Mercurial > dropbear

diff svr-authpubkey.c @ 1883:f54451afc046

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use buf_getptr and m_free on every iteration before m_malloc to insure no memory leaks are happening
author HansH111 <hans@atbas.org>
date Tue, 15 Mar 2022 18:57:21 +0000
parents d39cfedaf015
children 5d8dbb6fdab7
line wrap: on
line diff
--- a/svr-authpubkey.c	Sun Mar 13 17:38:38 2022 +0000
+++ b/svr-authpubkey.c	Tue Mar 15 18:57:21 2022 +0000
@@ -356,6 +356,11 @@
 
 	ret = cmp_base64_key(keyblob, keybloblen, (const unsigned char *) algo, algolen, line, NULL);
 
+	/* free pubkey_info if it is filled */
+	if (ses.authstate.pubkey_info) {
+		m_free(ses.authstate.pubkey_info);
+		ses.authstate.pubkey_info = NULL;
+	}
 	if (ret == DROPBEAR_SUCCESS) {
 		if (options_buf) {
 			ret = svr_add_pubkey_options(options_buf, line_num, filename);
@@ -364,11 +369,9 @@
 		if (infolen) {
 			ses.authstate.pubkey_info = m_malloc(infolen + 1);
 			if (ses.authstate.pubkey_info) {
-				strncpy(ses.authstate.pubkey_info, &line->data[infopos], infolen);
+		                strncpy(ses.authstate.pubkey_info,(const char *) buf_getptr(line, infopos), infolen);
 				ses.authstate.pubkey_info[infolen]='\0';
 			}
-		} else {
-			ses.authstate.pubkey_info = NULL;
 		}
 	}