Use AM_LDFLAGS instead of LDFLAGS
[yazpp-moved-to-github.git] / src / yaz-proxy-main.cpp
index 9b7ffc5..4a7a9b7 100644 (file)
@@ -1,10 +1,15 @@
 /*
- * Copyright (c) 1998-2001, Index Data.
+ * Copyright (c) 1998-2004, Index Data.
  * See the file LICENSE for details.
  * 
- * $Id: yaz-proxy-main.cpp,v 1.18 2002-10-23 10:15:18 adam Exp $
+ * $Id: yaz-proxy-main.cpp,v 1.30 2004-01-12 22:35:26 adam Exp $
  */
 
+#include <signal.h>
+#include <unistd.h>
+#include <pwd.h>
+#include <sys/types.h>
+
 #include <yaz/log.h>
 #include <yaz/options.h>
 
 
 void usage(char *prog)
 {
-    fprintf (stderr, "%s: [-a log] [-c num] [-v level] [-t target] [-i sec] "
-             "[-u auth] [-o optlevel] @:port\n", prog);
+    fprintf (stderr, "%s: [-c config] [-l log] [-a log] [-v level] [-t target] "
+             "[-u uid] [-p pidfile] @:port\n", prog);
     exit (1);
 }
 
+static char *pid_fname = 0;
+static char *uid = 0;
+static char *log_file = 0;
+static int debug = 0;
 
 int args(Yaz_Proxy *proxy, int argc, char **argv)
 {
@@ -27,8 +36,10 @@ int args(Yaz_Proxy *proxy, int argc, char **argv)
     char *prog = argv[0];
     int ret;
 
-    while ((ret = options("o:a:t:v:c:u:i:", argv, argc, &arg)) != -2)
+    while ((ret = options("o:a:t:v:c:u:i:m:l:T:p:U:X",
+                         argv, argc, &arg)) != -2)
     {
+       int err;
         switch (ret)
         {
         case 0:
@@ -39,13 +50,26 @@ int args(Yaz_Proxy *proxy, int argc, char **argv)
            }
            addr = arg;
             break;
+       case 'c':
+           err = proxy->set_config(arg);
+           if (err == -2)
+           {
+               fprintf(stderr, "Config file support not enabled (proxy not compiled with libxml2 support)\n");
+               exit(1);
+           }
+           else if (err == -1)
+           {
+               fprintf(stderr, "Bad or missing file %s\n", arg);
+               exit(1);
+           }
+           break;
        case 'a':
            proxy->set_APDU_log(arg);
            break;
         case 't':
-           proxy->set_proxy_target(arg);
+           proxy->set_default_target(arg);
            break;
-        case 'u':
+        case 'U':
             proxy->set_proxy_authentication(arg);
             break;
         case 'o':
@@ -54,11 +78,29 @@ int args(Yaz_Proxy *proxy, int argc, char **argv)
        case 'v':
            yaz_log_init_level (yaz_log_mask_str(arg));
            break;
-       case 'c':
+       case 'l':
+           yaz_log_init_file (arg);
+           log_file = xstrdup(arg);
+           break;
+       case 'm':
            proxy->set_max_clients(atoi(arg));
            break;
         case 'i':
-           proxy->set_idletime(atoi(arg));
+           proxy->set_client_idletime(atoi(arg));
+           break;
+        case 'T':
+           proxy->set_target_idletime(atoi(arg));
+           break;
+       case 'X':
+           debug = 1;
+           break;
+       case 'p':
+           if (!pid_fname)
+               pid_fname = xstrdup(arg);
+           break;
+       case 'u':
+           if (!uid)
+               uid = xstrdup(arg);
            break;
         default:
            usage(prog);
@@ -67,7 +109,11 @@ int args(Yaz_Proxy *proxy, int argc, char **argv)
     }
     if (addr)
     {
-       proxy->server(addr);
+       if (proxy->server(addr))
+       {
+           yaz_log(LOG_FATAL|LOG_ERRNO, "listen %s", addr);
+           exit(1);
+       }
     }
     else
     {
@@ -77,14 +123,142 @@ int args(Yaz_Proxy *proxy, int argc, char **argv)
     return 0;
 }
 
+static Yaz_Proxy *static_yaz_proxy = 0;
+static void sighup_handler(int num)
+{
+    signal(SIGHUP, sighup_handler);
+    if (static_yaz_proxy)
+       static_yaz_proxy->reconfig();
+}
+
+
+static void child_run(Yaz_SocketManager *m, int run)
+{
+    signal(SIGHUP, sighup_handler);
+
+    yaz_log(LOG_LOG, "0 proxy run=%d pid=%ld", run, (long) getpid());
+    if (pid_fname)
+    {
+       FILE *f = fopen(pid_fname, "w");
+       if (!f)
+       {
+           yaz_log(LOG_ERRNO|LOG_FATAL, "Couldn't create %s", pid_fname);
+           exit(0);
+       }
+       fprintf(f, "%ld", (long) getpid());
+       fclose(f);
+       xfree(pid_fname);
+    }
+    if (uid)
+    {
+       struct passwd *pw;
+
+       if (!(pw = getpwnam(uid)))
+       {
+           yaz_log(LOG_FATAL, "%s: Unknown user", uid);
+           exit(3);
+       }
+       if (log_file)
+       {
+           chown(log_file, pw->pw_uid,  pw->pw_gid);
+           xfree(log_file);
+       }
+
+       if (setuid(pw->pw_uid) < 0)
+       {
+           yaz_log(LOG_FATAL|LOG_ERRNO, "setuid");
+           exit(4);
+       }
+       xfree(uid);
+    }
+
+    while (m->processEvent() > 0)
+       ;
+
+    exit (0);
+}
+
 int main(int argc, char **argv)
 {
+#if HAVE_XSLT
+    xmlInitMemory();
+    
+    LIBXML_TEST_VERSION
+#endif
+    int cont = 1;
+    int run = 1;
     Yaz_SocketManager mySocketManager;
     Yaz_Proxy proxy(new Yaz_PDU_Assoc(&mySocketManager));
 
+    static_yaz_proxy = &proxy;
+
     args(&proxy, argc, argv);
-    while (mySocketManager.processEvent() > 0)
-       ;
+
+    if (debug)
+    {
+       child_run(&mySocketManager, run);
+       exit(0);
+    }
+    while (cont)
+    {
+       pid_t p = fork();
+       if (p == (pid_t) -1)
+       {
+           yaz_log(LOG_FATAL|LOG_ERRNO, "fork");
+           exit(1);
+       }
+       else if (p == 0)
+       {
+           child_run(&mySocketManager, run);
+       }
+       pid_t p1;
+       int status;
+       p1 = wait(&status);
+
+       yaz_log_reopen();
+
+       if (p1 != p)
+       {
+           yaz_log(LOG_FATAL, "p1=%d != p=%d", p1, p);
+           exit(1);
+       }
+       if (WIFSIGNALED(status))
+       {
+           switch(WTERMSIG(status)) {
+           case SIGILL:
+               yaz_log(LOG_WARN, "Received SIGILL from child %ld", (long) p);
+               cont = 1;
+               break;
+           case SIGABRT:
+               yaz_log(LOG_WARN, "Received SIGABRT from child %ld", (long) p);
+               cont = 1;
+               break ;
+           case SIGSEGV:
+               yaz_log(LOG_WARN, "Received SIGSEGV from child %ld", (long) p);
+               cont = 1;
+               break;
+           case SIGTERM:
+               yaz_log(LOG_LOG, "Received SIGTERM from child %ld",
+                       (long) p);
+               cont = 0;
+               break;
+           default:
+               yaz_log(LOG_WARN, "Received SIG %d from child %ld",
+                       WTERMSIG(status), (long) p);
+               cont = 0;
+           }
+       }
+       else if (status == 0)
+           cont = 0;
+       else
+       {
+           yaz_log(LOG_LOG, "Exit %d from child %ld", status, (long) p);
+           cont = 1;
+       }
+       if (cont)
+           sleep(1);
+       run++;
+    }
     exit (0);
     return 0;
 }