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