[MINOR] Allow to specify a domain for a cookie
This patch allows to specify a domain used when inserting a cookie
providing a session stickiness. Usefull for example with wildcard domains.
The patch adds one new variable to the struct proxy: cookiedomain.
When set the domain is appended to a Set-Cookie header.
Domain name is validated using the new invalid_domainchar() function.
It is basically invalid_char() limited to [A-Za-z0-9_.-]. Yes, the test
is too trivial and does not cover all wrong situations, but the main
purpose is to detect most common mistakes, not intentional abuses.
The underscore ("_") character is not RFC-valid but as it is
often (mis)used so I decided to allow it.
diff --git a/src/standard.c b/src/standard.c
index 7f749f9..a855528 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -141,6 +141,27 @@
}
/*
+ * Checks <domainname> for invalid characters. Valid chars are [A-Za-z0-9_.-].
+ * If an invalid character is found, a pointer to it is returned.
+ * If everything is fine, NULL is returned.
+ */
+const char *invalid_domainchar(const char *name) {
+
+ if (!*name)
+ return name;
+
+ while (*name) {
+ if (!isalnum((int)*name) && *name != '.' &&
+ *name != '_' && *name != '-')
+ return name;
+
+ name++;
+ }
+
+ return NULL;
+}
+
+/*
* converts <str> to a struct sockaddr_in* which is locally allocated.
* The format is "addr:port", where "addr" can be a dotted IPv4 address,
* a host name, or empty or "*" to indicate INADDR_ANY.