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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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11 static ngx_uint_t ngx_temp_number;
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12 static ngx_uint_t ngx_random;
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13
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14
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15 int ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain)
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16 {
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17 int rc;
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18
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19 if (tf->file.fd == NGX_INVALID_FILE) {
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20 rc = ngx_create_temp_file(&tf->file, tf->path, tf->pool,
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21 tf->persistent);
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22
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23 if (rc == NGX_ERROR || rc == NGX_AGAIN) {
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24 return rc;
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25 }
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26
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27 if (!tf->persistent && tf->warn) {
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28 ngx_log_error(NGX_LOG_WARN, tf->file.log, 0, tf->warn);
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29 }
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30 }
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31
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32 return ngx_write_chain_to_file(&tf->file, chain, tf->offset, tf->pool);
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33 }
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34
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35
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36 int ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path,
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37 ngx_pool_t *pool, int persistent)
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38 {
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39 int num;
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40 ngx_err_t err;
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41
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42 file->name.len = path->name.len + 1 + path->len + 10;
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43
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44 ngx_test_null(file->name.data, ngx_palloc(pool, file->name.len + 1),
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45 NGX_ERROR);
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46
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47 #if 0
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48 for (i = 0; i < file->name.len; i++) {
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49 file->name.data[i] = 'X';
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50 }
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51 #endif
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52
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53 ngx_memcpy(file->name.data, path->name.data, path->name.len);
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54
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55 num = ngx_next_temp_number(0);
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56
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57 for ( ;; ) {
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10
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58 ngx_sprintf(file->name.data + path->name.len + 1 + path->len,
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59 "%010ud%Z", num);
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0
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60
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61 ngx_create_hashed_filename(file, path);
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62
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63 #if 1
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64 file->fd = ngx_open_tempfile(file->name.data, persistent);
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65 #else
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66 file->fd = ngx_open_tempfile(file->name.data, 1);
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67 #endif
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68
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69 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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70 "temp fd:%d", file->fd);
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71
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72 if (file->fd != NGX_INVALID_FILE) {
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73 return NGX_OK;
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74 }
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75
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76 err = ngx_errno;
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77
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78 if (err == NGX_EEXIST) {
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79 num = ngx_next_temp_number(1);
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80 continue;
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81 }
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82
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83 if ((path->level[0] == 0)
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84 || (err != NGX_ENOENT
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10
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85 #if (NGX_WIN32)
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0
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86 && err != NGX_ENOTDIR
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87 #endif
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88 )) {
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89 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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90 ngx_open_tempfile_n " \"%s\" failed",
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91 file->name.data);
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92 return NGX_ERROR;
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93 }
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94
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95 if (ngx_create_path(file, path) == NGX_ERROR) {
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96 return NGX_ERROR;
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97 }
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98 }
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99 }
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100
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101
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102 void ngx_create_hashed_filename(ngx_file_t *file, ngx_path_t *path)
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103 {
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104 int i, name, pos;
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105 size_t level;
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106
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107 name = file->name.len;
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108 pos = path->name.len + 1;
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109
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110 file->name.data[path->name.len + path->len] = '/';
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111
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112 for (i = 0; i < 3; i++) {
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113 level = path->level[i];
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114
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115 if (level == 0) {
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116 break;
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117 }
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118
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119 name -= level;
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120 file->name.data[pos - 1] = '/';
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121 ngx_memcpy(&file->name.data[pos], &file->name.data[name], level);
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122 pos += level + 1;
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123 }
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124
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125 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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126 "hashed path: %s", file->name.data);
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127 }
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128
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129
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130 int ngx_create_path(ngx_file_t *file, ngx_path_t *path)
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131 {
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132 int i, pos;
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133 ngx_err_t err;
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134
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135 pos = path->name.len;
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136
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137 for (i = 0; i < 3; i++) {
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138 if (path->level[i] == 0) {
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139 break;
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140 }
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141
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142 pos += path->level[i] + 1;
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143
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144 file->name.data[pos] = '\0';
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145
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146 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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147 "temp file: \"%s\"", file->name.data);
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148
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149 if (ngx_create_dir(file->name.data) == NGX_FILE_ERROR) {
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150 err = ngx_errno;
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151 if (err != NGX_EEXIST) {
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152 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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153 ngx_create_dir_n " \"%s\" failed",
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154 file->name.data);
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155 return NGX_ERROR;
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156 }
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157 }
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158
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159 file->name.data[pos] = '/';
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160 }
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161
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162 return NGX_OK;
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163 }
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164
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165
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166 void ngx_init_temp_number()
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167 {
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168 ngx_random = 0;
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169
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170 ngx_temp_number = ngx_random;
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171
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172 while (ngx_random < 10000) {
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173 ngx_random = 123456;
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174 }
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175 }
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176
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177
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178 ngx_uint_t ngx_next_temp_number(ngx_uint_t collision)
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179 {
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180 if (collision) {
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181 ngx_temp_number += ngx_random;
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182 }
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183
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184 return ngx_temp_number++;
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185 }
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186
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187
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188 char *ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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189 {
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190 char *p = conf;
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191
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192 ngx_int_t level;
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193 ngx_uint_t i, n;
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194 ngx_str_t *value;
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195 ngx_path_t *path, **pp;
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196
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197 pp = (ngx_path_t **) (p + cmd->offset);
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198
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199 if (*pp) {
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200 return "is duplicate";
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201 }
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202
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203 /* TODO: check duplicate in cf->cycle->pathes */
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204
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205 ngx_test_null(path, ngx_pcalloc(cf->pool, sizeof(ngx_path_t)),
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206 NGX_CONF_ERROR);
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207
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208 *pp = path;
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209
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210 ngx_test_null(pp, ngx_push_array(&cf->cycle->pathes), NGX_CONF_ERROR);
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211 *pp = path;
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212
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213 value = (ngx_str_t *) cf->args->elts;
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214
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215 path->name = value[1];
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216
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217 path->len = 0;
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218
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219 for (i = 0, n = 2; n < cf->args->nelts; i++, n++) {
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220 level = ngx_atoi(value[n].data, value[n].len);
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221 if (level == NGX_ERROR || level == 0) {
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222 return "invalid value";
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223 }
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224
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225 path->level[i] = level;
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226 path->len += level + 1;
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227 }
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228
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229 while (i < 3) {
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230 path->level[i++] = 0;
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231 }
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232
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233 path->gc_handler = (ngx_gc_handler_pt) cmd->post;
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234
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235 return NGX_CONF_OK;
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236 }
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