X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=kernel%2Fmain.c;h=fd6ef7ef2ca07ce6761d17a0ce13c1d277c243b7;hb=43c5b3372d7c17b2c196e90115fb6058b813b003;hp=c3e4f6555402e4f216d72a01f86fa62f33b8ff25;hpb=f6a107777079379b767452dc6ade3f56272af49e;p=egate.git

diff --git a/kernel/main.c b/kernel/main.c
index c3e4f65..fd6ef7e 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -2,7 +2,48 @@
  * Europagate, 1995
  *
  * $Log: main.c,v $
- * Revision 1.1  1995/02/15 17:45:29  adam
+ * Revision 1.13  1995/03/28 08:01:25  adam
+ * FIFO existence is used to test for a running kernel.
+ *
+ * Revision 1.12  1995/03/27  12:51:05  adam
+ * New log level in use: GW_LOG_ERRNO.
+ *
+ * Revision 1.11  1995/03/27  08:24:02  adam
+ * First use of gip interface and gw-db.
+ * First work on eti program.
+ *
+ * Revision 1.10  1995/03/01  14:32:25  adam
+ * Better diagnostics. Default is, that only one database selected when
+ * several are known.
+ *
+ * Revision 1.9  1995/02/23  08:32:17  adam
+ * Changed header.
+ *
+ * Revision 1.7  1995/02/22  15:22:33  adam
+ * Much more checking of run-time state. Show command never retrieves
+ * more records than indicated by the previous search request. Help
+ * command available. The maximum number of records retrieved can be
+ * controlled now.
+ *
+ * Revision 1.6  1995/02/22  08:51:34  adam
+ * Output function can be customized in fml, which is used to print
+ * the reply to reply_fd.
+ *
+ * Revision 1.5  1995/02/20  21:16:20  adam
+ * FML support. Bug fixes. Profile for drewdb.
+ *
+ * Revision 1.4  1995/02/17  17:06:16  adam
+ * Minor changes.
+ *
+ * Revision 1.3  1995/02/16  18:35:09  adam
+ * First use of Zdist library. Search requests are supported.
+ * Present requests are not supported yet.
+ *
+ * Revision 1.2  1995/02/16  13:21:00  adam
+ * Organization of resource files for targets and conversion
+ * language implemented.
+ *
+ * Revision 1.1  1995/02/15  17:45:29  adam
  * First version of email gateway kernel. Email requests are read
  * from stdin. The output is transferred to an MTA if 'From' is
  * found in the header - or stdout if absent. No Z39.50 client is used.
@@ -11,66 +52,450 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <fcntl.h>
 
+#include <gip.h>
 #include "kernel.h"
 
-GwRes kernel_res;
-CCL_bibset bibset;
 FILE *reply_fd = stdout;
 
+struct gw_kernel_info info;
+
+static void kernel_events (int userid)
+{
+    char fifo_client_name[1024];
+    char fifo_server_name[1024];
+    GIP gip;
+    fd_set set_r;
+    int r, gip_fd;
+    struct timeval tv;
+
+    gw_log (GW_LOG_DEBUG, KERNEL_LOG, "kernel event loop");
+
+    sprintf (fifo_client_name, "fifo.c.%d", userid);
+    sprintf (fifo_server_name, "fifo.s.%d", userid);
+
+    gip = gips_initialize (fifo_server_name);
+    gips_open (gip, fifo_client_name);
+    gip_fd = gip_infileno (gip);
+
+    while (1)
+    {
+        FD_ZERO (&set_r);
+	FD_SET (gip_fd, &set_r);
+        tv.tv_sec = 60;
+	tv.tv_usec = 0;
+
+	gw_log (GW_LOG_DEBUG, KERNEL_LOG, "IPC select");
+	r = select (gip_fd+1, &set_r, NULL, NULL, &tv);
+	if (r == -1)
+	{
+	    gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, KERNEL_LOG, "select");
+	    exit (1);
+	}
+	if (r == 0)
+	{
+	    gw_log (GW_LOG_STAT, KERNEL_LOG, "Timeout");
+	    break;
+	}
+	if (FD_ISSET (gip_fd, &set_r))
+	{
+            char command[128], *cp;
+
+	    if (!(lgets (command, 127, gip_fd)))
+	    {
+	        gw_log (GW_LOG_WARN, KERNEL_LOG, "Unexpected close");
+	        break;
+	    }
+	    if ((cp = strchr (command, '\n')))
+	        *cp = '\0';
+	    gw_log (GW_LOG_STAT, KERNEL_LOG, "IPC: %s", command);
+            if (!strcmp (command, "mail"))
+	    {
+	        gw_log (GW_LOG_DEBUG, KERNEL_LOG, "Incoming mail...\n");
+                urp (gip_fd);
+	    }
+	    else if (!strcmp (command, "stop"))
+	    {
+                gw_log (GW_LOG_DEBUG, KERNEL_LOG, "stop");
+		break;
+	    }
+	    else 
+	    {
+                gw_log (GW_LOG_WARN, KERNEL_LOG, "Unknown IPC: %s", command);
+	    }
+	}
+    }
+    gips_close (gip);
+    gips_destroy (gip);
+    unlink (fifo_client_name);
+    unlink (fifo_server_name);
+}
+
 int main (int argc, char **argv)
 {
-    char *bib_fname;
-    FILE *bib_inf;
+    int userid = -1;
+
+    info.kernel_res = NULL;
+    info.default_res = "default.res";
+    info.override_res = NULL;
+    *info.target = 0;
+    info.lang = NULL;
+    info.bibset = NULL;
+    info.zass = NULL;
+    info.override_portno = NULL;
+    info.override_hostname = NULL;
+    info.databases = NULL;
+    info.database = NULL;
+#if USE_FML
+    info.fml = NULL;
+#endif
+    info.sets = NULL;
 
     gw_log_init (*argv);
-    kernel_res = gw_res_init ();
-    bibset = ccl_qual_mk ();    
+    info.kernel_res = gw_res_init ();
     while (--argc > 0)
     {
         if (**++argv == '-')
         {
             switch (argv[0][1])
             {
-            case 'b':
+            case 'H':
+                fprintf (stderr, "kernel [option..] [resource]\n");
+                fprintf (stderr, "If no resource file is given");
+                fprintf (stderr, " default.res is used\n");
+                fprintf (stderr, "Options:\n");
+                fprintf (stderr, " -d           Enable debugging log\n");
+                fprintf (stderr, " -t target    Open target immediately\n");
+                fprintf (stderr, " -l lang      Set language\n");
+                fprintf (stderr, " -o resource  Override with resource\n");
+                fprintf (stderr, " -h host      Override host\n");
+                fprintf (stderr, " -p port      Override port\n");
+                fprintf (stderr, " -g log       Set Log file\n");
+                fprintf (stderr, " -i id        Set IPC userid\n");
+                exit (1);
+            case 'd':
+                gw_log_level (GW_LOG_ALL);
+                break;
+            case 't':
+                if (argv[0][2])
+                    strcpy (info.target, argv[0]+2);
+                else if (argc > 0)
+                {
+                    --argc;
+                    strcpy (info.target, *++argv);
+                }
+                else
+                {
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing target name");
+                    exit (1);
+                }
+                break;
+            case 'l':
                 if (argv[0][2])
-                    bib_fname = argv[0]+2;
+                    info.lang = argv[0]+2;
                 else if (argc > 0)
                 {
                     --argc;
-                    bib_fname = *++argv;
+                    info.lang = *++argv;
                 }
                 else
                 {
-                    gw_log (GW_LOG_FATAL, "main", "missing bib filename");
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing language name");
                     exit (1);
                 }
-                bib_inf = fopen (bib_fname, "r");
-                if (!bib_inf)
+                break;
+            case 'o':
+                if (argv[0][2])
+                    info.override_res = argv[0]+2;
+                else if (argc > 0)
+                {
+                    --argc;
+                    info.override_res = *++argv;
+                }
+                else
+                {
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing override name");
+                    exit (1);
+                }
+                break;
+            case 'p':
+                if (argv[0][2])
+                    info.override_portno = argv[0]+2;
+                else if (argc > 0)
+                {
+                    --argc;
+                    info.override_portno = *++argv;
+                }
+                else
+                {
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing portno");
+                    exit (1);
+                }
+                break;
+            case 'h':
+                if (argv[0][2])
+                    info.override_hostname = argv[0]+2;
+                else if (argc > 0)
+                {
+                    --argc;
+                    info.override_hostname = *++argv;
+                }
+                else
+                {
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing hostname");
+                    exit (1);
+                }
+                break;
+            case 'g':
+                if (argv[0][2])
+                    gw_log_file (GW_LOG_ALL, argv[0]+2);
+                else if (argc > 0)
+                {
+                    --argc;
+                    gw_log_file (GW_LOG_ALL, *++argv);
+                }
+                else
                 {
-                    gw_log (GW_LOG_FATAL, "main", "cannot open %s", bib_fname);
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing log filename");
                     exit (1);
                 }
-                ccl_qual_file (bibset, bib_inf);
-                fclose (bib_inf);
                 break;
+	    case 'i':
+                if (argv[0][2])
+		    userid = atoi (argv[0]+2);
+                else if (argc > 0)
+                {
+                    --argc;
+		    userid = atoi (*++argv);
+                }
+                else
+                {
+                    gw_log (GW_LOG_FATAL, KERNEL_LOG, "missing user id");
+		    exit (1);
+		}
+		break;
             default:
-                gw_log (GW_LOG_FATAL, "main", "unknown option %s", *argv);
+                gw_log (GW_LOG_FATAL, KERNEL_LOG, "unknown option %s", *argv);
                 exit (1);
             }
         }
         else
+            info.default_res = *argv;
+    }
+    read_kernel_res ();
+    if (userid != -1)
+        kernel_events (userid);
+    else
+        urp (0);
+    return 0;
+}
+
+struct gw_user_set *user_set_add (const char *name, int hits)
+{
+    struct gw_user_set *s;
+
+    s = malloc (sizeof (*s));
+    assert (s);
+
+    s->name = gw_strdup (name);
+    s->hits = hits;
+    s->prev = info.sets;
+    info.sets = s;
+    return s;
+}
+
+void user_set_init (void)
+{
+    struct gw_user_set *s, *s1;
+
+    for (s = info.sets; s; s = s1)
+    {
+        free (s->name);
+        s1 = s->prev;
+        free (s);
+    }
+    info.sets = NULL;
+}
+
+struct gw_user_set *user_set_search (const char *name)
+{
+    struct gw_user_set *s;
+
+    if (!name)
+        return info.sets;
+    for (s = info.sets; s; s = s->prev)
+        if (!strcmp (s->name, name))
+            return s;
+    return NULL;
+}
+
+#if USE_FML
+static void fml_inf_write (int ch)
+{
+    putc (ch, reply_fd);
+}
+static FILE *fml_inf;
+
+static int fml_inf_read (void)
+{
+    return getc (fml_inf);
+}
+#endif
+
+void read_kernel_res (void)
+{
+    char path_prefix[128];
+    char fname[160];
+    const char *v;
+    char *cp;
+    char resource_name[256];
+
+    user_set_init ();
+
+    if (info.bibset)
+        ccl_qual_rm (&info.bibset);
+    info.bibset = ccl_qual_mk ();
+
+    if (info.kernel_res)
+        gw_res_close (info.kernel_res);
+    info.kernel_res = gw_res_init ();
+
+    gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, default %s",
+            info.default_res);
+    if (*info.target)
+        gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, target %s",
+                info.target);
+    if (info.lang)
+        gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading kernel resource, lang %s",
+                info.lang);
+
+    if (gw_res_merge (info.kernel_res, info.default_res))
+    {
+        gw_log (GW_LOG_WARN, KERNEL_LOG, "Couldn't read resource file %s",
+                info.default_res);
+        return;
+    }
+    strcpy (path_prefix, gw_res_get (info.kernel_res, "gw.path", "."));
+    
+    if (*info.target)
+    {
+        sprintf (resource_name, "gw.target.%s", info.target);
+        v = gw_res_get (info.kernel_res, resource_name, NULL);
+        if (v)
+        {
+            sprintf (fname, "%s/%s", path_prefix, v);
+            gw_res_merge (info.kernel_res, fname);
+        }
+    }
+    if (info.lang)
+    {
+        sprintf (resource_name, "gw.lang.%s", info.lang);
+        v = gw_res_get (info.kernel_res, resource_name, NULL);
+        if (v)
+        {
+            sprintf (fname, "%s/%s", path_prefix, v);
+            gw_res_merge (info.kernel_res, fname);
+        }
+    }
+    if (info.override_res)
+    {
+        sprintf (fname, "%s/%s", path_prefix, info.override_res);
+        gw_res_merge (info.kernel_res, fname);        
+    }
+    v = gw_res_get (info.kernel_res, "gw.bibset", NULL);
+    if (v)
+    {
+        FILE *bib_inf;
+
+        sprintf (fname, "%s/%s", path_prefix, v);
+        bib_inf = fopen (fname, "r");
+        if (!bib_inf)
+            gw_log (GW_LOG_WARN, KERNEL_LOG, "cannot open %s", fname);
+        else
         {
-            int r;
-            r = gw_res_merge (kernel_res, *argv);
-            if (r)
-            {
-                gw_log (GW_LOG_FATAL, "main", "failed to read resource "
-                        "file %s", *argv);
-                exit (1);
-            }
+            gw_log (GW_LOG_DEBUG, KERNEL_LOG, "reading bib file %s", fname);
+            ccl_qual_file (info.bibset, bib_inf);
+            fclose (bib_inf);
         }
     }
-    urp (stdin);
-    return 0;
+    sprintf (resource_name, "gw.target.%s", info.target);
+    if (*info.target && ! gw_res_get (info.kernel_res, resource_name, NULL))
+    {
+        /* target is there, and there is no sub-resource for it... */
+        char *split;
+
+        if ((split = strchr (info.target, ':')))
+            *split++ = '\0';
+        strncpy (info.hostname, info.target, sizeof(info.hostname)-1);
+        if (split)
+            info.port = atoi (split);
+        else
+            info.port = atoi (gw_res_get
+                              (info.kernel_res, "gw.portno", "210"));
+    }
+    else
+    {
+        strncpy (info.hostname, gw_res_get (info.kernel_res,
+                                            "gw.hostname", "localhost"),
+                 sizeof(info.hostname)-1);
+        info.port = atoi (gw_res_get (info.kernel_res,
+                                      "gw.portno", "210"));
+    }
+    if (info.databases)
+        free (info.databases);
+    if (info.database)
+        free (info.database);
+    v = gw_res_get (info.kernel_res, "gw.databases", "");
+    info.databases = gw_strdup (v);
+    for (cp = info.databases; (cp = strchr (cp, ' ')); cp++)
+        *cp = ',';
+    v = gw_res_get (info.kernel_res, "gw.database", "");
+    if (*v == '\0' && *info.databases)
+    {
+        int len;
+        cp = strchr (info.databases, ',');
+        
+        len = cp ? (cp-info.databases) : strlen (info.databases);
+        info.database = malloc (len+1);
+        assert (info.database);
+        memcpy (info.database, info.databases, len);
+        info.database[len] = '\0';
+    }
+    else
+    {
+        info.database = gw_strdup (v);
+        for (cp = info.database; (cp = strchr (cp, ' ')); cp++)
+            *cp = ',';
+    }
+    if (info.override_portno)
+        info.port = atoi (info.override_portno);
+    if (info.override_hostname)
+        strncpy (info.hostname, info.override_hostname,
+                 sizeof(info.hostname)-1);
+#if USE_FML
+    if (!info.fml)
+    {
+        v = gw_res_get (info.kernel_res, "gw.fml", "default.fml");    
+        sprintf (fname, "%s/%s", path_prefix, v);
+        fml_inf = fopen (fname, "r");
+        if (!fml_inf)
+            gw_log (GW_LOG_WARN, KERNEL_LOG,
+                    "cannot open fml script %s", fname);
+        else
+        {
+            info.fml = fml_open ();
+            info.fml->read_func = fml_inf_read;
+            info.fml->write_func = fml_inf_write;
+            fml_preprocess (info.fml);
+            fml_exec (info.fml);
+            fclose (fml_inf);
+        }
+    }
+#endif
 }