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authorGravatar Christian Hesse <mail@eworm.de>2017-04-29 00:30:38 +0200
committerGravatar Christian Hesse <mail@eworm.de>2017-04-29 00:34:01 +0200
commit984f4ad69f9b7bad5dc54472dd374fd7edc5a5a9 (patch)
treeae652fc00e7217c7b77beb722893c4ad60f7e747 /pacredir.c
parent24ab5936629e735ff551f060a894fd93ad91470e (diff)
downloadpaccache-master.tar.gz
paccache-master.tar.zst
This project has been renamed to `pacredir`. Please...HEADmaster
... get it from https://github.com/eworm-de/pacredir#pacredir or https://git.eworm.de/cgit.cgi/pacredir/about/
Diffstat (limited to 'pacredir.c')
-rw-r--r--pacredir.c774
1 files changed, 0 insertions, 774 deletions
diff --git a/pacredir.c b/pacredir.c
deleted file mode 100644
index 60fca60..0000000
--- a/pacredir.c
+++ /dev/null
@@ -1,774 +0,0 @@
-/*
- * (C) 2013-2017 by Christian Hesse <mail@eworm.de>
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- */
-
-/* define structs and functions */
-#include "pacredir.h"
-
-const static char optstring[] = "hvV";
-const static struct option options_long[] = {
- /* name has_arg flag val */
- { "help", no_argument, NULL, 'h' },
- { "verbose", no_argument, NULL, 'v' },
- { "version", no_argument, NULL, 'V' },
- { 0, 0, 0, 0 }
-};
-
-/* global variables */
-struct hosts * hosts = NULL;
-struct ignore_interfaces * ignore_interfaces = NULL;
-int max_threads = 0;
-static AvahiSimplePoll *simple_poll = NULL;
-uint8_t verbose = 0;
-
-/*** write_log ***/
-int write_log(FILE *stream, const char *format, ...) {
- va_list args;
- va_start(args, format);
-
- vfprintf(stream, format, args);
- fflush(stream);
-
- return EXIT_SUCCESS;
-}
-
-/*** get_fqdn ***/
-char * get_fqdn(const char * hostname, const char * domainname) {
- char * name;
-
- name = malloc(strlen(hostname) + strlen(domainname) + 2 /* '.' and null char */);
- sprintf(name, "%s.%s", hostname, domainname);
-
- return name;
-}
-
-/*** get_url ***/
-char * get_url(const char * hostname, const uint16_t port, const char * uri) {
- char * url;
-
- url = malloc(10 /* static chars of an url & null char */
- + strlen(hostname)
- + 5 /* max strlen of decimal 16bit value */
- + strlen(uri));
- sprintf(url, "http://%s:%d/%s",
- hostname, port, uri);
-
- return url;
-}
-
-/*** add_host ***/
-int add_host(const char * host, const uint16_t port, const char * type) {
- struct hosts * tmphosts = hosts;
- struct request request;
-
- while (tmphosts->host != NULL) {
- if (strcmp(tmphosts->host, host) == 0) {
- /* host already exists */
- if (verbose > 0)
- write_log(stdout, "Updating service %s (port %d) on host %s\n",
- type, port, host);
- goto update;
- }
- tmphosts = tmphosts->next;
- }
-
- /* host not found, adding a new one */
- if (verbose > 0)
- write_log(stdout, "Adding host %s with service %s (port %d)\n",
- host, type, port);
- tmphosts->host = strdup(host);
-
- tmphosts->pacserve.port = 0;
- tmphosts->pacserve.online = 0;
- tmphosts->pacserve.badtime = 0;
- tmphosts->pacserve.badcount = 0;
-
- tmphosts->pacdbserve.port = 0;
- tmphosts->pacdbserve.online = 0;
- tmphosts->pacdbserve.badtime = 0;
- tmphosts->pacdbserve.badcount = 0;
-
- tmphosts->next = malloc(sizeof(struct hosts));
- tmphosts->next->host = NULL;
- tmphosts->next->next = NULL;
-
-update:
- if (strcmp(type, PACSERVE) == 0) {
- tmphosts->pacserve.online = 1;
- tmphosts->pacserve.port = port;
- request.service = &tmphosts->pacserve;
- } else if (strcmp(type, PACDBSERVE) == 0) {
- tmphosts->pacdbserve.online = 1;
- tmphosts->pacdbserve.port = port;
- request.service = &tmphosts->pacdbserve;
- }
-
- /* do a first request and let get_http_code() set the bad status */
- request.host = tmphosts->host;
- request.url = get_url(request.host, request.service->port, "");
- request.http_code = 0;
- request.last_modified = 0;
- get_http_code(&request);
- free(request.url);
-
- return EXIT_SUCCESS;
-}
-
-/*** remove_host ***/
-int remove_host(const char * host, const char * type) {
- struct hosts * tmphosts = hosts;
-
- while (tmphosts->host != NULL) {
- if (strcmp(tmphosts->host, host) == 0) {
- if (verbose > 0)
- write_log(stdout, "Marking service %s on host %s offline\n",
- type, host);
- if (strcmp(type, PACSERVE) == 0) {
- tmphosts->pacserve.online = 0;
- } else if (strcmp(type, PACDBSERVE) == 0) {
- tmphosts->pacdbserve.online = 0;
- }
- break;
- }
- tmphosts = tmphosts->next;
- }
-
- return EXIT_SUCCESS;
-}
-
-/*** browse_callback ***
- * Called whenever a new services becomes available on the LAN or is removed from the LAN */
-static void browse_callback(AvahiServiceBrowser *b,
- AvahiIfIndex interface,
- AvahiProtocol protocol,
- AvahiBrowserEvent event,
- const char *name,
- const char *type,
- const char *domain,
- AVAHI_GCC_UNUSED AvahiLookupResultFlags flags,
- void* userdata) {
- char * host;
- char intname[IFNAMSIZ];
- struct ignore_interfaces * tmp_ignore_interfaces = ignore_interfaces;
-
- assert(b);
-
- switch (event) {
- case AVAHI_BROWSER_FAILURE:
-
- write_log(stderr, "%s\n", avahi_strerror(avahi_client_errno(avahi_service_browser_get_client(b))));
- avahi_simple_poll_quit(simple_poll);
- return;
-
- case AVAHI_BROWSER_NEW:
- host = get_fqdn(name, domain);
-
- if (flags & AVAHI_LOOKUP_RESULT_LOCAL)
- goto out;
-
- /* check whether to ignore the interface */
- if_indextoname(interface, intname);
- while (tmp_ignore_interfaces->next != NULL) {
- if (strcmp(intname, tmp_ignore_interfaces->interface) == 0) {
- if (verbose > 0)
- write_log(stdout, "Ignoring service %s on host %s on interface %s\n",
- type, host, intname);
- goto out;
- }
- tmp_ignore_interfaces = tmp_ignore_interfaces->next;
- }
-
- if (verbose > 0)
- write_log(stdout, "Found service %s on host %s on interface %s\n",
- type, host, intname);
-
- add_host(host, strcmp(type, PACSERVE) == 0 ? PORT_PACSERVE : PORT_PACDBSERVE, type);
-out:
- free(host);
-
- break;
-
- case AVAHI_BROWSER_REMOVE:
- host = get_fqdn(name, domain);
-
- if (verbose > 0)
- write_log(stdout, "Service %s on host %s disappeared\n",
- type, host);
-
- remove_host(host, type);
-
- free(host);
-
- break;
-
- case AVAHI_BROWSER_ALL_FOR_NOW:
- case AVAHI_BROWSER_CACHE_EXHAUSTED:
- break;
- }
-}
-
-/*** client_callback ***/
-static void client_callback(AvahiClient *c,
- AvahiClientState state,
- AVAHI_GCC_UNUSED void * userdata) {
- assert(c);
-
- if (state == AVAHI_CLIENT_FAILURE) {
- write_log(stderr, "Server connection failure: %s\n", avahi_strerror(avahi_client_errno(c)));
- avahi_simple_poll_quit(simple_poll);
- }
-}
-
-/*** get_http_code ***/
-static void * get_http_code(void * data) {
- struct request * request = (struct request *)data;
- CURL *curl;
- CURLcode res;
- char errbuf[CURL_ERROR_SIZE];
- struct timeval tv;
-
- gettimeofday(&tv, NULL);
-
- if ((curl = curl_easy_init()) != NULL) {
- curl_easy_setopt(curl, CURLOPT_URL, request->url);
- /* try to resolve addresses to all IP versions that your system allows */
- curl_easy_setopt(curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_WHATEVER);
- /* tell libcurl to follow redirection */
- curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
- /* set user agent */
- curl_easy_setopt(curl, CURLOPT_USERAGENT, "pacredir/" VERSION " (" ARCH ")");
- /* do not receive body */
- curl_easy_setopt(curl, CURLOPT_NOBODY, 1L);
- /* ask for filetime */
- curl_easy_setopt(curl, CURLOPT_FILETIME, 1L);
- /* set connection timeout to 5 seconds
- * if the host needs longer we do not want to use it anyway ;) */
- curl_easy_setopt(curl, CURLOPT_CONNECTTIMEOUT, 5L);
- /* time out if connection is established but transfer rate is low
- * this should make curl finish after a maximum of 8 seconds */
- curl_easy_setopt(curl, CURLOPT_LOW_SPEED_LIMIT, 1L);
- curl_easy_setopt(curl, CURLOPT_LOW_SPEED_TIME, 3L);
- /* provide a buffer to store errors in */
- curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errbuf);
- *errbuf = '\0';
-
- /* perform the request */
- if ((res = curl_easy_perform(curl)) != CURLE_OK) {
- write_log(stderr, "Could not connect to server %s on port %d: %s\n",
- request->host, request->service->port,
- *errbuf != 0 ? errbuf : curl_easy_strerror(res));
- request->http_code = 0;
- request->last_modified = 0;
- request->service->badtime = tv.tv_sec;
- request->service->badcount++;
- return NULL;
- } else {
- request->service->badtime = 0;
- request->service->badcount = 0;
- }
-
- /* get http status code */
- if ((res = curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &(request->http_code))) != CURLE_OK) {
- write_log(stderr, "curl_easy_getinfo() failed: %s\n", curl_easy_strerror(res));
- return NULL;
- }
-
- if ((res = curl_easy_getinfo(curl, CURLINFO_TOTAL_TIME, &(request->time_total))) != CURLE_OK) {
- write_log(stderr, "curl_easy_getinfo() failed: %s\n", curl_easy_strerror(res));
- return NULL;
- }
-
- /* get last modified time */
- if (request->http_code == MHD_HTTP_OK) {
- if ((res = curl_easy_getinfo(curl, CURLINFO_FILETIME, &(request->last_modified))) != CURLE_OK) {
- write_log(stderr, "curl_easy_getinfo() failed: %s\n", curl_easy_strerror(res));
- return NULL;
- }
- } else
- request->last_modified = 0;
-
- /* always cleanup */
- curl_easy_cleanup(curl);
- }
-
- return NULL;
-}
-
-/*** ahc_echo ***
- * called whenever a http request is received */
-static int ahc_echo(void * cls,
- struct MHD_Connection * connection,
- const char * uri,
- const char * method,
- const char * version,
- const char * upload_data,
- size_t * upload_data_size,
- void ** ptr) {
- static int dummy;
- struct MHD_Response * response;
- int ret;
- struct hosts * tmphosts = hosts;
-
- char * url = NULL, * page;
- const char * basename;
- struct timeval tv;
-
- struct stat fst;
- char * filename;
- uint8_t dbfile = 0;
- int i, error, req_count = -1;
- pthread_t * tid = NULL;
- struct request ** requests = NULL;
- struct request * request = NULL;
- long http_code = 0, last_modified = 0;
- double time_total = INFINITY;
- char ctime[26];
-
- /* initialize struct timeval */
- gettimeofday(&tv, NULL);
-
- /* we want the filename, not the path */
- basename = uri;
- while (strstr(basename, "/") != NULL)
- basename = strstr(basename, "/") + 1;
-
- /* unexpected method */
- if (strcmp(method, "GET") != 0)
- return MHD_NO;
-
- /* The first time only the headers are valid,
- * do not respond in the first round... */
- if (&dummy != *ptr) {
- *ptr = &dummy;
- return MHD_YES;
- }
-
- /* upload data in a GET!? */
- if (*upload_data_size != 0)
- return MHD_NO;
-
- /* clear context pointer */
- *ptr = NULL;
-
- /* redirect to website if no file given */
- if (*basename == 0) {
- http_code = MHD_HTTP_OK;
- /* duplicate string so we can free it later */
- url = strdup(WEBSITE);
- goto response;
- }
-
- /* process db file request (*.db and *.files) */
- if ((strlen(basename) > 3 && strcmp(basename + strlen(basename) - 3, ".db") == 0) ||
- (strlen(basename) > 6 && strcmp(basename + strlen(basename) - 6, ".files") == 0)) {
- dbfile = 1;
- /* get timestamp of local file */
- filename = malloc(strlen(SYNCPATH) + strlen(basename) + 2);
- sprintf(filename, SYNCPATH "/%s", basename);
-
- if (stat(filename, &fst) != 0) {
- if (verbose > 0)
- write_log(stdout, "You do not have a local copy of %s\n", basename);
- } else
- last_modified = fst.st_mtime;
-
- free(filename);
- }
-
- /* try to find a server with most recent file */
- while (tmphosts->host != NULL) {
- struct services *service = (dbfile ? &tmphosts->pacdbserve : &tmphosts->pacserve);
- time_t badtime = service->badtime + service->badcount * BADTIME;
-
- /* skip host if offline or had a bad request within last BADTIME seconds */
- if (service->online == 0) {
- if (verbose > 0)
- write_log(stdout, "Service %s on host %s is offline, skipping\n",
- dbfile ? PACDBSERVE : PACSERVE, tmphosts->host);
- tmphosts = tmphosts->next;
- continue;
- } else if (badtime > tv.tv_sec) {
- if (verbose > 0) {
- /* write the time to buffer ctime, then strip the line break */
- ctime_r(&badtime, ctime);
- ctime[strlen(ctime) - 1] = '\0';
-
- write_log(stdout, "Service %s on host %s is marked bad until %s, skipping\n",
- dbfile ? PACDBSERVE : PACSERVE, tmphosts->host, ctime);
- }
- tmphosts = tmphosts->next;
- continue;
- }
-
- /* Check for limit on threads */
- if (max_threads > 0 && req_count + 1 >= max_threads) {
- if (verbose > 0)
- write_log(stdout, "Hit hard limit for max threads (%d), not doing more requests\n",
- max_threads);
- break;
- }
-
- /* throttle requests - do not send all request at the same time
- * but wait for a short moment (10.000 us = 0.01 s) */
- usleep(10000);
-
- /* This is multi-threading code!
- * Pointer to struct request does not work as realloc can relocate the data.
- * We need a pointer to pointer to struct request, store the addresses in
- * an array and give get_http_code() a struct the does not change! */
- req_count++;
- tid = realloc(tid, sizeof(pthread_t) * (req_count + 1));
- requests = realloc(requests, sizeof(size_t) * (req_count + 1));
- requests[req_count] = malloc(sizeof(struct request));
- request = requests[req_count];
-
- /* prepare request struct */
- request->host = tmphosts->host;
- if (dbfile == 1)
- request->service = &(tmphosts->pacdbserve);
- else
- request->service = &(tmphosts->pacserve);
- request->url = get_url(tmphosts->host, request->service->port, basename);
- request->http_code = 0;
- request->last_modified = 0;
-
- if (verbose > 0)
- write_log(stdout, "Trying: %s\n", request->url);
-
- if ((error = pthread_create(&tid[req_count], NULL, get_http_code, (void *)request)) != 0)
- write_log(stderr, "Could not run thread number %d, errno %d\n", req_count, error);
-
- tmphosts = tmphosts->next;
- }
-
- /* try to find a suitable response */
- for (i = 0; i <= req_count; i++) {
- if ((error = pthread_join(tid[i], NULL)) != 0)
- write_log(stderr, "Could not join thread number %d, errno %d\n", i, error);
-
- request = requests[i];
-
- if (request->http_code == MHD_HTTP_OK) {
- if (verbose > 0) {
- /* write the time to buffer ctime, then strip the line break */
- ctime_r(&request->last_modified, ctime);
- ctime[strlen(ctime) - 1] = '\0';
-
- write_log(stdout, "Found: %s (%f sec, modified: %s)\n",
- request->url, request->time_total, ctime);
- }
- } else if (verbose > 0 && request->http_code > 0) {
- if (verbose > 0)
- write_log(stderr, "Received HTTP status code %d for %s\n",
- request->http_code, request->url);
- }
-
- if (request->http_code == MHD_HTTP_OK &&
- /* for db files choose the most recent server */
- ((dbfile == 1 && ((request->last_modified > last_modified) ||
- /* but use a faster server if available */
- (url != NULL &&
- request->last_modified >= last_modified &&
- request->time_total < time_total))) ||
- /* for packages try to guess the fastest server */
- (dbfile == 0 && request->time_total < time_total))) {
- if (url != NULL)
- free(url);
- url = request->url;
- http_code = MHD_HTTP_OK;
- last_modified = request->last_modified;
- time_total = request->time_total;
- } else
- free(request->url);
- free(request);
- }
-
-response:
- /* give response */
- if (http_code == MHD_HTTP_OK) {
- write_log(stdout, "Redirecting to %s\n", url);
- page = malloc(strlen(PAGE307) + strlen(url) + strlen(basename) + 1);
- sprintf(page, PAGE307, url, basename);
- response = MHD_create_response_from_buffer(strlen(page), (void*) page, MHD_RESPMEM_PERSISTENT);
- ret = MHD_add_response_header(response, "Location", url);
- ret = MHD_queue_response(connection, MHD_HTTP_TEMPORARY_REDIRECT, response);
- free(url);
- } else {
- if (req_count < 0)
- write_log(stdout, "Currently no servers are available to check for %s.\n",
- basename);
- else if (dbfile == 1)
- write_log(stdout, "No more recent version of %s found on %d servers.\n",
- basename, req_count + 1);
- else
- write_log(stdout, "File %s not found on %d servers, giving up.\n",
- basename, req_count + 1);
-
- page = malloc(strlen(PAGE404) + strlen(basename) + 1);
- sprintf(page, PAGE404, basename);
- response = MHD_create_response_from_buffer(strlen(page), (void*) page, MHD_RESPMEM_PERSISTENT);
- ret = MHD_queue_response(connection, MHD_HTTP_NOT_FOUND, response);
- }
-
- MHD_destroy_response(response);
-
- free(page);
- if (req_count > -1) {
- free(tid);
- free(requests);
- }
-
- return ret;
-}
-
-/*** sig_callback ***/
-void sig_callback(int signal) {
- write_log(stdout, "Received signal '%s', quitting.\n", strsignal(signal));
-
- avahi_simple_poll_quit(simple_poll);
-}
-
-/*** sighup_callback ***/
-void sighup_callback(int signal) {
- struct hosts * tmphosts = hosts;
-
- write_log(stdout, "Received SIGHUP, resetting bad status for hosts.\n");
-
- while (tmphosts->host != NULL) {
- tmphosts->pacserve.badtime = 0;
- tmphosts->pacserve.badcount = 0;
- tmphosts->pacdbserve.badtime = 0;
- tmphosts->pacdbserve.badcount = 0;
- tmphosts = tmphosts->next;
- }
-}
-
-/*** main ***/
-int main(int argc, char ** argv) {
- dictionary * ini;
- const char * inistring;
- char * values, * value;
- uint16_t port;
- struct ignore_interfaces * tmp_ignore_interfaces;
- AvahiClient *client = NULL;
- AvahiServiceBrowser *pacserve = NULL, *pacdbserve = NULL;
- int error, i, ret = 1;
- struct MHD_Daemon * mhd;
- struct hosts * tmphosts;
- struct sockaddr_in address;
-
- unsigned int version = 0, help = 0;
-
- /* get the verbose status */
- while ((i = getopt_long(argc, argv, optstring, options_long, NULL)) != -1) {
- switch (i) {
- case 'h':
- help++;
- break;
- case 'v':
- verbose++;
- break;
- case 'V':
- verbose++;
- version++;
- break;
- }
- }
-
- if (verbose > 0)
- write_log(stdout, "%s: %s v%s (compiled: " __DATE__ ", " __TIME__ " for %s)\n",
- argv[0], PROGNAME, VERSION, ARCH);
-
- if (help > 0)
- write_log(stdout, "usage: %s [-h] [-v] [-V]\n", argv[0]);
-
- if (version > 0 || help > 0)
- return EXIT_SUCCESS;
-
- /* allocate first struct element as dummy */
- hosts = malloc(sizeof(struct hosts));
- hosts->host = NULL;
- hosts->pacserve.online = 0;
- hosts->pacserve.badtime = 0;
- hosts->pacdbserve.online = 0;
- hosts->pacdbserve.badtime = 0;
- hosts->next = NULL;
-
- ignore_interfaces = malloc(sizeof(struct ignore_interfaces));
- ignore_interfaces->interface = NULL;
- ignore_interfaces->next = NULL;
-
- /* Probing for static pacserve and pacdbserve hosts takes some time.
- * Receiving a SIGHUP at this time could kill us. So register signal
- * SIGHUP here before probing. */
- signal(SIGHUP, sighup_callback);
-
- /* parse config file */
- if ((ini = iniparser_load(CONFIGFILE)) == NULL) {
- write_log(stderr, "cannot parse file " CONFIGFILE ", continue anyway\n");
- /* continue anyway, there is nothing essential in the config file */
- } else {
- /* get max threads */
- max_threads = iniparser_getint(ini, "general:max threads", max_threads);
- if (verbose > 0 && max_threads > 0)
- write_log(stdout, "Limiting number of threads to a maximum of %d\n", max_threads);
-
- /* store interfaces to ignore */
- if ((inistring = iniparser_getstring(ini, "general:ignore interfaces", NULL)) != NULL) {
- values = strdup(inistring);
- tmp_ignore_interfaces = ignore_interfaces;
-
- value = strtok(values, DELIMITER);
- while (value != NULL) {
- if (verbose > 0)
- write_log(stdout, "Ignoring interface: %s\n", value);
- tmp_ignore_interfaces->interface = strdup(value);
- tmp_ignore_interfaces->next = malloc(sizeof(struct ignore_interfaces));
- tmp_ignore_interfaces = tmp_ignore_interfaces->next;
- value = strtok(NULL, DELIMITER);
- }
- tmp_ignore_interfaces->interface = NULL;
- tmp_ignore_interfaces->next = NULL;
- free(values);
- }
-
- /* add static pacserve hosts */
- if ((inistring = iniparser_getstring(ini, "general:pacserve hosts", NULL)) != NULL) {
- values = strdup(inistring);
- value = strtok(values, DELIMITER);
- while (value != NULL) {
- if (verbose > 0)
- write_log(stdout, "Adding static pacserve host: %s\n", value);
-
- if (strchr(value, ':') != NULL) {
- port = atoi(strchr(value, ':') + 1);
- *strchr(value, ':') = 0;
- } else
- port = PORT_PACSERVE;
- add_host(value, port, PACSERVE);
- value = strtok(NULL, DELIMITER);
- }
- free(values);
- }
-
- /* add static pacdbserve hosts */
- if ((inistring = iniparser_getstring(ini, "general:pacdbserve hosts", NULL)) != NULL) {
- values = strdup(inistring);
- value = strtok(values, DELIMITER);
- while (value != NULL) {
- if (verbose > 0)
- write_log(stdout, "Adding static pacdbserve host: %s\n", value);
-
- if (strchr(value, ':') != NULL) {
- port = atoi(strchr(value, ':') + 1);
- *strchr(value, ':') = 0;
- } else
- port = PORT_PACDBSERVE;
- add_host(value, port, PACDBSERVE);
- value = strtok(NULL, DELIMITER);
- }
- free(values);
- }
-
- /* done reading config file, free */
- iniparser_freedict(ini);
- }
-
- /* allocate main loop object */
- if ((simple_poll = avahi_simple_poll_new()) == NULL) {
- write_log(stderr, "Failed to create simple poll object.\n");
- goto fail;
- }
-
- /* allocate a new client */
- if ((client = avahi_client_new(avahi_simple_poll_get(simple_poll), 0, client_callback, NULL, &error)) == NULL) {
- write_log(stderr, "Failed to create client: %s\n", avahi_strerror(error));
- goto fail;
- }
-
- /* create the service browser for PACSERVE */
- if ((pacserve = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, PACSERVE, NULL, 0, browse_callback, NULL)) == NULL) {
- write_log(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
- goto fail;
- }
-
- /* create the service browser for PACDBSERVE */
- if ((pacdbserve = avahi_service_browser_new(client, AVAHI_IF_UNSPEC, AVAHI_PROTO_UNSPEC, PACDBSERVE, NULL, 0, browse_callback, NULL)) == NULL) {
- write_log(stderr, "Failed to create service browser: %s\n", avahi_strerror(avahi_client_errno(client)));
- goto fail;
- }
-
- /* prepare struct to make microhttpd listen on localhost only */
- address.sin_family = AF_INET;
- address.sin_port = htons(PORT_PACREDIR);
- inet_pton(AF_INET, "127.0.0.1", &address.sin_addr);
-
- /* start http server */
- if ((mhd = MHD_start_daemon(MHD_USE_THREAD_PER_CONNECTION, PORT_PACREDIR, NULL, NULL, &ahc_echo, NULL, MHD_OPTION_SOCK_ADDR, &address, MHD_OPTION_END)) == NULL) {
- write_log(stderr, "Could not start daemon on port %d.\n", PORT_PACREDIR);
- return EXIT_FAILURE;
- }
-
- /* initialize curl */
- curl_global_init(CURL_GLOBAL_ALL);
-
- /* register SIG{TERM,KILL,INT} signal callbacks */
- signal(SIGTERM, sig_callback);
- signal(SIGKILL, sig_callback);
- signal(SIGINT, sig_callback);
-
- /* report ready to systemd */
- sd_notify(0, "READY=1\nSTATUS=Waiting for requests to redirect...");
-
- /* run the main loop */
- avahi_simple_poll_loop(simple_poll);
-
- /* report stopping to systemd */
- sd_notify(0, "STOPPING=1\nSTATUS=Stopping...");
-
- /* stop http server */
- MHD_stop_daemon(mhd);
-
- /* we're done with libcurl, so clean it up */
- curl_global_cleanup();
-
- ret = EXIT_SUCCESS;
-
-fail:
-
- /* Cleanup things */
- while (hosts->host != NULL) {
- free(hosts->host);
- tmphosts = hosts->next;
- free(hosts);
- hosts = tmphosts;
- }
-
- while (ignore_interfaces->interface != NULL) {
- free(ignore_interfaces->interface);
- tmp_ignore_interfaces = ignore_interfaces->next;
- free(ignore_interfaces);
- ignore_interfaces = tmp_ignore_interfaces;
- }
-
- if (pacdbserve)
- avahi_service_browser_free(pacdbserve);
-
- if (pacserve)
- avahi_service_browser_free(pacserve);
-
- if (client)
- avahi_client_free(client);
-
- if (simple_poll)
- avahi_simple_poll_free(simple_poll);
-
- sd_notify(0, "STATUS=Stopped. Bye!");
-
- return ret;
-}
-
-// vim: set syntax=c: