Diffstat (limited to 'kmicromail/libetpan/generic/pop3driver_cached_message.c') (more/less context) (ignore whitespace changes)
-rw-r--r-- | kmicromail/libetpan/generic/pop3driver_cached_message.c | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/kmicromail/libetpan/generic/pop3driver_cached_message.c b/kmicromail/libetpan/generic/pop3driver_cached_message.c new file mode 100644 index 0000000..7aeb22c --- a/dev/null +++ b/kmicromail/libetpan/generic/pop3driver_cached_message.c | |||
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1 | /* | ||
2 | * libEtPan! -- a mail stuff library | ||
3 | * | ||
4 | * Copyright (C) 2001, 2002 - DINH Viet Hoa | ||
5 | * All rights reserved. | ||
6 | * | ||
7 | * Redistribution and use in source and binary forms, with or without | ||
8 | * modification, are permitted provided that the following conditions | ||
9 | * are met: | ||
10 | * 1. Redistributions of source code must retain the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer. | ||
12 | * 2. Redistributions in binary form must reproduce the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer in the | ||
14 | * documentation and/or other materials provided with the distribution. | ||
15 | * 3. Neither the name of the libEtPan! project nor the names of its | ||
16 | * contributors may be used to endorse or promote products derived | ||
17 | * from this software without specific prior written permission. | ||
18 | * | ||
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
29 | * SUCH DAMAGE. | ||
30 | */ | ||
31 | |||
32 | /* | ||
33 | * $Id$ | ||
34 | */ | ||
35 | |||
36 | #include "pop3driver_cached_message.h" | ||
37 | |||
38 | #include <string.h> | ||
39 | #include <stdlib.h> | ||
40 | |||
41 | #include "mail_cache_db.h" | ||
42 | |||
43 | #include "mailmessage.h" | ||
44 | #include "mailmessage_tools.h" | ||
45 | #include "pop3driver.h" | ||
46 | #include "pop3driver_tools.h" | ||
47 | #include "pop3driver_cached.h" | ||
48 | #include "pop3driver_message.h" | ||
49 | #include "generic_cache.h" | ||
50 | |||
51 | static int pop3_prefetch(mailmessage * msg_info); | ||
52 | |||
53 | static void pop3_prefetch_free(struct generic_message_t * msg); | ||
54 | |||
55 | static int pop3_initialize(mailmessage * msg_info); | ||
56 | |||
57 | static void pop3_flush(mailmessage * msg_info); | ||
58 | |||
59 | static void pop3_check(mailmessage * msg_info); | ||
60 | |||
61 | static int pop3_fetch_header(mailmessage * msg_info, | ||
62 | char ** result, | ||
63 | size_t * result_len); | ||
64 | |||
65 | static int pop3_fetch_size(mailmessage * msg_info, | ||
66 | size_t * result); | ||
67 | |||
68 | static int pop3_get_flags(mailmessage * msg_info, | ||
69 | struct mail_flags ** result); | ||
70 | |||
71 | static void pop3_uninitialize(mailmessage * msg_info); | ||
72 | |||
73 | static mailmessage_driver local_pop3_cached_message_driver = { | ||
74 | .msg_name = "pop3-cached", | ||
75 | |||
76 | .msg_initialize = pop3_initialize, | ||
77 | .msg_uninitialize = pop3_uninitialize, | ||
78 | |||
79 | .msg_flush = pop3_flush, | ||
80 | .msg_check = pop3_check, | ||
81 | |||
82 | .msg_fetch_result_free = mailmessage_generic_fetch_result_free, | ||
83 | |||
84 | .msg_fetch = mailmessage_generic_fetch, | ||
85 | .msg_fetch_header = pop3_fetch_header, | ||
86 | .msg_fetch_body = mailmessage_generic_fetch_body, | ||
87 | .msg_fetch_size = pop3_fetch_size, | ||
88 | .msg_get_bodystructure = mailmessage_generic_get_bodystructure, | ||
89 | .msg_fetch_section = mailmessage_generic_fetch_section, | ||
90 | .msg_fetch_section_header = mailmessage_generic_fetch_section_header, | ||
91 | .msg_fetch_section_mime = mailmessage_generic_fetch_section_mime, | ||
92 | .msg_fetch_section_body = mailmessage_generic_fetch_section_body, | ||
93 | .msg_fetch_envelope = mailmessage_generic_fetch_envelope, | ||
94 | |||
95 | .msg_get_flags = pop3_get_flags, | ||
96 | }; | ||
97 | |||
98 | mailmessage_driver * pop3_cached_message_driver = | ||
99 | &local_pop3_cached_message_driver; | ||
100 | |||
101 | |||
102 | static inline struct pop3_cached_session_state_data * | ||
103 | get_cached_session_data(mailmessage * msg) | ||
104 | { | ||
105 | return msg->msg_session->sess_data; | ||
106 | } | ||
107 | |||
108 | static inline mailsession * get_ancestor_session(mailmessage * msg) | ||
109 | { | ||
110 | return get_cached_session_data(msg)->pop3_ancestor; | ||
111 | } | ||
112 | |||
113 | static inline struct pop3_session_state_data * | ||
114 | get_ancestor_session_data(mailmessage * msg) | ||
115 | { | ||
116 | return get_ancestor_session(msg)->sess_data; | ||
117 | } | ||
118 | |||
119 | static inline mailpop3 * get_pop3_session(mailmessage * msg) | ||
120 | { | ||
121 | return get_ancestor_session_data(msg)->pop3_session; | ||
122 | } | ||
123 | |||
124 | |||
125 | static int pop3_prefetch(mailmessage * msg_info) | ||
126 | { | ||
127 | char * msg_content; | ||
128 | size_t msg_length; | ||
129 | struct generic_message_t * msg; | ||
130 | int r; | ||
131 | struct pop3_cached_session_state_data * cached_data; | ||
132 | char filename[PATH_MAX]; | ||
133 | |||
134 | /* we try the cached message */ | ||
135 | |||
136 | cached_data = get_cached_session_data(msg_info); | ||
137 | |||
138 | snprintf(filename, PATH_MAX, "%s/%s", | ||
139 | cached_data->pop3_cache_directory, msg_info->msg_uid); | ||
140 | |||
141 | r = generic_cache_read(filename, &msg_content, &msg_length); | ||
142 | if (r == MAIL_NO_ERROR) { | ||
143 | msg = msg_info->msg_data; | ||
144 | |||
145 | msg->msg_message = msg_content; | ||
146 | msg->msg_length = msg_length; | ||
147 | |||
148 | return MAIL_NO_ERROR; | ||
149 | } | ||
150 | |||
151 | /* we get the message through the network */ | ||
152 | |||
153 | r = pop3driver_retr(get_ancestor_session(msg_info), msg_info->msg_index, | ||
154 | &msg_content, &msg_length); | ||
155 | if (r != MAIL_NO_ERROR) | ||
156 | return r; | ||
157 | |||
158 | /* we write the message cache */ | ||
159 | |||
160 | generic_cache_store(filename, msg_content, msg_length); | ||
161 | |||
162 | msg = msg_info->msg_data; | ||
163 | |||
164 | msg->msg_message = msg_content; | ||
165 | msg->msg_length = msg_length; | ||
166 | |||
167 | return MAIL_NO_ERROR; | ||
168 | } | ||
169 | |||
170 | static void pop3_prefetch_free(struct generic_message_t * msg) | ||
171 | { | ||
172 | if (msg->msg_message != NULL) { | ||
173 | mmap_string_unref(msg->msg_message); | ||
174 | msg->msg_message = NULL; | ||
175 | } | ||
176 | } | ||
177 | |||
178 | static int pop3_initialize(mailmessage * msg_info) | ||
179 | { | ||
180 | struct generic_message_t * msg; | ||
181 | int r; | ||
182 | char * uid; | ||
183 | struct mailpop3_msg_info * info; | ||
184 | mailpop3 * pop3; | ||
185 | |||
186 | pop3 = get_pop3_session(msg_info); | ||
187 | |||
188 | r = mailpop3_get_msg_info(pop3, msg_info->msg_index, &info); | ||
189 | switch (r) { | ||
190 | case MAILPOP3_NO_ERROR: | ||
191 | break; | ||
192 | default: | ||
193 | return pop3driver_pop3_error_to_mail_error(r); | ||
194 | } | ||
195 | |||
196 | uid = strdup(info->msg_uidl); | ||
197 | if (uid == NULL) | ||
198 | return MAIL_ERROR_MEMORY; | ||
199 | |||
200 | r = mailmessage_generic_initialize(msg_info); | ||
201 | if (r != MAIL_NO_ERROR) { | ||
202 | free(uid); | ||
203 | return r; | ||
204 | } | ||
205 | |||
206 | msg = msg_info->msg_data; | ||
207 | msg->msg_prefetch = pop3_prefetch; | ||
208 | msg->msg_prefetch_free = pop3_prefetch_free; | ||
209 | msg_info->msg_uid = uid; | ||
210 | |||
211 | return MAIL_NO_ERROR; | ||
212 | } | ||
213 | |||
214 | static void pop3_uninitialize(mailmessage * msg_info) | ||
215 | { | ||
216 | mailmessage_generic_uninitialize(msg_info); | ||
217 | } | ||
218 | |||
219 | #define FLAGS_NAME "flags.db" | ||
220 | |||
221 | static void pop3_flush(mailmessage * msg_info) | ||
222 | { | ||
223 | mailmessage_generic_flush(msg_info); | ||
224 | } | ||
225 | |||
226 | static void pop3_check(mailmessage * msg_info) | ||
227 | { | ||
228 | int r; | ||
229 | |||
230 | if (msg_info->msg_flags != NULL) { | ||
231 | r = mail_flags_store_set(get_cached_session_data(msg_info)->pop3_flags_store, | ||
232 | msg_info); | ||
233 | } | ||
234 | } | ||
235 | |||
236 | |||
237 | static int pop3_fetch_header(mailmessage * msg_info, | ||
238 | char ** result, | ||
239 | size_t * result_len) | ||
240 | { | ||
241 | struct generic_message_t * msg; | ||
242 | char * headers; | ||
243 | size_t headers_length; | ||
244 | int r; | ||
245 | struct pop3_cached_session_state_data * cached_data; | ||
246 | char filename[PATH_MAX]; | ||
247 | |||
248 | msg = msg_info->msg_data; | ||
249 | |||
250 | if (msg->msg_message != NULL) | ||
251 | return mailmessage_generic_fetch_header(msg_info, | ||
252 | result, result_len); | ||
253 | |||
254 | /* we try the cached message */ | ||
255 | |||
256 | cached_data = get_cached_session_data(msg_info); | ||
257 | |||
258 | snprintf(filename, PATH_MAX, "%s/%s-header", | ||
259 | cached_data->pop3_cache_directory, msg_info->msg_uid); | ||
260 | |||
261 | r = generic_cache_read(filename, &headers, &headers_length); | ||
262 | if (r == MAIL_NO_ERROR) { | ||
263 | * result = headers; | ||
264 | * result_len = headers_length; | ||
265 | |||
266 | return MAIL_NO_ERROR; | ||
267 | } | ||
268 | |||
269 | /* we get the message trough the network */ | ||
270 | |||
271 | r = pop3driver_header(get_ancestor_session(msg_info), msg_info->msg_index, | ||
272 | &headers, &headers_length); | ||
273 | if (r != MAIL_NO_ERROR) | ||
274 | return r; | ||
275 | |||
276 | generic_cache_store(filename, headers, headers_length); | ||
277 | |||
278 | * result = headers; | ||
279 | * result_len = headers_length; | ||
280 | |||
281 | return MAIL_NO_ERROR; | ||
282 | } | ||
283 | |||
284 | static int pop3_fetch_size(mailmessage * msg_info, | ||
285 | size_t * result) | ||
286 | { | ||
287 | return pop3driver_size(get_ancestor_session(msg_info), | ||
288 | msg_info->msg_index, result); | ||
289 | } | ||
290 | |||
291 | static int pop3_get_flags(mailmessage * msg_info, | ||
292 | struct mail_flags ** result) | ||
293 | { | ||
294 | int r; | ||
295 | struct mail_flags * flags; | ||
296 | struct mail_cache_db * cache_db_flags; | ||
297 | char filename_flags[PATH_MAX]; | ||
298 | int res; | ||
299 | struct pop3_cached_session_state_data * cached_data; | ||
300 | MMAPString * mmapstr; | ||
301 | |||
302 | if (msg_info->msg_flags != NULL) { | ||
303 | * result = msg_info->msg_flags; | ||
304 | |||
305 | return MAIL_NO_ERROR; | ||
306 | } | ||
307 | |||
308 | cached_data = get_cached_session_data(msg_info); | ||
309 | |||
310 | flags = mail_flags_store_get(cached_data->pop3_flags_store, | ||
311 | msg_info->msg_index); | ||
312 | |||
313 | if (flags == NULL) { | ||
314 | snprintf(filename_flags, PATH_MAX, "%s/%s", | ||
315 | cached_data->pop3_flags_directory, FLAGS_NAME); | ||
316 | |||
317 | r = mail_cache_db_open_lock(filename_flags, &cache_db_flags); | ||
318 | if (r < 0) { | ||
319 | res = MAIL_ERROR_MEMORY; | ||
320 | goto err; | ||
321 | } | ||
322 | |||
323 | mmapstr = mmap_string_new(""); | ||
324 | if (mmapstr == NULL) { | ||
325 | res = MAIL_ERROR_MEMORY; | ||
326 | goto close_db_flags; | ||
327 | } | ||
328 | |||
329 | r = pop3driver_get_cached_flags(cache_db_flags, mmapstr, | ||
330 | msg_info->msg_session, msg_info->msg_index, &flags); | ||
331 | if (r != MAIL_NO_ERROR) { | ||
332 | flags = mail_flags_new_empty(); | ||
333 | if (flags == NULL) { | ||
334 | res = MAIL_ERROR_MEMORY; | ||
335 | goto free_mmapstr; | ||
336 | } | ||
337 | } | ||
338 | |||
339 | mmap_string_free(mmapstr); | ||
340 | mail_cache_db_close_unlock(filename_flags, cache_db_flags); | ||
341 | } | ||
342 | |||
343 | msg_info->msg_flags = flags; | ||
344 | |||
345 | * result = flags; | ||
346 | |||
347 | return MAIL_NO_ERROR; | ||
348 | |||
349 | free_mmapstr: | ||
350 | mmap_string_free(mmapstr); | ||
351 | close_db_flags: | ||
352 | mail_cache_db_close_unlock(filename_flags, cache_db_flags); | ||
353 | err: | ||
354 | return res; | ||
355 | } | ||