ssh-keygen -R is case-sensitive, but should not be

[Griff Miller II]

I guess attachments get stripped out. I'll paste it:

----------------------------------------------------
--- match.c	2016-03-09 12:04:48.000000000 -0600
+++ /home/millerig/osrc/openssh-7.2p2/match.c	2016-04-15
22:50:08.917536100 -0500
@@ -119,10 +119,18 @@
 match_pattern_list(const char *string, const char *pattern, int dolower)
 {
 	char sub[1024];
+	char *low_string = NULL;
 	int negated;
 	int got_positive;
 	u_int i, subi, len = strlen(pattern);

+	if (dolower) {
+		low_string = xmalloc(strlen(string) + 1);
+		for (i = 0; string[i]; ++i)
+			low_string[i] = tolower(string[i]);
+		low_string[i] = '\0';
+	}
+
 	got_positive = 0;
 	for (i = 0; i < len;) {
 		/* Check if the subpattern is negated. */
@@ -142,8 +150,10 @@
 			sub[subi] = dolower && isupper((u_char)pattern[i]) ?
 			    tolower((u_char)pattern[i]) : pattern[i];
 		/* If subpattern too long, return failure (no match). */
-		if (subi >= sizeof(sub) - 1)
+		if (subi >= sizeof(sub) - 1) {
+			free(low_string);
 			return 0;
+		}

 		/* If the subpattern was terminated by a comma, skip the comma. */
 		if (i < len && pattern[i] == ',')
@@ -153,18 +163,20 @@
 		sub[subi] = '\0';

 		/* Try to match the subpattern against the string. */
-		if (match_pattern(string, sub)) {
-			if (negated)
-				return -1;		/* Negative */
-			else
+		if (match_pattern((dolower ? low_string : string), sub)) {
+			if (negated) {
+				got_positive = -1;		/* Negative */
+				break;
+			} else
 				got_positive = 1;	/* Positive */
 		}
 	}

 	/*
-	 * Return success if got a positive match.  If there was a negative
-	 * match, we have already returned -1 and never get here.
+	 * Return success if there was a positive match;
+	 * return -1 if there was a negative match.
 	 */
+	free(low_string);
 	return got_positive;
 }

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