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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ppapi/proxy/pdf_resource.h"
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include "base/command_line.h"
#include "base/debug/crash_logging.h"
#include "base/metrics/histogram.h"
#include "base/strings/utf_string_conversions.h"
#include "gin/v8_initializer.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/private/ppb_pdf.h"
#include "ppapi/proxy/plugin_globals.h"
#include "ppapi/proxy/ppapi_messages.h"
#include "ppapi/shared_impl/var.h"
#include "third_party/icu/source/i18n/unicode/usearch.h"
namespace ppapi {
namespace proxy {
namespace {
// TODO(raymes): This is just copied from render_thread_impl.cc. We should have
// generic code somewhere to get the locale in the plugin.
std::string GetLocale() {
// The browser process should have passed the locale to the plugin via the
// --lang command line flag.
const base::CommandLine& parsed_command_line =
*base::CommandLine::ForCurrentProcess();
const std::string& lang = parsed_command_line.GetSwitchValueASCII("lang");
DCHECK(!lang.empty());
return lang;
}
} // namespace
PDFResource::PDFResource(Connection connection, PP_Instance instance)
: PluginResource(connection, instance) {
SendCreate(RENDERER, PpapiHostMsg_PDF_Create());
}
PDFResource::~PDFResource() {
}
thunk::PPB_PDF_API* PDFResource::AsPPB_PDF_API() {
return this;
}
void PDFResource::SearchString(const unsigned short* input_string,
const unsigned short* input_term,
bool case_sensitive,
PP_PrivateFindResult** results, int* count) {
if (locale_.empty())
locale_ = GetLocale();
const base::char16* string =
reinterpret_cast<const base::char16*>(input_string);
const base::char16* term =
reinterpret_cast<const base::char16*>(input_term);
UErrorCode status = U_ZERO_ERROR;
UStringSearch* searcher = usearch_open(term, -1, string, -1, locale_.c_str(),
0, &status);
DCHECK(status == U_ZERO_ERROR || status == U_USING_FALLBACK_WARNING ||
status == U_USING_DEFAULT_WARNING);
UCollationStrength strength = case_sensitive ? UCOL_TERTIARY : UCOL_PRIMARY;
UCollator* collator = usearch_getCollator(searcher);
if (ucol_getStrength(collator) != strength) {
ucol_setStrength(collator, strength);
usearch_reset(searcher);
}
status = U_ZERO_ERROR;
int match_start = usearch_first(searcher, &status);
DCHECK(status == U_ZERO_ERROR);
std::vector<PP_PrivateFindResult> pp_results;
while (match_start != USEARCH_DONE) {
int32_t matched_length = usearch_getMatchedLength(searcher);
PP_PrivateFindResult result;
result.start_index = match_start;
result.length = matched_length;
pp_results.push_back(result);
match_start = usearch_next(searcher, &status);
DCHECK(status == U_ZERO_ERROR);
}
if (pp_results.empty() ||
pp_results.size() > std::numeric_limits<uint32_t>::max() ||
pp_results.size() > SIZE_MAX / sizeof(PP_PrivateFindResult)) {
*count = 0;
*results = nullptr;
} else {
*count = static_cast<uint32_t>(pp_results.size());
const size_t result_size = pp_results.size() * sizeof(PP_PrivateFindResult);
*results = reinterpret_cast<PP_PrivateFindResult*>(malloc(result_size));
memcpy(*results, &pp_results[0], result_size);
}
usearch_close(searcher);
}
void PDFResource::DidStartLoading() {
Post(RENDERER, PpapiHostMsg_PDF_DidStartLoading());
}
void PDFResource::DidStopLoading() {
Post(RENDERER, PpapiHostMsg_PDF_DidStopLoading());
}
void PDFResource::SetContentRestriction(int restrictions) {
Post(RENDERER, PpapiHostMsg_PDF_SetContentRestriction(restrictions));
}
void PDFResource::UserMetricsRecordAction(const PP_Var& action) {
scoped_refptr<ppapi::StringVar> action_str(
ppapi::StringVar::FromPPVar(action));
if (action_str.get()) {
Post(RENDERER,
PpapiHostMsg_PDF_UserMetricsRecordAction(action_str->value()));
}
}
void PDFResource::HasUnsupportedFeature() {
Post(RENDERER, PpapiHostMsg_PDF_HasUnsupportedFeature());
}
void PDFResource::Print() {
Post(RENDERER, PpapiHostMsg_PDF_Print());
}
void PDFResource::SaveAs() {
Post(RENDERER, PpapiHostMsg_PDF_SaveAs());
}
PP_Bool PDFResource::IsFeatureEnabled(PP_PDFFeature feature) {
PP_Bool result = PP_FALSE;
switch (feature) {
case PP_PDFFEATURE_HIDPI:
result = PP_TRUE;
break;
case PP_PDFFEATURE_PRINTING:
// TODO(raymes): Use PrintWebViewHelper::IsPrintingEnabled.
result = PP_FALSE;
break;
}
return result;
}
void PDFResource::SetSelectedText(const char* selected_text) {
Post(RENDERER,
PpapiHostMsg_PDF_SetSelectedText(base::UTF8ToUTF16(selected_text)));
}
void PDFResource::SetLinkUnderCursor(const char* url) {
Post(RENDERER, PpapiHostMsg_PDF_SetLinkUnderCursor(url));
}
void PDFResource::GetV8ExternalSnapshotData(const char** natives_data_out,
int* natives_size_out,
const char** snapshot_data_out,
int* snapshot_size_out) {
gin::V8Initializer::GetV8ExternalSnapshotData(
natives_data_out, natives_size_out, snapshot_data_out, snapshot_size_out);
}
void PDFResource::SetAccessibilityDocInfo(
PP_PrivateAccessibilityDocInfo* doc_info) {
Post(RENDERER, PpapiHostMsg_PDF_SetAccessibilityDocInfo(*doc_info));
}
void PDFResource::SetAccessibilityViewportInfo(
PP_PrivateAccessibilityViewportInfo* viewport_info) {
Post(RENDERER, PpapiHostMsg_PDF_SetAccessibilityViewportInfo(*viewport_info));
}
void PDFResource::SetAccessibilityPageInfo(
PP_PrivateAccessibilityPageInfo* page_info,
PP_PrivateAccessibilityTextRunInfo text_runs[],
PP_PrivateAccessibilityCharInfo chars[]) {
std::vector<PP_PrivateAccessibilityTextRunInfo> text_run_vector(
text_runs, text_runs + page_info->text_run_count);
std::vector<PP_PrivateAccessibilityCharInfo> char_vector(
chars, chars + page_info->char_count);
Post(RENDERER, PpapiHostMsg_PDF_SetAccessibilityPageInfo(
*page_info, text_run_vector, char_vector));
}
void PDFResource::SetCrashData(const char* pdf_url, const char* top_level_url) {
if (pdf_url)
base::debug::SetCrashKeyValue("subresource_url", pdf_url);
if (top_level_url)
PluginGlobals::Get()->SetActiveURL(top_level_url);
}
} // namespace proxy
} // namespace ppapi
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