src/common/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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <stdio.h>
  51 #include <string.h>
  52 #include <stdarg.h>
  53 #include <ctype.h>
  54 #include <unistd.h>
  55 #include <time.h>
  56 #include <errno.h>
  57
  58 #include "intl.h"
  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
  76         if (!msginfo->account_server
  77         ||  !msginfo->account_login
  78         ||  !msginfo->partial_recv)
  79                 return FALSE;
  80
  81         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  82                            "uidl", G_DIR_SEPARATOR_S, msginfo->account_server,
  83                            "-", msginfo->account_login, NULL);
  84         if ((fp = fopen(path, "rb")) == NULL) {
  85                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
  86                 g_free(path);
  87                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  88                                    "uidl-", msginfo->account_server,
  89                                    "-", msginfo->account_login, NULL);
  90                 if ((fp = fopen(path, "rb")) == NULL) {
  91                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
  92                         g_free(path);
  93                         return FALSE;
  94                 }
  95         }
  96         g_free(path);
  97
  98         now = time(NULL);
  99
 100         while (fgets(buf, sizeof(buf), fp) != NULL) {
 101                 gchar tmp[POPBUFSIZE];
 102                 strretchomp(buf);
 103                 recv_time = RECV_TIME_NONE;
 104                 partial_recv = POP3_TOTALLY_RECEIVED;
 105
 106                 if (sscanf(buf, "%s\t%ld\t%s", uidl, &recv_time, tmp) < 2) {
 107                         if (sscanf(buf, "%s", uidl) != 1)
 108                                 continue;
 109                         else {
 110                                 recv_time = now;
 111                         }
 112                 }
 113                 if (!strcmp(uidl, msginfo->partial_recv)) {
 114                         fclose(fp);
 115                         return TRUE;
 116                 }
 117         }
 118
 119         fclose(fp);
 120         return FALSE;
 121 }
 122
 123 static int partial_uidl_mark_mail(MsgInfo *msginfo, int download)
 124 {
 125         gchar *path;
 126         gchar *pathnew;
 127         FILE *fp;
 128         FILE *fpnew;
 129         gchar buf[POPBUFSIZE];
 130         gchar uidl[POPBUFSIZE];
 131         time_t recv_time;
 132         time_t now;
 133         int len;
 134         int start = TRUE;
 135         gchar partial_recv[POPBUFSIZE];
 136         int err = -1;
 137
 138         gchar *filename;
 139         MsgInfo *tinfo;
 140         filename = procmsg_get_message_file_path(msginfo);
 141         if (!filename) {
 142                 g_warning("can't get message file path.\n");
 143                 return err;
 144         }
 145         tinfo = procheader_parse_file(filename, msginfo->flags, TRUE, TRUE);
 146
 147         if (!tinfo->account_server
 148         ||  !tinfo->account_login
 149         ||  !tinfo->partial_recv) {
 150                 goto bail;
 151         }
 152         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 153                            "uidl", G_DIR_SEPARATOR_S, tinfo->account_server,
 154                            "-", tinfo->account_login, NULL);
 155         if ((fp = fopen(path, "rb")) == NULL) {
 156                 perror("fopen1");
 157                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 158                 g_free(path);
 159                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 160                                    "uidl-", tinfo->account_server,
 161                                    "-", tinfo->account_login, NULL);
 162                 if ((fp = fopen(path, "rb")) == NULL) {
 163                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 164                         g_free(path);
 165                 }
 166                 goto bail;
 167         }
 168
 169         pathnew = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 170                            "uidl", G_DIR_SEPARATOR_S, tinfo->account_server,
 171                            "-", tinfo->account_login, ".new", NULL);
 172         if ((fpnew = fopen(pathnew, "wb")) == NULL) {
 173                 perror("fopen2");
 174                 fclose(fp);
 175                 g_free(pathnew);
 176                 goto bail;
 177         }
 178
 179         now = time(NULL);
 180
 181         while (fgets(buf, sizeof(buf), fp) != NULL) {
 182                 strretchomp(buf);
 183                 recv_time = RECV_TIME_NONE;
 184                 sprintf(partial_recv,"0");
 185
 186                 if (sscanf(buf, "%s\t%ld\t%s",
 187                            uidl, &recv_time, partial_recv) < 2) {
 188                         if (sscanf(buf, "%s", uidl) != 1)
 189                                 continue;
 190                         else {
 191                                 recv_time = now;
 192                         }
 193                 }
 194                 if (strcmp(tinfo->partial_recv, uidl)) {
 195                         fprintf(fpnew, "%s\t%ld\t%s\n",
 196                                 uidl, recv_time, partial_recv);
 197                 } else {
 198                         gchar *stat = NULL;
 199                         if (download == POP3_PARTIAL_DLOAD_DLOAD) {
 200                                 gchar *folder_id = folder_item_get_identifier(
 201                                                         msginfo->folder);
 202                                 stat = g_strdup_printf("%s:%d",
 203                                         folder_id, msginfo->msgnum);
 204                                 g_free(folder_id);
 205                         }
 206                         else if (download == POP3_PARTIAL_DLOAD_UNKN)
 207                                 stat = g_strdup("1");
 208                         else if (download == POP3_PARTIAL_DLOAD_DELE)
 209                                 stat = g_strdup("0");
 210
 211                         fprintf(fpnew, "%s\t%ld\t%s\n",
 212                                 uidl, recv_time, stat);
 213                         g_free(stat);
 214                 }
 215         }
 216         fclose(fpnew);
 217         fclose(fp);
 218
 219         move_file(pathnew, path, TRUE);
 220
 221         g_free(path);
 222         g_free(pathnew);
 223
 224         if ((fp = fopen(filename,"rb")) == NULL) {
 225                 perror("fopen3");
 226                 goto bail;
 227         }
 228         pathnew = g_strdup_printf("%s.new", filename);
 229         if ((fpnew = fopen(pathnew, "wb")) == NULL) {
 230                 perror("fopen4");
 231                 fclose(fp);
 232                 g_free(pathnew);
 233                 goto bail;
 234         }
 235
 236         while ((len = fread(buf, sizeof(gchar), sizeof(buf), fp)) > 0) {
 237                 buf[len]='\0';
 238                 if (start) {
 239                         start = FALSE;
 240                         fprintf(fpnew, "SC-Marked-For-Download: %d\n",
 241                                         download);
 242
 243                         if(strlen(buf) > strlen("SC-Marked-For-Download: x\n")
 244                         && !strncmp(buf, "SC-Marked-For-Download:",
 245                                     strlen("SC-Marked-For-Download:"))) {
 246                                 fprintf(fpnew, "%s",
 247                                  buf+strlen("SC-Marked-For-Download: x\n"));
 248                                 continue;
 249                         }
 250                 }
 251                 fprintf(fpnew, "%s", buf);
 252         }
 253         fclose(fpnew);
 254         fclose(fp);
 255         unlink(filename);
 256         rename(pathnew, filename);
 257         g_free(pathnew);
 258         msginfo->planned_download = download;
 259         msgcache_update_msg(msginfo->folder->cache, msginfo);
 260
 261         err = 0;
 262 bail:
 263         g_free(filename);
 264         procmsg_msginfo_free(tinfo);
 265
 266         return err;
 267 }
 268
 269 int partial_mark_for_delete(MsgInfo *msginfo)
 270 {
 271         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DELE);
 272 }
 273
 274 int partial_mark_for_download(MsgInfo *msginfo)
 275 {
 276         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DLOAD);
 277 }
 278
 279 int partial_unmark(MsgInfo *msginfo)
 280 {
 281         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_UNKN);
 282 }
 283
 284 void partial_delete_old(const gchar *file)
 285 {
 286         gchar *id = g_strdup(file);
 287         gchar *snum = strrchr(file, ':');
 288         int num = 0;
 289         FolderItem *item = NULL;
 290
 291         debug_print("too big message updated,should remove %s\n", file);
 292
 293         if (snum) {
 294                 snum++;
 295         } else {
 296                 g_free(id);
 297                 return; /* not a real problem */
 298         }
 299
 300         num = atoi(snum);
 301
 302         if (strrchr(id, ':'))
 303                 *(strrchr(id, ':'))='\0';
 304
 305         item = folder_find_item_from_identifier(id);
 306         if (item) {
 307                 debug_print("removing %d in %s\n", num, id);
 308                 folder_item_remove_msg(item, num);
 309         }
 310         g_free(id);
 311 }
 312
 313 gchar *partial_get_filename(const gchar *server, const gchar *login,
 314                                    const gchar *muidl)
 315 {
 316         gchar *path;
 317         gchar *result = NULL;
 318         FILE *fp;
 319         gchar buf[POPBUFSIZE];
 320         gchar uidl[POPBUFSIZE];
 321         time_t recv_time;
 322         time_t now;
 323         gint partial_recv;
 324
 325         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 326                            "uidl", G_DIR_SEPARATOR_S,
 327                            server, "-", login, NULL);
 328         if ((fp = fopen(path, "rb")) == NULL) {
 329                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 330                 g_free(path);
 331                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 332                                    "uidl-", server,
 333                                    "-", login, NULL);
 334                 if ((fp = fopen(path, "rb")) == NULL) {
 335                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 336                         g_free(path);
 337                         return result;
 338                 }
 339         }
 340         g_free(path);
 341
 342         now = time(NULL);
 343
 344         while (fgets(buf, sizeof(buf), fp) != NULL) {
 345                 gchar tmp[POPBUFSIZE];
 346                 strretchomp(buf);
 347                 recv_time = RECV_TIME_NONE;
 348                 partial_recv = POP3_TOTALLY_RECEIVED;
 349
 350                 if (sscanf(buf, "%s\t%ld\t%s", uidl, &recv_time, tmp) < 2) {
 351                         if (sscanf(buf, "%s", uidl) != 1)
 352                                 continue;
 353                         else {
 354                                 recv_time = now;
 355                         }
 356                 }
 357                 if (!strcmp(muidl, uidl)) {
 358                         result = g_strdup(tmp);
 359                         break;
 360                 }
 361         }
 362
 363         fclose(fp);
 364
 365         return result;
 366 }
 367