Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/lib-dict/dict-sql-settings.c @ 8590:b9faf4db2a9f HEAD

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Updated copyright notices to include year 2009.
author Timo Sirainen <tss@iki.fi>
date Tue, 06 Jan 2009 09:25:38 -0500
parents f643f8c0e29d
children 4142c933e231
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8590
b9faf4db2a9f Updated copyright notices to include year 2009.
Timo Sirainen <tss@iki.fi>
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1 /* Copyright (c) 2008-2009 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 "str.h"
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6 #include "settings.h"
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7 #include "dict-sql-settings.h"
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8
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9 #include <ctype.h>
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10
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11 enum section_type {
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12 SECTION_ROOT = 0,
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13 SECTION_MAP,
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14 SECTION_FIELDS
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15 };
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16
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17 struct dict_sql_map_field {
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18 const char *sql_field, *variable;
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19 };
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20
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21 struct setting_parser_ctx {
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22 pool_t pool;
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23 struct dict_sql_settings *set;
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24 enum section_type type;
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25
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26 struct dict_sql_map cur_map;
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27 ARRAY_DEFINE(cur_fields, struct dict_sql_map_field);
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28 };
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29
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30 #define DEF_STR(name) DEF_STRUCT_STR(name, dict_sql_map)
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31
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32 static struct setting_def dict_sql_map_setting_defs[] = {
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33 DEF_STR(pattern),
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34 DEF_STR(table),
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35 DEF_STR(username_field),
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36 DEF_STR(value_field),
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37
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38 { 0, NULL, 0 }
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39 };
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40
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41 static const char *pattern_read_name(const char **pattern)
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42 {
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43 const char *p = *pattern, *name;
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44
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45 if (*p == '{') {
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46 /* ${name} */
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47 name = ++p;
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48 p = strchr(p, '}');
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49 if (p == NULL) {
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50 /* error, but allow anyway */
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51 *pattern += strlen(*pattern);
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52 return "";
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53 }
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54 *pattern = p + 1;
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55 } else {
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56 /* $name - ends at the first non-alnum_ character */
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57 name = p;
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58 for (; *p != '\0'; p++) {
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59 if (!i_isalnum(*p) && *p != '_')
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60 break;
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61 }
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62 *pattern = p;
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63 }
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64 name = t_strdup_until(name, p);
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65 return name;
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66 }
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67
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68 static const char *dict_sql_fields_map(struct setting_parser_ctx *ctx)
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69 {
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70 struct dict_sql_map_field *fields;
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71 string_t *pattern;
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72 const char *p, *name;
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73 unsigned int i, count;
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74
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75 /* go through the variables in the pattern, replace them with plain
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76 '$' character and add its sql field */
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77 pattern = t_str_new(strlen(ctx->cur_map.pattern) + 1);
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78 fields = array_get_modifiable(&ctx->cur_fields, &count);
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79
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80 p_array_init(&ctx->cur_map.sql_fields, ctx->pool, count);
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81 for (p = ctx->cur_map.pattern; *p != '\0';) {
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82 if (*p != '$') {
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83 str_append_c(pattern, *p);
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84 p++;
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85 continue;
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86 }
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87 p++;
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88 str_append_c(pattern, '$');
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89
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90 name = pattern_read_name(&p);
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91 for (i = 0; i < count; i++) {
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92 if (fields[i].variable != NULL &&
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93 strcmp(fields[i].variable, name) == 0)
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94 break;
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95 }
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96 if (i == count) {
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97 return t_strconcat("Missing SQL field for variable: ",
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98 name, NULL);
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99 }
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100
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101 /* mark this field as used */
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102 fields[i].variable = NULL;
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103 array_append(&ctx->cur_map.sql_fields,
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104 &fields[i].sql_field, 1);
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105 }
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106
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107 /* make sure there aren't any unused fields */
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108 for (i = 0; i < count; i++) {
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109 if (fields[i].variable != NULL) {
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110 return t_strconcat("Unused variable: ",
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111 fields[i].variable, NULL);
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112 }
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113 }
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114
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115 if (ctx->set->max_field_count < count)
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116 ctx->set->max_field_count = count;
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117 ctx->cur_map.pattern = p_strdup(ctx->pool, str_c(pattern));
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118 return NULL;
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119 }
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120
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121 static const char *dict_sql_map_finish(struct setting_parser_ctx *ctx)
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122 {
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123 if (!array_is_created(&ctx->cur_map.sql_fields)) {
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124 /* no fields besides value. allocate the array anyway. */
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125 p_array_init(&ctx->cur_map.sql_fields, ctx->pool, 1);
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126 if (strchr(ctx->cur_map.pattern, '$') != NULL)
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127 return "Missing fields for pattern variables";
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128 }
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129 array_append(&ctx->set->maps, &ctx->cur_map, 1);
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130 memset(&ctx->cur_map, 0, sizeof(ctx->cur_map));
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131 return NULL;
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132 }
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133
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134 static const char *
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135 parse_setting(const char *key, const char *value,
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136 struct setting_parser_ctx *ctx)
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137 {
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138 struct dict_sql_map_field *field;
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139
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140 switch (ctx->type) {
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141 case SECTION_ROOT:
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142 if (strcmp(key, "connect") == 0) {
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143 ctx->set->connect = p_strdup(ctx->pool, value);
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144 return NULL;
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145 }
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146 break;
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147 case SECTION_MAP:
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148 return parse_setting_from_defs(ctx->pool,
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149 dict_sql_map_setting_defs,
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150 &ctx->cur_map, key, value);
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151 case SECTION_FIELDS:
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152 if (*value != '$') {
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153 return t_strconcat("Value is missing '$' for field: ",
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154 key, NULL);
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155 }
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156 field = array_append_space(&ctx->cur_fields);
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157 field->sql_field = p_strdup(ctx->pool, key);
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158 field->variable = p_strdup(ctx->pool, value + 1);
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159 return NULL;
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160 }
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161 return t_strconcat("Unknown setting: ", key, NULL);
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162 }
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163
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164 static bool
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165 parse_section(const char *type, const char *name ATTR_UNUSED,
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166 struct setting_parser_ctx *ctx, const char **error_r)
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167 {
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168 switch (ctx->type) {
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169 case SECTION_ROOT:
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170 if (type == NULL)
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171 return FALSE;
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172 if (strcmp(type, "map") == 0) {
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173 array_clear(&ctx->cur_fields);
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174 ctx->type = SECTION_MAP;
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175 return TRUE;
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176 }
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177 break;
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178 case SECTION_MAP:
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179 if (type == NULL) {
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180 ctx->type = SECTION_ROOT;
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181 *error_r = dict_sql_map_finish(ctx);
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182 return FALSE;
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183 }
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184 if (strcmp(type, "fields") == 0) {
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185 ctx->type = SECTION_FIELDS;
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186 return TRUE;
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187 }
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188 break;
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189 case SECTION_FIELDS:
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190 if (type == NULL) {
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191 ctx->type = SECTION_MAP;
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192 *error_r = dict_sql_fields_map(ctx);
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193 return FALSE;
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194 }
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195 break;
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196 }
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197 *error_r = t_strconcat("Unknown section: ", type, NULL);
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198 return FALSE;
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199 }
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200
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201 struct dict_sql_settings *dict_sql_settings_read(pool_t pool, const char *path)
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202 {
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203 struct setting_parser_ctx ctx;
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204
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205 memset(&ctx, 0, sizeof(ctx));
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206 ctx.pool = pool;
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207 ctx.set = p_new(pool, struct dict_sql_settings, 1);
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208 t_array_init(&ctx.cur_fields, 16);
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209 p_array_init(&ctx.set->maps, pool, 8);
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210
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211 if (!settings_read(path, NULL, parse_setting, parse_section, &ctx))
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212 return NULL;
2d3e942a4cde dict sql: Added configuration for mapping dict paths to SQL fields.
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213
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214 return ctx.set;
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215 }