You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
334 lines
8.4 KiB
334 lines
8.4 KiB
/*
|
|
Connector to let httpd use the espfs filesystem to serve the files in it.
|
|
*/
|
|
|
|
/*
|
|
* ----------------------------------------------------------------------------
|
|
* "THE BEER-WARE LICENSE" (Revision 42):
|
|
* Jeroen Domburg <jeroen@spritesmods.com> wrote this file. As long as you retain
|
|
* this notice you can do whatever you want with this stuff. If we meet some day,
|
|
* and you think this stuff is worth it, you can buy me a beer in return.
|
|
* ----------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include <esp8266.h>
|
|
#include "httpdespfs.h"
|
|
#include "espfs.h"
|
|
#include "espfsformat.h"
|
|
|
|
// The static files marked with FLAG_GZIP are compressed and will be served with GZIP compression.
|
|
// If the client does not advertise that he accepts GZIP send following warning message (telnet users for e.g.)
|
|
static const char *gzipNonSupportedMessage = "HTTP/1.0 501 Not implemented\r\n"
|
|
"Server: esp8266-httpd/"HTTPDVER"\r\n"
|
|
"Connection: close\r\n"
|
|
"Content-Type: text/plain\r\n"
|
|
"Content-Length: 52\r\n"
|
|
"\r\n"
|
|
"Your browser does not accept gzip-compressed data.\r\n";
|
|
|
|
|
|
|
|
static EspFsFile *tryOpenIndex_do(const char *path, const char *indexname)
|
|
{
|
|
// Try appending index.tpl
|
|
char fname[100];
|
|
|
|
size_t url_len = strlen(path);
|
|
strcpy(fname, path); // add current path
|
|
|
|
// add slash if not already ending with slash
|
|
if (path[url_len - 1] != '/') {
|
|
fname[url_len++] = '/';
|
|
}
|
|
|
|
// add index
|
|
strcpy(fname + url_len, indexname);
|
|
|
|
return espFsOpen(fname);
|
|
}
|
|
|
|
|
|
EspFsFile *tryOpenIndex(const char *path)
|
|
{
|
|
EspFsFile * file;
|
|
|
|
// if there is a dot in the file, assume it's an extension
|
|
// no point in trying to find index in this case, abort.
|
|
if (strchr(path, '.') != NULL) return NULL;
|
|
|
|
|
|
// try index.html
|
|
file = tryOpenIndex_do(path, "index.html");
|
|
if (file != NULL) return file;
|
|
|
|
// try index.htm
|
|
file = tryOpenIndex_do(path, "index.htm");
|
|
if (file != NULL) return file;
|
|
|
|
// try index.tpl
|
|
file = tryOpenIndex_do(path, "index.tpl");
|
|
if (file != NULL) return file;
|
|
|
|
return NULL; // failed to guess the right name
|
|
}
|
|
|
|
|
|
int ICACHE_FLASH_ATTR serveStaticFile(HttpdConnData *connData, const char* filepath)
|
|
{
|
|
EspFsFile *file = connData->cgiData;
|
|
int len;
|
|
char buff[1024];
|
|
char acceptEncodingBuffer[64];
|
|
int isGzip;
|
|
|
|
if (connData->conn == NULL) {
|
|
//Connection aborted. Clean up.
|
|
espFsClose(file);
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
|
|
// invalid call.
|
|
if (filepath == NULL) {
|
|
printf("serveStaticFile called with NULL path!\n");
|
|
return HTTPD_CGI_NOTFOUND;
|
|
}
|
|
|
|
if (file == NULL) {
|
|
//First call to this cgi. Open the file so we can read it.
|
|
file = espFsOpen(filepath);
|
|
if (file == NULL) {
|
|
// file not found
|
|
|
|
// If this is a folder, look for index file
|
|
file = tryOpenIndex(filepath);
|
|
if (file == NULL) return HTTPD_CGI_NOTFOUND;
|
|
}
|
|
|
|
// The gzip checking code is intentionally without #ifdefs because checking
|
|
// for FLAG_GZIP (which indicates gzip compressed file) is very easy, doesn't
|
|
// mean additional overhead and is actually safer to be on at all times.
|
|
// If there are no gzipped files in the image, the code bellow will not cause any harm.
|
|
|
|
// Check if requested file was GZIP compressed
|
|
isGzip = espFsFlags(file) & FLAG_GZIP;
|
|
if (isGzip) {
|
|
// Check the browser's "Accept-Encoding" header. If the client does not
|
|
// advertise that he accepts GZIP send a warning message (telnet users for e.g.)
|
|
httpdGetHeader(connData, "Accept-Encoding", acceptEncodingBuffer, 64);
|
|
if (strstr(acceptEncodingBuffer, "gzip") == NULL) {
|
|
//No Accept-Encoding: gzip header present
|
|
httpdSend(connData, gzipNonSupportedMessage, -1);
|
|
espFsClose(file);
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
}
|
|
|
|
connData->cgiData = file;
|
|
httpdStartResponse(connData, 200);
|
|
httpdHeader(connData, "Content-Type", httpdGetMimetype(filepath));
|
|
if (isGzip) {
|
|
httpdHeader(connData, "Content-Encoding", "gzip");
|
|
}
|
|
httpdHeader(connData, "Cache-Control", "max-age=3600, must-revalidate");
|
|
httpdEndHeaders(connData);
|
|
return HTTPD_CGI_MORE;
|
|
}
|
|
|
|
len = espFsRead(file, buff, 1024);
|
|
if (len > 0) httpdSend(connData, buff, len);
|
|
if (len != 1024) {
|
|
//We're done.
|
|
espFsClose(file);
|
|
return HTTPD_CGI_DONE;
|
|
} else {
|
|
//Ok, till next time.
|
|
return HTTPD_CGI_MORE;
|
|
}
|
|
}
|
|
|
|
|
|
|
|
//This is a catch-all cgi function. It takes the url passed to it, looks up the corresponding
|
|
//path in the filesystem and if it exists, passes the file through. This simulates what a normal
|
|
//webserver would do with static files.
|
|
int ICACHE_FLASH_ATTR cgiEspFsHook(HttpdConnData *connData)
|
|
{
|
|
return serveStaticFile(connData, connData->url);
|
|
}
|
|
|
|
|
|
int ICACHE_FLASH_ATTR cgiEspFsFile(HttpdConnData *connData)
|
|
{
|
|
return serveStaticFile(connData, connData->cgiArg);
|
|
}
|
|
|
|
//cgiEspFsTemplate can be used as a template.
|
|
|
|
#define TEMPLATE_CHUNK 1024
|
|
|
|
typedef struct {
|
|
EspFsFile *file;
|
|
void *tplArg;
|
|
char token[64];
|
|
int tokenPos;
|
|
|
|
char buff[TEMPLATE_CHUNK + 1];
|
|
|
|
bool chunk_resume;
|
|
int buff_len;
|
|
int buff_x;
|
|
int buff_sp;
|
|
char *buff_e;
|
|
} TplData;
|
|
|
|
typedef int (* TplCallback)(HttpdConnData *connData, char *token, void **arg);
|
|
|
|
int ICACHE_FLASH_ATTR cgiEspFsTemplate(HttpdConnData *connData)
|
|
{
|
|
TplData *tpd = connData->cgiData;
|
|
int len;
|
|
int x, sp = 0;
|
|
char *e = NULL;
|
|
|
|
if (connData->conn == NULL) {
|
|
//Connection aborted. Clean up.
|
|
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
|
|
espFsClose(tpd->file);
|
|
free(tpd);
|
|
return HTTPD_CGI_DONE;
|
|
}
|
|
|
|
if (tpd == NULL) {
|
|
//First call to this cgi. Open the file so we can read it.
|
|
tpd = (TplData *)malloc(sizeof(TplData));
|
|
|
|
tpd->chunk_resume = false;
|
|
|
|
|
|
const char *filepath = connData->url;
|
|
|
|
// check for custom template URL
|
|
if (connData->cgiArg2 != NULL) {
|
|
filepath = connData->cgiArg2;
|
|
printf("Using filepath %s\n", filepath);
|
|
}
|
|
|
|
tpd->file = espFsOpen(filepath);
|
|
if (tpd->file == NULL) {
|
|
// If this is a folder, look for index file
|
|
tpd->file = tryOpenIndex(filepath);
|
|
if (tpd->file == NULL) {
|
|
free(tpd);
|
|
return HTTPD_CGI_NOTFOUND;
|
|
}
|
|
}
|
|
|
|
tpd->tplArg = NULL;
|
|
tpd->tokenPos = -1;
|
|
if (espFsFlags(tpd->file) & FLAG_GZIP) {
|
|
httpd_printf("cgiEspFsTemplate: Trying to use gzip-compressed file %s as template!\n", connData->url);
|
|
espFsClose(tpd->file);
|
|
free(tpd);
|
|
return HTTPD_CGI_NOTFOUND;
|
|
}
|
|
connData->cgiData = tpd;
|
|
httpdStartResponse(connData, 200);
|
|
httpdHeader(connData, "Content-Type", httpdGetMimetype(filepath));
|
|
httpdEndHeaders(connData);
|
|
return HTTPD_CGI_MORE;
|
|
}
|
|
|
|
char *buff = tpd->buff;
|
|
|
|
|
|
// resume the parser state from the last token,
|
|
// if subst. func wants more data to be sent.
|
|
if (tpd->chunk_resume) {
|
|
// resume
|
|
len = tpd->buff_len;
|
|
e = tpd->buff_e;
|
|
sp = tpd->buff_sp;
|
|
x = tpd->buff_x;
|
|
} else {
|
|
len = espFsRead(tpd->file, buff, TEMPLATE_CHUNK);
|
|
tpd->buff_len = len;
|
|
|
|
e = buff;
|
|
sp = 0;
|
|
x = 0;
|
|
}
|
|
|
|
if (len > 0) {
|
|
for (; x < len; x++) {
|
|
if (tpd->tokenPos == -1) {
|
|
//Inside ordinary text.
|
|
if (buff[x] == '%') {
|
|
//Send raw data up to now
|
|
if (sp != 0) httpdSend(connData, e, sp);
|
|
sp = 0;
|
|
//Go collect token chars.
|
|
tpd->tokenPos = 0;
|
|
} else {
|
|
sp++;
|
|
}
|
|
} else {
|
|
if (buff[x] == '%') {
|
|
if (tpd->tokenPos == 0) {
|
|
//This is the second % of a %% escape string.
|
|
//Send a single % and resume with the normal program flow.
|
|
httpdSend(connData, "%", 1);
|
|
} else {
|
|
|
|
if (!tpd->chunk_resume) {
|
|
//This is an actual token.
|
|
tpd->token[tpd->tokenPos++] = 0; //zero-terminate token
|
|
}
|
|
|
|
tpd->chunk_resume = false;
|
|
|
|
int status = ((TplCallback)(connData->cgiArg))(connData, tpd->token, &tpd->tplArg);
|
|
|
|
if (status == HTTPD_CGI_MORE) {
|
|
// wants to send more in this token's place.....
|
|
tpd->chunk_resume = true;
|
|
|
|
tpd->buff_len = len;
|
|
tpd->buff_e = e;
|
|
tpd->buff_sp = sp;
|
|
tpd->buff_x = x;
|
|
|
|
break;
|
|
}
|
|
}
|
|
//Go collect normal chars again.
|
|
e = &buff[x + 1];
|
|
tpd->tokenPos = -1;
|
|
} else {
|
|
if (tpd->tokenPos < (sizeof(tpd->token) - 1)) tpd->token[tpd->tokenPos++] = buff[x];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tpd->chunk_resume) {
|
|
return HTTPD_CGI_MORE;
|
|
}
|
|
|
|
//Send remaining bit.
|
|
if (sp != 0) httpdSend(connData, e, sp);
|
|
if (len != TEMPLATE_CHUNK) {
|
|
|
|
//We're done.
|
|
|
|
// let the cgi func clean it's stuff
|
|
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
|
|
|
|
espFsClose(tpd->file);
|
|
free(tpd);
|
|
return HTTPD_CGI_DONE;
|
|
} else {
|
|
//Ok, till next time.
|
|
return HTTPD_CGI_MORE;
|
|
}
|
|
}
|
|
|
|
|