-diff -urN dropbear.old/svr-authpubkey.c dropbear.dev/svr-authpubkey.c
---- dropbear.old/svr-authpubkey.c 2005-12-09 06:42:33.000000000 +0100
-+++ dropbear.dev/svr-authpubkey.c 2005-12-12 01:35:32.139358750 +0100
-@@ -155,7 +155,6 @@
- unsigned char* keyblob, unsigned int keybloblen) {
-
- FILE * authfile = NULL;
-- char * filename = NULL;
- int ret = DROPBEAR_FAILURE;
- buffer * line = NULL;
- unsigned int len, pos;
-@@ -176,17 +175,8 @@
+diff -ur dropbear-0.52.orig/svr-authpubkey.c dropbear-0.52/svr-authpubkey.c
+--- dropbear-0.52.orig/svr-authpubkey.c 2009-04-08 00:32:16.000000000 +0200
++++ dropbear-0.52/svr-authpubkey.c 2009-04-08 00:44:11.000000000 +0200
+@@ -209,17 +209,21 @@
goto out;
}
- /* we don't need to check pw and pw_dir for validity, since
- * its been done in checkpubkeyperms. */
-- len = strlen(ses.authstate.pw->pw_dir);
+- len = strlen(ses.authstate.pw_dir);
- /* allocate max required pathname storage,
- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
- filename = m_malloc(len + 22);
- snprintf(filename, len + 22, "%s/.ssh/authorized_keys",
-- ses.authstate.pw->pw_dir);
+- ses.authstate.pw_dir);
-
- /* open the file */
+- /* open the file */
- authfile = fopen(filename, "r");
-+ authfile = fopen("/etc/dropbear/authorized_keys", "r");
++ if (ses.authstate.pw_uid != 0) {
++ /* we don't need to check pw and pw_dir for validity, since
++ * its been done in checkpubkeyperms. */
++ len = strlen(ses.authstate.pw_dir);
++ /* allocate max required pathname storage,
++ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
++ filename = m_malloc(len + 22);
++ snprintf(filename, len + 22, "%s/.ssh/authorized_keys",
++ ses.authstate.pw_dir);
++
++ /* open the file */
++ authfile = fopen(filename, "r");
++ } else {
++ authfile = fopen("/etc/dropbear/authorized_keys","r");
++ }
if (authfile == NULL) {
goto out;
}
-@@ -247,7 +237,6 @@
- if (line) {
- buf_free(line);
- }
-- m_free(filename);
- TRACE(("leave checkpubkey: ret=%d", ret))
- return ret;
- }
-@@ -255,12 +244,11 @@
-
- /* Returns DROPBEAR_SUCCESS if file permissions for pubkeys are ok,
- * DROPBEAR_FAILURE otherwise.
-- * Checks that the user's homedir, ~/.ssh, and
-- * ~/.ssh/authorized_keys are all owned by either root or the user, and are
-+ * Checks that /etc/dropbear and /etc/dropbear/authorized_keys
-+ * are all owned by either root or the user, and are
- * g-w, o-w */
- static int checkpubkeyperms() {
-
-- char* filename = NULL;
- int ret = DROPBEAR_FAILURE;
- unsigned int len;
-
-@@ -274,25 +262,11 @@
+@@ -372,26 +376,35 @@
goto out;
}
- /* allocate max required pathname storage,
- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
- filename = m_malloc(len + 22);
-- strncpy(filename, ses.authstate.pw->pw_dir, len+1);
+- strncpy(filename, ses.authstate.pw_dir, len+1);
-
- /* check ~ */
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
- /* check ~/.ssh */
- strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
-+ if (checkfileperm("/etc/dropbear") != DROPBEAR_SUCCESS) {
- goto out;
- }
-
+- goto out;
+- }
+-
- /* now check ~/.ssh/authorized_keys */
- strncat(filename, "/authorized_keys", 16);
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
-+ if (checkfileperm("/etc/dropbear/authorized_keys") != DROPBEAR_SUCCESS) {
- goto out;
+- goto out;
++ if (ses.authstate.pw_uid == 0) {
++ if (checkfileperm("/etc/dropbear") != DROPBEAR_SUCCESS) {
++ goto out;
++ }
++ if (checkfileperm("/etc/dropbear/authorized_keys") != DROPBEAR_SUCCESS) {
++ goto out;
++ }
++ } else {
++ /* allocate max required pathname storage,
++ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
++ filename = m_malloc(len + 22);
++ strncpy(filename, ses.authstate.pw_dir, len+1);
++
++ /* check ~ */
++ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
++ goto out;
++ }
++
++ /* check ~/.ssh */
++ strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
++ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
++ goto out;
++ }
++
++ /* now check ~/.ssh/authorized_keys */
++ strncat(filename, "/authorized_keys", 16);
++ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
++ goto out;
++ }
}
-@@ -300,7 +274,6 @@
- ret = DROPBEAR_SUCCESS;
-
- out:
-- m_free(filename);
-
- TRACE(("leave checkpubkeyperms"))
- return ret;
+ /* file looks ok, return success */