static const char *fullprogpath(void)
{
static char path[MAXPATHLEN*2];
static char prog[MAXPATHLEN];
BPTR dir;
extern BOOL from_WB; /* in main.c */
// If the program name contains ':' or '/' it's not in the user's path
// and probably set by using Py_SetProgramName. In that case, just
// use this. If it exists!
strcpy(path,Py_GetProgramName());
if(strchr(path,':') || strchr(path,'/'))
{
if(!isxfile(path))
{
// Error; the specified file does not exist or is no exe
path[0]='\0';
}
return path;
}
// Construct the full path of our executable program.
if(from_WB)
{
/* We're launced from WB, GetProgramName() won't work */
/* Use WB's argv[0] as the executable path */
int argc;
char **argv;
Py_GetArgcArgv(&argc, &argv);
if(argc>0)
strcpy(path,argv[0]);
else
strcpy(path,"!error!");
}
else
{
/* Launced from CLI, use GetProgramName */
/* However, first check if the specified name exists */
if(!isxfile(path))
{
path[0]='\0';
return path;
}
path[0]=0;
if(dir=GetProgramDir())
{
(void)NameFromLock(dir,path,MAXPATHLEN);
if(!GetProgramName(prog,MAXPATHLEN)) // this is a dos.library function!
strcpy(prog,"!error!");
if(!AddPart(path,prog,MAXPATHLEN*2))
strcpy(path,"!error!");
}
}
return path;
}
/** Determine paths.
Two directories must be found, the platform independent directory
(prefix), containing the common .py and .pyc files, and the platform
dependent directory (exec_prefix), containing the shared library
modules. Note that prefix and exec_prefix are the same directory
for UEFI installations.
Separate searches are carried out for prefix and exec_prefix.
Each search tries a number of different locations until a ``landmark''
file or directory is found. If no prefix or exec_prefix is found, a
warning message is issued and the preprocessor defined PREFIX and
EXEC_PREFIX are used (even though they may not work); python carries on
as best as is possible, but some imports may fail.
Before any searches are done, the location of the executable is
determined. If argv[0] has one or more slashes in it, it is used
unchanged. Otherwise, it must have been invoked from the shell's path,
so we search %PATH% for the named executable and use that. If the
executable was not found on %PATH% (or there was no %PATH% environment
variable), the original argv[0] string is used.
Finally, argv0_path is set to the directory containing the executable
(i.e. the last component is stripped).
With argv0_path in hand, we perform a number of steps. The same steps
are performed for prefix and for exec_prefix, but with a different
landmark.
The prefix landmark will always be lib/python.VERSION/os.py and the
exec_prefix will always be lib/python.VERSION/dynaload, where VERSION
is Python's version number as defined at the beginning of this file.
First. See if the %PYTHONHOME% environment variable points to the
installed location of the Python libraries. If %PYTHONHOME% is set, then
it points to prefix and exec_prefix. %PYTHONHOME% can be a single
directory, which is used for both, or the prefix and exec_prefix
directories separated by the DELIM character.
Next. Search the directories pointed to by the preprocessor variables
PREFIX and EXEC_PREFIX. These paths are prefixed with the volume name
extracted from argv0_path. The volume names correspond to the UEFI
shell "map" names.
That's it!
Well, almost. Once we have determined prefix and exec_prefix, the
preprocessor variable PYTHONPATH is used to construct a path. Each
relative path on PYTHONPATH is prefixed with prefix. Then the directory
containing the shared library modules is appended. The environment
variable $PYTHONPATH is inserted in front of it all. Finally, the
prefix and exec_prefix globals are tweaked so they reflect the values
expected by other code, by stripping the "lib/python$VERSION/..." stuff
off. This seems to make more sense given that currently the only
known use of sys.prefix and sys.exec_prefix is for the ILU installation
process to find the installed Python tree.
The final, fully resolved, paths should look something like:
fs0:/Efi/Tools/python.efi
fs0:/Efi/StdLib/lib/python27
fs0:/Efi/StdLib/lib/python27/dynaload
**/
static void
calculate_path(void)
{
extern char *Py_GetProgramName(void);
static char delimiter[2] = {DELIM, '\0'};
static char separator[2] = {SEP, '\0'};
char *pythonpath = PYTHONPATH;
char *rtpypath = Py_GETENV("PYTHONPATH");
//char *home = Py_GetPythonHome();
char *path = getenv("path");
char *prog = Py_GetProgramName();
char argv0_path[MAXPATHLEN+1];
char zip_path[MAXPATHLEN+1];
char *buf;
size_t bufsz;
size_t prefixsz;
char *defpath;
/* ###########################################################################
Determine path to the Python.efi binary.
Produces progpath, argv0_path, and volume_name.
########################################################################### */
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (strchr(prog, SEP))
strncpy(progpath, prog, MAXPATHLEN);
else if (path) {
while (1) {
char *delim = strchr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN)
len = MAXPATHLEN;
strncpy(progpath, path, len);
*(progpath + len) = '\0';
}
else
strncpy(progpath, path, MAXPATHLEN);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
if ( (!is_absolute(progpath)) && (progpath[0] != '\0') )
absolutize(progpath);
strncpy(argv0_path, progpath, MAXPATHLEN);
argv0_path[MAXPATHLEN] = '\0';
set_volume(volume_name, argv0_path);
reduce(argv0_path);
/* At this point, argv0_path is guaranteed to be less than
MAXPATHLEN bytes long.
*/
/* ###########################################################################
Build the FULL prefix string, including volume name.
This is the full path to the platform independent libraries.
########################################################################### */
strncpy(prefix, volume_name, MAXPATHLEN);
joinpath(prefix, PREFIX);
joinpath(prefix, lib_python);
/* ###########################################################################
Build the FULL path to the zipped-up Python library.
########################################################################### */
strncpy(zip_path, prefix, MAXPATHLEN);
zip_path[MAXPATHLEN] = '\0';
reduce(zip_path);
joinpath(zip_path, "python00.zip");
bufsz = strlen(zip_path); /* Replace "00" with version */
zip_path[bufsz - 6] = VERSION[0];
zip_path[bufsz - 5] = VERSION[1];
/* ###########################################################################
Build the FULL path to dynamically loadable libraries.
########################################################################### */
strncpy(exec_prefix, volume_name, MAXPATHLEN); // "fs0:"
joinpath(exec_prefix, EXEC_PREFIX); // "fs0:/Efi/StdLib"
joinpath(exec_prefix, lib_python); // "fs0:/Efi/StdLib/lib/python.27"
joinpath(exec_prefix, "lib-dynload"); // "fs0:/Efi/StdLib/lib/python.27/lib-dynload"
/* ###########################################################################
Build the module search path.
########################################################################### */
/* Reduce prefix and exec_prefix to their essence,
* e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
* If we're loading relative to the build directory,
* return the compiled-in defaults instead.
*/
reduce(prefix);
reduce(prefix);
/* The prefix is the root directory, but reduce() chopped
* off the "/". */
if (!prefix[0]) {
strcpy(prefix, volume_name);
}
bufsz = strlen(prefix);
if(prefix[bufsz-1] == ':') { // if prefix consists solely of a volume_name
prefix[bufsz] = SEP; // then append SEP indicating the root directory
prefix[bufsz+1] = 0; // and ensure the new string is terminated
}
/* Calculate size of return buffer.
*/
defpath = pythonpath;
bufsz = 0;
if (rtpypath)
bufsz += strlen(rtpypath) + 1;
prefixsz = strlen(prefix) + 1;
while (1) {
char *delim = strchr(defpath, DELIM);
if (is_absolute(defpath) == 0)
/* Paths are relative to prefix */
bufsz += prefixsz;
if (delim)
bufsz += delim - defpath + 1;
else {
bufsz += strlen(defpath) + 1;
break;
}
defpath = delim + 1;
}
bufsz += strlen(zip_path) + 1;
bufsz += strlen(exec_prefix) + 1;
/* This is the only malloc call in this file */
buf = (char *)PyMem_Malloc(bufsz);
if (buf == NULL) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = PYTHONPATH;
}
else {
/* Run-time value of $PYTHONPATH goes first */
if (rtpypath) {
strcpy(buf, rtpypath);
strcat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next is the default zip path */
strcat(buf, zip_path);
strcat(buf, delimiter);
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.
*/
defpath = pythonpath;
while (1) {
char *delim = strchr(defpath, DELIM);
if (is_absolute(defpath) != 1) {
strcat(buf, prefix);
strcat(buf, separator);
}
if (delim) {
size_t len = delim - defpath + 1;
size_t end = strlen(buf) + len;
strncat(buf, defpath, len);
*(buf + end) = '\0';
}
else {
strcat(buf, defpath);
break;
}
defpath = delim + 1;
}
strcat(buf, delimiter);
/* Finally, on goes the directory for dynamic-load modules */
strcat(buf, exec_prefix);
/* And publish the results */
module_search_path = buf;
}
/* At this point, exec_prefix is set to VOL:/Efi/StdLib/lib/python.27/dynalib.
We want to get back to the root value, so we have to remove the final three
segments to get VOL:/Efi/StdLib. Because we don't know what VOL is, and
EXEC_PREFIX is also indeterminate, we just remove the three final segments.
*/
reduce(exec_prefix);
reduce(exec_prefix);
reduce(exec_prefix);
if (!exec_prefix[0]) {
strcpy(exec_prefix, volume_name);
}
bufsz = strlen(exec_prefix);
if(exec_prefix[bufsz-1] == ':') {
exec_prefix[bufsz] = SEP;
exec_prefix[bufsz+1] = 0;
}
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: module_search_path = \"%s\"\n", __func__, __LINE__, module_search_path);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: prefix = \"%s\"\n", __func__, __LINE__, prefix);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: exec_prefix = \"%s\"\n", __func__, __LINE__, exec_prefix);
if (Py_VerboseFlag) PySys_WriteStderr("%s[%d]: progpath = \"%s\"\n", __func__, __LINE__, progpath);
}
static void
calculate_path(void)
{
extern wchar_t *Py_GetProgramName(void);
static wchar_t delimiter[2] = {DELIM, '\0'};
static wchar_t separator[2] = {SEP, '\0'};
char *_rtpypath = Py_GETENV("PYTHONPATH"); /* XXX use wide version on Windows */
wchar_t rtpypath[MAXPATHLEN+1];
wchar_t *home = Py_GetPythonHome();
char *_path = getenv("PATH");
wchar_t *path_buffer = NULL;
wchar_t *path = NULL;
wchar_t *prog = Py_GetProgramName();
wchar_t argv0_path[MAXPATHLEN+1];
wchar_t zip_path[MAXPATHLEN+1];
int pfound, efound; /* 1 if found; -1 if found build directory */
wchar_t *buf;
size_t bufsz;
size_t prefixsz;
wchar_t *defpath;
#ifdef WITH_NEXT_FRAMEWORK
NSModule pythonModule;
#endif
#ifdef __APPLE__
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
uint32_t nsexeclength = MAXPATHLEN;
#else
unsigned long nsexeclength = MAXPATHLEN;
#endif
char execpath[MAXPATHLEN+1];
#endif
wchar_t *_pythonpath, *_prefix, *_exec_prefix;
_pythonpath = _Py_char2wchar(PYTHONPATH, NULL);
_prefix = _Py_char2wchar(PREFIX, NULL);
_exec_prefix = _Py_char2wchar(EXEC_PREFIX, NULL);
if (!_pythonpath || !_prefix || !_exec_prefix) {
Py_FatalError(
"Unable to decode path variables in getpath.c: "
"memory error");
}
if (_path) {
path_buffer = _Py_char2wchar(_path, NULL);
path = path_buffer;
}
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (wcschr(prog, SEP))
wcsncpy(progpath, prog, MAXPATHLEN);
#ifdef __APPLE__
/* On Mac OS X, if a script uses an interpreter of the form
* "#!/opt/python2.3/bin/python", the kernel only passes "python"
* as argv[0], which falls through to the $PATH search below.
* If /opt/python2.3/bin isn't in your path, or is near the end,
* this algorithm may incorrectly find /usr/bin/python. To work
* around this, we can use _NSGetExecutablePath to get a better
* hint of what the intended interpreter was, although this
* will fail if a relative path was used. but in that case,
* absolutize() should help us out below
*/
else if(0 == _NSGetExecutablePath(execpath, &nsexeclength) && execpath[0] == SEP) {
size_t r = mbstowcs(progpath, execpath, MAXPATHLEN+1);
if (r == (size_t)-1 || r > MAXPATHLEN) {
/* Could not convert execpath, or it's too long. */
progpath[0] = '\0';
}
}
#endif /* __APPLE__ */
else if (path) {
while (1) {
wchar_t *delim = wcschr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN)
len = MAXPATHLEN;
wcsncpy(progpath, path, len);
*(progpath + len) = '\0';
}
else
wcsncpy(progpath, path, MAXPATHLEN);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = L'\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
if (path_buffer != NULL)
PyMem_Free(path_buffer);
if (progpath[0] != SEP && progpath[0] != '\0')
absolutize(progpath);
wcsncpy(argv0_path, progpath, MAXPATHLEN);
argv0_path[MAXPATHLEN] = '\0';
#ifdef WITH_NEXT_FRAMEWORK
/* On Mac OS X we have a special case if we're running from a framework.
** This is because the python home should be set relative to the library,
** which is in the framework, not relative to the executable, which may
** be outside of the framework. Except when we're in the build directory...
*/
pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize"));
/* Use dylib functions to find out where the framework was loaded from */
buf = (wchar_t *)NSLibraryNameForModule(pythonModule);
if (buf != NULL) {
/* We're in a framework. */
/* See if we might be in the build directory. The framework in the
** build directory is incomplete, it only has the .dylib and a few
** needed symlinks, it doesn't have the Lib directories and such.
** If we're running with the framework from the build directory we must
** be running the interpreter in the build directory, so we use the
** build-directory-specific logic to find Lib and such.
*/
wcsncpy(argv0_path, buf, MAXPATHLEN);
reduce(argv0_path);
joinpath(argv0_path, lib_python);
joinpath(argv0_path, LANDMARK);
if (!ismodule(argv0_path)) {
/* We are in the build directory so use the name of the
executable - we know that the absolute path is passed */
wcsncpy(argv0_path, progpath, MAXPATHLEN);
}
else {
/* Use the location of the library as the progpath */
wcsncpy(argv0_path, buf, MAXPATHLEN);
}
}
#endif
#if HAVE_READLINK
{
wchar_t tmpbuffer[MAXPATHLEN+1];
int linklen = _Py_wreadlink(progpath, tmpbuffer, MAXPATHLEN);
while (linklen != -1) {
if (tmpbuffer[0] == SEP)
/* tmpbuffer should never be longer than MAXPATHLEN,
but extra check does not hurt */
wcsncpy(argv0_path, tmpbuffer, MAXPATHLEN);
else {
/* Interpret relative to progpath */
reduce(argv0_path);
joinpath(argv0_path, tmpbuffer);
}
linklen = _Py_wreadlink(argv0_path, tmpbuffer, MAXPATHLEN);
}
}
#endif /* HAVE_READLINK */
reduce(argv0_path);
/* At this point, argv0_path is guaranteed to be less than
MAXPATHLEN bytes long.
*/
if (!(pfound = search_for_prefix(argv0_path, home, _prefix))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform independent libraries <prefix>\n");
wcsncpy(prefix, _prefix, MAXPATHLEN);
joinpath(prefix, lib_python);
}
else
reduce(prefix);
wcsncpy(zip_path, prefix, MAXPATHLEN);
zip_path[MAXPATHLEN] = L'\0';
if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */
reduce(zip_path);
reduce(zip_path);
}
else
wcsncpy(zip_path, _prefix, MAXPATHLEN);
joinpath(zip_path, L"lib/python00.zip");
bufsz = wcslen(zip_path); /* Replace "00" with version */
zip_path[bufsz - 6] = VERSION[0];
zip_path[bufsz - 5] = VERSION[2];
if (!(efound = search_for_exec_prefix(argv0_path, home, _exec_prefix))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform dependent libraries <exec_prefix>\n");
wcsncpy(exec_prefix, _exec_prefix, MAXPATHLEN);
joinpath(exec_prefix, L"lib/lib-dynload");
}
/* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */
if ((!pfound || !efound) && !Py_FrozenFlag)
fprintf(stderr,
"Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n");
/* Calculate size of return buffer.
*/
bufsz = 0;
if (_rtpypath) {
size_t s = mbstowcs(rtpypath, _rtpypath, sizeof(rtpypath)/sizeof(wchar_t));
if (s == (size_t)-1 || s >=sizeof(rtpypath))
/* XXX deal with errors more gracefully */
_rtpypath = NULL;
if (_rtpypath)
bufsz += wcslen(rtpypath) + 1;
}
defpath = _pythonpath;
prefixsz = wcslen(prefix) + 1;
while (1) {
wchar_t *delim = wcschr(defpath, DELIM);
if (defpath[0] != SEP)
/* Paths are relative to prefix */
bufsz += prefixsz;
if (delim)
bufsz += delim - defpath + 1;
else {
bufsz += wcslen(defpath) + 1;
break;
}
defpath = delim + 1;
}
bufsz += wcslen(zip_path) + 1;
bufsz += wcslen(exec_prefix) + 1;
/* This is the only malloc call in this file */
buf = (wchar_t *)PyMem_Malloc(bufsz*sizeof(wchar_t));
if (buf == NULL) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = L"" PYTHONPATH;
}
else {
/* Run-time value of $PYTHONPATH goes first */
if (_rtpypath) {
wcscpy(buf, rtpypath);
wcscat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next is the default zip path */
wcscat(buf, zip_path);
wcscat(buf, delimiter);
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.
*/
defpath = _pythonpath;
while (1) {
wchar_t *delim = wcschr(defpath, DELIM);
if (defpath[0] != SEP) {
wcscat(buf, prefix);
wcscat(buf, separator);
}
if (delim) {
size_t len = delim - defpath + 1;
size_t end = wcslen(buf) + len;
wcsncat(buf, defpath, len);
*(buf + end) = '\0';
}
else {
wcscat(buf, defpath);
break;
}
defpath = delim + 1;
}
wcscat(buf, delimiter);
/* Finally, on goes the directory for dynamic-load modules */
wcscat(buf, exec_prefix);
/* And publish the results */
module_search_path = buf;
}
/* Reduce prefix and exec_prefix to their essence,
* e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
* If we're loading relative to the build directory,
* return the compiled-in defaults instead.
*/
if (pfound > 0) {
reduce(prefix);
reduce(prefix);
/* The prefix is the root directory, but reduce() chopped
* off the "/". */
if (!prefix[0])
wcscpy(prefix, separator);
}
else
wcsncpy(prefix, _prefix, MAXPATHLEN);
if (efound > 0) {
reduce(exec_prefix);
reduce(exec_prefix);
reduce(exec_prefix);
if (!exec_prefix[0])
wcscpy(exec_prefix, separator);
}
else
wcsncpy(exec_prefix, _exec_prefix, MAXPATHLEN);
PyMem_Free(_pythonpath);
PyMem_Free(_prefix);
PyMem_Free(_exec_prefix);
}
static void
calculate_path(void)
{
extern char *Py_GetProgramName(void);
static char delimiter[2] = {DELIM, '\0'};
static char separator[2] = {SEP, '\0'};
char *pythonpath = PYTHONPATH;
char *rtpypath = Py_GETENV("PYTHONPATH");
char *home = Py_GetPythonHome();
char *path = getenv("PATH");
char *prog = Py_GetProgramName();
char argv0_path[MAXPATHLEN+1];
char zip_path[MAXPATHLEN+1];
int pfound, efound; /* 1 if found; -1 if found build directory */
char *buf;
size_t bufsz;
size_t prefixsz;
char *defpath = pythonpath;
#ifdef WITH_NEXT_FRAMEWORK
NSModule pythonModule;
#endif
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (strchr(prog, SEP))
strncpy(progpath, prog, MAXPATHLEN);
else if (path) {
while (1) {
char *delim = strchr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN)
len = MAXPATHLEN;
strncpy(progpath, path, len);
*(progpath + len) = '\0';
}
else
strncpy(progpath, path, MAXPATHLEN);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
if (progpath[0] != SEP)
absolutize(progpath);
strncpy(argv0_path, progpath, MAXPATHLEN);
argv0_path[MAXPATHLEN] = '\0';
#ifdef WITH_NEXT_FRAMEWORK
/* On Mac OS X we have a special case if we're running from a framework.
** This is because the python home should be set relative to the library,
** which is in the framework, not relative to the executable, which may
** be outside of the framework. Except when we're in the build directory...
*/
pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize"));
/* Use dylib functions to find out where the framework was loaded from */
buf = (char *)NSLibraryNameForModule(pythonModule);
if (buf != NULL) {
/* We're in a framework. */
/* See if we might be in the build directory. The framework in the
** build directory is incomplete, it only has the .dylib and a few
** needed symlinks, it doesn't have the Lib directories and such.
** If we're running with the framework from the build directory we must
** be running the interpreter in the build directory, so we use the
** build-directory-specific logic to find Lib and such.
*/
strncpy(argv0_path, buf, MAXPATHLEN);
reduce(argv0_path);
joinpath(argv0_path, lib_python);
joinpath(argv0_path, LANDMARK);
if (!ismodule(argv0_path)) {
/* We are in the build directory so use the name of the
executable - we know that the absolute path is passed */
strncpy(argv0_path, prog, MAXPATHLEN);
}
else {
/* Use the location of the library as the progpath */
strncpy(argv0_path, buf, MAXPATHLEN);
}
}
#endif
#if HAVE_READLINK
{
char tmpbuffer[MAXPATHLEN+1];
int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
while (linklen != -1) {
/* It's not null terminated! */
tmpbuffer[linklen] = '\0';
if (tmpbuffer[0] == SEP)
/* tmpbuffer should never be longer than MAXPATHLEN,
but extra check does not hurt */
strncpy(argv0_path, tmpbuffer, MAXPATHLEN);
else {
/* Interpret relative to progpath */
reduce(argv0_path);
joinpath(argv0_path, tmpbuffer);
}
linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
}
}
#endif /* HAVE_READLINK */
reduce(argv0_path);
/* At this point, argv0_path is guaranteed to be less than
MAXPATHLEN bytes long.
*/
if (!(pfound = search_for_prefix(argv0_path, home))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform independent libraries <prefix>\n");
strncpy(prefix, PREFIX, MAXPATHLEN);
joinpath(prefix, lib_python);
}
else
reduce(prefix);
strncpy(zip_path, prefix, MAXPATHLEN);
zip_path[MAXPATHLEN] = '\0';
if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */
reduce(zip_path);
reduce(zip_path);
}
else
strncpy(zip_path, PREFIX, MAXPATHLEN);
joinpath(zip_path, "lib/python00.zip");
bufsz = strlen(zip_path); /* Replace "00" with version */
zip_path[bufsz - 6] = VERSION[0];
zip_path[bufsz - 5] = VERSION[2];
if (!(efound = search_for_exec_prefix(argv0_path, home))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform dependent libraries <exec_prefix>\n");
strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
joinpath(exec_prefix, "lib/lib-dynload");
}
/* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */
if ((!pfound || !efound) && !Py_FrozenFlag)
fprintf(stderr,
"Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n");
/* Calculate size of return buffer.
*/
bufsz = 0;
if (rtpypath)
bufsz += strlen(rtpypath) + 1;
prefixsz = strlen(prefix) + 1;
while (1) {
char *delim = strchr(defpath, DELIM);
if (defpath[0] != SEP)
/* Paths are relative to prefix */
bufsz += prefixsz;
if (delim)
bufsz += delim - defpath + 1;
else {
bufsz += strlen(defpath) + 1;
break;
}
defpath = delim + 1;
}
bufsz += strlen(zip_path) + 1;
bufsz += strlen(exec_prefix) + 1;
/* This is the only malloc call in this file */
buf = PyMem_Malloc(bufsz);
if (buf == NULL) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = PYTHONPATH;
}
else {
/* Run-time value of $PYTHONPATH goes first */
if (rtpypath) {
strcpy(buf, rtpypath);
strcat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next is the default zip path */
strcat(buf, zip_path);
strcat(buf, delimiter);
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.
*/
defpath = pythonpath;
while (1) {
char *delim = strchr(defpath, DELIM);
if (defpath[0] != SEP) {
strcat(buf, prefix);
strcat(buf, separator);
}
if (delim) {
size_t len = delim - defpath + 1;
size_t end = strlen(buf) + len;
strncat(buf, defpath, len);
*(buf + end) = '\0';
}
else {
strcat(buf, defpath);
break;
}
defpath = delim + 1;
}
strcat(buf, delimiter);
/* Finally, on goes the directory for dynamic-load modules */
strcat(buf, exec_prefix);
/* And publish the results */
module_search_path = buf;
}
/* Reduce prefix and exec_prefix to their essence,
* e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
* If we're loading relative to the build directory,
* return the compiled-in defaults instead.
*/
if (pfound > 0) {
reduce(prefix);
reduce(prefix);
}
else
strncpy(prefix, PREFIX, MAXPATHLEN);
if (efound > 0) {
reduce(exec_prefix);
reduce(exec_prefix);
reduce(exec_prefix);
}
else
strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
}
static void
calculate_path(void)
{
extern char *Py_GetProgramName(void);
static char delimiter[2] = {DELIM, '\0'};
static char separator[2] = {SEP, '\0'};
char *pythonpath = PYTHONPATH;
char *rtpypath = getenv("PYTHONPATH");
char *home = Py_GetPythonHome();
char *path = getenv("PATH");
char *prog = Py_GetProgramName();
char argv0_path[MAXPATHLEN+1];
int pfound, efound; /* 1 if found; -1 if found build directory */
char *buf;
size_t bufsz;
size_t prefixsz;
char *defpath = pythonpath;
#ifdef WITH_NEXT_FRAMEWORK
NSModule pythonModule;
#endif
#ifdef WITH_NEXT_FRAMEWORK
/* XXX Need to check this code for buffer overflows */
pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize"));
/* Use dylib functions to find out where the framework was loaded from */
buf = NSLibraryNameForModule(pythonModule);
if (buf != NULL) {
/* We're in a framework. */
strcpy(progpath, buf);
/* Frameworks have support for versioning */
strcpy(lib_python, "lib");
}
else {
/* If we're not in a framework, fall back to the old way
(even though NSNameOfModule() probably does the same thing.) */
#endif
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (strchr(prog, SEP))
strncpy(progpath, prog, MAXPATHLEN);
else if (path) {
int bufspace = MAXPATHLEN;
while (1) {
char *delim = strchr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > bufspace)
len = bufspace;
strncpy(progpath, path, len);
*(progpath + len) = '\0';
bufspace -= len;
}
else
strncpy(progpath, path, bufspace);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
#ifdef WITH_NEXT_FRAMEWORK
}
#endif
strncpy(argv0_path, progpath, MAXPATHLEN);
#if HAVE_READLINK
{
char tmpbuffer[MAXPATHLEN+1];
int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
while (linklen != -1) {
/* It's not null terminated! */
tmpbuffer[linklen] = '\0';
if (tmpbuffer[0] == SEP)
/* tmpbuffer should never be longer than MAXPATHLEN,
but extra check does not hurt */
strncpy(argv0_path, tmpbuffer, MAXPATHLEN);
else {
/* Interpret relative to progpath */
reduce(argv0_path);
joinpath(argv0_path, tmpbuffer);
}
linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
}
}
#endif /* HAVE_READLINK */
reduce(argv0_path);
/* At this point, argv0_path is guaranteed to be less than
MAXPATHLEN bytes long.
*/
if (!(pfound = search_for_prefix(argv0_path, home))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform independent libraries <prefix>\n");
strncpy(prefix, PREFIX, MAXPATHLEN);
joinpath(prefix, lib_python);
}
else
reduce(prefix);
if (!(efound = search_for_exec_prefix(argv0_path, home))) {
if (!Py_FrozenFlag)
fprintf(stderr,
"Could not find platform dependent libraries <exec_prefix>\n");
strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
joinpath(exec_prefix, "lib/lib-dynload");
}
/* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */
if ((!pfound || !efound) && !Py_FrozenFlag)
fprintf(stderr,
"Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n");
/* Calculate size of return buffer.
*/
bufsz = 0;
if (rtpypath)
bufsz += strlen(rtpypath) + 1;
prefixsz = strlen(prefix) + 1;
while (1) {
char *delim = strchr(defpath, DELIM);
if (defpath[0] != SEP)
/* Paths are relative to prefix */
bufsz += prefixsz;
if (delim)
bufsz += delim - defpath + 1;
else {
bufsz += strlen(defpath) + 1;
break;
}
defpath = delim + 1;
}
bufsz += strlen(exec_prefix) + 1;
/* This is the only malloc call in this file */
buf = PyMem_Malloc(bufsz);
if (buf == NULL) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = PYTHONPATH;
}
else {
/* Run-time value of $PYTHONPATH goes first */
if (rtpypath) {
strcpy(buf, rtpypath);
strcat(buf, delimiter);
}
else
buf[0] = '\0';
/* Next goes merge of compile-time $PYTHONPATH with
* dynamically located prefix.
*/
defpath = pythonpath;
while (1) {
char *delim = strchr(defpath, DELIM);
if (defpath[0] != SEP) {
strcat(buf, prefix);
strcat(buf, separator);
}
if (delim) {
size_t len = delim - defpath + 1;
size_t end = strlen(buf) + len;
strncat(buf, defpath, len);
*(buf + end) = '\0';
}
else {
strcat(buf, defpath);
break;
}
defpath = delim + 1;
}
strcat(buf, delimiter);
/* Finally, on goes the directory for dynamic-load modules */
strcat(buf, exec_prefix);
/* And publish the results */
module_search_path = buf;
}
/* Reduce prefix and exec_prefix to their essence,
* e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
* If we're loading relative to the build directory,
* return the compiled-in defaults instead.
*/
if (pfound > 0) {
reduce(prefix);
reduce(prefix);
}
else
strncpy(prefix, PREFIX, MAXPATHLEN);
if (efound > 0) {
reduce(exec_prefix);
reduce(exec_prefix);
reduce(exec_prefix);
}
else
strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
}
static void calculate_path (void) {
extern char *Py_GetProgramName(void);
static char delimiter[2] = {DELIM, '\0'};
char *rtpypath = Py_GETENV("PYTHONPATH");
char *path = getenv("PATH");
char *prog = Py_GetProgramName();
static char proc_exe_path[] = "/proc/self/exe";
char *xzip_path;
char *buf;
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (strchr(prog, SEP))
strncpy(progpath, prog, MAXPATHLEN);
else if (path) {
while (1) {
char *delim = strchr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN)
len = MAXPATHLEN;
strncpy(progpath, path, len);
*(progpath + len) = '\0';
}
else
strncpy(progpath, path, MAXPATHLEN);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
path = delim + 1;
}
}
else
progpath[0] = '\0';
if (progpath[0] != SEP && progpath[0] != '\0')
absolutize(progpath);
/**** pts ****/
{ int fd = open(proc_exe_path, O_RDONLY);
/* fprintf(stderr, "progpath=(%s)\n", progpath); */
if (fd < 0) { /* If /proc is not avaialbe, e.g. in chroot */
xzip_path = progpath; /* Use argv[0] for the .zip filename */
} else {
xzip_path = proc_exe_path;
close(fd);
}
}
/**** pts ****/
if (rtpypath == NULL || rtpypath[0] == '\0') {
module_search_path = xzip_path;
} else if (NULL == (buf = (char *)PyMem_Malloc(
2 + strlen(xzip_path) + strlen(rtpypath)))) {
/* We can't exit, so print a warning and limp along */
fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
fprintf(stderr, "Using default static PYTHONPATH.\n");
module_search_path = xzip_path;
} else {
strcpy(buf, rtpypath);
strcat(buf, delimiter);
strcat(buf, xzip_path);
module_search_path = buf;
}
}
static _PyInitError
calculate_program_full_path(const _PyCoreConfig *core_config,
PyCalculatePath *calculate, _PyPathConfig *config)
{
wchar_t program_full_path[MAXPATHLEN+1];
memset(program_full_path, 0, sizeof(program_full_path));
#ifdef __APPLE__
#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
uint32_t nsexeclength = MAXPATHLEN;
#else
unsigned long nsexeclength = MAXPATHLEN;
#endif
char execpath[MAXPATHLEN+1];
#endif
/* If there is no slash in the argv0 path, then we have to
* assume python is on the user's $PATH, since there's no
* other way to find a directory to start the search from. If
* $PATH isn't exported, you lose.
*/
if (wcschr(core_config->program_name, SEP)) {
wcsncpy(program_full_path, core_config->program_name, MAXPATHLEN);
}
#ifdef __APPLE__
/* On Mac OS X, if a script uses an interpreter of the form
* "#!/opt/python2.3/bin/python", the kernel only passes "python"
* as argv[0], which falls through to the $PATH search below.
* If /opt/python2.3/bin isn't in your path, or is near the end,
* this algorithm may incorrectly find /usr/bin/python. To work
* around this, we can use _NSGetExecutablePath to get a better
* hint of what the intended interpreter was, although this
* will fail if a relative path was used. but in that case,
* absolutize() should help us out below
*/
else if(0 == _NSGetExecutablePath(execpath, &nsexeclength) &&
execpath[0] == SEP)
{
size_t len;
wchar_t *path = Py_DecodeLocale(execpath, &len);
if (path == NULL) {
return DECODE_LOCALE_ERR("executable path", len);
}
wcsncpy(program_full_path, path, MAXPATHLEN);
PyMem_RawFree(path);
}
#endif /* __APPLE__ */
else if (calculate->path_env) {
wchar_t *path = calculate->path_env;
while (1) {
wchar_t *delim = wcschr(path, DELIM);
if (delim) {
size_t len = delim - path;
if (len > MAXPATHLEN) {
len = MAXPATHLEN;
}
wcsncpy(program_full_path, path, len);
program_full_path[len] = '\0';
}
else {
wcsncpy(program_full_path, path, MAXPATHLEN);
}
joinpath(program_full_path, core_config->program_name);
if (isxfile(program_full_path)) {
break;
}
if (!delim) {
program_full_path[0] = L'\0';
break;
}
path = delim + 1;
}
}
else {
program_full_path[0] = '\0';
}
if (program_full_path[0] != SEP && program_full_path[0] != '\0') {
absolutize(program_full_path);
}
config->program_full_path = _PyMem_RawWcsdup(program_full_path);
if (config->program_full_path == NULL) {
return _Py_INIT_NO_MEMORY();
}
return _Py_INIT_OK();
}
static void
calculate_path(void) {
const char *prog = PI_GetProgramName(); /* use Py_SetProgramName(argv[0]) before Py_Initialize() */
char argv0_path[MAXPATHLEN+1];
char *epath;
char *path = NULL;
char *ppath = NULL;
#if HAVE_READLINK
int numchars;
#endif
if (strchr(prog, SEP))
strcpy(progpath, prog);
else {
#if HAVE_READLINK
sprintf(argv0_path, "/proc/%d/exe", getpid());
numchars = readlink(argv0_path, progpath, MAXPATHLEN);
if (numchars > 0)
progpath[numchars] = '\0';
else {
#endif
epath = getenv("PATH");
if (epath)
path = malloc(strlen(epath)+3);
if (path) {
strcpy(path, ".:");
strcat(path, epath);
ppath = path;
while (1) {
char *delim = strchr(ppath, DELIM);
if (delim) {
int len = delim - ppath;
strncpy(progpath, ppath, len);
*(progpath + len) = '\0';
} else
strcpy(progpath, ppath);
joinpath(progpath, prog);
if (isxfile(progpath))
break;
if (!delim) {
progpath[0] = '\0';
break;
}
ppath = delim + 1;
}
free(path);
} else
progpath[0] = '\0';
#if HAVE_READLINK
}
#endif
}
/* at this point progpath includes the executable */
strcpy(argv0_path, progpath);
#if HAVE_READLINK
{
char tmpbuffer[MAXPATHLEN+1];
int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
while (linklen != -1) {
/* It's not null terminated! */
tmpbuffer[linklen] = '\0';
if (tmpbuffer[0] == SEP)
strcpy(argv0_path, tmpbuffer);
else {
/* Interpret relative to progpath */
reduce(argv0_path);
joinpath(argv0_path, tmpbuffer);
}
linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
}
strcpy(progpath, argv0_path);
}
#endif /* HAVE_READLINK */
reduce(argv0_path);
/* now argv0_path is the directory of the executable */
strcpy(prefix, argv0_path);
exec_prefix = prefix;
module_search_path = malloc(strlen(prefix)+1);
strcpy(module_search_path, prefix);
}
