| Guido van Rossum | 22a1d36 | 1999-12-20 21:18:49 +0000 | [diff] [blame^] | 1 | /*********************************************************** |
| 2 | Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam, |
| 3 | The Netherlands. |
| 4 | |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Permission to use, copy, modify, and distribute this software and its |
| 8 | documentation for any purpose and without fee is hereby granted, |
| 9 | provided that the above copyright notice appear in all copies and that |
| 10 | both that copyright notice and this permission notice appear in |
| 11 | supporting documentation, and that the names of Stichting Mathematisch |
| 12 | Centrum or CWI or Corporation for National Research Initiatives or |
| 13 | CNRI not be used in advertising or publicity pertaining to |
| 14 | distribution of the software without specific, written prior |
| 15 | permission. |
| 16 | |
| 17 | While CWI is the initial source for this software, a modified version |
| 18 | is made available by the Corporation for National Research Initiatives |
| 19 | (CNRI) at the Internet address ftp://ftp.python.org. |
| 20 | |
| 21 | STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH |
| 22 | REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF |
| 23 | MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH |
| 24 | CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL |
| 25 | DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 26 | PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 27 | TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 28 | PERFORMANCE OF THIS SOFTWARE. |
| 29 | |
| 30 | ******************************************************************/ |
| 31 | |
| 32 | /* Support for dynamic loading of extension modules */ |
| 33 | |
| 34 | #include <windows.h> |
| 35 | #include <direct.h> |
| 36 | |
| 37 | #include "Python.h" |
| 38 | #include "importdl.h" |
| 39 | |
| 40 | const struct filedescr _PyImport_DynLoadFiletab[] = { |
| 41 | #ifdef _DEBUG |
| 42 | {"_d.pyd", "rb", C_EXTENSION}, |
| 43 | {"_d.dll", "rb", C_EXTENSION}, |
| 44 | #else |
| 45 | {".pyd", "rb", C_EXTENSION}, |
| 46 | {".dll", "rb", C_EXTENSION}, |
| 47 | #endif |
| 48 | {0, 0} |
| 49 | }; |
| 50 | |
| 51 | |
| 52 | dl_funcptr _PyImport_GetDynLoadFunc(const char *name, const char *funcname, |
| 53 | const char *pathname, FILE *fp) |
| 54 | { |
| 55 | dl_funcptr p; |
| 56 | |
| 57 | #ifdef MS_WIN32 |
| 58 | { |
| 59 | HINSTANCE hDLL; |
| 60 | char pathbuf[260]; |
| 61 | if (strchr(pathname, '\\') == NULL && |
| 62 | strchr(pathname, '/') == NULL) |
| 63 | { |
| 64 | /* Prefix bare filename with ".\" */ |
| 65 | char *p = pathbuf; |
| 66 | *p = '\0'; |
| 67 | _getcwd(pathbuf, sizeof pathbuf); |
| 68 | if (*p != '\0' && p[1] == ':') |
| 69 | p += 2; |
| 70 | sprintf(p, ".\\%-.255s", pathname); |
| 71 | pathname = pathbuf; |
| 72 | } |
| 73 | /* Look for dependent DLLs in directory of pathname first */ |
| 74 | /* XXX This call doesn't exist in Windows CE */ |
| 75 | hDLL = LoadLibraryEx(pathname, NULL, |
| 76 | LOAD_WITH_ALTERED_SEARCH_PATH); |
| 77 | if (hDLL==NULL){ |
| 78 | char errBuf[256]; |
| 79 | unsigned int errorCode; |
| 80 | |
| 81 | /* Get an error string from Win32 error code */ |
| 82 | char theInfo[256]; /* Pointer to error text |
| 83 | from system */ |
| 84 | int theLength; /* Length of error text */ |
| 85 | |
| 86 | errorCode = GetLastError(); |
| 87 | |
| 88 | theLength = FormatMessage( |
| 89 | FORMAT_MESSAGE_FROM_SYSTEM, /* flags */ |
| 90 | NULL, /* message source */ |
| 91 | errorCode, /* the message (error) ID */ |
| 92 | 0, /* default language environment */ |
| 93 | (LPTSTR) theInfo, /* the buffer */ |
| 94 | sizeof(theInfo), /* the buffer size */ |
| 95 | NULL); /* no additional format args. */ |
| 96 | |
| 97 | /* Problem: could not get the error message. |
| 98 | This should not happen if called correctly. */ |
| 99 | if (theLength == 0) { |
| 100 | sprintf(errBuf, |
| 101 | "DLL load failed with error code %d", |
| 102 | errorCode); |
| 103 | } else { |
| 104 | int len; |
| 105 | /* For some reason a \r\n |
| 106 | is appended to the text */ |
| 107 | if (theLength >= 2 && |
| 108 | theInfo[theLength-2] == '\r' && |
| 109 | theInfo[theLength-1] == '\n') { |
| 110 | theLength -= 2; |
| 111 | theInfo[theLength] = '\0'; |
| 112 | } |
| 113 | strcpy(errBuf, "DLL load failed: "); |
| 114 | len = strlen(errBuf); |
| 115 | strncpy(errBuf+len, theInfo, |
| 116 | sizeof(errBuf)-len); |
| 117 | errBuf[sizeof(errBuf)-1] = '\0'; |
| 118 | } |
| 119 | PyErr_SetString(PyExc_ImportError, errBuf); |
| 120 | return NULL; |
| 121 | } |
| 122 | p = GetProcAddress(hDLL, funcname); |
| 123 | } |
| 124 | #endif /* MS_WIN32 */ |
| 125 | #ifdef MS_WIN16 |
| 126 | { |
| 127 | HINSTANCE hDLL; |
| 128 | char pathbuf[16]; |
| 129 | if (strchr(pathname, '\\') == NULL && |
| 130 | strchr(pathname, '/') == NULL) |
| 131 | { |
| 132 | /* Prefix bare filename with ".\" */ |
| 133 | sprintf(pathbuf, ".\\%-.13s", pathname); |
| 134 | pathname = pathbuf; |
| 135 | } |
| 136 | hDLL = LoadLibrary(pathname); |
| 137 | if (hDLL < HINSTANCE_ERROR){ |
| 138 | char errBuf[256]; |
| 139 | sprintf(errBuf, |
| 140 | "DLL load failed with error code %d", hDLL); |
| 141 | PyErr_SetString(PyExc_ImportError, errBuf); |
| 142 | return NULL; |
| 143 | } |
| 144 | p = GetProcAddress(hDLL, funcname); |
| 145 | } |
| 146 | #endif /* MS_WIN16 */ |
| 147 | |
| 148 | return p; |
| 149 | } |