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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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122
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193 len = s->len & 0xffff;
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194 len = (buf + len < last) ? len : (size_t) (last - buf);
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195
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10
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196 buf = ngx_cpymem(buf, s->data, len);
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197 fmt++;
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4
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198
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10
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199 continue;
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4
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200
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201 case 's':
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10
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202 p = va_arg(args, u_char *);
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4
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203
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10
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204 while (*p && buf < last) {
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4
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205 *buf++ = *p++;
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206 }
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207 fmt++;
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208
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209 continue;
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210
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10
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211 case 'O':
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212 i64 = (int64_t) va_arg(args, off_t);
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213 sign = 1;
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214 break;
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215
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216 case 'P':
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217 i64 = (int64_t) va_arg(args, ngx_pid_t);
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218 sign = 1;
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219 break;
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220
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221 case 'T':
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222 i64 = (int64_t) va_arg(args, time_t);
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223 sign = 1;
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224 break;
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225
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106
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226 case 'M':
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110
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227 ms = (ngx_msec_t) va_arg(args, ngx_msec_t);
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228 if ((ngx_msec_int_t) ms == -1) {
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229 sign = 1;
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230 i64 = -1;
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231 } else {
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232 sign = 0;
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233 ui64 = (uint64_t) ms;
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234 }
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106
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235 break;
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236
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10
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237 case 'z':
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238 if (sign) {
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239 i64 = (int64_t) va_arg(args, ssize_t);
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240 } else {
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241 ui64 = (uint64_t) va_arg(args, size_t);
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242 }
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243 break;
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244
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245 case 'i':
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246 if (sign) {
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247 i64 = (int64_t) va_arg(args, ngx_int_t);
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248 } else {
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249 ui64 = (uint64_t) va_arg(args, ngx_uint_t);
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250 }
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42
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251
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252 if (max_width) {
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253 width = NGX_INT_T_LEN;
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254 }
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255
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10
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256 break;
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257
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258 case 'd':
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259 if (sign) {
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260 i64 = (int64_t) va_arg(args, int);
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261 } else {
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262 ui64 = (uint64_t) va_arg(args, u_int);
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263 }
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264 break;
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265
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266 case 'l':
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267 if (sign) {
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268 i64 = (int64_t) va_arg(args, long);
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269 } else {
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270 ui64 = (uint64_t) va_arg(args, u_long);
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271 }
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272 break;
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273
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274 case 'D':
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275 if (sign) {
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276 i64 = (int64_t) va_arg(args, int32_t);
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277 } else {
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278 ui64 = (uint64_t) va_arg(args, uint32_t);
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279 }
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280 break;
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281
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282 case 'L':
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283 if (sign) {
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284 i64 = va_arg(args, int64_t);
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285 } else {
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286 ui64 = va_arg(args, uint64_t);
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287 }
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288 break;
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289
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42
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290 case 'A':
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291 if (sign) {
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292 i64 = (int64_t) va_arg(args, ngx_atomic_int_t);
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293 } else {
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44
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294 ui64 = (uint64_t) va_arg(args, ngx_atomic_uint_t);
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42
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295 }
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296
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297 if (max_width) {
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298 width = NGX_ATOMIC_T_LEN;
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299 }
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300
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301 break;
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302
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10
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303 #if !(NGX_WIN32)
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304 case 'r':
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305 i64 = (int64_t) va_arg(args, rlim_t);
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306 sign = 1;
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307 break;
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308 #endif
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309
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310 case 'p':
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311 ui64 = (uintptr_t) va_arg(args, void *);
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312 hexadecimal = 2;
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313 sign = 0;
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314 zero = '0';
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162
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315 width = NGX_PTR_SIZE * 2;
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10
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316 break;
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317
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6
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318 case 'c':
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10
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319 d = va_arg(args, int);
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6
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320 *buf++ = (u_char) (d & 0xff);
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321 fmt++;
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322
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323 continue;
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324
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10
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325 case 'Z':
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326 *buf++ = '\0';
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327 fmt++;
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328
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329 continue;
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330
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74
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331 case 'N':
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332 #if (NGX_WIN32)
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333 *buf++ = CR;
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334 #endif
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335 *buf++ = LF;
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336 fmt++;
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337
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338 continue;
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339
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4
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340 case '%':
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341 *buf++ = '%';
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342 fmt++;
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343
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344 continue;
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345
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346 default:
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347 *buf++ = *fmt++;
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348
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349 continue;
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350 }
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351
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10
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352 if (sign) {
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353 if (i64 < 0) {
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354 *buf++ = '-';
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355 ui64 = (uint64_t) -i64;
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356
|
|
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357 } else {
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358 ui64 = (uint64_t) i64;
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359 }
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360 }
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361
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362 if (hexadecimal == 1) {
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363 do {
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364
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|
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365 /* the "(uint32_t)" cast disables the BCC's warning */
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366 *--p = hex[(uint32_t) (ui64 & 0xf)];
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367
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|
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368 } while (ui64 >>= 4);
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369
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370 } else if (hexadecimal == 2) {
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371 do {
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372
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|
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373 /* the "(uint32_t)" cast disables the BCC's warning */
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374 *--p = HEX[(uint32_t) (ui64 & 0xf)];
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375
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|
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376 } while (ui64 >>= 4);
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377
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|
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378 } else if (ui64 <= NGX_MAX_UINT32_VALUE) {
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379
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|
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380 /*
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381 * To divide 64-bit number and to find the remainder
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382 * on the x86 platform gcc and icc call the libc functions
|
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383 * [u]divdi3() and [u]moddi3(), they call another function
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42
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384 * in its turn. On FreeBSD it is the qdivrem() function,
|
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10
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385 * its source code is about 170 lines of the code.
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386 * The glibc counterpart is about 150 lines of the code.
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387 *
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42
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388 * For 32-bit numbers and some divisors gcc and icc use
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389 * the inlined multiplication and shifts. For example,
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390 * unsigned "i32 / 10" is compiled to
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391 *
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|
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392 * (i32 * 0xCCCCCCCD) >> 35
|
|
10
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393 */
|
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394
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|
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395 ui32 = (uint32_t) ui64;
|
|
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396
|
|
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397 do {
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398 *--p = (u_char) (ui32 % 10 + '0');
|
|
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399 } while (ui32 /= 10);
|
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400
|
|
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401 } else {
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402 do {
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403 *--p = (u_char) (ui64 % 10 + '0');
|
|
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404 } while (ui64 /= 10);
|
|
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405 }
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406
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26
|
407 len = (temp + NGX_INT64_LEN) - p;
|
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4
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408
|
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10
|
409 while (len++ < width && buf < last) {
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410 *buf++ = zero;
|
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4
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411 }
|
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412
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26
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413 len = (temp + NGX_INT64_LEN) - p;
|
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10
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414 if (buf + len > last) {
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415 len = last - buf;
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416 }
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417
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|
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418 buf = ngx_cpymem(buf, p, len);
|
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4
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419
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|
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420 fmt++;
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421
|
|
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422 } else {
|
|
|
423 *buf++ = *fmt++;
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|
|
424 }
|
|
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425 }
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426
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|
|
427 return buf;
|
|
|
428 }
|
|
|
429
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|
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430
|
|
42
|
431 ngx_int_t
|
|
|
432 ngx_rstrncmp(u_char *s1, u_char *s2, size_t n)
|
|
0
|
433 {
|
|
|
434 if (n == 0) {
|
|
|
435 return 0;
|
|
|
436 }
|
|
|
437
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|
|
438 n--;
|
|
|
439
|
|
|
440 for ( ;; ) {
|
|
|
441 if (s1[n] != s2[n]) {
|
|
|
442 return s1[n] - s2[n];
|
|
|
443 }
|
|
|
444
|
|
|
445 if (n == 0) {
|
|
|
446 return 0;
|
|
|
447 }
|
|
|
448
|
|
|
449 n--;
|
|
|
450 }
|
|
|
451 }
|
|
|
452
|
|
|
453
|
|
42
|
454 ngx_int_t
|
|
|
455 ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n)
|
|
4
|
456 {
|
|
|
457 u_char c1, c2;
|
|
|
458
|
|
|
459 if (n == 0) {
|
|
|
460 return 0;
|
|
|
461 }
|
|
|
462
|
|
|
463 n--;
|
|
|
464
|
|
|
465 for ( ;; ) {
|
|
|
466 c1 = s1[n];
|
|
|
467 if (c1 >= 'a' && c1 <= 'z') {
|
|
|
468 c1 -= 'a' - 'A';
|
|
|
469 }
|
|
|
470
|
|
|
471 c2 = s2[n];
|
|
|
472 if (c2 >= 'a' && c2 <= 'z') {
|
|
|
473 c2 -= 'a' - 'A';
|
|
|
474 }
|
|
|
475
|
|
|
476 if (c1 != c2) {
|
|
|
477 return c1 - c2;
|
|
|
478 }
|
|
|
479
|
|
|
480 if (n == 0) {
|
|
|
481 return 0;
|
|
|
482 }
|
|
|
483
|
|
|
484 n--;
|
|
|
485 }
|
|
|
486 }
|
|
|
487
|
|
|
488
|
|
42
|
489 ngx_int_t
|
|
274
|
490 ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2)
|
|
|
491 {
|
|
|
492 size_t n;
|
|
|
493 ngx_int_t m, z;
|
|
|
494
|
|
|
495 if (n1 <= n2) {
|
|
|
496 n = n1;
|
|
|
497 z = -1;
|
|
|
498
|
|
|
499 } else {
|
|
|
500 n = n2;
|
|
|
501 z = 1;
|
|
|
502 }
|
|
|
503
|
|
|
504 m = ngx_memcmp(s1, s2, n);
|
|
|
505
|
|
|
506 if (m || n1 == n2) {
|
|
|
507 return m;
|
|
|
508 }
|
|
|
509
|
|
|
510 return z;
|
|
|
511 }
|
|
|
512
|
|
|
513
|
|
|
514 ngx_int_t
|
|
42
|
515 ngx_atoi(u_char *line, size_t n)
|
|
0
|
516 {
|
|
|
517 ngx_int_t value;
|
|
|
518
|
|
|
519 if (n == 0) {
|
|
|
520 return NGX_ERROR;
|
|
|
521 }
|
|
|
522
|
|
|
523 for (value = 0; n--; line++) {
|
|
|
524 if (*line < '0' || *line > '9') {
|
|
|
525 return NGX_ERROR;
|
|
|
526 }
|
|
|
527
|
|
|
528 value = value * 10 + (*line - '0');
|
|
|
529 }
|
|
|
530
|
|
|
531 if (value < 0) {
|
|
|
532 return NGX_ERROR;
|
|
|
533
|
|
|
534 } else {
|
|
|
535 return value;
|
|
|
536 }
|
|
|
537 }
|
|
|
538
|
|
|
539
|
|
50
|
540 ssize_t
|
|
|
541 ngx_atosz(u_char *line, size_t n)
|
|
|
542 {
|
|
|
543 ssize_t value;
|
|
|
544
|
|
|
545 if (n == 0) {
|
|
|
546 return NGX_ERROR;
|
|
|
547 }
|
|
|
548
|
|
|
549 for (value = 0; n--; line++) {
|
|
|
550 if (*line < '0' || *line > '9') {
|
|
|
551 return NGX_ERROR;
|
|
|
552 }
|
|
|
553
|
|
|
554 value = value * 10 + (*line - '0');
|
|
|
555 }
|
|
|
556
|
|
|
557 if (value < 0) {
|
|
|
558 return NGX_ERROR;
|
|
|
559
|
|
|
560 } else {
|
|
|
561 return value;
|
|
|
562 }
|
|
|
563 }
|
|
|
564
|
|
|
565
|
|
|
566 off_t
|
|
|
567 ngx_atoof(u_char *line, size_t n)
|
|
|
568 {
|
|
|
569 off_t value;
|
|
|
570
|
|
|
571 if (n == 0) {
|
|
|
572 return NGX_ERROR;
|
|
|
573 }
|
|
|
574
|
|
|
575 for (value = 0; n--; line++) {
|
|
|
576 if (*line < '0' || *line > '9') {
|
|
|
577 return NGX_ERROR;
|
|
|
578 }
|
|
|
579
|
|
|
580 value = value * 10 + (*line - '0');
|
|
|
581 }
|
|
|
582
|
|
|
583 if (value < 0) {
|
|
|
584 return NGX_ERROR;
|
|
|
585
|
|
|
586 } else {
|
|
|
587 return value;
|
|
|
588 }
|
|
|
589 }
|
|
|
590
|
|
|
591
|
|
|
592 time_t
|
|
|
593 ngx_atotm(u_char *line, size_t n)
|
|
|
594 {
|
|
|
595 time_t value;
|
|
|
596
|
|
|
597 if (n == 0) {
|
|
|
598 return NGX_ERROR;
|
|
|
599 }
|
|
|
600
|
|
|
601 for (value = 0; n--; line++) {
|
|
|
602 if (*line < '0' || *line > '9') {
|
|
|
603 return NGX_ERROR;
|
|
|
604 }
|
|
|
605
|
|
|
606 value = value * 10 + (*line - '0');
|
|
|
607 }
|
|
|
608
|
|
|
609 if (value < 0) {
|
|
|
610 return NGX_ERROR;
|
|
|
611
|
|
|
612 } else {
|
|
|
613 return value;
|
|
|
614 }
|
|
|
615 }
|
|
|
616
|
|
|
617
|
|
42
|
618 ngx_int_t
|
|
|
619 ngx_hextoi(u_char *line, size_t n)
|
|
0
|
620 {
|
|
250
|
621 u_char c, ch;
|
|
0
|
622 ngx_int_t value;
|
|
|
623
|
|
|
624 if (n == 0) {
|
|
|
625 return NGX_ERROR;
|
|
|
626 }
|
|
|
627
|
|
|
628 for (value = 0; n--; line++) {
|
|
|
629 ch = *line;
|
|
|
630
|
|
|
631 if (ch >= '0' && ch <= '9') {
|
|
|
632 value = value * 16 + (ch - '0');
|
|
|
633 continue;
|
|
|
634 }
|
|
|
635
|
|
250
|
636 c = (u_char) (ch | 0x20);
|
|
0
|
637
|
|
250
|
638 if (c >= 'a' && c <= 'f') {
|
|
|
639 value = value * 16 + (c - 'a' + 10);
|
|
0
|
640 continue;
|
|
|
641 }
|
|
|
642
|
|
|
643 return NGX_ERROR;
|
|
|
644 }
|
|
|
645
|
|
|
646 if (value < 0) {
|
|
|
647 return NGX_ERROR;
|
|
|
648
|
|
|
649 } else {
|
|
|
650 return value;
|
|
|
651 }
|
|
|
652 }
|
|
|
653
|
|
|
654
|
|
42
|
655 void
|
|
|
656 ngx_md5_text(u_char *text, u_char *md5)
|
|
0
|
657 {
|
|
|
658 int i;
|
|
|
659 static u_char hex[] = "0123456789abcdef";
|
|
|
660
|
|
|
661 for (i = 0; i < 16; i++) {
|
|
|
662 *text++ = hex[md5[i] >> 4];
|
|
|
663 *text++ = hex[md5[i] & 0xf];
|
|
|
664 }
|
|
|
665
|
|
|
666 *text = '\0';
|
|
|
667 }
|
|
|
668
|
|
|
669
|
|
42
|
670 void
|
|
|
671 ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src)
|
|
0
|
672 {
|
|
|
673 u_char *d, *s;
|
|
|
674 size_t len;
|
|
|
675 static u_char basis64[] =
|
|
|
676 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
|
677
|
|
|
678 len = src->len;
|
|
|
679 s = src->data;
|
|
|
680 d = dst->data;
|
|
|
681
|
|
|
682 while (len > 2) {
|
|
|
683 *d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
|
684 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
|
685 *d++ = basis64[((s[1] & 0x0f) << 2) | (s[2] >> 6)];
|
|
|
686 *d++ = basis64[s[2] & 0x3f];
|
|
|
687
|
|
|
688 s += 3;
|
|
|
689 len -= 3;
|
|
|
690 }
|
|
|
691
|
|
|
692 if (len) {
|
|
|
693 *d++ = basis64[(s[0] >> 2) & 0x3f];
|
|
|
694
|
|
|
695 if (len == 1) {
|
|
|
696 *d++ = basis64[(s[0] & 3) << 4];
|
|
|
697 *d++ = '=';
|
|
|
698
|
|
|
699 } else {
|
|
|
700 *d++ = basis64[((s[0] & 3) << 4) | (s[1] >> 4)];
|
|
|
701 *d++ = basis64[(s[1] & 0x0f) << 2];
|
|
|
702 }
|
|
|
703
|
|
|
704 *d++ = '=';
|
|
|
705 }
|
|
|
706
|
|
|
707 dst->len = d - dst->data;
|
|
|
708 }
|
|
|
709
|
|
|
710
|
|
42
|
711 ngx_int_t
|
|
|
712 ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src)
|
|
0
|
713 {
|
|
|
714 size_t len;
|
|
|
715 u_char *d, *s;
|
|
254
|
716 static u_char basis64[] = {
|
|
|
717 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
718 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
719 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 62, 77, 77, 77, 63,
|
|
|
720 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 77, 77, 77, 77, 77, 77,
|
|
|
721 77, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
|
|
|
722 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 77, 77, 77, 77, 77,
|
|
|
723 77, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
|
|
|
724 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 77, 77, 77, 77, 77,
|
|
0
|
725
|
|
254
|
726 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
727 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
728 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
729 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
730 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
731 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
732 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77,
|
|
|
733 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77, 77
|
|
|
734 };
|
|
0
|
735
|
|
|
736 for (len = 0; len < src->len; len++) {
|
|
|
737 if (src->data[len] == '=') {
|
|
|
738 break;
|
|
|
739 }
|
|
|
740
|
|
|
741 if (basis64[src->data[len]] == 77) {
|
|
|
742 return NGX_ERROR;
|
|
|
743 }
|
|
|
744 }
|
|
|
745
|
|
|
746 if (len % 4 == 1) {
|
|
|
747 return NGX_ERROR;
|
|
|
748 }
|
|
|
749
|
|
|
750 s = src->data;
|
|
|
751 d = dst->data;
|
|
|
752
|
|
|
753 while (len > 3) {
|
|
|
754 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
|
755 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
|
756 *d++ = (u_char) (basis64[s[2]] << 6 | basis64[s[3]]);
|
|
|
757
|
|
|
758 s += 4;
|
|
|
759 len -= 4;
|
|
|
760 }
|
|
|
761
|
|
|
762 if (len > 1) {
|
|
|
763 *d++ = (u_char) (basis64[s[0]] << 2 | basis64[s[1]] >> 4);
|
|
|
764 }
|
|
|
765
|
|
|
766 if (len > 2) {
|
|
|
767 *d++ = (u_char) (basis64[s[1]] << 4 | basis64[s[2]] >> 2);
|
|
|
768 }
|
|
|
769
|
|
|
770 dst->len = d - dst->data;
|
|
|
771
|
|
|
772 return NGX_OK;
|
|
|
773 }
|
|
|
774
|
|
|
775
|
|
206
|
776 /*
|
|
|
777 * ngx_utf_decode() decodes two and more bytes UTF sequences only
|
|
|
778 * the return values:
|
|
|
779 * 0x80 - 0x10ffff valid character
|
|
|
780 * 0x10ffff - 0xfffffffd invalid sequence
|
|
|
781 * 0xfffffffe incomplete sequence
|
|
|
782 * 0xffffffff error
|
|
|
783 */
|
|
|
784
|
|
|
785 uint32_t
|
|
|
786 ngx_utf_decode(u_char **p, size_t n)
|
|
|
787 {
|
|
|
788 size_t len;
|
|
|
789 uint32_t u, i, valid;
|
|
|
790
|
|
|
791 u = **p;
|
|
|
792
|
|
|
793 if (u > 0xf0) {
|
|
|
794
|
|
|
795 u &= 0x07;
|
|
|
796 valid = 0xffff;
|
|
|
797 len = 3;
|
|
|
798
|
|
|
799 } else if (u > 0xe0) {
|
|
|
800
|
|
|
801 u &= 0x0f;
|
|
|
802 valid = 0x7ff;
|
|
|
803 len = 2;
|
|
|
804
|
|
|
805 } else if (u > 0xc0) {
|
|
|
806
|
|
|
807 u &= 0x1f;
|
|
|
808 valid = 0x7f;
|
|
|
809 len = 1;
|
|
|
810
|
|
|
811 } else {
|
|
|
812 (*p)++;
|
|
|
813 return 0xffffffff;
|
|
|
814 }
|
|
|
815
|
|
|
816 if (n - 1 < len) {
|
|
|
817 return 0xfffffffe;
|
|
|
818 }
|
|
|
819
|
|
|
820 (*p)++;
|
|
|
821
|
|
|
822 while (len) {
|
|
|
823 i = *(*p)++;
|
|
|
824
|
|
|
825 if (i < 0x80) {
|
|
|
826 return 0xffffffff;
|
|
|
827 }
|
|
|
828
|
|
|
829 u = (u << 6) | (i & 0x3f);
|
|
|
830
|
|
|
831 len--;
|
|
|
832 }
|
|
|
833
|
|
|
834 if (u > valid) {
|
|
|
835 return u;
|
|
|
836 }
|
|
|
837
|
|
|
838 return 0xffffffff;
|
|
|
839 }
|
|
|
840
|
|
|
841
|
|
72
|
842 size_t
|
|
206
|
843 ngx_utf_length(u_char *p, size_t n)
|
|
72
|
844 {
|
|
|
845 u_char c;
|
|
|
846 size_t len;
|
|
|
847 ngx_uint_t i;
|
|
|
848
|
|
206
|
849 for (len = 0, i = 0; i < n; len++, i++) {
|
|
72
|
850
|
|
206
|
851 c = p[i];
|
|
72
|
852
|
|
|
853 if (c < 0x80) {
|
|
|
854 continue;
|
|
|
855 }
|
|
|
856
|
|
76
|
857 if (c >= 0xc0) {
|
|
|
858 for (c <<= 1; c & 0x80; c <<= 1) {
|
|
|
859 i++;
|
|
|
860 }
|
|
|
861
|
|
|
862 continue;
|
|
72
|
863 }
|
|
|
864
|
|
76
|
865 /* invalid utf */
|
|
|
866
|
|
206
|
867 return n;
|
|
72
|
868 }
|
|
|
869
|
|
|
870 return len;
|
|
|
871 }
|
|
|
872
|
|
|
873
|
|
76
|
874 u_char *
|
|
|
875 ngx_utf_cpystrn(u_char *dst, u_char *src, size_t n)
|
|
|
876 {
|
|
|
877 u_char c;
|
|
|
878
|
|
|
879 if (n == 0) {
|
|
|
880 return dst;
|
|
|
881 }
|
|
|
882
|
|
|
883 for ( /* void */ ; --n; dst++, src++) {
|
|
|
884
|
|
|
885 c = *src;
|
|
|
886 *dst = c;
|
|
|
887
|
|
|
888 if (c < 0x80) {
|
|
|
889 if (*dst != '\0') {
|
|
|
890 continue;
|
|
|
891 }
|
|
|
892
|
|
|
893 return dst;
|
|
|
894 }
|
|
|
895
|
|
|
896 if (c >= 0xc0) {
|
|
|
897 for (c <<= 1; c & 0x80; c <<= 1) {
|
|
|
898 *++dst = *++src;
|
|
|
899 }
|
|
|
900
|
|
|
901 continue;
|
|
|
902 }
|
|
|
903
|
|
|
904 /* invalid utf */
|
|
|
905 }
|
|
|
906
|
|
|
907 *dst = '\0';
|
|
|
908
|
|
|
909 return dst;
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
42
|
913 uintptr_t
|
|
|
914 ngx_escape_uri(u_char *dst, u_char *src, size_t size, ngx_uint_t type)
|
|
0
|
915 {
|
|
254
|
916 ngx_uint_t i, n;
|
|
|
917 uint32_t *escape;
|
|
|
918 static u_char hex[] = "0123456789abcdef";
|
|
10
|
919
|
|
254
|
920 /* " ", "#", "%", "?", %00-%1F, %7F-%FF */
|
|
34
|
921
|
|
254
|
922 static uint32_t uri[] = {
|
|
|
923 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
0
|
924
|
|
254
|
925 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
|
926 0x80000029, /* 1000 0000 0000 0000 0000 0000 0010 1001 */
|
|
|
927
|
|
|
928 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
929 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
2
|
930
|
|
254
|
931 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
932 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
0
|
933
|
|
254
|
934 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
935 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
936 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
937 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
938 };
|
|
2
|
939
|
|
254
|
940 /* " ", "#", "%", "+", "?", %00-%1F, %7F-%FF */
|
|
34
|
941
|
|
254
|
942 static uint32_t args[] = {
|
|
|
943 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
944
|
|
|
945 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
|
946 0x80000829, /* 1000 0000 0000 0000 0000 1000 0010 1001 */
|
|
34
|
947
|
|
254
|
948 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
949 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
34
|
950
|
|
254
|
951 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
952 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
34
|
953
|
|
254
|
954 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
955 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
956 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
957 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
958 };
|
|
34
|
959
|
|
254
|
960 /* " ", """, "%", "'", %00-%1F, %7F-%FF */
|
|
34
|
961
|
|
254
|
962 static uint32_t html[] = {
|
|
|
963 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
10
|
964
|
|
254
|
965 /* ?>=< ;:98 7654 3210 /.-, +*)( '&%$ #"! */
|
|
|
966 0x800000ad, /* 0000 0000 0000 0000 0000 0000 1010 1101 */
|
|
|
967
|
|
|
968 /* _^]\ [ZYX WVUT SRQP ONML KJIH GFED CBA@ */
|
|
|
969 0x00000000, /* 0000 0000 0000 0000 0000 0000 0000 0000 */
|
|
10
|
970
|
|
254
|
971 /* ~}| {zyx wvut srqp onml kjih gfed cba` */
|
|
|
972 0x80000000, /* 1000 0000 0000 0000 0000 0000 0000 0000 */
|
|
10
|
973
|
|
254
|
974 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
975 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
976 0xffffffff, /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
977 0xffffffff /* 1111 1111 1111 1111 1111 1111 1111 1111 */
|
|
|
978 };
|
|
10
|
979
|
|
|
980
|
|
34
|
981 switch (type) {
|
|
|
982 case NGX_ESCAPE_HTML:
|
|
10
|
983 escape = html;
|
|
34
|
984 break;
|
|
|
985 case NGX_ESCAPE_ARGS:
|
|
|
986 escape = args;
|
|
|
987 break;
|
|
|
988 default:
|
|
10
|
989 escape = uri;
|
|
34
|
990 break;
|
|
10
|
991 }
|
|
|
992
|
|
2
|
993 if (dst == NULL) {
|
|
|
994
|
|
|
995 /* find the number of the characters to be escaped */
|
|
0
|
996
|
|
2
|
997 n = 0;
|
|
|
998
|
|
|
999 for (i = 0; i < size; i++) {
|
|
|
1000 if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
|
|
|
1001 n++;
|
|
|
1002 }
|
|
|
1003 src++;
|
|
|
1004 }
|
|
|
1005
|
|
34
|
1006 return (uintptr_t) n;
|
|
0
|
1007 }
|
|
|
1008
|
|
2
|
1009 for (i = 0; i < size; i++) {
|
|
|
1010 if (escape[*src >> 5] & (1 << (*src & 0x1f))) {
|
|
|
1011 *dst++ = '%';
|
|
|
1012 *dst++ = hex[*src >> 4];
|
|
|
1013 *dst++ = hex[*src & 0xf];
|
|
|
1014 src++;
|
|
0
|
1015
|
|
2
|
1016 } else {
|
|
|
1017 *dst++ = *src++;
|
|
|
1018 }
|
|
0
|
1019 }
|
|
|
1020
|
|
34
|
1021 return (uintptr_t) dst;
|
|
0
|
1022 }
|
|
126
|
1023
|
|
|
1024
|
|
|
1025 void
|
|
150
|
1026 ngx_unescape_uri(u_char **dst, u_char **src, size_t size, ngx_uint_t type)
|
|
126
|
1027 {
|
|
|
1028 u_char *d, *s, ch, c, decoded;
|
|
|
1029 enum {
|
|
|
1030 sw_usual = 0,
|
|
|
1031 sw_quoted,
|
|
|
1032 sw_quoted_second
|
|
|
1033 } state;
|
|
|
1034
|
|
|
1035 d = *dst;
|
|
|
1036 s = *src;
|
|
|
1037
|
|
|
1038 state = 0;
|
|
|
1039 decoded = 0;
|
|
|
1040
|
|
|
1041 while (size--) {
|
|
|
1042
|
|
|
1043 ch = *s++;
|
|
|
1044
|
|
|
1045 switch (state) {
|
|
|
1046 case sw_usual:
|
|
150
|
1047 if (ch == '?' && type == NGX_UNESCAPE_URI) {
|
|
126
|
1048 *d++ = ch;
|
|
|
1049 goto done;
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 if (ch == '%') {
|
|
|
1053 state = sw_quoted;
|
|
|
1054 break;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 *d++ = ch;
|
|
|
1058 break;
|
|
|
1059
|
|
|
1060 case sw_quoted:
|
|
|
1061
|
|
|
1062 if (ch >= '0' && ch <= '9') {
|
|
|
1063 decoded = (u_char) (ch - '0');
|
|
|
1064 state = sw_quoted_second;
|
|
|
1065 break;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 c = (u_char) (ch | 0x20);
|
|
|
1069 if (c >= 'a' && c <= 'f') {
|
|
|
1070 decoded = (u_char) (c - 'a' + 10);
|
|
|
1071 state = sw_quoted_second;
|
|
|
1072 break;
|
|
|
1073 }
|
|
|
1074
|
|
138
|
1075 /* the invalid quoted character */
|
|
126
|
1076
|
|
138
|
1077 state = sw_usual;
|
|
|
1078
|
|
|
1079 *d++ = ch;
|
|
126
|
1080
|
|
|
1081 break;
|
|
|
1082
|
|
|
1083 case sw_quoted_second:
|
|
|
1084
|
|
138
|
1085 state = sw_usual;
|
|
|
1086
|
|
126
|
1087 if (ch >= '0' && ch <= '9') {
|
|
|
1088 ch = (u_char) ((decoded << 4) + ch - '0');
|
|
|
1089
|
|
150
|
1090 if (type == NGX_UNESCAPE_URI) {
|
|
|
1091 if (ch > '%' && ch < 0x7f) {
|
|
|
1092 *d++ = ch;
|
|
|
1093 break;
|
|
|
1094 }
|
|
|
1095
|
|
|
1096 *d++ = '%'; *d++ = *(s - 2); *d++ = *(s - 1);
|
|
|
1097
|
|
126
|
1098 break;
|
|
|
1099 }
|
|
|
1100
|
|
150
|
1101 *d++ = ch;
|
|
126
|
1102
|
|
|
1103 break;
|
|
|
1104 }
|
|
|
1105
|
|
|
1106 c = (u_char) (ch | 0x20);
|
|
|
1107 if (c >= 'a' && c <= 'f') {
|
|
|
1108 ch = (u_char) ((decoded << 4) + c - 'a' + 10);
|
|
|
1109
|
|
150
|
1110 if (type == NGX_UNESCAPE_URI) {
|
|
|
1111 if (ch == '?') {
|
|
|
1112 *d++ = ch;
|
|
|
1113 goto done;
|
|
|
1114 }
|
|
126
|
1115
|
|
150
|
1116 if (ch > '%' && ch < 0x7f) {
|
|
|
1117 *d++ = ch;
|
|
|
1118 break;
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 *d++ = '%'; *d++ = *(s - 2); *d++ = *(s - 1);
|
|
126
|
1122 break;
|
|
|
1123 }
|
|
|
1124
|
|
150
|
1125 *d++ = ch;
|
|
126
|
1126
|
|
|
1127 break;
|
|
|
1128 }
|
|
|
1129
|
|
138
|
1130 /* the invalid quoted character */
|
|
126
|
1131
|
|
|
1132 break;
|
|
|
1133 }
|
|
|
1134 }
|
|
|
1135
|
|
|
1136 done:
|
|
|
1137
|
|
|
1138 *dst = d;
|
|
|
1139 *src = s;
|
|
|
1140 }
|
|
132
|
1141
|
|
|
1142
|
|
|
1143 #if (NGX_MEMCPY_LIMIT)
|
|
|
1144
|
|
|
1145 void *
|
|
|
1146 ngx_memcpy(void *dst, void *src, size_t n)
|
|
|
1147 {
|
|
|
1148 if (n > NGX_MEMCPY_LIMIT) {
|
|
|
1149 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0, "memcpy %uz bytes", n);
|
|
|
1150 ngx_debug_point();
|
|
|
1151 }
|
|
|
1152
|
|
|
1153 return memcpy(dst, src, n);
|
|
|
1154 }
|
|
|
1155
|
|
|
1156 #endif
|
