[SR-Dev] git:janakj/kcore: P-Asserted-Identity parser from kamailio core

[Jan Janak]

Module: sip-router
Branch: janakj/kcore
Commit: bbbc6625cef466839d25fd7f95e99d6a6045d645
URL:    http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=bbbc6625cef466839d25fd7f95e99d6a6045d645

Author: Jan Janak <jan at iptel.org>
Committer: Jan Janak <jan at iptel.org>
Date:   Sun Mar 15 17:42:45 2009 +0100

P-Asserted-Identity parser from kamailio core

This patch adds the P-Asserted-Identity parser from the kamailio
core to the libkcore library.

---

 lib/kcore/parse_pai.c |   77 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/kcore/parse_pai.h |   44 ++++++++++++++++++++++++++++
 2 files changed, 121 insertions(+), 0 deletions(-)

diff --git a/lib/kcore/parse_pai.c b/lib/kcore/parse_pai.c
new file mode 100644
index 0000000..b047eb6
--- /dev/null
+++ b/lib/kcore/parse_pai.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2006 Juha Heinanen
+ *
+ * This file is part of Kamailio, a free SIP server.
+ *
+ * Kamailio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version
+ *
+ * Kamailio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License 
+ * along with this program; if not, write to the Free Software 
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*!
+ * \file
+ * \brief P-Asserted-Identity header parser
+ * \ingroup parser
+ */
+
+#include "parse_from.h"
+#include "parse_to.h"
+#include <stdlib.h>
+#include <string.h>
+#include "../dprint.h"
+#include "msg_parser.h"
+#include "../ut.h"
+#include "../mem/mem.h"
+
+/*!
+ * This method is used to parse P-Asserted-Identity header (RFC 3325).
+ *
+ * Currently only one name-addr / addr-spec is supported in the header
+ * and it must contain a sip or sips URI.
+ * \param msg sip msg
+ * \return 0 on success, -1 on failure.
+ */
+int parse_pai_header( struct sip_msg *msg )
+{
+	struct to_body* pai_b;
+
+	if ( !msg->pai && (parse_headers(msg, HDR_PAI_F,0)==-1 || !msg->pai)) {
+		goto error;
+	}
+
+	/* maybe the header is already parsed! */
+	if (msg->pai->parsed)
+		return 0;
+ 
+	/* bad luck! :-( - we have to parse it */
+	/* first, get some memory */
+	pai_b = pkg_malloc(sizeof(struct to_body));
+	if (pai_b == 0) {
+		LM_ERR("out of pkg_memory\n");
+		goto error;
+	}
+ 
+	/* now parse it!! */
+	memset(pai_b, 0, sizeof(struct to_body));
+	parse_to(msg->pai->body.s, msg->pai->body.s + msg->pai->body.len+1, pai_b);
+	if (pai_b->error == PARSE_ERROR) {
+		LM_ERR("bad P-Asserted-Identity header\n");
+		pkg_free(pai_b);
+		goto error;
+	}
+ 	msg->pai->parsed = pai_b;
+ 
+	return 0;
+error:
+	return -1;
+}
diff --git a/lib/kcore/parse_pai.h b/lib/kcore/parse_pai.h
new file mode 100644
index 0000000..f9af2fc
--- /dev/null
+++ b/lib/kcore/parse_pai.h
@@ -0,0 +1,44 @@
+/*
+ *
+ * Copyright (C) 2006 Juha Heinanen
+ *
+ * This file is part of Kamailio, a free SIP server.
+ *
+ * Kamailio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version
+ *
+ * Kamailio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License 
+ * along with this program; if not, write to the Free Software 
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+/*!
+ * \file
+ * \brief P-Asserted-Identity header parser
+ * \ingroup parser
+ */
+
+#ifndef PARSE_PAI_H
+#define PARSE_PAI_H
+
+#include "msg_parser.h"
+
+
+/*! casting macro for accessing P-Asserted-Identity body */
+#define get_pai(p_msg)  ((struct to_body*)(p_msg)->pai->parsed)
+
+
+/*!
+ * P-Asserted-Identity header field parser
+ */
+int parse_pai_header( struct sip_msg *msg);
+
+#endif /* PARSE_PAI_H */