Ключевые слова:patch, apache, suexec, user, limit, (найти похожие документы)
Date: Tue, 12 Feb 2002 22:37:14 +0300 (MSK)
From: Dmitry Morozovsky <marck@rinet.ru>
To: apache-talk@lists.lexa.ru
Subject: Конфигурация suexec более чем для одного пользователя и document_root
GvS сочинил-таки разумный патч для suexec, позволяющий конфигурить suexec
более чем для одного пользователя и более чем для одной иерархии
документов. Правила пользования -- в начале. Сделан на основе Apache
1.3.23.
ftp://ftp.cronyx.ru/pub/misc/apache-suexec-multihomed.diff
----------------------------------------------
WHY:
After some level of sophistication of the virtual hosting one may end up
with a need to run several instances of Apache and even several document
roots and want to use suexec for all those instances. The supplied patch
allows you both.
HOWTO:
$ cd apache_1.3.23
$ patch < /path/to/this_file
if you're patching over previous installation
$ ./config.status --suexec_caller=httpd,httpd2,httpd3 \
--suexec_docroot=/home,/www,/virt
or if you're running first time
$ ./configure ... --suexec_caller=httpd,httpd2,httpd3 \
--suexec_docroot=/home,/www,/virt
$ make
you need to be a super-user to install Apache (maybe)
$ su
or
$ sudo
Then type the following if you need to install suexec only
# make install-support
otherwise type
# make install
--- src/support/suexec.h.orig Mon Jan 15 20:06:40 2001
+++ src/support/suexec.h Tue Feb 12 17:11:35 2002
@@ -74,6 +74,10 @@
#define HTTPD_USER "www"
#endif
+#ifndef MAX_HTUSERS
+#define MAX_HTUSERS 16
+#endif
+
/*
* UID_MIN -- Define this as the lowest UID allowed to be a target user
* for suEXEC. For most systems, 500 or 100 is common.
@@ -131,6 +135,10 @@
*/
#ifndef DOC_ROOT
#define DOC_ROOT "/usr/local/apache/htdocs"
+#endif
+
+#ifndef MAX_DOCROOTS
+#define MAX_DOCROOTS 16
#endif
/*
--- src/support/suexec.c.orig Sun Feb 10 15:05:30 2002
+++ src/support/suexec.c Tue Feb 12 18:32:57 2002
@@ -121,6 +121,13 @@
#define AP_ENVBUF 256
+#ifdef _OSD_POSIX
+ /* User name comparisons are case insensitive on BS2000/OSD */
+#define STRCMP strcasecmp
+#else
+#define STRCMP strcmp
+#endif
+
extern char **environ;
static FILE *log = NULL;
@@ -286,6 +293,10 @@
struct stat dir_info; /* directory info holder */
struct stat prg_info; /* program info holder */
+ char *htuser, *p; /* list of possible suexec calles */
+ char *docroot; /* list of possible document roots */
+ int i;
+
prog = argv[0];
/*
* Check existence/validity of the UID of the user
@@ -296,19 +307,25 @@
log_err("crit: invalid uid: (%ld)\n", uid);
exit(102);
}
+
+ /*
+ * Find matching suexec_caller if ever presented
+ */
+
+ htuser = strdup( HTTPD_USER );
+ for (i = 0, p = strtok(htuser, ",");
+ p != NULL && i < MAX_HTUSERS;
+ p = strtok(NULL, ","), i++)
+ if (STRCMP(p, pw->pw_name) == 0) break;
+
/*
* See if this is a 'how were you compiled' request, and
* comply if so.
*/
+
if ((argc > 1)
&& (! strcmp(argv[1], "-V"))
- && ((uid == 0)
-#ifdef _OSD_POSIX
- /* User name comparisons are case insensitive on BS2000/OSD */
- || (! strcasecmp(HTTPD_USER, pw->pw_name)))
-#else /* _OSD_POSIX */
- || (! strcmp(HTTPD_USER, pw->pw_name)))
-#endif /* _OSD_POSIX */
+ && ((uid == 0) || p == NULL)
) {
#ifdef DOC_ROOT
fprintf(stderr, " -D DOC_ROOT=\"%s\"\n", DOC_ROOT);
@@ -344,29 +361,22 @@
log_err("alert: too few arguments\n");
exit(101);
}
- target_uname = argv[1];
- target_gname = argv[2];
- cmd = argv[3];
/*
* Check to see if the user running this program
* is the user allowed to do so as defined in
* suexec.h. If not the allowed user, error out.
*/
-#ifdef _OSD_POSIX
- /* User name comparisons are case insensitive on BS2000/OSD */
- if (strcasecmp(HTTPD_USER, pw->pw_name)) {
- log_err("crit: calling user mismatch (%s instead of %s)\n",
- pw->pw_name, HTTPD_USER);
- exit(103);
- }
-#else /* _OSD_POSIX */
- if (strcmp(HTTPD_USER, pw->pw_name)) {
+
+ if (p == NULL) {
log_err("crit: calling user mismatch (%s instead of %s)\n",
pw->pw_name, HTTPD_USER);
exit(103);
}
-#endif /* _OSD_POSIX */
+
+ target_uname = argv[1];
+ target_gname = argv[2];
+ cmd = argv[3];
/*
* Check for a leading '/' (absolute path) in the command to be executed,
@@ -454,8 +464,8 @@
* Log the transaction here to be sure we have an open log
* before we setuid().
*/
- log_err("info: (target/actual) uid: (%s/%s) gid: (%s/%s) cmd: %s\n",
- target_uname, actual_uname,
+ log_err("info: %s: (target/actual) uid: (%s/%s) gid: (%s/%s) cmd: %s\n",
+ p, target_uname, actual_uname,
target_gname, actual_gname,
cmd);
@@ -518,21 +528,32 @@
target_homedir);
exit(112);
}
+
+ if ((strncmp(cwd, dwd, strlen(dwd))) != 0) {
+ log_err("error: command not in docroot (%s/%s)\n", cwd, cmd);
+ exit(114);
+ }
}
else {
- if (((chdir(DOC_ROOT)) != 0) ||
+ docroot = strdup( DOC_ROOT );
+ for (i = 0, p = strtok(docroot, ",");
+ p != NULL && i < MAX_DOCROOTS;
+ p = strtok( NULL, ","), i++)
+ if (strncmp(cwd, p, strlen(p)) == 0) break;
+
+ if (p == NULL) {
+ log_err("error: command not in docroot (%s/%s)\n", cwd, cmd);
+ exit(114);
+ }
+
+ if (((chdir(p)) != 0) ||
((getcwd(dwd, AP_MAXPATH)) == NULL) ||
((chdir(cwd)) != 0)) {
- log_err("emerg: cannot get docroot information (%s)\n", DOC_ROOT);
+ log_err("emerg: cannot get docroot information (%s)\n", p);
exit(113);
}
}
- if ((strncmp(cwd, dwd, strlen(dwd))) != 0) {
- log_err("error: command not in docroot (%s/%s)\n", cwd, cmd);
- exit(114);
- }
-
/*
* Stat the cwd and verify it is a directory, or error out.
*/
