Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/lib-imap/imap-message-cache.c @ 10:82b7de533f98 HEAD
s/user_data/context/ and some s/Data/Context/
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Thu, 22 Aug 2002 15:48:38 +0300 |
| parents | 1b34ec11fff8 |
| children | a946ce1f09b7 |
| rev | line source |
|---|---|
| 0 | 1 /* Copyright (C) 2002 Timo Sirainen */ |
| 2 | |
| 3 #include "lib.h" | |
|
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4 #include "iobuffer.h" |
| 0 | 5 #include "temp-string.h" |
| 6 #include "mmap-util.h" | |
| 7 #include "message-parser.h" | |
| 8 #include "message-size.h" | |
| 9 #include "imap-bodystructure.h" | |
| 10 #include "imap-envelope.h" | |
| 11 #include "imap-message-cache.h" | |
| 12 | |
| 13 #include <unistd.h> | |
| 14 | |
| 15 /* It's not very useful to cache lots of messages, as they're mostly wanted | |
| 16 just once. The biggest reason for this cache to exist is to get just the | |
| 17 latest message. */ | |
| 18 #define MAX_CACHED_MESSAGES 16 | |
| 19 | |
| 20 #define DEFAULT_MESSAGE_POOL_SIZE 4096 | |
| 21 | |
| 22 typedef struct _CachedMessage CachedMessage; | |
| 23 | |
| 24 struct _CachedMessage { | |
| 25 CachedMessage *next; | |
| 26 | |
| 27 Pool pool; | |
| 28 unsigned int uid; | |
| 29 | |
| 30 MessagePart *part; | |
| 31 MessageSize *hdr_size; | |
| 32 MessageSize *body_size; | |
| 33 MessageSize *partial_size; | |
| 34 | |
| 35 char *cached_body; | |
| 36 char *cached_bodystructure; | |
| 37 char *cached_envelope; | |
| 38 | |
| 39 MessagePartEnvelopeData *envelope; | |
| 40 }; | |
| 41 | |
| 42 struct _ImapMessageCache { | |
| 43 CachedMessage *messages; | |
| 44 int messages_count; | |
| 45 | |
| 46 CachedMessage *open_msg; | |
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47 IOBuffer *open_inbuf; |
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48 size_t open_size, open_virtual_size; |
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49 |
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50 IOBuffer *(*inbuf_rewind)(IOBuffer *inbuf, void *context); |
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51 void *context; |
| 0 | 52 }; |
| 53 | |
| 54 ImapMessageCache *imap_msgcache_alloc(void) | |
| 55 { | |
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56 return i_new(ImapMessageCache, 1); |
| 0 | 57 } |
| 58 | |
| 59 static void cached_message_free(CachedMessage *msg) | |
| 60 { | |
| 61 pool_unref(msg->pool); | |
| 62 } | |
| 63 | |
| 64 void imap_msgcache_clear(ImapMessageCache *cache) | |
| 65 { | |
| 66 CachedMessage *next; | |
| 67 | |
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68 imap_msgcache_close(cache); |
| 0 | 69 |
| 70 while (cache->messages != NULL) { | |
| 71 next = cache->messages->next; | |
| 72 cached_message_free(cache->messages); | |
| 73 cache->messages = next; | |
| 74 } | |
| 75 } | |
| 76 | |
| 77 void imap_msgcache_free(ImapMessageCache *cache) | |
| 78 { | |
| 79 imap_msgcache_clear(cache); | |
| 80 i_free(cache); | |
| 81 } | |
| 82 | |
| 83 static CachedMessage *cache_new(ImapMessageCache *cache, unsigned int uid) | |
| 84 { | |
| 85 CachedMessage *msg, **msgp; | |
| 86 Pool pool; | |
| 87 | |
| 88 if (cache->messages_count < MAX_CACHED_MESSAGES) | |
| 89 cache->messages_count++; | |
| 90 else { | |
| 91 /* remove the last message from cache */ | |
| 92 msgp = &cache->messages; | |
| 93 while ((*msgp)->next != NULL) | |
| 94 msgp = &(*msgp)->next; | |
| 95 | |
| 96 cached_message_free(*msgp); | |
| 97 *msgp = NULL; | |
| 98 } | |
| 99 | |
| 100 pool = pool_create("CachedMessage", DEFAULT_MESSAGE_POOL_SIZE, FALSE); | |
| 101 | |
| 102 msg = p_new(pool, CachedMessage, 1); | |
| 103 msg->pool = pool; | |
| 104 msg->uid = uid; | |
| 105 | |
| 106 msg->next = cache->messages; | |
| 107 cache->messages = msg; | |
| 108 return msg; | |
| 109 } | |
| 110 | |
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111 static CachedMessage *cache_open_or_create(ImapMessageCache *cache, |
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112 unsigned int uid) |
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113 { |
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114 CachedMessage **pos, *msg; |
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115 |
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116 pos = &cache->messages; |
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117 for (; *pos != NULL; pos = &(*pos)->next) { |
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118 if ((*pos)->uid == uid) |
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119 break; |
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120 } |
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121 |
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122 if (*pos == NULL) { |
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123 /* not found, add it */ |
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124 msg = cache_new(cache, uid); |
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125 } else if (*pos != cache->messages) { |
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126 /* move it to first in list */ |
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127 msg = *pos; |
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128 *pos = msg->next; |
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129 |
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130 msg->next = cache->messages; |
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131 cache->messages = msg; |
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132 } else { |
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133 msg = *pos; |
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134 } |
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135 |
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136 return msg; |
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137 } |
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138 |
| 0 | 139 static void parse_envelope_header(MessagePart *part, |
| 140 const char *name, unsigned int name_len, | |
| 141 const char *value, unsigned int value_len, | |
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142 void *context) |
| 0 | 143 { |
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144 CachedMessage *msg = context; |
| 0 | 145 |
| 146 if (part == NULL || part->parent == NULL) { | |
| 147 /* parse envelope headers if we're at the root message part */ | |
| 148 imap_envelope_parse_header(msg->pool, &msg->envelope, | |
| 149 t_strndup(name, name_len), | |
| 150 value, value_len); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 static CachedMessage *cache_find(ImapMessageCache *cache, unsigned int uid) | |
| 155 { | |
| 156 CachedMessage *msg; | |
| 157 | |
| 158 for (msg = cache->messages; msg != NULL; msg = msg->next) { | |
| 159 if (msg->uid == uid) | |
| 160 return msg; | |
| 161 } | |
| 162 | |
| 163 return NULL; | |
| 164 } | |
| 165 | |
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166 static void imap_msgcache_get_inbuf(ImapMessageCache *cache, off_t offset) |
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167 { |
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168 if (offset < cache->open_inbuf->offset) { |
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169 /* need to rewind */ |
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170 cache->open_inbuf = cache->inbuf_rewind(cache->open_inbuf, |
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171 cache->context); |
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172 if (cache->open_inbuf == NULL) |
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173 i_fatal("Can't rewind message buffer"); |
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174 } |
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175 |
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176 io_buffer_skip(cache->open_inbuf, offset - cache->open_inbuf->offset); |
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177 } |
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178 |
| 0 | 179 int imap_msgcache_is_cached(ImapMessageCache *cache, unsigned int uid, |
| 180 ImapCacheField fields) | |
| 181 { | |
| 182 CachedMessage *msg; | |
| 183 | |
| 184 if (cache->open_msg != NULL && cache->open_msg->uid == uid) | |
| 185 return TRUE; | |
| 186 | |
| 187 /* not open, see if the wanted fields are cached */ | |
| 188 msg = cache_find(cache, uid); | |
| 189 if (msg == NULL) | |
| 190 return FALSE; | |
| 191 | |
| 192 if ((fields & IMAP_CACHE_BODY) && msg->cached_body == NULL) | |
| 193 return FALSE; | |
| 194 if ((fields & IMAP_CACHE_BODYSTRUCTURE) && | |
| 195 msg->cached_bodystructure == NULL) | |
| 196 return FALSE; | |
| 197 if ((fields & IMAP_CACHE_ENVELOPE) && msg->cached_envelope == NULL) | |
| 198 return FALSE; | |
| 199 | |
| 200 if ((fields & IMAP_CACHE_MESSAGE_OPEN) && msg != cache->open_msg) | |
| 201 return FALSE; | |
| 202 if ((fields & IMAP_CACHE_MESSAGE_PART) && msg->part == NULL) | |
| 203 return FALSE; | |
| 204 if ((fields & IMAP_CACHE_MESSAGE_HDR_SIZE) && msg->hdr_size == NULL) | |
| 205 return FALSE; | |
| 206 if ((fields & IMAP_CACHE_MESSAGE_BODY_SIZE) && msg->body_size == NULL) | |
| 207 return FALSE; | |
| 208 | |
| 209 return TRUE; | |
| 210 } | |
| 211 | |
| 212 /* Caches the fields for given message if possible */ | |
| 213 static void cache_fields(ImapMessageCache *cache, CachedMessage *msg, | |
| 214 ImapCacheField fields) | |
| 215 { | |
| 216 const char *value; | |
| 217 | |
| 218 t_push(); | |
| 219 if ((fields & IMAP_CACHE_BODY) && msg->cached_body == NULL && | |
| 220 msg == cache->open_msg) { | |
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221 imap_msgcache_get_inbuf(cache, 0); |
| 0 | 222 value = imap_part_get_bodystructure(msg->pool, &msg->part, |
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223 cache->open_inbuf, FALSE); |
| 0 | 224 msg->cached_body = p_strdup(msg->pool, value); |
| 225 } | |
| 226 | |
| 227 if ((fields & IMAP_CACHE_BODYSTRUCTURE) && | |
| 228 msg->cached_bodystructure == NULL && msg == cache->open_msg) { | |
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229 imap_msgcache_get_inbuf(cache, 0); |
| 0 | 230 value = imap_part_get_bodystructure(msg->pool, &msg->part, |
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231 cache->open_inbuf, TRUE); |
| 0 | 232 msg->cached_bodystructure = p_strdup(msg->pool, value); |
| 233 } | |
| 234 | |
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235 if ((fields & IMAP_CACHE_ENVELOPE) && msg->cached_envelope == NULL) { |
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236 if (msg->envelope == NULL && msg == cache->open_msg) { |
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237 /* envelope isn't parsed yet, do it. header size |
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238 is calculated anyway so save it */ |
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239 if (msg->hdr_size == NULL) { |
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240 msg->hdr_size = p_new(msg->pool, |
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241 MessageSize, 1); |
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242 } |
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243 |
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244 imap_msgcache_get_inbuf(cache, 0); |
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245 message_parse_header(NULL, cache->open_inbuf, |
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246 msg->hdr_size, |
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247 parse_envelope_header, msg); |
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248 } |
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249 |
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250 if (msg->envelope != NULL) { |
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251 value = imap_envelope_get_part_data(msg->envelope); |
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252 msg->cached_envelope = p_strdup(msg->pool, value); |
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253 } |
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254 } |
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255 |
| 0 | 256 if ((fields & IMAP_CACHE_MESSAGE_PART) && msg->part == NULL && |
| 257 msg == cache->open_msg) { | |
| 258 /* we need to parse the message */ | |
| 259 MessageHeaderFunc func; | |
| 260 | |
| 261 if ((fields & IMAP_CACHE_ENVELOPE) && | |
| 262 msg->cached_envelope == NULL) { | |
| 263 /* we need envelope too, fill the info | |
| 264 while parsing headers */ | |
| 265 func = parse_envelope_header; | |
| 266 } else { | |
| 267 func = NULL; | |
| 268 } | |
| 269 | |
|
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270 imap_msgcache_get_inbuf(cache, 0); |
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271 msg->part = message_parse(msg->pool, cache->open_inbuf, |
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272 func, msg); |
| 0 | 273 } |
| 274 | |
| 275 if ((fields & IMAP_CACHE_MESSAGE_BODY_SIZE) && | |
| 276 msg->body_size == NULL && | |
| 277 (msg == cache->open_msg || msg->part != NULL)) { | |
| 278 /* fill the body size, and while at it fill the header size | |
| 279 as well */ | |
| 280 if (msg->hdr_size == NULL) | |
| 281 msg->hdr_size = p_new(msg->pool, MessageSize, 1); | |
| 282 msg->body_size = p_new(msg->pool, MessageSize, 1); | |
| 283 | |
| 284 if (msg->part != NULL) { | |
| 285 /* easy, get it from root part */ | |
| 286 *msg->hdr_size = msg->part->header_size; | |
| 287 *msg->body_size = msg->part->body_size; | |
| 288 } else { | |
| 289 /* first get the header's size, then calculate the | |
| 290 body size from it and the total virtual size */ | |
|
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291 imap_msgcache_get_inbuf(cache, 0); |
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292 message_get_header_size(cache->open_inbuf, |
| 0 | 293 msg->hdr_size); |
| 294 | |
| 295 msg->body_size->lines = 0; | |
| 296 msg->body_size->physical_size = cache->open_size - | |
| 297 msg->hdr_size->physical_size; | |
| 298 msg->body_size->virtual_size = | |
| 299 cache->open_virtual_size - | |
| 300 msg->hdr_size->virtual_size; | |
| 301 } | |
| 302 } | |
| 303 | |
| 304 if ((fields & IMAP_CACHE_MESSAGE_HDR_SIZE) && msg->hdr_size == NULL && | |
| 305 (msg == cache->open_msg || msg->part != NULL)) { | |
| 306 msg->hdr_size = p_new(msg->pool, MessageSize, 1); | |
| 307 | |
| 308 if (msg->part != NULL) { | |
| 309 /* easy, get it from root part */ | |
| 310 *msg->hdr_size = msg->part->header_size; | |
| 311 } else { | |
| 312 /* need to do some light parsing */ | |
|
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313 imap_msgcache_get_inbuf(cache, 0); |
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314 message_get_header_size(cache->open_inbuf, |
| 0 | 315 msg->hdr_size); |
| 316 } | |
| 317 } | |
| 318 | |
| 319 t_pop(); | |
| 320 } | |
| 321 | |
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322 void imap_msgcache_message(ImapMessageCache *cache, unsigned int uid, |
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323 ImapCacheField fields, size_t virtual_size, |
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324 size_t pv_headers_size, size_t pv_body_size, |
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325 IOBuffer *inbuf, |
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326 IOBuffer *(*inbuf_rewind)(IOBuffer *inbuf, |
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327 void *context), |
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328 void *context) |
| 0 | 329 { |
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330 CachedMessage *msg; |
| 0 | 331 |
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332 msg = cache_open_or_create(cache, uid); |
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333 if (cache->open_msg != msg) { |
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334 imap_msgcache_close(cache); |
| 0 | 335 |
| 336 cache->open_msg = msg; | |
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337 cache->open_inbuf = inbuf; |
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338 cache->open_size = cache->open_inbuf->stop_offset - |
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339 cache->open_inbuf->offset; |
| 0 | 340 cache->open_virtual_size = virtual_size; |
| 341 | |
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342 cache->inbuf_rewind = inbuf_rewind; |
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343 cache->context = context; |
| 0 | 344 } |
| 345 | |
| 346 if (pv_headers_size != 0 && msg->hdr_size == NULL) { | |
| 347 /* physical size == virtual size */ | |
| 348 msg->hdr_size = p_new(msg->pool, MessageSize, 1); | |
| 349 msg->hdr_size->physical_size = msg->hdr_size->virtual_size = | |
| 350 pv_headers_size; | |
| 351 } | |
| 352 | |
| 353 if (pv_body_size != 0 && msg->body_size == NULL) { | |
| 354 /* physical size == virtual size */ | |
| 355 msg->body_size = p_new(msg->pool, MessageSize, 1); | |
| 356 msg->body_size->physical_size = msg->body_size->virtual_size = | |
| 357 pv_body_size; | |
| 358 } | |
| 359 | |
| 360 cache_fields(cache, msg, fields); | |
| 361 } | |
| 362 | |
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363 void imap_msgcache_close(ImapMessageCache *cache) |
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364 { |
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365 if (cache->open_inbuf != NULL) { |
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366 (void)close(cache->open_inbuf->fd); |
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367 io_buffer_destroy(cache->open_inbuf); |
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368 cache->open_inbuf = NULL; |
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369 } |
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370 |
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371 cache->open_msg = NULL; |
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372 cache->open_size = cache->open_virtual_size = 0; |
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373 } |
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374 |
| 0 | 375 void imap_msgcache_set(ImapMessageCache *cache, unsigned int uid, |
| 376 ImapCacheField field, const char *value) | |
| 377 { | |
| 378 CachedMessage *msg; | |
| 379 | |
| 380 msg = cache_find(cache, uid); | |
| 381 if (msg == NULL) | |
| 382 msg = cache_new(cache, uid); | |
| 383 | |
| 384 switch (field) { | |
| 385 case IMAP_CACHE_BODY: | |
| 386 msg->cached_body = p_strdup(msg->pool, value); | |
| 387 break; | |
| 388 case IMAP_CACHE_BODYSTRUCTURE: | |
| 389 msg->cached_bodystructure = p_strdup(msg->pool, value); | |
| 390 break; | |
| 391 case IMAP_CACHE_ENVELOPE: | |
| 392 msg->cached_envelope = p_strdup(msg->pool, value); | |
| 393 break; | |
| 394 default: | |
| 395 i_assert(0); | |
| 396 } | |
| 397 } | |
| 398 | |
| 399 const char *imap_msgcache_get(ImapMessageCache *cache, unsigned int uid, | |
| 400 ImapCacheField field) | |
| 401 { | |
| 402 CachedMessage *msg; | |
| 403 | |
| 404 msg = cache_find(cache, uid); | |
| 405 if (msg == NULL) | |
| 406 return NULL; | |
| 407 | |
| 408 switch (field) { | |
| 409 case IMAP_CACHE_BODY: | |
| 410 if (msg->cached_body == NULL) | |
| 411 cache_fields(cache, msg, field); | |
| 412 return msg->cached_body; | |
| 413 case IMAP_CACHE_BODYSTRUCTURE: | |
| 414 if (msg->cached_bodystructure == NULL) | |
| 415 cache_fields(cache, msg, field); | |
| 416 return msg->cached_bodystructure; | |
| 417 case IMAP_CACHE_ENVELOPE: | |
| 418 if (msg->cached_envelope == NULL) | |
| 419 cache_fields(cache, msg, field); | |
| 420 return msg->cached_envelope; | |
| 421 default: | |
| 422 i_assert(0); | |
| 423 } | |
| 424 | |
| 425 return NULL; | |
| 426 } | |
| 427 | |
| 428 MessagePart *imap_msgcache_get_parts(ImapMessageCache *cache, unsigned int uid) | |
| 429 { | |
| 430 CachedMessage *msg; | |
| 431 | |
| 432 msg = cache_find(cache, uid); | |
| 433 if (msg == NULL) | |
| 434 return NULL; | |
| 435 | |
| 436 if (msg->part == NULL) | |
| 437 cache_fields(cache, msg, IMAP_CACHE_MESSAGE_PART); | |
| 438 return msg->part; | |
| 439 } | |
| 440 | |
| 441 int imap_msgcache_get_rfc822(ImapMessageCache *cache, unsigned int uid, | |
| 442 MessageSize *hdr_size, MessageSize *body_size, | |
|
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443 IOBuffer **inbuf) |
| 0 | 444 { |
| 445 CachedMessage *msg; | |
|
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446 off_t offset; |
| 0 | 447 |
|
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448 if (inbuf != NULL) { |
| 0 | 449 if (cache->open_msg == NULL || cache->open_msg->uid != uid) |
| 450 return FALSE; | |
| 451 | |
| 452 msg = cache->open_msg; | |
|
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453 |
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454 offset = hdr_size != NULL ? 0 : |
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455 msg->hdr_size->physical_size; |
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456 imap_msgcache_get_inbuf(cache, offset); |
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457 *inbuf = cache->open_inbuf; |
| 0 | 458 } else { |
| 459 msg = cache_find(cache, uid); | |
| 460 if (msg == NULL) | |
| 461 return FALSE; | |
| 462 } | |
| 463 | |
| 464 if (body_size != NULL) { | |
| 465 if (msg->body_size == NULL) | |
| 466 cache_fields(cache, msg, IMAP_CACHE_MESSAGE_BODY_SIZE); | |
| 467 if (msg->body_size == NULL) | |
| 468 return FALSE; | |
| 469 *body_size = *msg->body_size; | |
| 470 } | |
| 471 | |
| 472 if (hdr_size != NULL) { | |
| 473 if (msg->hdr_size == NULL) | |
| 474 cache_fields(cache, msg, IMAP_CACHE_MESSAGE_HDR_SIZE); | |
| 475 if (msg->hdr_size == NULL) | |
| 476 return FALSE; | |
| 477 *hdr_size = *msg->hdr_size; | |
| 478 } | |
| 479 | |
| 480 return TRUE; | |
| 481 } | |
| 482 | |
|
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|
483 static void get_partial_size(IOBuffer *inbuf, |
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|
484 off_t virtual_skip, off_t max_virtual_size, |
| 0 | 485 MessageSize *partial, MessageSize *dest) |
| 486 { | |
|
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487 unsigned char *msg; |
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|
488 unsigned int size; |
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489 int cr_skipped; |
| 0 | 490 |
| 491 /* see if we can use the existing partial */ | |
|
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492 if ((off_t)partial->virtual_size > virtual_skip) |
| 0 | 493 memset(partial, 0, sizeof(MessageSize)); |
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494 else { |
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495 io_buffer_skip(inbuf, partial->physical_size); |
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496 virtual_skip -= partial->virtual_size; |
| 0 | 497 } |
| 498 | |
|
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499 message_skip_virtual(inbuf, virtual_skip, partial, &cr_skipped); |
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500 |
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501 if (!cr_skipped) { |
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502 /* see if we need to add virtual CR */ |
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503 while (io_buffer_read_data(inbuf, &msg, &size, 0) >= 0) { |
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504 if (size > 0) { |
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505 if (msg[0] == '\n') |
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506 dest->virtual_size++; |
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507 break; |
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508 } |
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509 } |
| 0 | 510 } |
| 511 | |
|
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512 message_get_body_size(inbuf, dest, max_virtual_size); |
| 0 | 513 } |
| 514 | |
| 515 int imap_msgcache_get_rfc822_partial(ImapMessageCache *cache, unsigned int uid, | |
|
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516 off_t virtual_skip, off_t max_virtual_size, |
| 0 | 517 int get_header, MessageSize *size, |
|
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518 IOBuffer **inbuf) |
| 0 | 519 { |
| 520 CachedMessage *msg; | |
| 521 off_t physical_skip; | |
| 522 int size_got; | |
| 523 | |
| 524 msg = cache->open_msg; | |
| 525 if (msg == NULL || msg->uid != uid) | |
| 526 return FALSE; | |
| 527 | |
| 528 if (msg->hdr_size == NULL) { | |
| 529 msg->hdr_size = p_new(msg->pool, MessageSize, 1); | |
|
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530 imap_msgcache_get_inbuf(cache, 0); |
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|
531 message_get_header_size(cache->open_inbuf, msg->hdr_size); |
| 0 | 532 } |
| 533 | |
| 534 physical_skip = get_header ? 0 : msg->hdr_size->physical_size; | |
| 535 | |
| 536 /* see if we can do this easily */ | |
| 537 size_got = FALSE; | |
| 538 if (virtual_skip == 0) { | |
|
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539 if (max_virtual_size < 0 && msg->body_size == NULL) { |
| 0 | 540 msg->body_size = p_new(msg->pool, MessageSize, 1); |
| 541 msg->body_size->physical_size = cache->open_size - | |
| 542 msg->hdr_size->physical_size; | |
| 543 msg->body_size->virtual_size = | |
| 544 cache->open_virtual_size - | |
| 545 msg->hdr_size->virtual_size; | |
| 546 } | |
| 547 | |
| 548 if (msg->body_size != NULL && | |
|
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549 (max_virtual_size < 0 || |
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550 max_virtual_size >= (off_t)msg->body_size->virtual_size)) { |
| 0 | 551 *size = *msg->body_size; |
| 552 size_got = TRUE; | |
| 553 } | |
| 554 } | |
| 555 | |
| 556 if (!size_got) { | |
| 557 if (msg->partial_size == NULL) | |
| 558 msg->partial_size = p_new(msg->pool, MessageSize, 1); | |
| 559 | |
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560 imap_msgcache_get_inbuf(cache, msg->hdr_size->physical_size); |
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561 get_partial_size(cache->open_inbuf, virtual_skip, |
| 0 | 562 max_virtual_size, msg->partial_size, size); |
| 563 | |
| 564 physical_skip += msg->partial_size->physical_size; | |
| 565 } | |
| 566 | |
| 567 if (get_header) | |
| 568 message_size_add(size, msg->hdr_size); | |
| 569 | |
| 570 /* seek to wanted position */ | |
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571 imap_msgcache_get_inbuf(cache, physical_skip); |
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572 *inbuf = cache->open_inbuf; |
| 0 | 573 return TRUE; |
| 574 } | |
| 575 | |
| 576 int imap_msgcache_get_data(ImapMessageCache *cache, unsigned int uid, | |
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577 IOBuffer **inbuf) |
| 0 | 578 { |
| 579 if (cache->open_msg == NULL || cache->open_msg->uid != uid) | |
| 580 return FALSE; | |
| 581 | |
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582 imap_msgcache_get_inbuf(cache, 0); |
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583 *inbuf = cache->open_inbuf; |
| 0 | 584 return TRUE; |
| 585 } |