-Index: dropbear-0.50/svr-authpubkey.c
-===================================================================
---- dropbear-0.50.orig/svr-authpubkey.c 2007-08-10 23:47:48.000000000 +0200
-+++ dropbear-0.50/svr-authpubkey.c 2007-08-10 23:47:48.000000000 +0200
-@@ -176,6 +176,8 @@
+--- a/svr-authpubkey.c
++++ b/svr-authpubkey.c
+@@ -209,17 +209,21 @@ static int checkpubkey(unsigned char* al
goto out;
}
-+ if (ses.authstate.pw->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");
++ 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);
+
- /* 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);
-@@ -187,6 +189,9 @@
-
- /* open the file */
- authfile = fopen(filename, "r");
++ /* open the file */
++ authfile = fopen(filename, "r");
+ } else {
+ authfile = fopen("/etc/dropbear/authorized_keys","r");
+ }
if (authfile == NULL) {
goto out;
}
-@@ -274,6 +279,8 @@
+@@ -372,26 +376,35 @@ static int checkpubkeyperms() {
goto out;
}
-+ if (ses.authstate.pw->pw_uid != 0) {
-+
- /* allocate max required pathname storage,
- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
- filename = m_malloc(len + 22);
-@@ -295,6 +302,14 @@
- if (checkfileperm(filename) != 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;
++ 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;
++ }
+ }
/* file looks ok, return success */
- ret = DROPBEAR_SUCCESS;