const BOOL fwrite_bloomdata_txt(FILE* const f, const BLOOM* const b, container_outputstate_t* const state) { assert(f != NULL); assert(b != NULL); if (!process_next(state, INLINE_MARKER)) return 0; // Since we do not want to determine the size of the data based on some // internals, we do something ugly instead ;) char buf[0x100]; snprintf(buf, 0x100, "%d", INT_MAX); for (char* x = buf; *x != 0x00; x++) *x = ' '; const int n = fprintf(f, "data = %"ZU"\n", (SIZE_T) b->bitsize); if (n <= 0) return FALSE; for (size_t i = 0; i < b->size;) { for (size_t j = 0; j < 16 && i < b->size; j++) { const int n = fprintf(f, "%02x", b->a[i++]); if (n <= 0) return FALSE; } if (fprintf(f, "\n") != 1) return FALSE; } return TRUE; }
static void system_clock(PSW* m) { if (process_current() != NULL) { memcpy(&process_current()->cpu, m, sizeof (PSW)); } memcpy(m, &process_next()->cpu, sizeof (PSW)); DEBUG_PRINTF(DEBUG_T_SYSTEM, "Exécution processus : %d, state = %d\n", (int)process_current()->number, process_current()->state); }
const BOOL fwrite_bloomdata_asis(FILE* const f, const BLOOM* const b, container_outputstate_t* const state) { assert(f != NULL); assert(b != NULL); if (!process_next(state, INLINE_MARKER)) return TRUE; const size_t n = fwrite(b->a, sizeof(char), b->size, f); return (n == b->size); }
const BOOL fwrite_bloomdata_ext(FILE* const config, FILE* const data, const BLOOM* const b, container_outputstate_t* const state) { assert(config != NULL); assert(data != NULL); assert(b != NULL); static const char* const BLOOM_FNAME = "bloom.data"; if (!process_next(state, BLOOM_FNAME)) return 0; const int n = fprintf(config, "data = %s/%"ZU"\n", BLOOM_FNAME, (SIZE_T) b->bitsize); if (n <= 0) return FALSE; return fwrite_bloomdata_asis(data, b, NULL); }
const BOOL fwrite_bloomdata_inline(FILE* const f, const BLOOM* const b, container_outputstate_t* const state) { assert(f != NULL); assert(b != NULL); if (!process_next(state, INLINE_MARKER)) return TRUE; // Since we do not want to determine the size of the data based on some // internals, we do something ugly instead ;) const int n = fprintf(f, "data = %"ZU"raw\n", (SIZE_T) b->bitsize); if (n <= 0) return FALSE; if (!fwrite_bloomdata_asis(f, b, NULL)) return FALSE; return (fprintf(f, "\n") == 1); }
static PSW systeme_init(void) { DEBUG_PUTS(DEBUG_T_SYSTEM, "Booting"); process_init(); //Création du processus père process_alloc()->state = PROC_STATE_READY; process_next(); PSW cpu; const int varIndex = 15; /*** creation d'un programme ***/ make_inst(0, INST_SUB, 1, 1, 0); //R1 = 0 make_inst(1, INST_SUB, 2, 2, 0); //R2 = 0 make_inst(2, INST_STORE, 1, 1, varIndex); //mem[15] = 0 make_inst(3, INST_SYSC, 2, 2, SYSC_FORK); //R2 = fork() make_inst(4, INST_IFGT, 0, 0, 10); //if(AC == 0) faire fils, sinon le père //Code fils make_inst(5, INST_ADD, 1, 0, 1); //R1 = 1 make_inst(6, INST_SYSC, 1, 0, SYSC_PUTI); //puti(1) make_inst(7, INST_SYSC, 1, 0, SYSC_SLEEP);//sleep(1) make_inst(8, INST_SYSC, 1, 0, SYSC_PUTI);//puti(1) make_inst(9, INST_SYSC, 0, 0, SYSC_EXIT);//exit() //Code Père make_inst(10, INST_ADD, 1, 0, 1); //R1 = 4 make_inst(11, INST_SYSC, 1, 0, SYSC_SLEEP); //sleep(4) make_inst(12, INST_JUMP, 0, 0, 3); //refait le fork make_inst(13, INST_SYSC, 2, 0, SYSC_PUTI); //puti(R2) make_inst(14, INST_JUMP, 0, 0, 11); /*** valeur initiale du PSW ***/ memset(&cpu, 0, sizeof (PSW)); cpu.IN = INT_NONE; cpu.PC = 0; cpu.SB = 0; cpu.SS = 20; return cpu; }
/* This function should be invoked when the assuan connected FD is ready for reading. If the equivalent to EWOULDBLOCK is returned (this should be done by the command handler), assuan_process_next should be invoked the next time the connected FD is readable. Eventually, the caller will finish by invoking assuan_process_done. DONE is set to 1 if the connection has ended. */ gpg_error_t assuan_process_next (assuan_context_t ctx, int *done) { gpg_error_t rc; if (done) *done = 0; ctx->process_complete = 0; do { rc = process_next (ctx); } while (!rc && !ctx->process_complete && assuan_pending_line (ctx)); if (done) *done = !!ctx->process_complete; return rc; }
int RAND_poll(void) { MEMORYSTATUS m; HCRYPTPROV hProvider = 0; DWORD w; int good = 0; /* Determine the OS version we are on so we can turn off things * that do not work properly. */ OSVERSIONINFO osverinfo ; osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ; GetVersionEx( &osverinfo ) ; #if defined(OPENSSL_SYS_WINCE) # if defined(_WIN32_WCE) && _WIN32_WCE>=300 /* Even though MSDN says _WIN32_WCE>=210, it doesn't seem to be available * in commonly available implementations prior 300... */ { BYTE buf[64]; /* poll the CryptoAPI PRNG */ /* The CryptoAPI returns sizeof(buf) bytes of randomness */ if (CryptAcquireContextW(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) { if (CryptGenRandom(hProvider, sizeof(buf), buf)) RAND_add(buf, sizeof(buf), sizeof(buf)); CryptReleaseContext(hProvider, 0); } } # endif #else /* OPENSSL_SYS_WINCE */ /* * None of below libraries are present on Windows CE, which is * why we #ifndef the whole section. This also excuses us from * handling the GetProcAddress issue. The trouble is that in * real Win32 API GetProcAddress is available in ANSI flavor * only. In WinCE on the other hand GetProcAddress is a macro * most commonly defined as GetProcAddressW, which accepts * Unicode argument. If we were to call GetProcAddress under * WinCE, I'd recommend to either redefine GetProcAddress as * GetProcAddressA (there seem to be one in common CE spec) or * implement own shim routine, which would accept ANSI argument * and expand it to Unicode. */ { /* load functions dynamically - not available on all systems */ HMODULE advapi = LoadLibrary(TEXT("ADVAPI32.DLL")); HMODULE kernel = LoadLibrary(TEXT("KERNEL32.DLL")); HMODULE user = NULL; HMODULE netapi = LoadLibrary(TEXT("NETAPI32.DLL")); CRYPTACQUIRECONTEXTW acquire = NULL; CRYPTGENRANDOM gen = NULL; CRYPTRELEASECONTEXT release = NULL; NETSTATGET netstatget = NULL; NETFREE netfree = NULL; BYTE buf[64]; if (netapi) { netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet"); netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree"); } if (netstatget && netfree) { LPBYTE outbuf; /* NetStatisticsGet() is a Unicode only function * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0 * contains 17 fields. We treat each field as a source of * one byte of entropy. */ if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) { RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45); netfree(outbuf); } if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) { RAND_add(outbuf, sizeof(STAT_SERVER_0), 17); netfree(outbuf); } } if (netapi) FreeLibrary(netapi); /* It appears like this can cause an exception deep within ADVAPI32.DLL * at random times on Windows 2000. Reported by Jeffrey Altman. * Only use it on NT. */ /* Wolfgang Marczy <*****@*****.**> reports that * the RegQueryValueEx call below can hang on NT4.0 (SP6). * So we don't use this at all for now. */ #if 0 if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && osverinfo.dwMajorVersion < 5) { /* Read Performance Statistics from NT/2000 registry * The size of the performance data can vary from call * to call so we must guess the size of the buffer to use * and increase its size if we get an ERROR_MORE_DATA * return instead of ERROR_SUCCESS. */ LONG rc=ERROR_MORE_DATA; char * buf=NULL; DWORD bufsz=0; DWORD length; while (rc == ERROR_MORE_DATA) { buf = realloc(buf,bufsz+8192); if (!buf) break; bufsz += 8192; length = bufsz; rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, TEXT("Global"), NULL, NULL, buf, &length); } if (rc == ERROR_SUCCESS) { /* For entropy count assume only least significant * byte of each DWORD is random. */ RAND_add(&length, sizeof(length), 0); RAND_add(buf, length, length / 4.0); /* Close the Registry Key to allow Windows to cleanup/close * the open handle * Note: The 'HKEY_PERFORMANCE_DATA' key is implicitly opened * when the RegQueryValueEx above is done. However, if * it is not explicitly closed, it can cause disk * partition manipulation problems. */ RegCloseKey(HKEY_PERFORMANCE_DATA); } if (buf) free(buf); } #endif if (advapi) { /* * If it's available, then it's available in both ANSI * and UNICODE flavors even in Win9x, documentation says. * We favor Unicode... */ acquire = (CRYPTACQUIRECONTEXTW) GetProcAddress(advapi, "CryptAcquireContextW"); gen = (CRYPTGENRANDOM) GetProcAddress(advapi, "CryptGenRandom"); release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi, "CryptReleaseContext"); } if (acquire && gen && release) { /* poll the CryptoAPI PRNG */ /* The CryptoAPI returns sizeof(buf) bytes of randomness */ if (acquire(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) { if (gen(hProvider, sizeof(buf), buf) != 0) { RAND_add(buf, sizeof(buf), 0); good = 1; #if 0 printf("randomness from PROV_RSA_FULL\n"); #endif } release(hProvider, 0); } /* poll the Pentium PRG with CryptoAPI */ if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) { if (gen(hProvider, sizeof(buf), buf) != 0) { RAND_add(buf, sizeof(buf), sizeof(buf)); good = 1; #if 0 printf("randomness from PROV_INTEL_SEC\n"); #endif } release(hProvider, 0); } } if (advapi) FreeLibrary(advapi); if ((osverinfo.dwPlatformId != VER_PLATFORM_WIN32_NT || !OPENSSL_isservice()) && (user = LoadLibrary(TEXT("USER32.DLL")))) { GETCURSORINFO cursor; GETFOREGROUNDWINDOW win; GETQUEUESTATUS queue; win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow"); cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo"); queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus"); if (win) { /* window handle */ HWND h = win(); RAND_add(&h, sizeof(h), 0); } if (cursor) { /* unfortunately, its not safe to call GetCursorInfo() * on NT4 even though it exists in SP3 (or SP6) and * higher. */ if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && osverinfo.dwMajorVersion < 5) cursor = 0; } if (cursor) { /* cursor position */ /* assume 2 bytes of entropy */ CURSORINFO ci; ci.cbSize = sizeof(CURSORINFO); if (cursor(&ci)) RAND_add(&ci, ci.cbSize, 2); } if (queue) { /* message queue status */ /* assume 1 byte of entropy */ w = queue(QS_ALLEVENTS); RAND_add(&w, sizeof(w), 1); } FreeLibrary(user); } /* Toolhelp32 snapshot: enumerate processes, threads, modules and heap * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm * (Win 9x and 2000 only, not available on NT) * * This seeding method was proposed in Peter Gutmann, Software * Generation of Practically Strong Random Numbers, * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html * revised version at http://www.cryptoengines.com/~peter/06_random.pdf * (The assignment of entropy estimates below is arbitrary, but based * on Peter's analysis the full poll appears to be safe. Additional * interactive seeding is encouraged.) */ if (kernel) { CREATETOOLHELP32SNAPSHOT snap; CLOSETOOLHELP32SNAPSHOT close_snap; HANDLE handle; HEAP32FIRST heap_first; HEAP32NEXT heap_next; HEAP32LIST heaplist_first, heaplist_next; PROCESS32 process_first, process_next; THREAD32 thread_first, thread_next; MODULE32 module_first, module_next; HEAPLIST32 hlist; HEAPENTRY32 hentry; PROCESSENTRY32 p; THREADENTRY32 t; MODULEENTRY32 m; DWORD starttime = 0; snap = (CREATETOOLHELP32SNAPSHOT) GetProcAddress(kernel, "CreateToolhelp32Snapshot"); close_snap = (CLOSETOOLHELP32SNAPSHOT) GetProcAddress(kernel, "CloseToolhelp32Snapshot"); heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First"); heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next"); heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst"); heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext"); process_first = (PROCESS32) GetProcAddress(kernel, "Process32First"); process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next"); thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First"); thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next"); module_first = (MODULE32) GetProcAddress(kernel, "Module32First"); module_next = (MODULE32) GetProcAddress(kernel, "Module32Next"); if (snap && heap_first && heap_next && heaplist_first && heaplist_next && process_first && process_next && thread_first && thread_next && module_first && module_next && (handle = snap(TH32CS_SNAPALL,0)) != INVALID_HANDLE_VALUE) { /* heap list and heap walking */ /* HEAPLIST32 contains 3 fields that will change with * each entry. Consider each field a source of 1 byte * of entropy. * HEAPENTRY32 contains 5 fields that will change with * each entry. Consider each field a source of 1 byte * of entropy. */ ZeroMemory(&hlist, sizeof(HEAPLIST32)); hlist.dwSize = sizeof(HEAPLIST32); if (good) starttime = GetTickCount(); #ifdef _MSC_VER if (heaplist_first(handle, &hlist)) { /* following discussion on dev ML, exception on WinCE (or other Win platform) is theoretically of unknown origin; prevent infinite loop here when this theoretical case occurs; otherwise cope with the expected (MSDN documented) exception-throwing behaviour of Heap32Next() on WinCE. based on patch in original message by Tanguy Fautré (2009/03/02) Subject: RAND_poll() and CreateToolhelp32Snapshot() stability */ int ex_cnt_limit = 42; do { RAND_add(&hlist, hlist.dwSize, 3); __try { ZeroMemory(&hentry, sizeof(HEAPENTRY32)); hentry.dwSize = sizeof(HEAPENTRY32); if (heap_first(&hentry, hlist.th32ProcessID, hlist.th32HeapID)) { int entrycnt = 80; do RAND_add(&hentry, hentry.dwSize, 5); while (heap_next(&hentry) && (!good || (GetTickCount()-starttime)<MAXDELAY) && --entrycnt > 0); } } __except (EXCEPTION_EXECUTE_HANDLER) { /* ignore access violations when walking the heap list */ ex_cnt_limit--; } } while (heaplist_next(handle, &hlist) && (!good || (GetTickCount()-starttime)<MAXDELAY) && ex_cnt_limit > 0); } #else if (heaplist_first(handle, &hlist)) { do { RAND_add(&hlist, hlist.dwSize, 3); hentry.dwSize = sizeof(HEAPENTRY32); if (heap_first(&hentry, hlist.th32ProcessID, hlist.th32HeapID)) { int entrycnt = 80; do RAND_add(&hentry, hentry.dwSize, 5); while (heap_next(&hentry) && --entrycnt > 0); } } while (heaplist_next(handle, &hlist) && (!good || (GetTickCount()-starttime)<MAXDELAY)); } #endif /* process walking */ /* PROCESSENTRY32 contains 9 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ p.dwSize = sizeof(PROCESSENTRY32); if (good) starttime = GetTickCount(); if (process_first(handle, &p)) do RAND_add(&p, p.dwSize, 9); while (process_next(handle, &p) && (!good || (GetTickCount()-starttime)<MAXDELAY)); /* thread walking */ /* THREADENTRY32 contains 6 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ t.dwSize = sizeof(THREADENTRY32); if (good) starttime = GetTickCount(); if (thread_first(handle, &t)) do RAND_add(&t, t.dwSize, 6); while (thread_next(handle, &t) && (!good || (GetTickCount()-starttime)<MAXDELAY)); /* module walking */ /* MODULEENTRY32 contains 9 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ m.dwSize = sizeof(MODULEENTRY32); if (good) starttime = GetTickCount(); if (module_first(handle, &m)) do RAND_add(&m, m.dwSize, 9); while (module_next(handle, &m) && (!good || (GetTickCount()-starttime)<MAXDELAY)); if (close_snap) close_snap(handle); else CloseHandle(handle); } FreeLibrary(kernel); }
/** * Execute command line * * @v command Command line * @ret rc Return status code * * Execute the named command and arguments. */ int system ( const char *command ) { int count = split_command ( ( char * ) command, NULL ); char *all_tokens[ count + 1 ]; int ( * process_next ) ( int rc ); char *command_copy; char **tokens; int argc; int process; int rc = 0; /* Create modifiable copy of command */ command_copy = strdup ( command ); if ( ! command_copy ) return -ENOMEM; /* Split command into tokens */ split_command ( command_copy, all_tokens ); all_tokens[count] = NULL; /* Process individual commands */ process = 1; for ( tokens = all_tokens ; ; tokens += ( argc + 1 ) ) { /* Find command terminator */ argc = command_terminator ( tokens, &process_next ); /* Expand tokens and execute command */ if ( process ) { char *argv[ argc + 1 ]; /* Expand tokens */ if ( ( rc = expand_tokens ( argc, tokens, argv ) ) != 0) break; argv[argc] = NULL; /* Execute command */ rc = execv ( argv[0], argv ); /* Free tokens */ free_tokens ( argv ); } /* Stop processing, if applicable */ if ( shell_stopped ( SHELL_STOP_COMMAND ) ) break; /* Stop processing if we have reached the end of the * command. */ if ( ! process_next ) break; /* Determine whether or not to process next command */ process = process_next ( rc ); } /* Free modified copy of command */ free ( command_copy ); return rc; }
/*********************************************************************** * Process32NextW (KERNEL32.@) * * Return info about the "next" process in a toolhelp32 snapshot */ BOOL WINAPI Process32NextW(HANDLE hSnapshot, LPPROCESSENTRY32W lppe) { return process_next( hSnapshot, lppe, FALSE, TRUE /* Unicode */ ); }
/*********************************************************************** * Process32Next (KERNEL32.@) * * Return info about the "next" process in a toolhelp32 snapshot */ BOOL WINAPI Process32Next(HANDLE hSnapshot, LPPROCESSENTRY32 lppe) { return process_next( hSnapshot, (PROCESSENTRY32W*)lppe, FALSE, FALSE /* ANSI */ ); }
int RAND_poll(void) { MEMORYSTATUS m; HCRYPTPROV hProvider = 0; BYTE buf[64]; DWORD w; HWND h; HMODULE advapi, kernel, user, netapi; CRYPTACQUIRECONTEXT acquire = 0; CRYPTGENRANDOM gen = 0; CRYPTRELEASECONTEXT release = 0; #if 1 /* There was previously a problem with NETSTATGET. Currently, this * section is still experimental, but if all goes well, this conditional * will be removed */ NETSTATGET netstatget = 0; NETFREE netfree = 0; #endif /* 1 */ /* Determine the OS version we are on so we can turn off things * that do not work properly. */ OSVERSIONINFO osverinfo ; osverinfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO) ; GetVersionEx( &osverinfo ) ; /* load functions dynamically - not available on all systems */ advapi = LoadLibrary("ADVAPI32.DLL"); kernel = LoadLibrary("KERNEL32.DLL"); user = LoadLibrary("USER32.DLL"); netapi = LoadLibrary("NETAPI32.DLL"); #if 1 /* There was previously a problem with NETSTATGET. Currently, this * section is still experimental, but if all goes well, this conditional * will be removed */ if (netapi) { netstatget = (NETSTATGET) GetProcAddress(netapi,"NetStatisticsGet"); netfree = (NETFREE) GetProcAddress(netapi,"NetApiBufferFree"); } if (netstatget && netfree) { LPBYTE outbuf; /* NetStatisticsGet() is a Unicode only function * STAT_WORKSTATION_0 contains 45 fields and STAT_SERVER_0 * contains 17 fields. We treat each field as a source of * one byte of entropy. */ if (netstatget(NULL, L"LanmanWorkstation", 0, 0, &outbuf) == 0) { RAND_add(outbuf, sizeof(STAT_WORKSTATION_0), 45); netfree(outbuf); } if (netstatget(NULL, L"LanmanServer", 0, 0, &outbuf) == 0) { RAND_add(outbuf, sizeof(STAT_SERVER_0), 17); netfree(outbuf); } } if (netapi) FreeLibrary(netapi); #endif /* 1 */ /* It appears like this can cause an exception deep within ADVAPI32.DLL * at random times on Windows 2000. Reported by Jeffrey Altman. * Only use it on NT. */ if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && osverinfo.dwMajorVersion < 5) { /* Read Performance Statistics from NT/2000 registry * The size of the performance data can vary from call * to call so we must guess the size of the buffer to use * and increase its size if we get an ERROR_MORE_DATA * return instead of ERROR_SUCCESS. */ LONG rc=ERROR_MORE_DATA; char * buf=NULL; DWORD bufsz=0; DWORD length; while (rc == ERROR_MORE_DATA) { buf = realloc(buf,bufsz+8192); if (!buf) break; bufsz += 8192; length = bufsz; rc = RegQueryValueEx(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, buf, &length); } if (rc == ERROR_SUCCESS) { /* For entropy count assume only least significant * byte of each DWORD is random. */ RAND_add(&length, sizeof(length), 0); RAND_add(buf, length, length / 4.0); } if (buf) free(buf); } if (advapi) { acquire = (CRYPTACQUIRECONTEXT) GetProcAddress(advapi, "CryptAcquireContextA"); gen = (CRYPTGENRANDOM) GetProcAddress(advapi, "CryptGenRandom"); release = (CRYPTRELEASECONTEXT) GetProcAddress(advapi, "CryptReleaseContext"); } if (acquire && gen && release) { /* poll the CryptoAPI PRNG */ /* The CryptoAPI returns sizeof(buf) bytes of randomness */ if (acquire(&hProvider, 0, 0, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT)) { if (gen(hProvider, sizeof(buf), buf) != 0) { RAND_add(buf, sizeof(buf), sizeof(buf)); #if 0 printf("randomness from PROV_RSA_FULL\n"); #endif } release(hProvider, 0); } /* poll the Pentium PRG with CryptoAPI */ if (acquire(&hProvider, 0, INTEL_DEF_PROV, PROV_INTEL_SEC, 0)) { if (gen(hProvider, sizeof(buf), buf) != 0) { RAND_add(buf, sizeof(buf), sizeof(buf)); #if 0 printf("randomness from PROV_INTEL_SEC\n"); #endif } release(hProvider, 0); } } if (advapi) FreeLibrary(advapi); /* timer data */ readtimer(); /* memory usage statistics */ GlobalMemoryStatus(&m); RAND_add(&m, sizeof(m), 1); /* process ID */ w = GetCurrentProcessId(); RAND_add(&w, sizeof(w), 1); if (user) { GETCURSORINFO cursor; GETFOREGROUNDWINDOW win; GETQUEUESTATUS queue; win = (GETFOREGROUNDWINDOW) GetProcAddress(user, "GetForegroundWindow"); cursor = (GETCURSORINFO) GetProcAddress(user, "GetCursorInfo"); queue = (GETQUEUESTATUS) GetProcAddress(user, "GetQueueStatus"); if (win) { /* window handle */ h = win(); RAND_add(&h, sizeof(h), 0); } if (cursor) { /* unfortunately, its not safe to call GetCursorInfo() * on NT4 even though it exists in SP3 (or SP6) and * higher. */ if ( osverinfo.dwPlatformId == VER_PLATFORM_WIN32_NT && osverinfo.dwMajorVersion < 5) cursor = 0; } if (cursor) { /* cursor position */ /* assume 2 bytes of entropy */ CURSORINFO ci; ci.cbSize = sizeof(CURSORINFO); if (cursor(&ci)) RAND_add(&ci, ci.cbSize, 2); } if (queue) { /* message queue status */ /* assume 1 byte of entropy */ w = queue(QS_ALLEVENTS); RAND_add(&w, sizeof(w), 1); } FreeLibrary(user); } /* Toolhelp32 snapshot: enumerate processes, threads, modules and heap * http://msdn.microsoft.com/library/psdk/winbase/toolhelp_5pfd.htm * (Win 9x and 2000 only, not available on NT) * * This seeding method was proposed in Peter Gutmann, Software * Generation of Practically Strong Random Numbers, * http://www.usenix.org/publications/library/proceedings/sec98/gutmann.html * revised version at http://www.cryptoengines.com/~peter/06_random.pdf * (The assignment of entropy estimates below is arbitrary, but based * on Peter's analysis the full poll appears to be safe. Additional * interactive seeding is encouraged.) */ if (kernel) { CREATETOOLHELP32SNAPSHOT snap; HANDLE handle; HEAP32FIRST heap_first; HEAP32NEXT heap_next; HEAP32LIST heaplist_first, heaplist_next; PROCESS32 process_first, process_next; THREAD32 thread_first, thread_next; MODULE32 module_first, module_next; HEAPLIST32 hlist; HEAPENTRY32 hentry; PROCESSENTRY32 p; THREADENTRY32 t; MODULEENTRY32 m; snap = (CREATETOOLHELP32SNAPSHOT) GetProcAddress(kernel, "CreateToolhelp32Snapshot"); heap_first = (HEAP32FIRST) GetProcAddress(kernel, "Heap32First"); heap_next = (HEAP32NEXT) GetProcAddress(kernel, "Heap32Next"); heaplist_first = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListFirst"); heaplist_next = (HEAP32LIST) GetProcAddress(kernel, "Heap32ListNext"); process_first = (PROCESS32) GetProcAddress(kernel, "Process32First"); process_next = (PROCESS32) GetProcAddress(kernel, "Process32Next"); thread_first = (THREAD32) GetProcAddress(kernel, "Thread32First"); thread_next = (THREAD32) GetProcAddress(kernel, "Thread32Next"); module_first = (MODULE32) GetProcAddress(kernel, "Module32First"); module_next = (MODULE32) GetProcAddress(kernel, "Module32Next"); if (snap && heap_first && heap_next && heaplist_first && heaplist_next && process_first && process_next && thread_first && thread_next && module_first && module_next && (handle = snap(TH32CS_SNAPALL,0)) != NULL) { /* heap list and heap walking */ /* HEAPLIST32 contains 3 fields that will change with * each entry. Consider each field a source of 1 byte * of entropy. * HEAPENTRY32 contains 5 fields that will change with * each entry. Consider each field a source of 1 byte * of entropy. */ hlist.dwSize = sizeof(HEAPLIST32); if (heaplist_first(handle, &hlist)) do { RAND_add(&hlist, hlist.dwSize, 3); hentry.dwSize = sizeof(HEAPENTRY32); if (heap_first(&hentry, hlist.th32ProcessID, hlist.th32HeapID)) { int entrycnt = 50; do RAND_add(&hentry, hentry.dwSize, 5); while (heap_next(&hentry) && --entrycnt > 0); } } while (heaplist_next(handle, &hlist)); /* process walking */ /* PROCESSENTRY32 contains 9 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ p.dwSize = sizeof(PROCESSENTRY32); if (process_first(handle, &p)) do RAND_add(&p, p.dwSize, 9); while (process_next(handle, &p)); /* thread walking */ /* THREADENTRY32 contains 6 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ t.dwSize = sizeof(THREADENTRY32); if (thread_first(handle, &t)) do RAND_add(&t, t.dwSize, 6); while (thread_next(handle, &t)); /* module walking */ /* MODULEENTRY32 contains 9 fields that will change * with each entry. Consider each field a source of * 1 byte of entropy. */ m.dwSize = sizeof(MODULEENTRY32); if (module_first(handle, &m)) do RAND_add(&m, m.dwSize, 9); while (module_next(handle, &m)); CloseHandle(handle); } FreeLibrary(kernel); } #if 0 printf("Exiting RAND_poll\n"); #endif return(1); }