| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: url.cpp |
| 3 | // Purpose: URL parser |
| 4 | // Author: Guilhem Lavaux |
| 5 | // Modified by: |
| 6 | // Created: 20/07/1997 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) 1997, 1998 Guilhem Lavaux |
| 9 | // Licence: wxWindows license |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "url.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #include <string.h> |
| 24 | #include <ctype.h> |
| 25 | |
| 26 | #include "wx/string.h" |
| 27 | #include "wx/list.h" |
| 28 | #include "wx/utils.h" |
| 29 | #include "wx/url.h" |
| 30 | |
| 31 | IMPLEMENT_CLASS(wxProtoInfo, wxObject) |
| 32 | IMPLEMENT_CLASS(wxURL, wxObject) |
| 33 | |
| 34 | // Protocols list |
| 35 | wxProtoInfo *wxURL::g_protocols = NULL; |
| 36 | |
| 37 | #if wxUSE_SOCKETS |
| 38 | wxHTTP *wxURL::g_proxy = NULL; |
| 39 | #endif |
| 40 | |
| 41 | // -------------------------------------------------------------- |
| 42 | // wxURL |
| 43 | // -------------------------------------------------------------- |
| 44 | |
| 45 | // -------------------------------------------------------------- |
| 46 | // --------- wxURL CONSTRUCTOR DESTRUCTOR ----------------------- |
| 47 | // -------------------------------------------------------------- |
| 48 | |
| 49 | wxURL::wxURL(const wxString& url) |
| 50 | { |
| 51 | m_protocol = NULL; |
| 52 | m_error = wxURL_NOERR; |
| 53 | m_url = url; |
| 54 | #if wxUSE_SOCKETS |
| 55 | m_useProxy = (g_proxy != NULL); |
| 56 | m_proxy = g_proxy; |
| 57 | #endif |
| 58 | ParseURL(); |
| 59 | } |
| 60 | |
| 61 | bool wxURL::ParseURL() |
| 62 | { |
| 63 | wxString last_url = m_url; |
| 64 | |
| 65 | // If the URL was already parsed (so m_protocol != NULL), we pass this section. |
| 66 | if (!m_protocol) { |
| 67 | |
| 68 | // Clean up |
| 69 | CleanData(); |
| 70 | |
| 71 | // Extract protocol name |
| 72 | if (!PrepProto(last_url)) { |
| 73 | m_error = wxURL_SNTXERR; |
| 74 | return FALSE; |
| 75 | } |
| 76 | |
| 77 | // Find and create the protocol object |
| 78 | if (!FetchProtocol()) { |
| 79 | m_error = wxURL_NOPROTO; |
| 80 | return FALSE; |
| 81 | } |
| 82 | |
| 83 | // Do we need a host name ? |
| 84 | if (m_protoinfo->m_needhost) { |
| 85 | // Extract it |
| 86 | if (!PrepHost(last_url)) { |
| 87 | m_error = wxURL_SNTXERR; |
| 88 | return FALSE; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | // Extract full path |
| 93 | if (!PrepPath(last_url)) { |
| 94 | m_error = wxURL_NOPATH; |
| 95 | return FALSE; |
| 96 | } |
| 97 | } |
| 98 | // URL parse finished. |
| 99 | |
| 100 | #if wxUSE_SOCKETS |
| 101 | if (m_useProxy) { |
| 102 | // We destroy the newly created protocol. |
| 103 | CleanData(); |
| 104 | |
| 105 | // Third, we rebuild the URL. |
| 106 | m_url = m_protoname + wxT(":"); |
| 107 | if (m_protoinfo->m_needhost) |
| 108 | m_url = m_url + wxT("//") + m_hostname; |
| 109 | |
| 110 | m_url += m_path; |
| 111 | |
| 112 | // We initialize specific variables. |
| 113 | m_protocol = m_proxy; // FIXME: we should clone the protocol |
| 114 | } |
| 115 | #endif |
| 116 | |
| 117 | m_error = wxURL_NOERR; |
| 118 | return TRUE; |
| 119 | } |
| 120 | |
| 121 | void wxURL::CleanData() |
| 122 | { |
| 123 | #if wxUSE_SOCKETS |
| 124 | if (!m_useProxy) |
| 125 | #endif |
| 126 | delete m_protocol; |
| 127 | } |
| 128 | |
| 129 | wxURL::~wxURL() |
| 130 | { |
| 131 | CleanData(); |
| 132 | #if wxUSE_SOCKETS |
| 133 | if (m_proxy && m_proxy != g_proxy) |
| 134 | delete m_proxy; |
| 135 | #endif |
| 136 | } |
| 137 | |
| 138 | // -------------------------------------------------------------- |
| 139 | // --------- wxURL urls decoders -------------------------------- |
| 140 | // -------------------------------------------------------------- |
| 141 | |
| 142 | bool wxURL::PrepProto(wxString& url) |
| 143 | { |
| 144 | int pos; |
| 145 | |
| 146 | // Find end |
| 147 | pos = url.Find(wxT(':')); |
| 148 | if (pos == -1) |
| 149 | return FALSE; |
| 150 | |
| 151 | m_protoname = url(0, pos); |
| 152 | |
| 153 | url = url(pos+1, url.Length()); |
| 154 | |
| 155 | return TRUE; |
| 156 | } |
| 157 | |
| 158 | bool wxURL::PrepHost(wxString& url) |
| 159 | { |
| 160 | wxString temp_url; |
| 161 | int pos, pos2; |
| 162 | |
| 163 | if ((url.GetChar(0) != wxT('/')) || (url.GetChar(1) != wxT('/'))) |
| 164 | return FALSE; |
| 165 | |
| 166 | url = url(2, url.Length()); |
| 167 | |
| 168 | pos = url.Find(wxT('/')); |
| 169 | if (pos == -1) |
| 170 | pos = url.Length(); |
| 171 | |
| 172 | if (pos == 0) |
| 173 | return FALSE; |
| 174 | |
| 175 | temp_url = url(0, pos); |
| 176 | url = url(url.Find(wxT('/')), url.Length()); |
| 177 | |
| 178 | // Retrieve service number |
| 179 | pos2 = temp_url.Find(wxT(':'), TRUE); |
| 180 | if (pos2 != -1 && pos2 < pos) { |
| 181 | m_servname = temp_url(pos2+1, pos); |
| 182 | if (!m_servname.IsNumber()) |
| 183 | return FALSE; |
| 184 | temp_url = temp_url(0, pos2); |
| 185 | } |
| 186 | |
| 187 | // Retrieve user and password. |
| 188 | pos2 = temp_url.Find(wxT('@')); |
| 189 | // Even if pos2 equals -1, this code is right. |
| 190 | m_hostname = temp_url(pos2+1, temp_url.Length()); |
| 191 | |
| 192 | m_user = wxT(""); |
| 193 | m_password = wxT(""); |
| 194 | |
| 195 | if (pos2 == -1) |
| 196 | return TRUE; |
| 197 | |
| 198 | temp_url = temp_url(0, pos2); |
| 199 | pos2 = temp_url.Find(wxT(':')); |
| 200 | |
| 201 | if (pos2 == -1) |
| 202 | return FALSE; |
| 203 | |
| 204 | m_user = temp_url(0, pos2); |
| 205 | m_password = temp_url(pos2+1, url.Length()); |
| 206 | |
| 207 | return TRUE; |
| 208 | } |
| 209 | |
| 210 | bool wxURL::PrepPath(wxString& url) |
| 211 | { |
| 212 | if (url.Length() != 0) |
| 213 | m_path = ConvertToValidURI(url); |
| 214 | else |
| 215 | m_path = wxT("/"); |
| 216 | return TRUE; |
| 217 | } |
| 218 | |
| 219 | bool wxURL::FetchProtocol() |
| 220 | { |
| 221 | wxProtoInfo *info = g_protocols; |
| 222 | |
| 223 | while (info) { |
| 224 | if (m_protoname == info->m_protoname) { |
| 225 | if (m_servname.IsNull()) |
| 226 | m_servname = info->m_servname; |
| 227 | |
| 228 | m_protoinfo = info; |
| 229 | m_protocol = (wxProtocol *)m_protoinfo->m_cinfo->CreateObject(); |
| 230 | return TRUE; |
| 231 | } |
| 232 | info = info->next; |
| 233 | } |
| 234 | return FALSE; |
| 235 | } |
| 236 | |
| 237 | // -------------------------------------------------------------- |
| 238 | // --------- wxURL get ------------------------------------------ |
| 239 | // -------------------------------------------------------------- |
| 240 | |
| 241 | wxInputStream *wxURL::GetInputStream() |
| 242 | { |
| 243 | wxInputStream *the_i_stream = NULL; |
| 244 | |
| 245 | if (!m_protocol) { |
| 246 | m_error = wxURL_NOPROTO; |
| 247 | return NULL; |
| 248 | } |
| 249 | |
| 250 | m_error = wxURL_NOERR; |
| 251 | if (m_user != wxT("")) { |
| 252 | m_protocol->SetUser(m_user); |
| 253 | m_protocol->SetPassword(m_password); |
| 254 | } |
| 255 | |
| 256 | #if wxUSE_SOCKETS |
| 257 | wxIPV4address addr; |
| 258 | |
| 259 | // m_protoinfo is NULL when we use a proxy |
| 260 | if (!m_useProxy && m_protoinfo->m_needhost) { |
| 261 | if (!addr.Hostname(m_hostname)) { |
| 262 | m_error = wxURL_NOHOST; |
| 263 | return NULL; |
| 264 | } |
| 265 | |
| 266 | addr.Service(m_servname); |
| 267 | |
| 268 | if (!m_protocol->Connect(addr, TRUE)) // Watcom needs the 2nd arg for some reason |
| 269 | { |
| 270 | m_error = wxURL_CONNERR; |
| 271 | return NULL; |
| 272 | } |
| 273 | } |
| 274 | #endif |
| 275 | |
| 276 | // When we use a proxy, we have to pass the whole URL to it. |
| 277 | if (m_useProxy) |
| 278 | the_i_stream = m_protocol->GetInputStream(m_url); |
| 279 | else |
| 280 | the_i_stream = m_protocol->GetInputStream(m_path); |
| 281 | |
| 282 | if (!the_i_stream) { |
| 283 | m_error = wxURL_PROTOERR; |
| 284 | return NULL; |
| 285 | } |
| 286 | |
| 287 | return the_i_stream; |
| 288 | } |
| 289 | |
| 290 | #if wxUSE_SOCKETS |
| 291 | void wxURL::SetDefaultProxy(const wxString& url_proxy) |
| 292 | { |
| 293 | if (url_proxy.IsNull()) { |
| 294 | g_proxy->Close(); |
| 295 | delete g_proxy; |
| 296 | g_proxy = NULL; |
| 297 | return; |
| 298 | } |
| 299 | |
| 300 | wxString tmp_str = url_proxy; |
| 301 | int pos = tmp_str.Find(wxT(':')); |
| 302 | if (pos == -1) |
| 303 | return; |
| 304 | |
| 305 | wxString hostname = tmp_str(0, pos), |
| 306 | port = tmp_str(pos+1, tmp_str.Length()-pos); |
| 307 | wxIPV4address addr; |
| 308 | |
| 309 | if (!addr.Hostname(hostname)) |
| 310 | return; |
| 311 | if (!addr.Service(port)) |
| 312 | return; |
| 313 | |
| 314 | if (g_proxy) |
| 315 | // Finally, when all is right, we connect the new proxy. |
| 316 | g_proxy->Close(); |
| 317 | else |
| 318 | g_proxy = new wxHTTP(); |
| 319 | g_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason |
| 320 | } |
| 321 | |
| 322 | void wxURL::SetProxy(const wxString& url_proxy) |
| 323 | { |
| 324 | if (url_proxy.IsNull()) { |
| 325 | if (m_proxy) { |
| 326 | m_proxy->Close(); |
| 327 | delete m_proxy; |
| 328 | } |
| 329 | m_useProxy = FALSE; |
| 330 | return; |
| 331 | } |
| 332 | |
| 333 | wxString tmp_str; |
| 334 | wxString hostname, port; |
| 335 | int pos; |
| 336 | wxIPV4address addr; |
| 337 | |
| 338 | tmp_str = url_proxy; |
| 339 | pos = tmp_str.Find(wxT(':')); |
| 340 | // This is an invalid proxy name. |
| 341 | if (pos == -1) |
| 342 | return; |
| 343 | |
| 344 | hostname = tmp_str(0, pos); |
| 345 | port = tmp_str(pos, tmp_str.Length()-pos); |
| 346 | |
| 347 | addr.Hostname(hostname); |
| 348 | addr.Service(port); |
| 349 | |
| 350 | // Finally, create the whole stuff. |
| 351 | if (m_proxy && m_proxy != g_proxy) |
| 352 | delete m_proxy; |
| 353 | m_proxy = new wxHTTP(); |
| 354 | m_proxy->Connect(addr, TRUE); // Watcom needs the 2nd arg for some reason |
| 355 | |
| 356 | CleanData(); |
| 357 | // Reparse url. |
| 358 | m_useProxy = TRUE; |
| 359 | ParseURL(); |
| 360 | } |
| 361 | #endif |
| 362 | |
| 363 | wxString wxURL::ConvertToValidURI(const wxString& uri) |
| 364 | { |
| 365 | wxString out_str; |
| 366 | wxString hexa_code; |
| 367 | size_t i; |
| 368 | |
| 369 | for (i=0;i<uri.Len();i++) { |
| 370 | wxChar c = uri.GetChar(i); |
| 371 | |
| 372 | if (c == wxT(' ')) |
| 373 | out_str += wxT('+'); |
| 374 | else { |
| 375 | if (!isalpha(c) && c != wxT('.') && c != wxT('+') && c != wxT('/')) { |
| 376 | hexa_code.Printf(wxT("%%%02X"), c); |
| 377 | out_str += hexa_code; |
| 378 | } else |
| 379 | out_str += c; |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | return out_str; |
| 384 | } |
| 385 | |
| 386 | wxString wxURL::ConvertFromURI(const wxString& uri) |
| 387 | { |
| 388 | wxString new_uri; |
| 389 | |
| 390 | size_t i = 0; |
| 391 | while (i<uri.Len()) { |
| 392 | int code; |
| 393 | if (uri[i] == wxT('%')) { |
| 394 | i++; |
| 395 | if (uri[i] >= wxT('A') && uri[i] <= wxT('F')) |
| 396 | code = (uri[i] - wxT('A') + 10) * 16; |
| 397 | else |
| 398 | code = (uri[i] - wxT('0')) * 16; |
| 399 | i++; |
| 400 | if (uri[i] >= wxT('A') && uri[i] <= wxT('F')) |
| 401 | code += (uri[i] - wxT('A')) + 10; |
| 402 | else |
| 403 | code += (uri[i] - wxT('0')); |
| 404 | i++; |
| 405 | new_uri += (wxChar)code; |
| 406 | continue; |
| 407 | } |
| 408 | new_uri += uri[i]; |
| 409 | i++; |
| 410 | } |
| 411 | return new_uri; |
| 412 | } |