/*
* Copyright © 2005-2007 Pierre Habouzit
+ * Copyright © 2008 Florent Bruneau
*/
#include "common.h"
#include "epoll.h"
#include "mem.h"
#include "buffer.h"
+#include "server.h"
#define DAEMON_NAME "pfix-srsd"
#define DEFAULT_ENCODER_PORT 10001
#define RUNAS_USER "nobody"
#define RUNAS_GROUP "nogroup"
-#define __tostr(x) #x
-#define STR(x) __tostr(x)
+DECLARE_MAIN
-/* srs encoder/decoder/listener worker {{{ */
+typedef struct srs_config_t {
+ srs_t* srs;
+ const char* domain;
+} srs_config_t;
-typedef struct srsd_t {
- unsigned listener : 1;
- unsigned decoder : 1;
- unsigned watchwr : 1;
- int fd;
- buffer_t ibuf;
- buffer_t obuf;
-} srsd_t;
+static const char* decoder_ptr = "decoder";
+static const char* encoder_ptr = "encoder";
-static srsd_t *srsd_new(void)
+static void *srsd_new_decoder(void)
{
- srsd_t *srsd = p_new(srsd_t, 1);
- srsd->fd = -1;
- return srsd;
+ return (void*)decoder_ptr;
}
-static void srsd_delete(srsd_t **srsd)
+static void *srsd_new_encoder(void)
{
- if (*srsd) {
- if ((*srsd)->fd >= 0)
- close((*srsd)->fd);
- buffer_wipe(&(*srsd)->ibuf);
- buffer_wipe(&(*srsd)->obuf);
- p_delete(srsd);
- }
+ return (void*)encoder_ptr;
+}
+
+static void *srsd_stater(server_t *server)
+{
+ return server->data;
}
void urldecode(char *s, char *end)
*s++ = '\0';
}
-int process_srs(srs_t *srs, const char *domain, srsd_t *srsd)
+int process_srs(server_t *srsd, void* vconfig)
{
+ srs_config_t* config = vconfig;
+ int res = buffer_read(&srsd->ibuf, srsd->fd, -1);
+
+ if ((res < 0 && errno != EINTR && errno != EAGAIN) || res == 0)
+ return -1;
+
while (srsd->ibuf.len > 4) {
char buf[BUFSIZ], *p, *q, *nl;
int err;
syslog(LOG_ERR, "unreasonnable amount of data without a \\n");
return -1;
}
+ if (srsd->obuf.len) {
+ epoll_modify(srsd->fd, EPOLLIN | EPOLLOUT, srsd);
+ }
return 0;
}
urldecode(p, q);
- if (srsd->decoder) {
- err = srs_reverse(srs, buf, ssizeof(buf), p);
+ if (srsd->data == (void*)decoder_ptr) {
+ err = srs_reverse(config->srs, buf, ssizeof(buf), p);
} else {
- err = srs_forward(srs, buf, ssizeof(buf), p, domain);
+ err = srs_forward(config->srs, buf, ssizeof(buf), p, config->domain);
}
if (err == 0) {
skip:
buffer_consume(&srsd->ibuf, nl - srsd->ibuf.data);
}
-
- return 0;
-}
-
-int start_listener(int port, bool decoder)
-{
- struct sockaddr_in addr = {
- .sin_family = AF_INET,
- .sin_addr = { htonl(INADDR_LOOPBACK) },
- };
- struct epoll_event evt = { .events = EPOLLIN };
- srsd_t *tmp;
- int sock;
-
- addr.sin_port = htons(port);
- sock = tcp_listen_nonblock((const struct sockaddr *)&addr, sizeof(addr));
- if (sock < 0) {
- return -1;
- }
-
- evt.data.ptr = tmp = srsd_new();
- tmp->fd = sock;
- tmp->decoder = decoder;
- tmp->listener = true;
- if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &evt) < 0) {
- UNIXERR("epoll_ctl");
- return -1;
+ if (srsd->obuf.len) {
+ epoll_modify(srsd->fd, EPOLLIN | EPOLLOUT, srsd);
}
return 0;
}
-void start_client(srsd_t *srsd)
+int start_listener(int port, bool decoder)
{
- struct epoll_event evt = { .events = EPOLLIN };
- srsd_t *tmp;
- int sock;
-
- sock = accept_nonblock(srsd->fd);
- if (sock < 0) {
- UNIXERR("accept");
- return;
- }
-
- evt.data.ptr = tmp = srsd_new();
- tmp->decoder = srsd->decoder;
- tmp->fd = sock;
- if (epoll_ctl(epollfd, EPOLL_CTL_ADD, sock, &evt) < 0) {
- UNIXERR("epoll_ctl");
- srsd_delete(&tmp);
- close(sock);
- }
+ return start_server(port, decoder ? srsd_new_decoder : srsd_new_encoder, NULL);
}
/* }}} */
/* administrivia {{{ */
-static int main_initialize(void)
-{
- openlog(DAEMON_NAME, LOG_PID, LOG_MAIL);
- signal(SIGPIPE, SIG_IGN);
- signal(SIGINT, &common_sighandler);
- signal(SIGTERM, &common_sighandler);
- signal(SIGHUP, &common_sighandler);
- signal(SIGSEGV, &common_sighandler);
- syslog(LOG_INFO, "Starting...");
- return 0;
-}
-
-static void main_shutdown(void)
-{
- closelog();
-}
-
-module_init(main_initialize);
-module_exit(main_shutdown);
void usage(void)
{
/* }}} */
-int main_loop(srs_t *srs, const char *domain, int port_enc, int port_dec)
-{
- if (start_listener(port_enc, false) < 0)
- return EXIT_FAILURE;
- if (start_listener(port_dec, true) < 0)
- return EXIT_FAILURE;
-
- while (!sigint) {
- struct epoll_event evts[1024];
- int n;
-
- n = epoll_wait(epollfd, evts, countof(evts), -1);
- if (n < 0) {
- if (errno != EAGAIN && errno != EINTR) {
- UNIXERR("epoll_wait");
- return EXIT_FAILURE;
- }
- continue;
- }
-
- while (--n >= 0) {
- srsd_t *srsd = evts[n].data.ptr;
-
- if (srsd->listener) {
- start_client(srsd);
- continue;
- }
-
- if (evts[n].events & EPOLLIN) {
- int res = buffer_read(&srsd->ibuf, srsd->fd, -1);
-
- if ((res < 0 && errno != EINTR && errno != EAGAIN)
- || res == 0)
- {
- srsd_delete(&srsd);
- continue;
- }
-
- if (process_srs(srs, domain, srsd) < 0) {
- srsd_delete(&srsd);
- continue;
- }
- }
-
- if ((evts[n].events & EPOLLOUT) && srsd->obuf.len) {
- int res = buffer_write(&srsd->obuf, srsd->fd);
- if (res < 0) {
- srsd_delete(&srsd);
- continue;
- }
- }
-
- if (srsd->watchwr == !srsd->obuf.len) {
- struct epoll_event evt = {
- .events = EPOLLIN | (srsd->obuf.len ? EPOLLOUT : 0),
- .data.ptr = srsd,
- };
- if (epoll_ctl(epollfd, EPOLL_CTL_MOD, srsd->fd, &evt) < 0) {
- UNIXERR("epoll_ctl");
- srsd_delete(&srsd);
- continue;
- }
- srsd->watchwr = srsd->obuf.len != 0;
- }
- }
- }
-
- return EXIT_SUCCESS;
-}
-
static srs_t *srs_read_secrets(const char *sfile)
{
srs_t *srs;
int port_dec = DEFAULT_DECODER_PORT;
const char *pidfile = NULL;
- int res;
srs_t *srs;
for (int c = 0; (c = getopt(argc, argv, "hfu" "e:d:p:")) >= 0; ) {
return EXIT_FAILURE;
}
- if (pidfile_open(pidfile) < 0) {
- syslog(LOG_CRIT, "unable to write pidfile %s", pidfile);
+ if (common_setup(pidfile, unsafe, RUNAS_USER, RUNAS_GROUP, daemonize)
+ != EXIT_SUCCESS) {
return EXIT_FAILURE;
}
-
- if (!unsafe && drop_privileges(RUNAS_USER, RUNAS_GROUP) < 0) {
- syslog(LOG_CRIT, "unable to drop privileges");
- return EXIT_FAILURE;
+ {
+ srs_config_t config = {
+ .srs = srs,
+ .domain = argv[optind]
+ };
+
+ if (start_listener(port_enc, false) < 0)
+ return EXIT_FAILURE;
+ if (start_listener(port_dec, true) < 0)
+ return EXIT_FAILURE;
+
+ return server_loop(srsd_stater, NULL, process_srs, &config);
}
-
- if (daemonize && daemon_detach() < 0) {
- syslog(LOG_CRIT, "unable to fork");
- return EXIT_FAILURE;
- }
-
- pidfile_refresh();
- res = main_loop(srs, argv[optind], port_enc, port_dec);
- syslog(LOG_INFO, "Stopping...");
- return res;
}
projects / apps / pfixtools.git / blobdiff