* When translating the input from a REGI command into a vCard, set the telephone...

[citadel.git] / citadel / modules / vcard / serv_vcard.c

/*
 * $Id$
 * 
 * A server-side module for Citadel which supports address book information
 * using the standard vCard format.
 * 
 * Copyright (c) 1999-2007 / released under the GNU General Public License
 */

/*
 * Format of the "Exclusive ID" field of the message containing a user's
 * vCard.  Doesn't matter what it really looks like as long as it's both
 * unique and consistent (because we use it for replication checking to
 * delete the old vCard network-wide when the user enters a new one).
 */
#define VCARD_EXT_FORMAT        "Citadel vCard: personal card for %s at %s"

/*
 * Citadel will accept either text/vcard or text/x-vcard as the MIME type
 * for a vCard.  The following definition determines which one it *generates*
 * when serializing.
 */
#define VCARD_MIME_TYPE         "text/x-vcard"

#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <signal.h>
#include <pwd.h>
#include <errno.h>
#include <ctype.h>
#include <sys/types.h>

#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif

#include <sys/wait.h>
#include <string.h>
#include <limits.h>
#include <libcitadel.h>
#include "citadel.h"
#include "server.h"
#include "citserver.h"
#include "support.h"
#include "config.h"
#include "control.h"
#include "room_ops.h"
#include "user_ops.h"
#include "policy.h"
#include "database.h"
#include "msgbase.h"
#include "internet_addressing.h"
#include "serv_vcard.h"

#include "ctdl_module.h"



/*
 * set global flag calling for an aide to validate new users
 */
void set_mm_valid(void) {
        begin_critical_section(S_CONTROL);
        get_control();
        CitControl.MMflags = CitControl.MMflags | MM_VALID ;
        put_control();
        end_critical_section(S_CONTROL);
}



/*
 * Extract Internet e-mail addresses from a message containing a vCard, and
 * perform a callback for any found.
 */
void vcard_extract_internet_addresses(struct CtdlMessage *msg,
                                void (*callback)(char *, char *) ) {
        struct vCard *v;
        char *s;
        char *addr;
        char citadel_address[SIZ];
        int instance = 0;
        int found_something = 0;

        if (msg->cm_fields['A'] == NULL) return;
        if (msg->cm_fields['N'] == NULL) return;
        snprintf(citadel_address, sizeof citadel_address, "%s @ %s",
                msg->cm_fields['A'], msg->cm_fields['N']);

        v = vcard_load(msg->cm_fields['M']);
        if (v == NULL) return;

        /* Go through the vCard searching for *all* instances of
         * the "email;internet" key
         */
        do {
                s = vcard_get_prop(v, "email;internet", 0, instance++, 0);
                if (s != NULL) {
                        addr = strdup(s);
                        striplt(addr);
                        if (!IsEmptyStr(addr)) {
                                if (callback != NULL) {
                                        callback(addr, citadel_address);
                                }
                        }
                        free(addr);
                        found_something = 1;
                }
                else {
                        found_something = 0;
                }
        } while(found_something);

        vcard_free(v);
}


/* 
 * vCard-to-LDAP conversions.
 *
 * If 'op' is set to V2L_WRITE, then write
 * (add, or change if already exists) a directory entry to the
 * LDAP server, based on the information supplied in a vCard.
 *
 * If 'op' is set to V2L_DELETE, then delete the entry from LDAP.
 */
 
 
void ctdl_vcard_to_directory(struct CtdlMessage *msg, int op) {
        struct vCard *v = NULL;
        int i;
        int have_addr = 0;
        int have_cn = 0;
        
        void *objectlist = NULL;

        char givenname[128];
        char sn[128];
        char uid[256];
        char street[256];
        char city[128];
        char state[3];
        char zipcode[10];
        char calFBURL[256];
        char ldap_dn[SIZ];

        if (msg == NULL) return;
        if (msg->cm_fields['M'] == NULL) return;
        if (msg->cm_fields['A'] == NULL) return;
        if (msg->cm_fields['N'] == NULL) return;

        /* Initialize variables */
        strcpy(givenname, "");
        strcpy(sn, "");
        strcpy(calFBURL, "");

        sprintf(uid, "%s@%s",
                msg->cm_fields['A'],
                msg->cm_fields['N']
        );

        sprintf(ldap_dn, "euid=%s,ou=%s", msg->cm_fields['E'], msg->cm_fields['N']);
        
        /* Are we just deleting?  If so, it's simple... */
        if (op == V2L_DELETE) {
                (void) CtdlDoDirectoryServiceFunc (ldap_dn, NULL, NULL, "ldap", DIRECTORY_USER_DEL);
                return;
        }

        /*
         * If we get to this point then it must be a V2L_WRITE operation.
         */

        /* First make sure the OU for the user's home Citadel host is created */
        (void) CtdlDoDirectoryServiceFunc (NULL, msg->cm_fields['N'], NULL, "ldap", DIRECTORY_CREATE_HOST);
        
        /* Next create the directory service object */
        (void) CtdlDoDirectoryServiceFunc(NULL, NULL, &objectlist, "ldap", DIRECTORY_CREATE_OBJECT);

        /* The first LDAP attribute will be an 'objectclass' list.  Citadel
         * doesn't do anything with this.  It's just there for compatibility
         * with Kolab.
         */
        (void) CtdlDoDirectoryServiceFunc("objectclass", "citadelInetOrgPerson", &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);

        /* Convert the vCard fields to LDAP properties */
        v = vcard_load(msg->cm_fields['M']);
        if (v->numprops) for (i=0; i<(v->numprops); ++i) if (striplt(v->prop[i].value), strlen(v->prop[i].value) > 0) {

                if (!strcasecmp(v->prop[i].name, "n")) {
                        extract_token(sn,               v->prop[i].value, 0, ';', sizeof sn);
                        extract_token(givenname,        v->prop[i].value, 1, ';', sizeof givenname);
                }

                if (!strcasecmp(v->prop[i].name, "fn")) {
                        (void) CtdlDoDirectoryServiceFunc("cn", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                        have_cn = 1;
                }

                if (!strcasecmp(v->prop[i].name, "title")) {
                        (void) CtdlDoDirectoryServiceFunc("title", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                }

                if (!strcasecmp(v->prop[i].name, "org")) {
                        (void) CtdlDoDirectoryServiceFunc("o", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                }

                if ( (!strcasecmp(v->prop[i].name, "adr"))
                   ||(!strncasecmp(v->prop[i].name, "adr;", 4)) ) {
                        /* Unfortunately, we can only do a single address */
                        if (!have_addr) {
                                have_addr = 1;
                                strcpy(street, "");
                                extract_token(&street[strlen(street)],
                                        v->prop[i].value, 0, ';', (sizeof street - strlen(street))); /* po box */
                                strcat(street, " ");
                                extract_token(&street[strlen(street)],
                                        v->prop[i].value, 1, ';', (sizeof street - strlen(street))); /* extend addr */
                                strcat(street, " ");
                                extract_token(&street[strlen(street)],
                                        v->prop[i].value, 2, ';', (sizeof street - strlen(street))); /* street */
                                striplt(street);
                                extract_token(city, v->prop[i].value, 3, ';', sizeof city);
                                extract_token(state, v->prop[i].value, 4, ';', sizeof state);
                                extract_token(zipcode, v->prop[i].value, 5, ';', sizeof zipcode);

                                // ldap requires these fields to be something
                                if (IsEmptyStr(street)) strcpy(street, "_");
                                if (IsEmptyStr(zipcode)) strcpy(zipcode, "_");
                                if (IsEmptyStr(city)) strcpy(city, "_");
                                if (IsEmptyStr(state)) strcpy(state, "_");

                                (void) CtdlDoDirectoryServiceFunc("street", street, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                                (void) CtdlDoDirectoryServiceFunc("l", city, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                                (void) CtdlDoDirectoryServiceFunc("st", state, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                                (void) CtdlDoDirectoryServiceFunc("postalcode", zipcode, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                        }
                }

                if ( (!strcasecmp(v->prop[i].name, "tel;home"))
                   || (!strcasecmp(v->prop[i].name, "tel;type=home")) )
                        (void) CtdlDoDirectoryServiceFunc("homePhone", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                else
                if ( (!strcasecmp(v->prop[i].name, "tel;fax"))
                   || (!strcasecmp(v->prop[i].name, "tel;type=fax")) )
                        (void) CtdlDoDirectoryServiceFunc("facsimileTelephoneNumber", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                else
                if ( (!strcasecmp(v->prop[i].name, "tel;cell"))
                   || (!strcasecmp(v->prop[i].name, "tel;type=cell")) )
                        (void) CtdlDoDirectoryServiceFunc("mobile", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                else
                if ( (!strcasecmp(v->prop[i].name, "tel"))
                   ||(!strncasecmp(v->prop[i].name, "tel;", 4)) ) {
                        (void) CtdlDoDirectoryServiceFunc("telephoneNumber", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                }


                if ( (!strcasecmp(v->prop[i].name, "email"))
                   ||(!strcasecmp(v->prop[i].name, "email;internet")) ) {
                        (void) CtdlDoDirectoryServiceFunc("mail", v->prop[i].value, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
                }

                /* Calendar free/busy URL (take the first one we find, but if a subsequent
                 * one contains the "pref" designation then we go with that instead.)
                 */
                if ( (!strcasecmp(v->prop[i].name, "fburl"))
                   ||(!strncasecmp(v->prop[i].name, "fburl;", 6)) ) {
                        if ( (IsEmptyStr(calFBURL))
                           || (!strncasecmp(v->prop[i].name, "fburl;pref", 10)) ) {
                                safestrncpy(calFBURL, v->prop[i].value, sizeof calFBURL);
                        }
                }

        }
        vcard_free(v);  /* Don't need this anymore. */

        /* "sn" (surname) based on info in vCard */
        (void) CtdlDoDirectoryServiceFunc("sn", sn, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);

        /* "givenname" (first name) based on info in vCard */
        if (IsEmptyStr(givenname)) strcpy(givenname, "_");
        if (IsEmptyStr(sn)) strcpy(sn, "_");
        (void) CtdlDoDirectoryServiceFunc("givenname", givenname, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);

        /* "uid" is a Kolab compatibility thing.  We just do cituser@citnode */
        (void) CtdlDoDirectoryServiceFunc("uid", uid, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);

        /* Add a "cn" (Common Name) attribute based on the user's screen name,
         * but only there was no 'fn' (full name) property in the vCard 
         */
        if (!have_cn)
                (void) CtdlDoDirectoryServiceFunc("cn", msg->cm_fields['A'], &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);

        /* Add a "calFBURL" attribute if a calendar free/busy URL exists */
        if (!IsEmptyStr(calFBURL)) {
                (void) CtdlDoDirectoryServiceFunc("calFBURL", calFBURL, &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
        }
        
        // Add this messages EUID as the primary key for this entry.
        (void) CtdlDoDirectoryServiceFunc("euid", msg->cm_fields['E'], &objectlist, "ldap", DIRECTORY_ATTRIB_ADD);
        
        
        (void) CtdlDoDirectoryServiceFunc(ldap_dn, NULL, &objectlist, "ldap", DIRECTORY_SAVE_OBJECT);
        
        (void) CtdlDoDirectoryServiceFunc(NULL, NULL, &objectlist, "ldap", DIRECTORY_FREE_OBJECT);
        CtdlLogPrintf(CTDL_DEBUG, "Directory Services write operation complete.\n");
}



/*
 * Callback for vcard_add_to_directory()
 * (Lotsa ugly nested callbacks.  Oh well.)
 */
void vcard_directory_add_user(char *internet_addr, char *citadel_addr) {
        char buf[SIZ];

        /* We have to validate that we're not stepping on someone else's
         * email address ... but only if we're logged in.  Otherwise it's
         * probably just the networker or something.
         */
        if (CC->logged_in) {
                CtdlLogPrintf(CTDL_DEBUG, "Checking for <%s>...\n", internet_addr);
                if (CtdlDirectoryLookup(buf, internet_addr, sizeof buf) == 0) {
                        if (strcasecmp(buf, citadel_addr)) {
                                /* This address belongs to someone else.
                                 * Bail out silently without saving.
                                 */
                                CtdlLogPrintf(CTDL_DEBUG, "DOOP!\n");
                                return;
                        }
                }
        }
        CtdlLogPrintf(CTDL_INFO, "Adding %s (%s) to directory\n",
                        citadel_addr, internet_addr);
        CtdlDirectoryAddUser(internet_addr, citadel_addr);
}


/*
 * Back end function for cmd_igab()
 */
void vcard_add_to_directory(long msgnum, void *data) {
        struct CtdlMessage *msg;

        msg = CtdlFetchMessage(msgnum, 1);
        if (msg != NULL) {
                vcard_extract_internet_addresses(msg, vcard_directory_add_user);
        }

        ctdl_vcard_to_directory(msg, V2L_WRITE);

        CtdlFreeMessage(msg);
}


/*
 * Initialize Global Adress Book
 */
void cmd_igab(char *argbuf) {
        char hold_rm[ROOMNAMELEN];

        if (CtdlAccessCheck(ac_aide)) return;

        strcpy(hold_rm, CC->room.QRname);       /* save current room */

        if (getroom(&CC->room, ADDRESS_BOOK_ROOM) != 0) {
                getroom(&CC->room, hold_rm);
                cprintf("%d cannot get address book room\n", ERROR + ROOM_NOT_FOUND);
                return;
        }

        /* Empty the existing database first.
         */
        CtdlDirectoryInit();

        /* We want *all* vCards in this room */
        CtdlForEachMessage(MSGS_ALL, 0, NULL, "^[Tt][Ee][Xx][Tt]/.*[Vv][Cc][Aa][Rr][Dd]$",
                NULL, vcard_add_to_directory, NULL);

        getroom(&CC->room, hold_rm);    /* return to saved room */
        cprintf("%d Directory has been rebuilt.\n", CIT_OK);
}




/*
 * See if there is a valid Internet address in a vCard to use for outbound
 * Internet messages.  If there is, stick it in the buffer.
 */
void extract_inet_email_addrs(char *emailaddrbuf, size_t emailaddrbuf_len,
                                char *secemailaddrbuf, size_t secemailaddrbuf_len,
                                struct vCard *v, int local_addrs_only) {
        char *s, *addr;
        int instance = 0;
        int saved_instance = 0;

        /* Go through the vCard searching for *all* instances of
         * the "email;internet" key
         */
        while (s = vcard_get_prop(v, "email;internet", 0, instance++, 0),  s != NULL) {
                addr = strdup(s);
                striplt(addr);
                if (!IsEmptyStr(addr)) {
                        if ( (IsDirectory(addr, 1)) || 
                             (!local_addrs_only) ) {
                                ++saved_instance;
                                if ((saved_instance == 1) && (emailaddrbuf != NULL)) {
                                        safestrncpy(emailaddrbuf, addr, emailaddrbuf_len);
                                }
                                else if ((saved_instance == 2) && (secemailaddrbuf != NULL)) {
                                        safestrncpy(secemailaddrbuf, addr, secemailaddrbuf_len);
                                }
                                else if ((saved_instance > 2) && (secemailaddrbuf != NULL)) {
                                        if ( (strlen(addr) + strlen(secemailaddrbuf) + 2) 
                                           < secemailaddrbuf_len ) {
                                                strcat(secemailaddrbuf, "|");
                                                strcat(secemailaddrbuf, addr);
                                        }
                                }
                        }
                }
                free(addr);
        }
}



/*
 * See if there is a name / screen name / friendly name  in a vCard to use for outbound
 * Internet messages.  If there is, stick it in the buffer.
 */
void extract_friendly_name(char *namebuf, size_t namebuf_len, struct vCard *v)
{
        char *s;

        s = vcard_get_prop(v, "fn", 0, 0, 0);
        if (s == NULL) {
                s = vcard_get_prop(v, "n", 0, 0, 0);
        }

        if (s != NULL) {
                safestrncpy(namebuf, s, namebuf_len);
        }
}


/*
 * Callback function for vcard_upload_beforesave() hunts for the real vcard in the MIME structure
 */
void vcard_extract_vcard(char *name, char *filename, char *partnum, char *disp,
                   void *content, char *cbtype, char *cbcharset, size_t length,
                   char *encoding, char *cbid, void *cbuserdata)
{
        struct vCard **v = (struct vCard **) cbuserdata;

        if (  (!strcasecmp(cbtype, "text/x-vcard"))
           || (!strcasecmp(cbtype, "text/vcard")) ) {

                CtdlLogPrintf(CTDL_DEBUG, "Part %s contains a vCard!  Loading...\n", partnum);
                if (*v != NULL) {
                        vcard_free(*v);
                }
                *v = vcard_load(content);
        }
}


/*
 * This handler detects whether the user is attempting to save a new
 * vCard as part of his/her personal configuration, and handles the replace
 * function accordingly (delete the user's existing vCard in the config room
 * and in the global address book).
 */
int vcard_upload_beforesave(struct CtdlMessage *msg) {
        char *ptr;
        char *s;
        char buf[SIZ];
        struct ctdluser usbuf;
        long what_user;
        struct vCard *v = NULL;
        char *ser = NULL;
        int i = 0;
        int yes_my_citadel_config = 0;
        int yes_any_vcard_room = 0;

        if (!CC->logged_in) return(0);  /* Only do this if logged in. */

        /* Is this some user's "My Citadel Config" room? */
        if ( (CC->room.QRflags && QR_MAILBOX)
           && (!strcasecmp(&CC->room.QRname[11], USERCONFIGROOM)) ) {
                /* Yes, we want to do this */
                yes_my_citadel_config = 1;

#ifdef VCARD_SAVES_BY_AIDES_ONLY
                /* Prevent non-aides from performing registration changes */
                if (CC->user.axlevel < 6) {
                        return(1);
                }
#endif

        }

        /* Is this a room with an address book in it? */
        if (CC->room.QRdefaultview == VIEW_ADDRESSBOOK) {
                yes_any_vcard_room = 1;
        }

        /* If neither condition exists, don't run this hook. */
        if ( (!yes_my_citadel_config) && (!yes_any_vcard_room) ) {
                return(0);
        }

        /* If this isn't a MIME message, don't bother. */
        if (msg->cm_format_type != 4) return(0);

        /* Ok, if we got this far, look into the situation further... */

        ptr = msg->cm_fields['M'];
        if (ptr == NULL) return(0);

        mime_parser(msg->cm_fields['M'],
                NULL,
                *vcard_extract_vcard,
                NULL, NULL,
                &v,             /* user data ptr - put the vcard here */
                0
        );

        if (v == NULL) return(0);       /* no vCards were found in this message */

        /* If users cannot create their own accounts, they cannot re-register either. */
        if ( (yes_my_citadel_config) && (config.c_disable_newu) && (CC->user.axlevel < 6) ) {
                return(1);
        }

        s = vcard_get_prop(v, "FN", 0, 0, 0);
        if (s) CtdlLogPrintf(CTDL_DEBUG, "vCard beforesave hook running for <%s>\n", s);

        if (yes_my_citadel_config) {
                /* Bingo!  The user is uploading a new vCard, so
                 * delete the old one.  First, figure out which user
                 * is being re-registered...
                 */
                what_user = atol(CC->room.QRname);

                if (what_user == CC->user.usernum) {
                        /* It's the logged in user.  That was easy. */
                        memcpy(&usbuf, &CC->user, sizeof(struct ctdluser));
                }
                
                else if (getuserbynumber(&usbuf, what_user) == 0) {
                        /* We fetched a valid user record */
                }

                else {
                        /* somebody set up us the bomb! */
                        yes_my_citadel_config = 0;
                }
        }
        
        if (yes_my_citadel_config) {
                /* Delete the user's old vCard.  This would probably
                 * get taken care of by the replication check, but we
                 * want to make sure there is absolutely only one
                 * vCard in the user's config room at all times.
                 *
                 */
                CtdlDeleteMessages(CC->room.QRname, NULL, 0, "^[Tt][Ee][Xx][Tt]/.*[Vv][Cc][Aa][Rr][Dd]$");

                /* Make the author of the message the name of the user. */
                if (msg->cm_fields['A'] != NULL) {
                        free(msg->cm_fields['A']);
                }
                msg->cm_fields['A'] = strdup(usbuf.fullname);
        }

        /* Insert or replace RFC2739-compliant free/busy URL */
        if (yes_my_citadel_config) {
                sprintf(buf, "http://%s/%s.vfb",
                        config.c_fqdn,
                        usbuf.fullname);
                for (i=0; buf[i]; ++i) {
                        if (buf[i] == ' ') buf[i] = '_';
                }
                vcard_set_prop(v, "FBURL;PREF", buf, 0);
        }

        /* If the vCard has no UID, then give it one. */
        s = vcard_get_prop(v, "UID", 0, 0, 0);
        if (s == NULL) {
                generate_uuid(buf);
                vcard_set_prop(v, "UID", buf, 0);
        }

        /* Enforce local UID policy if applicable */
        if (yes_my_citadel_config) {
                snprintf(buf, sizeof buf, VCARD_EXT_FORMAT, msg->cm_fields['A'], NODENAME);
                vcard_set_prop(v, "UID", buf, 0);
        }

        /* 
         * Set the EUID of the message to the UID of the vCard.
         */
        if (msg->cm_fields['E'] != NULL)
        {
                free(msg->cm_fields['E']);
                msg->cm_fields['E'] = NULL;
        }
        s = vcard_get_prop(v, "UID", 0, 0, 0);
        if (s != NULL) {
                msg->cm_fields['E'] = strdup(s);
                if (msg->cm_fields['U'] == NULL) {
                        msg->cm_fields['U'] = strdup(s);
                }
        }

        /*
         * Set the Subject to the name in the vCard.
         */
        s = vcard_get_prop(v, "FN", 0, 0, 0);
        if (s == NULL) {
                s = vcard_get_prop(v, "N", 0, 0, 0);
        }
        if (s != NULL) {
                if (msg->cm_fields['U'] != NULL) {
                        free(msg->cm_fields['U']);
                }
                msg->cm_fields['U'] = strdup(s);
        }

        /* Re-serialize it back into the msg body */
        ser = vcard_serialize(v);
        if (ser != NULL) {
                msg->cm_fields['M'] = realloc(msg->cm_fields['M'], strlen(ser) + 1024);
                sprintf(msg->cm_fields['M'],
                        "Content-type: " VCARD_MIME_TYPE
                        "\r\n\r\n%s\r\n", ser);
                free(ser);
        }

        /* Now allow the save to complete. */
        vcard_free(v);
        return(0);
}



/*
 * This handler detects whether the user is attempting to save a new
 * vCard as part of his/her personal configuration, and handles the replace
 * function accordingly (copy the vCard from the config room to the global
 * address book).
 */
int vcard_upload_aftersave(struct CtdlMessage *msg) {
        char *ptr;
        int linelen;
        long I;
        struct vCard *v;
        int is_UserConf=0;
        int is_GAB=0;

        if (!CC->logged_in) return(0);  /* Only do this if logged in. */

        /* If this isn't the configuration room, or if this isn't a MIME
         * message, don't bother.
         */
        if (msg->cm_fields['O'] == NULL) return(0);
        if (!strcasecmp(msg->cm_fields['O'], USERCONFIGROOM)) is_UserConf = 1;
        if (!strcasecmp(msg->cm_fields['O'], ADDRESS_BOOK_ROOM)) is_GAB = 1;
        if (!is_UserConf && !is_GAB) return(0);
        if (msg->cm_format_type != 4) return(0);

        ptr = msg->cm_fields['M'];
        if (ptr == NULL) return(0);
        while (ptr != NULL) {
        
                linelen = strcspn(ptr, "\n");
                if (linelen == 0) return(0);    /* end of headers */    
                
                if (  (!strncasecmp(ptr, "Content-type: text/x-vcard", 26))
                   || (!strncasecmp(ptr, "Content-type: text/vcard", 24)) ) {
                        /*
                         * Bingo!  The user is uploading a new vCard, so
                         * copy it to the Global Address Book room.
                         */

                        I = atol(msg->cm_fields['I']);
                        if (I < 0L) return(0);

                        /* Store our Internet return address in memory */
                        v = vcard_load(msg->cm_fields['M']);
                        extract_inet_email_addrs(CC->cs_inet_email, sizeof CC->cs_inet_email,
                                                CC->cs_inet_other_emails, sizeof CC->cs_inet_other_emails,
                                                v, 1);
                        extract_friendly_name(CC->cs_inet_fn, sizeof CC->cs_inet_fn, v);
                        vcard_free(v);

                        if (!is_GAB)
                        {       // This is not the GAB
                                /* Put it in the Global Address Book room... */
                                CtdlSaveMsgPointerInRoom(ADDRESS_BOOK_ROOM, I, 1, msg);
                        }

                        /* ...and also in the directory database. */
                        vcard_add_to_directory(I, NULL);

                        /* Some sites want an Aide to be notified when a
                         * user registers or re-registers
                         * But if the user was an Aide or was edited by an Aide then we can
                         * Assume they don't need validating.
                         */
                        if (CC->user.axlevel >= 6) {
                                lgetuser(&CC->user, CC->curr_user);
                                CC->user.flags |= US_REGIS;
                                lputuser(&CC->user);
                                return (0);
                        }
                        
                        set_mm_valid();

                        /* ...which also means we need to flag the user */
                        lgetuser(&CC->user, CC->curr_user);
                        CC->user.flags |= (US_REGIS|US_NEEDVALID);
                        lputuser(&CC->user);

                        return(0);
                }

                ptr = strchr((char *)ptr, '\n');
                if (ptr != NULL) ++ptr;
        }

        return(0);
}



/*
 * back end function used for callbacks
 */
void vcard_gu_backend(long supplied_msgnum, void *userdata) {
        long *msgnum;

        msgnum = (long *) userdata;
        *msgnum = supplied_msgnum;
}


/*
 * If this user has a vcard on disk, read it into memory, otherwise allocate
 * and return an empty vCard.
 */
struct vCard *vcard_get_user(struct ctdluser *u) {
        char hold_rm[ROOMNAMELEN];
        char config_rm[ROOMNAMELEN];
        struct CtdlMessage *msg = NULL;
        struct vCard *v;
        long VCmsgnum;

        strcpy(hold_rm, CC->room.QRname);       /* save current room */
        MailboxName(config_rm, sizeof config_rm, u, USERCONFIGROOM);

        if (getroom(&CC->room, config_rm) != 0) {
                getroom(&CC->room, hold_rm);
                return vcard_new();
        }

        /* We want the last (and probably only) vcard in this room */
        VCmsgnum = (-1);
        CtdlForEachMessage(MSGS_LAST, 1, NULL, "^[Tt][Ee][Xx][Tt]/.*[Vv][Cc][Aa][Rr][Dd]$",
                NULL, vcard_gu_backend, (void *)&VCmsgnum );
        getroom(&CC->room, hold_rm);    /* return to saved room */

        if (VCmsgnum < 0L) return vcard_new();

        msg = CtdlFetchMessage(VCmsgnum, 1);
        if (msg == NULL) return vcard_new();

        v = vcard_load(msg->cm_fields['M']);
        CtdlFreeMessage(msg);
        return v;
}


/*
 * Store this user's vCard in the appropriate place
 */
/*
 * Write our config to disk
 */
void vcard_write_user(struct ctdluser *u, struct vCard *v) {
        char *ser;

        ser = vcard_serialize(v);
        if (ser == NULL) {
                ser = strdup("begin:vcard\r\nend:vcard\r\n");
        }
        if (!ser) return;

        /* This handy API function does all the work for us.
         * NOTE: normally we would want to set that last argument to 1, to
         * force the system to delete the user's old vCard.  But it doesn't
         * have to, because the vcard_upload_beforesave() hook above
         * is going to notice what we're trying to do, and delete the old vCard.
         */
        CtdlWriteObject(USERCONFIGROOM,         /* which room */
                        VCARD_MIME_TYPE,        /* MIME type */
                        ser,                    /* data */
                        strlen(ser)+1,          /* length */
                        u,                      /* which user */
                        0,                      /* not binary */
                        0,                      /* don't delete others of this type */
                        0);                     /* no flags */

        free(ser);
}



/*
 * Old style "enter registration info" command.  This function simply honors
 * the REGI protocol command, translates the entered parameters into a vCard,
 * and enters the vCard into the user's configuration.
 */
void cmd_regi(char *argbuf) {
        int a,b,c;
        char buf[SIZ];
        struct vCard *my_vcard;

        char tmpaddr[SIZ];
        char tmpcity[SIZ];
        char tmpstate[SIZ];
        char tmpzip[SIZ];
        char tmpaddress[SIZ];
        char tmpcountry[SIZ];

        unbuffer_output();

        if (!(CC->logged_in)) {
                cprintf("%d Not logged in.\n",ERROR + NOT_LOGGED_IN);
                return;
        }

        /* If users cannot create their own accounts, they cannot re-register either. */
        if ( (config.c_disable_newu) && (CC->user.axlevel < 6) ) {
                cprintf("%d Self-service registration is not allowed here.\n",
                        ERROR + HIGHER_ACCESS_REQUIRED);
        }

        my_vcard = vcard_get_user(&CC->user);
        strcpy(tmpaddr, "");
        strcpy(tmpcity, "");
        strcpy(tmpstate, "");
        strcpy(tmpzip, "");
        strcpy(tmpcountry, "USA");

        cprintf("%d Send registration...\n", SEND_LISTING);
        a=0;
        while (client_getln(buf, sizeof buf), strcmp(buf,"000")) {
                if (a==0) vcard_set_prop(my_vcard, "n", buf, 0);
                if (a==1) strcpy(tmpaddr, buf);
                if (a==2) strcpy(tmpcity, buf);
                if (a==3) strcpy(tmpstate, buf);
                if (a==4) {
                        for (c=0; buf[c]; ++c) {
                                if ((buf[c]>='0') && (buf[c]<='9')) {
                                        b = strlen(tmpzip);
                                        tmpzip[b] = buf[c];
                                        tmpzip[b+1] = 0;
                                }
                        }
                }
                if (a==5) vcard_set_prop(my_vcard, "tel", buf, 0);
                if (a==6) vcard_set_prop(my_vcard, "email;internet", buf, 0);
                if (a==7) strcpy(tmpcountry, buf);
                ++a;
        }

        snprintf(tmpaddress, sizeof tmpaddress, ";;%s;%s;%s;%s;%s",
                tmpaddr, tmpcity, tmpstate, tmpzip, tmpcountry);
        vcard_set_prop(my_vcard, "adr", tmpaddress, 0);
        vcard_write_user(&CC->user, my_vcard);
        vcard_free(my_vcard);
}


/*
 * Protocol command to fetch registration info for a user
 */
void cmd_greg(char *argbuf)
{
        struct ctdluser usbuf;
        struct vCard *v;
        char *s;
        char who[USERNAME_SIZE];
        char adr[256];
        char buf[256];

        extract_token(who, argbuf, 0, '|', sizeof who);

        if (!(CC->logged_in)) {
                cprintf("%d Not logged in.\n", ERROR + NOT_LOGGED_IN);
                return;
        }

        if (!strcasecmp(who,"_SELF_")) strcpy(who,CC->curr_user);

        if ((CC->user.axlevel < 6) && (strcasecmp(who,CC->curr_user))) {
                cprintf("%d Higher access required.\n",
                        ERROR + HIGHER_ACCESS_REQUIRED);
                return;
        }

        if (getuser(&usbuf, who) != 0) {
                cprintf("%d '%s' not found.\n", ERROR + NO_SUCH_USER, who);
                return;
        }

        v = vcard_get_user(&usbuf);

        cprintf("%d %s\n", LISTING_FOLLOWS, usbuf.fullname);
        cprintf("%ld\n", usbuf.usernum);
        cprintf("%s\n", usbuf.password);
        s = vcard_get_prop(v, "n", 0, 0, 0);
        cprintf("%s\n", s ? s : " ");   /* name */

        s = vcard_get_prop(v, "adr", 0, 0, 0);
        snprintf(adr, sizeof adr, "%s", s ? s : " ");/* address... */

        extract_token(buf, adr, 2, ';', sizeof buf);
        cprintf("%s\n", buf);                           /* street */
        extract_token(buf, adr, 3, ';', sizeof buf);
        cprintf("%s\n", buf);                           /* city */
        extract_token(buf, adr, 4, ';', sizeof buf);
        cprintf("%s\n", buf);                           /* state */
        extract_token(buf, adr, 5, ';', sizeof buf);
        cprintf("%s\n", buf);                           /* zip */

        s = vcard_get_prop(v, "tel", 0, 0, 0);
        if (s == NULL) s = vcard_get_prop(v, "tel", 1, 0, 0);
        if (s != NULL) {
                cprintf("%s\n", s);
        }
        else {
                cprintf(" \n");
        }

        cprintf("%d\n", usbuf.axlevel);

        s = vcard_get_prop(v, "email;internet", 0, 0, 0);
        cprintf("%s\n", s ? s : " ");
        s = vcard_get_prop(v, "adr", 0, 0, 0);
        snprintf(adr, sizeof adr, "%s", s ? s : " ");/* address... */

        extract_token(buf, adr, 6, ';', sizeof buf);
        cprintf("%s\n", buf);                           /* country */
        cprintf("000\n");
        vcard_free(v);
}



/*
 * When a user is being created, create his/her vCard.
 */
void vcard_newuser(struct ctdluser *usbuf) {
        char vname[256];
        char buf[256];
        int i;
        struct vCard *v;

        vcard_fn_to_n(vname, usbuf->fullname, sizeof vname);
        CtdlLogPrintf(CTDL_DEBUG, "Converted <%s> to <%s>\n", usbuf->fullname, vname);

        /* Create and save the vCard */
        v = vcard_new();
        if (v == NULL) return;
        vcard_add_prop(v, "fn", usbuf->fullname);
        vcard_add_prop(v, "n", vname);
        vcard_add_prop(v, "adr", "adr:;;_;_;_;00000;__");

#ifdef HAVE_GETPWUID_R
        /* If using host auth mode, we add an email address based on the login */
        if (config.c_auth_mode == AUTHMODE_HOST) {
                struct passwd pwd;
                char pwd_buffer[SIZ];
                
#ifdef SOLARIS_GETPWUID
                if (getpwuid_r(usbuf->uid, &pwd, pwd_buffer, sizeof pwd_buffer) != NULL) {
#else // SOLARIS_GETPWUID
                struct passwd *result = NULL;
                CtdlLogPrintf(CTDL_DEBUG, "Searching for uid %d\n", usbuf->uid);
                if (getpwuid_r(usbuf->uid, &pwd, pwd_buffer, sizeof pwd_buffer, &result) == 0) {
#endif // HAVE_GETPWUID_R
                        snprintf(buf, sizeof buf, "%s@%s", pwd.pw_name, config.c_fqdn);
                        vcard_add_prop(v, "email;internet", buf);
                }
        }
#endif

        /* Everyone gets an email address based on their display name */
        snprintf(buf, sizeof buf, "%s@%s", usbuf->fullname, config.c_fqdn);
        for (i=0; buf[i]; ++i) {
                if (buf[i] == ' ') buf[i] = '_';
        }
        vcard_add_prop(v, "email;internet", buf);


        vcard_write_user(usbuf, v);
        vcard_free(v);
}


/*
 * When a user is being deleted, we have to remove his/her vCard.
 * This is accomplished by issuing a message with 'CANCEL' in the S (special)
 * field, and the same Exclusive ID as the existing card.
 */
void vcard_purge(struct ctdluser *usbuf) {
        struct CtdlMessage *msg;
        char buf[SIZ];

        msg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
        if (msg == NULL) return;
        memset(msg, 0, sizeof(struct CtdlMessage));

        msg->cm_magic = CTDLMESSAGE_MAGIC;
        msg->cm_anon_type = MES_NORMAL;
        msg->cm_format_type = 0;
        msg->cm_fields['A'] = strdup(usbuf->fullname);
        msg->cm_fields['O'] = strdup(ADDRESS_BOOK_ROOM);
        msg->cm_fields['N'] = strdup(NODENAME);
        msg->cm_fields['M'] = strdup("Purge this vCard\n");

        snprintf(buf, sizeof buf, VCARD_EXT_FORMAT,
                        msg->cm_fields['A'], NODENAME);
        msg->cm_fields['E'] = strdup(buf);

        msg->cm_fields['S'] = strdup("CANCEL");

        CtdlSubmitMsg(msg, NULL, ADDRESS_BOOK_ROOM, QP_EADDR);
        CtdlFreeMessage(msg);
}


/*
 * Grab vCard directory stuff out of incoming network messages
 */
int vcard_extract_from_network(struct CtdlMessage *msg, char *target_room) {
        char *ptr;
        int linelen;

        if (msg == NULL) return(0);

        if (strcasecmp(target_room, ADDRESS_BOOK_ROOM)) {
                return(0);
        }

        if (msg->cm_format_type != 4) return(0);

        ptr = msg->cm_fields['M'];
        if (ptr == NULL) return(0);
        while (ptr != NULL) {
        
                linelen = strcspn(ptr, "\n");
                if (linelen == 0) return(0);    /* end of headers */    
                
                if (  (!strncasecmp(ptr, "Content-type: text/x-vcard", 26))
                   || (!strncasecmp(ptr, "Content-type: text/vcard", 24)) ) {
                        /* It's a vCard.  Add it to the directory. */
                        vcard_extract_internet_addresses(msg, CtdlDirectoryAddUser);
                        return(0);
                }

                ptr = strchr((char *)ptr, '\n');
                if (ptr != NULL) ++ptr;
        }

        return(0);
}



/* 
 * When a vCard is being removed from the Global Address Book room, remove it
 * from the directory as well.
 */
void vcard_delete_remove(char *room, long msgnum) {
        struct CtdlMessage *msg;
        char *ptr;
        int linelen;

        if (msgnum <= 0L) return;
        
        if (room == NULL) return;

        if (strcasecmp(room, ADDRESS_BOOK_ROOM)) {
                return;
        }

        msg = CtdlFetchMessage(msgnum, 1);
        if (msg == NULL) return;

        ptr = msg->cm_fields['M'];
        if (ptr == NULL) goto EOH;
        while (ptr != NULL) {
                linelen = strcspn(ptr, "\n");
                if (linelen == 0) goto EOH;
                
                if (  (!strncasecmp(ptr, "Content-type: text/x-vcard", 26))
                   || (!strncasecmp(ptr, "Content-type: text/vcard", 24)) ) {
                        /* Bingo!  A vCard is being deleted. */
                        vcard_extract_internet_addresses(msg, CtdlDirectoryDelUser);
                        ctdl_vcard_to_directory(msg, V2L_DELETE);
                }
                ptr = strchr((char *)ptr, '\n');
                if (ptr != NULL) ++ptr;
        }

EOH:    CtdlFreeMessage(msg);
}



/*
 * Get Valid Screen Names
 */
void cmd_gvsn(char *argbuf)
{
        if (CtdlAccessCheck(ac_logged_in)) return;

        cprintf("%d valid screen names:\n", LISTING_FOLLOWS);
        cprintf("%s\n", CC->user.fullname);
        if ( (!IsEmptyStr(CC->cs_inet_fn)) && (strcasecmp(CC->user.fullname, CC->cs_inet_fn)) ) {
                cprintf("%s\n", CC->cs_inet_fn);
        }
        cprintf("000\n");
}


/*
 * Get Valid Email Addresses
 */
void cmd_gvea(char *argbuf)
{
        int num_secondary_emails = 0;
        int i;
        char buf[256];

        if (CtdlAccessCheck(ac_logged_in)) return;

        cprintf("%d valid email addresses:\n", LISTING_FOLLOWS);
        if (!IsEmptyStr(CC->cs_inet_email)) {
                cprintf("%s\n", CC->cs_inet_email);
        }
        if (!IsEmptyStr(CC->cs_inet_other_emails)) {
                num_secondary_emails = num_tokens(CC->cs_inet_other_emails, '|');
                for (i=0; i<num_secondary_emails; ++i) {
                        extract_token(buf, CC->cs_inet_other_emails,i,'|',sizeof CC->cs_inet_other_emails);
                        cprintf("%s\n", buf);
                }
        }
        cprintf("000\n");
}




/*
 * Callback function for cmd_dvca() that hunts for vCard content types
 * and outputs any email addresses found within.
 */
void dvca_mime_callback(char *name, char *filename, char *partnum, char *disp,
                void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
                char *cbid, void *cbuserdata) {

        struct vCard *v;
        char displayname[256];
        int displayname_len;
        char emailaddr[256];
        int i;
        int has_commas = 0;

        if ( (strcasecmp(cbtype, "text/vcard")) && (strcasecmp(cbtype, "text/x-vcard")) ) {
                return;
        }

        v = vcard_load(content);
        if (v == NULL) return;

        extract_friendly_name(displayname, sizeof displayname, v);
        extract_inet_email_addrs(emailaddr, sizeof emailaddr, NULL, 0, v, 0);

        displayname_len = strlen(displayname);
        for (i=0; i<displayname_len; ++i) {
                if (displayname[i] == '\"') displayname[i] = ' ';
                if (displayname[i] == ';') displayname[i] = ',';
                if (displayname[i] == ',') has_commas = 1;
        }
        striplt(displayname);

        cprintf("%s%s%s <%s>\n",
                (has_commas ? "\"" : ""),
                displayname,
                (has_commas ? "\"" : ""),
                emailaddr
        );

        vcard_free(v);
}


/*
 * Back end callback function for cmd_dvca()
 *
 * It's basically just passed a list of message numbers, which we're going
 * to fetch off the disk and then pass along to the MIME parser via another
 * layer of callback...
 */
void dvca_callback(long msgnum, void *userdata) {
        struct CtdlMessage *msg = NULL;

        msg = CtdlFetchMessage(msgnum, 1);
        if (msg == NULL) return;
        mime_parser(msg->cm_fields['M'],
                NULL,
                *dvca_mime_callback,    /* callback function */
                NULL, NULL,
                NULL,                   /* user data */
                0
        );
        CtdlFreeMessage(msg);
}


/*
 * Dump VCard Addresses
 */
void cmd_dvca(char *argbuf)
{
        if (CtdlAccessCheck(ac_logged_in)) return;

        cprintf("%d addresses:\n", LISTING_FOLLOWS);
        CtdlForEachMessage(MSGS_ALL, 0, NULL, NULL, NULL, dvca_callback, NULL);
        cprintf("000\n");
}


/*
 * Query Directory
 */
void cmd_qdir(char *argbuf) {
        char citadel_addr[256];
        char internet_addr[256];

        if (CtdlAccessCheck(ac_logged_in)) return;

        extract_token(internet_addr, argbuf, 0, '|', sizeof internet_addr);

        if (CtdlDirectoryLookup(citadel_addr, internet_addr, sizeof citadel_addr) != 0) {
                cprintf("%d %s was not found.\n",
                        ERROR + NO_SUCH_USER, internet_addr);
                return;
        }

        cprintf("%d %s\n", CIT_OK, citadel_addr);
}

/*
 * Query Directory, in fact an alias to match postfix tcp auth.
 */
void check_get(void) {
        char internet_addr[256];

        char cmdbuf[SIZ];

        time(&CC->lastcmd);
        memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
        if (client_getln(cmdbuf, sizeof cmdbuf) < 1) {
                CtdlLogPrintf(CTDL_CRIT, "Client disconnected: ending session.\n");
                CC->kill_me = 1;
                return;
        }
        CtdlLogPrintf(CTDL_INFO, ": %s\n", cmdbuf);
        while (strlen(cmdbuf) < 3) strcat(cmdbuf, " ");

        if (strcasecmp(cmdbuf, "GET "));
        {
                struct recptypes *rcpt;
                char *argbuf = &cmdbuf[4];
                
                extract_token(internet_addr, argbuf, 0, '|', sizeof internet_addr);
                rcpt = validate_recipients(internet_addr, NULL, CHECK_EXISTANCE);
                if ((rcpt != NULL)&&
                        (
                         (*rcpt->recp_local != '\0')||
                         (*rcpt->recp_room != '\0')||
                         (*rcpt->recp_ignet != '\0')))
                {

                        cprintf("200 OK %s\n", internet_addr);
                        CtdlLogPrintf(CTDL_INFO, "sending 200 OK for the room %s\n", rcpt->display_recp);
                }
                else 
                {
                        cprintf("500 REJECT noone here by that name.\n");
                        
                        CtdlLogPrintf(CTDL_INFO, "sending 500 REJECT noone here by that name: %s\n", internet_addr);
                }
                if (rcpt != NULL) free_recipients(rcpt);
        }
}

void check_get_greeting(void) {
/* dummy function, we have no greeting in this verry simple protocol. */
}


/*
 * We don't know if the Contacts room exists so we just create it at login
 */
void vcard_create_room(void)
{
        struct ctdlroom qr;
        struct visit vbuf;

        /* Create the calendar room if it doesn't already exist */
        create_room(USERCONTACTSROOM, 4, "", 0, 1, 0, VIEW_ADDRESSBOOK);

        /* Set expiration policy to manual; otherwise objects will be lost! */
        if (lgetroom(&qr, USERCONTACTSROOM)) {
                CtdlLogPrintf(CTDL_ERR, "Couldn't get the user CONTACTS room!\n");
                return;
        }
        qr.QRep.expire_mode = EXPIRE_MANUAL;
        qr.QRdefaultview = VIEW_ADDRESSBOOK;    /* 2 = address book view */
        lputroom(&qr);

        /* Set the view to a calendar view */
        CtdlGetRelationship(&vbuf, &CC->user, &qr);
        vbuf.v_view = 2;        /* 2 = address book view */
        CtdlSetRelationship(&vbuf, &CC->user, &qr);

        return;
}




/*
 * When a user logs in...
 */
void vcard_session_login_hook(void) {
        struct vCard *v = NULL;

        v = vcard_get_user(&CC->user);
        extract_inet_email_addrs(CC->cs_inet_email, sizeof CC->cs_inet_email,
                                CC->cs_inet_other_emails, sizeof CC->cs_inet_other_emails,
                                v, 1);
        extract_friendly_name(CC->cs_inet_fn, sizeof CC->cs_inet_fn, v);
        vcard_free(v);

        vcard_create_room();
}


/* 
 * Turn an arbitrary RFC822 address into a struct vCard for possible
 * inclusion into an address book.
 */
struct vCard *vcard_new_from_rfc822_addr(char *addr) {
        struct vCard *v;
        char user[256], node[256], name[256], email[256], n[256], uid[256];
        int i;

        v = vcard_new();
        if (v == NULL) return(NULL);

        process_rfc822_addr(addr, user, node, name);
        vcard_set_prop(v, "fn", name, 0);

        vcard_fn_to_n(n, name, sizeof n);
        vcard_set_prop(v, "n", n, 0);

        snprintf(email, sizeof email, "%s@%s", user, node);
        vcard_set_prop(v, "email;internet", email, 0);

        snprintf(uid, sizeof uid, "collected: %s %s@%s", name, user, node);
        for (i=0; uid[i]; ++i) {
                if (isspace(uid[i])) uid[i] = '_';
                uid[i] = tolower(uid[i]);
        }
        vcard_set_prop(v, "UID", uid, 0);

        return(v);
}



/*
 * This is called by store_harvested_addresses() to remove from the
 * list any addresses we already have in our address book.
 */
void strip_addresses_already_have(long msgnum, void *userdata) {
        char *collected_addresses;
        struct CtdlMessage *msg = NULL;
        struct vCard *v;
        char *value = NULL;
        int i, j;
        char addr[256], user[256], node[256], name[256];

        collected_addresses = (char *)userdata;

        msg = CtdlFetchMessage(msgnum, 1);
        if (msg == NULL) return;
        v = vcard_load(msg->cm_fields['M']);
        CtdlFreeMessage(msg);

        i = 0;
        while (value = vcard_get_prop(v, "email", 1, i++, 0), value != NULL) {

                for (j=0; j<num_tokens(collected_addresses, ','); ++j) {
                        extract_token(addr, collected_addresses, j, ',', sizeof addr);

                        /* Remove the address if we already have it! */
                        process_rfc822_addr(addr, user, node, name);
                        snprintf(addr, sizeof addr, "%s@%s", user, node);
                        if (!strcasecmp(value, addr)) {
                                remove_token(collected_addresses, j, ',');
                        }
                }

        }

        vcard_free(v);
}



/*
 * Back end function for store_harvested_addresses()
 */
void store_this_ha(struct addresses_to_be_filed *aptr) {
        struct CtdlMessage *vmsg = NULL;
        long vmsgnum = (-1L);
        char *ser = NULL;
        struct vCard *v = NULL;
        char recipient[256];
        int i;

        /* First remove any addresses we already have in the address book */
        usergoto(aptr->roomname, 0, 0, NULL, NULL);
        CtdlForEachMessage(MSGS_ALL, 0, NULL, "^[Tt][Ee][Xx][Tt]/.*[Vv][Cc][Aa][Rr][Dd]$", NULL,
                strip_addresses_already_have, aptr->collected_addresses);

        if (!IsEmptyStr(aptr->collected_addresses))
           for (i=0; i<num_tokens(aptr->collected_addresses, ','); ++i) {

                /* Make a vCard out of each address */
                extract_token(recipient, aptr->collected_addresses, i, ',', sizeof recipient);
                striplt(recipient);
                v = vcard_new_from_rfc822_addr(recipient);
                if (v != NULL) {
                        vmsg = malloc(sizeof(struct CtdlMessage));
                        memset(vmsg, 0, sizeof(struct CtdlMessage));
                        vmsg->cm_magic = CTDLMESSAGE_MAGIC;
                        vmsg->cm_anon_type = MES_NORMAL;
                        vmsg->cm_format_type = FMT_RFC822;
                        vmsg->cm_fields['A'] = strdup("Citadel");
                        vmsg->cm_fields['E'] =  strdup(vcard_get_prop(v, "UID", 0, 0, 0));
                        ser = vcard_serialize(v);
                        if (ser != NULL) {
                                vmsg->cm_fields['M'] = malloc(strlen(ser) + 1024);
                                sprintf(vmsg->cm_fields['M'],
                                        "Content-type: " VCARD_MIME_TYPE
                                        "\r\n\r\n%s\r\n", ser);
                                free(ser);
                        }
                        vcard_free(v);

                        CtdlLogPrintf(CTDL_DEBUG, "Adding contact: %s\n", recipient);
                        vmsgnum = CtdlSubmitMsg(vmsg, NULL, aptr->roomname, QP_EADDR);
                        CtdlFreeMessage(vmsg);
                }
        }

        free(aptr->roomname);
        free(aptr->collected_addresses);
        free(aptr);
}


/*
 * When a user sends a message, we may harvest one or more email addresses
 * from the recipient list to be added to the user's address book.  But we
 * want to do this asynchronously so it doesn't keep the user waiting.
 */
void store_harvested_addresses(void) {

        struct addresses_to_be_filed *aptr = NULL;

        if (atbf == NULL) return;

        begin_critical_section(S_ATBF);
        while (atbf != NULL) {
                aptr = atbf;
                atbf = atbf->next;
                end_critical_section(S_ATBF);
                store_this_ha(aptr);
                begin_critical_section(S_ATBF);
        }
        end_critical_section(S_ATBF);
}


/* 
 * Function to output vCard data as plain text.  Nobody uses MSG0 anymore, so
 * really this is just so we expose the vCard data to the full text indexer.
 */
void vcard_fixed_output(char *ptr, int len) {
        char *serialized_vcard;
        struct vCard *v;
        char *key, *value;
        int i = 0;

        serialized_vcard = malloc(len + 1);
        safestrncpy(serialized_vcard, ptr, len+1);
        v = vcard_load(serialized_vcard);
        free(serialized_vcard);

        i = 0;
        while (key = vcard_get_prop(v, "", 0, i, 1), key != NULL) {
                value = vcard_get_prop(v, "", 0, i++, 0);
                cprintf("%s\n", value);
        }

        vcard_free(v);
}


const char *CitadelServiceDICT_TCP="DICT_TCP";

CTDL_MODULE_INIT(vcard)
{
        struct ctdlroom qr;
        char filename[256];
        FILE *fp;

        if (!threading)
        {
                CtdlRegisterSessionHook(vcard_session_login_hook, EVT_LOGIN);
                CtdlRegisterMessageHook(vcard_upload_beforesave, EVT_BEFORESAVE);
                CtdlRegisterMessageHook(vcard_upload_aftersave, EVT_AFTERSAVE);
                CtdlRegisterDeleteHook(vcard_delete_remove);
                CtdlRegisterProtoHook(cmd_regi, "REGI", "Enter registration info");
                CtdlRegisterProtoHook(cmd_greg, "GREG", "Get registration info");
                CtdlRegisterProtoHook(cmd_igab, "IGAB",
                                                "Initialize Global Address Book");
                CtdlRegisterProtoHook(cmd_qdir, "QDIR", "Query Directory");
                CtdlRegisterProtoHook(cmd_gvsn, "GVSN", "Get Valid Screen Names");
                CtdlRegisterProtoHook(cmd_gvea, "GVEA", "Get Valid Email Addresses");
                CtdlRegisterProtoHook(cmd_dvca, "DVCA", "Dump VCard Addresses");
                CtdlRegisterUserHook(vcard_newuser, EVT_NEWUSER);
                CtdlRegisterUserHook(vcard_purge, EVT_PURGEUSER);
                CtdlRegisterNetprocHook(vcard_extract_from_network);
                CtdlRegisterSessionHook(store_harvested_addresses, EVT_TIMER);
                CtdlRegisterFixedOutputHook("text/x-vcard", vcard_fixed_output);
                CtdlRegisterFixedOutputHook("text/vcard", vcard_fixed_output);

                /* Create the Global ADdress Book room if necessary */
                create_room(ADDRESS_BOOK_ROOM, 3, "", 0, 1, 0, VIEW_ADDRESSBOOK);

                /* Set expiration policy to manual; otherwise objects will be lost! */
                if (!lgetroom(&qr, ADDRESS_BOOK_ROOM)) {
                        qr.QRep.expire_mode = EXPIRE_MANUAL;
                        qr.QRdefaultview = VIEW_ADDRESSBOOK;    /* 2 = address book view */
                        lputroom(&qr);

                        /*
                         * Also make sure it has a netconfig file, so the networker runs
                         * on this room even if we don't share it with any other nodes.
                         * This allows the CANCEL messages (i.e. "Purge this vCard") to be
                         * purged.
                         */
                        assoc_file_name(filename, sizeof filename, &qr, ctdl_netcfg_dir);
                        fp = fopen(filename, "a");
                        if (fp != NULL) fclose(fp);
                        chown(filename, CTDLUID, (-1));
                }

                /* for postfix tcpdict */
                CtdlRegisterServiceHook(config.c_pftcpdict_port,        /* Postfix */
                                        NULL,
                                        check_get_greeting,
                                        check_get,
                                        NULL,
                                        CitadelServiceDICT_TCP);
        }
        
        /* return our Subversion id for the Log */
        return "$Id$";
}