static void parse_time(pj_scanner *scanner, pjmedia_sdp_session *ses,
parse_context *ctx)
{
pj_str_t str;
ctx->last_error = PJMEDIA_SDP_EINTIME;
/* check equal sign */
if (*(scanner->curptr+1) != '=') {
on_scanner_error(scanner);
return;
}
/* t= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* start time */
pj_scan_get_until_ch(scanner, ' ', &str);
ses->time.start = pj_strtoul(&str);
pj_scan_get_char(scanner);
/* stop time */
pj_scan_get_until_chr(scanner, " \t\r", &str);
ses->time.stop = pj_strtoul(&str);
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
}
static pjmedia_sdp_attr *parse_attr( pj_pool_t *pool, pj_scanner *scanner,
parse_context *ctx)
{
pjmedia_sdp_attr *attr;
ctx->last_error = PJMEDIA_SDP_EINATTR;
attr = PJ_POOL_ALLOC_T(pool, pjmedia_sdp_attr);
/* check equal sign */
if (*(scanner->curptr+1) != '=') {
on_scanner_error(scanner);
return NULL;
}
/* skip a= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* get attr name. */
pj_scan_get(scanner, &cs_token, &attr->name);
if (*scanner->curptr && *scanner->curptr != '\r' &&
*scanner->curptr != '\n')
{
/* skip ':' if present. */
if (*scanner->curptr == ':')
pj_scan_get_char(scanner);
/* get value */
if (*scanner->curptr != '\r' && *scanner->curptr != '\n') {
pj_scan_get_until_chr(scanner, "\r\n", &attr->value);
} else {
attr->value.ptr = NULL;
attr->value.slen = 0;
}
} else {
attr->value.ptr = NULL;
attr->value.slen = 0;
}
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
return attr;
}
static void parse_origin(pj_scanner *scanner, pjmedia_sdp_session *ses,
parse_context *ctx)
{
pj_str_t str;
ctx->last_error = PJMEDIA_SDP_EINORIGIN;
/* check equal sign */
if (*(scanner->curptr+1) != '=') {
on_scanner_error(scanner);
return;
}
/* o= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* username. */
pj_scan_get_until_ch(scanner, ' ', &ses->origin.user);
pj_scan_get_char(scanner);
/* id */
pj_scan_get_until_ch(scanner, ' ', &str);
ses->origin.id = pj_strtoul(&str);
pj_scan_get_char(scanner);
/* version */
pj_scan_get_until_ch(scanner, ' ', &str);
ses->origin.version = pj_strtoul(&str);
pj_scan_get_char(scanner);
/* network-type */
pj_scan_get_until_ch(scanner, ' ', &ses->origin.net_type);
pj_scan_get_char(scanner);
/* addr-type */
pj_scan_get_until_ch(scanner, ' ', &ses->origin.addr_type);
pj_scan_get_char(scanner);
/* address */
pj_scan_get_until_chr(scanner, " \t\r", &ses->origin.addr);
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
}
static void parse_generic_line(pj_scanner *scanner, pj_str_t *str,
parse_context *ctx)
{
ctx->last_error = PJMEDIA_SDP_EINSDP;
/* check equal sign */
if (*(scanner->curptr+1) != '=') {
on_scanner_error(scanner);
return;
}
/* x= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* get anything until newline (including whitespaces). */
pj_scan_get_until_chr(scanner, "\r\n", str);
/* newline. */
pj_scan_get_newline(scanner);
}
static void parse_bandwidth_info(pj_scanner *scanner, pjmedia_sdp_bandw *bandw,
parse_context *ctx)
{
pj_str_t str;
ctx->last_error = PJMEDIA_SDP_EINBANDW;
/* b= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* modifier */
pj_scan_get_until_ch(scanner, ':', &bandw->modifier);
pj_scan_get_char(scanner);
/* value */
pj_scan_get_until_chr(scanner, " \t\r\n", &str);
bandw->value = pj_strtoul(&str);
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
}
static void parse_connection_info(pj_scanner *scanner, pjmedia_sdp_conn *conn,
parse_context *ctx)
{
ctx->last_error = PJMEDIA_SDP_EINCONN;
/* c= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* network-type */
pj_scan_get_until_ch(scanner, ' ', &conn->net_type);
pj_scan_get_char(scanner);
/* addr-type */
pj_scan_get_until_ch(scanner, ' ', &conn->addr_type);
pj_scan_get_char(scanner);
/* address. */
pj_scan_get_until_chr(scanner, " \t\r", &conn->addr);
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
}
/* This is a recursive function! */
static pj_xml_node *xml_parse_node( pj_pool_t *pool, pj_scanner *scanner)
{
pj_xml_node *node;
pj_str_t end_name;
PJ_CHECK_STACK();
if (*scanner->curptr != '<')
on_syntax_error(scanner);
/* Handle Processing Instructino (PI) construct (i.e. "<?") */
if (*scanner->curptr == '<' && *(scanner->curptr+1) == '?') {
pj_scan_advance_n(scanner, 2, PJ_FALSE);
for (;;) {
pj_str_t dummy;
pj_scan_get_until_ch(scanner, '?', &dummy);
if (*scanner->curptr=='?' && *(scanner->curptr+1)=='>') {
pj_scan_advance_n(scanner, 2, PJ_TRUE);
break;
} else {
pj_scan_advance_n(scanner, 1, PJ_FALSE);
}
}
return xml_parse_node(pool, scanner);
}
/* Handle comments construct (i.e. "<!") */
if (pj_scan_strcmp(scanner, "<!", 2) == 0) {
pj_scan_advance_n(scanner, 2, PJ_FALSE);
for (;;) {
pj_str_t dummy;
pj_scan_get_until_ch(scanner, '>', &dummy);
if (pj_scan_strcmp(scanner, ">", 1) == 0) {
pj_scan_advance_n(scanner, 1, PJ_TRUE);
break;
} else {
pj_scan_advance_n(scanner, 1, PJ_FALSE);
}
}
return xml_parse_node(pool, scanner);
}
/* Alloc node. */
node = alloc_node(pool);
/* Get '<' */
pj_scan_get_char(scanner);
/* Get node name. */
pj_scan_get_until_chr( scanner, " />\t", &node->name);
/* Get attributes. */
while (*scanner->curptr != '>' && *scanner->curptr != '/') {
pj_xml_attr *attr = alloc_attr(pool);
pj_scan_get_until_chr( scanner, "=> \t", &attr->name);
if (*scanner->curptr == '=') {
pj_scan_get_char( scanner );
pj_scan_get_quotes(scanner, "\"'", "\"'", 2, &attr->value);
/* remove quote characters */
++attr->value.ptr;
attr->value.slen -= 2;
}
pj_list_push_back( &node->attr_head, attr );
}
if (*scanner->curptr == '/') {
pj_scan_get_char(scanner);
if (pj_scan_get_char(scanner) != '>')
on_syntax_error(scanner);
return node;
}
/* Enclosing bracket. */
if (pj_scan_get_char(scanner) != '>')
on_syntax_error(scanner);
/* Sub nodes. */
while (*scanner->curptr == '<' && *(scanner->curptr+1) != '/') {
pj_xml_node *sub_node = xml_parse_node(pool, scanner);
pj_list_push_back( &node->node_head, sub_node );
}
/* Content. */
if (!pj_scan_is_eof(scanner) && *scanner->curptr != '<') {
pj_scan_get_until_ch(scanner, '<', &node->content);
}
/* Enclosing node. */
if (pj_scan_get_char(scanner) != '<' || pj_scan_get_char(scanner) != '/')
on_syntax_error(scanner);
pj_scan_get_until_chr(scanner, " \t>", &end_name);
/* Compare name. */
if (pj_stricmp(&node->name, &end_name) != 0)
on_syntax_error(scanner);
/* Enclosing '>' */
if (pj_scan_get_char(scanner) != '>')
on_syntax_error(scanner);
return node;
}
static void parse_media(pj_scanner *scanner, pjmedia_sdp_media *med,
parse_context *ctx)
{
pj_str_t str;
ctx->last_error = PJMEDIA_SDP_EINMEDIA;
/* check the equal sign */
if (*(scanner->curptr+1) != '=') {
on_scanner_error(scanner);
return;
}
/* m= */
pj_scan_advance_n(scanner, 2, SKIP_WS);
/* type */
pj_scan_get_until_ch(scanner, ' ', &med->desc.media);
pj_scan_get_char(scanner);
/* port */
pj_scan_get(scanner, &cs_token, &str);
med->desc.port = (unsigned short)pj_strtoul(&str);
if (*scanner->curptr == '/') {
/* port count */
pj_scan_get_char(scanner);
pj_scan_get(scanner, &cs_token, &str);
med->desc.port_count = pj_strtoul(&str);
} else {
med->desc.port_count = 0;
}
if (pj_scan_get_char(scanner) != ' ') {
PJ_THROW(SYNTAX_ERROR);
}
/* transport */
pj_scan_get_until_chr(scanner, " \t\r\n", &med->desc.transport);
/* format list */
med->desc.fmt_count = 0;
while (*scanner->curptr == ' ') {
pj_str_t fmt;
pj_scan_get_char(scanner);
/* Check again for the end of the line */
if ((*scanner->curptr == '\r') || (*scanner->curptr == '\n'))
break;
pj_scan_get(scanner, &cs_token, &fmt);
if (med->desc.fmt_count < PJMEDIA_MAX_SDP_FMT)
med->desc.fmt[med->desc.fmt_count++] = fmt;
else
PJ_PERROR(2,(THIS_FILE, PJ_ETOOMANY,
"Error adding SDP media format %.*s, "
"format is ignored",
(int)fmt.slen, fmt.ptr));
}
/* We've got what we're looking for, skip anything until newline */
pj_scan_skip_line(scanner);
}
void get_until_chr(const char *spec, Pj_String *out)
{
pj_scan_get_until_chr(&scanner_, spec, out);
}
