cpython-lru_cache-weakref: Modules/getpath.c annotate

annotate Modules/getpath.c @ 19283:b865cd5c1925 legacy-trunk

Added comments before recently added/assigned slots in the type object, so the backward compatibility issues will be easier to understand. I only added comments indicating additions and assignments back to Python 2.0.

author	Fred Drake <fdrake@acm.org>
date	Wed, 15 Aug 2001 18:32:33 +0000
parents	ca7dbacbbe18
children	416f0bc228e8

rev	line source
3621 f158edccc72c grand renaming; added copyright to some files Guido van Rossum <guido@python.org> parents: 3416 diff changeset	1 /* Return the initial module search path. */
f158edccc72c grand renaming; added copyright to some files Guido van Rossum <guido@python.org> parents: 3416 diff changeset	2
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	3 #include "Python.h"
f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	4 #include "osdefs.h"
f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	5
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	6 #include <sys/types.h>
5698 ba860dc0a585 Use string.h, not strings.h Guido van Rossum <guido@python.org> parents: 5568 diff changeset	7 #include <string.h>
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	8
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	9 #if HAVE_UNISTD_H
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	10 #include <unistd.h>
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	11 #endif /* HAVE_UNISTD_H */
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	12
9970 8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	13 #ifdef WITH_NEXT_FRAMEWORK
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	14 #include <mach-o/dyld.h>
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	15 #endif
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	16
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	17 /* Search in some common locations for the associated Python libraries.
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	18 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	19 * Two directories must be found, the platform independent directory
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	20 * (prefix), containing the common .py and .pyc files, and the platform
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	21 * dependent directory (exec_prefix), containing the shared library
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	22 * modules. Note that prefix and exec_prefix can be the same directory,
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	23 * but for some installations, they are different.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	24 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	25 * Py_GetPath() carries out separate searches for prefix and exec_prefix.
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	26 * Each search tries a number of different locations until a ``landmark''
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	27 * file or directory is found. If no prefix or exec_prefix is found, a
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	28 * warning message is issued and the preprocessor defined PREFIX and
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	29 * EXEC_PREFIX are used (even though they will not work); python carries on
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	30 * as best as is possible, but most imports will fail.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	31 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	32 * Before any searches are done, the location of the executable is
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	33 * determined. If argv[0] has one or more slashs in it, it is used
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	34 * unchanged. Otherwise, it must have been invoked from the shell's path,
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	35 * so we search $PATH for the named executable and use that. If the
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	36 * executable was not found on $PATH (or there was no $PATH environment
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	37 * variable), the original argv[0] string is used.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	38 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	39 * Next, the executable location is examined to see if it is a symbolic
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	40 * link. If so, the link is chased (correctly interpreting a relative
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	41 * pathname if one is found) and the directory of the link target is used.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	42 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	43 * Finally, argv0_path is set to the directory containing the executable
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	44 * (i.e. the last component is stripped).
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	45 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	46 * With argv0_path in hand, we perform a number of steps. The same steps
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	47 * are performed for prefix and for exec_prefix, but with a different
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	48 * landmark.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	49 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	50 * Step 1. Are we running python out of the build directory? This is
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	51 * checked by looking for a different kind of landmark relative to
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	52 * argv0_path. For prefix, the landmark's path is derived from the VPATH
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	53 * preprocessor variable (taking into account that its value is almost, but
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	54 * not quite, what we need). For exec_prefix, the landmark is
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	55 * Modules/Setup. If the landmark is found, we're done.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	56 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	57 * For the remaining steps, the prefix landmark will always be
12775 8e2b35d386aa Patch from M.-A. Lemburg: Jeremy Hylton <jeremy@alum.mit.edu> parents: 12576 diff changeset	58 * lib/python$VERSION/os.py and the exec_prefix will always be
6498 4981fd2b3211 Change sharedmodules to lib-dynload. Guido van Rossum <guido@python.org> parents: 6121 diff changeset	59 * lib/python$VERSION/lib-dynload, where $VERSION is Python's version
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	60 * number as supplied by the Makefile. Note that this means that no more
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	61 * build directory checking is performed; if the first step did not find
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	62 * the landmarks, the assumption is that python is running from an
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	63 * installed setup.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	64 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	65 * Step 2. See if the $PYTHONHOME environment variable points to the
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	66 * installed location of the Python libraries. If $PYTHONHOME is set, then
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	67 * it points to prefix and exec_prefix. $PYTHONHOME can be a single
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	68 * directory, which is used for both, or the prefix and exec_prefix
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	69 * directories separated by a colon.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	70 *
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	71 * Step 3. Try to find prefix and exec_prefix relative to argv0_path,
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	72 * backtracking up the path until it is exhausted. This is the most common
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	73 * step to succeed. Note that if prefix and exec_prefix are different,
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	74 * exec_prefix is more likely to be found; however if exec_prefix is a
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	75 * subdirectory of prefix, both will be found.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	76 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	77 * Step 4. Search the directories pointed to by the preprocessor variables
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	78 * PREFIX and EXEC_PREFIX. These are supplied by the Makefile but can be
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	79 * passed in as options to the configure script.
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	80 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	81 * That's it!
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	82 *
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	83 * Well, almost. Once we have determined prefix and exec_prefix, the
13620 5b727ab37092 Spelling fixes supplied by Rob W. W. Hooft. All these are fixes in either Thomas Wouters <thomas@python.org> parents: 13428 diff changeset	84 * preprocessor variable PYTHONPATH is used to construct a path. Each
5316 c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	85 * relative path on PYTHONPATH is prefixed with prefix. Then the directory
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	86 * containing the shared library modules is appended. The environment
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	87 * variable $PYTHONPATH is inserted in front of it all. Finally, the
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	88 * prefix and exec_prefix globals are tweaked so they reflect the values
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	89 * expected by other code, by stripping the "lib/python$VERSION/..." stuff
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	90 * off. If either points to the build directory, the globals are reset to
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	91 * the corresponding preprocessor variables (so sys.prefix will reflect the
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	92 * installation location, even though sys.path points into the build
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	93 * directory). This seems to make more sense given that currently the only
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	94 * known use of sys.prefix and sys.exec_prefix is for the ILU installation
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	95 * process to find the installed Python tree.
c8e24c4b8bfb Removed two unused static function: string_addsep() and Barry Warsaw <barry@python.org> parents: 5300 diff changeset	96 */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	97
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	98 #ifndef VERSION
16147 fbf8abec93d1 Clean up some comments and the default VERSION. Guido van Rossum <guido@python.org> parents: 14907 diff changeset	99 #define VERSION "2.1"
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	100 #endif
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	101
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	102 #ifndef VPATH
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	103 #define VPATH "."
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	104 #endif
f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	105
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	106 #ifndef PREFIX
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	107 #define PREFIX "/usr/local"
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	108 #endif
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	109
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	110 #ifndef EXEC_PREFIX
3878 4286910080a9 Don't have "." in the default path. Guido van Rossum <guido@python.org> parents: 3674 diff changeset	111 #define EXEC_PREFIX PREFIX
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	112 #endif
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	113
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	114 #ifndef PYTHONPATH
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	115 #define PYTHONPATH PREFIX "/lib/python" VERSION ":" \
6498 4981fd2b3211 Change sharedmodules to lib-dynload. Guido van Rossum <guido@python.org> parents: 6121 diff changeset	116 EXEC_PREFIX "/lib/python" VERSION "/lib-dynload"
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	117 #endif
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	118
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	119 #ifndef LANDMARK
12775 8e2b35d386aa Patch from M.-A. Lemburg: Jeremy Hylton <jeremy@alum.mit.edu> parents: 12576 diff changeset	120 #define LANDMARK "os.py"
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	121 #endif
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	122
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	123 static char prefix[MAXPATHLEN+1];
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	124 static char exec_prefix[MAXPATHLEN+1];
5568 139ab21d2629 Make delimiter and separator static for K&R C. Guido van Rossum <guido@python.org> parents: 5500 diff changeset	125 static char progpath[MAXPATHLEN+1];
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	126 static char *module_search_path = NULL;
14907 d01394b0aa69 Minor ANSIfication: lib_python no longer needs to be initialized Fred Drake <fdrake@acm.org> parents: 14898 diff changeset	127 static char lib_python[] = "lib/python" VERSION;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	128
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	129 static void
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	130 reduce(char *dir)
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	131 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	132 size_t i = strlen(dir);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	133 while (i > 0 && dir[i] != SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	134 --i;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	135 dir[i] = '\0';
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	136 }
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	137
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	138
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	139 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	140 isfile(char filename) / Is file, not directory */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	141 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	142 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	143 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	144 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	145 if (!S_ISREG(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	146 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	147 return 1;
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	148 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	149
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	150
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	151 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	152 ismodule(char filename) / Is module -- check for .pyc/.pyo too */
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	153 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	154 if (isfile(filename))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	155 return 1;
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	156
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	157 /* Check for the compiled version of prefix. */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	158 if (strlen(filename) < MAXPATHLEN) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	159 strcat(filename, Py_OptimizeFlag ? "o" : "c");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	160 if (isfile(filename))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	161 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	162 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	163 return 0;
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	164 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	165
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	166
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	167 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	168 isxfile(char filename) / Is executable file */
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	169 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	170 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	171 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	172 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	173 if (!S_ISREG(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	174 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	175 if ((buf.st_mode & 0111) == 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	176 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	177 return 1;
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	178 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	179
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	180
419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	181 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	182 isdir(char filename) / Is directory */
7117 419dca2b3a61 Instead of a single exists(), differentiate between files, modules, Guido van Rossum <guido@python.org> parents: 6823 diff changeset	183 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	184 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	185 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	186 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	187 if (!S_ISDIR(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	188 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	189 return 1;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	190 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	191
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	192
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	193 /* joinpath requires that any buffer argument passed to it has at
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	194 least MAXPATHLEN + 1 bytes allocated. If this requirement is met,
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	195 it guarantees that it will never overflow the buffer. If stuff
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	196 is too long, buffer will contain a truncated copy of stuff.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	197 */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	198 static void
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	199 joinpath(char buffer, char stuff)
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	200 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	201 size_t n, k;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	202 if (stuff[0] == SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	203 n = 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	204 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	205 n = strlen(buffer);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	206 if (n > 0 && buffer[n-1] != SEP && n < MAXPATHLEN)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	207 buffer[n++] = SEP;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	208 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	209 k = strlen(stuff);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	210 if (n + k > MAXPATHLEN)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	211 k = MAXPATHLEN - n;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	212 strncpy(buffer+n, stuff, k);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	213 buffer[n+k] = '\0';
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	214 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	215
16147 fbf8abec93d1 Clean up some comments and the default VERSION. Guido van Rossum <guido@python.org> parents: 14907 diff changeset	216 /* init_path_from_argv0 requires that path be allocated at least
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	217 MAXPATHLEN + 1 bytes and that argv0_path be no more than MAXPATHLEN
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	218 bytes.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	219 */
14845 88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	220 static void
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	221 init_path_from_argv0(char path, char argv0_path)
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	222 {
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	223 if (argv0_path[0] == '/')
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	224 strcpy(path, argv0_path);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	225 else if (argv0_path[0] == '.') {
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	226 getcwd(path, MAXPATHLEN);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	227 if (argv0_path[1] == '/')
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	228 joinpath(path, argv0_path + 2);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	229 else
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	230 joinpath(path, argv0_path);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	231 }
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	232 else {
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	233 getcwd(path, MAXPATHLEN);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	234 joinpath(path, argv0_path);
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	235 }
88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	236 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	237
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	238 /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	239 bytes long.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	240 */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	241 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	242 search_for_prefix(char argv0_path, char home)
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	243 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	244 size_t n;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	245 char *vpath;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	246
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	247 /* If PYTHONHOME is set, we believe it unconditionally */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	248 if (home) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	249 char *delim;
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	250 strncpy(prefix, home, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	251 delim = strchr(prefix, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	252 if (delim)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	253 *delim = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	254 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	255 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	256 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	257 }
12775 8e2b35d386aa Patch from M.-A. Lemburg: Jeremy Hylton <jeremy@alum.mit.edu> parents: 12576 diff changeset	258
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	259 /* Check to see if argv[0] is in the build directory */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	260 strcpy(prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	261 joinpath(prefix, "Modules/Setup");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	262 if (isfile(prefix)) {
16222 a0e46c3be63e Build now happens in toplevel directory, not Modules. Don't monkey with Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 16147 diff changeset	263 /* Check VPATH to see if argv0_path is in the build directory. */
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	264 vpath = VPATH;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	265 strcpy(prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	266 joinpath(prefix, vpath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	267 joinpath(prefix, "Lib");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	268 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	269 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	270 return -1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	271 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	272
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	273 /* Search from argv0_path, until root is found */
14845 88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	274 init_path_from_argv0(prefix, argv0_path);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	275 do {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	276 n = strlen(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	277 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	278 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	279 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	280 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	281 prefix[n] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	282 reduce(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	283 } while (prefix[0]);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	284
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	285 /* Look at configure's PREFIX */
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	286 strncpy(prefix, PREFIX, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	287 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	288 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	289 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	290 return 1;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	291
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	292 /* Fail */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	293 return 0;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	294 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	295
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	296
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	297 /* search_for_exec_prefix requires that argv0_path be no more than
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	298 MAXPATHLEN bytes long.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	299 */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	300 static int
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	301 search_for_exec_prefix(char argv0_path, char home)
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	302 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	303 size_t n;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	304
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	305 /* If PYTHONHOME is set, we believe it unconditionally */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	306 if (home) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	307 char *delim;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	308 delim = strchr(home, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	309 if (delim)
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	310 strncpy(exec_prefix, delim+1, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	311 else
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	312 strncpy(exec_prefix, home, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	313 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	314 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	315 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	316 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	317
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	318 /* Check to see if argv[0] is in the build directory */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	319 strcpy(exec_prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	320 joinpath(exec_prefix, "Modules/Setup");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	321 if (isfile(exec_prefix)) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	322 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	323 return -1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	324 }
12775 8e2b35d386aa Patch from M.-A. Lemburg: Jeremy Hylton <jeremy@alum.mit.edu> parents: 12576 diff changeset	325
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	326 /* Search from argv0_path, until root is found */
14845 88d3a8974409 fix bug #114290: when interpreter's argv[0] has a relative path make Jeremy Hylton <jeremy@alum.mit.edu> parents: 14375 diff changeset	327 init_path_from_argv0(exec_prefix, argv0_path);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	328 do {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	329 n = strlen(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	330 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	331 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	332 if (isdir(exec_prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	333 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	334 exec_prefix[n] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	335 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	336 } while (exec_prefix[0]);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	337
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	338 /* Look at configure's EXEC_PREFIX */
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	339 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	340 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	341 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	342 if (isdir(exec_prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	343 return 1;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	344
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	345 /* Fail */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	346 return 0;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	347 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	348
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	349
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	350 static void
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13620 diff changeset	351 calculate_path(void)
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	352 {
13667 a6c7bfdd6777 Even more ANSIfication: fix as many function pointers and declarations as Thomas Wouters <thomas@python.org> parents: 13651 diff changeset	353 extern char *Py_GetProgramName(void);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	354
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	355 static char delimiter[2] = {DELIM, '\0'};
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	356 static char separator[2] = {SEP, '\0'};
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	357 char *pythonpath = PYTHONPATH;
18808 a8b1acc7a21f Add -E command line switch (ignore environment variables like PYTHONHOME Neil Schemenauer <nascheme@enme.ucalgary.ca> parents: 16222 diff changeset	358 char *rtpypath = Py_GETENV("PYTHONPATH");
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	359 char *home = Py_GetPythonHome();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	360 char *path = getenv("PATH");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	361 char *prog = Py_GetProgramName();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	362 char argv0_path[MAXPATHLEN+1];
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	363 int pfound, efound; /* 1 if found; -1 if found build directory */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	364 char *buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	365 size_t bufsz;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	366 size_t prefixsz;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	367 char *defpath = pythonpath;
9970 8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	368 #ifdef WITH_NEXT_FRAMEWORK
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	369 NSModule pythonModule;
9970 8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	370 #endif
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	371
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	372 #ifdef WITH_NEXT_FRAMEWORK
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	373 pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize"));
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	374 /* Use dylib functions to find out where the framework was loaded from */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	375 buf = NSLibraryNameForModule(pythonModule);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	376 if (buf != NULL) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	377 /* We're in a framework. */
19261 ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	378 /* See if we might be in the build directory. The framework in the
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	379 ** build directory is incomplete, it only has the .dylib and a few
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	380 ** needed symlinks, it doesn't have the Lib directories and such.
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	381 ** If we're running with the framework from the build directory we must
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	382 ** be running the interpreter in the build directory, so we use the
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	383 ** build-directory-specific logic to find Lib and such.
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	384 */
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	385 strncpy(argv0_path, buf, MAXPATHLEN);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	386 reduce(argv0_path);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	387 joinpath(argv0_path, lib_python);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	388 joinpath(argv0_path, LANDMARK);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	389 if (!ismodule(argv0_path)) {
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	390 /* We are in the build directory so use the name of the
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	391 executable - we know that the absolute path is passed */
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	392 strncpy(progpath, prog, MAXPATHLEN);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	393 }
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	394 else {
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	395 /* Use the location of the library as the progpath */
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	396 strncpy(progpath, buf, MAXPATHLEN);
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python Jack Jansen <jack.jansen@cwi.nl> parents: 19061 diff changeset	397 }
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	398 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	399 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	400 /* If we're not in a framework, fall back to the old way
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	401 (even though NSNameOfModule() probably does the same thing.) */
9970 8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	402 #endif
8efa37a770c6 Patches by William Lewis for Nextstep descendants. Guido van Rossum <guido@python.org> parents: 8203 diff changeset	403
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	404 /* If there is no slash in the argv0 path, then we have to
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	405 * assume python is on the user's $PATH, since there's no
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	406 * other way to find a directory to start the search from. If
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	407 * $PATH isn't exported, you lose.
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	408 */
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	409 if (strchr(prog, SEP))
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	410 strncpy(progpath, prog, MAXPATHLEN);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	411 else if (path) {
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	412 int bufspace = MAXPATHLEN;
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	413 while (1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	414 char *delim = strchr(path, DELIM);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	415
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	416 if (delim) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	417 size_t len = delim - path;
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	418 if (len > bufspace)
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	419 len = bufspace;
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	420 strncpy(progpath, path, len);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	421 *(progpath + len) = '\0';
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	422 bufspace -= len;
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	423 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	424 else
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	425 strncpy(progpath, path, bufspace);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	426
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	427 joinpath(progpath, prog);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	428 if (isxfile(progpath))
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	429 break;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	430
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	431 if (!delim) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	432 progpath[0] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	433 break;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	434 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	435 path = delim + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	436 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	437 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	438 else
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	439 progpath[0] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	440 #ifdef WITH_NEXT_FRAMEWORK
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	441 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	442 #endif
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	443
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	444 strncpy(argv0_path, progpath, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	445
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	446 #if HAVE_READLINK
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	447 {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	448 char tmpbuffer[MAXPATHLEN+1];
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	449 int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	450 while (linklen != -1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	451 /* It's not null terminated! */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	452 tmpbuffer[linklen] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	453 if (tmpbuffer[0] == SEP)
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	454 /* tmpbuffer should never be longer than MAXPATHLEN,
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	455 but extra check does not hurt */
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	456 strncpy(argv0_path, tmpbuffer, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	457 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	458 /* Interpret relative to progpath */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	459 reduce(argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	460 joinpath(argv0_path, tmpbuffer);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	461 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	462 linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	463 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	464 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	465 #endif /* HAVE_READLINK */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	466
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	467 reduce(argv0_path);
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	468 /* At this point, argv0_path is guaranteed to be less than
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	469 MAXPATHLEN bytes long.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	470 */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	471
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	472 if (!(pfound = search_for_prefix(argv0_path, home))) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	473 if (!Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	474 fprintf(stderr,
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	475 "Could not find platform independent libraries <prefix>\n");
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	476 strncpy(prefix, PREFIX, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	477 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	478 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	479 else
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	480 reduce(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	481
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	482 if (!(efound = search_for_exec_prefix(argv0_path, home))) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	483 if (!Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	484 fprintf(stderr,
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	485 "Could not find platform dependent libraries <exec_prefix>\n");
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	486 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	487 joinpath(exec_prefix, "lib/lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	488 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	489 /* If we found EXEC_PREFIX do not reduce it! (Yet.) */
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	490
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	491 if ((!pfound \|\| !efound) && !Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	492 fprintf(stderr,
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	493 "Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	494
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	495 /* Calculate size of return buffer.
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	496 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	497 bufsz = 0;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	498
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	499 if (rtpypath)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	500 bufsz += strlen(rtpypath) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	501
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	502 prefixsz = strlen(prefix) + 1;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	503
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	504 while (1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	505 char *delim = strchr(defpath, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	506
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	507 if (defpath[0] != SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	508 /* Paths are relative to prefix */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	509 bufsz += prefixsz;
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	510
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	511 if (delim)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	512 bufsz += delim - defpath + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	513 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	514 bufsz += strlen(defpath) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	515 break;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	516 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	517 defpath = delim + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	518 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	519
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	520 bufsz += strlen(exec_prefix) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	521
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	522 /* This is the only malloc call in this file */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	523 buf = PyMem_Malloc(bufsz);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	524
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	525 if (buf == NULL) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	526 /* We can't exit, so print a warning and limp along */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	527 fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	528 fprintf(stderr, "Using default static PYTHONPATH.\n");
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	529 module_search_path = PYTHONPATH;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	530 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	531 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	532 /* Run-time value of $PYTHONPATH goes first */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	533 if (rtpypath) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	534 strcpy(buf, rtpypath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	535 strcat(buf, delimiter);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	536 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	537 else
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	538 buf[0] = '\0';
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	539
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	540 /* Next goes merge of compile-time $PYTHONPATH with
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	541 * dynamically located prefix.
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	542 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	543 defpath = pythonpath;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	544 while (1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	545 char *delim = strchr(defpath, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	546
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	547 if (defpath[0] != SEP) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	548 strcat(buf, prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	549 strcat(buf, separator);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	550 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	551
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	552 if (delim) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	553 size_t len = delim - defpath + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	554 size_t end = strlen(buf) + len;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	555 strncat(buf, defpath, len);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	556 *(buf + end) = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	557 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	558 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	559 strcat(buf, defpath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	560 break;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	561 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	562 defpath = delim + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	563 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	564 strcat(buf, delimiter);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	565
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	566 /* Finally, on goes the directory for dynamic-load modules */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	567 strcat(buf, exec_prefix);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	568
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	569 /* And publish the results */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	570 module_search_path = buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	571 }
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	572
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	573 /* Reduce prefix and exec_prefix to their essence,
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	574 * e.g. /usr/local/lib/python1.5 is reduced to /usr/local.
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	575 * If we're loading relative to the build directory,
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	576 * return the compiled-in defaults instead.
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	577 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	578 if (pfound > 0) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	579 reduce(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	580 reduce(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	581 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	582 else
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	583 strncpy(prefix, PREFIX, MAXPATHLEN);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	584
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	585 if (efound > 0) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	586 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	587 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	588 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	589 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	590 else
14898 4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used Jeremy Hylton <jeremy@alum.mit.edu> parents: 14845 diff changeset	591 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN);
5300 e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	592 }
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	593
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	594
e77942562dd3 Completely revamped the way the default path is constructed. Guido van Rossum <guido@python.org> parents: 4503 diff changeset	595 /* External interface */
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	596
f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	597 char *
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13620 diff changeset	598 Py_GetPath(void)
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	599 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	600 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	601 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	602 return module_search_path;
2896 f0d9f800a4aa Initial revision Guido van Rossum <guido@python.org> parents: diff changeset	603 }
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	604
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	605 char *
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13620 diff changeset	606 Py_GetPrefix(void)
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	607 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	608 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	609 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	610 return prefix;
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	611 }
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	612
3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	613 char *
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13620 diff changeset	614 Py_GetExecPrefix(void)
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	615 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	616 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	617 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	618 return exec_prefix;
3674 3eaf2c673a11 provide access to $(exec_)prefix Guido van Rossum <guido@python.org> parents: 3621 diff changeset	619 }
5568 139ab21d2629 Make delimiter and separator static for K&R C. Guido van Rossum <guido@python.org> parents: 5500 diff changeset	620
139ab21d2629 Make delimiter and separator static for K&R C. Guido van Rossum <guido@python.org> parents: 5500 diff changeset	621 char *
13651 8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)', Thomas Wouters <thomas@python.org> parents: 13620 diff changeset	622 Py_GetProgramFullPath(void)
5568 139ab21d2629 Make delimiter and separator static for K&R C. Guido van Rossum <guido@python.org> parents: 5500 diff changeset	623 {
13428 0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	624 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	625 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation. Fred Drake <fdrake@acm.org> parents: 13256 diff changeset	626 return progpath;
5568 139ab21d2629 Make delimiter and separator static for K&R C. Guido van Rossum <guido@python.org> parents: 5500 diff changeset	627 }

Mercurial > cpython-lru_cache-weakref

annotate Modules/getpath.c @ 19283:b865cd5c1925 legacy-trunk