path: root/mail/mail-tools.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* 
 * Authors: 
 *  Dan Winship <danw@ximian.com>
 *  Peter Williams <peterw@ximian.com>
 *  Jeffrey Stedfast <fejj@ximian.com>
 *
 * Copyright 2000 Ximian, Inc. (www.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
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <unistd.h>
#include <pthread.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>

#include <gconf/gconf.h>
#include <gconf/gconf-client.h>

#include <camel/camel.h>
#include <camel/camel-vee-folder.h>

#include <filter/vfolder-rule.h>
#include <filter/vfolder-context.h>
#include <filter/filter-option.h>
#include <filter/filter-input.h>

#include "e-util/e-meta.h"

#include "mail-vfolder.h"
#include "mail.h" /*session*/
#include "mail-format.h"
#include "mail-tools.h"
#include "mail-local.h"
#include "mail-mt.h"
#include "mail-folder-cache.h"

/* **************************************** */

CamelFolder *
mail_tool_get_local_inbox (CamelException *ex)
{
    CamelFolder *folder;
    char *url;
    
    url = g_strdup_printf("file://%s/local/Inbox", evolution_dir);
    folder = mail_tool_uri_to_folder (url, 0, ex);
    g_free (url);
    
    return folder;
}

CamelFolder *
mail_tool_get_inbox (const gchar *url, CamelException *ex)
{
    CamelStore *store;
    CamelFolder *folder;
    
    store = camel_session_get_store (session, url, ex);
    if (!store)
        return NULL;
    
    folder = camel_store_get_inbox (store, ex);
    camel_object_unref (store);
    
    return folder;
}

CamelFolder *
mail_tool_get_trash (const gchar *url, int connect, CamelException *ex)
{
    CamelStore *store;
    CamelFolder *trash;
    
    if (connect)
        store = camel_session_get_store (session, url, ex);
    else
        store = (CamelStore *) camel_session_get_service (session, url, CAMEL_PROVIDER_STORE, ex);
    
    if (!store)
        return NULL;
    
    if (connect || ((CamelService *) store)->status == CAMEL_SERVICE_CONNECTED)
        trash = camel_store_get_trash (store, ex);
    else
        trash = NULL;
    
    camel_object_unref (store);
    
    return trash;
}

static char *
mail_tool_get_local_movemail_path (const unsigned char *uri)
{
    unsigned char *safe_uri, *c;
    char *path;
    
    safe_uri = g_strdup (uri);
    for (c = safe_uri; *c; c++)
        if (strchr ("/:;=|%&#!*^()\\, ", *c) || !isprint ((int) *c))
            *c = '_';
    
    path = g_strdup_printf ("%s/local/Inbox/movemail.%s", evolution_dir, safe_uri);
    g_free (safe_uri);
    
    return path;
}

char *
mail_tool_do_movemail (const char *source_url, CamelException *ex)
{
    char *dest_path;
    struct stat sb;
    CamelURL *uri;

    uri = camel_url_new(source_url, ex);
    if (uri == NULL)
        return NULL;

    if (strcmp(uri->protocol, "mbox") != 0) {
        /* FIXME: use right text here post 1.4 */
        camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_URL_INVALID,
                      _("Could not parse URL `%s'"),
                      source_url);
        camel_url_free(uri);
        return NULL;
    }
    
    /* Set up our destination. */
    dest_path = mail_tool_get_local_movemail_path (source_url);
    
    /* Movemail from source (source_url) to dest_path */
    camel_movemail (uri->path, dest_path, ex);
    camel_url_free(uri);

    if (stat (dest_path, &sb) < 0 || sb.st_size == 0) {
        unlink (dest_path); /* Clean up the movemail.foo file. */
        g_free (dest_path);
        return NULL;
    }
    
    if (camel_exception_is_set (ex)) {
        g_free (dest_path);
        return NULL;
    }
    
    return dest_path;
}

char *
mail_tool_generate_forward_subject (CamelMimeMessage *msg)
{
    const char *subject;
    char *fwd_subj;
    const int max_subject_length = 1024;
    
    subject = camel_mime_message_get_subject(msg);
    
    if (subject && *subject) {
        /* Truncate insanely long subjects */
        if (strlen (subject) < max_subject_length) {
            fwd_subj = g_strdup_printf ("[Fwd: %s]", subject);
        } else {
            /* We can't use %.*s because it depends on the locale being C/POSIX
               or UTF-8 to work correctly in glibc */
            /*fwd_subj = g_strdup_printf ("[Fwd: %.*s...]", max_subject_length, subject);*/
            fwd_subj = g_malloc (max_subject_length + 11);
            memcpy (fwd_subj, "[Fwd: ", 6);
            memcpy (fwd_subj + 6, subject, max_subject_length);
            memcpy (fwd_subj + 6 + max_subject_length, "...]", 5);
        }
    } else {
        const CamelInternetAddress *from;
        char *fromstr;
        
        from = camel_mime_message_get_from (msg);
        if (from) {
            fromstr = camel_address_format (CAMEL_ADDRESS (from));
            fwd_subj = g_strdup_printf ("[Fwd: %s]", fromstr);
            g_free (fromstr);
        } else
            fwd_subj = g_strdup ("[Fwd: No Subject]");
    }
    
    return fwd_subj;
}

XEvolution *
mail_tool_remove_xevolution_headers (CamelMimeMessage *message)
{
    XEvolution *xev;
    
    xev = g_new (XEvolution, 1);
    xev->flags = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution"));
    xev->source = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Source"));
    xev->transport = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Transport"));
    xev->account = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Account"));
    xev->fcc = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc"));
    xev->format = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-Format"));
    xev->postto = g_strdup (camel_medium_get_header (CAMEL_MEDIUM (message), "X-Evolution-PostTo"));
    
    /* rip off the X-Evolution* headers */
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Source");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Transport");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Account");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-Format");
    camel_medium_remove_header (CAMEL_MEDIUM (message), "X-Evolution-PostTo");
    
    return xev;
}

void
mail_tool_restore_xevolution_headers (CamelMimeMessage *message, XEvolution *xev)
{
    if (xev->flags)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution", xev->flags);
    if (xev->source)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-Source", xev->source);
    if (xev->transport)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-Transport", xev->transport);
    if (xev->account)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-Account", xev->account);
    if (xev->fcc)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-Fcc", xev->fcc);
    if (xev->format)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-Format", xev->format);
    if (xev->postto)
        camel_medium_set_header (CAMEL_MEDIUM (message), "X-Evolution-PostTo", xev->postto);
}

void
mail_tool_destroy_xevolution (XEvolution *xev)
{
    g_free (xev->flags);
    g_free (xev->source);
    g_free (xev->transport);
    g_free (xev->account);
    g_free (xev->format);
    g_free (xev->fcc);
    g_free (xev->postto);
    g_free (xev);
}

CamelMimePart *
mail_tool_make_message_attachment (CamelMimeMessage *message)
{
    CamelMimePart *part;
    const char *subject;
    XEvolution *xev;
    char *desc;
    
    subject = camel_mime_message_get_subject (message);
    if (subject)
        desc = g_strdup_printf (_("Forwarded message - %s"), subject);
    else
        desc = g_strdup (_("Forwarded message"));
    
    /* rip off the X-Evolution headers */
    xev = mail_tool_remove_xevolution_headers (message);
    mail_tool_destroy_xevolution (xev);
    
    /* remove Bcc headers */
    while (camel_medium_get_header (CAMEL_MEDIUM (message), "Bcc"))
        camel_medium_remove_header (CAMEL_MEDIUM (message), "Bcc");
    
    part = camel_mime_part_new ();
    camel_mime_part_set_disposition (part, "inline");
    camel_mime_part_set_description (part, desc);
    camel_medium_set_content_object (CAMEL_MEDIUM (part),
                     CAMEL_DATA_WRAPPER (message));
    camel_mime_part_set_content_type (part, "message/rfc822");
    g_free (desc);
    
    return part;
}

CamelFolder *
mail_tool_uri_to_folder (const char *uri, guint32 flags, CamelException *ex)
{
    CamelURL *url;
    CamelStore *store = NULL;
    CamelFolder *folder = NULL;
    int offset = 0;
    
    g_return_val_if_fail (uri != NULL, NULL);
    
    /* This hack is still needed for file:/ since it's its own EvolutionStorage type */
    if (!strncmp (uri, "vtrash:", 7))
        offset = 7;
    
    url = camel_url_new (uri + offset, ex);
    if (!url) {
        return NULL;
    }

    store = camel_session_get_store (session, uri + offset, ex);
    if (store) {
        const char *name;
        
        /* if we have a fragment, then the path is actually used by the store,
           so the fragment is the path to the folder instead */
        if (url->fragment) {
            name = url->fragment;
        } else {
            if (url->path && *url->path)
                name = url->path + 1;
            else
                name = "";
        }
        
        if (offset)
            folder = camel_store_get_trash (store, ex);
        else
            folder = camel_store_get_folder (store, name, flags, ex);
        camel_object_unref (store);
    }
    
    if (folder)
        mail_note_folder (folder);
    
    camel_url_free (url);
    
    return folder;
}

/**
 * mail_tool_quote_message:
 * @message: mime message to quote
 * @fmt: credits format - example: "On %s, %s wrote:\n"
 * @Varargs: arguments
 *
 * Returns an allocated buffer containing the quoted message.
 */
gchar *
mail_tool_quote_message (CamelMimeMessage *message, const char *fmt, ...)
{
    CamelDataWrapper *contents;
    gboolean want_plain;
    char *text, *colour;
    GConfClient *gconf;
    
    gconf = gconf_client_get_default ();
    
    contents = camel_medium_get_content_object (CAMEL_MEDIUM (message));
    /* We pass "want_plain" for "cite", since if it's HTML, we'll
     * do the citing ourself below.
     */
    /* FIXME the citing logic has changed and we basically never want_plain
     * to be true now, but I don't want to remove all that logic until I
     * am sure --Larry
     */
    want_plain = FALSE;
    text = mail_get_message_body (contents, want_plain, want_plain);
    
    /* Set the quoted reply text. */
    if (text) {
        char *sig, *p, *ret_text, *credits = NULL;
        
        /* look for the signature and strip it off */
        sig = text;
            while ((p = strstr (sig, "\n-- \n")))
            sig = p + 1;
        
        if (sig != text)
            *sig = '\0';
        
        /* create credits */
        if (fmt) {
            va_list ap;
            
            va_start (ap, fmt);
            credits = g_strdup_vprintf (fmt, ap);
            va_end (ap);
        }
        
        colour = gconf_client_get_string (gconf, "/apps/evolution/mail/display/citation_colour", NULL);
        
        ret_text = g_strdup_printf ("%s<!--+GtkHTML:<DATA class=\"ClueFlow\" key=\"orig\" value=\"1\">-->"
                        "<font color=\"%s\">\n%s%s%s</font>"
                        "<!--+GtkHTML:<DATA class=\"ClueFlow\" clear=\"orig\">-->",
                        credits ? credits : "",
                        colour ? colour : "#737373",
                        want_plain ? "" : "<blockquote type=cite><i>",
                        text,
                        want_plain ? "" : "</i></blockquote>");
        
        g_free (text);
        g_free (colour);
        g_free (credits);
        
        return ret_text;
    }
    
    return NULL;
}


/**
 * mail_tool_forward_message:
 * @message: mime message to forward
 * @quoted: whether to forwarded it quoted (%TRUE) or inline (%FALSE)
 *
 * Returns an allocated buffer containing the forwarded message.
 */
gchar *
mail_tool_forward_message (CamelMimeMessage *message, gboolean quoted)
{
    char *title, *body, *ret;
    gboolean send_html;
    GConfClient *gconf;
    
    gconf = gconf_client_get_default ();
    send_html = gconf_client_get_bool (gconf, "/apps/evolution/mail/composer/send_html", NULL);
    
    body = mail_get_message_body (CAMEL_DATA_WRAPPER (message), !send_html, quoted);
    title = _("Forwarded Message");
    ret = g_strdup_printf ("-----%s-----<br>%s", title, body ? body : "");
    g_free (body);
    
    return ret;
}


/**
 * mail_tools_x_evolution_message_parse:
 * @in: GtkSelectionData->data
 * @inlen: GtkSelectionData->length
 * @uids: pointer to a gptrarray that will be filled with uids on success
 *
 * Parses the GtkSelectionData and returns a CamelFolder and a list of
 * UIDs specified by the selection.
 **/
CamelFolder *
mail_tools_x_evolution_message_parse (char *in, unsigned int inlen, GPtrArray **uids)
{
    /* format: "uri\0uid1\0uid2\0uid3\0...\0uidn" */
    char *inptr, *inend;
    CamelFolder *folder;
    
    if (in == NULL)
        return NULL;
    
    folder = mail_tool_uri_to_folder (in, 0, NULL);
    
    if (!folder)
        return NULL;
    
    /* split the uids */
    inend = in + inlen;
    inptr = in + strlen (in) + 1;
    *uids = g_ptr_array_new ();
    while (inptr < inend) {
        char *start = inptr;
        
        while (inptr < inend && *inptr)
            inptr++;
        
        g_ptr_array_add (*uids, g_strndup (start, inptr - start));
        inptr++;
    }
    
    return folder;
}


char *
mail_tools_folder_to_url (CamelFolder *folder)
{
    char *service_url, *url;
    const char *full_name;
    CamelService *service;
    
    g_return_val_if_fail (CAMEL_IS_FOLDER (folder), NULL);
    
    full_name = folder->full_name;
    while (*full_name == '/')
        full_name++;
    
    service = (CamelService *) folder->parent_store;
    service_url = camel_url_to_string (service->url, CAMEL_URL_HIDE_ALL);
    url = g_strdup_printf ("%s%s%s", service_url, service_url[strlen (service_url)-1] != '/' ? "/" : "",
                   full_name);
    g_free (service_url);
    
    return url;
}

static char *meta_data_key(const char *uri, char **pathp)
{
    CamelURL *url;
    GString *path;
    const char *key;
    char *p, c;

    url = camel_url_new(uri, NULL);

    if (url == NULL) {
        g_warning("Trying to retrieve meta-data for unparsable uri: %s", uri);
        *pathp = g_build_path(evolution_dir, "meta/unknown", NULL);

        return g_strdup("folder");
    }

    path = g_string_new(evolution_dir);
    g_string_append_printf(path, "/meta/%s/", url->protocol);

    if (url->host && url->host[0]) {
        if (url->user)
            g_string_append_printf(path, "%s@", url->user);
        g_string_append(path, url->host);
        if (url->port)
            g_string_append_printf(path, ":%d", url->port);
        key = url->path;
    } else if (url->path) {
        if (url->fragment) {
            p = url->path;
            while ((c = *p++)) {
                if (c == '/')
                    c = '_';
                g_string_append_c(path, c);
            }
            key = url->fragment;
        } else {
            key = url->path;
        }
    }

    if (key == NULL)
        key = uri;

    p = g_strdup(key);
    camel_url_free(url);
    *pathp = path->str;
    g_string_free(path, FALSE);

    return p;
}

EMeta *
mail_tool_get_meta_data(const char *uri)
{
    char *path, *key;
    EMeta *meta;

    key = meta_data_key(uri, &path);
    meta = e_meta_data_find(path, key);
    g_free(key);
    g_free(path);

    return meta;
}

void
mail_tool_delete_meta_data(const char *uri)
{
    char *path, *key;

    key = meta_data_key(uri, &path);
    e_meta_data_delete(path, key);
    g_free(key);
    g_free(path);
}