src/partial_download.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto
   4  * This file (C) 2004 Colin Leroy
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  */
  20
  21 /* Partial download:
  22  * A mail which has been completely downloaded will have no special headers,
  23  * and its entry in the uidl file will end by 0 (POP3_TOTALLY_RECEIVED);
  24  *
  25  * A mail which has been partially downloaded will have some special headers,
  26  * and its entry in the uidl file will first be 1 (POP3_PARTIALLY_RECEIVED);
  27  * the special headers will be including "SC-Marked-For-Download" which can
  28  * have three values:
  29  * 0 (POP3_PARTIAL_DLOAD_UNKN) meaning that the user has not yet chosen to
  30  *  download the mail or let it be deleted - this header is absent until the
  31  *  user first chooses an action
  32  * 1 (POP3_PARTIAL_DLOAD_DLOAD) meaning that the user wants to finish
  33  *  downloading the mail
  34  * 2 (POP3_PARTIAL_DLOAD_DELE) meaning that the user does not want to finish
  35  *  downloading the mail
  36  * When updating this header to POP3_PARTIAL_DLOAD_DLOAD, the uidl line of
  37  * this mail will end with the mail's physical path, which Sylpheed will remove
  38  * after having downloaded the complete mail. msg->partial_recv will equal
  39  * 2 (POP3_MUST_COMPLETE_RECV).
  40  * When updating this header to POP3_PARTIAL_DLOAD_DELE, the uidl line of
  41  * this mail will be 0 (POP3_TOTALLY_RECEIVED), which will let Sylpheed delete
  42  * this mail from the server as soon as the leave_time preference specifies.
  43  */
  44
  45 #ifdef HAVE_CONFIG_H
  46 #  include "config.h"
  47 #endif
  48
  49 #include <glib.h>
  50 #include <glib/gi18n.h>
  51 #include <stdio.h>
  52 #include <string.h>
  53 #include <stdarg.h>
  54 #include <ctype.h>
  55 #include <unistd.h>
  56 #include <time.h>
  57 #include <errno.h>
  58
  59 #include "partial_download.h"
  60 #include "utils.h"
  61 #include "pop.h"
  62 #include "folder.h"
  63 #include "procheader.h"
  64 #include "msgcache.h"
  65
  66 int partial_msg_in_uidl_list(MsgInfo *msginfo)
  67 {
  68         gchar *path;
  69         FILE *fp;
  70         gchar buf[POPBUFSIZE];
  71         gchar uidl[POPBUFSIZE];
  72         time_t recv_time;
  73         time_t now;
  74         gint partial_recv;
  75         gchar *sanitized_uid = g_strdup(msginfo->account_login);
  76
  77         subst_for_filename(sanitized_uid);
  78
  79         if (!msginfo->account_server
  80         ||  !msginfo->account_login
  81         ||  !msginfo->partial_recv)
  82                 return FALSE;
  83
  84         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  85                            "uidl", G_DIR_SEPARATOR_S, msginfo->account_server,
  86                            "-", msginfo->account_login, NULL);
  87         if ((fp = g_fopen(path, "rb")) == NULL) {
  88                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
  89                 g_free(path);
  90                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  91                                    "uidl-", msginfo->account_server,
  92                                    "-", sanitized_uid, NULL);
  93                 if ((fp = g_fopen(path, "rb")) == NULL) {
  94                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
  95                         g_free(sanitized_uid);
  96                         g_free(path);
  97                         return FALSE;
  98                 }
  99         }
 100         g_free(sanitized_uid);
 101         g_free(path);
 102
 103         now = time(NULL);
 104
 105         while (fgets(buf, sizeof(buf), fp) != NULL) {
 106                 gchar tmp[POPBUFSIZE];
 107                 strretchomp(buf);
 108                 recv_time = RECV_TIME_NONE;
 109                 partial_recv = POP3_TOTALLY_RECEIVED;
 110
 111                 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
 112                            tmp) < 2) {
 113                         if (sscanf(buf, "%s", uidl) != 1)
 114                                 continue;
 115                         else {
 116                                 recv_time = now;
 117                         }
 118                 }
 119                 if (!strcmp(uidl, msginfo->partial_recv)) {
 120                         fclose(fp);
 121                         return TRUE;
 122                 }
 123         }
 124
 125         fclose(fp);
 126         return FALSE;
 127 }
 128
 129 static int partial_uidl_mark_mail(MsgInfo *msginfo, int download)
 130 {
 131         gchar *path;
 132         gchar *pathnew;
 133         FILE *fp;
 134         FILE *fpnew;
 135         gchar buf[POPBUFSIZE];
 136         gchar uidl[POPBUFSIZE];
 137         time_t recv_time;
 138         time_t now;
 139         int len;
 140         int start = TRUE;
 141         gchar partial_recv[POPBUFSIZE];
 142         int err = -1;
 143         gchar *filename;
 144         MsgInfo *tinfo;
 145         gchar *sanitized_uid = NULL;
 146
 147         filename = procmsg_get_message_file_path(msginfo);
 148         if (!filename) {
 149                 g_warning("can't get message file path.\n");
 150                 return err;
 151         }
 152         tinfo = procheader_parse_file(filename, msginfo->flags, TRUE, TRUE);
 153
 154         sanitized_uid = g_strdup(tinfo->account_login);
 155         subst_for_filename(sanitized_uid);
 156
 157         if (!tinfo->account_server
 158         ||  !tinfo->account_login
 159         ||  !tinfo->partial_recv) {
 160                 goto bail;
 161         }
 162         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 163                            "uidl", G_DIR_SEPARATOR_S, tinfo->account_server,
 164                            "-", sanitized_uid, NULL);
 165
 166         if ((fp = g_fopen(path, "rb")) == NULL) {
 167                 perror("fopen1");
 168                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 169                 g_free(path);
 170                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 171                                    "uidl-", tinfo->account_server,
 172                                    "-", tinfo->account_login, NULL);
 173                 if ((fp = g_fopen(path, "rb")) == NULL) {
 174                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 175                         g_free(path);
 176                         goto bail;
 177                 }
 178         }
 179
 180         pathnew = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 181                            "uidl", G_DIR_SEPARATOR_S, tinfo->account_server,
 182                            "-", sanitized_uid, ".new", NULL);
 183
 184         g_free(sanitized_uid);
 185
 186         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 187                 perror("fopen2");
 188                 fclose(fp);
 189                 g_free(pathnew);
 190                 goto bail;
 191         }
 192
 193         now = time(NULL);
 194
 195         while (fgets(buf, sizeof(buf), fp) != NULL) {
 196                 strretchomp(buf);
 197                 recv_time = RECV_TIME_NONE;
 198                 sprintf(partial_recv,"0");
 199
 200                 if (sscanf(buf, "%s\t%ld\t%s",
 201                            uidl, (long int *) &recv_time, partial_recv) < 2) {
 202                         if (sscanf(buf, "%s", uidl) != 1)
 203                                 continue;
 204                         else {
 205                                 recv_time = now;
 206                         }
 207                 }
 208                 if (strcmp(tinfo->partial_recv, uidl)) {
 209                         fprintf(fpnew, "%s\t%ld\t%s\n",
 210                                 uidl, (long int) recv_time, partial_recv);
 211                 } else {
 212                         gchar *stat = NULL;
 213                         if (download == POP3_PARTIAL_DLOAD_DLOAD) {
 214                                 gchar *folder_id = folder_item_get_identifier(
 215                                                         msginfo->folder);
 216                                 stat = g_strdup_printf("%s:%d",
 217                                         folder_id, msginfo->msgnum);
 218                                 g_free(folder_id);
 219                         }
 220                         else if (download == POP3_PARTIAL_DLOAD_UNKN)
 221                                 stat = g_strdup("1");
 222                         else if (download == POP3_PARTIAL_DLOAD_DELE)
 223                                 stat = g_strdup("0");
 224
 225                         fprintf(fpnew, "%s\t%ld\t%s\n",
 226                                 uidl, (long int) recv_time, stat);
 227                         g_free(stat);
 228                 }
 229         }
 230         fclose(fpnew);
 231         fclose(fp);
 232
 233         move_file(pathnew, path, TRUE);
 234
 235         g_free(path);
 236         g_free(pathnew);
 237
 238         if ((fp = g_fopen(filename,"rb")) == NULL) {
 239                 perror("fopen3");
 240                 goto bail;
 241         }
 242         pathnew = g_strdup_printf("%s.new", filename);
 243         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 244                 perror("fopen4");
 245                 fclose(fp);
 246                 g_free(pathnew);
 247                 goto bail;
 248         }
 249
 250         while ((len = fread(buf, sizeof(gchar), sizeof(buf)-1, fp)) > 0) {
 251                 buf[len]='\0';
 252                 if (start) {
 253                         start = FALSE;
 254                         fprintf(fpnew, "SC-Marked-For-Download: %d\n",
 255                                         download);
 256
 257                         if(strlen(buf) > strlen("SC-Marked-For-Download: x\n")
 258                         && !strncmp(buf, "SC-Marked-For-Download:",
 259                                     strlen("SC-Marked-For-Download:"))) {
 260                                 fprintf(fpnew, "%s",
 261                                  buf+strlen("SC-Marked-For-Download: x\n"));
 262                                 continue;
 263                         }
 264                 }
 265                 fprintf(fpnew, "%s", buf);
 266         }
 267         fclose(fpnew);
 268         fclose(fp);
 269         g_unlink(filename);
 270         rename(pathnew, filename);
 271         g_free(pathnew);
 272         msginfo->planned_download = download;
 273         msgcache_update_msg(msginfo->folder->cache, msginfo);
 274
 275         err = 0;
 276 bail:
 277         g_free(filename);
 278         procmsg_msginfo_free(tinfo);
 279
 280         return err;
 281 }
 282
 283 int partial_mark_for_delete(MsgInfo *msginfo)
 284 {
 285         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DELE);
 286 }
 287
 288 int partial_mark_for_download(MsgInfo *msginfo)
 289 {
 290         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DLOAD);
 291 }
 292
 293 int partial_unmark(MsgInfo *msginfo)
 294 {
 295         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_UNKN);
 296 }
 297
 298 void partial_delete_old(const gchar *file)
 299 {
 300         gchar *id = g_strdup(file);
 301         gchar *snum = strrchr(file, ':');
 302         int num = 0;
 303         FolderItem *item = NULL;
 304
 305         debug_print("too big message updated,should remove %s\n", file);
 306
 307         if (snum) {
 308                 snum++;
 309         } else {
 310                 g_free(id);
 311                 return; /* not a real problem */
 312         }
 313
 314         num = atoi(snum);
 315
 316         if (strrchr(id, ':'))
 317                 *(strrchr(id, ':'))='\0';
 318
 319         item = folder_find_item_from_identifier(id);
 320         if (item) {
 321                 debug_print("removing %d in %s\n", num, id);
 322                 folder_item_remove_msg(item, num);
 323         }
 324         g_free(id);
 325 }
 326
 327 gchar *partial_get_filename(const gchar *server, const gchar *login,
 328                                    const gchar *muidl)
 329 {
 330         gchar *path;
 331         gchar *result = NULL;
 332         FILE *fp;
 333         gchar buf[POPBUFSIZE];
 334         gchar uidl[POPBUFSIZE];
 335         time_t recv_time;
 336         time_t now;
 337         gint partial_recv;
 338         gchar *sanitized_uid = g_strdup(login);
 339
 340         subst_for_filename(sanitized_uid);
 341
 342         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 343                            "uidl", G_DIR_SEPARATOR_S,
 344                            server, "-", sanitized_uid, NULL);
 345         if ((fp = g_fopen(path, "rb")) == NULL) {
 346                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 347                 g_free(path);
 348                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 349                                    "uidl-", server,
 350                                    "-", sanitized_uid, NULL);
 351                 if ((fp = g_fopen(path, "rb")) == NULL) {
 352                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 353                         g_free(sanitized_uid);
 354                         g_free(path);
 355                         return result;
 356                 }
 357         }
 358         g_free(sanitized_uid);
 359         g_free(path);
 360
 361         now = time(NULL);
 362
 363         while (fgets(buf, sizeof(buf), fp) != NULL) {
 364                 gchar tmp[POPBUFSIZE];
 365                 strretchomp(buf);
 366                 recv_time = RECV_TIME_NONE;
 367                 partial_recv = POP3_TOTALLY_RECEIVED;
 368
 369                 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
 370                            tmp) < 2) {
 371                         if (sscanf(buf, "%s", uidl) != 1)
 372                                 continue;
 373                         else {
 374                                 recv_time = now;
 375                         }
 376                 }
 377                 if (!strcmp(muidl, uidl)) {
 378                         result = g_strdup(tmp);
 379                         break;
 380                 }
 381         }
 382
 383         fclose(fp);
 384
 385         return result;
 386 }
 387