| 1 | /* |
| 2 | * Pageant client code. |
| 3 | */ |
| 4 | |
| 5 | #include <windows.h> |
| 6 | #include <stdio.h> |
| 7 | #include <stdlib.h> |
| 8 | |
| 9 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
| 10 | #define AGENT_MAX_MSGLEN 8192 |
| 11 | |
| 12 | #ifdef TESTMODE |
| 13 | #define debug(x) (printf x) |
| 14 | #else |
| 15 | #define debug(x) |
| 16 | #endif |
| 17 | |
| 18 | #define GET_32BIT(cp) \ |
| 19 | (((unsigned long)(unsigned char)(cp)[0] << 24) | \ |
| 20 | ((unsigned long)(unsigned char)(cp)[1] << 16) | \ |
| 21 | ((unsigned long)(unsigned char)(cp)[2] << 8) | \ |
| 22 | ((unsigned long)(unsigned char)(cp)[3])) |
| 23 | |
| 24 | int agent_exists(void) { |
| 25 | HWND hwnd; |
| 26 | hwnd = FindWindow("Pageant", "Pageant"); |
| 27 | if (!hwnd) |
| 28 | return FALSE; |
| 29 | else |
| 30 | return TRUE; |
| 31 | } |
| 32 | |
| 33 | void agent_query(void *in, int inlen, void **out, int *outlen) { |
| 34 | HWND hwnd; |
| 35 | char mapname[64]; |
| 36 | HANDLE filemap; |
| 37 | unsigned char *p, *ret; |
| 38 | int id, retlen; |
| 39 | COPYDATASTRUCT cds; |
| 40 | |
| 41 | *out = NULL; |
| 42 | *outlen = 0; |
| 43 | |
| 44 | hwnd = FindWindow("Pageant", "Pageant"); |
| 45 | debug(("hwnd is %p\n", hwnd)); |
| 46 | if (!hwnd) |
| 47 | return; |
| 48 | sprintf(mapname, "PageantRequest%08x", GetCurrentThreadId()); |
| 49 | filemap = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, |
| 50 | 0, AGENT_MAX_MSGLEN, mapname); |
| 51 | if (!filemap) |
| 52 | return; |
| 53 | p = MapViewOfFile(filemap, FILE_MAP_WRITE, 0, 0, 0); |
| 54 | memcpy(p, in, inlen); |
| 55 | cds.dwData = AGENT_COPYDATA_ID; |
| 56 | cds.cbData = 1+strlen(mapname); |
| 57 | cds.lpData = mapname; |
| 58 | id = SendMessage(hwnd, WM_COPYDATA, (WPARAM)NULL, (LPARAM)&cds); |
| 59 | debug(("return is %d\n", id)); |
| 60 | if (id > 0) { |
| 61 | retlen = 4 + GET_32BIT(p); |
| 62 | debug(("len is %d\n", retlen)); |
| 63 | ret = malloc(retlen); |
| 64 | if (ret) { |
| 65 | memcpy(ret, p, retlen); |
| 66 | *out = ret; |
| 67 | *outlen = retlen; |
| 68 | } |
| 69 | } |
| 70 | UnmapViewOfFile(p); |
| 71 | CloseHandle(filemap); |
| 72 | } |
| 73 | |
| 74 | #ifdef TESTMODE |
| 75 | |
| 76 | int main(void) { |
| 77 | void *msg; |
| 78 | int len; |
| 79 | int i; |
| 80 | |
| 81 | agent_query("\0\0\0\1\1", 5, &msg, &len); |
| 82 | debug(("%d:", len)); |
| 83 | for (i = 0; i < len; i++) |
| 84 | debug((" %02x", ((unsigned char *)msg)[i])); |
| 85 | debug(("\n")); |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | #endif |