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