Mercurial > hg > nginx
annotate src/mail/ngx_mail_smtp_handler.c @ 3808:71281dd73b17 release-0.9.1
nginx-0.9.1-RELEASE
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 30 Nov 2010 13:10:32 +0000 |
parents | dd1570b6f237 |
children | d620f497c50f |
rev | line source |
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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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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> |
1136 | 10 #include <ngx_mail.h> |
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11 #include <ngx_mail_smtp_module.h> |
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12 |
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13 |
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14 static void ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx); |
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15 static void ngx_mail_smtp_resolve_name(ngx_event_t *rev); |
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16 static void ngx_mail_smtp_resolve_name_handler(ngx_resolver_ctx_t *ctx); |
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17 static void ngx_mail_smtp_greeting(ngx_mail_session_t *s, ngx_connection_t *c); |
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18 static void ngx_mail_smtp_invalid_pipelining(ngx_event_t *rev); |
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19 static ngx_int_t ngx_mail_smtp_create_buffer(ngx_mail_session_t *s, |
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20 ngx_connection_t *c); |
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21 |
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22 static ngx_int_t ngx_mail_smtp_helo(ngx_mail_session_t *s, ngx_connection_t *c); |
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23 static ngx_int_t ngx_mail_smtp_auth(ngx_mail_session_t *s, ngx_connection_t *c); |
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24 static ngx_int_t ngx_mail_smtp_mail(ngx_mail_session_t *s, ngx_connection_t *c); |
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25 static ngx_int_t ngx_mail_smtp_starttls(ngx_mail_session_t *s, |
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26 ngx_connection_t *c); |
2309 | 27 static ngx_int_t ngx_mail_smtp_rset(ngx_mail_session_t *s, ngx_connection_t *c); |
28 static ngx_int_t ngx_mail_smtp_rcpt(ngx_mail_session_t *s, ngx_connection_t *c); | |
413
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29 |
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30 static ngx_int_t ngx_mail_smtp_discard_command(ngx_mail_session_t *s, |
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31 ngx_connection_t *c, char *err); |
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32 static void ngx_mail_smtp_log_rejected_command(ngx_mail_session_t *s, |
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33 ngx_connection_t *c, char *err); |
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34 |
527 | 35 |
1136 | 36 static u_char smtp_ok[] = "250 2.0.0 OK" CRLF; |
37 static u_char smtp_bye[] = "221 2.0.0 Bye" CRLF; | |
1762 | 38 static u_char smtp_starttls[] = "220 2.0.0 Start TLS" CRLF; |
1136 | 39 static u_char smtp_next[] = "334 " CRLF; |
40 static u_char smtp_username[] = "334 VXNlcm5hbWU6" CRLF; | |
41 static u_char smtp_password[] = "334 UGFzc3dvcmQ6" CRLF; | |
42 static u_char smtp_invalid_command[] = "500 5.5.1 Invalid command" CRLF; | |
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43 static u_char smtp_invalid_pipelining[] = |
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44 "503 5.5.0 Improper use of SMTP command pipelining" CRLF; |
1136 | 45 static u_char smtp_invalid_argument[] = "501 5.5.4 Invalid argument" CRLF; |
46 static u_char smtp_auth_required[] = "530 5.7.1 Authentication required" CRLF; | |
2309 | 47 static u_char smtp_bad_sequence[] = "503 5.5.1 Bad sequence of commands" CRLF; |
1136 | 48 |
521 | 49 |
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50 static ngx_str_t smtp_unavailable = ngx_string("[UNAVAILABLE]"); |
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51 static ngx_str_t smtp_tempunavail = ngx_string("[TEMPUNAVAIL]"); |
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52 |
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53 |
521 | 54 void |
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55 ngx_mail_smtp_init_session(ngx_mail_session_t *s, ngx_connection_t *c) |
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56 { |
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57 struct sockaddr_in *sin; |
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58 ngx_resolver_ctx_t *ctx; |
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59 ngx_mail_core_srv_conf_t *cscf; |
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60 |
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61 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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62 |
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63 if (cscf->resolver == NULL) { |
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64 s->host = smtp_unavailable; |
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65 ngx_mail_smtp_greeting(s, c); |
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66 return; |
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67 } |
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68 |
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69 if (c->sockaddr->sa_family != AF_INET) { |
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70 s->host = smtp_tempunavail; |
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71 ngx_mail_smtp_greeting(s, c); |
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72 return; |
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73 } |
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74 |
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75 c->log->action = "in resolving client address"; |
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76 |
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77 ctx = ngx_resolve_start(cscf->resolver, NULL); |
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78 if (ctx == NULL) { |
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79 ngx_mail_close_connection(c); |
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80 return; |
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81 } |
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82 |
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83 /* AF_INET only */ |
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84 |
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85 sin = (struct sockaddr_in *) c->sockaddr; |
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86 |
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87 ctx->addr = sin->sin_addr.s_addr; |
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88 ctx->handler = ngx_mail_smtp_resolve_addr_handler; |
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89 ctx->data = s; |
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90 ctx->timeout = cscf->resolver_timeout; |
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91 |
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92 if (ngx_resolve_addr(ctx) != NGX_OK) { |
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93 ngx_mail_close_connection(c); |
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94 } |
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95 } |
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96 |
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97 |
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98 static void |
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99 ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx) |
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100 { |
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101 ngx_connection_t *c; |
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102 ngx_mail_session_t *s; |
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103 |
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104 s = ctx->data; |
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105 c = s->connection; |
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106 |
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107 if (ctx->state) { |
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108 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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109 "%V could not be resolved (%i: %s)", |
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110 &c->addr_text, ctx->state, |
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111 ngx_resolver_strerror(ctx->state)); |
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112 |
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113 if (ctx->state == NGX_RESOLVE_NXDOMAIN) { |
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114 s->host = smtp_unavailable; |
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115 |
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116 } else { |
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117 s->host = smtp_tempunavail; |
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118 } |
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119 |
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120 ngx_resolve_addr_done(ctx); |
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121 |
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122 ngx_mail_smtp_greeting(s, s->connection); |
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123 |
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124 return; |
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125 } |
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126 |
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127 c->log->action = "in resolving client hostname"; |
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128 |
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129 s->host.data = ngx_pstrdup(c->pool, &ctx->name); |
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130 if (s->host.data == NULL) { |
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131 ngx_resolve_addr_done(ctx); |
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132 ngx_mail_close_connection(c); |
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133 return; |
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134 } |
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135 |
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136 s->host.len = ctx->name.len; |
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137 |
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138 ngx_resolve_addr_done(ctx); |
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139 |
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140 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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141 "address resolved: %V", &s->host); |
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142 |
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143 c->read->handler = ngx_mail_smtp_resolve_name; |
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144 |
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145 ngx_post_event(c->read, &ngx_posted_events); |
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146 } |
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147 |
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148 |
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149 static void |
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150 ngx_mail_smtp_resolve_name(ngx_event_t *rev) |
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151 { |
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152 ngx_connection_t *c; |
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153 ngx_mail_session_t *s; |
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154 ngx_resolver_ctx_t *ctx; |
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155 ngx_mail_core_srv_conf_t *cscf; |
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156 |
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157 c = rev->data; |
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158 s = c->data; |
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159 |
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160 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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161 |
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162 ctx = ngx_resolve_start(cscf->resolver, NULL); |
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163 if (ctx == NULL) { |
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164 ngx_mail_close_connection(c); |
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165 return; |
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166 } |
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167 |
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168 ctx->name = s->host; |
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169 ctx->type = NGX_RESOLVE_A; |
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170 ctx->handler = ngx_mail_smtp_resolve_name_handler; |
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171 ctx->data = s; |
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172 ctx->timeout = cscf->resolver_timeout; |
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173 |
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174 if (ngx_resolve_name(ctx) != NGX_OK) { |
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175 ngx_mail_close_connection(c); |
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176 } |
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177 } |
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178 |
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179 |
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180 static void |
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181 ngx_mail_smtp_resolve_name_handler(ngx_resolver_ctx_t *ctx) |
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182 { |
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183 in_addr_t addr; |
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184 ngx_uint_t i; |
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185 ngx_connection_t *c; |
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186 struct sockaddr_in *sin; |
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187 ngx_mail_session_t *s; |
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188 |
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189 s = ctx->data; |
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190 c = s->connection; |
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191 |
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192 if (ctx->state) { |
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193 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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194 "\"%V\" could not be resolved (%i: %s)", |
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195 &ctx->name, ctx->state, |
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196 ngx_resolver_strerror(ctx->state)); |
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197 |
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198 if (ctx->state == NGX_RESOLVE_NXDOMAIN) { |
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199 s->host = smtp_unavailable; |
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200 |
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201 } else { |
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202 s->host = smtp_tempunavail; |
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203 } |
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204 |
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205 } else { |
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206 |
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207 /* AF_INET only */ |
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208 |
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209 sin = (struct sockaddr_in *) c->sockaddr; |
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210 |
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211 for (i = 0; i < ctx->naddrs; i++) { |
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212 |
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213 addr = ctx->addrs[i]; |
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214 |
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215 ngx_log_debug4(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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216 "name was resolved to %ud.%ud.%ud.%ud", |
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217 (ntohl(addr) >> 24) & 0xff, |
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218 (ntohl(addr) >> 16) & 0xff, |
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219 (ntohl(addr) >> 8) & 0xff, |
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220 ntohl(addr) & 0xff); |
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221 |
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222 if (addr == sin->sin_addr.s_addr) { |
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223 goto found; |
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224 } |
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225 } |
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226 |
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227 s->host = smtp_unavailable; |
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228 } |
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229 |
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230 found: |
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231 |
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232 ngx_resolve_name_done(ctx); |
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233 |
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234 ngx_mail_smtp_greeting(s, c); |
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235 } |
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236 |
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237 |
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238 static void |
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239 ngx_mail_smtp_greeting(ngx_mail_session_t *s, ngx_connection_t *c) |
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240 { |
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241 ngx_msec_t timeout; |
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242 ngx_mail_core_srv_conf_t *cscf; |
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243 ngx_mail_smtp_srv_conf_t *sscf; |
641 | 244 |
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245 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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246 "smtp greeting for \"%V\"", &s->host); |
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247 |
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248 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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249 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
541 | 250 |
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251 timeout = sscf->greeting_delay ? sscf->greeting_delay : cscf->timeout; |
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252 ngx_add_timer(c->read, timeout); |
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253 |
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254 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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255 ngx_mail_close_connection(c); |
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256 } |
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257 |
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258 if (sscf->greeting_delay) { |
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259 c->read->handler = ngx_mail_smtp_invalid_pipelining; |
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260 return; |
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261 } |
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262 |
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263 c->read->handler = ngx_mail_smtp_init_protocol; |
583 | 264 |
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265 s->out = sscf->greeting; |
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266 |
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267 ngx_mail_send(c->write); |
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268 } |
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269 |
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270 |
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271 static void |
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272 ngx_mail_smtp_invalid_pipelining(ngx_event_t *rev) |
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273 { |
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274 ngx_connection_t *c; |
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275 ngx_mail_session_t *s; |
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276 ngx_mail_core_srv_conf_t *cscf; |
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277 ngx_mail_smtp_srv_conf_t *sscf; |
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278 |
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279 c = rev->data; |
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280 s = c->data; |
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281 |
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282 c->log->action = "in delay pipelining state"; |
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283 |
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284 if (rev->timedout) { |
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285 |
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286 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "delay greeting"); |
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287 |
1484 | 288 rev->timedout = 0; |
289 | |
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290 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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291 |
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292 c->read->handler = ngx_mail_smtp_init_protocol; |
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293 |
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294 ngx_add_timer(c->read, cscf->timeout); |
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295 |
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296 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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297 ngx_mail_close_connection(c); |
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298 return; |
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299 } |
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300 |
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301 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
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302 |
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303 s->out = sscf->greeting; |
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304 |
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305 } else { |
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306 |
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307 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "invalid pipelining"); |
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308 |
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309 if (s->buffer == NULL) { |
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310 if (ngx_mail_smtp_create_buffer(s, c) != NGX_OK) { |
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311 return; |
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312 } |
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313 } |
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314 |
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315 if (ngx_mail_smtp_discard_command(s, c, |
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316 "client was rejected before greeting: \"%V\"") |
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317 != NGX_OK) |
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318 { |
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319 return; |
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320 } |
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321 |
3516
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322 ngx_str_set(&s->out, smtp_invalid_pipelining); |
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323 } |
539 | 324 |
1136 | 325 ngx_mail_send(c->write); |
539 | 326 } |
327 | |
328 | |
329 void | |
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330 ngx_mail_smtp_init_protocol(ngx_event_t *rev) |
539 | 331 { |
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332 ngx_connection_t *c; |
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333 ngx_mail_session_t *s; |
417
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334 |
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335 c = rev->data; |
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336 |
541 | 337 c->log->action = "in auth state"; |
338 | |
423
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339 if (rev->timedout) { |
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340 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
577 | 341 c->timedout = 1; |
1136 | 342 ngx_mail_close_connection(c); |
423
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343 return; |
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344 } |
420
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345 |
539 | 346 s = c->data; |
521 | 347 |
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348 if (s->buffer == NULL) { |
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349 if (ngx_mail_smtp_create_buffer(s, c) != NGX_OK) { |
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350 return; |
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351 } |
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352 } |
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353 |
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354 s->mail_state = ngx_smtp_start; |
1477 | 355 c->read->handler = ngx_mail_smtp_auth_state; |
1136 | 356 |
1477 | 357 ngx_mail_smtp_auth_state(rev); |
521 | 358 } |
359 | |
360 | |
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361 static ngx_int_t |
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362 ngx_mail_smtp_create_buffer(ngx_mail_session_t *s, ngx_connection_t *c) |
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363 { |
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364 ngx_mail_smtp_srv_conf_t *sscf; |
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365 |
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366 if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t)) == NGX_ERROR) { |
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367 ngx_mail_session_internal_server_error(s); |
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368 return NGX_ERROR; |
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369 } |
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370 |
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371 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
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372 |
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373 s->buffer = ngx_create_temp_buf(c->pool, sscf->client_buffer_size); |
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374 if (s->buffer == NULL) { |
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375 ngx_mail_session_internal_server_error(s); |
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376 return NGX_ERROR; |
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377 } |
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378 |
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379 return NGX_OK; |
46f364406994
ngx_mail_smtp_create_buffer()
Igor Sysoev <igor@sysoev.ru>
parents:
1482
diff
changeset
|
380 } |
46f364406994
ngx_mail_smtp_create_buffer()
Igor Sysoev <igor@sysoev.ru>
parents:
1482
diff
changeset
|
381 |
46f364406994
ngx_mail_smtp_create_buffer()
Igor Sysoev <igor@sysoev.ru>
parents:
1482
diff
changeset
|
382 |
527 | 383 void |
1477 | 384 ngx_mail_smtp_auth_state(ngx_event_t *rev) |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
385 { |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
386 ngx_int_t rc; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
387 ngx_connection_t *c; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
388 ngx_mail_session_t *s; |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
389 |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
390 c = rev->data; |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
391 s = c->data; |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
392 |
1136 | 393 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "smtp auth state"); |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
394 |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
395 if (rev->timedout) { |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
396 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
577 | 397 c->timedout = 1; |
1136 | 398 ngx_mail_close_connection(c); |
423
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
399 return; |
fda5987b188d
nginx-0.0.10-2004-09-13-20:18:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
422
diff
changeset
|
400 } |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
401 |
539 | 402 if (s->out.len) { |
1136 | 403 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "smtp send handler busy"); |
539 | 404 s->blocked = 1; |
405 return; | |
406 } | |
407 | |
408 s->blocked = 0; | |
409 | |
1482 | 410 rc = ngx_mail_read_command(s, c); |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
411 |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
412 if (rc == NGX_AGAIN || rc == NGX_ERROR) { |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
413 return; |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
414 } |
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
415 |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
416 ngx_str_set(&s->out, smtp_ok); |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
417 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
418 if (rc == NGX_OK) { |
1136 | 419 switch (s->mail_state) { |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
420 |
1136 | 421 case ngx_smtp_start: |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
422 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
423 switch (s->command) { |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
424 |
1136 | 425 case NGX_SMTP_HELO: |
426 case NGX_SMTP_EHLO: | |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
427 rc = ngx_mail_smtp_helo(s, c); |
809 | 428 break; |
429 | |
1136 | 430 case NGX_SMTP_AUTH: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
431 rc = ngx_mail_smtp_auth(s, c); |
800 | 432 break; |
433 | |
1136 | 434 case NGX_SMTP_QUIT: |
539 | 435 s->quit = 1; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
436 ngx_str_set(&s->out, smtp_bye); |
527 | 437 break; |
438 | |
1136 | 439 case NGX_SMTP_MAIL: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
440 rc = ngx_mail_smtp_mail(s, c); |
583 | 441 break; |
442 | |
2309 | 443 case NGX_SMTP_RCPT: |
444 rc = ngx_mail_smtp_rcpt(s, c); | |
445 break; | |
446 | |
447 case NGX_SMTP_RSET: | |
448 rc = ngx_mail_smtp_rset(s, c); | |
449 break; | |
450 | |
1136 | 451 case NGX_SMTP_NOOP: |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
452 break; |
1322 | 453 |
454 case NGX_SMTP_STARTTLS: | |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
455 rc = ngx_mail_smtp_starttls(s, c); |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
456 ngx_str_set(&s->out, smtp_starttls); |
1322 | 457 break; |
458 | |
459 default: | |
460 rc = NGX_MAIL_PARSE_INVALID_COMMAND; | |
461 break; | |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
462 } |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
463 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
464 break; |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
465 |
1136 | 466 case ngx_smtp_auth_login_username: |
2495
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2488
diff
changeset
|
467 rc = ngx_mail_auth_login_username(s, c, 0); |
809 | 468 |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
469 ngx_str_set(&s->out, smtp_password); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
470 s->mail_state = ngx_smtp_auth_login_password; |
809 | 471 break; |
472 | |
1136 | 473 case ngx_smtp_auth_login_password: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
474 rc = ngx_mail_auth_login_password(s, c); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
475 break; |
809 | 476 |
1136 | 477 case ngx_smtp_auth_plain: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
478 rc = ngx_mail_auth_plain(s, c, 0); |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
479 break; |
809 | 480 |
1136 | 481 case ngx_smtp_auth_cram_md5: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
482 rc = ngx_mail_auth_cram_md5(s, c); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
483 break; |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
484 } |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
485 } |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
486 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
487 switch (rc) { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
488 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
489 case NGX_DONE: |
1482 | 490 ngx_mail_auth(s, c); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
491 return; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
492 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
493 case NGX_ERROR: |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
494 ngx_mail_session_internal_server_error(s); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
495 return; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
496 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
497 case NGX_MAIL_PARSE_INVALID_COMMAND: |
1136 | 498 s->mail_state = ngx_smtp_start; |
1486
0e7074ef7303
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1485
diff
changeset
|
499 s->state = 0; |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
500 ngx_str_set(&s->out, smtp_invalid_command); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
501 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
502 /* fall through */ |
539 | 503 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
504 case NGX_OK: |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
505 s->args.nelts = 0; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
506 s->buffer->pos = s->buffer->start; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
507 s->buffer->last = s->buffer->start; |
810 | 508 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
509 if (s->state) { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
510 s->arg_start = s->buffer->start; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
511 } |
539 | 512 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
513 ngx_mail_send(c->write); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
514 } |
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
515 } |
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
516 |
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
517 |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
518 static ngx_int_t |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
519 ngx_mail_smtp_helo(ngx_mail_session_t *s, ngx_connection_t *c) |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
520 { |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
521 ngx_str_t *arg; |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
522 ngx_mail_smtp_srv_conf_t *sscf; |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
523 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
524 if (s->args.nelts != 1) { |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
525 ngx_str_set(&s->out, smtp_invalid_argument); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
526 s->state = 0; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
527 return NGX_OK; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
528 } |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
529 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
530 arg = s->args.elts; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
531 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
532 s->smtp_helo.len = arg[0].len; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
533 |
2049 | 534 s->smtp_helo.data = ngx_pnalloc(c->pool, arg[0].len); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
535 if (s->smtp_helo.data == NULL) { |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
536 return NGX_ERROR; |
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
537 } |
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
538 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
539 ngx_memcpy(s->smtp_helo.data, arg[0].data, arg[0].len); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
540 |
3516
dd1570b6f237
ngx_str_set() and ngx_str_null()
Igor Sysoev <igor@sysoev.ru>
parents:
3299
diff
changeset
|
541 ngx_str_null(&s->smtp_from); |
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542 ngx_str_null(&s->smtp_to); |
2309 | 543 |
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544 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
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545 |
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546 if (s->command == NGX_SMTP_HELO) { |
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547 s->out = sscf->server_name; |
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548 |
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549 } else { |
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550 s->esmtp = 1; |
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551 |
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552 #if (NGX_MAIL_SSL) |
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553 |
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554 if (c->ssl == NULL) { |
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555 ngx_mail_ssl_conf_t *sslcf; |
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556 |
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557 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
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558 |
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559 if (sslcf->starttls == NGX_MAIL_STARTTLS_ON) { |
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560 s->out = sscf->starttls_capability; |
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561 return NGX_OK; |
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562 } |
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563 |
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564 if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) { |
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565 s->out = sscf->starttls_only_capability; |
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566 return NGX_OK; |
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567 } |
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568 } |
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569 #endif |
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570 |
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571 s->out = sscf->capability; |
420
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572 } |
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573 |
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574 return NGX_OK; |
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575 } |
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576 |
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577 |
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578 static ngx_int_t |
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579 ngx_mail_smtp_auth(ngx_mail_session_t *s, ngx_connection_t *c) |
525 | 580 { |
1479 | 581 ngx_int_t rc; |
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582 ngx_mail_core_srv_conf_t *cscf; |
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583 ngx_mail_smtp_srv_conf_t *sscf; |
525 | 584 |
1479 | 585 #if (NGX_MAIL_SSL) |
586 if (ngx_mail_starttls_only(s, c)) { | |
587 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
539 | 588 } |
589 #endif | |
590 | |
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591 if (s->args.nelts == 0) { |
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592 ngx_str_set(&s->out, smtp_invalid_argument); |
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593 s->state = 0; |
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594 return NGX_OK; |
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595 } |
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596 |
1479 | 597 rc = ngx_mail_auth_parse(s, c); |
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598 |
1479 | 599 switch (rc) { |
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600 |
1479 | 601 case NGX_MAIL_AUTH_LOGIN: |
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602 |
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603 ngx_str_set(&s->out, smtp_username); |
1479 | 604 s->mail_state = ngx_smtp_auth_login_username; |
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605 |
1479 | 606 return NGX_OK; |
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607 |
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608 case NGX_MAIL_AUTH_LOGIN_USERNAME: |
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609 |
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610 ngx_str_set(&s->out, smtp_password); |
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611 s->mail_state = ngx_smtp_auth_login_password; |
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612 |
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613 return ngx_mail_auth_login_username(s, c, 1); |
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614 |
1479 | 615 case NGX_MAIL_AUTH_PLAIN: |
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616 |
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617 ngx_str_set(&s->out, smtp_next); |
1479 | 618 s->mail_state = ngx_smtp_auth_plain; |
543 | 619 |
1479 | 620 return NGX_OK; |
621 | |
622 case NGX_MAIL_AUTH_CRAM_MD5: | |
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623 |
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624 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
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625 |
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626 if (!(sscf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) { |
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627 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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628 } |
479 | 629 |
1485
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630 if (s->salt.data == NULL) { |
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631 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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632 |
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633 if (ngx_mail_salt(s, c, cscf) != NGX_OK) { |
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634 return NGX_ERROR; |
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635 } |
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636 } |
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637 |
1479 | 638 if (ngx_mail_auth_cram_md5_salt(s, c, "334 ", 4) == NGX_OK) { |
639 s->mail_state = ngx_smtp_auth_cram_md5; | |
640 return NGX_OK; | |
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641 } |
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642 |
1479 | 643 return NGX_ERROR; |
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644 } |
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645 |
1479 | 646 return rc; |
417
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647 } |
539 | 648 |
649 | |
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650 static ngx_int_t |
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651 ngx_mail_smtp_mail(ngx_mail_session_t *s, ngx_connection_t *c) |
541 | 652 { |
2309 | 653 u_char ch; |
654 ngx_str_t l; | |
655 ngx_uint_t i; | |
656 ngx_mail_smtp_srv_conf_t *sscf; | |
657 | |
658 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); | |
659 | |
660 if (!(sscf->auth_methods & NGX_MAIL_AUTH_NONE_ENABLED)) { | |
661 ngx_mail_smtp_log_rejected_command(s, c, "client was rejected: \"%V\""); | |
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662 ngx_str_set(&s->out, smtp_auth_required); |
2309 | 663 return NGX_OK; |
664 } | |
665 | |
666 /* auth none */ | |
667 | |
668 if (s->smtp_from.len) { | |
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669 ngx_str_set(&s->out, smtp_bad_sequence); |
2309 | 670 return NGX_OK; |
671 } | |
672 | |
673 l.len = s->buffer->last - s->buffer->start; | |
674 l.data = s->buffer->start; | |
675 | |
676 for (i = 0; i < l.len; i++) { | |
677 ch = l.data[i]; | |
678 | |
679 if (ch != CR && ch != LF) { | |
680 continue; | |
681 } | |
682 | |
683 l.data[i] = ' '; | |
684 } | |
685 | |
686 while (i) { | |
687 if (l.data[i - 1] != ' ') { | |
688 break; | |
689 } | |
690 | |
691 i--; | |
692 } | |
693 | |
694 l.len = i; | |
695 | |
696 s->smtp_from.len = l.len; | |
697 | |
698 s->smtp_from.data = ngx_pnalloc(c->pool, l.len); | |
699 if (s->smtp_from.data == NULL) { | |
700 return NGX_ERROR; | |
701 } | |
702 | |
703 ngx_memcpy(s->smtp_from.data, l.data, l.len); | |
704 | |
705 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, | |
706 "smtp mail from:\"%V\"", &s->smtp_from); | |
707 | |
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708 ngx_str_set(&s->out, smtp_ok); |
2309 | 709 |
710 return NGX_OK; | |
711 } | |
577 | 712 |
2309 | 713 |
714 static ngx_int_t | |
715 ngx_mail_smtp_rcpt(ngx_mail_session_t *s, ngx_connection_t *c) | |
716 { | |
717 u_char ch; | |
718 ngx_str_t l; | |
719 ngx_uint_t i; | |
720 | |
721 if (s->smtp_from.len == 0) { | |
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722 ngx_str_set(&s->out, smtp_bad_sequence); |
2309 | 723 return NGX_OK; |
724 } | |
725 | |
726 l.len = s->buffer->last - s->buffer->start; | |
727 l.data = s->buffer->start; | |
728 | |
729 for (i = 0; i < l.len; i++) { | |
730 ch = l.data[i]; | |
731 | |
732 if (ch != CR && ch != LF) { | |
733 continue; | |
734 } | |
735 | |
736 l.data[i] = ' '; | |
737 } | |
738 | |
739 while (i) { | |
740 if (l.data[i - 1] != ' ') { | |
741 break; | |
742 } | |
743 | |
744 i--; | |
745 } | |
746 | |
747 l.len = i; | |
748 | |
749 s->smtp_to.len = l.len; | |
750 | |
751 s->smtp_to.data = ngx_pnalloc(c->pool, l.len); | |
752 if (s->smtp_to.data == NULL) { | |
753 return NGX_ERROR; | |
754 } | |
755 | |
756 ngx_memcpy(s->smtp_to.data, l.data, l.len); | |
757 | |
758 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, | |
759 "smtp rcpt to:\"%V\"", &s->smtp_to); | |
760 | |
761 s->auth_method = NGX_MAIL_AUTH_NONE; | |
762 | |
763 return NGX_DONE; | |
764 } | |
765 | |
766 | |
767 static ngx_int_t | |
768 ngx_mail_smtp_rset(ngx_mail_session_t *s, ngx_connection_t *c) | |
769 { | |
3516
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770 ngx_str_null(&s->smtp_from); |
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771 ngx_str_null(&s->smtp_to); |
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772 ngx_str_set(&s->out, smtp_ok); |
1476
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773 |
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774 return NGX_OK; |
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775 } |
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776 |
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777 |
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778 static ngx_int_t |
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779 ngx_mail_smtp_starttls(ngx_mail_session_t *s, ngx_connection_t *c) |
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780 { |
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781 #if (NGX_MAIL_SSL) |
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782 ngx_mail_ssl_conf_t *sslcf; |
541 | 783 |
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784 if (c->ssl == NULL) { |
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785 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
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786 if (sslcf->starttls) { |
541 | 787 |
1476
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788 /* |
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789 * RFC3207 requires us to discard any knowledge |
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790 * obtained from client before STARTTLS. |
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791 */ |
541 | 792 |
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793 ngx_str_null(&s->smtp_helo); |
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794 ngx_str_null(&s->smtp_from); |
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795 ngx_str_null(&s->smtp_to); |
1476
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796 |
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797 c->read->handler = ngx_mail_starttls_handler; |
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798 return NGX_OK; |
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799 } |
541 | 800 } |
801 | |
1476
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802 #endif |
541 | 803 |
1476
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804 return NGX_MAIL_PARSE_INVALID_COMMAND; |
541 | 805 } |
1481
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806 |
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807 |
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808 static ngx_int_t |
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809 ngx_mail_smtp_discard_command(ngx_mail_session_t *s, ngx_connection_t *c, |
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810 char *err) |
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811 { |
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812 ssize_t n; |
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813 |
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814 n = c->recv(c, s->buffer->last, s->buffer->end - s->buffer->last); |
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815 |
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816 if (n == NGX_ERROR || n == 0) { |
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817 ngx_mail_close_connection(c); |
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818 return NGX_ERROR; |
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819 } |
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820 |
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821 if (n > 0) { |
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822 s->buffer->last += n; |
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823 } |
1486
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1485
diff
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|
824 |
1481
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825 if (n == NGX_AGAIN) { |
2388
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826 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
1481
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827 ngx_mail_session_internal_server_error(s); |
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828 return NGX_ERROR; |
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829 } |
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830 |
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831 return NGX_AGAIN; |
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832 } |
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833 |
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834 ngx_mail_smtp_log_rejected_command(s, c, err); |
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835 |
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836 s->buffer->pos = s->buffer->start; |
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837 s->buffer->last = s->buffer->start; |
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838 |
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839 return NGX_OK; |
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840 } |
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841 |
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842 |
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843 static void |
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844 ngx_mail_smtp_log_rejected_command(ngx_mail_session_t *s, ngx_connection_t *c, |
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845 char *err) |
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846 { |
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847 u_char ch; |
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848 ngx_str_t cmd; |
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849 ngx_uint_t i; |
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850 |
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851 if (c->log->log_level < NGX_LOG_INFO) { |
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852 return; |
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|
853 } |
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854 |
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855 cmd.len = s->buffer->last - s->buffer->start; |
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856 cmd.data = s->buffer->start; |
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857 |
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858 for (i = 0; i < cmd.len; i++) { |
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859 ch = cmd.data[i]; |
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860 |
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861 if (ch != CR && ch != LF) { |
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862 continue; |
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|
863 } |
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|
864 |
1493
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use "_" instead of " " as new line substitute, do not delete trailing new line
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parents:
1487
diff
changeset
|
865 cmd.data[i] = '_'; |
1481
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|
866 } |
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|
867 |
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868 cmd.len = i; |
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869 |
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|
870 ngx_log_error(NGX_LOG_INFO, c->log, 0, err, &cmd); |
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|
871 } |