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From d2f5d424ba8752f9a9e9dad410546ec1b46caa0a Mon Sep 17 00:00:00 2001
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From: Adam Reichold <adam.reichold@t-online.de>
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Date: Tue, 6 Nov 2018 09:08:06 +0100
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Subject: [PATCH] pdfdetach: Check for valid file name of embedded file before
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using it to determine save path.
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Closes #660
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---
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utils/pdfdetach.cc | 24 ++++++++++++++++++------
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1 file changed, 18 insertions(+), 6 deletions(-)
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diff --git a/utils/pdfdetach.cc b/utils/pdfdetach.cc
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index a8720c64..71fa8608 100644
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--- a/utils/pdfdetach.cc
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+++ b/utils/pdfdetach.cc
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@@ -191,14 +191,18 @@ int main(int argc, char *argv[]) {
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fileSpec = static_cast<FileSpec *>(embeddedFiles->get(i));
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printf("%d: ", i+1);
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s1 = fileSpec->getFileName();
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- if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
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+ if (!s1) {
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+ exitCode = 3;
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+ goto err2;
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+ }
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+ if (s1->hasUnicodeMarker()) {
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isUnicode = gTrue;
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j = 2;
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} else {
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isUnicode = gFalse;
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j = 0;
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}
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- while (j < fileSpec->getFileName()->getLength()) {
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+ while (j < s1->getLength()) {
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if (isUnicode) {
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u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
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j += 2;
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@@ -228,14 +232,18 @@ int main(int argc, char *argv[]) {
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p = path;
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}
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s1 = fileSpec->getFileName();
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- if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
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+ if (!s1) {
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+ exitCode = 3;
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+ goto err2;
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+ }
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+ if (s1->hasUnicodeMarker()) {
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isUnicode = gTrue;
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j = 2;
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} else {
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isUnicode = gFalse;
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j = 0;
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}
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- while (j < fileSpec->getFileName()->getLength()) {
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+ while (j < s1->getLength()) {
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if (isUnicode) {
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u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
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j += 2;
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@@ -276,14 +284,18 @@ int main(int argc, char *argv[]) {
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} else {
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p = path;
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s1 = fileSpec->getFileName();
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- if ((s1->getChar(0) & 0xff) == 0xfe && (s1->getChar(1) & 0xff) == 0xff) {
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+ if (!s1) {
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+ exitCode = 3;
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+ goto err2;
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+ }
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+ if (s1->hasUnicodeMarker()) {
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isUnicode = gTrue;
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j = 2;
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} else {
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isUnicode = gFalse;
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j = 0;
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}
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- while (j < fileSpec->getFileName()->getLength()) {
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+ while (j < s1->getLength()) {
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if (isUnicode) {
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u = ((s1->getChar(j) & 0xff) << 8) | (s1->getChar(j+1) & 0xff);
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j += 2;
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--
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2.19.1
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