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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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112
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11 ssize_t
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12 ngx_parse_size(ngx_str_t *line)
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0
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13 {
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14 u_char last;
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15 size_t len;
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112
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16 ssize_t size;
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17 ngx_int_t scale;
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0
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18
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19 len = line->len;
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20 last = line->data[len - 1];
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21
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22 switch (last) {
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23 case 'K':
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24 case 'k':
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25 len--;
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26 scale = 1024;
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27 break;
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28
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29 case 'M':
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30 case 'm':
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31 len--;
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32 scale = 1024 * 1024;
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33 break;
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34
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35 default:
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36 scale = 1;
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37 }
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38
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112
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39 size = ngx_atosz(line->data, len);
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0
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40 if (size == NGX_ERROR) {
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41 return NGX_ERROR;
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42 }
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43
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44 size *= scale;
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45
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46 return size;
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47 }
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48
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49
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112
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50 ngx_int_t
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51 ngx_parse_time(ngx_str_t *line, ngx_int_t sec)
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0
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52 {
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53 size_t len;
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54 u_char *start, last;
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55 ngx_int_t value, total, scale;
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56 ngx_uint_t max, i;
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57 enum {
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58 st_start = 0,
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59 st_year,
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60 st_month,
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61 st_week,
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62 st_day,
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63 st_hour,
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64 st_min,
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65 st_sec,
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66 st_msec,
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67 st_last
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68 } step;
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69
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70
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71 start = line->data;
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72 len = 0;
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73 total = 0;
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74 step = sec ? st_start : st_month;
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75
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76 for (i = 0; /* void */ ; i++) {
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77
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78 if (i < line->len) {
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79 if (line->data[i] != ' ') {
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80 len++;
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81 continue;
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82 }
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83
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84 if (line->data[i] == ' ' && len == 0) {
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85 start = &line->data[i + 1];
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86 continue;
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87 }
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88 }
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89
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90 if (len == 0) {
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91 break;
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92 }
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93
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94 last = line->data[i - 1];
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95
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96 switch (last) {
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97 case 'y':
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98 if (step > st_start) {
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99 return NGX_ERROR;
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100 }
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101 step = st_year;
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102 len--;
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103 max = 68;
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104 scale = 60 * 60 * 24 * 365;
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105 break;
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106
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107 case 'M':
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108 if (step > st_year) {
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109 return NGX_ERROR;
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110 }
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111 step = st_month;
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112 len--;
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113 max = 828;
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114 scale = 60 * 60 * 24 * 30;
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115 break;
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116
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117 case 'w':
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118 if (step > st_month) {
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119 return NGX_ERROR;
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120 }
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121 step = st_week;
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122 len--;
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123 max = 3550;
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124 scale = 60 * 60 * 24 * 7;
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125 break;
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126
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127 case 'd':
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128 if (step > st_week) {
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129 return NGX_ERROR;
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130 }
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131 step = st_day;
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132 len--;
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133 max = 24855;
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134 scale = 60 * 60 * 24;
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135 break;
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136
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137 case 'h':
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138 if (step > st_day) {
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139 return NGX_ERROR;
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140 }
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141 step = st_hour;
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142 len--;
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143 max = 596523;
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144 scale = 60 * 60;
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145 break;
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146
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147 case 'm':
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148 if (step > st_hour) {
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149 return NGX_ERROR;
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150 }
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151 step = st_min;
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152 len--;
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153 max = 35791394;
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154 scale = 60;
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155 break;
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156
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157 case 's':
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158 len--;
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159
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160 if (line->data[i - 2] == 'm') {
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161 if (sec || step > st_sec) {
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162 return NGX_ERROR;
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163 }
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164 step = st_msec;
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165 len--;
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166 max = 2147483647;
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167 scale = 1;
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168 break;
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169 }
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170
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171 if (step > st_min) {
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172 return NGX_ERROR;
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173 }
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174
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175 step = st_sec;
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176 max = 2147483647;
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177 scale = 1;
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178 break;
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179
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180 default:
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181 step = st_last;
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182 max = 2147483647;
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183 scale = 1;
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184 }
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185
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186 value = ngx_atoi(start, len);
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187 if (value == NGX_ERROR) {
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188 return NGX_ERROR;
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189 }
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190
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191 if (step != st_msec && !sec) {
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192 scale *= 1000;
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193 max /= 1000;
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194 }
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195
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196 if ((u_int) value > max) {
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197 return NGX_PARSE_LARGE_TIME;
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198 }
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199
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200 total += value * scale;
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201
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202 if ((u_int) total > 2147483647) {
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203 return NGX_PARSE_LARGE_TIME;
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204 }
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205
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206 if (i >= line->len) {
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207 break;
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208 }
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209
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210 len = 0;
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211 start = &line->data[i + 1];
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212 }
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213
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214 return total;
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215 }
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