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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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44
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11 static ngx_atomic_uint_t ngx_temp_number;
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12 static ngx_atomic_uint_t ngx_random;
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0
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13
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14
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42
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15 ssize_t
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16 ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain)
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0
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17 {
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16
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18 ngx_int_t rc;
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0
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19
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20 if (tf->file.fd == NGX_INVALID_FILE) {
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21 rc = ngx_create_temp_file(&tf->file, tf->path, tf->pool,
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22 tf->persistent);
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23
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24 if (rc == NGX_ERROR || rc == NGX_AGAIN) {
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25 return rc;
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26 }
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27
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28 if (!tf->persistent && tf->warn) {
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29 ngx_log_error(NGX_LOG_WARN, tf->file.log, 0, tf->warn);
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30 }
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31 }
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32
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33 return ngx_write_chain_to_file(&tf->file, chain, tf->offset, tf->pool);
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34 }
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35
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36
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42
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37 ngx_int_t
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38 ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path, ngx_pool_t *pool,
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39 int persistent)
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0
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40 {
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44
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41 ngx_err_t err;
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42 ngx_atomic_uint_t n;
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0
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43
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42
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44 file->name.len = path->name.len + 1 + path->len + NGX_ATOMIC_T_LEN;
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0
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45
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50
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46 file->name.data = ngx_palloc(pool, file->name.len + 1);
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47 if (file->name.data == NULL) {
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16
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48 return NGX_ERROR;
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49 }
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0
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50
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51 #if 0
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52 for (i = 0; i < file->name.len; i++) {
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53 file->name.data[i] = 'X';
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54 }
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55 #endif
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56
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57 ngx_memcpy(file->name.data, path->name.data, path->name.len);
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58
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42
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59 n = ngx_next_temp_number(0);
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0
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60
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61 for ( ;; ) {
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10
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62 ngx_sprintf(file->name.data + path->name.len + 1 + path->len,
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42
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63 "%0muA%Z", n);
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0
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64
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65 ngx_create_hashed_filename(file, path);
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66
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67 #if 1
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68 file->fd = ngx_open_tempfile(file->name.data, persistent);
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69 #else
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70 file->fd = ngx_open_tempfile(file->name.data, 1);
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71 #endif
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72
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73 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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74 "temp fd:%d", file->fd);
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75
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76 if (file->fd != NGX_INVALID_FILE) {
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77 return NGX_OK;
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78 }
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79
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80 err = ngx_errno;
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81
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82 if (err == NGX_EEXIST) {
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42
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83 n = ngx_next_temp_number(1);
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0
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84 continue;
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85 }
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86
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87 if ((path->level[0] == 0)
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88 || (err != NGX_ENOENT
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10
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89 #if (NGX_WIN32)
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0
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90 && err != NGX_ENOTDIR
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91 #endif
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16
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92 ))
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93 {
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0
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94 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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95 ngx_open_tempfile_n " \"%s\" failed",
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96 file->name.data);
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97 return NGX_ERROR;
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98 }
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99
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100 if (ngx_create_path(file, path) == NGX_ERROR) {
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101 return NGX_ERROR;
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102 }
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103 }
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104 }
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105
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106
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42
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107 void
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108 ngx_create_hashed_filename(ngx_file_t *file, ngx_path_t *path)
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0
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109 {
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16
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110 ngx_uint_t i, name, pos, level;
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0
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111
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112 name = file->name.len;
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113 pos = path->name.len + 1;
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114
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115 file->name.data[path->name.len + path->len] = '/';
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116
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117 for (i = 0; i < 3; i++) {
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118 level = path->level[i];
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119
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120 if (level == 0) {
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121 break;
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122 }
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123
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124 name -= level;
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125 file->name.data[pos - 1] = '/';
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126 ngx_memcpy(&file->name.data[pos], &file->name.data[name], level);
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127 pos += level + 1;
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128 }
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129
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130 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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131 "hashed path: %s", file->name.data);
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132 }
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133
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134
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42
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135 ngx_int_t
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136 ngx_create_path(ngx_file_t *file, ngx_path_t *path)
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0
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137 {
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138 int i, pos;
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139 ngx_err_t err;
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140
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141 pos = path->name.len;
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142
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143 for (i = 0; i < 3; i++) {
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144 if (path->level[i] == 0) {
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145 break;
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146 }
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147
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148 pos += path->level[i] + 1;
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149
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150 file->name.data[pos] = '\0';
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151
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152 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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153 "temp file: \"%s\"", file->name.data);
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154
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155 if (ngx_create_dir(file->name.data) == NGX_FILE_ERROR) {
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156 err = ngx_errno;
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157 if (err != NGX_EEXIST) {
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158 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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159 ngx_create_dir_n " \"%s\" failed",
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160 file->name.data);
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161 return NGX_ERROR;
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162 }
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163 }
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164
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165 file->name.data[pos] = '/';
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166 }
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167
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168 return NGX_OK;
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169 }
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170
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171
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42
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172 void
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48
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173 ngx_init_temp_number(void)
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0
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174 {
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42
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175 ngx_temp_number = 0;
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176 ngx_random = 123456;
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0
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177 }
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178
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179
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44
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180 ngx_atomic_uint_t
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42
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181 ngx_next_temp_number(ngx_uint_t collision)
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0
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182 {
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183 if (collision) {
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184 ngx_temp_number += ngx_random;
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185 }
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186
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187 return ngx_temp_number++;
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188 }
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189
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190
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42
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191 char *
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192 ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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0
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193 {
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194 char *p = conf;
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195
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16
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196 ssize_t level;
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0
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197 ngx_uint_t i, n;
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198 ngx_str_t *value;
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28
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199 ngx_path_t *path, **slot;
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0
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200
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16
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201 slot = (ngx_path_t **) (p + cmd->offset);
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0
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202
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16
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203 if (*slot) {
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0
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204 return "is duplicate";
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205 }
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206
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50
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207 path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
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208 if (path == NULL) {
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16
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209 return NGX_CONF_ERROR;
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210 }
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0
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211
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16
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212 value = cf->args->elts;
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0
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213
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214 path->name = value[1];
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215 path->len = 0;
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28
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216 path->cleaner = (ngx_gc_handler_pt) cmd->post;
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16
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217 path->conf_file = cf->conf_file->file.name.data;
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218 path->line = cf->conf_file->line;
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0
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219
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220 for (i = 0, n = 2; n < cf->args->nelts; i++, n++) {
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221 level = ngx_atoi(value[n].data, value[n].len);
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222 if (level == NGX_ERROR || level == 0) {
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223 return "invalid value";
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224 }
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225
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226 path->level[i] = level;
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227 path->len += level + 1;
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228 }
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229
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230 while (i < 3) {
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231 path->level[i++] = 0;
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232 }
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233
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28
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234 *slot = path;
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16
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235
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28
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236 if (ngx_add_path(cf, slot) == NGX_ERROR) {
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237 return NGX_CONF_ERROR;
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238 }
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239
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240 return NGX_CONF_OK;
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241 }
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242
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243
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42
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244 ngx_int_t
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245 ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot)
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28
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246 {
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247 ngx_uint_t i, n;
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248 ngx_path_t *path, **p;
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249
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250 path = *slot;
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251
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252 p = cf->cycle->pathes.elts;
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16
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253 for (i = 0; i < cf->cycle->pathes.nelts; i++) {
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28
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254 if (p[i]->name.len == path->name.len
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255 && ngx_strcmp(p[i]->name.data, path->name.data) == 0)
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16
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256 {
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257 for (n = 0; n < 3; n++) {
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28
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258 if (p[i]->level[n] != path->level[n]) {
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259 if (path->conf_file == NULL) {
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30
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260 if (p[i]->conf_file == NULL) {
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261 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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262 "the default path name \"%V\" has "
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263 "the same name as another default path, "
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264 "but the different levels, you need to "
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265 "redefine one of them in http section",
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266 &p[i]->name);
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267 return NGX_ERROR;
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268 }
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269
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28
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270 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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271 "the path name \"%V\" in %s:%ui has "
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30
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272 "the same name as default path, but "
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28
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273 "the different levels, you need to "
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274 "define default path in http section",
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275 &p[i]->name, p[i]->conf_file, p[i]->line);
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276 return NGX_ERROR;
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277 }
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278
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16
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279 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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28
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280 "the same path name \"%V\" in %s:%ui "
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281 "has the different levels than",
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282 &p[i]->name, p[i]->conf_file, p[i]->line);
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283 return NGX_ERROR;
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16
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284 }
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285
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28
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286 if (p[i]->level[n] == 0) {
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16
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287 break;
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288 }
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289 }
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290
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28
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291 *slot = p[i];
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16
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292
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28
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293 return NGX_OK;
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16
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294 }
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295 }
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296
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50
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297 p = ngx_array_push(&cf->cycle->pathes);
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298 if (p == NULL) {
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28
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299 return NGX_ERROR;
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16
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300 }
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301
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28
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302 *p = path;
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0
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303
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28
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304 return NGX_OK;
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0
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305 }
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16
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306
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307
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42
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308 ngx_int_t
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309 ngx_create_pathes(ngx_cycle_t *cycle, ngx_uid_t user)
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16
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310 {
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311 ngx_err_t err;
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312 ngx_uint_t i;
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313 ngx_path_t **path;
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314 #if !(NGX_WIN32)
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315 ngx_file_info_t fi;
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316 #endif
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317
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318 path = cycle->pathes.elts;
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319 for (i = 0; i < cycle->pathes.nelts; i++) {
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320
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321 if (ngx_create_dir(path[i]->name.data) == NGX_FILE_ERROR) {
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322 err = ngx_errno;
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323 if (err != NGX_EEXIST) {
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324 ngx_log_error(NGX_LOG_EMERG, cycle->log, err,
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325 ngx_create_dir_n " \"%s\" failed",
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326 path[i]->name.data);
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327 return NGX_ERROR;
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328 }
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329 }
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330
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331 if (user == (ngx_uid_t) -1) {
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332 continue;
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333 }
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334
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335 #if !(NGX_WIN32)
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336
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337 if (ngx_file_info((const char *) path[i]->name.data, &fi) == -1) {
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338 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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339 ngx_file_info_n " \"%s\" failed", path[i]->name.data);
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340 return NGX_ERROR;
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341 }
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342
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343 if (fi.st_uid != user) {
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344 if (chown((const char *) path[i]->name.data, user, -1) == -1) {
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345 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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346 "chown(\"%s\", %d) failed",
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347 path[i]->name.data, user);
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348 return NGX_ERROR;
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349 }
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350 }
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351
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352 if ((fi.st_mode & (S_IRUSR|S_IWUSR|S_IXUSR))
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353 != (S_IRUSR|S_IWUSR|S_IXUSR))
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354 {
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355 fi.st_mode |= (S_IRUSR|S_IWUSR|S_IXUSR);
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356
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357 if (chmod((const char *) path[i]->name.data, fi.st_mode) == -1) {
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358 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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359 "chmod() \"%s\" failed", path[i]->name.data);
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360 return NGX_ERROR;
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361 }
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362 }
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363
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364 #endif
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365 }
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366
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367 return NGX_OK;
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368 }
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