Patch posix-acl.patch for FPM related Bug #68526

Patch version 2014-11-30 08:35 UTC

Obsoleted by patches:

• posix-acl.patch, revision 2014-11-30 09:21 UTC
• posix-acl.patch, revision 2014-11-30 09:56 UTC

• 2014-11-30 17:34 UTC [diff to current]
• 2014-11-30 16:50 UTC [diff to current]
• 2014-11-30 10:31 UTC [diff to current]
• 2014-11-30 09:56 UTC [diff to current]
• 2014-11-30 09:44 UTC [diff to current]
• 2014-11-30 09:21 UTC [diff to current]
• 2014-11-30 08:35 UTC [diff to current]

Developer: remi@php.net

diff -ru /home/php/php-src/sapi/fpm/config.m4 sapi/fpm/config.m4
--- /home/php/php-src/sapi/fpm/config.m4	2014-11-24 09:31:58.000000000 +0100
+++ sapi/fpm/config.m4	2014-11-29 17:27:07.173921156 +0100
@@ -583,6 +583,9 @@
   PHP_ARG_WITH(fpm-systemd,,
   [  --with-fpm-systemd      Activate systemd integration], no, no)
 
+  PHP_ARG_WITH(fpm-acl,,
+  [  --with-fpm-acl          Use POSIX Access Control Lists], no, no)
+
   if test "$PHP_FPM_SYSTEMD" != "no" ; then
     if test -z "$PKG_CONFIG"; then
       AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
@@ -624,6 +627,16 @@
   else
     php_fpm_systemd=simple
   fi
+
+  if test "$PHP_FPM_ACL" != "no" ; then
+    AC_CHECK_LIB(acl, acl_free, [
+      PHP_ADD_LIBRARY(acl)
+      AC_DEFINE(HAVE_FPM_ACL, 1, [ POSIX Access Control List ])
+    ],[
+      AC_MSG_ERROR(libacl required not found)
+    ])
+  fi
+
   PHP_SUBST_OLD(php_fpm_systemd)
   AC_DEFINE_UNQUOTED(PHP_FPM_SYSTEMD, "$php_fpm_systemd", [fpm systemd service type])
 
diff -ru /home/php/php-src/sapi/fpm/fpm/fpm_conf.c sapi/fpm/fpm/fpm_conf.c
--- /home/php/php-src/sapi/fpm/fpm/fpm_conf.c	2014-11-29 17:28:25.000000000 +0100
+++ sapi/fpm/fpm/fpm_conf.c	2014-11-30 08:20:14.849652988 +0100
@@ -123,6 +123,10 @@
 	{ "group",                     &fpm_conf_set_string,      WPO(group) },
 	{ "listen",                    &fpm_conf_set_string,      WPO(listen_address) },
 	{ "listen.backlog",            &fpm_conf_set_integer,     WPO(listen_backlog) },
+#ifdef HAVE_FPM_ACL
+	{ "listen.users",              &fpm_conf_set_string,      WPO(listen_users) },
+	{ "listen.groups",             &fpm_conf_set_string,      WPO(listen_groups) },
+#endif
 	{ "listen.owner",              &fpm_conf_set_string,      WPO(listen_owner) },
 	{ "listen.group",              &fpm_conf_set_string,      WPO(listen_group) },
 	{ "listen.mode",               &fpm_conf_set_string,      WPO(listen_mode) },
@@ -1583,6 +1587,10 @@
 		zlog(ZLOG_NOTICE, "\tgroup = %s",                      STR2STR(wp->config->group));
 		zlog(ZLOG_NOTICE, "\tlisten = %s",                     STR2STR(wp->config->listen_address));
 		zlog(ZLOG_NOTICE, "\tlisten.backlog = %d",             wp->config->listen_backlog);
+#ifdef HAVE_FPM_ACL
+		zlog(ZLOG_NOTICE, "\tlisten.users = %s",               STR2STR(wp->config->listen_owner));
+		zlog(ZLOG_NOTICE, "\tlisten.groups = %s",              STR2STR(wp->config->listen_group));
+#endif
 		zlog(ZLOG_NOTICE, "\tlisten.owner = %s",               STR2STR(wp->config->listen_owner));
 		zlog(ZLOG_NOTICE, "\tlisten.group = %s",               STR2STR(wp->config->listen_group));
 		zlog(ZLOG_NOTICE, "\tlisten.mode = %s",                STR2STR(wp->config->listen_mode));
diff -ru /home/php/php-src/sapi/fpm/fpm/fpm_conf.h sapi/fpm/fpm/fpm_conf.h
--- /home/php/php-src/sapi/fpm/fpm/fpm_conf.h	2014-11-24 09:31:58.000000000 +0100
+++ sapi/fpm/fpm/fpm_conf.h	2014-11-30 08:22:22.538125786 +0100
@@ -58,6 +58,7 @@
 	char *group;
 	char *listen_address;
 	int listen_backlog;
+	/* Using chown */
 	char *listen_owner;
 	char *listen_group;
 	char *listen_mode;
@@ -91,6 +92,11 @@
 #ifdef HAVE_APPARMOR
 	char *apparmor_hat;
 #endif
+#ifdef HAVE_FPM_ACL
+	/* Using Posix ACL */
+	char *listen_users;
+	char *listen_groups;
+#endif
 };
 
 struct ini_value_parser_s {
diff -ru /home/php/php-src/sapi/fpm/fpm/fpm_unix.c sapi/fpm/fpm/fpm_unix.c
--- /home/php/php-src/sapi/fpm/fpm/fpm_unix.c	2014-11-29 16:52:25.000000000 +0100
+++ sapi/fpm/fpm/fpm_unix.c	2014-11-30 09:29:28.072318768 +0100
@@ -21,6 +21,10 @@
 #include <sys/apparmor.h>
 #endif
 
+#ifdef HAVE_FPM_ACL
+#include <sys/acl.h>
+#endif
+
 #include "fpm.h"
 #include "fpm_conf.h"
 #include "fpm_cleanup.h"
@@ -35,8 +39,12 @@
 int fpm_unix_resolve_socket_premissions(struct fpm_worker_pool_s *wp) /* {{{ */
 {
 	struct fpm_worker_pool_config_s *c = wp->config;
+#ifdef HAVE_FPM_ACL
+	int n;
 
 	/* uninitialized */
+	wp->socket_acl  = NULL;
+#endif
 	wp->socket_uid = -1;
 	wp->socket_gid = -1;
 	wp->socket_mode = 0660;
@@ -45,6 +53,107 @@
 		return 0;
 	}
 
+#ifdef HAVE_FPM_ACL
+	/* count the users and groups configured */
+	n = 0;
+	if (c->listen_users && *c->listen_users) {
+		char *p;
+		n++;
+		for (p=strchr(c->listen_users, ',') ; p ; p=strchr(p+1, ',')) {
+			n++;
+		}
+	}
+	if (c->listen_groups && *c->listen_groups) {
+		char *p;
+		n++;
+		for (p=strchr(c->listen_groups, ',') ; p ; p=strchr(p+1, ',')) {
+			n++;
+		}
+	}
+	/* if ACL configured */
+	if (n) {
+		acl_t acl;
+		acl_entry_t entry;
+		acl_permset_t perm;
+		char *tmp, *p, *end;
+
+		acl = acl_init(n);
+		if (!acl) {
+			zlog(ZLOG_SYSERROR, "[pool %s] cannot allocated ACL", wp->config->name);
+			return -1;
+		}
+		/* Create USER ACL */
+		if (c->listen_users && *c->listen_users) {
+			struct passwd *pwd;
+
+			tmp = estrdup(c->listen_users);
+			for (p=tmp ; p ; p=end) {
+				if ((end = strchr(p, ','))) {
+					*end++ = 0;
+				}
+				pwd = getpwnam(p);
+				if (pwd) {
+					zlog(ZLOG_DEBUG, "[pool %s] user '%s' have uid=%d", wp->config->name, p, pwd->pw_uid);
+				} else {
+					zlog(ZLOG_SYSERROR, "[pool %s] cannot get uid for user '%s'", wp->config->name, p);
+					acl_free(acl);
+					efree(tmp);
+					return -1;
+				}
+				if (0 > acl_create_entry(&acl, &entry) ||
+					0 > acl_set_tag_type(entry, ACL_USER) ||
+					0 > acl_set_qualifier(entry, &pwd->pw_uid) ||
+					0 > acl_get_permset(entry, &perm) ||
+					0 > acl_clear_perms (perm) ||
+					0 > acl_add_perm (perm, ACL_READ) ||
+					0 > acl_add_perm (perm, ACL_WRITE)) {
+					zlog(ZLOG_SYSERROR, "[pool %s] cannot create ACL for user '%s'", wp->config->name, p);
+					acl_free(acl);
+					efree(tmp);
+					return -1;
+				}
+			}
+			efree(tmp);
+		}
+		/* Create GROUP ACL */
+		if (c->listen_groups && *c->listen_groups) {
+			struct group *grp;
+
+			tmp = estrdup(c->listen_groups);
+			for (p=tmp ; p ; p=end) {
+				if ((end = strchr(p, ','))) {
+					*end++ = 0;
+				}
+				grp = getgrnam(p);
+				if (grp) {
+					zlog(ZLOG_DEBUG, "[pool %s] group '%s' have gid=%d", wp->config->name, p, grp->gr_gid);
+				} else {
+					zlog(ZLOG_SYSERROR, "[pool %s] cannot get gid for group '%s'", wp->config->name, p);
+					acl_free(acl);
+					efree(tmp);
+					return -1;
+				}
+				if (0 > acl_create_entry(&acl, &entry) ||
+					0 > acl_set_tag_type(entry, ACL_GROUP) ||
+					0 > acl_set_qualifier(entry, &grp->gr_gid) ||
+					0 > acl_get_permset(entry, &perm) ||
+					0 > acl_clear_perms (perm) ||
+					0 > acl_add_perm (perm, ACL_READ) ||
+					0 > acl_add_perm (perm, ACL_WRITE)) {
+					zlog(ZLOG_SYSERROR, "[pool %s] cannot create ACL for group '%s'", wp->config->name, p);
+					acl_free(acl);
+					efree(tmp);
+					return -1;
+				}
+			}
+			efree(tmp);
+		}
+		wp->socket_acl  = acl;
+		return 0;
+	}
+	/* When listen.users and listen.groups not configured, continue with standard right */
+#endif
+
 	if (c->listen_owner && *c->listen_owner) {
 		struct passwd *pwd;
 
@@ -78,9 +187,49 @@
 
 int fpm_unix_set_socket_premissions(struct fpm_worker_pool_s *wp, const char *path) /* {{{ */
 {
+#ifdef HAVE_FPM_ACL
+	if (wp->socket_acl) {
+		acl_t aclfile, aclconf;
+		acl_entry_t entryfile, entryconf;
+		int i;
+
+		/* Read the socket ACL */
+		aclconf = wp->socket_acl;
+		aclfile = acl_get_file (path, ACL_TYPE_ACCESS);
+		if (!aclfile) {
+			zlog(ZLOG_SYSERROR, "[pool %s] failed to read the ACL of the socket '%s'", wp->config->name, path);
+			acl_free(aclfile);
+			return -1;
+		}
+		/* Copy the new ACL entry from config */
+		for (i=ACL_FIRST_ENTRY ; acl_get_entry(aclconf, i, &entryconf) ; i=ACL_NEXT_ENTRY) {
+			if (0 > acl_create_entry (&aclfile, &entryfile) ||
+			    0 > acl_copy_entry(entryfile, entryconf)) {
+				zlog(ZLOG_SYSERROR, "[pool %s] failed to add entry to the ACL of the socket '%s'", wp->config->name, path);
+				acl_free(aclfile);
+				return -1;
+			}
+		}
+		/* Write the socket ACL */
+		if (0 > acl_calc_mask (&aclfile) ||
+			0 > acl_valid (aclfile) ||
+			0 > acl_set_file (path, ACL_TYPE_ACCESS, aclfile)) {
+			zlog(ZLOG_SYSERROR, "[pool %s] failed to write the ACL of the socket '%s'", wp->config->name, path);
+			acl_free(aclfile);
+			return -1;
+		} else {
+			zlog(ZLOG_DEBUG, "[pool %s] ACL of the socket '%s' is set", wp->config->name, path);
+		}
+
+		acl_free(aclfile);
+		return 0;
+	}
+	/* When listen.users and listen.groups not configured, continue with standard right */
+#endif
+
 	if (wp->socket_uid != -1 || wp->socket_gid != -1) {
 		if (0 > chown(path, wp->socket_uid, wp->socket_gid)) {
-			zlog(ZLOG_SYSERROR, "failed to chown() the socket '%s'", wp->config->listen_address);
+			zlog(ZLOG_SYSERROR, "[pool %s] failed to chown() the socket '%s'", wp->config->name, wp->config->listen_address);
 			return -1;
 		}
 	}
@@ -88,6 +237,16 @@
 }
 /* }}} */
 
+int fpm_unix_free_socket_premissions(struct fpm_worker_pool_s *wp) /* {{{ */
+{
+#ifdef HAVE_FPM_ACL
+	if (wp->socket_acl) {
+		acl_free(wp->socket_acl);
+	}
+#endif
+}
+/* }}} */
+
 static int fpm_unix_conf_wp(struct fpm_worker_pool_s *wp) /* {{{ */
 {
 	struct passwd *pwd;
diff -ru /home/php/php-src/sapi/fpm/fpm/fpm_unix.h sapi/fpm/fpm/fpm_unix.h
--- /home/php/php-src/sapi/fpm/fpm/fpm_unix.h	2014-11-29 16:52:25.000000000 +0100
+++ sapi/fpm/fpm/fpm_unix.h	2014-11-30 08:26:06.904956526 +0100
@@ -9,6 +9,8 @@
 
 int fpm_unix_resolve_socket_premissions(struct fpm_worker_pool_s *wp);
 int fpm_unix_set_socket_premissions(struct fpm_worker_pool_s *wp, const char *path);
+int fpm_unix_free_socket_premissions(struct fpm_worker_pool_s *wp);
+
 int fpm_unix_init_child(struct fpm_worker_pool_s *wp);
 int fpm_unix_init_main();
 
Les fichiers binaires /home/php/php-src/sapi/fpm/fpm/fpm_unix.o et sapi/fpm/fpm/fpm_unix.o sont différents
diff -ru /home/php/php-src/sapi/fpm/fpm/fpm_worker_pool.h sapi/fpm/fpm/fpm_worker_pool.h
--- /home/php/php-src/sapi/fpm/fpm/fpm_worker_pool.h	2014-03-06 11:00:20.000000000 +0100
+++ sapi/fpm/fpm/fpm_worker_pool.h	2014-11-30 08:39:44.687175401 +0100
@@ -42,6 +42,10 @@
 	/* for ondemand PM */
 	struct fpm_event_s *ondemand_event;
 	int socket_event_set;
+
+#ifdef HAVE_FPM_ACL
+	void *socket_acl;
+#endif
 };
 
 struct fpm_worker_pool_s *fpm_worker_pool_alloc();