Mercurial > hg > nginx
annotate src/mail/ngx_mail_smtp_handler.c @ 1892:057d362ee50e
resolver in smtp proxy module
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 13 Feb 2008 13:50:04 +0000 |
parents | 7806f453183e |
children | 4c060e30476b |
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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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_handler(ngx_resolver_ctx_t *ctx); |
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16 static void ngx_mail_smtp_greeting(ngx_mail_session_t *s, ngx_connection_t *c); |
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17 static void ngx_mail_smtp_invalid_pipelining(ngx_event_t *rev); |
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18 static ngx_int_t ngx_mail_smtp_create_buffer(ngx_mail_session_t *s, |
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19 ngx_connection_t *c); |
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20 |
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21 static ngx_int_t ngx_mail_smtp_helo(ngx_mail_session_t *s, ngx_connection_t *c); |
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22 static ngx_int_t ngx_mail_smtp_auth(ngx_mail_session_t *s, ngx_connection_t *c); |
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23 static ngx_int_t ngx_mail_smtp_mail(ngx_mail_session_t *s, ngx_connection_t *c); |
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24 static ngx_int_t ngx_mail_smtp_starttls(ngx_mail_session_t *s, |
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25 ngx_connection_t *c); |
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26 |
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27 static ngx_int_t ngx_mail_smtp_discard_command(ngx_mail_session_t *s, |
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28 ngx_connection_t *c, char *err); |
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29 static void ngx_mail_smtp_log_rejected_command(ngx_mail_session_t *s, |
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30 ngx_connection_t *c, char *err); |
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31 |
527 | 32 |
1136 | 33 static u_char smtp_ok[] = "250 2.0.0 OK" CRLF; |
34 static u_char smtp_bye[] = "221 2.0.0 Bye" CRLF; | |
1762 | 35 static u_char smtp_starttls[] = "220 2.0.0 Start TLS" CRLF; |
1136 | 36 static u_char smtp_next[] = "334 " CRLF; |
37 static u_char smtp_username[] = "334 VXNlcm5hbWU6" CRLF; | |
38 static u_char smtp_password[] = "334 UGFzc3dvcmQ6" CRLF; | |
39 static u_char smtp_invalid_command[] = "500 5.5.1 Invalid command" CRLF; | |
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40 static u_char smtp_invalid_pipelining[] = |
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41 "503 5.5.0 Improper use of SMTP command pipelining" CRLF; |
1136 | 42 static u_char smtp_invalid_argument[] = "501 5.5.4 Invalid argument" CRLF; |
43 static u_char smtp_auth_required[] = "530 5.7.1 Authentication required" CRLF; | |
44 | |
521 | 45 |
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46 static ngx_str_t smtp_unavailable = ngx_string("[UNAVAILABLE]"); |
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47 static ngx_str_t smtp_tempunavail = ngx_string("[TEMPUNAVAIL]"); |
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48 |
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49 |
521 | 50 void |
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51 ngx_mail_smtp_init_session(ngx_mail_session_t *s, ngx_connection_t *c) |
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52 { |
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53 struct sockaddr_in *sin; |
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54 ngx_resolver_ctx_t *ctx; |
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55 ngx_mail_core_srv_conf_t *cscf; |
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56 |
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57 c->log->action = "in resolving client address"; |
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58 |
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59 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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60 |
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61 ctx = ngx_resolve_start(cscf->resolver, NULL); |
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62 if (ctx == NULL) { |
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63 ngx_mail_close_connection(c); |
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64 return; |
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65 } |
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66 |
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67 /* AF_INET only */ |
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68 |
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69 sin = (struct sockaddr_in *) c->sockaddr; |
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70 |
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71 ctx->addr = sin->sin_addr.s_addr; |
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72 ctx->handler = ngx_mail_smtp_resolve_addr_handler; |
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73 ctx->data = s; |
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74 ctx->timeout = cscf->resolver_timeout; |
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75 |
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76 if (ngx_resolve_addr(ctx) != NGX_OK) { |
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77 ngx_mail_close_connection(c); |
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78 } |
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79 } |
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80 |
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81 |
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82 static void |
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83 ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx) |
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84 { |
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85 ngx_connection_t *c; |
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86 ngx_mail_session_t *s; |
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87 ngx_mail_core_srv_conf_t *cscf; |
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88 |
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89 s = ctx->data; |
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90 c = s->connection; |
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91 |
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92 if (ctx->state) { |
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93 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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94 "%V could not be resolved (%i: %s)", |
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95 &c->addr_text, ctx->state, |
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96 ngx_resolver_strerror(ctx->state)); |
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97 |
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98 if (ctx->state == NGX_RESOLVE_NXDOMAIN) { |
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99 s->host = smtp_unavailable; |
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100 |
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101 } else { |
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102 s->host = smtp_tempunavail; |
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103 } |
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104 |
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105 ngx_resolve_addr_done(ctx); |
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106 |
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107 ngx_mail_smtp_greeting(s, s->connection); |
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108 |
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109 return; |
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110 } |
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111 |
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112 c->log->action = "in resolving client hostname"; |
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113 |
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114 s->host.data = ngx_pstrdup(c->pool, &ctx->name); |
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115 if (s->host.data == NULL) { |
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116 ngx_resolve_addr_done(ctx); |
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117 ngx_mail_close_connection(c); |
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118 return; |
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119 } |
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120 |
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121 s->host.len = ctx->name.len; |
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122 |
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123 ngx_resolve_addr_done(ctx); |
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124 |
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125 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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126 "address resolved: %V", &s->host); |
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127 |
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128 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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129 |
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130 ctx = ngx_resolve_start(cscf->resolver, NULL); |
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131 if (ctx == NULL) { |
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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 ctx->name = s->host; |
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137 ctx->type = NGX_RESOLVE_A; |
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138 ctx->handler = ngx_mail_smtp_resolve_name_handler; |
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139 ctx->data = s; |
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140 ctx->timeout = cscf->resolver_timeout; |
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141 |
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142 if (ngx_resolve_name(ctx) != NGX_OK) { |
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143 ngx_mail_close_connection(c); |
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144 } |
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145 } |
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146 |
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147 |
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148 static void |
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149 ngx_mail_smtp_resolve_name_handler(ngx_resolver_ctx_t *ctx) |
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150 { |
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151 in_addr_t addr; |
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152 ngx_uint_t i; |
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153 ngx_connection_t *c; |
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154 struct sockaddr_in *sin; |
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155 ngx_mail_session_t *s; |
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156 |
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157 s = ctx->data; |
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158 c = s->connection; |
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159 |
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160 if (ctx->state) { |
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161 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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162 "%V could not be resolved (%i: %s)", |
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163 &ctx->name, ctx->state, |
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164 ngx_resolver_strerror(ctx->state)); |
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165 |
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166 if (ctx->state == NGX_RESOLVE_NXDOMAIN) { |
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167 s->host = smtp_unavailable; |
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168 |
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169 } else { |
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170 s->host = smtp_tempunavail; |
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171 } |
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172 |
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173 } else { |
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174 |
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175 /* AF_INET only */ |
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176 |
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177 sin = (struct sockaddr_in *) c->sockaddr; |
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178 |
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179 for (i = 0; i < ctx->naddrs; i++) { |
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180 |
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181 addr = ctx->addrs[i]; |
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182 |
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183 ngx_log_debug4(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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184 "name was resolved to %ud.%ud.%ud.%ud", |
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185 (ntohl(addr) >> 24) & 0xff, |
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186 (ntohl(addr) >> 16) & 0xff, |
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187 (ntohl(addr) >> 8) & 0xff, |
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188 ntohl(addr) & 0xff); |
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189 |
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190 if (addr == sin->sin_addr.s_addr) { |
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191 goto found; |
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192 } |
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193 } |
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194 |
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195 s->host = smtp_unavailable; |
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196 } |
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197 |
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198 found: |
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199 |
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200 ngx_resolve_name_done(ctx); |
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201 |
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202 ngx_mail_smtp_greeting(s, c); |
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203 } |
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204 |
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205 |
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206 static void |
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207 ngx_mail_smtp_greeting(ngx_mail_session_t *s, ngx_connection_t *c) |
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208 { |
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209 ngx_msec_t timeout; |
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210 ngx_mail_core_srv_conf_t *cscf; |
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211 ngx_mail_smtp_srv_conf_t *sscf; |
641 | 212 |
1892
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213 ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, |
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214 "smtp greeting for \"%V\"", &s->host); |
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215 |
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216 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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217 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
541 | 218 |
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219 timeout = sscf->greeting_delay ? sscf->greeting_delay : cscf->timeout; |
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220 ngx_add_timer(c->read, timeout); |
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221 |
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222 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { |
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223 ngx_mail_close_connection(c); |
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224 } |
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225 |
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226 if (sscf->greeting_delay) { |
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227 c->read->handler = ngx_mail_smtp_invalid_pipelining; |
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228 return; |
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229 } |
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230 |
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231 c->read->handler = ngx_mail_smtp_init_protocol; |
583 | 232 |
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233 s->out = sscf->greeting; |
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234 |
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235 ngx_mail_send(c->write); |
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236 } |
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237 |
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238 |
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239 static void |
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240 ngx_mail_smtp_invalid_pipelining(ngx_event_t *rev) |
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241 { |
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242 ngx_connection_t *c; |
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243 ngx_mail_session_t *s; |
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244 ngx_mail_core_srv_conf_t *cscf; |
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245 ngx_mail_smtp_srv_conf_t *sscf; |
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246 |
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247 c = rev->data; |
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248 s = c->data; |
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249 |
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250 c->log->action = "in delay pipelining state"; |
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251 |
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252 if (rev->timedout) { |
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253 |
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254 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "delay greeting"); |
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255 |
1484 | 256 rev->timedout = 0; |
257 | |
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258 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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259 |
1481
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260 c->read->handler = ngx_mail_smtp_init_protocol; |
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261 |
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262 ngx_add_timer(c->read, cscf->timeout); |
1481
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263 |
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264 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { |
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265 ngx_mail_close_connection(c); |
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266 return; |
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267 } |
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268 |
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269 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
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270 |
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271 s->out = sscf->greeting; |
1481
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272 |
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273 } else { |
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274 |
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275 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "invalid pipelining"); |
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276 |
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277 if (s->buffer == NULL) { |
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278 if (ngx_mail_smtp_create_buffer(s, c) != NGX_OK) { |
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279 return; |
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280 } |
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281 } |
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282 |
1481
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283 if (ngx_mail_smtp_discard_command(s, c, |
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284 "client was rejected before greeting: \"%V\"") |
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285 != NGX_OK) |
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286 { |
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287 return; |
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288 } |
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289 |
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290 s->out.len = sizeof(smtp_invalid_pipelining) - 1; |
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291 s->out.data = smtp_invalid_pipelining; |
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292 } |
539 | 293 |
1136 | 294 ngx_mail_send(c->write); |
539 | 295 } |
296 | |
297 | |
298 void | |
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299 ngx_mail_smtp_init_protocol(ngx_event_t *rev) |
539 | 300 { |
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301 ngx_connection_t *c; |
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302 ngx_mail_session_t *s; |
417
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303 |
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304 c = rev->data; |
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305 |
541 | 306 c->log->action = "in auth state"; |
307 | |
423
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308 if (rev->timedout) { |
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309 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
577 | 310 c->timedout = 1; |
1136 | 311 ngx_mail_close_connection(c); |
423
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312 return; |
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313 } |
420
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314 |
539 | 315 s = c->data; |
521 | 316 |
1483
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317 if (s->buffer == NULL) { |
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318 if (ngx_mail_smtp_create_buffer(s, c) != NGX_OK) { |
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319 return; |
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320 } |
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321 } |
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322 |
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323 s->mail_state = ngx_smtp_start; |
1477 | 324 c->read->handler = ngx_mail_smtp_auth_state; |
1136 | 325 |
1477 | 326 ngx_mail_smtp_auth_state(rev); |
521 | 327 } |
328 | |
329 | |
1483
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330 static ngx_int_t |
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331 ngx_mail_smtp_create_buffer(ngx_mail_session_t *s, ngx_connection_t *c) |
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332 { |
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333 ngx_mail_smtp_srv_conf_t *sscf; |
1483
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334 |
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335 if (ngx_array_init(&s->args, c->pool, 2, sizeof(ngx_str_t)) == NGX_ERROR) { |
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336 ngx_mail_session_internal_server_error(s); |
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337 return NGX_ERROR; |
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338 } |
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339 |
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340 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
1483
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341 |
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342 s->buffer = ngx_create_temp_buf(c->pool, sscf->client_buffer_size); |
1483
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343 if (s->buffer == NULL) { |
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344 ngx_mail_session_internal_server_error(s); |
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345 return NGX_ERROR; |
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346 } |
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347 |
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348 return NGX_OK; |
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349 } |
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350 |
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351 |
527 | 352 void |
1477 | 353 ngx_mail_smtp_auth_state(ngx_event_t *rev) |
420
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354 { |
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355 ngx_int_t rc; |
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356 ngx_connection_t *c; |
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357 ngx_mail_session_t *s; |
420
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358 |
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359 c = rev->data; |
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360 s = c->data; |
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361 |
1136 | 362 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "smtp auth state"); |
421
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420
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|
363 |
423
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422
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|
364 if (rev->timedout) { |
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422
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|
365 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out"); |
577 | 366 c->timedout = 1; |
1136 | 367 ngx_mail_close_connection(c); |
423
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368 return; |
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369 } |
420
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419
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370 |
539 | 371 if (s->out.len) { |
1136 | 372 ngx_log_debug0(NGX_LOG_DEBUG_MAIL, c->log, 0, "smtp send handler busy"); |
539 | 373 s->blocked = 1; |
374 return; | |
375 } | |
376 | |
377 s->blocked = 0; | |
378 | |
1482 | 379 rc = ngx_mail_read_command(s, c); |
420
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380 |
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381 if (rc == NGX_AGAIN || rc == NGX_ERROR) { |
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382 return; |
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383 } |
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384 |
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385 s->out.len = sizeof(smtp_ok) - 1; |
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386 s->out.data = smtp_ok; |
421
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parents:
420
diff
changeset
|
387 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
388 if (rc == NGX_OK) { |
1136 | 389 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
|
390 |
1136 | 391 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
|
392 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
393 switch (s->command) { |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
394 |
1136 | 395 case NGX_SMTP_HELO: |
396 case NGX_SMTP_EHLO: | |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
397 rc = ngx_mail_smtp_helo(s, c); |
809 | 398 break; |
399 | |
1136 | 400 case NGX_SMTP_AUTH: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
401 rc = ngx_mail_smtp_auth(s, c); |
800 | 402 break; |
403 | |
1136 | 404 case NGX_SMTP_QUIT: |
539 | 405 s->quit = 1; |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
406 s->out.len = sizeof(smtp_bye) - 1; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
407 s->out.data = smtp_bye; |
527 | 408 break; |
409 | |
1136 | 410 case NGX_SMTP_MAIL: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
411 rc = ngx_mail_smtp_mail(s, c); |
583 | 412 break; |
413 | |
1136 | 414 case NGX_SMTP_NOOP: |
415 case NGX_SMTP_RSET: | |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
416 break; |
1322 | 417 |
418 case NGX_SMTP_STARTTLS: | |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
419 rc = ngx_mail_smtp_starttls(s, c); |
1762 | 420 s->out.len = sizeof(smtp_starttls) - 1; |
421 s->out.data = smtp_starttls; | |
1322 | 422 break; |
423 | |
424 default: | |
425 rc = NGX_MAIL_PARSE_INVALID_COMMAND; | |
426 break; | |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
427 } |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
428 |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
429 break; |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
430 |
1136 | 431 case ngx_smtp_auth_login_username: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
432 rc = ngx_mail_auth_login_username(s, c); |
809 | 433 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
434 s->out.len = sizeof(smtp_password) - 1; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
435 s->out.data = smtp_password; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
436 s->mail_state = ngx_smtp_auth_login_password; |
809 | 437 break; |
438 | |
1136 | 439 case ngx_smtp_auth_login_password: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
440 rc = ngx_mail_auth_login_password(s, c); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
441 break; |
809 | 442 |
1136 | 443 case ngx_smtp_auth_plain: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
444 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
|
445 break; |
809 | 446 |
1136 | 447 case ngx_smtp_auth_cram_md5: |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
448 rc = ngx_mail_auth_cram_md5(s, c); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
449 break; |
421
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
450 } |
01456a419cf9
nginx-0.0.10-2004-09-10-18:32:02 import
Igor Sysoev <igor@sysoev.ru>
parents:
420
diff
changeset
|
451 } |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
452 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
453 switch (rc) { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
454 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
455 case NGX_DONE: |
1482 | 456 ngx_mail_auth(s, c); |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
457 return; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
458 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
459 case NGX_ERROR: |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
460 ngx_mail_session_internal_server_error(s); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
461 return; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
462 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
463 case NGX_MAIL_PARSE_INVALID_COMMAND: |
1136 | 464 s->mail_state = ngx_smtp_start; |
1486
0e7074ef7303
style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents:
1485
diff
changeset
|
465 s->state = 0; |
420
33a8253115b4
nginx-0.0.10-2004-09-09-22:55:39 import
Igor Sysoev <igor@sysoev.ru>
parents:
419
diff
changeset
|
466 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
467 s->out.len = sizeof(smtp_invalid_command) - 1; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
468 s->out.data = smtp_invalid_command; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
469 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
470 /* fall through */ |
539 | 471 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
472 case NGX_OK: |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
473 s->args.nelts = 0; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
474 s->buffer->pos = s->buffer->start; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
475 s->buffer->last = s->buffer->start; |
810 | 476 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
477 if (s->state) { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
478 s->arg_start = s->buffer->start; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
479 } |
539 | 480 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
481 ngx_mail_send(c->write); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
482 } |
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
483 } |
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
484 |
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
415
diff
changeset
|
485 |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
486 static ngx_int_t |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
487 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
|
488 { |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
489 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
|
490 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
|
491 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
492 if (s->args.nelts != 1) { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
493 s->out.len = sizeof(smtp_invalid_argument) - 1; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
494 s->out.data = smtp_invalid_argument; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
495 s->state = 0; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
496 return NGX_OK; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
497 } |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
498 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
499 arg = s->args.elts; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
500 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
501 s->smtp_helo.len = arg[0].len; |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
502 |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
503 s->smtp_helo.data = ngx_palloc(c->pool, arg[0].len); |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
504 if (s->smtp_helo.data == NULL) { |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
505 return NGX_ERROR; |
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
506 } |
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
507 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
508 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
|
509 |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
510 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
511 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
512 if (s->command == NGX_SMTP_HELO) { |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
513 s->out = sscf->server_name; |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
514 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
515 } else { |
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
516 s->esmtp = 1; |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
517 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
518 #if (NGX_MAIL_SSL) |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
519 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
520 if (c->ssl == NULL) { |
1704
e584e946e198
move condition declarations inside blocks where they are used
Igor Sysoev <igor@sysoev.ru>
parents:
1493
diff
changeset
|
521 ngx_mail_ssl_conf_t *sslcf; |
e584e946e198
move condition declarations inside blocks where they are used
Igor Sysoev <igor@sysoev.ru>
parents:
1493
diff
changeset
|
522 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
523 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
524 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
525 if (sslcf->starttls == NGX_MAIL_STARTTLS_ON) { |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
526 s->out = sscf->starttls_capability; |
1476
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 } |
894
4f7dca9c37f0
workaround for Eudora for Mac: it sends
Igor Sysoev <igor@sysoev.ru>
parents:
884
diff
changeset
|
529 |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
530 if (sslcf->starttls == NGX_MAIL_STARTTLS_ONLY) { |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1486
diff
changeset
|
531 s->out = sscf->starttls_only_capability; |
1476
67578e966dcc
split pop3, imap, and smtp handlers
Igor Sysoev <igor@sysoev.ru>
parents:
1472
diff
changeset
|
532 return NGX_OK; |
67578e966dcc
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533 } |
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534 } |
894
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535 #endif |
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|
536 |
1487
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|
537 s->out = sscf->capability; |
420
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|
538 } |
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539 |
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540 return NGX_OK; |
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diff
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|
541 } |
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542 |
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543 |
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544 static ngx_int_t |
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545 ngx_mail_smtp_auth(ngx_mail_session_t *s, ngx_connection_t *c) |
525 | 546 { |
1479 | 547 ngx_int_t rc; |
1476
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548 ngx_mail_core_srv_conf_t *cscf; |
1487
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|
549 ngx_mail_smtp_srv_conf_t *sscf; |
525 | 550 |
1479 | 551 #if (NGX_MAIL_SSL) |
552 if (ngx_mail_starttls_only(s, c)) { | |
553 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
539 | 554 } |
555 #endif | |
556 | |
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557 if (s->args.nelts == 0) { |
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558 s->out.len = sizeof(smtp_invalid_argument) - 1; |
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559 s->out.data = smtp_invalid_argument; |
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560 s->state = 0; |
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561 return NGX_OK; |
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562 } |
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563 |
1479 | 564 rc = ngx_mail_auth_parse(s, c); |
1476
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565 |
1479 | 566 switch (rc) { |
1476
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567 |
1479 | 568 case NGX_MAIL_AUTH_LOGIN: |
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|
569 |
1479 | 570 s->out.len = sizeof(smtp_username) - 1; |
571 s->out.data = smtp_username; | |
572 s->mail_state = ngx_smtp_auth_login_username; | |
1476
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573 |
1479 | 574 return NGX_OK; |
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575 |
1479 | 576 case NGX_MAIL_AUTH_PLAIN: |
1476
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577 |
1479 | 578 s->out.len = sizeof(smtp_next) - 1; |
579 s->out.data = smtp_next; | |
580 s->mail_state = ngx_smtp_auth_plain; | |
543 | 581 |
1479 | 582 return NGX_OK; |
583 | |
584 case NGX_MAIL_AUTH_CRAM_MD5: | |
1476
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585 |
1487
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586 sscf = ngx_mail_get_module_srv_conf(s, ngx_mail_smtp_module); |
1476
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587 |
1487
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588 if (!(sscf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED)) { |
1476
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589 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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590 } |
479 | 591 |
1485
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592 if (s->salt.data == NULL) { |
1487
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593 cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); |
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594 |
1485
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|
595 if (ngx_mail_salt(s, c, cscf) != NGX_OK) { |
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596 return NGX_ERROR; |
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597 } |
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|
598 } |
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599 |
1479 | 600 if (ngx_mail_auth_cram_md5_salt(s, c, "334 ", 4) == NGX_OK) { |
601 s->mail_state = ngx_smtp_auth_cram_md5; | |
602 return NGX_OK; | |
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603 } |
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604 |
1479 | 605 return NGX_ERROR; |
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606 } |
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607 |
1479 | 608 return rc; |
417
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609 } |
539 | 610 |
611 | |
1476
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612 static ngx_int_t |
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613 ngx_mail_smtp_mail(ngx_mail_session_t *s, ngx_connection_t *c) |
541 | 614 { |
1481
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615 ngx_mail_smtp_log_rejected_command(s, c, "client was rejected: \"%V\""); |
577 | 616 |
1476
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617 s->out.len = sizeof(smtp_auth_required) - 1; |
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618 s->out.data = smtp_auth_required; |
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619 |
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620 return NGX_OK; |
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|
621 } |
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622 |
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623 |
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624 static ngx_int_t |
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625 ngx_mail_smtp_starttls(ngx_mail_session_t *s, ngx_connection_t *c) |
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626 { |
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627 #if (NGX_MAIL_SSL) |
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|
628 ngx_mail_ssl_conf_t *sslcf; |
541 | 629 |
1476
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|
630 if (c->ssl == NULL) { |
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631 sslcf = ngx_mail_get_module_srv_conf(s, ngx_mail_ssl_module); |
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|
632 if (sslcf->starttls) { |
541 | 633 |
1476
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|
634 /* |
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635 * RFC3207 requires us to discard any knowledge |
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636 * obtained from client before STARTTLS. |
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637 */ |
541 | 638 |
1476
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|
639 s->smtp_helo.len = 0; |
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|
640 s->smtp_helo.data = NULL; |
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|
641 |
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642 c->read->handler = ngx_mail_starttls_handler; |
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643 return NGX_OK; |
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644 } |
541 | 645 } |
646 | |
1476
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647 #endif |
541 | 648 |
1476
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|
649 return NGX_MAIL_PARSE_INVALID_COMMAND; |
541 | 650 } |
1481
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651 |
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652 |
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653 static ngx_int_t |
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|
654 ngx_mail_smtp_discard_command(ngx_mail_session_t *s, ngx_connection_t *c, |
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|
655 char *err) |
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656 { |
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|
657 ssize_t n; |
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|
658 |
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|
659 n = c->recv(c, s->buffer->last, s->buffer->end - s->buffer->last); |
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660 |
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|
661 if (n == NGX_ERROR || n == 0) { |
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|
662 ngx_mail_close_connection(c); |
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663 return NGX_ERROR; |
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664 } |
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665 |
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|
666 if (n > 0) { |
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|
667 s->buffer->last += n; |
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|
668 } |
1486
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diff
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|
669 |
1481
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670 if (n == NGX_AGAIN) { |
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671 if (ngx_handle_read_event(c->read, 0) == NGX_ERROR) { |
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|
672 ngx_mail_session_internal_server_error(s); |
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|
673 return NGX_ERROR; |
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|
674 } |
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|
675 |
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|
676 return NGX_AGAIN; |
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|
677 } |
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|
678 |
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679 ngx_mail_smtp_log_rejected_command(s, c, err); |
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680 |
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681 s->buffer->pos = s->buffer->start; |
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682 s->buffer->last = s->buffer->start; |
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683 |
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684 return NGX_OK; |
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685 } |
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686 |
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687 |
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688 static void |
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689 ngx_mail_smtp_log_rejected_command(ngx_mail_session_t *s, ngx_connection_t *c, |
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690 char *err) |
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691 { |
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692 u_char ch; |
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693 ngx_str_t cmd; |
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694 ngx_uint_t i; |
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695 |
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696 if (c->log->log_level < NGX_LOG_INFO) { |
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697 return; |
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698 } |
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699 |
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700 cmd.len = s->buffer->last - s->buffer->start; |
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701 cmd.data = s->buffer->start; |
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702 |
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703 for (i = 0; i < cmd.len; i++) { |
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704 ch = cmd.data[i]; |
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705 |
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706 if (ch != CR && ch != LF) { |
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707 continue; |
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708 } |
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709 |
1493
3c4111e07b58
use "_" instead of " " as new line substitute, do not delete trailing new line
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710 cmd.data[i] = '_'; |
1481
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711 } |
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712 |
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713 cmd.len = i; |
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714 |
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715 ngx_log_error(NGX_LOG_INFO, c->log, 0, err, &cmd); |
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716 } |