2009-06-23 17:59:23 +00:00
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diff -up openssh-5.2p1/session.c.homechroot openssh-5.2p1/session.c
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--- openssh-5.2p1/session.c.homechroot 2009-06-23 11:33:36.052163641 +0200
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+++ openssh-5.2p1/session.c 2009-06-23 11:33:36.372159228 +0200
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@@ -1398,6 +1398,8 @@ do_nologin(struct passwd *pw)
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}
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}
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+int chroot_no_tree = 0;
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+
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/*
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* Chroot into a directory after checking it for safety: all path components
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* must be root-owned directories with strict permissions.
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@@ -1408,6 +1410,7 @@ safely_chroot(const char *path, uid_t ui
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2009-04-03 12:37:30 +00:00
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const char *cp;
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char component[MAXPATHLEN];
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struct stat st;
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+ int last;
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if (*path != '/')
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fatal("chroot path does not begin at root");
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2009-06-23 17:59:23 +00:00
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@@ -1419,7 +1422,7 @@ safely_chroot(const char *path, uid_t ui
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2009-04-03 12:37:30 +00:00
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* root-owned directory with strict permissions.
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*/
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for (cp = path; cp != NULL;) {
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- if ((cp = strchr(cp, '/')) == NULL)
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+ if (((last = ((cp = strchr(cp, '/')) == NULL))))
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strlcpy(component, path, sizeof(component));
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else {
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cp++;
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2009-06-23 17:59:23 +00:00
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@@ -1432,13 +1435,15 @@ safely_chroot(const char *path, uid_t ui
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2009-04-03 12:37:30 +00:00
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if (stat(component, &st) != 0)
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fatal("%s: stat(\"%s\"): %s", __func__,
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component, strerror(errno));
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- if (st.st_uid != 0 || (st.st_mode & 022) != 0)
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+ if ((st.st_uid != 0 || (st.st_mode & 022) != 0) && !(last && st.st_uid == uid))
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fatal("bad ownership or modes for chroot "
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"directory %s\"%s\"",
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cp == NULL ? "" : "component ", component);
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2009-06-23 17:59:23 +00:00
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if (!S_ISDIR(st.st_mode))
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fatal("chroot path %s\"%s\" is not a directory",
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cp == NULL ? "" : "component ", component);
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+ if (st.st_uid != uid)
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+ ++chroot_no_tree;
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}
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diff -up openssh-5.2p1/sftp-server.c.homechroot openssh-5.2p1/sftp-server.c
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--- openssh-5.2p1/sftp-server.c.homechroot 2008-07-04 06:10:19.000000000 +0200
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+++ openssh-5.2p1/sftp-server.c 2009-06-23 11:33:36.374154561 +0200
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@@ -887,6 +887,7 @@ process_opendir(void)
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static void
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process_readdir(void)
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{
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+ extern int chroot_no_tree;
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DIR *dirp;
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struct dirent *dp;
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char *path;
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@@ -920,7 +921,7 @@ process_readdir(void)
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continue;
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stat_to_attrib(&st, &(stats[count].attrib));
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stats[count].name = xstrdup(dp->d_name);
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- stats[count].long_name = ls_file(dp->d_name, &st, 0);
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+ stats[count].long_name = ls_file(dp->d_name, &st, chroot_no_tree);
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count++;
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/* send up to 100 entries in one message */
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/* XXX check packet size instead */
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diff -up openssh-5.2p1/sftp-server-main.c.homechroot openssh-5.2p1/sftp-server-main.c
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--- openssh-5.2p1/sftp-server-main.c.homechroot 2009-02-21 22:47:02.000000000 +0100
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+++ openssh-5.2p1/sftp-server-main.c 2009-06-23 11:33:36.378159051 +0200
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@@ -27,6 +27,8 @@
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#include "sftp.h"
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#include "misc.h"
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+int chroot_no_tree = 0;
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+
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void
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cleanup_exit(int i)
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{
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