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6607
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_stream.h>
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11
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12
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13 static ngx_int_t ngx_stream_script_init_arrays(
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14 ngx_stream_script_compile_t *sc);
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15 static ngx_int_t ngx_stream_script_done(ngx_stream_script_compile_t *sc);
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16 static ngx_int_t ngx_stream_script_add_copy_code(
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17 ngx_stream_script_compile_t *sc, ngx_str_t *value, ngx_uint_t last);
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18 static ngx_int_t ngx_stream_script_add_var_code(
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19 ngx_stream_script_compile_t *sc, ngx_str_t *name);
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20 #if (NGX_PCRE)
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21 static ngx_int_t ngx_stream_script_add_capture_code(
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22 ngx_stream_script_compile_t *sc, ngx_uint_t n);
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23 #endif
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24 static ngx_int_t ngx_stream_script_add_full_name_code(
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25 ngx_stream_script_compile_t *sc);
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26 static size_t ngx_stream_script_full_name_len_code(
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27 ngx_stream_script_engine_t *e);
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28 static void ngx_stream_script_full_name_code(ngx_stream_script_engine_t *e);
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29
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30
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31 #define ngx_stream_script_exit (u_char *) &ngx_stream_script_exit_code
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32
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33 static uintptr_t ngx_stream_script_exit_code = (uintptr_t) NULL;
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34
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35
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36 void
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37 ngx_stream_script_flush_complex_value(ngx_stream_session_t *s,
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38 ngx_stream_complex_value_t *val)
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39 {
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40 ngx_uint_t *index;
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41
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42 index = val->flushes;
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43
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44 if (index) {
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45 while (*index != (ngx_uint_t) -1) {
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46
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47 if (s->variables[*index].no_cacheable) {
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48 s->variables[*index].valid = 0;
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49 s->variables[*index].not_found = 0;
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50 }
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51
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52 index++;
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53 }
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54 }
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55 }
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56
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57
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58 ngx_int_t
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59 ngx_stream_complex_value(ngx_stream_session_t *s,
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60 ngx_stream_complex_value_t *val, ngx_str_t *value)
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61 {
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62 size_t len;
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63 ngx_stream_script_code_pt code;
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64 ngx_stream_script_engine_t e;
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65 ngx_stream_script_len_code_pt lcode;
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66
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67 if (val->lengths == NULL) {
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68 *value = val->value;
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69 return NGX_OK;
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70 }
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71
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72 ngx_stream_script_flush_complex_value(s, val);
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73
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74 ngx_memzero(&e, sizeof(ngx_stream_script_engine_t));
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75
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76 e.ip = val->lengths;
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77 e.session = s;
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78 e.flushed = 1;
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79
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80 len = 0;
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81
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82 while (*(uintptr_t *) e.ip) {
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83 lcode = *(ngx_stream_script_len_code_pt *) e.ip;
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84 len += lcode(&e);
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85 }
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86
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87 value->len = len;
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88 value->data = ngx_pnalloc(s->connection->pool, len);
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89 if (value->data == NULL) {
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90 return NGX_ERROR;
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91 }
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92
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93 e.ip = val->values;
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94 e.pos = value->data;
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95 e.buf = *value;
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96
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97 while (*(uintptr_t *) e.ip) {
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98 code = *(ngx_stream_script_code_pt *) e.ip;
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99 code((ngx_stream_script_engine_t *) &e);
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100 }
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101
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102 *value = e.buf;
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103
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104 return NGX_OK;
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105 }
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106
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107
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108 ngx_int_t
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109 ngx_stream_compile_complex_value(ngx_stream_compile_complex_value_t *ccv)
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110 {
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111 ngx_str_t *v;
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112 ngx_uint_t i, n, nv, nc;
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113 ngx_array_t flushes, lengths, values, *pf, *pl, *pv;
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114 ngx_stream_script_compile_t sc;
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115
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116 v = ccv->value;
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117
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118 nv = 0;
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119 nc = 0;
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120
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121 for (i = 0; i < v->len; i++) {
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122 if (v->data[i] == '$') {
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123 if (v->data[i + 1] >= '1' && v->data[i + 1] <= '9') {
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124 nc++;
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125
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126 } else {
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127 nv++;
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128 }
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129 }
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130 }
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131
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132 if ((v->len == 0 || v->data[0] != '$')
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133 && (ccv->conf_prefix || ccv->root_prefix))
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134 {
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135 if (ngx_conf_full_name(ccv->cf->cycle, v, ccv->conf_prefix) != NGX_OK) {
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136 return NGX_ERROR;
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137 }
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138
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139 ccv->conf_prefix = 0;
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140 ccv->root_prefix = 0;
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141 }
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142
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143 ccv->complex_value->value = *v;
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144 ccv->complex_value->flushes = NULL;
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145 ccv->complex_value->lengths = NULL;
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146 ccv->complex_value->values = NULL;
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147
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148 if (nv == 0 && nc == 0) {
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149 return NGX_OK;
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150 }
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151
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152 n = nv + 1;
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153
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154 if (ngx_array_init(&flushes, ccv->cf->pool, n, sizeof(ngx_uint_t))
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155 != NGX_OK)
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156 {
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157 return NGX_ERROR;
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158 }
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159
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160 n = nv * (2 * sizeof(ngx_stream_script_copy_code_t)
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161 + sizeof(ngx_stream_script_var_code_t))
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162 + sizeof(uintptr_t);
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163
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164 if (ngx_array_init(&lengths, ccv->cf->pool, n, 1) != NGX_OK) {
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165 return NGX_ERROR;
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166 }
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167
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168 n = (nv * (2 * sizeof(ngx_stream_script_copy_code_t)
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169 + sizeof(ngx_stream_script_var_code_t))
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170 + sizeof(uintptr_t)
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171 + v->len
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172 + sizeof(uintptr_t) - 1)
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173 & ~(sizeof(uintptr_t) - 1);
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174
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175 if (ngx_array_init(&values, ccv->cf->pool, n, 1) != NGX_OK) {
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176 return NGX_ERROR;
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177 }
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178
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179 pf = &flushes;
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180 pl = &lengths;
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181 pv = &values;
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182
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183 ngx_memzero(&sc, sizeof(ngx_stream_script_compile_t));
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184
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185 sc.cf = ccv->cf;
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186 sc.source = v;
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187 sc.flushes = &pf;
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188 sc.lengths = &pl;
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189 sc.values = &pv;
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190 sc.complete_lengths = 1;
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191 sc.complete_values = 1;
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192 sc.zero = ccv->zero;
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193 sc.conf_prefix = ccv->conf_prefix;
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194 sc.root_prefix = ccv->root_prefix;
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195
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196 if (ngx_stream_script_compile(&sc) != NGX_OK) {
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197 return NGX_ERROR;
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198 }
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199
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200 if (flushes.nelts) {
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201 ccv->complex_value->flushes = flushes.elts;
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202 ccv->complex_value->flushes[flushes.nelts] = (ngx_uint_t) -1;
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203 }
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204
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205 ccv->complex_value->lengths = lengths.elts;
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206 ccv->complex_value->values = values.elts;
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207
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208 return NGX_OK;
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209 }
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210
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211
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212 char *
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213 ngx_stream_set_complex_value_slot(ngx_conf_t *cf, ngx_command_t *cmd,
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214 void *conf)
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215 {
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216 char *p = conf;
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217
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218 ngx_str_t *value;
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219 ngx_stream_complex_value_t **cv;
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220 ngx_stream_compile_complex_value_t ccv;
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221
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222 cv = (ngx_stream_complex_value_t **) (p + cmd->offset);
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223
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224 if (*cv != NULL) {
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225 return "duplicate";
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226 }
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227
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228 *cv = ngx_palloc(cf->pool, sizeof(ngx_stream_complex_value_t));
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229 if (*cv == NULL) {
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230 return NGX_CONF_ERROR;
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231 }
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232
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233 value = cf->args->elts;
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234
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235 ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
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236
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237 ccv.cf = cf;
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238 ccv.value = &value[1];
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239 ccv.complex_value = *cv;
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240
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241 if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
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242 return NGX_CONF_ERROR;
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243 }
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244
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245 return NGX_CONF_OK;
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246 }
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247
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248
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249 ngx_uint_t
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250 ngx_stream_script_variables_count(ngx_str_t *value)
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251 {
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252 ngx_uint_t i, n;
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253
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254 for (n = 0, i = 0; i < value->len; i++) {
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255 if (value->data[i] == '$') {
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256 n++;
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257 }
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258 }
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259
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260 return n;
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261 }
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262
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263
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264 ngx_int_t
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265 ngx_stream_script_compile(ngx_stream_script_compile_t *sc)
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266 {
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267 u_char ch;
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268 ngx_str_t name;
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269 ngx_uint_t i, bracket;
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270
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271 if (ngx_stream_script_init_arrays(sc) != NGX_OK) {
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272 return NGX_ERROR;
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273 }
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274
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275 for (i = 0; i < sc->source->len; /* void */ ) {
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276
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277 name.len = 0;
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278
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279 if (sc->source->data[i] == '$') {
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280
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281 if (++i == sc->source->len) {
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282 goto invalid_variable;
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283 }
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284
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285 #if (NGX_PCRE)
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286 {
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287 ngx_uint_t n;
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288
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289 if (sc->source->data[i] >= '1' && sc->source->data[i] <= '9') {
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290
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291 n = sc->source->data[i] - '0';
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292
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293 if (ngx_stream_script_add_capture_code(sc, n) != NGX_OK) {
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294 return NGX_ERROR;
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295 }
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296
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297 i++;
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298
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299 continue;
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300 }
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301 }
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302 #endif
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303
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304 if (sc->source->data[i] == '{') {
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305 bracket = 1;
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306
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307 if (++i == sc->source->len) {
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308 goto invalid_variable;
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309 }
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310
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311 name.data = &sc->source->data[i];
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312
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313 } else {
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314 bracket = 0;
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315 name.data = &sc->source->data[i];
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316 }
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317
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318 for ( /* void */ ; i < sc->source->len; i++, name.len++) {
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319 ch = sc->source->data[i];
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320
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321 if (ch == '}' && bracket) {
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322 i++;
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323 bracket = 0;
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324 break;
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325 }
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326
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327 if ((ch >= 'A' && ch <= 'Z')
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328 || (ch >= 'a' && ch <= 'z')
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329 || (ch >= '0' && ch <= '9')
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330 || ch == '_')
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331 {
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332 continue;
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333 }
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334
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335 break;
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336 }
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337
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338 if (bracket) {
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339 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0,
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340 "the closing bracket in \"%V\" "
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341 "variable is missing", &name);
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342 return NGX_ERROR;
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343 }
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344
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345 if (name.len == 0) {
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346 goto invalid_variable;
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347 }
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348
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349 sc->variables++;
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350
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351 if (ngx_stream_script_add_var_code(sc, &name) != NGX_OK) {
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352 return NGX_ERROR;
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353 }
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354
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355 continue;
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356 }
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357
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358 name.data = &sc->source->data[i];
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359
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360 while (i < sc->source->len) {
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361
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362 if (sc->source->data[i] == '$') {
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363 break;
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364 }
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365
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366 i++;
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367 name.len++;
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368 }
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369
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370 sc->size += name.len;
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371
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372 if (ngx_stream_script_add_copy_code(sc, &name, (i == sc->source->len))
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373 != NGX_OK)
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374 {
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375 return NGX_ERROR;
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376 }
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377 }
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378
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379 return ngx_stream_script_done(sc);
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380
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381 invalid_variable:
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382
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383 ngx_conf_log_error(NGX_LOG_EMERG, sc->cf, 0, "invalid variable name");
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384
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385 return NGX_ERROR;
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386 }
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387
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388
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389 static ngx_int_t
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390 ngx_stream_script_init_arrays(ngx_stream_script_compile_t *sc)
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391 {
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392 ngx_uint_t n;
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393
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394 if (sc->flushes && *sc->flushes == NULL) {
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395 n = sc->variables ? sc->variables : 1;
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396 *sc->flushes = ngx_array_create(sc->cf->pool, n, sizeof(ngx_uint_t));
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397 if (*sc->flushes == NULL) {
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398 return NGX_ERROR;
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399 }
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400 }
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401
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402 if (*sc->lengths == NULL) {
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403 n = sc->variables * (2 * sizeof(ngx_stream_script_copy_code_t)
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404 + sizeof(ngx_stream_script_var_code_t))
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405 + sizeof(uintptr_t);
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406
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407 *sc->lengths = ngx_array_create(sc->cf->pool, n, 1);
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408 if (*sc->lengths == NULL) {
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409 return NGX_ERROR;
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410 }
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411 }
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412
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413 if (*sc->values == NULL) {
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414 n = (sc->variables * (2 * sizeof(ngx_stream_script_copy_code_t)
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415 + sizeof(ngx_stream_script_var_code_t))
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416 + sizeof(uintptr_t)
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417 + sc->source->len
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418 + sizeof(uintptr_t) - 1)
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419 & ~(sizeof(uintptr_t) - 1);
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420
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421 *sc->values = ngx_array_create(sc->cf->pool, n, 1);
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422 if (*sc->values == NULL) {
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423 return NGX_ERROR;
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424 }
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425 }
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426
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427 sc->variables = 0;
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428
|
|
|
429 return NGX_OK;
|
|
|
430 }
|
|
|
431
|
|
|
432
|
|
|
433 static ngx_int_t
|
|
|
434 ngx_stream_script_done(ngx_stream_script_compile_t *sc)
|
|
|
435 {
|
|
|
436 ngx_str_t zero;
|
|
|
437 uintptr_t *code;
|
|
|
438
|
|
|
439 if (sc->zero) {
|
|
|
440
|
|
|
441 zero.len = 1;
|
|
|
442 zero.data = (u_char *) "\0";
|
|
|
443
|
|
|
444 if (ngx_stream_script_add_copy_code(sc, &zero, 0) != NGX_OK) {
|
|
|
445 return NGX_ERROR;
|
|
|
446 }
|
|
|
447 }
|
|
|
448
|
|
|
449 if (sc->conf_prefix || sc->root_prefix) {
|
|
|
450 if (ngx_stream_script_add_full_name_code(sc) != NGX_OK) {
|
|
|
451 return NGX_ERROR;
|
|
|
452 }
|
|
|
453 }
|
|
|
454
|
|
|
455 if (sc->complete_lengths) {
|
|
|
456 code = ngx_stream_script_add_code(*sc->lengths, sizeof(uintptr_t),
|
|
|
457 NULL);
|
|
|
458 if (code == NULL) {
|
|
|
459 return NGX_ERROR;
|
|
|
460 }
|
|
|
461
|
|
|
462 *code = (uintptr_t) NULL;
|
|
|
463 }
|
|
|
464
|
|
|
465 if (sc->complete_values) {
|
|
|
466 code = ngx_stream_script_add_code(*sc->values, sizeof(uintptr_t),
|
|
|
467 &sc->main);
|
|
|
468 if (code == NULL) {
|
|
|
469 return NGX_ERROR;
|
|
|
470 }
|
|
|
471
|
|
|
472 *code = (uintptr_t) NULL;
|
|
|
473 }
|
|
|
474
|
|
|
475 return NGX_OK;
|
|
|
476 }
|
|
|
477
|
|
|
478
|
|
|
479 void *
|
|
|
480 ngx_stream_script_add_code(ngx_array_t *codes, size_t size, void *code)
|
|
|
481 {
|
|
|
482 u_char *elts, **p;
|
|
|
483 void *new;
|
|
|
484
|
|
|
485 elts = codes->elts;
|
|
|
486
|
|
|
487 new = ngx_array_push_n(codes, size);
|
|
|
488 if (new == NULL) {
|
|
|
489 return NULL;
|
|
|
490 }
|
|
|
491
|
|
|
492 if (code) {
|
|
|
493 if (elts != codes->elts) {
|
|
|
494 p = code;
|
|
|
495 *p += (u_char *) codes->elts - elts;
|
|
|
496 }
|
|
|
497 }
|
|
|
498
|
|
|
499 return new;
|
|
|
500 }
|
|
|
501
|
|
|
502
|
|
|
503 static ngx_int_t
|
|
|
504 ngx_stream_script_add_copy_code(ngx_stream_script_compile_t *sc,
|
|
|
505 ngx_str_t *value, ngx_uint_t last)
|
|
|
506 {
|
|
|
507 u_char *p;
|
|
|
508 size_t size, len, zero;
|
|
|
509 ngx_stream_script_copy_code_t *code;
|
|
|
510
|
|
|
511 zero = (sc->zero && last);
|
|
|
512 len = value->len + zero;
|
|
|
513
|
|
|
514 code = ngx_stream_script_add_code(*sc->lengths,
|
|
|
515 sizeof(ngx_stream_script_copy_code_t),
|
|
|
516 NULL);
|
|
|
517 if (code == NULL) {
|
|
|
518 return NGX_ERROR;
|
|
|
519 }
|
|
|
520
|
|
|
521 code->code = (ngx_stream_script_code_pt) ngx_stream_script_copy_len_code;
|
|
|
522 code->len = len;
|
|
|
523
|
|
|
524 size = (sizeof(ngx_stream_script_copy_code_t) + len + sizeof(uintptr_t) - 1)
|
|
|
525 & ~(sizeof(uintptr_t) - 1);
|
|
|
526
|
|
|
527 code = ngx_stream_script_add_code(*sc->values, size, &sc->main);
|
|
|
528 if (code == NULL) {
|
|
|
529 return NGX_ERROR;
|
|
|
530 }
|
|
|
531
|
|
|
532 code->code = ngx_stream_script_copy_code;
|
|
|
533 code->len = len;
|
|
|
534
|
|
|
535 p = ngx_cpymem((u_char *) code + sizeof(ngx_stream_script_copy_code_t),
|
|
|
536 value->data, value->len);
|
|
|
537
|
|
|
538 if (zero) {
|
|
|
539 *p = '\0';
|
|
|
540 sc->zero = 0;
|
|
|
541 }
|
|
|
542
|
|
|
543 return NGX_OK;
|
|
|
544 }
|
|
|
545
|
|
|
546
|
|
|
547 size_t
|
|
|
548 ngx_stream_script_copy_len_code(ngx_stream_script_engine_t *e)
|
|
|
549 {
|
|
|
550 ngx_stream_script_copy_code_t *code;
|
|
|
551
|
|
|
552 code = (ngx_stream_script_copy_code_t *) e->ip;
|
|
|
553
|
|
|
554 e->ip += sizeof(ngx_stream_script_copy_code_t);
|
|
|
555
|
|
|
556 return code->len;
|
|
|
557 }
|
|
|
558
|
|
|
559
|
|
|
560 void
|
|
|
561 ngx_stream_script_copy_code(ngx_stream_script_engine_t *e)
|
|
|
562 {
|
|
|
563 u_char *p;
|
|
|
564 ngx_stream_script_copy_code_t *code;
|
|
|
565
|
|
|
566 code = (ngx_stream_script_copy_code_t *) e->ip;
|
|
|
567
|
|
|
568 p = e->pos;
|
|
|
569
|
|
|
570 if (!e->skip) {
|
|
|
571 e->pos = ngx_copy(p, e->ip + sizeof(ngx_stream_script_copy_code_t),
|
|
|
572 code->len);
|
|
|
573 }
|
|
|
574
|
|
|
575 e->ip += sizeof(ngx_stream_script_copy_code_t)
|
|
|
576 + ((code->len + sizeof(uintptr_t) - 1) & ~(sizeof(uintptr_t) - 1));
|
|
|
577
|
|
|
578 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0,
|
|
|
579 "stream script copy: \"%*s\"", e->pos - p, p);
|
|
|
580 }
|
|
|
581
|
|
|
582
|
|
|
583 static ngx_int_t
|
|
|
584 ngx_stream_script_add_var_code(ngx_stream_script_compile_t *sc, ngx_str_t *name)
|
|
|
585 {
|
|
|
586 ngx_int_t index, *p;
|
|
|
587 ngx_stream_script_var_code_t *code;
|
|
|
588
|
|
|
589 index = ngx_stream_get_variable_index(sc->cf, name);
|
|
|
590
|
|
|
591 if (index == NGX_ERROR) {
|
|
|
592 return NGX_ERROR;
|
|
|
593 }
|
|
|
594
|
|
|
595 if (sc->flushes) {
|
|
|
596 p = ngx_array_push(*sc->flushes);
|
|
|
597 if (p == NULL) {
|
|
|
598 return NGX_ERROR;
|
|
|
599 }
|
|
|
600
|
|
|
601 *p = index;
|
|
|
602 }
|
|
|
603
|
|
|
604 code = ngx_stream_script_add_code(*sc->lengths,
|
|
|
605 sizeof(ngx_stream_script_var_code_t),
|
|
|
606 NULL);
|
|
|
607 if (code == NULL) {
|
|
|
608 return NGX_ERROR;
|
|
|
609 }
|
|
|
610
|
|
|
611 code->code = (ngx_stream_script_code_pt)
|
|
|
612 ngx_stream_script_copy_var_len_code;
|
|
|
613 code->index = (uintptr_t) index;
|
|
|
614
|
|
|
615 code = ngx_stream_script_add_code(*sc->values,
|
|
|
616 sizeof(ngx_stream_script_var_code_t),
|
|
|
617 &sc->main);
|
|
|
618 if (code == NULL) {
|
|
|
619 return NGX_ERROR;
|
|
|
620 }
|
|
|
621
|
|
|
622 code->code = ngx_stream_script_copy_var_code;
|
|
|
623 code->index = (uintptr_t) index;
|
|
|
624
|
|
|
625 return NGX_OK;
|
|
|
626 }
|
|
|
627
|
|
|
628
|
|
|
629 size_t
|
|
|
630 ngx_stream_script_copy_var_len_code(ngx_stream_script_engine_t *e)
|
|
|
631 {
|
|
|
632 ngx_stream_variable_value_t *value;
|
|
|
633 ngx_stream_script_var_code_t *code;
|
|
|
634
|
|
|
635 code = (ngx_stream_script_var_code_t *) e->ip;
|
|
|
636
|
|
|
637 e->ip += sizeof(ngx_stream_script_var_code_t);
|
|
|
638
|
|
|
639 if (e->flushed) {
|
|
|
640 value = ngx_stream_get_indexed_variable(e->session, code->index);
|
|
|
641
|
|
|
642 } else {
|
|
|
643 value = ngx_stream_get_flushed_variable(e->session, code->index);
|
|
|
644 }
|
|
|
645
|
|
|
646 if (value && !value->not_found) {
|
|
|
647 return value->len;
|
|
|
648 }
|
|
|
649
|
|
|
650 return 0;
|
|
|
651 }
|
|
|
652
|
|
|
653
|
|
|
654 void
|
|
|
655 ngx_stream_script_copy_var_code(ngx_stream_script_engine_t *e)
|
|
|
656 {
|
|
|
657 u_char *p;
|
|
|
658 ngx_stream_variable_value_t *value;
|
|
|
659 ngx_stream_script_var_code_t *code;
|
|
|
660
|
|
|
661 code = (ngx_stream_script_var_code_t *) e->ip;
|
|
|
662
|
|
|
663 e->ip += sizeof(ngx_stream_script_var_code_t);
|
|
|
664
|
|
|
665 if (!e->skip) {
|
|
|
666
|
|
|
667 if (e->flushed) {
|
|
|
668 value = ngx_stream_get_indexed_variable(e->session, code->index);
|
|
|
669
|
|
|
670 } else {
|
|
|
671 value = ngx_stream_get_flushed_variable(e->session, code->index);
|
|
|
672 }
|
|
|
673
|
|
|
674 if (value && !value->not_found) {
|
|
|
675 p = e->pos;
|
|
|
676 e->pos = ngx_copy(p, value->data, value->len);
|
|
|
677
|
|
|
678 ngx_log_debug2(NGX_LOG_DEBUG_STREAM,
|
|
|
679 e->session->connection->log, 0,
|
|
|
680 "stream script var: \"%*s\"", e->pos - p, p);
|
|
|
681 }
|
|
|
682 }
|
|
|
683 }
|
|
|
684
|
|
|
685
|
|
|
686 #if (NGX_PCRE)
|
|
|
687
|
|
|
688 static ngx_int_t
|
|
|
689 ngx_stream_script_add_capture_code(ngx_stream_script_compile_t *sc,
|
|
|
690 ngx_uint_t n)
|
|
|
691 {
|
|
|
692 ngx_stream_script_copy_capture_code_t *code;
|
|
|
693
|
|
|
694 code = ngx_stream_script_add_code(*sc->lengths,
|
|
|
695 sizeof(ngx_stream_script_copy_capture_code_t),
|
|
|
696 NULL);
|
|
|
697 if (code == NULL) {
|
|
|
698 return NGX_ERROR;
|
|
|
699 }
|
|
|
700
|
|
|
701 code->code = (ngx_stream_script_code_pt)
|
|
|
702 ngx_stream_script_copy_capture_len_code;
|
|
|
703 code->n = 2 * n;
|
|
|
704
|
|
|
705
|
|
|
706 code = ngx_stream_script_add_code(*sc->values,
|
|
|
707 sizeof(ngx_stream_script_copy_capture_code_t),
|
|
|
708 &sc->main);
|
|
|
709 if (code == NULL) {
|
|
|
710 return NGX_ERROR;
|
|
|
711 }
|
|
|
712
|
|
|
713 code->code = ngx_stream_script_copy_capture_code;
|
|
|
714 code->n = 2 * n;
|
|
|
715
|
|
|
716 if (sc->ncaptures < n) {
|
|
|
717 sc->ncaptures = n;
|
|
|
718 }
|
|
|
719
|
|
|
720 return NGX_OK;
|
|
|
721 }
|
|
|
722
|
|
|
723
|
|
|
724 size_t
|
|
|
725 ngx_stream_script_copy_capture_len_code(ngx_stream_script_engine_t *e)
|
|
|
726 {
|
|
|
727 int *cap;
|
|
|
728 ngx_uint_t n;
|
|
|
729 ngx_stream_session_t *s;
|
|
|
730 ngx_stream_script_copy_capture_code_t *code;
|
|
|
731
|
|
|
732 s = e->session;
|
|
|
733
|
|
|
734 code = (ngx_stream_script_copy_capture_code_t *) e->ip;
|
|
|
735
|
|
|
736 e->ip += sizeof(ngx_stream_script_copy_capture_code_t);
|
|
|
737
|
|
|
738 n = code->n;
|
|
|
739
|
|
|
740 if (n < s->ncaptures) {
|
|
|
741 cap = s->captures;
|
|
|
742 return cap[n + 1] - cap[n];
|
|
|
743 }
|
|
|
744
|
|
|
745 return 0;
|
|
|
746 }
|
|
|
747
|
|
|
748
|
|
|
749 void
|
|
|
750 ngx_stream_script_copy_capture_code(ngx_stream_script_engine_t *e)
|
|
|
751 {
|
|
|
752 int *cap;
|
|
|
753 u_char *p, *pos;
|
|
|
754 ngx_uint_t n;
|
|
|
755 ngx_stream_session_t *s;
|
|
|
756 ngx_stream_script_copy_capture_code_t *code;
|
|
|
757
|
|
|
758 s = e->session;
|
|
|
759
|
|
|
760 code = (ngx_stream_script_copy_capture_code_t *) e->ip;
|
|
|
761
|
|
|
762 e->ip += sizeof(ngx_stream_script_copy_capture_code_t);
|
|
|
763
|
|
|
764 n = code->n;
|
|
|
765
|
|
|
766 pos = e->pos;
|
|
|
767
|
|
|
768 if (n < s->ncaptures) {
|
|
|
769 cap = s->captures;
|
|
|
770 p = s->captures_data;
|
|
|
771 e->pos = ngx_copy(pos, &p[cap[n]], cap[n + 1] - cap[n]);
|
|
|
772 }
|
|
|
773
|
|
|
774 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0,
|
|
|
775 "stream script capture: \"%*s\"", e->pos - pos, pos);
|
|
|
776 }
|
|
|
777
|
|
|
778 #endif
|
|
|
779
|
|
|
780
|
|
|
781 static ngx_int_t
|
|
|
782 ngx_stream_script_add_full_name_code(ngx_stream_script_compile_t *sc)
|
|
|
783 {
|
|
|
784 ngx_stream_script_full_name_code_t *code;
|
|
|
785
|
|
|
786 code = ngx_stream_script_add_code(*sc->lengths,
|
|
|
787 sizeof(ngx_stream_script_full_name_code_t),
|
|
|
788 NULL);
|
|
|
789 if (code == NULL) {
|
|
|
790 return NGX_ERROR;
|
|
|
791 }
|
|
|
792
|
|
|
793 code->code = (ngx_stream_script_code_pt)
|
|
|
794 ngx_stream_script_full_name_len_code;
|
|
|
795 code->conf_prefix = sc->conf_prefix;
|
|
|
796
|
|
|
797 code = ngx_stream_script_add_code(*sc->values,
|
|
|
798 sizeof(ngx_stream_script_full_name_code_t), &sc->main);
|
|
|
799 if (code == NULL) {
|
|
|
800 return NGX_ERROR;
|
|
|
801 }
|
|
|
802
|
|
|
803 code->code = ngx_stream_script_full_name_code;
|
|
|
804 code->conf_prefix = sc->conf_prefix;
|
|
|
805
|
|
|
806 return NGX_OK;
|
|
|
807 }
|
|
|
808
|
|
|
809
|
|
|
810 static size_t
|
|
|
811 ngx_stream_script_full_name_len_code(ngx_stream_script_engine_t *e)
|
|
|
812 {
|
|
|
813 ngx_stream_script_full_name_code_t *code;
|
|
|
814
|
|
|
815 code = (ngx_stream_script_full_name_code_t *) e->ip;
|
|
|
816
|
|
|
817 e->ip += sizeof(ngx_stream_script_full_name_code_t);
|
|
|
818
|
|
|
819 return code->conf_prefix ? ngx_cycle->conf_prefix.len:
|
|
|
820 ngx_cycle->prefix.len;
|
|
|
821 }
|
|
|
822
|
|
|
823
|
|
|
824 static void
|
|
|
825 ngx_stream_script_full_name_code(ngx_stream_script_engine_t *e)
|
|
|
826 {
|
|
|
827 ngx_stream_script_full_name_code_t *code;
|
|
|
828
|
|
|
829 ngx_str_t value, *prefix;
|
|
|
830
|
|
|
831 code = (ngx_stream_script_full_name_code_t *) e->ip;
|
|
|
832
|
|
|
833 value.data = e->buf.data;
|
|
|
834 value.len = e->pos - e->buf.data;
|
|
|
835
|
|
|
836 prefix = code->conf_prefix ? (ngx_str_t *) &ngx_cycle->conf_prefix:
|
|
|
837 (ngx_str_t *) &ngx_cycle->prefix;
|
|
|
838
|
|
|
839 if (ngx_get_full_name(e->session->connection->pool, prefix, &value)
|
|
|
840 != NGX_OK)
|
|
|
841 {
|
|
|
842 e->ip = ngx_stream_script_exit;
|
|
|
843 return;
|
|
|
844 }
|
|
|
845
|
|
|
846 e->buf = value;
|
|
|
847
|
|
|
848 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, e->session->connection->log, 0,
|
|
|
849 "stream script fullname: \"%V\"", &value);
|
|
|
850
|
|
|
851 e->ip += sizeof(ngx_stream_script_full_name_code_t);
|
|
|
852 }
|
