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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 #include <ngx_http.h>
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10
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11 #include <zlib.h>
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12
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13
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14 typedef struct {
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15 ngx_flag_t enable;
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16 ngx_flag_t no_buffer;
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17
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2
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18 ngx_array_t *types; /* array of ngx_http_gzip_type_t */
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19
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0
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20 ngx_bufs_t bufs;
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21
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22 ngx_uint_t http_version;
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23 ngx_uint_t proxied;
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24
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25 int level;
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26 size_t wbits;
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27 size_t memlevel;
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28 ssize_t min_length;
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29 } ngx_http_gzip_conf_t;
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30
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31
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2
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32 typedef struct {
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33 ngx_str_t name;
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34 ngx_uint_t enable;
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35 } ngx_http_gzip_type_t;
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36
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37
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0
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38 #define NGX_HTTP_GZIP_PROXIED_OFF 0x0002
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39 #define NGX_HTTP_GZIP_PROXIED_EXPIRED 0x0004
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40 #define NGX_HTTP_GZIP_PROXIED_NO_CACHE 0x0008
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41 #define NGX_HTTP_GZIP_PROXIED_NO_STORE 0x0010
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42 #define NGX_HTTP_GZIP_PROXIED_PRIVATE 0x0020
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43 #define NGX_HTTP_GZIP_PROXIED_NO_LM 0x0040
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44 #define NGX_HTTP_GZIP_PROXIED_NO_ETAG 0x0080
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45 #define NGX_HTTP_GZIP_PROXIED_AUTH 0x0100
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46 #define NGX_HTTP_GZIP_PROXIED_ANY 0x0200
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47
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48
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49 typedef struct {
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50 ngx_chain_t *in;
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51 ngx_chain_t *free;
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52 ngx_chain_t *busy;
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53 ngx_chain_t *out;
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54 ngx_chain_t **last_out;
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55 ngx_buf_t *in_buf;
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56 ngx_buf_t *out_buf;
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57 ngx_int_t bufs;
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58
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59 off_t length;
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60
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61 void *preallocated;
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62 char *free_mem;
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63 ngx_uint_t allocated;
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64
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65 unsigned flush:4;
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66 unsigned redo:1;
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67 unsigned done:1;
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68
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69 size_t zin;
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70 size_t zout;
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71
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72 uint32_t crc32;
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73 z_stream zstream;
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74 ngx_http_request_t *request;
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75 } ngx_http_gzip_ctx_t;
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76
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77
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78 static ngx_int_t ngx_http_gzip_proxied(ngx_http_request_t *r,
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46
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79 ngx_http_gzip_conf_t *conf);
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0
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80 static void *ngx_http_gzip_filter_alloc(void *opaque, u_int items,
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46
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81 u_int size);
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0
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82 static void ngx_http_gzip_filter_free(void *opaque, void *address);
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28
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83 static void ngx_http_gzip_error(ngx_http_gzip_ctx_t *ctx);
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0
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84
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85 static u_char *ngx_http_gzip_log_ratio(ngx_http_request_t *r, u_char *buf,
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46
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86 ngx_http_log_op_t *op);
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0
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87
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28
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88 static ngx_int_t ngx_http_gzip_add_log_formats(ngx_conf_t *cf);
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89
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0
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90 static ngx_int_t ngx_http_gzip_filter_init(ngx_cycle_t *cycle);
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91 static void *ngx_http_gzip_create_conf(ngx_conf_t *cf);
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92 static char *ngx_http_gzip_merge_conf(ngx_conf_t *cf,
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46
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93 void *parent, void *child);
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2
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94 static char *ngx_http_gzip_set_types(ngx_conf_t *cf, ngx_command_t *cmd,
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46
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95 void *conf);
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0
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96 static char *ngx_http_gzip_set_window(ngx_conf_t *cf, void *post, void *data);
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97 static char *ngx_http_gzip_set_hash(ngx_conf_t *cf, void *post, void *data);
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98
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99
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100 static ngx_conf_num_bounds_t ngx_http_gzip_comp_level_bounds = {
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101 ngx_conf_check_num_bounds, 1, 9
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102 };
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103
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104 static ngx_conf_post_handler_pt ngx_http_gzip_set_window_p =
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105 ngx_http_gzip_set_window;
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106 static ngx_conf_post_handler_pt ngx_http_gzip_set_hash_p =
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107 ngx_http_gzip_set_hash;
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108
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109
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110
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111 static ngx_conf_enum_t ngx_http_gzip_http_version[] = {
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112 { ngx_string("1.0"), NGX_HTTP_VERSION_10 },
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113 { ngx_string("1.1"), NGX_HTTP_VERSION_11 },
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114 { ngx_null_string, 0 }
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115 };
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116
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117
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118 static ngx_conf_bitmask_t ngx_http_gzip_proxied_mask[] = {
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119 { ngx_string("off"), NGX_HTTP_GZIP_PROXIED_OFF },
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120 { ngx_string("expired"), NGX_HTTP_GZIP_PROXIED_EXPIRED },
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121 { ngx_string("no-cache"), NGX_HTTP_GZIP_PROXIED_NO_CACHE },
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122 { ngx_string("no-store"), NGX_HTTP_GZIP_PROXIED_NO_STORE },
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123 { ngx_string("private"), NGX_HTTP_GZIP_PROXIED_PRIVATE },
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124 { ngx_string("no_last_modified"), NGX_HTTP_GZIP_PROXIED_NO_LM },
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125 { ngx_string("no_etag"), NGX_HTTP_GZIP_PROXIED_NO_ETAG },
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126 { ngx_string("auth"), NGX_HTTP_GZIP_PROXIED_AUTH },
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127 { ngx_string("any"), NGX_HTTP_GZIP_PROXIED_ANY },
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128 { ngx_null_string, 0 }
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129 };
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130
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131
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132 static ngx_command_t ngx_http_gzip_filter_commands[] = {
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133
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134 { ngx_string("gzip"),
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34
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135 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
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136 |NGX_CONF_FLAG,
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0
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137 ngx_conf_set_flag_slot,
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138 NGX_HTTP_LOC_CONF_OFFSET,
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139 offsetof(ngx_http_gzip_conf_t, enable),
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140 NULL },
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141
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142 { ngx_string("gzip_buffers"),
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143 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,
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144 ngx_conf_set_bufs_slot,
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145 NGX_HTTP_LOC_CONF_OFFSET,
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146 offsetof(ngx_http_gzip_conf_t, bufs),
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147 NULL },
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148
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2
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149 { ngx_string("gzip_types"),
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150 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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151 ngx_http_gzip_set_types,
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152 NGX_HTTP_LOC_CONF_OFFSET,
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153 0,
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154 NULL },
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155
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0
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156 { ngx_string("gzip_comp_level"),
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157 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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158 ngx_conf_set_num_slot,
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159 NGX_HTTP_LOC_CONF_OFFSET,
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160 offsetof(ngx_http_gzip_conf_t, level),
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161 &ngx_http_gzip_comp_level_bounds },
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162
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163 { ngx_string("gzip_window"),
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164 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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165 ngx_conf_set_size_slot,
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166 NGX_HTTP_LOC_CONF_OFFSET,
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167 offsetof(ngx_http_gzip_conf_t, wbits),
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168 &ngx_http_gzip_set_window_p },
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169
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170 { ngx_string("gzip_hash"),
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171 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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172 ngx_conf_set_size_slot,
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173 NGX_HTTP_LOC_CONF_OFFSET,
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174 offsetof(ngx_http_gzip_conf_t, memlevel),
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175 &ngx_http_gzip_set_hash_p },
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176
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177 { ngx_string("gzip_no_buffer"),
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178 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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179 ngx_conf_set_flag_slot,
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180 NGX_HTTP_LOC_CONF_OFFSET,
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181 offsetof(ngx_http_gzip_conf_t, no_buffer),
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182 NULL },
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183
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184 { ngx_string("gzip_http_version"),
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185 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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186 ngx_conf_set_enum_slot,
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187 NGX_HTTP_LOC_CONF_OFFSET,
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188 offsetof(ngx_http_gzip_conf_t, http_version),
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189 &ngx_http_gzip_http_version },
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190
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191 { ngx_string("gzip_proxied"),
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192 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_ANY,
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193 ngx_conf_set_bitmask_slot,
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194 NGX_HTTP_LOC_CONF_OFFSET,
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195 offsetof(ngx_http_gzip_conf_t, proxied),
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196 &ngx_http_gzip_proxied_mask },
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197
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198 { ngx_string("gzip_min_length"),
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199 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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200 ngx_conf_set_size_slot,
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201 NGX_HTTP_LOC_CONF_OFFSET,
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202 offsetof(ngx_http_gzip_conf_t, min_length),
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203 NULL },
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204
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205 ngx_null_command
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206 };
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207
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208
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209 static ngx_http_module_t ngx_http_gzip_filter_module_ctx = {
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28
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210 ngx_http_gzip_add_log_formats, /* pre conf */
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0
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211
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212 NULL, /* create main configuration */
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213 NULL, /* init main configuration */
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214
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215 NULL, /* create server configuration */
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216 NULL, /* merge server configuration */
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217
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218 ngx_http_gzip_create_conf, /* create location configuration */
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38
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219 ngx_http_gzip_merge_conf /* merge location configuration */
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0
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220 };
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221
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222
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223 ngx_module_t ngx_http_gzip_filter_module = {
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224 NGX_MODULE,
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225 &ngx_http_gzip_filter_module_ctx, /* module context */
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226 ngx_http_gzip_filter_commands, /* module directives */
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227 NGX_HTTP_MODULE, /* module type */
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228 ngx_http_gzip_filter_init, /* init module */
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2
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229 NULL /* init process */
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0
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230 };
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231
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232
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233 static ngx_http_log_op_name_t ngx_http_gzip_log_fmt_ops[] = {
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28
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234 { ngx_string("gzip_ratio"), NGX_INT32_LEN + 3,
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235 NULL, NULL, ngx_http_gzip_log_ratio },
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236 { ngx_null_string, 0, NULL, NULL, NULL }
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0
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237 };
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238
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239
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240
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241 static u_char gzheader[10] = { 0x1f, 0x8b, Z_DEFLATED, 0, 0, 0, 0, 0, 0, 3 };
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242
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28
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243 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
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0
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244
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245 struct gztrailer {
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246 uint32_t crc32;
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247 uint32_t zlen;
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248 };
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249
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28
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250 #else /* NGX_HAVE_BIG_ENDIAN || !NGX_HAVE_NONALIGNED */
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0
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251
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252 struct gztrailer {
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253 u_char crc32[4];
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254 u_char zlen[4];
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255 };
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256
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257 #endif
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258
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259
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260 static ngx_http_output_header_filter_pt ngx_http_next_header_filter;
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261 static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
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262
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263
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46
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264 static ngx_int_t
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265 ngx_http_gzip_header_filter(ngx_http_request_t *r)
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0
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266 {
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2
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267 ngx_uint_t i, found;
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0
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268 ngx_http_gzip_ctx_t *ctx;
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269 ngx_http_gzip_conf_t *conf;
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2
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270 ngx_http_gzip_type_t *type;
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0
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271
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272 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
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273
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274 if (!conf->enable
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2
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275 || (r->headers_out.status != NGX_HTTP_OK
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276 && r->headers_out.status != NGX_HTTP_FORBIDDEN
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277 && r->headers_out.status != NGX_HTTP_NOT_FOUND)
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0
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278 || r->header_only
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279 || r->http_version < conf->http_version
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2
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280 || r->headers_out.content_type == NULL
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0
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281 || (r->headers_out.content_encoding
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282 && r->headers_out.content_encoding->value.len)
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283 || r->headers_in.accept_encoding == NULL
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284 || (r->headers_out.content_length_n != -1
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285 && r->headers_out.content_length_n < conf->min_length)
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286 || ngx_strstr(r->headers_in.accept_encoding->value.data, "gzip") == NULL
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287 )
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288 {
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289 return ngx_http_next_header_filter(r);
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290 }
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291
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2
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292
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293 found = 0;
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294 type = conf->types->elts;
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295
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296 for (i = 0; i < conf->types->nelts; i++) {
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297 if (r->headers_out.content_type->value.len >= type[i].name.len
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298 && ngx_strncasecmp(r->headers_out.content_type->value.data,
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299 type[i].name.data, type[i].name.len) == 0)
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300 {
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301 found = 1;
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302 break;
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303 }
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304 }
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305
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306 if (!found) {
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0
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307 return ngx_http_next_header_filter(r);
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308 }
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309
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310
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311 if (r->headers_in.via) {
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312 if (conf->proxied & NGX_HTTP_GZIP_PROXIED_OFF) {
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313 return ngx_http_next_header_filter(r);
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314 }
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315
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316 if (!(conf->proxied & NGX_HTTP_GZIP_PROXIED_ANY)
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317 && ngx_http_gzip_proxied(r, conf) == NGX_DECLINED)
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318 {
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319 return ngx_http_next_header_filter(r);
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320 }
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321 }
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322
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323
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324 /*
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325 * if the URL (without the "http://" prefix) is longer than 253 bytes
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326 * then MSIE 4.x can not handle the compressed stream - it waits too long,
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327 * hangs up or crashes
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328 */
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329
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330 if (r->headers_in.msie4 && r->unparsed_uri.len > 200) {
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331 return ngx_http_next_header_filter(r);
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332 }
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333
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334
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335 ngx_http_create_ctx(r, ctx, ngx_http_gzip_filter_module,
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336 sizeof(ngx_http_gzip_ctx_t), NGX_ERROR);
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337 ctx->request = r;
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338
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339 r->headers_out.content_encoding = ngx_list_push(&r->headers_out.headers);
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340 if (r->headers_out.content_encoding == NULL) {
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341 return NGX_ERROR;
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342 }
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343
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344 r->headers_out.content_encoding->key.len = sizeof("Content-Encoding") - 1;
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345 r->headers_out.content_encoding->key.data = (u_char *) "Content-Encoding";
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346 r->headers_out.content_encoding->value.len = sizeof("gzip") - 1;
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347 r->headers_out.content_encoding->value.data = (u_char *) "gzip";
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348
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349 ctx->length = r->headers_out.content_length_n;
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350 r->headers_out.content_length_n = -1;
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351 if (r->headers_out.content_length) {
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352 r->headers_out.content_length->key.len = 0;
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353 r->headers_out.content_length = NULL;
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354 }
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355 r->filter_need_in_memory = 1;
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356
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357 return ngx_http_next_header_filter(r);
|
|
|
358 }
|
|
|
359
|
|
|
360
|
|
46
|
361 static ngx_int_t
|
|
|
362 ngx_http_gzip_proxied(ngx_http_request_t *r, ngx_http_gzip_conf_t *conf)
|
|
0
|
363 {
|
|
|
364 time_t date, expires;
|
|
|
365
|
|
|
366 if (r->headers_in.authorization
|
|
|
367 && (conf->proxied & NGX_HTTP_GZIP_PROXIED_AUTH))
|
|
|
368 {
|
|
|
369 return NGX_OK;
|
|
|
370 }
|
|
|
371
|
|
|
372 if (r->headers_out.expires) {
|
|
|
373
|
|
|
374 if (!(conf->proxied & NGX_HTTP_GZIP_PROXIED_EXPIRED)) {
|
|
|
375 return NGX_DECLINED;
|
|
|
376 }
|
|
|
377
|
|
|
378 expires = ngx_http_parse_time(r->headers_out.expires->value.data,
|
|
|
379 r->headers_out.expires->value.len);
|
|
|
380 if (expires == NGX_ERROR) {
|
|
|
381 return NGX_DECLINED;
|
|
|
382 }
|
|
|
383
|
|
|
384 if (r->headers_out.date) {
|
|
|
385 date = ngx_http_parse_time(r->headers_out.date->value.data,
|
|
|
386 r->headers_out.date->value.len);
|
|
|
387 if (date == NGX_ERROR) {
|
|
|
388 return NGX_DECLINED;
|
|
|
389 }
|
|
|
390
|
|
|
391 } else {
|
|
|
392 date = ngx_time();
|
|
|
393 }
|
|
|
394
|
|
|
395 if (expires < date) {
|
|
|
396 return NGX_OK;
|
|
|
397 }
|
|
|
398
|
|
|
399 return NGX_DECLINED;
|
|
|
400 }
|
|
|
401
|
|
|
402 if (r->headers_out.cache_control) {
|
|
|
403
|
|
|
404 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_CACHE)
|
|
|
405 && ngx_strstr(r->headers_out.cache_control->value.data, "no-cache"))
|
|
|
406 {
|
|
|
407 return NGX_OK;
|
|
|
408 }
|
|
|
409
|
|
|
410 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_STORE)
|
|
|
411 && ngx_strstr(r->headers_out.cache_control->value.data, "no-store"))
|
|
|
412 {
|
|
|
413 return NGX_OK;
|
|
|
414 }
|
|
|
415
|
|
|
416 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_PRIVATE)
|
|
|
417 && ngx_strstr(r->headers_out.cache_control->value.data, "private"))
|
|
|
418 {
|
|
|
419 return NGX_OK;
|
|
|
420 }
|
|
|
421
|
|
|
422 return NGX_DECLINED;
|
|
|
423 }
|
|
|
424
|
|
|
425 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_LM)
|
|
|
426 && r->headers_out.last_modified)
|
|
|
427 {
|
|
|
428 return NGX_DECLINED;
|
|
|
429 }
|
|
|
430
|
|
|
431 if ((conf->proxied & NGX_HTTP_GZIP_PROXIED_NO_ETAG)
|
|
|
432 && r->headers_out.etag)
|
|
|
433 {
|
|
|
434 return NGX_DECLINED;
|
|
|
435 }
|
|
|
436
|
|
|
437 return NGX_OK;
|
|
|
438 }
|
|
|
439
|
|
|
440
|
|
46
|
441 static ngx_int_t
|
|
|
442 ngx_http_gzip_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
|
|
0
|
443 {
|
|
18
|
444 int rc, wbits, memlevel;
|
|
|
445 ngx_int_t last;
|
|
0
|
446 struct gztrailer *trailer;
|
|
|
447 ngx_buf_t *b;
|
|
|
448 ngx_chain_t *cl;
|
|
|
449 ngx_http_gzip_ctx_t *ctx;
|
|
|
450 ngx_http_gzip_conf_t *conf;
|
|
|
451
|
|
|
452 ctx = ngx_http_get_module_ctx(r, ngx_http_gzip_filter_module);
|
|
|
453
|
|
|
454 if (ctx == NULL || ctx->done) {
|
|
|
455 return ngx_http_next_body_filter(r, in);
|
|
|
456 }
|
|
|
457
|
|
|
458 conf = ngx_http_get_module_loc_conf(r, ngx_http_gzip_filter_module);
|
|
|
459
|
|
|
460 if (ctx->preallocated == NULL) {
|
|
|
461 wbits = conf->wbits;
|
|
|
462 memlevel = conf->memlevel;
|
|
|
463
|
|
|
464 if (ctx->length > 0) {
|
|
|
465
|
|
|
466 /* the actual zlib window size is smaller by 262 bytes */
|
|
|
467
|
|
|
468 while (ctx->length < ((1 << (wbits - 1)) - 262)) {
|
|
|
469 wbits--;
|
|
|
470 memlevel--;
|
|
|
471 }
|
|
|
472 }
|
|
|
473
|
|
|
474 /*
|
|
|
475 * We preallocate a memory for zlib in one buffer (200K-400K), this
|
|
32
|
476 * decreases a number of malloc() and free() calls and also probably
|
|
|
477 * decreases a number of syscalls (sbrk() and so on).
|
|
0
|
478 * Besides we free this memory as soon as the gzipping will complete
|
|
|
479 * and do not wait while a whole response will be sent to a client.
|
|
|
480 *
|
|
|
481 * 8K is for zlib deflate_state, it takes
|
|
|
482 * * 5816 bytes on x86 and sparc64 (32-bit mode)
|
|
|
483 * * 5920 bytes on amd64 and sparc64
|
|
|
484 */
|
|
|
485
|
|
|
486 ctx->allocated = 8192 + (1 << (wbits + 2)) + (1 << (memlevel + 9));
|
|
|
487
|
|
|
488 if (!(ctx->preallocated = ngx_palloc(r->pool, ctx->allocated))) {
|
|
|
489 return NGX_ERROR;
|
|
|
490 }
|
|
|
491
|
|
|
492 ctx->free_mem = ctx->preallocated;
|
|
|
493
|
|
|
494 ctx->zstream.zalloc = ngx_http_gzip_filter_alloc;
|
|
|
495 ctx->zstream.zfree = ngx_http_gzip_filter_free;
|
|
|
496 ctx->zstream.opaque = ctx;
|
|
|
497
|
|
|
498 rc = deflateInit2(&ctx->zstream, conf->level, Z_DEFLATED,
|
|
|
499 -wbits, memlevel, Z_DEFAULT_STRATEGY);
|
|
|
500
|
|
|
501 if (rc != Z_OK) {
|
|
|
502 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
503 "deflateInit2() failed: %d", rc);
|
|
28
|
504 ngx_http_gzip_error(ctx);
|
|
|
505 return NGX_ERROR;
|
|
0
|
506 }
|
|
|
507
|
|
|
508 if (!(b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t)))) {
|
|
28
|
509 ngx_http_gzip_error(ctx);
|
|
|
510 return NGX_ERROR;
|
|
0
|
511 }
|
|
|
512
|
|
|
513 b->memory = 1;
|
|
|
514 b->pos = gzheader;
|
|
|
515 b->last = b->pos + 10;
|
|
|
516
|
|
10
|
517 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
518 ngx_http_gzip_error(ctx);
|
|
|
519 return NGX_ERROR;
|
|
10
|
520 }
|
|
|
521 cl->buf = b;
|
|
|
522 cl->next = NULL;
|
|
18
|
523
|
|
|
524 /*
|
|
|
525 * We pass the gzheader to the next filter now to avoid its linking
|
|
|
526 * to the ctx->busy chain. zlib does not usually output the compressed
|
|
|
527 * data in the initial iterations, so the gzheader that was linked
|
|
|
528 * to the ctx->busy chain would be flushed by ngx_http_write_filter().
|
|
|
529 */
|
|
|
530
|
|
|
531 if (ngx_http_next_body_filter(r, cl) == NGX_ERROR) {
|
|
28
|
532 ngx_http_gzip_error(ctx);
|
|
|
533 return NGX_ERROR;
|
|
18
|
534 }
|
|
|
535
|
|
|
536 ctx->last_out = &ctx->out;
|
|
0
|
537
|
|
|
538 ctx->crc32 = crc32(0L, Z_NULL, 0);
|
|
|
539 ctx->flush = Z_NO_FLUSH;
|
|
|
540 }
|
|
|
541
|
|
|
542 if (in) {
|
|
|
543 if (ngx_chain_add_copy(r->pool, &ctx->in, in) == NGX_ERROR) {
|
|
28
|
544 ngx_http_gzip_error(ctx);
|
|
|
545 return NGX_ERROR;
|
|
0
|
546 }
|
|
|
547 }
|
|
|
548
|
|
|
549 last = NGX_NONE;
|
|
|
550
|
|
|
551 for ( ;; ) {
|
|
|
552
|
|
|
553 for ( ;; ) {
|
|
|
554
|
|
|
555 /* does zlib need a new data ? */
|
|
|
556
|
|
|
557 if (ctx->zstream.avail_in == 0
|
|
|
558 && ctx->flush == Z_NO_FLUSH
|
|
|
559 && !ctx->redo)
|
|
|
560 {
|
|
|
561 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
562 "gzip in: %p", ctx->in);
|
|
0
|
563
|
|
|
564 if (ctx->in == NULL) {
|
|
|
565 break;
|
|
|
566 }
|
|
|
567
|
|
|
568 ctx->in_buf = ctx->in->buf;
|
|
|
569 ctx->in = ctx->in->next;
|
|
|
570
|
|
|
571 ctx->zstream.next_in = ctx->in_buf->pos;
|
|
|
572 ctx->zstream.avail_in = ctx->in_buf->last - ctx->in_buf->pos;
|
|
|
573
|
|
|
574 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
575 "gzip in_buf:%p ni:%p ai:%ud",
|
|
0
|
576 ctx->in_buf,
|
|
|
577 ctx->zstream.next_in, ctx->zstream.avail_in);
|
|
|
578
|
|
|
579 /* STUB */
|
|
|
580 if (ctx->in_buf->last < ctx->in_buf->pos) {
|
|
|
581 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
582 "zstream.avail_in is huge");
|
|
|
583 ctx->done = 1;
|
|
|
584 return NGX_ERROR;
|
|
|
585 }
|
|
|
586 /**/
|
|
|
587
|
|
|
588 if (ctx->in_buf->last_buf) {
|
|
|
589 ctx->flush = Z_FINISH;
|
|
|
590
|
|
|
591 } else if (ctx->in_buf->flush) {
|
|
|
592 ctx->flush = Z_SYNC_FLUSH;
|
|
|
593 }
|
|
|
594
|
|
|
595 if (ctx->zstream.avail_in == 0) {
|
|
|
596 if (ctx->flush == Z_NO_FLUSH) {
|
|
|
597 continue;
|
|
|
598 }
|
|
|
599
|
|
|
600 } else {
|
|
|
601 ctx->crc32 = crc32(ctx->crc32, ctx->zstream.next_in,
|
|
|
602 ctx->zstream.avail_in);
|
|
|
603 }
|
|
|
604 }
|
|
|
605
|
|
|
606
|
|
|
607 /* is there a space for the gzipped data ? */
|
|
|
608
|
|
|
609 if (ctx->zstream.avail_out == 0) {
|
|
|
610
|
|
|
611 if (ctx->free) {
|
|
|
612 ctx->out_buf = ctx->free->buf;
|
|
|
613 ctx->free = ctx->free->next;
|
|
|
614
|
|
|
615 } else if (ctx->bufs < conf->bufs.num) {
|
|
|
616 ctx->out_buf = ngx_create_temp_buf(r->pool,
|
|
|
617 conf->bufs.size);
|
|
|
618 if (ctx->out_buf == NULL) {
|
|
28
|
619 ngx_http_gzip_error(ctx);
|
|
|
620 return NGX_ERROR;
|
|
0
|
621 }
|
|
|
622
|
|
|
623 ctx->out_buf->tag = (ngx_buf_tag_t)
|
|
|
624 &ngx_http_gzip_filter_module;
|
|
|
625 ctx->out_buf->recycled = 1;
|
|
|
626 ctx->bufs++;
|
|
|
627
|
|
|
628 } else {
|
|
|
629 break;
|
|
|
630 }
|
|
|
631
|
|
|
632 ctx->zstream.next_out = ctx->out_buf->pos;
|
|
|
633 ctx->zstream.avail_out = conf->bufs.size;
|
|
|
634 }
|
|
|
635
|
|
|
636 ngx_log_debug6(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
637 "deflate in: ni:%p no:%p ai:%ud ao:%ud fl:%d redo:%d",
|
|
|
638 ctx->zstream.next_in, ctx->zstream.next_out,
|
|
|
639 ctx->zstream.avail_in, ctx->zstream.avail_out,
|
|
|
640 ctx->flush, ctx->redo);
|
|
0
|
641
|
|
|
642 rc = deflate(&ctx->zstream, ctx->flush);
|
|
|
643
|
|
|
644 if (rc != Z_OK && rc != Z_STREAM_END) {
|
|
|
645 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
646 "deflate() failed: %d, %d", ctx->flush, rc);
|
|
28
|
647 ngx_http_gzip_error(ctx);
|
|
|
648 return NGX_ERROR;
|
|
0
|
649 }
|
|
|
650
|
|
|
651 ngx_log_debug5(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
652 "deflate out: ni:%p no:%p ai:%ud ao:%ud rc:%d",
|
|
0
|
653 ctx->zstream.next_in, ctx->zstream.next_out,
|
|
|
654 ctx->zstream.avail_in, ctx->zstream.avail_out,
|
|
|
655 rc);
|
|
|
656
|
|
|
657 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
10
|
658 "gzip in_buf:%p pos:%p",
|
|
0
|
659 ctx->in_buf, ctx->in_buf->pos);
|
|
|
660
|
|
|
661
|
|
|
662 if (ctx->zstream.next_in) {
|
|
|
663 ctx->in_buf->pos = ctx->zstream.next_in;
|
|
|
664
|
|
|
665 if (ctx->zstream.avail_in == 0) {
|
|
|
666 ctx->zstream.next_in = NULL;
|
|
|
667 }
|
|
|
668 }
|
|
|
669
|
|
|
670 ctx->out_buf->last = ctx->zstream.next_out;
|
|
|
671
|
|
|
672 if (ctx->zstream.avail_out == 0) {
|
|
|
673
|
|
|
674 /* zlib wants to output some more gzipped data */
|
|
|
675
|
|
10
|
676 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
677 ngx_http_gzip_error(ctx);
|
|
|
678 return NGX_ERROR;
|
|
10
|
679 }
|
|
|
680 cl->buf = ctx->out_buf;
|
|
|
681 cl->next = NULL;
|
|
0
|
682 *ctx->last_out = cl;
|
|
|
683 ctx->last_out = &cl->next;
|
|
|
684
|
|
|
685 ctx->redo = 1;
|
|
|
686
|
|
|
687 continue;
|
|
|
688 }
|
|
|
689
|
|
|
690 ctx->redo = 0;
|
|
|
691
|
|
|
692 if (ctx->flush == Z_SYNC_FLUSH) {
|
|
|
693
|
|
|
694 ctx->out_buf->flush = 0;
|
|
|
695 ctx->flush = Z_NO_FLUSH;
|
|
|
696
|
|
10
|
697 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
698 ngx_http_gzip_error(ctx);
|
|
|
699 return NGX_ERROR;
|
|
10
|
700 }
|
|
|
701 cl->buf = ctx->out_buf;
|
|
|
702 cl->next = NULL;
|
|
0
|
703 *ctx->last_out = cl;
|
|
|
704 ctx->last_out = &cl->next;
|
|
|
705
|
|
|
706 break;
|
|
|
707 }
|
|
|
708
|
|
|
709 if (rc == Z_STREAM_END) {
|
|
|
710
|
|
|
711 ctx->zin = ctx->zstream.total_in;
|
|
|
712 ctx->zout = 10 + ctx->zstream.total_out + 8;
|
|
|
713
|
|
|
714 rc = deflateEnd(&ctx->zstream);
|
|
|
715
|
|
|
716 if (rc != Z_OK) {
|
|
|
717 ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
|
|
718 "deflateEnd() failed: %d", rc);
|
|
28
|
719 ngx_http_gzip_error(ctx);
|
|
|
720 return NGX_ERROR;
|
|
0
|
721 }
|
|
|
722
|
|
|
723 ngx_pfree(r->pool, ctx->preallocated);
|
|
|
724
|
|
10
|
725 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
726 ngx_http_gzip_error(ctx);
|
|
|
727 return NGX_ERROR;
|
|
10
|
728 }
|
|
|
729 cl->buf = ctx->out_buf;
|
|
|
730 cl->next = NULL;
|
|
0
|
731 *ctx->last_out = cl;
|
|
|
732 ctx->last_out = &cl->next;
|
|
|
733
|
|
|
734 if (ctx->zstream.avail_out >= 8) {
|
|
|
735 trailer = (struct gztrailer *) ctx->out_buf->last;
|
|
|
736 ctx->out_buf->last += 8;
|
|
|
737 ctx->out_buf->last_buf = 1;
|
|
|
738
|
|
|
739 } else {
|
|
|
740 if (!(b = ngx_create_temp_buf(r->pool, 8))) {
|
|
28
|
741 ngx_http_gzip_error(ctx);
|
|
|
742 return NGX_ERROR;
|
|
0
|
743 }
|
|
|
744
|
|
|
745 b->last_buf = 1;
|
|
|
746
|
|
10
|
747 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
748 ngx_http_gzip_error(ctx);
|
|
|
749 return NGX_ERROR;
|
|
10
|
750 }
|
|
|
751 cl->buf = b;
|
|
|
752 cl->next = NULL;
|
|
0
|
753 *ctx->last_out = cl;
|
|
|
754 ctx->last_out = &cl->next;
|
|
|
755 trailer = (struct gztrailer *) b->pos;
|
|
|
756 b->last += 8;
|
|
|
757 }
|
|
|
758
|
|
28
|
759 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED)
|
|
|
760
|
|
0
|
761 trailer->crc32 = ctx->crc32;
|
|
|
762 trailer->zlen = ctx->zin;
|
|
28
|
763
|
|
0
|
764 #else
|
|
28
|
765 trailer->crc32[0] = (u_char) (ctx->crc32 & 0xff);
|
|
|
766 trailer->crc32[1] = (u_char) ((ctx->crc32 >> 8) & 0xff);
|
|
|
767 trailer->crc32[2] = (u_char) ((ctx->crc32 >> 16) & 0xff);
|
|
|
768 trailer->crc32[3] = (u_char) ((ctx->crc32 >> 24) & 0xff);
|
|
0
|
769
|
|
28
|
770 trailer->zlen[0] = (u_char) (ctx->zin & 0xff);
|
|
|
771 trailer->zlen[1] = (u_char) ((ctx->zin >> 8) & 0xff);
|
|
|
772 trailer->zlen[2] = (u_char) ((ctx->zin >> 16) & 0xff);
|
|
|
773 trailer->zlen[3] = (u_char) ((ctx->zin >> 24) & 0xff);
|
|
0
|
774 #endif
|
|
|
775
|
|
|
776 ctx->zstream.avail_in = 0;
|
|
|
777 ctx->zstream.avail_out = 0;
|
|
|
778
|
|
|
779 ctx->done = 1;
|
|
|
780
|
|
|
781 break;
|
|
|
782 }
|
|
|
783
|
|
|
784 if (conf->no_buffer && ctx->in == NULL) {
|
|
10
|
785 if (!(cl = ngx_alloc_chain_link(r->pool))) {
|
|
28
|
786 ngx_http_gzip_error(ctx);
|
|
|
787 return NGX_ERROR;
|
|
10
|
788 }
|
|
|
789 cl->buf = ctx->out_buf;
|
|
|
790 cl->next = NULL;
|
|
0
|
791 *ctx->last_out = cl;
|
|
|
792 ctx->last_out = &cl->next;
|
|
|
793
|
|
|
794 break;
|
|
|
795 }
|
|
|
796 }
|
|
|
797
|
|
18
|
798 if (last == NGX_AGAIN && !ctx->done) {
|
|
0
|
799 return NGX_AGAIN;
|
|
|
800 }
|
|
|
801
|
|
|
802 if (ctx->out == NULL && ctx->busy == NULL) {
|
|
|
803 return NGX_OK;
|
|
|
804 }
|
|
|
805
|
|
|
806 last = ngx_http_next_body_filter(r, ctx->out);
|
|
|
807
|
|
|
808 /*
|
|
|
809 * we do not check NGX_AGAIN here because the downstream filters
|
|
|
810 * may free some buffers and zlib may compress some data into them
|
|
|
811 */
|
|
|
812
|
|
|
813 if (last == NGX_ERROR) {
|
|
28
|
814 ngx_http_gzip_error(ctx);
|
|
|
815 return NGX_ERROR;
|
|
0
|
816 }
|
|
|
817
|
|
|
818 ngx_chain_update_chains(&ctx->free, &ctx->busy, &ctx->out,
|
|
|
819 (ngx_buf_tag_t) &ngx_http_gzip_filter_module);
|
|
|
820 ctx->last_out = &ctx->out;
|
|
|
821
|
|
|
822 if (ctx->done) {
|
|
|
823 return last;
|
|
|
824 }
|
|
|
825 }
|
|
|
826 }
|
|
|
827
|
|
|
828
|
|
46
|
829 static void *
|
|
|
830 ngx_http_gzip_filter_alloc(void *opaque, u_int items, u_int size)
|
|
0
|
831 {
|
|
|
832 ngx_http_gzip_ctx_t *ctx = opaque;
|
|
|
833
|
|
|
834 void *p;
|
|
|
835 ngx_uint_t alloc;
|
|
|
836
|
|
|
837 alloc = items * size;
|
|
10
|
838
|
|
0
|
839 if (alloc % 512 != 0) {
|
|
|
840
|
|
|
841 /*
|
|
10
|
842 * The zlib deflate_state allocation, it takes about 6K,
|
|
|
843 * we allocate 8K. Other allocations are divisible by 512.
|
|
0
|
844 */
|
|
|
845
|
|
|
846 alloc = (alloc + ngx_pagesize - 1) & ~(ngx_pagesize - 1);
|
|
|
847 }
|
|
|
848
|
|
|
849 if (alloc <= ctx->allocated) {
|
|
|
850 p = ctx->free_mem;
|
|
|
851 ctx->free_mem += alloc;
|
|
|
852 ctx->allocated -= alloc;
|
|
|
853
|
|
|
854 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
10
|
855 "gzip alloc: n:%ud s:%ud a:%ud p:%p",
|
|
0
|
856 items, size, alloc, p);
|
|
|
857
|
|
|
858 return p;
|
|
|
859 }
|
|
|
860
|
|
|
861 ngx_log_error(NGX_LOG_ALERT, ctx->request->connection->log, 0,
|
|
10
|
862 "gzip filter failed to use preallocated memory: %ud of %ud",
|
|
0
|
863 items * size, ctx->allocated);
|
|
|
864
|
|
|
865 p = ngx_palloc(ctx->request->pool, items * size);
|
|
|
866
|
|
|
867 return p;
|
|
|
868 }
|
|
|
869
|
|
|
870
|
|
46
|
871 static void
|
|
|
872 ngx_http_gzip_filter_free(void *opaque, void *address)
|
|
0
|
873 {
|
|
|
874 #if 0
|
|
|
875 ngx_http_gzip_ctx_t *ctx = opaque;
|
|
|
876
|
|
|
877 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
10
|
878 "gzip free: %p", address);
|
|
0
|
879 #endif
|
|
|
880 }
|
|
|
881
|
|
|
882
|
|
46
|
883 static u_char *
|
|
|
884 ngx_http_gzip_log_ratio(ngx_http_request_t *r, u_char *buf,
|
|
|
885 ngx_http_log_op_t *op)
|
|
0
|
886 {
|
|
|
887 ngx_uint_t zint, zfrac;
|
|
|
888 ngx_http_gzip_ctx_t *ctx;
|
|
|
889
|
|
|
890 ctx = ngx_http_get_module_ctx(r, ngx_http_gzip_filter_module);
|
|
|
891
|
|
|
892 if (ctx == NULL || ctx->zout == 0) {
|
|
|
893 *buf = '-';
|
|
|
894 return buf + 1;
|
|
|
895 }
|
|
|
896
|
|
|
897 zint = (ngx_uint_t) (ctx->zin / ctx->zout);
|
|
|
898 zfrac = (ngx_uint_t) ((ctx->zin * 100 / ctx->zout) % 100);
|
|
|
899
|
|
4
|
900 if ((ctx->zin * 1000 / ctx->zout) % 10 > 4) {
|
|
|
901
|
|
|
902 /* the rounding, e.g., 2.125 to 2.13 */
|
|
|
903
|
|
|
904 zfrac++;
|
|
|
905
|
|
|
906 if (zfrac > 99) {
|
|
0
|
907 zint++;
|
|
|
908 zfrac = 0;
|
|
|
909 }
|
|
|
910 }
|
|
|
911
|
|
4
|
912 return ngx_sprintf(buf, "%ui.%02ui", zint, zfrac);
|
|
0
|
913 }
|
|
|
914
|
|
|
915
|
|
46
|
916 static void
|
|
|
917 ngx_http_gzip_error(ngx_http_gzip_ctx_t *ctx)
|
|
0
|
918 {
|
|
|
919 deflateEnd(&ctx->zstream);
|
|
|
920
|
|
18
|
921 if (ctx->preallocated) {
|
|
|
922 ngx_pfree(ctx->request->pool, ctx->preallocated);
|
|
|
923 }
|
|
0
|
924
|
|
|
925 ctx->zstream.avail_in = 0;
|
|
|
926 ctx->zstream.avail_out = 0;
|
|
|
927
|
|
|
928 ctx->done = 1;
|
|
|
929
|
|
28
|
930 return;
|
|
0
|
931 }
|
|
|
932
|
|
|
933
|
|
46
|
934 static ngx_int_t
|
|
|
935 ngx_http_gzip_add_log_formats(ngx_conf_t *cf)
|
|
0
|
936 {
|
|
|
937 ngx_http_log_op_name_t *op;
|
|
|
938
|
|
|
939 for (op = ngx_http_gzip_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
28
|
940 op->run = NULL;
|
|
0
|
941
|
|
28
|
942 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
0
|
943 if (op->name.len == 0) {
|
|
28
|
944 op = (ngx_http_log_op_name_t *) op->run;
|
|
0
|
945 }
|
|
|
946 }
|
|
|
947
|
|
28
|
948 op->run = (ngx_http_log_op_run_pt) ngx_http_gzip_log_fmt_ops;
|
|
0
|
949
|
|
|
950 return NGX_OK;
|
|
|
951 }
|
|
|
952
|
|
|
953
|
|
46
|
954 static ngx_int_t
|
|
|
955 ngx_http_gzip_filter_init(ngx_cycle_t *cycle)
|
|
0
|
956 {
|
|
|
957 ngx_http_next_header_filter = ngx_http_top_header_filter;
|
|
|
958 ngx_http_top_header_filter = ngx_http_gzip_header_filter;
|
|
|
959
|
|
|
960 ngx_http_next_body_filter = ngx_http_top_body_filter;
|
|
|
961 ngx_http_top_body_filter = ngx_http_gzip_body_filter;
|
|
|
962
|
|
|
963 return NGX_OK;
|
|
|
964 }
|
|
|
965
|
|
|
966
|
|
46
|
967 static void *
|
|
|
968 ngx_http_gzip_create_conf(ngx_conf_t *cf)
|
|
0
|
969 {
|
|
|
970 ngx_http_gzip_conf_t *conf;
|
|
|
971
|
|
|
972 if (!(conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_gzip_conf_t)))) {
|
|
|
973 return NGX_CONF_ERROR;
|
|
|
974 }
|
|
|
975
|
|
|
976 /*
|
|
28
|
977 * set by ngx_pcalloc():
|
|
|
978 *
|
|
|
979 * conf->bufs.num = 0;
|
|
|
980 * conf->proxied = 0;
|
|
|
981 * conf->types = NULL;
|
|
0
|
982 */
|
|
|
983
|
|
|
984 conf->enable = NGX_CONF_UNSET;
|
|
|
985 conf->no_buffer = NGX_CONF_UNSET;
|
|
|
986
|
|
|
987 conf->http_version = NGX_CONF_UNSET_UINT;
|
|
|
988
|
|
|
989 conf->level = NGX_CONF_UNSET;
|
|
|
990 conf->wbits = (size_t) NGX_CONF_UNSET;
|
|
|
991 conf->memlevel = (size_t) NGX_CONF_UNSET;
|
|
|
992 conf->min_length = NGX_CONF_UNSET;
|
|
|
993
|
|
|
994 return conf;
|
|
|
995 }
|
|
|
996
|
|
|
997
|
|
46
|
998 static char *
|
|
|
999 ngx_http_gzip_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
0
|
1000 {
|
|
|
1001 ngx_http_gzip_conf_t *prev = parent;
|
|
|
1002 ngx_http_gzip_conf_t *conf = child;
|
|
|
1003
|
|
2
|
1004 ngx_http_gzip_type_t *type;
|
|
|
1005
|
|
0
|
1006 ngx_conf_merge_value(conf->enable, prev->enable, 0);
|
|
|
1007
|
|
|
1008 ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 4, ngx_pagesize);
|
|
|
1009
|
|
|
1010 ngx_conf_merge_unsigned_value(conf->http_version, prev->http_version,
|
|
46
|
1011 NGX_HTTP_VERSION_11);
|
|
0
|
1012 ngx_conf_merge_bitmask_value(conf->proxied, prev->proxied,
|
|
46
|
1013 (NGX_CONF_BITMASK_SET|NGX_HTTP_GZIP_PROXIED_OFF));
|
|
0
|
1014
|
|
|
1015 ngx_conf_merge_value(conf->level, prev->level, 1);
|
|
|
1016 ngx_conf_merge_size_value(conf->wbits, prev->wbits, MAX_WBITS);
|
|
|
1017 ngx_conf_merge_size_value(conf->memlevel, prev->memlevel,
|
|
|
1018 MAX_MEM_LEVEL - 1);
|
|
|
1019 ngx_conf_merge_value(conf->min_length, prev->min_length, 0);
|
|
|
1020 ngx_conf_merge_value(conf->no_buffer, prev->no_buffer, 0);
|
|
|
1021
|
|
2
|
1022 if (conf->types == NULL) {
|
|
|
1023 if (prev->types == NULL) {
|
|
|
1024 conf->types = ngx_array_create(cf->pool, 1,
|
|
|
1025 sizeof(ngx_http_gzip_type_t));
|
|
|
1026 if (conf->types == NULL) {
|
|
|
1027 return NGX_CONF_ERROR;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (!(type = ngx_array_push(conf->types))) {
|
|
|
1031 return NGX_CONF_ERROR;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 type->name.len = sizeof("text/html") - 1;
|
|
|
1035 type->name.data = (u_char *) "text/html";
|
|
|
1036 type->enable = 1;
|
|
|
1037
|
|
|
1038 } else {
|
|
|
1039 conf->types = prev->types;
|
|
|
1040 }
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 return NGX_CONF_OK;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046
|
|
46
|
1047 static char *
|
|
|
1048 ngx_http_gzip_set_types(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
2
|
1049 {
|
|
|
1050 ngx_http_gzip_conf_t *gcf = conf;
|
|
|
1051
|
|
|
1052 ngx_str_t *value;
|
|
|
1053 ngx_uint_t i;
|
|
|
1054 ngx_http_gzip_type_t *type;
|
|
|
1055
|
|
|
1056 if (gcf->types == NULL) {
|
|
46
|
1057 gcf->types = ngx_array_create(cf->pool, 4,
|
|
2
|
1058 sizeof(ngx_http_gzip_type_t));
|
|
|
1059 if (gcf->types == NULL) {
|
|
|
1060 return NGX_CONF_ERROR;
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 if (!(type = ngx_array_push(gcf->types))) {
|
|
|
1064 return NGX_CONF_ERROR;
|
|
|
1065 }
|
|
|
1066
|
|
|
1067 type->name.len = sizeof("text/html") - 1;
|
|
|
1068 type->name.data = (u_char *) "text/html";
|
|
|
1069 type->enable = 1;
|
|
|
1070 }
|
|
|
1071
|
|
|
1072 value = cf->args->elts;
|
|
|
1073
|
|
|
1074 for (i = 1; i < cf->args->nelts; i++) {
|
|
|
1075
|
|
|
1076 if (ngx_strcmp(value[i].data, "text/html") == 0) {
|
|
|
1077 continue;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 if (!(type = ngx_array_push(gcf->types))) {
|
|
|
1081 return NGX_CONF_ERROR;
|
|
|
1082 }
|
|
|
1083
|
|
|
1084 type->name.len = value[i].len;
|
|
|
1085
|
|
|
1086 if (!(type->name.data = ngx_palloc(cf->pool, type->name.len + 1))) {
|
|
|
1087 return NGX_CONF_ERROR;
|
|
|
1088 }
|
|
|
1089
|
|
|
1090 ngx_cpystrn(type->name.data, value[i].data, type->name.len + 1);
|
|
|
1091 }
|
|
|
1092
|
|
0
|
1093 return NGX_CONF_OK;
|
|
|
1094 }
|
|
|
1095
|
|
|
1096
|
|
46
|
1097 static char *
|
|
|
1098 ngx_http_gzip_set_window(ngx_conf_t *cf, void *post, void *data)
|
|
0
|
1099 {
|
|
|
1100 int *np = data;
|
|
|
1101
|
|
|
1102 int wbits, wsize;
|
|
|
1103
|
|
|
1104 wbits = 15;
|
|
|
1105
|
|
|
1106 for (wsize = 32 * 1024; wsize > 256; wsize >>= 1) {
|
|
|
1107
|
|
|
1108 if (wsize == *np) {
|
|
|
1109 *np = wbits;
|
|
|
1110
|
|
|
1111 return NGX_CONF_OK;
|
|
|
1112 }
|
|
|
1113
|
|
|
1114 wbits--;
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 return "must be 512, 1k, 2k, 4k, 8k, 16k, or 32k";
|
|
|
1118 }
|
|
|
1119
|
|
|
1120
|
|
46
|
1121 static char *
|
|
|
1122 ngx_http_gzip_set_hash(ngx_conf_t *cf, void *post, void *data)
|
|
0
|
1123 {
|
|
|
1124 int *np = data;
|
|
|
1125
|
|
|
1126 int memlevel, hsize;
|
|
|
1127
|
|
|
1128 memlevel = 9;
|
|
|
1129
|
|
|
1130 for (hsize = 128 * 1024; hsize > 256; hsize >>= 1) {
|
|
|
1131
|
|
|
1132 if (hsize == *np) {
|
|
|
1133 *np = memlevel;
|
|
|
1134
|
|
|
1135 return NGX_CONF_OK;
|
|
|
1136 }
|
|
|
1137
|
|
|
1138 memlevel--;
|
|
|
1139 }
|
|
|
1140
|
|
|
1141 return "must be 512, 1k, 2k, 4k, 8k, 16k, 32k, 64k, or 128k";
|
|
|
1142 }
|
