2 Copyright (C) 2010-2011 jeanfi@gmail.com
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #define _(str) gettext(str)
30 #include <sys/types.h>
31 #include <sys/select.h>
32 #include <sys/socket.h>
37 #include <microhttpd.h>
43 #include "psensor_json.h"
45 #include "plib/plib_io.h"
48 static const char *program_name;
50 #define DEFAULT_PORT 3131
52 #define PAGE_NOT_FOUND (_("<html><body><p>\
53 Page not found - Go to <a href='/'>Main page</a>\
56 static struct option long_options[] = {
57 {"version", no_argument, 0, 'v'},
58 {"help", no_argument, 0, 'h'},
59 {"port", required_argument, 0, 'p'},
60 {"wdir", required_argument, 0, 'w'},
61 {"debug", no_argument, 0, 'd'},
65 static struct server_data server_data;
67 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
71 static int server_stop_requested;
75 printf("psensor-server %s\n", VERSION);
76 printf(_("Copyright (C) %s jeanfi@gmail.com\n\
77 License GPLv2: GNU GPL version 2 or later \
78 <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>\n\
79 This is free software: you are free to change and redistribute it.\n\
80 There is NO WARRANTY, to the extent permitted by law.\n"),
86 printf(_("Usage: %s [OPTION]...\n"), program_name);
88 puts(_("psensor-server is an HTTP server "
89 "for monitoring hardware sensors remotely."));
94 -h, --help display this help and exit\n\
95 -v, --version display version information and exit"));
100 -d,--debug run in debug mode\n\
101 -p,--port=PORT webserver port\n\
102 -w,--wdir=DIR directory containing webserver pages"));
106 printf(_("Report bugs to: %s\n"), PACKAGE_BUGREPORT);
108 printf(_("%s home page: <%s>\n"), PACKAGE_NAME, PACKAGE_URL);
112 Returns the file path corresponding to a given URL
114 char *get_path(const char *url, const char *www_dir)
119 if (!strlen(url) || !strcmp(url, ".") || !strcmp(url, "/"))
124 res = malloc(strlen(www_dir)+strlen(p)+1);
126 strcpy(res, www_dir);
133 file_reader(void *cls, uint64_t pos, char *buf, int max)
137 fseek(file, pos, SEEK_SET);
138 return fread(buf, 1, max, file);
141 struct MHD_Response *
142 create_response_api(const char *nurl,
144 unsigned int *rp_code)
146 struct MHD_Response *resp;
150 if (!strcmp(nurl, URL_BASE_API_1_0_SENSORS)) {
152 page = sensors_to_json_string(server_data.sensors);
155 } else if (!strcmp(nurl, URL_API_1_0_SYSINFO)) {
157 page = sysinfo_to_json_string(&server_data.psysinfo);
159 } else if (!strncmp(nurl, URL_BASE_API_1_0_SENSORS,
160 strlen(URL_BASE_API_1_0_SENSORS))
161 && nurl[strlen(URL_BASE_API_1_0_SENSORS)] == '/') {
163 const char *sid = nurl + strlen(URL_BASE_API_1_0_SENSORS) + 1;
165 s = psensor_list_get_by_id(server_data.sensors, sid);
168 page = sensor_to_json_string(s);
170 } else if (debug && !strcmp(nurl, URL_API_1_0_SERVER_STOP)) {
172 server_stop_requested = 1;
173 page = strdup(_("<html><body><p>"
174 "Server stop requested</p></body></html>"));
178 *rp_code = MHD_HTTP_OK;
180 resp = MHD_create_response_from_data(strlen(page), page,
183 MHD_add_response_header(resp, MHD_HTTP_HEADER_CONTENT_TYPE,
192 struct MHD_Response *
193 create_response_file(const char *nurl,
195 unsigned int *rp_code,
198 if (is_file(fpath)) {
199 FILE *file = fopen(fpath, "rb");
205 *rp_code = MHD_HTTP_OK;
209 return MHD_create_response_from_data
210 (0, NULL, MHD_NO, MHD_NO);
213 return MHD_create_response_from_callback
218 (MHD_ContentReaderFreeCallback)&fclose);
226 struct MHD_Response *
227 create_response(const char *nurl, const char *method, unsigned int *rp_code)
229 struct MHD_Response *resp = NULL;
231 if (!strncmp(nurl, URL_BASE_API_1_0, strlen(URL_BASE_API_1_0))) {
232 resp = create_response_api(nurl, method, rp_code);
234 char *fpath = get_path(nurl, server_data.www_dir);
236 resp = create_response_file(nurl, method, rp_code, fpath);
244 char *page = strdup(PAGE_NOT_FOUND);
245 *rp_code = MHD_HTTP_NOT_FOUND;
247 return MHD_create_response_from_data
248 (strlen(page), page, MHD_YES, MHD_NO);
253 cbk_http_request(void *cls,
254 struct MHD_Connection *connection,
258 const char *upload_data,
259 size_t *upload_data_size, void **ptr)
262 struct MHD_Response *response;
265 unsigned int resp_code;
267 if (strcmp(method, "GET"))
270 if (&dummy != *ptr) {
271 /* The first time only the headers are valid, do not
272 respond in the first round... */
277 if (*upload_data_size)
280 *ptr = NULL; /* clear context pointer */
283 printf(_("HTTP Request: %s\n"), url);
285 nurl = url_normalize(url);
287 pthread_mutex_lock(&mutex);
288 response = create_response(nurl, method, &resp_code);
289 pthread_mutex_unlock(&mutex);
291 ret = MHD_queue_response(connection, resp_code, response);
292 MHD_destroy_response(response);
299 int main(int argc, char *argv[])
301 struct MHD_Daemon *d;
302 int port = DEFAULT_PORT;
306 program_name = argv[0];
308 setlocale(LC_ALL, "");
311 bindtextdomain(PACKAGE, LOCALEDIR);
315 server_data.www_dir = DEFAULT_WWW_DIR;
316 server_data.psysinfo.interfaces = NULL;
318 while ((optc = getopt_long(argc, argv,
319 "vhp:w:d", long_options, NULL)) != -1) {
323 server_data.www_dir = strdup(optarg);
344 if (!cmdok || optind != argc) {
345 fprintf(stderr, _("Try `%s --help' for more information.\n"),
352 server_data.sensors = get_all_sensors(600);
354 if (!*server_data.sensors)
355 fprintf(stderr, _("ERROR: no sensors detected\n"));
357 d = MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION,
359 NULL, NULL, &cbk_http_request, server_data.sensors,
362 fprintf(stderr, _("ERROR: Fail to create web server\n"));
366 printf(_("Web server started on port: %d\n"), port);
367 printf(_("WWW directory: %s\n"), server_data.www_dir);
368 printf(_("URL: http://localhost:%d\n"), port);
370 while (!server_stop_requested) {
371 pthread_mutex_lock(&mutex);
374 sysinfo_update(&server_data.psysinfo);
376 psensor_list_update_measures(server_data.sensors);
378 pthread_mutex_unlock(&mutex);
384 /* sanity cleanup for valgrind */
385 psensor_list_free(server_data.sensors);
386 free(server_data.www_dir);