73ef4ff3
 Hu Chunming
提交三方库
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/*
The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
Copyright (C) 2001-2020 Aymeric MOIZARD amoizard@antisip.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <osipparser2/internal.h>
#include <osipparser2/osip_port.h>
#include <osipparser2/osip_parser.h>
#include "parser.h"
static __osip_message_config_t pconfig[NUMBER_OF_HEADERS];
static __osip_message_config_commaseparated_t pconfig_commasep[NUMBER_OF_HEADERS_COMMASEPARATED];
/* The size of the hash table seems large for a limited number of possible entries
* The 'problem' is that the header name are too much alike for the osip_hash() function
* which gives a poor deviation.
* Anyway, this mechanism improves the search time (from binary seach (log(n)) to 1).
*/
#ifndef HASH_TABLE_SIZE
#ifdef __amd64__
#define HASH_TABLE_SIZE 150
#else
#define HASH_TABLE_SIZE \
150 /* set this to the hash table size, 150 is the \
first size where no conflicts occur */
#endif
static int hdr_ref_table[HASH_TABLE_SIZE]; /* the hashtable contains indices to the pconfig table */
/*
list of compact header:
i: Call-ID => ok
m: Contact => ok
e: Content-Encoding => ok
l: Content-Length => ok
c: Content-Type => ok
f: From => ok
s: Subject => NOT A SUPPORTED HEADER! will be
available in the list of unknown headers
t: To => ok
v: Via => ok
*/
/* This method must be called before using the parser */
int parser_init(void) {
int i = 0;
int hname_length = sizeof(pconfig_commasep[0].hname);
memset(pconfig_commasep, 0, sizeof(pconfig_commasep));
/* rfc3261 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "a");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept-Encoding");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept-Language");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Alert-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Allow");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Authentication-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Call-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Contact");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "m");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Content-Encoding");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "e");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Content-Language");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Error-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "In-Reply-To");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Proxy-Require");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Record-Route");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Require");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Route");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Supported");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "k");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Unsupported");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Via");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "v");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Warning");
/* rfc3313 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Media-Authorization");
/* rfc3325 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Asserted-Identity");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Preferred-Identity");
/* rfc3326 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Reason");
/* rfc3327 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Path");
/* rfc3329 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Security-Client");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Security-Server");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Security-Verify");
/* rfc3608 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Service-Route");
/* rfc3841 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Request-Disposition");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "d");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept-Contact");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "a");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Reject-Contact");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "j");
/* rfc4412 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Resource-Priority");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept-Resource-Priority");
/* rfc5009 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Early-Media");
/* rfc5318 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Refused-URI-List");
/* rfc5360 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Permission-Missing");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Trigger-Consent");
/* rfc6050 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Asserted-Service");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Preferred-Service");
/* rfc6086 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Recv-Info");
/* rfc6665 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Allow-Events");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "u");
/* rfc6794 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Policy-ID");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Policy-Contact");
/* rfc6809 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Feature-Caps");
/* rfc7044 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "History-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "Accept");
/* rfc7315 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Associated-URI");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Visited-Network-ID");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Access-Network-Info");
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "P-Charging-Function-Addresses");
/* rfc7433 */
snprintf(pconfig_commasep[i++].hname, hname_length, "%s", "User-to-User");
i = 0;
#ifndef MINISIZE
pconfig[i].hname = ACCEPT;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_accept);
pconfig[i].hname = ACCEPT_ENCODING;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_accept_encoding);
pconfig[i].hname = ACCEPT_LANGUAGE;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_accept_language);
pconfig[i].hname = ALERT_INFO;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_alert_info);
pconfig[i].hname = ALLOW;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_allow);
pconfig[i].hname = AUTHENTICATION_INFO;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_authentication_info);
#endif
pconfig[i].hname = AUTHORIZATION;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_authorization);
pconfig[i].hname = CONTENT_TYPE_SHORT; /* "l" */
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_content_type);
pconfig[i].hname = CALL_ID;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_call_id);
#ifndef MINISIZE
pconfig[i].hname = CALL_INFO;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_call_info);
#endif
pconfig[i].hname = CONTACT;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_contact);
#ifndef MINISIZE
pconfig[i].hname = CONTENT_ENCODING;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_content_encoding);
#endif
pconfig[i].hname = CONTENT_LENGTH;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_content_length);
pconfig[i].hname = CONTENT_TYPE;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_content_type);
pconfig[i].hname = CSEQ;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_cseq);
#ifndef MINISIZE
pconfig[i].hname = CONTENT_ENCODING_SHORT; /* "e" */
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_content_encoding);
pconfig[i].hname = ERROR_INFO;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_error_info);
#endif
pconfig[i].hname = FROM_SHORT; /* "f" */
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_from);
pconfig[i].hname = FROM;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_from);
pconfig[i].hname = CALL_ID_SHORT; /* "i" */
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_call_id);
pconfig[i].hname = CONTENT_LENGTH_SHORT; /* "l" */
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_content_length);
pconfig[i].hname = CONTACT_SHORT; /* "m" */
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_contact);
pconfig[i].hname = MIME_VERSION;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_mime_version);
pconfig[i].hname = PROXY_AUTHENTICATE;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_proxy_authenticate);
#ifndef MINISIZE
pconfig[i].hname = PROXY_AUTHENTICATION_INFO;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_proxy_authentication_info);
#endif
pconfig[i].hname = PROXY_AUTHORIZATION;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_proxy_authorization);
pconfig[i].hname = RECORD_ROUTE;
pconfig[i].ignored_when_invalid = 1; /* best effort - but should be 0 */
pconfig[i++].setheader = (&osip_message_set_record_route);
pconfig[i].hname = ROUTE;
pconfig[i].ignored_when_invalid = 1; /* best effort - but should be 0 */
pconfig[i++].setheader = (&osip_message_set_route);
pconfig[i].hname = TO_SHORT;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_to);
pconfig[i].hname = TO;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_to);
pconfig[i].hname = VIA_SHORT;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_via);
pconfig[i].hname = VIA;
pconfig[i].ignored_when_invalid = 0;
pconfig[i++].setheader = (&osip_message_set_via);
pconfig[i].hname = WWW_AUTHENTICATE;
pconfig[i].ignored_when_invalid = 1;
pconfig[i++].setheader = (&osip_message_set_www_authenticate);
/* build up hash table for fast header lookup */
/* initialize the table */
for (i = 0; i < HASH_TABLE_SIZE; i++) {
hdr_ref_table[i] = -1; /* -1 -> no entry */
}
for (i = 0; i < NUMBER_OF_HEADERS; i++) {
unsigned long hash;
/* calculate hash value using lower case */
/* Fixed: do not lower constant... osip_tolower( pconfig[i].hname ); */
hash = osip_hash(pconfig[i].hname);
hash = hash % HASH_TABLE_SIZE;
if (hdr_ref_table[hash] == -1) {
/* store reference(index) to pconfig table */
hdr_ref_table[hash] = i;
} else {
/* oops, conflict!-> change the hash table or use another hash function size */
OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_ERROR, NULL, "conflict with current hashtable size\n"));
return OSIP_UNDEFINED_ERROR;
}
}
return OSIP_SUCCESS;
}
int parser_add_comma_separated_header(const char *hname) {
int i;
for (i = 0; i < NUMBER_OF_HEADERS_COMMASEPARATED; i++) {
if (pconfig_commasep[i].hname[0] == '\0') {
snprintf(pconfig_commasep[i].hname, sizeof(pconfig_commasep[i].hname), "%s", hname);
return OSIP_SUCCESS;
}
}
return OSIP_UNDEFINED_ERROR;
}
int __osip_message_is_header_comma_separated(const char *hname) {
int i;
for (i = 0; i < NUMBER_OF_HEADERS_COMMASEPARATED; i++) {
if (pconfig_commasep[i].hname[0] == '\0')
break;
if (osip_strcasecmp(pconfig_commasep[i].hname, hname) == 0)
return OSIP_SUCCESS;
}
return OSIP_UNDEFINED_ERROR;
}
/* improved look-up mechanism
precondition: hname is all lowercase */
int __osip_message_is_known_header(const char *hname) {
unsigned long hash;
int result = -1;
int index;
hash = osip_hash(hname);
hash = hash % HASH_TABLE_SIZE;
index = hdr_ref_table[hash];
if ((index != -1) && (0 == strcmp(pconfig[index].hname, hname))) {
result = index;
}
return result;
}
#endif
/* This method calls the method that is able to parse the header */
int __osip_message_call_method(int i, osip_message_t *dest, const char *hvalue) {
int err;
err = pconfig[i].setheader(dest, hvalue);
if (err < 0) {
OSIP_TRACE(osip_trace(__FILE__, __LINE__, OSIP_WARNING, NULL, "Could not set header: %s: %s\n", pconfig[i].hname, hvalue));
}
if (pconfig[i].ignored_when_invalid == 1)
return OSIP_SUCCESS;
return err;
}
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