/*
* Adds repeat field to the time structure of session
* r=<repeat interval> <active duration> <offsets from start-time>
*/
int
sdp_add_repeat(sdp_time_t *time, uint64_t interval, uint64_t duration,
const char *offset)
{
sdp_repeat_t *tmp;
sdp_repeat_t *new_repeat;
int ret = 0;
if (time == NULL || offset == NULL)
return (EINVAL);
new_repeat = calloc(1, sizeof (sdp_repeat_t));
if (new_repeat == NULL)
return (ENOMEM);
new_repeat->r_interval = interval;
new_repeat->r_duration = duration;
if ((ret = sdp_str_to_list(&new_repeat->r_offset, offset,
strlen(offset), B_FALSE)) != 0) {
goto err_ret;
}
tmp = time->t_repeat;
if (tmp == NULL) {
time->t_repeat = new_repeat;
} else {
while (tmp->r_next != NULL)
tmp = tmp->r_next;
tmp->r_next = new_repeat;
}
return (ret);
err_ret:
sdp_free_repeat(new_repeat);
return (ret);
}
void
sdp_free(sdp *session)
{
sdp_media *media, *cmedia;
sdp_attribute *attr, *cattr;
sdp_repeat *repeat, *crepeat;
if(session->username != NULL)
xfree(session->username);
if(session->session_id != NULL)
xfree(session->session_id);
if(session->network != NULL)
sdp_free_network(session->network);
if(session->name != NULL)
xfree(session->name);
if(session->information != NULL)
xfree(session->information);
if(session->uri != NULL)
xfree(session->uri);
if(session->email != NULL)
xfree(session->email);
if(session->phone != NULL)
xfree(session->phone);
if(session->bandwidth_modifier != NULL)
sdp_free_bandwidth_modifier(session->bandwidth_modifier);
if(session->timezones != NULL)
xfree(session->timezones);
if(session->encryption != NULL)
sdp_free_encryption(session->encryption);
repeat = session->repeats;
while(repeat != NULL) {
crepeat = repeat;
repeat = repeat->next;
sdp_free_repeat(crepeat);
}
attr = session->attributes;
while(attr != NULL) {
cattr = attr;
attr = attr->next;
sdp_free_attribute(cattr);
}
media = session->media;
while(media != NULL) {
cmedia = media;
media = media->next;
sdp_free_media(cmedia);
}
if(session->original != NULL)
xfree(session->original);
xfree(session);
}
/*
* repeat-fields (r=)
* Not stand-alone. One or more repeat field appear after time field.
* %x72 "=" repeat-interval SP typed-time 1*(SP typed-time)
* repeat-interval = POS-DIGIT *DIGIT [fixed-len-time-unit]
* typed-time = 1*DIGIT [fixed-len-time-unit]
* fixed-len-time-unit = %x64 / %x68 / %x6d / %x73
*/
static void
sdp_parse_repeat(sdp_time_t *time, const char *begin, const char *end,
uint_t *p_error)
{
const char *current;
sdp_repeat_t *repeat;
sdp_repeat_t *new_repeat;
int ret;
if (*begin++ != COMMP_EQUALS) {
*p_error |= SDP_REPEAT_TIME_ERROR;
return;
}
/*
* A time field should be present before this field can occur, if
* time is NULL then repeat field has occured before time field and
* hence fields are out of order.
*/
if (time == NULL)
return;
/*
* Get the latest time field and associate this repeat field
* with it.
*/
while (time->t_next != NULL)
time = time->t_next;
new_repeat = calloc(1, sizeof (sdp_repeat_t));
if (new_repeat == NULL) {
*p_error |= SDP_MEMORY_ERROR;
return;
}
/*
* for a given time field, there could be several repeat fields
* add the new repeat field at the end of it.
*/
repeat = time->t_repeat;
if (repeat == NULL) {
time->t_repeat = new_repeat;
} else {
while (repeat->r_next != NULL)
repeat = repeat->r_next;
repeat->r_next = new_repeat;
}
/*
* Populate the elements of sdp_repeat.
* Get time-interval
*/
current = begin;
if (commp_find_token(&begin, ¤t, end, COMMP_SP, B_FALSE) != 0)
goto err_ret;
if (commp_time_to_secs(begin, current, &new_repeat->r_interval) != 0)
goto err_ret;
/* Get duration. It could be the last sub-field */
begin = ++current;
if (commp_find_token(&begin, ¤t, end, COMMP_SP, B_FALSE) != 0)
goto err_ret;
if (commp_time_to_secs(begin, current, &new_repeat->r_duration) != 0)
goto err_ret;
++current;
/* Get offsets into sdp_list */
if (current >= end)
goto err_ret;
while (current < end) {
begin = current;
if (commp_find_token(&begin, ¤t, end, COMMP_SP,
B_FALSE) != 0) {
goto err_ret;
}
if ((ret = add_value_to_list(&new_repeat->r_offset, begin,
current - begin, B_FALSE)) != 0) {
if (ret == ENOMEM) {
*p_error |= SDP_MEMORY_ERROR;
return;
} else {
goto err_ret;
}
}
++current;
}
/* check for trailing white space character. */
if (isspace(*(end - 1)))
goto err_ret;
return;
err_ret:
*p_error |= SDP_REPEAT_TIME_ERROR;
if (repeat != NULL)
repeat->r_next = NULL;
else
time->t_repeat = NULL;
sdp_free_repeat(new_repeat);
}
