The Tor Browser / file comparison
comparison: widget/gtk/nsCUPSShim.cpp
widget/gtk/nsCUPSShim.cpp
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
equal
deleted
inserted
replaced
| -1:000000000000 | 0:04ac6302450b |
|---|---|
| 1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */ | |
| 3 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #include "nsDebug.h" | |
| 8 #include "nsString.h" | |
| 9 #include "nsCUPSShim.h" | |
| 10 #include "mozilla/ArrayUtils.h" | |
| 11 #include "prlink.h" | |
| 12 | |
| 13 | |
| 14 // List of symbols to find in libcups. Must match symAddr[] defined in Init(). | |
| 15 // Making this an array of arrays instead of pointers allows storing the | |
| 16 // whole thing in read-only memory. | |
| 17 static const char gSymName[][sizeof("cupsPrintFile")] = { | |
| 18 { "cupsAddOption" }, | |
| 19 { "cupsFreeDests" }, | |
| 20 { "cupsGetDest" }, | |
| 21 { "cupsGetDests" }, | |
| 22 { "cupsPrintFile" }, | |
| 23 { "cupsTempFd" }, | |
| 24 }; | |
| 25 static const int gSymNameCt = mozilla::ArrayLength(gSymName); | |
| 26 | |
| 27 | |
| 28 bool | |
| 29 nsCUPSShim::Init() | |
| 30 { | |
| 31 mCupsLib = PR_LoadLibrary("libcups.so.2"); | |
| 32 if (!mCupsLib) | |
| 33 return false; | |
| 34 | |
| 35 // List of symbol pointers. Must match gSymName[] defined above. | |
| 36 void **symAddr[] = { | |
| 37 (void **)&mCupsAddOption, | |
| 38 (void **)&mCupsFreeDests, | |
| 39 (void **)&mCupsGetDest, | |
| 40 (void **)&mCupsGetDests, | |
| 41 (void **)&mCupsPrintFile, | |
| 42 (void **)&mCupsTempFd, | |
| 43 }; | |
| 44 | |
| 45 for (int i = gSymNameCt; i--; ) { | |
| 46 *(symAddr[i]) = PR_FindSymbol(mCupsLib, gSymName[i]); | |
| 47 if (! *(symAddr[i])) { | |
| 48 #ifdef DEBUG | |
| 49 nsAutoCString msg(gSymName[i]); | |
| 50 msg.Append(" not found in CUPS library"); | |
| 51 NS_WARNING(msg.get()); | |
| 52 #endif | |
| 53 PR_UnloadLibrary(mCupsLib); | |
| 54 mCupsLib = nullptr; | |
| 55 return false; | |
| 56 } | |
| 57 } | |
| 58 return true; | |
| 59 } |
