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1 | /* dl_win32.xs |
2 | * |
3 | * Platform: Win32 (Windows NT/Windows 95) |
4 | * Author: Wei-Yuen Tan (wyt@hip.com) |
5 | * Created: A warm day in June, 1995 |
6 | * |
7 | * Modified: |
8 | * August 23rd 1995 - rewritten after losing everything when I |
9 | * wiped off my NT partition (eek!) |
10 | */ |
11 | |
12 | /* Porting notes: |
13 | |
14 | I merely took Paul's dl_dlopen.xs, took out extraneous stuff and |
15 | replaced the appropriate SunOS calls with the corresponding Win32 |
16 | calls. |
17 | |
18 | */ |
19 | |
20 | #define WIN32_LEAN_AND_MEAN |
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21 | #ifdef __GNUC__ |
22 | #define Win32_Winsock |
23 | #endif |
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24 | #include <windows.h> |
25 | #include <string.h> |
26 | |
27 | #include "EXTERN.h" |
28 | #include "perl.h" |
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29 | #include "win32.h" |
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30 | |
31 | #ifdef PERL_OBJECT |
32 | #define NO_XSLOCKS |
33 | #endif /* PERL_OBJECT */ |
34 | |
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35 | #include "XSUB.h" |
36 | |
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37 | static SV *error_sv; |
38 | |
39 | static char * |
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40 | OS_Error_String(CPERLarg) |
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41 | { |
42 | DWORD err = GetLastError(); |
43 | STRLEN len; |
44 | if (!error_sv) |
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45 | error_sv = newSVpvn("",0); |
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46 | win32_str_os_error(error_sv,err); |
47 | return SvPV(error_sv,len); |
48 | } |
49 | |
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50 | #include "dlutils.c" /* SaveError() etc */ |
51 | |
52 | static void |
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53 | dl_private_init(CPERLarg) |
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54 | { |
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55 | (void)dl_generic_private_init(PERL_OBJECT_THIS); |
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56 | } |
57 | |
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58 | /* |
59 | This function assumes the list staticlinkmodules |
60 | will be formed from package names with '::' replaced |
61 | with '/'. Thus Win32::OLE is in the list as Win32/OLE |
62 | */ |
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63 | static int |
64 | dl_static_linked(char *filename) |
65 | { |
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66 | char **p; |
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67 | char* ptr; |
68 | static char subStr[] = "/auto/"; |
69 | char szBuffer[MAX_PATH]; |
70 | |
71 | /* change all the '\\' to '/' */ |
72 | strcpy(szBuffer, filename); |
73 | for(ptr = szBuffer; ptr = strchr(ptr, '\\'); ++ptr) |
74 | *ptr = '/'; |
75 | |
76 | /* delete the file name */ |
77 | ptr = strrchr(szBuffer, '/'); |
78 | if(ptr != NULL) |
79 | *ptr = '\0'; |
80 | |
81 | /* remove leading lib path */ |
82 | ptr = strstr(szBuffer, subStr); |
83 | if(ptr != NULL) |
84 | ptr += sizeof(subStr)-1; |
85 | else |
86 | ptr = szBuffer; |
87 | |
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88 | for (p = staticlinkmodules; *p;p++) { |
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89 | if (strstr(ptr, *p)) return 1; |
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90 | }; |
91 | return 0; |
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92 | } |
93 | |
94 | MODULE = DynaLoader PACKAGE = DynaLoader |
95 | |
96 | BOOT: |
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97 | (void)dl_private_init(PERL_OBJECT_THIS); |
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98 | |
99 | void * |
100 | dl_load_file(filename,flags=0) |
101 | char * filename |
102 | int flags |
103 | PREINIT: |
104 | CODE: |
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105 | WCHAR wfilename[MAX_PATH]; |
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106 | DLDEBUG(1,PerlIO_printf(PerlIO_stderr(),"dl_load_file(%s):\n", filename)); |
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107 | if (dl_static_linked(filename) == 0) { |
108 | if (USING_WIDE()) { |
109 | A2WHELPER(filename, wfilename, sizeof(wfilename), GETINTERPMODE()); |
110 | RETVAL = (void*) LoadLibraryExW(wfilename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH); |
111 | } |
112 | else { |
113 | RETVAL = (void*) LoadLibraryExA(filename, NULL, LOAD_WITH_ALTERED_SEARCH_PATH); |
114 | } |
115 | } |
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116 | else |
117 | RETVAL = (void*) GetModuleHandle(NULL); |
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118 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr()," libref=%x\n", RETVAL)); |
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119 | ST(0) = sv_newmortal() ; |
120 | if (RETVAL == NULL) |
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121 | SaveError(PERL_OBJECT_THIS_ "load_file:%s", |
122 | OS_Error_String(PERL_OBJECT_THIS)) ; |
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123 | else |
124 | sv_setiv( ST(0), (IV)RETVAL); |
125 | |
126 | |
127 | void * |
128 | dl_find_symbol(libhandle, symbolname) |
129 | void * libhandle |
130 | char * symbolname |
131 | CODE: |
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132 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_find_symbol(handle=%x, symbol=%s)\n", |
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133 | libhandle, symbolname)); |
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134 | RETVAL = (void*) GetProcAddress((HINSTANCE) libhandle, symbolname); |
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135 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr()," symbolref = %x\n", RETVAL)); |
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136 | ST(0) = sv_newmortal() ; |
137 | if (RETVAL == NULL) |
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138 | SaveError(PERL_OBJECT_THIS_ "find_symbol:%s", |
139 | OS_Error_String(PERL_OBJECT_THIS)) ; |
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140 | else |
141 | sv_setiv( ST(0), (IV)RETVAL); |
142 | |
143 | |
144 | void |
145 | dl_undef_symbols() |
146 | PPCODE: |
147 | |
148 | |
149 | |
150 | # These functions should not need changing on any platform: |
151 | |
152 | void |
153 | dl_install_xsub(perl_name, symref, filename="$Package") |
154 | char * perl_name |
155 | void * symref |
156 | char * filename |
157 | CODE: |
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158 | DLDEBUG(2,PerlIO_printf(PerlIO_stderr(),"dl_install_xsub(name=%s, symref=%x)\n", |
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159 | perl_name, symref)); |
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160 | ST(0)=sv_2mortal(newRV((SV*)newXS(perl_name, (void(*)(CV* _CPERLarg))symref, filename))); |
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161 | |
162 | |
163 | char * |
164 | dl_error() |
165 | CODE: |
166 | RETVAL = LastError ; |
167 | OUTPUT: |
168 | RETVAL |
169 | |
170 | # end. |