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76
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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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15 ngx_peers_t *peers;
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16
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17 ngx_msec_t timeout;
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18
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19 ngx_str_t host_header;
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20 ngx_str_t uri;
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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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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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116
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47 ngx_str_t errmsg;
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76
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48
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96
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49 time_t sleep;
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76
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50
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96
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51 ngx_pool_t *pool;
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76
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52 };
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53
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54
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55 static void ngx_imap_auth_http_write_handler(ngx_event_t *wev);
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56 static void ngx_imap_auth_http_read_handler(ngx_event_t *rev);
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57 static void ngx_imap_auth_http_ignore_status_line(ngx_imap_session_t *s,
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58 ngx_imap_auth_http_ctx_t *ctx);
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59 static void ngx_imap_auth_http_process_headers(ngx_imap_session_t *s,
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60 ngx_imap_auth_http_ctx_t *ctx);
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61 static void ngx_imap_auth_sleep_handler(ngx_event_t *rev);
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62 static ngx_int_t ngx_imap_auth_http_parse_header_line(ngx_imap_session_t *s,
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63 ngx_imap_auth_http_ctx_t *ctx);
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64 static void ngx_imap_auth_http_block_read(ngx_event_t *rev);
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65 static void ngx_imap_auth_http_dummy_handler(ngx_event_t *ev);
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66 static ngx_buf_t *ngx_imap_auth_http_create_request(ngx_imap_session_t *s,
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96
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67 ngx_pool_t *pool, ngx_imap_auth_http_conf_t *ahcf);
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76
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68
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69 static void *ngx_imap_auth_http_create_conf(ngx_conf_t *cf);
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70 static char *ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent,
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71 void *child);
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72 static char *ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
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73
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74
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75 static ngx_command_t ngx_imap_auth_http_commands[] = {
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76
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77 { ngx_string("auth_http"),
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78 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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79 ngx_imap_auth_http,
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80 NGX_IMAP_SRV_CONF_OFFSET,
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81 0,
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82 NULL },
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83
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84 { ngx_string("auth_http_timeout"),
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85 NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1,
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86 ngx_conf_set_msec_slot,
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87 NGX_IMAP_SRV_CONF_OFFSET,
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88 offsetof(ngx_imap_auth_http_conf_t, timeout),
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89 NULL },
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90
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91 ngx_null_command
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92 };
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93
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94
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95 static ngx_imap_module_t ngx_imap_auth_http_module_ctx = {
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96 NULL, /* create main configuration */
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97 NULL, /* init main configuration */
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98
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99 ngx_imap_auth_http_create_conf, /* create server configuration */
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100 ngx_imap_auth_http_merge_conf /* merge server configuration */
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101 };
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102
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103
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104 ngx_module_t ngx_imap_auth_http_module = {
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105 NGX_MODULE_V1,
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106 &ngx_imap_auth_http_module_ctx, /* module context */
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107 ngx_imap_auth_http_commands, /* module directives */
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108 NGX_IMAP_MODULE, /* module type */
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90
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109 NULL, /* init master */
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76
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110 NULL, /* init module */
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90
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111 NULL, /* init process */
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112 NULL, /* init thread */
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113 NULL, /* exit thread */
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114 NULL, /* exit process */
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115 NULL, /* exit master */
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116 NGX_MODULE_V1_PADDING
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76
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117 };
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118
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119
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120 static char *ngx_imap_auth_http_protocol[] = { "pop3", "imap" };
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121
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122
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123 void
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124 ngx_imap_auth_http_init(ngx_imap_session_t *s)
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125 {
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126 ngx_int_t rc;
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96
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127 ngx_pool_t *pool;
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76
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128 ngx_imap_auth_http_ctx_t *ctx;
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129 ngx_imap_auth_http_conf_t *ahcf;
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130
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90
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131 s->connection->log->action = "in http auth state";
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132
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96
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133 pool = ngx_create_pool(2048, s->connection->log);
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134 if (pool == NULL) {
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76
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135 ngx_imap_session_internal_server_error(s);
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136 return;
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137 }
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138
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96
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139 ctx = ngx_pcalloc(pool, sizeof(ngx_imap_auth_http_ctx_t));
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140 if (ctx == NULL) {
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141 ngx_destroy_pool(pool);
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142 ngx_imap_session_internal_server_error(s);
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143 return;
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144 }
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145
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146 ctx->pool = pool;
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147
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76
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148 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
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149
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96
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150 ctx->request = ngx_imap_auth_http_create_request(s, pool, ahcf);
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76
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151 if (ctx->request == NULL) {
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96
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152 ngx_destroy_pool(ctx->pool);
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76
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153 ngx_imap_session_internal_server_error(s);
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154 return;
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155 }
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156
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157 ngx_imap_set_ctx(s, ctx, ngx_imap_auth_http_module);
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158
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159 ctx->peer.peers = ahcf->peers;
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160 ctx->peer.log = s->connection->log;
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161 ctx->peer.log_error = NGX_ERROR_ERR;
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162
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163 rc = ngx_event_connect_peer(&ctx->peer);
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164
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92
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165 if (rc == NGX_ERROR || rc == NGX_BUSY || rc == NGX_DECLINED) {
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166 ngx_close_connection(ctx->peer.connection);
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96
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167 ngx_destroy_pool(ctx->pool);
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76
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168 ngx_imap_session_internal_server_error(s);
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169 return;
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170 }
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171
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172 ctx->peer.connection->data = s;
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173 ctx->peer.connection->pool = s->connection->pool;
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174
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175 s->connection->read->handler = ngx_imap_auth_http_block_read;
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176 ctx->peer.connection->read->handler = ngx_imap_auth_http_read_handler;
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177 ctx->peer.connection->write->handler = ngx_imap_auth_http_write_handler;
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178
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179 ctx->handler = ngx_imap_auth_http_ignore_status_line;
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180
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90
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181 ngx_add_timer(ctx->peer.connection->read, ahcf->timeout);
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182 ngx_add_timer(ctx->peer.connection->write, ahcf->timeout);
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183
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76
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184 if (rc == NGX_OK) {
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185 ngx_imap_auth_http_write_handler(ctx->peer.connection->write);
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186 return;
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187 }
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188 }
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189
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190
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191 static void
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192 ngx_imap_auth_http_write_handler(ngx_event_t *wev)
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193 {
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194 ssize_t n, size;
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195 ngx_connection_t *c;
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196 ngx_imap_session_t *s;
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197 ngx_imap_auth_http_ctx_t *ctx;
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198 ngx_imap_auth_http_conf_t *ahcf;
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199
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200 c = wev->data;
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201 s = c->data;
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202
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203 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
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204
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205 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, wev->log, 0,
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206 "imap auth http write handler");
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207
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208 if (wev->timedout) {
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209 ngx_log_error(NGX_LOG_ERR, wev->log, NGX_ETIMEDOUT,
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90
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210 "auth http server %V timed out",
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211 &ctx->peer.peers->peer[0].name);
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76
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212 ngx_close_connection(ctx->peer.connection);
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96
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213 ngx_destroy_pool(ctx->pool);
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76
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214 ngx_imap_session_internal_server_error(s);
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215 return;
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216 }
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217
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218 size = ctx->request->last - ctx->request->pos;
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219
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220 n = ngx_send(c, ctx->request->pos, size);
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221
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222 if (n == NGX_ERROR) {
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223 ngx_close_connection(ctx->peer.connection);
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96
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224 ngx_destroy_pool(ctx->pool);
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76
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225 ngx_imap_session_internal_server_error(s);
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226 return;
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227 }
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228
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229 if (n > 0) {
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230 ctx->request->pos += n;
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231
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232 if (n == size) {
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233 wev->handler = ngx_imap_auth_http_dummy_handler;
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234
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235 if (wev->timer_set) {
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236 ngx_del_timer(wev);
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237 }
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238
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239 return;
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240 }
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241 }
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242
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243 if (!wev->timer_set) {
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244 ahcf = ngx_imap_get_module_srv_conf(s, ngx_imap_auth_http_module);
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245 ngx_add_timer(wev, ahcf->timeout);
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246 }
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247 }
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248
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249
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250 static void
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251 ngx_imap_auth_http_read_handler(ngx_event_t *rev)
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252 {
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253 ssize_t n, size;
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254 ngx_connection_t *c;
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255 ngx_imap_session_t *s;
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256 ngx_imap_auth_http_ctx_t *ctx;
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257
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258 c = rev->data;
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259 s = c->data;
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260
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261 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
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262 "imap auth http read handler");
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263
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264 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
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265
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266 if (rev->timedout) {
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267 ngx_log_error(NGX_LOG_ERR, rev->log, NGX_ETIMEDOUT,
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90
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268 "auth http server %V timed out",
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269 &ctx->peer.peers->peer[0].name);
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76
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270 ngx_close_connection(ctx->peer.connection);
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96
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271 ngx_destroy_pool(ctx->pool);
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76
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272 ngx_imap_session_internal_server_error(s);
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273 return;
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274 }
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275
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276 if (ctx->response == NULL) {
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96
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277 ctx->response = ngx_create_temp_buf(ctx->pool, 1024);
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76
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278 if (ctx->response == NULL) {
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279 ngx_close_connection(ctx->peer.connection);
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96
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280 ngx_destroy_pool(ctx->pool);
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76
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281 ngx_imap_session_internal_server_error(s);
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282 return;
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283 }
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284 }
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285
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286 size = ctx->response->end - ctx->response->last;
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287
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288 n = ngx_recv(c, ctx->response->pos, size);
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289
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290 if (n > 0) {
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291 ctx->response->last += n;
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292
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293 ctx->handler(s, ctx);
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294 return;
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295 }
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296
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297 if (n == NGX_AGAIN) {
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298 return;
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299 }
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300
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301 ngx_close_connection(ctx->peer.connection);
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96
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302 ngx_destroy_pool(ctx->pool);
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76
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303 ngx_imap_session_internal_server_error(s);
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304 }
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305
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306
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307 static void
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308 ngx_imap_auth_http_ignore_status_line(ngx_imap_session_t *s,
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309 ngx_imap_auth_http_ctx_t *ctx)
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310 {
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311 u_char *p, ch;
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312 enum {
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313 sw_start = 0,
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314 sw_H,
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315 sw_HT,
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316 sw_HTT,
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317 sw_HTTP,
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318 sw_skip,
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319 sw_almost_done
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320 } state;
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321
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322 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
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323 "imap auth http process status line");
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324
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325 state = ctx->state;
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326
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327 for (p = ctx->response->pos; p < ctx->response->last; p++) {
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328 ch = *p;
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329
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330 switch (state) {
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331
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332 /* "HTTP/" */
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333 case sw_start:
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334 if (ch == 'H') {
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335 state = sw_H;
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336 break;
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337 }
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338 goto next;
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339
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340 case sw_H:
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341 if (ch == 'T') {
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342 state = sw_HT;
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343 break;
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344 }
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345 goto next;
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346
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347 case sw_HT:
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348 if (ch == 'T') {
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349 state = sw_HTT;
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350 break;
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351 }
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352 goto next;
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353
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354 case sw_HTT:
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355 if (ch == 'P') {
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356 state = sw_HTTP;
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357 break;
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358 }
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359 goto next;
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360
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361 case sw_HTTP:
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362 if (ch == '/') {
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363 state = sw_skip;
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364 break;
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365 }
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366 goto next;
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367
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368 /* any text until end of line */
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369 case sw_skip:
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370 switch (ch) {
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371 case CR:
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372 state = sw_almost_done;
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373
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374 break;
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375 case LF:
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376 goto done;
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377 }
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378 break;
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379
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380 /* end of status line */
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381 case sw_almost_done:
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382 if (ch == LF) {
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383 goto done;
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384 }
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385
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386 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
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90
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387 "auth http server &V sent invalid response",
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388 &ctx->peer.peers->peer[0].name);
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76
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389 ngx_close_connection(ctx->peer.connection);
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96
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390 ngx_destroy_pool(ctx->pool);
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76
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391 ngx_imap_session_internal_server_error(s);
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392 return;
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393 }
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394 }
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395
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396 ctx->response->pos = p;
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397 ctx->state = state;
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398
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399 return;
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400
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401 next:
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402
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403 p = ctx->response->start - 1;
|
|
|
404
|
|
|
405 done:
|
|
|
406
|
|
|
407 ctx->response->pos = p + 1;
|
|
|
408 ctx->state = 0;
|
|
|
409 ctx->handler = ngx_imap_auth_http_process_headers;
|
|
|
410 ctx->handler(s, ctx);
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static void
|
|
|
415 ngx_imap_auth_http_process_headers(ngx_imap_session_t *s,
|
|
|
416 ngx_imap_auth_http_ctx_t *ctx)
|
|
|
417 {
|
|
|
418 u_char *p;
|
|
96
|
419 time_t timer;
|
|
76
|
420 size_t len, size;
|
|
|
421 ngx_int_t rc, port, n;
|
|
96
|
422 ngx_peers_t *peers;
|
|
76
|
423 struct sockaddr_in *sin;
|
|
|
424
|
|
|
425 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
426 "imap auth http process headers");
|
|
|
427
|
|
|
428 for ( ;; ) {
|
|
|
429 rc = ngx_imap_auth_http_parse_header_line(s, ctx);
|
|
|
430
|
|
|
431 if (rc == NGX_OK) {
|
|
|
432
|
|
|
433 #if (NGX_DEBUG)
|
|
|
434 {
|
|
|
435 ngx_str_t key, value;
|
|
|
436
|
|
|
437 key.len = ctx->header_name_end - ctx->header_name_start;
|
|
|
438 key.data = ctx->header_name_start;
|
|
|
439 value.len = ctx->header_end - ctx->header_start;
|
|
|
440 value.data = ctx->header_start;
|
|
|
441
|
|
|
442 ngx_log_debug2(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
443 "auth http header: \"%V: %V\"",
|
|
|
444 &key, &value);
|
|
|
445 }
|
|
|
446 #endif
|
|
|
447
|
|
|
448 len = ctx->header_name_end - ctx->header_name_start;
|
|
|
449
|
|
|
450 if (len == sizeof("Auth-Status") - 1
|
|
|
451 && ngx_strncasecmp(ctx->header_name_start, "Auth-Status",
|
|
|
452 sizeof("Auth-Status") - 1) == 0)
|
|
|
453 {
|
|
|
454 len = ctx->header_end - ctx->header_start;
|
|
|
455
|
|
|
456 if (len == 2
|
|
|
457 && ctx->header_start[0] == 'O'
|
|
|
458 && ctx->header_start[1] == 'K')
|
|
|
459 {
|
|
|
460 continue;
|
|
|
461 }
|
|
|
462
|
|
116
|
463 ctx->errmsg.len = len;
|
|
|
464 ctx->errmsg.data = ctx->header_start;
|
|
|
465
|
|
76
|
466 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
|
467 size = sizeof("-ERR") - 1 + len + sizeof(CRLF) - 1;
|
|
|
468
|
|
|
469 } else {
|
|
|
470 size = s->tag.len + sizeof("NO") - 1 + len
|
|
|
471 + sizeof(CRLF) - 1;
|
|
|
472 }
|
|
|
473
|
|
|
474 p = ngx_pcalloc(s->connection->pool, size);
|
|
|
475 if (p == NULL) {
|
|
92
|
476 ngx_close_connection(ctx->peer.connection);
|
|
96
|
477 ngx_destroy_pool(ctx->pool);
|
|
76
|
478 ngx_imap_session_internal_server_error(s);
|
|
|
479 return;
|
|
|
480 }
|
|
|
481
|
|
|
482 ctx->err.data = p;
|
|
|
483
|
|
|
484 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
|
485 *p++ = '-'; *p++ = 'E'; *p++ = 'R'; *p++ = 'R';
|
|
|
486
|
|
|
487 } else {
|
|
|
488 p = ngx_cpymem(p, s->tag.data, s->tag.len);
|
|
|
489 *p++ = 'N'; *p++ = 'O';
|
|
|
490 }
|
|
|
491
|
|
|
492 *p++ = ' ';
|
|
116
|
493
|
|
76
|
494 p = ngx_cpymem(p, ctx->header_start, len);
|
|
|
495 *p++ = CR; *p++ = LF;
|
|
|
496
|
|
|
497 ctx->err.len = p - ctx->err.data;
|
|
|
498
|
|
|
499 continue;
|
|
|
500 }
|
|
|
501
|
|
|
502 if (len == sizeof("Auth-Server") - 1
|
|
|
503 && ngx_strncasecmp(ctx->header_name_start, "Auth-Server",
|
|
|
504 sizeof("Auth-Server") - 1) == 0)
|
|
|
505 {
|
|
|
506 ctx->addr.len = ctx->header_end - ctx->header_start;
|
|
|
507 ctx->addr.data = ctx->header_start;
|
|
|
508
|
|
|
509 continue;
|
|
|
510 }
|
|
|
511
|
|
|
512 if (len == sizeof("Auth-Port") - 1
|
|
|
513 && ngx_strncasecmp(ctx->header_name_start, "Auth-Port",
|
|
|
514 sizeof("Auth-Port") - 1) == 0)
|
|
|
515 {
|
|
|
516 ctx->port.len = ctx->header_end - ctx->header_start;
|
|
|
517 ctx->port.data = ctx->header_start;
|
|
|
518
|
|
|
519 continue;
|
|
|
520 }
|
|
|
521
|
|
|
522 if (len == sizeof("Auth-User") - 1
|
|
|
523 && ngx_strncasecmp(ctx->header_name_start, "Auth-User",
|
|
|
524 sizeof("Auth-User") - 1) == 0)
|
|
|
525 {
|
|
|
526 s->login.len = ctx->header_end - ctx->header_start;
|
|
116
|
527
|
|
|
528 s->login.data = ngx_palloc(s->connection->pool, s->login.len);
|
|
|
529 if (s->login.data == NULL) {
|
|
|
530 ngx_close_connection(ctx->peer.connection);
|
|
|
531 ngx_destroy_pool(ctx->pool);
|
|
|
532 ngx_imap_session_internal_server_error(s);
|
|
|
533 return;
|
|
|
534 }
|
|
|
535
|
|
|
536 ngx_memcpy(s->login.data, ctx->header_start, s->login.len);
|
|
76
|
537
|
|
|
538 continue;
|
|
|
539 }
|
|
|
540
|
|
|
541 if (len == sizeof("Auth-Wait") - 1
|
|
|
542 && ngx_strncasecmp(ctx->header_name_start, "Auth-Wait",
|
|
|
543 sizeof("Auth-Wait") - 1) == 0)
|
|
|
544 {
|
|
|
545 n = ngx_atoi(ctx->header_start,
|
|
|
546 ctx->header_end - ctx->header_start);
|
|
|
547
|
|
|
548 if (n != NGX_ERROR) {
|
|
|
549 ctx->sleep = n;
|
|
|
550 }
|
|
|
551
|
|
|
552 continue;
|
|
|
553 }
|
|
|
554
|
|
|
555 /* ignore other headers */
|
|
|
556
|
|
|
557 continue;
|
|
|
558 }
|
|
|
559
|
|
|
560 if (rc == NGX_DONE) {
|
|
|
561 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
562 "auth http header done");
|
|
|
563
|
|
|
564 ngx_close_connection(ctx->peer.connection);
|
|
|
565
|
|
|
566 if (ctx->err.len) {
|
|
116
|
567 ngx_log_error(NGX_LOG_INFO, s->connection->log, 0,
|
|
|
568 "client login failed: \"%V\"", &ctx->errmsg);
|
|
|
569
|
|
88
|
570 s->out = ctx->err;
|
|
96
|
571 timer = ctx->sleep;
|
|
76
|
572
|
|
96
|
573 ngx_destroy_pool(ctx->pool);
|
|
|
574
|
|
|
575 if (timer == 0) {
|
|
88
|
576 s->quit = 1;
|
|
90
|
577 ngx_imap_send(s->connection->write);
|
|
|
578 return;
|
|
|
579 }
|
|
88
|
580
|
|
96
|
581 ngx_add_timer(s->connection->read, timer * 1000);
|
|
76
|
582
|
|
|
583 s->connection->read->handler = ngx_imap_auth_sleep_handler;
|
|
|
584
|
|
|
585 return;
|
|
|
586 }
|
|
|
587
|
|
|
588 if (ctx->addr.len == 0 || ctx->port.len == 0) {
|
|
|
589 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
90
|
590 "auth http server %V did not send server or port",
|
|
|
591 &ctx->peer.peers->peer[0].name);
|
|
96
|
592 ngx_destroy_pool(ctx->pool);
|
|
76
|
593 ngx_imap_session_internal_server_error(s);
|
|
|
594 return;
|
|
|
595 }
|
|
|
596
|
|
96
|
597 peers = ngx_pcalloc(s->connection->pool, sizeof(ngx_peers_t));
|
|
|
598 if (peers == NULL) {
|
|
|
599 ngx_destroy_pool(ctx->pool);
|
|
76
|
600 ngx_imap_session_internal_server_error(s);
|
|
|
601 return;
|
|
|
602 }
|
|
|
603
|
|
|
604 sin = ngx_pcalloc(s->connection->pool, sizeof(struct sockaddr_in));
|
|
|
605 if (sin == NULL) {
|
|
96
|
606 ngx_destroy_pool(ctx->pool);
|
|
76
|
607 ngx_imap_session_internal_server_error(s);
|
|
|
608 return;
|
|
|
609 }
|
|
|
610
|
|
|
611 sin->sin_family = AF_INET;
|
|
|
612
|
|
|
613 port = ngx_atoi(ctx->port.data, ctx->port.len);
|
|
|
614 if (port == NGX_ERROR || port < 1 || port > 65536) {
|
|
|
615 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
90
|
616 "auth http server %V sent invalid server "
|
|
|
617 "port:\"%V\"",
|
|
|
618 &ctx->peer.peers->peer[0].name, &ctx->port);
|
|
96
|
619 ngx_destroy_pool(ctx->pool);
|
|
76
|
620 ngx_imap_session_internal_server_error(s);
|
|
|
621 return;
|
|
|
622 }
|
|
|
623
|
|
|
624 sin->sin_port = htons((in_port_t) port);
|
|
|
625
|
|
|
626 ctx->addr.data[ctx->addr.len] = '\0';
|
|
|
627 sin->sin_addr.s_addr = inet_addr((char *) ctx->addr.data);
|
|
|
628 if (sin->sin_addr.s_addr == INADDR_NONE) {
|
|
|
629 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
90
|
630 "auth http server %V sent invalid server "
|
|
|
631 "address:\"%V\"",
|
|
|
632 &ctx->peer.peers->peer[0].name, &ctx->addr);
|
|
96
|
633 ngx_destroy_pool(ctx->pool);
|
|
76
|
634 ngx_imap_session_internal_server_error(s);
|
|
|
635 return;
|
|
|
636 }
|
|
|
637
|
|
96
|
638 peers->number = 1;
|
|
76
|
639
|
|
96
|
640 peers->peer[0].sockaddr = (struct sockaddr *) sin;
|
|
|
641 peers->peer[0].socklen = sizeof(struct sockaddr_in);
|
|
76
|
642
|
|
|
643 len = ctx->addr.len + 1 + ctx->port.len;
|
|
|
644
|
|
96
|
645 peers->peer[0].name.len = len;
|
|
76
|
646
|
|
96
|
647 peers->peer[0].name.data = ngx_palloc(s->connection->pool, len);
|
|
|
648 if (peers->peer[0].name.data == NULL) {
|
|
|
649 ngx_destroy_pool(ctx->pool);
|
|
76
|
650 ngx_imap_session_internal_server_error(s);
|
|
|
651 return;
|
|
|
652 }
|
|
|
653
|
|
|
654 len = ctx->addr.len;
|
|
|
655
|
|
96
|
656 ngx_memcpy(peers->peer[0].name.data, ctx->addr.data, len);
|
|
76
|
657
|
|
96
|
658 peers->peer[0].name.data[len++] = ':';
|
|
76
|
659
|
|
96
|
660 ngx_memcpy(peers->peer[0].name.data + len,
|
|
76
|
661 ctx->port.data, ctx->port.len);
|
|
|
662
|
|
96
|
663 peers->peer[0].uri_separator = "";
|
|
76
|
664
|
|
96
|
665 ngx_destroy_pool(ctx->pool);
|
|
|
666 ngx_imap_proxy_init(s, peers);
|
|
76
|
667
|
|
|
668 return;
|
|
|
669 }
|
|
|
670
|
|
|
671 if (rc == NGX_AGAIN ) {
|
|
|
672 return;
|
|
|
673 }
|
|
|
674
|
|
|
675 /* rc == NGX_ERROR */
|
|
|
676
|
|
|
677 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
|
|
90
|
678 "auth http server %V sent invalid header in response",
|
|
|
679 &ctx->peer.peers->peer[0].name);
|
|
76
|
680 ngx_close_connection(ctx->peer.connection);
|
|
96
|
681 ngx_destroy_pool(ctx->pool);
|
|
76
|
682 ngx_imap_session_internal_server_error(s);
|
|
|
683
|
|
|
684 return;
|
|
|
685 }
|
|
|
686 }
|
|
|
687
|
|
|
688
|
|
|
689 static void
|
|
|
690 ngx_imap_auth_sleep_handler(ngx_event_t *rev)
|
|
|
691 {
|
|
92
|
692 ngx_connection_t *c;
|
|
|
693 ngx_imap_session_t *s;
|
|
|
694 ngx_imap_core_srv_conf_t *cscf;
|
|
76
|
695
|
|
|
696 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0, "imap auth sleep handler");
|
|
|
697
|
|
|
698 c = rev->data;
|
|
|
699 s = c->data;
|
|
|
700
|
|
|
701 if (rev->timedout) {
|
|
|
702
|
|
|
703 rev->timedout = 0;
|
|
|
704
|
|
|
705 if (s->protocol == NGX_IMAP_POP3_PROTOCOL) {
|
|
|
706 s->imap_state = ngx_pop3_start;
|
|
|
707 s->connection->read->handler = ngx_pop3_auth_state;
|
|
|
708
|
|
|
709 } else {
|
|
|
710 s->imap_state = ngx_imap_start;
|
|
|
711 s->connection->read->handler = ngx_imap_auth_state;
|
|
|
712 }
|
|
|
713
|
|
92
|
714 c->log->action = "in auth state";
|
|
|
715
|
|
|
716 ngx_imap_send(s->connection->write);
|
|
|
717
|
|
|
718 if (c->closed) {
|
|
|
719 return;
|
|
|
720 }
|
|
|
721
|
|
|
722 cscf = ngx_imap_get_module_srv_conf(s, ngx_imap_core_module);
|
|
|
723
|
|
|
724 ngx_add_timer(rev, cscf->timeout);
|
|
|
725
|
|
76
|
726 if (rev->ready) {
|
|
|
727 s->connection->read->handler(rev);
|
|
|
728 return;
|
|
|
729 }
|
|
|
730
|
|
|
731 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
732 ngx_imap_close_connection(s->connection);
|
|
|
733 }
|
|
|
734
|
|
|
735 return;
|
|
|
736 }
|
|
|
737
|
|
|
738 if (rev->active) {
|
|
|
739 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
740 ngx_imap_close_connection(s->connection);
|
|
|
741 }
|
|
|
742 }
|
|
|
743 }
|
|
|
744
|
|
|
745
|
|
|
746 static ngx_int_t
|
|
|
747 ngx_imap_auth_http_parse_header_line(ngx_imap_session_t *s,
|
|
|
748 ngx_imap_auth_http_ctx_t *ctx)
|
|
|
749 {
|
|
|
750 u_char c, ch, *p;
|
|
|
751 ngx_uint_t hash;
|
|
|
752 enum {
|
|
|
753 sw_start = 0,
|
|
|
754 sw_name,
|
|
|
755 sw_space_before_value,
|
|
|
756 sw_value,
|
|
|
757 sw_space_after_value,
|
|
|
758 sw_almost_done,
|
|
|
759 sw_header_almost_done
|
|
|
760 } state;
|
|
|
761
|
|
|
762 state = ctx->state;
|
|
|
763 hash = ctx->hash;
|
|
|
764
|
|
|
765 for (p = ctx->response->pos; p < ctx->response->last; p++) {
|
|
|
766 ch = *p;
|
|
|
767
|
|
|
768 switch (state) {
|
|
|
769
|
|
|
770 /* first char */
|
|
|
771 case sw_start:
|
|
|
772
|
|
|
773 switch (ch) {
|
|
|
774 case CR:
|
|
|
775 ctx->header_end = p;
|
|
|
776 state = sw_header_almost_done;
|
|
|
777 break;
|
|
|
778 case LF:
|
|
|
779 ctx->header_end = p;
|
|
|
780 goto header_done;
|
|
|
781 default:
|
|
|
782 state = sw_name;
|
|
|
783 ctx->header_name_start = p;
|
|
|
784
|
|
|
785 c = (u_char) (ch | 0x20);
|
|
|
786 if (c >= 'a' && c <= 'z') {
|
|
|
787 hash = c;
|
|
|
788 break;
|
|
|
789 }
|
|
|
790
|
|
|
791 if (ch >= '0' && ch <= '9') {
|
|
|
792 hash = ch;
|
|
|
793 break;
|
|
|
794 }
|
|
|
795
|
|
|
796 return NGX_ERROR;
|
|
|
797 }
|
|
|
798 break;
|
|
|
799
|
|
|
800 /* header name */
|
|
|
801 case sw_name:
|
|
|
802 c = (u_char) (ch | 0x20);
|
|
|
803 if (c >= 'a' && c <= 'z') {
|
|
|
804 hash += c;
|
|
|
805 break;
|
|
|
806 }
|
|
|
807
|
|
|
808 if (ch == ':') {
|
|
|
809 ctx->header_name_end = p;
|
|
|
810 state = sw_space_before_value;
|
|
|
811 break;
|
|
|
812 }
|
|
|
813
|
|
|
814 if (ch == '-') {
|
|
|
815 hash += ch;
|
|
|
816 break;
|
|
|
817 }
|
|
|
818
|
|
|
819 if (ch >= '0' && ch <= '9') {
|
|
|
820 hash += ch;
|
|
|
821 break;
|
|
|
822 }
|
|
|
823
|
|
|
824 if (ch == CR) {
|
|
|
825 ctx->header_name_end = p;
|
|
|
826 ctx->header_start = p;
|
|
|
827 ctx->header_end = p;
|
|
|
828 state = sw_almost_done;
|
|
|
829 break;
|
|
|
830 }
|
|
|
831
|
|
|
832 if (ch == LF) {
|
|
|
833 ctx->header_name_end = p;
|
|
|
834 ctx->header_start = p;
|
|
|
835 ctx->header_end = p;
|
|
|
836 goto done;
|
|
|
837 }
|
|
|
838
|
|
|
839 return NGX_ERROR;
|
|
|
840
|
|
|
841 /* space* before header value */
|
|
|
842 case sw_space_before_value:
|
|
|
843 switch (ch) {
|
|
|
844 case ' ':
|
|
|
845 break;
|
|
|
846 case CR:
|
|
|
847 ctx->header_start = p;
|
|
|
848 ctx->header_end = p;
|
|
|
849 state = sw_almost_done;
|
|
|
850 break;
|
|
|
851 case LF:
|
|
|
852 ctx->header_start = p;
|
|
|
853 ctx->header_end = p;
|
|
|
854 goto done;
|
|
|
855 default:
|
|
|
856 ctx->header_start = p;
|
|
|
857 state = sw_value;
|
|
|
858 break;
|
|
|
859 }
|
|
|
860 break;
|
|
|
861
|
|
|
862 /* header value */
|
|
|
863 case sw_value:
|
|
|
864 switch (ch) {
|
|
|
865 case ' ':
|
|
|
866 ctx->header_end = p;
|
|
|
867 state = sw_space_after_value;
|
|
|
868 break;
|
|
|
869 case CR:
|
|
|
870 ctx->header_end = p;
|
|
|
871 state = sw_almost_done;
|
|
|
872 break;
|
|
|
873 case LF:
|
|
|
874 ctx->header_end = p;
|
|
|
875 goto done;
|
|
|
876 }
|
|
|
877 break;
|
|
|
878
|
|
|
879 /* space* before end of header line */
|
|
|
880 case sw_space_after_value:
|
|
|
881 switch (ch) {
|
|
|
882 case ' ':
|
|
|
883 break;
|
|
|
884 case CR:
|
|
|
885 state = sw_almost_done;
|
|
|
886 break;
|
|
|
887 case LF:
|
|
|
888 goto done;
|
|
|
889 default:
|
|
|
890 state = sw_value;
|
|
|
891 break;
|
|
|
892 }
|
|
|
893 break;
|
|
|
894
|
|
|
895 /* end of header line */
|
|
|
896 case sw_almost_done:
|
|
|
897 switch (ch) {
|
|
|
898 case LF:
|
|
|
899 goto done;
|
|
|
900 default:
|
|
|
901 return NGX_ERROR;
|
|
|
902 }
|
|
|
903
|
|
|
904 /* end of header */
|
|
|
905 case sw_header_almost_done:
|
|
|
906 switch (ch) {
|
|
|
907 case LF:
|
|
|
908 goto header_done;
|
|
|
909 default:
|
|
|
910 return NGX_ERROR;
|
|
|
911 }
|
|
|
912 }
|
|
|
913 }
|
|
|
914
|
|
|
915 ctx->response->pos = p;
|
|
|
916 ctx->state = state;
|
|
|
917 ctx->hash = hash;
|
|
|
918
|
|
|
919 return NGX_AGAIN;
|
|
|
920
|
|
|
921 done:
|
|
|
922
|
|
|
923 ctx->response->pos = p + 1;
|
|
|
924 ctx->state = sw_start;
|
|
|
925 ctx->hash = hash;
|
|
|
926
|
|
|
927 return NGX_OK;
|
|
|
928
|
|
|
929 header_done:
|
|
|
930
|
|
|
931 ctx->response->pos = p + 1;
|
|
|
932 ctx->state = sw_start;
|
|
|
933
|
|
|
934 return NGX_DONE;
|
|
|
935 }
|
|
|
936
|
|
|
937
|
|
|
938 static void
|
|
|
939 ngx_imap_auth_http_block_read(ngx_event_t *rev)
|
|
|
940 {
|
|
|
941 ngx_connection_t *c;
|
|
|
942 ngx_imap_session_t *s;
|
|
|
943 ngx_imap_auth_http_ctx_t *ctx;
|
|
|
944
|
|
|
945 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, rev->log, 0,
|
|
|
946 "imap auth http block read");
|
|
|
947
|
|
|
948 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
949 c = rev->data;
|
|
|
950 s = c->data;
|
|
|
951
|
|
|
952 ctx = ngx_imap_get_module_ctx(s, ngx_imap_auth_http_module);
|
|
|
953
|
|
|
954 ngx_close_connection(ctx->peer.connection);
|
|
96
|
955 ngx_destroy_pool(ctx->pool);
|
|
76
|
956 ngx_imap_session_internal_server_error(s);
|
|
|
957 }
|
|
|
958 }
|
|
|
959
|
|
|
960
|
|
|
961 static void
|
|
|
962 ngx_imap_auth_http_dummy_handler(ngx_event_t *ev)
|
|
|
963 {
|
|
|
964 ngx_log_debug0(NGX_LOG_DEBUG_IMAP, ev->log, 0,
|
|
|
965 "imap auth http dummy handler");
|
|
|
966 }
|
|
|
967
|
|
|
968
|
|
|
969 static ngx_buf_t *
|
|
96
|
970 ngx_imap_auth_http_create_request(ngx_imap_session_t *s, ngx_pool_t *pool,
|
|
76
|
971 ngx_imap_auth_http_conf_t *ahcf)
|
|
|
972 {
|
|
|
973 size_t len;
|
|
|
974 ngx_buf_t *b;
|
|
|
975
|
|
|
976 len = sizeof("GET ") - 1 + ahcf->uri.len + sizeof(" HTTP/1.0" CRLF) - 1
|
|
|
977 + sizeof("Host: ") - 1 + ahcf->host_header.len + sizeof(CRLF) - 1
|
|
|
978 + sizeof("Auth-Method: plain" CRLF) - 1
|
|
|
979 + sizeof("Auth-User: ") - 1 + s->login.len + sizeof(CRLF) - 1
|
|
|
980 + sizeof("Auth-Pass: ") - 1 + s->passwd.len + sizeof(CRLF) - 1
|
|
|
981 + sizeof("Auth-Protocol: imap" CRLF) - 1
|
|
|
982 + sizeof("Auth-Login-Attempt: ") - 1 + NGX_INT_T_LEN
|
|
|
983 + sizeof(CRLF) - 1
|
|
|
984 + sizeof("Client-IP: ") - 1 + s->connection->addr_text.len
|
|
|
985 + sizeof(CRLF) - 1
|
|
|
986 + sizeof(CRLF) - 1;
|
|
|
987
|
|
96
|
988 b = ngx_create_temp_buf(pool, len);
|
|
76
|
989 if (b == NULL) {
|
|
|
990 return NULL;
|
|
|
991 }
|
|
|
992
|
|
|
993 b->last = ngx_cpymem(b->last, "GET ", sizeof("GET ") - 1);
|
|
|
994 b->last = ngx_cpymem(b->last, ahcf->uri.data, ahcf->uri.len);
|
|
|
995 b->last = ngx_cpymem(b->last, " HTTP/1.0" CRLF,
|
|
|
996 sizeof(" HTTP/1.0" CRLF) - 1);
|
|
|
997
|
|
|
998 b->last = ngx_cpymem(b->last, "Host: ", sizeof("Host: ") - 1);
|
|
|
999 b->last = ngx_cpymem(b->last, ahcf->host_header.data,
|
|
|
1000 ahcf->host_header.len);
|
|
|
1001 *b->last++ = CR; *b->last++ = LF;
|
|
|
1002
|
|
|
1003 b->last = ngx_cpymem(b->last, "Auth-Method: plain" CRLF,
|
|
|
1004 sizeof("Auth-Method: plain" CRLF) - 1);
|
|
|
1005
|
|
|
1006 b->last = ngx_cpymem(b->last, "Auth-User: ", sizeof("Auth-User: ") - 1);
|
|
|
1007 b->last = ngx_cpymem(b->last, s->login.data, s->login.len);
|
|
|
1008 *b->last++ = CR; *b->last++ = LF;
|
|
|
1009
|
|
|
1010 b->last = ngx_cpymem(b->last, "Auth-Pass: ", sizeof("Auth-Pass: ") - 1);
|
|
|
1011 b->last = ngx_cpymem(b->last, s->passwd.data, s->passwd.len);
|
|
|
1012 *b->last++ = CR; *b->last++ = LF;
|
|
|
1013
|
|
|
1014 b->last = ngx_cpymem(b->last, "Auth-Protocol: ",
|
|
|
1015 sizeof("Auth-Protocol: ") - 1);
|
|
|
1016 b->last = ngx_cpymem(b->last, ngx_imap_auth_http_protocol[s->protocol],
|
|
|
1017 sizeof("imap") - 1);
|
|
|
1018 *b->last++ = CR; *b->last++ = LF;
|
|
|
1019
|
|
|
1020 b->last = ngx_sprintf(b->last, "Auth-Login-Attempt: %ui" CRLF,
|
|
|
1021 s->login_attempt);
|
|
|
1022
|
|
|
1023 b->last = ngx_cpymem(b->last, "Client-IP: ", sizeof("Client-IP: ") - 1);
|
|
|
1024 b->last = ngx_cpymem(b->last, s->connection->addr_text.data,
|
|
|
1025 s->connection->addr_text.len);
|
|
|
1026 *b->last++ = CR; *b->last++ = LF;
|
|
|
1027
|
|
|
1028 /* add "\r\n" at the header end */
|
|
|
1029 *b->last++ = CR; *b->last++ = LF;
|
|
|
1030
|
|
96
|
1031 #if (NGX_DEBUG_IMAP_PASSWD)
|
|
76
|
1032 {
|
|
|
1033 ngx_str_t l;
|
|
|
1034
|
|
|
1035 l.len = b->last - b->pos;
|
|
|
1036 l.data = b->pos;
|
|
|
1037 ngx_log_debug1(NGX_LOG_DEBUG_IMAP, s->connection->log, 0,
|
|
|
1038 "imap auth http header:\n\"%V\"", &l);
|
|
|
1039 }
|
|
|
1040 #endif
|
|
|
1041
|
|
|
1042 return b;
|
|
|
1043 }
|
|
|
1044
|
|
|
1045
|
|
|
1046 static void *
|
|
|
1047 ngx_imap_auth_http_create_conf(ngx_conf_t *cf)
|
|
|
1048 {
|
|
|
1049 ngx_imap_auth_http_conf_t *ahcf;
|
|
|
1050
|
|
|
1051 ahcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_auth_http_conf_t));
|
|
|
1052 if (ahcf == NULL) {
|
|
|
1053 return NGX_CONF_ERROR;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 ahcf->timeout = NGX_CONF_UNSET_MSEC;
|
|
|
1057
|
|
|
1058 return ahcf;
|
|
|
1059 }
|
|
|
1060
|
|
|
1061
|
|
|
1062 static char *
|
|
|
1063 ngx_imap_auth_http_merge_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
1064 {
|
|
|
1065 ngx_imap_auth_http_conf_t *prev = parent;
|
|
|
1066 ngx_imap_auth_http_conf_t *conf = child;
|
|
|
1067
|
|
|
1068 if (conf->peers == NULL) {
|
|
|
1069 conf->peers = prev->peers;
|
|
|
1070 conf->host_header = prev->host_header;
|
|
|
1071 conf->uri = prev->uri;
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000);
|
|
|
1075
|
|
|
1076 return NGX_CONF_OK;
|
|
|
1077 }
|
|
|
1078
|
|
|
1079
|
|
|
1080 static char *
|
|
|
1081 ngx_imap_auth_http(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
1082 {
|
|
|
1083 ngx_imap_auth_http_conf_t *ahcf = conf;
|
|
|
1084
|
|
|
1085 ngx_str_t *value, *url;
|
|
|
1086 ngx_inet_upstream_t inet_upstream;
|
|
|
1087 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
1088 ngx_unix_domain_upstream_t unix_upstream;
|
|
|
1089 #endif
|
|
|
1090
|
|
|
1091 value = cf->args->elts;
|
|
|
1092
|
|
|
1093 url = &value[1];
|
|
|
1094
|
|
|
1095 if (ngx_strncasecmp(url->data, "unix:", 5) == 0) {
|
|
|
1096
|
|
|
1097 #if (NGX_HAVE_UNIX_DOMAIN)
|
|
|
1098
|
|
|
1099 ngx_memzero(&unix_upstream, sizeof(ngx_unix_domain_upstream_t));
|
|
|
1100
|
|
|
1101 unix_upstream.name = *url;
|
|
|
1102 unix_upstream.url = *url;
|
|
|
1103 unix_upstream.uri_part = 1;
|
|
|
1104
|
|
|
1105 ahcf->peers = ngx_unix_upstream_parse(cf, &unix_upstream);
|
|
|
1106 if (ahcf->peers == NULL) {
|
|
|
1107 return NGX_CONF_ERROR;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 ahcf->host_header.len = sizeof("localhost") - 1;
|
|
|
1111 ahcf->host_header.data = (u_char *) "localhost";
|
|
|
1112 ahcf->uri = unix_upstream.uri;
|
|
|
1113
|
|
|
1114 #else
|
|
|
1115 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
1116 "the unix domain sockets are not supported "
|
|
|
1117 "on this platform");
|
|
|
1118 return NGX_CONF_ERROR;
|
|
|
1119
|
|
|
1120 #endif
|
|
|
1121
|
|
|
1122 } else {
|
|
|
1123 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t));
|
|
|
1124
|
|
|
1125 inet_upstream.name = *url;
|
|
|
1126 inet_upstream.url = *url;
|
|
|
1127 inet_upstream.default_port_value = 80;
|
|
|
1128 inet_upstream.uri_part = 1;
|
|
|
1129
|
|
|
1130 ahcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream);
|
|
|
1131 if (ahcf->peers == NULL) {
|
|
|
1132 return NGX_CONF_ERROR;
|
|
|
1133 }
|
|
|
1134
|
|
|
1135 ahcf->host_header = inet_upstream.host_header;
|
|
|
1136 ahcf->uri = inet_upstream.uri;
|
|
|
1137 }
|
|
|
1138
|
|
108
|
1139 if (ahcf->uri.len == 0) {
|
|
104
|
1140 ahcf->uri.len = sizeof("/") - 1;
|
|
|
1141 ahcf->uri.data = (u_char *) "/";
|
|
|
1142 }
|
|
|
1143
|
|
76
|
1144 return NGX_CONF_OK;
|
|
|
1145 }
|
