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/*
arfnet2-search: Fast file indexer and search
Copyright (C) 2023 arf20 (Ángel Ruiz Fernandez)
This program 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.
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 the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
main.c: Program entry point
*/
#include <sys/types.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <microhttpd.h>
#include "config.h"
#include "index.h"
static char *index_format_template = NULL;
static index_t g_index = NULL;
static const char *result_html_template =
"<div class=\"result\">\n"
"<span class=\"name\">%s</span>""<super class=\"mime\">%s</super><br>\n"
"<a class=\"path\" href=\"%s\">%s</a><div class=\"attrib\"><span class=\"size\">%s</span><span class=\"time\">%s</span></div><br>\n"
"</div>\n";
static const char *
sizestr(size_t size)
{
static char buf[32];
if (size < 1024)
snprintf(buf, 32, "%ld B", size);
else if (size < 1024LL * 1024LL)
snprintf(buf, 32, "%.2f KiB", (float)size/1024.f);
else if (size < 1024LL * 1024LL * 1024LL)
snprintf(buf, 32, "%.2f MiB", (float)size/(1024.f*1024.f));
else if (size < 1024LL * 1024LL * 1024LL * 1024LL)
snprintf(buf, 32, "%.2f GiB", (float)size/(1024.f*1024.f*1024.f));
else if (size < 1024LL * 1024LL * 1024LL * 1024LL * 1024LL)
snprintf(buf, 32, "%.2f TiB", (float)size/(1024.f*1024.f*1024.f*1024.f));
return buf;
}
static const char *
generate_results_html(results_t *results)
{
static char buff[65535], timebuf[256], urlbuf[4096];
char *pos = buff;
for (int i = 0; i < results->size; i++) {
const node_data_t *data = results->results[i];
struct tm *tm_mtim = gmtime(&data->stat.st_mtim.tv_sec);
strftime(timebuf, 256, "%Y-%m-%d %H:%M:%S", tm_mtim);
snprintf(urlbuf, 4096, "%s%s", subdir, data->path);
pos += snprintf(pos, 65535 - (pos - buff),
result_html_template,
data->name,
data->mime ? data->mime : "",
urlbuf, data->path,
sizestr(data->stat.st_size), timebuf
);
}
return buff;
}
enum MHD_Result answer_to_connection(
void *cls, struct MHD_Connection *connection,
const char *url,
const char *method,
const char *version,
const char *upload_data,
size_t *upload_data_size,
void **ptr
) {
char buff[BUFF_SIZE];
const struct sockaddr_in **coninfo =
(const struct sockaddr_in**)MHD_get_connection_info(
connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS);
time_t time_now = time(NULL);
struct tm *tm_now = gmtime(&time_now);
static char timestr[256];
strftime(timestr, 256, "%Y-%m-%d %H:%M:%S", tm_now);
printf("[%s] [webserver] %s %s %s: ",
timestr, inet_ntoa((*coninfo)->sin_addr), method, url);
struct MHD_Response *response;
int ret;
if (strcmp(method, "GET") == 0 && strcmp(url, "/") == 0) {
snprintf(buff, BUFF_SIZE, index_format_template, "", "");
response = MHD_create_response_from_buffer(strlen(buff), (void*)buff,
MHD_RESPMEM_PERSISTENT);
printf("%d\n", 200);
ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
}
else if (strcmp(method, "GET") == 0 && strcmp(url, "/query") == 0) {
const char *query = MHD_lookup_connection_value(connection,
MHD_GET_ARGUMENT_KIND, "query");
results_t *results = NULL;
if (g_index)
results = index_lookup(g_index, LOOKUP_SUBSTR, query);
if (results)
snprintf(buff, BUFF_SIZE, index_format_template, query,
generate_results_html(results));
else
snprintf(buff, BUFF_SIZE, index_format_template, query,
"indexing in progress... try again later");
response = MHD_create_response_from_buffer(strlen(buff), (void*)buff,
MHD_RESPMEM_PERSISTENT);
if (results)
results_destroy(results);
printf("%d\n", 200);
ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
}
else {
response = MHD_create_response_from_buffer(0, (void*)NULL, 0);
printf("%d\n", 418);
ret = MHD_queue_response(connection, 418, response);
MHD_destroy_response(response);
}
return ret;
}
int main() {
printf("ARFNET search (C) 2025 licence GPLv3\n");
if (config_load(CONFIG_PATH) < 0)
return 1;
/* read index template file */
FILE *tf = fopen(tmpl_path, "r");
if (!tf) {
fprintf(stderr, "error opening index template file: %s\n",
strerror(errno));
return 1;
}
fseek(tf, 0, SEEK_END);
size_t tfs = ftell(tf);
rewind(tf);
index_format_template = malloc(tfs + 1);
fread(index_format_template, 1, tfs, tf);
fclose(tf);
index_format_template[tfs] = '\0';
/* start server */
struct MHD_Daemon *daemon;
daemon = MHD_start_daemon(
MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_EPOLL,
port, NULL, NULL,
&answer_to_connection, NULL, MHD_OPTION_END);
if (!daemon) {
fprintf(stderr, "error starting libmicrohttpd daemon\n");
return 1;
}
/* begin indexing */
if (index_init() < 0)
return 1;
time_t time_now = time(NULL);
struct tm *tm_now = gmtime(&time_now);
static char timestr[256];
strftime(timestr, 256, "%Y-%m-%d %H:%M:%S", tm_now);
printf("[%s] [index] indexeding started...\n", timestr);
g_index = index_new(INIT_MAP_CAPACITY, root, 1);
time_now = time(NULL);
tm_now = gmtime(&time_now);
strftime(timestr, 256, "%Y-%m-%d %H:%M:%S", tm_now);
printf("[%s] [index] indexed finished\n", timestr);
while (1) {
sleep(1000);
}
}
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