webish: add upload/view-uri forms (not associated with any particular directory) to the welcome page. Document POST /uri?t=upload .

docs/webapi.txt

@@ -169,9 +169,16 @@ f. uploading a file
    in: file contents
    out: file write cap
 
-  Upload a file, returning its URI as the HTTP response body. This does not
+   Upload a file, using the data from the HTTP request body, and returning
-  make the file visible from the virtual drive -- to do that, see section
+   the resulting URI as the HTTP response body. This does not make the file
-  1.h. below, or the convenience method in section 2.a..
+   visible from the virtual drive -- to do that, see section 1.h. below, or
+   the convenience method in section 2.a..
+
+  POST http://localhost:8123/uri?t=upload
+
+   This action also uploads a file without attaching it to a virtual drive
+   directory, but can be used from an HTML form. The response is the file
+   write cap.
 
 g. creating a new directory
 
@@ -347,7 +354,8 @@ c. POST forms
   (browsers do not know how to do PUT or DELETE). The file's contents and the
   new child name will be included in the form's arguments. This can only be
   used to upload a single file at a time. To avoid confusion, name= is not
-  allowed to contain a slash (a 400 Bad Request error will result).
+  allowed to contain a slash (a 400 Bad Request error will result). The
+  response is the file read-cap (URI) of the resulting file.
 
 
   POST $URL
@@ -359,7 +367,8 @@ c. POST forms
   This instructs the node to upload a file into the given directory, using a
   mutable file (SSK) rather than the usual immutable file (CHK). As a result,
   further operations to the same $URL will not cause the identity of the file
-  to change.
+  to change. The response is the file write-cap (URI) of the resulting
+  mutable file.
 
 
   POST $URL

src/allmydata/test/test_web.py

@@ -1191,7 +1191,7 @@ class Web(WebMixin, unittest.TestCase):
         # Fetch the welcome page.
         d = self.GET("/")
         def _after_get_welcome_page(res):
-            MKDIR_BUTTON_RE=re.compile('<form action="([^"]*)" method="post".*<input type="hidden" name="t" value="([^"]*)" /><input type="hidden" name="([^"]*)" value="([^"]*)" /><input type="submit" value="create" />', re.I)
+            MKDIR_BUTTON_RE=re.compile('<form action="([^"]*)" method="post".*<input type="hidden" name="t" value="([^"]*)" /><input type="hidden" name="([^"]*)" value="([^"]*)" /><input type="submit" value="Create Directory!" />', re.I)
             mo = MKDIR_BUTTON_RE.search(res)
             formaction = mo.group(1)
             formt = mo.group(2)

src/allmydata/web/welcome.xhtml

@@ -56,8 +56,12 @@ tool</a> may also be useful.</div>
 </table>
 </div>
 
-<div n:render="download_form"/>
+<br />
-<div n:render="mkdir_form"/>
+
+<div n:render="download_form" />
+<div n:render="view_form" />
+<div n:render="upload_form" />
+<div n:render="mkdir_form" />
 
   </body>
 </html>

src/allmydata/webish.py

@@ -1398,29 +1398,55 @@ class Root(rend.Page):
 
         return ctx.tag
 
-    # this is a form where users can download files by URI
     def render_download_form(self, ctx, data):
+        # this is a form where users can download files by URI
         form = T.form(action="uri", method="get",
                       enctype="multipart/form-data")[
             T.fieldset[
-            T.legend(class_="freeform-form-label")["download a file"],
+            T.legend(class_="freeform-form-label")["Download a file"],
-            "URI of file to download: ",
+            "URI to download: ",
             T.input(type="text", name="uri"), " ",
             "Filename to download as: ",
             T.input(type="text", name="filename"), " ",
-            T.input(type="submit", value="download"),
+            T.input(type="submit", value="Download!"),
             ]]
         return T.div[form]
 
-    # this is a form where users can create new directories
+    def render_view_form(self, ctx, data):
-    def render_mkdir_form(self, ctx, data):
+        # this is a form where users can download files by URI, or jump to a
+        # named directory
+        form = T.form(action="uri", method="get",
+                      enctype="multipart/form-data")[
+            T.fieldset[
+            T.legend(class_="freeform-form-label")["View a file or directory"],
+            "URI to view: ",
+            T.input(type="text", name="uri"), " ",
+            T.input(type="submit", value="View!"),
+            ]]
+        return T.div[form]
+
+    def render_upload_form(self, ctx, data):
+        # this is a form where users can upload unlinked files
         form = T.form(action="uri", method="post",
                       enctype="multipart/form-data")[
             T.fieldset[
-            T.legend(class_="freeform-form-label")["create a directory"],
+            T.legend(class_="freeform-form-label")["Upload a file"],
+            "Choose a file: ",
+            T.input(type="file", name="file", class_="freeform-input-file"),
+            T.input(type="hidden", name="t", value="upload"),
+            T.input(type="submit", value="Upload!"),
+            ]]
+        return T.div[form]
+
+    def render_mkdir_form(self, ctx, data):
+        # this is a form where users can create new directories
+        form = T.form(action="uri", method="post",
+                      enctype="multipart/form-data")[
+            T.fieldset[
+            T.legend(class_="freeform-form-label")["Create a directory"],
             T.input(type="hidden", name="t", value="mkdir"),
             T.input(type="hidden", name="redirect_to_result", value="true"),
-            T.input(type="submit", value="create"),
+            T.input(type="submit", value="Create Directory!"),
             ]]
         return T.div[form]