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fileserver.c
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fileserver.c
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/**
Onion HTTP server library
Copyright (C) 2010-2018 David Moreno Montero and others
This library is free software; you can redistribute it and/or
modify it under the terms of, at your choice:
a. the Apache License Version 2.0.
b. the GNU General Public License as published by the
Free Software Foundation; either version 2.0 of the License,
or (at your option) any later version.
This program 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 both licenses, if not see
<http://www.gnu.org/licenses/> and
<http://www.apache.org/licenses/LICENSE-2.0>.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <onion/onion.h>
#include <onion/request.h>
#include <onion/response.h>
#include <onion/handler.h>
#include <onion/log.h>
#include <onion/shortcuts.h>
#include <onion/handlers/exportlocal.h>
#include <onion/handlers/path.h>
#include <onion/handlers/static.h>
#include <onion/handlers/auth_pam.h>
onion *o = NULL;
void free_onion(int unused) {
ONION_INFO("Closing connections");
onion_free(o);
exit(0);
}
typedef struct {
const char *abspath;
} upload_file_data;
onion_connection_status upload_file(upload_file_data * data,
onion_request * req, onion_response * res) {
if (onion_request_get_flags(req) & OR_POST) {
const char *name = onion_request_get_post(req, "file");
const char *filename = onion_request_get_file(req, "file");
if (name && filename) {
char finalname[1024];
snprintf(finalname, sizeof(finalname), "%s/%s", data->abspath, name);
ONION_DEBUG("Copying from %s to %s", filename, finalname);
onion_shortcut_rename(filename, finalname);
}
}
return 0; // I just ignore the request, but process over the FILE data
}
/// Footer that allows to upload files.
void upload_file_footer(onion_response * res, const char *dirname) {
onion_response_write0(res,
"<p><table><tr><th>Upload a file: <form method=\"POST\" enctype=\"multipart/form-data\">"
"<input type=\"file\" name=\"file\"><input type=\"submit\"><form></th></tr></table>");
onion_response_write0(res,
"<h2>Onion minimal fileserver. (C) 2010 <a href=\"http://www.coralbits.com\">CoralBits</a>. "
"Under <a href=\"http://www.gnu.org/licenses/agpl-3.0.html\">AGPL 3.0.</a> License.</h2>\n");
}
int show_help() {
printf("Onion basic fileserver. (C) 2010 Coralbits S.L.\n\n"
"Usage: fileserver [options] [directory to serve]\n\n"
"Options:\n"
" --pem pemfile Uses that certificate and key file. Both must be on the same file. Default is at current dir cert.pem.\n"
" --pam pamname Uses that pam name to allow access. Default login.\n"
" --port N\n"
" -p N Listens at given port. Default 8080\n"
" --listen ADDRESS\n"
" -l ADDRESS Listen to that address. It can be a IPv4 or IPv6 IP, or a local host name. Default: 0.0.0.0\n"
" --help\n"
" -h Shows this help\n"
"\n"
"fileserver serves an HTML with easy access to current files, and allows to upload new files.\n"
"It have SSL encrypting and PAM authentication.\n" "\n");
return 0;
}
int main(int argc, char **argv) {
char *port = "8080";
char *hostname = "::";
const char *dirname = ".";
const char *certfile = "cert.pem";
const char *pamname = "login";
int i;
for (i = 1; i < argc; i++) {
if ((strcmp(argv[i], "--port") == 0) || (strcmp(argv[i], "-p") == 0)) {
port = argv[++i];
ONION_INFO("Listening at port %s", port);
}
if ((strcmp(argv[i], "--listen") == 0) || (strcmp(argv[i], "-l") == 0)) {
hostname = argv[++i];
ONION_INFO("Listening at hostname %s", hostname);
} else if (strcmp(argv[i], "--pem") == 0) {
if (argc < i + 1)
return show_help();
certfile = argv[++i];
ONION_INFO("Certificate file set to %s", certfile);
} else if (strcmp(argv[i], "--pam") == 0) {
if (argc < i + 1)
return show_help();
pamname = argv[++i];
ONION_INFO("Pam name is now %s", pamname);
} else if (strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0) {
return show_help();
} else
dirname = argv[i];
}
upload_file_data data = {
dirname
};
onion_handler *root =
onion_handler_new((void *)upload_file, (void *)&data, NULL);
onion_handler *dir =
onion_handler_export_local_new(argc == 2 ? argv[1] : ".");
onion_handler_export_local_set_footer(dir, upload_file_footer);
onion_handler_add(dir,
onion_handler_static("<h1>404 - File not found.</h1>",
404));
onion_handler_add(root, dir);
onion_handler *pam =
onion_handler_auth_pam("Onion Fileserver", pamname, root);
o = onion_new(O_THREADED);
onion_set_root_handler(o, pam);
onion_set_certificate(o, O_SSL_CERTIFICATE_KEY, certfile, certfile);
onion_set_port(o, port);
onion_set_hostname(o, hostname);
signal(SIGINT, free_onion);
int error = onion_listen(o);
if (error) {
perror("Cant create the server");
}
onion_free(o);
return 0;
}