/
webserver.c
1071 lines (971 loc) · 30.2 KB
/
webserver.c
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/*
Copyright (C) 2013 CurlyMo
This file is part of pilight.
pilight is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later
version.
pilight is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with pilight. If not, see <http://www.gnu.org/licenses/>
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <getopt.h>
#include <string.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <assert.h>
#include <syslog.h>
#include <signal.h>
#include <stdarg.h>
#define __USE_GNU
#include <pthread.h>
#include "../../pilight.h"
#include "common.h"
#include "mongoose.h"
#include "config.h"
#include "gc.h"
#include "log.h"
#include "threads.h"
#include "json.h"
#include "socket.h"
#include "webserver.h"
#include "settings.h"
#include "ssdp.h"
#include "fcache.h"
int webserver_port = WEBSERVER_PORT;
int webserver_cache = 1;
int webserver_authentication = 0;
char *webserver_username = NULL;
char *webserver_password = NULL;
unsigned short webserver_loop = 1;
unsigned short webserver_php = 1;
char *webserver_root = NULL;
char *webgui_tpl = NULL;
unsigned char alphabet[64] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
struct mg_server *mgserver[WEBSERVER_WORKERS];
int sockfd = 0;
char *sockReadBuff = NULL;
unsigned char *sockWriteBuff = NULL;
char *server = NULL;
typedef enum {
WELCOME,
IDENTIFY,
REJECT,
SYNC
} steps_t;
typedef struct webqueue_t {
char *message;
struct webqueue_t *next;
} webqueue_t;
struct webqueue_t *webqueue;
struct webqueue_t *webqueue_head;
#ifndef __FreeBSD__
pthread_mutex_t webqueue_lock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
pthread_cond_t webqueue_signal = PTHREAD_COND_INITIALIZER;
#else
pthread_mutex_t webqueue_lock;
pthread_cond_t webqueue_signal;
#endif
int webqueue_number = 0;
int webserver_gc(void) {
int i = 0;
webserver_loop = 0;
socket_close(sockfd);
sfree((void *)&sockWriteBuff);
sfree((void *)&sockReadBuff);
if(webserver_root) {
sfree((void *)&webserver_root);
}
if(webgui_tpl) {
sfree((void *)&webgui_tpl);
}
for(i=0;i<WEBSERVER_WORKERS;i++) {
mg_destroy_server(&mgserver[i]);
}
fcache_gc();
logprintf(LOG_DEBUG, "garbage collected webserver library");
return 1;
}
struct filehandler_t {
unsigned char *bytes;
FILE *fp;
unsigned int ptr;
unsigned int length;
unsigned short free;
} filehandler_t;
int webserver_which(const char *program) {
char path[1024];
strcpy(path, getenv("PATH"));
char *pch = strtok(path, ":");
while(pch) {
char exec[strlen(pch)+8];
strcpy(exec, pch);
strcat(exec, "/");
strcat(exec, program);
if(access(exec, X_OK) != -1) {
return 0;
}
pch = strtok(NULL, ":");
}
return -1;
}
int webserver_ishex(int x) {
return(x >= '0' && x <= '9') || (x >= 'a' && x <= 'f') || (x >= 'A' && x <= 'F');
}
const char *rstrstr(const char* haystack, const char* needle) {
char* loc = 0;
char* found = 0;
size_t pos = 0;
while ((found = strstr(haystack + pos, needle)) != 0) {
loc = found;
pos = (size_t)((found - haystack) + 1);
}
return loc;
}
int webserver_urldecode(const char *s, char *dec) {
char *o;
const char *end = s + strlen(s);
int c;
for(o = dec; s <= end; o++) {
c = *s++;
if(c == '+') {
c = ' ';
} else if(c == '%' && (!webserver_ishex(*s++) || !webserver_ishex(*s++) || !sscanf(s - 2, "%2x", &c))) {
return -1;
}
if(dec) {
sprintf(o, "%c", c);
}
}
return (int)(o - dec);
}
void webserver_alpha_random(char *s, const int len) {
static const char alphanum[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";
int i = 0;
for(i = 0; i < len; ++i) {
s[i] = alphanum[(unsigned int)rand() % (sizeof(alphanum) - 1)];
}
s[len] = 0;
}
int base64decode(unsigned char *dest, unsigned char *src, int l) {
static char inalphabet[256], decoder[256];
int i, bits, c, char_count;
int rpos;
int wpos = 0;
for(i=(sizeof alphabet)-1;i>=0;i--) {
inalphabet[alphabet[i]] = 1;
decoder[alphabet[i]] = (char)i;
}
char_count = 0;
bits = 0;
for(rpos=0;rpos<l;rpos++) {
c = src[rpos];
if(c == '=') {
break;
}
if(c > 255 || !inalphabet[c]) {
continue;
}
bits += decoder[c];
char_count++;
if(char_count < 4) {
bits <<= 6;
} else {
dest[wpos++] = (unsigned char)(bits >> 16);
dest[wpos++] = (unsigned char)((bits >> 8) & 0xff);
dest[wpos++] = (unsigned char)(bits & 0xff);
bits = 0;
char_count = 0;
}
}
switch(char_count) {
case 1:
return -1;
break;
case 2:
dest[wpos++] = (unsigned char)(bits >> 10);
break;
case 3:
dest[wpos++] = (unsigned char)(bits >> 16);
dest[wpos++] = (unsigned char)((bits >> 8) & 0xff);
break;
default:
break;
}
return wpos;
}
void webserver_create_header(unsigned char **p, const char *message, char *mimetype, unsigned int len) {
*p += sprintf((char *)*p,
"HTTP/1.0 %s\r\n"
"Server: pilight\r\n"
"Content-Type: %s\r\n",
message, mimetype);
*p += sprintf((char *)*p,
"Content-Length: %u\r\n\r\n",
len);
}
void webserver_create_minimal_header(unsigned char **p, const char *message, unsigned int len) {
*p += sprintf((char *)*p,
"HTTP/1.1 %s\r\n"
"Server: zfsguru\r\n",
message);
*p += sprintf((char *)*p,
"Content-Length: %u\r\n\r\n",
len);
}
void webserver_create_404(const char *in, unsigned char **p) {
char mimetype[] = "text/html";
webserver_create_header(p, "404 Not Found", mimetype, (unsigned int)(202+strlen((const char *)in)));
*p += sprintf((char *)*p, "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\x0d\x0a"
"<html><head>\x0d\x0a"
"<title>404 Not Found</title>\x0d\x0a"
"</head><body>\x0d\x0a"
"<h1>Not Found</h1>\x0d\x0a"
"<p>The requested URL %s was not found on this server.</p>\x0d\x0a"
"</body></html>",
(const char *)in);
}
char *webserver_mimetype(const char *str) {
char *mimetype = malloc(strlen(str)+1);
if(!mimetype) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memset(mimetype, '\0', strlen(str)+1);
strcpy(mimetype, str);
return mimetype;
}
char *webserver_shell(const char *format_str, struct mg_connection *conn, char *request, ...) {
size_t n = 0;
char *output = NULL;
const char *type = NULL;
const char *cookie = NULL;
va_list ap;
va_start(ap, request);
n = (size_t)vsnprintf(NULL, 0, format_str, ap) + strlen(format_str) + 1; // EOL + dual NL
va_end(ap);
char *command[n];
va_start(ap, request);
vsprintf((char *)command, format_str, ap);
va_end(ap);
setenv("SCRIPT_FILENAME", request, 1);
setenv("REDIRECT_STATUS", "200", 1);
setenv("SERVER_PROTOCOL", "HTTP/1.1", 1);
setenv("REMOTE_HOST", "127.0.0.1", 1);
char sn[1024] = {'\0'};
if(conn->remote_port != 80) {
sprintf(sn, "http://%s:%d", conn->remote_ip, conn->remote_port);
} else {
sprintf(sn, "http://%s", conn->remote_ip);
}
setenv("SERVER_NAME", sn, 1);
setenv("HTTPS", "off", 1);
setenv("HTTP_ACCEPT", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", 1);
if(strcmp(conn->request_method, "POST") == 0) {
setenv("REQUEST_METHOD", "POST", 1);
if((type = mg_get_header(conn, "Content-Type")) != NULL) {
setenv("CONTENT_TYPE", type, 1);
}
char len[10];
sprintf(len, "%d", (int)conn->content_len);
setenv("CONTENT_LENGTH", len, 1);
}
if((cookie = mg_get_header(conn, "Cookie")) != NULL) {
setenv("HTTP_COOKIE", cookie, 1);
}
if(conn->query_string != NULL) {
setenv("QUERY_STRING", conn->query_string, 1);
}
if(strcmp(conn->request_method, "GET") == 0) {
setenv("REQUEST_METHOD", "GET", 1);
}
FILE *fp = NULL;
if((fp = popen((char *)command, "r")) != NULL) {
size_t total = 0;
size_t chunk = 0;
unsigned char buff[1024] = {'\0'};
while(!feof(fp)) {
chunk = fread(buff, sizeof(char), 1024, fp);
total += chunk;
output = realloc(output, total+1);
if(!output) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memcpy(&output[total-chunk], buff, chunk);
}
output[total] = '\0';
unsetenv("SCRIPT_FILENAME");
unsetenv("REDIRECT_STATUS");
unsetenv("SERVER_PROTOCOL");
unsetenv("REMOTE_HOST");
unsetenv("SERVER_NAME");
unsetenv("HTTPS");
unsetenv("HTTP_ACCEPT");
unsetenv("HTTP_COOKIE");
unsetenv("REQUEST_METHOD");
unsetenv("CONTENT_TYPE");
unsetenv("CONTENT_LENGTH");
unsetenv("QUERY_STRING");
unsetenv("REQUEST_METHOD");
pclose(fp);
return output;
}
return NULL;
}
static int webserver_sockets_callback(struct mg_connection *c) {
if(c->is_websocket) {
mg_websocket_write(c, 1, (char *)c->callback_param, strlen((char *)c->callback_param));
}
return MG_REQUEST_PROCESSED;
}
static int webserver_auth_handler(struct mg_connection *conn) {
if(webserver_authentication == 1 && webserver_username != NULL && webserver_password != NULL) {
return mg_authorize_input(conn, webserver_username, webserver_password, mg_get_option(mgserver[0], "auth_domain"));
} else {
return MG_AUTH_OK;
}
}
static int webserver_request_handler(struct mg_connection *conn) {
char *request = NULL;
char *ext = NULL;
char *mimetype = NULL;
int size = 0;
unsigned char *p;
static unsigned char buffer[4096];
struct filehandler_t *filehandler = (struct filehandler_t *)conn->connection_param;
unsigned int chunk = WEBSERVER_CHUNK_SIZE;
struct stat st;
if(!conn->is_websocket) {
if(filehandler != NULL) {
char buff[WEBSERVER_CHUNK_SIZE];
if((filehandler->length-filehandler->ptr) < chunk) {
chunk = (unsigned int)(filehandler->length-filehandler->ptr);
}
if(filehandler->fp != NULL) {
chunk = (unsigned int)fread(buff, sizeof(char), WEBSERVER_CHUNK_SIZE, filehandler->fp);
mg_send_data(conn, buff, (int)chunk);
} else {
mg_send_data(conn, &filehandler->bytes[filehandler->ptr], (int)chunk);
}
filehandler->ptr += chunk;
if(filehandler->ptr == filehandler->length || conn->wsbits != 0) {
if(filehandler->fp != NULL) {
fclose(filehandler->fp);
filehandler->fp = NULL;
}
if(filehandler->free) {
sfree((void *)&filehandler->bytes);
}
sfree((void *)&filehandler);
conn->connection_param = NULL;
return MG_REQUEST_PROCESSED;
} else {
return MG_REQUEST_CALL_AGAIN;
}
}
if(strcmp(conn->uri, "/send") == 0) {
if(conn->query_string != NULL) {
char out[strlen(conn->query_string)];
webserver_urldecode(conn->query_string, out);
socket_write(sockfd, out);
mg_printf_data(conn, "{\"message\":\"success\"}");
}
return MG_REQUEST_PROCESSED;
} else if(strcmp(conn->uri, "/config") == 0) {
JsonNode *jsend = config_broadcast_create();
char *output = json_stringify(jsend, NULL);
mg_printf_data(conn, output);
json_delete(jsend);
jsend = NULL;
return MG_REQUEST_PROCESSED;
} else if(strcmp(&conn->uri[(rstrstr(conn->uri, "/")-conn->uri)], "/") == 0) {
char indexes[255];
strcpy(indexes, mg_get_option(mgserver[0], "index_files"));
char *pch = strtok((char *)indexes, ",");
/* Check if the webserver_root is terminated by a slash. If not, than add it */
while(pch) {
request = realloc(request, strlen(webserver_root)+strlen(webgui_tpl)+strlen(pch)+4);
if(!request) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memset(request, '\0', strlen(webserver_root)+strlen(pch)+3);
if(webserver_root[strlen(webserver_root)-1] == '/') {
#ifdef __FreeBSD__
sprintf(request, "%s%s/%s%s", webserver_root, webgui_tpl, conn->uri, pch);
#else
sprintf(request, "%s%s%s%s", webserver_root, webgui_tpl, conn->uri, pch);
#endif
} else {
sprintf(request, "%s/%s/%s%s", webserver_root, webgui_tpl, conn->uri, pch);
}
if(access(request, F_OK) == 0) {
break;
}
pch = strtok(NULL, ",");
}
} else {
size_t wlen = strlen(webserver_root)+strlen(webgui_tpl)+strlen(conn->uri)+2;
request = malloc(wlen);
if(!request) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memset(request, '\0', wlen);
/* If a file was requested add it to the webserver path to create the absolute path */
if(webserver_root[strlen(webserver_root)-1] == '/') {
if(conn->uri[0] == '/')
sprintf(request, "%s%s%s", webserver_root, webgui_tpl, conn->uri);
else
sprintf(request, "%s%s/%s", webserver_root, webgui_tpl, conn->uri);
} else {
if(conn->uri[0] == '/')
sprintf(request, "%s/%s%s", webserver_root, webgui_tpl, conn->uri);
else
sprintf(request, "%s/%s/%s", webserver_root, webgui_tpl, conn->uri);
}
}
char *dot = NULL;
/* Retrieve the extension of the requested file and create a mimetype accordingly */
dot = strrchr(request, '.');
if(!dot || dot == request) {
mimetype = webserver_mimetype("text/plain");
} else {
ext = realloc(ext, strlen(dot)+1);
if(!ext) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memset(ext, '\0', strlen(dot)+1);
strcpy(ext, dot+1);
if(strcmp(ext, "html") == 0) {
mimetype = webserver_mimetype("text/html");
} else if(strcmp(ext, "xml") == 0) {
mimetype = webserver_mimetype("text/xml");
} else if(strcmp(ext, "png") == 0) {
mimetype = webserver_mimetype("image/png");
} else if(strcmp(ext, "gif") == 0) {
mimetype = webserver_mimetype("image/gif");
} else if(strcmp(ext, "ico") == 0) {
mimetype = webserver_mimetype("image/x-icon");
} else if(strcmp(ext, "jpg") == 0) {
mimetype = webserver_mimetype("image/jpg");
} else if(strcmp(ext, "css") == 0) {
mimetype = webserver_mimetype("text/css");
} else if(strcmp(ext, "js") == 0) {
mimetype = webserver_mimetype("text/javascript");
} else if(strcmp(ext, "php") == 0) {
mimetype = webserver_mimetype("application/x-httpd-php");
} else {
mimetype = webserver_mimetype("text/plain");
}
}
sfree((void *)&ext);
memset(buffer, '\0', 4096);
p = buffer;
if(access(request, F_OK) == 0) {
stat(request, &st);
if(webserver_cache && st.st_size <= MAX_CACHE_FILESIZE &&
strcmp(mimetype, "application/x-httpd-php") != 0 &&
fcache_get_size(request, &size) != 0 && fcache_add(request) != 0) {
goto filenotfound;
}
} else {
goto filenotfound;
}
const char *cl = NULL;
if((cl = mg_get_header(conn, "Content-Length"))) {
if(atoi(cl) > MAX_UPLOAD_FILESIZE) {
sfree((void *)&mimetype);
char line[1024] = {'\0'};
mimetype = webserver_mimetype("text/plain");
sprintf(line, "Webserver Warning: POST Content-Length of %d bytes exceeds the limit of %d bytes in Unknown on line 0", MAX_UPLOAD_FILESIZE, atoi(cl));
webserver_create_header(&p, "200 OK", mimetype, (unsigned int)strlen(line));
mg_write(conn, buffer, (int)(p-buffer));
mg_write(conn, line, (int)strlen(line));
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
}
}
/* If webserver caching is enabled, first load all files in the memory */
if(strcmp(mimetype, "application/x-httpd-php") == 0 && webserver_php) {
char *raw = NULL;
if(strcmp(conn->request_method, "POST") == 0) {
/* Store all (binary) post data in a file so we
can feed it directly into php-cgi */
char file[20];
strcpy(file, "/tmp/php");
char name[11];
webserver_alpha_random(name, 10);
strcat(file, name);
int f = open(file, O_TRUNC | O_WRONLY | O_CREAT);
write(f, conn->content, conn->content_len);
close(f);
raw = webserver_shell("cat %s | php-cgi %s 2>&1 | base64", conn, request, file, request);
unlink(file);
} else {
raw = webserver_shell("php-cgi %s 2>&1 | base64", conn, request, request);
}
if(raw != NULL) {
char *output = malloc(strlen(raw)+1);
memset(output, '\0', strlen(raw)+1);
if(!output) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
memset(output, '\0', strlen(raw)+1);
size_t olen = (size_t)base64decode((unsigned char *)output, (unsigned char *)raw, (int)strlen(raw));
sfree((void *)&raw);
char *ptr = strstr(output, "\n\r");
char *xptr = strstr(output, "X-Powered-By:");
char *sptr = strstr(output, "Status:");
char *nptr = NULL;
if(sptr) {
nptr = sptr;
} else {
nptr = xptr;
}
if(ptr != NULL && nptr != NULL) {
size_t pos = (size_t)(ptr-output);
size_t xpos = (size_t)(nptr-output);
char *header = malloc((pos-xpos)+(size_t)1);
if(!header) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
/* Extract header info from PHP output */
strncpy(&header[0], &output[xpos], pos-xpos);
header[(pos-xpos)] = '\0';
/* Extract content info from PHP output */
memmove(&output[xpos], &output[pos+3], olen-(pos+2));
olen-=((pos+2)-xpos);
/* Retrieve the PHP content type */
char ite[pos-xpos];
strcpy(ite, header);
char *pch = strtok(ite, "\n\r");
char type[255];
while(pch) {
if(sscanf(pch, "Content-type:%*[ ]%s%*[ \n\r]", type)) {
break;
}
if(sscanf(pch, "Content-Type:%*[ ]%s%*[ \n\r]", type)) {
break;
}
pch = strtok(NULL, "\n\r");
}
if(strstr(header, "Status: 302 Moved Temporarily") != NULL) {
webserver_create_minimal_header(&p, "302 Moved Temporarily", (unsigned int)olen);
} else {
webserver_create_minimal_header(&p, "200 OK", (unsigned int)olen);
}
/* Merge HTML header with PHP header */
char *hptr = strstr((char *)buffer, "\n\r");
size_t hlen = (size_t)(hptr-(char *)buffer);
pos = strlen(header);
memcpy((char *)&buffer[hlen], header, pos);
memcpy((char *)&buffer[hlen+pos], "\n\r\n\r", 4);
if(strlen(type) > 0 && strstr(type, "text") != NULL) {
mg_write(conn, buffer, (int)strlen((char *)buffer));
mg_write(conn, output, (int)olen);
sfree((void *)&output);
} else {
if(filehandler == NULL) {
filehandler = malloc(sizeof(filehandler_t));
filehandler->bytes = malloc(olen);
memcpy(filehandler->bytes, output, olen);
filehandler->length = (unsigned int)olen;
filehandler->ptr = 0;
filehandler->free = 1;
filehandler->fp = NULL;
conn->connection_param = filehandler;
}
sfree((void *)&output);
chunk = WEBSERVER_CHUNK_SIZE;
if(filehandler != NULL) {
if((filehandler->length-filehandler->ptr) < chunk) {
chunk = (filehandler->length-filehandler->ptr);
}
mg_send_data(conn, &filehandler->bytes[filehandler->ptr], (int)chunk);
filehandler->ptr += chunk;
sfree((void *)&mimetype);
sfree((void *)&request);
sfree((void *)&header);
if(filehandler->ptr == filehandler->length || conn->wsbits != 0) {
sfree((void *)&filehandler->bytes);
sfree((void *)&filehandler);
conn->connection_param = NULL;
return MG_REQUEST_PROCESSED;
} else {
return MG_REQUEST_CALL_AGAIN;
}
}
}
sfree((void *)&header);
}
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
} else {
logprintf(LOG_NOTICE, "(webserver) invalid php-cgi output from %s", request);
webserver_create_404(conn->uri, &p);
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
}
} else {
stat(request, &st);
if(!webserver_cache || st.st_size > MAX_CACHE_FILESIZE) {
FILE *fp = fopen(request, "rb");
fseek(fp, 0, SEEK_END);
size = (int)ftell(fp);
fseek(fp, 0, SEEK_SET);
if(strstr(mimetype, "text") != NULL) {
webserver_create_header(&p, "200 OK", mimetype, (unsigned int)size);
mg_write(conn, buffer, (int)(p-buffer));
size_t total = 0;
chunk = 0;
unsigned char buff[1024];
while(total < size) {
chunk = (unsigned int)fread(buff, sizeof(char), 1024, fp);
mg_write(conn, buff, (int)chunk);
total += chunk;
}
fclose(fp);
} else {
if(filehandler == NULL) {
filehandler = malloc(sizeof(filehandler_t));
filehandler->bytes = NULL;
filehandler->length = (unsigned int)size;
filehandler->ptr = 0;
filehandler->free = 0;
filehandler->fp = fp;
conn->connection_param = filehandler;
}
char buff[WEBSERVER_CHUNK_SIZE];
if(filehandler != NULL) {
if((filehandler->length-filehandler->ptr) < chunk) {
chunk = (filehandler->length-filehandler->ptr);
}
chunk = (unsigned int)fread(buff, sizeof(char), WEBSERVER_CHUNK_SIZE, fp);
mg_send_data(conn, buff, (int)chunk);
filehandler->ptr += chunk;
sfree((void *)&mimetype);
sfree((void *)&request);
if(filehandler->ptr == filehandler->length || conn->wsbits != 0) {
if(filehandler->fp != NULL) {
fclose(filehandler->fp);
filehandler->fp = NULL;
}
sfree((void *)&filehandler);
conn->connection_param = NULL;
return MG_REQUEST_PROCESSED;
} else {
return MG_REQUEST_CALL_AGAIN;
}
}
}
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
} else {
if(fcache_get_size(request, &size) == 0) {
if(strstr(mimetype, "text") != NULL) {
webserver_create_header(&p, "200 OK", mimetype, (unsigned int)size);
mg_write(conn, buffer, (int)(p-buffer));
mg_write(conn, fcache_get_bytes(request), size);
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
} else {
if(filehandler == NULL) {
filehandler = malloc(sizeof(filehandler_t));
filehandler->bytes = fcache_get_bytes(request);
filehandler->length = (unsigned int)size;
filehandler->ptr = 0;
filehandler->free = 0;
filehandler->fp = NULL;
conn->connection_param = filehandler;
}
chunk = WEBSERVER_CHUNK_SIZE;
if(filehandler != NULL) {
if((filehandler->length-filehandler->ptr) < chunk) {
chunk = (filehandler->length-filehandler->ptr);
}
mg_send_data(conn, &filehandler->bytes[filehandler->ptr], (int)chunk);
filehandler->ptr += chunk;
sfree((void *)&mimetype);
sfree((void *)&request);
if(filehandler->ptr == filehandler->length || conn->wsbits != 0) {
sfree((void *)&filehandler);
conn->connection_param = NULL;
return MG_REQUEST_PROCESSED;
} else {
return MG_REQUEST_CALL_AGAIN;
}
}
}
}
}
sfree((void *)&mimetype);
sfree((void *)&request);
}
} else {
char input[conn->content_len+1];
strncpy(input, conn->content, conn->content_len);
input[conn->content_len] = '\0';
if(json_validate(input) == true) {
JsonNode *json = json_decode(input);
char *message = NULL;
if(json_find_string(json, "message", &message) != -1) {
if(strcmp(message, "request config") == 0) {
JsonNode *jsend = config_broadcast_create();
char *output = json_stringify(jsend, NULL);
size_t output_len = strlen(output);
mg_websocket_write(conn, 1, output, output_len);
sfree((void *)&output);
json_delete(jsend);
} else if(strcmp(message, "send") == 0) {
/* Write all codes coming from the webserver to the daemon */
socket_write(sockfd, input);
}
}
json_delete(json);
}
return MG_CLIENT_CONTINUE;
}
return MG_REQUEST_PROCESSED;
filenotfound:
logprintf(LOG_NOTICE, "(webserver) could not read %s", request);
webserver_create_404(conn->uri, &p);
mg_write(conn, buffer, (int)(p-buffer));
sfree((void *)&mimetype);
sfree((void *)&request);
return MG_REQUEST_PROCESSED;
}
int webserver_open_handler(struct mg_connection *conn) {
char ip[17];
strcpy(ip, conn->remote_ip);
if(socket_check_whitelist(conn->remote_ip) != 0) {
logprintf(LOG_INFO, "rejected client, ip: %s, port: %d", ip, conn->remote_port);
return -1;
} else {
logprintf(LOG_INFO, "client connected, ip %s, port %d", ip, conn->remote_port);
return 0;
}
return 1;
}
void *webserver_serve(void *srv) {
for(;;) {
mg_poll_server((struct mg_server *)srv, 1000);
}
return NULL;
}
void webserver_queue(char *message) {
pthread_mutex_lock(&webqueue_lock);
struct webqueue_t *wnode = malloc(sizeof(struct webqueue_t));
if(!wnode) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
wnode->message = malloc(strlen(message)+1);
if(!wnode->message) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
strcpy(wnode->message, message);
if(webqueue_number == 0) {
webqueue = wnode;
webqueue_head = wnode;
} else {
webqueue_head->next = wnode;
webqueue_head = wnode;
}
webqueue_number++;
pthread_mutex_unlock(&webqueue_lock);
pthread_cond_signal(&webqueue_signal);
}
void *webserver_clientize(void *param) {
steps_t steps = WELCOME;
char *message = NULL;
struct ssdp_list_t *ssdp_list = NULL;
int standalone = 0;
// settings_find_number("standalone", &standalone);
if(ssdp_seek(&ssdp_list) == -1 || standalone == 1) {
logprintf(LOG_DEBUG, "no pilight ssdp connections found");
server = malloc(10);
if(!server) {
logprintf(LOG_ERR, "out of memory");
exit(EXIT_FAILURE);
}
strcpy(server, "127.0.0.1");
if((sockfd = socket_connect(server, (unsigned short)socket_get_port())) == -1) {
logprintf(LOG_DEBUG, "could not connect to pilight-daemon");
sfree((void *)&server);
exit(EXIT_FAILURE);
}
sfree((void *)&server);
} else {
if((sockfd = socket_connect(ssdp_list->ip, ssdp_list->port)) == -1) {
logprintf(LOG_DEBUG, "could not connect to pilight-daemon");
exit(EXIT_FAILURE);
}
sfree((void *)&ssdp_list);
}
sfree((void *)&server);
while(webserver_loop) {
if(steps > WELCOME) {
/* Clear the receive buffer again and read the welcome message */
/* Used direct read access instead of socket_read */
if((sockReadBuff = socket_read(sockfd)) == NULL) {
goto close;
}
}
switch(steps) {
case WELCOME:
socket_write(sockfd, "{\"message\":\"client gui\"}");
steps=IDENTIFY;
break;
case IDENTIFY: {
JsonNode *json = json_decode(sockReadBuff);
json_find_string(json, "message", &message);
if(strcmp(message, "accept client") == 0) {
steps=SYNC;
}
if(strcmp(message, "reject client") == 0) {
steps=REJECT;
}
json_delete(json);
sfree((void *)&sockReadBuff);
sockReadBuff = NULL;
}
break;
case SYNC:
if(strlen(sockReadBuff) > 0) {
webserver_queue(sockReadBuff);
sfree((void *)&sockReadBuff);
sockReadBuff = NULL;
}
break;
case REJECT:
default:
goto close;
break;
}
}
if(sockReadBuff) {
sfree((void *)&sockReadBuff);
sockReadBuff = NULL;
}
close:
webserver_gc();
return 0;
}
void *webserver_broadcast(void *param) {
int i = 0;
pthread_mutex_lock(&webqueue_lock);
while(webserver_loop) {
#ifdef __FreeBSD__
pthread_mutex_lock(&webqueue_lock);
#endif
if(webqueue_number > 0) {
pthread_mutex_lock(&webqueue_lock);
for(i=0;i<WEBSERVER_WORKERS;i++) {
mg_iterate_over_connections(mgserver[i], webserver_sockets_callback, webqueue->message);
}
struct webqueue_t *tmp = webqueue;
sfree((void *)&webqueue->message);
webqueue = webqueue->next;
sfree((void *)&tmp);
webqueue_number--;
pthread_mutex_unlock(&webqueue_lock);
} else {
pthread_cond_wait(&webqueue_signal, &webqueue_lock);
}
}
return (void *)NULL;
}
void *webserver_start(void *param) {
if(webserver_which("php-cgi") != 0) {
webserver_php = 0;
logprintf(LOG_ERR, "php support disabled due to missing php-cgi executable");
}
if(webserver_which("cat") != 0) {
webserver_php = 0;
logprintf(LOG_ERR, "php support disabled due to missing cat executable");
}
if(webserver_which("base64") != 0) {
webserver_php = 0;