/*
* 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;
- int fd;
- buffer_t ibuf;
- buffer_t obuf;
-} srsd_t;
-static srsd_t *srsd_new(void)
+/* Server {{{1
+ */
+
+static const char* const decoder_ptr = "decoder";
+static const char* const encoder_ptr = "encoder";
+
+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_starter(server_t *server)
+{
+ return server->data;
}
+int start_listener(int port, bool decoder)
+{
+ return start_server(port, decoder ? srsd_new_decoder : srsd_new_encoder, NULL);
+}
+
+
+/* Processing {{{1
+ */
+
void urldecode(char *s, char *end)
{
char *p = s;
*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)
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) },
- };
- 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;
+ if (srsd->obuf.len) {
+ epoll_modify(srsd->fd, EPOLLIN | EPOLLOUT, srsd);
}
-
- tmp = srsd_new();
- tmp->fd = sock;
- tmp->decoder = decoder;
- tmp->listener = true;
- epoll_register(sock, EPOLLIN, tmp);
return 0;
}
-void start_client(srsd_t *srsd)
-{
- srsd_t *tmp;
- int sock;
-
- sock = accept_nonblock(srsd->fd);
- if (sock < 0) {
- UNIXERR("accept");
- return;
- }
- tmp = srsd_new();
- tmp->decoder = srsd->decoder;
- tmp->fd = sock;
- epoll_register(sock, EPOLLIN, tmp);
-}
+/* config {{{1
+ */
-/* }}} */
-/* administrivia {{{ */
+static srs_config_t config = {
+ .srs = NULL,
+ .domain = NULL
+};
-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;
-}
+/** overload srs_free since the lib is not properly maintained.
+ */
+#undef srs_free
-static void main_shutdown(void)
+inline void srs_free(srs_t* srs)
{
- closelog();
+ int i;
+ for (i = 0; i < srs->numsecrets; i++) {
+ memset(srs->secrets[i], 0, strlen(srs->secrets[i]));
+ free(srs->secrets[i]);
+ srs->secrets[i] = '\0';
+ }
+ if (srs->secrets) {
+ free(srs->secrets);
+ }
+ free(srs);
}
-module_init(main_initialize);
-module_exit(main_shutdown);
-
-void usage(void)
+static void config_shutdown(void)
{
- fputs("usage: "DAEMON_NAME" [options] domain secrets\n"
- "\n"
- "Options:\n"
- " -e <port> port to listen to for encoding requests\n"
- " (default: "STR(DEFAULT_ENCODER_PORT)")\n"
- " -d <port> port to listen to for decoding requests\n"
- " (default: "STR(DEFAULT_DECODER_PORT)")\n"
- " -p <pidfile> file to write our pid to\n"
- " -u unsafe mode: don't drop privilegies\n"
- " -f stay in foreground\n"
- , stderr);
-}
-
-/* }}} */
-
-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_select(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) {
- if (process_srs(srs, domain, srsd) < 0) {
- srsd_delete(&srsd);
- continue;
- }
- if (srsd->obuf.len) {
- epoll_register(srsd->fd, EPOLLIN | EPOLLOUT, srsd);
- }
- }
-
- if ((evts[n].events & EPOLLOUT) && srsd->obuf.len) {
- if (buffer_write(&srsd->obuf, srsd->fd) < 0) {
- srsd_delete(&srsd);
- continue;
- }
- if (!srsd->obuf.len) {
- epoll_modify(srsd->fd, EPOLLIN, srsd);
- }
- }
- }
+ if (config.srs) {
+ srs_free(config.srs);
+ config.srs = NULL;
}
-
- return EXIT_SUCCESS;
}
+module_exit(config_shutdown);
+
static srs_t *srs_read_secrets(const char *sfile)
{
srs_t *srs;
return NULL;
}
+/* administrivia {{{1
+ */
+
+void usage(void)
+{
+ fputs("usage: "DAEMON_NAME" [options] domain secrets\n"
+ "\n"
+ "Options:\n"
+ " -e <port> port to listen to for encoding requests\n"
+ " (default: "STR(DEFAULT_ENCODER_PORT)")\n"
+ " -d <port> port to listen to for decoding requests\n"
+ " (default: "STR(DEFAULT_DECODER_PORT)")\n"
+ " -p <pidfile> file to write our pid to\n"
+ " -u unsafe mode: don't drop privilegies\n"
+ " -f stay in foreground\n"
+ , stderr);
+}
+
+/* }}}
+ */
+
int main(int argc, char *argv[])
{
bool unsafe = false;
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; ) {
switch (c) {
case 'e':
return EXIT_FAILURE;
}
- srs = srs_read_secrets(argv[optind + 1]);
- if (!srs) {
- return EXIT_FAILURE;
- }
-
- if (pidfile_open(pidfile) < 0) {
- syslog(LOG_CRIT, "unable to write pidfile %s", pidfile);
- return EXIT_FAILURE;
- }
-
- if (!unsafe && drop_privileges(RUNAS_USER, RUNAS_GROUP) < 0) {
- syslog(LOG_CRIT, "unable to drop privileges");
- return EXIT_FAILURE;
- }
-
- if (daemonize && daemon_detach() < 0) {
- syslog(LOG_CRIT, "unable to fork");
+ config.domain = argv[optind];
+ config.srs = srs_read_secrets(argv[optind + 1]);
+ if (!config.srs
+ || common_setup(pidfile, unsafe, RUNAS_USER, RUNAS_GROUP,
+ daemonize) != EXIT_SUCCESS
+ || start_listener(port_enc, false) < 0
+ || start_listener(port_dec, true) < 0) {
return EXIT_FAILURE;
}
-
- pidfile_refresh();
- res = main_loop(srs, argv[optind], port_enc, port_dec);
- syslog(LOG_INFO, "Stopping...");
- return res;
+ return server_loop(srsd_starter, NULL, process_srs, &config);
}
projects / apps / pfixtools.git / blobdiff