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