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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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42
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11 u_char *
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12 ngx_cpystrn(u_char *dst, u_char *src, size_t n)
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0
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13 {
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14 if (n == 0) {
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15 return dst;
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16 }
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17
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66
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18 for ( /* void */ ; --n; dst++, src++) {
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0
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19 *dst = *src;
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20
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21 if (*dst == '\0') {
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22 return dst;
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23 }
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24 }
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25
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26 *dst = '\0';
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27
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28 return dst;
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29 }
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30
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31
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42
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32 u_char *
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33 ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src)
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34
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34 {
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35 u_char *dst;
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36
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50
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37 dst = ngx_palloc(pool, src->len);
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38 if (dst == NULL) {
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34
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39 return NULL;
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40 }
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41
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42 ngx_memcpy(dst, src->data, src->len);
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43
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44 return dst;
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45 }
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46
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47
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4
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48 /*
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49 * supported formats:
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22
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50 * %[0][width][x][X]O off_t
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10
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51 * %[0][width]T time_t
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52 * %[0][width][u][x|X]z ssize_t/size_t
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53 * %[0][width][u][x|X]d int/u_int
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54 * %[0][width][u][x|X]l long
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55 * %[0][width|m][u][x|X]i ngx_int_t/ngx_uint_t
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56 * %[0][width][u][x|X]D int32_t/uint32_t
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57 * %[0][width][u][x|X]L int64_t/uint64_t
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44
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58 * %[0][width|m][u][x|X]A ngx_atomic_int_t/ngx_atomic_uint_t
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10
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59 * %P ngx_pid_t
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106
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60 * %M ngx_msec_t
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10
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61 * %r rlim_t
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62 * %p pointer
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63 * %V pointer to ngx_str_t
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64 * %s null-terminated string
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65 * %Z '\0'
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74
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66 * %N '\n'
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10
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67 * %c char
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68 * %% %
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4
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69 *
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10
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70 * reserved:
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71 * %t ptrdiff_t
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72 * %S null-teminated wchar string
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73 * %C wchar
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4
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74 */
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75
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10
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76
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52
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77 u_char * ngx_cdecl
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42
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78 ngx_sprintf(u_char *buf, const char *fmt, ...)
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10
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79 {
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80 u_char *p;
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81 va_list args;
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82
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83 va_start(args, fmt);
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84 p = ngx_vsnprintf(buf, /* STUB */ 65536, fmt, args);
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85 va_end(args);
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86
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87 return p;
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88 }
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89
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90
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52
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91 u_char * ngx_cdecl
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42
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92 ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...)
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4
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93 {
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10
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94 u_char *p;
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95 va_list args;
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96
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97 va_start(args, fmt);
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98 p = ngx_vsnprintf(buf, max, fmt, args);
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99 va_end(args);
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100
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101 return p;
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102 }
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103
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4
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104
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42
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105 u_char *
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106 ngx_vsnprintf(u_char *buf, size_t max, const char *fmt, va_list args)
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10
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107 {
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28
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108 u_char *p, zero, *last, temp[NGX_INT64_LEN + 1];
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109 /*
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110 * really we need temp[NGX_INT64_LEN] only,
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42
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111 * but icc issues the warning
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28
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112 */
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10
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113 int d;
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114 size_t len;
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115 uint32_t ui32;
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116 int64_t i64;
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117 uint64_t ui64;
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110
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118 ngx_msec_t ms;
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10
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119 ngx_str_t *s;
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42
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120 ngx_uint_t width, sign, hexadecimal, max_width;
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10
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121 static u_char hex[] = "0123456789abcdef";
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122 static u_char HEX[] = "0123456789ABCDEF";
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4
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123
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10
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124 if (max == 0) {
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125 return buf;
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126 }
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127
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128 last = buf + max;
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129
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130 while (*fmt && buf < last) {
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131
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132 /*
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133 * "buf < last" means that we could copy at least one character:
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134 * the plain character, "%%", "%c", and minus without the checking
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135 */
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136
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4
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137 if (*fmt == '%') {
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138
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10
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139 i64 = 0;
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140 ui64 = 0;
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141
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142 zero = (u_char) ((*++fmt == '0') ? '0' : ' ');
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4
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143 width = 0;
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144 sign = 1;
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145 hexadecimal = 0;
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42
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146 max_width = 0;
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4
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147
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26
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148 p = temp + NGX_INT64_LEN;
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4
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149
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150 while (*fmt >= '0' && *fmt <= '9') {
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151 width = width * 10 + *fmt++ - '0';
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152 }
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153
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154
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155 for ( ;; ) {
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156 switch (*fmt) {
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157
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158 case 'u':
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159 sign = 0;
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160 fmt++;
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161 continue;
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162
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16
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163 case 'm':
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42
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164 max_width = 1;
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16
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165 fmt++;
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166 continue;
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167
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10
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168 case 'X':
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169 hexadecimal = 2;
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170 sign = 0;
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171 fmt++;
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172 continue;
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173
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4
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174 case 'x':
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175 hexadecimal = 1;
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10
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176 sign = 0;
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4
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177 fmt++;
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178 continue;
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179
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180 default:
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181 break;
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182 }
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183
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184 break;
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185 }
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186
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187
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188 switch (*fmt) {
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189
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10
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190 case 'V':
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191 s = va_arg(args, ngx_str_t *);
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4
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192
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10
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193 len = (buf + s->len < last) ? s->len : (size_t) (last - buf);
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194 buf = ngx_cpymem(buf, s->data, len);
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195 fmt++;
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4
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196
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10
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197 continue;
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4
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198
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199 case 's':
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10
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200 p = va_arg(args, u_char *);
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4
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201
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10
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202 while (*p && buf < last) {
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4
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203 *buf++ = *p++;
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204 }
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205 fmt++;
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206
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207 continue;
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208
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10
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209 case 'O':
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210 i64 = (int64_t) va_arg(args, off_t);
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211 sign = 1;
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212 break;
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213
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214 case 'P':
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215 i64 = (int64_t) va_arg(args, ngx_pid_t);
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216 sign = 1;
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217 break;
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218
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219 case 'T':
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220 i64 = (int64_t) va_arg(args, time_t);
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221 sign = 1;
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222 break;
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223
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106
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224 case 'M':
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110
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225 ms = (ngx_msec_t) va_arg(args, ngx_msec_t);
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226 if ((ngx_msec_int_t) ms == -1) {
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227 sign = 1;
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228 i64 = -1;
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229 } else {
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230 sign = 0;
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231 ui64 = (uint64_t) ms;
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232 }
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106
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233 break;
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234
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10
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235 case 'z':
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236 if (sign) {
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237 i64 = (int64_t) va_arg(args, ssize_t);
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238 } else {
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239 ui64 = (uint64_t) va_arg(args, size_t);
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240 }
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241 break;
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242
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243 case 'i':
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244 if (sign) {
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245 i64 = (int64_t) va_arg(args, ngx_int_t);
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246 } else {
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247 ui64 = (uint64_t) va_arg(args, ngx_uint_t);
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248 }
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42
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249
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250 if (max_width) {
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251 width = NGX_INT_T_LEN;
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252 }
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253
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10
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254 break;
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255
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256 case 'd':
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257 if (sign) {
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258 i64 = (int64_t) va_arg(args, int);
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259 } else {
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260 ui64 = (uint64_t) va_arg(args, u_int);
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261 }
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262 break;
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263
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264 case 'l':
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265 if (sign) {
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266 i64 = (int64_t) va_arg(args, long);
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267 } else {
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268 ui64 = (uint64_t) va_arg(args, u_long);
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269 }
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270 break;
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271
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272 case 'D':
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273 if (sign) {
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274 i64 = (int64_t) va_arg(args, int32_t);
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275 } else {
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276 ui64 = (uint64_t) va_arg(args, uint32_t);
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277 }
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278 break;
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279
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280 case 'L':
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281 if (sign) {
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282 i64 = va_arg(args, int64_t);
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283 } else {
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284 ui64 = va_arg(args, uint64_t);
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285 }
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286 break;
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287
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42
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288 case 'A':
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289 if (sign) {
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290 i64 = (int64_t) va_arg(args, ngx_atomic_int_t);
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291 } else {
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44
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292 ui64 = (uint64_t) va_arg(args, ngx_atomic_uint_t);
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42
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293 }
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294
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295 if (max_width) {
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296 width = NGX_ATOMIC_T_LEN;
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297 }
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298
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299 break;
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300
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10
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301 #if !(NGX_WIN32)
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302 case 'r':
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303 i64 = (int64_t) va_arg(args, rlim_t);
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304 sign = 1;
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305 break;
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306 #endif
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307
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308 case 'p':
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309 ui64 = (uintptr_t) va_arg(args, void *);
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310 hexadecimal = 2;
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311 sign = 0;
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312 zero = '0';
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313 width = 8;
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314 break;
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315
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6
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316 case 'c':
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10
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317 d = va_arg(args, int);
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6
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318 *buf++ = (u_char) (d & 0xff);
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319 fmt++;
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320
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321 continue;
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322
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10
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323 case 'Z':
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324 *buf++ = '\0';
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325 fmt++;
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326
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327 continue;
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328
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74
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329 case 'N':
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330 #if (NGX_WIN32)
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331 *buf++ = CR;
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332 #endif
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333 *buf++ = LF;
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334 fmt++;
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335
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336 continue;
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337
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4
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338 case '%':
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339 *buf++ = '%';
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340 fmt++;
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341
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342 continue;
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343
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344 default:
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345 *buf++ = *fmt++;
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346
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347 continue;
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348 }
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349
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10
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350 if (sign) {
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351 if (i64 < 0) {
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352 *buf++ = '-';
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353 ui64 = (uint64_t) -i64;
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354
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355 } else {
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356 ui64 = (uint64_t) i64;
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357 }
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358 }
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359
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360 if (hexadecimal == 1) {
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361 do {
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362
|
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363 /* the "(uint32_t)" cast disables the BCC's warning */
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364 *--p = hex[(uint32_t) (ui64 & 0xf)];
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365
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|
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366 } while (ui64 >>= 4);
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367
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|
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368 } else if (hexadecimal == 2) {
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369 do {
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370
|
|
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371 /* the "(uint32_t)" cast disables the BCC's warning */
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372 *--p = HEX[(uint32_t) (ui64 & 0xf)];
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373
|
|
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374 } while (ui64 >>= 4);
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375
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|
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376 } else if (ui64 <= NGX_MAX_UINT32_VALUE) {
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377
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378 /*
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379 * To divide 64-bit number and to find the remainder
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380 * on the x86 platform gcc and icc call the libc functions
|
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381 * [u]divdi3() and [u]moddi3(), they call another function
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42
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382 * in its turn. On FreeBSD it is the qdivrem() function,
|
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10
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383 * its source code is about 170 lines of the code.
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384 * The glibc counterpart is about 150 lines of the code.
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385 *
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42
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386 * For 32-bit numbers and some divisors gcc and icc use
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387 * the inlined multiplication and shifts. For example,
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388 * unsigned "i32 / 10" is compiled to
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389 *
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|
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390 * (i32 * 0xCCCCCCCD) >> 35
|
|
10
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391 */
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392
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|
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393 ui32 = (uint32_t) ui64;
|
|
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394
|
|
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395 do {
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396 *--p = (u_char) (ui32 % 10 + '0');
|
|
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397 } while (ui32 /= 10);
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398
|
|
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399 } else {
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400 do {
|
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401 *--p = (u_char) (ui64 % 10 + '0');
|
|
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402 } while (ui64 /= 10);
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403 }
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404
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26
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405 len = (temp + NGX_INT64_LEN) - p;
|
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4
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406
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|
10
|
407 while (len++ < width && buf < last) {
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408 *buf++ = zero;
|
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4
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409 }
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410
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26
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411 len = (temp + NGX_INT64_LEN) - p;
|
|
10
|
412 if (buf + len > last) {
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413 len = last - buf;
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414 }
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415
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416 buf = ngx_cpymem(buf, p, len);
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4
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417
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|
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418 fmt++;
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419
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|
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420 } else {
|
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421 *buf++ = *fmt++;
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422 }
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423 }
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424
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|
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425 return buf;
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|
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426 }
|
|
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427
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|
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428
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|
42
|
429 ngx_int_t
|
|
|
430 ngx_rstrncmp(u_char *s1, u_char *s2, size_t n)
|
|
0
|
431 {
|
|
|
432 if (n == 0) {
|
|
|
433 return 0;
|
|
|
434 }
|
|
|
435
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|
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436 n--;
|
|
|
437
|
|
|
438 for ( ;; ) {
|
|
|
439 if (s1[n] != s2[n]) {
|
|
|
440 return s1[n] - s2[n];
|
|
|
441 }
|
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|
442
|
|
|
443 if (n == 0) {
|
|
|
444 return 0;
|
|
|
445 }
|
|
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446
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|
|
447 n--;
|
|
|
448 }
|
|
|
449 }
|
|
|
450
|
|
|
451
|
|
42
|
452 ngx_int_t
|
|
|
453 ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n)
|
|
4
|
454 {
|
|
|
455 u_char c1, c2;
|
|
|
456
|
|
|
457 if (n == 0) {
|
|
|
458 return 0;
|
|
|
459 }
|
|
|
460
|
|
|
461 n--;
|
|
|
462
|
|
|
463 for ( ;; ) {
|
|
|
464 c1 = s1[n];
|
|
|
465 if (c1 >= 'a' && c1 <= 'z') {
|
|
|
466 c1 -= 'a' - 'A';
|
|
|
467 }
|
|
|
468
|
|
|
469 c2 = s2[n];
|
|
|
470 if (c2 >= 'a' && c2 <= 'z') {
|
|
|
471 c2 -= 'a' - 'A';
|
|
|
472 }
|
|
|
473
|
|
|
474 if (c1 != c2) {
|
|
|
475 return c1 - c2;
|
|
|
476 }
|
|
|
477
|
|
|
478 if (n == 0) {
|
|
|
479 return 0;
|
|
|
480 }
|
|
|
481
|
|
|
482 n--;
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486
|
|
42
|
487 ngx_int_t
|
|
|
488 ngx_atoi(u_char *line, size_t n)
|
|
0
|
489 {
|
|
|
490 ngx_int_t value;
|
|
|
491
|
|
|
492 if (n == 0) {
|
|
|
493 return NGX_ERROR;
|
|
|
494 }
|
|
|
495
|
|
|
496 for (value = 0; n--; line++) {
|
|
|
497 if (*line < '0' || *line > '9') {
|
|
|
498 return NGX_ERROR;
|
|
|
499 }
|
|
|
500
|
|
|
501 value = value * 10 + (*line - '0');
|
|
|
502 }
|
|
|
503
|
|
|
504 if (value < 0) {
|
|
|
505 return NGX_ERROR;
|
|
|
506
|
|
|
507 } else {
|
|
|
508 return value;
|
|
|
509 }
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
50
|
513 ssize_t
|
|
|
514 ngx_atosz(u_char *line, size_t n)
|
|
|
515 {
|
|
|
516 ssize_t value;
|
|
|
517
|
|
|
518 if (n == 0) {
|
|
|
519 return NGX_ERROR;
|
|
|
520 }
|
|
|
521
|
|
|
522 for (value = 0; n--; line++) {
|
|
|
523 if (*line < '0' || *line > '9') {
|
|
|
524 return NGX_ERROR;
|
|
|
525 }
|
|
|
526
|
|
|
527 value = value * 10 + (*line - '0');
|
|
|
528 }
|
|
|
529
|
|
|
530 if (value < 0) {
|
|
|
531 return NGX_ERROR;
|
|
|
532
|
|
|
533 } else {
|
|
|
534 return value;
|
|
|
535 }
|
|
|
536 }
|
|
|
537
|
|
|
538
|
|
|
539 off_t
|
|
|
540 ngx_atoof(u_char *line, size_t n)
|
|
|
541 {
|
|
|
542 off_t value;
|
|
|
543
|
|
|
544 if (n == 0) {
|
|
|
545 return NGX_ERROR;
|
|
|
546 }
|
|
|
547
|
|
|
548 for (value = 0; n--; line++) {
|
|
|
549 if (*line < '0' || *line > '9') {
|
|
|
550 return NGX_ERROR;
|
|
|
551 }
|
|
|
552
|
|
|
553 value = value * 10 + (*line - '0');
|
|
|
554 }
|
|
|
555
|
|
|
556 if (value < 0) {
|
|
|
557 return NGX_ERROR;
|
|
|
558
|
|
|
559 } else {
|
|
|
560 return value;
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564
|
|
|
565 time_t
|
|
|
566 ngx_atotm(u_char *line, size_t n)
|
|
|
567 {
|
|
|
568 time_t value;
|
|
|
569
|
|
|
570 if (n == 0) {
|
|
|
571 return NGX_ERROR;
|
|
|
572 }
|
|
|
573
|
|
|
574 for (value = 0; n--; line++) {
|
|
|
575 if (*line < '0' || *line > '9') {
|
|
|
576 return NGX_ERROR;
|
|
|
577 }
|
|
|
578
|
|
|
579 value = value * 10 + (*line - '0');
|
|
|
580 }
|
|
|
581
|
|
|
582 if (value < 0) {
|
|
|
583 return NGX_ERROR;
|
|
|
584
|
|
|
585 } else {
|
|
|
586 return value;
|
|
|
587 }
|
|
|
588 }
|
|
|
589
|
|
|
590
|
|
42
|
591 ngx_int_t
|
|
|
592 ngx_hextoi(u_char *line, size_t n)
|
|
0
|
593 {
|
|
|
594 u_char ch;
|
|
|
595 ngx_int_t value;
|
|
|
596
|
|
|
597 if (n == 0) {
|
|
|
598 return NGX_ERROR;
|
|
|
599 }
|
|
|
600
|
|
|
601 for (value = 0; n--; line++) {
|
|
|
602 ch = *line;
|
|
|
603
|
|
|
604 if (ch >= '0' && ch <= '9') {
|
|
|
605 value = value * 16 + (ch - '0');
|
|
|
606 continue;
|
|
|
607 }
|
|
|
608
|
|
|
609 if (ch >= 'A' && ch <= 'F') {
|
|
|
610 value = value * 16 + (ch - 'A' + 10);
|
|
|
611 continue;
|
|
|
612 }
|
|
|
613
|
|
|
614 if (ch >= 'a' && ch <= 'f') {
|
|
|
615 value = value * 16 + (ch - 'a' + 10);
|
|
|
616 continue;
|
|
|
617 }
|
|
|
618
|
|
|
619 return NGX_ERROR;
|
|
|
620 }
|
|
|
621
|
|
|
622 if (value < 0) {
|
|
|
623 return NGX_ERROR;
|
|
|
624
|
|
|
625 } else {
|
|
|
626 return value;
|
|
|
627 }
|
|
|
628 }
|
|
|
629
|
|
|
630
|
|
42
|
631 void
|
|
|
632 ngx_md5_text(u_char *text, u_char *md5)
|
|
0
|
633 {
|
|
|
634 int i;
|
|
|
635 static u_char hex[] = "0123456789abcdef";
|
|
|
636
|
|
|
637 for (i = 0; i < 16; i++) {
|
|
|
638 *text++ = hex[md5[i] >> 4];
|
|
|
639 *text++ = hex[md5[i] & 0xf];
|
|
|
640 }
|
|
|
641
|
|
|
642 *text = '\0';
|
|
|
643 }
|
|
|
644
|
|
|
645
|
|
42
|
646 void
|
|
|
647 ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src)
|
|
0
|
648 {
|
|
|
649 u_char *d, *s;
|
|
|
650 size_t len;
|
|
|
651 static u_char basis64[] =
|
|
|
652 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
|
653
|
|
|
654 len = src->len;
|
|
|
655 s = src->data;
|
|
|
656 d = dst->data;
|
|
|
657
|
|
|
658 while (len > 2) {
|
|
|
659 *d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
|
660 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
|
661 *d++ = basis64[((s[1] & 0x0f) << 2) | (s[2] >> 6)];
|
|
|
662 *d++ = basis64[s[2] & 0x3f];
|
|
|
663
|
|
|
664 s += 3;
|
|
|
665 len -= 3;
|
|
|
666 }
|
|
|
667
|
|
|
668 if (len) {
|
|
|
669 *d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
|
670
|
|
|
671 if (len == 1) {
|
|
|
672 *d++ = basis64[(s[0] & 3) << 4];
|
|
|
673 *d++ = '=';
|
|
|
674
|
|
|
675 } else {
|
|
|
676 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
|
677 *d++ = basis64[(s[1] & 0x0f) << 2];
|
|
|
678 }
|
|
|
679
|
|
|
680 *d++ = '=';
|
|
|
681 }
|
|
|
682
|
|
|
683 dst->len = d - dst->data;
|
|
|
684 }
|
|
|
685
|
|
|
686
|
|
42
|
687 ngx_int_t
|
|
|
688 ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src)
|
|
0
|
689 {
|
|
|
690 size_t len;
|
|
|
691 u_char *d, *s;
|
|
|
692 static u_char basis64[] =
|
|
|
693 { 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
694 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
695 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 62, 77, 77, 77, 63,
|
|
|
696 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 77, 77, 77, 77, 77, 77,
|
|
|
697 77, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
|
|
|
698 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 77, 77, 77, 77, 77,
|
|
|
699 77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
|
|
|
700 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 77, 77, 77, 77, 77,
|
|
|
701
|
|
|
702 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
703 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
704 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
705 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
706 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
707 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
708 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
709 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77 };
|
|
|
710
|
|
|
711 for (len = 0; len < src->len; len++) {
|
|
|
712 if (src->data[len] == '=') {
|
|
|
713 break;
|
|
|
714 }
|
|
|
715
|
|
|
716 if (basis64[src->data[len]] == 77) {
|
|
|
717 return NGX_ERROR;
|
|
|
718 }
|
|
|
719 }
|
|
|
720
|
|
|
721 if (len % 4 == 1) {
|
|
|
722 return NGX_ERROR;
|
|
|
723 }
|
|
|
724
|
|
|
725 s = src->data;
|
|
|
726 d = dst->data;
|
|
|
727
|
|
|
728 while (len > 3) {
|
|
|
729 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
|
730 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
|
731 *d++ = (u_char) (basis64[s[2]] << 6 | basis64[s[3]]);
|
|
|
732
|
|
|
733 s += 4;
|
|
|
734 len -= 4;
|
|
|
735 }
|
|
|
736
|
|
|
737 if (len > 1) {
|
|
|
738 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
|
739 }
|
|
|
740
|
|
|
741 if (len > 2) {
|
|
|
742 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
|
743 }
|
|
|
744
|
|
|
745 dst->len = d - dst->data;
|
|
|
746
|
|
|
747 return NGX_OK;
|
|
|
748 }
|
|
|
749
|
|
|
750
|
|
72
|
751 size_t
|
|
|
752 ngx_utf_length(ngx_str_t *utf)
|
|
|
753 {
|
|
|
754 u_char c;
|
|
|
755 size_t len;
|
|
|
756 ngx_uint_t i;
|
|
|
757
|
|
|
758 for (len = 0, i = 0; i < utf->len; len++, i++) {
|
|
|
759
|
|
|
760 c = utf->data[i];
|
|
|
761
|
|
|
762 if (c < 0x80) {
|
|
|
763 continue;
|
|
|
764 }
|
|
|
765
|
|
76
|
766 if (c >= 0xc0) {
|
|
|
767 for (c <<= 1; c & 0x80; c <<= 1) {
|
|
|
768 i++;
|
|
|
769 }
|
|
|
770
|
|
|
771 continue;
|
|
72
|
772 }
|
|
|
773
|
|
76
|
774 /* invalid utf */
|
|
|
775
|
|
|
776 return utf->len;
|
|
72
|
777 }
|
|
|
778
|
|
|
779 return len;
|
|
|
780 }
|
|
|
781
|
|
|
782
|
|
76
|
783 u_char *
|
|
|
784 ngx_utf_cpystrn(u_char *dst, u_char *src, size_t n)
|
|
|
785 {
|
|
|
786 u_char c;
|
|
|
787
|
|
|
788 if (n == 0) {
|
|
|
789 return dst;
|
|
|
790 }
|
|
|
791
|
|
|
792 for ( /* void */ ; --n; dst++, src++) {
|
|
|
793
|
|
|
794 c = *src;
|
|
|
795 *dst = c;
|
|
|
796
|
|
|
797 if (c < 0x80) {
|
|
|
798 if (*dst != '\0') {
|
|
|
799 continue;
|
|
|
800 }
|
|
|
801
|
|
|
802 return dst;
|
|
|
803 }
|
|
|
804
|
|
|
805 if (c >= 0xc0) {
|
|
|
806 for (c <<= 1; c & 0x80; c <<= 1) {
|
|
|
807 *++dst = *++src;
|
|
|
808 }
|
|
|
809
|
|
|
810 continue;
|
|
|
811 }
|
|
|
812
|
|
|
813 /* invalid utf */
|
|
|
814 }
|
|
|
815
|
|
|
816 *dst = '\0';
|
|
|
817
|
|
|
818 return dst;
|
|
|
819 }
|
|
|
820
|
|
|
821
|
|
42
|
822 uintptr_t
|
|
|
823 ngx_escape_uri(u_char *dst, u_char *src, size_t size, ngx_uint_t type)
|
|
0
|
824 {
|
|
10
|
825 ngx_uint_t i, n;
|
|
|
826 uint32_t *escape;
|
|
2
|
827 static u_char hex[] = "0123456789abcdef";
|
|
10
|
828
|
|
42
|
829 /* " ", "#", "%", "?", %00-%1F, %7F-%FF */
|
|
34
|
830
|
|
10
|
831 static uint32_t uri[] =
|
|
2
|
832 { 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0
|
833
|
|
2
|
834 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
42
|
835 0x80000029, /* 1000 0000 0000 0000 0000 0000 0010 1001 */
|
|
2
|
836
|
|
|
837 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
838 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
839
|
|
|
840 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
841 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
0
|
842
|
|
2
|
843 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
844 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
845 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
846 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
|
|
|
847
|
|
42
|
848 /* " ", "#", "%", "+", "?", %00-%1F, %7F-%FF */
|
|
34
|
849
|
|
|
850 static uint32_t args[] =
|
|
|
851 { 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
852
|
|
|
853 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
42
|
854 0x80000829, /* 1000 0000 0000 0000 0000 1000 0010 1001 */
|
|
34
|
855
|
|
|
856 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
857 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
858
|
|
|
859 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
860 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
|
861
|
|
|
862 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
863 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
864 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
865 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
|
|
|
866
|
|
|
867 /* " ", """, "%", "'", %00-%1F, %7F-%FF */
|
|
|
868
|
|
10
|
869 static uint32_t html[] =
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870 { 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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871
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872 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
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42
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873 0x800000ad, /* 0000 0000 0000 0000 0000 0000 1010 1101 */
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10
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874
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875 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
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876 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
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877
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878 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
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879 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
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880
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881 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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882 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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883 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
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884 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */ };
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885
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886
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34
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887 switch (type) {
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888 case NGX_ESCAPE_HTML:
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10
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889 escape = html;
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34
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890 break;
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891 case NGX_ESCAPE_ARGS:
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892 escape = args;
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893 break;
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894 default:
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10
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895 escape = uri;
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34
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896 break;
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10
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897 }
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898
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2
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899 if (dst == NULL) {
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900
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901 /* find the number of the characters to be escaped */
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0
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902
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2
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903 n = 0;
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904
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905 for (i = 0; i < size; i++) {
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906 if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
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907 n++;
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908 }
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909 src++;
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910 }
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911
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34
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912 return (uintptr_t) n;
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0
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913 }
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914
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2
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915 for (i = 0; i < size; i++) {
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916 if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
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917 *dst++ = '%';
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918 *dst++ = hex[*src >> 4];
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919 *dst++ = hex[*src & 0xf];
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920 src++;
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0
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921
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2
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922 } else {
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923 *dst++ = *src++;
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924 }
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0
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925 }
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926
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34
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927 return (uintptr_t) dst;
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0
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928 }
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