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/**********************************************************************
* cgilibcso.c -- libcgi portion for finger/CSO stuff
*
* Copyright 1994 by the Massachusetts Institute of Technology
* For copying and distribution information, please see the file
* <mit-copyright.h>.
**********************************************************************/
#include "mit-copyright.h"
#define CGI_FINGER_MAX 32768
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <ctype.h>
#include "cgi.h"
#include "cgicso.h"
char *
cgi_next_line_in_string(string, linebuf, linebuflen)
char *string, *linebuf;
int linebuflen;
{
char *ptr;
ptr=strchr(string, '\n');
if (ptr)
{
int linelen;
linelen = ptr - string;
if (linelen >= linebuflen) linelen = linebuflen-1;
strncpy(linebuf, string, linelen);
linebuf[linelen]='\0';
return(ptr+1);
}
strncpy(linebuf, string, linebuflen);
return((char *)0);
}
/* returns 1 if field found, 0 otherwise */
/* fills in valuebuf with field value on match */
int
cgi_cso_field(linebuf, fieldname, valuebuf, buflen)
char *linebuf, *fieldname, *valuebuf;
int buflen;
{
char *ptr;
ptr=strchr(linebuf, ':');
if (!ptr) return(0); /* not of form name: value */
/* check if field name matches */
if (strncmp(fieldname, ptr-strlen(fieldname), strlen(fieldname)))
return(0); /* doesn't match */
/* match! */
strncpy(valuebuf, ptr+2, buflen);
return(1);
}
void
cgi_cso_header(formp, query)
cgi_form *formp;
char *query;
{
#ifdef CSOHEADER
char buf[BUFSIZ];
int nbytes;
#endif
/* print top of HTML doc */
puts("Content-Type: text/html\n");
#ifdef CSOHEADER
/* First try filling a template file; must contain [query] */
if (!cgi_template_fill(formp, CSOHEADER))
{
rewind(formp->tmpf);
do {
if ((nbytes = fread(buf, sizeof(char), BUFSIZ, formp->tmpf)) > 0)
fwrite(buf, sizeof(char), nbytes, stdout);
} while (nbytes == BUFSIZ);
return;
}
#endif
fputs("<HEAD><TITLE>Results of directory query: \"", stdout);
fputs(query, stdout);
puts("\"</TITLE></HEAD>");
fputs("<BODY><H1>Results of directory query: \"", stdout);
fputs(query, stdout);
puts("\"</H1>");
return;
/* be sure to close </BODY> */
}
void
cgi_cso_footer()
{
#ifdef CSOFOOTER
FILE *fp;
char buf[BUFSIZ];
int nbytes;
/* Try to open CSOFOOTER and dump contents to stdout. */
if (0 != (fp=fopen(CSOFOOTER, "r")))
{
do {
if ((nbytes = fread(buf, sizeof(char), BUFSIZ, fp)) > 0)
fwrite(buf, sizeof(char), nbytes, stdout);
} while (nbytes == BUFSIZ);
fclose(fp);
return;
}
#endif
puts("</BODY>");
return;
}
void
cgi_url_print(linebuf)
char linebuf[];
{
/* Look for URL field or any field like http://... */
if (!strncmp(linebuf, " url:", 11) || strstr(linebuf, "://"))
{
char *ptr1;
fwrite(linebuf, 1, 12, stdout);
/* make the URL into a hyperlink */
fputs("<a href=\"", stdout);
for(ptr1=linebuf+12; *ptr1 && !isspace(*ptr1); ptr1++)
putchar((int) *ptr1);
fputs("\">", stdout);
fwrite(linebuf+12, 1, ptr1-(linebuf+12), stdout);
fputs("</a>", stdout);
/* print the rest of the line */
puts(ptr1);
}
else puts(linebuf);
return;
}
int
cgi_standard_cso()
{
cgi_form form;
char *query, fingerbuf[CGI_FINGER_MAX], *ptr;
char linebuf[256], namebuf[256], deptbuf[256],
aliasbuf[256], titlebuf[256], yearbuf[256], emailbuf[256];
int i, fieldlen, motdlen=0;
char *fingerhost;
if (cgi_alloc_form(&form) ||
cgi_parse_form(&form))
{
cgi_output_failure(&form, "Request was not processed due to an error.");
cgi_free_form(&form);
return(1);
}
query=cgi_value(&form, "query");
#ifdef CGI_CSO_HARDCODE
fingerhost=CGI_CSO_FINGERHOST;
#else
/* make sure form has required values */
fingerhost=cgi_value(&form, "fingerhost");
if (!*fingerhost)
{
form.errcond=1;
strcpy(form.errmsg, "400 Required field missing: fingerhost");
cgi_output_failure(&form, "Request was not processed due to an error.");
cgi_free_form(&form);
return(1);
}
#endif
/* get info from finger */
if (finger(query, fingerhost, fingerbuf, CGI_FINGER_MAX) < 0)
{
form.errcond=1;
sprintf(form.errmsg, "500 Could not finger %s@%s", query, fingerhost);
cgi_concat_errno(form.errmsg);
cgi_output_failure(&form, "Request was not processed due to an error.");
cgi_free_form(&form);
return(1);
}
cgi_fix_crlf(fingerbuf);
/* go through query looking for "There were NN matches" */
ptr=fingerbuf;
while ((ptr=cgi_next_line_in_string(ptr, linebuf, 256)) != (char *)0)
{
if (!strncmp(linebuf, "There were ", 11)) break;
motdlen = ptr - fingerbuf;
}
/* not found -- print results with special handling of certain fields */
if (!ptr)
{
cgi_cso_header(&form, query);
linebuf[0]='\0';
ptr=strstr(fingerbuf, "There was 1 match to your request");
if (!ptr) ptr = fingerbuf;
motdlen = ptr - fingerbuf;
if (motdlen) ptr=cgi_next_line_in_string(ptr, linebuf, 256);
printf("<p>%s</p>\n<PRE>", linebuf);
while ((ptr=cgi_next_line_in_string(ptr, linebuf, 256)) != (char *)0)
{
/* Skip alias field */
if (cgi_cso_field(linebuf, "alias", aliasbuf, 256))
continue;
/* make mailto: for known email address */
if (cgi_cso_field(linebuf, "email", emailbuf, 256)
&& strcmp(emailbuf, "Unknown"))
{
printf("%10s: <A HREF=\"mailto:%s\">%s</A>\n", "email",
emailbuf, emailbuf);
continue;
}
/* make hyperlink if appropriate; otherwise print the line */
cgi_url_print(linebuf);
}
}
else
{
/* found -- print nice HTML list of matches */
deptbuf[0] = '\0'; /* no dept. found yet */
cgi_cso_header(&form, query);
printf("<p>%s</p>\n<PRE>", linebuf);
while ((ptr=cgi_next_line_in_string(ptr, linebuf, 256)) != (char *)0)
{
if (cgi_cso_field(linebuf, "department", deptbuf, 256)) continue;
if (cgi_cso_field(linebuf, "name", namebuf, 256)) continue;
if (cgi_cso_field(linebuf, "title", titlebuf, 256)) continue;
if (cgi_cso_field(linebuf, "year", yearbuf, 256)) continue;
if (cgi_cso_field(linebuf, "alias", aliasbuf, 256))
{
/* put hyperlink to more specific query */
fputs("<A HREF=\"", stdout);
fputs(getenv("SCRIPT_NAME"), stdout);
fputs("?query=alias%3D", stdout);
fputs(aliasbuf, stdout);
fputs("\">", stdout);
fputs(namebuf, stdout);
/* put periods up to next field */
fputs("</A>...", stdout);
fieldlen = 24-strlen(namebuf);
for(i=0; i<fieldlen; i++) putchar((int) '.');
/* put "dept, year n", "dept", or "Year n" as appropriate */
/* fall back on "title" if available */
if (*deptbuf)
{
if (*yearbuf)
{
fputs(deptbuf, stdout);
fputs(", year ", stdout);
puts(yearbuf);
}
else puts(deptbuf);
}
else
if (*yearbuf)
{
fputs("Year ", stdout);
puts(yearbuf);
}
else
if (*titlebuf) puts(titlebuf);
else puts("");
deptbuf[0] = titlebuf[0] = yearbuf[0] = '\0';
}
}
}
puts("</PRE>");
fwrite(fingerbuf, sizeof(char), motdlen, stdout);
cgi_cso_footer();
return(0);
}
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