[project @ 2003-05-22 13:21:45 by bursa]

Form GET support (John M Bell)

svn path=/import/netsurf/; revision=130

desktop/browser.c

@@ -1,5 +1,5 @@
 /**
- * $Id: browser.c,v 1.36 2003/05/10 11:13:34 bursa Exp $
+ * $Id: browser.c,v 1.37 2003/05/22 13:21:45 bursa Exp $
  */
 
 #include "netsurf/content/cache.h"
@@ -11,6 +11,7 @@
 #include "netsurf/utils/utils.h"
 #include "libxml/uri.h"
 #include "libxml/debugXML.h"
+#include "curl/curl.h"
 #include <string.h>
 #include <stdlib.h>
 #include <assert.h>
@@ -36,6 +37,9 @@ static void gui_redraw_gadget2(struct browser_window* bw, struct box* box, struc
 		unsigned long x, unsigned long y);
 static void browser_window_gadget_select(struct browser_window* bw, struct gui_gadget* g, int item);
 static int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x, unsigned long click_y);
+static void browser_form_submit(struct browser_window *bw, struct form *form);
+static char* browser_form_construct_get(struct page_elements *elements, struct formsubmit* fs);
+static void browser_form_get_append(char **s, int *length, char sep, char *name, char *value);
 
 
 void browser_window_start_throbber(struct browser_window* bw)
@@ -418,8 +422,11 @@ int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x
 					gui_redraw_gadget(bw, g);
 					break;
 				case GADGET_ACTIONBUTTON:
+				        /* redraw button */
 					g->data.actionbutt.pressed = -1;
 					gui_redraw_gadget(bw, g);
+					if (stricmp(g->data.actionbutt.butttype,"submit") == 0)
+						browser_form_submit(bw, g->form);
 					break;
 				case GADGET_TEXTAREA:
 					gui_edit_textarea(bw, g);
@@ -866,3 +873,115 @@ void browser_window_redraw_boxes(struct browser_window* bw, struct box_position*
 }
 
 
+void browser_form_submit(struct browser_window *bw, struct form *form)
+{
+	/*create submission request*/
+	struct formsubmit* fs = (struct formsubmit*) xcalloc(1, sizeof(struct formsubmit));
+	fs->form = form;
+	/*fs->items = g;*/
+	LOG(("Submission request created"));
+
+	if (fs->form->method == method_GET) {
+		/*GET request*/
+		/*GET basically munges the entire form data
+		into one URL. */
+
+		char *url = browser_form_construct_get(&bw->current_content->data.html.elements,
+				fs);
+
+		LOG(("GET request"));
+
+		/*send request*/
+		browser_window_open_location(bw, url);
+                xfree(url);
+
+        } else {
+		/*POST request*/
+		assert(fs->form->method == method_POST);
+
+		LOG(("POST request - not implemented yet"));
+
+		/*POST is a standard HTTP method.
+		Basically, it creates a new request
+		and sends the form data as the request
+		body.*/
+	}
+
+	xfree(fs);
+}
+
+
+char* browser_form_construct_get(struct page_elements *elements, struct formsubmit* fs)
+{
+  char *ret;
+  int i,j, length;
+  struct formoption* opt;
+
+  ret = xstrdup(fs->form->action);
+  length = strlen(ret);
+
+  j=0;
+  for (i=0;i<elements->numGadgets;i++){
+    if(elements->gadgets[i]->form == fs->form){
+           
+      if(elements->gadgets[i]->name != 0){
+        char *value = 0;
+
+        switch(elements->gadgets[i]->type){
+
+          case GADGET_HIDDEN:   value = elements->gadgets[i]->data.hidden.value;
+                                break;
+          case GADGET_TEXTBOX:  value = elements->gadgets[i]->data.textbox.text;
+                                break;
+          case GADGET_RADIO:    if(elements->gadgets[i]->data.radio.selected == -1)
+                                  value = elements->gadgets[i]->data.radio.value;
+                                break;
+          case GADGET_CHECKBOX: if(elements->gadgets[i]->data.checkbox.selected == 1)
+                                  value = elements->gadgets[i]->data.checkbox.value;
+                                break;
+          case GADGET_SELECT:   opt = elements->gadgets[i]->data.select.items;
+                                while(opt != NULL){
+                                  if(opt->selected == -1 || opt->selected == 1) {
+                                    browser_form_get_append(&ret, &length, j == 0 ? '?' : '&',
+                                                    elements->gadgets[i]->name, opt->value);
+                                    j++;
+                                  }
+                                  opt = opt->next;
+                                }
+                                break;
+          case GADGET_TEXTAREA: value = elements->gadgets[i]->data.textarea.text;
+                                break;
+          default:              break;
+        }
+
+        if (value != 0) {
+          browser_form_get_append(&ret, &length, j == 0 ? '?' : '&',
+			  elements->gadgets[i]->name, value);
+          j++;
+        }
+      }
+      
+    }
+  }
+  return ret;
+}
+
+
+void browser_form_get_append(char **s, int *length, char sep, char *name, char *value)
+{
+	unsigned int length1;
+
+	name = curl_escape(name, 0);
+	value = curl_escape(value, 0);
+	length1 = 2 + strlen(name) + strlen(value);
+
+	LOG(("append %c%s=%s, length1 %i, *s %p", sep, name, value, length1, *s));
+	*s = xrealloc(*s, *length + length1 + 1);
+
+	sprintf(*s + *length, "%c%s=%s", sep, name, value);
+	*length += length1;
+
+	curl_free(name);
+	curl_free(value);
+}
+

developer

@@ -103,6 +103,7 @@ http://netsurf.strcprstskrzkrk.co.uk/developer/
 libxml (XML and HTML parser)		http://xmlsoft.org/
 libcurl (HTTP, FTP, etc)		http://curl.haxx.se/libcurl/
 OSLib (C interface to RISC OS SWIs)	http://ro-oslib.sourceforge.net/
-libutf-8				http://www.whizkidtech.redprince.net/i18n/
+libpng (PNG support)			http://www.libpng.org/pub/png/libpng.html
+zlib					http://www.gzip.org/zlib/
 
 ________________________________________________________________________________

render/box.c

@@ -1,5 +1,5 @@
 /**
- * $Id: box.c,v 1.43 2003/04/25 08:03:15 bursa Exp $
+ * $Id: box.c,v 1.44 2003/05/22 13:21:45 bursa Exp $
  */
 
 #include <assert.h>
@@ -1270,6 +1270,9 @@ struct box* box_input(xmlNode * n, struct css_style* style, struct form* current
 			if ((s = (char *) xmlGetProp(n, (const xmlChar *) "name"))) {
 				box->gadget->name = s;
 			}
+
+                        box->gadget->data.actionbutt.butttype = strdup(type);
+                        
 			add_gadget_element(elements, box->gadget);
 		}
 

render/box.h

@@ -1,5 +1,5 @@
 /**
- * $Id: box.h,v 1.24 2003/04/15 17:53:00 bursa Exp $
+ * $Id: box.h,v 1.25 2003/05/22 13:21:45 bursa Exp $
  */
 
 #ifndef _NETSURF_RENDER_BOX_H_
@@ -49,6 +49,7 @@ struct gui_gadget {
 			int size;
 		} textbox;
 		struct {
+		        char* butttype;
 			char* label;
 			int pressed;
 		} actionbutt;

utils/utils.c

@@ -1,5 +1,5 @@
 /**
- * $Id: utils.c,v 1.8 2003/04/11 21:06:51 bursa Exp $
+ * $Id: utils.c,v 1.9 2003/05/22 13:21:45 bursa Exp $
  */
 
 #include <ctype.h>
@@ -135,11 +135,48 @@ char *squash_tolat1(xmlChar *s)
 
 char *url_join(const char* new, const char* base)
 {
-  char* ret;
+  char* ret, *nn;
-  int i;
+  int i,j,k;
 
   LOG(("new = %s, base = %s", new, base));
 
+  /* deal with spaces and quotation marks in URLs etc.
+     also removes spaces from end of links.
+     There's definitely a better way to do this */
+  nn = xcalloc(strlen(new) * 3 + 40, sizeof(char));
+  j=0;
+  for(i=0;i<strlen(new);i++){
+
+    if(new[i] == ' '){  /* space */
+
+      nn[j] = '%';
+      nn[j+1] = '2';
+      nn[j+2] = '0';
+      j+=2;
+    }
+    else if(new[i] == '"'){   /* quotes */
+
+      nn[j] = '%';
+      nn[j+1] = '2';
+      nn[j+2] = '2';
+      j+=2;
+      k = j;
+    }
+    else{
+
+      nn[j] = new[i];
+      k = j;
+    }
+        
+    j++;
+  }
+  if(k < j){
+    nn[k+1] = '\0';
+    LOG(("before: %s after: %s", new, nn));
+  }
+  
+  new = nn;
+
   if (base == 0)
   {
     /* no base, so make an absolute URL */
@@ -184,6 +221,8 @@ char *url_join(const char* new, const char* base)
     ret = xcalloc(strlen(new) + 10, sizeof(char));
     strcpy(ret, new);
   }
+
+  xfree(nn); 
   return ret;
 }