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Diffstat (limited to '')
| -rw-r--r-- | src/libs/xpcom18a4/xpcom/glue/standalone/nsGREDirServiceProvider.cpp | 596 |
1 files changed, 596 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/glue/standalone/nsGREDirServiceProvider.cpp b/src/libs/xpcom18a4/xpcom/glue/standalone/nsGREDirServiceProvider.cpp new file mode 100644 index 00000000..4a1247eb --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/glue/standalone/nsGREDirServiceProvider.cpp @@ -0,0 +1,596 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corp. + * Portions created by the Initial Developer are Copyright (C) 2003 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Sean Su <ssu@netscape.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#include "nsBuildID.h" + +#include "nsEmbedString.h" +#include "nsXPCOMPrivate.h" +#include "nsXPCOMGlue.h" +#include "nsILocalFile.h" +#include "nsIDirectoryService.h" +#include "nsDirectoryServiceDefs.h" +#include "nsCOMPtr.h" + +#include "nspr.h" +#include "plstr.h" + +#ifdef XP_WIN32 +#include <windows.h> +#include <stdlib.h> +#elif defined(XP_OS2) +#define INCL_DOS +#include <os2.h> +#include <stdlib.h> +#include <stdio.h> +#include "prenv.h" +#elif defined(XP_MACOSX) +#include <Processes.h> +#include <CFBundle.h> +#elif defined(XP_UNIX) +#include <unistd.h> +#include <stdlib.h> +#include <sys/param.h> +#include <dlfcn.h> +#include "prenv.h" +#elif defined(XP_BEOS) +#include <FindDirectory.h> +#include <Path.h> +#include <unistd.h> +#include <stdlib.h> +#include <sys/param.h> +#include <OS.h> +#include <image.h> +#include "prenv.h" +#endif + +#include <sys/stat.h> + +#include "nsGREDirServiceProvider.h" + +PRBool GRE_GetCurrentProcessDirectory(char* buffer); +PRBool GRE_GetPathFromConfigDir(const char* dirname, char* buffer); +PRBool GRE_GetPathFromConfigFile(const char* dirname, char* buffer); + +//***************************************************************************** +// nsGREDirServiceProvider::nsISupports +//***************************************************************************** + +NS_IMPL_ISUPPORTS1(nsGREDirServiceProvider, nsIDirectoryServiceProvider) + +//***************************************************************************** +// nsGREDirServiceProvider::nsIDirectoryServiceProvider +//***************************************************************************** + +NS_IMETHODIMP +nsGREDirServiceProvider::GetFile(const char *prop, PRBool *persistant, nsIFile **_retval) +{ + *_retval = nsnull; + *persistant = PR_TRUE; + + //--------------------------------------------------------------- + // Note that by returning a valid localFile's for NS_GRE_DIR, + // your app is indicating to XPCOM that it found a GRE version + // with which it's compatible with and intends to be "run against" + // that GRE. + // + // Please see http://www.mozilla.org/projects/embedding/GRE.html + // for more info on GRE. + //--------------------------------------------------------------- + if(strcmp(prop, NS_GRE_DIR) == 0) + { + nsILocalFile* lfile = nsnull; + nsresult rv = GRE_GetGREDirectory(&lfile); + *_retval = lfile; + return rv; + } + + return NS_ERROR_FAILURE; +} + +//***************************************************************************** +// Implementations from nsXPCOMGlue.h and helper functions. +//***************************************************************************** + +PRBool +GRE_GetCurrentProcessDirectory(char* buffer) +{ + *buffer = '\0'; + +#ifdef XP_WIN + if ( ::GetModuleFileName(0, buffer, MAXPATHLEN) ) { + // chop of the executable name by finding the rightmost backslash + char* lastSlash = PL_strrchr(buffer, '\\'); + if (lastSlash) { + *(lastSlash) = '\0'; + return PR_TRUE; + } + } + +#elif defined(XP_MACOSX) + // Works even if we're not bundled. + CFBundleRef appBundle = CFBundleGetMainBundle(); + if (appBundle != nsnull) + { + CFURLRef bundleURL = CFBundleCopyExecutableURL(appBundle); + if (bundleURL != nsnull) + { + CFURLRef parentURL = CFURLCreateCopyDeletingLastPathComponent(kCFAllocatorDefault, bundleURL); + if (parentURL) + { + CFStringRef path = CFURLCopyFileSystemPath(parentURL, kCFURLPOSIXPathStyle); + if (path) + { + CFStringGetCString(path, buffer, MAXPATHLEN, kCFStringEncodingUTF8); + CFRelease(path); + } + CFRelease(parentURL); + } + CFRelease(bundleURL); + } +#if 0 /* bird: Causes crashes in objc_msgSend() later if released. I dunno why really. + Something could be seriously screwed up somewhere else, but this'll have + to do for now. (appBundle isn't released in the other place it's used.) */ + CFRelease(appBundle); +#endif + } + if (*buffer) return PR_TRUE; + +#elif defined(XP_UNIX) + +#if 0 /* we need .so location. */ + // Actually we have a way on linux. + static volatile bool fPathSet = false; + static char szPath[MAXPATHLEN]; + if (!fPathSet) + { + char buf2[MAXPATHLEN + 3]; + buf2[0] = '\0'; + + /* + * Env.var. VBOX_XPCOM_HOME first. + */ + char *psz = PR_GetEnv("VBOX_XPCOM_HOME"); + if (psz) + { + if (strlen(psz) < MAXPATHLEN) + { + if (!realpath(psz, buf2)) + strcpy(buf2, psz); + strcat(buf2, "/x"); /* for the filename stripping */ + } + } + + /* + * The dynamic loader. + */ + if (!buf2[0]) + { + Dl_info DlInfo = {0}; + if ( !dladdr((const void *)GRE_GetCurrentProcessDirectory, &DlInfo) + && DlInfo.dli_fname) + { + if (!realpath(DlInfo.dli_fname, buf2)) + buf2[0] = '\0'; + } + } + + /* + * Executable location. + */ + if (!buf2[0]) + { + char buf[MAXPATHLEN]; + int cchLink = readlink("/proc/self/exe", buf, sizeof(buf) - 1); + if (cchLink > 0 || cchLink != sizeof(buf) - 1) + { + buf[cchLink] = '\0'; + if (!realpath(buf, buf2)) + buf2[0] = '\0'; + } + } + + /* + * Copy to static buffer on success. + */ + if (buf2[0]) + { + char *p = strrchr(buf2, '/'); + if (p) + { + p[p == buf2] = '\0'; + #ifdef DEBUG + printf("debug: (1) VBOX_XPCOM_HOME=%s\n", buf2); + #endif + strcpy(szPath, buf2); + fPathSet = true; + } + } + } + if (fPathSet) + { + strcpy(buffer, szPath); + return PR_TRUE; + } +#endif + + // In the absence of a good way to get the executable directory let + // us try this for unix: + // - if VBOX_XPCOM_HOME is defined, that is it + // - else give the current directory + + // The MOZ_DEFAULT_VBOX_XPCOM_HOME variable can be set at configure time with + // a --with-default-mozilla-five-home=foo autoconf flag. + // + // The idea here is to allow for builds that have a default VBOX_XPCOM_HOME + // regardless of the environment. This makes it easier to write apps that + // embed mozilla without having to worry about setting up the environment + // + // We do this py putenv()ing the default value into the environment. Note that + // we only do this if it is not already set. +#ifdef MOZ_DEFAULT_VBOX_XPCOM_HOME + if (PR_GetEnv("VBOX_XPCOM_HOME") == nsnull) + { + putenv("VBOX_XPCOM_HOME=" MOZ_DEFAULT_VBOX_XPCOM_HOME); + } +#endif + + char *moz5 = PR_GetEnv("VBOX_XPCOM_HOME"); + + if (moz5 && *moz5) + { + if (!realpath(moz5, buffer)) + strcpy(buffer, moz5); + + return PR_TRUE; + } + else + { +#if defined(DEBUG) + static PRBool firstWarning = PR_TRUE; + + if(firstWarning) { + // Warn that VBOX_XPCOM_HOME not set, once. + printf("Warning: VBOX_XPCOM_HOME not set.\n"); + firstWarning = PR_FALSE; + } +#endif /* DEBUG */ + + // Fall back to current directory. + if (getcwd(buffer, MAXPATHLEN)) + { + return PR_TRUE; + } + } + +#elif defined(XP_OS2) + PPIB ppib; + PTIB ptib; + char* p; + DosGetInfoBlocks( &ptib, &ppib); + DosQueryModuleName( ppib->pib_hmte, MAXPATHLEN, buffer); + p = strrchr( buffer, '\\'); // XXX DBCS misery + if (p) { + *p = '\0'; + return PR_TRUE; + } + +#elif defined(XP_BEOS) + + char *moz5 = getenv("VBOX_XPCOM_HOME"); + if (moz5) + { + strcpy(buffer, moz5); + return PR_TRUE; + } + else + { + int32 cookie = 0; + image_info info; + char *p; + *buffer = 0; + if(get_next_image_info(0, &cookie, &info) == B_OK) + { + strcpy(buffer, info.name); + if((p = strrchr(buffer, '/')) != 0) + { + *p = 0; + + return PR_TRUE; + } + } + } + +#endif + + return PR_FALSE; +} + +/** + * the GRE location is stored in a static buffer so that we don't have + * to compute it multiple times. + */ + +static char sGRELocation[MAXPATHLEN] = ""; + +extern "C" char const * +GRE_GetGREPath() +{ + // we've already done this... + if (*sGRELocation) + return sGRELocation; + + char buffer[MAXPATHLEN]; + + // If the xpcom library exists in the current process directory, + // then we will not use any GRE. The assumption here is that the + // GRE is in the same directory as the executable. + if (GRE_GetCurrentProcessDirectory(buffer)) { + PRUint32 pathlen = strlen(buffer); + strcpy(buffer + pathlen, XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL); + + struct stat libStat; + int statResult = stat(buffer, &libStat); + + if (statResult != -1) { + //found our xpcom lib in the current process directory + buffer[pathlen] = '\0'; + strcpy(sGRELocation, buffer); + return sGRELocation; + } + } + + // if GRE_HOME is in the environment, use that GRE + const char* env = PR_GetEnv("GRE_HOME"); + if (env && *env) { +#if XP_UNIX + if (!realpath(env, sGRELocation)) + strcpy(sGRELocation, env); +#elif XP_WIN32 + if (!_fullpath(sGRELocation, env, MAXPATHLEN)) + strcpy(sGRELocation, env); +#endif + // xxxbsmedberg: it would help that other platforms had a "make absolute" function + return sGRELocation; + } + + // the Gecko bits that sit next to the application or in the LD_LIBRARY_PATH + env = PR_GetEnv("USE_LOCAL_GRE"); + if (env && *env) + return nsnull; + +#if XP_UNIX + // check in the HOME directory + env = PR_GetEnv("HOME"); + if (env && *env) { +# ifdef VBOX + snprintf(buffer, sizeof(buffer), "%s" XPCOM_FILE_PATH_SEPARATOR GRE_CONF_NAME, env); +# else + sprintf(buffer, "%s" XPCOM_FILE_PATH_SEPARATOR GRE_CONF_NAME, env); +# endif + + if (GRE_GetPathFromConfigFile(buffer, sGRELocation)) { + return sGRELocation; + } + } +#endif + + env = PR_GetEnv("MOZ_GRE_CONF"); + if (env) { + if (GRE_GetPathFromConfigFile(env, sGRELocation)) { + return sGRELocation; + } + } + +#if XP_UNIX + // Look for a group of config files in /etc/gre.d/ + if (GRE_GetPathFromConfigDir(GRE_CONF_DIR, sGRELocation)) { + return sGRELocation; + } + + // Look for a global /etc/gre.conf file + if (GRE_GetPathFromConfigFile(GRE_CONF_PATH, sGRELocation)) { + return sGRELocation; + } +#endif + +#if XP_WIN32 + char szKey[256]; + HKEY hRegKey = NULL; + DWORD dwLength = MAXPATHLEN; + + // A couple of key points here: + // 1. Note the usage of the "Software\\Mozilla\\GRE" subkey - this allows + // us to have multiple versions of GREs on the same machine by having + // subkeys such as 1.0, 1.1, 2.0 etc. under it. + // 2. In this sample below we're looking for the location of GRE version 1.2 + // i.e. we're compatible with GRE 1.2 and we're trying to find it's install + // location. + // + // Please see http://www.mozilla.org/projects/embedding/GRE.html for + // more info. + // + strcpy(szKey, GRE_WIN_REG_LOC GRE_BUILD_ID); + + if (::RegOpenKeyEx(HKEY_CURRENT_USER, szKey, 0, KEY_QUERY_VALUE, &hRegKey) == ERROR_SUCCESS) { + if (::RegQueryValueEx(hRegKey, "GreHome", NULL, NULL, (BYTE *)sGRELocation, &dwLength) != ERROR_SUCCESS) { + *sGRELocation = '\0'; + } + ::RegCloseKey(hRegKey); + + if (*sGRELocation) + return sGRELocation; + } + + if (::RegOpenKeyEx(HKEY_LOCAL_MACHINE, szKey, 0, KEY_QUERY_VALUE, &hRegKey) == ERROR_SUCCESS) { + if (::RegQueryValueEx(hRegKey, "GreHome", NULL, NULL, (BYTE *)sGRELocation, &dwLength) != ERROR_SUCCESS) { + *sGRELocation = '\0'; + } + ::RegCloseKey(hRegKey); + + if (*sGRELocation) + return sGRELocation; + } +#endif + + return nsnull; +} + +PRBool +GRE_GetPathFromConfigDir(const char* dirname, char* buffer) +{ + // Open the directory provided and try to read any files in that + // directory that end with .conf. We look for an entry that might + // point to the GRE that we're interested in. + PRDir *dir = PR_OpenDir(dirname); + if (!dir) + return nsnull; + + PRBool found = PR_FALSE; + PRDirEntry *entry; + + while (!found && (entry = PR_ReadDir(dir, PR_SKIP_BOTH))) { + + // Only look for files that end in .conf + char *offset = PL_strrstr(entry->name, ".conf"); + if (!offset) + continue; + + if (offset != entry->name + strlen(entry->name) - 5) + continue; + + nsEmbedCString fullPath; + NS_CStringAppendData(fullPath, dirname); + NS_CStringAppendData(fullPath, XPCOM_FILE_PATH_SEPARATOR); + NS_CStringAppendData(fullPath, entry->name); + + found = GRE_GetPathFromConfigFile(fullPath.get(), buffer); + } + + PR_CloseDir(dir); + + return found; +} + +PRBool +GRE_GetPathFromConfigFile(const char* filename, char* pathBuffer) +{ + *pathBuffer = '\0'; + char buffer[1024]; + FILE *cfg; + PRBool foundHeader = PR_FALSE; + PRInt32 versionLen = sizeof(GRE_BUILD_ID)-1; + + if((cfg=fopen(filename,"r"))==nsnull) { + return nsnull; + } + + while (fgets(buffer, 1024, cfg) != nsnull) { + // skip over comment lines and blank lines + if (buffer[0] == '#' || buffer[0] == '\n') { + continue; + } + + // we found a section heading, check to see if it is the one we are intersted in. + if (buffer[0] == '[') { + if (!strncmp (buffer+1, GRE_BUILD_ID, versionLen)) { + foundHeader = PR_TRUE; + } + continue; + } + + if (foundHeader && !strncmp (buffer, "GRE_PATH=", 9)) { + strcpy(pathBuffer, buffer + 9); + // kill the line feed if any + PRInt32 len = strlen(pathBuffer); + len--; + + if (pathBuffer[len] == '\n') + pathBuffer[len] = '\0'; + break; + } + } + fclose(cfg); + return (*pathBuffer != '\0'); +} + +extern "C" nsresult +GRE_GetGREDirectory(nsILocalFile* *_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + nsresult rv = NS_ERROR_FAILURE; + + // Get the path of the GRE which is compatible with our embedding application + // from the registry + + const char *pGREDir = GRE_GetGREPath(); + if(pGREDir) { + nsCOMPtr<nsILocalFile> tempLocal; + nsEmbedCString leaf; + NS_CStringSetData(leaf, pGREDir); + rv = NS_NewNativeLocalFile(leaf, PR_TRUE, getter_AddRefs(tempLocal)); + + if (NS_SUCCEEDED(rv)) { + *_retval = tempLocal; + NS_ADDREF(*_retval); + } + } + return rv; +} + +static char sXPCOMPath[MAXPATHLEN]; + +extern "C" const char* +GRE_GetXPCOMPath() +{ + const char* grePath = GRE_GetGREPath(); + + if (!grePath) { + grePath = PR_GetEnv("VBOX_XPCOM_HOME"); + if (!grePath || !*grePath) { + return nsnull; + } + } + +#ifdef VBOX + snprintf(sXPCOMPath, sizeof(sXPCOMPath), "%s" XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL, grePath); +#else + sprintf(sXPCOMPath, "%s" XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL, grePath); +#endif + + return sXPCOMPath; +} |