Exemplo n.º 1
0
int
errorMapStart(const errormap * map, request_t * client_req, HttpReply * reply, const char *aclname, ERRMAPCB * callback, void *callback_data)
{
    char squid_error[100];
    int len = 0;
    const char *errorUrl;
    ErrorMapState *state;
    const char *tmp;
    http_status status;
    request_t *req;
    HttpHeaderPos hdrpos;
    HttpHeaderEntry *hdr;

    if (!client_req || !reply)
	return 0;

    status = reply->sline.status;

    tmp = httpHeaderGetStr(&reply->header, HDR_X_SQUID_ERROR);
    squid_error[0] = '\0';
    if (tmp) {
	xstrncpy(squid_error, tmp, sizeof(squid_error));
	len = strcspn(squid_error, " ");
    }
    squid_error[len] = '\0';
    errorUrl = getErrorMap(map, status, squid_error, aclname);
    if (!errorUrl)
	return 0;
    req = urlParse(urlMethodGetKnownByCode(METHOD_GET), (char *) errorUrl);
    if (!req) {
	debug(0, 0) ("errorMapStart: Invalid error URL '%s'\n", errorUrl);
	return 0;
    }
    req->urlgroup = xstrdup("error");

    state = cbdataAlloc(ErrorMapState);
    state->req = requestLink(req);
    state->e = storeCreateEntry(errorUrl, req->flags, req->method);
    state->sc = storeClientRegister(state->e, state);
    state->callback = callback;
    state->callback_data = callback_data;
    cbdataLock(callback_data);

    hdrpos = HttpHeaderInitPos;
    while ((hdr = httpHeaderGetEntry(&client_req->header, &hdrpos)) != NULL) {
	if (CBIT_TEST(client_headers, hdr->id))
	    httpHeaderAddClone(&req->header, hdr);
    }
    hdrpos = HttpHeaderInitPos;
    while ((hdr = httpHeaderGetEntry(&reply->header, &hdrpos)) != NULL) {
	if (CBIT_TEST(server_headers, hdr->id))
	    httpHeaderAddClone(&req->header, hdr);
    }
    httpHeaderPutInt(&req->header, HDR_X_ERROR_STATUS, (int) reply->sline.status);
    httpHeaderPutStr(&req->header, HDR_X_REQUEST_URI, urlCanonical(client_req));

    fwdStart(-1, state->e, req);
    storeClientRef(state->sc, state->e, 0, 0, SM_PAGE_SIZE, errorMapFetchHeaders, state);
    return 1;
}
Exemplo n.º 2
0
/* use fresh entries to replace old ones */
void
httpHeaderUpdate(HttpHeader * old, const HttpHeader * fresh, const HttpHeaderMask * denied_mask)
{
    const HttpHeaderEntry *e;
    HttpHeaderPos pos = HttpHeaderInitPos;

    assert(old && fresh);
    assert(old != fresh);
    debug(55, 7) ("updating hdr: %p <- %p\n", old, fresh);

    while ((e = httpHeaderGetEntry(fresh, &pos))) {
	/* deny bad guys (ok to check for HDR_OTHER) here */
	if (denied_mask && CBIT_TEST(*denied_mask, e->id))
	    continue;
	if (e->id != HDR_OTHER)
	    httpHeaderDelById(old, e->id);
	else
	    httpHeaderDelByName(old, strBuf(e->name));
    }
    pos = HttpHeaderInitPos;
    while ((e = httpHeaderGetEntry(fresh, &pos))) {
	/* deny bad guys (ok to check for HDR_OTHER) here */
	if (denied_mask && CBIT_TEST(*denied_mask, e->id))
	    continue;
	httpHeaderAddClone(old, e);
    }

    /* And now, repack the array to "fill in the holes" */
    httpHeaderRepack(old);
}
Exemplo n.º 3
0
/* return a list of entries with the same id separated by ',' and ws */
String
httpHeaderGetList(const HttpHeader * hdr, http_hdr_type id)
{
    String s = StringNull;
    HttpHeaderEntry *e;
    HttpHeaderPos pos = HttpHeaderInitPos;
    debug(55, 6) ("%p: joining for id %d\n", hdr, id);
    /* only fields from ListHeaders array can be "listed" */
    assert(CBIT_TEST(ListHeadersMask, id));
    if (!CBIT_TEST(hdr->mask, id))
	return s;
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (e->id == id)
	    strListAdd(&s, strBuf(e->value), ',');
    }
    /*
     * note: we might get an empty (len==0) string if there was an "empty"
     * header; we must not get a NULL string though.
     */
    assert(strBuf(s));
    /* temporary warning: remove it! @?@ @?@ @?@ */
    if (!strLen(s))
	debug(55, 3) ("empty list header: %s (%d)\n", strBuf(Headers[id].name), id);
    debug(55, 6) ("%p: joined for id %d: %s\n", hdr, id, strBuf(s));
    return s;
}
Exemplo n.º 4
0
static const char* httpHeaderGetValue(HttpHeader *h, const char *name)
{
	HttpHeaderPos pos = HttpHeaderInitPos;
	HttpHeaderEntry *curHE; 
	while ((curHE = httpHeaderGetEntry(h, &pos))) {
		if(!strcasecmp(strBuf(curHE->name), name)) {
			return strBuf(curHE->value);
		}   
	}   
	return NULL;
}
Exemplo n.º 5
0
/* packs all the entries using supplied packer */
void
httpHeaderPackInto(const HttpHeader * hdr, Packer * p)
{
    HttpHeaderPos pos = HttpHeaderInitPos;
    const HttpHeaderEntry *e;
    assert(hdr && p);
    debug(55, 7) ("packing hdr: (%p)\n", hdr);
    /* pack all entries one by one */
    while ((e = httpHeaderGetEntry(hdr, &pos)))
	httpHeaderEntryPackInto(e, p);
}
Exemplo n.º 6
0
/*
 * Refreshes the header mask. Useful after httpHeaderDelAt constructs
 */
void
httpHeaderRefreshMask(HttpHeader * hdr)
{
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    httpHeaderMaskInit(&hdr->mask, 0);
    debug(55, 7) ("refreshing the mask in hdr %p\n", hdr);
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	CBIT_SET(hdr->mask, e->id);
    }
}
Exemplo n.º 7
0
/* append entries (also see httpHeaderUpdate) */
void
httpHeaderAppend(HttpHeader * dest, const HttpHeader * src)
{
    const HttpHeaderEntry *e;
    HttpHeaderPos pos = HttpHeaderInitPos;
    assert(src && dest);
    assert(src != dest);
    debug(55, 7) ("appending hdr: %p += %p\n", dest, src);

    while ((e = httpHeaderGetEntry(src, &pos))) {
	httpHeaderAddEntry(dest, httpHeaderEntryClone(e));
    }
}
Exemplo n.º 8
0
/* Mangles headers for a list of headers. */
void
httpHdrMangleList(HttpHeader * l, request_t * request)
{
    HttpHeaderEntry *e;
    HttpHeaderPos p = HttpHeaderInitPos;
    int removed_headers = 0;
    while ((e = httpHeaderGetEntry(l, &p))) {
	if (0 == httpHdrMangle(e, request)) {
	    httpHeaderDelAt(l, p);
	    removed_headers++;
	}
    }
    if (removed_headers)
	httpHeaderRefreshMask(l);
}
Exemplo n.º 9
0
/*
 *This line is to modify the header
 */
static int mod_modify_s2o_header(HttpStateData* data, HttpHeader* hdr)
{
	assert(data);
	int fd = data->fd;
	int i, len;

	struct mod_conf_param *param = (struct mod_conf_param *)cc_get_mod_param(fd, mod);
	assert(param);

	debug(107, 3)("param->orig_name=%s, param->new_name=%s\n", strBuf(param->orig_name), strBuf(param->new_name));
	HttpHeaderPos pos = HttpHeaderInitPos;
	HttpHeaderEntry *myheader;
	HttpHeaderEntry e;

	while ((myheader = httpHeaderGetEntry(hdr, &pos)))
	{
		debug(107, 3)("myheader=%s, param->new_name=%s\n", strBuf(myheader->name), strBuf(param->new_name));
		if (strCaseCmp(myheader->name, strBuf(param->orig_name)) == 0)
		{
			debug(107, 3)("%s is myheader->value,%s is param->orig_name\n",strBuf(myheader->value), strBuf(param->orig_name));

			if(strLen(myheader->value) >= 4095)
			{
				debug(107, 3)("A too long header value!!\n");
				return -1;
			}

			stringInit(&e.name, strBuf(param->new_name));
			stringInit(&e.value, myheader->value.buf);
			len=strlen(strBuf(e.name));
			i=httpHeaderIdByNameDef(strBuf(e.name), len);
			if(-1 == i)
				e.id = HDR_OTHER;
			else    
				e.id = i;
			httpHeaderDelByName(hdr, strBuf(param->orig_name));
			httpHeaderAddEntry(hdr, httpHeaderEntryClone(&e));
			//httpHeaderDelAt(&request->header, pos);
			//httpHeaderRefreshMask(&request->header);
			//httpHeaderInsertEntry(&request->header, httpHeaderEntryClone(&e), pos);
			stringClean(&e.name);
			stringClean(&e.value);			
			break;
		}
	}
	return 0;

}
Exemplo n.º 10
0
/*
 * deletes all fields with a given name if any, returns #fields deleted; 
 */
int
httpHeaderDelByName(HttpHeader * hdr, const char *name)
{
    int count = 0;
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    httpHeaderMaskInit(&hdr->mask, 0);	/* temporal inconsistency */
    debug(55, 7) ("deleting '%s' fields in hdr %p\n", name, hdr);
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (!strCaseCmp(e->name, name)) {
	    httpHeaderDelAt(hdr, pos);
	    count++;
	} else
	    CBIT_SET(hdr->mask, e->id);
    }
    return count;
}
Exemplo n.º 11
0
/* use fresh entries to replace old ones */
void
httpHeaderUpdate(HttpHeader * old, const HttpHeader * fresh, const HttpHeaderMask * denied_mask)
{
    const HttpHeaderEntry *e;
    HttpHeaderPos pos = HttpHeaderInitPos;
    assert(old && fresh);
    assert(old != fresh);
    debug(55, 7) ("updating hdr: %p <- %p\n", old, fresh);

    while ((e = httpHeaderGetEntry(fresh, &pos))) {
	/* deny bad guys (ok to check for HDR_OTHER) here */
	if (denied_mask && CBIT_TEST(*denied_mask, e->id))
	    continue;
	httpHeaderDelByName(old, strBuf(e->name));
	httpHeaderAddEntry(old, httpHeaderEntryClone(e));
    }
}
Exemplo n.º 12
0
/*
 * same as httpHeaderFindEntry
 */
static HttpHeaderEntry *
httpHeaderFindLastEntry(const HttpHeader * hdr, http_hdr_type id)
{
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    HttpHeaderEntry *result = NULL;
    assert(hdr);
    assert_eid(id);
    assert(!CBIT_TEST(ListHeadersMask, id));

    /* check mask first */
    if (!CBIT_TEST(hdr->mask, id))
	return NULL;
    /* looks like we must have it, do linear search */
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (e->id == id)
	    result = e;
    }
    assert(result);		/* must be there! */
    return result;
}
Exemplo n.º 13
0
/*
 * returns a pointer to a specified entry if any 
 * note that we return one entry so it does not make much sense to ask for
 * "list" headers
 */
HttpHeaderEntry *
httpHeaderFindEntry(const HttpHeader * hdr, http_hdr_type id)
{
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    assert(hdr);
    assert_eid(id);
    assert(!CBIT_TEST(ListHeadersMask, id));

    /* check mask first */
    if (!CBIT_TEST(hdr->mask, id))
	return NULL;
    /* looks like we must have it, do linear search */
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (e->id == id)
	    return e;
    }
    /* hm.. we thought it was there, but it was not found */
    assert(0);
    return NULL;		/* not reached */
}
Exemplo n.º 14
0
/* deletes all entries with a given id, returns the #entries deleted */
int
httpHeaderDelById(HttpHeader * hdr, http_hdr_type id)
{
    int count = 0;
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    debug(55, 8) ("%p del-by-id %d\n", hdr, id);
    assert(hdr);
    assert_eid(id);
    assert(id != HDR_OTHER);	/* does not make sense */
    if (!CBIT_TEST(hdr->mask, id))
	return 0;
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (e->id == id) {
	    httpHeaderDelAt(hdr, pos);
	    count++;
	}
    }
    CBIT_CLR(hdr->mask, id);
    assert(count);
    return count;
}
Exemplo n.º 15
0
void
httpHeaderClean(HttpHeader * hdr)
{
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;

    assert(hdr);
    assert(hdr->owner > hoNone && hdr->owner <= hoReply);
    debug(55, 7) ("cleaning hdr: %p owner: %d\n", hdr, hdr->owner);

    /*
     * An unfortunate bug.  The hdr->entries array is initialized
     * such that count is set to zero.  httpHeaderClean() seems to
     * be called both when 'hdr' is created, and destroyed.  Thus,
     * we accumulate a large number of zero counts for 'hdr' before
     * it is ever used.  Can't think of a good way to fix it, except
     * adding a state variable that indicates whether or not 'hdr'
     * has been used.  As a hack, just never count zero-sized header
     * arrays.
     */
    if (0 != hdr->entries.count)
	statHistCount(&HttpHeaderStats[hdr->owner].hdrUCountDistr, hdr->entries.count);
    HttpHeaderStats[hdr->owner].destroyedCount++;
    HttpHeaderStats[hdr->owner].busyDestroyedCount += hdr->entries.count > 0;
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	/* tmp hack to try to avoid coredumps */
	if (e->id >= HDR_ENUM_END) {
	    debug(55, 0) ("httpHeaderClean BUG: entry[%d] is invalid (%d). Ignored.\n",
		(int) pos, e->id);
	} else {
	    statHistCount(&HttpHeaderStats[hdr->owner].fieldTypeDistr, e->id);
	    /* yes, this destroy() leaves us in an inconsistent state */
	    httpHeaderEntryDestroy(e);
	}
    }
    arrayClean(&hdr->entries);
}
Exemplo n.º 16
0
/*
 * Returns the value of the specified header.
 */
String
httpHeaderGetByName(const HttpHeader * hdr, const char *name)
{
    http_hdr_type id;
    HttpHeaderPos pos = HttpHeaderInitPos;
    HttpHeaderEntry *e;
    String result = StringNull;

    assert(hdr);
    assert(name);

    /* First try the quick path */
    id = httpHeaderIdByNameDef(name, strlen(name));
    if (id != -1)
	return httpHeaderGetStrOrList(hdr, id);

    /* Sorry, an unknown header name. Do linear search */
    while ((e = httpHeaderGetEntry(hdr, &pos))) {
	if (e->id == HDR_OTHER && strCaseCmp(e->name, name) == 0) {
	    strListAdd(&result, strBuf(e->value), ',');
	}
    }
    return result;
}