[SR-Dev] git:janakj/kcore: Added privacy header parser from kamailio to kcore lib
Jan Janak
jan at iptel.org
Fri Mar 27 09:08:36 CET 2009
Module: sip-router
Branch: janakj/kcore
Commit: c1fe1a0f52caa32f099917a24815d12d199e86d6
URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=c1fe1a0f52caa32f099917a24815d12d199e86d6
Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Jan Janak <jan at iptel.org>
Date: Fri Mar 27 08:25:33 2009 +0100
Added privacy header parser from kamailio to kcore lib
Signed-off-by: Jan Janak <jan at iptel.org>
---
lib/kcore/parse_privacy.c | 226 +++++++++++++++++++++++++++++++++++++++++++++
lib/kcore/parse_privacy.h | 74 +++++++++++++++
2 files changed, 300 insertions(+), 0 deletions(-)
diff --git a/lib/kcore/parse_privacy.c b/lib/kcore/parse_privacy.c
new file mode 100644
index 0000000..6b5e78f
--- /dev/null
+++ b/lib/kcore/parse_privacy.c
@@ -0,0 +1,226 @@
+/*
+ * $Id: parse_privacy.c 4720 2008-08-23 10:56:15Z henningw $
+ *
+ * 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
+ *
+ * History:
+ * -------
+ * 2006-12-18 Introduced parsing of Privacy header (RFC 3323)
+ */
+
+/*!
+ * \file
+ * \brief Privacy value parser
+ * \ingroup parser
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include "../../dprint.h"
+#include "../../trim.h"
+#include "parse_privacy.h"
+#include "../../parser/msg_parser.h"
+
+
+/*!
+ * Parse a privacy value pointed by start that can be at most max_len long.
+ * \return length of matched privacy value on success or NULL otherwise
+ */
+unsigned int parse_priv_value(char* start, unsigned int max_len,
+ unsigned int* value)
+{
+ unsigned int len;
+
+ if (!start || !value) {
+ LM_ERR("invalid parameter value\n");
+ return 0;
+ }
+
+ switch (start[0]) {
+
+ case 'c':
+ case 'C':
+ if(max_len < 8)
+ return 0;
+ if (strncasecmp(start, "critical", 8) == 0) {
+ *value = PRIVACY_CRITICAL;
+ len = 8;
+ break;
+ } else {
+ return 0;
+ }
+
+ case 'h':
+ case 'H':
+ if (max_len < 6)
+ return 0;
+ if (strncasecmp(start, "header", 6) == 0) {
+ *value = PRIVACY_HEADER;
+ len = 6;
+ break;
+ }
+ if (max_len < 7)
+ return 0;
+ if (strncasecmp(start, "history", 7) == 0) {
+ *value = PRIVACY_HISTORY;
+ len = 7;
+ break;
+ } else {
+ return 0;
+ }
+
+ case 'i':
+ case 'I':
+ if(max_len < 2)
+ return 0;
+ if (start[1] == 'd' || start[1] == 'D') {
+ *value = PRIVACY_ID;
+ len = 2;
+ break;
+ } else {
+ return 0;
+ }
+
+ case 'n':
+ case 'N':
+ if(max_len < 4)
+ return 0;
+ if (strncasecmp(start, "none", 4) == 0) {
+ *value = PRIVACY_NONE;
+ len = 4;
+ break;
+ } else {
+ return 0;
+ }
+
+ case 's':
+ case 'S':
+ if(max_len < 7)
+ return 0;
+ if (strncasecmp(start, "session", 7) == 0) {
+ *value = PRIVACY_SESSION;
+ len = 7;
+ break;
+ } else {
+ return 0;
+ }
+
+ case 'u':
+ case 'U':
+ if(max_len < 4)
+ return 0;
+ if (strncasecmp(start, "user", 4) == 0) {
+ *value = PRIVACY_USER;
+ len = 4;
+ break;
+ } else {
+ return 0;
+ }
+
+ default:
+ return 0;
+ }
+
+ if(len < max_len) {
+ if(start[len] != '\0' && start[len] != ';' && start[len] != ' '
+ && start[len] != '\t' && start[len] != '\r' && start[len] != '\n')
+ return 0;
+ }
+
+ return len;
+}
+
+
+/*!
+ * This method is used to parse Privacy HF body, which consist of
+ * comma separated list of priv-values. After parsing, msg->privacy->parsed
+ * contains enum bits of privacy values defined in parse_privacy.h.
+ * \return 0 on success and -1 on failure.
+ */
+int parse_privacy(struct sip_msg *msg)
+{
+ unsigned int val_len, value, values, len;
+ str next;
+ char *p, *beyond;
+
+ /* maybe the header is already parsed! */
+ if (msg->privacy && msg->privacy->parsed)
+ return 0;
+
+ /* parse Privacy HF (there should be only one) */
+ if (!msg->privacy &&
+ (parse_headers(msg, HDR_PRIVACY_F, 0) == -1 || !msg->privacy)) {
+ return -1;
+ }
+
+ next.len = msg->privacy->body.len;
+ next.s = msg->privacy->body.s;
+
+ trim_leading(&next);
+
+ if (next.len == 0) {
+ LM_ERR("no values\n");
+ return -1;
+ }
+
+ values = 0;
+ p = next.s;
+ len = next.len;
+ beyond = p + len;
+
+ while (p < beyond) {
+ if((val_len = parse_priv_value(p, len, &value)) != 0) {
+ values |= value;
+ p = p + val_len;
+ len = len - val_len;
+ } else {
+ LM_ERR("invalid privacy value\n");
+ return -1;
+ }
+
+ while(p < beyond && (*p == ' ' || *p == '\t'
+ || *p == '\r' || *p == '\n'))
+ p++;
+
+ if(p >= beyond) break;
+
+ if (*p == ';') {
+ p++;
+ while(p < beyond && (*p == ' ' || *p == '\t'
+ || *p == '\r' || *p == '\n'))
+ p++;
+ if(p >= beyond) {
+ LM_ERR("no privacy value after comma\n");
+ return -1;
+ }
+ } else {
+ LM_ERR("semicolon expected\n");
+ return -1;
+ }
+ }
+
+ if ((values & PRIVACY_NONE) && (values ^ PRIVACY_NONE)) {
+ LM_ERR("no other privacy values allowed with 'none'\n");
+ return -1;
+ }
+
+ msg->privacy->parsed = (void *)(long)values;
+
+ return 0;
+}
diff --git a/lib/kcore/parse_privacy.h b/lib/kcore/parse_privacy.h
new file mode 100644
index 0000000..41a46ad
--- /dev/null
+++ b/lib/kcore/parse_privacy.h
@@ -0,0 +1,74 @@
+/*
+ * $Id: parse_privacy.h 4720 2008-08-23 10:56:15Z henningw $
+ *
+ * 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 Privacy value parser
+ * \ingroup parser
+ */
+
+#ifndef PARSE_PRIVACY_H
+#define PARSE_PRIVACY_H
+
+#include "../../mem/mem.h"
+#include "../../parser/msg_parser.h"
+
+
+/*! bitmap of Privacy header privacy values
+ * (http://www.iana.org/assignments/sip-priv-values)
+ */
+enum privacy_value {
+ PRIVACY_USER=1,
+ PRIVACY_HEADER=2,
+ PRIVACY_SESSION=4,
+ PRIVACY_NONE=8,
+ PRIVACY_CRITICAL=16,
+ PRIVACY_ID=32,
+ PRIVACY_HISTORY=64
+};
+
+
+/*!
+ * casting macro for accessing enumeration of priv-values
+ */
+#define get_privacy_values(p_msg) \
+ ((unsigned int)(long)((p_msg)->privacy->parsed))
+
+
+/*!
+ * This method is used to parse Privacy HF body, which consist of
+ * comma separated list of priv-values. After parsing, msg->privacy->parsed
+ * contains enum bits of privacy values defined in parse_privacy.h.
+ * \return 0 on success and -1 on failure.
+ */
+int parse_privacy(struct sip_msg *msg);
+
+
+/*!
+ * Parse a privacy value pointed by start that can be at most max_len long.
+ * \return length of matched privacy value on success or NULL otherwise
+ */
+unsigned int parse_priv_value(char* start, unsigned int max_len,
+ unsigned int* value);
+
+
+#endif /* PARSE_PRIVACY_H */
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