From ce8c9bf266578f5e8e510220334091aa5bf90a9a Mon Sep 17 00:00:00 2001
From: "Alfred E. Heggestad" <aeh@db.org>
Date: Sat, 22 Feb 2014 07:36:01 +0000
Subject: [PATCH] forgot to add msg module

---
 include/re_msg.h | 21 +++++++++++++++
 src/msg/ctype.c  | 62 ++++++++++++++++++++++++++++++++++++++++++
 src/msg/mod.mk   |  8 ++++++
 src/msg/param.c  | 70 ++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 161 insertions(+)
 create mode 100644 include/re_msg.h
 create mode 100644 src/msg/ctype.c
 create mode 100644 src/msg/mod.mk
 create mode 100644 src/msg/param.c

diff --git a/include/re_msg.h b/include/re_msg.h
new file mode 100644
index 0000000..9c52ee9
--- /dev/null
+++ b/include/re_msg.h
@@ -0,0 +1,21 @@
+/**
+ * @file re_msg.h  Interface to generic message components
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+
+
+/** Content-Type */
+struct msg_ctype {
+	struct pl type;
+	struct pl subtype;
+	struct pl params;
+};
+
+
+int  msg_ctype_decode(struct msg_ctype *ctype, const struct pl *pl);
+bool msg_ctype_cmp(const struct msg_ctype *ctype,
+		   const char *type, const char *subtype);
+
+int msg_param_decode(const struct pl *pl, const char *name, struct pl *val);
+int msg_param_exists(const struct pl *pl, const char *name, struct pl *end);
diff --git a/src/msg/ctype.c b/src/msg/ctype.c
new file mode 100644
index 0000000..710f2c7
--- /dev/null
+++ b/src/msg/ctype.c
@@ -0,0 +1,62 @@
+/**
+ * @file ctype.c  Content-Type decode
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+#include <re_types.h>
+#include <re_fmt.h>
+#include <re_msg.h>
+
+
+/**
+ * Decode a pointer-length string into Content-Type header
+ *
+ * @param ctype Content-Type header
+ * @param pl    Pointer-length string
+ *
+ * @return 0 for success, otherwise errorcode
+ */
+int msg_ctype_decode(struct msg_ctype *ctype, const struct pl *pl)
+{
+	struct pl ws;
+
+	if (!ctype || !pl)
+		return EINVAL;
+
+	if (re_regex(pl->p, pl->l,
+		     "[ \t\r\n]*[^ \t\r\n;/]+[ \t\r\n]*/[ \t\r\n]*[^ \t\r\n;]+"
+		     "[^]*",
+		     &ws, &ctype->type, NULL, NULL, &ctype->subtype,
+		     &ctype->params))
+		return EBADMSG;
+
+	if (ws.p != pl->p)
+		return EBADMSG;
+
+	return 0;
+}
+
+
+/**
+ * Compare Content-Type
+ *
+ * @param ctype   Content-Type header
+ * @param type    Media type
+ * @param subtype Media sub-type
+ *
+ * @return true if match, false if no match
+ */
+bool msg_ctype_cmp(const struct msg_ctype *ctype,
+		   const char *type, const char *subtype)
+{
+	if (!ctype || !type || !subtype)
+		return false;
+
+	if (pl_strcasecmp(&ctype->type, type))
+		return false;
+
+	if (pl_strcasecmp(&ctype->subtype, subtype))
+		return false;
+
+	return true;
+}
diff --git a/src/msg/mod.mk b/src/msg/mod.mk
new file mode 100644
index 0000000..8f81b73
--- /dev/null
+++ b/src/msg/mod.mk
@@ -0,0 +1,8 @@
+#
+# mod.mk
+#
+# Copyright (C) 2010 Creytiv.com
+#
+
+SRCS	+= msg/ctype.c
+SRCS	+= msg/param.c
diff --git a/src/msg/param.c b/src/msg/param.c
new file mode 100644
index 0000000..1974b82
--- /dev/null
+++ b/src/msg/param.c
@@ -0,0 +1,70 @@
+/**
+ * @file param.c  SIP Parameter decode
+ *
+ * Copyright (C) 2010 Creytiv.com
+ */
+#include <re_types.h>
+#include <re_fmt.h>
+#include <re_msg.h>
+
+
+/**
+ * Check if a parameter exists
+ *
+ * @param pl   Pointer-length string
+ * @param name Parameter name
+ * @param val  Returned parameter value
+ *
+ * @return 0 for success, otherwise errorcode
+ */
+int msg_param_exists(const struct pl *pl, const char *name, struct pl *val)
+{
+	struct pl v1, v2;
+	char xpr[128];
+
+	if (!pl || !name || !val)
+		return EINVAL;
+
+	(void)re_snprintf(xpr, sizeof(xpr), ";[ \t\r\n]*%s[ \t\r\n;=]*", name);
+
+	if (re_regex(pl->p, pl->l, xpr, &v1, &v2))
+		return ENOENT;
+
+	if (!v2.l && v2.p < pl->p + pl->l)
+		return ENOENT;
+
+	val->p = v1.p - 1;
+	val->l = v2.p - val->p;
+
+	return 0;
+}
+
+
+/**
+ * Decode a Parameter
+ *
+ * @param pl   Pointer-length string
+ * @param name Parameter name
+ * @param val  Returned parameter value
+ *
+ * @return 0 for success, otherwise errorcode
+ */
+int msg_param_decode(const struct pl *pl, const char *name, struct pl *val)
+{
+	char expr[128];
+	struct pl v;
+
+	if (!pl || !name || !val)
+		return EINVAL;
+
+	(void)re_snprintf(expr, sizeof(expr),
+			  ";[ \t\r\n]*%s[ \t\r\n]*=[ \t\r\n]*[~ \t\r\n;]+",
+			  name);
+
+	if (re_regex(pl->p, pl->l, expr, NULL, NULL, NULL, &v))
+		return ENOENT;
+
+	*val = v;
+
+	return 0;
+}