1 /*
2 * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2018 Colin Leroy <colin@colino.net>
4 * and the Claws Mail team
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 3 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, see <http://www.gnu.org/licenses/>.
18 *
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 Claws Mail 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 Claws Mail 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 #include "claws-features.h"
48 #endif
49
50 #include <glib.h>
51 #include <glib/gi18n.h>
52 #include <stdio.h>
53 #include <string.h>
54 #include <stdarg.h>
55 #include <ctype.h>
56 #include <unistd.h>
57 #include <time.h>
58 #include <errno.h>
59
60 #include "partial_download.h"
61 #include "utils.h"
62 #include "pop.h"
63 #include "folder.h"
64 #include "procheader.h"
65 #include "msgcache.h"
66 #include "file-utils.h"
67
partial_msg_in_uidl_list(MsgInfo * msginfo)68 int partial_msg_in_uidl_list(MsgInfo *msginfo)
69 {
70 gchar *path;
71 FILE *fp;
72 gchar buf[POPBUFSIZE];
73 gchar uidl[POPBUFSIZE];
74 time_t recv_time;
75 time_t now;
76 gchar *sanitized_uid = NULL;
77
78 if (!msginfo->extradata)
79 return FALSE;
80
81 sanitized_uid = g_strdup(msginfo->extradata->account_login);
82
83 subst_for_filename(sanitized_uid);
84
85 if (!msginfo->extradata->account_server
86 || !msginfo->extradata->account_login
87 || !msginfo->extradata->partial_recv)
88 return FALSE;
89
90 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
91 "uidl", G_DIR_SEPARATOR_S, msginfo->extradata->account_server,
92 "-", msginfo->extradata->account_login, NULL);
93 if ((fp = claws_fopen(path, "rb")) == NULL) {
94 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
95 g_free(path);
96 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
97 "uidl-", msginfo->extradata->account_server,
98 "-", sanitized_uid, NULL);
99 if ((fp = claws_fopen(path, "rb")) == NULL) {
100 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
101 g_free(sanitized_uid);
102 g_free(path);
103 return FALSE;
104 }
105 }
106 g_free(sanitized_uid);
107 g_free(path);
108
109 now = time(NULL);
110
111 while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
112 gchar tmp[POPBUFSIZE];
113 strretchomp(buf);
114 recv_time = RECV_TIME_NONE;
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 claws_fclose(fp);
126 return TRUE;
127 }
128 }
129
130 claws_fclose(fp);
131 return FALSE;
132 }
133
partial_uidl_mark_mail(MsgInfo * msginfo,int download)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 gchar partial_recv[POPBUFSIZE];
145 int err = -1;
146 gchar *filename;
147 MsgInfo *tinfo;
148 gchar *sanitized_uid = NULL;
149
150 filename = procmsg_get_message_file_path(msginfo);
151 if (!filename) {
152 g_warning("can't get message file path.");
153 return err;
154 }
155 tinfo = procheader_parse_file(filename, msginfo->flags, TRUE, TRUE);
156
157 if (!tinfo->extradata) {
158 g_free(filename);
159 return err;
160 }
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 = claws_fopen(path, "rb")) == NULL) {
175 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
176 g_free(path);
177 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
178 "uidl-", tinfo->extradata->account_server,
179 "-", tinfo->extradata->account_login, NULL);
180 if ((fp = claws_fopen(path, "rb")) == NULL) {
181 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
182 g_free(path);
183 goto bail;
184 }
185 }
186
187 pathnew = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
188 "uidl", G_DIR_SEPARATOR_S, tinfo->extradata->account_server,
189 "-", sanitized_uid, ".new", NULL);
190
191 g_free(sanitized_uid);
192
193 if ((fpnew = claws_fopen(pathnew, "wb")) == NULL) {
194 FILE_OP_ERROR(pathnew, "claws_fopen");
195 claws_fclose(fp);
196 g_free(pathnew);
197 goto bail;
198 }
199
200 now = time(NULL);
201
202 while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
203 strretchomp(buf);
204 recv_time = RECV_TIME_NONE;
205 sprintf(partial_recv,"0");
206
207 if (sscanf(buf, "%s\t%ld\t%s",
208 uidl, (long int *) &recv_time, partial_recv) < 2) {
209 if (sscanf(buf, "%s", uidl) != 1)
210 continue;
211 else {
212 recv_time = now;
213 }
214 }
215 if (strcmp(tinfo->extradata->partial_recv, uidl)) {
216 if (fprintf(fpnew, "%s\t%ld\t%s\n",
217 uidl, (long int) recv_time, partial_recv) < 0) {
218 FILE_OP_ERROR(pathnew, "fprintf");
219 claws_fclose(fpnew);
220 claws_fclose(fp);
221 g_free(path);
222 g_free(pathnew);
223 goto bail;
224 }
225 } else {
226 gchar *stat = NULL;
227 if (download == POP3_PARTIAL_DLOAD_DLOAD) {
228 gchar *folder_id = folder_item_get_identifier(
229 msginfo->folder);
230 stat = g_strdup_printf("%s:%d",
231 folder_id, msginfo->msgnum);
232 g_free(folder_id);
233 }
234 else if (download == POP3_PARTIAL_DLOAD_UNKN)
235 stat = g_strdup("1");
236 else if (download == POP3_PARTIAL_DLOAD_DELE)
237 stat = g_strdup("0");
238
239 if (fprintf(fpnew, "%s\t%ld\t%s\n",
240 uidl, (long int) recv_time, stat) < 0) {
241 FILE_OP_ERROR(pathnew, "fprintf");
242 claws_fclose(fpnew);
243 claws_fclose(fp);
244 g_free(path);
245 g_free(pathnew);
246 goto bail;
247 }
248 g_free(stat);
249 }
250 }
251 if (claws_safe_fclose(fpnew) == EOF) {
252 FILE_OP_ERROR(pathnew, "claws_fclose");
253 claws_fclose(fp);
254 g_free(path);
255 g_free(pathnew);
256 goto bail;
257 }
258 claws_fclose(fp);
259
260 move_file(pathnew, path, TRUE);
261
262 g_free(path);
263 g_free(pathnew);
264
265 if ((fp = claws_fopen(filename,"rb")) == NULL) {
266 FILE_OP_ERROR(filename, "claws_fopen");
267 goto bail;
268 }
269 pathnew = g_strdup_printf("%s.new", filename);
270 if ((fpnew = claws_fopen(pathnew, "wb")) == NULL) {
271 FILE_OP_ERROR(pathnew, "claws_fopen");
272 claws_fclose(fp);
273 g_free(pathnew);
274 goto bail;
275 }
276
277 if (fprintf(fpnew, "SC-Marked-For-Download: %d\n",
278 download) < 0) {
279 FILE_OP_ERROR(pathnew, "fprintf");
280 claws_fclose(fpnew);
281 claws_fclose(fp);
282 g_free(pathnew);
283 goto bail;
284 }
285 while (claws_fgets(buf, sizeof(buf)-1, fp) != NULL) {
286 if(strlen(buf) > strlen("SC-Marked-For-Download: x\n")
287 && !strncmp(buf, "SC-Marked-For-Download:",
288 strlen("SC-Marked-For-Download:"))) {
289 if (fprintf(fpnew, "%s",
290 buf+strlen("SC-Marked-For-Download: x\n")) < 0) {
291 FILE_OP_ERROR(pathnew, "fprintf");
292 claws_fclose(fpnew);
293 claws_fclose(fp);
294 g_free(pathnew);
295 goto bail;
296 }
297 continue;
298 } else if (strlen(buf) == strlen("SC-Marked-For-Download: x\n")
299 && !strncmp(buf, "SC-Marked-For-Download:",
300 strlen("SC-Marked-For-Download:"))) {
301 continue;
302 }
303 if (fprintf(fpnew, "%s", buf) < 0) {
304 FILE_OP_ERROR(pathnew, "fprintf");
305 claws_fclose(fpnew);
306 claws_fclose(fp);
307 g_free(pathnew);
308 goto bail;
309 }
310 }
311 if (claws_safe_fclose(fpnew) == EOF) {
312 FILE_OP_ERROR(pathnew, "claws_fclose");
313 claws_fclose(fp);
314 g_free(pathnew);
315 goto bail;
316 }
317
318 claws_fclose(fp);
319 if (rename_force(pathnew, filename) != 0) {
320 g_free(pathnew);
321 goto bail;
322 }
323
324 g_free(pathnew);
325 msginfo->planned_download = download;
326 msgcache_update_msg(msginfo->folder->cache, msginfo);
327
328 err = 0;
329 bail:
330 g_free(filename);
331 procmsg_msginfo_free(&tinfo);
332
333 return err;
334 }
335
partial_mark_for_delete(MsgInfo * msginfo)336 int partial_mark_for_delete(MsgInfo *msginfo)
337 {
338 return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DELE);
339 }
340
partial_mark_for_download(MsgInfo * msginfo)341 int partial_mark_for_download(MsgInfo *msginfo)
342 {
343 return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_DLOAD);
344 }
345
partial_unmark(MsgInfo * msginfo)346 int partial_unmark(MsgInfo *msginfo)
347 {
348 return partial_uidl_mark_mail(msginfo, POP3_PARTIAL_DLOAD_UNKN);
349 }
350
partial_delete_old(const gchar * file)351 void partial_delete_old(const gchar *file)
352 {
353 gchar *id = g_strdup(file);
354 gchar *snum = strrchr(file, ':');
355 int num = 0;
356 FolderItem *item = NULL;
357
358 debug_print("too big message updated, should remove %s\n", file?file:"(null)");
359
360 if (snum) {
361 snum++;
362 } else {
363 g_free(id);
364 return; /* not a real problem */
365 }
366
367 num = atoi(snum);
368
369 if (strrchr(id, ':'))
370 *(strrchr(id, ':'))='\0';
371
372 item = folder_find_item_from_identifier(id);
373 if (item) {
374 debug_print("removing %d in %s\n", num, id);
375 folder_item_remove_msg(item, num);
376 }
377 g_free(id);
378 }
379
partial_get_filename(const gchar * server,const gchar * login,const gchar * muidl)380 gchar *partial_get_filename(const gchar *server, const gchar *login,
381 const gchar *muidl)
382 {
383 gchar *path;
384 gchar *result = NULL;
385 FILE *fp;
386 gchar buf[POPBUFSIZE];
387 gchar uidl[POPBUFSIZE];
388 time_t recv_time;
389 time_t now;
390 gchar *sanitized_uid = g_strdup(login);
391
392 subst_for_filename(sanitized_uid);
393
394 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
395 "uidl", G_DIR_SEPARATOR_S,
396 server, "-", sanitized_uid, NULL);
397 if ((fp = claws_fopen(path, "rb")) == NULL) {
398 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
399 g_free(path);
400 path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
401 "uidl-", server,
402 "-", sanitized_uid, NULL);
403 if ((fp = claws_fopen(path, "rb")) == NULL) {
404 if (ENOENT != errno) FILE_OP_ERROR(path, "claws_fopen");
405 g_free(sanitized_uid);
406 g_free(path);
407 return result;
408 }
409 }
410 g_free(sanitized_uid);
411 g_free(path);
412
413 now = time(NULL);
414
415 while (claws_fgets(buf, sizeof(buf), fp) != NULL) {
416 gchar tmp[POPBUFSIZE];
417 strretchomp(buf);
418 recv_time = RECV_TIME_NONE;
419
420 if (sscanf(buf, "%s\t%ld\t%s", uidl, (long int *) &recv_time,
421 tmp) < 2) {
422 if (sscanf(buf, "%s", uidl) != 1)
423 continue;
424 else {
425 recv_time = now;
426 }
427 }
428 if (!strcmp(muidl, uidl)) {
429 result = g_strdup(tmp);
430 break;
431 }
432 }
433
434 claws_fclose(fp);
435
436 return result;
437 }
438
439