diff options
Diffstat (limited to 'src/libs/xpcom18a4/nsprpub/pr/src/linking/prlink.c')
| -rw-r--r-- | src/libs/xpcom18a4/nsprpub/pr/src/linking/prlink.c | 2147 |
1 files changed, 2147 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/nsprpub/pr/src/linking/prlink.c b/src/libs/xpcom18a4/nsprpub/pr/src/linking/prlink.c new file mode 100644 index 00000000..faad8af2 --- /dev/null +++ b/src/libs/xpcom18a4/nsprpub/pr/src/linking/prlink.c @@ -0,0 +1,2147 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* + * 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 the Netscape Portable Runtime (NSPR). + * + * The Initial Developer of the Original Code is Netscape + * Communications Corporation. Portions created by Netscape are + * Copyright (C) 1998-2000 Netscape Communications Corporation. All + * Rights Reserved. + * + * Contributor(s): Steve Streeter (Hewlett-Packard Company) + * + * Alternatively, the contents of this file may be used under the + * terms of the GNU General Public License Version 2 or later (the + * "GPL"), in which case the provisions of the GPL are applicable + * instead of those above. If you wish to allow use of your + * version of this file only under the terms of the GPL and not to + * allow others to use your version of this file under the MPL, + * indicate your decision by deleting the provisions above and + * replace them with the notice and other provisions required by + * the GPL. If you do not delete the provisions above, a recipient + * may use your version of this file under either the MPL or the + * GPL. + */ + +#include "primpl.h" + +#ifdef VBOX_WITH_XPCOM_NAMESPACE_CLEANUP +#define PR_FindLibrary VBoxNsprPR_FindLibrary +#endif /* VBOX_WITH_XPCOM_NAMESPACE_CLEANUP */ + +#include <string.h> + +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR +# include <iprt/ldr.h> +# include <iprt/path.h> +# include <iprt/err.h> + +# if defined(XP_MACOSX) /** @todo Add some equivalent to PR_GetLibraryFilePathname. */ +# include <mach-o/dyld.h> +# endif + +# ifdef XP_MAC +# error "Misconfiguration: XP_MAC && VBOX_USE_MORE_IPRT_IN_NSPR are not intended to work together" +# endif + +#else /* ! VBOX_USE_MORE_IPRT_IN_NSPR */ + +#ifdef XP_BEOS +#include <image.h> +#endif + +#if defined(XP_MAC) || defined(XP_MACOSX) +#include <CodeFragments.h> +#include <TextUtils.h> +#include <Types.h> +#include <Aliases.h> + +#if TARGET_CARBON +#include <CFURL.h> +#include <CFBundle.h> +#include <CFString.h> +#include <CFDictionary.h> +#include <CFData.h> +#endif + +#if defined(XP_MACOSX) +#define PStrFromCStr(src, dst) c2pstrcpy(dst, src) +#else +#include "macdll.h" +#include "mdmac.h" +#endif /* XP_MACOSX */ +#endif + +#ifdef XP_UNIX +#ifdef USE_DLFCN +#include <dlfcn.h> +/* Define these on systems that don't have them. */ +#ifndef RTLD_NOW +#define RTLD_NOW 0 +#endif +#ifndef RTLD_LAZY +#define RTLD_LAZY RTLD_NOW +#endif +#ifndef RTLD_GLOBAL +#define RTLD_GLOBAL 0 +#endif +#ifndef RTLD_LOCAL +#define RTLD_LOCAL 0 +#endif +#ifdef AIX +#include <sys/ldr.h> +#endif +#ifdef OSF1 +#include <loader.h> +#include <rld_interface.h> +#endif +#elif defined(USE_HPSHL) +#include <dl.h> +#elif defined(USE_MACH_DYLD) +#include <mach-o/dyld.h> +#endif +#endif /* XP_UNIX */ + +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ +#ifdef VBOX_USE_IPRT_IN_NSPR +# include <iprt/mem.h> +# include <iprt/string.h> +# undef strdup +# define strdup(str) RTStrDup(str) +#endif + +#define _PR_DEFAULT_LD_FLAGS PR_LD_LAZY + +#ifdef VMS +/* These are all require for the PR_GetLibraryFilePathname implementation */ +#include <descrip.h> +#include <dvidef.h> +#include <fibdef.h> +#include <iodef.h> +#include <lib$routines.h> +#include <ssdef.h> +#include <starlet.h> +#include <stsdef.h> +#include <unixlib.h> + +#pragma __nostandard +#pragma __member_alignment __save +#pragma __nomember_alignment +#ifdef __INITIAL_POINTER_SIZE +#pragma __required_pointer_size __save +#pragma __required_pointer_size __short +#endif + +typedef struct _imcb { + struct _imcb *imcb$l_flink; + struct _imcb *imcb$l_blink; + unsigned short int imcb$w_size; + unsigned char imcb$b_type; + char imcb$b_resv_1; + unsigned char imcb$b_access_mode; + unsigned char imcb$b_act_code; + unsigned short int imcb$w_chan; + unsigned int imcb$l_flags; + char imcb$t_image_name [40]; + unsigned int imcb$l_symvec_size; + unsigned __int64 imcb$q_ident; + void *imcb$l_starting_address; + void *imcb$l_end_address; +} IMCB; + +#pragma __member_alignment __restore +#ifdef __INITIAL_POINTER_SIZE +#pragma __required_pointer_size __restore +#endif +#pragma __standard + +typedef struct { + short buflen; + short itmcode; + void *buffer; + void *retlen; +} ITMLST; + +typedef struct { + short cond; + short count; + int rest; +} IOSB; + +typedef unsigned long int ulong_t; + +struct _imcb *IAC$GL_IMAGE_LIST = NULL; + +#define MAX_DEVNAM 64 +#define MAX_FILNAM 255 +#endif /* VMS */ + +/* + * On these platforms, symbols have a leading '_'. + */ +#ifndef VBOX_USE_MORE_IPRT_IN_NSPR /* RTLdr hides this. */ +#if defined(SUNOS4) || defined(DARWIN) || defined(NEXTSTEP) \ + || defined(WIN16) || defined(XP_OS2) \ + || ((defined(OPENBSD) || defined(NETBSD)) && !defined(__ELF__)) +#define NEED_LEADING_UNDERSCORE +#endif +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + +#ifdef XP_PC +typedef PRStaticLinkTable *NODL_PROC(void); +#endif + +/************************************************************************/ + +struct PRLibrary { + char* name; /* Our own copy of the name string */ + PRLibrary* next; + int refCount; + const PRStaticLinkTable* staticTable; + +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR + RTLDRMOD dlh; +#else /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + +#ifdef XP_PC +#ifdef XP_OS2 + HMODULE dlh; +#else + HINSTANCE dlh; +#endif +#endif + +#if defined(XP_MAC) || defined(XP_MACOSX) + CFragConnectionID connection; + +#if TARGET_CARBON + CFBundleRef bundle; +#endif + + Ptr main; + +#if defined(XP_MACOSX) + CFMutableDictionaryRef wrappers; + const struct mach_header* image; +#endif /* XP_MACOSX */ +#endif + +#ifdef XP_UNIX +#if defined(USE_HPSHL) + shl_t dlh; +#elif defined(USE_MACH_DYLD) + NSModule dlh; +#else + void* dlh; +#endif +#endif + +#ifdef XP_BEOS + void* dlh; + void* stub_dlh; +#endif +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ +}; + +static PRLibrary *pr_loadmap; +static PRLibrary *pr_exe_loadmap; +static PRMonitor *pr_linker_lock; +static char* _pr_currentLibPath = NULL; + +static PRLibrary *pr_LoadLibraryByPathname(const char *name, PRIntn flags); +#ifdef XP_MAC +static PRLibrary *pr_Mac_LoadNamedFragment(const FSSpec *fileSpec, + const char* fragmentName); +static PRLibrary *pr_Mac_LoadIndexedFragment(const FSSpec *fileSpec, + PRUint32 fragIndex); +#endif /* XP_MAC */ + +/************************************************************************/ + +#if !defined(USE_DLFCN) && !defined(HAVE_STRERROR) && !defined(VBOX_USE_MORE_IPRT_IN_NSPR) +static char* errStrBuf = NULL; +#define ERR_STR_BUF_LENGTH 20 +static char* errno_string(PRIntn oserr) +{ + if (errStrBuf == NULL) + errStrBuf = PR_MALLOC(ERR_STR_BUF_LENGTH); + PR_snprintf(errStrBuf, ERR_STR_BUF_LENGTH, "error %d", oserr); + return errStrBuf; +} +#endif + +static void DLLErrorInternal(PRIntn oserr) +/* +** This whole function, and most of the code in this file, are run +** with a big hairy lock wrapped around it. Not the best of situations, +** but will eventually come up with the right answer. +*/ +{ + const char *error = NULL; +#ifdef USE_DLFCN + error = dlerror(); /* $$$ That'll be wrong some of the time - AOF */ +#elif defined(HAVE_STRERROR) + error = strerror(oserr); /* this should be okay */ +#else + error = errno_string(oserr); +#endif + if (NULL != error) + PR_SetErrorText(strlen(error), error); +} /* DLLErrorInternal */ + +void _PR_InitLinker(void) +{ +#if (!defined(XP_MAC) && !defined(XP_BEOS)) || defined(VBOX_USE_MORE_IPRT_IN_NSPR) + PRLibrary *lm; +#endif +#ifdef XP_UNIX + void *h; +#endif + + if (!pr_linker_lock) { + pr_linker_lock = PR_NewNamedMonitor("linker-lock"); + } + PR_EnterMonitor(pr_linker_lock); + +#if defined(XP_PC) || defined(VBOX_USE_MORE_IPRT_IN_NSPR) + lm = PR_NEWZAP(PRLibrary); + lm->name = strdup("Executable"); +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR + lm->dlh = NIL_RTLDRMOD; +#else /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + /* + ** In WIN32, GetProcAddress(...) expects a module handle in order to + ** get exported symbols from the executable... + ** + ** However, in WIN16 this is accomplished by passing NULL to + ** GetProcAddress(...) + */ +#if defined(_WIN32) + lm->dlh = GetModuleHandle(NULL); +#else + lm->dlh = (HINSTANCE)NULL; +#endif /* ! _WIN32 */ +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + + lm->refCount = 1; + lm->staticTable = NULL; + pr_exe_loadmap = lm; + pr_loadmap = lm; + +#elif defined(XP_UNIX) +#ifdef HAVE_DLL +#ifdef USE_DLFCN + h = dlopen(0, RTLD_LAZY); + if (!h) { + char *error; + + DLLErrorInternal(_MD_ERRNO()); + error = (char*)PR_MALLOC(PR_GetErrorTextLength()); + (void) PR_GetErrorText(error); + fprintf(stderr, "failed to initialize shared libraries [%s]\n", + error); + PR_DELETE(error); + abort();/* XXX */ + } +#elif defined(USE_HPSHL) + h = NULL; + /* don't abort with this NULL */ +#elif defined(USE_MACH_DYLD) + h = NULL; /* XXXX toshok */ +#else +#error no dll strategy +#endif /* USE_DLFCN */ + + lm = PR_NEWZAP(PRLibrary); + if (lm) { + lm->name = strdup("a.out"); + lm->refCount = 1; + lm->dlh = h; + lm->staticTable = NULL; + } + pr_exe_loadmap = lm; + pr_loadmap = lm; +#endif /* HAVE_DLL */ +#endif /* XP_UNIX */ + +#if !defined(XP_MAC) && !defined(XP_BEOS) || defined(VBOX_USE_MORE_IPRT_IN_NSPR) + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Loaded library %s (init)", lm?lm->name:"NULL")); +#endif + + PR_ExitMonitor(pr_linker_lock); +} + +#if defined(WIN16) +/* + * _PR_ShutdownLinker unloads all dlls loaded by the application via + * calls to PR_LoadLibrary + */ +void _PR_ShutdownLinker(void) +{ + PR_EnterMonitor(pr_linker_lock); + + while (pr_loadmap) { + if (pr_loadmap->refCount > 1) { +#ifdef DEBUG + fprintf(stderr, "# Forcing library to unload: %s (%d outstanding references)\n", + pr_loadmap->name, pr_loadmap->refCount); +#endif + pr_loadmap->refCount = 1; + } + PR_UnloadLibrary(pr_loadmap); + } + + PR_ExitMonitor(pr_linker_lock); + + PR_DestroyMonitor(pr_linker_lock); + pr_linker_lock = NULL; +} +#else +/* + * _PR_ShutdownLinker was originally only used on WIN16 (see above), + * but I think it should also be used on other platforms. However, + * I disagree with the original implementation's unloading the dlls + * for the application. Any dlls that still remain on the pr_loadmap + * list when NSPR shuts down are application programming errors. The + * only exception is pr_exe_loadmap, which was added to the list by + * NSPR and hence should be cleaned up by NSPR. + */ +void _PR_ShutdownLinker(void) +{ + /* FIXME: pr_exe_loadmap should be destroyed. */ + + PR_DestroyMonitor(pr_linker_lock); + pr_linker_lock = NULL; + + if (_pr_currentLibPath) { +#ifdef VBOX_USE_IPRT_IN_NSPR + RTStrFree(_pr_currentLibPath); +#else + free(_pr_currentLibPath); +#endif + _pr_currentLibPath = NULL; + } + +#if !defined(USE_DLFCN) && !defined(HAVE_STRERROR) && !defined(VBOX_USE_MORE_IPRT_IN_NSPR) + PR_DELETE(errStrBuf); +#endif +} +#endif + +/******************************************************************************/ + +PR_IMPLEMENT(PRStatus) PR_SetLibraryPath(const char *path) +{ + PRStatus rv = PR_SUCCESS; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + PR_EnterMonitor(pr_linker_lock); + if (_pr_currentLibPath) { +#ifdef VBOX_USE_IPRT_IN_NSPR + RTStrFree(_pr_currentLibPath); +#else + free(_pr_currentLibPath); +#endif + } + if (path) { + _pr_currentLibPath = strdup(path); + if (!_pr_currentLibPath) { + PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); + rv = PR_FAILURE; + } + } else { + _pr_currentLibPath = 0; + } + PR_ExitMonitor(pr_linker_lock); + return rv; +} + +/* +** Return the library path for finding shared libraries. +*/ +PR_IMPLEMENT(char *) +PR_GetLibraryPath(void) +{ + char *ev; + char *copy = NULL; /* a copy of _pr_currentLibPath */ + + if (!_pr_initialized) _PR_ImplicitInitialization(); + PR_EnterMonitor(pr_linker_lock); + if (_pr_currentLibPath != NULL) { + goto exit; + } + + /* initialize pr_currentLibPath */ + +#ifdef XP_PC + ev = getenv("LD_LIBRARY_PATH"); + if (!ev) { + ev = ".;\\lib"; + } + ev = strdup(ev); +#endif + +#ifdef XP_MAC + { + char *p; + int len; + + ev = getenv("LD_LIBRARY_PATH"); + + if (!ev) + ev = ""; + + len = strlen(ev) + 1; /* +1 for the null */ +# ifdef VBOX_USE_IPRT_IN_NSPR + p = (char*) RTStrAlloc(len); +# else + p = (char*) malloc(len); +# endif + if (p) { + strcpy(p, ev); + } + ev = p; + } +#endif + +#if defined(XP_UNIX) || defined(XP_BEOS) +#if defined(USE_DLFCN) || defined(USE_MACH_DYLD) || defined(XP_BEOS) + { + char *p=NULL; + int len; + +#ifdef XP_BEOS + ev = getenv("LIBRARY_PATH"); + if (!ev) { + ev = "%A/lib:/boot/home/config/lib:/boot/beos/system/lib"; + } +#else +# if defined(VBOX) && defined(XP_MACOSX) + ev = getenv("DYLD_LIBRARY_PATH"); +# else + ev = getenv("LD_LIBRARY_PATH"); +# endif + if (!ev) { + ev = "/usr/lib:/lib"; + } +#endif + len = strlen(ev) + 1; /* +1 for the null */ + +# ifdef VBOX_USE_IPRT_IN_NSPR + p = (char*) RTStrAlloc(len); +# else + p = (char*) malloc(len); +# endif + if (p) { + strcpy(p, ev); + } /* if (p) */ + ev = p; + PR_LOG(_pr_io_lm, PR_LOG_NOTICE, ("linker path '%s'", ev)); + + } +#else + /* AFAIK there isn't a library path with the HP SHL interface --Rob */ + ev = strdup(""); +# endif +#endif + + /* + * If ev is NULL, we have run out of memory + */ + _pr_currentLibPath = ev; + + exit: + if (_pr_currentLibPath) { +#ifdef VBOX_USE_IPRT_IN_NSPR + copy = RTMemDup(_pr_currentLibPath, strlen(_pr_currentLibPath) + 1); +#else + copy = strdup(_pr_currentLibPath); +#endif + } + PR_ExitMonitor(pr_linker_lock); + if (!copy) { + PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0); + } + return copy; +} + +/* +** Build library name from path, lib and extensions +*/ +PR_IMPLEMENT(char*) +PR_GetLibraryName(const char *path, const char *lib) +{ + char *fullname; + +#ifdef XP_PC + if (strstr(lib, PR_DLL_SUFFIX) == NULL) + { + if (path) { + fullname = PR_smprintf("%s\\%s%s", path, lib, PR_DLL_SUFFIX); + } else { + fullname = PR_smprintf("%s%s", lib, PR_DLL_SUFFIX); + } + } else { + if (path) { + fullname = PR_smprintf("%s\\%s", path, lib); + } else { + fullname = PR_smprintf("%s", lib); + } + } +#endif /* XP_PC */ +#ifdef XP_MAC + if (path) { + fullname = PR_smprintf("%s%s", path, lib); + } else { + fullname = PR_smprintf("%s", lib); + } +#endif +#if defined(XP_UNIX) || defined(XP_BEOS) + if (strstr(lib, PR_DLL_SUFFIX) == NULL) + { + if (path) { + fullname = PR_smprintf("%s/lib%s%s", path, lib, PR_DLL_SUFFIX); + } else { + fullname = PR_smprintf("lib%s%s", lib, PR_DLL_SUFFIX); + } + } else { + if (path) { + fullname = PR_smprintf("%s/%s", path, lib); + } else { + fullname = PR_smprintf("%s", lib); + } + } +#endif /* XP_UNIX || XP_BEOS */ + return fullname; +} + +/* +** Free the memory allocated, for the caller, by PR_GetLibraryName +*/ +PR_IMPLEMENT(void) +PR_FreeLibraryName(char *mem) +{ + PR_smprintf_free(mem); +} + +static PRLibrary* +pr_UnlockedFindLibrary(const char *name) +{ + PRLibrary* lm = pr_loadmap; + const char* np = strrchr(name, PR_DIRECTORY_SEPARATOR); + np = np ? np + 1 : name; + while (lm) { + const char* cp = strrchr(lm->name, PR_DIRECTORY_SEPARATOR); + cp = cp ? cp + 1 : lm->name; +#ifdef WIN32 + /* Windows DLL names are case insensitive... */ + if (strcmpi(np, cp) == 0) +#elif defined(XP_OS2) + if (stricmp(np, cp) == 0) +#else + if (strcmp(np, cp) == 0) +#endif + { + /* found */ + lm->refCount++; + PR_LOG(_pr_linker_lm, PR_LOG_MIN, + ("%s incr => %d (find lib)", + lm->name, lm->refCount)); + return lm; + } + lm = lm->next; + } + return NULL; +} + +PR_IMPLEMENT(PRLibrary*) +PR_LoadLibraryWithFlags(PRLibSpec libSpec, PRIntn flags) +{ + if (flags == 0) { + flags = _PR_DEFAULT_LD_FLAGS; + } + switch (libSpec.type) { + case PR_LibSpec_Pathname: + return pr_LoadLibraryByPathname(libSpec.value.pathname, flags); +#ifdef XP_MAC + case PR_LibSpec_MacNamedFragment: + return pr_Mac_LoadNamedFragment( + libSpec.value.mac_named_fragment.fsspec, + libSpec.value.mac_named_fragment.name); + case PR_LibSpec_MacIndexedFragment: + return pr_Mac_LoadIndexedFragment( + libSpec.value.mac_indexed_fragment.fsspec, + libSpec.value.mac_indexed_fragment.index); +#endif /* XP_MAC */ + default: + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return NULL; + } +} + +PR_IMPLEMENT(PRLibrary*) +PR_LoadLibrary(const char *name) +{ + PRLibSpec libSpec; + + libSpec.type = PR_LibSpec_Pathname; + libSpec.value.pathname = name; + return PR_LoadLibraryWithFlags(libSpec, 0); +} + +#ifndef VBOX_USE_MORE_IPRT_IN_NSPR /* exclude big chunk */ +#if defined(USE_MACH_DYLD) +static NSModule +pr_LoadMachDyldModule(const char *name) +{ + NSObjectFileImage ofi; + NSModule h = NULL; + if (NSCreateObjectFileImageFromFile(name, &ofi) + == NSObjectFileImageSuccess) { + h = NSLinkModule(ofi, name, NSLINKMODULE_OPTION_PRIVATE + | NSLINKMODULE_OPTION_RETURN_ON_ERROR); + /* + * TODO: If NSLinkModule fails, use NSLinkEditError to retrieve + * error information. + */ + if (NSDestroyObjectFileImage(ofi) == FALSE) { + if (h) { + (void)NSUnLinkModule(h, NSUNLINKMODULE_OPTION_NONE); + h = NULL; + } + } + } + return h; +} +#endif + +#if defined(XP_MAC) || defined(XP_MACOSX) + +#ifdef XP_MACOSX +static void* TV2FP(CFMutableDictionaryRef dict, const char* name, void *tvp) +{ + static uint32 glue[6] = { 0x3D800000, 0x618C0000, 0x800C0000, 0x804C0004, 0x7C0903A6, 0x4E800420 }; + uint32* newGlue = NULL; + + if (tvp != NULL) { + CFStringRef nameRef = CFStringCreateWithCString(NULL, name, kCFStringEncodingASCII); + if (nameRef) { + CFMutableDataRef glueData = (CFMutableDataRef) CFDictionaryGetValue(dict, nameRef); + if (glueData == NULL) { + glueData = CFDataCreateMutable(NULL, sizeof(glue)); + if (glueData != NULL) { + newGlue = (uint32*) CFDataGetMutableBytePtr(glueData); + memcpy(newGlue, glue, sizeof(glue)); + newGlue[0] |= ((UInt32)tvp >> 16); + newGlue[1] |= ((UInt32)tvp & 0xFFFF); + MakeDataExecutable(newGlue, sizeof(glue)); + CFDictionaryAddValue(dict, nameRef, glueData); + CFRelease(glueData); + + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("TV2FP: created wrapper for CFM function %s().", name)); + } + } else { + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("TV2FP: found wrapper for CFM function %s().", name)); + + newGlue = (uint32*) CFDataGetMutableBytePtr(glueData); + } + CFRelease(nameRef); + } + } + + return newGlue; +} +#endif + +/* +** macLibraryLoadProc is a function definition for a Mac shared library +** loading method. The "name" param is the same full or partial pathname +** that was passed to pr_LoadLibraryByPathName. The function must fill +** in the fields of "lm" which apply to its library type. Returns +** PR_SUCCESS if successful. +*/ + +typedef PRStatus (*macLibraryLoadProc)(const char *name, PRLibrary *lm); + +static PRStatus +pr_LoadViaCFM(const char *name, PRLibrary *lm) +{ + OSErr err; + char cName[64]; + Str255 errName; + +#if !defined(XP_MACOSX) + Str255 pName; + /* + * Algorithm: The "name" passed in could be either a shared + * library name that we should look for in the normal library + * search paths, or a full path name to a specific library on + * disk. Since the full path will always contain a ":" + * (shortest possible path is "Volume:File"), and since a + * library name can not contain a ":", we can test for the + * presence of a ":" to see which type of library we should load. + * or its a full UNIX path which we for now assume is Java + * enumerating all the paths (see below) + */ + if (strchr(name, PR_PATH_SEPARATOR) == NULL) { + if (strchr(name, PR_DIRECTORY_SEPARATOR) == NULL) { + /* + * The name did not contain a ":", so it must be a + * library name. Convert the name to a Pascal string + * and try to find the library. + */ + } else { + /* + * name contained a "/" which means we need to suck off + * the last part of the path and pass that on the + * NSGetSharedLibrary. this may not be what we really + * want to do .. because Java could be iterating through + * the whole LD path, and we'll find it if it's anywhere + * on that path -- it appears that's what UNIX and the + * PC do too...so we'll emulate but it could be wrong. + */ + name = strrchr(name, PR_DIRECTORY_SEPARATOR) + 1; + } + + PStrFromCStr(name, pName); + + /* + * beard: NSGetSharedLibrary was so broken that I just decided to + * use GetSharedLibrary for now. This will need to change for + * plugins, but those should go in the Extensions folder anyhow. + */ + err = GetSharedLibrary(pName, kCompiledCFragArch, kReferenceCFrag, + &lm->connection, &lm->main, errName); + if (err != noErr) + return PR_FAILURE; + } + else +#endif + { + /* + * The name did contain a ":", so it must be a full path name. + * Now we have to do a lot of work to convert the path name to + * an FSSpec (silly, since we were probably just called from the + * MacFE plug-in code that already knew the FSSpec and converted + * it to a full path just to pass to us). Make an FSSpec from + * the full path and call GetDiskFragment. + */ + FSSpec fileSpec; + Boolean tempUnusedBool; + +#if defined(XP_MACOSX) + { + /* Use direct conversion of POSIX path to FSRef to FSSpec. */ + FSRef ref; + err = FSPathMakeRef((const UInt8*)name, &ref, NULL); + if (err == noErr) + err = FSGetCatalogInfo(&ref, kFSCatInfoNone, NULL, NULL, + &fileSpec, NULL); + } +#else + PStrFromCStr(name, pName); + err = FSMakeFSSpec(0, 0, pName, &fileSpec); +#endif + if (err != noErr) + return PR_FAILURE; + + /* Resolve an alias if this was one */ + err = ResolveAliasFile(&fileSpec, true, &tempUnusedBool, + &tempUnusedBool); + if (err != noErr) + return PR_FAILURE; + + /* Finally, try to load the library */ + err = GetDiskFragment(&fileSpec, 0, kCFragGoesToEOF, fileSpec.name, + kLoadCFrag, &lm->connection, &lm->main, errName); + +#if TARGET_CARBON + p2cstrcpy(cName, fileSpec.name); +#else + memcpy(cName, fileSpec.name + 1, fileSpec.name[0]); + cName[fileSpec.name[0]] = '\0'; +#endif + +#ifdef XP_MACOSX + if (err == noErr && lm->connection) { + /* + * if we're a mach-o binary, need to wrap all CFM function + * pointers. need a hash-table of already seen function + * pointers, etc. + */ + lm->wrappers = CFDictionaryCreateMutable(NULL, 16, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks); + if (lm->wrappers) { + lm->main = TV2FP(lm->wrappers, "main", lm->main); + } else + err = memFullErr; + } +#endif + } + return (err == noErr) ? PR_SUCCESS : PR_FAILURE; +} + +/* +** Creates a CFBundleRef if the pathname refers to a Mac OS X bundle +** directory. The caller is responsible for calling CFRelease() to +** deallocate. +*/ + +#if TARGET_CARBON +static PRStatus +pr_LoadCFBundle(const char *name, PRLibrary *lm) +{ + CFURLRef bundleURL; + CFBundleRef bundle = NULL; + +#ifdef XP_MACOSX + char pathBuf[PATH_MAX]; + const char *resolvedPath; + CFStringRef pathRef; + + /* Takes care of relative paths and symlinks */ + resolvedPath = realpath(name, pathBuf); + if (!resolvedPath) + return PR_FAILURE; + + pathRef = CFStringCreateWithCString(NULL, pathBuf, kCFStringEncodingUTF8); + if (pathRef) { + bundleURL = CFURLCreateWithFileSystemPath(NULL, pathRef, + kCFURLPOSIXPathStyle, true); + if (bundleURL) { + bundle = CFBundleCreate(NULL, bundleURL); + CFRelease(bundleURL); + } + CFRelease(pathRef); + } +#else + OSErr err; + Str255 pName; + FSSpec fsSpec; + FSRef fsRef; + + if ((UInt32)(CFURLCreateFromFSRef) == kUnresolvedCFragSymbolAddress) + return PR_FAILURE; + PStrFromCStr(name, pName); + err = FSMakeFSSpec(0, 0, pName, &fsSpec); + if (err != noErr) + return PR_FAILURE; + err = FSpMakeFSRef(&fsSpec, &fsRef); + if (err != noErr) + return PR_FAILURE; + bundleURL = CFURLCreateFromFSRef(NULL, &fsRef); + if (bundleURL) { + bundle = CFBundleCreate(NULL, bundleURL); + CFRelease(bundleURL); + } +#endif + + lm->bundle = bundle; + return (bundle != NULL) ? PR_SUCCESS : PR_FAILURE; +} +#endif + +#ifdef XP_MACOSX +static PRStatus +pr_LoadViaDyld(const char *name, PRLibrary *lm) +{ + lm->dlh = pr_LoadMachDyldModule(name); + if (lm->dlh == NULL) { + lm->image = NSAddImage(name, NSADDIMAGE_OPTION_RETURN_ON_ERROR + | NSADDIMAGE_OPTION_WITH_SEARCHING); + /* + * TODO: If NSAddImage fails, use NSLinkEditError to retrieve + * error information. + */ + } + return (lm->dlh != NULL || lm->image != NULL) ? PR_SUCCESS : PR_FAILURE; +} +#endif + +#endif /* defined(XP_MAC) || defined(XP_MACOSX) */ +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + +/* +** Dynamically load a library. Only load libraries once, so scan the load +** map first. +*/ +static PRLibrary* +pr_LoadLibraryByPathname(const char *name, PRIntn flags) +{ + PRLibrary *lm; + PRLibrary* result; + PRInt32 oserr; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + + /* See if library is already loaded */ + PR_EnterMonitor(pr_linker_lock); + + result = pr_UnlockedFindLibrary(name); + if (result != NULL) goto unlock; + + lm = PR_NEWZAP(PRLibrary); + if (lm == NULL) { + oserr = _MD_ERRNO(); + goto unlock; + } + lm->staticTable = NULL; + +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR + oserr = RTLdrLoad(name, &lm->dlh); + if (RT_FAILURE(oserr)) + goto unlock; + lm->name = strdup(name); + lm->refCount = 1; + lm->next = pr_loadmap; + pr_loadmap = lm; + +#else /* !VBOX_USE_MORE_IPRT_IN_NSPR */ +#ifdef XP_OS2 /* Why isn't all this stuff in MD code?! */ + { + HMODULE h; + UCHAR pszError[_MAX_PATH]; + ULONG ulRc = NO_ERROR; + + ulRc = DosLoadModule(pszError, _MAX_PATH, (PSZ) name, &h); + if (ulRc != NO_ERROR) { + oserr = ulRc; + PR_DELETE(lm); + goto unlock; + } + lm->name = strdup(name); + lm->dlh = h; + lm->next = pr_loadmap; + pr_loadmap = lm; + } +#endif /* XP_OS2 */ + +#if defined(WIN32) || defined(WIN16) + { + HINSTANCE h; + NODL_PROC *pfn; + + h = LoadLibrary(name); + if (h < (HINSTANCE)HINSTANCE_ERROR) { + oserr = _MD_ERRNO(); + PR_DELETE(lm); + goto unlock; + } + lm->name = strdup(name); + lm->dlh = h; + lm->next = pr_loadmap; + pr_loadmap = lm; + + /* + ** Try to load a table of "static functions" provided by the DLL + */ + + pfn = (NODL_PROC *)GetProcAddress(h, "NODL_TABLE"); + if (pfn != NULL) { + lm->staticTable = (*pfn)(); + } + } +#endif /* WIN32 || WIN16 */ + +#if defined(XP_MAC) || defined(XP_MACOSX) + { + int i; + PRStatus status; + + static const macLibraryLoadProc loadProcs[] = { +#if defined(XP_MACOSX) + pr_LoadViaDyld, pr_LoadCFBundle, pr_LoadViaCFM +#elif TARGET_CARBON + pr_LoadViaCFM, pr_LoadCFBundle +#else + pr_LoadViaCFM +#endif + }; + + for (i = 0; i < sizeof(loadProcs) / sizeof(loadProcs[0]); i++) { + if ((status = loadProcs[i](name, lm)) == PR_SUCCESS) + break; + } + if (status != PR_SUCCESS) { + oserr = cfragNoLibraryErr; + PR_DELETE(lm); + goto unlock; + } + lm->name = strdup(name); + lm->next = pr_loadmap; + pr_loadmap = lm; + } +#endif + +#if defined(XP_UNIX) && !defined(XP_MACOSX) +#ifdef HAVE_DLL + { +#if defined(USE_DLFCN) +#ifdef NTO + /* Neutrino needs RTLD_GROUP to load Netscape plugins. (bug 71179) */ + int dl_flags = RTLD_GROUP; +#elif defined(AIX) + /* AIX needs RTLD_MEMBER to load an archive member. (bug 228899) */ + int dl_flags = RTLD_MEMBER; +#else + int dl_flags = 0; +#endif + void *h; + + if (flags & PR_LD_LAZY) { + dl_flags |= RTLD_LAZY; + } + if (flags & PR_LD_NOW) { + dl_flags |= RTLD_NOW; + } + if (flags & PR_LD_GLOBAL) { + dl_flags |= RTLD_GLOBAL; + } + if (flags & PR_LD_LOCAL) { + dl_flags |= RTLD_LOCAL; + } + h = dlopen(name, dl_flags); +#elif defined(USE_HPSHL) + int shl_flags = 0; + shl_t h; + + /* + * Use the DYNAMIC_PATH flag only if 'name' is a plain file + * name (containing no directory) to match the behavior of + * dlopen(). + */ + if (strchr(name, PR_DIRECTORY_SEPARATOR) == NULL) { + shl_flags |= DYNAMIC_PATH; + } + if (flags & PR_LD_LAZY) { + shl_flags |= BIND_DEFERRED; + } + if (flags & PR_LD_NOW) { + shl_flags |= BIND_IMMEDIATE; + } + /* No equivalent of PR_LD_GLOBAL and PR_LD_LOCAL. */ + h = shl_load(name, shl_flags, 0L); +#elif defined(USE_MACH_DYLD) + NSModule h = pr_LoadMachDyldModule(name); +#else +#error Configuration error +#endif + if (!h) { + oserr = _MD_ERRNO(); +#ifdef DEBUG + fprintf(stderr, "pr_LoadLibraryByPathname(): Failed to load '%s'\n", name); +#endif + PR_DELETE(lm); + goto unlock; + } + lm->name = strdup(name); + lm->dlh = h; + lm->next = pr_loadmap; + pr_loadmap = lm; + } +#endif /* HAVE_DLL */ +#endif /* XP_UNIX */ + + lm->refCount = 1; + +#ifdef XP_BEOS + { + image_info info; + int32 cookie = 0; + image_id imageid = B_ERROR; + image_id stubid = B_ERROR; + PRLibrary *p; + + for (p = pr_loadmap; p != NULL; p = p->next) { + /* hopefully, our caller will always use the same string + to refer to the same library */ + if (strcmp(name, p->name) == 0) { + /* we've already loaded this library */ + imageid = info.id; + lm->refCount++; + break; + } + } + + if(imageid == B_ERROR) { + /* it appears the library isn't yet loaded - load it now */ + char stubName [B_PATH_NAME_LENGTH + 1]; + + /* the following is a work-around to a "bug" in the beos - + the beos system loader allows only 32M (system-wide) + to be used by code loaded as "add-ons" (code loaded + through the 'load_add_on()' system call, which includes + mozilla components), but allows 256M to be used by + shared libraries. + + unfortunately, mozilla is too large to fit into the + "add-on" space, so we must trick the loader into + loading some of the components as shared libraries. this + is accomplished by creating a "stub" add-on (an empty + shared object), and linking it with the component + (the actual .so file generated by the build process, + without any modifications). when this stub is loaded + by load_add_on(), the loader will automatically load the + component into the shared library space. + */ + + strcpy(stubName, name); + strcat(stubName, ".stub"); + + /* first, attempt to load the stub (thereby loading the + component as a shared library */ + if ((stubid = load_add_on(stubName)) > B_ERROR) { + /* the stub was loaded successfully. */ + imageid = B_FILE_NOT_FOUND; + + cookie = 0; + while (get_next_image_info(0, &cookie, &info) == B_OK) { + const char *endOfSystemName = strrchr(info.name, '/'); + const char *endOfPassedName = strrchr(name, '/'); + if( 0 == endOfSystemName ) + endOfSystemName = info.name; + else + endOfSystemName++; + if( 0 == endOfPassedName ) + endOfPassedName = name; + else + endOfPassedName++; + if (strcmp(endOfSystemName, endOfPassedName) == 0) { + /* this is the actual component - remember it */ + imageid = info.id; + break; + } + } + + } else { + /* we failed to load the "stub" - try to load the + component directly as an add-on */ + stubid = B_ERROR; + imageid = load_add_on(name); + } + } + + if (imageid <= B_ERROR) { + oserr = imageid; + PR_DELETE( lm ); + goto unlock; + } + lm->name = strdup(name); + lm->dlh = (void*)imageid; + lm->stub_dlh = (void*)stubid; + lm->next = pr_loadmap; + pr_loadmap = lm; + } +#endif +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + + result = lm; /* success */ + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Loaded library %s (load lib)", lm->name)); + + unlock: + if (result == NULL) { + PR_SetError(PR_LOAD_LIBRARY_ERROR, oserr); + DLLErrorInternal(oserr); /* sets error text */ + } + PR_ExitMonitor(pr_linker_lock); + return result; +} + +PR_IMPLEMENT(PRLibrary*) +PR_FindLibrary(const char *name) +{ + PRLibrary* result; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + PR_EnterMonitor(pr_linker_lock); + result = pr_UnlockedFindLibrary(name); + PR_ExitMonitor(pr_linker_lock); + return result; +} + + +#ifdef XP_MAC + +static PRLibrary* +pr_Mac_LoadNamedFragment(const FSSpec *fileSpec, const char* fragmentName) +{ + PRLibrary* newLib = NULL; + PRLibrary* result; + FSSpec resolvedSpec = *fileSpec; + CFragConnectionID connectionID = 0; + Boolean isFolder, wasAlias; + OSErr err = noErr; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + + /* See if library is already loaded */ + PR_EnterMonitor(pr_linker_lock); + + result = pr_UnlockedFindLibrary(fragmentName); + if (result != NULL) goto unlock; + + newLib = PR_NEWZAP(PRLibrary); + if (newLib == NULL) goto unlock; + newLib->staticTable = NULL; + + + /* Resolve an alias if this was one */ + err = ResolveAliasFile(&resolvedSpec, true, &isFolder, &wasAlias); + if (err != noErr) + goto unlock; + + if (isFolder) + { + err = fnfErr; + goto unlock; + } + + /* Finally, try to load the library */ + err = NSLoadNamedFragment(&resolvedSpec, fragmentName, &connectionID); + if (err != noErr) + goto unlock; + + newLib->name = strdup(fragmentName); + newLib->connection = connectionID; + newLib->next = pr_loadmap; + pr_loadmap = newLib; + + result = newLib; /* success */ + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Loaded library %s (load lib)", newLib->name)); + +unlock: + if (result == NULL) { + if (newLib != NULL) + PR_DELETE(newLib); + PR_SetError(PR_LOAD_LIBRARY_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); /* sets error text */ + } + PR_ExitMonitor(pr_linker_lock); + return result; +} + + +static PRLibrary* +pr_Mac_LoadIndexedFragment(const FSSpec *fileSpec, PRUint32 fragIndex) +{ + PRLibrary* newLib = NULL; + PRLibrary* result; + FSSpec resolvedSpec = *fileSpec; + char* fragmentName = NULL; + UInt32 fragOffset, fragLength; + CFragConnectionID connectionID = 0; + Boolean isFolder, wasAlias; + OSErr err = noErr; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + + /* See if library is already loaded */ + PR_EnterMonitor(pr_linker_lock); + + /* Resolve an alias if this was one */ + err = ResolveAliasFile(&resolvedSpec, true, &isFolder, &wasAlias); + if (err != noErr) + goto unlock; + + if (isFolder) + { + err = fnfErr; + goto unlock; + } + err = GetIndexedFragmentOffsets(&resolvedSpec, fragIndex, &fragOffset, &fragLength, &fragmentName); + if (err != noErr) goto unlock; + + result = pr_UnlockedFindLibrary(fragmentName); + free(fragmentName); + fragmentName = NULL; + if (result != NULL) goto unlock; + + newLib = PR_NEWZAP(PRLibrary); + if (newLib == NULL) goto unlock; + newLib->staticTable = NULL; + + /* Finally, try to load the library */ + err = NSLoadIndexedFragment(&resolvedSpec, fragIndex, &fragmentName, &connectionID); + if (err != noErr) { + PR_DELETE(newLib); + goto unlock; + } + + newLib->name = fragmentName; /* was malloced in NSLoadIndexedFragment */ + newLib->connection = connectionID; + newLib->next = pr_loadmap; + pr_loadmap = newLib; + + result = newLib; /* success */ + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Loaded library %s (load lib)", newLib->name)); + +unlock: + if (result == NULL) { + if (newLib != NULL) + PR_DELETE(newLib); + PR_SetError(PR_LOAD_LIBRARY_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); /* sets error text */ + } + PR_ExitMonitor(pr_linker_lock); + return result; +} + + +#endif + +/* +** Unload a shared library which was loaded via PR_LoadLibrary +*/ +PR_IMPLEMENT(PRStatus) +PR_UnloadLibrary(PRLibrary *lib) +{ + int result = 0; + PRStatus status = PR_SUCCESS; + + if ((lib == 0) || (lib->refCount <= 0)) { + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + return PR_FAILURE; + } + + PR_EnterMonitor(pr_linker_lock); + if (--lib->refCount > 0) { + PR_LOG(_pr_linker_lm, PR_LOG_MIN, + ("%s decr => %d", + lib->name, lib->refCount)); + goto done; + } + +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR + result = RTLdrClose(lib->dlh); + lib->dlh = NIL_RTLDRMOD; + +#else /* !VBOX_USE_MORE_IPRT_IN_NSPR */ +#ifdef XP_BEOS + if(((image_id)lib->stub_dlh) == B_ERROR) + unload_add_on( (image_id) lib->dlh ); + else + unload_add_on( (image_id) lib->stub_dlh); +#endif + +#ifdef XP_UNIX +#ifdef HAVE_DLL +#ifdef USE_DLFCN + result = dlclose(lib->dlh); +#elif defined(USE_HPSHL) + result = shl_unload(lib->dlh); +#elif defined(USE_MACH_DYLD) + result = NSUnLinkModule(lib->dlh, NSUNLINKMODULE_OPTION_NONE) ? 0 : -1; +#else +#error Configuration error +#endif +#endif /* HAVE_DLL */ +#endif /* XP_UNIX */ +#ifdef XP_PC + if (lib->dlh) { + FreeLibrary((HINSTANCE)(lib->dlh)); + lib->dlh = (HINSTANCE)NULL; + } +#endif /* XP_PC */ + +#if defined(XP_MAC) || defined(XP_MACOSX) + /* Close the connection */ + if (lib->connection) + CloseConnection(&(lib->connection)); +#if TARGET_CARBON + if (lib->bundle) + CFRelease(lib->bundle); +#endif +#if defined(XP_MACOSX) + if (lib->wrappers) + CFRelease(lib->wrappers); + /* No way to unload an image (lib->image) */ +#endif +#endif +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + + /* unlink from library search list */ + if (pr_loadmap == lib) + pr_loadmap = pr_loadmap->next; + else if (pr_loadmap != NULL) { + PRLibrary* prev = pr_loadmap; + PRLibrary* next = pr_loadmap->next; + while (next != NULL) { + if (next == lib) { + prev->next = next->next; + goto freeLib; + } + prev = next; + next = next->next; + } + /* + * fail (the library is not on the _pr_loadmap list), + * but don't wipe out an error from dlclose/shl_unload. + */ + PR_ASSERT(!"_pr_loadmap and lib->refCount inconsistent"); + if (result == 0) { + PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0); + status = PR_FAILURE; + } + } + /* + * We free the PRLibrary structure whether dlclose/shl_unload + * succeeds or not. + */ + + freeLib: + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Unloaded library %s", lib->name)); +#ifdef VBOX_USE_IPRT_IN_NSPR + RTStrFree(lib->name); +#else + free(lib->name); +#endif + lib->name = NULL; + PR_DELETE(lib); + if (result != 0) { + PR_SetError(PR_UNLOAD_LIBRARY_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + status = PR_FAILURE; + } + +done: + PR_ExitMonitor(pr_linker_lock); + return status; +} + +static void* +pr_FindSymbolInLib(PRLibrary *lm, const char *name) +{ + void *f = NULL; +#ifdef XP_OS2 + int rc; +#endif + + if (lm->staticTable != NULL) { + const PRStaticLinkTable* tp; + for (tp = lm->staticTable; tp->name; tp++) { + if (strcmp(name, tp->name) == 0) { + return (void*) tp->fp; + } + } + /* + ** If the symbol was not found in the static table then check if + ** the symbol was exported in the DLL... Win16 only!! + */ +#if !defined(WIN16) && !defined(XP_BEOS) + PR_SetError(PR_FIND_SYMBOL_ERROR, 0); + return (void*)NULL; +#endif + } + +#ifdef VBOX_USE_MORE_IPRT_IN_NSPR + if (RT_FAILURE(RTLdrGetSymbol(lm->dlh, name, &f))) + f = NULL; + +#else /* !VBOX_USE_MORE_IPRT_IN_NSPR */ +#ifdef XP_OS2 + rc = DosQueryProcAddr(lm->dlh, 0, (PSZ) name, (PFN *) &f); +#if defined(NEED_LEADING_UNDERSCORE) + /* + * Older plugins (not built using GCC) will have symbols that are not + * underscore prefixed. We check for that here. + */ + if (rc != NO_ERROR) { + name++; + DosQueryProcAddr(lm->dlh, 0, (PSZ) name, (PFN *) &f); + } +#endif +#endif /* XP_OS2 */ + +#if defined(WIN32) || defined(WIN16) + f = GetProcAddress(lm->dlh, name); +#endif /* WIN32 || WIN16 */ + +#if defined(XP_MAC) || defined(XP_MACOSX) +#if defined(NEED_LEADING_UNDERSCORE) +#define SYM_OFFSET 1 +#else +#define SYM_OFFSET 0 +#endif +#if TARGET_CARBON + if (lm->bundle) { + CFStringRef nameRef = CFStringCreateWithCString(NULL, name + SYM_OFFSET, kCFStringEncodingASCII); + if (nameRef) { + f = CFBundleGetFunctionPointerForName(lm->bundle, nameRef); + CFRelease(nameRef); + } + } +#endif + if (lm->connection) { + Ptr symAddr; + CFragSymbolClass symClass; + Str255 pName; + + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Looking up symbol: %s", name + SYM_OFFSET)); + + PStrFromCStr(name + SYM_OFFSET, pName); + +#if defined(XP_MACOSX) + f = (FindSymbol(lm->connection, pName, &symAddr, &symClass) == noErr) ? symAddr : NULL; +#else + f = (NSFindSymbol(lm->connection, pName, &symAddr, &symClass) == noErr) ? symAddr : NULL; +#endif + +#if defined(XP_MACOSX) + /* callers expect mach-o function pointers, so must wrap tvectors with glue. */ + if (f && symClass == kTVectorCFragSymbol) { + f = TV2FP(lm->wrappers, name + SYM_OFFSET, f); + } +#endif + + if (f == NULL && strcmp(name + SYM_OFFSET, "main") == 0) f = lm->main; + } +#if defined(XP_MACOSX) + if (lm->image) { + NSSymbol symbol; + symbol = NSLookupSymbolInImage(lm->image, name, + NSLOOKUPSYMBOLINIMAGE_OPTION_BIND + | NSLOOKUPSYMBOLINIMAGE_OPTION_RETURN_ON_ERROR); + if (symbol != NULL) + f = NSAddressOfSymbol(symbol); + else + f = NULL; + } +#endif +#undef SYM_OFFSET +#endif /* XP_MAC */ + +#ifdef XP_BEOS + if( B_NO_ERROR != get_image_symbol( (image_id)lm->dlh, name, B_SYMBOL_TYPE_TEXT, &f ) ) { + f = NULL; + } +#endif + +#ifdef XP_UNIX +#ifdef HAVE_DLL +#ifdef USE_DLFCN + f = dlsym(lm->dlh, name); +#elif defined(USE_HPSHL) + if (shl_findsym(&lm->dlh, name, TYPE_PROCEDURE, &f) == -1) { + f = NULL; + } +#elif defined(USE_MACH_DYLD) + if (lm->dlh) { + NSSymbol symbol; + symbol = NSLookupSymbolInModule(lm->dlh, name); + if (symbol != NULL) + f = NSAddressOfSymbol(symbol); + else + f = NULL; + } +#endif +#endif /* HAVE_DLL */ +#endif /* XP_UNIX */ +#endif /* !VBOX_USE_MORE_IPRT_IN_NSPR */ + if (f == NULL) { + PR_SetError(PR_FIND_SYMBOL_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + } + return f; +} + +/* +** Called by class loader to resolve missing native's +*/ +PR_IMPLEMENT(void*) +PR_FindSymbol(PRLibrary *lib, const char *raw_name) +{ + void *f = NULL; +#if defined(NEED_LEADING_UNDERSCORE) + char *name; +#else + const char *name; +#endif + /* + ** Mangle the raw symbol name in any way that is platform specific. + */ +#if defined(NEED_LEADING_UNDERSCORE) + /* Need a leading _ */ + name = PR_smprintf("_%s", raw_name); +#elif defined(AIX) + /* + ** AIX with the normal linker put's a "." in front of the symbol + ** name. When use "svcc" and "svld" then the "." disappears. Go + ** figure. + */ + name = raw_name; +#else + name = raw_name; +#endif + + PR_EnterMonitor(pr_linker_lock); + PR_ASSERT(lib != NULL); + f = pr_FindSymbolInLib(lib, name); + +#if defined(NEED_LEADING_UNDERSCORE) + PR_smprintf_free(name); +#endif + + PR_ExitMonitor(pr_linker_lock); + return f; +} + +/* +** Return the address of the function 'raw_name' in the library 'lib' +*/ +PR_IMPLEMENT(PRFuncPtr) +PR_FindFunctionSymbol(PRLibrary *lib, const char *raw_name) +{ + return ((PRFuncPtr) PR_FindSymbol(lib, raw_name)); +} + +PR_IMPLEMENT(void*) +PR_FindSymbolAndLibrary(const char *raw_name, PRLibrary* *lib) +{ + void *f = NULL; +#if defined(NEED_LEADING_UNDERSCORE) + char *name; +#else + const char *name; +#endif + PRLibrary* lm; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + /* + ** Mangle the raw symbol name in any way that is platform specific. + */ +#if defined(NEED_LEADING_UNDERSCORE) + /* Need a leading _ */ + name = PR_smprintf("_%s", raw_name); +#elif defined(AIX) + /* + ** AIX with the normal linker put's a "." in front of the symbol + ** name. When use "svcc" and "svld" then the "." disappears. Go + ** figure. + */ + name = raw_name; +#else + name = raw_name; +#endif + + PR_EnterMonitor(pr_linker_lock); + + /* search all libraries */ + for (lm = pr_loadmap; lm != NULL; lm = lm->next) { + f = pr_FindSymbolInLib(lm, name); + if (f != NULL) { + *lib = lm; + lm->refCount++; + PR_LOG(_pr_linker_lm, PR_LOG_MIN, + ("%s incr => %d (for %s)", + lm->name, lm->refCount, name)); + break; + } + } +#if defined(NEED_LEADING_UNDERSCORE) + PR_smprintf_free(name); +#endif + + PR_ExitMonitor(pr_linker_lock); + return f; +} + +PR_IMPLEMENT(PRFuncPtr) +PR_FindFunctionSymbolAndLibrary(const char *raw_name, PRLibrary* *lib) +{ + return ((PRFuncPtr) PR_FindSymbolAndLibrary(raw_name, lib)); +} + +/* +** Add a static library to the list of loaded libraries. If LoadLibrary +** is called with the name then we will pretend it was already loaded +*/ +PR_IMPLEMENT(PRLibrary*) +PR_LoadStaticLibrary(const char *name, const PRStaticLinkTable *slt) +{ + PRLibrary *lm=NULL; + PRLibrary* result = NULL; + + if (!_pr_initialized) _PR_ImplicitInitialization(); + + /* See if library is already loaded */ + PR_EnterMonitor(pr_linker_lock); + + /* If the lbrary is already loaded, then add the static table information... */ + result = pr_UnlockedFindLibrary(name); + if (result != NULL) { + PR_ASSERT( (result->staticTable == NULL) || (result->staticTable == slt) ); + result->staticTable = slt; + goto unlock; + } + + /* Add library to list...Mark it static */ + lm = PR_NEWZAP(PRLibrary); + if (lm == NULL) goto unlock; + + lm->name = strdup(name); + lm->refCount = 1; +#if defined(XP_MAC) && !defined(VBOX_USE_MORE_IPRT_IN_NSPR) + lm->connection = pr_exe_loadmap ? pr_exe_loadmap->connection : 0; +#else + lm->dlh = pr_exe_loadmap ? pr_exe_loadmap->dlh : 0; +#endif + lm->staticTable = slt; + lm->next = pr_loadmap; + pr_loadmap = lm; + + result = lm; /* success */ + PR_ASSERT(lm->refCount == 1); + unlock: + PR_LOG(_pr_linker_lm, PR_LOG_MIN, ("Loaded library %s (static lib)", lm->name)); + PR_ExitMonitor(pr_linker_lock); + return result; +} + +PR_IMPLEMENT(char *) +PR_GetLibraryFilePathname(const char *name, PRFuncPtr addr) +{ +#if defined(SOLARIS) || defined(LINUX) || defined(FREEBSD) + Dl_info dli; + char *result; + + if (dladdr((void *)addr, &dli) == 0) { + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + return NULL; + } + result = PR_Malloc(strlen(dli.dli_fname)+1); + if (result != NULL) { + strcpy(result, dli.dli_fname); + } + return result; +#elif defined(USE_MACH_DYLD) + char *result; + char const *image_name; + int i, count = _dyld_image_count(); + + for (i = 0; i < count; i++) { + image_name = _dyld_get_image_name(i); + if (strstr(image_name, name) != NULL) { + result = PR_Malloc(strlen(image_name)+1); + if (result != NULL) { + strcpy(result, image_name); + } + return result; + } + } + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, 0); + return NULL; +#elif defined(AIX) + char *result; +#define LD_INFO_INCREMENT 64 + struct ld_info *info; + unsigned int info_length = LD_INFO_INCREMENT * sizeof(struct ld_info); + struct ld_info *infop; + + for (;;) { + info = PR_Malloc(info_length); + if (info == NULL) { + return NULL; + } + /* If buffer is too small, loadquery fails with ENOMEM. */ + if (loadquery(L_GETINFO, info, info_length) != -1) { + break; + } + PR_Free(info); + if (errno != ENOMEM) { + /* should not happen */ + _PR_MD_MAP_DEFAULT_ERROR(_MD_ERRNO()); + return NULL; + } + /* retry with a larger buffer */ + info_length += LD_INFO_INCREMENT * sizeof(struct ld_info); + } + + for (infop = info; + ; + infop = (struct ld_info *)((char *)infop + infop->ldinfo_next)) { + if (strstr(infop->ldinfo_filename, name) != NULL) { + result = PR_Malloc(strlen(infop->ldinfo_filename)+1); + if (result != NULL) { + strcpy(result, infop->ldinfo_filename); + } + break; + } + if (!infop->ldinfo_next) { + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, 0); + result = NULL; + break; + } + } + PR_Free(info); + return result; +#elif defined(OSF1) + /* Contributed by Steve Streeter of HP */ + ldr_process_t process, ldr_my_process(); + ldr_module_t mod_id; + ldr_module_info_t info; + ldr_region_t regno; + ldr_region_info_t reginfo; + size_t retsize; + int rv; + char *result; + + /* Get process for which dynamic modules will be listed */ + + process = ldr_my_process(); + + /* Attach to process */ + + rv = ldr_xattach(process); + if (rv) { + /* should not happen */ + _PR_MD_MAP_DEFAULT_ERROR(_MD_ERRNO()); + return NULL; + } + + /* Print information for list of modules */ + + mod_id = LDR_NULL_MODULE; + + for (;;) { + + /* Get information for the next module in the module list. */ + + ldr_next_module(process, &mod_id); + if (ldr_inq_module(process, mod_id, &info, sizeof(info), + &retsize) != 0) { + /* No more modules */ + break; + } + if (retsize < sizeof(info)) { + continue; + } + + /* + * Get information for each region in the module and check if any + * contain the address of this function. + */ + + for (regno = 0; ; regno++) { + if (ldr_inq_region(process, mod_id, regno, ®info, + sizeof(reginfo), &retsize) != 0) { + /* No more regions */ + break; + } + if (((unsigned long)reginfo.lri_mapaddr <= + (unsigned long)addr) && + (((unsigned long)reginfo.lri_mapaddr + reginfo.lri_size) > + (unsigned long)addr)) { + /* Found it. */ + result = PR_Malloc(strlen(info.lmi_name)+1); + if (result != NULL) { + strcpy(result, info.lmi_name); + } + return result; + } + } + } + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, 0); + return NULL; +#elif defined(VMS) + /* Contributed by Colin Blake of HP */ + struct _imcb *icb; + ulong_t status; + char device_name[MAX_DEVNAM]; + int device_name_len; + $DESCRIPTOR (device_name_desc, device_name); + struct fibdef fib; + struct dsc$descriptor_s fib_desc = + { sizeof(struct fibdef), DSC$K_DTYPE_Z, DSC$K_CLASS_S, (char *)&fib } ; + IOSB iosb; + ITMLST devlst[2] = { + {MAX_DEVNAM, DVI$_ALLDEVNAM, device_name, &device_name_len}, + {0,0,0,0}}; + short file_name_len; + char file_name[MAX_FILNAM+1]; + char *result = NULL; + struct dsc$descriptor_s file_name_desc = + { MAX_FILNAM, DSC$K_DTYPE_T, DSC$K_CLASS_S, (char *) &file_name[0] } ; + + /* + ** The address for the process image list could change in future versions + ** of the operating system. 7FFD0688 is valid for V7.2 and V7.3 releases, + ** so we use that for the default, but allow an environment variable + ** (logical name) to override. + */ + if (IAC$GL_IMAGE_LIST == NULL) { + char *p = getenv("MOZILLA_IAC_GL_IMAGE_LIST"); + if (p) + IAC$GL_IMAGE_LIST = (struct _imcb *) strtol(p,NULL,0); + else + IAC$GL_IMAGE_LIST = (struct _imcb *) 0x7FFD0688; + } + + for (icb = IAC$GL_IMAGE_LIST->imcb$l_flink; + icb != IAC$GL_IMAGE_LIST; + icb = icb->imcb$l_flink) { + if (((void *)addr >= icb->imcb$l_starting_address) && + ((void *)addr <= icb->imcb$l_end_address)) { + /* + ** This is the correct image. + ** Get the device name. + */ + status = sys$getdviw(0,icb->imcb$w_chan,0,&devlst,0,0,0,0); + if ($VMS_STATUS_SUCCESS(status)) + device_name_desc.dsc$w_length = device_name_len; + + /* + ** Get the FID. + */ + memset(&fib,0,sizeof(struct fibdef)); + status = sys$qiow(0,icb->imcb$w_chan,IO$_ACCESS,&iosb, + 0,0,&fib_desc,0,0,0,0,0); + + /* + ** If we got the FID, now look up its name (if for some reason + ** we didn't get the device name, this call will fail). + */ + if (($VMS_STATUS_SUCCESS(status)) && ($VMS_STATUS_SUCCESS(iosb.cond))) { + status = lib$fid_to_name ( + &device_name_desc, + &fib.fib$w_fid, + &file_name_desc, + &file_name_len, + 0, 0); + + /* + ** If we succeeded then remove the version number and + ** return a copy of the UNIX format version of the file name. + */ + if ($VMS_STATUS_SUCCESS(status)) { + char *p, *result; + file_name[file_name_len] = 0; + p = strrchr(file_name,';'); + if (p) *p = 0; + p = decc$translate_vms(&file_name[0]); + result = PR_Malloc(strlen(p)+1); + if (result != NULL) { + strcpy(result, p); + } + return result; + } + } + } + } + + /* Didn't find it */ + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, 0); + return NULL; + +#elif defined(HPUX) && defined(USE_HPSHL) + int index; + struct shl_descriptor desc; + char *result; + + for (index = 0; shl_get_r(index, &desc) == 0; index++) { + if (strstr(desc.filename, name) != NULL) { + result = PR_Malloc(strlen(desc.filename)+1); + if (result != NULL) { + strcpy(result, desc.filename); + } + return result; + } + } + /* + * Since the index value of a library is decremented if + * a library preceding it in the shared library search + * list was unloaded, it is possible that we missed some + * libraries as we went up the list. So we should go + * down the list to be sure that we not miss anything. + */ + for (index--; index >= 0; index--) { + if ((shl_get_r(index, &desc) == 0) + && (strstr(desc.filename, name) != NULL)) { + result = PR_Malloc(strlen(desc.filename)+1); + if (result != NULL) { + strcpy(result, desc.filename); + } + return result; + } + } + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, 0); + return NULL; +#elif defined(HPUX) && defined(USE_DLFCN) + struct load_module_desc desc; + char *result; + const char *module_name; + + if (dlmodinfo((unsigned long)addr, &desc, sizeof desc, NULL, 0, 0) == 0) { + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + return NULL; + } + module_name = dlgetname(&desc, sizeof desc, NULL, 0, 0); + if (module_name == NULL) { + /* should not happen */ + _PR_MD_MAP_DEFAULT_ERROR(_MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + return NULL; + } + result = PR_Malloc(strlen(module_name)+1); + if (result != NULL) { + strcpy(result, module_name); + } + return result; +#elif defined(WIN32) + HMODULE handle; + char module_name[MAX_PATH]; + char *result; + + handle = GetModuleHandle(name); + if (handle == NULL) { + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + return NULL; + } + if (GetModuleFileName(handle, module_name, sizeof module_name) == 0) { + /* should not happen */ + _PR_MD_MAP_DEFAULT_ERROR(_MD_ERRNO()); + return NULL; + } + result = PR_Malloc(strlen(module_name)+1); + if (result != NULL) { + strcpy(result, module_name); + } + return result; +#elif defined(XP_OS2) + HMODULE module = NULL; + char module_name[_MAX_PATH]; + char *result; + APIRET ulrc = DosQueryModFromEIP(&module, NULL, 0, NULL, NULL, (ULONG) addr); + if ((NO_ERROR != ulrc) || (NULL == module) ) { + PR_SetError(PR_LIBRARY_NOT_LOADED_ERROR, _MD_ERRNO()); + DLLErrorInternal(_MD_ERRNO()); + return NULL; + } + ulrc = DosQueryModuleName(module, sizeof module_name, module_name); + if (NO_ERROR != ulrc) { + /* should not happen */ + _PR_MD_MAP_DEFAULT_ERROR(_MD_ERRNO()); + return NULL; + } + result = PR_Malloc(strlen(module_name)+1); + if (result != NULL) { + strcpy(result, module_name); + } + return result; +#else + PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0); + return NULL; +#endif +} |