--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Python/dynload_win.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,266 @@
+
+/* Support for dynamic loading of extension modules */
+
+#include "Python.h"
+
+#ifdef HAVE_DIRECT_H
+#include <direct.h>
+#endif
+#include <ctype.h>
+
+#include "importdl.h"
+#include <windows.h>
+
+const struct filedescr _PyImport_DynLoadFiletab[] = {
+#ifdef _DEBUG
+ {"_d.pyd", "rb", C_EXTENSION},
+#else
+ {".pyd", "rb", C_EXTENSION},
+#endif
+ {0, 0}
+};
+
+
+/* Case insensitive string compare, to avoid any dependencies on particular
+ C RTL implementations */
+
+static int strcasecmp (char *string1, char *string2)
+{
+ int first, second;
+
+ do {
+ first = tolower(*string1);
+ second = tolower(*string2);
+ string1++;
+ string2++;
+ } while (first && first == second);
+
+ return (first - second);
+}
+
+
+/* Function to return the name of the "python" DLL that the supplied module
+ directly imports. Looks through the list of imported modules and
+ returns the first entry that starts with "python" (case sensitive) and
+ is followed by nothing but numbers until the separator (period).
+
+ Returns a pointer to the import name, or NULL if no matching name was
+ located.
+
+ This function parses through the PE header for the module as loaded in
+ memory by the system loader. The PE header is accessed as documented by
+ Microsoft in the MSDN PE and COFF specification (2/99), and handles
+ both PE32 and PE32+. It only worries about the direct import table and
+ not the delay load import table since it's unlikely an extension is
+ going to be delay loading Python (after all, it's already loaded).
+
+ If any magic values are not found (e.g., the PE header or optional
+ header magic), then this function simply returns NULL. */
+
+#define DWORD_AT(mem) (*(DWORD *)(mem))
+#define WORD_AT(mem) (*(WORD *)(mem))
+
+static char *GetPythonImport (HINSTANCE hModule)
+{
+ unsigned char *dllbase, *import_data, *import_name;
+ DWORD pe_offset, opt_offset;
+ WORD opt_magic;
+ int num_dict_off, import_off;
+
+ /* Safety check input */
+ if (hModule == NULL) {
+ return NULL;
+ }
+
+ /* Module instance is also the base load address. First portion of
+ memory is the MS-DOS loader, which holds the offset to the PE
+ header (from the load base) at 0x3C */
+ dllbase = (unsigned char *)hModule;
+ pe_offset = DWORD_AT(dllbase + 0x3C);
+
+ /* The PE signature must be "PE\0\0" */
+ if (memcmp(dllbase+pe_offset,"PE\0\0",4)) {
+ return NULL;
+ }
+
+ /* Following the PE signature is the standard COFF header (20
+ bytes) and then the optional header. The optional header starts
+ with a magic value of 0x10B for PE32 or 0x20B for PE32+ (PE32+
+ uses 64-bits for some fields). It might also be 0x107 for a ROM
+ image, but we don't process that here.
+
+ The optional header ends with a data dictionary that directly
+ points to certain types of data, among them the import entries
+ (in the second table entry). Based on the header type, we
+ determine offsets for the data dictionary count and the entry
+ within the dictionary pointing to the imports. */
+
+ opt_offset = pe_offset + 4 + 20;
+ opt_magic = WORD_AT(dllbase+opt_offset);
+ if (opt_magic == 0x10B) {
+ /* PE32 */
+ num_dict_off = 92;
+ import_off = 104;
+ } else if (opt_magic == 0x20B) {
+ /* PE32+ */
+ num_dict_off = 108;
+ import_off = 120;
+ } else {
+ /* Unsupported */
+ return NULL;
+ }
+
+ /* Now if an import table exists, offset to it and walk the list of
+ imports. The import table is an array (ending when an entry has
+ empty values) of structures (20 bytes each), which contains (at
+ offset 12) a relative address (to the module base) at which a
+ string constant holding the import name is located. */
+
+ if (DWORD_AT(dllbase + opt_offset + num_dict_off) >= 2) {
+ /* We have at least 2 tables - the import table is the second
+ one. But still it may be that the table size is zero */
+ if (0 == DWORD_AT(dllbase + opt_offset + import_off + sizeof(DWORD)))
+ return NULL;
+ import_data = dllbase + DWORD_AT(dllbase +
+ opt_offset +
+ import_off);
+ while (DWORD_AT(import_data)) {
+ import_name = dllbase + DWORD_AT(import_data+12);
+ if (strlen(import_name) >= 6 &&
+ !strncmp(import_name,"python",6)) {
+ char *pch;
+
+ /* Ensure python prefix is followed only
+ by numbers to the end of the basename */
+ pch = import_name + 6;
+#ifdef _DEBUG
+ while (*pch && pch[0] != '_' && pch[1] != 'd' && pch[2] != '.') {
+#else
+ while (*pch && *pch != '.') {
+#endif
+ if (*pch >= '0' && *pch <= '9') {
+ pch++;
+ } else {
+ pch = NULL;
+ break;
+ }
+ }
+
+ if (pch) {
+ /* Found it - return the name */
+ return import_name;
+ }
+ }
+ import_data += 20;
+ }
+ }
+
+ return NULL;
+}
+
+
+dl_funcptr _PyImport_GetDynLoadFunc(const char *fqname, const char *shortname,
+ const char *pathname, FILE *fp)
+{
+ dl_funcptr p;
+ char funcname[258], *import_python;
+
+ PyOS_snprintf(funcname, sizeof(funcname), "init%.200s", shortname);
+
+ {
+ HINSTANCE hDLL = NULL;
+ char pathbuf[260];
+ LPTSTR dummy;
+ unsigned int old_mode;
+ /* We use LoadLibraryEx so Windows looks for dependent DLLs
+ in directory of pathname first. However, Windows95
+ can sometimes not work correctly unless the absolute
+ path is used. If GetFullPathName() fails, the LoadLibrary
+ will certainly fail too, so use its error code */
+
+ /* Don't display a message box when Python can't load a DLL */
+ old_mode = SetErrorMode(SEM_FAILCRITICALERRORS);
+
+ if (GetFullPathName(pathname,
+ sizeof(pathbuf),
+ pathbuf,
+ &dummy))
+ /* XXX This call doesn't exist in Windows CE */
+ hDLL = LoadLibraryEx(pathname, NULL,
+ LOAD_WITH_ALTERED_SEARCH_PATH);
+
+ /* restore old error mode settings */
+ SetErrorMode(old_mode);
+
+ if (hDLL==NULL){
+ char errBuf[256];
+ unsigned int errorCode;
+
+ /* Get an error string from Win32 error code */
+ char theInfo[256]; /* Pointer to error text
+ from system */
+ int theLength; /* Length of error text */
+
+ errorCode = GetLastError();
+
+ theLength = FormatMessage(
+ FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_IGNORE_INSERTS, /* flags */
+ NULL, /* message source */
+ errorCode, /* the message (error) ID */
+ 0, /* default language environment */
+ (LPTSTR) theInfo, /* the buffer */
+ sizeof(theInfo), /* the buffer size */
+ NULL); /* no additional format args. */
+
+ /* Problem: could not get the error message.
+ This should not happen if called correctly. */
+ if (theLength == 0) {
+ PyOS_snprintf(errBuf, sizeof(errBuf),
+ "DLL load failed with error code %d",
+ errorCode);
+ } else {
+ size_t len;
+ /* For some reason a \r\n
+ is appended to the text */
+ if (theLength >= 2 &&
+ theInfo[theLength-2] == '\r' &&
+ theInfo[theLength-1] == '\n') {
+ theLength -= 2;
+ theInfo[theLength] = '\0';
+ }
+ strcpy(errBuf, "DLL load failed: ");
+ len = strlen(errBuf);
+ strncpy(errBuf+len, theInfo,
+ sizeof(errBuf)-len);
+ errBuf[sizeof(errBuf)-1] = '\0';
+ }
+ PyErr_SetString(PyExc_ImportError, errBuf);
+ return NULL;
+ } else {
+ char buffer[256];
+
+#ifdef _DEBUG
+ PyOS_snprintf(buffer, sizeof(buffer), "python%d%d_d.dll",
+#else
+ PyOS_snprintf(buffer, sizeof(buffer), "python%d%d.dll",
+#endif
+ PY_MAJOR_VERSION,PY_MINOR_VERSION);
+ import_python = GetPythonImport(hDLL);
+
+ if (import_python &&
+ strcasecmp(buffer,import_python)) {
+ PyOS_snprintf(buffer, sizeof(buffer),
+ "Module use of %.150s conflicts "
+ "with this version of Python.",
+ import_python);
+ PyErr_SetString(PyExc_ImportError,buffer);
+ FreeLibrary(hDLL);
+ return NULL;
+ }
+ }
+ p = GetProcAddress(hDLL, funcname);
+ }
+
+ return p;
+}