Diffstat (limited to 'kmicromail/libetpan/generic/maildirdriver_cached_message.c') (more/less context) (ignore whitespace changes)
-rw-r--r-- | kmicromail/libetpan/generic/maildirdriver_cached_message.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/kmicromail/libetpan/generic/maildirdriver_cached_message.c b/kmicromail/libetpan/generic/maildirdriver_cached_message.c new file mode 100644 index 0000000..51866aa --- a/dev/null +++ b/kmicromail/libetpan/generic/maildirdriver_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 "maildirdriver_message.h" | ||
37 | |||
38 | #include "mailmessage_tools.h" | ||
39 | #include "maildirdriver.h" | ||
40 | #include "maildir.h" | ||
41 | #include "generic_cache.h" | ||
42 | |||
43 | #include <unistd.h> | ||
44 | #include <sys/mman.h> | ||
45 | #include <sys/types.h> | ||
46 | #include <sys/stat.h> | ||
47 | #include <fcntl.h> | ||
48 | #include <string.h> | ||
49 | #include <stdlib.h> | ||
50 | |||
51 | static int prefetch(mailmessage * msg_info); | ||
52 | |||
53 | static void prefetch_free(struct generic_message_t * msg); | ||
54 | |||
55 | static int initialize(mailmessage * msg_info); | ||
56 | |||
57 | static void check(mailmessage * msg_info); | ||
58 | |||
59 | static mailmessage_driver local_maildir_cached_message_driver = { | ||
60 | .msg_name = "maildir-cached", | ||
61 | |||
62 | .msg_initialize = initialize, | ||
63 | .msg_uninitialize = mailmessage_generic_uninitialize, | ||
64 | |||
65 | .msg_flush = mailmessage_generic_flush, | ||
66 | .msg_check = check, | ||
67 | |||
68 | .msg_fetch_result_free = mailmessage_generic_fetch_result_free, | ||
69 | |||
70 | .msg_fetch = mailmessage_generic_fetch, | ||
71 | .msg_fetch_header = mailmessage_generic_fetch_header, | ||
72 | .msg_fetch_body = mailmessage_generic_fetch_header, | ||
73 | .msg_fetch_size = NULL, | ||
74 | .msg_get_bodystructure = mailmessage_generic_get_bodystructure, | ||
75 | .msg_fetch_section = mailmessage_generic_fetch_section, | ||
76 | .msg_fetch_section_header = mailmessage_generic_fetch_section_header, | ||
77 | .msg_fetch_section_mime = mailmessage_generic_fetch_section_mime, | ||
78 | .msg_fetch_section_body = mailmessage_generic_fetch_section_body, | ||
79 | .msg_fetch_envelope = mailmessage_generic_fetch_envelope, | ||
80 | |||
81 | .msg_get_flags = NULL, | ||
82 | }; | ||
83 | |||
84 | mailmessage_driver * maildir_cached_message_driver = | ||
85 | &local_maildir_cached_message_driver; | ||
86 | |||
87 | struct maildir_msg_data { | ||
88 | int fd; | ||
89 | }; | ||
90 | |||
91 | #if 0 | ||
92 | static inline struct maildir_cached_session_state_data * | ||
93 | get_cached_session_data(mailmessage * msg) | ||
94 | { | ||
95 | return msg->session->data; | ||
96 | } | ||
97 | |||
98 | static inline mailsession * cached_session_get_ancestor(mailsession * session) | ||
99 | { | ||
100 | return get_data(session)->session; | ||
101 | } | ||
102 | |||
103 | static inline struct maildir_session_state_data * | ||
104 | cached_session_get_ancestor_data(mailsession * session) | ||
105 | { | ||
106 | return get_ancestor(session)->data; | ||
107 | } | ||
108 | |||
109 | static struct maildir * get_maildir_session(mailmessage * msg) | ||
110 | { | ||
111 | return cached_session_get_ancestor_data(msg->session)->session; | ||
112 | } | ||
113 | #endif | ||
114 | static inline struct maildir_cached_session_state_data * | ||
115 | get_cached_session_data(mailmessage * msg) | ||
116 | { | ||
117 | return msg->msg_session->sess_data; | ||
118 | } | ||
119 | |||
120 | static inline struct maildir_cached_session_state_data * | ||
121 | cached_session_get_data(mailsession * s) | ||
122 | { | ||
123 | return s->sess_data; | ||
124 | } | ||
125 | |||
126 | static inline mailsession * cached_session_get_ancestor(mailsession * s) | ||
127 | { | ||
128 | return cached_session_get_data(s)->md_ancestor; | ||
129 | } | ||
130 | |||
131 | static inline struct maildir_session_state_data * | ||
132 | cached_session_get_ancestor_data(mailsession * s) | ||
133 | { | ||
134 | return cached_session_get_ancestor(s)->sess_data; | ||
135 | } | ||
136 | |||
137 | static inline struct maildir_session_state_data * | ||
138 | get_session_ancestor_data(mailmessage * msg) | ||
139 | { | ||
140 | return cached_session_get_ancestor_data(msg->msg_session); | ||
141 | } | ||
142 | |||
143 | static inline struct maildir * | ||
144 | cached_session_get_maildir_session(mailsession * session) | ||
145 | { | ||
146 | return cached_session_get_ancestor_data(session)->md_session; | ||
147 | } | ||
148 | |||
149 | static inline struct maildir * get_maildir_session(mailmessage * msg) | ||
150 | { | ||
151 | return cached_session_get_maildir_session(msg->msg_session); | ||
152 | } | ||
153 | |||
154 | static int prefetch(mailmessage * msg_info) | ||
155 | { | ||
156 | struct generic_message_t * msg; | ||
157 | int res; | ||
158 | struct maildir_msg_data * data; | ||
159 | char * filename; | ||
160 | int fd; | ||
161 | char * mapping; | ||
162 | struct maildir * md; | ||
163 | |||
164 | md = get_maildir_session(msg_info); | ||
165 | |||
166 | filename = maildir_message_get(md, msg_info->msg_uid); | ||
167 | if (filename == NULL) { | ||
168 | res = MAIL_ERROR_MEMORY; | ||
169 | goto err; | ||
170 | } | ||
171 | |||
172 | fd = open(filename, O_RDONLY); | ||
173 | free(filename); | ||
174 | if (fd == -1) { | ||
175 | res = MAIL_ERROR_FILE; | ||
176 | goto err; | ||
177 | } | ||
178 | |||
179 | mapping = mmap(NULL, msg_info->msg_size, PROT_READ, MAP_PRIVATE, fd, 0); | ||
180 | if (mapping == MAP_FAILED) { | ||
181 | res = MAIL_ERROR_FILE; | ||
182 | goto close; | ||
183 | } | ||
184 | |||
185 | data = malloc(sizeof(* data)); | ||
186 | if (data == NULL) { | ||
187 | res = MAIL_ERROR_MEMORY; | ||
188 | goto unmap; | ||
189 | } | ||
190 | |||
191 | data->fd = fd; | ||
192 | |||
193 | msg = msg_info->msg_data; | ||
194 | |||
195 | msg->msg_data = data; | ||
196 | msg->msg_message = mapping; | ||
197 | msg->msg_length = msg_info->msg_size; | ||
198 | |||
199 | return MAIL_NO_ERROR; | ||
200 | |||
201 | unmap: | ||
202 | munmap(mapping, msg_info->msg_size); | ||
203 | close: | ||
204 | close(fd); | ||
205 | err: | ||
206 | return res; | ||
207 | } | ||
208 | |||
209 | static void prefetch_free(struct generic_message_t * msg) | ||
210 | { | ||
211 | if (msg->msg_message != NULL) { | ||
212 | struct maildir_msg_data * data; | ||
213 | |||
214 | munmap(msg->msg_message, msg->msg_length); | ||
215 | msg->msg_message = NULL; | ||
216 | data = msg->msg_data; | ||
217 | close(data->fd); | ||
218 | free(data); | ||
219 | } | ||
220 | } | ||
221 | |||
222 | static int initialize(mailmessage * msg_info) | ||
223 | { | ||
224 | struct generic_message_t * msg; | ||
225 | int r; | ||
226 | |||
227 | r = mailmessage_generic_initialize(msg_info); | ||
228 | if (r != MAIL_NO_ERROR) | ||
229 | return r; | ||
230 | |||
231 | msg = msg_info->msg_data; | ||
232 | msg->msg_prefetch = prefetch; | ||
233 | msg->msg_prefetch_free = prefetch_free; | ||
234 | |||
235 | return MAIL_NO_ERROR; | ||
236 | } | ||
237 | |||
238 | static void check(mailmessage * msg_info) | ||
239 | { | ||
240 | int r; | ||
241 | |||
242 | if (msg_info->msg_flags != NULL) { | ||
243 | r = mail_flags_store_set(get_session_ancestor_data(msg_info)->md_flags_store, msg_info); | ||
244 | |||
245 | r = mail_flags_store_set(get_cached_session_data(msg_info)->md_flags_store, msg_info); | ||
246 | /* ignore errors */ | ||
247 | } | ||
248 | } | ||