path: root/addressbook/util/eab-book-util.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * eab-util.c
 *
 * Copyright (C) 2001-2003 Ximian, Inc.
 *
 * Authors: Jon Trowbridge <trow@ximian.com>
 *          Chris Toshok <toshok@ximian.com>
 */

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 */

#include <config.h>
#include "eab-book-util.h"

#include <string.h>
#include <glib.h>
#include <glib-object.h>
#include <e-util/e-config-listener.h>

EConfigListener *
eab_get_config_database ()
{
    static EConfigListener *config_db;

    if (config_db == NULL)
        config_db = e_config_listener_new ();

    return config_db;
}

/*
 *
 * Specialized Queries
 *
 */

static char*
escape (const char *str)
{
    GString *s = g_string_new (NULL);
    const char *p = str;

    while (*p) {
        if (*p == '\\')
            g_string_append_len (s, "\\\\", 2);
        else if (*p == '"')
            g_string_append_len (s, "\\\"", 2);
        else
            g_string_append_c (s, *p);

        p ++;
    }

    return g_string_free (s, FALSE);
}

guint
eab_name_and_email_query (EBook *book,
              const gchar *name,
              const gchar *email,
              EBookListCallback cb,
              gpointer closure)
{
    gchar *email_query=NULL, *name_query=NULL;
    EBookQuery *query;
    guint tag;
    char *escaped_name, *escaped_email;

    g_return_val_if_fail (book && E_IS_BOOK (book), 0);
    g_return_val_if_fail (cb != NULL, 0);

    if (name && !*name)
        name = NULL;
    if (email && !*email)
        email = NULL;

    if (name == NULL && email == NULL)
        return 0;

    escaped_name = name ? escape (name) : NULL;
    escaped_email = email ? escape (email) : NULL;

    /* Build our e-mail query.
     * We only query against the username part of the address, to avoid not matching
     * fred@foo.com and fred@mail.foo.com.  While their may be namespace collisions
     * in the usernames of everyone out there, it shouldn't be that bad.  (Famous last words.)
     * But if name is missing we query against complete email id to avoid matching emails like 
     * users@foo.org with users@bar.org 
     */
    if (escaped_email) {
        const gchar *t = escaped_email;
        while (*t && *t != '@')
            ++t;
        if (*t == '@' && escaped_name) {
            email_query = g_strdup_printf ("(beginswith \"email\" \"%.*s@\")", (int)(t-escaped_email), escaped_email);

        } else {
            email_query = g_strdup_printf ("(beginswith \"email\" \"%s\")", escaped_email);
        }
    }

    /* Build our name query.*/
    
    if (escaped_name)
        name_query = g_strdup_printf ("(or (beginswith \"file_as\" \"%s\") (beginswith \"full_name\" \"%s\"))", escaped_name, escaped_name);

    /* Assemble our e-mail & name queries */
    if (email_query && name_query) {
        char *full_query = g_strdup_printf ("(and %s %s)", email_query, name_query);
        query = e_book_query_from_string (full_query);
        g_free (full_query);
    }
    else if (email_query) {
        query = e_book_query_from_string (email_query);
    }
    else if (name_query) {
        query = e_book_query_from_string (name_query);
    }
    else
        return 0;

    tag = e_book_async_get_contacts (book, query, cb, closure);

    g_free (email_query);
    g_free (name_query);
    g_free (escaped_email);
    g_free (escaped_name);
    e_book_query_unref (query);

    return tag;
}

/*
 * Simple nickname query
 */
guint
eab_nickname_query (EBook                 *book,
            const char            *nickname,
            EBookListCallback      cb,
            gpointer               closure)
{
    EBookQuery *query;
    char *query_string;
    guint retval;

    g_return_val_if_fail (E_IS_BOOK (book), 0);
    g_return_val_if_fail (nickname != NULL, 0);

    /* The empty-string case shouldn't generate a warning. */
    if (! *nickname)
        return 0;

    query_string = g_strdup_printf ("(is \"nickname\" \"%s\")", nickname);

    query = e_book_query_from_string (query_string);

    retval = e_book_async_get_contacts (book, query, cb, closure);

    g_free (query_string);
    e_book_query_unref (query);

    return retval;
}

/* Copied from camel_strstrcase */
static char *
eab_strstrcase (const char *haystack, const char *needle)
{
    /* find the needle in the haystack neglecting case */
    const char *ptr;
    guint len;
    
    g_return_val_if_fail (haystack != NULL, NULL);
    g_return_val_if_fail (needle != NULL, NULL);
    
    len = strlen (needle);
    if (len > strlen (haystack))
        return NULL;
    
    if (len == 0)
        return (char *) haystack;
    
    for (ptr = haystack; *(ptr + len - 1) != '\0'; ptr++)
        if (!g_ascii_strncasecmp (ptr, needle, len))
            return (char *) ptr;
    
    return NULL;
}


GList*
eab_contact_list_from_string (const char *str)
{
    GList *contacts = NULL;
    GString *gstr = g_string_new (NULL);
    char *str_stripped;
    char *p = (char*)str;
    char *q;

    if (!p)
        return NULL;

    if (!strncmp (p, "Book: ", 6)) {
        p = strchr (p, '\n');
        if (!p) {
            g_warning (G_STRLOC ": Got book but no newline!");
            return NULL;
        }
        p++;
    }

    while (*p) {
        if (*p != '\r') g_string_append_c (gstr, *p);
        
        p++;
    }

    q = p = str_stripped = g_string_free (gstr, FALSE);

    /* Note: The VCard standard says
     *
     * vcard = "BEGIN" [ws] ":" [ws] "VCARD" [ws] 1*CRLF 
     *         items *CRLF "END" [ws] ":" [ws] "VCARD"
     *
     * which means we can have whitespace (e.g. "BEGIN : VCARD"). So we're not being
     * fully compliant here, although I'm not sure it matters. The ideal solution
     * would be to have a vcard parsing function that returned the end of the vcard
     * parsed. Arguably, contact list parsing should all be in libebook's e-vcard.c,
     * where we can do proper parsing and validation without code duplication. */
    
    for (p = eab_strstrcase (p, "BEGIN:VCARD"); p; p = eab_strstrcase (q, "\nBEGIN:VCARD")) {
        gchar *card_str;

        if (*p == '\n')
            p++;

        for (q = eab_strstrcase (p, "END:VCARD"); q; q = eab_strstrcase (q, "END:VCARD")) {
            gchar *temp;

            q += 9;
            temp = q;
            temp += strspn (temp, "\r\n\t ");

            if (*temp == '\0' || !g_ascii_strncasecmp (temp, "BEGIN:VCARD", 11))
                break;  /* Found the outer END:VCARD */
        }

        if (!q)
            break;

        card_str = g_strndup (p, q - p);
        contacts = g_list_append (contacts, e_contact_new_from_vcard (card_str));
        g_free (card_str);
    }

    g_free (str_stripped);

    return contacts;
}

char*
eab_contact_list_to_string (GList *contacts)
{
    GString *str = g_string_new ("");
    GList *l;

    for (l = contacts; l; l = l->next) {
        EContact *contact = l->data;
        char *vcard_str = e_vcard_to_string (E_VCARD (contact), EVC_FORMAT_VCARD_30);

        g_string_append (str, vcard_str);
        if (l->next)
            g_string_append (str, "\r\n\r\n");
    }

    return g_string_free (str, FALSE);
}

gboolean
eab_book_and_contact_list_from_string (const char *str, EBook **book, GList **contacts)
{
    const char *s0, *s1;
    char *uri;

    g_return_val_if_fail (str != NULL, FALSE);
    g_return_val_if_fail (book != NULL, FALSE);
    g_return_val_if_fail (contacts != NULL, FALSE);

    *contacts = eab_contact_list_from_string (str);

    if (!strncmp (str, "Book: ", 6)) {
        s0 = str + 6;
        s1 = strchr (str, '\r');

        if (!s1)
            s1 = strchr (str, '\n');
    } else {
        s0 = NULL;
        s1 = NULL;
    }

    if (!s0 || !s1) {
        *book = NULL;
        return FALSE;
    }

    uri = g_strndup (s0, s1 - s0);
    *book = e_book_new_from_uri (uri, NULL);
    g_free (uri);

    return *book ? TRUE : FALSE;
}

char *
eab_book_and_contact_list_to_string (EBook *book, GList *contacts)
{
    char *s0, *s1;

    s0 = eab_contact_list_to_string (contacts);
    if (!s0)
        s0 = g_strdup ("");

    if (book)
        s1 = g_strconcat ("Book: ", e_book_get_uri (book), "\r\n", s0, NULL);
    else
        s1 = g_strdup (s0);

    g_free (s0);
    return s1;
}

#ifdef notyet
/*
 *  Convenience routine to check for addresses in the local address book.
 */

typedef struct _HaveAddressInfo HaveAddressInfo;
struct _HaveAddressInfo {
    gchar *email;
    EBookHaveAddressCallback cb;
    gpointer closure;
};

static void
have_address_query_cb (EBook *book, EBookSimpleQueryStatus status, const GList *contacts, gpointer closure)
{
    HaveAddressInfo *info = (HaveAddressInfo *) closure;
    
    info->cb (book, 
          info->email,
          contacts && (status == E_BOOK_ERROR_OK) ? E_CONTACT (contacts->data) : NULL,
          info->closure);

    g_free (info->email);
    g_free (info);
}

static void
have_address_book_open_cb (EBook *book, gpointer closure)
{
    HaveAddressInfo *info = (HaveAddressInfo *) closure;

    if (book) {

        e_book_name_and_email_query (book, NULL, info->email, have_address_query_cb, info);

    } else {

        info->cb (NULL, info->email, NULL, info->closure);

        g_free (info->email);
        g_free (info);

    }
}

void
eab_query_address_default (const gchar *email,
               EABHaveAddressCallback cb,
               gpointer closure)
{
    HaveAddressInfo *info;

    g_return_if_fail (email != NULL);
    g_return_if_fail (cb != NULL);

    info = g_new0 (HaveAddressInfo, 1);
    info->email = g_strdup (email);
    info->cb = cb;
    info->closure = closure;

    e_book_use_default_book (have_address_book_open_cb, info);
}
#endif

/* bad place for this i know. */
int
e_utf8_casefold_collate_len (const gchar *str1, const gchar *str2, int len)
{
    gchar *s1 = g_utf8_casefold(str1, len);
    gchar *s2 = g_utf8_casefold(str2, len);
    int rv;

    rv = g_utf8_collate (s1, s2);

    g_free (s1);
    g_free (s2);

    return rv;
}

int
e_utf8_casefold_collate (const gchar *str1, const gchar *str2)
{
    return e_utf8_casefold_collate_len (str1, str2, -1);
}