Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/plugins/mbox-snarf/mbox-snarf-plugin.c @ 9575:0a00dcc4f0ea HEAD

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lib-storage: Allow shared namespace prefix to use %variable modifiers.
author Timo Sirainen <tss@iki.fi>
date Wed, 26 May 2010 17:07:51 +0100
parents 00cd9aacd03c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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00cd9aacd03c Updated copyright notices to include year 2010.
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1 /* Copyright (c) 2007-2010 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "array.h"
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5 #include "home-expand.h"
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6 #include "mail-search-build.h"
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7 #include "mail-storage-private.h"
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8 #include "mailbox-list-private.h"
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9 #include "mbox-snarf-plugin.h"
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10
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11 #include <stdlib.h>
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12 #include <sys/stat.h>
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13
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14 #define MBOX_SNARF_CONTEXT(obj) \
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15 MODULE_CONTEXT(obj, mbox_snarf_storage_module)
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16
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17 struct mbox_snarf_mail_storage {
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18 union mail_storage_module_context module_ctx;
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19
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20 const char *snarf_inbox_path;
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21 bool open_spool_inbox;
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22 };
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23
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24 struct mbox_snarf_mailbox {
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25 union mailbox_module_context module_ctx;
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26 };
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27
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28 const char *mbox_snarf_plugin_version = PACKAGE_VERSION;
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29
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30 static void (*mbox_snarf_next_hook_mail_storage_created)
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31 (struct mail_storage *storage);
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32
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33 static MODULE_CONTEXT_DEFINE_INIT(mbox_snarf_storage_module,
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34 &mail_storage_module_register);
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35
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36 static int mbox_snarf(struct mailbox *srcbox, struct mailbox *destbox)
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37 {
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38 struct mail_search_args *search_args;
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39 struct mail_search_context *search_ctx;
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40 struct mailbox_transaction_context *src_trans, *dest_trans;
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41 struct mail_save_context *save_ctx;
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42 struct mail *mail;
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43 enum mail_error error;
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44 int ret;
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45
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46 if (mailbox_sync(srcbox, MAILBOX_SYNC_FLAG_FULL_READ, 0, NULL) < 0)
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47 return -1;
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48
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49 src_trans = mailbox_transaction_begin(srcbox, 0);
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50 dest_trans = mailbox_transaction_begin(destbox,
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51 MAILBOX_TRANSACTION_FLAG_EXTERNAL);
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52
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53 search_args = mail_search_build_init();
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54 mail_search_build_add_all(search_args);
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55 search_ctx = mailbox_search_init(src_trans, search_args, NULL);
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56 mail_search_args_unref(&search_args);
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57
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58 mail = mail_alloc(src_trans, MAIL_FETCH_STREAM_HEADER |
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59 MAIL_FETCH_STREAM_BODY, NULL);
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60 while ((ret = mailbox_search_next(search_ctx, mail)) > 0) {
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61 if (mail->expunged)
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62 continue;
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63
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64 save_ctx = mailbox_save_alloc(dest_trans);
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65 if (mailbox_copy(&save_ctx, mail) < 0 && !mail->expunged) {
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66 (void)mail_storage_get_last_error(destbox->storage,
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67 &error);
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68 /* if we failed because of out of disk space, just
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69 move those messages we managed to move so far. */
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70 if (error != MAIL_ERROR_NOSPACE)
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71 ret = -1;
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72 break;
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73 }
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74 mail_expunge(mail);
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75 }
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76 mail_free(&mail);
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77
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78 if (mailbox_search_deinit(&search_ctx) < 0)
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79 ret = -1;
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80
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81 /* commit the copied messages to the destination mailbox. if we crash
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82 between that and between expunging the messages from the source
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83 mailbox, we're left with duplicates. */
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84 if (ret < 0)
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85 mailbox_transaction_rollback(&dest_trans);
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86 else if (mailbox_transaction_commit(&dest_trans) < 0)
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87 ret = -1;
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88
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89 if (ret < 0)
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90 mailbox_transaction_rollback(&src_trans);
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91 else {
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92 if (mailbox_transaction_commit(&src_trans) < 0)
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93 ret = -1;
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94 }
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95 if (ret == 0) {
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96 if (mailbox_sync(srcbox, 0, 0, NULL) < 0)
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97 ret = -1;
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98 }
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99 return ret;
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100 }
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101
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102 static struct mailbox_sync_context *
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103 mbox_snarf_sync_init(struct mailbox *box, enum mailbox_sync_flags flags)
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104 {
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105 struct mbox_snarf_mail_storage *mstorage =
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106 MBOX_SNARF_CONTEXT(box->storage);
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107 struct mail_storage *storage;
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108 struct mbox_snarf_mailbox *mbox = MBOX_SNARF_CONTEXT(box);
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109 struct mailbox *spool_mbox;
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110 struct mailbox_sync_context *ctx;
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111
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112 /* try to open the spool mbox */
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113 mstorage->open_spool_inbox = TRUE;
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114 storage = box->storage;
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115 spool_mbox = mailbox_open(&storage, "INBOX", NULL,
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116 MAILBOX_OPEN_KEEP_LOCKED |
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117 MAILBOX_OPEN_KEEP_RECENT |
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118 MAILBOX_OPEN_NO_INDEX_FILES);
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119 mstorage->open_spool_inbox = FALSE;
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120
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121 if (spool_mbox != NULL)
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122 mbox_snarf(spool_mbox, box);
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123
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124 ctx = mbox->module_ctx.super.sync_init(box, flags);
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125
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126 if (spool_mbox != NULL)
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127 mailbox_close(&spool_mbox);
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128 return ctx;
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129 }
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130
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131 static struct mailbox *
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132 mbox_snarf_mailbox_open(struct mail_storage *storage, const char *name,
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133 struct istream *input, enum mailbox_open_flags flags)
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134 {
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135 struct mbox_snarf_mail_storage *mstorage =
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136 MBOX_SNARF_CONTEXT(storage);
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137 struct mailbox_list *list;
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138 struct mailbox *box;
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139 struct mbox_snarf_mailbox *mbox;
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140 struct stat st;
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141 enum mail_storage_flags old_flags = storage->flags;
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142 enum mailbox_list_flags old_list_flags;
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143 bool use_snarfing = FALSE;
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144
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145 list = mail_storage_get_list(storage);
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146 old_list_flags = list->flags;
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147
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148 if (strcasecmp(name, "INBOX") == 0 && !mstorage->open_spool_inbox) {
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149 if (stat(mstorage->snarf_inbox_path, &st) == 0) {
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150 /* use ~/mbox as the INBOX */
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151 name = mstorage->snarf_inbox_path;
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152 use_snarfing = TRUE;
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153 storage->flags |= MAIL_STORAGE_FLAG_FULL_FS_ACCESS;
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154 list->flags |= MAILBOX_LIST_FLAG_FULL_FS_ACCESS;
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155 } else if (errno != ENOENT) {
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156 mail_storage_set_critical(storage,
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157 "stat(%s) failed: %m",
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158 mstorage->snarf_inbox_path);
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159 }
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160 }
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161
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162 box = mstorage->module_ctx.super.
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163 mailbox_open(storage, name, input, flags);
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164 storage->flags = old_flags;
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165 list->flags = old_list_flags;
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166
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167 if (box == NULL || !use_snarfing)
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168 return box;
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169
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170 mbox = p_new(box->pool, struct mbox_snarf_mailbox, 1);
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171 mbox->module_ctx.super = box->v;
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172
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173 box->v.sync_init = mbox_snarf_sync_init;
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174 MODULE_CONTEXT_SET(box, mbox_snarf_storage_module, mbox);
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175 return box;
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176 }
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177
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178 static void mbox_snarf_mail_storage_created(struct mail_storage *storage)
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179 {
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180 struct mbox_snarf_mail_storage *mstorage;
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181 const char *path;
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182
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183 path = mail_user_home_expand(storage->ns->user, getenv("MBOX_SNARF"));
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184 mstorage = p_new(storage->pool, struct mbox_snarf_mail_storage, 1);
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185 mstorage->snarf_inbox_path = p_strdup(storage->pool, path);
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186 mstorage->module_ctx.super = storage->v;
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187 storage->v.mailbox_open = mbox_snarf_mailbox_open;
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188
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189 MODULE_CONTEXT_SET(storage, mbox_snarf_storage_module, mstorage);
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190
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191 if (mbox_snarf_next_hook_mail_storage_created != NULL)
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192 mbox_snarf_next_hook_mail_storage_created(storage);
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193 }
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194
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195 void mbox_snarf_plugin_init(void)
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196 {
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197 const char *path;
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198
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199 path = getenv("MBOX_SNARF");
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200 if (path != NULL) {
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201 mbox_snarf_next_hook_mail_storage_created =
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202 hook_mail_storage_created;
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203 hook_mail_storage_created = mbox_snarf_mail_storage_created;
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204 } else if (getenv("DEBUG") != NULL)
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205 i_info("mbox_snarf: No mbox_snarf setting - plugin disabled");
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206 }
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207
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208 void mbox_snarf_plugin_deinit(void)
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209 {
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210 if (getenv("MBOX_SNARF") != NULL) {
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211 hook_mail_storage_created =
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212 mbox_snarf_next_hook_mail_storage_created;
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213 }
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214 }