diff options
Diffstat (limited to 'odk/source/unoapploader/unx/unoapploader.c')
| -rw-r--r-- | odk/source/unoapploader/unx/unoapploader.c | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/odk/source/unoapploader/unx/unoapploader.c b/odk/source/unoapploader/unx/unoapploader.c new file mode 100644 index 0000000000..cc83b88bfa --- /dev/null +++ b/odk/source/unoapploader/unx/unoapploader.c @@ -0,0 +1,304 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 . + */ + +#include <stdlib.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <sys/stat.h> + +#ifdef LINUX +#define __USE_GNU +#endif +#include <dlfcn.h> + +#include <cppuhelper/findsofficepath.h> +#include <rtl/string.h> +#include <sal/types.h> + +static char* getPath(void); +static char* createCommandName( char* argv0 ); + +static const int SEPARATOR = '/'; +static const char* PATHSEPARATOR = ":"; + + +/* + * The main function implements a loader for applications which use UNO. + * + * <p>This code runs on the Unix/Linux platforms only.</p> + * + * <p>The main function detects a UNO installation on the system and adds the + * relevant directories of the installation to the LD_LIBRARY_PATH environment + * variable. After that, the application process is loaded and started, whereby + * the new process inherits the environment of the calling process, including + * the modified LD_LIBRARY_PATH environment variable. The application's + * executable name must be the same as the name of this executable, prefixed + * by '_'.</p> + * <p>On MACOSX DYLD_LIBRARY_PATH is used instead of LD_LIBRARY_PATH!<p> + * + * <p>A UNO installation can be specified by the user by setting the UNO_PATH + * environment variable to the program directory of the UNO installation. + * If no installation is specified by the user, the default installation on + * the system will be taken. The default installation is found from the + * PATH environment variable. This requires that the 'soffice' executable or + * a symbolic link is in one of the directories listed in the PATH environment + * variable.</p> + */ +int main( int argc, char *argv[] ) +{ + char* path; + char* cmdname; + + (void) argc; /* avoid warning about unused parameter */ + + /* get the path of the UNO installation */ + path = getPath(); + + if ( path != NULL ) + { +#if defined(MACOSX) + static const char* ENVVARNAME = "DYLD_LIBRARY_PATH"; +#else + static const char* ENVVARNAME = "LD_LIBRARY_PATH"; +#endif + char* libpath; + char* value; + char* envstr; + int size; + + size_t pathlen = strlen(path); + struct stat stats; + int ret; + + static char const unoinfoSuffix[] = "/unoinfo"; + char * unoinfo = malloc( + pathlen + RTL_CONSTASCII_LENGTH(unoinfoSuffix) + 1); + /*TODO: overflow */ + if (unoinfo == NULL) { + free(path); + fprintf(stderr, "Error: out of memory!\n"); + exit(EXIT_FAILURE); + } + strcpy(unoinfo, path); + strcpy( + unoinfo + pathlen, + unoinfoSuffix + (pathlen == 0 || path[pathlen - 1] != '/' ? 0 : 1)); + ret = lstat(unoinfo, &stats); + free(unoinfo); + + if (ret == 0) { + char * cmd = malloc( + 2 * pathlen + RTL_CONSTASCII_LENGTH("/unoinfo c++") + 1); + /*TODO: overflow */ + char const * p; + char * q; + FILE * f; + size_t n = 1000; + size_t old = 0; + if (cmd == NULL) { + fprintf(stderr, "Error: out of memory!\n"); + exit(EXIT_FAILURE); + } + p = path; + q = cmd; + while (*p != '\0') { + *q++ = '\\'; + *q++ = *p++; + } + if (p == path || p[-1] != '/') { + *q++ = '/'; + } + strcpy(q, "unoinfo c++"); + f = popen(cmd, "r"); + free(cmd); + if (f == NULL) + { + fprintf(stderr, "Error: calling unoinfo failed!\n"); + exit(EXIT_FAILURE); + } + libpath = NULL; + for (;;) { + size_t m; + libpath = realloc(libpath, n); + if (libpath == NULL) { + fprintf( + stderr, + "Error: out of memory reading unoinfo output!\n"); + exit(EXIT_FAILURE); + } + m = fread(libpath + old, 1, n - old - 1, f); + if (m != n - old - 1) { + if (ferror(f)) { + fprintf(stderr, "Error: cannot read unoinfo output!\n"); + exit(EXIT_FAILURE); + } + libpath[old + m] = '\0'; + break; + } + if (n >= SAL_MAX_SIZE / 2) { + fprintf( + stderr, + "Error: out of memory reading unoinfo output!\n"); + exit(EXIT_FAILURE); + } + old = n - 1; + n *= 2; + } + if (pclose(f) != 0) { + fprintf(stderr, "Error: executing unoinfo failed!\n"); + exit(EXIT_FAILURE); + } + free(path); + } + else + { + /* Assume an old OOo 2.x installation without unoinfo: */ + libpath = path; + } + + value = getenv( ENVVARNAME ); + + // workaround for finding wrong libsqlite3.dylib in the office installation + // For MacOS > 10.6 nss uses the system lib -> unresolved symbol _sqlite3_wal_checkpoint +#ifdef MACOSX + size = strlen( ENVVARNAME ) + strlen( "=/usr/lib:" ) + strlen( libpath ) + 1; +#else + size = strlen( ENVVARNAME ) + strlen( "=" ) + strlen( libpath ) + 1; +#endif + if ( value != NULL ) + size += strlen( PATHSEPARATOR ) + strlen( value ); + envstr = (char*) malloc( size ); + strcpy( envstr, ENVVARNAME ); +#ifdef MACOSX + strcat( envstr, "=/usr/lib:" ); +#else + strcat( envstr, "=" ); +#endif + strcat( envstr, libpath ); + free( libpath ); + if ( value != NULL ) + { + strcat( envstr, PATHSEPARATOR ); + strcat( envstr, value ); + } + /* coverity[tainted_data : FALSE] */ + putenv( envstr ); + } + else + { + fprintf( stderr, "Warning: no office installation found!\n" ); + fflush( stderr ); + } + + /* set the executable name for the application process */ + cmdname = createCommandName( argv[0] ); + argv[0] = cmdname; + + /* + * create the application process; + * if successful, execvp doesn't return to the calling process + */ + /* coverity[tainted_string] - createCommandName creates a safe string */ + execvp( cmdname, argv ); + fprintf( stderr, "Error: execvp failed!\n" ); + fflush( stderr ); + + return 0; +} + +/* + * Gets the path of a UNO installation. + * + * @return the installation path or NULL, if no installation was specified or + * found, or if an error occurred. + * Returned pointer must be released with free() + */ +char* getPath(void) +{ + char* path = cppuhelper_detail_findSofficePath(); + + if ( path == NULL ) + { + fprintf( stderr, "Warning: getting path from PATH environment " + "variable failed!\n" ); + fflush( stderr ); + } + + return path; +} + +/* + * Creates the application's executable file name. + * + * <p>The application's executable file name is the name of this executable + * prefixed by '_'.</p> + * + * @param argv0 specifies the argv[0] parameter of the main function + * + * @return the application's executable file name or NULL, if an error occurred + */ +char* createCommandName( char* argv0 ) +{ + const char* CMDPREFIX = "_"; + const char* prgname = NULL; + + char* cmdname = NULL; + char* sep = NULL; + Dl_info dl_info; + + /* get the executable file name from argv0 */ + prgname = argv0; + + /* + * if argv0 doesn't contain an absolute path name, try to get the absolute + * path name from dladdr; note that this only works for Solaris, not for + * Linux + */ + if ( argv0 != NULL && *argv0 != SEPARATOR && + dladdr( (void*) &createCommandName, &dl_info ) && + dl_info.dli_fname != NULL && *dl_info.dli_fname == SEPARATOR ) + { + prgname = dl_info.dli_fname; + } + + /* prefix the executable file name by '_' */ + if ( prgname != NULL ) + { + cmdname = (char*) malloc( strlen( prgname ) + strlen( CMDPREFIX ) + 1 ); + sep = strrchr( prgname, SEPARATOR ); + if ( sep != NULL ) + { + int pos = ++sep - prgname; + strncpy( cmdname, prgname, pos ); + cmdname[ pos ] = '\0'; + strcat( cmdname, CMDPREFIX ); + strcat( cmdname, sep ); + } + else + { + strcpy( cmdname, CMDPREFIX ); + strcat( cmdname, prgname ); + } + } + + return cmdname; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |