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1
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2 /*
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3 * Copyright (C) Maxim Dounin
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4 */
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5
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6 #include <ngx_config.h>
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7 #include <ngx_core.h>
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8 #include <ngx_http.h>
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9
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10
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11 typedef struct {
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12 ngx_msec_t delay;
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13 } ngx_http_delay_body_conf_t;
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14
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15
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16 static void *ngx_http_delay_body_create_conf(ngx_conf_t *cf);
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17 static char *ngx_http_delay_body_merge_conf(ngx_conf_t *cf, void *parent,
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18 void *child);
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19 static ngx_int_t ngx_http_delay_body_init(ngx_conf_t *cf);
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20
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21
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22 static ngx_command_t ngx_http_delay_body_commands[] = {
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23
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24 { ngx_string("delay_body"),
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25 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
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26 ngx_conf_set_msec_slot,
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27 NGX_HTTP_LOC_CONF_OFFSET,
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28 offsetof(ngx_http_delay_body_conf_t, delay),
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29 NULL },
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30
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31 ngx_null_command
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32 };
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33
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34
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35 static ngx_http_module_t ngx_http_delay_body_module_ctx = {
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36 NULL, /* preconfiguration */
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37 ngx_http_delay_body_init, /* postconfiguration */
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38
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39 NULL, /* create main configuration */
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40 NULL, /* init main configuration */
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41
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42 NULL, /* create server configuration */
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43 NULL, /* merge server configuration */
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44
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45 ngx_http_delay_body_create_conf, /* create location configuration */
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46 ngx_http_delay_body_merge_conf /* merge location configuration */
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47 };
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48
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49
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50 ngx_module_t ngx_http_delay_body_filter_module = {
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51 NGX_MODULE_V1,
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52 &ngx_http_delay_body_module_ctx, /* module context */
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53 ngx_http_delay_body_commands, /* module directives */
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54 NGX_HTTP_MODULE, /* module type */
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55 NULL, /* init master */
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56 NULL, /* init module */
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57 NULL, /* init process */
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58 NULL, /* init thread */
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59 NULL, /* exit thread */
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60 NULL, /* exit process */
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61 NULL, /* exit master */
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62 NGX_MODULE_V1_PADDING
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63 };
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64
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65
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66 static ngx_http_request_body_filter_pt ngx_http_next_request_body_filter;
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67
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68
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69 static ngx_int_t
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70 ngx_http_delay_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
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71 {
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72 ngx_chain_t *cl;
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73 ngx_http_delay_body_conf_t *conf;
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74
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75 conf = ngx_http_get_module_loc_conf(r, ngx_http_delay_body_filter_module);
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76
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77 if (!conf->delay) {
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78 return ngx_http_next_request_body_filter(r, in);
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79 }
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80
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81 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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82 "delay request body filter");
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83
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84 /* TODO: delay */
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85
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86 for (cl = in; cl; cl = cl->next) {
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87
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88 if (cl->buf->last_buf) {
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89 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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90 "delay body: last buf");
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91 }
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92
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93 }
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94
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95 return ngx_http_next_request_body_filter(r, in);
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96 }
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97
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98
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99 static void *
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100 ngx_http_delay_body_create_conf(ngx_conf_t *cf)
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101 {
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102 ngx_http_delay_body_conf_t *conf;
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103
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104 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_delay_body_conf_t));
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105 if (conf == NULL) {
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106 return NULL;
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107 }
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108
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109 conf->delay = NGX_CONF_UNSET_MSEC;
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110
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111 return conf;
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112 }
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113
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114
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115 static char *
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116 ngx_http_delay_body_merge_conf(ngx_conf_t *cf, void *parent, void *child)
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117 {
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118 ngx_http_delay_body_conf_t *prev = parent;
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119 ngx_http_delay_body_conf_t *conf = child;
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120
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121 ngx_conf_merge_msec_value(conf->delay, prev->delay, 0);
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122
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123 return NGX_CONF_OK;
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124 }
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125
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126
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127 static ngx_int_t
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128 ngx_http_delay_body_init(ngx_conf_t *cf)
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129 {
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130 ngx_http_next_request_body_filter = ngx_http_top_request_body_filter;
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131 ngx_http_top_request_body_filter = ngx_http_delay_body_filter;
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132
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133 return NGX_OK;
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134 }
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