521
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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_event.h>
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10 #include <ngx_event_connect.h>
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11 #include <ngx_imap.h>
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12
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13
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14 typedef struct {
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527
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15 ngx_peers_t *peers;
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521
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16
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527
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17 ngx_msec_t timeout;
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521
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18
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527
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19 ngx_str_t host_header;
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20 ngx_str_t uri;
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521
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21 } ngx_imap_auth_http_conf_t;
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22
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23
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527
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24 typedef struct ngx_imap_auth_http_ctx_s ngx_imap_auth_http_ctx_t;
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25
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26 typedef void (*ngx_imap_auth_http_handler_pt)(ngx_imap_session_t *s,
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27 ngx_imap_auth_http_ctx_t *ctx);
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28
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29 struct ngx_imap_auth_http_ctx_s {
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30 ngx_buf_t *request;
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31 ngx_buf_t *response;
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32 ngx_peer_connection_t peer;
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33
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34 ngx_imap_auth_http_handler_pt handler;
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35
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36 ngx_uint_t state;
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37 ngx_uint_t hash; /* no needed ? */
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38
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39 u_char *header_name_start;
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40 u_char *header_name_end;
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41 u_char *header_start;
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42 u_char *header_end;
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43
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44 ngx_str_t addr;
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45 ngx_str_t port;
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46 ngx_str_t err;
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47
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48 ngx_msec_t sleep;
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49
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50 ngx_peers_t *peers;
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51 };
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521
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52
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53
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54 static void ngx_imap_auth_http_write_handler(ngx_event_t *wev);
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55 static void ngx_imap_auth_http_read_handler(ngx_event_t *rev);
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527
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56 static void ngx_imap_auth_http_ignore_status_line(ngx_imap_session_t *s,
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57 ngx_imap_auth_http_ctx_t *ctx);
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58 static void ngx_imap_auth_http_process_headers(ngx_imap_session_t *s,
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59 ngx_imap_auth_http_ctx_t *ctx);
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60 static void ngx_imap_auth_sleep_handler(ngx_event_t *rev);
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61 static ngx_int_t ngx_imap_auth_http_parse_header_line(ngx_imap_session_t *s,
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62 ngx_imap_auth_http_ctx_t *ctx);
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521
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63 static void ngx_imap_auth_http_block_read(ngx_event_t *rev);
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64 static void ngx_imap_auth_http_dummy_handler(ngx_event_t *ev);
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65 static ngx_buf_t *ngx_imap_auth_http_create_request(ngx_imap_session_t *s,
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66 ngx_imap_auth_http_conf_t *ahcf);
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67
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68 static void *ngx_imap_auth_http_create_conf(ngx_conf_t *cf);
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69 static char *ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent,
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70 void *child);
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71 static char *ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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72
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73
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74 static ngx_command_t ngx_imap_auth_http_commands[] = {
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75
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76 { ngx_string("auth_http"),
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77 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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78 ngx_imap_auth_http,
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79 NGX_IMAP_SRV_CONF_OFFSET,
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80 0,
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81 NULL },
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82
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83 { ngx_string("auth_http_timeout"),
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84 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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85 ngx_conf_set_msec_slot,
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86 NGX_IMAP_SRV_CONF_OFFSET,
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87 offsetof(ngx_imap_auth_http_conf_t, timeout),
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88 NULL },
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89
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90 ngx_null_command
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91 };
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92
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93
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94 static ngx_imap_module_t ngx_imap_auth_http_module_ctx = {
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95 NULL, /* create main configuration */
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96 NULL, /* init main configuration */
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97
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98 ngx_imap_auth_http_create_conf, /* create server configuration */
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99 ngx_imap_auth_http_merge_conf /* merge server configuration */
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100 };
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101
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102
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103 ngx_module_t ngx_imap_auth_http_module = {
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104 NGX_MODULE_V1,
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105 &ngx_imap_auth_http_module_ctx, /* module context */
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106 ngx_imap_auth_http_commands, /* module directives */
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107 NGX_IMAP_MODULE, /* module type */
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541
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108 NULL, /* init master */
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521
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109 NULL, /* init module */
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541
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110 NULL, /* init process */
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111 NULL, /* init thread */
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112 NULL, /* exit thread */
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113 NULL, /* exit process */
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114 NULL, /* exit master */
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115 NGX_MODULE_V1_PADDING
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521
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116 };
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117
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118
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119 static char *ngx_imap_auth_http_protocol[] = { "pop3", "imap" };
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120
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121
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122 void
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123 ngx_imap_auth_http_init(ngx_imap_session_t *s)
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124 {
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125 ngx_int_t rc;
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126 ngx_imap_auth_http_ctx_t *ctx;
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127 ngx_imap_auth_http_conf_t *ahcf;
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128
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541
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129 s->connection->log->action = "in http auth state";
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130
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521
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131 ctx = ngx_pcalloc(s->connection->pool, sizeof(ngx_imap_auth_http_ctx_t));
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132 if (ctx == NULL) {
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525
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133 ngx_imap_session_internal_server_error(s);
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521
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134 return;
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135 }
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136
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137 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
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138
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139 ctx->request = ngx_imap_auth_http_create_request(s, ahcf);
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140 if (ctx->request == NULL) {
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525
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141 ngx_imap_session_internal_server_error(s);
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521
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142 return;
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143 }
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144
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145 ngx_imap_set_ctx(s, ctx, ngx_imap_auth_http_module);
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146
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147 ctx->peer.peers = ahcf->peers;
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148 ctx->peer.log = s->connection->log;
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149 ctx->peer.log_error = NGX_ERROR_ERR;
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150
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151 rc = ngx_event_connect_peer(&ctx->peer);
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152
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541
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153 if (rc == NGX_ERROR || rc == NGX_CONNECT_ERROR) {
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525
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154 ngx_imap_session_internal_server_error(s);
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521
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155 return;
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156 }
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157
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158 ctx->peer.connection->data = s;
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159 ctx->peer.connection->pool = s->connection->pool;
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160
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161 s->connection->read->handler = ngx_imap_auth_http_block_read;
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162 ctx->peer.connection->read->handler = ngx_imap_auth_http_read_handler;
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163 ctx->peer.connection->write->handler = ngx_imap_auth_http_write_handler;
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164
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527
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165 ctx->handler = ngx_imap_auth_http_ignore_status_line;
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166
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541
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167 ngx_add_timer(ctx->peer.connection->read, ahcf->timeout);
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168 ngx_add_timer(ctx->peer.connection->write, ahcf->timeout);
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169
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521
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170 if (rc == NGX_OK) {
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171 ngx_imap_auth_http_write_handler(ctx->peer.connection->write);
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172 return;
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173 }
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174 }
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175
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176
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177 static void
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178 ngx_imap_auth_http_write_handler(ngx_event_t *wev)
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179 {
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180 ssize_t n, size;
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181 ngx_connection_t *c;
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182 ngx_imap_session_t *s;
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183 ngx_imap_auth_http_ctx_t *ctx;
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184 ngx_imap_auth_http_conf_t *ahcf;
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185
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186 c = wev->data;
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187 s = c->data;
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188
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189 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
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190
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191 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, wev->log, 0,
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192 "imap auth http write handler");
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193
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194 if (wev->timedout) {
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195 ngx_log_error(NGX_LOG_ERR, wev->log, NGX_ETIMEDOUT,
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541
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196 "auth http server %V timed out",
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197 &ctx->peer.peers->peer[0].name);
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525
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198 ngx_close_connection(ctx->peer.connection);
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199 ngx_imap_session_internal_server_error(s);
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521
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200 return;
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201 }
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202
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203 size = ctx->request->last - ctx->request->pos;
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204
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205 n = ngx_send(c, ctx->request->pos, size);
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206
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207 if (n == NGX_ERROR) {
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525
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208 ngx_close_connection(ctx->peer.connection);
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209 ngx_imap_session_internal_server_error(s);
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521
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210 return;
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211 }
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212
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213 if (n > 0) {
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214 ctx->request->pos += n;
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215
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216 if (n == size) {
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217 wev->handler = ngx_imap_auth_http_dummy_handler;
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218
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219 if (wev->timer_set) {
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220 ngx_del_timer(wev);
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221 }
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222
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223 return;
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224 }
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225 }
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226
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227 if (!wev->timer_set) {
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228 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
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229 ngx_add_timer(wev, ahcf->timeout);
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230 }
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231 }
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232
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233
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234 static void
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235 ngx_imap_auth_http_read_handler(ngx_event_t *rev)
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236 {
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525
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237 ssize_t n, size;
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521
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238 ngx_connection_t *c;
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239 ngx_imap_session_t *s;
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240 ngx_imap_auth_http_ctx_t *ctx;
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241
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242 c = rev->data;
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243 s = c->data;
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244
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245 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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246 "imap auth http read handler");
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247
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525
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248 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
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249
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250 if (rev->timedout) {
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251 ngx_log_error(NGX_LOG_ERR, rev->log, NGX_ETIMEDOUT,
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541
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252 "auth http server %V timed out",
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253 &ctx->peer.peers->peer[0].name);
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525
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254 ngx_close_connection(ctx->peer.connection);
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255 ngx_imap_session_internal_server_error(s);
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256 return;
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257 }
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258
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259 if (ctx->response == NULL) {
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260 ctx->response = ngx_create_temp_buf(s->connection->pool, 1024);
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261 if (ctx->response == NULL) {
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262 ngx_close_connection(ctx->peer.connection);
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263 ngx_imap_session_internal_server_error(s);
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264 return;
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265 }
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266 }
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267
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527
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268 size = ctx->response->end - ctx->response->last;
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525
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269
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270 n = ngx_recv(c, ctx->response->pos, size);
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271
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527
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272 if (n > 0) {
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273 ctx->response->last += n;
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274
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275 ctx->handler(s, ctx);
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276 return;
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277 }
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278
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279 if (n == NGX_AGAIN) {
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525
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280 return;
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281 }
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282
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527
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283 ngx_close_connection(ctx->peer.connection);
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284 ngx_imap_session_internal_server_error(s);
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285 }
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525
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286
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287
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527
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288 static void
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289 ngx_imap_auth_http_ignore_status_line(ngx_imap_session_t *s,
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290 ngx_imap_auth_http_ctx_t *ctx)
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291 {
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292 u_char *p, ch;
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293 enum {
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294 sw_start = 0,
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295 sw_H,
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296 sw_HT,
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297 sw_HTT,
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298 sw_HTTP,
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299 sw_skip,
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300 sw_almost_done
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301 } state;
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302
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303 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
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304 "imap auth http process status line");
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305
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306 state = ctx->state;
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307
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308 for (p = ctx->response->pos; p < ctx->response->last; p++) {
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309 ch = *p;
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310
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311 switch (state) {
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312
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313 /* "HTTP/" */
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314 case sw_start:
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315 if (ch == 'H') {
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316 state = sw_H;
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317 break;
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318 }
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319 goto next;
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320
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321 case sw_H:
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322 if (ch == 'T') {
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323 state = sw_HT;
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324 break;
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325 }
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326 goto next;
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327
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328 case sw_HT:
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329 if (ch == 'T') {
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330 state = sw_HTT;
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331 break;
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332 }
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333 goto next;
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334
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335 case sw_HTT:
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336 if (ch == 'P') {
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337 state = sw_HTTP;
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338 break;
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339 }
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340 goto next;
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341
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342 case sw_HTTP:
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343 if (ch == '/') {
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344 state = sw_skip;
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345 break;
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346 }
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347 goto next;
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348
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349 /* any text until end of line */
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350 case sw_skip:
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351 switch (ch) {
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352 case CR:
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353 state = sw_almost_done;
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354
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355 break;
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356 case LF:
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357 goto done;
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358 }
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359 break;
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360
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361 /* end of status line */
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362 case sw_almost_done:
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363 if (ch == LF) {
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364 goto done;
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365 }
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366
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367 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
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541
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368 "auth http server &V sent invalid response",
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369 &ctx->peer.peers->peer[0].name);
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527
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370 ngx_close_connection(ctx->peer.connection);
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371 ngx_imap_session_internal_server_error(s);
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372 return;
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373 }
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374 }
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375
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376 ctx->response->pos = p;
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377 ctx->state = state;
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378
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379 return;
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380
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381 next:
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382
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383 p = ctx->response->start - 1;
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384
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385 done:
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386
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387 ctx->response->pos = p + 1;
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388 ctx->state = 0;
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389 ctx->handler = ngx_imap_auth_http_process_headers;
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390 ctx->handler(s, ctx);
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391 }
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525
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392
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393
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527
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394 static void
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395 ngx_imap_auth_http_process_headers(ngx_imap_session_t *s,
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396 ngx_imap_auth_http_ctx_t *ctx)
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397 {
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398 u_char *p;
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399 size_t len, size;
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400 ngx_int_t rc, port, n;
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401 struct sockaddr_in *sin;
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525
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402
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527
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403 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
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404 "imap auth http process headers");
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405
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406 for ( ;; ) {
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407 rc = ngx_imap_auth_http_parse_header_line(s, ctx);
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408
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409 if (rc == NGX_OK) {
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410
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411 #if (NGX_DEBUG)
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412 {
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413 ngx_str_t key, value;
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414
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415 key.len = ctx->header_name_end - ctx->header_name_start;
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416 key.data = ctx->header_name_start;
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417 value.len = ctx->header_end - ctx->header_start;
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418 value.data = ctx->header_start;
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419
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420 ngx_log_debug2(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
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421 "auth http header: \"%V: %V\"",
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422 &key, &value);
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423 }
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424 #endif
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425
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426 len = ctx->header_name_end - ctx->header_name_start;
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427
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428 if (len == sizeof("Auth-Status") - 1
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429 && ngx_strncasecmp(ctx->header_name_start, "Auth-Status",
|
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430 sizeof("Auth-Status") - 1) == 0)
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431 {
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432 len = ctx->header_end - ctx->header_start;
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433
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434 if (len == 2
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435 && ctx->header_start[0] == 'O'
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436 && ctx->header_start[1] == 'K')
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437 {
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438 continue;
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439 }
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440
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441 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
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442 size = sizeof("-ERR") - 1 + len + sizeof(CRLF) - 1;
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443
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444 } else {
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445 size = s->tag.len + sizeof("NO") - 1 + len
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446 + sizeof(CRLF) - 1;
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447 }
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448
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449 p = ngx_pcalloc(s->connection->pool, size);
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450 if (p == NULL) {
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451 ngx_imap_session_internal_server_error(s);
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452 return;
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453 }
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454
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455 ctx->err.data = p;
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456
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457 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
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458 *p++ = '-'; *p++ = 'E'; *p++ = 'R'; *p++ = 'R';
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459
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460 } else {
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461 p = ngx_cpymem(p, s->tag.data, s->tag.len);
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462 *p++ = 'N'; *p++ = 'O';
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463 }
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464
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465 *p++ = ' ';
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466 p = ngx_cpymem(p, ctx->header_start, len);
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467 *p++ = CR; *p++ = LF;
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468
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469 ctx->err.len = p - ctx->err.data;
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470
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471 continue;
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472 }
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473
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474 if (len == sizeof("Auth-Server") - 1
|
|
475 && ngx_strncasecmp(ctx->header_name_start, "Auth-Server",
|
|
476 sizeof("Auth-Server") - 1) == 0)
|
|
477 {
|
|
478 ctx->addr.len = ctx->header_end - ctx->header_start;
|
|
479 ctx->addr.data = ctx->header_start;
|
|
480
|
|
481 continue;
|
|
482 }
|
|
483
|
|
484 if (len == sizeof("Auth-Port") - 1
|
|
485 && ngx_strncasecmp(ctx->header_name_start, "Auth-Port",
|
|
486 sizeof("Auth-Port") - 1) == 0)
|
|
487 {
|
|
488 ctx->port.len = ctx->header_end - ctx->header_start;
|
|
489 ctx->port.data = ctx->header_start;
|
|
490
|
|
491 continue;
|
|
492 }
|
|
493
|
|
494 if (len == sizeof("Auth-User") - 1
|
|
495 && ngx_strncasecmp(ctx->header_name_start, "Auth-User",
|
|
496 sizeof("Auth-User") - 1) == 0)
|
|
497 {
|
|
498 s->login.len = ctx->header_end - ctx->header_start;
|
|
499 s->login.data = ctx->header_start;
|
|
500
|
|
501 continue;
|
|
502 }
|
|
503
|
|
504 if (len == sizeof("Auth-Wait") - 1
|
|
505 && ngx_strncasecmp(ctx->header_name_start, "Auth-Wait",
|
|
506 sizeof("Auth-Wait") - 1) == 0)
|
|
507 {
|
|
508 n = ngx_atoi(ctx->header_start,
|
|
509 ctx->header_end - ctx->header_start);
|
|
510
|
|
511 if (n != NGX_ERROR) {
|
|
512 ctx->sleep = n;
|
|
513 }
|
|
514
|
|
515 continue;
|
|
516 }
|
|
517
|
|
518 /* ignore other headers */
|
|
519
|
|
520 continue;
|
|
521 }
|
|
522
|
|
523 if (rc == NGX_DONE) {
|
|
524 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
525 "auth http header done");
|
|
526
|
|
527 ngx_close_connection(ctx->peer.connection);
|
|
528
|
|
529 if (ctx->err.len) {
|
539
|
530 s->out = ctx->err;
|
527
|
531
|
|
532 if (ctx->sleep == 0) {
|
539
|
533 s->quit = 1;
|
541
|
534
|
|
535 ngx_imap_send(s->connection->write);
|
527
|
536
|
541
|
537 return;
|
|
538 }
|
539
|
539
|
527
|
540 ngx_add_timer(s->connection->read, ctx->sleep * 1000);
|
|
541
|
|
542 s->connection->read->handler = ngx_imap_auth_sleep_handler;
|
|
543
|
|
544 return;
|
|
545 }
|
|
546
|
|
547 if (ctx->addr.len == 0 || ctx->port.len == 0) {
|
|
548 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
541
|
549 "auth http server %V did not send server or port",
|
|
550 &ctx->peer.peers->peer[0].name);
|
527
|
551 ngx_imap_session_internal_server_error(s);
|
|
552 return;
|
|
553 }
|
|
554
|
|
555 ctx->peers = ngx_pcalloc(s->connection->pool, sizeof(ngx_peers_t));
|
|
556 if (ctx->peers == NULL) {
|
|
557 ngx_imap_session_internal_server_error(s);
|
|
558 return;
|
|
559 }
|
|
560
|
|
561 sin = ngx_pcalloc(s->connection->pool, sizeof(struct sockaddr_in));
|
|
562 if (sin == NULL) {
|
|
563 ngx_imap_session_internal_server_error(s);
|
|
564 return;
|
|
565 }
|
|
566
|
|
567 sin->sin_family = AF_INET;
|
|
568
|
|
569 port = ngx_atoi(ctx->port.data, ctx->port.len);
|
|
570 if (port == NGX_ERROR || port < 1 || port > 65536) {
|
|
571 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
541
|
572 "auth http server %V sent invalid server "
|
|
573 "port:\"%V\"",
|
|
574 &ctx->peer.peers->peer[0].name, &ctx->port);
|
527
|
575 ngx_imap_session_internal_server_error(s);
|
|
576 return;
|
|
577 }
|
|
578
|
|
579 sin->sin_port = htons((in_port_t) port);
|
|
580
|
|
581 ctx->addr.data[ctx->addr.len] = '\0';
|
|
582 sin->sin_addr.s_addr = inet_addr((char *) ctx->addr.data);
|
|
583 if (sin->sin_addr.s_addr == INADDR_NONE) {
|
|
584 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
541
|
585 "auth http server %V sent invalid server "
|
|
586 "address:\"%V\"",
|
|
587 &ctx->peer.peers->peer[0].name, &ctx->addr);
|
527
|
588 ngx_imap_session_internal_server_error(s);
|
|
589 return;
|
|
590 }
|
|
591
|
|
592 ctx->peers->number = 1;
|
|
593
|
|
594 ctx->peers->peer[0].sockaddr = (struct sockaddr *) sin;
|
|
595 ctx->peers->peer[0].socklen = sizeof(struct sockaddr_in);
|
|
596
|
|
597 len = ctx->addr.len + 1 + ctx->port.len;
|
|
598
|
|
599 ctx->peers->peer[0].name.len = len;
|
|
600
|
|
601 ctx->peers->peer[0].name.data = ngx_palloc(s->connection->pool,
|
|
602 len);
|
|
603 if (ctx->peers->peer[0].name.data == NULL) {
|
|
604 ngx_imap_session_internal_server_error(s);
|
|
605 return;
|
|
606 }
|
|
607
|
|
608 len = ctx->addr.len;
|
|
609
|
|
610 ngx_memcpy(ctx->peers->peer[0].name.data, ctx->addr.data, len);
|
|
611
|
|
612 ctx->peers->peer[0].name.data[len++] = ':';
|
|
613
|
|
614 ngx_memcpy(ctx->peers->peer[0].name.data + len,
|
|
615 ctx->port.data, ctx->port.len);
|
|
616
|
|
617 ctx->peers->peer[0].uri_separator = "";
|
|
618
|
|
619 ngx_imap_proxy_init(s, ctx->peers);
|
|
620
|
|
621 return;
|
|
622 }
|
|
623
|
|
624 if (rc == NGX_AGAIN ) {
|
|
625 return;
|
|
626 }
|
|
627
|
|
628 /* rc == NGX_ERROR */
|
|
629
|
|
630 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
541
|
631 "auth http server %V sent invalid header in response",
|
|
632 &ctx->peer.peers->peer[0].name);
|
527
|
633 ngx_close_connection(ctx->peer.connection);
|
|
634 ngx_imap_session_internal_server_error(s);
|
|
635
|
|
636 return;
|
|
637 }
|
|
638 }
|
|
639
|
521
|
640
|
527
|
641 static void
|
|
642 ngx_imap_auth_sleep_handler(ngx_event_t *rev)
|
|
643 {
|
|
644 ngx_connection_t *c;
|
|
645 ngx_imap_session_t *s;
|
|
646
|
|
647 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap auth sleep handler");
|
|
648
|
|
649 c = rev->data;
|
|
650 s = c->data;
|
|
651
|
|
652 if (rev->timedout) {
|
|
653
|
|
654 rev->timedout = 0;
|
|
655
|
|
656 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
657 s->imap_state = ngx_pop3_start;
|
|
658 s->connection->read->handler = ngx_pop3_auth_state;
|
|
659
|
|
660 } else {
|
|
661 s->imap_state = ngx_imap_start;
|
|
662 s->connection->read->handler = ngx_imap_auth_state;
|
|
663 }
|
|
664
|
|
665 if (rev->ready) {
|
|
666 s->connection->read->handler(rev);
|
|
667 return;
|
|
668 }
|
|
669
|
|
670 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
671 ngx_imap_close_connection(s->connection);
|
|
672 }
|
|
673
|
541
|
674 ngx_imap_send(s->connection->write);
|
|
675
|
527
|
676 return;
|
|
677 }
|
|
678
|
|
679 if (rev->active) {
|
|
680 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
681 ngx_imap_close_connection(s->connection);
|
|
682 }
|
|
683 }
|
|
684 }
|
|
685
|
|
686
|
|
687 static ngx_int_t
|
|
688 ngx_imap_auth_http_parse_header_line(ngx_imap_session_t *s,
|
|
689 ngx_imap_auth_http_ctx_t *ctx)
|
|
690 {
|
|
691 u_char c, ch, *p;
|
|
692 ngx_uint_t hash;
|
|
693 enum {
|
|
694 sw_start = 0,
|
|
695 sw_name,
|
|
696 sw_space_before_value,
|
|
697 sw_value,
|
|
698 sw_space_after_value,
|
|
699 sw_almost_done,
|
|
700 sw_header_almost_done
|
|
701 } state;
|
|
702
|
|
703 state = ctx->state;
|
|
704 hash = ctx->hash;
|
|
705
|
|
706 for (p = ctx->response->pos; p < ctx->response->last; p++) {
|
|
707 ch = *p;
|
|
708
|
|
709 switch (state) {
|
|
710
|
|
711 /* first char */
|
|
712 case sw_start:
|
|
713
|
|
714 switch (ch) {
|
|
715 case CR:
|
|
716 ctx->header_end = p;
|
|
717 state = sw_header_almost_done;
|
|
718 break;
|
|
719 case LF:
|
|
720 ctx->header_end = p;
|
|
721 goto header_done;
|
|
722 default:
|
|
723 state = sw_name;
|
|
724 ctx->header_name_start = p;
|
|
725
|
|
726 c = (u_char) (ch | 0x20);
|
|
727 if (c >= 'a' && c <= 'z') {
|
|
728 hash = c;
|
|
729 break;
|
|
730 }
|
|
731
|
|
732 if (ch >= '0' && ch <= '9') {
|
|
733 hash = ch;
|
|
734 break;
|
|
735 }
|
|
736
|
|
737 return NGX_ERROR;
|
|
738 }
|
|
739 break;
|
|
740
|
|
741 /* header name */
|
|
742 case sw_name:
|
|
743 c = (u_char) (ch | 0x20);
|
|
744 if (c >= 'a' && c <= 'z') {
|
|
745 hash += c;
|
|
746 break;
|
|
747 }
|
|
748
|
|
749 if (ch == ':') {
|
|
750 ctx->header_name_end = p;
|
|
751 state = sw_space_before_value;
|
|
752 break;
|
|
753 }
|
|
754
|
|
755 if (ch == '-') {
|
|
756 hash += ch;
|
|
757 break;
|
|
758 }
|
|
759
|
|
760 if (ch >= '0' && ch <= '9') {
|
|
761 hash += ch;
|
|
762 break;
|
|
763 }
|
|
764
|
|
765 if (ch == CR) {
|
|
766 ctx->header_name_end = p;
|
|
767 ctx->header_start = p;
|
|
768 ctx->header_end = p;
|
|
769 state = sw_almost_done;
|
|
770 break;
|
|
771 }
|
|
772
|
|
773 if (ch == LF) {
|
|
774 ctx->header_name_end = p;
|
|
775 ctx->header_start = p;
|
|
776 ctx->header_end = p;
|
|
777 goto done;
|
|
778 }
|
|
779
|
|
780 return NGX_ERROR;
|
|
781
|
|
782 /* space* before header value */
|
|
783 case sw_space_before_value:
|
|
784 switch (ch) {
|
|
785 case ' ':
|
|
786 break;
|
|
787 case CR:
|
|
788 ctx->header_start = p;
|
|
789 ctx->header_end = p;
|
|
790 state = sw_almost_done;
|
|
791 break;
|
|
792 case LF:
|
|
793 ctx->header_start = p;
|
|
794 ctx->header_end = p;
|
|
795 goto done;
|
|
796 default:
|
|
797 ctx->header_start = p;
|
|
798 state = sw_value;
|
|
799 break;
|
|
800 }
|
|
801 break;
|
|
802
|
|
803 /* header value */
|
|
804 case sw_value:
|
|
805 switch (ch) {
|
|
806 case ' ':
|
|
807 ctx->header_end = p;
|
|
808 state = sw_space_after_value;
|
|
809 break;
|
|
810 case CR:
|
|
811 ctx->header_end = p;
|
|
812 state = sw_almost_done;
|
|
813 break;
|
|
814 case LF:
|
|
815 ctx->header_end = p;
|
|
816 goto done;
|
|
817 }
|
|
818 break;
|
|
819
|
|
820 /* space* before end of header line */
|
|
821 case sw_space_after_value:
|
|
822 switch (ch) {
|
|
823 case ' ':
|
|
824 break;
|
|
825 case CR:
|
|
826 state = sw_almost_done;
|
|
827 break;
|
|
828 case LF:
|
|
829 goto done;
|
|
830 default:
|
|
831 state = sw_value;
|
|
832 break;
|
|
833 }
|
|
834 break;
|
|
835
|
|
836 /* end of header line */
|
|
837 case sw_almost_done:
|
|
838 switch (ch) {
|
|
839 case LF:
|
|
840 goto done;
|
|
841 default:
|
|
842 return NGX_ERROR;
|
|
843 }
|
|
844
|
|
845 /* end of header */
|
|
846 case sw_header_almost_done:
|
|
847 switch (ch) {
|
|
848 case LF:
|
|
849 goto header_done;
|
|
850 default:
|
|
851 return NGX_ERROR;
|
|
852 }
|
|
853 }
|
|
854 }
|
|
855
|
|
856 ctx->response->pos = p;
|
|
857 ctx->state = state;
|
|
858 ctx->hash = hash;
|
|
859
|
|
860 return NGX_AGAIN;
|
|
861
|
|
862 done:
|
|
863
|
|
864 ctx->response->pos = p + 1;
|
|
865 ctx->state = sw_start;
|
|
866 ctx->hash = hash;
|
|
867
|
|
868 return NGX_OK;
|
|
869
|
|
870 header_done:
|
|
871
|
|
872 ctx->response->pos = p + 1;
|
|
873 ctx->state = sw_start;
|
|
874
|
|
875 return NGX_DONE;
|
521
|
876 }
|
|
877
|
|
878
|
|
879 static void
|
|
880 ngx_imap_auth_http_block_read(ngx_event_t *rev)
|
|
881 {
|
|
882 ngx_connection_t *c;
|
|
883 ngx_imap_session_t *s;
|
|
884 ngx_imap_auth_http_ctx_t *ctx;
|
|
885
|
|
886 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
|
|
887 "imap auth http block read");
|
|
888
|
|
889 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
890 c = rev->data;
|
|
891 s = c->data;
|
|
892
|
|
893 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
|
|
894
|
525
|
895 ngx_close_connection(ctx->peer.connection);
|
|
896 ngx_imap_session_internal_server_error(s);
|
521
|
897 }
|
|
898 }
|
|
899
|
|
900
|
|
901 static void
|
|
902 ngx_imap_auth_http_dummy_handler(ngx_event_t *ev)
|
|
903 {
|
|
904 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
905 "imap auth http dummy handler");
|
|
906 }
|
|
907
|
|
908
|
|
909 static ngx_buf_t *
|
|
910 ngx_imap_auth_http_create_request(ngx_imap_session_t *s,
|
|
911 ngx_imap_auth_http_conf_t *ahcf)
|
|
912 {
|
|
913 size_t len;
|
|
914 ngx_buf_t *b;
|
|
915
|
|
916 len = sizeof("GET ") - 1 + ahcf->uri.len + sizeof(" HTTP/1.0" CRLF) - 1
|
|
917 + sizeof("Host: ") - 1 + ahcf->host_header.len + sizeof(CRLF) - 1
|
|
918 + sizeof("Auth-Method: plain" CRLF) - 1
|
|
919 + sizeof("Auth-User: ") - 1 + s->login.len + sizeof(CRLF) - 1
|
|
920 + sizeof("Auth-Pass: ") - 1 + s->passwd.len + sizeof(CRLF) - 1
|
|
921 + sizeof("Auth-Protocol: imap" CRLF) - 1
|
527
|
922 + sizeof("Auth-Login-Attempt: ") - 1 + NGX_INT_T_LEN
|
|
923 + sizeof(CRLF) - 1
|
521
|
924 + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
|
|
925 + sizeof(CRLF) - 1
|
|
926 + sizeof(CRLF) - 1;
|
|
927
|
|
928 b = ngx_create_temp_buf(s->connection->pool, len);
|
|
929 if (b == NULL) {
|
|
930 return NULL;
|
|
931 }
|
|
932
|
|
933 b->last = ngx_cpymem(b->last, "GET ", sizeof("GET ") - 1);
|
|
934 b->last = ngx_cpymem(b->last, ahcf->uri.data, ahcf->uri.len);
|
|
935 b->last = ngx_cpymem(b->last, " HTTP/1.0" CRLF,
|
|
936 sizeof(" HTTP/1.0" CRLF) - 1);
|
|
937
|
|
938 b->last = ngx_cpymem(b->last, "Host: ", sizeof("Host: ") - 1);
|
|
939 b->last = ngx_cpymem(b->last, ahcf->host_header.data,
|
|
940 ahcf->host_header.len);
|
|
941 *b->last++ = CR; *b->last++ = LF;
|
|
942
|
|
943 b->last = ngx_cpymem(b->last, "Auth-Method: plain" CRLF,
|
|
944 sizeof("Auth-Method: plain" CRLF) - 1);
|
|
945
|
|
946 b->last = ngx_cpymem(b->last, "Auth-User: ", sizeof("Auth-User: ") - 1);
|
|
947 b->last = ngx_cpymem(b->last, s->login.data, s->login.len);
|
|
948 *b->last++ = CR; *b->last++ = LF;
|
|
949
|
|
950 b->last = ngx_cpymem(b->last, "Auth-Pass: ", sizeof("Auth-Pass: ") - 1);
|
|
951 b->last = ngx_cpymem(b->last, s->passwd.data, s->passwd.len);
|
|
952 *b->last++ = CR; *b->last++ = LF;
|
|
953
|
|
954 b->last = ngx_cpymem(b->last, "Auth-Protocol: ",
|
|
955 sizeof("Auth-Protocol: ") - 1);
|
|
956 b->last = ngx_cpymem(b->last, ngx_imap_auth_http_protocol[s->protocol],
|
|
957 sizeof("imap") - 1);
|
|
958 *b->last++ = CR; *b->last++ = LF;
|
|
959
|
527
|
960 b->last = ngx_sprintf(b->last, "Auth-Login-Attempt: %ui" CRLF,
|
|
961 s->login_attempt);
|
|
962
|
521
|
963 b->last = ngx_cpymem(b->last, "Client-IP: ", sizeof("Client-IP: ") - 1);
|
|
964 b->last = ngx_cpymem(b->last, s->connection->addr_text.data,
|
|
965 s->connection->addr_text.len);
|
|
966 *b->last++ = CR; *b->last++ = LF;
|
|
967
|
|
968 /* add "\r\n" at the header end */
|
|
969 *b->last++ = CR; *b->last++ = LF;
|
|
970
|
|
971 #if (NGX_DEBUG)
|
|
972 {
|
|
973 ngx_str_t l;
|
|
974
|
|
975 l.len = b->last - b->pos;
|
|
976 l.data = b->pos;
|
527
|
977 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
521
|
978 "imap auth http header:\n\"%V\"", &l);
|
|
979 }
|
|
980 #endif
|
|
981
|
|
982 return b;
|
|
983 }
|
|
984
|
|
985
|
|
986 static void *
|
|
987 ngx_imap_auth_http_create_conf(ngx_conf_t *cf)
|
|
988 {
|
|
989 ngx_imap_auth_http_conf_t *ahcf;
|
|
990
|
|
991 ahcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_auth_http_conf_t));
|
|
992 if (ahcf == NULL) {
|
|
993 return NGX_CONF_ERROR;
|
|
994 }
|
|
995
|
|
996 ahcf->timeout = NGX_CONF_UNSET_MSEC;
|
|
997
|
|
998 return ahcf;
|
|
999 }
|
|
1000
|
|
1001
|
|
1002 static char *
|
|
1003 ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
1004 {
|
|
1005 ngx_imap_auth_http_conf_t *prev = parent;
|
|
1006 ngx_imap_auth_http_conf_t *conf = child;
|
|
1007
|
|
1008 if (conf->peers == NULL) {
|
|
1009 conf->peers = prev->peers;
|
|
1010 conf->host_header = prev->host_header;
|
|
1011 conf->uri = prev->uri;
|
|
1012 }
|
|
1013
|
|
1014 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
|
|
1015
|
|
1016 return NGX_CONF_OK;
|
|
1017 }
|
|
1018
|
|
1019
|
|
1020 static char *
|
|
1021 ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
1022 {
|
|
1023 ngx_imap_auth_http_conf_t *ahcf = conf;
|
|
1024
|
|
1025 ngx_uint_t i;
|
|
1026 ngx_str_t *value, *url;
|
|
1027 ngx_inet_upstream_t inet_upstream;
|
|
1028 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
1029 ngx_unix_domain_upstream_t unix_upstream;
|
|
1030 #endif
|
|
1031
|
|
1032 value = cf->args->elts;
|
|
1033
|
|
1034 url = &value[1];
|
|
1035
|
|
1036 if (ngx_strncasecmp(url->data, "unix:", 5) == 0) {
|
|
1037
|
|
1038 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
1039
|
|
1040 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
1041
|
|
1042 unix_upstream.name = *url;
|
|
1043 unix_upstream.url = *url;
|
|
1044 unix_upstream.uri_part = 1;
|
|
1045
|
|
1046 ahcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
|
|
1047 if (ahcf->peers == NULL) {
|
|
1048 return NGX_CONF_ERROR;
|
|
1049 }
|
|
1050
|
|
1051 ahcf->peers->peer[0].uri_separator = ":";
|
|
1052
|
|
1053 ahcf->host_header.len = sizeof("localhost") - 1;
|
|
1054 ahcf->host_header.data = (u_char *) "localhost";
|
|
1055 ahcf->uri = unix_upstream.uri;
|
|
1056
|
|
1057 #else
|
|
1058 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
1059 "the unix domain sockets are not supported "
|
|
1060 "on this platform");
|
|
1061 return NGX_CONF_ERROR;
|
|
1062
|
|
1063 #endif
|
|
1064
|
|
1065 } else {
|
|
1066 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
1067
|
|
1068 inet_upstream.name = *url;
|
|
1069 inet_upstream.url = *url;
|
|
1070 inet_upstream.default_port_value = 80;
|
|
1071 inet_upstream.uri_part = 1;
|
|
1072
|
|
1073 ahcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
|
|
1074 if (ahcf->peers == NULL) {
|
|
1075 return NGX_CONF_ERROR;
|
|
1076 }
|
|
1077
|
|
1078 for (i = 0; i < ahcf->peers->number; i++) {
|
527
|
1079 ahcf->peers->peer[i].uri_separator = "";
|
521
|
1080 }
|
|
1081
|
|
1082 ahcf->host_header = inet_upstream.host_header;
|
|
1083 ahcf->uri = inet_upstream.uri;
|
|
1084 }
|
|
1085
|
|
1086 return NGX_CONF_OK;
|
|
1087 }
|