/*
* Free the SockHandler structure
*/
void a_Dpip_dsh_free(Dsh *dsh)
{
dReturn_if (dsh == NULL);
dStr_free(dsh->wrbuf, 1);
dStr_free(dsh->rdbuf, 1);
dFree(dsh);
}
/*
* If the url belongs to a dpi server, return its name.
*/
static int Capi_url_uses_dpi(DilloUrl *url, char **server_ptr)
{
char *p, *server = NULL, *url_str = URL_STR(url);
Dstr *tmp;
if ((dStrncasecmp(url_str, "http:", 5) == 0) ||
(dStrncasecmp(url_str, "about:", 6) == 0)) {
/* URL doesn't use dpi (server = NULL) */
} else if (dStrncasecmp(url_str, "dpi:/", 5) == 0) {
/* dpi prefix, get this server's name */
if ((p = strchr(url_str + 5, '/')) != NULL) {
server = dStrndup(url_str + 5, (uint_t)(p - url_str - 5));
} else {
server = dStrdup("?");
}
if (strcmp(server, "bm") == 0) {
dFree(server);
server = dStrdup("bookmarks");
}
} else if ((p = strchr(url_str, ':')) != NULL) {
tmp = dStr_new("proto.");
dStr_append_l(tmp, url_str, p - url_str);
server = tmp->str;
dStr_free(tmp, 0);
}
return ((*server_ptr = server) ? 1 : 0);
}
/*
* Read all the available data from a filedescriptor.
* This is intended for short answers, i.e. when we know the server
* will write it all before being preempted. For answers that may come
* as an stream with delays, non-blocking is better.
* Return value: read data, or NULL on error and no data.
*/
static char *Dpi_blocking_read(int fd)
{
int st;
const int buf_sz = 8*1024;
char buf[buf_sz], *msg = NULL;
Dstr *dstr = dStr_sized_new(buf_sz);
do {
st = read(fd, buf, buf_sz);
if (st < 0) {
if (errno == EINTR) {
continue;
} else {
MSG_ERR("[Dpi_blocking_read] %s\n", dStrerror(errno));
break;
}
} else if (st > 0) {
dStr_append_l(dstr, buf, st);
}
} while (st == buf_sz);
msg = (dstr->len > 0) ? dstr->str : NULL;
dStr_free(dstr, (dstr->len > 0) ? FALSE : TRUE);
return msg;
}
/*
* Build the dpip command tag, according to URL and server.
*/
static char *Capi_dpi_build_cmd(DilloWeb *web, char *server)
{
char *cmd;
if (strcmp(server, "proto.https") == 0) {
/* Let's be kind and make the HTTP query string for the dpi */
char *proxy_connect = a_Http_make_connect_str(web->url);
Dstr *http_query = a_Http_make_query_str(web->url, FALSE);
/* BUG: embedded NULLs in query data will truncate message */
if (proxy_connect) {
const char *proxy_urlstr = a_Http_get_proxy_urlstr();
cmd = a_Dpip_build_cmd("cmd=%s proxy_url=%s proxy_connect=%s "
"url=%s query=%s", "open_url", proxy_urlstr,
proxy_connect, URL_STR(web->url),
http_query->str);
} else {
cmd = a_Dpip_build_cmd("cmd=%s url=%s query=%s",
"open_url", URL_STR(web->url),http_query->str);
}
dFree(proxy_connect);
dStr_free(http_query, 1);
} else if (strcmp(server, "downloads") == 0) {
/* let the downloads server get it */
cmd = a_Dpip_build_cmd("cmd=%s url=%s destination=%s",
"download", URL_STR(web->url), web->filename);
} else {
/* For everyone else, the url string is enough... */
cmd = a_Dpip_build_cmd("cmd=%s url=%s", "open_url", URL_STR(web->url));
}
return cmd;
}
static void Decode_charset_free(Decode *dc)
{
/* iconv_close() frees dc->state */
(void)iconv_close((iconv_t)(dc->state));
dFree(dc->buffer);
dStr_free(dc->leftover, 1);
}
/*
* Free the components of a CacheEntry_t struct.
*/
static void Cache_entry_free(CacheEntry_t *entry)
{
a_Url_free((DilloUrl *)entry->Url);
dFree(entry->TypeDet);
dFree(entry->TypeHdr);
dFree(entry->TypeMeta);
dFree(entry->TypeNorm);
dStr_free(entry->Header, TRUE);
a_Url_free((DilloUrl *)entry->Location);
Cache_auth_free(entry->Auth);
dStr_free(entry->Data, 1);
dStr_free(entry->UTF8Data, 1);
if (entry->CharsetDecoder)
a_Decode_free(entry->CharsetDecoder);
if (entry->TransferDecoder)
a_Decode_free(entry->TransferDecoder);
if (entry->ContentDecoder)
a_Decode_free(entry->ContentDecoder);
dFree(entry);
}
/*
* Reference the cache data.
*/
static void Cache_ref_data(CacheEntry_t *entry)
{
if (entry) {
entry->DataRefcount++;
_MSG("DataRefcount++: %d\n", entry->DataRefcount);
if (entry->CharsetDecoder &&
(!entry->UTF8Data || entry->DataRefcount == 1)) {
dStr_free(entry->UTF8Data, 1);
entry->UTF8Data = a_Decode_process(entry->CharsetDecoder,
entry->Data->str,
entry->Data->len);
}
}
}
/*
* Change Content-Type for cache entry found by url.
* from = { "http" | "meta" }
* Return new content type.
*/
const char *a_Cache_set_content_type(const DilloUrl *url, const char *ctype,
const char *from)
{
const char *curr;
char *major, *minor, *charset;
CacheEntry_t *entry = Cache_entry_search(url);
dReturn_val_if_fail (entry != NULL, NULL);
_MSG("a_Cache_set_content_type {%s} {%s}\n", ctype, URL_STR(url));
curr = Cache_current_content_type(entry);
if (entry->TypeMeta || (*from == 'h' && entry->TypeHdr) ) {
/* Type is already been set. Do nothing.
* BTW, META overrides TypeHdr */
} else {
if (*from == 'h') {
/* Content-Type from HTTP header */
entry->TypeHdr = dStrdup(ctype);
} else {
/* Content-Type from META */
entry->TypeMeta = dStrdup(ctype);
}
if (a_Misc_content_type_cmp(curr, ctype)) {
/* ctype gives one different from current */
a_Misc_parse_content_type(ctype, &major, &minor, &charset);
if (*from == 'm' && charset &&
((!major || !*major) && (!minor || !*minor))) {
/* META only gives charset; use detected MIME type too */
entry->TypeNorm = dStrconcat(entry->TypeDet, ctype, NULL);
} else if (*from == 'm' &&
!dStrnAsciiCasecmp(ctype, "text/xhtml", 10)) {
/* WORKAROUND: doxygen uses "text/xhtml" in META */
entry->TypeNorm = dStrdup(entry->TypeDet);
}
if (charset) {
if (entry->CharsetDecoder)
a_Decode_free(entry->CharsetDecoder);
entry->CharsetDecoder = a_Decode_charset_init(charset);
curr = Cache_current_content_type(entry);
/* Invalidate UTF8Data */
dStr_free(entry->UTF8Data, 1);
entry->UTF8Data = NULL;
}
dFree(major); dFree(minor); dFree(charset);
}
}
return curr;
}
/*
* Initialize dicache data
*/
void a_Cache_init(void)
{
ClientQueue = dList_new(32);
DelayedQueue = dList_new(32);
CachedURLs = dList_new(256);
/* inject the splash screen in the cache */
{
DilloUrl *url = a_Url_new("about:splash", NULL);
Dstr *ds = dStr_new(AboutSplash);
Cache_entry_inject(url, ds);
dStr_free(ds, 1);
a_Url_free(url);
}
}
/*
* Unreference the cache data.
*/
static void Cache_unref_data(CacheEntry_t *entry)
{
if (entry) {
entry->DataRefcount--;
_MSG("DataRefcount--: %d\n", entry->DataRefcount);
if (entry->CharsetDecoder) {
if (entry->DataRefcount == 0) {
dStr_free(entry->UTF8Data, 1);
entry->UTF8Data = NULL;
} else if (entry->DataRefcount < 0) {
MSG_ERR("Cache_unref_data: negative refcount\n");
entry->DataRefcount = 0;
}
}
}
}
/*
* Printf like function for building dpip commands.
* It takes care of dpip escaping of its arguments.
* NOTE : It ONLY accepts string parameters, and
* only one %s per parameter.
*/
char *a_Dpip_build_cmd(const char *format, ...)
{
va_list argp;
char *p, *q, *s;
Dstr *cmd;
/* Don't allow Quote characters in attribute names */
if (strchr(format, Quote))
return NULL;
cmd = dStr_sized_new(64);
dStr_append_c(cmd, '<');
va_start(argp, format);
for (p = q = (char*)format; *q; ) {
p = strstr(q, "%s");
if (!p) {
dStr_append(cmd, q);
break;
} else {
/* Copy format's part */
while (q != p)
dStr_append_c(cmd, *q++);
q += 2;
dStr_append_c(cmd, Quote);
/* Stuff-copy of argument */
s = va_arg (argp, char *);
for ( ; *s; ++s) {
dStr_append_c(cmd, *s);
if (*s == Quote)
dStr_append_c(cmd, *s);
}
dStr_append_c(cmd, Quote);
}
}
va_end(argp);
dStr_append_c(cmd, ' ');
dStr_append_c(cmd, Quote);
dStr_append_c(cmd, '>');
p = cmd->str;
dStr_free(cmd, FALSE);
return p;
}
/*
* Create and submit the HTTP query to the IO engine
*/
static void Http_send_query(ChainLink *Info, SocketData_t *S)
{
Dstr *query;
DataBuf *dbuf;
/* Create the query */
query = a_Http_make_query_str(S->web->url, S->web->requester,
S->flags & HTTP_SOCKET_USE_PROXY);
dbuf = a_Chain_dbuf_new(query->str, query->len, 0);
/* actually this message is sent too early.
* It should go when the socket is ready for writing (i.e. connected) */
_MSG_BW(S->web, 1, "Sending query to %s...", URL_HOST_(S->web->url));
/* send query */
a_Chain_bcb(OpSend, Info, dbuf, NULL);
dFree(dbuf);
dStr_free(query, 1);
}
/*
* Return a new string for the request used to tunnel HTTPS through a proxy.
* As of 2009, the best reference appears to be section 5 of RFC 2817.
*/
char *a_Http_make_connect_str(const DilloUrl *url)
{
Dstr *dstr;
const char *auth1;
int auth_len;
char *auth2, *proxy_auth, *retstr;
dReturn_val_if_fail(Http_must_use_proxy(url), NULL);
dstr = dStr_new("");
auth1 = URL_AUTHORITY(url);
auth_len = strlen(auth1);
if (auth_len > 0 && !isdigit(auth1[auth_len - 1]))
/* if no port number, add HTTPS port */
auth2 = dStrconcat(auth1, ":443", NULL);
else
auth2 = dStrdup(auth1);
proxy_auth = HTTP_Proxy_Auth_base64 ?
dStrconcat ("Proxy-Authorization: Basic ",
HTTP_Proxy_Auth_base64, "\r\n", NULL) :
dStrdup("");
dStr_sprintfa(
dstr,
"CONNECT %s HTTP/1.1\r\n"
"Host: %s\r\n"
"%s"
"\r\n",
auth2,
auth2,
proxy_auth);
dFree(auth2);
dFree(proxy_auth);
retstr = dstr->str;
dStr_free(dstr, 0);
return retstr;
}
/*
* Make the http query string
*/
Dstr *a_Http_make_query_str(const DilloUrl *url, const DilloUrl *requester,
bool_t use_proxy)
{
char *ptr, *cookies, *referer, *auth;
Dstr *query = dStr_new(""),
*request_uri = dStr_new(""),
*proxy_auth = dStr_new("");
if (use_proxy) {
dStr_sprintfa(request_uri, "%s%s",
URL_STR(url),
(URL_PATH_(url) || URL_QUERY_(url)) ? "" : "/");
if ((ptr = strrchr(request_uri->str, '#')))
dStr_truncate(request_uri, ptr - request_uri->str);
if (HTTP_Proxy_Auth_base64)
dStr_sprintf(proxy_auth, "Proxy-Authorization: Basic %s\r\n",
HTTP_Proxy_Auth_base64);
} else {
dStr_sprintfa(request_uri, "%s%s%s%s",
URL_PATH(url),
URL_QUERY_(url) ? "?" : "",
URL_QUERY(url),
(URL_PATH_(url) || URL_QUERY_(url)) ? "" : "/");
}
cookies = a_Cookies_get_query(url, requester);
auth = a_Auth_get_auth_str(url, request_uri->str);
referer = Http_get_referer(url);
if (URL_FLAGS(url) & URL_Post) {
Dstr *content_type = Http_make_content_type(url);
dStr_sprintfa(
query,
"POST %s HTTP/1.1\r\n"
"Connection: close\r\n"
"Accept: text/*,image/*,*/*;q=0.2\r\n"
"Accept-Charset: utf-8,*;q=0.8\r\n"
"Accept-Encoding: gzip\r\n"
"%s" /* language */
"%s" /* auth */
"Host: %s\r\n"
"%s"
"%s"
"User-Agent: %s\r\n"
"Content-Length: %ld\r\n"
"Content-Type: %s\r\n"
"%s" /* cookies */
"\r\n",
request_uri->str, HTTP_Language_hdr, auth ? auth : "",
URL_AUTHORITY(url), proxy_auth->str, referer, prefs.http_user_agent,
(long)URL_DATA(url)->len, content_type->str,
cookies);
dStr_append_l(query, URL_DATA(url)->str, URL_DATA(url)->len);
dStr_free(content_type, TRUE);
} else {
dStr_sprintfa(
query,
"GET %s HTTP/1.1\r\n"
"%s"
"Connection: close\r\n"
"Accept: text/*,image/*,*/*;q=0.2\r\n"
"Accept-Charset: utf-8,*;q=0.8\r\n"
"Accept-Encoding: gzip\r\n"
"%s" /* language */
"%s" /* auth */
"Host: %s\r\n"
"%s"
"%s"
"User-Agent: %s\r\n"
"%s" /* cookies */
"\r\n",
request_uri->str,
(URL_FLAGS(url) & URL_E2EQuery) ?
"Cache-Control: no-cache\r\nPragma: no-cache\r\n" : "",
HTTP_Language_hdr, auth ? auth : "", URL_AUTHORITY(url),
proxy_auth->str, referer, prefs.http_user_agent, cookies);
}
dFree(referer);
dFree(cookies);
dFree(auth);
dStr_free(request_uri, TRUE);
dStr_free(proxy_auth, TRUE);
_MSG("Query: {%s}\n", dStr_printable(query, 8192));
return query;
}
/*
* Receive new data, update the reception buffer (for next read), update the
* cache, and service the client queue.
*
* This function gets called whenever the IO has new data.
* 'Op' is the operation to perform
* 'VPtr' is a (void) pointer to the IO control structure
*/
void a_Cache_process_dbuf(int Op, const char *buf, size_t buf_size,
const DilloUrl *Url)
{
int offset, len;
const char *str;
Dstr *dstr1, *dstr2, *dstr3;
CacheEntry_t *entry = Cache_entry_search(Url);
/* Assert a valid entry (not aborted) */
dReturn_if_fail (entry != NULL);
_MSG("__a_Cache_process_dbuf__\n");
if (Op == IORead) {
/*
* Cache_get_header() will set CA_GotHeader if it has a full header, and
* Cache_parse_header() will unset it if the header ends being
* merely an informational response from the server (i.e., 100 Continue)
*/
for (offset = 0; !(entry->Flags & CA_GotHeader) &&
(len = Cache_get_header(entry, buf + offset, buf_size - offset));
Cache_parse_header(entry) ) {
offset += len;
}
if (entry->Flags & CA_GotHeader) {
str = buf + offset;
len = buf_size - offset;
entry->TransferSize += len;
dstr1 = dstr2 = dstr3 = NULL;
/* Decode arrived data (<= 3 stages) */
if (entry->TransferDecoder) {
dstr1 = a_Decode_process(entry->TransferDecoder, str, len);
str = dstr1->str;
len = dstr1->len;
}
if (entry->ContentDecoder) {
dstr2 = a_Decode_process(entry->ContentDecoder, str, len);
str = dstr2->str;
len = dstr2->len;
}
dStr_append_l(entry->Data, str, len);
if (entry->CharsetDecoder && entry->UTF8Data) {
dstr3 = a_Decode_process(entry->CharsetDecoder, str, len);
dStr_append_l(entry->UTF8Data, dstr3->str, dstr3->len);
}
dStr_free(dstr1, 1);
dStr_free(dstr2, 1);
dStr_free(dstr3, 1);
if (entry->Data->len)
entry->Flags &= ~CA_IsEmpty;
entry = Cache_process_queue(entry);
}
} else if (Op == IOClose) {
if ((entry->ExpectedSize || entry->TransferSize) &&
entry->TypeHdr == NULL) {
MSG_HTTP("Message with a body lacked Content-Type header.\n");
}
if ((entry->Flags & CA_GotLength) &&
(entry->ExpectedSize != entry->TransferSize)) {
MSG_HTTP("Content-Length does NOT match message body,\n"
" at: %s\n", URL_STR_(entry->Url));
MSG("entry->ExpectedSize = %d, entry->TransferSize = %d\n",
entry->ExpectedSize, entry->TransferSize);
}
if (!entry->TransferSize && !(entry->Flags & CA_Redirect) &&
(entry->Flags & WEB_RootUrl)) {
char *eol = strchr(entry->Header->str, '\n');
if (eol) {
char *status_line = dStrndup(entry->Header->str,
eol - entry->Header->str);
MSG_HTTP("Body was empty. Server sent status: %s\n", status_line);
dFree(status_line);
}
}
entry->Flags |= CA_GotData;
entry->Flags &= ~CA_Stopped; /* it may catch up! */
if (entry->TransferDecoder) {
a_Decode_free(entry->TransferDecoder);
entry->TransferDecoder = NULL;
}
if (entry->ContentDecoder) {
a_Decode_free(entry->ContentDecoder);
entry->ContentDecoder = NULL;
}
dStr_fit(entry->Data); /* fit buffer size! */
if ((entry = Cache_process_queue(entry))) {
if (entry->Flags & CA_GotHeader) {
Cache_unref_data(entry);
}
}
} else if (Op == IOAbort) {
/* unused */
MSG("a_Cache_process_dbuf Op = IOAbort; not implemented!\n");
}
}
/*
* Parse authentication challenge into token-value pairs
* and feed them into the callback function.
*
* The parsing is aborted should the callback function return 0.
*
* Return: 1 if the parse succeeds, 0 otherwise.
*/
static int Auth_parse_token_value(AuthParse_t *auth_parse, char **auth,
Auth_parse_token_value_callback_t *callback)
{
char keep_going, expect_quoted;
char *token, *beyond_token;
Dstr *value;
size_t *token_size;
while (**auth) {
_MSG("Auth_parse_token_value: remaining: %s\n", *auth);
/* parse a token */
token = *auth;
token_size = 0;
while (Auth_is_token_char(**auth)) {
(*auth)++;
token_size++;
}
if (token_size == 0) {
MSG("Auth_parse_token_value: missing auth token\n");
return 0;
}
beyond_token = *auth;
/* skip linear whitespace characters */
while (**auth == ' ' || **auth == '\t')
(*auth)++;
/* parse the '=' */
switch (*(*auth)++) {
case '=':
*beyond_token = '\0';
break;
case '\0':
case ',':
MSG("Auth_parse_token_value: missing auth token value\n");
return 0;
break;
default:
MSG("Auth_parse_token_value: garbage after auth token\n");
return 0;
break;
}
value = Auth_unquote_value(auth);
expect_quoted = !(strcmp(token, "stale") == 0 ||
strcmp(token, "algorithm") == 0);
if (((*auth)[-1] == '"') != expect_quoted)
MSG_WARN("Auth_parse_token_value: "
"Values for key %s should%s be quoted.\n",
token, expect_quoted ? "" : " not");
keep_going = callback(auth_parse, token, value->str);
dStr_free(value, 1);
if (!keep_going)
break;
/* skip ' ' and ',' */
while ((**auth == ' ') || (**auth == ','))
(*auth)++;
}
return 1;
}
/*
* Scan, allocate, and set things according to header info.
* (This function needs the whole header to work)
*/
static void Cache_parse_header(CacheEntry_t *entry)
{
char *header = entry->Header->str;
char *Length, *Type, *location_str, *encoding;
#ifndef DISABLE_COOKIES
Dlist *Cookies;
#endif
Dlist *warnings;
void *data;
int i;
_MSG("Cache_parse_header\n");
if (entry->Header->len > 12) {
if (header[9] == '1' && header[10] == '0' && header[11] == '0') {
/* 100: Continue. The "real" header has not come yet. */
MSG("An actual 100 Continue header!\n");
entry->Flags &= ~CA_GotHeader;
dStr_free(entry->Header, 1);
entry->Header = dStr_new("");
return;
}
if (header[9] == '3' && header[10] == '0' &&
(location_str = Cache_parse_field(header, "Location"))) {
/* 30x: URL redirection */
DilloUrl *location_url = a_Url_new(location_str,URL_STR_(entry->Url));
if (prefs.filter_auto_requests == PREFS_FILTER_SAME_DOMAIN &&
!a_Url_same_organization(entry->Url, location_url)) {
/* don't redirect; just show body like usual (if any) */
MSG("Redirection not followed from %s to %s\n",
URL_HOST(entry->Url), URL_STR(location_url));
a_Url_free(location_url);
} else {
entry->Flags |= CA_Redirect;
if (header[11] == '1')
entry->Flags |= CA_ForceRedirect; /* 301 Moved Permanently */
else if (header[11] == '2')
entry->Flags |= CA_TempRedirect; /* 302 Temporary Redirect */
if (URL_FLAGS(location_url) & (URL_Post + URL_Get) &&
dStrAsciiCasecmp(URL_SCHEME(location_url), "dpi") == 0 &&
dStrAsciiCasecmp(URL_SCHEME(entry->Url), "dpi") != 0) {
/* Forbid dpi GET and POST from non dpi-generated urls */
MSG("Redirection Denied! '%s' -> '%s'\n",
URL_STR(entry->Url), URL_STR(location_url));
a_Url_free(location_url);
} else {
entry->Location = location_url;
}
}
dFree(location_str);
} else if (strncmp(header + 9, "401", 3) == 0) {
entry->Auth =
Cache_parse_multiple_fields(header, "WWW-Authenticate");
} else if (strncmp(header + 9, "404", 3) == 0) {
entry->Flags |= CA_NotFound;
}
}
if ((warnings = Cache_parse_multiple_fields(header, "Warning"))) {
for (i = 0; (data = dList_nth_data(warnings, i)); ++i) {
MSG_HTTP("%s\n", (char *)data);
dFree(data);
}
dList_free(warnings);
}
/*
* Get Transfer-Encoding and initialize decoder
*/
encoding = Cache_parse_field(header, "Transfer-Encoding");
entry->TransferDecoder = a_Decode_transfer_init(encoding);
if ((Length = Cache_parse_field(header, "Content-Length")) != NULL) {
if (encoding) {
/*
* If Transfer-Encoding is present, Content-Length must be ignored.
* If the Transfer-Encoding is non-identity, it is an error.
*/
if (dStrAsciiCasecmp(encoding, "identity"))
MSG_HTTP("Content-Length and non-identity Transfer-Encoding "
"headers both present.\n");
} else {
entry->Flags |= CA_GotLength;
entry->ExpectedSize = MAX(strtol(Length, NULL, 10), 0);
}
dFree(Length);
}
dFree(encoding); /* free Transfer-Encoding */
#ifndef DISABLE_COOKIES
if ((Cookies = Cache_parse_multiple_fields(header, "Set-Cookie"))) {
CacheClient_t *client;
for (i = 0; (client = dList_nth_data(ClientQueue, i)); ++i) {
if (client->Url == entry->Url) {
DilloWeb *web = client->Web;
if (!web->requester ||
a_Url_same_organization(entry->Url, web->requester)) {
char *server_date = Cache_parse_field(header, "Date");
a_Cookies_set(Cookies, entry->Url, server_date);
dFree(server_date);
break;
}
}
}
if (i >= dList_length(ClientQueue)) {
MSG("Cache: cookies not accepted from '%s'\n", URL_STR(entry->Url));
}
for (i = 0; (data = dList_nth_data(Cookies, i)); ++i)
dFree(data);
dList_free(Cookies);
}
#endif /* !DISABLE_COOKIES */
/*
* Get Content-Encoding and initialize decoder
*/
encoding = Cache_parse_field(header, "Content-Encoding");
entry->ContentDecoder = a_Decode_content_init(encoding);
dFree(encoding);
if (entry->ExpectedSize > 0) {
if (entry->ExpectedSize > HUGE_FILESIZE) {
entry->Flags |= CA_HugeFile;
}
/* Avoid some reallocs. With MAX_INIT_BUF we avoid a SEGFAULT
* with huge files (e.g. iso files).
* Note: the buffer grows automatically. */
dStr_free(entry->Data, 1);
entry->Data = dStr_sized_new(MIN(entry->ExpectedSize, MAX_INIT_BUF));
}
/* Get Content-Type */
if ((Type = Cache_parse_field(header, "Content-Type"))) {
/* This HTTP Content-Type is not trusted. It's checked against real data
* in Cache_process_queue(); only then CA_GotContentType becomes true. */
a_Cache_set_content_type(entry->Url, Type, "http");
_MSG("TypeHdr {%s} {%s}\n", Type, URL_STR(entry->Url));
_MSG("TypeMeta {%s}\n", entry->TypeMeta);
dFree(Type);
}
Cache_ref_data(entry);
}
static void Decode_chunked_free(Decode *dc)
{
dFree(dc->state);
dStr_free(dc->leftover, 1);
}
/*
* Receive new data, update the reception buffer (for next read), update the
* cache, and service the client queue.
*
* This function gets called whenever the IO has new data.
* 'Op' is the operation to perform
* 'VPtr' is a (void) pointer to the IO control structure
*/
bool_t a_Cache_process_dbuf(int Op, const char *buf, size_t buf_size,
const DilloUrl *Url)
{
int offset, len;
const char *str;
Dstr *dstr1, *dstr2, *dstr3;
bool_t done = FALSE;
CacheEntry_t *entry = Cache_entry_search(Url);
/* Assert a valid entry (not aborted) */
dReturn_val_if_fail (entry != NULL, FALSE);
_MSG("__a_Cache_process_dbuf__\n");
if (Op == IORead) {
/*
* Cache_get_header() will set CA_GotHeader if it has a full header, and
* Cache_parse_header() will unset it if the header ends being
* merely an informational response from the server (i.e., 100 Continue)
*/
for (offset = 0; !(entry->Flags & CA_GotHeader) &&
(len = Cache_get_header(entry, buf + offset, buf_size - offset));
Cache_parse_header(entry) ) {
offset += len;
}
if (entry->Flags & CA_GotHeader) {
str = buf + offset;
len = buf_size - offset;
entry->TransferSize += len;
dstr1 = dstr2 = dstr3 = NULL;
/* Decode arrived data (<= 3 stages) */
if (entry->TransferDecoder) {
dstr1 = a_Decode_transfer_process(entry->TransferDecoder, str,len);
done = a_Decode_transfer_finished(entry->TransferDecoder);
str = dstr1->str;
len = dstr1->len;
}
if (entry->ContentDecoder) {
dstr2 = a_Decode_process(entry->ContentDecoder, str, len);
str = dstr2->str;
len = dstr2->len;
}
dStr_append_l(entry->Data, str, len);
if (entry->CharsetDecoder && entry->UTF8Data) {
dstr3 = a_Decode_process(entry->CharsetDecoder, str, len);
dStr_append_l(entry->UTF8Data, dstr3->str, dstr3->len);
}
dStr_free(dstr1, 1);
dStr_free(dstr2, 1);
dStr_free(dstr3, 1);
if (entry->Data->len)
entry->Flags &= ~CA_IsEmpty;
if ((entry->Flags & CA_GotLength) &&
(entry->TransferSize >= entry->ExpectedSize)) {
done = TRUE;
}
if (!(entry->Flags & CA_KeepAlive)) {
/* Let IOClose finish it later */
done = FALSE;
}
entry = Cache_process_queue(entry);
if (entry && done)
Cache_finish_msg(entry);
}
} else if (Op == IOClose) {
Cache_finish_msg(entry);
} else if (Op == IOAbort) {
int i;
CacheClient_t *Client;
for (i = 0; (Client = dList_nth_data(ClientQueue, i)); ++i) {
if (Client->Url == entry->Url) {
DilloWeb *web = (DilloWeb *)Client->Web;
a_Bw_remove_client(web->bw, Client->Key);
Cache_client_dequeue(Client);
--i; /* Keep the index value in the next iteration */
}
}
}
return done;
}
