps-for-processing-a-sizes-member-of-an-icon
231 // Returns a vector of gfx::Size with the successfully parsed sizes, if any. An
232 // empty vector if the field was not present or empty. "Any" is represented by
234 std::vector<gfx::Size> ParseIconSizes(const base::DictionaryValue& icon) {
235 base::NullableString16 sizes_str = ParseString(icon, "sizes", NoTrim);
237 return sizes_str.is_null() ? std::vector<gfx::Size>()
238 : ParseIconSizesHTML(sizes_str.string());
241 // Parses the 'icons' field of a Manifest, as defined in:
242 // http://w3c.github.io/manifest/#dfn-steps-for-processing-the-icons-member
243 // Returns a vector of Manifest::Icon with the successfully parsed icons, if
244 // any. An empty vector if the field was not present or empty.
245 std::vector<Manifest::Icon> ParseIcons(const base::DictionaryValue& dictionary,
246 const GURL& manifest_url) {
247 std::vector<Manifest::Icon> icons;
248 if (!dictionary.HasKey("icons"))
251 const base::ListValue* icons_list = 0;
252 if (!dictionary.GetList("icons", &icons_list)) {
253 // TODO(mlamouri): provide a custom message to the developer console about
254 // the property being incorrectly set.
258 for (size_t i = 0; i < icons_list->GetSize(); ++i) {
259 const base::DictionaryValue* icon_dictionary = 0;
260 if (!icons_list->GetDictionary(i, &icon_dictionary))
264 icon.src = ParseIconSrc(*icon_dictionary, manifest_url);
265 // An icon MUST have a valid src. If it does not, it MUST be ignored.
266 if (!icon.src.is_valid())
268 icon.type = ParseIconType(*icon_dictionary);
269 icon.density = ParseIconDensity(*icon_dictionary);
270 icon.sizes = ParseIconSizes(*icon_dictionary);
272 icons.push_back(icon);
278 // Parses the 'gcm_sender_id' field of the manifest.
279 // This is a proprietary extension of the Web Manifest specification.
280 // Returns the parsed string if any, a null string if the parsing failed.
281 base::NullableString16 ParseGCMSenderID(
282 const base::DictionaryValue& dictionary) {
283 return ParseString(dictionary, "gcm_sender_id", Trim);
286 } // anonymous namespace
288 Manifest ManifestParser::Parse(const base::StringPiece& json,
289 const GURL& manifest_url,
290 const GURL& document_url) {
291 scoped_ptr<base::Value> value(base::JSONReader::Read(json));
293 // TODO(mlamouri): get the JSON parsing error and report it to the developer
295 ManifestUmaUtil::ParseFailed();
299 if (value->GetType() != base::Value::TYPE_DICTIONARY) {
300 // TODO(mlamouri): provide a custom message to the developer console.
301 ManifestUmaUtil::ParseFailed();
305 base::DictionaryValue* dictionary = 0;
306 value->GetAsDictionary(&dictionary);
308 // TODO(mlamouri): provide a custom message to the developer console.
309 ManifestUmaUtil::ParseFailed();
315 manifest.name = ParseName(*dictionary);
316 manifest.short_name = ParseShortName(*dictionary);
317 manifest.start_url = ParseStartURL(*dictionary, manifest_url, document_url);
318 manifest.display = ParseDisplay(*dictionary);
319 manifest.orientation = ParseOrientation(*dictionary);
320 manifest.icons = ParseIcons(*dictionary, manifest_url);
321 manifest.gcm_sender_id = ParseGCMSenderID(*dictionary);
323 ManifestUmaUtil::ParseSucceeded(manifest);
328 } // namespace content