/* return 0 on success, non-zero on failure */
static int get_request(curl_socket_t sock, struct httprequest *req)
{
int error;
int fail = 0;
int done_processing = 0;
char *reqbuf = req->reqbuf;
ssize_t got = 0;
char *pipereq = NULL;
size_t pipereq_length = 0;
if(req->pipelining) {
pipereq = reqbuf + req->checkindex;
pipereq_length = req->offset - req->checkindex;
}
/*** Init the httprequest structure properly for the upcoming request ***/
req->checkindex = 0;
req->offset = 0;
req->testno = DOCNUMBER_NOTHING;
req->partno = 0;
req->open = TRUE;
req->auth_req = FALSE;
req->auth = FALSE;
req->cl = 0;
req->digest = FALSE;
req->ntlm = FALSE;
req->pipe = 0;
req->skip = 0;
req->rcmd = RCMD_NORMALREQ;
req->protocol = RPROT_NONE;
req->prot_version = 0;
req->pipelining = FALSE;
req->rtp_buffer = NULL;
req->rtp_buffersize = 0;
/*** end of httprequest init ***/
while(!done_processing && (req->offset < REQBUFSIZ-1)) {
if(pipereq_length && pipereq) {
memmove(reqbuf, pipereq, pipereq_length);
got = curlx_uztosz(pipereq_length);
pipereq_length = 0;
}
else {
if(req->skip)
/* we are instructed to not read the entire thing, so we make sure to only
read what we're supposed to and NOT read the enire thing the client
wants to send! */
got = sread(sock, reqbuf + req->offset, req->cl);
else
got = sread(sock, reqbuf + req->offset, REQBUFSIZ-1 - req->offset);
}
if(got_exit_signal)
return 1;
if(got == 0) {
logmsg("Connection closed by client");
fail = 1;
}
else if(got < 0) {
error = SOCKERRNO;
logmsg("recv() returned error: (%d) %s", error, strerror(error));
fail = 1;
}
if(fail) {
/* dump the request received so far to the external file */
reqbuf[req->offset] = '\0';
storerequest(reqbuf, req->offset);
return 1;
}
logmsg("Read %zd bytes", got);
req->offset += (size_t)got;
reqbuf[req->offset] = '\0';
done_processing = ProcessRequest(req);
if(got_exit_signal)
return 1;
if(done_processing && req->pipe) {
logmsg("Waiting for another piped request");
done_processing = 0;
req->pipe--;
}
}
if((req->offset == REQBUFSIZ-1) && (got > 0)) {
logmsg("Request would overflow buffer, closing connection");
/* dump request received so far to external file anyway */
reqbuf[REQBUFSIZ-1] = '\0';
fail = 1;
}
else if(req->offset > REQBUFSIZ-1) {
logmsg("Request buffer overflow, closing connection");
/* dump request received so far to external file anyway */
reqbuf[REQBUFSIZ-1] = '\0';
fail = 1;
}
else
reqbuf[req->offset] = '\0';
/* dump the request to an external file */
storerequest(reqbuf, req->pipelining ? req->checkindex : req->offset);
if(got_exit_signal)
return 1;
return fail; /* return 0 on success */
}
static CURLcode gopher_do(struct connectdata *conn, bool *done)
{
CURLcode result=CURLE_OK;
struct SessionHandle *data=conn->data;
curl_socket_t sockfd = conn->sock[FIRSTSOCKET];
curl_off_t *bytecount = &data->req.bytecount;
char *path = data->state.path;
char *sel;
char *sel_org = NULL;
ssize_t amount, k;
int len;
*done = TRUE; /* unconditionally */
/* Create selector. Degenerate cases: / and /1 => convert to "" */
if(strlen(path) <= 2) {
sel = (char *)"";
len = (int)strlen(sel);
}
else {
char *newp;
size_t j, i;
/* Otherwise, drop / and the first character (i.e., item type) ... */
newp = path;
newp+=2;
/* ... then turn ? into TAB for search servers, Veronica, etc. ... */
j = strlen(newp);
for(i=0; i<j; i++)
if(newp[i] == '?')
newp[i] = '\x09';
/* ... and finally unescape */
sel = curl_easy_unescape(data, newp, 0, &len);
if(!sel)
return CURLE_OUT_OF_MEMORY;
sel_org = sel;
}
/* We use Curl_write instead of Curl_sendf to make sure the entire buffer is
sent, which could be sizeable with long selectors. */
k = curlx_uztosz(len);
for(;;) {
result = Curl_write(conn, sockfd, sel, k, &amount);
if(!result) { /* Which may not have written it all! */
result = Curl_client_write(conn, CLIENTWRITE_HEADER, sel, amount);
if(result) {
free(sel_org);
return result;
}
k -= amount;
sel += amount;
if(k < 1)
break; /* but it did write it all */
}
else {
failf(data, "Failed sending Gopher request");
free(sel_org);
return result;
}
/* Don't busyloop. The entire loop thing is a work-around as it causes a
BLOCKING behavior which is a NO-NO. This function should rather be
split up in a do and a doing piece where the pieces that aren't
possible to send now will be sent in the doing function repeatedly
until the entire request is sent.
Wait a while for the socket to be writable. Note that this doesn't
acknowledge the timeout.
*/
Curl_socket_ready(CURL_SOCKET_BAD, sockfd, 100);
}
free(sel_org);
/* We can use Curl_sendf to send the terminal \r\n relatively safely and
save allocing another string/doing another _write loop. */
result = Curl_sendf(sockfd, conn, "\r\n");
if(result) {
failf(data, "Failed sending Gopher request");
return result;
}
result = Curl_client_write(conn, CLIENTWRITE_HEADER, (char *)"\r\n", 2);
if(result)
return result;
Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE, bytecount,
-1, NULL); /* no upload */
return CURLE_OK;
}
