Exemplo n.º 1
0
OCerror
ocfetchf(OCstate* state, const char* constraint, OCdxd kind, OCflags flags,
        OCnode** rootp)
{
    OCtree* tree = NULL;
    OCnode* root = NULL;
    OCerror stat = OC_NOERR;
    
    tree = (OCtree*)ocmalloc(sizeof(OCtree));
    MEMCHECK(tree,OC_ENOMEM);
    memset((void*)tree,0,sizeof(OCtree));
    tree->dxdclass = kind;
    tree->state = state;
    tree->constraint = constraintescape(constraint);
    if(tree->constraint == NULL)
	tree->constraint = nulldup(constraint);

    /* Set curl properties: pwd, flags, proxies, ssl */
    if((stat=ocset_user_password(state))!= OC_NOERR) goto fail;
    if((stat=ocset_curl_flags(state)) != OC_NOERR) goto fail;
    if((stat=ocset_proxy(state)) != OC_NOERR) goto fail;
    if((stat=ocset_ssl(state)) != OC_NOERR) goto fail;

    ocbytesclear(state->packet);

    switch (kind) {
    case OCDAS:
        stat = readDAS(state,tree);
	if(stat == OC_NOERR) {
            tree->text = ocbytesdup(state->packet);
	    if(tree->text == NULL) stat = OC_EDAS;
	}
	break;
    case OCDDS:
        stat = readDDS(state,tree);
	if(stat == OC_NOERR) {
            tree->text = ocbytesdup(state->packet);
	    if(tree->text == NULL) stat = OC_EDDS;
	}
	break;
    case OCDATADDS:
	if((flags & OCINMEMORY) == 0) {/* store in file */
	    /* Create the datadds file immediately
               so that DRNO can reference it*/
            /* Make the tmp file*/
            stat = createtempfile(state,tree);
            if(stat) {OCTHROWCHK(stat); goto unwind;}
            stat = readDATADDS(state,tree,flags);
	    if(stat == OC_NOERR) {
                /* Separate the DDS from data and return the dds;
                   will modify packet */
                stat = ocextractddsinfile(state,tree,flags);
	    }
	} else { /*inmemory*/
            stat = readDATADDS(state,tree,flags);
	    if(stat == OC_NOERR) {
                /* Separate the DDS from data and return the dds;
               will modify packet */
            stat = ocextractddsinmemory(state,tree,flags);
	}
	}
	break;
    }/*switch*/
    if(stat != OC_NOERR) {
	/* Obtain any http code */
	state->error.httpcode = ocfetchhttpcode(state->curl);
	if(state->error.httpcode >= 400) {
	    oc_log(LOGWARN,"oc_open: Could not read url; http error = %l",state->error.httpcode);
	} else {
	    oc_log(LOGWARN,"oc_open: Could not read url");
	}
	return OCTHROW(stat);
    }

    tree->nodes = NULL;
    stat = DAPparse(state,tree,tree->text);
    /* Check and report on an error return from the server */
    if(stat == OC_EDAPSVC  && state->error.code != NULL) {
	oc_log(LOGERR,"oc_open: server error retrieving url: code=%s message=\"%s\"",
		  state->error.code,	
		  (state->error.message?state->error.message:""));
    }
    if(stat) {OCTHROWCHK(stat); goto unwind;}
    root = tree->root;
    /* make sure */
    tree->root = root;
    root->tree = tree;

    /* Verify the parse */
    switch (kind) {
    case OCDAS:
        if(root->octype != OC_Attributeset)
	    {OCTHROWCHK(stat=OC_EDAS); goto unwind;}
	break;
    case OCDDS:
        if(root->octype != OC_Dataset)
	    {OCTHROWCHK(stat=OC_EDDS); goto unwind;}
	break;
    case OCDATADDS:
        if(root->octype != OC_Dataset)
	    {OCTHROWCHK(stat=OC_EDATADDS); goto unwind;}
	/* Modify the tree kind */
	tree->dxdclass = OCDATADDS;
	break;
    default: return OC_EINVAL;
    }

    if(kind != OCDAS) {
        /* Process ocnodes to assign offsets and sizes where possible */
        occomputeskipdata(state,root);
        /* Process ocnodes to mark those that are cacheable */
        ocmarkcacheable(state,root);
        /* Process ocnodes to handle various semantic issues*/
        occomputesemantics(tree->nodes);
    }

    /* Process ocnodes to compute name info*/
    occomputefullnames(tree->root);

     if(kind == OCDATADDS) {
	if((flags & OCINMEMORY) == 0) {
            tree->data.xdrs = xxdr_filecreate(tree->data.file,tree->data.bod);
	} else {
	    /* Switch to zero based memory */
            tree->data.xdrs
		= xxdr_memcreate(tree->data.memory,tree->data.datasize,tree->data.bod);
	}
        MEMCHECK(tree->data.xdrs,OC_ENOMEM);
    }

    /* Put root into the state->trees list */
    oclistpush(state->trees,(ocelem)root);

    if(rootp) *rootp = root;
    return stat;

unwind:
    ocfreetree(tree);
fail:
    return OCTHROW(stat);
}
Exemplo n.º 2
0
OCerror
ocfetch(OCstate* state, const char* constraint, OCdxd kind, OCflags flags,
        OCnode** rootp)
{
    OCtree* tree = NULL;
    OCnode* root = NULL;
    OCerror stat = OC_NOERR;

    tree = (OCtree*)ocmalloc(sizeof(OCtree));
    MEMCHECK(tree,OC_ENOMEM);
    memset((void*)tree,0,sizeof(OCtree));
    tree->dxdclass = kind;
    tree->state = state;
    tree->constraint = constraintescape(constraint);
    if(tree->constraint == NULL)
	tree->constraint = nulldup(constraint);

    /* Set per-fetch curl properties */
#if 0 /* temporarily make per-link */
    if((stat=ocset_flags_perfetch(state))!= OC_NOERR) goto fail;
#endif

    ocbytesclear(state->packet);

    switch (kind) {
    case OCDAS:
        stat = readDAS(state,tree);
	if(stat == OC_NOERR) {
            tree->text = ocbytesdup(state->packet);
	    if(tree->text == NULL) stat = OC_EDAS;
	}
	break;
    case OCDDS:
        stat = readDDS(state,tree);
	if(stat == OC_NOERR) {
            tree->text = ocbytesdup(state->packet);
	    if(tree->text == NULL) stat = OC_EDDS;
	}
	break;
    case OCDATADDS:
	if((flags & OCONDISK) != 0) {/* store in file */
	    /* Create the datadds file immediately
               so that DRNO can reference it*/
            /* Make the tmp file*/
            stat = createtempfile(state,tree);
            if(stat) {OCTHROWCHK(stat); goto fail;}
            stat = readDATADDS(state,tree,flags);
	    if(stat == OC_NOERR) {
                /* Separate the DDS from data and return the dds;
                   will modify packet */
                stat = ocextractddsinfile(state,tree,flags);
	    }
	} else { /*inmemory*/
            stat = readDATADDS(state,tree,flags);
	    if(stat == OC_NOERR) {
                /* Separate the DDS from data and return the dds;
               will modify packet */
            stat = ocextractddsinmemory(state,tree,flags);
	}
	}
	break;
    default:
	break;
    }/*switch*/
    /* Obtain any http code */
    state->error.httpcode = ocfetchhttpcode(state->curl);
    if(stat != OC_NOERR) {
	if(state->error.httpcode >= 400) {
	    oclog(OCLOGWARN,"oc_open: Could not read url; http error = %l",state->error.httpcode);
	} else {
	    oclog(OCLOGWARN,"oc_open: Could not read url");
	}
	goto fail;
    }

    tree->nodes = NULL;
    stat = DAPparse(state,tree,tree->text);
    /* Check and report on an error return from the server */
    if(stat == OC_EDAPSVC  && state->error.code != NULL) {
	oclog(OCLOGERR,"oc_open: server error retrieving url: code=%s message=\"%s\"",
		  state->error.code,
		  (state->error.message?state->error.message:""));
    }
    if(stat) {OCTHROWCHK(stat); goto fail;}
    root = tree->root;
    /* make sure */
    tree->root = root;
    root->tree = tree;

    /* Verify the parse */
    switch (kind) {
    case OCDAS:
        if(root->octype != OC_Attributeset)
	    {OCTHROWCHK(stat=OC_EDAS); goto fail;}
	break;
    case OCDDS:
        if(root->octype != OC_Dataset)
	    {OCTHROWCHK(stat=OC_EDDS); goto fail;}
	break;
    case OCDATADDS:
        if(root->octype != OC_Dataset)
	    {OCTHROWCHK(stat=OC_EDATADDS); goto fail;}
	/* Modify the tree kind */
	tree->dxdclass = OCDATADDS;
	break;
    default: return OC_EINVAL;
    }

    if(kind != OCDAS) {
        /* Process ocnodes to mark those that are cacheable */
        ocmarkcacheable(state,root);
        /* Process ocnodes to handle various semantic issues*/
        occomputesemantics(tree->nodes);
    }

    /* Process ocnodes to compute name info*/
    occomputefullnames(tree->root);

     if(kind == OCDATADDS) {
	if((flags & OCONDISK) != 0) {
            tree->data.xdrs = xxdr_filecreate(tree->data.file,tree->data.bod);
	} else {
#ifdef OCDEBUG
fprintf(stderr,"ocfetch.datadds.memory: datasize=%lu bod=%lu\n",
	(unsigned long)tree->data.datasize,(unsigned long)tree->data.bod);
#endif
	    /* Switch to zero based memory */
            tree->data.xdrs
		= xxdr_memcreate(tree->data.memory,tree->data.datasize,tree->data.bod);
	}
        MEMCHECK(tree->data.xdrs,OC_ENOMEM);
	/* Do a quick check to see if server returned an ERROR {}
           at the beginning of the data
         */
	if(dataError(tree->data.xdrs,state)) {
	    stat = OC_EDATADDS;
	    oclog(OCLOGERR,"oc_open: server error retrieving url: code=%s message=\"%s\"",
		  state->error.code,
		  (state->error.message?state->error.message:""));
	    goto fail;
	}

	/* Compile the data into a more accessible format */
	stat = occompile(state,tree->root);
	if(stat != OC_NOERR)
	    goto fail;
    }

    /* Put root into the state->trees list */
    oclistpush(state->trees,(void*)root);

    if(rootp) *rootp = root;
    return stat;

fail:
    if(root != NULL)
	ocroot_free(root);
    else if(tree != NULL)
	octree_free(tree);
    return OCTHROW(stat);
}