2 * Copyright (c) 1995, the EUROPAGATE consortium (see below).
4 * The EUROPAGATE consortium members are:
6 * University College Dublin
7 * Danmarks Teknologiske Videnscenter
8 * An Chomhairle Leabharlanna
9 * Consejo Superior de Investigaciones Cientificas
11 * Permission to use, copy, modify, distribute, and sell this software and
12 * its documentation, in whole or in part, for any purpose, is hereby granted,
15 * 1. This copyright and permission notice appear in all copies of the
16 * software and its documentation. Notices of copyright or attribution
17 * which appear at the beginning of any file must remain unchanged.
19 * 2. The names of EUROPAGATE or the project partners may not be used to
20 * endorse or promote products derived from this software without specific
21 * prior written permission.
23 * 3. Users of this software (implementors and gateway operators) agree to
24 * inform the EUROPAGATE consortium of their use of the software. This
25 * information will be used to evaluate the EUROPAGATE project and the
26 * software, and to plan further developments. The consortium may use
27 * the information in later publications.
29 * 4. Users of this software agree to make their best efforts, when
30 * documenting their use of the software, to acknowledge the EUROPAGATE
31 * consortium, and the role played by the software in their work.
33 * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT WARRANTY OF ANY KIND,
34 * EXPRESS, IMPLIED, OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
35 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
36 * IN NO EVENT SHALL THE EUROPAGATE CONSORTIUM OR ITS MEMBERS BE LIABLE
37 * FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF
38 * ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA
39 * OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND
40 * ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
41 * USE OR PERFORMANCE OF THIS SOFTWARE.
44 * Revision 1.2 1995/10/27 17:30:16 adam
45 * First search request/response that works.
47 * Revision 1.1 1995/10/27 15:12:08 adam
48 * IrTcl incorporated in the gateway.
49 * Better separation of script types.
50 * Z39.50 gateway scripts entered.
58 #include <sys/types.h>
60 #include <sys/select.h>
69 static void *do_create (WCLIENT wcl, void *args);
70 static int do_exec (const char *fname, char *parms, void *mydata);
72 static struct w_interp_type w_interp_t = {
78 W_Interp_Type w_interp_irtcl = &w_interp_t;
81 static char *mod = "wirtcl";
90 /* select(2) callbacks */
92 void (*r_handle)(ClientData);
93 void (*w_handle)(ClientData);
94 void (*x_handle)(ClientData);
97 #define MAX_CALLBACK 200
99 static struct callback callback_table[MAX_CALLBACK];
100 static int max_fd = 3; /* don't worry: it will grow... */
102 static void *do_create (WCLIENT wcl, void *args)
107 if (!(p = malloc (sizeof(*p))))
109 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "malloc: irtcl_info");
112 if (!(p->w_interp = w_interp_create (w_interp_tcl, wcl, NULL)))
114 gw_log (GW_LOG_FATAL, mod, "Cannot make Tcl_Interp");
118 p->interp = w_interp_tcl_get (p->w_interp);
119 if (Irtcl_Init(p->interp) == TCL_ERROR)
121 gw_log (GW_LOG_FATAL, mod, "Cannot make Irtcl_Interp");
124 /* initialize irtcl */
125 for (i=0; i<MAX_CALLBACK; i++)
127 callback_table[i].r_handle = NULL;
128 callback_table[i].w_handle = NULL;
129 callback_table[i].x_handle = NULL;
135 static int do_exec (const char *fname, char *parms, void *mydata)
137 struct tcl_info *p = mydata;
138 int i, r, min_fd = 0;
140 static fd_set fdset_tcl_r;
141 static fd_set fdset_tcl_w;
142 static fd_set fdset_tcl_x;
144 if ((r = w_interp_exec (p->w_interp, fname, parms)))
148 FD_ZERO (&fdset_tcl_r);
149 FD_ZERO (&fdset_tcl_w);
150 FD_ZERO (&fdset_tcl_x);
152 if ((cp=Tcl_GetVar (p->interp, "sessionWait", 0)) && !strcmp (cp, "0"))
154 for (r=0, i=min_fd; i<=max_fd; i++)
156 if (callback_table[i].w_handle)
158 FD_SET (i, &fdset_tcl_w);
161 if (callback_table[i].r_handle)
163 FD_SET (i, &fdset_tcl_r);
166 if (callback_table[i].x_handle)
168 FD_SET (i, &fdset_tcl_x);
174 if ((r = select(max_fd+1, &fdset_tcl_r, &fdset_tcl_w,
175 &fdset_tcl_x, 0)) < 0)
182 for (i=min_fd; i<=max_fd; i++)
184 if (FD_ISSET (i, &fdset_tcl_r))
186 assert (callback_table[i].r_handle);
187 (*callback_table[i].r_handle) (callback_table[i].obj);
189 if (FD_ISSET (i, &fdset_tcl_w))
191 assert (callback_table[i].w_handle);
192 (*callback_table[i].w_handle) (callback_table[i].obj);
194 if (FD_ISSET (i, &fdset_tcl_x))
196 assert (callback_table[i].x_handle);
197 (*callback_table[i].x_handle) (callback_table[i].obj);
204 void ir_select_add (int fd, void *obj)
206 callback_table[fd].obj = obj;
207 callback_table[fd].r_handle = ir_select_read;
208 callback_table[fd].w_handle = NULL;
209 callback_table[fd].x_handle = NULL;
214 void ir_select_add_write (int fd, void *obj)
216 callback_table[fd].w_handle = ir_select_write;
221 void ir_select_remove_write (int fd, void *obj)
223 callback_table[fd].w_handle = NULL;
226 void ir_select_remove (int fd, void *obj)
228 callback_table[fd].r_handle = NULL;
229 callback_table[fd].w_handle = NULL;
230 callback_table[fd].x_handle = NULL;