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1 | /* |
2 | * Pageant client code. |
3 | */ |
4 | |
5 | #include <windows.h> |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | |
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9 | #define AGENT_COPYDATA_ID 0x804e50ba /* random goop */ |
10 | #define AGENT_MAX_MSGLEN 8192 |
11 | |
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12 | #ifdef TESTMODE |
13 | #define debug(x) (printf x) |
14 | #else |
15 | #define debug(x) |
16 | #endif |
17 | |
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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 | |
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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) { |
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34 | HWND hwnd; |
35 | char mapname[64]; |
36 | HANDLE filemap; |
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37 | unsigned char *p, *ret; |
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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; |
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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; |
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58 | id = SendMessage(hwnd, WM_COPYDATA, (WPARAM)NULL, (LPARAM)&cds); |
59 | debug(("return is %d\n", id)); |
60 | if (id > 0) { |
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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; |
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68 | } |
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69 | } |
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70 | UnmapViewOfFile(p); |
71 | CloseHandle(filemap); |
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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 |