- dtucker@cvs.openbsd.org 2004/12/06 11:41:03
[auth-rsa.c auth2-pubkey.c authfile.c misc.c misc.h ssh.h sshd.8]
Discard over-length authorized_keys entries rather than complaining when
they don't decode. bz #884, with & ok djm@
diff --git a/misc.c b/misc.c
index 8cb411c..d0cc538 100644
--- a/misc.c
+++ b/misc.c
@@ -23,7 +23,7 @@
*/
#include "includes.h"
-RCSID("$OpenBSD: misc.c,v 1.25 2004/08/11 21:43:05 avsm Exp $");
+RCSID("$OpenBSD: misc.c,v 1.26 2004/12/06 11:41:03 dtucker Exp $");
#include "misc.h"
#include "log.h"
@@ -332,3 +332,26 @@
args->list[args->num++] = xstrdup(buf);
args->list[args->num] = NULL;
}
+
+/*
+ * Read an entire line from a public key file into a static buffer, discarding
+ * lines that exceed the buffer size. Returns 0 on success, -1 on failure.
+ */
+int
+read_keyfile_line(FILE *f, const char *filename, char *buf, size_t bufsz,
+ int *lineno)
+{
+ while (fgets(buf, bufsz, f) != NULL) {
+ (*lineno)++;
+ if (buf[strlen(buf) - 1] == '\n' || feof(f)) {
+ return 0;
+ } else {
+ debug("%s: %s line %d exceeds size limit", __func__,
+ filename, lineno);
+ /* discard remainder of line */
+ while(fgetc(f) != '\n' && !feof(f))
+ ; /* nothing */
+ }
+ }
+ return -1;
+}