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 Claws Mail 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         filename = procmsg_get_message_file_path(msginfo);
 153         if (!filename) {
 154                 g_warning("can't get message file path.\n");
 155                 return err;
 156         }
 157         tinfo = procheader_parse_file(filename, msginfo->flags, TRUE, TRUE);
 158
 159         if (!tinfo->extradata) {
 160                 g_free(filename);
 161                 return err;
 162         }
 163
 164         sanitized_uid = g_strdup(tinfo->extradata->account_login);
 165         subst_for_filename(sanitized_uid);
 166
 167         if (!tinfo->extradata->account_server
 168         ||  !tinfo->extradata->account_login
 169         ||  !tinfo->extradata->partial_recv) {
 170                 goto bail;
 171         }
 172         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 173                            "uidl", G_DIR_SEPARATOR_S, tinfo->extradata->account_server,
 174                            "-", sanitized_uid, NULL);
 175
 176         if ((fp = g_fopen(path, "rb")) == NULL) {
 177                 perror("fopen1");
 178                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 179                 g_free(path);
 180                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 181                                    "uidl-", tinfo->extradata->account_server,
 182                                    "-", tinfo->extradata->account_login, NULL);
 183                 if ((fp = g_fopen(path, "rb")) == NULL) {
 184                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 185                         g_free(path);
 186                         goto bail;
 187                 }
 188         }
 189
 190         pathnew = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 191                            "uidl", G_DIR_SEPARATOR_S, tinfo->extradata->account_server,
 192                            "-", sanitized_uid, ".new", NULL);
 193
 194         g_free(sanitized_uid);
 195
 196         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 197                 perror("fopen2");
 198                 fclose(fp);
 199                 g_free(pathnew);
 200                 goto bail;
 201         }
 202
 203         now = time(NULL);
 204
 205         while (fgets(buf, sizeof(buf), fp) != NULL) {
 206                 strretchomp(buf);
 207                 recv_time = RECV_TIME_NONE;
 208                 sprintf(partial_recv,"0");
 209
 210                 if (sscanf(buf, "%s\t%ld\t%s",
 211                            uidl, (long int *) &recv_time, partial_recv) < 2) {
 212                         if (sscanf(buf, "%s", uidl) != 1)
 213                                 continue;
 214                         else {
 215                                 recv_time = now;
 216                         }
 217                 }
 218                 if (strcmp(tinfo->extradata->partial_recv, uidl)) {
 219                         fprintf(fpnew, "%s\t%ld\t%s\n",
 220                                 uidl, (long int) recv_time, partial_recv);
 221                 } else {
 222                         gchar *stat = NULL;
 223                         if (download == POP3_PARTIAL_DLOAD_DLOAD) {
 224                                 gchar *folder_id = folder_item_get_identifier(
 225                                                         msginfo->folder);
 226                                 stat = g_strdup_printf("%s:%d",
 227                                         folder_id, msginfo->msgnum);
 228                                 g_free(folder_id);
 229                         }
 230                         else if (download == POP3_PARTIAL_DLOAD_UNKN)
 231                                 stat = g_strdup("1");
 232                         else if (download == POP3_PARTIAL_DLOAD_DELE)
 233                                 stat = g_strdup("0");
 234
 235                         fprintf(fpnew, "%s\t%ld\t%s\n",
 236                                 uidl, (long int) recv_time, stat);
 237                         g_free(stat);
 238                 }
 239         }
 240         fclose(fpnew);
 241         fclose(fp);
 242
 243         move_file(pathnew, path, TRUE);
 244
 245         g_free(path);
 246         g_free(pathnew);
 247
 248         if ((fp = g_fopen(filename,"rb")) == NULL) {
 249                 perror("fopen3");
 250                 goto bail;
 251         }
 252         pathnew = g_strdup_printf("%s.new", filename);
 253         if ((fpnew = g_fopen(pathnew, "wb")) == NULL) {
 254                 perror("fopen4");
 255                 fclose(fp);
 256                 g_free(pathnew);
 257                 goto bail;
 258         }
 259
 260         fprintf(fpnew, "SC-Marked-For-Download: %d\n",
 261                         download);
 262         while (fgets(buf, sizeof(buf)-1, fp) != NULL) {
 263                 if(strlen(buf) > strlen("SC-Marked-For-Download: x\n")
 264                 && !strncmp(buf, "SC-Marked-For-Download:",
 265                             strlen("SC-Marked-For-Download:"))) {
 266                         fprintf(fpnew, "%s",
 267                          buf+strlen("SC-Marked-For-Download: x\n"));
 268                         continue;
 269                 } else if (strlen(buf) == strlen("SC-Marked-For-Download: x\n")
 270                 && !strncmp(buf, "SC-Marked-For-Download:",
 271                             strlen("SC-Marked-For-Download:"))) {
 272                         continue;
 273                 }
 274                 fprintf(fpnew, "%s", buf);
 275         }
 276         fclose(fpnew);
 277         fclose(fp);
 278         g_unlink(filename);
 279         rename(pathnew, filename);
 280         g_free(pathnew);
 281         msginfo->planned_download = download;
 282         msgcache_update_msg(msginfo->folder->cache, msginfo);
 283
 284         err = 0;
 285 bail:
 286         g_free(filename);
 287         procmsg_msginfo_free(tinfo);
 288
 289         return err;
 290 }
 291
 292 int partial_mark_for_delete(MsgInfo *msginfo)
 293 {
 294         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DELE);
 295 }
 296
 297 int partial_mark_for_download(MsgInfo *msginfo)
 298 {
 299         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DLOAD);
 300 }
 301
 302 int partial_unmark(MsgInfo *msginfo)
 303 {
 304         return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_UNKN);
 305 }
 306
 307 void partial_delete_old(const gchar *file)
 308 {
 309         gchar *id = g_strdup(file);
 310         gchar *snum = strrchr(file, ':');
 311         int num = 0;
 312         FolderItem *item = NULL;
 313
 314         debug_print("too big message updated,should remove %s\n", file);
 315
 316         if (snum) {
 317                 snum++;
 318         } else {
 319                 g_free(id);
 320                 return; /* not a real problem */
 321         }
 322
 323         num = atoi(snum);
 324
 325         if (strrchr(id, ':'))
 326                 *(strrchr(id, ':'))='\0';
 327
 328         item = folder_find_item_from_identifier(id);
 329         if (item) {
 330                 debug_print("removing %d in %s\n", num, id);
 331                 folder_item_remove_msg(item, num);
 332         }
 333         g_free(id);
 334 }
 335
 336 gchar *partial_get_filename(const gchar *server, const gchar *login,
 337                                    const gchar *muidl)
 338 {
 339         gchar *path;
 340         gchar *result = NULL;
 341         FILE *fp;
 342         gchar buf[POPBUFSIZE];
 343         gchar uidl[POPBUFSIZE];
 344         time_t recv_time;
 345         time_t now;
 346         gint partial_recv;
 347         gchar *sanitized_uid = g_strdup(login);
 348
 349         subst_for_filename(sanitized_uid);
 350
 351         path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 352                            "uidl", G_DIR_SEPARATOR_S,
 353                            server, "-", sanitized_uid, NULL);
 354         if ((fp = g_fopen(path, "rb")) == NULL) {
 355                 if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 356                 g_free(path);
 357                 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 358                                    "uidl-", server,
 359                                    "-", sanitized_uid, NULL);
 360                 if ((fp = g_fopen(path, "rb")) == NULL) {
 361                         if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
 362                         g_free(sanitized_uid);
 363                         g_free(path);
 364                         return result;
 365                 }
 366         }
 367         g_free(sanitized_uid);
 368         g_free(path);
 369
 370         now = time(NULL);
 371
 372         while (fgets(buf, sizeof(buf), fp) != NULL) {
 373                 gchar tmp[POPBUFSIZE];
 374                 strretchomp(buf);
 375                 recv_time = RECV_TIME_NONE;
 376                 partial_recv = POP3_TOTALLY_RECEIVED;
 377
 378                 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
 379                            tmp) < 2) {
 380                         if (sscanf(buf, "%s", uidl) != 1)
 381                                 continue;
 382                         else {
 383                                 recv_time = now;
 384                         }
 385                 }
 386                 if (!strcmp(muidl, uidl)) {
 387                         result = g_strdup(tmp);
 388                         break;
 389                 }
 390         }
 391
 392         fclose(fp);
 393
 394         return result;
 395 }
 396