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authorDamien Miller <djm@mindrot.org>2000-03-26 13:04:51 +1000
committerDamien Miller <djm@mindrot.org>2000-03-26 13:04:51 +1000
commit450a7a1ff40fe7c2d84c93b83cf2df53445d807d (patch)
treedb6d08bdea65edd34ba2e323a31e2b1ca5e5fbd4 /match.c
parent2c9279fa667827384fceb243f890cba1dbe480de (diff)
- OpenBSD CVS update
- [auth-krb4.c] -Wall - [auth-rh-rsa.c auth-rsa.c hostfile.c hostfile.h key.c key.h match.c] [match.h ssh.c ssh.h sshconnect.c sshd.c] initial support for DSA keys. ok deraadt@, niels@ - [cipher.c cipher.h] remove unused cipher_attack_detected code - [scp.1 ssh-add.1 ssh-agent.1 ssh-keygen.1 ssh.1 sshd.8] Fix some formatting problems I missed before. - [ssh.1 sshd.8] fix spelling errors, From: FreeBSD - [ssh.c] switch to raw mode only if he _get_ a pty (not if we _want_ a pty).
Diffstat (limited to 'match.c')
-rw-r--r--match.c61
1 files changed, 60 insertions, 1 deletions
diff --git a/match.c b/match.c
index 5386df6c..b72efca7 100644
--- a/match.c
+++ b/match.c
@@ -14,7 +14,7 @@
*/
#include "includes.h"
-RCSID("$Id: match.c,v 1.3 1999/11/25 00:54:59 damien Exp $");
+RCSID("$Id: match.c,v 1.4 2000/03/26 03:04:53 damien Exp $");
#include "ssh.h"
@@ -80,3 +80,62 @@ match_pattern(const char *s, const char *pattern)
}
/* NOTREACHED */
}
+
+/*
+ * Tries to match the host name (which must be in all lowercase) against the
+ * comma-separated sequence of subpatterns (each possibly preceded by ! to
+ * indicate negation). Returns true if there is a positive match; zero
+ * otherwise.
+ */
+
+int
+match_hostname(const char *host, const char *pattern, unsigned int len)
+{
+ char sub[1024];
+ int negated;
+ int got_positive;
+ unsigned int i, subi;
+
+ got_positive = 0;
+ for (i = 0; i < len;) {
+ /* Check if the subpattern is negated. */
+ if (pattern[i] == '!') {
+ negated = 1;
+ i++;
+ } else
+ negated = 0;
+
+ /*
+ * Extract the subpattern up to a comma or end. Convert the
+ * subpattern to lowercase.
+ */
+ for (subi = 0;
+ i < len && subi < sizeof(sub) - 1 && pattern[i] != ',';
+ subi++, i++)
+ sub[subi] = isupper(pattern[i]) ? tolower(pattern[i]) : pattern[i];
+ /* If subpattern too long, return failure (no match). */
+ if (subi >= sizeof(sub) - 1)
+ return 0;
+
+ /* If the subpattern was terminated by a comma, skip the comma. */
+ if (i < len && pattern[i] == ',')
+ i++;
+
+ /* Null-terminate the subpattern. */
+ sub[subi] = '\0';
+
+ /* Try to match the subpattern against the host name. */
+ if (match_pattern(host, sub)) {
+ if (negated)
+ return 0; /* Fail */
+ else
+ got_positive = 1;
+ }
+ }
+
+ /*
+ * Return success if got a positive match. If there was a negative
+ * match, we have already returned zero and never get here.
+ */
+ return got_positive;
+}