| | 1 | | // Copyright (c) Microsoft Corporation. All rights reserved. |
| | 2 | | // Licensed under the MIT License. |
| | 3 | |
|
| | 4 | | using System; |
| | 5 | | using System.Linq; |
| | 6 | | using System.Net; |
| | 7 | | using System.Text; |
| | 8 | | using Azure.Core; |
| | 9 | | using Azure.Storage.Sas; |
| | 10 | | using Azure.Storage.Shared; |
| | 11 | |
|
| | 12 | | namespace Azure.Storage.Files.Shares |
| | 13 | | { |
| | 14 | | /// <summary> |
| | 15 | | /// The <see cref="ShareUriBuilder"/> class provides a convenient way to |
| | 16 | | /// modify the contents of a <see cref="System.Uri"/> instance to point to |
| | 17 | | /// different Azure Storage resources like an account, share, or file. |
| | 18 | | /// |
| | 19 | | /// For more information, see |
| | 20 | | /// <see href="https://docs.microsoft.com/en-us/rest/api/storageservices/naming-and-referencing-shares--directories- |
| | 21 | | /// Naming and Referencing Shares, Directories, Files, and Metadata</see>. |
| | 22 | | /// </summary> |
| | 23 | | public class ShareUriBuilder |
| | 24 | | { |
| | 25 | | /// <summary> |
| | 26 | | /// The Uri instance constructed by this builder. It will be reset to |
| | 27 | | /// null when changes are made and reconstructed when <see cref="System.Uri"/> |
| | 28 | | /// is accessed. |
| | 29 | | /// </summary> |
| | 30 | | private Uri _uri; |
| | 31 | |
|
| | 32 | | /// <summary> |
| | 33 | | /// Whether the Uri is an IP Uri as determined by |
| | 34 | | /// <see cref="UriExtensions.IsHostIPEndPointStyle"/>. |
| | 35 | | /// </summary> |
| | 36 | | private readonly bool _isIPStyleUri; |
| | 37 | |
|
| | 38 | | /// <summary> |
| | 39 | | /// Gets or sets the scheme name of the URI. |
| | 40 | | /// Example: "https" |
| | 41 | | /// </summary> |
| | 42 | | public string Scheme |
| | 43 | | { |
| 939 | 44 | | get => _scheme; |
| 3501 | 45 | | set { ResetUri(); _scheme = value; } |
| | 46 | | } |
| | 47 | | private string _scheme; |
| | 48 | |
|
| | 49 | | /// <summary> |
| | 50 | | /// Gets or sets the Domain Name System (DNS) host name or IP address |
| | 51 | | /// of a server. |
| | 52 | | /// |
| | 53 | | /// Example: "account.file.core.windows.net" |
| | 54 | | /// </summary> |
| | 55 | | public string Host |
| | 56 | | { |
| 939 | 57 | | get => _host; |
| 3501 | 58 | | set { ResetUri(); _host = value; } |
| | 59 | | } |
| | 60 | | private string _host; |
| | 61 | |
|
| | 62 | | /// <summary> |
| | 63 | | /// Gets or sets the port number of the URI. |
| | 64 | | /// </summary> |
| | 65 | | public int Port |
| | 66 | | { |
| 939 | 67 | | get => _port; |
| 3501 | 68 | | set { ResetUri(); _port = value; } |
| | 69 | | } |
| | 70 | | private int _port; |
| | 71 | |
|
| | 72 | | /// <summary> |
| | 73 | | /// Gets or sets the Azure Storage account name. |
| | 74 | | /// </summary> |
| | 75 | | public string AccountName |
| | 76 | | { |
| 208 | 77 | | get => _accountName; |
| 7002 | 78 | | set { ResetUri(); _accountName = value; } |
| | 79 | | } |
| | 80 | | private string _accountName; |
| | 81 | |
|
| | 82 | | /// <summary> |
| | 83 | | /// Gets or sets the name of a file storage share. The value defaults |
| | 84 | | /// to <see cref="string.Empty"/> if not present in the |
| | 85 | | /// <see cref="System.Uri"/>. |
| | 86 | | /// |
| | 87 | | /// </summary> |
| | 88 | | public string ShareName |
| | 89 | | { |
| 2040 | 90 | | get => _shareName; |
| 7158 | 91 | | set { ResetUri(); _shareName = value; } |
| | 92 | | } |
| | 93 | | private string _shareName; |
| | 94 | |
|
| | 95 | | /// <summary> |
| | 96 | | /// Gets or sets the path of the directory or file. The value defaults |
| | 97 | | /// to <see cref="string.Empty"/> if not present in the |
| | 98 | | /// <see cref="System.Uri"/>. |
| | 99 | | /// Example: "mydirectory/myfile" |
| | 100 | | /// </summary> |
| | 101 | | public string DirectoryOrFilePath |
| | 102 | | { |
| 722 | 103 | | get => _directoryOrFilePath; |
| | 104 | | set |
| | 105 | | { |
| 2522 | 106 | | ResetUri(); |
| 2522 | 107 | | _directoryOrFilePath = value; |
| 2522 | 108 | | } |
| | 109 | | } |
| | 110 | | private string _directoryOrFilePath; |
| | 111 | |
|
| | 112 | | /// <summary> |
| | 113 | | /// Gets or sets the name of a file snapshot. The value defaults to |
| | 114 | | /// <see cref="string.Empty"/> if not present in the <see cref="System.Uri"/>. |
| | 115 | | /// </summary> |
| | 116 | | public string Snapshot |
| | 117 | | { |
| 985 | 118 | | get => _snapshot; |
| 3639 | 119 | | set { ResetUri(); _snapshot = value; } |
| | 120 | | } |
| | 121 | | private string _snapshot; |
| | 122 | |
|
| | 123 | | /// <summary> |
| | 124 | | /// Gets or sets the Shared Access Signature query parameters, or null |
| | 125 | | /// if not present in the <see cref="System.Uri"/>. |
| | 126 | | /// </summary> |
| | 127 | | public SasQueryParameters Sas |
| | 128 | | { |
| 959 | 129 | | get => _sas; |
| 3741 | 130 | | set { ResetUri(); _sas = value; } |
| | 131 | | } |
| | 132 | | private SasQueryParameters _sas; |
| | 133 | |
|
| | 134 | | /// <summary> |
| | 135 | | /// Get the last directory or file name from the <see cref="DirectoryOrFilePath"/>, or null if |
| | 136 | | /// not present in the <see cref="Uri"/>. |
| | 137 | | /// </summary> |
| | 138 | | internal string LastDirectoryOrFileName => |
| 184 | 139 | | DirectoryOrFilePath.TrimEnd('/').Split('/').LastOrDefault(); |
| | 140 | |
|
| | 141 | | /// <summary> |
| | 142 | | /// Gets or sets any query information included in the URI that's not |
| | 143 | | /// relevant to addressing Azure storage resources. |
| | 144 | | /// </summary> |
| | 145 | | public string Query |
| | 146 | | { |
| 939 | 147 | | get => _query; |
| 3501 | 148 | | set { ResetUri(); _query = value; } |
| | 149 | | } |
| | 150 | | private string _query; |
| | 151 | |
|
| | 152 | | /// <summary> |
| | 153 | | /// Initializes a new instance of the <see cref="ShareUriBuilder"/> |
| | 154 | | /// class with the specified <see cref="System.Uri"/>. |
| | 155 | | /// </summary> |
| | 156 | | /// <param name="uri"> |
| | 157 | | /// The <see cref="System.Uri"/> to a storage resource. |
| | 158 | | /// </param> |
| 1167 | 159 | | public ShareUriBuilder(Uri uri) |
| | 160 | | { |
| 1167 | 161 | | Scheme = uri.Scheme; |
| 1167 | 162 | | Host = uri.Host; |
| 1167 | 163 | | Port = uri.Port; |
| 1167 | 164 | | AccountName = ""; |
| | 165 | |
|
| 1167 | 166 | | ShareName = ""; |
| 1167 | 167 | | DirectoryOrFilePath = ""; |
| | 168 | |
|
| 1167 | 169 | | Snapshot = ""; |
| 1167 | 170 | | Sas = null; |
| | 171 | |
|
| | 172 | | // Find the share & directory/file path (if any) |
| 1167 | 173 | | if (!string.IsNullOrEmpty(uri.AbsolutePath)) |
| | 174 | | { |
| | 175 | | // If path starts with a slash, remove it |
| | 176 | |
|
| 1167 | 177 | | var path = uri.GetPath(); |
| | 178 | |
|
| 1167 | 179 | | var startIndex = 0; |
| | 180 | |
|
| 1167 | 181 | | if (uri.IsHostIPEndPointStyle()) |
| | 182 | | { |
| 6 | 183 | | _isIPStyleUri = true; |
| 6 | 184 | | var accountEndIndex = path.IndexOf("/", StringComparison.InvariantCulture); |
| | 185 | |
|
| | 186 | | // Slash not found; path has account name & no share name |
| 6 | 187 | | if (accountEndIndex == -1) |
| | 188 | | { |
| 4 | 189 | | AccountName = path; |
| 4 | 190 | | startIndex = path.Length; |
| | 191 | | } |
| | 192 | | else |
| | 193 | | { |
| 2 | 194 | | AccountName = path.Substring(0, accountEndIndex); |
| 2 | 195 | | startIndex = accountEndIndex + 1; |
| | 196 | | } |
| | 197 | | } |
| | 198 | | else |
| | 199 | | { |
| 1161 | 200 | | AccountName = uri.GetAccountNameFromDomain(Constants.File.UriSubDomain) ?? string.Empty; |
| | 201 | | } |
| | 202 | |
|
| | 203 | | // Find the next slash (if it exists) |
| | 204 | |
|
| 1167 | 205 | | var shareEndIndex = path.IndexOf("/", startIndex, StringComparison.InvariantCulture); |
| 1167 | 206 | | if (shareEndIndex == -1) |
| | 207 | | { |
| | 208 | | // Slash not found; path has share name & no directory/file path |
| 653 | 209 | | ShareName = path.Substring(startIndex); |
| | 210 | | } |
| | 211 | | else |
| | 212 | | { |
| | 213 | | // The share name is the part between the slashes |
| 514 | 214 | | ShareName = path.Substring(startIndex, shareEndIndex - startIndex); |
| | 215 | |
|
| | 216 | | // The directory/file path name is after the share slash |
| 514 | 217 | | DirectoryOrFilePath = path.Substring(shareEndIndex + 1).Trim('/').UnescapePath(); |
| | 218 | | } |
| | 219 | | } |
| | 220 | |
|
| | 221 | | // Convert the query parameters to a case-sensitive map & trim whitespace |
| | 222 | |
|
| 1167 | 223 | | var paramsMap = new UriQueryParamsCollection(uri.Query); |
| | 224 | |
|
| 1167 | 225 | | if (paramsMap.TryGetValue(Constants.File.SnapshotParameterName, out var snapshotTime)) |
| | 226 | | { |
| 22 | 227 | | Snapshot = snapshotTime; |
| | 228 | |
|
| | 229 | | // If we recognized the query parameter, remove it from the map |
| 22 | 230 | | paramsMap.Remove(Constants.File.SnapshotParameterName); |
| | 231 | | } |
| | 232 | |
|
| 1167 | 233 | | if (paramsMap.ContainsKey(Constants.Sas.Parameters.Version)) |
| | 234 | | { |
| 74 | 235 | | Sas = SasQueryParametersInternals.Create(paramsMap); |
| | 236 | | } |
| | 237 | |
|
| 1167 | 238 | | Query = paramsMap.ToString(); |
| 1167 | 239 | | } |
| | 240 | |
|
| | 241 | | /// <summary> |
| | 242 | | /// Returns the <see cref="System.Uri"/> constructed from the |
| | 243 | | /// <see cref="ShareUriBuilder"/>'s fields. The <see cref="Uri.Query"/> |
| | 244 | | /// property contains the SAS and additional query parameters. |
| | 245 | | /// </summary> |
| | 246 | | public Uri ToUri() |
| | 247 | | { |
| 929 | 248 | | if (_uri == null) |
| | 249 | | { |
| 929 | 250 | | _uri = BuildUri().ToUri(); |
| | 251 | | } |
| 929 | 252 | | return _uri; |
| | 253 | | } |
| | 254 | |
|
| | 255 | | /// <summary> |
| | 256 | | /// Returns the display string for the specified |
| | 257 | | /// <see cref="ShareUriBuilder"/> instance. |
| | 258 | | /// </summary> |
| | 259 | | /// <returns> |
| | 260 | | /// The display string for the specified <see cref="ShareUriBuilder"/> |
| | 261 | | /// instance. |
| | 262 | | /// </returns> |
| | 263 | | public override string ToString() => |
| 0 | 264 | | BuildUri().ToString(); |
| | 265 | |
|
| | 266 | | /// <summary> |
| | 267 | | /// Reset our cached URI. |
| | 268 | | /// </summary> |
| | 269 | | private void ResetUri() => |
| 14370 | 270 | | _uri = null; |
| | 271 | |
|
| | 272 | | /// <summary> |
| | 273 | | /// Construct a <see cref="RequestUriBuilder"/> representing the |
| | 274 | | /// <see cref="ShareUriBuilder"/>'s fields. The <see cref="Uri.Query"/> |
| | 275 | | /// property contains the SAS, snapshot, and additional query parameters. |
| | 276 | | /// </summary> |
| | 277 | | /// <returns>The constructed <see cref="RequestUriBuilder"/>.</returns> |
| | 278 | | private RequestUriBuilder BuildUri() |
| | 279 | | { |
| | 280 | | // Concatenate account, share & directory/file path (if they exist) |
| 929 | 281 | | var path = new StringBuilder(""); |
| | 282 | | // only append the account name to the path for Ip style Uri. |
| | 283 | | // regular style Uri will already have account name in domain |
| 929 | 284 | | if (_isIPStyleUri && !string.IsNullOrWhiteSpace(AccountName)) |
| | 285 | | { |
| 2 | 286 | | path.Append("/").Append(AccountName); |
| | 287 | | } |
| 929 | 288 | | if (!string.IsNullOrWhiteSpace(ShareName)) |
| | 289 | | { |
| 915 | 290 | | path.Append("/").Append(ShareName); |
| 915 | 291 | | if (!string.IsNullOrWhiteSpace(_directoryOrFilePath)) |
| | 292 | | { |
| 817 | 293 | | path.Append("/").Append(_directoryOrFilePath.EscapePath()); |
| | 294 | | } |
| | 295 | | } |
| | 296 | |
|
| | 297 | | // Concatenate query parameters |
| 929 | 298 | | var query = new StringBuilder(Query); |
| 929 | 299 | | if (!string.IsNullOrWhiteSpace(Snapshot)) |
| | 300 | | { |
| 0 | 301 | | if (query.Length > 0) { query.Append("&"); } |
| 34 | 302 | | query.Append(Constants.File.SnapshotParameterName).Append("=").Append(Snapshot); |
| | 303 | | } |
| 929 | 304 | | var sas = Sas?.ToString(); |
| 929 | 305 | | if (!string.IsNullOrWhiteSpace(sas)) |
| | 306 | | { |
| 82 | 307 | | if (query.Length > 0) { query.Append("&"); } |
| 80 | 308 | | query.Append(sas); |
| | 309 | | } |
| | 310 | |
|
| | 311 | | // Use RequestUriBuilder, which has slightly nicer formatting |
| 929 | 312 | | return new RequestUriBuilder |
| 929 | 313 | | { |
| 929 | 314 | | Scheme = Scheme, |
| 929 | 315 | | Host = Host, |
| 929 | 316 | | Port = Port, |
| 929 | 317 | | Path = path.ToString(), |
| 929 | 318 | | Query = query.Length > 0 ? "?" + query.ToString() : null |
| 929 | 319 | | }; |
| | 320 | | } |
| | 321 | | } |
| | 322 | | } |