/* we have a buffer for sending that we now seem to be able to deliver
since the receive pausing is lifted! */
- /* get the pointer, type and length in local copies since the function may
- return PAUSE again and then we'll get a new copy allocted and stored in
+ /* get the pointer in local copy since the function may return PAUSE
+ again and then we'll get a new copy allocted and stored in
the tempwrite variables */
char *tempwrite = data->state.tempwrite;
- char *freewrite = tempwrite; /* store this pointer to free it later */
- size_t tempsize = data->state.tempwritesize;
- int temptype = data->state.tempwritetype;
- size_t chunklen;
-
- /* clear tempwrite here just to make sure it gets cleared if there's no
- further use of it, and make sure we don't clear it after the function
- invoke as it may have been set to a new value by then */
- data->state.tempwrite = NULL;
-
- /* since the write callback API is define to never exceed
- CURL_MAX_WRITE_SIZE bytes in a single call, and since we may in fact
- have more data than that in our buffer here, we must loop sending the
- data in multiple calls until there's no data left or we get another
- pause returned.
-
- A tricky part is that the function we call will "buffer" the data
- itself when it pauses on a particular buffer, so we may need to do some
- extra trickery if we get a pause return here.
- */
- do {
- chunklen = (tempsize > CURL_MAX_WRITE_SIZE)?CURL_MAX_WRITE_SIZE:tempsize;
-
- result = Curl_client_write(data->easy_conn,
- temptype, tempwrite, chunklen);
- if(result)
- /* failures abort the loop at once */
- break;
-
- if(data->state.tempwrite && (tempsize - chunklen)) {
- /* Ouch, the reading is again paused and the block we send is now
- "cached". If this is the final chunk we can leave it like this, but
- if we have more chunks that are cached after this, we need to free
- the newly cached one and put back a version that is truly the entire
- contents that is saved for later
- */
- char *newptr;
-
- /* note that tempsize is still the size as before the callback was
- used, and thus the whole piece of data to keep */
- newptr = realloc(data->state.tempwrite, tempsize);
-
- if(!newptr) {
- free(data->state.tempwrite); /* free old area */
- data->state.tempwrite = NULL;
- result = CURLE_OUT_OF_MEMORY;
- /* tempwrite will be freed further down */
- break;
- }
- data->state.tempwrite = newptr; /* store new pointer */
- memcpy(newptr, tempwrite, tempsize);
- data->state.tempwritesize = tempsize; /* store new size */
- /* tempwrite will be freed further down */
- break; /* go back to pausing until further notice */
- }
- else {
- tempsize -= chunklen; /* left after the call above */
- tempwrite += chunklen; /* advance the pointer */
- }
- } while(!result && tempsize);
-
- free(freewrite); /* this is unconditionally no longer used */
+ data->state.tempwrite = NULL;
+ result = Curl_client_chop_write(data->easy_conn, data->state.tempwritetype,
+ tempwrite, data->state.tempwritesize);
+ free(tempwrite);
}
/* if there's no error and we're not pausing both directions, we want
}
-/* Curl_client_write() sends data to the write callback(s)
-
- The bit pattern defines to what "streams" to write to. Body and/or header.
- The defines are in sendf.h of course.
-
- If CURL_DO_LINEEND_CONV is enabled, data is converted IN PLACE to the
- local character encoding. This is a problem and should be changed in
- the future to leave the original data alone.
+/* Curl_client_chop_write() writes chunks of data not larger than
+ * CURL_MAX_WRITE_SIZE via client write callback(s) and
+ * takes care of pause requests from the callbacks.
*/
-CURLcode Curl_client_write(struct connectdata *conn,
- int type,
- char *ptr,
- size_t len)
+CURLcode Curl_client_chop_write(struct connectdata *conn,
+ int type,
+ char * ptr,
+ size_t len)
{
struct SessionHandle *data = conn->data;
- size_t wrote;
+ curl_write_callback writeheader = NULL;
+ curl_write_callback writebody = NULL;
- if(0 == len)
- len = strlen(ptr);
+ if(!len)
+ return CURLE_OK;
/* If reading is actually paused, we're forced to append this chunk of data
to the already held data, but only if it is the same type as otherwise it
/* update the pointer and the size */
data->state.tempwrite = newptr;
data->state.tempwritesize = newlen;
-
return CURLE_OK;
}
- if(type & CLIENTWRITE_BODY) {
- if((conn->handler->protocol&PROTO_FAMILY_FTP) &&
- conn->proto.ftpc.transfertype == 'A') {
- /* convert from the network encoding */
- CURLcode result = Curl_convert_from_network(data, ptr, len);
- /* Curl_convert_from_network calls failf if unsuccessful */
- if(result)
- return result;
+ /* Determine the callback(s) to use. */
+ if(type & CLIENTWRITE_BODY)
+ writebody = data->set.fwrite_func;
+ if((type & CLIENTWRITE_HEADER) &&
+ (data->set.fwrite_header || data->set.writeheader)) {
+ /*
+ * Write headers to the same callback or to the especially setup
+ * header callback function (added after version 7.7.1).
+ */
+ writeheader =
+ data->set.fwrite_header? data->set.fwrite_header: data->set.fwrite_func;
+ }
+
+ /* Chop data, write chunks. */
+ while(len) {
+ size_t chunklen = len <= CURL_MAX_WRITE_SIZE? len: CURL_MAX_WRITE_SIZE;
-#ifdef CURL_DO_LINEEND_CONV
- /* convert end-of-line markers */
- len = convert_lineends(data, ptr, len);
-#endif /* CURL_DO_LINEEND_CONV */
- }
- /* If the previous block of data ended with CR and this block of data is
- just a NL, then the length might be zero */
- if(len) {
- wrote = data->set.fwrite_func(ptr, 1, len, data->set.out);
- }
- else {
- wrote = len;
- }
+ if(writebody) {
+ size_t wrote = writebody(ptr, 1, chunklen, data->set.out);
- if(CURL_WRITEFUNC_PAUSE == wrote) {
- if(conn->handler->flags & PROTOPT_NONETWORK) {
- /* Protocols that work without network cannot be paused. This is
- actually only FILE:// just now, and it can't pause since the
- transfer isn't done using the "normal" procedure. */
- failf(data, "Write callback asked for PAUSE when not supported!");
+ if(CURL_WRITEFUNC_PAUSE == wrote) {
+ if(conn->handler->flags & PROTOPT_NONETWORK) {
+ /* Protocols that work without network cannot be paused. This is
+ actually only FILE:// just now, and it can't pause since the
+ transfer isn't done using the "normal" procedure. */
+ failf(data, "Write callback asked for PAUSE when not supported!");
+ return CURLE_WRITE_ERROR;
+ }
+ else
+ return pausewrite(data, type, ptr, len);
+ }
+ else if(wrote != chunklen) {
+ failf(data, "Failed writing body (%zu != %zu)", wrote, chunklen);
return CURLE_WRITE_ERROR;
}
- else
- return pausewrite(data, type, ptr, len);
- }
- else if(wrote != len) {
- failf(data, "Failed writing body (%zu != %zu)", wrote, len);
- return CURLE_WRITE_ERROR;
}
- }
- if((type & CLIENTWRITE_HEADER) &&
- (data->set.fwrite_header || data->set.writeheader) ) {
- /*
- * Write headers to the same callback or to the especially setup
- * header callback function (added after version 7.7.1).
- */
- curl_write_callback writeit=
- data->set.fwrite_header?data->set.fwrite_header:data->set.fwrite_func;
-
- /* Note: The header is in the host encoding
- regardless of the ftp transfer mode (ASCII/Image) */
-
- wrote = writeit(ptr, 1, len, data->set.writeheader);
- if(CURL_WRITEFUNC_PAUSE == wrote)
- /* here we pass in the HEADER bit only since if this was body as well
- then it was passed already and clearly that didn't trigger the pause,
- so this is saved for later with the HEADER bit only */
- return pausewrite(data, CLIENTWRITE_HEADER, ptr, len);
-
- if(wrote != len) {
- failf (data, "Failed writing header");
- return CURLE_WRITE_ERROR;
+ if(writeheader) {
+ size_t wrote = writeheader(ptr, 1, chunklen, data->set.writeheader);
+
+ if(CURL_WRITEFUNC_PAUSE == wrote)
+ /* here we pass in the HEADER bit only since if this was body as well
+ then it was passed already and clearly that didn't trigger the
+ pause, so this is saved for later with the HEADER bit only */
+ return pausewrite(data, CLIENTWRITE_HEADER, ptr, len);
+
+ if(wrote != chunklen) {
+ failf (data, "Failed writing header");
+ return CURLE_WRITE_ERROR;
+ }
}
+
+ ptr += chunklen;
+ len -= chunklen;
}
return CURLE_OK;
}
+
+/* Curl_client_write() sends data to the write callback(s)
+
+ The bit pattern defines to what "streams" to write to. Body and/or header.
+ The defines are in sendf.h of course.
+
+ If CURL_DO_LINEEND_CONV is enabled, data is converted IN PLACE to the
+ local character encoding. This is a problem and should be changed in
+ the future to leave the original data alone.
+ */
+CURLcode Curl_client_write(struct connectdata *conn,
+ int type,
+ char *ptr,
+ size_t len)
+{
+ struct SessionHandle *data = conn->data;
+
+ if(0 == len)
+ len = strlen(ptr);
+
+ /* FTP data may need conversion. */
+ if((type & CLIENTWRITE_BODY) &&
+ (conn->handler->protocol & PROTO_FAMILY_FTP) &&
+ conn->proto.ftpc.transfertype == 'A') {
+ /* convert from the network encoding */
+ CURLcode result = Curl_convert_from_network(data, ptr, len);
+ /* Curl_convert_from_network calls failf if unsuccessful */
+ if(result)
+ return result;
+
+#ifdef CURL_DO_LINEEND_CONV
+ /* convert end-of-line markers */
+ len = convert_lineends(data, ptr, len);
+#endif /* CURL_DO_LINEEND_CONV */
+ }
+
+ return Curl_client_chop_write(conn, type, ptr, len);
+}
+
CURLcode Curl_read_plain(curl_socket_t sockfd,
char *buf,
size_t bytesfromsocket,
projects / curl / commitdiff