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/*
* Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
// Disable too-long symbol warnings
#pragma warning ( disable : 4786 )
#include "libInfo.hpp"
#include "nt4internals.hpp"
#include "isNT4.hpp"
#include "toolHelp.hpp"
#include <assert.h>
using namespace std;
typedef void LibInfoImplFunc(DWORD pid, vector<LibInfo>& info);
static void libInfoImplNT4(DWORD pid, vector<LibInfo>& info);
static void libInfoImplToolHelp(DWORD pid, vector<LibInfo>& info);
void
libInfo(DWORD pid, vector<LibInfo>& info) {
static LibInfoImplFunc* impl = NULL;
if (impl == NULL) {
// See which operating system we're on
impl = (isNT4() ? &libInfoImplNT4 : &libInfoImplToolHelp);
}
assert(impl != NULL);
(*impl)(pid, info);
}
static ULONG
ModuleCount(NT4::PDEBUG_BUFFER db) {
return db->ModuleInformation ? *PULONG(db->ModuleInformation) : 0;
}
#define MAX2(a, b) (((a) < (b)) ? (b) : (a))
static void
libInfoImplNT4(DWORD pid, vector<LibInfo>& info) {
static EnumProcessModulesFunc* enumFunc = NULL;
static GetModuleFileNameExFunc* fnFunc = NULL;
static GetModuleInformationFunc* infoFunc = NULL;
if (enumFunc == NULL) {
HMODULE dll = loadPSAPIDLL();
enumFunc = (EnumProcessModulesFunc*) GetProcAddress(dll, "EnumProcessModules");
fnFunc = (GetModuleFileNameExFunc*) GetProcAddress(dll, "GetModuleFileNameExA");
infoFunc = (GetModuleInformationFunc*) GetProcAddress(dll, "GetModuleInformation");
assert(enumFunc != NULL);
assert(fnFunc != NULL);
assert(infoFunc != NULL);
}
static HMODULE* mods = new HMODULE[256];
static int numMods = 256;
if (mods == NULL) {
mods = new HMODULE[numMods];
if (mods == NULL) {
return;
}
}
bool done = false;
HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
if (proc == NULL) {
return;
}
do {
DWORD bufSize = numMods * sizeof(HMODULE);
DWORD neededSize;
if (!(*enumFunc)(proc, mods, bufSize, &neededSize)) {
// Enum failed
CloseHandle(proc);
return;
}
int numFetched = neededSize / sizeof(HMODULE);
if (numMods < numFetched) {
// Grow buffer
numMods = MAX2(numFetched, 2 * numMods);
delete[] mods;
mods = new HMODULE[numMods];
if (mods == NULL) {
CloseHandle(proc);
return;
}
} else {
char filename[MAX_PATH];
MODULEINFO modInfo;
// Iterate through and fetch each one's info
for (int i = 0; i < numFetched; i++) {
if (!(*fnFunc)(proc, mods[i], filename, MAX_PATH)) {
CloseHandle(proc);
return;
}
if (!(*infoFunc)(proc, mods[i], &modInfo, sizeof(MODULEINFO))) {
CloseHandle(proc);
return;
}
info.push_back(LibInfo(string(filename), (void*) modInfo.lpBaseOfDll));
}
done = true;
}
} while (!done);
CloseHandle(proc);
return;
}
void
libInfoImplToolHelp(DWORD pid, vector<LibInfo>& info) {
using namespace ToolHelp;
static CreateToolhelp32SnapshotFunc* snapshotFunc = NULL;
static Module32FirstFunc* firstFunc = NULL;
static Module32NextFunc* nextFunc = NULL;
if (snapshotFunc == NULL) {
HMODULE dll = loadDLL();
snapshotFunc =
(CreateToolhelp32SnapshotFunc*) GetProcAddress(dll,
"CreateToolhelp32Snapshot");
firstFunc = (Module32FirstFunc*) GetProcAddress(dll,
"Module32First");
nextFunc = (Module32NextFunc*) GetProcAddress(dll,
"Module32Next");
assert(snapshotFunc != NULL);
assert(firstFunc != NULL);
assert(nextFunc != NULL);
}
HANDLE snapshot = (*snapshotFunc)(TH32CS_SNAPMODULE, pid);
if (snapshot == (HANDLE) -1) {
// Error occurred during snapshot
return;
}
// Iterate
MODULEENTRY32 module;
if ((*firstFunc)(snapshot, &module)) {
do {
info.push_back(LibInfo(string(module.szExePath), (void*) module.modBaseAddr));
} while ((*nextFunc)(snapshot, &module));
}
CloseHandle(snapshot);
}
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