ad52658be7
Upstream changelog: https://matt.ucc.asn.au/dropbear/CHANGES This adds elliptic curve cryptography (ECC) support as an option, disabled by default. dropbear mips 34kc uClibc binary size: before: 161,672 bytes after, without ECC (default): 164,968 after, with ECC: 198,008 Signed-off-by: Catalin Patulea <cat@vv.carleton.ca> SVN-Revision: 40297
91 lines
2.6 KiB
Diff
91 lines
2.6 KiB
Diff
--- a/svr-authpubkey.c
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+++ b/svr-authpubkey.c
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@@ -208,17 +208,21 @@ static int checkpubkey(unsigned char* al
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goto out;
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}
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- /* we don't need to check pw and pw_dir for validity, since
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- * its been done in checkpubkeyperms. */
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- len = strlen(ses.authstate.pw_dir);
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- /* allocate max required pathname storage,
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- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
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- filename = m_malloc(len + 22);
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- snprintf(filename, len + 22, "%s/.ssh/authorized_keys",
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- ses.authstate.pw_dir);
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-
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- /* open the file */
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- authfile = fopen(filename, "r");
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+ if (ses.authstate.pw_uid != 0) {
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+ /* we don't need to check pw and pw_dir for validity, since
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+ * its been done in checkpubkeyperms. */
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+ len = strlen(ses.authstate.pw_dir);
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+ /* allocate max required pathname storage,
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+ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
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+ filename = m_malloc(len + 22);
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+ snprintf(filename, len + 22, "%s/.ssh/authorized_keys",
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+ ses.authstate.pw_dir);
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+
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+ /* open the file */
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+ authfile = fopen(filename, "r");
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+ } else {
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+ authfile = fopen("/etc/dropbear/authorized_keys","r");
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+ }
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if (authfile == NULL) {
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goto out;
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}
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@@ -371,26 +375,35 @@ static int checkpubkeyperms() {
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goto out;
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}
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- /* allocate max required pathname storage,
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- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
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- filename = m_malloc(len + 22);
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- strncpy(filename, ses.authstate.pw_dir, len+1);
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-
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- /* check ~ */
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- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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- goto out;
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- }
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-
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- /* check ~/.ssh */
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- strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
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- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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- goto out;
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- }
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-
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- /* now check ~/.ssh/authorized_keys */
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- strncat(filename, "/authorized_keys", 16);
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- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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- goto out;
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+ if (ses.authstate.pw_uid == 0) {
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+ if (checkfileperm("/etc/dropbear") != DROPBEAR_SUCCESS) {
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+ goto out;
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+ }
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+ if (checkfileperm("/etc/dropbear/authorized_keys") != DROPBEAR_SUCCESS) {
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+ goto out;
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+ }
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+ } else {
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+ /* allocate max required pathname storage,
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+ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
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+ filename = m_malloc(len + 22);
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+ strncpy(filename, ses.authstate.pw_dir, len+1);
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+
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+ /* check ~ */
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+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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+ goto out;
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+ }
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+
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+ /* check ~/.ssh */
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+ strncat(filename, "/.ssh", 5); /* strlen("/.ssh") == 5 */
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+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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+ goto out;
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+ }
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+
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+ /* now check ~/.ssh/authorized_keys */
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+ strncat(filename, "/authorized_keys", 16);
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+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
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+ goto out;
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+ }
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}
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/* file looks ok, return success */
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