int msrp_parse_headers(msrp_frame_t *mf)
{
char *e; /* end of message */
char *l; /* end of line */
char *p; /* searched location */
char *s; /* start for search */
msrp_hdr_t *hdr;
msrp_hdr_t *last;
/* already parsed?!? */
if(mf->headers != NULL)
return 0;
last = NULL;
mf->hbody.s = mf->fline.buf.s + mf->fline.buf.len;
e = mf->buf.s + mf->buf.len;
s = mf->hbody.s;
p = s;
while(p!=NULL)
{
l = q_memchr(s, '\n', e - s);
if(l==NULL) {
LM_ERR("broken msrp frame message\n");
return -1;
}
p = q_memchr(s, ':', l - s);
if(p==NULL)
{
/* line without ':' - end of headers */
if(s[0]=='-')
{
mf->endline.len = 7 + mf->fline.transaction.len + 1 + 2;
/* check if it is end-line (i.e., no msg body) */
if((l-s+1 == mf->endline.len)
&& strncmp(s, "-------", 7)==0
&& strncmp(s+7, mf->fline.transaction.s,
mf->fline.transaction.len)==0)
{
mf->hbody.len = s - mf->hbody.s;
mf->endline.s = s;
goto ateoh;
}
mf->endline.len = 0;
LM_ERR("mismatch msrp frame message eoh endline\n");
return -1;
} else if (s[0]=='\r' || s[0]=='\n') {
mf->hbody.len = s - mf->hbody.s;
mf->mbody.s = l + 1;
goto ateoh;
}
LM_ERR("broken msrp frame message eoh\n");
return -1;
}
/* new header */
hdr = (msrp_hdr_t*)pkg_malloc(sizeof(msrp_hdr_t));
if(hdr==NULL)
{
LM_ERR("no more pkg\n");
return -1;
}
memset(hdr, 0, sizeof(msrp_hdr_t));
hdr->buf.s = s;
hdr->buf.len = l - s + 1;
hdr->name.s = s;
hdr->name.len = p - s;
hdr->body.s = p + 1;
hdr->body.len = l - p - 1;
trim(&hdr->body);
if(last==NULL)
{
mf->headers = hdr;
last = hdr;
} else {
last->next = hdr;
last = hdr;
}
msrp_hdr_set_type(hdr);
LM_DBG("MSRP Header: (%p) [%.*s] [%d] [%.*s]\n",
hdr, hdr->name.len, hdr->name.s, hdr->htype,
hdr->body.len, hdr->body.s);
s = l + 1;
}
ateoh:
if(mf->mbody.s!=NULL)
{
/* last header must be Content-Type */
/* get now body.len and endline */
mf->endline.len = 7 + mf->fline.transaction.len + 1 + 2;
mf->endline.s = e - mf->endline.len;
s = mf->endline.s;
if(s[-1]!='\n')
{
LM_ERR("broken msrp frame message body endline\n");
return -1;
}
if(strncmp(s, "-------", 7)==0
&& strncmp(s+7, mf->fline.transaction.s,
mf->fline.transaction.len)==0)
{
mf->mbody.len = s - mf->mbody.s;
LM_DBG("MSRP Body: [%d] [[\n%.*s\n]]\n",
mf->mbody.len, mf->mbody.len, mf->mbody.s);
return 0;
}
LM_ERR("mismatch msrp frame message body endline\n");
return -1;
}
return 0;
}
int msrp_parse_headers(msrp_frame_t *mf)
{
char *e; /* end of message */
char *l; /* end of line */
char *p; /* searched location */
char *s; /* start for search */
msrp_hdr_t *hdr;
msrp_hdr_t *last;
int fpath = 0; /* From path set */
int tpath = 0; /* To path set */
int any = 0; /* Any header set */
/* already parsed?!? */
if(mf->headers != NULL)
return 0;
last = NULL;
mf->hbody.s = mf->fline.buf.s + mf->fline.buf.len;
e = mf->buf.s + mf->buf.len;
s = mf->hbody.s;
p = s;
while(p!=NULL)
{
l = q_memchr(s, '\n', e - s);
if(l==NULL) {
LM_ERR("broken msrp frame message\n");
return -1;
}
p = q_memchr(s, ':', l - s);
if(p==NULL)
{
/* line without ':' - end of headers */
if(s[0]=='-')
{
mf->endline.len = 7 + mf->fline.transaction.len + 1 + 2;
/* check if it is end-line (i.e., no msg body) */
if((l-s+1 == mf->endline.len)
&& strncmp(s, "-------", 7)==0
&& strncmp(s+7, mf->fline.transaction.s,
mf->fline.transaction.len)==0)
{
mf->hbody.len = s - mf->hbody.s;
mf->endline.s = s;
goto ateoh;
}
mf->endline.len = 0;
LM_ERR("mismatch msrp frame message eoh endline\n");
return -1;
} else if (s[0]=='\r' || s[0]=='\n') {
mf->hbody.len = s - mf->hbody.s;
mf->mbody.s = l + 1;
goto ateoh;
}
LM_ERR("broken msrp frame message eoh\n");
return -1;
}
/* new header */
hdr = (msrp_hdr_t*)pkg_malloc(sizeof(msrp_hdr_t));
if(hdr==NULL)
{
LM_ERR("no more pkg\n");
return -1;
}
memset(hdr, 0, sizeof(msrp_hdr_t));
hdr->buf.s = s;
hdr->buf.len = l - s + 1;
hdr->name.s = s;
hdr->name.len = p - s;
hdr->body.s = p + 1;
hdr->body.len = l - p - 1;
trim(&hdr->body);
if(last==NULL)
{
mf->headers = hdr;
last = hdr;
} else {
last->next = hdr;
last = hdr;
}
msrp_hdr_set_type(hdr);
/* Checking for well-formed MSRP rfc4975 messages */
if (hdr->htype == MSRP_HDR_TO_PATH) {
if (tpath) {
LM_ERR("broken msrp frame message, Multiple To-Path not allowed.\n");
return -1;
} else if (fpath || any) {
LM_ERR("broken msrp frame message, To-Path must be the first header.\n");
return -1;
} else {
tpath = 1;
}
} else if (hdr->htype == MSRP_HDR_FROM_PATH) {
if (fpath) {
LM_ERR("broken msrp frame message, Multiple From-Path not allowed.\n");
return -1;
} else if (!tpath || any) {
LM_ERR("broken msrp frame message, From-Path must be after To-Path.\n");
return -1;
} else {
fpath = 1;
}
} else {
if (!tpath || !fpath) {
LM_ERR("broken msrp frame message, To-Path and From-Path must be defined before any header.\n");
return -1;
} else {
any = 1;
}
}
LM_DBG("MSRP Header: (%p) [%.*s] [%d] [%.*s]\n",
hdr, hdr->name.len, hdr->name.s, hdr->htype,
hdr->body.len, hdr->body.s);
s = l + 1;
}
if (!tpath || !fpath) {
LM_ERR("broken msrp frame message, To-Path and From-Path must be defined.\n");
return -1;
}
ateoh:
if(mf->mbody.s!=NULL)
{
/* last header must be Content-Type */
/* get now body.len and endline */
mf->endline.len = 7 + mf->fline.transaction.len + 1 + 2;
mf->endline.s = e - mf->endline.len;
s = mf->endline.s;
if(s[-1]!='\n')
{
LM_ERR("broken msrp frame message body endline\n");
return -1;
}
if(strncmp(s, "-------", 7)==0
&& strncmp(s+7, mf->fline.transaction.s,
mf->fline.transaction.len)==0)
{
mf->mbody.len = s - mf->mbody.s;
LM_DBG("MSRP Body: [%d] [[\n%.*s\n]]\n",
mf->mbody.len, mf->mbody.len, mf->mbody.s);
return 0;
}
LM_ERR("mismatch msrp frame message body endline\n");
return -1;
}
return 0;
}
