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SIP uri parsing cleanup

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Now, the scheme passed to parse_uri can either be a
single scheme, or a list of schemes ',' delimited.
This gets rid of the whole problem of having to create
two buffers and calling parse_uri twice to check for
separate schemes.

Review: https://reviewboard.asterisk.org/r/343/



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@215522 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
David Vossel
2009-09-02 17:26:40 +00:00
parent d7f27e6705
commit 5537a4babe
1 changed files with 38 additions and 55 deletions
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93
channels/chan_sip.c
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@@ -4265,6 +4265,7 @@ static char *get_in_brackets(char *tmp)
* \note
* - If scheme is specified, drop it from the top.
* - If a component is not requested, do not split around it.
* - Multiple scheme's can be specified ',' delimited. ex: "sip,sips"
*
* This means that if we don't have domain, we cannot split
* name:pass and domain:port.
@@ -4278,7 +4279,7 @@ static char *get_in_brackets(char *tmp)
* \endverbatim
*
*/
static int parse_uri(char *uri, char *scheme,
static int parse_uri(char *uri, const char *scheme,
char **ret_name, char **pass, char **domain, char **port, char **options, char **transport)
{
char *name = NULL;
@@ -4290,11 +4291,18 @@ static int parse_uri(char *uri, char *scheme,
if (port)
*port = "";
if (scheme) {
int l = strlen(scheme);
if (!strncasecmp(uri, scheme, l))
uri += l;
else {
ast_debug(1, "Missing scheme '%s' in '%s'\n", scheme, uri);
int l;
char *scheme2 = ast_strdupa(scheme);
char *cur = strsep(&scheme2, ",");
for (; !ast_strlen_zero(cur); cur = strsep(&scheme2, ",")) {
l = strlen(cur);
if (!strncasecmp(uri, cur, l)) {
uri += l;
break;
}
}
if (ast_strlen_zero(cur)) {
ast_debug(1, "No supported scheme found in '%s' using the scheme[s] %s\n", uri, scheme);
error = -1;
}
}
@@ -12192,42 +12200,33 @@ static int __set_address_from_contact(const char *fullcontact, struct sockaddr_i
{
struct hostent *hp;
struct ast_hostent ahp;
int port;
char *host, *pt;
int port = STANDARD_SIP_PORT;
char *host, *pt, *transport;
char contact_buf[256];
char contact2_buf[256];
char *contact, *contact2;
char *contact;
int use_tls = FALSE;
/* Work on a copy */
ast_copy_string(contact_buf, fullcontact, sizeof(contact_buf));
ast_copy_string(contact2_buf, fullcontact, sizeof(contact2_buf));
contact = contact_buf;
contact2 = contact2_buf;
/* We have only the part in <brackets> here so we just need to parse a SIP URI.*/
/*
* We have only the part in <brackets> here so we just need to parse a SIP URI.
*
* Note: The outbound proxy could be using UDP between the proxy and Asterisk.
* We still need to be able to send to the remote agent through the proxy.
*/
/*! \brief This code is wrong, it assumes that the contact we receive will use the
same transport as the request. It's not a valid assumption. The contact for
a udp connection can be a SIPS uri, or request ;transport=tcp
\todo Fix this buggy code. It doesn't even parse transport!!!!
Note: The outbound proxy could be using UDP between the proxy and Asterisk.
We still need to be able to send to the remote agent through the proxy.
*/
if (tcp) {
if (!parse_uri(contact, "sips:", &contact, NULL, &host, &pt, NULL, NULL)) {
if (!parse_uri(contact, "sip,sips", &contact, NULL, &host, &pt, NULL, &transport)) {
if (((get_transport_str2enum(transport) == SIP_TRANSPORT_TLS)) ||
!(strncasecmp(fullcontact, "sips", 4))) {
use_tls = TRUE;
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_TLS_PORT;
} else {
if (parse_uri(contact2, "sip:", &contact, NULL, &host, &pt, NULL, NULL))
ast_log(LOG_NOTICE, "'%s' is not a valid SIP contact (missing sip:) trying to use anyway\n", contact);
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_SIP_PORT;
}
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_TLS_PORT;
/*! \todo XXX why are we setting TLS port if there's no port given? parse_uri needs to return the transport. */
} else {
if (parse_uri(contact, "sip:", &contact, NULL, &host, &pt, NULL, NULL))
ast_log(LOG_NOTICE, "'%s' is not a valid SIP contact (missing sip:) trying to use anyway\n", contact);
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_SIP_PORT;
ast_log(LOG_WARNING, "Invalid contact uri %s (missing sip: or sips:), attempting to use anyway\n", fullcontact);
}
/* XXX This could block for a long time XXX */
@@ -12269,7 +12268,7 @@ static enum parse_register_result parse_register_contact(struct sip_pvt *pvt, st
char data[SIPBUFSIZE];
const char *expires = get_header(req, "Expires");
int expire = atoi(expires);
char *curi, *host, *pt, *curi2, *transport;
char *curi, *host, *pt, *transport;
int port;
int transport_type;
const char *useragent;
@@ -12299,7 +12298,6 @@ static enum parse_register_result parse_register_contact(struct sip_pvt *pvt, st
if (strchr(contact, '<') == NULL) /* No <, check for ; and strip it */
strsep(&curi, ";"); /* This is Header options, not URI options */
curi = get_in_brackets(contact);
curi2 = ast_strdupa(curi);
/* if they did not specify Contact: or Expires:, they are querying
what we currently have stored as their contact address, so return
@@ -12340,16 +12338,8 @@ static enum parse_register_result parse_register_contact(struct sip_pvt *pvt, st
ast_string_field_build(pvt, our_contact, "<%s>", curi);
/* Make sure it's a SIP URL */
if (pvt->socket.type == SIP_TRANSPORT_TLS) {
if (parse_uri(curi, "sips:", &curi, NULL, &host, &pt, NULL, &transport)) {
if (parse_uri(curi2, "sip:", &curi, NULL, &host, &pt, NULL, &transport))
ast_log(LOG_NOTICE, "Not a valid SIP contact (missing sip:) trying to use anyway\n");
}
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_TLS_PORT;
} else {
if (parse_uri(curi, "sip:", &curi, NULL, &host, &pt, NULL, &transport))
ast_log(LOG_NOTICE, "Not a valid SIP contact (missing sip:) trying to use anyway\n");
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_SIP_PORT;
if (parse_uri(curi, "sip,sips", &curi, NULL, &host, &pt, NULL, &transport)) {
ast_log(LOG_NOTICE, "Not a valid SIP contact (missing sip:) trying to use anyway\n");
}
/* handle the transport type specified in Contact header. */
@@ -12359,8 +12349,11 @@ static enum parse_register_result parse_register_contact(struct sip_pvt *pvt, st
* same transport used by the pvt struct for the Register dialog. */
if (ast_strlen_zero(pt)) {
port = (transport_type == SIP_TRANSPORT_TLS) ? STANDARD_TLS_PORT : STANDARD_SIP_PORT;
} else {
port = atoi(pt);
}
} else {
port = !ast_strlen_zero(pt) ? atoi(pt) : STANDARD_SIP_PORT;
transport_type = pvt->socket.type;
}
@@ -14271,7 +14264,7 @@ static enum check_auth_result check_user_full(struct sip_pvt *p, struct sip_requ
char from[256];
char *dummy; /* dummy return value for parse_uri */
char *domain; /* dummy return value for parse_uri */
char *of, *of2;
char *of;
enum check_auth_result res;
char calleridname[50];
char *uri2 = ast_strdupa(uri);
@@ -14304,19 +14297,9 @@ static enum check_auth_result check_user_full(struct sip_pvt *p, struct sip_requ
/* save the URI part of the From header */
ast_string_field_set(p, from, of);
of2 = ast_strdupa(of);
/* ignore all fields but name */
/*! \todo Samme logical error as in many places above. Need a generic function for this.
*/
if (p->socket.type == SIP_TRANSPORT_TLS) {
if (parse_uri(of, "sips:", &of, &dummy, &domain, &dummy, &dummy, NULL)) {
if (parse_uri(of2, "sip:", &of, &dummy, &domain, &dummy, &dummy, NULL))
ast_log(LOG_NOTICE, "From address missing 'sip:', using it anyway\n");
}
} else {
if (parse_uri(of, "sip:", &of, &dummy, &domain, &dummy, &dummy, NULL))
ast_log(LOG_NOTICE, "From address missing 'sip:', using it anyway\n");
if (parse_uri(of, "sip,sips", &of, &dummy, &domain, &dummy, &dummy, NULL)) {
ast_log(LOG_NOTICE, "From address missing 'sip:', using it anyway\n");
}
if (ast_strlen_zero(of)) {