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