Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib-storage/mailbox-list.c @ 5318:3a3906587641 HEAD

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Create index/control dirs if they don't exist
author Timo Sirainen <tss@iki.fi>
date Thu, 15 Mar 2007 03:47:10 +0200
parents 0c3c948412c5
children beabd433cdae
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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 "mkdir-parents.h"
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7 #include "mailbox-list-private.h"
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8
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9 #include <time.h>
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10 #include <dirent.h>
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11
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12 /* 20 * (200+1) < 4096 which is the standard PATH_MAX. Having these settings
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13 prevents malicious user from creating eg. "a/a/a/.../a" mailbox name and
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14 then start renaming them to larger names from end to beginning, which
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15 eventually would start causing the failures when trying to use too
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16 long mailbox names. */
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17 #define MAILBOX_MAX_HIERARCHY_LEVELS 20
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18 #define MAILBOX_MAX_HIERARCHY_NAME_LENGTH 200
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19
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20 /* Message to show to users when critical error occurs */
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21 #define CRITICAL_MSG \
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22 "Internal error occurred. Refer to server log for more information."
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23 #define CRITICAL_MSG_STAMP CRITICAL_MSG " [%Y-%m-%d %H:%M:%S]"
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24
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25 unsigned int mailbox_list_module_id = 0;
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26
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27 void (*hook_mailbox_list_created)(struct mailbox_list *list);
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28
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29 static ARRAY_DEFINE(mailbox_list_drivers, const struct mailbox_list *);
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30
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31 static bool mailbox_list_driver_find(const char *name, unsigned int *idx_r)
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32 {
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33 const struct mailbox_list *const *drivers;
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34 unsigned int i, count;
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35
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36 drivers = array_get(&mailbox_list_drivers, &count);
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37 for (i = 0; i < count; i++) {
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38 if (strcasecmp(drivers[i]->name, name) == 0) {
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39 *idx_r = i;
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40 return TRUE;
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41 }
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42 }
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43 return FALSE;
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44 }
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45
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46 void mailbox_list_register(const struct mailbox_list *list)
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47 {
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48 if (!array_is_created(&mailbox_list_drivers))
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49 i_array_init(&mailbox_list_drivers, 4);
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50 else {
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51 unsigned int idx;
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52
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53 if (mailbox_list_driver_find(list->name, &idx)) {
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54 i_fatal("mailbox_list_register(%s): duplicate driver",
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55 list->name);
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56 }
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57 }
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58
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59 array_append(&mailbox_list_drivers, &list, 1);
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60 }
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61
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62 void mailbox_list_unregister(const struct mailbox_list *list)
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63 {
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64 unsigned int idx;
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65
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66 if (!mailbox_list_driver_find(list->name, &idx)) {
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67 i_fatal("mailbox_list_unregister(%s): unknown driver",
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68 list->name);
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69 }
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70 array_delete(&mailbox_list_drivers, idx, 1);
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71
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72 if (array_count(&mailbox_list_drivers) == 0)
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73 array_free(&mailbox_list_drivers);
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74 }
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75
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76 int mailbox_list_init(const char *driver,
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77 const struct mailbox_list_settings *set,
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78 enum mailbox_list_flags flags,
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79 mailbox_list_is_mailbox_t *callback, void *context,
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80 struct mailbox_list **list_r, const char **error_r)
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81 {
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82 const struct mailbox_list *const *class_p;
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83 struct mailbox_list *list;
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84 unsigned int idx;
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85
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86 if (!mailbox_list_driver_find(driver, &idx)) {
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87 *error_r = "Unknown mailbox list driver";
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88 return -1;
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89 }
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90
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91 i_assert(*set->root_dir != '\0');
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92 i_assert(*set->subscription_fname != '\0');
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93
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94 class_p = array_idx(&mailbox_list_drivers, idx);
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95 list = (*class_p)->v.alloc();
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96
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97 list->flags = flags;
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98 list->callback = callback;
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99 list->context = context;
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100
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101 /* copy settings */
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102 list->set.root_dir = p_strdup(list->pool, set->root_dir);
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103 list->set.index_dir = set->index_dir == NULL ||
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104 strcmp(set->index_dir, set->root_dir) == 0 ? NULL :
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105 p_strdup(list->pool, set->index_dir);
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106 list->set.control_dir = set->control_dir == NULL ||
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107 strcmp(set->control_dir, set->root_dir) == 0 ? NULL :
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108 p_strdup(list->pool, set->control_dir);
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109
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110 if (list->set.index_dir != NULL) {
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111 if (mkdir_parents(list->set.index_dir, 0700) < 0 &&
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112 errno != EEXIST)
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113 i_error("mkdir(%s) failed: %m", list->set.index_dir);
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114 }
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115 if (list->set.control_dir != NULL) {
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116 if (mkdir_parents(list->set.control_dir, 0700) < 0 &&
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117 errno != EEXIST)
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118 i_error("mkdir(%s) failed: %m", list->set.control_dir);
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119 }
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120
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121 list->set.inbox_path = p_strdup(list->pool, set->inbox_path);
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122 list->set.subscription_fname =
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123 p_strdup(list->pool, set->subscription_fname);
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124 list->set.maildir_name = p_strdup(list->pool, set->maildir_name);
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125
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126 list->set.mail_storage_flags = set->mail_storage_flags;
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127 list->set.lock_method = set->lock_method;
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128
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129 if ((flags & MAILBOX_LIST_FLAG_DEBUG) != 0) {
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130 i_info("%s: root=%s, index=%s, control=%s, inbox=%s",
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131 driver, list->set.root_dir,
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132 list->set.index_dir == NULL ? "" : list->set.index_dir,
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133 list->set.control_dir == NULL ?
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134 "" : list->set.control_dir,
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135 list->set.inbox_path == NULL ?
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136 "" : list->set.inbox_path);
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137 }
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138
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139 array_create(&list->module_contexts, list->pool, sizeof(void *), 5);
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140
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141 if (hook_mailbox_list_created != NULL)
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142 hook_mailbox_list_created(list);
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143
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144 list->set.mail_storage_flags = NULL;
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145 list->set.lock_method = NULL;
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146
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147 *list_r = list;
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148 return 0;
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149 }
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150
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151 void mailbox_list_deinit(struct mailbox_list *list)
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152 {
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153 i_free_and_null(list->error);
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154
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155 list->v.deinit(list);
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156 }
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157
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158 const char *mailbox_list_get_driver_name(struct mailbox_list *list)
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159 {
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160 return list->name;
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161 }
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162
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163 char mailbox_list_get_hierarchy_sep(struct mailbox_list *list)
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164 {
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165 return list->hierarchy_sep;
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166 }
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167
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168 bool mailbox_list_is_valid_mask(struct mailbox_list *list, const char *mask)
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169 {
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170 return list->v.is_valid_mask(list, mask);
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171 }
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172
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173 bool mailbox_list_is_valid_existing_name(struct mailbox_list *list,
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174 const char *name)
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175 {
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176 return list->v.is_valid_existing_name(list, name);
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177 }
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178
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179 bool mailbox_list_is_valid_create_name(struct mailbox_list *list,
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180 const char *name)
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181 {
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182 return list->v.is_valid_create_name(list, name);
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183 }
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184
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185 const char *mailbox_list_get_path(struct mailbox_list *list, const char *name,
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186 enum mailbox_list_path_type type)
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187 {
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188 return list->v.get_path(list, name, type);
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189 }
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190
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191 const char *mailbox_list_get_temp_prefix(struct mailbox_list *list)
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192 {
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193 return list->v.get_temp_prefix(list);
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194 }
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195
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196 const char *mailbox_list_join_refmask(struct mailbox_list *list,
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197 const char *ref, const char *mask)
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198 {
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199 return list->v.join_refmask(list, ref, mask);
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200 }
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201
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202 int mailbox_list_get_mailbox_name_status(struct mailbox_list *list,
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203 const char *name,
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204 enum mailbox_name_status *status)
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205 {
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206 return list->v.get_mailbox_name_status(list, name, status);
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207 }
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208
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209 struct mailbox_list_iterate_context *
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210 mailbox_list_iter_init(struct mailbox_list *list, const char *mask,
4808
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211 enum mailbox_list_iter_flags flags)
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212 {
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213 return list->v.iter_init(list, mask, flags);
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214 }
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215
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216 struct mailbox_info *
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217 mailbox_list_iter_next(struct mailbox_list_iterate_context *ctx)
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218 {
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219 return ctx->list->v.iter_next(ctx);
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220 }
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221
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222 int mailbox_list_iter_deinit(struct mailbox_list_iterate_context **_ctx)
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223 {
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224 struct mailbox_list_iterate_context *ctx = *_ctx;
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225
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226 *_ctx = NULL;
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227
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228 return ctx->list->v.iter_deinit(ctx);
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229 }
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230
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231 int mailbox_list_set_subscribed(struct mailbox_list *list,
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232 const char *name, bool set)
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233 {
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234 return list->v.set_subscribed(list, name, set);
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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235 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
236
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237 bool mailbox_list_name_is_too_large(const char *name, char sep)
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238 {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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239 unsigned int levels = 1, level_len = 0;
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240
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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241 for (; *name != '\0'; name++) {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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242 if (*name == sep) {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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243 if (level_len > MAILBOX_MAX_HIERARCHY_NAME_LENGTH)
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244 return TRUE;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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245 levels++;
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246 level_len = 0;
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247 } else {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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248 level_len++;
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249 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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250 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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251
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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252 if (level_len > MAILBOX_MAX_HIERARCHY_NAME_LENGTH)
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253 return TRUE;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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254 if (levels > MAILBOX_MAX_HIERARCHY_LEVELS)
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255 return TRUE;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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256 return FALSE;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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257 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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258
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diff changeset
259 enum mailbox_list_file_type mailbox_list_get_file_type(const struct dirent *d)
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260 {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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261 enum mailbox_list_file_type type;
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262
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diff changeset
263 #ifdef HAVE_DIRENT_D_TYPE
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diff changeset
264 switch (d->d_type) {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
265 case DT_UNKNOWN:
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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266 type = MAILBOX_LIST_FILE_TYPE_UNKNOWN;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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267 break;
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268 case DT_REG:
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269 type = MAILBOX_LIST_FILE_TYPE_FILE;
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270 break;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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271 case DT_DIR:
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272 type = MAILBOX_LIST_FILE_TYPE_DIR;
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273 break;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
274 case DT_LNK:
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275 type = MAILBOX_LIST_FILE_TYPE_SYMLINK;
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276 break;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
277 default:
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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278 type = MAILBOX_LIST_FILE_TYPE_OTHER;
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279 break;
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280 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
281 #else
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282 type = MAILBOX_LIST_FILE_TYPE_UNKNOWN;
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diff changeset
283 #endif
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284 return type;
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285 }
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diff changeset
286
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287 const char *mailbox_list_get_last_error(struct mailbox_list *list,
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
288 bool *temporary_error_r)
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
289 {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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290 *temporary_error_r = list->temporary_error;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
291
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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292 return list->error;
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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293 }
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
294
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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295 void mailbox_list_clear_error(struct mailbox_list *list)
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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diff changeset
296 {
93bc9770f938 Initial code for separation of mailbox accessing and directory layout
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297 i_free_and_null(list->error);
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298
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299 list->temporary_error = FALSE;
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300 }
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301
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302 void mailbox_list_set_error(struct mailbox_list *list, const char *error)
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303 {
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304 i_free(list->error);
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305 list->error = i_strdup(error);
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306
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307 list->temporary_error = FALSE;
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308 }
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309
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310 void mailbox_list_set_internal_error(struct mailbox_list *list)
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311 {
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312 struct tm *tm;
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313 char str[256];
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314
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315 tm = localtime(&ioloop_time);
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316
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317 i_free(list->error);
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318 list->error =
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319 strftime(str, sizeof(str), CRITICAL_MSG_STAMP, tm) > 0 ?
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320 i_strdup(str) : i_strdup(CRITICAL_MSG);
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321 list->temporary_error = TRUE;
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322 }
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323
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324 void mailbox_list_set_critical(struct mailbox_list *list, const char *fmt, ...)
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325 {
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326 va_list va;
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327
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328 va_start(va, fmt);
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329 i_error("%s", t_strdup_vprintf(fmt, va));
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330 va_end(va);
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331
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332 /* critical errors may contain sensitive data, so let user
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333 see only "Internal error" with a timestamp to make it
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334 easier to look from log files the actual error message. */
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335 mailbox_list_set_internal_error(list);
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336 }