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 1.9 1995/11/14 16:31:36 adam
45 * Temporary remove of ccl entry.
47 * Revision 1.8 1995/11/13 15:41:45 adam
49 * Gateway uses record element set names B(rief) and F(ull).
50 * Bug fix. Didn't save idAuthentication correctly.
52 * Revision 1.7 1995/11/10 14:47:32 adam
53 * Plus (+) characters automatically converted to space in forms.
54 * Work on search in multiple targets. Doesn't work well - yet.
55 * Presentation formats enhanced.
57 * Revision 1.6 1995/11/06 10:51:17 adam
58 * End of response marker in response from wsh/wproto to wcgi.
59 * Shells are respawned when necessary.
61 * Revision 1.5 1995/11/02 16:35:37 adam
62 * Bug fixes and select on FIFOs in wcgi - doesn't really work!
64 * Revision 1.4 1995/10/31 16:56:25 adam
65 * Record presentation.
67 * Revision 1.3 1995/10/27 15:12:10 adam
68 * IrTcl incorporated in the gateway.
69 * Better separation of script types.
70 * Z39.50 gateway scripts entered.
72 * Revision 1.2 1995/10/23 16:55:39 adam
73 * A lot of changes - really.
75 * Revision 1.1 1995/10/20 11:49:26 adam
76 * First version of www gateway.
84 #include <sys/types.h>
94 static int wproto_dumpcache(WCLIENT wc, int level);
95 static int wproto_findcache(WCLIENT wc, char *name);
96 static void wproto_uncache(WCLIENT wc, int level);
98 static char *mod = "wproto";
100 void wo_write (WCLIENT wc, const char *s, size_t len)
102 if (wc->outbuffer_offset + len >= wc->outbuffer_size)
103 wc->outbuffer = realloc(wc->outbuffer, wc->outbuffer_size +=
105 memcpy(wc->outbuffer + wc->outbuffer_offset, s, len);
106 wc->outbuffer_offset += len;
109 void wo_puts (WCLIENT wc, const char *s)
111 wo_write (wc, s, strlen(s));
114 void wo_printf (WCLIENT wc, const char *fmt, ...)
120 vsprintf(tmpbuf, fmt, ap);
125 void wo_clear (WCLIENT wc, char *type)
128 wc->outbuffer = malloc(wc->outbuffer_size = OUTBUFFER_CHUNK);
129 wc->outbuffer_offset = 0;
130 wo_printf(wc, "Content-type: %s\n\n", type);
133 int wo_puthtml (WCLIENT wc, char *name)
138 wo_clear(wc, "text/html");
139 if (!(f = fopen(name, "r")))
141 wo_printf(wc, "<BR>Failed to open file: %s<BR>", name);
144 while (ch = getc(f), !feof(f))
146 if (wo_putc(wc, ch) < 0)
156 int wo_flush(WCLIENT wc)
160 if (!(wc->outbuffer_offset))
162 towrite = wc->outbuffer_offset;
163 wc->outbuffer_offset = 0;
169 wrote = write(wc->lineout, wc->outbuffer + wc->outbuffer_offset,
173 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "write response");
176 gw_log (GW_LOG_DEBUG, mod, "wrote %d bytes", wrote);
177 if (wc->cache_fd >= 0)
178 if (write(wc->cache_fd, wc->outbuffer + wc->outbuffer_offset,
181 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "write cache");
187 wc->outbuffer_offset += wrote;
189 wc->outbuffer_offset = 0;
193 int wo_overflow(WCLIENT wc, char ch)
195 gw_log (GW_LOG_DEBUG, mod, "wo_overflow");
196 if (wo_flush(wc) < 0)
198 return wo_putc(wc, ch);
201 int wo_finish(WCLIENT wc)
203 gw_log (GW_LOG_DEBUG, mod, "wo_finish");
206 if (wo_flush(wc) < 0)
210 if (wc->cache_fd >= 0)
218 static void descramble(char *t, const char *o)
224 if (*o == '%' && isxdigit(*(o + 1)) && isxdigit(*(o + 2)))
226 sscanf(o + 1, "%2x", &v);
247 static void decode_form(wform_data *form, char *buf)
255 for (p = form[i].name; *buf && *buf != '='; buf++)
260 for (p = tmp; *buf && *buf != '&'; buf++)
263 descramble(form[i].value, tmp);
268 *form[i].name = '\0';
271 char *wgetval(WCLIENT wc, char *name)
275 for (i = 0; *wc->wf_data[i].name; i++)
276 if (!strcmp(name, wc->wf_data[i].name))
277 return wc->wf_data[i].value;
281 int wproto_process(WCLIENT wc, int timeout)
283 int toread, rs, level;
284 char combuf[COMBUF], *p,*t;
286 struct timeval to, *top;
290 gw_log (GW_LOG_DEBUG, mod, "process waiting for input.");
300 FD_SET(wc->linein, &input);
301 /* go through select handle list */
302 while ((rs = select(wc->linein + 1, &input, 0, 0, top)) < 0 &&
307 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "select");
312 gw_log (GW_LOG_STAT, mod,
313 "wproto_process returning 0 after %d second timeout.",
315 unlink (wc->wf_serverp);
318 /* determine handle (fifo or user) */
319 if (read(wc->linein, &toread, sizeof(toread)) < sizeof(toread))
321 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "wp_proc:len read failed");
324 toread -= sizeof(toread);
325 if (read(wc->linein, combuf, toread) < toread)
327 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "wp_proc: data read failed");
331 for (t = wc->wf_serverp; (*t = *p); t++, p++);
333 for (t = wc->wf_parms; (*t = *p); t++, p++);
335 p++; /* we don't deal with envvars yet */
336 decode_form(wc->wf_data, p);
337 if (wc->lineout < 0 && (wc->lineout = open(wc->wf_serverp, O_WRONLY))
340 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "open %s", wc->wf_serverp);
343 /* look in cache only if request carries no forms data. */
344 if (!*wc->wf_data[0].name && (level = wproto_findcache(wc,
347 wproto_dumpcache(wc, level);
357 WCLIENT wproto_init(void)
359 char *val, path2[256];
362 gw_log (GW_LOG_DEBUG, mod, "wproto_init");
363 close(1); /* release us from the wserver */
364 if (!(new = malloc(sizeof(*new))))
366 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "malloc");
369 if (!(val = getenv ("GWID")))
371 gw_log (GW_LOG_FATAL, mod, "GWID not set");
374 new->id = atoi (val);
375 sprintf(new->path, "%s/%s/clt%d", FIFOROOT, FIFODIR, new->id);
376 if (mkfifo(new->path, 0666 | S_IFIFO) < 0)
377 gw_log (GW_LOG_WARN|GW_LOG_ERRNO, mod, "mkfifo(%s)", new->path);
378 gw_log (GW_LOG_DEBUG, mod, "Synchronizing with server.");
379 sprintf(path2, "%s/%s/srv%d", FIFOROOT, FIFODIR, getppid());
380 if ((new->lineout = open(path2, O_WRONLY)) < 0)
382 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "open out %s", path2);
385 if (write(new->lineout, "OK", 2) < 2)
387 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "write");
390 gw_log (GW_LOG_DEBUG, mod, "Synchronized.");
391 if ((new->linein = open(new->path, O_RDONLY)) < 0)
393 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "open input %s", new->path);
396 gw_log (GW_LOG_DEBUG, mod, "init. linein=%d lineout=%d",
397 new->linein, new->lineout);
398 /* we put a handle on this so we get a blocking read when no peer */
399 if (open(new->path, O_WRONLY | O_NDELAY) < 0)
401 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "open dummy %s", new->path);
405 new->cache_level = -1;
410 static void wproto_uncache(WCLIENT wc, int level)
412 for (;wc->cache_level >= level; wc->cache_level--)
413 unlink(wc->cache[wc->cache_level].path);
416 void wproto_terminate(WCLIENT wc)
420 wproto_uncache(wc, 0);
424 int wproto_cache(WCLIENT wc, int level)
428 if (level > wc->cache_level + 1)
430 gw_log (GW_LOG_FATAL, mod, "Illegal cache level increment.");
433 wproto_uncache(wc, level);
434 p = &wc->cache[++wc->cache_level];
435 sprintf(p->path, "%s/%s/csh%d.%d", FIFOROOT, FIFODIR, wc->id, level);
436 if ((wc->cache_fd = open(p->path, O_WRONLY|O_CREAT|O_TRUNC, 0600)) < 0)
438 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "open %s", p->path);
441 strcpy(p->name, wc->wf_parms);
445 static int wproto_findcache(WCLIENT wc, char *name)
449 for (i = 0; i <= wc->cache_level; i++)
450 if (!strcmp(wc->cache[i].name, name))
455 static int wproto_dumpcache(WCLIENT wc, int level)
459 gw_log (GW_LOG_STAT, mod, "Using Cache: %s", wc->cache[level].name);
460 if ((fd = open(wc->cache[level].path, O_RDONLY)) < 0)
462 gw_log (GW_LOG_FATAL, mod, "open (R) %s", wc->cache[level].path);
465 while ((rd = read(fd, wc->outbuffer, OUTBUFFER_CHUNK)) > 0)
466 if (write(wc->lineout, wc->outbuffer, rd) < rd)
468 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "write toline");
473 gw_log (GW_LOG_FATAL|GW_LOG_ERRNO, mod, "read");
476 wproto_uncache(wc, level + 1);