public bool SubmitReview(int authorId, int assignmentId, byte[] zippedReviewData, string authToken)
{
if (!_authService.IsValidKey(authToken))
{
return(false);
}
try
{
UserProfile profile = _authService.GetActiveUser(authToken);
Assignment assignment = _db.Assignments.Find(assignmentId);
CourseUser courseUser = (from cu in _db.CourseUsers
where cu.AbstractCourseID == assignment.CourseID
&&
cu.UserProfileID == profile.ID
select cu).FirstOrDefault();
Team reviewTeam = (from tm in _db.TeamMembers
join rt in _db.ReviewTeams on tm.TeamID equals rt.ReviewTeamID
where tm.CourseUserID == courseUser.ID &&
rt.AssignmentID == assignmentId
select tm.Team).FirstOrDefault();
MemoryStream ms = new MemoryStream(zippedReviewData);
ms.Position = 0;
using (ZipFile file = ZipFile.Read(ms))
{
foreach (ZipEntry entry in file.Entries)
{
using (MemoryStream extractStream = new MemoryStream())
{
entry.Extract(extractStream);
extractStream.Position = 0;
// Get the storage object for the review
OSBLEDirectory fs = Models.FileSystem.Directories.GetReview(
(int)assignment.CourseID, assignmentId, authorId, reviewTeam.ID);
// Delete existing first
fs.DeleteContents(true, true);
//add the extracted file to the file system
bool result = fs.AddFile(entry.FileName, extractStream);
if (result == false)
{
return(false);
}
}
}
}
}
catch (Exception)
{
return(false);
}
return(true);
}
public void ProcessRequest(HttpContext context)
{
HttpFileCollection coll;
//yc: set the max upload size
try
{
coll = context.Request.Files;
context.Response.ContentType = "text/xml";
if (0 == coll.Count)
{
WriteErrorResponse(context,
"Course file upload service requires one or more files in the request. " +
"It's possible that your browser did not correctly send the file data " +
"and you may need to update your browser if the problem persists.");
return;
}
// We're expecting the course ID to be in a parameter (required)
string courseIDParam = context.Request.Params["courseID"];
if (string.IsNullOrEmpty(courseIDParam))
{
WriteErrorResponse(context,
"Course file upload service requires a \"courseID\" parameter.");
return;
}
// Make sure the course ID is an integer and a valid course ID at that
int courseID;
if (!int.TryParse(courseIDParam, out courseID))
{
WriteErrorResponse(context,
"The course ID must be a valid integer value.");
return;
}
// There might be an optional "target_folder" parameter
string targetFolderParam = context.Request.Params["target_folder"];
// Try to get the current OSBLE user
Models.Users.UserProfile up = OSBLE.Utility.OsbleAuthentication.CurrentUser;
if (null == up)
{
// In the future what I'd like to do here is look for a user name and
// password in the request headers. This would allow this web service to
// be used by other sources, but for now it requires a logged in OSBLE user.
WriteErrorResponse(context,
"Could not get active OSBLE user for request. Please login.");
return;
}
// Make sure this user has permission to upload to this course
OSBLEContext _db = new OSBLEContext();
CourseUser courseUser = (
from cu in _db.CourseUsers
where cu.UserProfileID == up.ID
&&
cu.AbstractCourse is AbstractCourse
&&
cu.AbstractCourseID == courseID
select cu
).FirstOrDefault();
if (null == courseUser || !courseUser.AbstractRole.CanUploadFiles)
{
// User cannot upload files for this course
context.Response.Write(
"<CourseFilesUploaderResponse success=\"false\">" +
" <Message>The specified user does not have access to course with ID=" +
courseID.ToString() + ". User must be " +
"a course owner to access this service.</Message>" +
"</CourseFilesUploaderResponse>");
return;
}
// We will look for an optional "fileusage" parameter that tells us where
// the file(s) will go. By default we use "generic" if the parameter is
// absent.
string fileUsage = context.Request.Params["fileusage"];
if (string.IsNullOrEmpty(fileUsage))
{
// Default to "generic", which puts files in the CourseDocs folder.
fileUsage = "generic";
}
else
{
fileUsage = fileUsage.ToLower();
}
// Save based on the usage
if ("generic" == fileUsage)
{
OSBLEDirectory location = Models.FileSystem.Directories.GetCourseDocs(courseID);
// For now the target folder parameter is only allowed for generic files
if (!string.IsNullOrEmpty(targetFolderParam) &&
"\\" != targetFolderParam &&
"/" != targetFolderParam)
{
// We can't let it start with / or \
while (targetFolderParam.StartsWith("\\"))
{
targetFolderParam = targetFolderParam.Substring(1);
}
while (targetFolderParam.StartsWith("/"))
{
targetFolderParam = targetFolderParam.Substring(1);
}
location = location.GetDir(targetFolderParam);
if (null == location)
{
WriteErrorResponse(context,
"Could not upload to target folder: " + targetFolderParam);
return;
}
}
// Save each file to the target directory
for (int i = 0; i < coll.Count; i++)
{
HttpPostedFile postedFile = coll[i];
//yc: check the file size in MB
int size = postedFile.ContentLength / 1024 / 1024; //contentLenght(BYTES)/ 1024 (gets KB) / 1024 (GETS MB)
if (size < 30)
{
}
else
{
//too large
}
string fileName = Path.GetFileName(postedFile.FileName);
location.AddFile(fileName, postedFile.InputStream);
}
context.Response.Write(string.Format(
"<CourseFilesUploaderResponse success=\"true\">" +
" <Message>Successfully uploaded {0} files</Message>" +
"</CourseFilesUploaderResponse>", coll.Count));
return;
}
else if ("assignment_description" == fileUsage ||
"assignment_solution" == fileUsage)
{
// In this case we also need an assignment ID parameter
string aIDString = context.Request.Params["assignmentID"];
if (string.IsNullOrEmpty(aIDString))
{
WriteErrorResponse(context,
"An \"assignmentID\" parameter is required when uploading a " +
"file for an assignment " +
(("assignment_description" == fileUsage) ? "description." : "solution."));
return;
}
int aID;
if (!int.TryParse(aIDString, out aID))
{
WriteErrorResponse(context,
"The \"assignmentID\" parameter must be an integer value.");
return;
}
// Assignment must exist
Models.FileSystem.AssignmentFilePath afs =
Models.FileSystem.Directories.GetAssignment(courseID, aID);
if (null == afs)
{
WriteErrorResponse(context,
"Could not get assignment file path for assignment: " + aIDString);
return;
}
// Get the attributable files storage for this assignment
OSBLE.Models.FileSystem.OSBLEDirectory attrFiles = afs.AttributableFiles;
if (null == attrFiles)
{
WriteErrorResponse(context,
"Internal error: could not get attributable files manager for assignment");
return;
}
// Set up the system attributes for this file
Dictionary <string, string> sys = new Dictionary <string, string>();
sys.Add("created", DateTime.Now.ToString());
sys.Add(fileUsage, aIDString);
sys.Add("uploadedby", up.UserName);
if ("assignment_solution" != fileUsage)
{
sys.Add("any_course_user_can_download", null);
}
// Save each file to the target directory
for (int i = 0; i < coll.Count; i++)
{
HttpPostedFile postedFile = coll[i];
string fileName = Path.GetFileName(postedFile.FileName);
attrFiles.AddFile(fileName, postedFile.InputStream, sys, null);
}
context.Response.Write(string.Format(
"<CourseFilesUploaderResponse success=\"true\">" +
" <Message>Successfully uploaded {0} files</Message>" +
"</CourseFilesUploaderResponse>", coll.Count));
return;
}
// Coming here implies we didn't recognize the file usage
WriteErrorResponse(context, "Unsupported file usage: " + fileUsage);
}
catch (HttpException ex)
{
if (ex.WebEventCode == 3004)
{
WriteErrorResponse(context, "File exceeds 30MB upload limit");
return;
}
}
// This web service returns XML
}