GainSpan Wi-Fi library see: http://mbed.org/users/gsfan/notebook/gainspan_wifi/
Dependents: GSwifi_httpd GSwifi_websocket GSwifi_tcpclient GSwifi_tcpserver ... more
Fork of GSwifi by
GainSpan Wi-Fi library
The GS1011 is an ultra low power 802.11b wireless module from GainSpan.
see: http://mbed.org/users/gsfan/notebook/gainspan_wifi/
ゲインスパン Wi-Fi モジュール ライブラリ
ゲインスパン社の低電力 Wi-Fiモジュール(無線LAN) GS1011 シリーズ用のライブラリです。
解説: http://mbed.org/users/gsfan/notebook/gainspan_wifi/
GSwifi_httpd.cpp
- Committer:
- gsfan
- Date:
- 2012-11-08
- Revision:
- 20:151b5a4fdd29
- Parent:
- 19:cad912f5a6ba
- Child:
- 22:9b077e2823ce
File content as of revision 20:151b5a4fdd29:
#include "dbg.h" #include "mbed.h" #include "GSwifi.h" #ifdef GS_USE_HTTPD #define HTTPD_REQUEST 0 #define HTTPD_HEAD 1 #define HTTPD_SPACE 2 #define HTTPD_BODY 3 #define HTTPD_ERROR 4 #define MIMETABLE_NUM 7 struct { char ext[6]; char type[20]; } mimetable[MIMETABLE_NUM] = { {".txt", "text/plain"}, {".html", "text/html"}, {".htm", "text/html"}, {".css", "text/css"}, {".jpg", "image/jpeg"}, {".png", "image/png"}, {".gif", "image/gif"}, }; int GSwifi::httpd (int port) { int i; char cmd[GS_CMD_SIZE]; if (! _connect || _status != GSSTAT_READY) return -1; for (i = 0; i < 16; i ++) { _httpd[i].mode = HTTPD_REQUEST; _httpd[i].buf = NULL; _httpd[i].uri = NULL; } _handler_count = 0; sprintf(cmd, "AT+NSTCP=%d", port); if (command(cmd, GSRES_CONNECT)) return -1; newSock(_cid, GSTYPE_SERVER, GSPROT_HTTPD, NULL); /* // newSock(_cid, GSTYPE_SERVER, GSPROT_HTTPD, &GSwifi::poll_httpd); // newSock(_cid, GSTYPE_SERVER, GSPROT_HTTPD, reinterpret_cast<onGsReceiveFunc>(&GSwifi::poll_httpd)); void (GSwifi::*f1)(int,int) = &GSwifi::poll_httpd; onGsReceiveFunc f2 = reinterpret_cast<onGsReceiveFunc>(f1); newSock(_cid, GSTYPE_SERVER, GSPROT_HTTPD, f2); */ return _cid; } void GSwifi::poll_httpd (int cid, int len) { int i, j, flg = 0; char c; if (len == 0) { _httpd[cid].mode = HTTPD_REQUEST; _httpd[cid].len = 0; _httpd[cid].keepalive = 0; return; } while (_gs_sock[cid].connect && _gs_sock[cid].data->use()) { flg = 0; if (_httpd[cid].buf == NULL) { _httpd[cid].buf = new char[HTTPD_BUF_SIZE]; } for (j = 0; j < len; j ++) { _gs_sock[cid].data->get(&c); if (c == '\r') continue; if (c == '\n' && _httpd[cid].mode != HTTPD_BODY) break; if (_httpd[cid].len < HTTPD_BUF_SIZE - 1) { _httpd[cid].buf[_httpd[cid].len] = c; } _httpd[cid].len ++; if (_httpd[cid].len >= _httpd[cid].length && _httpd[cid].mode == HTTPD_BODY) break; } if (j >= len) return; if (_httpd[cid].len < HTTPD_BUF_SIZE) { _httpd[cid].buf[_httpd[cid].len] = 0; DBG("httpd %d: %d %s (%d)\r\n", cid, _httpd[cid].mode, _httpd[cid].buf, _httpd[cid].len); } switch (_httpd[cid].mode) { case HTTPD_REQUEST: if (strncmp(_httpd[cid].buf, "GET ", 4) == 0) { _httpd[cid].type = GSPROT_HTTPGET; j = 4; } else if (strncmp(_httpd[cid].buf, "POST ", 5) == 0) { _httpd[cid].type = GSPROT_HTTPPOST; j = 5; } else { _httpd[cid].mode = HTTPD_ERROR; break; } for (i = j; i < _httpd[cid].len; i ++) { if (_httpd[cid].buf[i] == ' ') break; } i = i - j; if (i) { if (_httpd[cid].uri == NULL) { _httpd[cid].uri = new char[HTTPD_URI_SIZE]; } strncpy(_httpd[cid].uri, &_httpd[cid].buf[j], i); _httpd[cid].uri[i] = 0; } _httpd[cid].mode = HTTPD_HEAD; _httpd[cid].length = 0; DBG("uri: %s\r\n", _httpd[cid].uri); break; case HTTPD_HEAD: if (_httpd[cid].len == 0) { _httpd[cid].mode = HTTPD_BODY; if (_httpd[cid].length == 0) flg = 1; // no body } else if (strncmp(_httpd[cid].buf, "Content-Length: ", 16) == 0) { _httpd[cid].length = atoi(&_httpd[cid].buf[16]); } else if (strncmp(_httpd[cid].buf, "Connection: Keep-Alive", 22) == 0) { if (! _httpd[cid].keepalive) { _httpd[cid].keepalive = HTTPD_KEEPALIVE; } } break; case HTTPD_BODY: if (_httpd[cid].len >= _httpd[cid].length) { DBG("body: %s\r\n", _httpd[cid].buf); flg = 1; } break; } if (flg) { // http request _httpd[cid].buf[_httpd[cid].len] = 0; // scan handler flg = 0; for (i = 0; i < _handler_count; i ++) { j = strlen(_handler[i].uri); if (strncmp(_httpd[cid].uri, _handler[i].uri, j) == NULL) { // found _httpd[cid].host = _gs_sock[cid].host; _httpd[cid].file = &_httpd[cid].uri[j]; _httpd[cid].query = NULL; for (; j < strlen(_httpd[cid].uri); j ++) { if (_httpd[cid].uri[j] == '?') { // query string _httpd[cid].uri[j] = 0; _httpd[cid].query = &_httpd[cid].uri[j + 1]; break; } } if (_handler[i].dir) { // file httpd_request(cid, &_httpd[cid], _handler[i].dir); flg = 1; } else if (_handler[i].onHttpCgi) { // cgi _handler[i].onHttpCgi(cid, &_httpd[cid]); _httpd[cid].keepalive = 0; LOG("%d.%d.%d.%d ", _httpd[cid].host.getIp()[0], _httpd[cid].host.getIp()[1], _httpd[cid].host.getIp()[2], _httpd[cid].host.getIp()[3]); LOG("%s %s %d 200 -\r\n", _httpd[cid].type == GSPROT_HTTPGET ? "GET" : "POST", _httpd[cid].uri, _httpd[cid].length); flg = 1; } break; } } if (! flg) { // not found send_httpd_error(cid, 403); } if (_httpd[cid].keepalive) { _httpd[cid].mode = HTTPD_REQUEST; _httpd[cid].len = 0; _httpd[cid].length = 0; _httpd[cid].keepalive --; } else { close(cid); } } if (_httpd[cid].mode == HTTPD_ERROR) { send_httpd_error(cid, 400); } _httpd[cid].len = 0; } } int GSwifi::httpd_request (int cid, GS_httpd *gshttpd, char *dir) { FILE *fp; int i, len; char buf[HTTPD_BUF_SIZE]; char file[HTTPD_URI_SIZE]; strcpy(file, dir); strcat(file, gshttpd->file); if (file[strlen(file) - 1] == '/') { strcat(file, "index.htm"); } DBG("file: %s\r\n", file); fp = fopen(file, "r"); if (fp) { send(cid, "HTTP/1.1 200 OK\r\n", 17); { // file size i = ftell(fp); fseek(fp, 0, SEEK_END); len = ftell(fp); fseek(fp, i, SEEK_SET); } sprintf(buf, "Content-Length: %d\r\n", len); send(cid, buf, strlen(buf)); sprintf(buf, "Content-Type: %s\r\n", mimetype(file)); send(cid, buf, strlen(buf)); if (gshttpd->keepalive) { strcpy(buf, "Connection: Keep-Alive\r\n"); } else { strcpy(buf, "Connection: close\r\n"); } send(cid, buf, strlen(buf)); strcpy(buf, "Server: GSwifi httpd\r\n"); send(cid, buf, strlen(buf)); send(cid, "\r\n", 2); for (;;) { i = fread(buf, sizeof(char), sizeof(buf), fp); if (i <= 0) break; send(cid, buf, i); #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) if (feof(fp)) break; #endif } fclose(fp); LOG("%d.%d.%d.%d ", _httpd[cid].host.getIp()[0], _httpd[cid].host.getIp()[1], _httpd[cid].host.getIp()[2], _httpd[cid].host.getIp()[3]); LOG("%s %s %d 200 %d\r\n", _httpd[cid].type == GSPROT_HTTPGET ? "GET" : "POST", _httpd[cid].uri, _httpd[cid].length, len); return 0; } send_httpd_error(cid, 404); return -1; } char *GSwifi::mimetype (char *file) { int i, j; DBG("<%s>\r\n", file); for (i = 0; i < MIMETABLE_NUM; i ++) { j = strlen(mimetable[i].ext); if (strncmp(&file[strlen(file) - j], mimetable[i].ext, j) == NULL) { return mimetable[i].type; } } return mimetable[0].type; } void GSwifi::send_httpd_error (int cid, int err) { char buf[100], msg[30]; switch (err) { case 400: strcpy(msg, "Bad Request"); break; case 403: strcpy(msg, "Forbidden"); break; case 404: strcpy(msg, "Not Found"); break; case 500: default: strcpy(msg, "Internal Server Error"); break; } DBG("httpd error: %d %d %s\r\n", cid, err, msg); sprintf(buf, "HTTP/1.1 %d %s\r\n", err, msg); send(cid, buf, strlen(buf)); strcpy(buf, "Content-Type: text/html\r\n"); send(cid, buf, strlen(buf)); send(cid, "\r\n", 2); sprintf(buf, "<html><head><title>%d %s</title></head>\r\n", err, msg); send(cid, buf, strlen(buf)); sprintf(buf, "<body><h1>%s</h1></body></html>\r\n", msg); send(cid, buf, strlen(buf)); close(cid); LOG("%d.%d.%d.%d ", _httpd[cid].host.getIp()[0], _httpd[cid].host.getIp()[1], _httpd[cid].host.getIp()[2], _httpd[cid].host.getIp()[3]); LOG("%s %s %d %d -\r\n", _httpd[cid].type == GSPROT_HTTPGET ? "GET" : "POST", _httpd[cid].uri, _httpd[cid].length, err); } int GSwifi::attach_httpd (const char *uri, const char *dir) { if (_handler_count < HTTPD_HANDLE) { _handler[_handler_count].uri = new char[strlen(uri) + 1]; strcpy(_handler[_handler_count].uri, uri); _handler[_handler_count].dir = new char[strlen(dir) + 1]; strcpy(_handler[_handler_count].dir, dir); _handler[_handler_count].onHttpCgi = NULL; _handler_count ++; return 0; } else { return -1; } } int GSwifi::attach_httpd (const char *uri, onHttpdCgiFunc ponHttpCgi) { if (_handler_count < HTTPD_HANDLE) { _handler[_handler_count].uri = new char[strlen(uri) + 1]; strcpy(_handler[_handler_count].uri, uri); _handler[_handler_count].dir = NULL; _handler[_handler_count].onHttpCgi = ponHttpCgi; _handler_count ++; return 0; } else { return -1; } } #endif