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

[Jan Janak]

Module: sip-router
Branch: janakj/kcore
Commit: 822a61e21b628272861a1dad6ba571acdf819c8b
URL:    http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=822a61e21b628272861a1dad6ba571acdf819c8b

Author: Jan Janak <jan at iptel.org>
Committer: Jan Janak <jan at iptel.org>
Date:   Sun Mar 15 17:55:11 2009 +0100

Adding P-Preferred-Identity header parser from kamailio core

---

 lib/kcore/parse_ppi.c |  122 +++++++++++++++++++++++++++++++++++++++++++++++++
 lib/kcore/parse_ppi.h |   52 +++++++++++++++++++++
 2 files changed, 174 insertions(+), 0 deletions(-)

diff --git a/lib/kcore/parse_ppi.c b/lib/kcore/parse_ppi.c
new file mode 100644
index 0000000..791c3aa
--- /dev/null
+++ b/lib/kcore/parse_ppi.c
@@ -0,0 +1,122 @@
+/*
+ * $Id$
+ *
+ * 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-Preferred-Identity header parser
+ * \ingroup parser
+ */
+
+#include "parse_ppi.h"
+#include "parse_to.h"
+#include "parse_uri.h"
+#include <stdlib.h>
+#include <string.h>
+#include "../dprint.h"
+#include "msg_parser.h"
+#include "../ut.h"
+#include "../errinfo.h"
+#include "../mem/mem.h"
+
+
+/*!
+ * \brief This method is used to parse P-Preferred-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_ppi_header( struct sip_msg *msg )
+{
+    struct to_body* ppi_b;
+
+    if ( !msg->ppi &&
+	 (parse_headers(msg, HDR_PPI_F,0)==-1 || !msg->ppi)) {
+	goto error;
+    }
+ 
+    /* maybe the header is already parsed! */
+    if (msg->ppi->parsed)
+	return 0;
+ 
+    /* bad luck! :-( - we have to parse it */
+    /* first, get some memory */
+    ppi_b = pkg_malloc(sizeof(struct to_body));
+    if (ppi_b == 0) {
+	LM_ERR("out of pkg_memory\n");
+	goto error;
+    }
+ 
+    /* now parse it!! */
+    memset(ppi_b, 0, sizeof(struct to_body));
+    parse_to(msg->ppi->body.s,
+	     msg->ppi->body.s + msg->ppi->body.len+1,
+	     ppi_b);
+    if (ppi_b->error == PARSE_ERROR) {
+	LM_ERR("bad P-Preferred-Identity header\n");
+	pkg_free(ppi_b);
+	goto error;
+    }
+ 	msg->ppi->parsed = ppi_b;
+ 
+ 	return 0;
+ error:
+ 	return -1;
+}
+
+
+/*!
+ * \brief Parse P-Preferred-Identity header URI
+ */
+struct sip_uri *parse_ppi_uri(struct sip_msg *msg)
+{
+	struct to_body *tb = NULL;
+	
+	if(msg==NULL)
+		return NULL;
+
+	if(parse_ppi_header(msg)<0)
+	{
+		LM_ERR("cannot parse P-P-I header\n");
+		return NULL;
+	}
+	
+	if(msg->ppi==NULL || get_ppi(msg)==NULL)
+		return NULL;
+
+	tb = get_ppi(msg);
+
+	if(tb->parsed_uri.user.s!=NULL || tb->parsed_uri.host.s!=NULL)
+		return &tb->parsed_uri;
+
+	if (parse_uri(tb->uri.s, tb->uri.len , &tb->parsed_uri)<0)
+	{
+		LM_ERR("failed to parse P-P-I URI\n");
+		memset(&tb->parsed_uri, 0, sizeof(struct sip_uri));
+		set_err_info(OSER_EC_PARSER, OSER_EL_MEDIUM, "error parsing P-P-I URI");
+		set_err_reply(400, "bad P-Preferred-Identity uri");
+		return NULL;
+	}
+
+	return &tb->parsed_uri;
+}
diff --git a/lib/kcore/parse_ppi.h b/lib/kcore/parse_ppi.h
new file mode 100644
index 0000000..ff0d26c
--- /dev/null
+++ b/lib/kcore/parse_ppi.h
@@ -0,0 +1,52 @@
+/*
+ * $Id$
+ *
+ * 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-Preferred-Identity header parser
+ * \ingroup parser
+ */
+
+#ifndef PARSE_PPI_H
+#define PARSE_PPI_H
+
+#include "msg_parser.h"
+
+
+/*! casting macro for accessing P-Preferred-Identity body */
+#define get_ppi(p_msg)  ((struct to_body*)(p_msg)->ppi->parsed)
+
+
+/*!
+ * \brief This method is used to parse P-Preferred-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_ppi_header( struct sip_msg *msg);
+
+struct sip_uri *parse_ppi_uri(struct sip_msg *msg);
+ 
+#endif /* PARSE_PPI_H */