/* if we get OC_EDATADDS error, then try to capture any
error message and log it; assumes that in this case,
the datadds is not big.
*/
void
ocdataddsmsg(OCstate* state, OCtree* tree)
{
#define ERRCHUNK 1024
#define ERRFILL ' '
#define ERRTAG "Error {"
int i,j;
size_t len;
XXDR* xdrs;
char* contents;
off_t ckp;
if(tree == NULL) return;
/* get available space */
xdrs = tree->data.xdrs;
len = xxdr_length(xdrs);
if(len < strlen(ERRTAG))
return; /* no room */
ckp = xxdr_getpos(xdrs);
xxdr_setpos(xdrs,(off_t)0);
/* read the whole thing */
contents = (char*)malloc(len+1);
(void)xxdr_getbytes(xdrs,contents,(off_t)len);
contents[len] = '\0';
/* Look for error tag */
for(i=0;i<len;i++) {
if(ocstrncmp(contents+i,ERRTAG,strlen(ERRTAG))==0) {
/* log the error message */
/* Do a quick and dirty escape */
for(j=i;j<len;j++) {
int c = contents[i+j];
if(c > 0 && (c < ' ' || c >= '\177'))
contents[i+j] = ERRFILL;
}
oclog(OCLOGERR,"DATADDS failure, possible message: '%s'\n",
contents+i);
goto done;
}
}
xxdr_setpos(xdrs,ckp);
done:
return;
}
static int
dataError(XXDR* xdrs, OCstate* state)
{
int depth=0;
int errfound = 0;
off_t ckp=0,avail=0;
int i=0;
char* errmsg = NULL;
char errortext[16]; /* bigger thant |ERROR_TAG|*/
avail = xxdr_getavail(xdrs);
if(avail < strlen(ERROR_TAG))
goto done; /* assume it is ok */
ckp = xxdr_getpos(xdrs);
/* Read enough characters to test for 'ERROR ' */
errortext[0] = '\0';
xxdr_getbytes(xdrs,errortext,(off_t)strlen(ERROR_TAG));
if(ocstrncmp(errortext,ERROR_TAG,strlen(ERROR_TAG)) != 0)
goto done; /* not an immediate error */
/* Try to locate the whole error body */
xxdr_setpos(xdrs,ckp);
for(depth=0,i=0;i<avail;i++) {
xxdr_getbytes(xdrs,errortext,(off_t)1);
if(errortext[0] == CLBRACE) depth++;
else if(errortext[0] == CRBRACE) {
depth--;
if(depth == 0) {i++; break;}
}
}
errmsg = (char*)malloc((size_t)i+1);
if(errmsg == NULL) {errfound = 1; goto done;}
xxdr_setpos(xdrs,ckp);
xxdr_getbytes(xdrs,errmsg,(off_t)i);
errmsg[i] = '\0';
state->error.message = errmsg;
state->error.code = strdup("?");
state->error.httpcode = 404;
xxdr_setpos(xdrs,ckp);
errfound = 1;
done:
xxdr_setpos(xdrs,ckp);
return errfound;
}