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-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_security_handler.cpp38
-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_syntax_parser.cpp14
-rw-r--r--core/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp11
3 files changed, 27 insertions, 36 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_security_handler.cpp b/core/fpdfapi/fpdf_parser/cpdf_security_handler.cpp
index 054266765a..a4629dcf6b 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_security_handler.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_security_handler.cpp
@@ -430,10 +430,9 @@ FX_BOOL CPDF_SecurityHandler::CheckUserPassword(const uint8_t* password,
FXSYS_memset(test, 0, sizeof(test));
FXSYS_memset(tmpkey, 0, sizeof(tmpkey));
FXSYS_memcpy(test, ukey.c_str(), copy_len);
- for (int i = 19; i >= 0; i--) {
- for (int j = 0; j < key_len; j++) {
- tmpkey[j] = key[j] ^ i;
- }
+ for (int32_t i = 19; i >= 0; i--) {
+ for (int j = 0; j < key_len; j++)
+ tmpkey[j] = key[j] ^ static_cast<uint8_t>(i);
CRYPT_ArcFourCryptBlock(test, 32, tmpkey, key_len);
}
uint8_t md5[100];
@@ -457,14 +456,13 @@ CFX_ByteString CPDF_SecurityHandler::GetUserPassword(const uint8_t* owner_pass,
int32_t key_len) {
CFX_ByteString okey = m_pEncryptDict->GetStringBy("O");
uint8_t passcode[32];
- uint32_t i;
- for (i = 0; i < 32; i++) {
+ for (uint32_t i = 0; i < 32; i++) {
passcode[i] = i < pass_size ? owner_pass[i] : defpasscode[i - pass_size];
}
uint8_t digest[16];
CRYPT_MD5Generate(passcode, 32, digest);
if (m_Revision >= 3) {
- for (int i = 0; i < 50; i++) {
+ for (uint32_t i = 0; i < 50; i++) {
CRYPT_MD5Generate(digest, 16, digest);
}
}
@@ -485,12 +483,11 @@ CFX_ByteString CPDF_SecurityHandler::GetUserPassword(const uint8_t* owner_pass,
if (m_Revision == 2) {
CRYPT_ArcFourCryptBlock(okeybuf, okeylen, enckey, key_len);
} else {
- for (int i = 19; i >= 0; i--) {
+ for (int32_t i = 19; i >= 0; i--) {
uint8_t tempkey[32];
FXSYS_memset(tempkey, 0, sizeof(tempkey));
- for (int j = 0; j < m_KeyLen; j++) {
- tempkey[j] = enckey[j] ^ i;
- }
+ for (int j = 0; j < m_KeyLen; j++)
+ tempkey[j] = enckey[j] ^ static_cast<uint8_t>(i);
CRYPT_ArcFourCryptBlock(okeybuf, okeylen, tempkey, key_len);
}
}
@@ -553,30 +550,27 @@ void CPDF_SecurityHandler::OnCreate(CPDF_Dictionary* pEncryptDict,
}
if (bDefault) {
uint8_t passcode[32];
- uint32_t i;
- for (i = 0; i < 32; i++) {
+ for (uint32_t i = 0; i < 32; i++) {
passcode[i] =
i < owner_size ? owner_pass[i] : defpasscode[i - owner_size];
}
uint8_t digest[16];
CRYPT_MD5Generate(passcode, 32, digest);
if (m_Revision >= 3) {
- for (int i = 0; i < 50; i++) {
+ for (uint32_t i = 0; i < 50; i++)
CRYPT_MD5Generate(digest, 16, digest);
- }
}
uint8_t enckey[32];
FXSYS_memcpy(enckey, digest, key_len);
- for (i = 0; i < 32; i++) {
+ for (uint32_t i = 0; i < 32; i++) {
passcode[i] = i < user_size ? user_pass[i] : defpasscode[i - user_size];
}
CRYPT_ArcFourCryptBlock(passcode, 32, enckey, key_len);
uint8_t tempkey[32];
if (m_Revision >= 3) {
- for (i = 1; i <= 19; i++) {
- for (int j = 0; j < key_len; j++) {
- tempkey[j] = enckey[j] ^ (uint8_t)i;
- }
+ for (uint8_t i = 1; i <= 19; i++) {
+ for (int j = 0; j < key_len; j++)
+ tempkey[j] = enckey[j] ^ i;
CRYPT_ArcFourCryptBlock(passcode, 32, tempkey, key_len);
}
}
@@ -601,9 +595,9 @@ void CPDF_SecurityHandler::OnCreate(CPDF_Dictionary* pEncryptDict,
CRYPT_MD5Finish(md5, digest);
CRYPT_ArcFourCryptBlock(digest, 16, m_EncryptKey, key_len);
uint8_t tempkey[32];
- for (int i = 1; i <= 19; i++) {
+ for (uint8_t i = 1; i <= 19; i++) {
for (int j = 0; j < key_len; j++) {
- tempkey[j] = m_EncryptKey[j] ^ (uint8_t)i;
+ tempkey[j] = m_EncryptKey[j] ^ i;
}
CRYPT_ArcFourCryptBlock(digest, 16, tempkey, key_len);
}
diff --git a/core/fpdfapi/fpdf_parser/cpdf_syntax_parser.cpp b/core/fpdfapi/fpdf_parser/cpdf_syntax_parser.cpp
index 13a9972425..0eeb4a1afa 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_syntax_parser.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_syntax_parser.cpp
@@ -381,7 +381,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjectHolder* pObjList,
if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth)
return nullptr;
- FX_FILESIZE SavedPos = m_Pos;
+ FX_FILESIZE SavedObjPos = m_Pos;
bool bIsNumber;
CFX_ByteString word = GetNextWord(&bIsNumber);
if (word.GetLength() == 0)
@@ -392,10 +392,8 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjectHolder* pObjList,
CFX_ByteString nextword = GetNextWord(&bIsNumber);
if (bIsNumber) {
CFX_ByteString nextword2 = GetNextWord(nullptr);
- if (nextword2 == "R") {
- uint32_t objnum = FXSYS_atoui(word.c_str());
- return new CPDF_Reference(pObjList, objnum);
- }
+ if (nextword2 == "R")
+ return new CPDF_Reference(pObjList, FXSYS_atoui(word.c_str()));
}
m_Pos = SavedPos;
return new CPDF_Number(word.AsStringC());
@@ -492,7 +490,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjectHolder* pObjList,
}
if (word == ">>")
- m_Pos = SavedPos;
+ m_Pos = SavedObjPos;
return nullptr;
}
@@ -505,7 +503,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth)
return nullptr;
- FX_FILESIZE SavedPos = m_Pos;
+ FX_FILESIZE SavedObjPos = m_Pos;
bool bIsNumber;
CFX_ByteString word = GetNextWord(&bIsNumber);
if (word.GetLength() == 0)
@@ -605,7 +603,7 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
}
if (word == ">>")
- m_Pos = SavedPos;
+ m_Pos = SavedObjPos;
return nullptr;
}
diff --git a/core/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp b/core/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp
index e9f5a6d468..7c489a35dc 100644
--- a/core/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp
+++ b/core/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp
@@ -447,12 +447,11 @@ CFX_WideString PDF_DecodeText(const uint8_t* src_data, uint32_t src_len) {
if (unicode == 0x1b) {
i += 2;
while (i < max_chars * 2) {
- uint16_t unicode = bBE ? (uni_str[i] << 8 | uni_str[i + 1])
- : (uni_str[i + 1] << 8 | uni_str[i]);
+ uint16_t unicode2 = bBE ? (uni_str[i] << 8 | uni_str[i + 1])
+ : (uni_str[i + 1] << 8 | uni_str[i]);
i += 2;
- if (unicode == 0x1b) {
+ if (unicode2 == 0x1b)
break;
- }
}
} else {
dest_buf[dest_pos++] = unicode;
@@ -506,9 +505,9 @@ CFX_ByteString PDF_EncodeText(const FX_WCHAR* pString, int len) {
dest_buf2[0] = 0xfe;
dest_buf2[1] = 0xff;
dest_buf2 += 2;
- for (int i = 0; i < len; i++) {
+ for (int j = 0; j < len; j++) {
*dest_buf2++ = pString[i] >> 8;
- *dest_buf2++ = (uint8_t)pString[i];
+ *dest_buf2++ = (uint8_t)pString[j];
}
result.ReleaseBuffer(encLen);
return result;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 18:28:59 +0000