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openldap/contrib/tweb/queries.c

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Initial revision
1999-09-11 01:33:39 +08:00
/*_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
* *
* queries.c.. *
* *
* Function:..WorldWideWeb-X.500-Gateway - Server-Functions *
* Based on web500gw.c 1.3 written by Frank Richter, TU Chemmniz *
* which is based on go500gw by Tim Howes, University of *
* Michigan - All rights reserved *
* *
* Authors:...Dr. Kurt Spanier & Bernhard Winkler, *
* Zentrum fuer Datenverarbeitung, Bereich Entwicklung *
* neuer Dienste, Universitaet Tuebingen, GERMANY *
* *
* ZZZZZ DDD V V *
* Creation date: Z D D V V *
* August 16 1995 Z D D V V *
* Last modification: Z D D V V *
Adopt TWEB to LDAP_API_VERSION >= 2003.
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* September 13 1999 ZZZZ DDD V *
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* *
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_*/
/*
Adopt TWEB to LDAP_API_VERSION >= 2003.
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* $Id: queries.c,v 1.8 1999/09/13 13:47:47 zrnsk01 Exp $
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*
*/
#include "queries.h"
PUBLIC void do_queries( s, glob , ip_addr, ip_port, hp)
int s;
GLOB_STRUCT *glob;
char *ip_addr;
unsigned int ip_port;
struct hostent *hp;
{
char buf[100*BUFSIZ], *query, *tail;
int len;
FILE *fp;
int rc, tblsize;
struct timeval timeout;
fd_set readfds;
LDAP *ld;
char tstring[100];
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 0
int ldap_opt;
#endif
Initial revision
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/* get time for performance log */
gettimeofday(&timestore[2], NULL);
/* open output-port to waiting client */
if ( (fp = fdopen( s, "a+")) == NULL ) {
perror( "fdopen" );
exit_tweb( 1 );
}
tblsize = getdtablesize();
timeout.tv_sec = glob->timeout;
timeout.tv_usec = 0;
FD_ZERO( &readfds );
FD_SET( fileno( fp ), &readfds );
time(&glob->nowtime);
time(&glob->expiretime);
if(glob->cache_expire) {
glob->expiretime += glob->cache_expire;
glob->caching =TRUE;
}
free(glob->nowtimestr);
free(glob->expiretimestr);
strftime(tstring, 99, GMT_FORMAT, gmtime(&glob->nowtime));
glob->nowtimestr = strdup(tstring);
strftime(tstring, 99, GMT_FORMAT2, gmtime(&glob->expiretime));
glob->expiretimestr = strdup(tstring);
/* get client-query out from the system */
if((rc=select(tblsize,(fd_set *)&readfds,NULL,NULL,&timeout))<=0)
exit_tweb( 1 );
if ( fgets( buf, sizeof(buf), fp ) == NULL )
exit_tweb( 1 );
/* Analyse Web-Client-Type / proxy + log-message */
checkwwwclient(fp, ip_addr, ip_port, hp, glob);
len = strlen( buf );
if ( debug ) {
fprintf( stderr, "got %d bytes\n", len );
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 2
ber_bprint( buf, len );
#else
Initial revision
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lber_bprint( buf, len );
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#endif
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}
/* strip of white spaces */
query = trim (buf, WSPACE);
rewind (fp);
/* strip "HTTP" from the end of the request */
if ((tail = strstr(query, " HTTP")) != NULL ||
(tail = strstr(query, " http")) != NULL) {
http = 1;
*tail = '\0';
}
/* recognize GET/HEAD */
if (!strncasecmp (query, "get", 3)) {
request = GET;
query += 3;
} else if (!strncasecmp (query, "head", 4)) {
request = HEAD;
query += 4;
} else {
/* Error because of neither GET- nor HEAD-request */
do_error(fp, -2, NOT_IMPLEMENTED, glob);
/* fprintf(fp, "HTTP/1.0 501 %s<br>", glob->la[5]); */
rewind(fp);
exit_tweb( 1 );
}
/* strip off leading white space and '/' */
while ( isspace( *query ) || *query == '/') {
++query;
}
/* Now the real request is to be analized and served */
/* refuse robots if according robots.txt file exists */
if (!strcasecmp(query, "robots.txt")){
if (http == 1) PRINT_PLAIN_HEADER;
disp_file(glob, ROBOTS_TXT_FILE, fp);
exit_tweb(0);
}
#ifdef TUE_TEL
if( glob->ton_urls && *query == cTON) {
if(!glob->ton_urls->admin)
glob->allowed = 0;
if(glob->ton_urls->pass_oc) {
glob->max_person = 10000;
glob->no_browse = FALSE;
}
}
#endif
decide_access(glob);
/* get time for performance log */
gettimeofday(&timestore[3], NULL);
/* perform handling of pulldown/form retcodes
-> gwswitch-redirect || pass */
if(*query == cPULLDOWN) {
if(strstr(query, "http")) {
/* redirection */
query += 4;
hex_decode(query);
PRINT_REDIRECT_HEADER;
PRINT_HTML_FOOTER;
exit_tweb(0);
} else {
/* pass */
query += 7;
hex_decode(query);
}
}
/* perform handling of buttons/form retcodes
-> gwswitch-redirect || pass */
if(*query == cBUTTON) {
char *strptr;
query += 2;
strptr = strrchr( query, '=' );
*strptr = '\0';
if(strstr(query, "http")) {
/* redirection */
hex_decode(query);
PRINT_REDIRECT_HEADER;
PRINT_HTML_FOOTER;
exit_tweb(0);
} else {
/* pass */
hex_decode(query);
}
}
/* 1. requests that may be served without DSA */
switch (*query) {
/* display Help-File */
case cHELP:
if (dosyslog)
syslog (LOG_INFO, "working on query: %c (%s,%u) <%08d>",
cHELP, ip_addr, ip_port, glob->svc_cnt);
if (http == 1) PRINT_HTML_HEADER;
fprintf(fp, "<HTML><HEAD>");
disp_file(glob, glob->helpfile, fp);
PRINT_HTML_FOOTER;
rewind(fp);
exit_tweb( 0 );
/* request error-explanation */
case cERROR:
if (dosyslog)
syslog (LOG_INFO, "working on query: %c (%s,%u) <%08d>",
cERROR, ip_addr, ip_port, glob->svc_cnt);
/* fprintf(fp, HTML_HEAD_TITLE, "Errors", glob->la[100]);
*/
do_error( fp, 0 , 1, glob );
rewind(fp);
exit_tweb( 0 );
/* RCC: remote configuration control */
case cCONFIG:
if (dosyslog)
syslog (LOG_INFO, "working on query: %c (%s,%u) <%08d>",
cCONFIG, ip_addr, ip_port, glob->svc_cnt);
if (http == 1) PRINT_HTML_HEADER;
fprintf(fp, HTML_HEAD_TITLE, "Configuration", glob->la[100]);
output(fp, glob, TRUE);
langoutput(fp, glob, TRUE);
PRINT_HTML_FOOTER;
rewind(fp);
exit_tweb(0);
/* query access-statistic */
case cSTATS:
if (dosyslog)
syslog (LOG_INFO, "working on query: %c (%s,%u) <%08d>",
cSTATS, ip_addr, ip_port, glob->svc_cnt);
if (http == 1) PRINT_HTML_HEADER;
fprintf(fp, HTML_HEAD_TITLE, "Statistics", glob->la[100]);
fprintf(fp,
"\n<strong>#############STATISTIC-DISPLAY#############</strong><br>\n" );
fprintf( fp, "\n%s\n\n<p>\n", version );
(void) put_hackStats (fp, 0);
PRINT_HTML_FOOTER;
rewind (fp);
exit_tweb (0);
/* NOT REACHED */
}
/* with ldap-referral use this host + port + use do_read */
/* query looks like this: Wldap://host:port/dn */
if ( *query == cREFERRAL ) {
char *host, *port, *dn = NULL;
glob->ldap_referral_mode = 1;
if ( ( host = strstr( query, "ldap://" ) ) ) {
host += 7;
if ( ( port = strchr( host, ':' ) ) ) {
*port++ = '\0';
if ( ( dn = strchr( port, '/' ) ) ) {
*dn = '\0';
glob->ldapd = strdup ( host );
glob->ldapport = atoi ( port );
*dn = cREAD;
query = dn;
}
}
}
if ( !dn )
exit_tweb( 1 );
}
/* from here on there is needed a connection to the DSA */
if ( (ld = ldap_open( glob->ldapd, glob->ldapport )) == NULL ) {
if ( debug ) perror( "ldap_open" );
do_error( fp, LDAP_SERVER_DOWN, SERVER_ERROR, glob);
rewind(fp);
exit_tweb( 1 );
}
if(glob->caching_terms)
trade_cache(fp, ld, query, glob);
/* performance of STRICT-BASEDN (blind out accesses != BASEDN) */
if(glob->strict_basedn)
strict_basednf(fp, ld, query, glob);
/* 2. queries with binding of the owner */
switch (*query) {
/* request of the modification-formulare */
case cGETMOD:
/* log the request without password */
hex_decode(query);
if (dosyslog) {
char qbuf[BUFSIZ], *qbufp;
strcpy(qbuf, query);
if( ( qbufp = strchr(qbuf, '?')) )
*qbufp = '\0';
syslog (LOG_INFO, "working on query: %s (%s,%u) <%08d>",
qbuf, ip_addr, ip_port, glob->svc_cnt);
}
rewind(fp);
/* follow aliases while searching */
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 0
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Adopt TWEB to LDAP_API_VERSION >= 2003.
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ldap_opt = LDAP_DEREF_ALWAYS;
ldap_set_option( ld, LDAP_OPT_DEREF, &ldap_opt );
Initial revision
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#else
ld->ld_deref = LDAP_DEREF_ALWAYS;
#endif
if ( !searchaliases )
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 0
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Adopt TWEB to LDAP_API_VERSION >= 2003.
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ldap_opt = LDAP_DEREF_FINDING;
ldap_set_option( ld, LDAP_OPT_DEREF, &ldap_opt );
Initial revision
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#else
ld->ld_deref = LDAP_DEREF_FINDING;
#endif
/* send WWW-Formulare with contence of the desired entry
to the client */
do_form( ld, fp, ++query, glob);
ldap_unbind (ld);
close_ldap_connections(glob);
rewind(fp);
exit_tweb (0);
/* return of the modification-formulare */
case cDOMOD:
/* log the request in readable form without password if desired */
if (dosyslog) {
char qbuf[100*BUFSIZ], *qbufp;
strcpy(qbuf, query);
if( ( qbufp = strchr (qbuf, '?')) )
*qbufp = '\0';
hex_decode(qbuf+1);
syslog (LOG_INFO, "working on query: %s (%s,%u) <%08d>",
qbuf, ip_addr, ip_port, glob->svc_cnt);
}
/* perform modification with the original request */
do_modify( ld, fp, ++query, glob);
ldap_unbind (ld);
close_ldap_connections(glob);
rewind(fp);
exit_tweb (0);
/* NOT REACHED */
}
/* perform all the other requests */
/* log the request in readable form first */
hex_decode(query);
if (dosyslog)
syslog (LOG_INFO, "working on query: %s (%s,%u) <%08d>",
*query ? trimright(query, WSPACE) : "BASEDN", ip_addr, ip_port,
glob->svc_cnt);
/* accesses with resolvation of alias-entries */
Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 0
Initial revision
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Adopt TWEB to LDAP_API_VERSION >= 2003.
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ldap_opt = LDAP_DEREF_ALWAYS;
ldap_set_option( ld, LDAP_OPT_DEREF, &ldap_opt );
Initial revision
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#else
ld->ld_deref = LDAP_DEREF_ALWAYS;
#endif
if ( !searchaliases )
Adopt TWEB to LDAP_API_VERSION >= 2003.
1999-09-14 00:28:30 +08:00
#if OL_LDAPV > 0
Initial revision
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Adopt TWEB to LDAP_API_VERSION >= 2003.
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ldap_opt = LDAP_DEREF_FINDING;
ldap_set_option( ld, LDAP_OPT_DEREF, &ldap_opt );
Initial revision
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#else
ld->ld_deref = LDAP_DEREF_FINDING;
#endif
/* bind to DSA by order of the user as Web-DN
Adopt TWEB to LDAP_API_VERSION >= 2003.
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(DN1 or DN2 was decided at check4access) */
Initial revision
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Adopt TWEB to LDAP_API_VERSION >= 2003.
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#if OL_LDAPV > 0
Initial revision
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/* a dummy call as long as socket connections are not settled
* with OpenLDAP
*/
if ( dosyslog )
syslog( LOG_INFO, "do_queries(): calling ldap_simple_bind_s()...\n" );
#endif
if ( (rc=ldap_simple_bind_s( ld, glob->webdn, glob->webpw ))
!= LDAP_SUCCESS ) {
if ( debug ) ldap_perror( ld, "ldap_simple_bind_s" );
do_error( fp, rc, SERVER_ERROR, glob);
rewind(fp);
exit_tweb( 1 );
}
/* 3. requests to the GW by order of the user */
switch ( *query++ ) {
/* read entry */
case cREAD:
do_read( ld, fp, query, 0, glob );
break;
/* display second page */
case cREADALL:
do_read( ld, fp, query, 1, glob);
break;
/* search entries */
case cSEARCH:
do_search( ld, fp, query, glob );
break;
/* list entries (browsing) */
case cLIST:
do_menu( ld, fp, query, "", glob );
break;
#ifdef TUE_TEL
/* list entries (browsing TON instead of DN) */
case cTON:
if(glob->ton_urls)
do_ton( ld, fp, query, glob );
break;
#endif
/* request GIF-photo (Photo in X.500 as JPEG) */
case cGIF:
do_pict( ld, fp, query, 1, glob);
break;
/* display JPEG-Photo */
case cJPEG:
do_pict( ld, fp, query, 2, glob);
break;
/* display X.500-G3FAX-Photo */
case cG3FAX:
do_pict( ld, fp, query, 0, glob);
break;
/* play Audio-attribute */
case cAUDIO:
do_audio( ld, fp, query, 0, glob);
break;
/* eXtended query format */
case cEXTENDED:
do_xtend( ld, fp, query, 0, glob);
break;
/* Default (empty query) is browsing of BASEDN */
default:
do_menu( ld, fp, glob->basedn->dn, "", glob );
break;
}
/* Job done, terminate connection to the DSA and bye! */
ldap_unbind (ld);
close_ldap_connections(glob);
rewind(fp);
exit_tweb( 0 );
/* NOT REACHED */
}
/* end of function: do_queries */
PUBLIC void timeoutf(sig)
int sig;
{
/* fprintf(stderr, "timeout!"); */
exit_tweb(0);
}
/* end of function: timeoutf */
PRIVATE void strict_basednf(fp, ld, query, glob)
FILE *fp;
LDAP *ld;
char *query;
GLOB_STRUCT *glob;
{
char dnbuf[BUFSIZ], basednbuf[BUFSIZ], *strptr;
LDAPMessage *res, *e;
int rc, flag = 0, i, j;
struct timeval timeout;
char *url = NULL, **uri, *urlnola = NULL;
pGW_SWITCH_LINE gw_ptr;
char *url_tmp;
char **dnarray, **bdnarray;
#ifdef TUE_TEL
/* Patch for TONS */
if( glob->ton_urls && (*query == cTON))
return;
#endif
/* Patch for FORMs/PULLDOWNs (cPULLDOWN) */
if( glob->pull_down_menus && (*query == cPULLDOWN))
return;
/* Patch for FORMs/BUTTONs (cBUTTONs) */
if( glob->pull_down_menus && (*query == cBUTTON))
return;
if(*query)
strcpy(dnbuf, query+1);
else
strcpy(dnbuf, "\0");
hex_decode(dnbuf);
strcpy(basednbuf, glob->basedn->dn);
if( ( strptr = strchr(dnbuf, '?')) )
*strptr = '\0';
if( *query && !dn_issuffix( dn_normalize(dnbuf), dn_normalize(basednbuf))) {
dnarray = dn2charray(dnbuf);
bdnarray = glob->basedn->dnarray;
strcpy(dnbuf, "\0");
if (glob->gw_switch) {
for(gw_ptr = glob->gw_switch->list;
!flag && gw_ptr; gw_ptr = gw_ptr->next) {
if (!dn_cmp ("root", gw_ptr->dn)) {
flag = 1;
url = gw_ptr->url;
}
}
}
if(!flag) {
fprintf(stderr, "Fehler:strict_basedn w/o root-switch!!!!\n");
exit_tweb(0);
}
for(j=0; bdnarray[j] && dnarray[j]; j++) {
char *dnbufb;
flag = 0;
dnbufb = strdup(dnbuf);
sprintf(dnbuf, "%s%s%s", dnarray[j], *dnbuf ? "," : "" , dnbufb);
if ( glob->gw_switch && glob->gw_switch->dynamic) {
if ( (rc=ldap_simple_bind_s( ld, glob->webdn, glob->webpw ))
!= LDAP_SUCCESS ) {
if ( debug ) ldap_perror( ld, "ldap_simple_bind_s" );
do_error( fp, rc, SERVER_ERROR, glob);
rewind(fp);
exit_tweb( 1 );
}
timeout.tv_sec = glob->timeout;
timeout.tv_usec = 0;
if ( (rc = ldap_search_st( ld, dnbuf, LDAP_SCOPE_BASE, "objectClass=*",
NULL, 0, &timeout, &res )) != LDAP_SUCCESS ) {
/* do_error(fp, rc, NOT_FOUND, glob);
*/
continue;
}
if ( (e = ldap_first_entry( ld, res )) == NULL ) {
do_error(fp, -2, SERVER_ERROR, glob);
return;
}
uri = ldap_get_values( ld, e, "labeledURI" );
for(i=0; uri && uri[i] && *uri[i]; i++) {
char *sp;
if( ( sp = strchr(uri[i], ' ')) ) {
*sp++ = '\0';
if(strstr(sp, glob->gw_switch->lagws)) {
flag = 1;
url = uri[i];
break;
} else if(strstr(sp, GWS))
urlnola = uri[i];
}
}
}
if(!flag && urlnola) {
url = urlnola;
flag = 1;
}
if (glob->gw_switch) {
for(gw_ptr = glob->gw_switch->list;
!flag && gw_ptr; gw_ptr = gw_ptr->next) {
if (!dn_cmp (dnbuf, gw_ptr->dn)) {
flag = 1;
url = gw_ptr->url;
}
}
}
if(strcmp(bdnarray[j], dnarray[j]))
break;
}
if (http == 1) PRINT_HTML_HEADER;
fprintf( fp, HTML_HEAD_TITLE, "ACCESS DENIED", glob->la[100]);
disp_file(glob, glob->header, fp);
fprintf( fp, "%s\n", glob->la[96]);
url_tmp = strdup(url_complete(url, query, ""));
fprintf( fp, "<P><A HREF=\"%s\"><b>%s</b></A>\n",
url_tmp, url_tmp);
disp_file(glob, glob->footer, fp);
PRINT_HTML_FOOTER;
ldap_unbind (ld);
close_ldap_connections(glob);
exit_tweb(0);
}
}
/* end of function: strict_basednf */
PRIVATE void trade_cache(fp, ld, query, glob)
FILE *fp;
LDAP *ld;
char *query;
GLOB_STRUCT *glob;
{
pCACHING_TERMS_LINE ca_ptr;
char dnbuf[BUFSIZ], rdn[BUFSIZ], *strptr;
char tstring[100];
int resflag;
int rc;
struct timeval timeout;
LDAPMessage *res, *e;
char **vals = NULL;
resflag = 0;
if(*query)
strcpy(dnbuf, query+1);
else
strcpy(dnbuf, glob->basedn->dn);
hex_decode(dnbuf);
if( ( strptr = strchr(dnbuf, '?')) )
*strptr = '\0';
strcpy(rdn, dnbuf);
if( ( strptr = strQuoteChr(rdn, ',')) )
*strptr = '\0';
for(ca_ptr = glob->caching_terms; ca_ptr; ca_ptr = ca_ptr->next) {
if((toupper(*query) == toupper(*ca_ptr->access_type)) ||
( !*query && (toupper(*ca_ptr->access_type) == 'M'))) {
if(ca_ptr->rdn_oc && (strstr(str_tolower(rdn), ca_ptr->pattern) ||
(*ca_ptr->pattern == '*'))) {
time(&glob->expiretime);
glob->expiretime += ca_ptr->time;
free(glob->expiretimestr);
strftime(tstring, 99, GMT_FORMAT2, gmtime(&glob->expiretime));
glob->expiretimestr = strdup(tstring);
glob->caching = TRUE;
}
if(!ca_ptr->rdn_oc) {
if(!resflag) {
if ( (rc=ldap_simple_bind_s( ld, glob->webdn, glob->webpw ))
!= LDAP_SUCCESS ) {
if ( debug ) ldap_perror( ld, "ldap_simple_bind_s" );
do_error( fp, rc, SERVER_ERROR, glob);
rewind(fp);
exit_tweb( 1 );
}
timeout.tv_sec = glob->timeout;
timeout.tv_usec = 0;
if ( (rc = ldap_search_st( ld, dnbuf, LDAP_SCOPE_BASE, "objectClass=*",
NULL, 0, &timeout, &res )) != LDAP_SUCCESS ) {
do_error(fp, rc, NOT_FOUND, glob);
return;
}
if ( (e = ldap_first_entry( ld, res )) == NULL ) {
do_error(fp, -2, SERVER_ERROR, glob);
return;
}
vals = ldap_get_values( ld, e, "objectClass" );
resflag = 1;
}
if(charray_inlist( vals, ca_ptr->pattern )) {
time(&glob->expiretime);
glob->expiretime += ca_ptr->time;
free(glob->expiretimestr);
strftime(tstring, 99, GMT_FORMAT2, gmtime(&glob->expiretime));
glob->expiretimestr = strdup(tstring);
glob->caching = TRUE;
}
}
}
}
}
/* end of function: trade_cache */
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