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Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp')
-rw-r--r--core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp163
1 files changed, 89 insertions, 74 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 9d958521bd..2fa2762906 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -14,7 +14,6 @@
#include "core/include/fpdfapi/fpdf_module.h"
#include "core/include/fpdfapi/fpdf_page.h"
#include "core/include/fpdfapi/fpdf_parser.h"
-#include "core/include/fxcrt/fx_ext.h"
#include "core/include/fxcrt/fx_safe_types.h"
#include "third_party/base/nonstd_unique_ptr.h"
#include "third_party/base/stl_util.h"
@@ -165,83 +164,85 @@ FX_DWORD CPDF_Parser::StartParse(IFX_FileRead* pFileAccess,
m_bXRefStream = FALSE;
m_LastXRefOffset = 0;
m_bOwnFileRead = bOwnFileRead;
-
int32_t offset = GetHeaderOffset(pFileAccess);
if (offset == -1) {
- if (bOwnFileRead && pFileAccess)
+ if (bOwnFileRead && pFileAccess) {
pFileAccess->Release();
+ }
return PDFPARSE_ERROR_FORMAT;
}
m_Syntax.InitParser(pFileAccess, offset);
-
uint8_t ch;
- if (!m_Syntax.GetCharAt(5, ch))
+ if (!m_Syntax.GetCharAt(5, ch)) {
return PDFPARSE_ERROR_FORMAT;
- if (std::isdigit(ch))
- m_FileVersion = FXSYS_toDecimalDigit(ch) * 10;
-
- if (!m_Syntax.GetCharAt(7, ch))
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion = (ch - '0') * 10;
+ }
+ if (!m_Syntax.GetCharAt(7, ch)) {
return PDFPARSE_ERROR_FORMAT;
- if (std::isdigit(ch))
- m_FileVersion += FXSYS_toDecimalDigit(ch);
-
- if (m_Syntax.m_FileLen < m_Syntax.m_HeaderOffset + 9)
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion += ch - '0';
+ }
+ if (m_Syntax.m_FileLen < m_Syntax.m_HeaderOffset + 9) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9);
- if (!bReParse)
+ if (!bReParse) {
m_pDocument = new CPDF_Document(this);
-
+ }
FX_BOOL bXRefRebuilt = FALSE;
if (m_Syntax.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, 4096)) {
FX_FILESIZE startxref_offset = m_Syntax.SavePos();
void* pResult = FXSYS_bsearch(&startxref_offset, m_SortedOffset.GetData(),
m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
CompareFileSize);
- if (!pResult)
+ if (pResult == NULL) {
m_SortedOffset.Add(startxref_offset);
-
+ }
m_Syntax.GetKeyword();
FX_BOOL bNumber;
CFX_ByteString xrefpos_str = m_Syntax.GetNextWord(bNumber);
- if (!bNumber)
+ if (!bNumber) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
m_LastXRefOffset = (FX_FILESIZE)FXSYS_atoi64(xrefpos_str);
if (!LoadAllCrossRefV4(m_LastXRefOffset) &&
!LoadAllCrossRefV5(m_LastXRefOffset)) {
- if (!RebuildCrossRef())
+ if (!RebuildCrossRef()) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
bXRefRebuilt = TRUE;
m_LastXRefOffset = 0;
}
} else {
- if (!RebuildCrossRef())
+ if (!RebuildCrossRef()) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
bXRefRebuilt = TRUE;
}
FX_DWORD dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS)
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
return dwRet;
-
+ }
m_pDocument->LoadDoc();
- if (!m_pDocument->GetRoot() || m_pDocument->GetPageCount() == 0) {
- if (bXRefRebuilt)
+ if (m_pDocument->GetRoot() == NULL || m_pDocument->GetPageCount() == 0) {
+ if (bXRefRebuilt) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
ReleaseEncryptHandler();
- if (!RebuildCrossRef())
+ if (!RebuildCrossRef()) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS)
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
return dwRet;
-
+ }
m_pDocument->LoadDoc();
- if (!m_pDocument->GetRoot())
+ if (m_pDocument->GetRoot() == NULL) {
return PDFPARSE_ERROR_FORMAT;
+ }
}
FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
sizeof(FX_FILESIZE), CompareFileSize);
@@ -250,12 +251,13 @@ FX_DWORD CPDF_Parser::StartParse(IFX_FileRead* pFileAccess,
ReleaseEncryptHandler();
RebuildCrossRef();
RootObjNum = GetRootObjNum();
- if (RootObjNum == 0)
+ if (RootObjNum == 0) {
return PDFPARSE_ERROR_FORMAT;
-
+ }
dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS)
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
return dwRet;
+ }
}
if (m_pSecurityHandler && !m_pSecurityHandler->IsMetadataEncrypted()) {
CPDF_Reference* pMetadata =
@@ -459,8 +461,9 @@ FX_BOOL CPDF_Parser::LoadLinearizedCrossRefV4(FX_FILESIZE pos,
int32_t offset = FXSYS_atoi(pEntry);
if (offset == 0) {
for (int32_t c = 0; c < 10; c++) {
- if (!std::isdigit(pEntry[c]))
+ if (pEntry[c] < '0' || pEntry[c] > '9') {
return FALSE;
+ }
}
}
m_CrossRef.SetAtGrow(objnum, offset);
@@ -559,8 +562,9 @@ bool CPDF_Parser::LoadCrossRefV4(FX_FILESIZE pos,
FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
if (offset == 0) {
for (int32_t c = 0; c < 10; c++) {
- if (!std::isdigit(pEntry[c]))
+ if (pEntry[c] < '0' || pEntry[c] > '9') {
return false;
+ }
}
}
m_CrossRef.SetAtGrow(objnum, offset);
@@ -628,32 +632,28 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
uint8_t byte = buffer[i];
switch (status) {
case 0:
- if (PDFCharIsWhitespace(byte))
+ if (PDFCharIsWhitespace(byte)) {
status = 1;
-
- if (std::isdigit(byte)) {
+ }
+ if (byte <= '9' && byte >= '0') {
--i;
status = 1;
}
-
if (byte == '%') {
inside_index = 0;
status = 9;
}
-
if (byte == '(') {
status = 10;
depth = 1;
}
-
if (byte == '<') {
inside_index = 1;
status = 11;
}
-
- if (byte == '\\')
+ if (byte == '\\') {
status = 13;
-
+ }
if (byte == 't') {
status = 7;
inside_index = 1;
@@ -662,10 +662,10 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
case 1:
if (PDFCharIsWhitespace(byte)) {
break;
- } else if (std::isdigit(byte)) {
+ } else if (byte <= '9' && byte >= '0') {
start_pos = pos + i;
status = 2;
- objnum = FXSYS_toDecimalDigit(byte);
+ objnum = byte - '0';
} else if (byte == 't') {
status = 7;
inside_index = 1;
@@ -678,8 +678,8 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
}
break;
case 2:
- if (std::isdigit(byte)) {
- objnum = objnum * 10 + FXSYS_toDecimalDigit(byte);
+ if (byte <= '9' && byte >= '0') {
+ objnum = objnum * 10 + byte - '0';
break;
} else if (PDFCharIsWhitespace(byte)) {
status = 3;
@@ -690,10 +690,10 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
}
break;
case 3:
- if (std::isdigit(byte)) {
+ if (byte <= '9' && byte >= '0') {
start_pos1 = pos + i;
status = 4;
- gennum = FXSYS_toDecimalDigit(byte);
+ gennum = byte - '0';
} else if (PDFCharIsWhitespace(byte)) {
break;
} else if (byte == 't') {
@@ -705,8 +705,8 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
}
break;
case 4:
- if (std::isdigit(byte)) {
- gennum = gennum * 10 + FXSYS_toDecimalDigit(byte);
+ if (byte <= '9' && byte >= '0') {
+ gennum = gennum * 10 + byte - '0';
break;
} else if (PDFCharIsWhitespace(byte)) {
status = 5;
@@ -721,9 +721,9 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() {
inside_index = 1;
} else if (PDFCharIsWhitespace(byte)) {
break;
- } else if (std::isdigit(byte)) {
+ } else if (byte <= '9' && byte >= '0') {
objnum = gennum;
- gennum = FXSYS_toDecimalDigit(byte);
+ gennum = byte - '0';
start_pos = start_pos1;
start_pos1 = pos + i;
status = 4;
@@ -1858,7 +1858,7 @@ CFX_ByteString CPDF_SyntaxParser::ReadString() {
break;
case 1:
if (ch >= '0' && ch <= '7') {
- iEscCode = FXSYS_toDecimalDigit(ch);
+ iEscCode = ch - '0';
status = 2;
break;
}
@@ -1883,7 +1883,7 @@ CFX_ByteString CPDF_SyntaxParser::ReadString() {
break;
case 2:
if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + FXSYS_toDecimalDigit(ch);
+ iEscCode = iEscCode * 8 + ch - '0';
status = 3;
} else {
buf.AppendChar(iEscCode);
@@ -1893,7 +1893,7 @@ CFX_ByteString CPDF_SyntaxParser::ReadString() {
break;
case 3:
if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + FXSYS_toDecimalDigit(ch);
+ iEscCode = iEscCode * 8 + ch - '0';
buf.AppendChar(iEscCode);
status = 0;
} else {
@@ -1918,33 +1918,48 @@ CFX_ByteString CPDF_SyntaxParser::ReadString() {
}
CFX_ByteString CPDF_SyntaxParser::ReadHexString() {
uint8_t ch;
- if (!GetNextChar(ch))
+ if (!GetNextChar(ch)) {
return CFX_ByteString();
-
+ }
CFX_BinaryBuf buf;
- bool bFirst = true;
+ FX_BOOL bFirst = TRUE;
uint8_t code = 0;
while (1) {
- if (ch == '>')
+ if (ch == '>') {
break;
-
- if (std::isxdigit(ch)) {
- int val = FXSYS_toHexDigit(ch);
+ }
+ if (ch >= '0' && ch <= '9') {
+ if (bFirst) {
+ code = (ch - '0') * 16;
+ } else {
+ code += ch - '0';
+ buf.AppendByte((uint8_t)code);
+ }
+ bFirst = !bFirst;
+ } else if (ch >= 'A' && ch <= 'F') {
if (bFirst) {
- code = val * 16;
+ code = (ch - 'A' + 10) * 16;
} else {
- code += val;
+ code += ch - 'A' + 10;
+ buf.AppendByte((uint8_t)code);
+ }
+ bFirst = !bFirst;
+ } else if (ch >= 'a' && ch <= 'f') {
+ if (bFirst) {
+ code = (ch - 'a' + 10) * 16;
+ } else {
+ code += ch - 'a' + 10;
buf.AppendByte((uint8_t)code);
}
bFirst = !bFirst;
}
-
- if (!GetNextChar(ch))
+ if (!GetNextChar(ch)) {
break;
+ }
}
- if (!bFirst)
+ if (!bFirst) {
buf.AppendByte((uint8_t)code);
-
+ }
return buf.GetByteString();
}
void CPDF_SyntaxParser::ToNextLine() {
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-07 11:51:11 +0000