Mercurial > cpython-lru_cache-weakref

annotate Modules/getpath.c @ 24042:63fbbed10714 legacy-trunk

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Simplify HTTPSConnection constructor. See discussion in SF bug 458463.
author Jeremy Hylton <jeremy@alum.mit.edu>
date Fri, 28 Jun 2002 23:38:14 +0000
parents c64fc56f6072
children 6b0e846b8d37
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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
9970
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
9 #ifdef WITH_NEXT_FRAMEWORK
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
10 #include <mach-o/dyld.h>
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
11 #endif
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
12
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
13 /* 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
14 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
15 * 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
16 * (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
17 * 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
18 * 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
19 * 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
20 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
21 * 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
22 * 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
23 * 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
24 * 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
25 * 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
26 * 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
27 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
28 * 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
29 * 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
30 * 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
31 * 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
32 * 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
33 * 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
34 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
35 * 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
36 * 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
37 * 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
38 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
39 * 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
40 * (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
41 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
42 * 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
43 * 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
44 * landmark.
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
45 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
46 * 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
47 * 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
48 * 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
49 * 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
50 * 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
51 * 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
52 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
53 * 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
54 * 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
55 * 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
56 * 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
57 * 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
58 * 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
59 * installed setup.
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
60 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
61 * 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
62 * 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
63 * 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
64 * 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
65 * 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
66 *
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
67 * 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
68 * 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
69 * 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
70 * 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
71 * 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
72 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
73 * 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
74 * 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
75 * 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
76 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
77 * That's it!
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
78 *
5316
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
79 * 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
80 * 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
81 * 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
82 * 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
83 * variable $PYTHONPATH is inserted in front of it all. Finally, the
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
84 * prefix and exec_prefix globals are tweaked so they reflect the values
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
85 * expected by other code, by stripping the "lib/python$VERSION/..." stuff
c8e24c4b8bfb Removed two unused static function: string_addsep() and
Barry Warsaw <barry@python.org>
parents: 5300
diff changeset
86 * 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
87 * 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
88 * 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
89 * 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
90 * 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
91 * 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
92 */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
93
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
94 #ifndef VERSION
16147
fbf8abec93d1 Clean up some comments and the default VERSION.
Guido van Rossum <guido@python.org>
parents: 14907
diff changeset
95 #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
96 #endif
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 VPATH
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
99 #define VPATH "."
2896
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
100 #endif
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
101
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
102 #ifndef PREFIX
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
103 #define PREFIX "/usr/local"
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
104 #endif
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
105
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
106 #ifndef EXEC_PREFIX
3878
4286910080a9 Don't have "." in the default path.
Guido van Rossum <guido@python.org>
parents: 3674
diff changeset
107 #define EXEC_PREFIX PREFIX
3674
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
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
110 #ifndef PYTHONPATH
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
111 #define PYTHONPATH PREFIX "/lib/python" VERSION ":" \
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
112 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
113 #endif
2896
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
114
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
115 #ifndef LANDMARK
12775
8e2b35d386aa Patch from M.-A. Lemburg:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
116 #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
117 #endif
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
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 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
120 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
121 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
122 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
123 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
124
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
125 static void
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
126 reduce(char *dir)
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
127 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
128 size_t i = strlen(dir);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
129 while (i > 0 && dir[i] != SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
130 --i;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
131 dir[i] = '\0';
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
132 }
7117
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
133
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
134
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
135 static int
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
136 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
137 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
138 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
139 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
140 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
141 if (!S_ISREG(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
142 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
143 return 1;
7117
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
144 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
145
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
146
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
147 static int
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
148 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
149 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
150 if (isfile(filename))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
151 return 1;
7117
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
152
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
153 /* 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
154 if (strlen(filename) < MAXPATHLEN) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
155 strcat(filename, Py_OptimizeFlag ? "o" : "c");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
156 if (isfile(filename))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
157 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
158 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
159 return 0;
7117
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
160 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
161
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
162
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
163 static int
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
164 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
165 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
166 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
167 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
168 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
169 if (!S_ISREG(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
170 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
171 if ((buf.st_mode & 0111) == 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 return 1;
7117
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
174 }
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
175
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
176
419dca2b3a61 Instead of a single exists(), differentiate between files, modules,
Guido van Rossum <guido@python.org>
parents: 6823
diff changeset
177 static int
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
178 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
179 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
180 struct stat buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
181 if (stat(filename, &buf) != 0)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
182 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
183 if (!S_ISDIR(buf.st_mode))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
184 return 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
185 return 1;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
186 }
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
187
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
188
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
189 /* 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
190 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
191 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
192 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
193 */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
194 static void
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
195 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
196 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
197 size_t n, k;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
198 if (stuff[0] == SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
199 n = 0;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
200 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
201 n = strlen(buffer);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
202 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
203 buffer[n++] = SEP;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
204 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
205 k = strlen(stuff);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
206 if (n + k > MAXPATHLEN)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
207 k = MAXPATHLEN - n;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
208 strncpy(buffer+n, stuff, k);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
209 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
210 }
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
211
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
212 /* copy_absolute requires that path be allocated at least
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
213 MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes. */
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
214 static void
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
215 copy_absolute(char *path, char *p)
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
216 {
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
217 if (p[0] == SEP)
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
218 strcpy(path, p);
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
219 else {
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
220 getcwd(path, MAXPATHLEN);
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
221 if (p[0] == '.' && p[1] == SEP)
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
222 p += 2;
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
223 joinpath(path, p);
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
224 }
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 }
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
226
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
227 /* absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes. */
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
228 static void
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
229 absolutize(char *path)
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
230 {
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
231 char buffer[MAXPATHLEN + 1];
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
232
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
233 if (path[0] == SEP)
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
234 return;
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
235 copy_absolute(buffer, path);
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
236 strcpy(path, buffer);
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
237 }
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
238
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
239 /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
240 bytes long.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
241 */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
242 static int
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
243 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
244 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
245 size_t n;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
246 char *vpath;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
247
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
248 /* 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
249 if (home) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
250 char *delim;
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
251 strncpy(prefix, home, MAXPATHLEN);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
252 delim = strchr(prefix, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
253 if (delim)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
254 *delim = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
255 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
256 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
257 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
258 }
12775
8e2b35d386aa Patch from M.-A. Lemburg:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
259
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
260 /* 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
261 strcpy(prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
262 joinpath(prefix, "Modules/Setup");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
263 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
264 /* 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
265 vpath = VPATH;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
266 strcpy(prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
267 joinpath(prefix, vpath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
268 joinpath(prefix, "Lib");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
269 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
270 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
271 return -1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
272 }
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
273
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
274 /* Search from argv0_path, until root is found */
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
275 copy_absolute(prefix, argv0_path);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
276 do {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
277 n = strlen(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
278 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
279 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
280 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
281 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
282 prefix[n] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
283 reduce(prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
284 } while (prefix[0]);
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
285
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
286 /* 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
287 strncpy(prefix, PREFIX, MAXPATHLEN);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
288 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
289 joinpath(prefix, LANDMARK);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
290 if (ismodule(prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
291 return 1;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
292
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
293 /* Fail */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
294 return 0;
5300
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
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
297
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
298 /* search_for_exec_prefix requires that argv0_path be no more than
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
299 MAXPATHLEN bytes long.
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
300 */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
301 static int
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
302 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
303 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
304 size_t n;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
305
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
306 /* 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
307 if (home) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
308 char *delim;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
309 delim = strchr(home, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
310 if (delim)
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
311 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
312 else
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
313 strncpy(exec_prefix, home, MAXPATHLEN);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
314 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
315 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
316 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
317 }
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
318
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
319 /* 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
320 strcpy(exec_prefix, argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
321 joinpath(exec_prefix, "Modules/Setup");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
322 if (isfile(exec_prefix)) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
323 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
324 return -1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
325 }
12775
8e2b35d386aa Patch from M.-A. Lemburg:
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 12576
diff changeset
326
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
327 /* Search from argv0_path, until root is found */
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
328 copy_absolute(exec_prefix, argv0_path);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
329 do {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
330 n = strlen(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
331 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
332 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
333 if (isdir(exec_prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
334 return 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
335 exec_prefix[n] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
336 reduce(exec_prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
337 } 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
338
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
339 /* 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
340 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
341 joinpath(exec_prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
342 joinpath(exec_prefix, "lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
343 if (isdir(exec_prefix))
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
344 return 1;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
345
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
346 /* Fail */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
347 return 0;
5300
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
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
351 static void
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13620
diff changeset
352 calculate_path(void)
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
353 {
13667
a6c7bfdd6777 Even more ANSIfication: fix as many function pointers and declarations as
Thomas Wouters <thomas@python.org>
parents: 13651
diff changeset
354 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
355
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
356 static char delimiter[2] = {DELIM, '\0'};
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
357 static char separator[2] = {SEP, '\0'};
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
358 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
359 char *rtpypath = Py_GETENV("PYTHONPATH");
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
360 char *home = Py_GetPythonHome();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
361 char *path = getenv("PATH");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
362 char *prog = Py_GetProgramName();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
363 char argv0_path[MAXPATHLEN+1];
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
364 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
365 char *buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
366 size_t bufsz;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
367 size_t prefixsz;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
368 char *defpath = pythonpath;
9970
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
369 #ifdef WITH_NEXT_FRAMEWORK
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
370 NSModule pythonModule;
9970
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
371 #endif
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
372
21141
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
373 /* If there is no slash in the argv0 path, then we have to
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
374 * assume python is on the user's $PATH, since there's no
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
375 * other way to find a directory to start the search from. If
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
376 * $PATH isn't exported, you lose.
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
377 */
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
378 if (strchr(prog, SEP))
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
379 strncpy(progpath, prog, MAXPATHLEN);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
380 else if (path) {
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
381 while (1) {
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
382 char *delim = strchr(path, DELIM);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
383
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
384 if (delim) {
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
385 size_t len = delim - path;
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
386 if (len > MAXPATHLEN)
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
387 len = MAXPATHLEN;
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
388 strncpy(progpath, path, len);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
389 *(progpath + len) = '\0';
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
390 }
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
391 else
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
392 strncpy(progpath, path, MAXPATHLEN);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
393
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
394 joinpath(progpath, prog);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
395 if (isxfile(progpath))
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
396 break;
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
397
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
398 if (!delim) {
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
399 progpath[0] = '\0';
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
400 break;
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
401 }
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
402 path = delim + 1;
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
403 }
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
404 }
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
405 else
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
406 progpath[0] = '\0';
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
407 if (progpath[0] != SEP)
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
408 absolutize(progpath);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
409 strncpy(argv0_path, progpath, MAXPATHLEN);
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
410
9970
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
411 #ifdef WITH_NEXT_FRAMEWORK
21141
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
412 /* On Mac OS X we have a special case if we're running from a framework.
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
413 ** This is because the python home should be set relative to the library,
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
414 ** which is in the framework, not relative to the executable, which may
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
415 ** be outside of the framework. Except when we're in the build directory...
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
416 */
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
417 pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize"));
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
418 /* 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
419 buf = NSLibraryNameForModule(pythonModule);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
420 if (buf != NULL) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
421 /* 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
422 /* 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
423 ** 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
424 ** 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
425 ** 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
426 ** 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
427 ** 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
428 */
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python
Jack Jansen <jack.jansen@cwi.nl>
parents: 19061
diff changeset
429 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
430 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
431 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
432 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
433 if (!ismodule(argv0_path)) {
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
434 /* We are in the build directory so use the name of the
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
435 executable - we know that the absolute path is passed */
21141
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
436 strncpy(argv0_path, prog, MAXPATHLEN);
19261
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python
Jack Jansen <jack.jansen@cwi.nl>
parents: 19061
diff changeset
437 }
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python
Jack Jansen <jack.jansen@cwi.nl>
parents: 19061
diff changeset
438 else {
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
439 /* Use the location of the library as the progpath */
21141
51b4572cf013 Changed logic for finding python home in Mac OS X framework Pythons.
Jack Jansen <jack.jansen@cwi.nl>
parents: 20156
diff changeset
440 strncpy(argv0_path, buf, MAXPATHLEN);
19261
ca7dbacbbe18 With WITH_NEXT_FRAMEWORK defined we now also expect a normal Python
Jack Jansen <jack.jansen@cwi.nl>
parents: 19061
diff changeset
441 }
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
442 }
9970
8efa37a770c6 Patches by William Lewis for Nextstep descendants.
Guido van Rossum <guido@python.org>
parents: 8203
diff changeset
443 #endif
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
444
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
445 #if HAVE_READLINK
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
446 {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
447 char tmpbuffer[MAXPATHLEN+1];
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
448 int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
449 while (linklen != -1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
450 /* It's not null terminated! */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
451 tmpbuffer[linklen] = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
452 if (tmpbuffer[0] == SEP)
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
453 /* tmpbuffer should never be longer than MAXPATHLEN,
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
454 but extra check does not hurt */
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
455 strncpy(argv0_path, tmpbuffer, MAXPATHLEN);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
456 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
457 /* Interpret relative to progpath */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
458 reduce(argv0_path);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
459 joinpath(argv0_path, tmpbuffer);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
460 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
461 linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
462 }
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 #endif /* HAVE_READLINK */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
465
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
466 reduce(argv0_path);
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
467 /* 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
468 MAXPATHLEN bytes long.
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
469 */
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
470
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
471 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
472 if (!Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
473 fprintf(stderr,
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
474 "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
475 strncpy(prefix, PREFIX, MAXPATHLEN);
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
476 joinpath(prefix, lib_python);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
477 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
478 else
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
479 reduce(prefix);
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
480
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
481 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
482 if (!Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
483 fprintf(stderr,
20156
416f0bc228e8 Be more rigorous about making pathnames absolute, to address SF bug
Guido van Rossum <guido@python.org>
parents: 19261
diff changeset
484 "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
485 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
486 joinpath(exec_prefix, "lib/lib-dynload");
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
487 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
488 /* 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
489
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
490 if ((!pfound || !efound) && !Py_FrozenFlag)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
491 fprintf(stderr,
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
492 "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
493
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
494 /* Calculate size of return buffer.
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
495 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
496 bufsz = 0;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
497
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
498 if (rtpypath)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
499 bufsz += strlen(rtpypath) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
500
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
501 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
502
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
503 while (1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
504 char *delim = strchr(defpath, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
505
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
506 if (defpath[0] != SEP)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
507 /* Paths are relative to prefix */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
508 bufsz += prefixsz;
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
509
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
510 if (delim)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
511 bufsz += delim - defpath + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
512 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
513 bufsz += strlen(defpath) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
514 break;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
515 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
516 defpath = delim + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
517 }
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 bufsz += strlen(exec_prefix) + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
520
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
521 /* 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
522 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
523
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
524 if (buf == NULL) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
525 /* 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
526 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
527 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
528 module_search_path = PYTHONPATH;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
529 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
530 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
531 /* 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
532 if (rtpypath) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
533 strcpy(buf, rtpypath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
534 strcat(buf, delimiter);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
535 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
536 else
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
537 buf[0] = '\0';
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
538
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
539 /* 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
540 * dynamically located prefix.
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
541 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
542 defpath = pythonpath;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
543 while (1) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
544 char *delim = strchr(defpath, DELIM);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
545
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
546 if (defpath[0] != SEP) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
547 strcat(buf, prefix);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
548 strcat(buf, separator);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
549 }
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
550
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
551 if (delim) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
552 size_t len = delim - defpath + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
553 size_t end = strlen(buf) + len;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
554 strncat(buf, defpath, len);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
555 *(buf + end) = '\0';
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
556 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
557 else {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
558 strcat(buf, defpath);
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
559 break;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
560 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
561 defpath = delim + 1;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
562 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
563 strcat(buf, delimiter);
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
564
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
565 /* 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
566 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
567
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
568 /* And publish the results */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
569 module_search_path = buf;
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
570 }
5300
e77942562dd3 Completely revamped the way the default path is constructed.
Guido van Rossum <guido@python.org>
parents: 4503
diff changeset
571
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
572 /* 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
573 * 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
574 * 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
575 * return the compiled-in defaults instead.
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
576 */
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
577 if (pfound > 0) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
578 reduce(prefix);
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 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
581 else
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
582 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
583
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
584 if (efound > 0) {
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
585 reduce(exec_prefix);
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 }
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
589 else
14898
4bea4f59c4e4 Fix buffer overflow vulnerabilities in calculate_path(). Code used
Jeremy Hylton <jeremy@alum.mit.edu>
parents: 14845
diff changeset
590 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
591 }
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 /* External interface */
2896
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
595
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
596 char *
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13620
diff changeset
597 Py_GetPath(void)
2896
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
598 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
599 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
600 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
601 return module_search_path;
2896
f0d9f800a4aa Initial revision
Guido van Rossum <guido@python.org>
parents:
diff changeset
602 }
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
603
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
604 char *
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13620
diff changeset
605 Py_GetPrefix(void)
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
606 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
607 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
608 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
609 return prefix;
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
610 }
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 char *
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13620
diff changeset
613 Py_GetExecPrefix(void)
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
614 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
615 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
616 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
617 return exec_prefix;
3674
3eaf2c673a11 provide access to $(exec_)prefix
Guido van Rossum <guido@python.org>
parents: 3621
diff changeset
618 }
5568
139ab21d2629 Make delimiter and separator static for K&R C.
Guido van Rossum <guido@python.org>
parents: 5500
diff changeset
619
139ab21d2629 Make delimiter and separator static for K&R C.
Guido van Rossum <guido@python.org>
parents: 5500
diff changeset
620 char *
13651
8a063423e0b7 Bunch of minor ANSIfications: 'void initfunc()' -> 'void initfunc(void)',
Thomas Wouters <thomas@python.org>
parents: 13620
diff changeset
621 Py_GetProgramFullPath(void)
5568
139ab21d2629 Make delimiter and separator static for K&R C.
Guido van Rossum <guido@python.org>
parents: 5500
diff changeset
622 {
13428
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
623 if (!module_search_path)
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
624 calculate_path();
0d6af303a86c ANSI-fied sources, converted to four-space indentation.
Fred Drake <fdrake@acm.org>
parents: 13256
diff changeset
625 return progpath;
5568
139ab21d2629 Make delimiter and separator static for K&R C.
Guido van Rossum <guido@python.org>
parents: 5500
diff changeset
626 }