Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/plugins/mbox-snarf/mbox-snarf-plugin.c @ 7462:068f6eefc62b HEAD

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
next_hook should be called after our hook is finished with its doings, that way they get executed in the intended order. This should fix some problems when multiple plugins are used.
author Timo Sirainen <tss@iki.fi>
date Fri, 25 Apr 2008 01:31:05 +0300
parents 7ed926ed7aa4
children 8e206e25a142
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7ed926ed7aa4 Updated copyright notices to include year 2008.
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1 /* Copyright (c) 2007-2008 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.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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27 struct mailbox *spool_mbox;
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28 };
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29
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30 const char *mbox_snarf_plugin_version = PACKAGE_VERSION;
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32 static void (*mbox_snarf_next_hook_mail_storage_created)
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33 (struct mail_storage *storage);
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34
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35 static MODULE_CONTEXT_DEFINE_INIT(mbox_snarf_storage_module,
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36 &mail_storage_module_register);
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37
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38 static int mbox_snarf(struct mailbox *srcbox, struct mailbox *destbox)
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39 {
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40 struct mail_search_arg search_arg;
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41 struct mail_search_context *search_ctx;
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42 struct mailbox_transaction_context *src_trans, *dest_trans;
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43 struct mail *mail;
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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 memset(&search_arg, 0, sizeof(search_arg));
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50 search_arg.type = SEARCH_ALL;
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51
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52 src_trans = mailbox_transaction_begin(srcbox, 0);
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53 dest_trans = mailbox_transaction_begin(destbox,
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54 MAILBOX_TRANSACTION_FLAG_EXTERNAL);
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55 search_ctx = mailbox_search_init(src_trans, NULL, &search_arg, NULL);
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56
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57 mail = mail_alloc(src_trans, MAIL_FETCH_STREAM_HEADER |
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58 MAIL_FETCH_STREAM_BODY, NULL);
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59 while ((ret = mailbox_search_next(search_ctx, mail)) > 0) {
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60 if (mail->expunged)
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61 continue;
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62
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63 if (mailbox_copy(dest_trans, mail, 0, NULL, NULL) < 0) {
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64 if (!mail->expunged) {
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65 ret = -1;
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66 break;
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67 }
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68 }
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69 mail_expunge(mail);
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70 }
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71 mail_free(&mail);
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72
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73 if (mailbox_search_deinit(&search_ctx) < 0)
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74 ret = -1;
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75
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76 /* commit the copied messages to the destination mailbox. if we crash
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77 between that and between expunging the messages from the source
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78 mailbox, we're left with duplicates. */
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79 if (ret < 0)
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80 mailbox_transaction_rollback(&dest_trans);
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81 else if (mailbox_transaction_commit(&dest_trans) < 0)
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82 ret = -1;
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83
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84 if (ret < 0)
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85 mailbox_transaction_rollback(&src_trans);
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86 else {
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87 if (mailbox_transaction_commit(&src_trans) < 0)
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88 ret = -1;
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89 }
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90 return ret;
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91 }
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93 static struct mailbox_sync_context *
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94 mbox_snarf_sync_init(struct mailbox *box, enum mailbox_sync_flags flags)
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95 {
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96 struct mbox_snarf_mail_storage *mstorage =
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97 MBOX_SNARF_CONTEXT(box->storage);
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98 struct mbox_snarf_mailbox *mbox = MBOX_SNARF_CONTEXT(box);
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99
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100 if (mbox->spool_mbox == NULL) {
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101 /* try to open the spool mbox */
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102 mstorage->open_spool_inbox = TRUE;
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103 mbox->spool_mbox =
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104 mailbox_open(box->storage, "INBOX", NULL,
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105 MAILBOX_OPEN_KEEP_RECENT |
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106 MAILBOX_OPEN_NO_INDEX_FILES);
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107 mstorage->open_spool_inbox = FALSE;
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108 }
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109
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110 if (mbox->spool_mbox != NULL)
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111 mbox_snarf(mbox->spool_mbox, box);
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112
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113 return mbox->module_ctx.super.sync_init(box, flags);
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114 }
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115
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116 static struct mailbox *
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117 mbox_snarf_mailbox_open(struct mail_storage *storage, const char *name,
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118 struct istream *input, enum mailbox_open_flags flags)
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119 {
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120 struct mbox_snarf_mail_storage *mstorage =
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121 MBOX_SNARF_CONTEXT(storage);
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122 struct mailbox_list *list;
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123 struct mailbox *box;
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124 struct mbox_snarf_mailbox *mbox;
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125 struct stat st;
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126 enum mail_storage_flags old_flags = storage->flags;
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127 enum mailbox_list_flags old_list_flags;
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128 bool use_snarfing = FALSE;
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129
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130 list = mail_storage_get_list(storage);
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131 old_list_flags = list->flags;
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132
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133 if (strcasecmp(name, "INBOX") == 0 && !mstorage->open_spool_inbox) {
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134 if (stat(mstorage->snarf_inbox_path, &st) == 0) {
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135 /* use ~/mbox as the INBOX */
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136 name = mstorage->snarf_inbox_path;
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137 use_snarfing = TRUE;
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138 storage->flags |= MAIL_STORAGE_FLAG_FULL_FS_ACCESS;
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139 list->flags |= MAILBOX_LIST_FLAG_FULL_FS_ACCESS;
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140 } else if (errno != ENOENT) {
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141 mail_storage_set_critical(storage,
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142 "stat(%s) failed: %m",
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143 mstorage->snarf_inbox_path);
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144 }
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145 }
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146
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147 box = mstorage->module_ctx.super.
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148 mailbox_open(storage, name, input, flags);
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149 storage->flags = old_flags;
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150 list->flags = old_list_flags;
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151
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152 if (box == NULL || !use_snarfing)
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153 return box;
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154
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155 mbox = p_new(box->pool, struct mbox_snarf_mailbox, 1);
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156 mbox->module_ctx.super = box->v;
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157
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158 box->v.sync_init = mbox_snarf_sync_init;
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159 MODULE_CONTEXT_SET(box, mbox_snarf_storage_module, mbox);
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160 return box;
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161 }
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162
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163 static void mbox_snarf_mail_storage_created(struct mail_storage *storage)
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164 {
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165 struct mbox_snarf_mail_storage *mstorage;
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166
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167 mstorage = p_new(storage->pool, struct mbox_snarf_mail_storage, 1);
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168 mstorage->snarf_inbox_path =
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169 p_strdup(storage->pool, home_expand(getenv("MBOX_SNARF")));
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170 mstorage->module_ctx.super = storage->v;
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171 storage->v.mailbox_open = mbox_snarf_mailbox_open;
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172
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173 MODULE_CONTEXT_SET(storage, mbox_snarf_storage_module, mstorage);
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174
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175 if (mbox_snarf_next_hook_mail_storage_created != NULL)
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176 mbox_snarf_next_hook_mail_storage_created(storage);
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177 }
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178
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179 void mbox_snarf_plugin_init(void)
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180 {
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181 const char *path;
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182
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183 path = getenv("MBOX_SNARF");
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184 if (path != NULL) {
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185 mbox_snarf_next_hook_mail_storage_created =
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186 hook_mail_storage_created;
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187 hook_mail_storage_created = mbox_snarf_mail_storage_created;
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188 }
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189 }
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190
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191 void mbox_snarf_plugin_deinit(void)
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192 {
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193 if (getenv("MBOX_SNARF") != NULL) {
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194 hook_mail_storage_created =
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195 mbox_snarf_next_hook_mail_storage_created;
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196 }
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197 }