Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/lib-storage/mailbox-list.c @ 4848:967de900c73a HEAD
Mailbox list indexing and related changes. Currently works only with
maildir and mmap_disable=no. This allows doing STATUS to synced mailboxes
without opening their index files at all.
author | Timo Sirainen <tss@iki.fi> |
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date | Sun, 26 Nov 2006 00:17:39 +0200 |
parents | 2fb76f235a43 |
children | f1d77064884c |
rev | line source |
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1 /* Copyright (C) 2006 Timo Sirainen */ |
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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 "ioloop.h" |
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6 #include "mailbox-list-private.h" |
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7 |
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8 #include <time.h> |
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9 #include <dirent.h> |
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10 |
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11 /* 20 * (200+1) < 4096 which is the standard PATH_MAX. Having these settings |
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12 prevents malicious user from creating eg. "a/a/a/.../a" mailbox name and |
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13 then start renaming them to larger names from end to beginning, which |
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14 eventually would start causing the failures when trying to use too |
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15 long mailbox names. */ |
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16 #define MAILBOX_MAX_HIERARCHY_LEVELS 20 |
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17 #define MAILBOX_MAX_HIERARCHY_NAME_LENGTH 200 |
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18 |
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19 /* Message to show to users when critical error occurs */ |
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20 #define CRITICAL_MSG \ |
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21 "Internal error occurred. Refer to server log for more information." |
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22 #define CRITICAL_MSG_STAMP CRITICAL_MSG " [%Y-%m-%d %H:%M:%S]" |
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23 |
4814 | 24 unsigned int mailbox_list_module_id = 0; |
25 | |
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26 void (*hook_mailbox_list_created)(struct mailbox_list *list); |
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27 |
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28 static ARRAY_DEFINE(mailbox_list_drivers, const struct mailbox_list *); |
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29 |
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30 static bool mailbox_list_driver_find(const char *name, unsigned int *idx_r) |
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31 { |
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32 const struct mailbox_list *const *drivers; |
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33 unsigned int i, count; |
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34 |
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35 drivers = array_get(&mailbox_list_drivers, &count); |
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36 for (i = 0; i < count; i++) { |
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37 if (strcasecmp(drivers[i]->name, name) == 0) { |
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38 *idx_r = i; |
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39 return TRUE; |
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40 } |
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41 } |
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42 return FALSE; |
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43 } |
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44 |
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45 void mailbox_list_register(const struct mailbox_list *list) |
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46 { |
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47 if (!array_is_created(&mailbox_list_drivers)) |
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48 i_array_init(&mailbox_list_drivers, 4); |
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49 else { |
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50 unsigned int idx; |
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51 |
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52 if (mailbox_list_driver_find(list->name, &idx)) { |
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53 i_fatal("mailbox_list_register(%s): duplicate driver", |
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54 list->name); |
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55 } |
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56 } |
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57 |
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58 array_append(&mailbox_list_drivers, &list, 1); |
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59 } |
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60 |
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61 void mailbox_list_unregister(const struct mailbox_list *list) |
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62 { |
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63 unsigned int idx; |
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64 |
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65 if (!mailbox_list_driver_find(list->name, &idx)) { |
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66 i_fatal("mailbox_list_unregister(%s): unknown driver", |
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67 list->name); |
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68 } |
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69 array_delete(&mailbox_list_drivers, idx, 1); |
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70 |
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71 if (array_count(&mailbox_list_drivers) == 0) |
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72 array_free(&mailbox_list_drivers); |
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73 } |
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74 |
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75 int mailbox_list_init(const char *driver, |
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76 const struct mailbox_list_settings *set, |
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77 enum mailbox_list_flags flags, |
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78 mailbox_list_is_mailbox_t *callback, void *context, |
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79 struct mailbox_list **list_r, const char **error_r) |
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80 { |
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81 const struct mailbox_list *const *class_p; |
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82 struct mailbox_list *list; |
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83 unsigned int idx; |
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84 |
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85 if (!mailbox_list_driver_find(driver, &idx)) { |
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86 *error_r = "Unknown mailbox list driver"; |
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87 return -1; |
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88 } |
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89 |
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90 i_assert(*set->root_dir != '\0'); |
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91 i_assert(*set->subscription_fname != '\0'); |
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92 |
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93 class_p = array_idx(&mailbox_list_drivers, idx); |
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94 list = (*class_p)->v.alloc(); |
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95 |
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96 list->flags = flags; |
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97 list->callback = callback; |
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98 list->context = context; |
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99 |
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100 /* copy settings */ |
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101 list->set.root_dir = p_strdup(list->pool, set->root_dir); |
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102 list->set.index_dir = set->index_dir == NULL || |
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103 strcmp(set->index_dir, set->root_dir) == 0 ? NULL : |
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104 p_strdup(list->pool, set->index_dir); |
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105 list->set.control_dir = set->control_dir == NULL || |
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106 strcmp(set->control_dir, set->root_dir) == 0 ? NULL : |
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107 p_strdup(list->pool, set->control_dir); |
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108 |
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109 list->set.inbox_path = p_strdup(list->pool, set->inbox_path); |
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110 list->set.subscription_fname = |
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111 p_strdup(list->pool, set->subscription_fname); |
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112 list->set.maildir_name = p_strdup(list->pool, set->maildir_name); |
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113 |
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114 list->set.mail_storage_flags = set->mail_storage_flags; |
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115 list->set.mail_storage_lock_method = set->mail_storage_lock_method; |
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116 |
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117 if ((flags & MAILBOX_LIST_FLAG_DEBUG) != 0) { |
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118 i_info("%s: root=%s, index=%s, control=%s, inbox=%s", |
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119 driver, list->set.root_dir, |
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120 list->set.index_dir == NULL ? "" : list->set.index_dir, |
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121 list->set.control_dir == NULL ? |
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122 "" : list->set.control_dir, |
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123 list->set.inbox_path == NULL ? |
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124 "" : list->set.inbox_path); |
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125 } |
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126 |
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127 array_create(&list->module_contexts, list->pool, sizeof(void *), 5); |
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128 |
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129 if (hook_mailbox_list_created != NULL) |
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130 hook_mailbox_list_created(list); |
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131 |
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132 list->set.mail_storage_flags = NULL; |
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133 list->set.mail_storage_lock_method = NULL; |
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134 |
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135 *list_r = list; |
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136 return 0; |
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137 } |
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138 |
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139 void mailbox_list_deinit(struct mailbox_list *list) |
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140 { |
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141 i_free_and_null(list->error); |
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142 |
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143 list->v.deinit(list); |
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144 } |
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145 |
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146 const char *mailbox_list_get_driver_name(struct mailbox_list *list) |
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147 { |
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148 return list->name; |
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149 } |
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150 |
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151 char mailbox_list_get_hierarchy_sep(struct mailbox_list *list) |
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152 { |
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153 return list->hierarchy_sep; |
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154 } |
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155 |
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156 bool mailbox_list_is_valid_mask(struct mailbox_list *list, const char *mask) |
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157 { |
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158 return list->v.is_valid_mask(list, mask); |
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159 } |
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160 |
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161 bool mailbox_list_is_valid_existing_name(struct mailbox_list *list, |
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162 const char *name) |
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163 { |
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164 return list->v.is_valid_existing_name(list, name); |
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165 } |
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166 |
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167 bool mailbox_list_is_valid_create_name(struct mailbox_list *list, |
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168 const char *name) |
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169 { |
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170 return list->v.is_valid_create_name(list, name); |
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171 } |
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172 |
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173 const char *mailbox_list_get_path(struct mailbox_list *list, const char *name, |
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174 enum mailbox_list_path_type type) |
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175 { |
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176 return list->v.get_path(list, name, type); |
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177 } |
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178 |
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179 const char *mailbox_list_get_temp_prefix(struct mailbox_list *list) |
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180 { |
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181 return list->v.get_temp_prefix(list); |
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182 } |
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183 |
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184 const char *mailbox_list_join_refmask(struct mailbox_list *list, |
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185 const char *ref, const char *mask) |
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186 { |
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187 return list->v.join_refmask(list, ref, mask); |
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188 } |
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189 |
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190 int mailbox_list_get_mailbox_name_status(struct mailbox_list *list, |
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191 const char *name, |
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192 enum mailbox_name_status *status) |
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193 { |
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194 return list->v.get_mailbox_name_status(list, name, status); |
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195 } |
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196 |
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197 struct mailbox_list_iterate_context * |
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198 mailbox_list_iter_init(struct mailbox_list *list, const char *mask, |
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199 enum mailbox_list_iter_flags flags) |
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200 { |
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201 return list->v.iter_init(list, mask, flags); |
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202 } |
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203 |
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204 struct mailbox_info * |
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205 mailbox_list_iter_next(struct mailbox_list_iterate_context *ctx) |
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206 { |
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207 return ctx->list->v.iter_next(ctx); |
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208 } |
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209 |
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210 int mailbox_list_iter_deinit(struct mailbox_list_iterate_context **_ctx) |
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211 { |
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212 struct mailbox_list_iterate_context *ctx = *_ctx; |
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213 |
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214 *_ctx = NULL; |
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215 |
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216 return ctx->list->v.iter_deinit(ctx); |
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217 } |
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218 |
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219 int mailbox_list_set_subscribed(struct mailbox_list *list, |
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220 const char *name, bool set) |
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221 { |
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222 return list->v.set_subscribed(list, name, set); |
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223 } |
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224 |
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225 bool mailbox_list_name_is_too_large(const char *name, char sep) |
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226 { |
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227 unsigned int levels = 1, level_len = 0; |
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228 |
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229 for (; *name != '\0'; name++) { |
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230 if (*name == sep) { |
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231 if (level_len > MAILBOX_MAX_HIERARCHY_NAME_LENGTH) |
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232 return TRUE; |
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233 levels++; |
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234 level_len = 0; |
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235 } else { |
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236 level_len++; |
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237 } |
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238 } |
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239 |
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240 if (level_len > MAILBOX_MAX_HIERARCHY_NAME_LENGTH) |
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241 return TRUE; |
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242 if (levels > MAILBOX_MAX_HIERARCHY_LEVELS) |
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243 return TRUE; |
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244 return FALSE; |
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245 } |
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246 |
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247 enum mailbox_list_file_type mailbox_list_get_file_type(const struct dirent *d) |
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248 { |
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249 enum mailbox_list_file_type type; |
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250 |
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251 #ifdef HAVE_DIRENT_D_TYPE |
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252 switch (d->d_type) { |
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253 case DT_UNKNOWN: |
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254 type = MAILBOX_LIST_FILE_TYPE_UNKNOWN; |
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255 break; |
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256 case DT_REG: |
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257 type = MAILBOX_LIST_FILE_TYPE_FILE; |
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258 break; |
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259 case DT_DIR: |
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260 type = MAILBOX_LIST_FILE_TYPE_DIR; |
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261 break; |
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262 case DT_LNK: |
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263 type = MAILBOX_LIST_FILE_TYPE_SYMLINK; |
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264 break; |
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265 default: |
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266 type = MAILBOX_LIST_FILE_TYPE_OTHER; |
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267 break; |
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268 } |
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269 #else |
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270 type = MAILBOX_LIST_FILE_TYPE_UNKNOWN; |
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271 #endif |
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272 return type; |
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273 } |
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274 |
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275 const char *mailbox_list_get_last_error(struct mailbox_list *list, |
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276 bool *temporary_error_r) |
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277 { |
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278 *temporary_error_r = list->temporary_error; |
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279 |
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280 return list->error; |
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281 } |
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282 |
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283 void mailbox_list_clear_error(struct mailbox_list *list) |
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284 { |
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285 i_free_and_null(list->error); |
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286 |
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287 list->temporary_error = FALSE; |
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288 } |
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289 |
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290 void mailbox_list_set_error(struct mailbox_list *list, const char *error) |
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291 { |
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292 i_free(list->error); |
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293 list->error = i_strdup(error); |
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294 |
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295 list->temporary_error = FALSE; |
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296 } |
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297 |
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298 void mailbox_list_set_internal_error(struct mailbox_list *list) |
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299 { |
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300 struct tm *tm; |
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301 char str[256]; |
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302 |
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303 tm = localtime(&ioloop_time); |
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304 |
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305 i_free(list->error); |
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306 list->error = |
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307 strftime(str, sizeof(str), CRITICAL_MSG_STAMP, tm) > 0 ? |
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308 i_strdup(str) : i_strdup(CRITICAL_MSG); |
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309 list->temporary_error = TRUE; |
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310 } |
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311 |
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312 void mailbox_list_set_critical(struct mailbox_list *list, const char *fmt, ...) |
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313 { |
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314 va_list va; |
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315 |
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316 va_start(va, fmt); |
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317 i_error("%s", t_strdup_vprintf(fmt, va)); |
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318 va_end(va); |
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319 |
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320 /* critical errors may contain sensitive data, so let user |
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321 see only "Internal error" with a timestamp to make it |
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322 easier to look from log files the actual error message. */ |
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323 mailbox_list_set_internal_error(list); |
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324 } |