1 // Copyright 2016 PDFium 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.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fpdfdoc/cpdf_action.h"
8
9 #include "core/fpdfapi/parser/cpdf_array.h"
10 #include "core/fpdfapi/parser/cpdf_document.h"
11 #include "core/fpdfdoc/cpdf_filespec.h"
12 #include "core/fpdfdoc/cpdf_nametree.h"
13
14 namespace {
15
16 const char* const g_sATypes[] = {
17 "Unknown", "GoTo", "GoToR", "GoToE", "Launch",
18 "Thread", "URI", "Sound", "Movie", "Hide",
19 "Named", "SubmitForm", "ResetForm", "ImportData", "JavaScript",
20 "SetOCGState", "Rendition", "Trans", "GoTo3DView", nullptr};
21
22 } // namespace
23
CPDF_Action(CPDF_Dictionary * pDict)24 CPDF_Action::CPDF_Action(CPDF_Dictionary* pDict) : m_pDict(pDict) {}
25
26 CPDF_Action::CPDF_Action(const CPDF_Action& that) = default;
27
~CPDF_Action()28 CPDF_Action::~CPDF_Action() {}
29
GetDest(CPDF_Document * pDoc) const30 CPDF_Dest CPDF_Action::GetDest(CPDF_Document* pDoc) const {
31 if (!m_pDict)
32 return CPDF_Dest();
33
34 ByteString type = m_pDict->GetStringFor("S");
35 if (type != "GoTo" && type != "GoToR")
36 return CPDF_Dest();
37
38 CPDF_Object* pDest = m_pDict->GetDirectObjectFor("D");
39 if (!pDest)
40 return CPDF_Dest();
41 if (pDest->IsString() || pDest->IsName()) {
42 CPDF_NameTree name_tree(pDoc, "Dests");
43 return CPDF_Dest(name_tree.LookupNamedDest(pDoc, pDest->GetUnicodeText()));
44 }
45 if (CPDF_Array* pArray = pDest->AsArray())
46 return CPDF_Dest(pArray);
47
48 return CPDF_Dest();
49 }
50
GetType() const51 CPDF_Action::ActionType CPDF_Action::GetType() const {
52 if (!m_pDict)
53 return Unknown;
54
55 ByteString csType = m_pDict->GetStringFor("S");
56 if (csType.IsEmpty())
57 return Unknown;
58
59 for (int i = 0; g_sATypes[i]; ++i) {
60 if (csType == g_sATypes[i])
61 return static_cast<ActionType>(i);
62 }
63 return Unknown;
64 }
65
GetFilePath() const66 WideString CPDF_Action::GetFilePath() const {
67 ByteString type = m_pDict->GetStringFor("S");
68 if (type != "GoToR" && type != "Launch" && type != "SubmitForm" &&
69 type != "ImportData") {
70 return WideString();
71 }
72
73 CPDF_Object* pFile = m_pDict->GetDirectObjectFor("F");
74 if (pFile)
75 return CPDF_FileSpec(pFile).GetFileName();
76
77 if (type == "Launch") {
78 CPDF_Dictionary* pWinDict = m_pDict->GetDictFor("Win");
79 if (pWinDict) {
80 return WideString::FromLocal(pWinDict->GetStringFor("F").AsStringView());
81 }
82 }
83 return WideString();
84 }
85
GetURI(const CPDF_Document * pDoc) const86 ByteString CPDF_Action::GetURI(const CPDF_Document* pDoc) const {
87 ByteString csURI;
88 if (!m_pDict)
89 return csURI;
90 if (m_pDict->GetStringFor("S") != "URI")
91 return csURI;
92
93 csURI = m_pDict->GetStringFor("URI");
94 const CPDF_Dictionary* pRoot = pDoc->GetRoot();
95 CPDF_Dictionary* pURI = pRoot->GetDictFor("URI");
96 if (pURI) {
97 auto result = csURI.Find(":");
98 if (!result.has_value() || result.value() == 0)
99 csURI = pURI->GetStringFor("Base") + csURI;
100 }
101 return csURI;
102 }
103
GetJavaScript() const104 WideString CPDF_Action::GetJavaScript() const {
105 WideString csJS;
106 if (!m_pDict)
107 return csJS;
108
109 CPDF_Object* pJS = m_pDict->GetDirectObjectFor("JS");
110 return pJS ? pJS->GetUnicodeText() : csJS;
111 }
112
GetSubActionsCount() const113 size_t CPDF_Action::GetSubActionsCount() const {
114 if (!m_pDict || !m_pDict->KeyExist("Next"))
115 return 0;
116
117 CPDF_Object* pNext = m_pDict->GetDirectObjectFor("Next");
118 if (!pNext)
119 return 0;
120 if (pNext->IsDictionary())
121 return 1;
122 if (CPDF_Array* pArray = pNext->AsArray())
123 return pArray->GetCount();
124 return 0;
125 }
126
GetSubAction(size_t iIndex) const127 CPDF_Action CPDF_Action::GetSubAction(size_t iIndex) const {
128 if (!m_pDict || !m_pDict->KeyExist("Next"))
129 return CPDF_Action(nullptr);
130
131 CPDF_Object* pNext = m_pDict->GetDirectObjectFor("Next");
132 if (CPDF_Array* pArray = ToArray(pNext))
133 return CPDF_Action(pArray->GetDictAt(iIndex));
134 if (CPDF_Dictionary* pDict = ToDictionary(pNext)) {
135 if (iIndex == 0)
136 return CPDF_Action(pDict);
137 }
138 return CPDF_Action(nullptr);
139 }
140