src/partial_download.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws team
   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 = NULL;
  76
  77         if (!msginfo->extradata)
  78                 return FALSE;
  79
  80         sanitized_uid = g_strdup(msginfo->extradata->account_login);
  81
  82         subst_for_filename(sanitized_uid);
  83
  84         if (!msginfo->extradata->account_server
  85         ||  !msginfo->extradata->account_login
  86         ||  !msginfo->extradata->partial_recv)
  87                 return FALSE;
  88
  89         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  90                            "uidl", G_DIR_SEPARATOR_S, msginfo->extradata->account_server,
  91                            "-", msginfo->extradata->account_login, NULL);
  92         if ((fp = g_fopen(path, "rb")) == NULL) {
  93                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
  94                 g_free(path);
  95                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
  96                                    "uidl-", msginfo->extradata->account_server,
  97                                    "-", sanitized_uid, NULL);
  98                 if ((fp = g_fopen(path, "rb")) == NULL) {
  99                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 100                         g_free(sanitized_uid);
 101                         g_free(path);
 102                         return FALSE;
 103                 }
 104         }
 105         g_free(sanitized_uid);
 106         g_free(path);
 107
 108         now = time(NULL);
 109
 110         while (fgets(buf, sizeof(buf), fp) != NULL) {
 111                 gchar tmp[POPBUFSIZE];
 112                 strretchomp(buf);
 113                 recv_time = RECV_TIME_NONE;
 114                 partial_recv = POP3_TOTALLY_RECEIVED;
 115
 116                 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
 117                            tmp) < 2) {
 118                         if (sscanf(buf, "%s", uidl) != 1)
 119                                 continue;
 120                         else {
 121                                 recv_time = now;
 122                         }
 123                 }
 124                 if (!strcmp(uidl, msginfo->extradata->partial_recv)) {
 125                         fclose(fp);
 126                         return TRUE;
 127                 }
 128         }
 129
 130         fclose(fp);
 131         return FALSE;
 132 }
 133
 134 static int partial_uidl_mark_mail(MsgInfo *msginfo, int download)
 135 {
 136         gchar *path;
 137         gchar *pathnew;
 138         FILE *fp;
 139         FILE *fpnew;
 140         gchar buf[POPBUFSIZE];
 141         gchar uidl[POPBUFSIZE];
 142         time_t recv_time;
 143         time_t now;
 144         int len;
 145         int start = TRUE;
 146         gchar partial_recv[POPBUFSIZE];
 147         int err = -1;
 148         gchar *filename;
 149         MsgInfo *tinfo;
 150         gchar *sanitized_uid = NULL;
 151
 152         if (!tinfo->extradata)
 153                 return err;
 154
 155         filename = procmsg_get_message_file_path(msginfo);
 156         if (!filename) {
 157                 g_warning("can't get message file path.\n");
 158                 return err;
 159         }
 160         tinfo = procheader_parse_file(filename, msginfo->flags, TRUE, TRUE);
 161
 162         sanitized_uid = g_strdup(tinfo->extradata->account_login);
 163         subst_for_filename(sanitized_uid);
 164
 165         if (!tinfo->extradata->account_server
 166         ||  !tinfo->extradata->account_login
 167         ||  !tinfo->extradata->partial_recv) {
 168                 goto bail;
 169         }
 170         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 171                            "uidl", G_DIR_SEPARATOR_S, tinfo->extradata->account_server,
 172                            "-", sanitized_uid, NULL);
 173
 174         if ((fp = g_fopen(path, "rb")) == NULL) {
 175                 perror("fopen1");
 176                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 177                 g_free(path);
 178                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 179                                    "uidl-", tinfo->extradata->account_server,
 180                                    "-", tinfo->extradata->account_login, NULL);
 181                 if ((fp = g_fopen(path, "rb")) == NULL) {
 182                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 183                         g_free(path);
 184                         goto bail;
 185                 }
 186         }
 187
 188         pathnew = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 189                            "uidl", G_DIR_SEPARATOR_S, tinfo->extradata->account_server,
 190                            "-", sanitized_uid, ".new", NULL);
 191
 192         g_free(sanitized_uid);
 193
 194         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 195                 perror("fopen2");
 196                 fclose(fp);
 197                 g_free(pathnew);
 198                 goto bail;
 199         }
 200
 201         now = time(NULL);
 202
 203         while (fgets(buf, sizeof(buf), fp) != NULL) {
 204                 strretchomp(buf);
 205                 recv_time = RECV_TIME_NONE;
 206                 sprintf(partial_recv,"0");
 207
 208                 if (sscanf(buf, "%s\t%ld\t%s",
 209                            uidl, (long int *) &recv_time, partial_recv) < 2) {
 210                         if (sscanf(buf, "%s", uidl) != 1)
 211                                 continue;
 212                         else {
 213                                 recv_time = now;
 214                         }
 215                 }
 216                 if (strcmp(tinfo->extradata->partial_recv, uidl)) {
 217                         fprintf(fpnew, "%s\t%ld\t%s\n",
 218                                 uidl, (long int) recv_time, partial_recv);
 219                 } else {
 220                         gchar *stat = NULL;
 221                         if (download == POP3_PARTIAL_DLOAD_DLOAD) {
 222                                 gchar *folder_id = folder_item_get_identifier(
 223                                                         msginfo->folder);
 224                                 stat = g_strdup_printf("%s:%d",
 225                                         folder_id, msginfo->msgnum);
 226                                 g_free(folder_id);
 227                         }
 228                         else if (download == POP3_PARTIAL_DLOAD_UNKN)
 229                                 stat = g_strdup("1");
 230                         else if (download == POP3_PARTIAL_DLOAD_DELE)
 231                                 stat = g_strdup("0");
 232
 233                         fprintf(fpnew, "%s\t%ld\t%s\n",
 234                                 uidl, (long int) recv_time, stat);
 235                         g_free(stat);
 236                 }
 237         }
 238         fclose(fpnew);
 239         fclose(fp);
 240
 241         move_file(pathnew, path, TRUE);
 242
 243         g_free(path);
 244         g_free(pathnew);
 245
 246         if ((fp = g_fopen(filename,"rb")) == NULL) {
 247                 perror("fopen3");
 248                 goto bail;
 249         }
 250         pathnew = g_strdup_printf("%s.new", filename);
 251         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 252                 perror("fopen4");
 253                 fclose(fp);
 254                 g_free(pathnew);
 255                 goto bail;
 256         }
 257
 258         while ((len = fread(buf, sizeof(gchar), sizeof(buf)-1, fp)) > 0) {
 259                 buf[len]='\0';
 260                 if (start) {
 261                         start = FALSE;
 262                         fprintf(fpnew, "SC-Marked-For-Download: %d\n",
 263                                         download);
 264
 265                         if(strlen(buf) > strlen("SC-Marked-For-Download: x\n")
 266                         && !strncmp(buf, "SC-Marked-For-Download:",
 267                                     strlen("SC-Marked-For-Download:"))) {
 268                                 fprintf(fpnew, "%s",
 269                                  buf+strlen("SC-Marked-For-Download: x\n"));
 270                                 continue;
 271                         }
 272                 }
 273                 fprintf(fpnew, "%s", buf);
 274         }
 275         fclose(fpnew);
 276         fclose(fp);
 277         g_unlink(filename);
 278         rename(pathnew, filename);
 279         g_free(pathnew);
 280         msginfo->planned_download = download;
 281         msgcache_update_msg(msginfo->folder->cache, msginfo);
 282
 283         err = 0;
 284 bail:
 285         g_free(filename);
 286         procmsg_msginfo_free(tinfo);
 287
 288         return err;
 289 }
 290
 291 int partial_mark_for_delete(MsgInfo *msginfo)
 292 {
 293         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DELE);
 294 }
 295
 296 int partial_mark_for_download(MsgInfo *msginfo)
 297 {
 298         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DLOAD);
 299 }
 300
 301 int partial_unmark(MsgInfo *msginfo)
 302 {
 303         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_UNKN);
 304 }
 305
 306 void partial_delete_old(const gchar *file)
 307 {
 308         gchar *id = g_strdup(file);
 309         gchar *snum = strrchr(file, ':');
 310         int num = 0;
 311         FolderItem *item = NULL;
 312
 313         debug_print("too big message updated,should remove %s\n", file);
 314
 315         if (snum) {
 316                 snum++;
 317         } else {
 318                 g_free(id);
 319                 return; /* not a real problem */
 320         }
 321
 322         num = atoi(snum);
 323
 324         if (strrchr(id, ':'))
 325                 *(strrchr(id, ':'))='\0';
 326
 327         item = folder_find_item_from_identifier(id);
 328         if (item) {
 329                 debug_print("removing %d in %s\n", num, id);
 330                 folder_item_remove_msg(item, num);
 331         }
 332         g_free(id);
 333 }
 334
 335 gchar *partial_get_filename(const gchar *server, const gchar *login,
 336                                    const gchar *muidl)
 337 {
 338         gchar *path;
 339         gchar *result = NULL;
 340         FILE *fp;
 341         gchar buf[POPBUFSIZE];
 342         gchar uidl[POPBUFSIZE];
 343         time_t recv_time;
 344         time_t now;
 345         gint partial_recv;
 346         gchar *sanitized_uid = g_strdup(login);
 347
 348         subst_for_filename(sanitized_uid);
 349
 350         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 351                            "uidl", G_DIR_SEPARATOR_S,
 352                            server, "-", sanitized_uid, NULL);
 353         if ((fp = g_fopen(path, "rb")) == NULL) {
 354                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 355                 g_free(path);
 356                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 357                                    "uidl-", server,
 358                                    "-", sanitized_uid, NULL);
 359                 if ((fp = g_fopen(path, "rb")) == NULL) {
 360                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 361                         g_free(sanitized_uid);
 362                         g_free(path);
 363                         return result;
 364                 }
 365         }
 366         g_free(sanitized_uid);
 367         g_free(path);
 368
 369         now = time(NULL);
 370
 371         while (fgets(buf, sizeof(buf), fp) != NULL) {
 372                 gchar tmp[POPBUFSIZE];
 373                 strretchomp(buf);
 374                 recv_time = RECV_TIME_NONE;
 375                 partial_recv = POP3_TOTALLY_RECEIVED;
 376
 377                 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
 378                            tmp) < 2) {
 379                         if (sscanf(buf, "%s", uidl) != 1)
 380                                 continue;
 381                         else {
 382                                 recv_time = now;
 383                         }
 384                 }
 385                 if (!strcmp(muidl, uidl)) {
 386                         result = g_strdup(tmp);
 387                         break;
 388                 }
 389         }
 390
 391         fclose(fp);
 392
 393         return result;
 394 }
 395