public S3File(string virtualPath, S3VirtualPathProvider provider)
: base(virtualPath)
{
this.provider = provider;
//Must be inside virtual filesystem folder
if (!provider.IsPathVirtual(virtualPath)) throw new ArgumentException("S3 file path must be located within " + provider.VirtualFilesystemPrefix);
/////////// Parse path into bucket and key
//Strip prefix
String path = VirtualPath.Substring(provider.VirtualFilesystemPrefix.Length);
//strip leading slashes
path = path.TrimStart(new char[] { '/', '\\' });
//Now execute filter!
path = provider.FilterPath(path);
//strip leading slashes again
path = path.TrimStart(new char[] { '/', '\\' });
int keyStartsAt = path.IndexOf('/');
if (keyStartsAt < 0) throw new ArgumentException("S3 file path must specify a bucket" + path);
//Get bucket
bucket = path.Substring(0, keyStartsAt);
//Get key
key = path.Substring(keyStartsAt + 1).TrimStart(new char[] { '/', '\\' });
}
public S3File(string virtualPath, S3VirtualPathProvider provider)
: base(virtualPath)
{
this.provider = provider;
//Must be inside virtual filesystem folder
if (!provider.IsPathVirtual(virtualPath))
{
throw new ArgumentException("S3 file path must be located within " + provider.VirtualFilesystemPrefix);
}
/////////// Parse path into bucket and key
//Strip prefix
String path = VirtualPath.Substring(provider.VirtualFilesystemPrefix.Length);
//strip leading slashes
path = path.TrimStart(new char[] { '/', '\\' });
//Now execute filter!
path = provider.FilterPath(path);
//strip leading slashes again
path = path.TrimStart(new char[] { '/', '\\' });
int keyStartsAt = path.IndexOf('/');
if (keyStartsAt < 0)
{
throw new ArgumentException("S3 file path must specify a bucket" + path);
}
//Get bucket
bucket = path.Substring(0, keyStartsAt);
//Get key
key = path.Substring(keyStartsAt + 1).TrimStart(new char[] { '/', '\\' });
}
public IPlugin Install(Configuration.Config c)
{
if (vpp != null) throw new InvalidOperationException("This plugin can only be installed once, and cannot be uninstalled and reinstalled.");
if (string.IsNullOrEmpty(vpath)) vpath = "~/s3/";
string[] bucketArray = null;
if (!string.IsNullOrEmpty(buckets)) bucketArray = buckets.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
else c.configurationSectionIssues.AcceptIssue(new Issue("S3Reader", "S3Reader cannot function without a list of permitted bucket names.",
"Please specify a comma-delimited list of buckets in the <add name='S3Reader' buckets='bucketa,bucketb' /> element.",
IssueSeverity.ConfigurationError));
for (int i = 0; i < bucketArray.Length; i++)
bucketArray[i] = bucketArray[i].Trim();
vpp = new S3VirtualPathProvider(delegate(S3VirtualPathProvider s, S3PathEventArgs ev) {
if (bucketArray == null) ev.ThrowException();
ev.AssertBucketMatches(bucketArray);
}, !includeModifiedDate);
vpp.S3Client = S3Client;
vpp.VirtualFilesystemPrefix = vpath;
// vpp.MetadataAbsoluteExpiration
c.Pipeline.PostAuthorizeRequestStart += delegate(IHttpModule sender2, HttpContext context) {
//Only work with database images
//This allows us to resize database images without putting ".jpg" after the ID in the path.
if (!RequireImageExtension && vpp.IsPathVirtual(c.Pipeline.PreRewritePath))
c.Pipeline.SkipFileTypeCheck = true; //Skip the file extension check. FakeExtensions will still be stripped.
};
c.Pipeline.RewriteDefaults += delegate(IHttpModule sender, HttpContext context, Configuration.IUrlEventArgs e) {
//Only work with database images
//Non-images will be served as-is
//Cache all file types, whether they are processed or not.
if (CacheUnmodifiedFiles && vpp.IsPathVirtual(e.VirtualPath))
e.QueryString["cache"] = ServerCacheMode.Always.ToString();
};
c.Pipeline.PostRewrite += delegate(IHttpModule sender, HttpContext context, Configuration.IUrlEventArgs e) {
//Only work with database images
//If the data is untrusted, always re-encode each file.
if (UntrustedData && vpp.IsPathVirtual(e.VirtualPath))
e.QueryString["process"] = ImageResizer.ProcessWhen.Always.ToString();
};
if (asVpp) {
try {
//Registers the virtual path provider.
HostingEnvironment.RegisterVirtualPathProvider(vpp);
} catch (SecurityException) {
asVpp = false;
c.configurationSectionIssues.AcceptIssue(new Issue("S3Reader", "S3Reader could not be installed as a VirtualPathProvider due to missing AspNetHostingPermission."
,"It was installed as an IVirtualImageProvider instead, which means that only image URLs will be accessible, and only if they contain a querystring.\n" +
"Set vpp=false to tell S3Reader to register as an IVirtualImageProvider instead. <add name='S3Reader' vpp=false />", IssueSeverity.Error));
}
}
if (!asVpp) {
c.Plugins.VirtualProviderPlugins.Add(vpp);
}
//
c.Plugins.add_plugin(this);
return this;
}
public IPlugin Install(Configuration.Config c)
{
if (vpp != null)
{
throw new InvalidOperationException("This plugin can only be installed once, and cannot be uninstalled and reinstalled.");
}
if (string.IsNullOrEmpty(vpath))
{
vpath = "~/s3/";
}
string[] bucketArray = null;
if (!string.IsNullOrEmpty(buckets))
{
bucketArray = buckets.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
}
else
{
c.configurationSectionIssues.AcceptIssue(new Issue("S3Reader", "S3Reader cannot function without a list of permitted bucket names.",
"Please specify a comma-delimited list of buckets in the <add name='S3Reader' buckets='bucketa,bucketb' /> element.",
IssueSeverity.ConfigurationError));
}
for (int i = 0; i < bucketArray.Length; i++)
{
bucketArray[i] = bucketArray[i].Trim();
}
vpp = new S3VirtualPathProvider(delegate(S3VirtualPathProvider s, S3PathEventArgs ev) {
if (bucketArray == null)
{
ev.ThrowException();
}
ev.AssertBucketMatches(bucketArray);
}, !includeModifiedDate);
vpp.S3Client = S3Client;
vpp.VirtualFilesystemPrefix = vpath;
// vpp.MetadataAbsoluteExpiration
c.Pipeline.PostAuthorizeRequestStart += delegate(IHttpModule sender2, HttpContext context) {
//Only work with database images
//This allows us to resize database images without putting ".jpg" after the ID in the path.
if (!RequireImageExtension && vpp.IsPathVirtual(c.Pipeline.PreRewritePath))
{
c.Pipeline.SkipFileTypeCheck = true; //Skip the file extension check. FakeExtensions will still be stripped.
}
};
c.Pipeline.RewriteDefaults += delegate(IHttpModule sender, HttpContext context, Configuration.IUrlEventArgs e) {
//Only work with database images
//Non-images will be served as-is
//Cache all file types, whether they are processed or not.
if (CacheUnmodifiedFiles && vpp.IsPathVirtual(e.VirtualPath))
{
e.QueryString["cache"] = ServerCacheMode.Always.ToString();
}
};
c.Pipeline.PostRewrite += delegate(IHttpModule sender, HttpContext context, Configuration.IUrlEventArgs e) {
//Only work with database images
//If the data is untrusted, always re-encode each file.
if (UntrustedData && vpp.IsPathVirtual(e.VirtualPath))
{
e.QueryString["process"] = ImageResizer.ProcessWhen.Always.ToString();
}
};
if (asVpp)
{
try {
//Registers the virtual path provider.
HostingEnvironment.RegisterVirtualPathProvider(vpp);
} catch (SecurityException) {
asVpp = false;
c.configurationSectionIssues.AcceptIssue(new Issue("S3Reader", "S3Reader could not be installed as a VirtualPathProvider due to missing AspNetHostingPermission."
, "It was installed as an IVirtualImageProvider instead, which means that only image URLs will be accessible, and only if they contain a querystring.\n" +
"Set vpp=false to tell S3Reader to register as an IVirtualImageProvider instead. <add name='S3Reader' vpp=false />", IssueSeverity.Error));
}
}
if (!asVpp)
{
c.Plugins.VirtualProviderPlugins.Add(vpp);
}
//
c.Plugins.add_plugin(this);
return(this);
}
