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-rw-r--r--fpdfsdk/fpdftext.cpp58
1 files changed, 30 insertions, 28 deletions
diff --git a/fpdfsdk/fpdftext.cpp b/fpdfsdk/fpdftext.cpp
index 007e18274e..2a84131422 100644
--- a/fpdfsdk/fpdftext.cpp
+++ b/fpdfsdk/fpdftext.cpp
@@ -12,6 +12,7 @@
#include "core/fpdftext/include/cpdf_textpage.h"
#include "core/fpdftext/include/cpdf_textpagefind.h"
#include "fpdfsdk/include/fsdk_define.h"
+#include "third_party/base/numerics/safe_conversions.h"
#ifdef PDF_ENABLE_XFA
#include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
@@ -273,8 +274,9 @@ DLLEXPORT FPDF_PAGELINK STDCALL FPDFLink_LoadWebLinks(FPDF_TEXTPAGE text_page) {
if (!text_page)
return nullptr;
- CPDF_LinkExtract* pageLink = new CPDF_LinkExtract;
- pageLink->ExtractLinks(CPDFTextPageFromFPDFTextPage(text_page));
+ CPDF_LinkExtract* pageLink =
+ new CPDF_LinkExtract(CPDFTextPageFromFPDFTextPage(text_page));
+ pageLink->ExtractLinks();
return pageLink;
}
@@ -283,42 +285,40 @@ DLLEXPORT int STDCALL FPDFLink_CountWebLinks(FPDF_PAGELINK link_page) {
return 0;
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
- return pageLink->CountLinks();
+ return pdfium::base::checked_cast<int>(pageLink->CountLinks());
}
DLLEXPORT int STDCALL FPDFLink_GetURL(FPDF_PAGELINK link_page,
int link_index,
unsigned short* buffer,
int buflen) {
- if (!link_page)
- return 0;
-
- CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
- CFX_WideString url = pageLink->GetURL(link_index);
-
- CFX_ByteString cbUTF16URL = url.UTF16LE_Encode();
- int len = cbUTF16URL.GetLength() / sizeof(unsigned short);
+ CFX_WideString wsUrl(L"");
+ if (link_page && link_index >= 0) {
+ CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
+ wsUrl = pageLink->GetURL(link_index);
+ }
+ CFX_ByteString cbUTF16URL = wsUrl.UTF16LE_Encode();
+ int required = cbUTF16URL.GetLength() / sizeof(unsigned short);
if (!buffer || buflen <= 0)
- return len;
+ return required;
- int size = len < buflen ? len : buflen;
+ int size = std::min(required, buflen);
if (size > 0) {
int buf_size = size * sizeof(unsigned short);
FXSYS_memcpy(buffer, cbUTF16URL.GetBuffer(buf_size), buf_size);
- cbUTF16URL.ReleaseBuffer(buf_size);
}
return size;
}
DLLEXPORT int STDCALL FPDFLink_CountRects(FPDF_PAGELINK link_page,
int link_index) {
- if (!link_page)
+ if (!link_page || link_index < 0)
return 0;
+ CFX_RectArray rects;
CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
- CFX_RectArray rectArray;
- pageLink->GetRects(link_index, rectArray);
- return rectArray.GetSize();
+ pageLink->GetRects(link_index, &rects);
+ return rects.GetSize();
}
DLLEXPORT void STDCALL FPDFLink_GetRect(FPDF_PAGELINK link_page,
@@ -328,20 +328,22 @@ DLLEXPORT void STDCALL FPDFLink_GetRect(FPDF_PAGELINK link_page,
double* top,
double* right,
double* bottom) {
- if (!link_page)
+ if (!link_page || link_index < 0 || rect_index < 0)
return;
- CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
CFX_RectArray rectArray;
- pageLink->GetRects(link_index, rectArray);
- if (rect_index >= 0 && rect_index < rectArray.GetSize()) {
- CFX_FloatRect rect = rectArray.GetAt(rect_index);
- *left = rect.left;
- *right = rect.right;
- *top = rect.top;
- *bottom = rect.bottom;
- }
+ CPDF_LinkExtract* pageLink = CPDFLinkExtractFromFPDFPageLink(link_page);
+ pageLink->GetRects(link_index, &rectArray);
+ if (rect_index >= rectArray.GetSize())
+ return;
+
+ CFX_FloatRect rect = rectArray.GetAt(rect_index);
+ *left = rect.left;
+ *right = rect.right;
+ *top = rect.top;
+ *bottom = rect.bottom;
}
+
DLLEXPORT void STDCALL FPDFLink_CloseWebLinks(FPDF_PAGELINK link_page) {
delete CPDFLinkExtractFromFPDFPageLink(link_page);
}