//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) {
EspFsFile *file=connData->cgiData;
int len;
char buff[1024];
if (connData->conn==NULL) {
//Connection aborted. Clean up.
espFsClose(file);
return HTTPD_CGI_DONE;
}
if (file==NULL) {
//First call to this cgi. Open the file so we can read it.
file=espFsOpen(connData->url);
if (file==NULL) {
return HTTPD_CGI_NOTFOUND;
}
connData->cgiData=file;
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
httpdEndHeaders(connData);
return HTTPD_CGI_MORE;
}
len=espFsRead(file, buff, 1024);
if (len>0) espconn_sent(connData->conn, (uint8 *)buff, len);
if (len!=1024) {
//We're done.
espFsClose(file);
return HTTPD_CGI_DONE;
} else {
//Ok, till next time.
return HTTPD_CGI_MORE;
}
}
void doWork(void *ignore) {
char buff[5*1024];
ESP_LOGD(tag, "Flash address is 0x%x", (int)flashAddress);
if (espFsInit(flashAddress, 64*1024) != ESPFS_INIT_RESULT_OK) {
ESP_LOGD(tag, "Failed to initialize espfs");
return;
}
EspFsFile *fh = espFsOpen("files/test3.txt");;
if (fh != NULL) {
int sizeRead = 0;
sizeRead = espFsRead(fh, buff, sizeof(buff));
ESP_LOGD(tag, "Result: %.*s", sizeRead, buff);
size_t fileSize;
char *data;
sizeRead = espFsAccess(fh, (void **)&data, &fileSize);
ESP_LOGD(tag, "Result from access: %.*s", fileSize, data);
espFsClose(fh);
vTaskDelete(NULL);
}
}
/*
* Load a file using the ESPFS file system. The file to be loaded is specified
* by the "path" parameter. If the file can be loaded, then the full data
* of the file is returned and the "fileSize" size pointer is updated.
* If the file can't be loaded, NULL is returned.
*
* If data is returned, it does NOT need to be cleaned up because the nature of
* the ESPFS file system is that the data is found in flash and addressable. As
* such there is no RAM cost for getting the data of such a file.
*
* Prior to calling this function, the espFsInit() function should have been
* previously called to initialize the ESPFS environment.
*/
char *esp32_loadFileESPFS(char *path, size_t *fileSize) {
EspFsFile *fh = espFsOpen((char *)path);
if (fh == NULL) {
*fileSize = 0;
LOGD("ESPFS: Failed to open file %s", path);
return NULL;
}
char *data;
espFsAccess(fh, (void **)&data, fileSize);
espFsClose(fh);
// Note ... because data is mapped in memory from flash ... it will be good
// past the file close.
LOGD("esp32_loadFileESPFS: Read file %s for size %d", path, *fileSize);
return data;
} // esp32_loadFileESPFS
//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) {
EspFsFile *file=connData->cgiData;
int len;
char buff[1024];
#ifdef GZIP_COMPRESSION
const char *gzipSendResult = NULL;
#endif
if (connData->conn==NULL) {
//Connection aborted. Clean up.
espFsClose(file);
return HTTPD_CGI_DONE;
}
if (file==NULL) {
//First call to this cgi. Open the file so we can read it.
file=espFsOpen(connData->url);
if (file==NULL) {
return HTTPD_CGI_NOTFOUND;
}
connData->cgiData=file;
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
#ifdef GZIP_COMPRESSION
gzipSendResult = sendGZIPEncodingIfNeeded(connData);
if (gzipSendResult != NULL) {
httpdEndHeaders(connData);
httpdSend(connData, gzipSendResult, os_strlen(gzipSendResult));
return HTTPD_CGI_DONE;
}
#endif
httpdHeader(connData, "Cache-Control", "max-age=3600, must-revalidate");
httpdEndHeaders(connData);
return HTTPD_CGI_MORE;
}
len=espFsRead(file, buff, 1024);
if (len>0) espconn_sent(connData->conn, (uint8 *)buff, len);
if (len!=1024) {
//We're done.
espFsClose(file);
return HTTPD_CGI_DONE;
} else {
//Ok, till next time.
return HTTPD_CGI_MORE;
}
}
int main(int argc, char **argv) {
int f, out;
int len;
char buff[128];
EspFsFile *ef;
off_t size;
if (argc!=3) {
printf("Usage: %s espfs-image file\nExpands file from the espfs-image archive.\n", argv[0]);
exit(0);
}
f=open(argv[1], O_RDONLY);
if (f<=0) {
perror(argv[1]);
exit(1);
}
size=lseek(f, 0, SEEK_END);
espFsData=mmap(NULL, size, PROT_READ, MAP_SHARED, f, 0);
if (espFsData==MAP_FAILED) {
perror("mmap");
exit(1);
}
ef=espFsOpen(argv[2]);
if (ef==NULL) {
printf("Couldn't find %s in image.\n", argv[2]);
exit(1);
}
out=open(argv[2], O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (out<=0) {
perror(argv[2]);
exit(1);
}
while ((len=espFsRead(ef, buff, 128))!=0) {
write(out, buff, len);
}
espFsClose(ef);
//munmap, close, ... I can't be bothered.
}
//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) {
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;
}
if (file==NULL) {
//First call to this cgi. Open the file so we can read it.
file=espFsOpen(connData->url);
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 (os_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(connData->url));
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) espconn_sent(connData->conn, (uint8 *)buff, len);
if (len!=1024) {
//We're done.
espFsClose(file);
return HTTPD_CGI_DONE;
} else {
//Ok, till next time.
return HTTPD_CGI_MORE;
}
}
int ICACHE_FLASH_ATTR cgiEspFsTemplate(HttpdConnData *connData) {
TplData *tpd=connData->cgiData;
int len;
int x, sp=0;
char *e=NULL;
char buff[1025];
if (connData->conn==NULL) {
//Connection aborted. Clean up.
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
espFsClose(tpd->file);
os_free(tpd);
return HTTPD_CGI_DONE;
}
if (tpd==NULL) {
//First call to this cgi. Open the file so we can read it.
tpd=(TplData *)os_malloc(sizeof(TplData));
tpd->file=espFsOpen(connData->url);
tpd->tplArg=NULL;
tpd->tokenPos=-1;
if (tpd->file==NULL) {
espFsClose(tpd->file);
os_free(tpd);
return HTTPD_CGI_NOTFOUND;
}
if (espFsFlags(tpd->file) & FLAG_GZIP) {
debug("cgiEspFsTemplate: Trying to use gzip-compressed file %s as template!\n", connData->url);
espFsClose(tpd->file);
os_free(tpd);
return HTTPD_CGI_NOTFOUND;
}
connData->cgiData=tpd;
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
httpdEndHeaders(connData);
return HTTPD_CGI_MORE;
}
len=espFsRead(tpd->file, buff, 1024);
if (len>0) {
sp=0;
e=buff;
for (x=0; 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 {
//This is an actual token.
tpd->token[tpd->tokenPos++]=0; //zero-terminate token
((TplCallback)(connData->cgiArg))(connData, tpd->token, &tpd->tplArg);
}
//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];
}
}
}
}
//Send remaining bit.
if (sp!=0) httpdSend(connData, e, sp);
if (len!=1024) {
//We're done.
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
espFsClose(tpd->file);
os_free(tpd);
return HTTPD_CGI_DONE;
} else {
//Ok, till next time.
return HTTPD_CGI_MORE;
}
}
int ICACHE_FLASH_ATTR cgiEspFsTemplate(HttpdConnData *connData) {
TplData *tpd=connData->cgiData;
int len;
int x, sp=0;
char *e=NULL;
char buff[1025];
if (connData->conn==NULL) {
//Connection aborted. Clean up.
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
espFsClose(tpd->file);
os_free(tpd);
return HTTPD_CGI_DONE;
}
if (tpd==NULL) {
//First call to this cgi. Open the file so we can read it.
tpd=(TplData *)os_malloc(sizeof(TplData));
tpd->file=espFsOpen(connData->url);
tpd->tplArg=NULL;
tpd->tokenPos=-1;
if (tpd->file==NULL) {
return HTTPD_CGI_NOTFOUND;
}
connData->cgiData=tpd;
httpdStartResponse(connData, 200);
httpdHeader(connData, "Content-Type", httpdGetMimetype(connData->url));
httpdEndHeaders(connData);
return HTTPD_CGI_MORE;
}
len=espFsRead(tpd->file, buff, 1024);
if (len>0) {
sp=0;
e=buff;
for (x=0; x<len; x++) {
if (tpd->tokenPos==-1) {
//Inside ordinary text.
if (buff[x]=='%') {
//Send raw data up to now
if (sp!=0) espconn_sent(connData->conn, (uint8 *)e, sp);
sp=0;
//Go collect token chars.
tpd->tokenPos=0;
} else {
sp++;
}
} else {
if (buff[x]=='%') {
tpd->token[tpd->tokenPos++]=0; //zero-terminate token
((TplCallback)(connData->cgiArg))(connData, tpd->token, &tpd->tplArg);
//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];
}
}
}
}
//Send remaining bit.
if (sp!=0) espconn_sent(connData->conn, (uint8 *)e, sp);
if (len!=1024) {
//We're done.
((TplCallback)(connData->cgiArg))(connData, NULL, &tpd->tplArg);
espFsClose(tpd->file);
return HTTPD_CGI_DONE;
} else {
//Ok, till next time.
return HTTPD_CGI_MORE;
}
}
//cgiEspFsHtml is a simple HTML file that gets prefixed by head.tpl
int ICACHE_FLASH_ATTR cgiEspFsHtml(HttpdConnData *connData) {
EspFsFile *file = connData->cgiData;
char buff[2048];
if (connData->conn==NULL) {
// Connection aborted. Clean up.
if (file != NULL) espFsClose(file);
return HTTPD_CGI_DONE;
}
// The first time around we send the head template in one go and we open the file
if (file == NULL) {
int status = 200;
// open file, return error on failure
file = espFsOpen("/head.tpl");
if (file == NULL) {
os_strcpy(buff, "Header file 'head.tpl' not found\n");
os_printf(buff);
status = 500;
goto error;
}
// read file and return it
int len = espFsRead(file, buff, sizeof(buff));
espFsClose(file);
if (len == sizeof(buff)) {
os_sprintf(buff, "Header file 'head.tpl' too large (%d>%d)!\n", len, sizeof(buff));
os_printf(buff);
status = 500;
goto error;
}
// before returning, open the real file for next time around
file = espFsOpen(connData->url);
if (file == NULL) {
os_strcpy(buff, connData->url);
os_strcat(buff, " not found\n");
os_printf(buff);
status = 404;
goto error;
}
connData->cgiData = file;
httpdStartResponse(connData, status);
httpdHeader(connData, "Content-Type", "text/html; charset=UTF-8");
httpdEndHeaders(connData);
httpdSend(connData, buff, len);
printGlobalJSON(connData);
return HTTPD_CGI_MORE;
error: // error response
httpdStartResponse(connData, status);
httpdHeader(connData, "Content-Type", "text/html; charset=UTF-8");
httpdEndHeaders(connData);
httpdSend(connData, buff, -1);
return HTTPD_CGI_DONE;
}
// The second time around send actual file
int len = espFsRead(file, buff, sizeof(buff));
httpdSend(connData, buff, len);
if (len == sizeof(buff)) {
return HTTPD_CGI_MORE;
} else {
connData->cgiData = NULL;
espFsClose(file);
return HTTPD_CGI_DONE;
}
}