/* Project nGenEx Destroyer Studios LLC Copyright © 1997-2004. All Rights Reserved. SUBSYSTEM: NetEx.lib FILE: HttpServer.cpp AUTHOR: John DiCamillo OVERVIEW ======== Network Server Pump for HTTP Server */ #include "MemDebug.h" #include "HttpServer.h" #include "NetLayer.h" #include #include #include // +-------------------------------------------------------------------+ HttpServer::HttpServer(WORD port, int poolsize) : NetServer(port, poolsize) { http_server_name = "Generic HttpServer 1.0"; } HttpServer::~HttpServer() { } // +--------------------------------------------------------------------+ Text HttpServer::ProcessRequest(Text msg, const NetAddr& addr) { HttpRequest request(msg); HttpResponse response; request.SetClientAddr(addr); switch (request.Method()) { case HttpRequest::HTTP_GET: if (DoGet(request, response)) return response; case HttpRequest::HTTP_POST: if (DoPost(request, response)) return response; case HttpRequest::HTTP_HEAD: if (DoHead(request, response)) return response; } return ErrorResponse(); } // +--------------------------------------------------------------------+ Text HttpServer::GetServerName() { return http_server_name; } void HttpServer::SetServerName(const char* name) { http_server_name = name; } // +--------------------------------------------------------------------+ Text HttpServer::DefaultResponse() { Text response = "HTTP/1.1 200 OK\nServer: "; response += http_server_name; response += "\nMIME-Version: 1.0\nContent-Type: text/html\nConnection: close\n\n"; return response; } Text HttpServer::ErrorResponse() { Text response = "HTTP/1.1 500 Internal Server Error\nServer:"; response += http_server_name; response += "\nMIME-Version: 1.0\nContent-Type: text/html\nConnection: close\n\n"; response += ""; response += http_server_name; response += " Error\n"; response += "\n

"; response += http_server_name; response += "

Veruca... sweetheart... angel... I'm not a magician!\n"; response += "\n\n"; return response; } // +--------------------------------------------------------------------+ bool HttpServer::DoGet(HttpRequest& request, HttpResponse& response) { char buffer[1024]; Text content; content = ""; content += http_server_name; content += "\n"; content += "\n

"; content += http_server_name; content += "

\n"; content += "

Client Address:

\n"; sprintf(buffer, "%d.%d.%d.%d:%d

\n", client_addr.B1(), client_addr.B2(), client_addr.B3(), client_addr.B4(), client_addr.Port()); content += buffer; content += "

Request Method:

\n"; switch (request.Method()) { case HttpRequest::HTTP_GET: content += "GET"; break; case HttpRequest::HTTP_POST: content += "POST"; break; case HttpRequest::HTTP_HEAD: content += "HEAD"; break; default: content += "(unsupported?)"; break; } content += "
\n"; content += "

URI Requested:

\n"; content += request.URI(); content += "
\n"; if (request.GetQuery().size() > 0) { content += "

Query Parameters:

\n"; ListIter q_iter = request.GetQuery(); while (++q_iter) { HttpParam* q = q_iter.value(); sprintf(buffer, "%s: %s
\n", q->name.data(), q->value.data()); content += buffer; } } content += "

Request Headers:

\n"; ListIter h_iter = request.GetHeaders(); while (++h_iter) { HttpParam* h = h_iter.value(); sprintf(buffer, "%s: %s
\n", h->name.data(), h->value.data()); content += buffer; } content += "\n\n"; response.SetStatus(HttpResponse::SC_OK); response.AddHeader("Server", http_server_name); response.AddHeader("MIME-Version", "1.0"); response.AddHeader("Content-Type", "text/html"); response.SetContent(content); return true; } // +--------------------------------------------------------------------+ bool HttpServer::DoPost(HttpRequest& request, HttpResponse& response) { return DoGet(request, response); } // +--------------------------------------------------------------------+ bool HttpServer::DoHead(HttpRequest& request, HttpResponse& response) { if (DoGet(request, response)) { int len = response.Content().length(); char buffer[256]; sprintf(buffer, "%d", len); response.SetHeader("Content-Length", buffer); response.SetContent(""); return true; } return false; } // +--------------------------------------------------------------------+ // +--------------------------------------------------------------------+ // +--------------------------------------------------------------------+ HttpRequest::HttpRequest(const char* r) : method(0) { if (r && *r) ParseRequest(r); } HttpRequest::~HttpRequest() { query.destroy(); headers.destroy(); cookies.destroy(); } // +--------------------------------------------------------------------+ void HttpRequest::ParseRequest(Text request) { if (request.length() <= 8) return; const char* pReq = 0; const char* pURI = 0; const char* pQuery = 0; switch (request[0]) { case 'G': if (request.indexOf("GET") == 0) method = HTTP_GET; break; case 'P': if (request.indexOf("POST") == 0) method = HTTP_POST; break; case 'H': if (request.indexOf("HEAD") == 0) method = HTTP_HEAD; break; default: break; } if (!method) return; char buffer[1024]; int i = 0; // save the request line: pReq = request.data(); while (*pReq && *pReq != '\n') buffer[i++] = *pReq++; buffer[i] = 0; request_line = buffer; i = 0; // find the URI: pURI = request.data(); while (*pURI && !isspace(*pURI)) pURI++; while (*pURI && isspace(*pURI)) pURI++; // copy the URI and find the query string: while (*pURI && *pURI != '?' && !isspace(*pURI)) { buffer[i++] = *pURI++; } buffer[i] = 0; uri = buffer; pQuery = pURI; // parse the query string: if (*pQuery == '?') { pQuery++; while (*pQuery && !isspace(*pQuery)) { char name_buf[1024]; char value_buf[1024]; i = 0; while (*pQuery && *pQuery != '=' && !isspace(*pQuery)) name_buf[i++] = *pQuery++; name_buf[i] = 0; if (*pQuery == '=') pQuery++; i = 0; while (*pQuery && *pQuery != '&' && !isspace(*pQuery)) value_buf[i++] = *pQuery++; value_buf[i] = 0; if (*pQuery == '&') pQuery++; HttpParam* param = new(__FILE__,__LINE__) HttpParam(name_buf, DecodeParam(value_buf)); if (param) query.append(param); } } // get the headers: const char* p = request.data(); while (*p && *p != '\n') p++; if (*p == '\n') p++; while (*p && *p != '\r' && *p != '\n') { char name_buf[1024]; char value_buf[1024]; i = 0; while (*p && *p != ':') name_buf[i++] = *p++; name_buf[i] = 0; p++; // skip ':' while (isspace(*p)) p++; // skip spaces i = 0; while (*p && *p != '\r' && *p != '\n') // read to end of header line value_buf[i++] = *p++; value_buf[i] = 0; if (!stricmp(name_buf, "Cookie")) { ParseCookie(value_buf); } else { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name_buf, value_buf); if (param) headers.append(param); } while (*p && *p != '\n') p++; if (*p == '\n') p++; } if (method == HTTP_POST && *p) { while (*p == '\n' || *p == '\r') p++; content = *p; pQuery = p; while (*pQuery && !isspace(*pQuery)) { char name_buf[1024]; char value_buf[1024]; i = 0; while (*pQuery && *pQuery != '=' && !isspace(*pQuery)) name_buf[i++] = *pQuery++; name_buf[i] = 0; if (*pQuery == '=') pQuery++; i = 0; while (*pQuery && *pQuery != '&' && !isspace(*pQuery)) value_buf[i++] = *pQuery++; value_buf[i] = 0; if (*pQuery == '&') pQuery++; HttpParam* param = new(__FILE__,__LINE__) HttpParam(name_buf, DecodeParam(value_buf)); if (param) query.append(param); } } } void HttpRequest::ParseCookie(const char* param) { const char* p = param; while (p && *p) { while (isspace(*p)) p++; // just ignore reserved attributes if (*p == '$') { while (*p && !isspace(*p) && *p != ';') p++; if (*p == ';') p++; } // found a cookie! else if (isalpha(*p)) { char name[1024]; char data[1024]; char* d = name; while (*p && *p != '=') *d++ = *p++; *d = 0; if (*p == '=') p++; if (*p == '"') p++; d = data; while (*p && *p != '"' && *p != ';') *d++ = *p++; *d = 0; if (*p == '"') p++; if (*p == ';') p++; HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, data); if (param) cookies.append(param); } // this shouldn't happen - abandon the parse else { return; } } } // +--------------------------------------------------------------------+ Text HttpRequest::GetParam(const char* name) { ListIter iter = query; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) return p->value; } return Text(); } // +--------------------------------------------------------------------+ Text HttpRequest::GetHeader(const char* name) { ListIter iter = headers; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) return p->value; } return Text(); } void HttpRequest::SetHeader(const char* name, const char* value) { ListIter iter = headers; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) { p->value = value; return; } } HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) headers.append(param); } void HttpRequest::AddHeader(const char* name, const char* value) { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) headers.append(param); } // +--------------------------------------------------------------------+ Text HttpRequest::GetCookie(const char* name) { ListIter iter = cookies; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) return p->value; } return Text(); } void HttpRequest::SetCookie(const char* name, const char* value) { ListIter iter = cookies; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) { p->value = value; return; } } HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) cookies.append(param); } void HttpRequest::AddCookie(const char* name, const char* value) { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) cookies.append(param); } // +--------------------------------------------------------------------+ Text HttpRequest::DecodeParam(const char* value) { if (!value || !*value) return ""; int size = strlen(value); char val = 0; char code[4]; char sbuf[256]; char* lbuf = 0; char* dst = sbuf; char* p = sbuf; if (size > 255) { lbuf = new(__FILE__,__LINE__) char[size+1]; dst = lbuf; p = lbuf; } if (p) { while (*value) { switch (*value) { default: *p++ = *value; break; case '+': *p++ = ' '; break; case '%': value++; code[0] = *value++; code[1] = *value; code[2] = 0; val = (char) strtol(code, 0, 16); *p++ = val; break; } value++; } *p = 0; } Text result = dst; if (lbuf) delete [] lbuf; return result; } // +--------------------------------------------------------------------+ Text HttpRequest::EncodeParam(const char* value) { if (!value || !*value) return ""; int size = strlen(value); char hex1 = 0; char hex2 = 0; char sbuf[1024]; char* lbuf = 0; char* dst = sbuf; char* p = sbuf; if (size > 255) { lbuf = new(__FILE__,__LINE__) char[4*size+1]; dst = lbuf; p = lbuf; } if (p) { while (*value) { switch (*value) { default: *p++ = *value; break; case ' ': *p++ = '+'; break; case '?': *p++ = '%'; *p++ = '3'; *p++ = 'F'; break; case '&': *p++ = '%'; *p++ = '2'; *p++ = '6'; break; case ':': *p++ = '%'; *p++ = '3'; *p++ = 'A'; break; case '/': *p++ = '%'; *p++ = '2'; *p++ = 'F'; break; case '\\': *p++ = '%'; *p++ = '5'; *p++ = 'C'; break; case '%': *p++ = '%'; *p++ = '2'; *p++ = '5'; break; case '|': *p++ = '%'; *p++ = '7'; *p++ = 'C'; break; case '<': *p++ = '%'; *p++ = '3'; *p++ = 'C'; break; case '>': *p++ = '%'; *p++ = '3'; *p++ = 'E'; break; case '[': *p++ = '%'; *p++ = '5'; *p++ = 'B'; break; case ']': *p++ = '%'; *p++ = '5'; *p++ = 'D'; break; case '{': *p++ = '%'; *p++ = '7'; *p++ = 'B'; break; case '}': *p++ = '%'; *p++ = '7'; *p++ = 'D'; break; case '"': *p++ = '%'; *p++ = '2'; *p++ = '2'; break; case '^': *p++ = '%'; *p++ = '5'; *p++ = 'E'; break; case '`': *p++ = '%'; *p++ = '6'; *p++ = '0'; break; case '\n': break; case '\r': break; case '\t': break; } value++; } *p = 0; } Text result = dst; if (lbuf) delete [] lbuf; return result; } // +--------------------------------------------------------------------+ HttpRequest::operator Text() { Text response = request_line.data(); response += "\n"; for (int i = 0; i < headers.size(); i++) { HttpParam* h = headers[i]; response += h->name; response += ": "; response += h->value; response += "\n"; } for (i = 0; i < cookies.size(); i++) { HttpParam* c = cookies[i]; response += "Cookie: "; response += c->name; response += "=\""; response += c->value; response += "\"\n"; } response += "Connection: close\n\n"; response += content; return response; } // +--------------------------------------------------------------------+ // +--------------------------------------------------------------------+ // +--------------------------------------------------------------------+ HttpResponse::HttpResponse(int stat, const char* data) : status(stat), content(data) { } HttpResponse::HttpResponse(const char* r) : status(0), content(r) { if (r && *r) ParseResponse(r); } HttpResponse::~HttpResponse() { headers.destroy(); cookies.destroy(); } // +--------------------------------------------------------------------+ HttpResponse::operator Text() { Text response; switch (status) { case SC_CONTINUE : response = "HTTP/1.1 100 Continue\n"; break; case SC_SWITCHING_PROTOCOLS : response = "HTTP/1.1 101 Switching Protocols\n"; break; case SC_OK : response = "HTTP/1.1 200 OK\n"; break; case SC_CREATED : response = "HTTP/1.1 201 Created\n"; break; case SC_ACCEPTED : response = "HTTP/1.1 202 Accepted\n"; break; case SC_NON_AUTHORITATIVE : response = "HTTP/1.1 203 Non Authoritative\n"; break; case SC_NO_CONTENT : response = "HTTP/1.1 204 No Content\n"; break; case SC_RESET_CONTENT : response = "HTTP/1.1 205 Reset Content\n"; break; case SC_PARTIAL_CONTENT : response = "HTTP/1.1 206 Partial Content\n"; break; case SC_MULTIPLE_CHOICES : response = "HTTP/1.1 300 Multiple Choices\n"; break; case SC_MOVED_PERMANENTLY : response = "HTTP/1.1 301 Moved Permanently\n"; break; case SC_FOUND : response = "HTTP/1.1 302 Found\n"; break; case SC_SEE_OTHER : response = "HTTP/1.1 303 See Other\n"; break; case SC_NOT_MODIFIED : response = "HTTP/1.1 304 Not Modified\n"; break; case SC_USE_PROXY : response = "HTTP/1.1 305 Use Proxy\n"; break; case SC_TEMPORARY_REDIRECT : response = "HTTP/1.1 307 Temporary Redirect\n"; break; case SC_BAD_REQUEST : response = "HTTP/1.1 400 Bad Request\n"; break; case SC_UNAUTHORIZED : response = "HTTP/1.1 401 Unauthorized\n"; break; case SC_PAYMENT_REQUIRED : response = "HTTP/1.1 402 Payment Required\n"; break; case SC_FORBIDDEN : response = "HTTP/1.1 403 Forbidden\n"; break; case SC_NOT_FOUND : response = "HTTP/1.1 404 Not Found\n"; break; case SC_METHOD_NOT_ALLOWED : response = "HTTP/1.1 405 Method Not Allowed\n"; break; case SC_NOT_ACCEPTABLE : response = "HTTP/1.1 406 Not Acceptable\n"; break; case SC_PROXY_AUTH_REQ : response = "HTTP/1.1 407 Proxy Authorization Req\n"; break; case SC_REQUEST_TIME_OUT : response = "HTTP/1.1 408 Request Timeout\n"; break; case SC_CONFLICT : response = "HTTP/1.1 409 Conflict\n"; break; case SC_GONE : response = "HTTP/1.1 410 Gone\n"; break; case SC_LENGTH_REQUIRED : response = "HTTP/1.1 411 Length Required\n"; break; default: case SC_SERVER_ERROR : response = "HTTP/1.1 500 Internal Server Error\n"; break; case SC_NOT_IMPLEMENTED : response = "HTTP/1.1 501 Not Implemented\n"; break; case SC_BAD_GATEWAY : response = "HTTP/1.1 502 Bad Gateway\n"; break; case SC_SERVICE_UNAVAILABLE : response = "HTTP/1.1 503 Service Unavailable\n"; break; case SC_GATEWAY_TIMEOUT : response = "HTTP/1.1 504 Gateway Timeout\n"; break; case SC_VERSION_NOT_SUPPORTED: response = "HTTP/1.1 505 HTTP Version Not Supported\n"; break; } SetHeader("Connection", "close"); char buffer[256]; if (content.length()) { sprintf(buffer, "%d", content.length()); SetHeader("Content-Length", buffer); } for (int i = 0; i < cookies.size(); i++) { HttpParam* cookie = cookies.at(i); sprintf(buffer, "%s=\"%s\"; Version=\"1\"", cookie->name.data(), cookie->value.data()); AddHeader("Set-Cookie", buffer); } for (i = 0; i < headers.size(); i++) { const HttpParam* p = headers.at(i); sprintf(buffer, "%s: %s\n", p->name.data(), p->value.data()); response += buffer; } response += "\n"; response += content; return response; } // +--------------------------------------------------------------------+ Text HttpResponse::GetHeader(const char* name) { ListIter iter = headers; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) return p->value; } return Text(); } void HttpResponse::SetHeader(const char* name, const char* value) { ListIter iter = headers; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) { p->value = value; return; } } HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) headers.append(param); } void HttpResponse::AddHeader(const char* name, const char* value) { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) headers.append(param); } // +--------------------------------------------------------------------+ Text HttpResponse::GetCookie(const char* name) { ListIter iter = cookies; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) return p->value; } return Text(); } void HttpResponse::SetCookie(const char* name, const char* value) { ListIter iter = cookies; while (++iter) { HttpParam* p = iter.value(); if (p->name == name) { p->value = value; return; } } HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) cookies.append(param); } void HttpResponse::AddCookie(const char* name, const char* value) { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, value); if (param) cookies.append(param); } // +--------------------------------------------------------------------+ void HttpResponse::SendRedirect(const char* url) { status = SC_TEMPORARY_REDIRECT; SetHeader("Location", url); } // +--------------------------------------------------------------------+ void HttpResponse::ParseResponse(Text response) { if (response.length() <= 12 || response.indexOf("HTTP/1.") != 0) return; const char* pStatus = response.data() + 9; sscanf(pStatus, "%d", &status); if (!status) return; int i = 0; // get the headers: const char* p = response.data(); while (*p && *p != '\n') p++; if (*p == '\n') p++; while (*p && *p != '\r' && *p != '\n') { char name_buf[1024]; char value_buf[1024]; i = 0; while (*p && *p != ':') name_buf[i++] = *p++; name_buf[i] = 0; p++; // skip ':' while (isspace(*p)) p++; // skip spaces i = 0; while (*p && *p != '\r' && *p != '\n') // read to end of header line value_buf[i++] = *p++; value_buf[i] = 0; if (!stricmp(name_buf, "Set-Cookie")) { ParseCookie(value_buf); } else { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name_buf, value_buf); if (param) headers.append(param); } while (*p && *p != '\n') p++; if (*p == '\n') p++; } if (*p == '\n') p++; content = p; } void HttpResponse::ParseCookie(const char* param) { const char* p = param; while (p && *p) { while (isspace(*p)) p++; // just ignore reserved attributes if (*p == '$') { while (*p && !isspace(*p) && *p != ';') p++; if (*p == ';') p++; } // found a cookie! else if (isalpha(*p)) { char name[1024]; char data[1024]; char* d = name; while (*p && *p != '=') *d++ = *p++; *d = 0; if (*p == '=') p++; if (*p == '"') p++; d = data; while (*p && *p != '"' && *p != ';') *d++ = *p++; *d = 0; if (*p == '"') p++; if (*p == ';') p++; // ignore the version attribute if (stricmp(name, "version")) { HttpParam* param = new(__FILE__,__LINE__) HttpParam(name, data); if (param) cookies.append(param); } } // this shouldn't happen - abandon the parse else { return; } } }